ibmvfc.c revision 402c6eec1bd04581c04de758e4efddc020b78f91
1072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/* 2072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc.c -- driver for IBM Power Virtual Fibre Channel Adapter 3072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 5072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 6072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Copyright (C) IBM Corporation, 2008 7072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is free software; you can redistribute it and/or modify 9072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * it under the terms of the GNU General Public License as published by 10072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the Free Software Foundation; either version 2 of the License, or 11072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * (at your option) any later version. 12072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 13072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is distributed in the hope that it will be useful, 14072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * but WITHOUT ANY WARRANTY; without even the implied warranty of 15072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * GNU General Public License for more details. 17072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 18072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * You should have received a copy of the GNU General Public License 19072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * along with this program; if not, write to the Free Software 20072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 22072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 23072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 24072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/module.h> 25072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/moduleparam.h> 26072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dma-mapping.h> 27072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dmapool.h> 28072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/delay.h> 29072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/interrupt.h> 30072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/kthread.h> 315a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 32072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/of.h> 33b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King#include <linux/pm.h> 34072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/stringify.h> 35072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/firmware.h> 36072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/irq.h> 37072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/vio.h> 38072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi.h> 39072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_cmnd.h> 40072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_host.h> 41072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_device.h> 42072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_tcq.h> 43072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_transport_fc.h> 44d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King#include <scsi/scsi_bsg_fc.h> 45072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include "ibmvfc.h" 46072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 47072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int init_timeout = IBMVFC_INIT_TIMEOUT; 48072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int default_timeout = IBMVFC_DEFAULT_TIMEOUT; 49072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_lun = IBMVFC_MAX_LUN; 50072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_targets = IBMVFC_MAX_TARGETS; 51072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT; 52072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS; 53072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int ibmvfc_debug = IBMVFC_DEBUG; 54072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL; 55072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic LIST_HEAD(ibmvfc_head); 56072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic DEFINE_SPINLOCK(ibmvfc_driver_lock); 57072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_transport_template *ibmvfc_transport_template; 58072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 59072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DESCRIPTION("IBM Virtual Fibre Channel Driver"); 60072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>"); 61072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_LICENSE("GPL"); 62072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_VERSION(IBMVFC_DRIVER_VERSION); 63072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 64072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(init_timeout, init_timeout, uint, S_IRUGO | S_IWUSR); 65072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds. " 66072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_INIT_TIMEOUT) "]"); 67072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(default_timeout, default_timeout, uint, S_IRUGO | S_IWUSR); 68072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(default_timeout, 69072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Default timeout in seconds for initialization and EH commands. " 70072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_TIMEOUT) "]"); 71072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_requests, max_requests, uint, S_IRUGO); 72072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_requests, "Maximum requests for this adapter. " 73072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_REQUESTS_DEFAULT) "]"); 74072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_lun, max_lun, uint, S_IRUGO); 75072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_lun, "Maximum allowed LUN. " 76072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_LUN) "]"); 77072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_targets, max_targets, uint, S_IRUGO); 78072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_targets, "Maximum allowed targets. " 79072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_TARGETS) "]"); 80545ef9a2dc1e5ac0463f3754e239ffcc5aaa92e2Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO); 81072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. " 82072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]"); 83072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR); 84072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(debug, "Enable driver debug information. " 85072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEBUG) "]"); 86072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(log_level, log_level, uint, 0); 87072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. " 88072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]"); 89072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 90072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 91072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 92072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 error; 93072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 result; 94072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 retry; 95072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int log; 96072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 97072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} cmd_status [] = { 98072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" }, 99072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" }, 100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" }, 101752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 1, 1, "network down" }, 102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" }, 103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" }, 104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" }, 105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_REGISTER, DID_ERROR, 1, 1, "unable to register" }, 106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_BUSY, DID_BUS_BUSY, 1, 0, "transport busy" }, 107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" }, 108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" }, 109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" }, 110497f9c504f76e7a751cd370604e1c8521743746dBrian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" }, 111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" }, 112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" }, 114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" }, 115752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" }, 116752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" }, 117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 118752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" }, 119752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" }, 120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 121646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 14379111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 2764a2837d4fcaf8a2c2ad61523287073d0c14b9ed0Brian King ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 430d5da3040d798df4bbb62579b97f8b6b83749da22Brian King if (action == IBMVFC_TGT_ACTION_DELETED_RPORT) 431d5da3040d798df4bbb62579b97f8b6b83749da22Brian King tgt->action = action; 432d5da3040d798df4bbb62579b97f8b6b83749da22Brian King case IBMVFC_TGT_ACTION_DELETED_RPORT: 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 43543c8da907ccc656935d1085701f4db83385d8a59Brian King if (action == IBMVFC_TGT_ACTION_DEL_RPORT) 43643c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 48179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 48279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->action == IBMVFC_HOST_ACTION_LOGO) 48379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action = action; 48479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 49343c8da907ccc656935d1085701f4db83385d8a59Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 50673ee5d8672871bd69077ca71e7208a36bfa6343cBrian King switch (vhost->action) { 50773ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_RESET: 50873ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_REENABLE: 50973ee5d8672871bd69077ca71e7208a36bfa6343cBrian King break; 51073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King default: 51173ee5d8672871bd69077ca71e7208a36bfa6343cBrian King vhost->action = action; 51273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King break; 51373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King }; 51473ee5d8672871bd69077ca71e7208a36bfa6343cBrian King break; 51573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_LOGO: 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 51710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 51973ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_RESET: 52073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_REENABLE: 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5372d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5382d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5392d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5402d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 576861890c62d46bd29c73d75fc907aeffd1c4eee06Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost) 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5811c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 590861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 591861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King vhost->async_crq.cur = 0; 592cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 5945e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 65273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King long rc = 0; 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 658039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 66073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King if (rc) 66173ee5d8672871bd69077ca71e7208a36bfa6343cBrian King msleep(100); 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 66679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 68073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King int rc = 0; 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 68573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King if (rc) 68673ee5d8672871bd69077ca71e7208a36bfa6343cBrian King msleep(100); 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 70573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King int rc = 0; 70673ee5d8672871bd69077ca71e7208a36bfa6343cBrian King unsigned long flags; 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 71273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King if (rc) 71373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King msleep(100); 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 71773ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 71979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 73573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 790ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 791ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 792ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 83679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 83979111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost) 840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 84273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 84373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_RESET); 844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 84779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 85079111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 85179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 85279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT && 85379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 85479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King scsi_block_requests(vhost->host); 85579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO); 85679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step = ibmvfc_npiv_logout; 85779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King wake_up(&vhost->work_wait_q); 85879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } else 85979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 86079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 86179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 86279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 86379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_reset_host - Reset the connection to the server 86479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 86579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8797d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if init will be retried / 0 if not 8807d0e462247241b8ec2d377306203b58c7f423553Brian King * 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 8827d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 8847d0e462247241b8ec2d377306203b58c7f423553Brian King int retry = 0; 8857d0e462247241b8ec2d377306203b58c7f423553Brian King 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 8871c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 1; 8881c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 8921c41fa8288277e76785acb50f52bb2f39509f903Brian King } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES) 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 8947d0e462247241b8ec2d377306203b58c7f423553Brian King else { 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 8967d0e462247241b8ec2d377306203b58c7f423553Brian King retry = 1; 8977d0e462247241b8ec2d377306203b58c7f423553Brian King } 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 9017d0e462247241b8ec2d377306203b58c7f423553Brian King return retry; 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 905b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 911b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 918b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 919b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 921b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 926b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 932b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 939b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 978775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "Unknown port speed: %lld Gbit\n", 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 1005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 1008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 10160ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 10170ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 10180ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 1021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 1036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 1038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 1039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 