ibmvfc.c revision 5e47167b6be0ca24cbb04fb71ea611ab7c089aff
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> 31072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/of.h> 32072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/stringify.h> 33072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/firmware.h> 34072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/irq.h> 35072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/vio.h> 36072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi.h> 37072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_cmnd.h> 38072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_host.h> 39072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_device.h> 40072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_tcq.h> 41072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_transport_fc.h> 42072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include "ibmvfc.h" 43072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 44072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int init_timeout = IBMVFC_INIT_TIMEOUT; 45072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int default_timeout = IBMVFC_DEFAULT_TIMEOUT; 46072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_lun = IBMVFC_MAX_LUN; 47072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_targets = IBMVFC_MAX_TARGETS; 48072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT; 49072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS; 50072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int dev_loss_tmo = IBMVFC_DEV_LOSS_TMO; 51072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int ibmvfc_debug = IBMVFC_DEBUG; 52072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL; 53072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic LIST_HEAD(ibmvfc_head); 54072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic DEFINE_SPINLOCK(ibmvfc_driver_lock); 55072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_transport_template *ibmvfc_transport_template; 56072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 57072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DESCRIPTION("IBM Virtual Fibre Channel Driver"); 58072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>"); 59072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_LICENSE("GPL"); 60072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_VERSION(IBMVFC_DRIVER_VERSION); 61072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 62072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(init_timeout, init_timeout, uint, S_IRUGO | S_IWUSR); 63072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds. " 64072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_INIT_TIMEOUT) "]"); 65072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(default_timeout, default_timeout, uint, S_IRUGO | S_IWUSR); 66072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(default_timeout, 67072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Default timeout in seconds for initialization and EH commands. " 68072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_TIMEOUT) "]"); 69072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_requests, max_requests, uint, S_IRUGO); 70072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_requests, "Maximum requests for this adapter. " 71072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_REQUESTS_DEFAULT) "]"); 72072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_lun, max_lun, uint, S_IRUGO); 73072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_lun, "Maximum allowed LUN. " 74072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_LUN) "]"); 75072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_targets, max_targets, uint, S_IRUGO); 76072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_targets, "Maximum allowed targets. " 77072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_TARGETS) "]"); 78545ef9a2dc1e5ac0463f3754e239ffcc5aaa92e2Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO); 79072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. " 80072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]"); 81072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR); 82072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(debug, "Enable driver debug information. " 83072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEBUG) "]"); 84072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(dev_loss_tmo, dev_loss_tmo, uint, S_IRUGO | S_IWUSR); 85072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC " 86072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "transport should insulate the loss of a remote port. Once this " 87072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "value is exceeded, the scsi target is removed. " 88072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEV_LOSS_TMO) "]"); 89072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(log_level, log_level, uint, 0); 90072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. " 91072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]"); 92072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 93072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 94072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 95072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 error; 96072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 result; 97072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 retry; 98072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int log; 99072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} cmd_status [] = { 101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" }, 102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" }, 103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" }, 104752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 1, 1, "network down" }, 105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" }, 106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" }, 107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" }, 108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_REGISTER, DID_ERROR, 1, 1, "unable to register" }, 109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_BUSY, DID_BUS_BUSY, 1, 0, "transport busy" }, 110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" }, 111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" }, 112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" }, 113497f9c504f76e7a751cd370604e1c8521743746dBrian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" }, 114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" }, 115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" }, 117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" }, 118752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" }, 119752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" }, 120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 121752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" }, 122752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" }, 123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 124646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 14679111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *); 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 2794a2837d4fcaf8a2c2ad61523287073d0c14b9ed0Brian King ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_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; 50479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 50810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5262d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5272d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5282d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5292d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 561cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King * @relogin: is this a re-login? 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 566cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost, int relogin) 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5711c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 580cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King if (!relogin) { 581cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 582cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King vhost->async_crq.cur = 0; 583cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King } 584cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 5865e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 650039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 65679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 70379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 773ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 774ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 775ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 81979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 82279111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost) 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 83879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 84179111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 84279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 84379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT && 84479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 84579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King scsi_block_requests(vhost->host); 84679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO); 84779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step = ibmvfc_npiv_logout; 84879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King wake_up(&vhost->work_wait_q); 84979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } else 85079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 85179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 85279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 85379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 85479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_reset_host - Reset the connection to the server 85579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 85679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8707d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if init will be retried / 0 if not 8717d0e462247241b8ec2d377306203b58c7f423553Brian King * 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 8737d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 8757d0e462247241b8ec2d377306203b58c7f423553Brian King int retry = 0; 8767d0e462247241b8ec2d377306203b58c7f423553Brian King 877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 8781c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 1; 8791c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 