ibmvfc.c revision d31429e1517c007781dfc68aed9b39cb5d3350a1
1072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/* 2072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc.c -- driver for IBM Power Virtual Fibre Channel Adapter 3072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 5072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 6072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Copyright (C) IBM Corporation, 2008 7072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is free software; you can redistribute it and/or modify 9072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * it under the terms of the GNU General Public License as published by 10072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the Free Software Foundation; either version 2 of the License, or 11072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * (at your option) any later version. 12072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 13072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is distributed in the hope that it will be useful, 14072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * but WITHOUT ANY WARRANTY; without even the implied warranty of 15072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * GNU General Public License for more details. 17072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 18072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * You should have received a copy of the GNU General Public License 19072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * along with this program; if not, write to the Free Software 20072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 22072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 23072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 24072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/module.h> 25072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/moduleparam.h> 26072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dma-mapping.h> 27072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dmapool.h> 28072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/delay.h> 29072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/interrupt.h> 30072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/kthread.h> 31072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/of.h> 32072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/stringify.h> 33072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/firmware.h> 34072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/irq.h> 35072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/vio.h> 36072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi.h> 37072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_cmnd.h> 38072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_host.h> 39072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_device.h> 40072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_tcq.h> 41072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_transport_fc.h> 42d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King#include <scsi/scsi_bsg_fc.h> 43072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include "ibmvfc.h" 44072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 45072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int init_timeout = IBMVFC_INIT_TIMEOUT; 46072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int default_timeout = IBMVFC_DEFAULT_TIMEOUT; 47072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_lun = IBMVFC_MAX_LUN; 48072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_targets = IBMVFC_MAX_TARGETS; 49072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT; 50072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS; 51072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int dev_loss_tmo = IBMVFC_DEV_LOSS_TMO; 52072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int ibmvfc_debug = IBMVFC_DEBUG; 53072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL; 54072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic LIST_HEAD(ibmvfc_head); 55072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic DEFINE_SPINLOCK(ibmvfc_driver_lock); 56072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_transport_template *ibmvfc_transport_template; 57072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 58072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DESCRIPTION("IBM Virtual Fibre Channel Driver"); 59072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>"); 60072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_LICENSE("GPL"); 61072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_VERSION(IBMVFC_DRIVER_VERSION); 62072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 63072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(init_timeout, init_timeout, uint, S_IRUGO | S_IWUSR); 64072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds. " 65072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_INIT_TIMEOUT) "]"); 66072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(default_timeout, default_timeout, uint, S_IRUGO | S_IWUSR); 67072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(default_timeout, 68072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Default timeout in seconds for initialization and EH commands. " 69072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_TIMEOUT) "]"); 70072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_requests, max_requests, uint, S_IRUGO); 71072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_requests, "Maximum requests for this adapter. " 72072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_REQUESTS_DEFAULT) "]"); 73072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_lun, max_lun, uint, S_IRUGO); 74072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_lun, "Maximum allowed LUN. " 75072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_LUN) "]"); 76072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_targets, max_targets, uint, S_IRUGO); 77072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_targets, "Maximum allowed targets. " 78072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_TARGETS) "]"); 79545ef9a2dc1e5ac0463f3754e239ffcc5aaa92e2Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO); 80072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. " 81072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]"); 82072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR); 83072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(debug, "Enable driver debug information. " 84072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEBUG) "]"); 85072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(dev_loss_tmo, dev_loss_tmo, uint, S_IRUGO | S_IWUSR); 86072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC " 87072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "transport should insulate the loss of a remote port. Once this " 88072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "value is exceeded, the scsi target is removed. " 89072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEV_LOSS_TMO) "]"); 90072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(log_level, log_level, uint, 0); 91072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. " 92072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]"); 93072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 94072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 95072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 96072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 error; 97072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 result; 98072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 retry; 99072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int log; 100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} cmd_status [] = { 102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" }, 103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" }, 104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" }, 105752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 1, 1, "network down" }, 106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" }, 107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" }, 108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" }, 109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_REGISTER, DID_ERROR, 1, 1, "unable to register" }, 110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_BUSY, DID_BUS_BUSY, 1, 0, "transport busy" }, 111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" }, 112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" }, 113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" }, 114497f9c504f76e7a751cd370604e1c8521743746dBrian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 0, "link halted" }, 115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" }, 116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" }, 118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" }, 119752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" }, 120752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" }, 121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 122752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" }, 123752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" }, 124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 125646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 14779111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *); 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 2804a2837d4fcaf8a2c2ad61523287073d0c14b9ed0Brian King ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 43643c8da907ccc656935d1085701f4db83385d8a59Brian King if (action == IBMVFC_TGT_ACTION_DEL_RPORT) 43743c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 48279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 48379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->action == IBMVFC_HOST_ACTION_LOGO) 48479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action = action; 48579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 49443c8da907ccc656935d1085701f4db83385d8a59Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 50579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 50910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5272d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5282d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5292d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5302d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 566861890c62d46bd29c73d75fc907aeffd1c4eee06Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost) 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5711c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 580861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 581861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King vhost->async_crq.cur = 0; 582cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 5845e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 648039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 65479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 70179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 771ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 772ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 773ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 81779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 82079111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost) 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 83679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 83979111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 84079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 84179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT && 84279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 84379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King scsi_block_requests(vhost->host); 84479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO); 84579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step = ibmvfc_npiv_logout; 84679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King wake_up(&vhost->work_wait_q); 84779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } else 84879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 84979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 85079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 85179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 85279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_reset_host - Reset the connection to the server 85379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 85479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8687d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if init will be retried / 0 if not 8697d0e462247241b8ec2d377306203b58c7f423553Brian King * 870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 8717d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 8737d0e462247241b8ec2d377306203b58c7f423553Brian King int retry = 0; 8747d0e462247241b8ec2d377306203b58c7f423553Brian King 875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 8761c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 1; 8771c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 8811c41fa8288277e76785acb50f52bb2f39509f903Brian King } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES) 882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 8837d0e462247241b8ec2d377306203b58c7f423553Brian King else { 884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 8857d0e462247241b8ec2d377306203b58c7f423553Brian King retry = 1; 8867d0e462247241b8ec2d377306203b58c7f423553Brian King } 