ibmvfc.c revision 1c41fa8288277e76785acb50f52bb2f39509f903
1072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/* 2072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc.c -- driver for IBM Power Virtual Fibre Channel Adapter 3072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 5072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 6072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Copyright (C) IBM Corporation, 2008 7072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is free software; you can redistribute it and/or modify 9072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * it under the terms of the GNU General Public License as published by 10072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the Free Software Foundation; either version 2 of the License, or 11072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * (at your option) any later version. 12072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 13072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This program is distributed in the hope that it will be useful, 14072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * but WITHOUT ANY WARRANTY; without even the implied warranty of 15072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * GNU General Public License for more details. 17072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 18072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * You should have received a copy of the GNU General Public License 19072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * along with this program; if not, write to the Free Software 20072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 22072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 23072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 24072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/module.h> 25072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/moduleparam.h> 26072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dma-mapping.h> 27072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/dmapool.h> 28072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/delay.h> 29072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/interrupt.h> 30072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/kthread.h> 31072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/of.h> 32072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <linux/stringify.h> 33072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/firmware.h> 34072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/irq.h> 35072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <asm/vio.h> 36072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi.h> 37072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_cmnd.h> 38072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_host.h> 39072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_device.h> 40072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_tcq.h> 41072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include <scsi/scsi_transport_fc.h> 42072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#include "ibmvfc.h" 43072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 44072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int init_timeout = IBMVFC_INIT_TIMEOUT; 45072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int default_timeout = IBMVFC_DEFAULT_TIMEOUT; 46072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_lun = IBMVFC_MAX_LUN; 47072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_targets = IBMVFC_MAX_TARGETS; 48072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT; 49072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS; 50072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int dev_loss_tmo = IBMVFC_DEV_LOSS_TMO; 51072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int ibmvfc_debug = IBMVFC_DEBUG; 52072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL; 53072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic LIST_HEAD(ibmvfc_head); 54072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic DEFINE_SPINLOCK(ibmvfc_driver_lock); 55072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_transport_template *ibmvfc_transport_template; 56072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 57072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DESCRIPTION("IBM Virtual Fibre Channel Driver"); 58072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_AUTHOR("Brian King <brking@linux.vnet.ibm.com>"); 59072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_LICENSE("GPL"); 60072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_VERSION(IBMVFC_DRIVER_VERSION); 61072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 62072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(init_timeout, init_timeout, uint, S_IRUGO | S_IWUSR); 63072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(init_timeout, "Initialization timeout in seconds. " 64072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_INIT_TIMEOUT) "]"); 65072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(default_timeout, default_timeout, uint, S_IRUGO | S_IWUSR); 66072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(default_timeout, 67072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Default timeout in seconds for initialization and EH commands. " 68072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_TIMEOUT) "]"); 69072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_requests, max_requests, uint, S_IRUGO); 70072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_requests, "Maximum requests for this adapter. " 71072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_REQUESTS_DEFAULT) "]"); 72072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_lun, max_lun, uint, S_IRUGO); 73072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_lun, "Maximum allowed LUN. " 74072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_LUN) "]"); 75072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(max_targets, max_targets, uint, S_IRUGO); 76072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(max_targets, "Maximum allowed targets. " 77072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_TARGETS) "]"); 78072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO | S_IWUSR); 79072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(disc_threads, "Number of device discovery threads to use. " 80072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_MAX_DISC_THREADS) "]"); 81072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(debug, ibmvfc_debug, uint, S_IRUGO | S_IWUSR); 82072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(debug, "Enable driver debug information. " 83072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEBUG) "]"); 84072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(dev_loss_tmo, dev_loss_tmo, uint, S_IRUGO | S_IWUSR); 85072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC " 86072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "transport should insulate the loss of a remote port. Once this " 87072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "value is exceeded, the scsi target is removed. " 88072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEV_LOSS_TMO) "]"); 89072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_param_named(log_level, log_level, uint, 0); 90072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. " 91072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]"); 92072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 93072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 94072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 95072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 error; 96072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 result; 97072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 retry; 98072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int log; 99072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} cmd_status [] = { 101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_ESTABLISH, DID_ERROR, 1, 1, "unable to establish" }, 102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_FAULT, DID_OK, 1, 0, "transport fault" }, 103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CMD_TIMEOUT, DID_TIME_OUT, 1, 1, "command timeout" }, 104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_NO_CONNECT, 1, 1, "network down" }, 105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_HW_FAILURE, DID_ERROR, 1, 1, "hardware failure" }, 106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DOWN_ERR, DID_REQUEUE, 0, 0, "link down" }, 107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_DEAD_ERR, DID_ERROR, 0, 0, "link dead" }, 108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_UNABLE_TO_REGISTER, DID_ERROR, 1, 1, "unable to register" }, 109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_BUSY, DID_BUS_BUSY, 1, 0, "transport busy" }, 110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_DEAD, DID_ERROR, 0, 1, "transport dead" }, 111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_CONFIG_ERROR, DID_ERROR, 1, 1, "configuration error" }, 112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_NAME_SERVER_FAIL, DID_ERROR, 1, 1, "name server failure" }, 113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 0, 0, "link halted" }, 114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_XPORT_GENERAL, DID_OK, 1, 0, "general transport error" }, 115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_CRQ_FAILURE, DID_REQUEUE, 1, 1, "CRQ failure" }, 117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_SW_FAILURE, DID_ERROR, 0, 1, "software failure" }, 118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ABORT, 0, 1, "invalid parameter" }, 119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ABORT, 0, 1, "missing parameter" }, 120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ABORT, 0, 1, "transaction cancelled" }, 122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ABORT, 0, 1, "transaction cancelled implicit" }, 123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 124646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ((!fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 50010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5192d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5202d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5212d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5222d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 554cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King * @relogin: is this a re-login? 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 559cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost, int relogin) 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5641c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 573cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King if (!relogin) { 574cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 575cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King vhost->async_crq.cur = 0; 576cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King } 577cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 763ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 764ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 765ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_host - Reset the connection to the server 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 8481c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 1; 8491c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 8531c41fa8288277e76785acb50f52bb2f39509f903Brian King } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES) 854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 863b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 869b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 876b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 877b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 879b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 884b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 890b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 897b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port speed: %ld Gbit\n", 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 9740ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 9750ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 9760ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1002b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1003b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1004b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1005b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1006b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1007b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1008b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1009b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1010b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1011b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1012b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1021b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1023b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1024b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1036b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1038b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1039b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1051b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1053b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1054b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 10673eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 10683eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 10693eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 10703eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->flags = IBMVFC_CLIENT_MIGRATED; 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 114552d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->shost_gendev.bus_id, IBMVFC_MAX_NAME); 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = location ? location : vhost->dev->bus_id; 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1254ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14370ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 14602bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 14612bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 14782bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1480646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 1481646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King ibmvfc_reinit_host(evt->vhost); 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 148350119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 148450119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 