ibmvfc.c revision 072b91f9c6510d0ec4a49d07dbc318760c7da7b3
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 if (!vfc_cmd->status) { 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RESID_OVER) 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_OK << 16); 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING); 526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost) 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) { 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_host - Reset the connection to the server 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++vhost->init_retries > IBMVFC_MAX_INIT_RETRIES) { 844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (vhost->init_retries == IBMVFC_MAX_INIT_RETRIES) 848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_find_target - Find the specified scsi_target (no locking) 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_target *__ibmvfc_find_target(struct scsi_target *starget) 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->target_id == starget->id) 871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_find_target - Find the specified scsi_target 877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_target *ibmvfc_find_target(struct scsi_target *starget) 883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt = __ibmvfc_find_target(starget); 890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port speed: %ld Gbit\n", 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = ibmvfc_find_target(starget); 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = ibmvfc_find_target(starget); 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = ibmvfc_find_target(starget); 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 1039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (vhost->state == IBMVFC_ACTIVE || 1040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_HOST_OFFLINE || 1041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_LINK_DEAD), 1042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->flags = IBMVFC_CLIENT_MIGRATED; 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.len = vhost->async_crq.size; 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->shost_gendev.bus_id, IBMVFC_MAX_NAME); 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = location ? location : vhost->dev->bus_id; 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!logerr && (vhost->log_level <= IBMVFC_DEFAULT_LOG_LEVEL)) 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_len = 0; 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sense_len = rsp->fcp_sense_len; 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len) 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rport->supported_classes & FC_COS_CLASS3) && 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (fc_host_supported_classes(vhost->host) & FC_COS_CLASS3)) 1536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags = IBMVFC_CLASS_3_ERR; 1537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 1693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 1713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 1723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 1727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_iu.cmd.status) { 1730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 1734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 1741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 1750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 1751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 1752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 1754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 1755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 1760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 1764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 1766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 1769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 1783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 1792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 1794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 1796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 1797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 1798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 1799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->my_cancel_key = (IBMVFC_TMF_CANCEL_KEY | (unsigned long)sdev->hostdata); 1801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 1803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 1811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 1815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 1818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 1823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 1824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 1828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 1833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 1834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 1839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 1841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 1842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 1843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cancel_rc = ibmvfc_cancel_all(cmd->device, IBMVFC_TMF_ABORT_TASK_SET); 1848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King abort_rc = ibmvfc_abort_task_set(cmd->device); 1849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cancel_rc && !abort_rc) { 1851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) { 1853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == cmd->device) 1854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, DID_ABORT); 1855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SUCCESS; 1859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return FAILED; 1863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 1867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 1868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 1873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 1875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 1876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 1877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cancel_rc = ibmvfc_cancel_all(cmd->device, IBMVFC_TMF_LUN_RESET); 1882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King reset_rc = ibmvfc_reset_device(cmd->device, IBMVFC_LUN_RESET, "LUN"); 1883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cancel_rc && !reset_rc) { 1885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) { 1887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == cmd->device) 1888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, DID_ABORT); 1889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SUCCESS; 1893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return FAILED; 1897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_cancel_all - Device iterated cancel all function 1901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 1902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 1903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_cancel_all(struct scsi_device *sdev, void *data) 1906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 1908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 1909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 1913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 1914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 1915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 1918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 1920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 1921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 1925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 1926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 1929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 1931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 1933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = scsi_target(cmd->device); 1934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 1935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 1936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 1937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 1941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 1942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King reset_rc = ibmvfc_reset_device(cmd->device, IBMVFC_TARGET_RESET, "target"); 1943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cancel_rc && !reset_rc) { 1945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) { 1947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && scsi_target(evt->cmnd->device) == starget) 1948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, DID_ABORT); 1949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SUCCESS; 1953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return FAILED; 1957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 1961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 1962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 1965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 1968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 1970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 1971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 1972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 1976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 1977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 1982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 1984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 1987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 1988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 1989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all); 1993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 1994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cancel_rc && !abort_rc) { 1996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 1997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) { 1998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && scsi_target(evt->cmnd->device) == starget) 1999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, DID_ABORT); 2000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_target_unblock(&rport->dev); 2006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 2056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 2, "%s event received\n", desc); 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_UP: 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_host(vhost); 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_host(vhost); 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_DOMAIN: 2072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 2076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reinit_host(vhost); 2077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown async event received: %ld\n", crq->event); 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_host(vhost); 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_host(vhost); 2120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 2127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Returned correlation_token 0x%08lx is invalid!\n", 2167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Received duplicate correlation_token 0x%08lx!\n", 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state != IBMVFC_NO_CRQ && vhost->action == IBMVFC_HOST_ACTION_NONE) 2205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_partition_name = { 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "partition_name", 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_partition_name, 2323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_device_name = { 2336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "device_name", 2338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_device_name, 2341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_loc_code = { 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "port_loc_code", 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_loc_code, 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_drc_name = { 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "drc_name", 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_drc_name, 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_host_npiv_version = { 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "npiv_version", 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_host_npiv_version, 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute ibmvfc_log_level_attr = { 2440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "log_level", 2442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO | S_IWUSR, 2443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show = ibmvfc_show_log_level, 2445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .store = ibmvfc_store_log_level 2446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_partition_name, 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_device_name, 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_loc_code, 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_drc_name, 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_host_npiv_version, 2500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_log_level_attr, 2501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 2537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 2538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 2540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 2542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 2543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 2580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 2582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 2583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 2585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the CRQ */ 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_enable_interrupts(vdev); 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return IRQ_HANDLED; 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 2636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 2638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++tgt->init_retries > IBMVFC_MAX_INIT_RETRIES) { 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_tgt - Free memory allocated for a target 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kref: kref struct 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(tgt); 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Process Login succeeded\n"); 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 0; 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_ADD_RPORT); 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 2689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 2690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->status, rsp->error, status); 2691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 2709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 2723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 2724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 2725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 2726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 2728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 2729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 2730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.roles = FC_PORT_ROLE_FCP_TARGET; 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 2781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 2782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 