887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 8907d0e462247241b8ec2d377306203b58c7f423553Brian King return retry; 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 894b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 900b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 907b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 908b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 910b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 915b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 921b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 928b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 967775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "Unknown port speed: %lld Gbit\n", 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 1004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 10050ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 10060ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 10070ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 1008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 1009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 1010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1033b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1034b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1035b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1036b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1037b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1038b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1039b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1040b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1041b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1042b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1043b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1052b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1054b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1055b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1067b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1069b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1070b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1082b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1084b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1085b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 10983eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 10993eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 11003eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 11013eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1170497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags = IBMVFC_FLUSH_ON_HALT; 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1172497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags |= IBMVFC_CLIENT_MIGRATED; 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 117752d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 118071610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME); 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 118371610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers location = location ? location : dev_name(vhost->dev); 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1286ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 135764b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scsi_dma_unmap(scmd); 135864b840dd88eb2054f86c72ed6d989cb8681f0058Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 135964b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1418a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King mb(); 1419a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14730ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 14866d29cc56bead73b6f386cf43333708579deb5eedBrian King * ibmvfc_relogin - Log back into the specified device 14876d29cc56bead73b6f386cf43333708579deb5eedBrian King * @sdev: scsi device struct 14886d29cc56bead73b6f386cf43333708579deb5eedBrian King * 14896d29cc56bead73b6f386cf43333708579deb5eedBrian King **/ 14906d29cc56bead73b6f386cf43333708579deb5eedBrian Kingstatic void ibmvfc_relogin(struct scsi_device *sdev) 14916d29cc56bead73b6f386cf43333708579deb5eedBrian King{ 14926d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 14936d29cc56bead73b6f386cf43333708579deb5eedBrian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 14946d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 14956d29cc56bead73b6f386cf43333708579deb5eedBrian King 14966d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 14976d29cc56bead73b6f386cf43333708579deb5eedBrian King if (rport == tgt->rport) { 14986d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 14996d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 15006d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15016d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15026d29cc56bead73b6f386cf43333708579deb5eedBrian King 15036d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 15046d29cc56bead73b6f386cf43333708579deb5eedBrian King} 15056d29cc56bead73b6f386cf43333708579deb5eedBrian King 15066d29cc56bead73b6f386cf43333708579deb5eedBrian King/** 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 15172bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 15182bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 15352bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1537646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 15386d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_relogin(cmnd->device); 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 154050119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 154150119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 154250119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1554ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1555ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1556ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1679d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout_done - Completion handler for cancelling BSG commands 1680d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @evt: struct ibmvfc_event 1681d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1682d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1683d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic void ibmvfc_bsg_timeout_done(struct ibmvfc_event *evt) 1684d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1685d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = evt->vhost; 1686d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1687d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1688d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1689d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Passthru command cancelled\n"); 1690d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1691d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1692d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1693d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_timeout - Handle a BSG timeout 1694d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job that timed out 1695d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1696d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1697d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1698d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1699d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_timeout(struct fc_bsg_job *job) 1700d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1701d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1702d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long port_id = (unsigned long)job->dd_data; 1703d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1704d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_tmf *tmf; 1705d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1706d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc; 1707d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1708d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1709d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1710d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (vhost->aborting_passthru || vhost->state != IBMVFC_ACTIVE) { 1711d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King __ibmvfc_reset_host(vhost); 1712d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1713d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return 0; 1714d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1715d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1716d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 1; 1717d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1718d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_bsg_timeout_done, IBMVFC_MAD_FORMAT); 1719d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1720d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf = &evt->iu.tmf; 1721d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(tmf, 0, sizeof(*tmf)); 1722d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.version = 1; 1723d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1724d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->common.length = sizeof(*tmf); 1725d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->scsi_id = port_id; 1726d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1727d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King tmf->my_cancel_key = IBMVFC_INTERNAL_CANCEL_KEY; 1728d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1729d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1730d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc != 0) { 1731d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King vhost->aborting_passthru = 0; 1732d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_err(vhost->dev, "Failed to send cancel event. rc=%d\n", rc); 1733d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1734d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } else 1735d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dev_info(vhost->dev, "Cancelling passthru command to port id 0x%lx\n", 1736d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id); 1737d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1738d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1739d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1740d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1741d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1742d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1743d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1744d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1745d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_plogi - PLOGI into a target to handle a BSG command 1746d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @vhost: struct ibmvfc_host to send command 1747d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @port_id: port ID to send command 1748d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1749d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1750d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1751d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1752d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_plogi(struct ibmvfc_host *vhost, unsigned int port_id) 1753d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1754d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_port_login *plogi; 1755d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_target *tgt; 1756d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1757d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1758d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags; 1759d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, issue_login = 1; 1760d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1761d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1762d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1763d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 1764d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (tgt->scsi_id == port_id) { 1765d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 0; 1766d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1767d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1768d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1769d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1770d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!issue_login) 1771d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1772d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely((rc = ibmvfc_host_chkready(vhost)))) 1773d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto unlock_out; 1774d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1775d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1776d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1777d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi = &evt->iu.plogi; 1778d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(plogi, 0, sizeof(*plogi)); 1779d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.version = 1; 1780d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 1781d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->common.length = sizeof(*plogi); 1782d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King plogi->scsi_id = port_id; 1783d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1784d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1785d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1786d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 1787d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1788d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1789d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) 1790d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EIO; 