1041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1044b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1045b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1046b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1047b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1048b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1049b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1050b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1051b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1052b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1053b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1054b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1063b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1065b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1066b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1078b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1080b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1081b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1093b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1095b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1096b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 11093eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 11103eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 11113eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 11123eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 116961c7a080a5a061c976988fd4b844dfb468dda255Grant Likely struct device_node *of_node = vhost->dev->of_node; 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1181497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags = IBMVFC_FLUSH_ON_HALT; 1182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1183497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags |= IBMVFC_CLIENT_MIGRATED; 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 118852d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 119171610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME); 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 119471610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers location = location ? location : dev_name(vhost->dev); 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1297ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 136864b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scsi_dma_unmap(scmd); 136964b840dd88eb2054f86c72ed6d989cb8681f0058Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 137064b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1429a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King mb(); 1430a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14840ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 14976d29cc56bead73b6f386cf43333708579deb5eedBrian King * ibmvfc_relogin - Log back into the specified device 14986d29cc56bead73b6f386cf43333708579deb5eedBrian King * @sdev: scsi device struct 14996d29cc56bead73b6f386cf43333708579deb5eedBrian King * 15006d29cc56bead73b6f386cf43333708579deb5eedBrian King **/ 15016d29cc56bead73b6f386cf43333708579deb5eedBrian Kingstatic void ibmvfc_relogin(struct scsi_device *sdev) 15026d29cc56bead73b6f386cf43333708579deb5eedBrian King{ 15036d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 15046d29cc56bead73b6f386cf43333708579deb5eedBrian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 15056d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 15066d29cc56bead73b6f386cf43333708579deb5eedBrian King 15076d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 15086d29cc56bead73b6f386cf43333708579deb5eedBrian King if (rport == tgt->rport) { 15096d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 15106d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 15116d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15126d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15136d29cc56bead73b6f386cf43333708579deb5eedBrian King 15146d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 15156d29cc56bead73b6f386cf43333708579deb5eedBrian King} 15166d29cc56bead73b6f386cf43333708579deb5eedBrian King 15176d29cc56bead73b6f386cf43333708579deb5eedBrian King/** 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 15282bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 15292bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 15462bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1548646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 15496d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_relogin(cmnd->device); 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 155150119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 155250119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 155350119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1565ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1566ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1567ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1609f281233d3eba15fb225d21ae2e228fd4553d824aJeff Garzikstatic int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd, 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1675f281233d3eba15fb225d21ae2e228fd4553d824aJeff Garzikstatic DEF_SCSI_QCMD(ibmvfc_queuecommand) 1676f281233d3eba15fb225d21ae2e228fd4553d824aJeff Garzik 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1692d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout_done - Completion handler for cancelling BSG commands 1693d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @evt: struct ibmvfc_event 1694d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1695d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1696d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic void ibmvfc_bsg_timeout_done(struct ibmvfc_event *evt) 1697d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1698d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = evt->vhost; 1699d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1700d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1701d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1702d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Passthru command cancelled\n"); 1703d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1704d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1705d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1706d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout - Handle a BSG timeout 1707d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job that timed out 1708d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1709d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1710d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1711d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1712d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_timeout(struct fc_bsg_job *job) 1713d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1714d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1715d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long port_id = (unsigned long)job->dd_data; 1716d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1717d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_tmf *tmf; 1718d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1719d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc; 1720d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1721d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1722d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1723d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (vhost->aborting_passthru || vhost->state != IBMVFC_ACTIVE) { 1724d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King __ibmvfc_reset_host(vhost); 1725d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1726d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return 0; 1727d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1728d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1729d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 1; 1730d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1731d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_bsg_timeout_done, IBMVFC_MAD_FORMAT); 1732d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1733d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf = &evt->iu.tmf; 1734d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(tmf, 0, sizeof(*tmf)); 1735d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.version = 1; 1736d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1737d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.length = sizeof(*tmf); 1738d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->scsi_id = port_id; 1739d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1740d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->my_cancel_key = IBMVFC_INTERNAL_CANCEL_KEY; 1741d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1742d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1743d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc != 0) { 1744d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1745d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_err(vhost->dev, "Failed to send cancel event. rc=%d\n", rc); 1746d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1747d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } else 1748d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Cancelling passthru command to port id 0x%lx\n", 1749d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id); 1750d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1751d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1752d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1753d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1754d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1755d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1756d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1757d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1758d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_plogi - PLOGI into a target to handle a BSG command 1759d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @vhost: struct ibmvfc_host to send command 1760d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @port_id: port ID to send command 1761d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1762d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1763d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1764d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1765d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id) 1766d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1767d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_port_login *plogi; 1768d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_target *tgt; 1769d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1770d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1771d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1772d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, issue_login = 1; 1773d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1774d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1775d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1776d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 1777d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (tgt->scsi_id == port_id) { 1778d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 0; 1779d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1780d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1781d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1782d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1783d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!issue_login) 1784d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1785d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely((rc = ibmvfc_host_chkready(vhost)))) 1786d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1787d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1788d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1789d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1790d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi = &evt->iu.plogi; 1791d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(plogi, 0, sizeof(*plogi)); 1792d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.version = 1; 1793d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 1794d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.length = sizeof(*plogi); 1795d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->scsi_id = port_id; 1796d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1797d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1798d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1799d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1800d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1801d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1802d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) 1803d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EIO; 1804d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1805d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1806d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1807d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.plogi.common.status) 1808d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1809d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1810d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1811d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1812d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingunlock_out: 1813d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1814d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1815d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1816d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1817d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1818d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1819d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_request - Handle a BSG request 1820d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job to be executed 1821d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1822d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1823d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1824d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1825d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_request(struct fc_bsg_job *job) 1826d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1827d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1828d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct fc_rport *rport = job->rport; 1829d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_passthru_mad *mad; 1830d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1831d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1832d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags, port_id = -1; 1833d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned int code = job->request->msgcode; 1834d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, req_seg, rsp_seg, issue_login = 0; 1835d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King u32 fc_flags, rsp_len; 1836d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1837d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1838d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = 0; 1839d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport) 1840d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = rport->port_id; 1841d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1842d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King switch (code) { 1843d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_ELS_NOLOGIN: 1844d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_els.port_id[0] << 16) | 1845d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_els.port_id[1] << 8) | 1846d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_els.port_id[2]; 1847d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_ELS: 1848d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_ELS; 1849d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1850d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_CT: 1851d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 1; 1852d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_ct.port_id[0] << 16) | 1853d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_ct.port_id[1] << 8) | 1854d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_ct.port_id[2]; 1855d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_CT: 1856d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_CT_IU; 1857d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1858d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King default: 1859d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOTSUPP; 1860d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King }; 1861d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1862d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (port_id == -1) 1863d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EINVAL; 1864d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!mutex_trylock(&vhost->passthru_mutex)) 1865d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EBUSY; 1866d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1867d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->dd_data = (void *)port_id; 1868d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King req_seg = dma_map_sg(vhost->dev, job->request_payload.sg_list, 