ibmvfc.c revision 4081b77c3a86151d2eaeed9d568a34dd0982ed52
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" }, 124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ((!fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 49910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5182d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5192d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5202d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5212d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 553cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King * @relogin: is this a re-login? 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 558cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost, int relogin) 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) { 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 572cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King if (!relogin) { 573cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 574cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King vhost->async_crq.cur = 0; 575cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King } 576cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 762ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 763ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 764ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_host - Reset the connection to the server 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) { 848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (vhost->init_retries == IBMVFC_MAX_INIT_RETRIES) 852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 861b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 867b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 874b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 875b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 877b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 882b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 888b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 895b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port speed: %ld Gbit\n", 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 9720ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 9730ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 9740ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1000b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1001b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1002b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1003b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1004b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1005b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1006b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1007b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1008b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1009b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1010b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1019b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1021b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1022b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1034b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1036b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1037b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1049b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1051b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1052b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 10653eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 10663eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 10673eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 10683eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->flags = IBMVFC_CLIENT_MIGRATED; 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 114352d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->shost_gendev.bus_id, IBMVFC_MAX_NAME); 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = location ? location : vhost->dev->bus_id; 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1252ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14350ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 14582bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 14592bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 14762bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 147950119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 148050119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 148150119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1493ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1494ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1495ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rport->supported_classes & FC_COS_CLASS3) && 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3)) 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags = IBMVFC_CLASS_3_ERR; 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 163450ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 1695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 1696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 1698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 1699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 1704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 1727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 1747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 1757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 1761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 1768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 1775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 1784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 1785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 1786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 1788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 1789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 1794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1796ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 1797ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 1798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 1799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 1801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 1804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 1818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 1827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 1829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 1831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 1832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 1833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 1834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1835ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 1836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 1838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 1846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 1850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 1853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 1858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 1859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 1863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1867ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 1868ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1869ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 1870ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1871ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1872ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 1873ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1874ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 1875ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1876ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 1877ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1878ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1879ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1880ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1881ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1882ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 1883ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1884ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 1885ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1886ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1887ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 1888ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1889ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 1890ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1891ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 1892ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1893ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1894ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1895ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1896ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1897ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 1898ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 1899ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 1900ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 1901ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1902ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1903ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 1904ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1905ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 1906ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 1907ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1908ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 1909ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 1910ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 1911ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 1912ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 1913ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1914ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 1915ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 1916ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1917ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1918ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1919ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1920ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 1921ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1922ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1923ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1924ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1925ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1926ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 1927ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 1928ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1929ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 1930ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1931ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1932ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1933ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1934ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1935ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1936ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1937ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1938ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1939ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 1940ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 1941ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1942ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 1943ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1944ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1945ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 1946ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1947ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 1948ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 1949ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1950ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1951ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 1953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 1954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 1959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1960ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 1961ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 1963ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 1964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1967ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 1968ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1970ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 1971ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 1972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1974ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 1975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1986ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 1987ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 1989ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 1990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1993ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 1994ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1996ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 1997ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2000ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_cancel_all - Device iterated cancel all function 2005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_cancel_all(struct scsi_device *sdev, void *data) 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2036ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2037ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2038ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2040ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2046ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2048ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2049ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2052ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2084ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 2088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2090ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2091ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2092ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2093ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 21463e3399467d4c4aefe6a24225b5b277cf7d6e58a7Brian King ibmvfc_log(vhost, 3, "%s event received. scsi_id: %lx, wwpn: %lx," 21473e3399467d4c4aefe6a24225b5b277cf7d6e58a7Brian King " node_name: %lx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_UP: 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2153cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 1); 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2157cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 1); 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_DOMAIN: 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reinit_host(vhost); 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown async event received: %ld\n", crq->event); 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2203cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2209cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King ibmvfc_init_host(vhost, 0); 2210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Returned correlation_token 0x%08lx is invalid!\n", 2257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Received duplicate correlation_token 0x%08lx!