1791d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1792d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1793d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1794d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.plogi.common.status) 1795d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1796d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1797d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1798d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1799d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingunlock_out: 1800d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1801d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1802d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1803d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1804d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1805d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1806d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * ibmvfc_bsg_request - Handle a BSG request 1807d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * @job: struct fc_bsg_job to be executed 1808d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 1809d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * Returns: 1810d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King * 0 on success / other on failure 1811d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King **/ 1812d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingstatic int ibmvfc_bsg_request(struct fc_bsg_job *job) 1813d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King{ 1814d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_host *vhost = shost_priv(job->shost); 1815d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct fc_rport *rport = job->rport; 1816d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_passthru_mad *mad; 1817d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King struct ibmvfc_event *evt; 1818d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King union ibmvfc_iu rsp_iu; 1819d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned long flags, port_id = -1; 1820d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unsigned int code = job->request->msgcode; 1821d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King int rc = 0, req_seg, rsp_seg, issue_login = 0; 1822d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King u32 fc_flags, rsp_len; 1823d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1824d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ENTER; 1825d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = 0; 1826d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport) 1827d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = rport->port_id; 1828d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1829d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King switch (code) { 1830d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_ELS_NOLOGIN: 1831d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_els.port_id[0] << 16) | 1832d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_els.port_id[1] << 8) | 1833d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_els.port_id[2]; 1834d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_ELS: 1835d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_ELS; 1836d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1837d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_HST_CT: 1838d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King issue_login = 1; 1839d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King port_id = (job->request->rqst_data.h_ct.port_id[0] << 16) | 1840d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King (job->request->rqst_data.h_ct.port_id[1] << 8) | 1841d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request->rqst_data.h_ct.port_id[2]; 1842d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King case FC_BSG_RPT_CT: 1843d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King fc_flags = IBMVFC_FC_CT_IU; 1844d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King break; 1845d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King default: 1846d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOTSUPP; 1847d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King }; 1848d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1849d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (port_id == -1) 1850d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EINVAL; 1851d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!mutex_trylock(&vhost->passthru_mutex)) 1852d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -EBUSY; 1853d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1854d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->dd_data = (void *)port_id; 1855d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King req_seg = dma_map_sg(vhost->dev, job->request_payload.sg_list, 1856d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1857d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1858d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!req_seg) { 1859d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1860d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1861d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1862d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1863d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_seg = dma_map_sg(vhost->dev, job->reply_payload.sg_list, 1864d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1865d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1866d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (!rsp_seg) { 1867d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1868d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1869d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1870d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return -ENOMEM; 1871d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1872d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1873d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (req_seg > 1 || rsp_seg > 1) { 1874d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EINVAL; 1875d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1876d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1877d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1878d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (issue_login) 1879d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_bsg_plogi(vhost, port_id); 1880d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1881d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1882d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1883d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (unlikely(rc || (rport && (rc = fc_remote_port_chkready(rport)))) || 1884d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1885d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1886d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1887d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1888d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1889d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt = ibmvfc_get_event(vhost); 1890d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1891d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad = &evt->iu.passthru; 1892d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1893d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King memset(mad, 0, sizeof(*mad)); 1894d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.version = 1; 1895d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.opcode = IBMVFC_PASSTHRU; 1896d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 1897d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1898d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 1899d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King offsetof(struct ibmvfc_passthru_mad, iu); 1900d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->cmd_ioba.len = sizeof(mad->iu); 1901d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1902d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd_len = job->request_payload.payload_len; 1903d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp_len = job->reply_payload.payload_len; 1904d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.flags = fc_flags; 1905d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cancel_key = IBMVFC_PASSTHRU_CANCEL_KEY; 1906d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1907d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.va = sg_dma_address(job->request_payload.sg_list); 1908d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.cmd.len = sg_dma_len(job->request_payload.sg_list); 1909d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.va = sg_dma_address(job->reply_payload.sg_list); 1910d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.rsp.len = sg_dma_len(job->reply_payload.sg_list); 1911d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.scsi_id = port_id; 1912d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mad->iu.tag = (u64)evt; 1913d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rsp_len = mad->iu.rsp.len; 1914d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1915d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King evt->sync_iu = &rsp_iu; 1916d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King init_completion(&evt->comp); 1917d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = ibmvfc_send_event(evt, vhost, 0); 1918d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1919d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1920d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rc) { 1921d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1922d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King goto out; 1923d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King } 1924d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1925d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King wait_for_completion(&evt->comp); 1926d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1927d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rsp_iu.passthru.common.status) 1928d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = -EIO; 1929d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King else 1930d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->reply_payload_rcv_len = rsp_len; 1931d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1932d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1933d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King ibmvfc_free_event(evt); 1934d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1935d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply->result = rc; 1936d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->job_done(job); 1937d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King rc = 0; 1938d31429e1517c007781dfc68aed9b39cb5d3350a1Brian Kingout: 1939d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->request_payload.sg_list, 1940d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->request_payload.sg_cnt, DMA_TO_DEVICE); 1941d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King dma_unmap_sg(vhost->dev, job->reply_payload.sg_list, 1942d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King job->reply_payload.sg_cnt, DMA_FROM_DEVICE); 1943d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_unlock(&vhost->passthru_mutex); 1944d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King LEAVE; 1945d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King return rc; 1946d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King} 1947d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 1948d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King/** 1949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 196250ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 2000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2002230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 2003230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2004230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2005230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 2006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 2040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 2075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 2076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 2077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 2079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 2088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2094230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 2095230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 2096230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 2097230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 2123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2130ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2131ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 2132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 2157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 2169ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2201ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 2202ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 2203ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 2204ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2205ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2206ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 2207ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2208ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 