1869d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1870d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1871d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!req_seg) { 1872d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1873d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1874d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1875d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1876d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_seg = dma_map_sg(vhost->dev, job->reply_payload.sg_list, 1877d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1878d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1879d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!rsp_seg) { 1880d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1881d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1882d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1883d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1884d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1885d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1886d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (req_seg > 1 || rsp_seg > 1) { 1887d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EINVAL; 1888d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1889d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1890d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1891d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (issue_login) 1892d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_bsg_plogi(vhost, port_id); 1893d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1894d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1895d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1896d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely(rc || (rport && (rc = fc_remote_port_chkready(rport)))) || 1897d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1898d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1899d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1900d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1901d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1902d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1903d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1904d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad = &evt->iu.passthru; 1905d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1906d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(mad, 0, sizeof(*mad)); 1907d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.version = 1; 1908d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.opcode = IBMVFC_PASSTHRU; 1909d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 1910d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1911d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 1912d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King offsetof(struct ibmvfc_passthru_mad, iu); 1913d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.len = sizeof(mad->iu); 1914d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1915d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd_len = job->request_payload.payload_len; 1916d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp_len = job->reply_payload.payload_len; 1917d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.flags = fc_flags; 1918d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1919d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1920d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.va = sg_dma_address(job->request_payload.sg_list); 1921d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.len = sg_dma_len(job->request_payload.sg_list); 1922d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.va = sg_dma_address(job->reply_payload.sg_list); 1923d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.len = sg_dma_len(job->reply_payload.sg_list); 1924d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.scsi_id = port_id; 1925d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.tag = (u64)evt; 1926d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_len = mad->iu.rsp.len; 1927d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1928d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1929d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1930d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, 0); 1931d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1932d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1933d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) { 1934d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1935d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1936d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1937d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1938d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1939d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1940d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.passthru.common.status) 1941d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1942d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King else 1943d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = rsp_len; 1944d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1945d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1946d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1947d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1948d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->result = rc; 1949d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->job_done(job); 1950d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = 0; 1951d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingout: 1952d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1953d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1954d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->reply_payload.sg_list, 1955d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1956d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1957d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1958d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1959d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1960d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1961d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 197550ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 2000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2015230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 2016230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2017230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2018230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2038d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_match_rport - Match function for specified remote port 2039d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @evt: ibmvfc event struct 2040d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @device: device to match (rport) 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2043d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 1 if event matches rport / 0 if event does not match rport 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2045d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_match_rport(struct ibmvfc_event *evt, void *rport) 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2047d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct fc_rport *cmd_rport; 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2049d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (evt->cmnd) { 2050d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King cmd_rport = starget_to_rport(scsi_target(evt->cmnd->device)); 2051d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (cmd_rport == rport) 2052d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 1; 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2054d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 0; 2055d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King} 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2057d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King/** 2058d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_match_target - Match function for specified target 2059d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @evt: ibmvfc event struct 2060d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @device: device to match (starget) 2061d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 2062d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * Returns: 2063d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 1 if event matches starget / 0 if event does not match starget 2064d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King **/ 2065d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 2066d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King{ 2067d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 2068d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 1; 2069d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 0; 2070d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King} 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2072d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King/** 2073d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_match_lun - Match function for specified LUN 2074d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @evt: ibmvfc event struct 2075d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @device: device to match (sdev) 2076d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 2077d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * Returns: 2078d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 1 if event matches sdev / 0 if event does not match sdev 2079d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King **/ 2080d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 2081d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King{ 2082d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (evt->cmnd && evt->cmnd->device == device) 2083d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 1; 2084d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 0; 2085d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King} 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2087d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King/** 2088d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_wait_for_ops - Wait for ops to complete 2089d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @vhost: ibmvfc host struct 2090d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @device: device to match (starget or sdev) 2091d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @match: match function 2092d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 2093d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * Returns: 2094d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * SUCCESS / FAILED 2095d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King **/ 2096d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 2097d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King int (*match) (struct ibmvfc_event *, void *)) 2098d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King{ 2099d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct ibmvfc_event *evt; 2100d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King DECLARE_COMPLETION_ONSTACK(comp); 2101d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King int wait; 2102d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King unsigned long flags; 2103d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King signed long timeout = IBMVFC_ABORT_WAIT_TIMEOUT * HZ; 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2105d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ENTER; 2106d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King do { 2107d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King wait = 0; 2108d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2109d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2110d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (match(evt, device)) { 2111d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King evt->eh_comp = ∁ 2112d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King wait++; 2113d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2114d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2115d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2116230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2117d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (wait) { 2118d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King timeout = wait_for_completion_timeout(&comp, timeout); 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2120d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (!timeout) { 2121d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King wait = 0; 2122d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2123d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2124d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (match(evt, device)) { 2125d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King evt->eh_comp = NULL; 2126d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King wait++; 2127d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2128d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2129d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2130d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (wait) 2131d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 2132d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King LEAVE; 2133d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return wait ? FAILED : SUCCESS; 2134d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2135d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2136d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } while (wait); 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2138d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King LEAVE; 2139d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return SUCCESS; 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2156ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2157ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2195ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 2206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 2210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 2213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 2223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2227d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_match_key - Match function for specified cancel key 2228ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 2229d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @key: cancel key to match 2230ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2231ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2232d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 1 if event matches key / 0 if event does not match key 2233ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2234d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_match_key(struct ibmvfc_event *evt, void *key) 2235ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2236d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King unsigned long cancel_key = (unsigned long)key; 2237ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2238d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT && 2239d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King evt->iu.cmd.cancel_key == cancel_key) 2240ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 2241ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2242ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2243ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2244ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2245d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 2246d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * @sdev: scsi device to abort commands 2247d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 2248d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 2249d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * NOT send any cancel to the VIOS. That must be done separately. 