ibmvfc.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05
1072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/* 2072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc.c -- driver for IBM Power Virtual Fibre Channel Adapter 3072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 5072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 6072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Copyright (C) IBM Corporation, 2008 7072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is free software; you can redistribute it and/or modify 9072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * it under the terms of the GNU General Public License as published by 10072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the Free Software Foundation; either version 2 of the License, or 11072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * (at your option) any later version. 12072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 13072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is distributed in the hope that it will be useful, 14072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * but WITHOUT ANY WARRANTY; without even the implied warranty of 15072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * GNU General Public License for more details. 17072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 18072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * You should have received a copy of the GNU General Public License 19072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * along with this program; if not, write to the Free Software 20072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 22072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 23072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 24072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/module.h> 25072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/moduleparam.h> 26072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dma-mapping.h> 27072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dmapool.h> 28072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/delay.h> 29072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/interrupt.h> 30072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/kthread.h> 315a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 32072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/of.h> 33b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King#include <linux/pm.h> 34072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/stringify.h> 35072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/firmware.h> 36072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/irq.h> 37072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/vio.h> 38072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi.h> 39072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_cmnd.h> 40072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_host.h> 41072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_device.h> 42072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_tcq.h> 43072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_transport_fc.h> 44d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King#include <scsi/scsi_bsg_fc.h> 45072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include "ibmvfc.h" 46072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 47072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int init_timeout = IBMVFC_INIT_TIMEOUT; 48072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int default_timeout = IBMVFC_DEFAULT_TIMEOUT; 49072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_lun = IBMVFC_MAX_LUN; 50072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_targets = IBMVFC_MAX_TARGETS; 51072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT; 52072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS; 53072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int dev_loss_tmo = IBMVFC_DEV_LOSS_TMO; 54072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int ibmvfc_debug = IBMVFC_DEBUG; 55072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL; 56072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic LIST_HEAD(ibmvfc_head); 57072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic DEFINE_SPINLOCK(ibmvfc_driver_lock); 58072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_transport_template *ibmvfc_transport_template; 59072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 60072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DESCRIPTION("IBM Virtual Fibre Channel Driver"); 61072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>"); 62072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_LICENSE("GPL"); 63072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_VERSION(IBMVFC_DRIVER_VERSION); 64072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 65072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(init_timeout, init_timeout, uint, S_IRUGO | S_IWUSR); 66072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds. " 67072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_INIT_TIMEOUT) "]"); 68072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(default_timeout, default_timeout, uint, S_IRUGO | S_IWUSR); 69072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(default_timeout, 70072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Default timeout in seconds for initialization and EH commands. " 71072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_TIMEOUT) "]"); 72072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_requests, max_requests, uint, S_IRUGO); 73072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_requests, "Maximum requests for this adapter. " 74072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_REQUESTS_DEFAULT) "]"); 75072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_lun, max_lun, uint, S_IRUGO); 76072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_lun, "Maximum allowed LUN. " 77072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_LUN) "]"); 78072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_targets, max_targets, uint, S_IRUGO); 79072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_targets, "Maximum allowed targets. " 80072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_TARGETS) "]"); 81545ef9a2dc1e5ac0463f3754e239ffcc5aaa92e2Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO); 82072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. " 83072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]"); 84072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR); 85072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(debug, "Enable driver debug information. " 86072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEBUG) "]"); 87072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(dev_loss_tmo, dev_loss_tmo, uint, S_IRUGO | S_IWUSR); 88072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC " 89072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "transport should insulate the loss of a remote port. Once this " 90072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "value is exceeded, the scsi target is removed. " 91072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEV_LOSS_TMO) "]"); 92072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(log_level, log_level, uint, 0); 93072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. " 94072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]"); 95072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 96072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 97072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 98072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 error; 99072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 result; 100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 retry; 101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int log; 102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} cmd_status [] = { 104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" }, 105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" }, 106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" }, 107752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 1, 1, "network down" }, 108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" }, 109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" }, 110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" }, 111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_REGISTER, DID_ERROR, 1, 1, "unable to register" }, 112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_BUSY, DID_BUS_BUSY, 1, 0, "transport busy" }, 113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" }, 114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" }, 115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" }, 116497f9c504f76e7a751cd370604e1c8521743746dBrian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" }, 117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" }, 118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" }, 120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" }, 121752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" }, 122752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" }, 123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 124752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" }, 125752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 127646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 14979111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *); 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 2824a2837d4fcaf8a2c2ad61523287073d0c14b9ed0Brian King ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 43843c8da907ccc656935d1085701f4db83385d8a59Brian King if (action == IBMVFC_TGT_ACTION_DEL_RPORT) 43943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 48479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 48579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->action == IBMVFC_HOST_ACTION_LOGO) 48679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action = action; 48779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 49643c8da907ccc656935d1085701f4db83385d8a59Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 50779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 51110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5292d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5302d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5312d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5322d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 568861890c62d46bd29c73d75fc907aeffd1c4eee06Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost) 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5731c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 582861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 583861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King vhost->async_crq.cur = 0; 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/** 14886d29cc56bead73b6f386cf43333708579deb5eedBrian King * ibmvfc_relogin - Log back into the specified device 14896d29cc56bead73b6f386cf43333708579deb5eedBrian King * @sdev: scsi device struct 14906d29cc56bead73b6f386cf43333708579deb5eedBrian King * 14916d29cc56bead73b6f386cf43333708579deb5eedBrian King **/ 14926d29cc56bead73b6f386cf43333708579deb5eedBrian Kingstatic void ibmvfc_relogin(struct scsi_device *sdev) 14936d29cc56bead73b6f386cf43333708579deb5eedBrian King{ 14946d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 14956d29cc56bead73b6f386cf43333708579deb5eedBrian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 14966d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 14976d29cc56bead73b6f386cf43333708579deb5eedBrian King 14986d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 14996d29cc56bead73b6f386cf43333708579deb5eedBrian King if (rport == tgt->rport) { 15006d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 15016d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 15026d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15036d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15046d29cc56bead73b6f386cf43333708579deb5eedBrian King 15056d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 15066d29cc56bead73b6f386cf43333708579deb5eedBrian King} 15076d29cc56bead73b6f386cf43333708579deb5eedBrian King 15086d29cc56bead73b6f386cf43333708579deb5eedBrian King/** 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 15192bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 15202bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 15372bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1539646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 15406d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_relogin(cmnd->device); 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 154250119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 154350119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 