2209ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2210ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 2211ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 2212ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2213ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2214ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2215ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2216ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 2217ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 2218ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 2219ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2220ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2221ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 2222ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2223ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 2224ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2225ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 2226ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 2227ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2228ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2229ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2230ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2231ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 2232ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 2233ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 2234ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 2235ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2236ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2237ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 2238ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2239ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 2240ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 2241ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2242ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 2243ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 2244ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 2245ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 2246ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 2247ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2248ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 2249ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 2250ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 2251ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2252ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 2253ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 2254ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 2255ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 2256ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2257ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2258ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2259ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2260ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 2261ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 2262ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2263ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 2264ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 2265ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2266ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 2267ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 2268ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 2269ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 2270ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2271ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2272ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2273ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 2274ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 2275ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2276ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 2277ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2278ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2279ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 2280ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2281ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2282ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 2283ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2284ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2285ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2294ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2295ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 2297ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2301ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2302ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2304ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2305ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2308ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2320ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2321ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 2323ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2327ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 2328ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 2329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2330ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2331ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2334ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 23384a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_abts - Device iterated cancel all function 2339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 23434a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_abts(struct scsi_device *sdev, void *data) 23444a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King{ 23454a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King unsigned long *rc = data; 23464a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 23474a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King} 23484a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King 23494a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King/** 23504a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function 23514a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @sdev: scsi device struct 23524a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @data: return code 23534a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * 23544a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King **/ 23554a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2382ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2383ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2384ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2386ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 23914a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset); 2392ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2394ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2395ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2398ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2430ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 24334a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_abts); 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2436ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2437ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2438ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2439ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 24916d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2493775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx," 2494775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2498497f9c504f76e7a751cd370604e1c8521743746dBrian King switch (crq->link_state) { 2499497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DOWN: 2500497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2501497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2502497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DEAD: 2503497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2504497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2505497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_UP: 2506497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_BOUNCED: 2507497f9c504f76e7a751cd370604e1c8521743746dBrian King default: 2508497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2509497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->delay_init = 1; 2510497f9c504f76e7a751cd370604e1c8521743746dBrian King __ibmvfc_reset_host(vhost); 2511497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2512497f9c504f76e7a751cd370604e1c8521743746dBrian King }; 2513497f9c504f76e7a751cd370604e1c8521743746dBrian King 2514497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2515497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LINK_UP: 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2517d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2518d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2521d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King case IBMVFC_AE_SCN_DOMAIN: 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2523d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2524d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 25296d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 25306d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 2531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 25346d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 25356d29cc56bead73b6f386cf43333708579deb5eedBrian King if (!crq->scsi_id && !crq->wwpn && !crq->node_name) 25366d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 25376d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->scsi_id && tgt->scsi_id != crq->scsi_id) 25386d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 25396d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->wwpn && tgt->ids.port_name != crq->wwpn) 25406d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 25416d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->node_name && tgt->ids.node_name != crq->node_name) 25426d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 2543017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (tgt->need_login && crq->event == IBMVFC_AE_ELS_LOGO) 2544017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 1; 2545017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (!tgt->need_login || crq->event == IBMVFC_AE_ELS_PLOGI) { 2546017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2547017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_reinit_host(vhost); 2548017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King } 25496d29cc56bead73b6f386cf43333708579deb5eedBrian King } 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2562775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event); 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2586861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2592861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 260079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2640775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2646775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 267843c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->scan_complete) 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2711ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2712ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2713ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2714ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2715ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2716ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2717ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2718ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2719ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2720ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2721ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2722ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2723ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2724ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2725ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2726ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2727ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2728ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2729ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2730ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2731ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2732ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2851497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic ssize_t ibmvfc_show_host_capabilities(struct device *dev, 2852497f9c504f76e7a751cd370604e1c8521743746dBrian King struct device_attribute *attr, char *buf) 2853497f9c504f76e7a751cd370604e1c8521743746dBrian King{ 2854497f9c504f76e7a751cd370604e1c8521743746dBrian King struct Scsi_Host *shost = class_to_shost(dev); 2855497f9c504f76e7a751cd370604e1c8521743746dBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2856497f9c504f76e7a751cd370604e1c8521743746dBrian King return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities); 2857497f9c504f76e7a751cd370604e1c8521743746dBrian King} 2858497f9c504f76e7a751cd370604e1c8521743746dBrian King 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 290385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL); 290485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL); 290585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL); 290685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL); 290785e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL); 2908497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL); 290985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR, 