ibmvfc.c revision 4a5c4a5ed2b8b7fac68368e7ab8cb415dd006418
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) "]"); 78545ef9a2dc1e5ac0463f3754e239ffcc5aaa92e2Brian Kingmodule_param_named(disc_threads, disc_threads, uint, S_IRUGO); 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" }, 104752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_FABRIC_MAPPED, IBMVFC_ENETDOWN, DID_TRANSPORT_DISRUPTED, 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" }, 113497f9c504f76e7a751cd370604e1c8521743746dBrian King { IBMVFC_FABRIC_MAPPED, IBMVFC_LINK_HALTED, DID_REQUEUE, 1, 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" }, 118752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INVALID_PARAMETER, DID_ERROR, 0, 1, "invalid parameter" }, 119752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_MISSING_PARAMETER, DID_ERROR, 0, 1, "missing parameter" }, 120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_HOST_IO_BUS, DID_ERROR, 1, 1, "host I/O bus failure" }, 121752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED, DID_ERROR, 0, 1, "transaction cancelled" }, 122752b32329b48e0b7481e82a5f891aa5bf01f3782Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_TRANS_CANCELLED_IMPLICIT, DID_ERROR, 0, 1, "transaction cancelled implicit" }, 123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_INSUFFICIENT_RESOURCE, DID_REQUEUE, 1, 1, "insufficient resources" }, 124646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King { IBMVFC_VIOS_FAILURE, IBMVFC_PLOGI_REQUIRED, DID_ERROR, 0, 1, "port login required" }, 125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_VIOS_FAILURE, IBMVFC_COMMAND_FAILED, DID_ERROR, 1, 1, "command failed" }, 126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_ELS_CMD_CODE, DID_ERROR, 0, 1, "invalid ELS command code" }, 128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_VERSION, DID_ERROR, 0, 1, "invalid version level" }, 129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_ERROR, DID_ERROR, 1, 1, "logical error" }, 130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_INVALID_CT_IU_SIZE, DID_ERROR, 0, 1, "invalid CT_IU size" }, 131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_LOGICAL_BUSY, DID_REQUEUE, 1, 0, "logical busy" }, 132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_PROTOCOL_ERROR, DID_ERROR, 1, 1, "protocol error" }, 133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_UNABLE_TO_PERFORM_REQ, DID_ERROR, 1, 1, "unable to perform request" }, 134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_NOT_SUPPORTED, DID_ERROR, 0, 0, "command not supported" }, 135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_SERVER_NOT_AVAIL, DID_ERROR, 0, 1, "server not available" }, 136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_CMD_IN_PROGRESS, DID_ERROR, 0, 1, "command already in progress" }, 137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_FAILURE, IBMVFC_VENDOR_SPECIFIC, DID_ERROR, 1, 1, "vendor specific" }, 138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FC_SCSI_ERROR, 0, DID_OK, 1, 0, "SCSI error" }, 140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *); 143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *); 144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *); 145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *); 14679111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *); 147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_error = "unknown error"; 149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_start - Log a start trace entry 153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_start(struct ibmvfc_event *evt) 157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->iu.cmd; 160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->iu.mad_common; 161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry; 162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry = &vhost->trace[vhost->trace_index++]; 164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_START; 168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.start.xfer_len = vfc_cmd->iu.xfer_len; 176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_trc_end - Log an end trace entry 187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_trc_end(struct ibmvfc_event *evt) 191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_mad_common *mad = &evt->xfer_iu->mad_common; 195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_trace_entry *entry = &vhost->trace[vhost->trace_index++]; 196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->evt = evt; 198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->time = jiffies; 199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->fmt = evt->crq.format; 200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->type = IBMVFC_TRC_END; 201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (entry->fmt) { 203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CMD_FORMAT: 204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = vfc_cmd->iu.cdb[0]; 205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->scsi_id = vfc_cmd->tgt_scsi_id; 206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->lun = scsilun_to_int(&vfc_cmd->iu.lun); 207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->tmf_flags = vfc_cmd->iu.tmf_flags; 208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = vfc_cmd->status; 209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.error = vfc_cmd->error; 210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.fcp_rsp_flags = vfc_cmd->rsp.flags; 211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.rsp_code = vfc_cmd->rsp.data.info.rsp_code; 212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.scsi_status = vfc_cmd->rsp.scsi_status; 213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FORMAT: 215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->op_code = mad->opcode; 216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King entry->u.end.status = mad->status; 217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#else 225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_start(evt) do { } while (0) 226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#define ibmvfc_trc_end(evt) do { } while (0) 227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_index - Find the index into cmd_status for the fcp response 231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * index into cmd_status / -EINVAL on failure 236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_index(u16 status, u16 error) 238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(cmd_status); i++) 242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((cmd_status[i].status & status) == cmd_status[i].status && 243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmd_status[i].error == error) 244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return i; 245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EINVAL; 247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_cmd_error - Find the error description for the fcp response 251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error description string 256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_cmd_error(u16 status, u16 error) 258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].name; 262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_error; 263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_err_result - Find the scsi status to return for the fcp response 267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: ibmvfc command struct 268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SCSI result value to return for completed command 271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_get_err_result(struct ibmvfc_cmd *vfc_cmd) 273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int err; 275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int fc_rsp_len = rsp->fcp_rsp_len; 277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->flags & FCP_RSP_LEN_VALID) && 2794a2837d4fcaf8a2c2ad61523287073d0c14b9ed0Brian King ((fc_rsp_len && fc_rsp_len != 4 && fc_rsp_len != 8) || 280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->data.info.rsp_code)) 281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return DID_ERROR << 16; 282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (err >= 0) 285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (cmd_status[err].result << 16); 286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp->scsi_status | (DID_ERROR << 16); 287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_cmd - Determine if error status is retryable 291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: status / error class 292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error: error 293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if error should be retried / 0 if it should not 296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_retry_cmd(u16 status, u16 error) 298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = ibmvfc_get_err_index(status, error); 300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc >= 0) 302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return cmd_status[rc].retry; 303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_explain = "unknown fc explain"; 307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ls_explain [] = { 312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "service parameter error - options" }, 314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "service parameter error - initiator control" }, 315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x05, "service parameter error - recipient control" }, 316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "service parameter error - received data field size" }, 317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "service parameter error - concurrent seq" }, 318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0B, "service parameter error - credit" }, 319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0D, "invalid N_Port/F_Port_Name" }, 320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0E, "invalid node/Fabric Name" }, 321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0F, "invalid common service parameters" }, 322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x11, "invalid association header" }, 323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x13, "association header required" }, 324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x15, "invalid originator S_ID" }, 325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x17, "invalid OX_ID-RX-ID combination" }, 326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x19, "command (request) already in progress" }, 327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1E, "N_Port Login requested" }, 328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x1F, "Invalid N_Port_ID" }, 329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 fc_explain; 333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} gs_explain [] = { 335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x00, "no additional explanation" }, 336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x01, "port identifier not registered" }, 337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x02, "port name not registered" }, 338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x03, "node name not registered" }, 339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x04, "class of service not registered" }, 340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x06, "initial process associator not registered" }, 341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x07, "FC-4 TYPEs not registered" }, 342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x08, "symbolic port name not registered" }, 343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x09, "symbolic node name not registered" }, 344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0x0A, "port type not registered" }, 345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF0, "authorization exception" }, 346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF1, "authentication exception" }, 347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF2, "data base full" }, 348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF3, "data base empty" }, 349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF4, "processing request" }, 350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF5, "unable to verify connection" }, 351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { 0xF6, "devices not in a common zone" }, 352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ls_explain - Return the FC Explain description text 356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ls_explain(u16 status) 362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ls_explain); i++) 366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ls_explain[i].fc_explain == status) 367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ls_explain[i].name; 368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_gs_explain - Return the FC Explain description text 374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Explain