154450119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1556ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1557ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1558ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1681d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout_done - Completion handler for cancelling BSG commands 1682d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @evt: struct ibmvfc_event 1683d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1684d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1685d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic void ibmvfc_bsg_timeout_done(struct ibmvfc_event *evt) 1686d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1687d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = evt->vhost; 1688d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1689d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1690d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1691d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Passthru command cancelled\n"); 1692d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1693d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1694d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1695d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout - Handle a BSG timeout 1696d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job that timed out 1697d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1698d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1699d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1700d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1701d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_timeout(struct fc_bsg_job *job) 1702d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1703d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1704d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long port_id = (unsigned long)job->dd_data; 1705d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1706d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_tmf *tmf; 1707d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1708d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc; 1709d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1710d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1711d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1712d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (vhost->aborting_passthru || vhost->state != IBMVFC_ACTIVE) { 1713d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King __ibmvfc_reset_host(vhost); 1714d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1715d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return 0; 1716d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1717d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1718d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 1; 1719d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1720d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_bsg_timeout_done, IBMVFC_MAD_FORMAT); 1721d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1722d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf = &evt->iu.tmf; 1723d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(tmf, 0, sizeof(*tmf)); 1724d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.version = 1; 1725d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1726d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.length = sizeof(*tmf); 1727d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->scsi_id = port_id; 1728d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1729d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->my_cancel_key = IBMVFC_INTERNAL_CANCEL_KEY; 1730d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1731d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1732d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc != 0) { 1733d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1734d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_err(vhost->dev, "Failed to send cancel event. rc=%d\n", rc); 1735d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1736d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } else 1737d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Cancelling passthru command to port id 0x%lx\n", 1738d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id); 1739d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1740d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1741d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1742d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1743d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1744d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1745d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1746d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1747d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_plogi - PLOGI into a target to handle a BSG command 1748d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @vhost: struct ibmvfc_host to send command 1749d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @port_id: port ID to send command 1750d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1751d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1752d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1753d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1754d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id) 1755d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1756d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_port_login *plogi; 1757d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_target *tgt; 1758d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1759d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1760d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1761d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, issue_login = 1; 1762d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1763d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1764d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1765d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 1766d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (tgt->scsi_id == port_id) { 1767d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 0; 1768d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1769d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1770d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1771d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1772d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!issue_login) 1773d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1774d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely((rc = ibmvfc_host_chkready(vhost)))) 1775d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1776d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1777d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1778d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1779d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi = &evt->iu.plogi; 1780d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(plogi, 0, sizeof(*plogi)); 1781d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.version = 1; 1782d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 1783d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.length = sizeof(*plogi); 1784d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->scsi_id = port_id; 1785d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1786d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1787d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1788d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1789d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1790d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1791d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) 1792d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EIO; 1793d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1794d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1795d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1796d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.plogi.common.status) 1797d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1798d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1799d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1800d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1801d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingunlock_out: 1802d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1803d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1804d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1805d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1806d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1807d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1808d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_request - Handle a BSG request 1809d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job to be executed 1810d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1811d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1812d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1813d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1814d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_request(struct fc_bsg_job *job) 1815d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1816d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1817d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct fc_rport *rport = job->rport; 1818d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_passthru_mad *mad; 1819d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1820d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1821d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags, port_id = -1; 1822d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned int code = job->request->msgcode; 1823d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, req_seg, rsp_seg, issue_login = 0; 1824d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King u32 fc_flags, rsp_len; 1825d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1826d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1827d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = 0; 1828d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport) 1829d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = rport->port_id; 1830d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1831d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King switch (code) { 1832d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_ELS_NOLOGIN: 1833d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_els.port_id[0] << 16) | 1834d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_els.port_id[1] << 8) | 1835d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_els.port_id[2]; 1836d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_ELS: 1837d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_ELS; 1838d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1839d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_CT: 1840d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 1; 1841d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_ct.port_id[0] << 16) | 1842d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_ct.port_id[1] << 8) | 1843d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_ct.port_id[2]; 1844d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_CT: 1845d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_CT_IU; 1846d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1847d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King default: 1848d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOTSUPP; 1849d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King }; 1850d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1851d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (port_id == -1) 1852d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EINVAL; 1853d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!mutex_trylock(&vhost->passthru_mutex)) 1854d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EBUSY; 1855d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1856d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->dd_data = (void *)port_id; 1857d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King req_seg = dma_map_sg(vhost->dev, job->request_payload.sg_list, 1858d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1859d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1860d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!req_seg) { 1861d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1862d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1863d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1864d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1865d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_seg = dma_map_sg(vhost->dev, job->reply_payload.sg_list, 1866d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1867d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1868d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!rsp_seg) { 