8831c41fa8288277e76785acb50f52bb2f39509f903Brian King } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES) 884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 8857d0e462247241b8ec2d377306203b58c7f423553Brian King else { 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 8877d0e462247241b8ec2d377306203b58c7f423553Brian King retry = 1; 8887d0e462247241b8ec2d377306203b58c7f423553Brian King } 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 8927d0e462247241b8ec2d377306203b58c7f423553Brian King return retry; 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 896b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 902b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 909b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 910b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 912b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 917b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 923b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 930b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 969775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "Unknown port speed: %lld Gbit\n", 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 1003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 1006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 10070ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 10080ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 10090ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 1010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 1021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1035b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1036b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1037b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1038b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1039b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1040b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1041b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1042b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1043b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1044b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1045b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1054b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1056b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1057b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1069b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1071b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1072b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1084b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1086b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1087b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 11003eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 11013eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 11023eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 11033eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1172497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags = IBMVFC_FLUSH_ON_HALT; 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1174497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags |= IBMVFC_CLIENT_MIGRATED; 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 117952d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 118271610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME); 1183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 118571610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers location = location ? location : dev_name(vhost->dev); 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1288ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 135964b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scsi_dma_unmap(scmd); 136064b840dd88eb2054f86c72ed6d989cb8681f0058Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 136164b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1420a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King mb(); 1421a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14750ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 14982bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 14992bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 15162bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1518646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 1519646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King ibmvfc_reinit_host(evt->vhost); 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 152150119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 152250119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 152350119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1535ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1536ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1537ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 167350ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 1711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 1718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 1725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 1734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 1735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 1737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 1738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 1743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 1766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 1786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 1796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 1800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 1807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 1814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 1823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 1824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 1825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 1827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 1828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 1833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1835ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 1836ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 1837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 1838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 1840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 1843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 1857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 1866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 1868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 1870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 1871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 1872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 1873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1874ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 1875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 1877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 1885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 1889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 1892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 1897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 1898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 1902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1906ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 1907ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1908ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 1909ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1910ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1911ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 1912ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1913ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 1914ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1915ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 1916ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1917ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1918ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1919ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1920ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1921ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 1922ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1923ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 1924ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1925ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1926ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 1927ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1928ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 1929ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1930ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 1931ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1932ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1933ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1934ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1935ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1936ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 1937ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 1938ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 1939ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 1940ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1941ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1942ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 1943ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1944ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 1945ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 1946ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1947ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 1948ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 1949ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 1950ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 1951ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 1952ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1953ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 1954ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 1955ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1956ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1957ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1958ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1959ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 1960ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1961ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1962ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1963ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1964ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1965ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 