\n", 2263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE) 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2327ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2328ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2329ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2330ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2331ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2332ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2333ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2334ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2335ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2336ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2337ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2338ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2339ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2340ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2341ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2342ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2343ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2344ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2345ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2346ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2347ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2348ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_partition_name = { 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "partition_name", 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_partition_name, 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_device_name = { 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "device_name", 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_device_name, 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_loc_code = { 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "port_loc_code", 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_loc_code, 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_drc_name = { 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "drc_name", 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_drc_name, 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_npiv_version = { 2500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "npiv_version", 2502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_npiv_version, 2505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_log_level_attr = { 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "log_level", 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO | S_IWUSR, 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_log_level, 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .store = ibmvfc_store_log_level 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_partition_name, 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_device_name, 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_loc_code, 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_drc_name, 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_npiv_version, 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_log_level_attr, 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2627ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the CRQ */ 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 2714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_enable_interrupts(vdev); 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 27244081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 2725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return IRQ_HANDLED; 2731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++tgt->init_retries > IBMVFC_MAX_INIT_RETRIES) { 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Process Login succeeded\n"); 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 0; 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT); 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->status, rsp->error, status); 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 279510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 279610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.roles = FC_PORT_ROLE_FCP_TARGET; 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 289110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 289210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3011989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3012989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3013989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3014989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3015989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3016989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3017989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3018989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3019989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3020989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3021989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3022989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3023989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3024989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3025989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3026989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3027989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3028989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3029989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3030989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3031989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3032989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3033989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3034989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3035989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3036989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3037989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3038989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3039989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3040989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3041989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3042989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3043989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3044989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3045989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3046989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3047989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3048989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3049989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3050989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3051989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 3052989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt->need_login = 1; 3053989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3054989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3055989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3056989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3057989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 3058989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt->need_login = 1; 3059989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3060989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3061989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3062989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3063989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3064989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3065989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3066989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3067989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3068989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3069989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3070989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3071989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3072989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3073989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3074989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3075989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3076989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3077989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3078989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3079989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3080989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3081989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3082989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3083989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3084989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3085989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3086989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3087989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3088989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3089989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3090989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3091989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3092989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3093989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3094989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3095989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3096989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3097989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3098989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3099989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3100989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3101989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3102989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3103989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3104989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3105989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3106989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3107989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3108989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3109989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3110989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3111989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3112989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3113989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3114989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3115989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3116989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3117989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3118989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3119989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3120989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3121989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3122989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3123989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3124989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3125989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 3126989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3127989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3128989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3129989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3130989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3131989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3132989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3133989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3134989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3135989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3136989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3137989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3138989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3139989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3140989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3141989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3142989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3143989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3163989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3164989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 3175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 3176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 3183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 318410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 318510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_KERNEL); 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Target allocation failure for scsi id %08lx\n", 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 3301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Discover Targets failed: %s (%x:%x)\n", 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "NPIV Login failed: %s (%x:%x)\n", 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 351610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 3527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 3539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 3545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 3547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 3550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 3552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 3553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 3554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 3555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 3556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 3557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 3558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 3559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 3563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 3567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Adding rport\n"); 3573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 3574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = rport; 3576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 3578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 3579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 3580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 358152d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 3582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 3583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 3584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 3585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 3586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 3587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 3588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 3590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 3595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 3599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 3605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 3607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 3613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step(vhost); 3614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 3618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 3619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 3629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 3630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 363210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 3642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 364810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 364910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 365010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD); 365110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->init_retries = 0; 365210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 365310e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King scsi_unblock_requests(vhost->host); 365410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 365510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 365610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 365710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 365810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 3659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 3663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 3669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 3671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 368110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 368210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) { 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_tgt_add_rport(tgt); 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3693915be024414c52e311f795566ac938223ba3c847Brian King if (vhost->reinit && !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 0; 3695915be024414c52e311f795566ac938223ba3c847Brian King scsi_block_requests(vhost->host); 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 3711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 3712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 3715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 3717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 3719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 37668d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 3780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 3787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 38598d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 3895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 3911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 3914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 3940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 3945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 3946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 3947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 3950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 3951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 3952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 3953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 3954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 3955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 3956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 3975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 3985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 3993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 3994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 3996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 3997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 3998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 3999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 40412d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 40422d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 40432d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 406239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 406339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 406439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 406539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 406639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 406739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 406839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 406939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 407039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 407139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 407239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 407339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 407439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 407539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 408639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 4100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4166