1869d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1870d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1871d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1872d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1873d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1874d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1875d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (req_seg > 1 || rsp_seg > 1) { 1876d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EINVAL; 1877d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1878d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1879d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1880d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (issue_login) 1881d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_bsg_plogi(vhost, port_id); 1882d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1883d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1884d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1885d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely(rc || (rport && (rc = fc_remote_port_chkready(rport)))) || 1886d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1887d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1888d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1889d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1890d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1891d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1892d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1893d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad = &evt->iu.passthru; 1894d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1895d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(mad, 0, sizeof(*mad)); 1896d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.version = 1; 1897d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.opcode = IBMVFC_PASSTHRU; 1898d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 1899d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1900d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 1901d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King offsetof(struct ibmvfc_passthru_mad, iu); 1902d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.len = sizeof(mad->iu); 1903d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1904d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd_len = job->request_payload.payload_len; 1905d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp_len = job->reply_payload.payload_len; 1906d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.flags = fc_flags; 1907d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1908d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1909d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.va = sg_dma_address(job->request_payload.sg_list); 1910d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.len = sg_dma_len(job->request_payload.sg_list); 1911d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.va = sg_dma_address(job->reply_payload.sg_list); 1912d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.len = sg_dma_len(job->reply_payload.sg_list); 1913d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.scsi_id = port_id; 1914d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.tag = (u64)evt; 1915d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_len = mad->iu.rsp.len; 1916d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1917d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1918d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1919d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, 0); 1920d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1921d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1922d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) { 1923d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1924d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1925d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1926d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1927d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1928d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1929d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.passthru.common.status) 1930d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1931d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King else 1932d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = rsp_len; 1933d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1934d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1935d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1936d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1937d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->result = rc; 1938d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->job_done(job); 1939d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = 0; 1940d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingout: 1941d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1942d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1943d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->reply_payload.sg_list, 1944d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1945d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1946d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1947d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1948d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1949d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1950d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 196450ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 2002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2004230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 2005230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2006230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2007230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 2050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 2075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 2077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 2079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 2094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2096230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 2097230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2098230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2099230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 2130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2132ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2133ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2171ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2203ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 2204ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 2205ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 2206ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2207ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2208ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 2209ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2210ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 2211ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2212ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 2213ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 2214ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2215ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2216ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2217ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2218ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 2219ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 2220ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 2221ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2222ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2223ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 2224ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2225ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 2226ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2227ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 2228ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 2229ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2230ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2231ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2232ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2233ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 2234ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 2235ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 2236ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 2237ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2238ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2239ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 2240ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2241ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 2242ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 2243ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2244ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 2245ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 2246ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 2247ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 2248ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 2249ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2250ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 2251ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 2252ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 2253ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2254ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 2255ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 2256ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 2257ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 2258ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2259ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2260ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2261ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2262ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 2263ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 2264ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2265ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 2266ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 2267ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2268ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 2269ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 2270ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 2271ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 2272ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2273ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2274ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2275ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 2276ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 2277ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2278ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 2279ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2280ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2281ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 2282ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2283ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2284ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 2285ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2286ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2287ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2296ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2297ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 2299ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2303ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2304ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2306ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2307ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2310ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 2315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 2321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2322ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2323ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 2325ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2329ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 2330ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 2331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2332ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2333ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2336ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 23404a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_abts - Device iterated cancel all function 2341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 23454a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_abts(struct scsi_device *sdev, void *data) 23464a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King{ 23474a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King unsigned