1966ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 1967ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1968ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 1969ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1970ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1971ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1972ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1973ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1974ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1975ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1976ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1977ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1978ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 1979ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 1980ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1981ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 1982ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1983ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1984ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 1985ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1986ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1987ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 1988ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1989ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1990ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 1993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1999ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2000ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 2002ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2006ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2007ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2009ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2010ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2013ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2025ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2026ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 2028ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2032ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 2033ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2035ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2036ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2039ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_cancel_all - Device iterated cancel all function 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_cancel_all(struct scsi_device *sdev, void *data) 2049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2075ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2076ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2077ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2079ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2085ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2087ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2088ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2091ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2123ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2129ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2130ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2131ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2132ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2185775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx," 2186775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2190497f9c504f76e7a751cd370604e1c8521743746dBrian King switch (crq->link_state) { 2191497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DOWN: 2192497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2193497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2194497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DEAD: 2195497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2196497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2197497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_UP: 2198497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_BOUNCED: 2199497f9c504f76e7a751cd370604e1c8521743746dBrian King default: 2200497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2201497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->delay_init = 1; 2202497f9c504f76e7a751cd370604e1c8521743746dBrian King __ibmvfc_reset_host(vhost); 2203497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2204497f9c504f76e7a751cd370604e1c8521743746dBrian King }; 2205497f9c504f76e7a751cd370604e1c8521743746dBrian King 2206497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2207497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LINK_UP: 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2209d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2210d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2213d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King case IBMVFC_AE_SCN_DOMAIN: 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2215d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2216d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reinit_host(vhost); 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2237775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event); 2238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2261cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2267cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 227579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 2276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2315775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2321775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 235343c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->scan_complete) 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2386ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2387ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2388ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2389ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2390ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2391ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2392ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2393ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2394ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2395ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2396ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2397ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2398ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2399ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2400ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2401ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2402ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2403ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2404ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2405ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2406ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2407ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2526497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic ssize_t ibmvfc_show_host_capabilities(struct device *dev, 2527497f9c504f76e7a751cd370604e1c8521743746dBrian King struct device_attribute *attr, char *buf) 2528497f9c504f76e7a751cd370604e1c8521743746dBrian King{ 2529497f9c504f76e7a751cd370604e1c8521743746dBrian King struct Scsi_Host *shost = class_to_shost(dev); 2530497f9c504f76e7a751cd370604e1c8521743746dBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2531497f9c504f76e7a751cd370604e1c8521743746dBrian King return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities); 2532497f9c504f76e7a751cd370604e1c8521743746dBrian King} 2533497f9c504f76e7a751cd370604e1c8521743746dBrian King 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 257885e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL); 257985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL); 258085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL); 258185e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL); 258285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL); 2583497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL); 258485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR, 258585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King ibmvfc_show_log_level, ibmvfc_store_log_level); 2586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 263485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_partition_name, 263585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_device_name, 263685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_port_loc_code, 263785e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_drc_name, 263885e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_npiv_version, 2639497f9c504f76e7a751cd370604e1c8521743746dBrian King &dev_attr_capabilities, 264085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_log_level, 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2655ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 2714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 2723039a08981a49e05f09db969cdd3f38f05a5df46fBrian King unsigned long flags; 2724039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 2725039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2726039a08981a49e05f09db969cdd3f38f05a5df46fBrian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 2727039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_schedule(&vhost->tasklet); 2728039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2729039a08981a49e05f09db969cdd3f38f05a5df46fBrian King return IRQ_HANDLED; 2730039a08981a49e05f09db969cdd3f38f05a5df46fBrian King} 2731039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 2732039a08981a49e05f09db969cdd3f38f05a5df46fBrian King/** 2733039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * ibmvfc_tasklet - Interrupt handler tasklet 2734039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * @data: ibmvfc host struct 2735039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * 2736039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Returns: 2737039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Nothing 2738039a08981a49e05f09db969cdd3f38f05a5df46fBrian King **/ 2739039a08981a49e05f09db969cdd3f38f05a5df46fBrian Kingstatic void ibmvfc_tasklet(void *data) 2740039a08981a49e05f09db969cdd3f38f05a5df46fBrian King{ 2741039a08981a49e05f09db969cdd3f38f05a5df46fBrian King struct ibmvfc_host *vhost = data; 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the CRQ */ 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_enable_interrupts(vdev); 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 27704081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 27977d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if step