status 375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_gs_explain(u16 status) 380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(gs_explain); i++) 384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (gs_explain[i].fc_explain == status) 385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return gs_explain[i].name; 386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_explain; 388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_fc_type fc_type; 392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *name; 393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} fc_type [] = { 394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_REJECT, "fabric reject" }, 395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_REJECT, "port reject" }, 396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_LS_REJECT, "ELS reject" }, 397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_FABRIC_BUSY, "fabric busy" }, 398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_PORT_BUSY, "port busy" }, 399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_BASIC_REJECT, "basic reject" }, 400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_fc_type = "unknown fc type"; 403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_fc_type - Return the FC Type description text 406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @status: FC Type error status 407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * error string 410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_fc_type(u16 status) 412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(fc_type); i++) 416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_type[i].fc_type == status) 417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return fc_type[i].name; 418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_fc_type; 420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_tgt_action - Set the next init action for the target 424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_tgt_action(struct ibmvfc_target *tgt, 429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_target_action action) 430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tgt->action) { 432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_TGT_ACTION_DEL_RPORT: 433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 43543c8da907ccc656935d1085701f4db83385d8a59Brian King if (action == IBMVFC_TGT_ACTION_DEL_RPORT) 43643c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action = action; 438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_state - Set the state for the host 444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: state to set host to 446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if state changed / non-zero if not changed 449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_set_host_state(struct ibmvfc_host *vhost, 451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = 0; 454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = -EINVAL; 458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = state; 461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_host_action - Set the next init action for the host 469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @action: action to perform 471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_host_action(struct ibmvfc_host *vhost, 474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_action action) 475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (action) { 477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) 479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 48179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 48279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->action == IBMVFC_HOST_ACTION_LOGO) 48379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action = action; 48479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT) 487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 49343c8da907ccc656935d1085701f4db83385d8a59Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_ALLOC_TGTS) 502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 50479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 50810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->action = action; 512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reinit_host - Re-start host initialization (no NPIV Login) 518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reinit_host(struct ibmvfc_host *vhost) 524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_NONE) { 5262d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 5272d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King scsi_block_requests(vhost->host); 5282d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 5292d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King } 530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_link_down - Handle a link down event from the adapter 538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @state: ibmvfc host state to enter 540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_link_down(struct ibmvfc_host *vhost, 543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_host_state state) 544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_state(vhost, state); 552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKDOWN; 554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_host - Start host initialization 560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 565861890c62d46bd29c73d75fc907aeffd1c4eee06Brian Kingstatic void ibmvfc_init_host(struct ibmvfc_host *vhost) 566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 5701c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 579861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King memset(vhost->async_crq.msgs, 0, PAGE_SIZE); 580861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King vhost->async_crq.cur = 0; 581cf6f10d794ab4a9bd84fce345c3947588670d5f5Brian King 582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 5835e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->job_step = ibmvfc_npiv_login; 587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq - Send a CRQ 593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word1: the first 64 bits of the data 595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @word2: the second 64 bits of the data 596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq(struct ibmvfc_host *vhost, u64 word1, u64 word2) 601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2); 604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init - Send a CRQ init message 608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init(struct ibmvfc_host *vhost) 614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init\n"); 616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC001000000000000LL, 0); 617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_crq_init_complete - Send a CRQ init complete message 621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_crq_init_complete(struct ibmvfc_host *vhost) 627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sending CRQ init complete\n"); 629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_crq(vhost, 0xC002000000000000LL, 0); 630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_release_crq_queue - Deallocates data and unregisters CRQ 634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Frees irq, deallocates a page for messages, unmaps dma, and unregisters 637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_release_crq_queue(struct ibmvfc_host *vhost) 640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Releasing CRQ\n"); 646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_irq(vdev->irq, vhost); 647039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 65379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reenable_crq_queue - reenables the CRQ 660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost) 666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Re-enable the CRQ */ 671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address); 673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc)); 674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc); 677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_crq - resets a crq after a failure 683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_crq(struct ibmvfc_host *vhost) 689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Close the CRQ */ 695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 70079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Clean out the queue */ 704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(crq->msgs, 0, PAGE_SIZE); 705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* And re-open it again */ 708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Adapter is good, but other end is not ready */ 713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Partner adapter not ready\n"); 714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc != 0) 715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc); 716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_valid_event - Determines if event is valid. 722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @pool: event_pool that contains the event 723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be checked for validity 724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if event is valid / 0 if event is not valid 727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_valid_event(struct ibmvfc_event_pool *pool, 729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt) 730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = evt - pool->events; 732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index < 0 || index >= pool->size) /* outside of bounds */ 733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt != pool->events + index) /* unaligned */ 735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event - Free the specified event 741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc_event to be freed 742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event(struct ibmvfc_event *evt) 745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(!ibmvfc_valid_event(pool, evt)); 750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_inc_return(&evt->free) != 1); 751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_eh_done - EH done function for queuecommand commands 756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This function does not setup any error status, that must be done 759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * before this function gets called. 760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_eh_done(struct ibmvfc_event *evt) 762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 770ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 771ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 772ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_fail_request - Fail request with specified error code 778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail request with 780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_fail_request(struct ibmvfc_event *evt, int error_code) 785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = (error_code << 16); 788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_DRIVER_FAILED; 791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_purge_requests - Our virtual adapter just shut down. Purge any sent requests 800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @error_code: error code to fail requests with 802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_purge_requests(struct ibmvfc_host *vhost, int error_code) 807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *pos; 809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Purging all requests\n"); 811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry_safe(evt, pos, &vhost->sent, queue) 812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_fail_request(evt, error_code); 813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 81679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_hard_reset_host - Reset the connection to the server by breaking the CRQ 817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 81979111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_hard_reset_host(struct ibmvfc_host *vhost) 820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_block_requests(vhost->host); 824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost)) || 827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) { 828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset rc=%d\n", rc); 829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 83579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * __ibmvfc_reset_host - Reset the connection to the server (no locking) 836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host to reset 837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 83879111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void __ibmvfc_reset_host(struct ibmvfc_host *vhost) 83979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 