long *rc = data; 23484a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 23494a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King} 23504a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King 23514a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King/** 23524a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function 23534a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @sdev: scsi device struct 23544a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @data: return code 23554a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * 23564a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King **/ 23574a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2384ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2385ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2386ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2388ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 23934a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset); 2394ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2396ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2397ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2400ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2432ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 24354a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_abts); 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2438ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2439ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2440ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2441ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 24936d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2495775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx," 2496775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2500497f9c504f76e7a751cd370604e1c8521743746dBrian King switch (crq->link_state) { 2501497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DOWN: 2502497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2503497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2504497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DEAD: 2505497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2506497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2507497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_UP: 2508497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_BOUNCED: 2509497f9c504f76e7a751cd370604e1c8521743746dBrian King default: 2510497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2511497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->delay_init = 1; 2512497f9c504f76e7a751cd370604e1c8521743746dBrian King __ibmvfc_reset_host(vhost); 2513497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2514497f9c504f76e7a751cd370604e1c8521743746dBrian King }; 2515497f9c504f76e7a751cd370604e1c8521743746dBrian King 2516497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2517497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LINK_UP: 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2519d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2520d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2523d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King case IBMVFC_AE_SCN_DOMAIN: 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2525d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2526d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 25316d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 25326d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 25366d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 25376d29cc56bead73b6f386cf43333708579deb5eedBrian King if (!crq->scsi_id && !crq->wwpn && !crq->node_name) 25386d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 25396d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->scsi_id && tgt->scsi_id != crq->scsi_id) 25406d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 25416d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->wwpn && tgt->ids.port_name != crq->wwpn) 25426d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 25436d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->node_name && tgt->ids.node_name != crq->node_name) 25446d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 2545017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (tgt->need_login && crq->event == IBMVFC_AE_ELS_LOGO) 2546017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 1; 2547017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (!tgt->need_login || crq->event == IBMVFC_AE_ELS_PLOGI) { 2548017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2549017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_reinit_host(vhost); 2550017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King } 25516d29cc56bead73b6f386cf43333708579deb5eedBrian King } 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2564775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event); 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2588861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2594861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 260279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2642775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2648775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 268043c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->scan_complete) 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2713ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2714ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2715ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2716ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2717ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2718ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2719ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2720ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2721ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2722ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2723ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2724ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2725ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2726ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2727ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2728ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2729ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2730ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2731ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2732ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2733ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2734ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2769e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie * @reason: calling context 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2774e881a172dac4d9ea3b2a1540041d872963c269bdMike Christiestatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth, 2775e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie int reason) 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2777e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie if (reason != SCSI_QDEPTH_DEFAULT) 2778e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie return -EOPNOTSUPP; 2779e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2858497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic ssize_t ibmvfc_show_host_capabilities(struct device *dev, 2859497f9c504f76e7a751cd370604e1c8521743746dBrian King struct device_attribute *attr, char *buf) 2860497f9c504f76e7a751cd370604e1c8521743746dBrian King{ 2861497f9c504f76e7a751cd370604e1c8521743746dBrian King struct Scsi_Host *shost = class_to_shost(dev); 2862497f9c504f76e7a751cd370604e1c8521743746dBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2863497f9c504f76e7a751cd370604e1c8521743746dBrian King return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities); 2864497f9c504f76e7a751cd370604e1c8521743746dBrian King} 2865497f9c504f76e7a751cd370604e1c8521743746dBrian King 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 291085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL); 291185e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL); 291285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL); 291385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL); 291485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL); 2915497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL); 291685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR, 291785e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King ibmvfc_show_log_level, ibmvfc_store_log_level); 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 296685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_partition_name, 296785e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_device_name, 296885e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_port_loc_code, 296985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_drc_name, 297085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_npiv_version, 2971497f9c504f76e7a751cd370604e1c8521743746dBrian King &dev_attr_capabilities, 297285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_log_level, 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2987ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 3030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 3032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 3035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 3048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 3051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 3053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 3055039a08981a49e05f09db969cdd3f38f05a5df46fBrian King unsigned long flags; 3056039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3057039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 3058039a08981a49e05f09db969cdd3f38f05a5df46fBrian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 3059039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_schedule(&vhost->tasklet); 3060039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3061039a08981a49e05f09db969cdd3f38f05a5df46fBrian King return IRQ_HANDLED; 3062039a08981a49e05f09db969cdd3f38f05a5df46fBrian King} 3063039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3064039a08981a49e05f09db969cdd3f38f05a5df46fBrian King/** 3065039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * ibmvfc_tasklet - Interrupt handler tasklet 3066039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * @data: ibmvfc host struct 3067039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * 3068039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Returns: 3069039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Nothing 3070039a08981a49e05f09db969cdd3f38f05a5df46fBrian King **/ 3071039a08981a49e05f09db969cdd3f38f05a5df46fBrian Kingstatic void ibmvfc_tasklet(void *data) 3072039a08981a49e05f09db969cdd3f38f05a5df46fBrian King{ 3073039a08981a49e05f09db969cdd3f38f05a5df46fBrian King struct ibmvfc_host *vhost = data; 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 3079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 3082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 3085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 3086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3088f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King /* Pull all the valid messages off the CRQ */ 3089f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 3091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 3092f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } 3093f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King 3094f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_enable_interrupts(vdev); 3095f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 30984081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 3099f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3100f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_disable_interrupts(vdev); 3101f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King ibmvfc_handle_crq(crq, vhost); 3102f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King crq->valid = 0; 3103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 3117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 3120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 3121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 3122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 3126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 3128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 31297d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if step will be retried / 0 if not 31307d0e462247241b8ec2d377306203b58c7f423553Brian King * 3131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 31327d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 3133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 31351c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 3136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 