will be retried / 0 if not 27987d0e462247241b8ec2d377306203b58c7f423553Brian King * 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 28007d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 28031c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 28067d0e462247241b8ec2d377306203b58c7f423553Brian King return 0; 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 28097d0e462247241b8ec2d377306203b58c7f423553Brian King return 1; 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2812a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/* Defined in FC-LS */ 2813a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic const struct { 2814a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code; 2815a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int retry; 2816a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int logged_in; 2817a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} prli_rsp [] = { 2818a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 0, 1, 0 }, 2819a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 1, 0, 1 }, 2820a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 2, 1, 0 }, 2821a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 3, 1, 0 }, 2822a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 4, 0, 0 }, 2823a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 5, 0, 0 }, 2824a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 6, 0, 1 }, 2825a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 7, 0, 0 }, 2826a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 8, 1, 0 }, 2827a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King}; 2828a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2829a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/** 2830a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * ibmvfc_get_prli_rsp - Find PRLI response index 2831a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * @flags: PRLI response flags 2832a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * 2833a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King **/ 2834a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic int ibmvfc_get_prli_rsp(u16 flags) 2835a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King{ 2836a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int i; 2837a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code = (flags & 0x0f00) >> 8; 2838a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2839a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King for (i = 0; i < ARRAY_SIZE(prli_rsp); i++) 2840a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[i].code == code) 2841a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return i; 2842a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2843a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return 0; 2844a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} 2845a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 2856a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King struct ibmvfc_prli_svc_parms *parms = &rsp->parms; 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 28587d0e462247241b8ec2d377306203b58c7f423553Brian King int index, level = IBMVFC_DEFAULT_LOG_LEVEL; 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2864a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n", 2865a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King parms->type, parms->flags, parms->service_parms); 2866a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2867a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->type == IBMVFC_SCSI_FCP_TYPE) { 2868a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King index = ibmvfc_get_prli_rsp(parms->flags); 2869a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[index].logged_in) { 2870a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) { 2871a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->need_login = 0; 2872a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles = 0; 2873a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC) 2874a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET; 2875a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC) 2876a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 287743c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 1; 2878a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 2879a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2880a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else if (prli_rsp[index].retry) 2881a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2882a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King else 2883a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2884a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 2885a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 28957d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 289610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 289710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 28987d0e462247241b8ec2d377306203b58c7f423553Brian King 28997d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 29007d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 29017d0e462247241b8ec2d377306203b58c7f423553Brian King rsp->status, rsp->error, status); 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 29607d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 29907d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 299110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 299210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 29937d0e462247241b8ec2d377306203b58c7f423553Brian King 29947d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 29957d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 29967d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 29977d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 3030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 3031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 3032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 3051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 3060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 3068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 3072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 3073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 3082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 3086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 3088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 3098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 3100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3116989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3117989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3118989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3119989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3120989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3121989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3122989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3123989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3124989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3125989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3126989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3127989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3128989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3129989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3130989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3131989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3132989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3133989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3134989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3135989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3136989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3137989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3138989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3139989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3140989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3141989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3142989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3143989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3144989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3145989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3146989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3147989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3148989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3149989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3150989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3151989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 315210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3153989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3154989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3155989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3156989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3157989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 31585e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3159989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3160989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3161989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3162989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3163989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 31645e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3165989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3166989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3167989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3168989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3169989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3170989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3171989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3172989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3173989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3174989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3175989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3176989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3177989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3178989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3179989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3180989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3181989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3182989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3183989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3184989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3185989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3186989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3187989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3188989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3189989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3190989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3191989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3192989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3193989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3194989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3195989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3196989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3197989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3198989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3199989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3200989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3201989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3202989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3203989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3204989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3205989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3206989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3207989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3208989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 