148550119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1497ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1498ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1499ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rport->supported_classes & FC_COS_CLASS3) && 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3)) 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags = IBMVFC_CLASS_3_ERR; 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 163850ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 1699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 1700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 1702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 1703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 1708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 1731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 1751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 1761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 1765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 1772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 1779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 1788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 1789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 1790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 1792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 1793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 1798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1800ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 1801ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 1802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 1803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 1805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 1808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 1822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 1831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 1833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 1835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 1836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 1837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 1838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1839ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 1840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 1842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 1850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 1854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 1857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 1862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 1863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 1867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1871ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 1872ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1873ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 1874ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1875ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1876ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 1877ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1878ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 1879ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1880ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 1881ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1882ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1883ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1884ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1885ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1886ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 1887ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1888ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 1889ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1890ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1891ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 1892ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1893ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 1894ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1895ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 1896ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1897ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1898ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1899ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1900ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1901ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 1902ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 1903ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 1904ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 1905ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1906ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1907ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 1908ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1909ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 1910ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 1911ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1912ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 1913ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 1914ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 1915ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 1916ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 1917ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1918ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 1919ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 1920ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1921ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1922ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1923ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1924ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 1925ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1926ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1927ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1928ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1929ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1930ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 1931ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 1932ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1933ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 1934ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1935ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1936ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1937ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1938ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1939ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1940ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1941ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1942ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1943ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 1944ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 1945ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1946ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 1947ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1948ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1949ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 1950ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1951ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1952ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 1953ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1954ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1955ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 1957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 1958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 1963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1964ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 1965ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 1967ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 1968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1971ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 1972ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1974ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 1975ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1978ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 1989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1990ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 1991ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 1993ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1997ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 1998ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2000ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2001ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2004ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_cancel_all - Device iterated cancel all function 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_cancel_all(struct scsi_device *sdev, void *data) 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2040ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2041ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2042ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2044ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2050ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2052ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2053ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2056ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2088ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2094ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2095ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2096ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2097ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 21503e3399467d4c4aefe6a24225b5b277cf7d6e58a7Brian King ibmvfc_log(vhost, 3, "%s event received. scsi_id: %lx, wwpn: %lx," 21513e3399467d4c4aefe6a24225b5b277cf7d6e58a7Brian King " node_name: %lx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_UP: 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2157cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 1); 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2161cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 1); 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_DOMAIN: 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reinit_host(vhost); 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown async event received: %ld\n", crq->event); 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2207cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2213cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Returned correlation_token 0x%08lx is invalid!\n", 2261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Received duplicate correlation_token 0x%08lx!\n", 2267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE) 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2331ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2332ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2333ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2334ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2335ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2336ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2337ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2338ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2339ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2340ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2341ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2342ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2343ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2344ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2345ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2346ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2347ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2348ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2349ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2350ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2351ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2352ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_partition_name = { 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "partition_name", 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_partition_name, 2439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_device_name = { 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "device_name", 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_device_name, 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_loc_code = { 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "port_loc_code", 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_loc_code, 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_drc_name = { 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "drc_name", 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_drc_name, 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_npiv_version = { 2504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "npiv_version", 2506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_npiv_version, 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_log_level_attr = { 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "log_level", 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO | S_IWUSR, 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_log_level, 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .store = ibmvfc_store_log_level 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_partition_name, 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_device_name, 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_loc_code, 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_drc_name, 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_npiv_version, 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_log_level_attr, 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2631ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the CRQ */ 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_enable_interrupts(vdev); 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 27284081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 2729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return IRQ_HANDLED; 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 27601c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Process Login succeeded\n"); 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 0; 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT); 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 2795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->status, rsp->error, status); 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 279910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 280010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 2858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.roles = FC_PORT_ROLE_FCP_TARGET; 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 