31387d0e462247241b8ec2d377306203b58c7f423553Brian King return 0; 3139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 31417d0e462247241b8ec2d377306203b58c7f423553Brian King return 1; 3142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3144a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/* Defined in FC-LS */ 3145a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic const struct { 3146a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code; 3147a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int retry; 3148a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int logged_in; 3149a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} prli_rsp [] = { 3150a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 0, 1, 0 }, 3151a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 1, 0, 1 }, 3152a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 2, 1, 0 }, 3153a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 3, 1, 0 }, 3154a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 4, 0, 0 }, 3155a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 5, 0, 0 }, 3156a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 6, 0, 1 }, 3157a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 7, 0, 0 }, 3158a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 8, 1, 0 }, 3159a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King}; 3160a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3161a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/** 3162a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * ibmvfc_get_prli_rsp - Find PRLI response index 3163a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * @flags: PRLI response flags 3164a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * 3165a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King **/ 3166a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic int ibmvfc_get_prli_rsp(u16 flags) 3167a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King{ 3168a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int i; 3169a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code = (flags & 0x0f00) >> 8; 3170a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3171a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King for (i = 0; i < ARRAY_SIZE(prli_rsp); i++) 3172a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[i].code == code) 3173a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return i; 3174a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3175a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return 0; 3176a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} 3177a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 3184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 3188a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King struct ibmvfc_prli_svc_parms *parms = &rsp->parms; 3189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 31907d0e462247241b8ec2d377306203b58c7f423553Brian King int index, level = IBMVFC_DEFAULT_LOG_LEVEL; 3191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3196a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n", 3197a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King parms->type, parms->flags, parms->service_parms); 3198a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3199a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->type == IBMVFC_SCSI_FCP_TYPE) { 3200a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King index = ibmvfc_get_prli_rsp(parms->flags); 3201a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[index].logged_in) { 3202a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) { 3203a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->need_login = 0; 3204a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles = 0; 3205a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC) 3206a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET; 3207a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC) 3208a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 320943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 1; 3210a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3211a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3212a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else if (prli_rsp[index].retry) 3213a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3214a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King else 3215a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3216a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3217a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3226017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if ((rsp->status & IBMVFC_VIOS_FAILURE) && rsp->error == IBMVFC_PLOGI_REQUIRED) 3227017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3228017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (tgt->logo_rcvd) 3229017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3230017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 32317d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 323210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 323310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 32347d0e462247241b8ec2d377306203b58c7f423553Brian King 32357d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 32367d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 32377d0e462247241b8ec2d377306203b58c7f423553Brian King rsp->status, rsp->error, status); 3238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 3266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 3267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 3268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 3269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 3270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 3271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 3273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 3274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 3275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 3283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 3287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 32967d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 3303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 3304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 3305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 3306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 3307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 33267d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 332710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 332810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 33297d0e462247241b8ec2d377306203b58c7f423553Brian King 33307d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 33317d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 33327d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 33337d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3357017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 0; 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3453989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3454989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3455989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3456989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3457989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3458989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3459989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3460989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3461989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3462989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3463989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3464989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3465989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3466989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3467989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3468989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3469989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3470989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3471989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3472989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3473989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3474989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3475989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3476989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3477989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3478989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3479989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3480989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3481989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3482989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3483989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3484989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3485989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3486989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3487989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3488989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 348910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3490989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3491989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3492989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3493989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3494989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 34955e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3496989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3497989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3498989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3499989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3500989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 35015e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3502989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3503989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3504989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3505989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3506989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3507989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3508989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3509989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3510989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3511989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3512989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3513989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3514989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3515989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3516989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3517989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3518989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3519989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3520989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3521989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3522989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3523989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3524989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3525989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3526989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3527989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3528989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3529989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3530989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3531989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3532989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3533989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3534989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3535989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3536989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3537989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3538989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3539989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3540989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3541989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3542989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3543989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3544989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3545989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 354610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC 354710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @evt: ibmvfc event struct 354810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 354910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * Just cleanup this event struct. Everything else is handled by 355010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * the ADISC completion handler. If the ADISC never actually comes 355110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * back, we still have the timer running on the ADISC event struct 355210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * which will fire and cause the CRQ to get reset. 