2250ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2251ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2252d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King * 0 on success / other on failure 2253ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2254d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 2255ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2256d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2257d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2258d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct ibmvfc_cmd *tmf; 2259d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct ibmvfc_event *evt, *found_evt; 2260d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King union ibmvfc_iu rsp_iu; 2261d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 2262d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King int rc, rsp_rc = -EBUSY; 2263d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King unsigned long flags, timeout = IBMVFC_ABORT_TIMEOUT; 2264d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King int rsp_code = 0; 2265ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2266d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2267d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King found_evt = NULL; 2268d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2269d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2270d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King found_evt = evt; 2271d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King break; 2272ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2273d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2274d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2275d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (!found_evt) { 2276d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2277d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 2278ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2279d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return 0; 2280d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2281ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2282d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (vhost->state == IBMVFC_ACTIVE) { 2283d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King evt = ibmvfc_get_event(vhost); 2284d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 2285ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2286d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf = &evt->iu.cmd; 2287d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King memset(tmf, 0, sizeof(*tmf)); 2288d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 2289d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->resp.len = sizeof(tmf->rsp); 2290d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 2291d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->payload_len = sizeof(tmf->iu); 2292d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->resp_len = sizeof(tmf->rsp); 2293d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2294d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->tgt_scsi_id = rport->port_id; 2295d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 2296d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 2297d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 2298d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King evt->sync_iu = &rsp_iu; 2299d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2300d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King init_completion(&evt->comp); 2301d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2302d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2303d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2304d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2305d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2306d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (rsp_rc != 0) { 2307d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 2308d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return -EIO; 2309d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2310d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2311d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 2312d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King timeout = wait_for_completion_timeout(&evt->comp, timeout); 2313d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2314d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (!timeout) { 2315d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2316d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (!rc) { 2317d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rc = ibmvfc_wait_for_ops(vhost, sdev->hostdata, ibmvfc_match_key); 2318d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (rc == SUCCESS) 2319d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rc = 0; 2320ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2321ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2322d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (rc) { 2323d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_INFO, sdev, "Cancel failed, resetting host\n"); 2324d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_reset_host(vhost); 2325d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_rc = 0; 2326d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King goto out; 2327d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2328d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2329d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2330d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (rsp_iu.cmd.status) 2331d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2332d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2333d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (rsp_code) { 2334d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2335d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_code = fc_rsp->data.info.rsp_code; 2336d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2337d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 2338d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2339d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2340d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2341d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King fc_rsp->scsi_status); 2342d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rsp_rc = -EIO; 2343d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } else 2344d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 2345d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King 2346d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian Kingout: 2347d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2348d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_free_event(evt); 2349d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2350d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King return rsp_rc; 2351ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2352ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2353ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2362ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2363ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 2365ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 23683f01424c8128af7a69c824176bff195be457d6acBrian King fc_block_scsi_eh(cmd); 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2370ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2371ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2373ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2374ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2377ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2389ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2390ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 2392ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 23953f01424c8128af7a69c824176bff195be457d6acBrian King fc_block_scsi_eh(cmd); 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2397ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 2398ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2400ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2401ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2404ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 24084a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function 24094a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @sdev: scsi device struct 24104a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @data: return code 24114a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * 24124a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King **/ 24134a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2428ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2429ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2430ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2432ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 24363f01424c8128af7a69c824176bff195be457d6acBrian King fc_block_scsi_eh(cmd); 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 24384a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset); 2439ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2441ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2442ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2445ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 24583f01424c8128af7a69c824176bff195be457d6acBrian King fc_block_scsi_eh(cmd); 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2473d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct Scsi_Host *shost = rport_to_shost(rport); 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2475d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct fc_rport *dev_rport; 2476d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King struct scsi_device *sdev; 2477d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King unsigned long rc; 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2480d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King shost_for_each_device(sdev, shost) { 2481d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King dev_rport = starget_to_rport(scsi_target(sdev)); 2482d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King if (dev_rport != rport) 2483d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King continue; 2484d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2485d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King ibmvfc_abort_task_set(sdev); 2486d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King } 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2488d2fab5cf3979c55f802c96616daf96e9e8de1c80Brian King rc = ibmvfc_wait_for_ops(vhost, rport, ibmvfc_match_rport); 2489ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2490ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2495d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian Kingstatic const struct ibmvfc_async_desc ae_desc [] = { 2496402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "PLOGI", IBMVFC_AE_ELS_PLOGI, IBMVFC_DEFAULT_LOG_LEVEL + 1 }, 2497402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "LOGO", IBMVFC_AE_ELS_LOGO, IBMVFC_DEFAULT_LOG_LEVEL + 1 }, 2498402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "PRLO", IBMVFC_AE_ELS_PRLO, IBMVFC_DEFAULT_LOG_LEVEL + 1 }, 2499402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "N-Port SCN", IBMVFC_AE_SCN_NPORT, IBMVFC_DEFAULT_LOG_LEVEL + 1 }, 2500402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Group SCN", IBMVFC_AE_SCN_GROUP, IBMVFC_DEFAULT_LOG_LEVEL + 1 }, 2501402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Domain SCN", IBMVFC_AE_SCN_DOMAIN, IBMVFC_DEFAULT_LOG_LEVEL }, 2502402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Fabric SCN", IBMVFC_AE_SCN_FABRIC, IBMVFC_DEFAULT_LOG_LEVEL }, 2503402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Link Up", IBMVFC_AE_LINK_UP, IBMVFC_DEFAULT_LOG_LEVEL }, 2504402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Link Down", IBMVFC_AE_LINK_DOWN, IBMVFC_DEFAULT_LOG_LEVEL }, 2505402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Link Dead", IBMVFC_AE_LINK_DEAD, IBMVFC_DEFAULT_LOG_LEVEL }, 2506402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Halt", IBMVFC_AE_HALT, IBMVFC_DEFAULT_LOG_LEVEL }, 2507402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Resume", IBMVFC_AE_RESUME, IBMVFC_DEFAULT_LOG_LEVEL }, 2508402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings { "Adapter Failed", IBMVFC_AE_ADAPTER_FAILED, IBMVFC_DEFAULT_LOG_LEVEL }, 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2511d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian Kingstatic const struct ibmvfc_async_desc unknown_ae = { 2512402c6eec1bd04581c04de758e4efddc020b78f91Robert Jennings "Unknown async", 0, IBMVFC_DEFAULT_LOG_LEVEL 2513d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King}; 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2520d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian Kingstatic const struct ibmvfc_async_desc *ibmvfc_get_ae_desc(u64 ae) 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2526d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King return &ae_desc[i]; 2527d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King 2528d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King return &unknown_ae; 2529d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King} 2530d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King 2531d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian Kingstatic const struct { 2532d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King enum ibmvfc_ae_link_state state; 2533d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King const char *desc; 2534d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King} link_desc [] = { 2535d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King { IBMVFC_AE_LS_LINK_UP, " link up" }, 2536d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King { IBMVFC_AE_LS_LINK_BOUNCED, " link bounced" }, 2537d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King { IBMVFC_AE_LS_LINK_DOWN, " link down" }, 2538d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King { IBMVFC_AE_LS_LINK_DEAD, " link dead" }, 2539d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King}; 2540d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King 2541d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King/** 2542d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King * ibmvfc_get_link_state - Get text description for link state 2543d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King * @state: link state 2544d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King * 2545d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King **/ 2546d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian Kingstatic const char *ibmvfc_get_link_state(enum ibmvfc_ae_link_state state) 2547d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King{ 2548d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King int i; 2549d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King 2550d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King for (i = 0; i < ARRAY_SIZE(link_desc); i++) 2551d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King if (link_desc[i].state == state) 2552d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King return link_desc[i].desc; 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2554d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King return ""; 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2566d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King const struct ibmvfc_async_desc *desc = ibmvfc_get_ae_desc(crq->event); 25676d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2569d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King ibmvfc_log(vhost, desc->log_level, "%s event received. scsi_id: %llx, wwpn: %llx," 2570d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King " node_name: %llx%s\n", desc->desc, crq->scsi_id, crq->wwpn, crq->node_name, 2571d99e5f488ae28d9dfccc84435f4fd29bd1fe1b9bBrian King ibmvfc_get_link_state(crq->link_state)); 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2575497f9c504f76e7a751cd370604e1c8521743746dBrian King switch (crq->link_state) { 2576497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DOWN: 2577497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2578497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2579497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DEAD: 2580497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2581497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2582497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_UP: 2583497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_BOUNCED: 2584497f9c504f76e7a751cd370604e1c8521743746dBrian King default: 2585497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2586497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->delay_init = 1; 2587497f9c504f76e7a751cd370604e1c8521743746dBrian King __ibmvfc_reset_host(vhost); 2588497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2589497f9c504f76e7a751cd370604e1c8521743746dBrian King }; 2590497f9c504f76e7a751cd370604e1c8521743746dBrian King 2591497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2592497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LINK_UP: 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2594d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2595d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2598d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King case IBMVFC_AE_SCN_DOMAIN: 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2600d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2601d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 26066d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 26076d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 26116d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 26126d29cc56bead73b6f386cf43333708579deb5eedBrian King if (!crq->scsi_id && !crq->wwpn && !crq->node_name) 26136d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 26146d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->scsi_id && tgt->scsi_id != crq->scsi_id) 26156d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 26166d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->wwpn && tgt->ids.port_name != crq->wwpn) 26176d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 26186d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->node_name && tgt->ids.node_name != crq->node_name) 26196d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 2620017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (tgt->need_login && crq->event == IBMVFC_AE_ELS_LOGO) 2621017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 1; 2622017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (!tgt->need_login || crq->event == IBMVFC_AE_ELS_PLOGI) { 2623017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2624017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_reinit_host(vhost); 2625017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King } 26266d29cc56bead73b6f386cf43333708579deb5eedBrian King } 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2639775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event); 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2663861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2669861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 267779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 268473ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 268573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_REENABLE); 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 268973ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 269073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_RESET); 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2708775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2714775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 274643c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->scan_complete) 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2779ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2780ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2781ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2782ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2783ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2784ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2785ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2786ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2787ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2788ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2789ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2790ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2791ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2792ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2793ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2794ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2795ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2796ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2797ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2798ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2799ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2800ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2832e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie * @reason: calling context 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2837e881a172dac4d9ea3b2a1540041d872963c269bdMike Christiestatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth, 2838e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie int reason) 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2840e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie if (reason != SCSI_QDEPTH_DEFAULT) 2841e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie return -EOPNOTSUPP; 2842e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2921497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic ssize_t ibmvfc_show_host_capabilities(struct device *dev, 2922497f9c504f76e7a751cd370604e1c8521743746dBrian King struct device_attribute *attr, char *buf) 2923497f9c504f76e7a751cd370604e1c8521743746dBrian King{ 2924497f9c504f76e7a751cd370604e1c8521743746dBrian King struct Scsi_Host *shost = class_to_shost(dev); 2925497f9c504f76e7a751cd370604e1c8521743746dBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2926497f9c504f76e7a751cd370604e1c8521743746dBrian King return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities); 2927497f9c504f76e7a751cd370604e1c8521743746dBrian King} 2928497f9c504f76e7a751cd370604e1c8521743746dBrian King 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 297385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL); 297485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL); 297585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL); 297685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL); 297785e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL); 2978497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL); 297985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR, 298085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King ibmvfc_show_log_level, ibmvfc_store_log_level); 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 29852c3c8bea608866d8bd9dcf92657d57fdcac011c5Chris Wright * @filp: open sysfs file 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 29952c3c8bea608866d8bd9dcf92657d57fdcac011c5Chris Wrightstatic ssize_t ibmvfc_read_trace(struct file *filp, struct kobject *kobj, 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 303085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_partition_name, 303185e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_device_name, 303285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_port_loc_code, 303385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_drc_name, 303485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_npiv_version, 3035497f9c504f76e7a751cd370604e1c8521743746dBrian King &dev_attr_capabilities, 303685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_log_level, 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 3048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 3049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 3050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 3051ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 3052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 3053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 3054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 3055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 3056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 3057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 3058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 3059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 3060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 3061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 3062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 3066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 3070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 3072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 3079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 3080f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King rmb(); 3081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 3089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 3093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 3095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 3100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 3102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 3103f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King rmb(); 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 3117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 3119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 3121039a08981a49e05f09db969cdd3f38f05a5df46fBrian King unsigned long flags; 3122039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3123039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 3124039a08981a49e05f09db969cdd3f38f05a5df46fBrian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 3125039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_schedule(&vhost->tasklet); 3126039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3127039a08981a49e05f09db969cdd3f38f05a5df46fBrian King return IRQ_HANDLED; 3128039a08981a49e05f09db969cdd3f38f05a5df46fBrian King} 3129039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3130039a08981a49e05f09db969cdd3f38f05a5df46fBrian King/** 3131039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * ibmvfc_tasklet - Interrupt handler tasklet 3132039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * @data: ibmvfc host struct 3133039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * 3134039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Returns: 3135039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Nothing 3136039a08981a49e05f09db969cdd3f38f05a5df46fBrian King **/ 3137039a08981a49e05f09db969cdd3f38f05a5df46fBrian Kingstatic void ibmvfc_tasklet(void *data) 3138039a08981a49e05f09db969cdd3f38f05a5df46fBrian King{ 3139039a08981a49e05f09db969cdd3f38f05a5df46fBrian King struct ibmvfc_host *vhost = data; 3140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 3141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 3143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 3145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 3148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 3149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 3151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 3152f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King wmb(); 3153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3155f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King /* Pull all the valid messages off the CRQ */ 3156f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 3158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 3159f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King wmb(); 3160f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } 3161f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King 3162f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_enable_interrupts(vdev); 3163f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 3165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 31664081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 3167f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King wmb(); 3168f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3169f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_disable_interrupts(vdev); 3170f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King ibmvfc_handle_crq(crq, vhost); 3171f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King crq->valid = 0; 3172f5832fa2f8dc39adcf3ae348d2d6383163235e79Brian King wmb(); 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 3175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 3184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 3190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 3191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 3192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 3196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 3198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 31997d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if step will be retried / 0 if not 32007d0e462247241b8ec2d377306203b58c7f423553Brian King * 3201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 32027d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 3203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 32051c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 3206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 32087d0e462247241b8ec2d377306203b58c7f423553Brian King return 0; 3209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 32117d0e462247241b8ec2d377306203b58c7f423553Brian King return 1; 3212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3214a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/* Defined in FC-LS */ 3215a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic const struct { 3216a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code; 3217a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int retry; 3218a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int logged_in; 3219a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} prli_rsp [] = { 3220a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 0, 1, 0 }, 3221a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 1, 0, 1 }, 3222a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 2, 1, 0 }, 3223a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 3, 1, 0 }, 3224a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 4, 0, 0 }, 3225a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 5, 0, 0 }, 3226a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 6, 0, 1 }, 3227a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 7, 0, 0 }, 3228a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 8, 1, 0 }, 3229a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King}; 3230a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3231a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/** 3232a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * ibmvfc_get_prli_rsp - Find PRLI response index 3233a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * @flags: PRLI response flags 3234a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * 3235a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King **/ 3236a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic int ibmvfc_get_prli_rsp(u16 flags) 3237a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King{ 3238a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int i; 3239a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code = (flags & 0x0f00) >> 8; 3240a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3241a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King for (i = 0; i < ARRAY_SIZE(prli_rsp); i++) 3242a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[i].code == code) 3243a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return i; 3244a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3245a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return 0; 3246a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} 3247a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 3258a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King struct ibmvfc_prli_svc_parms *parms = &rsp->parms; 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 32607d0e462247241b8ec2d377306203b58c7f423553Brian King int index, level = IBMVFC_DEFAULT_LOG_LEVEL; 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3266a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n", 3267a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King parms->type, parms->flags, parms->service_parms); 3268a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3269a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->type == IBMVFC_SCSI_FCP_TYPE) { 3270a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King index = ibmvfc_get_prli_rsp(parms->flags); 3271a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[index].logged_in) { 3272a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) { 3273a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->need_login = 0; 3274a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles = 0; 3275a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC) 3276a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET; 3277a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC) 3278a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 327943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 1; 3280a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3281a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3282a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else if (prli_rsp[index].retry) 3283a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3284a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King else 3285a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3286a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3287a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3296017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if ((rsp->status & IBMVFC_VIOS_FAILURE) && rsp->error == IBMVFC_PLOGI_REQUIRED) 3297017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3298017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (tgt->logo_rcvd) 3299017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3300017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 33017d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 330210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 330310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 33047d0e462247241b8ec2d377306203b58c7f423553Brian King 33057d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 33067d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 33077d0e462247241b8ec2d377306203b58c7f423553Brian King rsp->status, rsp->error, status); 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 3322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 3324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 33667d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 