291085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King ibmvfc_show_log_level, ibmvfc_store_log_level); 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 295985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_partition_name, 296085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_device_name, 296185e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_port_loc_code, 296285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_drc_name, 296385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_npiv_version, 2964497f9c504f76e7a751cd370604e1c8521743746dBrian King &dev_attr_capabilities, 296585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_log_level, 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2980ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 3030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 3031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 3033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 3035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 3048039a08981a49e05f09db969cdd3f38f05a5df46fBrian King unsigned long flags; 3049039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3050039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 3051039a08981a49e05f09db969cdd3f38f05a5df46fBrian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 3052039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_schedule(&vhost->tasklet); 3053039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3054039a08981a49e05f09db969cdd3f38f05a5df46fBrian King return IRQ_HANDLED; 3055039a08981a49e05f09db969cdd3f38f05a5df46fBrian King} 3056039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 3057039a08981a49e05f09db969cdd3f38f05a5df46fBrian King/** 3058039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * ibmvfc_tasklet - Interrupt handler tasklet 3059039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * @data: ibmvfc host struct 3060039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * 3061039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Returns: 3062039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Nothing 3063039a08981a49e05f09db969cdd3f38f05a5df46fBrian King **/ 3064039a08981a49e05f09db969cdd3f38f05a5df46fBrian Kingstatic void ibmvfc_tasklet(void *data) 3065039a08981a49e05f09db969cdd3f38f05a5df46fBrian King{ 3066039a08981a49e05f09db969cdd3f38f05a5df46fBrian King struct ibmvfc_host *vhost = data; 3067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 3068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 3069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 3070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 3072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 3079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3081f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King /* Pull all the valid messages off the CRQ */ 3082f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 3085f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } 3086f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King 3087f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_enable_interrupts(vdev); 3088f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 3089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 30914081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 3092f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 3093f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_disable_interrupts(vdev); 3094f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King ibmvfc_handle_crq(crq, vhost); 3095f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King crq->valid = 0; 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 3098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 3119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 3121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 31227d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if step will be retried / 0 if not 31237d0e462247241b8ec2d377306203b58c7f423553Brian King * 3124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 31257d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 3126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 3127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 31281c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 3129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 31317d0e462247241b8ec2d377306203b58c7f423553Brian King return 0; 3132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 31347d0e462247241b8ec2d377306203b58c7f423553Brian King return 1; 3135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3137a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/* Defined in FC-LS */ 3138a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic const struct { 3139a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code; 3140a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int retry; 3141a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int logged_in; 3142a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} prli_rsp [] = { 3143a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 0, 1, 0 }, 3144a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 1, 0, 1 }, 3145a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 2, 1, 0 }, 3146a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 3, 1, 0 }, 3147a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 4, 0, 0 }, 3148a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 5, 0, 0 }, 3149a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 6, 0, 1 }, 3150a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 7, 0, 0 }, 3151a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 8, 1, 0 }, 3152a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King}; 3153a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3154a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/** 3155a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * ibmvfc_get_prli_rsp - Find PRLI response index 3156a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * @flags: PRLI response flags 3157a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * 3158a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King **/ 3159a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic int ibmvfc_get_prli_rsp(u16 flags) 3160a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King{ 3161a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int i; 3162a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code = (flags & 0x0f00) >> 8; 3163a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3164a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King for (i = 0; i < ARRAY_SIZE(prli_rsp); i++) 3165a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[i].code == code) 3166a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return i; 3167a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3168a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return 0; 3169a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} 3170a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 3177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 3181a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King struct ibmvfc_prli_svc_parms *parms = &rsp->parms; 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 31837d0e462247241b8ec2d377306203b58c7f423553Brian King int index, level = IBMVFC_DEFAULT_LOG_LEVEL; 3184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3189a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n", 3190a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King parms->type, parms->flags, parms->service_parms); 3191a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 3192a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->type == IBMVFC_SCSI_FCP_TYPE) { 3193a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King index = ibmvfc_get_prli_rsp(parms->flags); 3194a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[index].logged_in) { 3195a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) { 3196a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->need_login = 0; 3197a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles = 0; 3198a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC) 3199a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET; 3200a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC) 3201a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 320243c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 1; 3203a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3204a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3205a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else if (prli_rsp[index].retry) 3206a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3207a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King else 3208a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3209a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 3210a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 3216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3219017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if ((rsp->status & IBMVFC_VIOS_FAILURE) && rsp->error == IBMVFC_PLOGI_REQUIRED) 3220017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3221017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (tgt->logo_rcvd) 3222017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3223017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 32247d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 322510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 322610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 32277d0e462247241b8ec2d377306203b58c7f423553Brian King 32287d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 32297d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 32307d0e462247241b8ec2d377306203b58c7f423553Brian King rsp->status, rsp->error, status); 3231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 3241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 3245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 3247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 3260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 3266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 3267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 3268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 3276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 3280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 3284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 32897d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 3296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 3297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 3298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 3299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 3300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 3303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 3304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 3305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 3306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 3307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 33197d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 332010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 332110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 33227d0e462247241b8ec2d377306203b58c7f423553Brian King 33237d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 33247d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 33257d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 33267d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 3327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3350017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 0; 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3446989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3447989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3448989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3449989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3450989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3451989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3452989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3453989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3454989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3455989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3456989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3457989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3458989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3459989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3460989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3461989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3462989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3463989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3464989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3465989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3466989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3467989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3468989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3469989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3470989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3471989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3472989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3473989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3474989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3475989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3476989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3477989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3478989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3479989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3480989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3481989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 