289510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 289610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3015989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3016989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3017989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3018989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3019989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3020989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3021989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3022989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3023989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3024989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3025989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3026989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3027989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3028989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3029989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3030989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3031989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3032989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3033989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3034989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3035989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3036989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3037989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3038989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3039989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3040989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3041989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3042989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3043989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3044989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3045989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3046989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3047989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3048989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3049989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3050989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3051989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3052989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3053989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3054989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3055989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 3056989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt->need_login = 1; 3057989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3058989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3059989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3060989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3061989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 3062989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt->need_login = 1; 3063989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3064989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3065989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3066989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3067989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3068989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3069989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3070989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3071989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3072989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3073989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3074989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3075989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3076989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3077989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3078989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3079989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3080989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3081989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3082989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3083989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3084989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3085989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3086989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3087989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3088989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3089989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3090989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3091989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3092989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3093989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3094989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3095989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3096989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3097989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3098989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3099989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3100989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3101989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3102989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3103989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3104989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3105989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3106989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3107989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3108989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3109989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3110989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3111989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3112989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3113989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3114989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3115989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3116989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3117989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3118989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3119989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3120989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3121989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3122989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3123989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3124989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3125989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3126989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3127989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3128989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3129989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 3130989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3131989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3132989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3133989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3134989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3135989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3136989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3137989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3138989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3139989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3140989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3141989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3142989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3143989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3144989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3145989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3146989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3147989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3167989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3168989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 318810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 318910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_KERNEL); 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Target allocation failure for scsi id %08lx\n", 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 3267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 3305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Discover Targets failed: %s (%x:%x)\n", 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "NPIV Login failed: %s (%x:%x)\n", 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 3511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 352010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 3531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 3543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 3549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 3551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 3554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 3556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 3557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 3558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 3559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 3560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 3561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 3562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 3563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 3567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 3571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Adding rport\n"); 3577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 3578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = rport; 3580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 3582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 3583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 3584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 358552d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 3586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 3587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 3588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 3589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 3590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 3591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 3592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 3594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 3599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 3603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 3609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 3611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 36171c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 36181c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 36191c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 36201c41fa8288277e76785acb50f52bb2f39509f903Brian King ssleep(5); 36211c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 36221c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 36231c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 3624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 3628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 3629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 3639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 3640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 364210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 3652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 365810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 365910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 366010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD); 366110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->init_retries = 0; 366210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 366310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King scsi_unblock_requests(vhost->host); 366410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 366510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 366610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 366710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 366810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 3669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 3673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 3681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 369110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 369210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 3693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) { 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_tgt_add_rport(tgt); 3699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3703915be024414c52e311f795566ac938223ba3c847Brian King if (vhost->reinit && !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 0; 3705915be024414c52e311f795566ac938223ba3c847Brian King scsi_block_requests(vhost->host); 3706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37768d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 3780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 3787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 38698d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 3940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 3946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 3950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 3951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 3999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 40512d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 40522d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 40532d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 407239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 407339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 407439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 407539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 407639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 407739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 407839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 407939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 408039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 408139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 408239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 408339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 408439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 408539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 409639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 4110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4176