33967d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 339710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 339810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 33997d0e462247241b8ec2d377306203b58c7f423553Brian King 34007d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 34017d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 34027d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 34037d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3427017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 0; 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3523989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3524989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3525989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3526989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3527989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3528989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3529989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3530989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3531989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3532989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3533989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3534989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3535989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3536989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3537989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3538989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3539989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3540989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3541989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3542989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3543989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3544989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3545989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3546989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3547989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3548989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3549989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3550989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3551989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3552989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3553989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3554989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3555989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3556989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3557989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3558989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 355910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3560989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3561989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3562989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3563989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3564989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 35655e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3566989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3567989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3568989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3569989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3570989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 35715e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3572989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3573989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3574989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3575989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3576989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3577989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3578989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3579989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3580989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3581989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3582989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3583989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3584989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3585989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3586989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3587989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3588989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3589989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3590989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3591989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3592989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3593989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3594989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3595989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3596989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3597989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3598989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3599989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3600989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3601989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3602989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3603989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3604989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3605989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3606989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3607989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3608989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3609989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3610989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3611989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3612989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3613989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3614989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3615989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 361610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC 361710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @evt: ibmvfc event struct 361810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 361910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * Just cleanup this event struct. Everything else is handled by 362010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * the ADISC completion handler. If the ADISC never actually comes 362110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * back, we still have the timer running on the ADISC event struct 362210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * which will fire and cause the CRQ to get reset. 362310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 362410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 362510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt) 362610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 362710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = evt->vhost; 362810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_target *tgt = evt->tgt; 362910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 363010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC cancel complete\n"); 363110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 363210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_free_event(evt); 363310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 363410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King wake_up(&vhost->work_wait_q); 363510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 363610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 363710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 363810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_adisc_timeout - Handle an ADISC timeout 363910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @tgt: ibmvfc target struct 364010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 364110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * If an ADISC times out, send a cancel. If the cancel times 364210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * out, reset the CRQ. When the ADISC comes back as cancelled, 364310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * log back into the target. 364410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 364510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt) 364610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 364710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = tgt->vhost; 364810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_event *evt; 364910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_tmf *tmf; 365010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King unsigned long flags; 365110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King int rc; 365210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 365310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC timeout\n"); 365410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 365510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (vhost->abort_threads >= disc_threads || 365610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT || 365710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->state != IBMVFC_INITIALIZING || 365810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) { 365910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 366010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King return; 366110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 366210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 366310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads++; 366410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_get(&tgt->kref); 366510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt = ibmvfc_get_event(vhost); 366610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT); 366710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 366810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt->tgt = tgt; 366910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf = &evt->iu.tmf; 367010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King memset(tmf, 0, sizeof(*tmf)); 367110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.version = 1; 367210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.opcode = IBMVFC_TMF_MAD; 367310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.length = sizeof(*tmf); 367410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->scsi_id = tgt->scsi_id; 367510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->cancel_key = tgt->cancel_key; 367610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 367710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 367810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 367910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (rc) { 368010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc); 368110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 368210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 368310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King __ibmvfc_reset_host(vhost); 368410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } else 368510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "Attempting to cancel ADISC\n"); 368610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 368710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 368810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 368910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 3690989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3691989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3692989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 369310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * When sending an ADISC we end up with two timers running. The 369410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * first timer is the timer in the ibmvfc target struct. If this 369510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, we send a cancel to the target. The second timer is the 369610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * timer on the ibmvfc event for the ADISC, which is longer. If that 369710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, it means the ADISC timed out and our attempt to cancel it 369810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * also failed, so we need to reset the CRQ. 3699989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3700989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3701989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3702989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3703989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3704989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3705989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3706989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3707989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3708989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3709989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3710989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3711989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3712989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3713989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3714989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3715989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3716989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3717989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3718989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 371910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mad->iu.cancel_key = tgt->cancel_key; 3720989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3721989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3722989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3723989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3724989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3725989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3726989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3727989b854579875b38d45fffa7f8c89177f7698cd3Brian King 372810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (timer_pending(&tgt->timer)) 372910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ)); 373010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King else { 373110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.data = (unsigned long) tgt; 373210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ); 373310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout; 373410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King add_timer(&tgt->timer); 373510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 373610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 3737989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 373810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) { 3739989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 374010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3741989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3742989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3743989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3744989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3745989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3746989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3747989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 37587d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3768989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3769989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 37837d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 378410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 378510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 37867d0e462247241b8ec2d377306203b58c7f423553Brian King 37877d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 37887d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 37897d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 37907d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 38577270b9bde5f382e730e1ef69d6c1b34d388df2b0Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO); 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3859775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n", 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 38640883e3b3a85b5860b7729f1279a52e95b87dea97Brian King memset(tgt, 0, sizeof(*tgt)); 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 386910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->cancel_key = vhost->task_set++; 387010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King init_timer(&tgt->timer); 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 39097d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 39187d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 39197d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n", 39207d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 39727d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 