348210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3483989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3484989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3485989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3486989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3487989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 34885e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3489989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3490989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3491989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3492989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3493989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 34945e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3495989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3496989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3497989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3498989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3499989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3500989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3501989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3502989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3503989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3504989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3505989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3506989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3507989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3508989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3509989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3510989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3511989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3512989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3513989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3514989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3515989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3516989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3517989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3518989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3519989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3520989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3521989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3522989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3523989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3524989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3525989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3526989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3527989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3528989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3529989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3530989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3531989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3532989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3533989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3534989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3535989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3536989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3537989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3538989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 353910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC 354010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @evt: ibmvfc event struct 354110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 354210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * Just cleanup this event struct. Everything else is handled by 354310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * the ADISC completion handler. If the ADISC never actually comes 354410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * back, we still have the timer running on the ADISC event struct 354510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * which will fire and cause the CRQ to get reset. 354610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 354710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 354810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt) 354910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 355010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = evt->vhost; 355110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_target *tgt = evt->tgt; 355210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 355310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC cancel complete\n"); 355410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 355510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_free_event(evt); 355610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 355710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King wake_up(&vhost->work_wait_q); 355810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 355910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 356010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 356110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_adisc_timeout - Handle an ADISC timeout 356210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @tgt: ibmvfc target struct 356310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 356410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * If an ADISC times out, send a cancel. If the cancel times 356510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * out, reset the CRQ. When the ADISC comes back as cancelled, 356610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * log back into the target. 356710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 356810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt) 356910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 357010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = tgt->vhost; 357110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_event *evt; 357210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_tmf *tmf; 357310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King unsigned long flags; 357410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King int rc; 357510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 357610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC timeout\n"); 357710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 357810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (vhost->abort_threads >= disc_threads || 357910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT || 358010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->state != IBMVFC_INITIALIZING || 358110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) { 358210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 358310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King return; 358410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 358510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 358610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads++; 358710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_get(&tgt->kref); 358810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt = ibmvfc_get_event(vhost); 358910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT); 359010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 359110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt->tgt = tgt; 359210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf = &evt->iu.tmf; 359310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King memset(tmf, 0, sizeof(*tmf)); 359410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.version = 1; 359510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.opcode = IBMVFC_TMF_MAD; 359610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.length = sizeof(*tmf); 359710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->scsi_id = tgt->scsi_id; 359810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->cancel_key = tgt->cancel_key; 359910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 360010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 360110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 360210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (rc) { 360310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc); 360410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 360510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 360610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King __ibmvfc_reset_host(vhost); 360710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } else 360810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "Attempting to cancel ADISC\n"); 360910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 361010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 361110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 361210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 3613989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3614989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3615989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 361610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * When sending an ADISC we end up with two timers running. The 361710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * first timer is the timer in the ibmvfc target struct. If this 361810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, we send a cancel to the target. The second timer is the 361910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * timer on the ibmvfc event for the ADISC, which is longer. If that 362010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, it means the ADISC timed out and our attempt to cancel it 362110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * also failed, so we need to reset the CRQ. 3622989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3623989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3624989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3625989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3626989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3627989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3628989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3629989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3630989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3631989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3632989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3633989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3634989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3635989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3636989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3637989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3638989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3639989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3640989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3641989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 364210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mad->iu.cancel_key = tgt->cancel_key; 3643989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3644989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3645989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3646989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3647989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3648989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3649989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3650989b854579875b38d45fffa7f8c89177f7698cd3Brian King 365110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (timer_pending(&tgt->timer)) 365210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ)); 365310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King else { 365410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.data = (unsigned long) tgt; 365510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ); 365610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout; 365710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King add_timer(&tgt->timer); 365810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 365910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 3660989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 366110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) { 3662989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 366310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3664989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3665989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3666989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3667989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3668989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3669989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3670989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 36817d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3691989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3692989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 37067d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 370710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 370810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 37097d0e462247241b8ec2d377306203b58c7f423553Brian King 37107d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 37117d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 37127d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 