84079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (vhost->logged_in && vhost->action != IBMVFC_HOST_ACTION_LOGO_WAIT && 84179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King !ibmvfc_set_host_state(vhost, IBMVFC_INITIALIZING)) { 84279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King scsi_block_requests(vhost->host); 84379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO); 84479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step = ibmvfc_npiv_logout; 84579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King wake_up(&vhost->work_wait_q); 84679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } else 84779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 84879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 84979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 85079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 85179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_reset_host - Reset the connection to the server 85279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 85379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_reset_host(struct ibmvfc_host *vhost) 855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_host_init - Retry host initialization if allowed 865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 8677d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if init will be retried / 0 if not 8687d0e462247241b8ec2d377306203b58c7f423553Brian King * 869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 8707d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_host_init(struct ibmvfc_host *vhost) 871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 8727d0e462247241b8ec2d377306203b58c7f423553Brian King int retry = 0; 8737d0e462247241b8ec2d377306203b58c7f423553Brian King 874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_INIT_WAIT) { 8751c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 1; 8761c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++vhost->init_retries > IBMVFC_MAX_HOST_INIT_RETRIES) { 877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, 878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Host initialization retries exceeded. Taking adapter offline\n"); 879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 8801c41fa8288277e76785acb50f52bb2f39509f903Brian King } else if (vhost->init_retries == IBMVFC_MAX_HOST_INIT_RETRIES) 881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King __ibmvfc_reset_host(vhost); 8827d0e462247241b8ec2d377306203b58c7f423553Brian King else { 883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 8847d0e462247241b8ec2d377306203b58c7f423553Brian King retry = 1; 8857d0e462247241b8ec2d377306203b58c7f423553Brian King } 886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 8897d0e462247241b8ec2d377306203b58c7f423553Brian King return retry; 890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 893b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * __ibmvfc_get_target - Find the specified scsi_target (no locking) 894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 898072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 899b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *__ibmvfc_get_target(struct scsi_target *starget) 900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 906b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt->target_id == starget->id) { 907b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_get(&tgt->kref); 908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 909b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King } 910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return NULL; 911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 914b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_get_target - Find the specified scsi_target 915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_target struct / NULL if not found 919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 920b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic struct ibmvfc_target *ibmvfc_get_target(struct scsi_target *starget) 921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 927b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King tgt = __ibmvfc_get_target(starget); 928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tgt; 930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_speed - Get host port speed 934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_speed(struct Scsi_Host *shost) 940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->login_buf->resp.link_speed / 100) { 947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 1: 948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 950072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 2: 951072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 952072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 953072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 4: 954072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 955072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 956072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 8: 957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 10: 960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case 16: 963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 966775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "Unknown port speed: %lld Gbit\n", 967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.link_speed / 100); 968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_host_port_state - Get host port state 978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_host_port_state(struct Scsi_Host *shost) 984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 1000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_BLOCKED; 1003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 10040ae808e02e000058cf65a47662c187dc061bcfd3Brian King case IBMVFC_NO_CRQ: 10050ae808e02e000058cf65a47662c187dc061bcfd3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 10060ae808e02e000058cf65a47662c187dc061bcfd3Brian King break; 1007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 1008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log(vhost, 3, "Unknown port state: %d\n", vhost->state); 1009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 1010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 1013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_rport_dev_loss_tmo - Set rport's device loss timeout 1017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 1018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout value 1019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 1024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) 1026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = timeout; 1027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = 1; 1029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1032b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * ibmvfc_release_tgt - Free memory allocated for a target 1033b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * @kref: kref struct 1034b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King * 1035b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King **/ 1036b3c10489cb464b12a74dda65f826433f71f2c2e2Brian Kingstatic void ibmvfc_release_tgt(struct kref *kref) 1037b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King{ 1038b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = container_of(kref, struct ibmvfc_target, kref); 1039b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kfree(tgt); 1040b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King} 1041b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King 1042b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King/** 1043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_node_name - Get SCSI target's node name 1044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_node_name(struct scsi_target *starget) 1050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1051b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.node_name : 0; 1053b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1054b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_name - Get SCSI target's port name 1059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_name(struct scsi_target *starget) 1065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1066b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_name(starget) = tgt ? tgt->ids.port_name : 0; 1068b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1069b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_starget_port_id - Get SCSI target's port ID 1074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @starget: scsi target struct 1075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_get_starget_port_id(struct scsi_target *starget) 1080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1081b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King struct ibmvfc_target *tgt = ibmvfc_get_target(starget); 1082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_starget_port_id(starget) = tgt ? tgt->scsi_id : -1; 1083b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King if (tgt) 1084b3c10489cb464b12a74dda65f826433f71f2c2e2Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 1085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_wait_while_resetting - Wait while the host resets 1089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_wait_while_resetting(struct ibmvfc_host *vhost) 1095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long timeout = wait_event_timeout(vhost->init_wait_q, 10973eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King ((vhost->state == IBMVFC_ACTIVE || 10983eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_HOST_OFFLINE || 10993eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->state == IBMVFC_LINK_DEAD) && 11003eddc569770a76f2ca65621cdde3c0a2552b5b0cBrian King vhost->action == IBMVFC_HOST_ACTION_NONE), 1101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (init_timeout * HZ)); 1102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return timeout ? 0 : -EIO; 1104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_issue_fc_host_lip - Re-initiate link initialization 1108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 1109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_issue_fc_host_lip(struct Scsi_Host *shost) 1114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 1116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Initiating host LIP. Resetting connection\n"); 1118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_wait_while_resetting(vhost); 1120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_gather_partition_info - Gather info about the LPAR 1124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_gather_partition_info(struct ibmvfc_host *vhost) 1129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *rootdn; 1131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *name; 1132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const unsigned int *num; 1133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rootdn = of_find_node_by_path("/"); 1135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rootdn) 1136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King name = of_get_property(rootdn, "ibm,partition-name", NULL); 1139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (name) 1140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); 1141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King num = of_get_property(rootdn, "ibm,partition-no", NULL); 1142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (num) 1143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = *num; 1144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King of_node_put(rootdn); 1145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_set_login_info - Setup info for NPIV login 1149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 1152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 1153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_set_login_info(struct ibmvfc_host *vhost) 1155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login *login_info = &vhost->login_info; 1157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_node *of_node = vhost->dev->archdata.of_node; 1158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *location; 1159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(login_info, 0, sizeof(*login_info)); 1161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->ostype = IBMVFC_OS_LINUX; 1163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_dma_len = IBMVFC_MAX_SECTORS << 9; 1164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_payload = sizeof(struct ibmvfc_fcp_cmd_iu); 1165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_response = sizeof(struct ibmvfc_fcp_rsp); 1166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->partition_num = vhost->partition_number; 1167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->vfc_frame_version = 1; 1168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->fcp_version = 3; 1169497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags = IBMVFC_FLUSH_ON_HALT; 1170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->client_migrated) 1171497f9c504f76e7a751cd370604e1c8521743746dBrian King login_info->flags |= IBMVFC_CLIENT_MIGRATED; 1172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->max_cmds = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->capabilities = IBMVFC_CAN_MIGRATE; 1175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King login_info->async.va = vhost->async_crq.msg_token; 117652d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King login_info->async.len = vhost->async_crq.size * sizeof(*vhost->async_crq.msgs); 1177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME); 1178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->device_name, 117971610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME); 1180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King location = of_get_property(of_node, "ibm,loc-code", NULL); 118271610f55fa4db63dbf5385929a47c9fb2451f332Kay Sievers location = location ? location : dev_name(vhost->dev); 1183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); 1184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event_pool - Allocates and initializes the event pool for a host 1188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns zero on success. 