320910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC 321010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @evt: ibmvfc event struct 321110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 321210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * Just cleanup this event struct. Everything else is handled by 321310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * the ADISC completion handler. If the ADISC never actually comes 321410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * back, we still have the timer running on the ADISC event struct 321510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * which will fire and cause the CRQ to get reset. 321610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 321710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 321810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt) 321910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 322010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = evt->vhost; 322110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_target *tgt = evt->tgt; 322210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 322310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC cancel complete\n"); 322410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 322510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_free_event(evt); 322610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 322710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King wake_up(&vhost->work_wait_q); 322810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 322910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 323010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 323110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_adisc_timeout - Handle an ADISC timeout 323210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @tgt: ibmvfc target struct 323310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 323410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * If an ADISC times out, send a cancel. If the cancel times 323510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * out, reset the CRQ. When the ADISC comes back as cancelled, 323610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * log back into the target. 323710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 323810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt) 323910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 324010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = tgt->vhost; 324110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_event *evt; 324210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_tmf *tmf; 324310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King unsigned long flags; 324410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King int rc; 324510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 324610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC timeout\n"); 324710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 324810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (vhost->abort_threads >= disc_threads || 324910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT || 325010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->state != IBMVFC_INITIALIZING || 325110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) { 325210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 325310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King return; 325410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 325510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 325610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads++; 325710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_get(&tgt->kref); 325810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt = ibmvfc_get_event(vhost); 325910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT); 326010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 326110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt->tgt = tgt; 326210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf = &evt->iu.tmf; 326310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King memset(tmf, 0, sizeof(*tmf)); 326410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.version = 1; 326510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.opcode = IBMVFC_TMF_MAD; 326610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.length = sizeof(*tmf); 326710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->scsi_id = tgt->scsi_id; 326810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->cancel_key = tgt->cancel_key; 326910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 327010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 327110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 327210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (rc) { 327310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc); 327410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 327510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 327610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King __ibmvfc_reset_host(vhost); 327710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } else 327810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "Attempting to cancel ADISC\n"); 327910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 328010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 328110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 328210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 3283989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3284989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3285989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 328610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * When sending an ADISC we end up with two timers running. The 328710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * first timer is the timer in the ibmvfc target struct. If this 328810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, we send a cancel to the target. The second timer is the 328910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * timer on the ibmvfc event for the ADISC, which is longer. If that 329010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, it means the ADISC timed out and our attempt to cancel it 329110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * also failed, so we need to reset the CRQ. 3292989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3293989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3294989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3295989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3296989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3297989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3298989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3299989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3300989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3301989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3302989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3303989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3304989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3305989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3306989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3307989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3308989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3309989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3310989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3311989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 331210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mad->iu.cancel_key = tgt->cancel_key; 3313989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3314989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3315989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3316989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3317989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3318989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3319989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3320989b854579875b38d45fffa7f8c89177f7698cd3Brian King 332110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (timer_pending(&tgt->timer)) 332210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ)); 332310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King else { 332410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.data = (unsigned long) tgt; 332510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ); 332610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout; 332710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King add_timer(&tgt->timer); 332810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 332910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 3330989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 333110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) { 3332989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 333310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3334989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3335989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3336989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3337989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3338989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3339989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3340989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 