39807d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 39837d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n", 39847d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 4000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 4002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 4003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 4004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 4005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 4006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 4010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 4011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 4012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 4013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 4014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 401779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 1; 4018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 4019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 4020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 4021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 4022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 4024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 4025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 4026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 4027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 4028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 4029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 4030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 4031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 4032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 4033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 4034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 4035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 4036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 4037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 4039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 4040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 4041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 4042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 4046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 4050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 4052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 4053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 4055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 4056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 4057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 4062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 4063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 4064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 4072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 4073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 407679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout 407779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 407879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 407979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 408079111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt) 408179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 408279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_host *vhost = evt->vhost; 408379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King u32 mad_status = evt->xfer_iu->npiv_logout.common.status; 408479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 408579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_free_event(evt); 408679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 408779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King switch (mad_status) { 408879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_SUCCESS: 408979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (list_empty(&vhost->sent) && 409079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) { 4091861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 409279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King return; 409379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 409479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 409579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_FAILED: 409679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_NOT_SUPPORTED: 409779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_CRQ_ERROR: 409879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_DRIVER_FAILED: 409979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King default: 410079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status); 410179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 410279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 410379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 410479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 410579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 410679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 410779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 410879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout - Issue an NPIV Logout 410979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 411079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 411179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 411279111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *vhost) 411379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 411479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_npiv_logout_mad *mad; 411579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_event *evt; 411679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 411779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King evt = ibmvfc_get_event(vhost); 411879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT); 411979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 412079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad = &evt->iu.npiv_logout; 412179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King memset(mad, 0, sizeof(*mad)); 412279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.version = 1; 412379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.opcode = IBMVFC_NPIV_LOGOUT; 412479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad); 412579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 412679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT); 412779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 412879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 412979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "Sent NPIV logout\n"); 413079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King else 413179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 413279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 413379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 413479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 4169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 417079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 4175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 4178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 418379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 4184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 418710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 418973ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_RESET: 419073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_REENABLE: 4191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 4200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 4212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 4218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 4220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 4223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 4225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 4226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 4227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 4228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 4229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 4230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 4231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 4232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 4236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 4237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 4240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 424243c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 4243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 424543c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Adding rport\n"); 424643c8da907ccc656935d1085701f4db83385d8a59Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 424743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 424843c8da907ccc656935d1085701f4db83385d8a59Brian King 424943c8da907ccc656935d1085701f4db83385d8a59Brian King if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 425043c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Deleting rport\n"); 425143c8da907ccc656935d1085701f4db83385d8a59Brian King list_del(&tgt->queue); 4252d5da3040d798df4bbb62579b97f8b6b83749da22Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DELETED_RPORT); 42530883e3b3a85b5860b7729f1279a52e95b87dea97Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 425443c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_delete(rport); 425543c8da907ccc656935d1085701f4db83385d8a59Brian King del_timer_sync(&tgt->timer); 425643c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 42570883e3b3a85b5860b7729f1279a52e95b87dea97Brian King return; 4258d5da3040d798df4bbb62579b97f8b6b83749da22Brian King } else if (rport && tgt->action == IBMVFC_TGT_ACTION_DELETED_RPORT) { 4259d5da3040d798df4bbb62579b97f8b6b83749da22Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4260d5da3040d798df4bbb62579b97f8b6b83749da22Brian King return; 42610883e3b3a85b5860b7729f1279a52e95b87dea97Brian King } 42620883e3b3a85b5860b7729f1279a52e95b87dea97Brian King 4263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 4264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 426543c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->rport = rport; 4266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 4267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 426852d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 4269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 4270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 4271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 4272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 4273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 4274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 4275d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport->rqst_q) 42768a78362c4eefc1deddbefe2c7f38aabbc2429d6bMartin K. Petersen blk_queue_max_segments(rport->rqst_q, 1); 4277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 4278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 4279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 4284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 4288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 429273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King int rc; 4293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 4295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 4297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 429979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 4301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 430273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_RESET: 430373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King vhost->action = IBMVFC_HOST_ACTION_TGT_DEL; 430473ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 430573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King rc = ibmvfc_reset_crq(vhost); 430673ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 4307d24099df9e379b150c164da354b8c6fdafc73257Brian King if (rc == H_CLOSED) 4308d24099df9e379b150c164da354b8c6fdafc73257Brian King vio_enable_interrupts(to_vio_dev(vhost->dev)); 4309d24099df9e379b150c164da354b8c6fdafc73257Brian King else if (rc || (rc = ibmvfc_send_crq_init(vhost)) || 4310d24099df9e379b150c164da354b8c6fdafc73257Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 431173ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 431273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc); 431373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King } 431473ee5d8672871bd69077ca71e7208a36bfa6343cBrian King break; 431573ee5d8672871bd69077ca71e7208a36bfa6343cBrian King case IBMVFC_HOST_ACTION_REENABLE: 431673ee5d8672871bd69077ca71e7208a36bfa6343cBrian King vhost->action = IBMVFC_HOST_ACTION_TGT_DEL; 431773ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 431873ee5d8672871bd69077ca71e7208a36bfa6343cBrian King rc = ibmvfc_reenable_crq_queue(vhost); 431973ee5d8672871bd69077ca71e7208a36bfa6343cBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 432073ee5d8672871bd69077ca71e7208a36bfa6343cBrian King if (rc || (rc = ibmvfc_send_crq_init(vhost))) { 432173ee5d8672871bd69077ca71e7208a36bfa6343cBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 432273ee5d8672871bd69077ca71e7208a36bfa6343cBrian King dev_err(vhost->dev, "Error after enable (rc=%d)\n", rc); 432373ee5d8672871bd69077ca71e7208a36bfa6343cBrian King } 432473ee5d8672871bd69077ca71e7208a36bfa6343cBrian King break; 432579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 432679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step(vhost); 432779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 4328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 43301c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 43311c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 43321c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4333d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King ssleep(15); 43341c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 43351c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 43361c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 4337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 4339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 4341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 4342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 4352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 4353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 435510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 4358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 4359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 4360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 4361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 4362d5da3040d798df4bbb62579b97f8b6b83749da22Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DELETED_RPORT); 4363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 4365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 436610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer_sync(&tgt->timer); 4367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 4368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 437310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 437443c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->reinit) { 437543c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->reinit = 0; 437643c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_block_requests(vhost->host); 437743c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 437843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 437943c8da907ccc656935d1085701f4db83385d8a59Brian King } else { 438043c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 438143c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 438243c8da907ccc656935d1085701f4db83385d8a59Brian King wake_up(&vhost->init_wait_q); 438343c8da907ccc656935d1085701f4db83385d8a59Brian King schedule_work(&vhost->rport_add_work_q); 438443c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->init_retries = 0; 438543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 438643c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_unblock_requests(vhost->host); 438743c8da907ccc656935d1085701f4db83385d8a59Brian King } 438843c8da907ccc656935d1085701f4db83385d8a59Brian King 438910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 439010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 439110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 439210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 439310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 4394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 4395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 4396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 4398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 4399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 4404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 4406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 441610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 441710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 4418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 