1191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_event_pool(struct ibmvfc_host *vhost) 1193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size = max_requests + IBMVFC_NUM_INTERNAL_REQ; 1199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events = kcalloc(pool->size, sizeof(*pool->events), GFP_KERNEL); 1200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->events) 1201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage = dma_alloc_coherent(vhost->dev, 1204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &pool->iu_token, 0); 1206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!pool->iu_storage) { 1208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = &pool->events[i]; 1214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 1); 1215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.valid = 0x80; 1216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.ioba = pool->iu_token + (sizeof(*evt->xfer_iu) * i); 1217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu = pool->iu_storage + i; 1218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->vhost = vhost; 1219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = NULL; 1220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->free); 1221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_event_pool - Frees memory of the event pool of a host 1229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host who owns the event pool 1230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_event_pool(struct ibmvfc_host *vhost) 1233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1235072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event_pool *pool = &vhost->pool; 1236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < pool->size; ++i) { 1239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&pool->events[i].queue); 1240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(atomic_read(&pool->events[i].free) != 1); 1241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (pool->events[i].ext_list) 1242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_free(vhost->sg_pool, 1243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list, 1244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->events[i].ext_list_token); 1245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(pool->events); 1248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, 1249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->size * sizeof(*pool->iu_storage), 1250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King pool->iu_storage, pool->iu_token); 1251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 1252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_event - Gets the next free event in pool 1256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns a free event from the pool. 1259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_event *ibmvfc_get_event(struct ibmvfc_host *vhost) 1261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(list_empty(&vhost->free)); 1265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = list_entry(vhost->free.next, struct ibmvfc_event, queue); 1266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King atomic_set(&evt->free, 0); 1267072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1268072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return evt; 1269072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1270072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1271072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1272072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_event - Initialize fields in an event struct that are always 1273072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * required. 1274072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: The event 1275072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Routine to call when the event is responded to 1276072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @format: SRP or MAD format 1277072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1278072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_event(struct ibmvfc_event *evt, 1279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct ibmvfc_event *), u8 format) 1280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = NULL; 1282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = NULL; 1283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->crq.format = format; 1284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = done; 1285ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_list - Initialize scatterlist 1290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: scsi command struct 1291072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @nseg: number of scatterlist segments 1292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @md: memory descriptor list to initialize 1293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_map_sg_list(struct scsi_cmnd *scmd, int nseg, 1295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *md) 1296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 1298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scatterlist *sg; 1299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_for_each_sg(scmd, sg, nseg, i) { 1301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].va = sg_dma_address(sg); 1302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].len = sg_dma_len(sg); 1303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King md[i].key = 0; 1304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_map_sg_data - Maps dma for a scatterlist and initializes decriptor fields 1309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scmd: Scsi_Cmnd with the scatterlist 1310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vfc_cmd: vfc_cmd that contains the memory descriptor 1312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: device for which to map dma memory 1313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1315072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 1316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_map_sg_data(struct scsi_cmnd *scmd, 1318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, 1319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd, struct device *dev) 1320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int sg_mapped; 1323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct srp_direct_buf *data = &vfc_cmd->ioba; 1324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(dev); 1325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sg_mapped = scsi_dma_map(scmd); 1327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!sg_mapped) { 1328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_NO_MEM_DESC; 1329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else if (unlikely(sg_mapped < 0)) { 1331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, scmd, "Failed to map DMA buffer for command\n"); 1333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sg_mapped; 1334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scmd->sc_data_direction == DMA_TO_DEVICE) { 1337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_WRITE; 1338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_WRDATA; 1339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 1340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_READ; 1341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.add_cdb_len |= IBMVFC_RDDATA; 1342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sg_mapped == 1) { 1345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, data); 1346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->flags |= IBMVFC_SCATTERLIST; 1350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 1352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->ext_list = dma_pool_alloc(vhost->sg_pool, GFP_ATOMIC, 1353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &evt->ext_list_token); 1354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!evt->ext_list) { 135664b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scsi_dma_unmap(scmd); 135764b840dd88eb2054f86c72ed6d989cb8681f0058Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 135864b840dd88eb2054f86c72ed6d989cb8681f0058Brian King scmd_printk(KERN_ERR, scmd, "Can't allocate memory for scatterlist\n"); 1359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 1360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_map_sg_list(scmd, sg_mapped, evt->ext_list); 1364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->va = evt->ext_list_token; 1366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->len = sg_mapped * sizeof(struct srp_direct_buf); 1367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King data->key = 0; 1368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_timeout - Internal command timeout handler 1373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: struct ibmvfc_event that timed out 1374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Called when an internally generated command times out 1376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_timeout(struct ibmvfc_event *evt) 1378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Command timed out (%p). Resetting connection\n", evt); 1381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_reset_host(vhost); 1382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_send_event - Transforms event to u64 array and calls send_crq() 1386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: event to be sent 1387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 1388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @timeout: timeout in seconds - 0 means do not time command 1389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns the value returned from ibmvfc_send_crq(). (Zero for success) 1391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_send_event(struct ibmvfc_event *evt, 1393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost, unsigned long timeout) 1394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u64 *crq_as_u64 = (u64 *) &evt->crq; 1396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Copy the IU into the transfer area */ 1399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->xfer_iu = evt->iu; 1400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->crq.format == IBMVFC_CMD_FORMAT) 1401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->cmd.tag = (u64)evt; 1402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (evt->crq.format == IBMVFC_MAD_FORMAT) 1403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.tag = (u64)evt; 1404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG(); 1406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&evt->queue, &vhost->sent); 1408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_timer(&evt->timer); 1409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (timeout) { 1411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.data = (unsigned long) evt; 1412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.expires = jiffies + (timeout * HZ); 1413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->timer.function = (void (*)(unsigned long))ibmvfc_timeout; 1414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King add_timer(&evt->timer); 1415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1417a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King mb(); 1418a528ab7a324f1dbb3598ae0ecd238ab7dd974294Brian King 1419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_send_crq(vhost, crq_as_u64[0], crq_as_u64[1]))) { 1420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 1421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 1422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* If send_crq returns H_CLOSED, return SCSI_MLQUEUE_HOST_BUSY. 1424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Firmware will send a CRQ with a transport event (0xFF) to 1425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * tell this client what has happened to the transport. This 1426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * will be handled in ibmvfc_handle_crq() 1427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 1428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) { 1429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (printk_ratelimit()) 1430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(vhost->dev, "Send warning. Receive queue closed, will retry.