355310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 355410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 355510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt) 355610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 355710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = evt->vhost; 355810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_target *tgt = evt->tgt; 355910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 356010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC cancel complete\n"); 356110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 356210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_free_event(evt); 356310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 356410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King wake_up(&vhost->work_wait_q); 356510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 356610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 356710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 356810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_adisc_timeout - Handle an ADISC timeout 356910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @tgt: ibmvfc target struct 357010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 357110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * If an ADISC times out, send a cancel. If the cancel times 357210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * out, reset the CRQ. When the ADISC comes back as cancelled, 357310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * log back into the target. 357410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 357510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt) 357610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 357710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = tgt->vhost; 357810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_event *evt; 357910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_tmf *tmf; 358010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King unsigned long flags; 358110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King int rc; 358210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 358310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC timeout\n"); 358410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 358510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (vhost->abort_threads >= disc_threads || 358610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT || 358710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->state != IBMVFC_INITIALIZING || 358810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) { 358910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 359010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King return; 359110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 359210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 359310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads++; 359410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_get(&tgt->kref); 359510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt = ibmvfc_get_event(vhost); 359610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT); 359710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 359810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt->tgt = tgt; 359910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf = &evt->iu.tmf; 360010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King memset(tmf, 0, sizeof(*tmf)); 360110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.version = 1; 360210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.opcode = IBMVFC_TMF_MAD; 360310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.length = sizeof(*tmf); 360410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->scsi_id = tgt->scsi_id; 360510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->cancel_key = tgt->cancel_key; 360610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 360710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 360810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 360910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (rc) { 361010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc); 361110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 361210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 361310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King __ibmvfc_reset_host(vhost); 361410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } else 361510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "Attempting to cancel ADISC\n"); 361610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 361710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 361810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 361910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 3620989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3621989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3622989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 362310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * When sending an ADISC we end up with two timers running. The 362410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * first timer is the timer in the ibmvfc target struct. If this 362510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, we send a cancel to the target. The second timer is the 362610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * timer on the ibmvfc event for the ADISC, which is longer. If that 362710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, it means the ADISC timed out and our attempt to cancel it 362810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * also failed, so we need to reset the CRQ. 3629989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3630989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3631989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3632989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3633989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3634989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3635989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3636989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3637989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3638989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3639989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3640989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3641989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3642989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3643989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3644989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3645989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3646989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3647989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3648989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 364910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mad->iu.cancel_key = tgt->cancel_key; 3650989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3651989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3652989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3653989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3654989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3655989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3656989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3657989b854579875b38d45fffa7f8c89177f7698cd3Brian King 365810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (timer_pending(&tgt->timer)) 365910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ)); 366010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King else { 366110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.data = (unsigned long) tgt; 366210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ); 366310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout; 366410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King add_timer(&tgt->timer); 366510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 366610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 3667989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 366810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) { 3669989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 367010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3671989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3672989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3673989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3674989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3675989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3676989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3677989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 36887d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3698989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3699989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 37137d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 371410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 371510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 37167d0e462247241b8ec2d377306203b58c7f423553Brian King 37177d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 37187d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 37197d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 37207d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37877270b9bde5f382e730e1ef69d6c1b34d388df2b0Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO); 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3789775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n", 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37940883e3b3a85b5860b7729f1279a52e95b87dea97Brian King memset(tgt, 0, sizeof(*tgt)); 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 379910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->cancel_key = vhost->task_set++; 380010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King init_timer(&tgt->timer); 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 38397d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 38487d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 38497d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n", 38507d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 39027d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 39107d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 39137d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n", 39147d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 394779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 1; 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 4000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 4001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 4002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 4003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 400679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout 400779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 400879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 400979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 401079111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt) 401179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 401279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_host *vhost = evt->vhost; 401379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King u32 mad_status = evt->xfer_iu->npiv_logout.common.status; 401479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 401579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_free_event(evt); 401679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 401779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King switch (mad_status) { 401879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_SUCCESS: 401979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (list_empty(&vhost->sent) && 402079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) { 4021861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 402279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King return; 402379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 402479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 402579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_FAILED: 402679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_NOT_SUPPORTED: 402779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_CRQ_ERROR: 402879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_DRIVER_FAILED: 402979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King default: 403079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status); 403179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 