33517d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3361989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3362989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 33767d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 337710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 337810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 33797d0e462247241b8ec2d377306203b58c7f423553Brian King 33807d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 33817d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 33827d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 33837d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 34507270b9bde5f382e730e1ef69d6c1b34d388df2b0Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO); 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3452775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n", 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 34570883e3b3a85b5860b7729f1279a52e95b87dea97Brian King memset(tgt, 0, sizeof(*tgt)); 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 346210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->cancel_key = vhost->task_set++; 346310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King init_timer(&tgt->timer); 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 35027d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 35117d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 35127d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n", 35137d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 35657d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 35737d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 3574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 35767d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n", 35777d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 361079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 1; 3611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 366979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout 367079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 367179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 367279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 367379111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt) 367479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 367579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_host *vhost = evt->vhost; 367679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King u32 mad_status = evt->xfer_iu->npiv_logout.common.status; 367779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 367879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_free_event(evt); 367979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 368079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King switch (mad_status) { 368179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_SUCCESS: 368279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (list_empty(&vhost->sent) && 368379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) { 368479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_host(vhost, 0); 368579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King return; 368679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 368779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 368879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_FAILED: 368979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_NOT_SUPPORTED: 369079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_CRQ_ERROR: 369179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_DRIVER_FAILED: 369279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King default: 369379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status); 369479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 369579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 369679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 369779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 369879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 369979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 370079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 370179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout - Issue an NPIV Logout 370279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 370379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 370479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 370579111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *vhost) 370679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 370779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_npiv_logout_mad *mad; 370879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_event *evt; 370979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 371079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King evt = ibmvfc_get_event(vhost); 371179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT); 371279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 371379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad = &evt->iu.npiv_logout; 371479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King memset(mad, 0, sizeof(*mad)); 371579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.version = 1; 371679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.opcode = IBMVFC_NPIV_LOGOUT; 371779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad); 371879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 371979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT); 372079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 372179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 372279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "Sent NPIV logout\n"); 372379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King else 372479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 372579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 372679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 372779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 376379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 377679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 378010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 383343c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 383643c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Adding rport\n"); 383743c8da907ccc656935d1085701f4db83385d8a59Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 383843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 383943c8da907ccc656935d1085701f4db83385d8a59Brian King 384043c8da907ccc656935d1085701f4db83385d8a59Brian King if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 384143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Deleting rport\n"); 384243c8da907ccc656935d1085701f4db83385d8a59Brian King list_del(&tgt->queue); 38430883e3b3a85b5860b7729f1279a52e95b87dea97Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 384443c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_delete(rport); 384543c8da907ccc656935d1085701f4db83385d8a59Brian King del_timer_sync(&tgt->timer); 384643c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 38470883e3b3a85b5860b7729f1279a52e95b87dea97Brian King return; 38480883e3b3a85b5860b7729f1279a52e95b87dea97Brian King } 38490883e3b3a85b5860b7729f1279a52e95b87dea97Brian King 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 385243c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->rport = rport; 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 385552d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 388379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 388679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 388779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step(vhost); 388879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 38911c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 38921c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 38931c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3894d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King ssleep(15); 38951c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 38961c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 38971c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 3914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 391610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 392610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer_sync(&tgt->timer); 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 393310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 393443c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->reinit) { 393543c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->reinit = 0; 393643c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_block_requests(vhost->host); 393743c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 393843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 393943c8da907ccc656935d1085701f4db83385d8a59Brian King } else { 394043c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 394143c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 394243c8da907ccc656935d1085701f4db83385d8a59Brian King wake_up(&vhost->init_wait_q); 394343c8da907ccc656935d1085701f4db83385d8a59Brian King schedule_work(&vhost->rport_add_work_q); 394443c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->init_retries = 0; 394543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 394643c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_unblock_requests(vhost->host); 394743c8da907ccc656935d1085701f4db83385d8a59Brian King } 394843c8da907ccc656935d1085701f4db83385d8a59Brian King 394910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 395010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 395110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 395210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 395310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 397610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 397710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 3999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 4001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 4002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 4003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 4005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 4010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 4013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 4018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 4021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 4022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 4025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 4027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 