\n"); 1431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) 1432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(evt->cmnd); 1433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Send error (rc=%d)\n", rc); 1438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd) { 1439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd->result = DID_ERROR << 16; 1440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done = ibmvfc_scsi_eh_done; 1441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->xfer_iu->mad_common.status = IBMVFC_MAD_CRQ_ERROR; 1443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 1445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_start(evt); 1447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_error - Log an error for the failed command if appropriate 1453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to log 1454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_error(struct ibmvfc_event *evt) 1457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 1460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 1462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *err = unknown_error; 1463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int index = ibmvfc_get_err_index(vfc_cmd->status, vfc_cmd->error); 1464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int logerr = 0; 1465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (index >= 0) { 1468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King logerr = cmd_status[index].log; 1469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King err = cmd_status[index].name; 1470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 14720ae808e02e000058cf65a47662c187dc061bcfd3Brian King if (!logerr && (vhost->log_level <= (IBMVFC_DEFAULT_LOG_LEVEL + 1))) 1473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 1474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = rsp->data.info.rsp_code; 1477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, "Command (%02X) failed: %s (%x:%x) " 1479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, resid=%d, scsi_status: %x\n", 1480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->cmnd[0], err, vfc_cmd->status, vfc_cmd->error, 1481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags, rsp_code, scsi_get_resid(cmnd), rsp->scsi_status); 1482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 14856d29cc56bead73b6f386cf43333708579deb5eedBrian King * ibmvfc_relogin - Log back into the specified device 14866d29cc56bead73b6f386cf43333708579deb5eedBrian King * @sdev: scsi device struct 14876d29cc56bead73b6f386cf43333708579deb5eedBrian King * 14886d29cc56bead73b6f386cf43333708579deb5eedBrian King **/ 14896d29cc56bead73b6f386cf43333708579deb5eedBrian Kingstatic void ibmvfc_relogin(struct scsi_device *sdev) 14906d29cc56bead73b6f386cf43333708579deb5eedBrian King{ 14916d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 14926d29cc56bead73b6f386cf43333708579deb5eedBrian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 14936d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 14946d29cc56bead73b6f386cf43333708579deb5eedBrian King 14956d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 14966d29cc56bead73b6f386cf43333708579deb5eedBrian King if (rport == tgt->rport) { 14976d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 14986d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 14996d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15006d29cc56bead73b6f386cf43333708579deb5eedBrian King } 15016d29cc56bead73b6f386cf43333708579deb5eedBrian King 15026d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 15036d29cc56bead73b6f386cf43333708579deb5eedBrian King} 15046d29cc56bead73b6f386cf43333708579deb5eedBrian King 15056d29cc56bead73b6f386cf43333708579deb5eedBrian King/** 1506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scsi_done - Handle responses from commands 1507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event to be handled 1508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Used as a callback when sending scsi cmds. 1510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_scsi_done(struct ibmvfc_event *evt) 1512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd = &evt->xfer_iu->cmd; 1514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *rsp = &vfc_cmd->rsp; 1515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_cmnd *cmnd = evt->cmnd; 15162bac406df52100aec42e230a2cc2986d34e86218Brian King u32 rsp_len = 0; 15172bac406df52100aec42e230a2cc2986d34e86218Brian King u32 sense_len = rsp->fcp_sense_len; 1518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (cmnd) { 1520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->response_flags & IBMVFC_ADAPTER_RESID_VALID) 1521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, vfc_cmd->adapter_resid); 1522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rsp->flags & FCP_RESID_UNDER) 1523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, rsp->fcp_resid); 1524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 1525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_resid(cmnd, 0); 1526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vfc_cmd->status) { 1528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = ibmvfc_get_err_result(vfc_cmd); 1529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->flags & FCP_RSP_LEN_VALID) 1531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_len = rsp->fcp_rsp_len; 1532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((sense_len + rsp_len) > SCSI_SENSE_BUFFERSIZE) 1533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sense_len = SCSI_SENSE_BUFFERSIZE - rsp_len; 15342bac406df52100aec42e230a2cc2986d34e86218Brian King if ((rsp->flags & FCP_SNS_LEN_VALID) && rsp->fcp_sense_len && rsp_len <= 8) 1535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(cmnd->sense_buffer, rsp->data.sense + rsp_len, sense_len); 1536646d3857b95e8e310aae7a4594f43d7f3b100a1fBrian King if ((vfc_cmd->status & IBMVFC_VIOS_FAILURE) && (vfc_cmd->error == IBMVFC_PLOGI_REQUIRED)) 15376d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_relogin(cmnd->device); 1538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 153950119dad2a6c2674f35d81e708822b40f65f40cbBrian King if (!cmnd->result && (!scsi_get_resid(cmnd) || (rsp->flags & FCP_RESID_OVER))) 154050119dad2a6c2674f35d81e708822b40f65f40cbBrian King cmnd->result = (DID_ERROR << 16); 154150119dad2a6c2674f35d81e708822b40f65f40cbBrian King 1542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_error(evt); 1543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!cmnd->result && 1546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) < cmnd->underflow)) 1547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_ERROR << 16); 1548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_dma_unmap(cmnd); 1550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done(cmnd); 1551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1553ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->eh_comp) 1554ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King complete(evt->eh_comp); 1555ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_host_chkready - Check if the host can accept commands 1561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: struct ibmvfc host 1562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if host can accept command / 0 if not 1565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic inline int ibmvfc_host_chkready(struct ibmvfc_host *vhost) 1567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int result = 0; 1569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->state) { 1571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DEAD: 1572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_OFFLINE: 1573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_NO_CONNECT << 16; 1574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_NO_CRQ: 1576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_INITIALIZING: 1577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HALTED: 1578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_LINK_DOWN: 1579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = DID_REQUEUE << 16; 1580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_ACTIVE: 1582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King result = 0; 1583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return result; 1587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_queuecommand - The queuecommand function of the scsi template 1591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmnd: struct scsi_cmnd to be executed 1592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @done: Callback function to be called when cmnd is completed 1593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_queuecommand(struct scsi_cmnd *cmnd, 1598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*done) (struct scsi_cmnd *)) 1599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmnd->device->host); 1601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); 1602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *vfc_cmd; 1603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 1604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u8 tag[2]; 1605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 1606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely((rc = fc_remote_port_chkready(rport))) || 1608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unlikely((rc = ibmvfc_host_chkready(vhost)))) { 1609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = rc; 1610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = (DID_OK << 16); 1615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_scsi_done, IBMVFC_CMD_FORMAT); 1617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->cmnd = cmnd; 1618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->scsi_done = done; 1619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd = &evt->iu.cmd; 1620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(vfc_cmd, 0, sizeof(*vfc_cmd)); 1621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp.len = sizeof(vfc_cmd->rsp); 1623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->frame_type = IBMVFC_SCSI_FCP_TYPE; 1624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->payload_len = sizeof(vfc_cmd->iu); 1625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->resp_len = sizeof(vfc_cmd->rsp); 1626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->cancel_key = (unsigned long)cmnd->device->hostdata; 1627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->tgt_scsi_id = rport->port_id; 1628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.xfer_len = scsi_bufflen(cmnd); 1629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(cmnd->device->lun, &vfc_cmd->iu.lun); 1630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vfc_cmd->iu.cdb, cmnd->cmnd, cmnd->cmd_len); 1631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1632072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (scsi_populate_tag_msg(cmnd, tag)) { 1633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->task_tag = tag[1]; 1634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (tag[0]) { 1635072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_SIMPLE_TAG: 1636072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_SIMPLE_TASK; 1637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_HEAD_TAG: 1639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_HEAD_OF_QUEUE; 1640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case MSG_ORDERED_TAG: 1642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vfc_cmd->iu.pri_task_attr = IBMVFC_ORDERED_TASK; 1643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 1645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) 1648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ibmvfc_send_event(evt, vhost, 0); 1649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == -ENOMEM) 1652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return SCSI_MLQUEUE_HOST_BUSY; 1653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scmd_printk(KERN_ERR, cmnd, 1656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "Failed to map DMA buffer for command. rc=%d\n", rc); 1657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King cmnd->result = DID_ERROR << 16; 1659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done(cmnd); 1660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_sync_completion - Signal that a synchronous command has completed 1665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 