403279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 403379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 403479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 403579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 403679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 403779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 403879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout - Issue an NPIV Logout 403979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 404079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 404179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 404279111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *vhost) 404379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 404479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_npiv_logout_mad *mad; 404579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_event *evt; 404679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 404779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King evt = ibmvfc_get_event(vhost); 404879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT); 404979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 405079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad = &evt->iu.npiv_logout; 405179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King memset(mad, 0, sizeof(*mad)); 405279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.version = 1; 405379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.opcode = IBMVFC_NPIV_LOGOUT; 405479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad); 405579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 405679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT); 405779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 405879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 405979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "Sent NPIV logout\n"); 406079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King else 406179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 406279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 406379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 406479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 4072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 4077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 4086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 410079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 411379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 411710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 4168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 417043c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 4171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 417343c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Adding rport\n"); 417443c8da907ccc656935d1085701f4db83385d8a59Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 417543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 417643c8da907ccc656935d1085701f4db83385d8a59Brian King 417743c8da907ccc656935d1085701f4db83385d8a59Brian King if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 417843c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Deleting rport\n"); 417943c8da907ccc656935d1085701f4db83385d8a59Brian King list_del(&tgt->queue); 41800883e3b3a85b5860b7729f1279a52e95b87dea97Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 418143c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_delete(rport); 418243c8da907ccc656935d1085701f4db83385d8a59Brian King del_timer_sync(&tgt->timer); 418343c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 41840883e3b3a85b5860b7729f1279a52e95b87dea97Brian King return; 41850883e3b3a85b5860b7729f1279a52e95b87dea97Brian King } 41860883e3b3a85b5860b7729f1279a52e95b87dea97Brian King 4187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 4188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 418943c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->rport = rport; 4190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 4191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 419252d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 4193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 4194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 4195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 4196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 4197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 4198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 4199d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport->rqst_q) 42008a78362c4eefc1deddbefe2c7f38aabbc2429d6bMartin K. Petersen blk_queue_max_segments(rport->rqst_q, 1); 4201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 4202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 4203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 4208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 4212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 4216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 4218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 4220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 422279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 4224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 422579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 422679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step(vhost); 422779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 4228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 42301c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 42311c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 42321c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4233d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King ssleep(15); 42341c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 42351c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 42361c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 4237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 4239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 4241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 4242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 4252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 4253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 425510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 4258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 4259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 4260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 4261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 4262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 4264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 426510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer_sync(&tgt->timer); 4266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 4267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 427210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 427343c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->reinit) { 427443c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->reinit = 0; 427543c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_block_requests(vhost->host); 427643c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 427743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 427843c8da907ccc656935d1085701f4db83385d8a59Brian King } else { 427943c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 428043c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 428143c8da907ccc656935d1085701f4db83385d8a59Brian King wake_up(&vhost->init_wait_q); 428243c8da907ccc656935d1085701f4db83385d8a59Brian King schedule_work(&vhost->rport_add_work_q); 428343c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->init_retries = 0; 428443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 428543c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_unblock_requests(vhost->host); 428643c8da907ccc656935d1085701f4db83385d8a59Brian King } 428743c8da907ccc656935d1085701f4db83385d8a59Brian King 428810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 428910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 429010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 429110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 429210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 4293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 4294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 4295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 4297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 4298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 4303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 4305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 431510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 431610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 4317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 4327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 4328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 4331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 4333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 4335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 4338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 4340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 4341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 4342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 4344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 4349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 4352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 4357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 4360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 4361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 4364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 4366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 4368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 4370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 4371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 4374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 4376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 4379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 4380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 4381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 43828d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 4383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 4384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 4386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 4387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 4389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 4390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 4391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 4393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 4394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 4395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 4396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 4397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 4400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4401039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost); 4402039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 4403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 4404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 4405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 4409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 4410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 4414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 4418039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 4419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 4420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 4421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 4422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 4423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 4424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 4425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 4426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 4431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 4435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 4437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 4442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 4444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 4446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 4449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 4456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 4462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 4468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 4469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 4470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 4471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 4474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 