2783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 2784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 2814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 2816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 2817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 2820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 2821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 2857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 2863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 2871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 2875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 2877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 2887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 2889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 2890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 2891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 2892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 2893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 2894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 2910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 2921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 2922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 2923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 2924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 2929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 2933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 2934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 2935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 2936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 2938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 2939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 2953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 2957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 2959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_KERNEL); 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Target allocation failure for scsi id %08lx\n", 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 3058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Discover Targets failed: %s (%x:%x)\n", 3067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 3120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "NPIV Login failed: %s (%x:%x)\n", 3127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 3129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 3214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->async_crq.cur = 0; 3215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 3225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 3231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 3236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 3245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 3263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 3266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 3275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 3285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 3297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 3303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 3305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 3308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 3310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 3311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 3312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 3313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 3314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 3315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 3316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 3317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 3321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 3325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Adding rport\n"); 3331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 3332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = rport; 3334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 3336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 3337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 3338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 3339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 3340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 3341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 3342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 3343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 3344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 3345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 3347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 3352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 3356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 3362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 3364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 3370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step(vhost); 3371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 3375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 3376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 3386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 3387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 3389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 3398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_discover_targets; 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 3410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) { 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_ADD); 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->init_retries = 0; 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_ADD: 3438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_ADD_RPORT) { 3440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_tgt_add_rport(tgt); 3442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->reinit) { 3457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 0; 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 3462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 3512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 3516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 3520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 3522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 3525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 3526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 3527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (dma_mapping_error(crq->msg_token)) 3529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 3530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 3532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 3533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 3535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 3536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 3537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 3539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 3540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 3541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 3542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 3543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 3546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 3548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 3549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 3553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 3554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 3555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 3558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 3562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 3563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 3564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 3565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 3566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 3567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 3568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 3569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 3570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 3574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 3578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 3580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 3585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 3587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 3589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 3592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 3599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 3605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 3607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 3608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 3611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 3612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 3613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 3614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 3617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 3618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 3619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 3620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (dma_mapping_error(async_q->msg_token)) { 3622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 3623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 3624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 3627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 3628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 3629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 3631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 3632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 3633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 3636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 3637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 3639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 3640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 3641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 3644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 3645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 3646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 3648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 3649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 3650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 3653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 3654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 3656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 3657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->tgt_pool = mempool_create_kzalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 3659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 3660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 3662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 3663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 3664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 3670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 3671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 3672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 3673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 3674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 3675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 3676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 3677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 3681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 3682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 3691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 3692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 3693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 3698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 3703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 3706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 3707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 3708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 3709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 3712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 3713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 3714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 3715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 3716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 3717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 3718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 3720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 3728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 3729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 3730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 3731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 3733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 3734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 3736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 3737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 3739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 3740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 3741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 3742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 3745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 3746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 3747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 3750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 3751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 3752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 3755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 3756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 3758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 3759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 3760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 3761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 3764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 3765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 3766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 3767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 3769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 3770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 3773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 3774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 3775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 3776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 3777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 3778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 3779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 3780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 3781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 3782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 3783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 3784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 3785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 3835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 3839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 3892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 3899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 3901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 3902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 3904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 3906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 3907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 3911