1666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_sync_completion(struct ibmvfc_event *evt) 1669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* copy the response back */ 1671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->sync_iu) 1672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *evt->sync_iu = *evt->xfer_iu; 1673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King complete(&evt->comp); 1675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_reset_device - Reset the device with the specified reset type 1679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to reset 1680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: reset type 1681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @desc: reset type description for log messages 1682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_reset_device(struct scsi_device *sdev, int type, char *desc) 1687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 169150ed9a005dc0846685f57c637436ee28e404368dBrian King struct ibmvfc_event *evt = NULL; 1692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = type; 1715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send %s reset event. rc=%d\n", 1724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, rsp_rc); 1725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Resetting %s\n", desc); 1729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1731230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 1732230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 1733230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 1734230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 1735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "%s reset failed: %s (%x:%x) " 1739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King desc, ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "%s reset successful\n", desc); 1746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_abort_task_set - Abort outstanding commands to the device 1755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to abort commands 1756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends an Abort Task Set to the VIOS for the specified device. This does 1758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any cancel to the VIOS. That must be done separately. 1759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_abort_task_set(struct scsi_device *sdev) 1764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 1767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_cmd *tmf; 1768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp_iu; 1770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_fcp_rsp *fc_rsp = &rsp_iu.cmd.rsp; 1771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_code = 0; 1774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1777072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1778072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1779072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1780072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1781072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1782072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1783072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1784072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1785072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1786072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to abort\n"); 1787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_CMD_FORMAT); 1794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.cmd; 1796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.va = (u64)evt->crq.ioba + offsetof(struct ibmvfc_cmd, rsp); 1798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp.len = sizeof(tmf->rsp); 1799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->frame_type = IBMVFC_SCSI_FCP_TYPE; 1800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->payload_len = sizeof(tmf->iu); 1801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->resp_len = sizeof(tmf->rsp); 1802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->tgt_scsi_id = rport->port_id; 1804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->iu.lun); 1805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (IBMVFC_NO_MEM_DESC | IBMVFC_TMF); 1806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->iu.tmf_flags = IBMVFC_ABORT_TASK_SET; 1807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp_iu; 1808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send abort. rc=%d\n", rsp_rc); 1817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Aborting outstanding commands\n"); 1821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1822072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1823230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_iu.cmd.status) 1824230934a6fe2f44d14ef840639f010c9cf4da098fBrian King rsp_code = ibmvfc_get_err_result(&rsp_iu.cmd); 1825230934a6fe2f44d14ef840639f010c9cf4da098fBrian King 1826230934a6fe2f44d14ef840639f010c9cf4da098fBrian King if (rsp_code) { 1827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (fc_rsp->flags & FCP_RSP_LEN_VALID) 1828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_code = fc_rsp->data.info.rsp_code; 1829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Abort failed: %s (%x:%x) " 1831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "flags: %x fcp_rsp: %x, scsi_status: %x\n", 1832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_get_cmd_error(rsp_iu.cmd.status, rsp_iu.cmd.error), 1833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_iu.cmd.status, rsp_iu.cmd.error, fc_rsp->flags, rsp_code, 1834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_rsp->scsi_status); 1835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = -EIO; 1836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 1837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Abort successful\n"); 1838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rsp_rc; 1843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_cancel_all - Cancel all outstanding commands to the device 1847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device to cancel commands 1848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @type: type of error recovery being performed 1849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * This sends a cancel to the VIOS for the specified device. This does 1851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * NOT send any abort to the actual device. That must be done separately. 1852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 1854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 1855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 1856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_cancel_all(struct scsi_device *sdev, int type) 1857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 1858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 1859ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 1860ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct fc_rport *rport = starget_to_rport(starget); 1861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_tmf *tmf; 1862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt, *found_evt; 1863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King union ibmvfc_iu rsp; 1864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rsp_rc = -EBUSY; 1865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 1866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u16 status; 1867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 1869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = NULL; 1871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(evt, &vhost->sent, queue) { 1872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (evt->cmnd && evt->cmnd->device == sdev) { 1873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King found_evt = evt; 1874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 1875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!found_evt) { 1879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->log_level > IBMVFC_DEFAULT_LOG_LEVEL) 1880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "No events found to cancel\n"); 1881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_ACTIVE) { 1886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 1887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_sync_completion, IBMVFC_MAD_FORMAT); 1888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf = &evt->iu.tmf; 1890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(tmf, 0, sizeof(*tmf)); 1891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.version = 1; 1892072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.opcode = IBMVFC_TMF_MAD; 1893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->common.length = sizeof(*tmf); 1894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->scsi_id = rport->port_id; 1895072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int_to_scsilun(sdev->lun, &tmf->lun); 1896072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->flags = (type | IBMVFC_TMF_LUA_VALID); 1897072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tmf->cancel_key = (unsigned long)sdev->hostdata; 1898ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King tmf->my_cancel_key = (unsigned long)starget->hostdata; 1899072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->sync_iu = &rsp; 1901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_completion(&evt->comp); 1902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp_rc = ibmvfc_send_event(evt, vhost, default_timeout); 1903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp_rc != 0) { 1908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_ERR, sdev, "Failed to send cancel event. rc=%d\n", rsp_rc); 1909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Cancelling outstanding commands.\n"); 1913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wait_for_completion(&evt->comp); 1915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King status = rsp.mad_common.status; 1916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 1917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 1918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (status != IBMVFC_MAD_SUCCESS) { 1921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_WARNING, sdev, "Cancel failed with rc=%x\n", status); 1922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -EIO; 1923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 1924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev_printk(KERN_INFO, sdev, "Successfully cancelled outstanding commands\n"); 1926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 1927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 1928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 1929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 1930ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_target - Match function for specified target 1931ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1932ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget) 1933ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1934ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1935ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches starget / 0 if event does not match starget 1936ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1937ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_target(struct ibmvfc_event *evt, void *device) 1938ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1939ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && scsi_target(evt->cmnd->device) == device) 1940ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1941ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1942ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1943ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1944ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1945ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_match_lun - Match function for specified LUN 1946ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @evt: ibmvfc event struct 1947ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (sdev) 1948ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1949ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1950ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1 if event matches sdev / 0 if event does not match sdev 1951ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1952ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_match_lun(struct ibmvfc_event *evt, void *device) 1953ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1954ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (evt->cmnd && evt->cmnd->device == device) 1955ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 1; 1956ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 1957ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 1958ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1959ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 1960ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_wait_for_ops - Wait for ops to complete 1961ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @vhost: ibmvfc host struct 1962ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @device: device to match (starget or sdev) 1963ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @match: match function 1964ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 1965ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 1966ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * SUCCESS / FAILED 1967ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 1968ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_wait_for_ops(struct ibmvfc_host *vhost, void *device, 1969ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int (*match) (struct ibmvfc_event *, void *)) 1970ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 1971ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_event *evt; 1972ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King DECLARE_COMPLETION_ONSTACK(comp); 1973ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int wait; 1974ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags; 1975ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King signed long timeout = init_timeout * HZ; 1976ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1977ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King ENTER; 1978ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King do { 1979ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1980ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1981ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1982ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1983ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = ∁ 1984ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1985ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1986ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 1987ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 1988ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1989ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) { 1990ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King timeout = wait_for_completion_timeout(&comp, timeout); 1991ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 1992ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!timeout) { 1993ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait = 0; 1994ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 1995ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King list_for_each_entry(evt, &vhost->sent, queue) { 1996ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (match(evt, device)) { 1997ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King evt->eh_comp = NULL; 1998ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King wait++; 1999ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2000ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2001ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2002ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (wait) 2003ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King dev_err(vhost->dev, "Timed out waiting for aborted commands\n"); 2004ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2005ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return wait ? FAILED : SUCCESS; 2006ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2007ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } 2008ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King } while (wait); 2009ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2010ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King LEAVE; 2011ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return SUCCESS; 2012ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2013ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2014ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_abort_handler - Abort a command 2016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command to abort 2017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_abort_handler(struct scsi_cmnd *cmd) 2022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2023ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2024ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, abort_rc; 2026ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2030ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 2031ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King abort_rc = ibmvfc_abort_task_set(sdev); 2032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2033ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2034ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2037ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_device_reset_handler - Reset a single LUN 2042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_device_reset_handler(struct scsi_cmnd *cmd) 2048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2049ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2050ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int cancel_rc, reset_rc; 2052ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 2056ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King cancel_rc = ibmvfc_cancel_all(sdev, IBMVFC_TMF_LUN_RESET); 2057ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_LUN_RESET, "LUN"); 2058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2059ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2060ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, sdev, ibmvfc_match_lun); 2061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2063ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 20674a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_abts - Device iterated cancel all function 2068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 20724a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_abts(struct scsi_device *sdev, void *data) 20734a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King{ 20744a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King unsigned long *rc = data; 20754a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_ABORT_TASK_SET); 20764a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King} 20774a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King 20784a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King/** 20794a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function 20804a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @sdev: scsi device struct 20814a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * @data: return code 20824a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King * 20834a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King **/ 20844a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian Kingstatic void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) 2085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); 2088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_abort_all - Device iterated abort task set function 2092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: return code 2094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_dev_abort_all(struct scsi_device *sdev, void *data) 2097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long *rc = data; 2099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King *rc |= ibmvfc_abort_task_set(sdev); 2100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_target_reset_handler - Reset the target 2104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: scsi command struct 2105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * SUCCESS / FAILED 2108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) 2110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2111ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_device *sdev = cmd->device; 2112ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(sdev->host); 2113ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct scsi_target *starget = scsi_target(sdev); 2114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int reset_rc; 2115ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 2119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_wait_while_resetting(vhost); 21204a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset); 2121ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); 2122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2123ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !reset_rc) 2124ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2127ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return rc; 2128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_eh_host_reset_handler - Reset the connection to the server 2132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @cmd: struct scsi_cmnd having problems 2133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_eh_host_reset_handler(struct scsi_cmnd *cmd) 2136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 2138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(cmd->device->host); 2139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Resetting connection due to error recovery\n"); 2141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_issue_fc_host_lip(vhost->host); 2142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc ? FAILED : SUCCESS; 2143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_terminate_rport_io - Terminate all pending I/O to the rport. 2147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @rport: rport struct 2148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 2151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_terminate_rport_io(struct fc_rport *rport) 2153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct scsi_target *starget = to_scsi_target(&rport->dev); 2155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long cancel_rc = 0; 2158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long abort_rc = 0; 2159ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King int rc = FAILED; 2160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 21624a5c4a5ed2b8b7fac68368e7ab8cb415dd006418Brian King starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_abts); 2163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King starget_for_each_device(starget, &abort_rc, ibmvfc_dev_abort_all); 2164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2165ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (!cancel_rc && !abort_rc) 2166ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target); 2167ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2168ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King if (rc == FAILED) 2169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_issue_fc_host_lip(shost); 2170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 2171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const struct { 2174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King enum ibmvfc_async_event ae; 2175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc; 2176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} ae_desc [] = { 2177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PLOGI, "PLOGI" }, 2178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_LOGO, "LOGO" }, 2179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ELS_PRLO, "PRLO" }, 2180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_NPORT, "N-Port SCN" }, 2181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_GROUP, "Group SCN" }, 2182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" }, 2183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" }, 2184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_UP, "Link Up" }, 2185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DOWN, "Link Down" }, 2186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_LINK_DEAD, "Link Dead" }, 2187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_HALT, "Halt" }, 2188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_RESUME, "Resume" }, 2189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" }, 2190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *unknown_ae = "Unknown async"; 2193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_get_ae_desc - Get text description for async event 2196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @ae: async event 2197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2198072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic const char *ibmvfc_get_ae_desc(u64 ae) 2200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i; 2202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0; i < ARRAY_SIZE(ae_desc); i++) 2204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ae_desc[i].ae == ae) 2205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return ae_desc[i].desc; 2206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return unknown_ae; 2208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_async - Handle an async event from the adapter 2212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: crq to process 2213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_async(struct ibmvfc_async_crq *crq, 2217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost) 2218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *desc = ibmvfc_get_ae_desc(crq->event); 22206d29cc56bead73b6f386cf43333708579deb5eedBrian King struct