4475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 4476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 4477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 44788d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 4479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 4480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 4481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 4484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 4485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 4486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 4488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 4489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 4490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 4493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 4494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 4496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 4497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 4498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 4501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 4502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 4503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 4505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 4506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 4507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 4510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 4511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 4513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 4514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4515d68866927ddd0ed3145cb3fba4a1c07ca5e4709dSage Weil vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 4516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 4517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 4519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 4520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 4521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 4527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 4529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 4530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 4532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 4533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 4535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 4537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 4538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 4540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 4542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 454743c8da907ccc656935d1085701f4db83385d8a59Brian King * ibmvfc_rport_add_thread - Worker thread for rport adds 454843c8da907ccc656935d1085701f4db83385d8a59Brian King * @work: work struct 454943c8da907ccc656935d1085701f4db83385d8a59Brian King * 455043c8da907ccc656935d1085701f4db83385d8a59Brian King **/ 455143c8da907ccc656935d1085701f4db83385d8a59Brian Kingstatic void ibmvfc_rport_add_thread(struct work_struct *work) 455243c8da907ccc656935d1085701f4db83385d8a59Brian King{ 455343c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host, 455443c8da907ccc656935d1085701f4db83385d8a59Brian King rport_add_work_q); 455543c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_target *tgt; 455643c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 455743c8da907ccc656935d1085701f4db83385d8a59Brian King unsigned long flags; 455843c8da907ccc656935d1085701f4db83385d8a59Brian King int did_work; 455943c8da907ccc656935d1085701f4db83385d8a59Brian King 456043c8da907ccc656935d1085701f4db83385d8a59Brian King ENTER; 456143c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 456243c8da907ccc656935d1085701f4db83385d8a59Brian King do { 456343c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 0; 456443c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state != IBMVFC_ACTIVE) 456543c8da907ccc656935d1085701f4db83385d8a59Brian King break; 456643c8da907ccc656935d1085701f4db83385d8a59Brian King 456743c8da907ccc656935d1085701f4db83385d8a59Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 456843c8da907ccc656935d1085701f4db83385d8a59Brian King if (tgt->add_rport) { 456943c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 1; 457043c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 457143c8da907ccc656935d1085701f4db83385d8a59Brian King kref_get(&tgt->kref); 457243c8da907ccc656935d1085701f4db83385d8a59Brian King rport = tgt->rport; 457343c8da907ccc656935d1085701f4db83385d8a59Brian King if (!rport) { 457443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 457543c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_tgt_add_rport(tgt); 457643c8da907ccc656935d1085701f4db83385d8a59Brian King } else if (get_device(&rport->dev)) { 457743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 457843c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Setting rport roles\n"); 457943c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_rolechg(rport, tgt->ids.roles); 458043c8da907ccc656935d1085701f4db83385d8a59Brian King put_device(&rport->dev); 458143c8da907ccc656935d1085701f4db83385d8a59Brian King } 458243c8da907ccc656935d1085701f4db83385d8a59Brian King 458343c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 458443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 458543c8da907ccc656935d1085701f4db83385d8a59Brian King break; 458643c8da907ccc656935d1085701f4db83385d8a59Brian King } 458743c8da907ccc656935d1085701f4db83385d8a59Brian King } 458843c8da907ccc656935d1085701f4db83385d8a59Brian King } while(did_work); 458943c8da907ccc656935d1085701f4db83385d8a59Brian King 459043c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state == IBMVFC_ACTIVE) 459143c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->scan_complete = 1; 459243c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 459343c8da907ccc656935d1085701f4db83385d8a59Brian King LEAVE; 459443c8da907ccc656935d1085701f4db83385d8a59Brian King} 459543c8da907ccc656935d1085701f4db83385d8a59Brian King 459643c8da907ccc656935d1085701f4db83385d8a59Brian King/** 4597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 4598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 4600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 4605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 4607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 4608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 4609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 4610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 4613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 4614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 4615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 4616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 4619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 4620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 4621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 4622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 4623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 4624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 4625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 4627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 4628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 4629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 4630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 4631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 4632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 4633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 4634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 463510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->task_set = 1; 4636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 4637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 4638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 463943c8da907ccc656935d1085701f4db83385d8a59Brian King INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread); 4640d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_init(&vhost->passthru_mutex); 4641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 4643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 4644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 4646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 4647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 4649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 4650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 4651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 4652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 4655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 4656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 4657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 4660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 4661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4673d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (shost_to_fc_host(shost)->rqst_q) 46748a78362c4eefc1deddbefe2c7f38aabbc2429d6bMartin K. Petersen blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1); 4675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 47157043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 47167043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 47172d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 47187043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 47197043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 47202d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 47212d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 474039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 4741b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * ibmvfc_resume - Resume from suspend 4742b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * @dev: device struct 4743b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * 4744b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * We may have lost an interrupt across suspend/resume, so kick the 4745b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * interrupt handler 4746b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King * 4747b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King */ 4748b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian Kingstatic int ibmvfc_resume(struct device *dev) 4749b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King{ 4750b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King unsigned long flags; 4751b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 4752b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King struct vio_dev *vdev = to_vio_dev(dev); 4753b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4754b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4755b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King vio_disable_interrupts(vdev); 4756b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King tasklet_schedule(&vhost->tasklet); 4757b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4758b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King return 0; 4759b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King} 4760b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4761b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King/** 476239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 476339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 476439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 476539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 476639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 476739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 476839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 476939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 477039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 477139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 477239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 477339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 477439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4781b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian Kingstatic struct dev_pm_ops ibmvfc_pm_ops = { 4782b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King .resume = ibmvfc_resume 4783b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King}; 4784b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King 4785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 478939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4793b0f4d4cf12d0eaa0bd766686bba843fc105b6a60Brian King .pm = &ibmvfc_pm_ops, 4794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 48049ab3610f9c24e7f303f1b0e6bb88a5f804ab847eBrian King .show_host_maxframe_size = 1, 4805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4829d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 4830d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_request = ibmvfc_bsg_request, 4831d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_timeout = ibmvfc_bsg_timeout, 4832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4874