4029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 4031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 4032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 4035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 4037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 4040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 4041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 4042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 40438d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 4044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 4045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 4047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 4048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 4050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 4051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 4052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 4054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 4055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 4056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 4057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4062039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost); 4063039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 4064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 4075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 4079039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 4080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 4081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 4082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 4083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 4084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 4085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 4086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 4096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 4110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 4117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 41398d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 4166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 4167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 4168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 4171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 4172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 4174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 4175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 4177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 4178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 4180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 4181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 4182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 4188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 4190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 4191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 4193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 4194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 4196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 4198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 4199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 4201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 4203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 420843c8da907ccc656935d1085701f4db83385d8a59Brian King * ibmvfc_rport_add_thread - Worker thread for rport adds 420943c8da907ccc656935d1085701f4db83385d8a59Brian King * @work: work struct 421043c8da907ccc656935d1085701f4db83385d8a59Brian King * 421143c8da907ccc656935d1085701f4db83385d8a59Brian King **/ 421243c8da907ccc656935d1085701f4db83385d8a59Brian Kingstatic void ibmvfc_rport_add_thread(struct work_struct *work) 421343c8da907ccc656935d1085701f4db83385d8a59Brian King{ 421443c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host, 421543c8da907ccc656935d1085701f4db83385d8a59Brian King rport_add_work_q); 421643c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_target *tgt; 421743c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 421843c8da907ccc656935d1085701f4db83385d8a59Brian King unsigned long flags; 421943c8da907ccc656935d1085701f4db83385d8a59Brian King int did_work; 422043c8da907ccc656935d1085701f4db83385d8a59Brian King 422143c8da907ccc656935d1085701f4db83385d8a59Brian King ENTER; 422243c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 422343c8da907ccc656935d1085701f4db83385d8a59Brian King do { 422443c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 0; 422543c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state != IBMVFC_ACTIVE) 422643c8da907ccc656935d1085701f4db83385d8a59Brian King break; 422743c8da907ccc656935d1085701f4db83385d8a59Brian King 422843c8da907ccc656935d1085701f4db83385d8a59Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 422943c8da907ccc656935d1085701f4db83385d8a59Brian King if (tgt->add_rport) { 423043c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 1; 423143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 423243c8da907ccc656935d1085701f4db83385d8a59Brian King kref_get(&tgt->kref); 423343c8da907ccc656935d1085701f4db83385d8a59Brian King rport = tgt->rport; 423443c8da907ccc656935d1085701f4db83385d8a59Brian King if (!rport) { 423543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 423643c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_tgt_add_rport(tgt); 423743c8da907ccc656935d1085701f4db83385d8a59Brian King } else if (get_device(&rport->dev)) { 423843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 423943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Setting rport roles\n"); 424043c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_rolechg(rport, tgt->ids.roles); 424143c8da907ccc656935d1085701f4db83385d8a59Brian King put_device(&rport->dev); 424243c8da907ccc656935d1085701f4db83385d8a59Brian King } 424343c8da907ccc656935d1085701f4db83385d8a59Brian King 424443c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 424543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 424643c8da907ccc656935d1085701f4db83385d8a59Brian King break; 424743c8da907ccc656935d1085701f4db83385d8a59Brian King } 424843c8da907ccc656935d1085701f4db83385d8a59Brian King } 424943c8da907ccc656935d1085701f4db83385d8a59Brian King } while(did_work); 425043c8da907ccc656935d1085701f4db83385d8a59Brian King 425143c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state == IBMVFC_ACTIVE) 425243c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->scan_complete = 1; 425343c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 425443c8da907ccc656935d1085701f4db83385d8a59Brian King LEAVE; 425543c8da907ccc656935d1085701f4db83385d8a59Brian King} 425643c8da907ccc656935d1085701f4db83385d8a59Brian King 425743c8da907ccc656935d1085701f4db83385d8a59Brian King/** 4258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 4259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 4261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 4266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 4268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 4269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 4270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 4271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 4274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 4275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 4276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 4277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 4280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 4281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 4282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 4283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 4284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 4285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 4286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 4288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 4289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 4290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 4291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 4292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 4293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 4294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 4295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 429610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->task_set = 1; 4297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 4298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 4299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 430043c8da907ccc656935d1085701f4db83385d8a59Brian King INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread); 4301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 4303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 4304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 4306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 4307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 4309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 4310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 4311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 4312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 4315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 4316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 4317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 4320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 4321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 43732d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 43742d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 43752d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 439439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 439539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 439639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 439739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 439839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 439939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 440039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 440139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 440239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 440339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 440439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 440539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 440639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 440739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 441839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 44329ab3610f9c24e7f303f1b0e6bb88a5f804ab847eBrian King .show_host_maxframe_size = 1, 4433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4499