37137d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37807270b9bde5f382e730e1ef69d6c1b34d388df2b0Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO); 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3782775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n", 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37870883e3b3a85b5860b7729f1279a52e95b87dea97Brian King memset(tgt, 0, sizeof(*tgt)); 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 379210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->cancel_key = vhost->task_set++; 379310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King init_timer(&tgt->timer); 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 38327d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 38417d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 38427d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n", 38437d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 38957d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 39037d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 39067d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n", 39077d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 394079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 1; 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 399979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout 400079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 400179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 400279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 400379111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt) 400479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 400579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_host *vhost = evt->vhost; 400679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King u32 mad_status = evt->xfer_iu->npiv_logout.common.status; 400779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 400879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_free_event(evt); 400979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 401079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King switch (mad_status) { 401179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_SUCCESS: 401279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (list_empty(&vhost->sent) && 401379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) { 4014861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 401579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King return; 401679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 401779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 401879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_FAILED: 401979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_NOT_SUPPORTED: 402079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_CRQ_ERROR: 402179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_DRIVER_FAILED: 402279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King default: 402379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status); 402479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 402579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 402679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 402779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 402879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 402979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 403079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 403179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout - Issue an NPIV Logout 403279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 403379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 403479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 403579111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *vhost) 403679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 403779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_npiv_logout_mad *mad; 403879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_event *evt; 403979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 404079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King evt = ibmvfc_get_event(vhost); 404179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT); 404279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 404379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad = &evt->iu.npiv_logout; 404479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King memset(mad, 0, sizeof(*mad)); 404579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.version = 1; 404679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.opcode = IBMVFC_NPIV_LOGOUT; 404779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad); 404879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 404979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT); 405079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 405179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 405279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "Sent NPIV logout\n"); 405379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King else 405479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 405579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 405679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 405779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 4079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 409379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 410679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 411010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 4117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 4121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 416343c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 416643c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Adding rport\n"); 416743c8da907ccc656935d1085701f4db83385d8a59Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 416843c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 416943c8da907ccc656935d1085701f4db83385d8a59Brian King 417043c8da907ccc656935d1085701f4db83385d8a59Brian King if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 417143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Deleting rport\n"); 417243c8da907ccc656935d1085701f4db83385d8a59Brian King list_del(&tgt->queue); 41730883e3b3a85b5860b7729f1279a52e95b87dea97Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 417443c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_delete(rport); 417543c8da907ccc656935d1085701f4db83385d8a59Brian King del_timer_sync(&tgt->timer); 417643c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 41770883e3b3a85b5860b7729f1279a52e95b87dea97Brian King return; 41780883e3b3a85b5860b7729f1279a52e95b87dea97Brian King } 41790883e3b3a85b5860b7729f1279a52e95b87dea97Brian King 4180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 4181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 418243c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->rport = rport; 4183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 4184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 418552d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 4186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 4187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 4188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 4189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 4190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 4191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 4192d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (rport->rqst_q) 4193d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King blk_queue_max_hw_segments(rport->rqst_q, 1); 4194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 4195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 4196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 4201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 4205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 4207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 4209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 4211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 4213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 4214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 421579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 4216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 4217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 421879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 421979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step(vhost); 422079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 4221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 4222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 42231c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 42241c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 42251c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4226d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King ssleep(15); 42271c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 42281c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 42291c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 4230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 4232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 4233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 4234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 4235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 4237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 4245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 4246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 424810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 4249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 4251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 4252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 4253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 4254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 4255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 4257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 425810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer_sync(&tgt->timer); 4259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 4260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 426510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 426643c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->reinit) { 426743c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->reinit = 0; 426843c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_block_requests(vhost->host); 426943c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 427043c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 427143c8da907ccc656935d1085701f4db83385d8a59Brian King } else { 427243c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 427343c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 427443c8da907ccc656935d1085701f4db83385d8a59Brian King wake_up(&vhost->init_wait_q); 427543c8da907ccc656935d1085701f4db83385d8a59Brian King schedule_work(&vhost->rport_add_work_q); 427643c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->init_retries = 0; 427743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 427843c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_unblock_requests(vhost->host); 427943c8da907ccc656935d1085701f4db83385d8a59Brian King } 428043c8da907ccc656935d1085701f4db83385d8a59Brian King 428110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 428210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 428310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 428410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 428510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 4286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 4287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 4288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 4290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 4291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 4296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 4298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 430810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 430910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 4310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 4320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 4321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 4324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 4326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 4328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 4331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 4333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 4334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 4335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 4337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 4342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 4345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 4350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 4353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 4354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 4357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 4359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 4361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 4363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 4364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 4367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 4369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 4372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 