4428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 4429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 4432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 4434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 4436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 4439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 4441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 4442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 4443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 4445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 4450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 4453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 4458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 4461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 4462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 4465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 4467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 4469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 4471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 4472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 4475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 4477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 4480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 4481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 4482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 44838d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 4484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 4485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 4487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 4488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 4490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 4491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 4492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 4494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 4495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 4496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 4497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 4498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 4501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4502039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost); 4503039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 4504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 4505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 4506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 4510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 4511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 4515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 4519039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 4520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 4521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 4522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 4523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 4524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 4525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 4526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 4527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 4532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 4536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 4538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 4543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 4545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 4547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 4550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 4557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 4563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 4569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 4570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 4571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 4572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 4575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 4576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 4577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 4578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 45798d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 4580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 4581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 4582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 4585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 4586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 4587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 4589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 4590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 4591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 4594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 4595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 4597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 4598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 4599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 4602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 4603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 4604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 4606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 4607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 4608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 4611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 4612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 4614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 4615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4616d68866927ddd0ed3145cb3fba4a1c07ca5e4709dSage Weil vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 4617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 4618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 4620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 4621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 4622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 4628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 4630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 4631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 4633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 4634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 4636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 4638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 4639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 4641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 4643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 464843c8da907ccc656935d1085701f4db83385d8a59Brian King * ibmvfc_rport_add_thread - Worker thread for rport adds 464943c8da907ccc656935d1085701f4db83385d8a59Brian King * @work: work struct 465043c8da907ccc656935d1085701f4db83385d8a59Brian King * 465143c8da907ccc656935d1085701f4db83385d8a59Brian King **/ 465243c8da907ccc656935d1085701f4db83385d8a59Brian Kingstatic void ibmvfc_rport_add_thread(struct work_struct *work) 465343c8da907ccc656935d1085701f4db83385d8a59Brian King{ 465443c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host, 465543c8da907ccc656935d1085701f4db83385d8a59Brian King rport_add_work_q); 465643c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_target *tgt; 465743c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 465843c8da907ccc656935d1085701f4db83385d8a59Brian King unsigned long flags; 465943c8da907ccc656935d1085701f4db83385d8a59Brian King int did_work; 466043c8da907ccc656935d1085701f4db83385d8a59Brian King 466143c8da907ccc656935d1085701f4db83385d8a59Brian King ENTER; 466243c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 466343c8da907ccc656935d1085701f4db83385d8a59Brian King do { 466443c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 0; 466543c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state != IBMVFC_ACTIVE) 466643c8da907ccc656935d1085701f4db83385d8a59Brian King break; 466743c8da907ccc656935d1085701f4db83385d8a59Brian King 466843c8da907ccc656935d1085701f4db83385d8a59Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 466943c8da907ccc656935d1085701f4db83385d8a59Brian King if (tgt->add_rport) { 467043c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 1; 467143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 467243c8da907ccc656935d1085701f4db83385d8a59Brian King kref_get(&tgt->kref); 467343c8da907ccc656935d1085701f4db83385d8a59Brian King rport = tgt->rport; 467443c8da907ccc656935d1085701f4db83385d8a59Brian King if (!rport) { 467543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 467643c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_tgt_add_rport(tgt); 467743c8da907ccc656935d1085701f4db83385d8a59Brian King } else if (get_device(&rport->dev)) { 467843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 467943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Setting rport roles\n"); 468043c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_rolechg(rport, tgt->ids.roles); 468143c8da907ccc656935d1085701f4db83385d8a59Brian King put_device(&rport->dev); 468243c8da907ccc656935d1085701f4db83385d8a59Brian King } 468343c8da907ccc656935d1085701f4db83385d8a59Brian King 468443c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 468543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 468643c8da907ccc656935d1085701f4db83385d8a59Brian King break; 468743c8da907ccc656935d1085701f4db83385d8a59Brian King } 468843c8da907ccc656935d1085701f4db83385d8a59Brian King } 468943c8da907ccc656935d1085701f4db83385d8a59Brian King } while(did_work); 469043c8da907ccc656935d1085701f4db83385d8a59Brian King 469143c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state == IBMVFC_ACTIVE) 469243c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->scan_complete = 1; 469343c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 469443c8da907ccc656935d1085701f4db83385d8a59Brian King LEAVE; 469543c8da907ccc656935d1085701f4db83385d8a59Brian King} 469643c8da907ccc656935d1085701f4db83385d8a59Brian King 469743c8da907ccc656935d1085701f4db83385d8a59Brian King/** 4698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 4699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 4701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 4706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 4708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 4709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 4710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 4711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 4714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 4715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 4716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 4717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 4720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 4721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 4722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 4723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 4724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 4725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 4726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 4728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 4729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 4730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 4731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 4732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 4733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 4734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 4735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 473610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->task_set = 1; 4737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 4738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 4739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 474043c8da907ccc656935d1085701f4db83385d8a59Brian King INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread); 4741d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_init(&vhost->passthru_mutex); 4742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 4744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 4745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 4747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 4748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 4750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 4751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 4752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 4753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 4756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 4757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 4758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 4761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 4762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4768a5110f2983bdf931d9819f88505775b16de8b99eMike Christie fc_host_dev_loss_tmo(shost) = IBMVFC_DEV_LOSS_TMO; 4769a5110f2983bdf931d9819f88505775b16de8b99eMike Christie 4770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4776d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (shost_to_fc_host(shost)->rqst_q) 47778a78362c4eefc1deddbefe2c7f38aabbc2429d6bMartin K. Petersen blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1); 4778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 48187043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 48197043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 48202d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 48217043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 48227043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 48232d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 48242d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 484339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 4844b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * ibmvfc_resume - Resume from suspend 4845b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * @dev: device struct 4846b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * 4847b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * We may have lost an interrupt across suspend/resume, so kick the 4848b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * interrupt handler 4849b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * 4850b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King */ 4851b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian Kingstatic int ibmvfc_resume(struct device *dev) 4852b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King{ 4853b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King unsigned long flags; 4854b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 4855b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King struct vio_dev *vdev = to_vio_dev(dev); 4856b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4857b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4858b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King vio_disable_interrupts(vdev); 4859b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King tasklet_schedule(&vhost->tasklet); 4860b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4861b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King return 0; 4862b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King} 4863b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4864b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King/** 486539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 486639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 486739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 486839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 486939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 487039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 487139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 487239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 487339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 487439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 487539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 487639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 487739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4884b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian Kingstatic struct dev_pm_ops ibmvfc_pm_ops = { 4885b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King .resume = ibmvfc_resume 4886b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King}; 4887b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 489239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4896b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King .pm = &ibmvfc_pm_ops, 4897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 49079ab3610f9c24e7f303f1b0e6bb88a5f804ab847eBrian King .show_host_maxframe_size = 1, 4908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4932d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 4933d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_request = ibmvfc_bsg_request, 4934d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_timeout = ibmvfc_bsg_timeout, 4935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4977