4373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 4374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 43758d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 4376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 4377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 4379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 4380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 4382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 4383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 4384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 4386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 4387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 4388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 4389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 4390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 4393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4394039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost); 4395039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 4396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 4397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 4398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 4402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 4403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 4407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 4411039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 4412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 4413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 4414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 4415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 4416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 4417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 4418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 4419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 4424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 4428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 4430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 4435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 4437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 4439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 4442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 4449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 4455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 4461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 4462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 4463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 4464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 4467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 4468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 4469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 4470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 44718d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 4472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 4473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 4474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 4477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 4478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 4479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 4481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 4482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 4483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 4486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 4487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 4489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 4490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 4491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 4494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 4495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 4496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 4498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 4499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 4500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 4503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 4504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 4506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 4507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4508d68866927ddd0ed3145cb3fba4a1c07ca5e4709dSage Weil vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 4509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 4510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 4512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 4513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 4514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 4520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 4522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 4523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 4525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 4526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 4528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 4530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 4531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 4533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 4535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 454043c8da907ccc656935d1085701f4db83385d8a59Brian King * ibmvfc_rport_add_thread - Worker thread for rport adds 454143c8da907ccc656935d1085701f4db83385d8a59Brian King * @work: work struct 454243c8da907ccc656935d1085701f4db83385d8a59Brian King * 454343c8da907ccc656935d1085701f4db83385d8a59Brian King **/ 454443c8da907ccc656935d1085701f4db83385d8a59Brian Kingstatic void ibmvfc_rport_add_thread(struct work_struct *work) 454543c8da907ccc656935d1085701f4db83385d8a59Brian King{ 454643c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host, 454743c8da907ccc656935d1085701f4db83385d8a59Brian King rport_add_work_q); 454843c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_target *tgt; 454943c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 455043c8da907ccc656935d1085701f4db83385d8a59Brian King unsigned long flags; 455143c8da907ccc656935d1085701f4db83385d8a59Brian King int did_work; 455243c8da907ccc656935d1085701f4db83385d8a59Brian King 455343c8da907ccc656935d1085701f4db83385d8a59Brian King ENTER; 455443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 455543c8da907ccc656935d1085701f4db83385d8a59Brian King do { 455643c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 0; 455743c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state != IBMVFC_ACTIVE) 455843c8da907ccc656935d1085701f4db83385d8a59Brian King break; 455943c8da907ccc656935d1085701f4db83385d8a59Brian King 456043c8da907ccc656935d1085701f4db83385d8a59Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 456143c8da907ccc656935d1085701f4db83385d8a59Brian King if (tgt->add_rport) { 456243c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 1; 456343c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 456443c8da907ccc656935d1085701f4db83385d8a59Brian King kref_get(&tgt->kref); 456543c8da907ccc656935d1085701f4db83385d8a59Brian King rport = tgt->rport; 456643c8da907ccc656935d1085701f4db83385d8a59Brian King if (!rport) { 456743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 456843c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_tgt_add_rport(tgt); 456943c8da907ccc656935d1085701f4db83385d8a59Brian King } else if (get_device(&rport->dev)) { 457043c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 457143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Setting rport roles\n"); 457243c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_rolechg(rport, tgt->ids.roles); 457343c8da907ccc656935d1085701f4db83385d8a59Brian King put_device(&rport->dev); 457443c8da907ccc656935d1085701f4db83385d8a59Brian King } 457543c8da907ccc656935d1085701f4db83385d8a59Brian King 457643c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 457743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 457843c8da907ccc656935d1085701f4db83385d8a59Brian King break; 457943c8da907ccc656935d1085701f4db83385d8a59Brian King } 458043c8da907ccc656935d1085701f4db83385d8a59Brian King } 458143c8da907ccc656935d1085701f4db83385d8a59Brian King } while(did_work); 458243c8da907ccc656935d1085701f4db83385d8a59Brian King 458343c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state == IBMVFC_ACTIVE) 458443c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->scan_complete = 1; 458543c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 458643c8da907ccc656935d1085701f4db83385d8a59Brian King LEAVE; 458743c8da907ccc656935d1085701f4db83385d8a59Brian King} 458843c8da907ccc656935d1085701f4db83385d8a59Brian King 458943c8da907ccc656935d1085701f4db83385d8a59Brian King/** 4590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 4591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 4593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 4598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 4600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 4601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 4602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 4603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 4606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 4607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 4608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 4609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 4612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 4613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 4614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 4615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 4616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 4617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 4618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 4620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 4621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 4622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 4623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 4624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 4625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 4626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 4627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 462810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->task_set = 1; 4629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 4630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 4631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 463243c8da907ccc656935d1085701f4db83385d8a59Brian King INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread); 4633d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King mutex_init(&vhost->passthru_mutex); 4634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 4636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 4637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 4639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 4640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 4642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 4643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 4644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 4645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 4648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 4649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 4650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 4653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 4654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4666d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King if (shost_to_fc_host(shost)->rqst_q) 4667d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King blk_queue_max_hw_segments(shost_to_fc_host(shost)->rqst_q, 1); 4668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 47087043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 47097043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 47102d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 47117043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 47127043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 47132d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 47142d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 473339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 473439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 473539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 473639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 473739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 473839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 473939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 474039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 474139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 474239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 474339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 474439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 474539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 474639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 475739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 47719ab3610f9c24e7f303f1b0e6bb88a5f804ab847eBrian King .show_host_maxframe_size = 1, 4772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4796d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King 4797d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_request = ibmvfc_bsg_request, 4798d31429e1517c007781dfc68aed9b39cb5d3350a1Brian King .bsg_timeout = ibmvfc_bsg_timeout, 4799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4841