ibmvfc_target *tgt; 2221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2222775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx," 2223775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name); 2224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->event) { 2226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_RESUME: 2227497f9c504f76e7a751cd370604e1c8521743746dBrian King switch (crq->link_state) { 2228497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DOWN: 2229497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2230497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2231497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_DEAD: 2232497f9c504f76e7a751cd370604e1c8521743746dBrian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2233497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2234497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_UP: 2235497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LS_LINK_BOUNCED: 2236497f9c504f76e7a751cd370604e1c8521743746dBrian King default: 2237497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2238497f9c504f76e7a751cd370604e1c8521743746dBrian King vhost->delay_init = 1; 2239497f9c504f76e7a751cd370604e1c8521743746dBrian King __ibmvfc_reset_host(vhost); 2240497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2241497f9c504f76e7a751cd370604e1c8521743746dBrian King }; 2242497f9c504f76e7a751cd370604e1c8521743746dBrian King 2243497f9c504f76e7a751cd370604e1c8521743746dBrian King break; 2244497f9c504f76e7a751cd370604e1c8521743746dBrian King case IBMVFC_AE_LINK_UP: 2245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_LINKUP; 2246d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2247d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_FABRIC: 2250d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King case IBMVFC_AE_SCN_DOMAIN: 2251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 2252d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King vhost->delay_init = 1; 2253d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King __ibmvfc_reset_host(vhost); 2254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_NPORT: 2256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_SCN_GROUP: 2257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log |= IBMVFC_AE_RSCN; 22586d29cc56bead73b6f386cf43333708579deb5eedBrian King ibmvfc_reinit_host(vhost); 22596d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 2260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_LOGO: 2261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PRLO: 2262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ELS_PLOGI: 22636d29cc56bead73b6f386cf43333708579deb5eedBrian King list_for_each_entry(tgt, &vhost->targets, queue) { 22646d29cc56bead73b6f386cf43333708579deb5eedBrian King if (!crq->scsi_id && !crq->wwpn && !crq->node_name) 22656d29cc56bead73b6f386cf43333708579deb5eedBrian King break; 22666d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->scsi_id && tgt->scsi_id != crq->scsi_id) 22676d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 22686d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->wwpn && tgt->ids.port_name != crq->wwpn) 22696d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 22706d29cc56bead73b6f386cf43333708579deb5eedBrian King if (crq->node_name && tgt->ids.node_name != crq->node_name) 22716d29cc56bead73b6f386cf43333708579deb5eedBrian King continue; 2272017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (tgt->need_login && crq->event == IBMVFC_AE_ELS_LOGO) 2273017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 1; 2274017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if (!tgt->need_login || crq->event == IBMVFC_AE_ELS_PLOGI) { 2275017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2276017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King ibmvfc_reinit_host(vhost); 2277017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King } 22786d29cc56bead73b6f386cf43333708579deb5eedBrian King } 2279072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2280072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DOWN: 2281072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_ADAPTER_FAILED: 2282072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2283072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2284072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_LINK_DEAD: 2285072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2286072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2287072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_AE_HALT: 2288072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_HALTED); 2289072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2290072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2291775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Unknown async event received: %lld\n", crq->event); 2292072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2293072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2294072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2295072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2296072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2297072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_handle_crq - Handles and frees received events in the CRQ 2298072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @crq: Command/Response queue 2299072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2300072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2301072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2302072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_handle_crq(struct ibmvfc_crq *crq, struct ibmvfc_host *vhost) 2303072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2304072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King long rc; 2305072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = (struct ibmvfc_event *)crq->ioba; 2306072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2307072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->valid) { 2308072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_RSP: 2309072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (crq->format) { 2310072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT: 2311072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialized\n"); 2312072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Send back a response */ 2313072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_send_crq_init_complete(vhost); 2314072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == 0) 2315861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2316072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unable to send init rsp. rc=%ld\n", rc); 2318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_INIT_COMPLETE: 2320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Partner initialization complete\n"); 2321861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 2322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Unknown crq message type: %d\n", crq->format); 2325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_XPORT_EVENT: 2328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state = IBMVFC_NO_CRQ; 232979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 0; 2330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 2331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_PARTITION_MIGRATED) { 2332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* We need to re-setup the interpartition connection */ 2333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Re-enabling adapter\n"); 2334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 1; 2335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_REQUEUE); 2336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reenable_crq_queue(vhost)) || 2337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after enable (rc=%ld)\n", rc); 2340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 2343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter failed (rc=%d)\n", crq->format); 2344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 2346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_reset_crq(vhost)) || 2347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King (rc = ibmvfc_send_crq_init(vhost))) { 2348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 2349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Error after reset (rc=%ld)\n", rc); 2350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DOWN); 2352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_CRQ_CMD_RSP: 2355072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Got an invalid message type 0x%02x\n", crq->valid); 2358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2359072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->format == IBMVFC_ASYNC_EVENT) 2362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* The only kind of payload CRQs we should get are responses to 2365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * things we send. Make sure this response is to something we 2366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actually sent 2367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King */ 2368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(!ibmvfc_valid_event(&vhost->pool, evt))) { 2369775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Returned correlation_token 0x%08llx is invalid!\n", 2370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (unlikely(atomic_read(&evt->free))) { 2375775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Received duplicate correlation_token 0x%08llx!\n", 2376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->ioba); 2377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King del_timer(&evt->timer); 2381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&evt->queue); 2382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_trc_end(evt); 2383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->done(evt); 2384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_scan_finished - Check if the device scan is done. 2388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @shost: scsi host struct 2389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @time: current elapsed time 2390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 if scan is not done / 1 if scan is done 2393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (time >= (init_timeout * HZ)) { 2402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Scan taking longer than %d seconds, " 2403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King "continuing initialization\n", init_timeout); 2404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 240743c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->scan_complete) 2408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return done; 2411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_alloc - Setup the device's task set value 2415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Set the device's task set value so that error handling works as 2418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * expected. 2419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / -ENXIO if device does not exist 2422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_alloc(struct scsi_device *sdev) 2424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 2427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!rport || fc_remote_port_chkready(rport)) 2431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENXIO; 2432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->hostdata = (void *)(unsigned long)vhost->task_set++; 2435072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2436072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2437072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2438072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2440ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * ibmvfc_target_alloc - Setup the target's task set value 2441ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * @starget: struct scsi_target 2442ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2443ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Set the target's task set value so that error handling works as 2444ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * expected. 2445ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 2446ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * Returns: 2447ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King * 0 on success / -ENXIO if device does not exist 2448ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King **/ 2449ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian Kingstatic int ibmvfc_target_alloc(struct scsi_target *starget) 2450ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King{ 2451ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2452ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2453ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King unsigned long flags = 0; 2454ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2455ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_lock_irqsave(shost->host_lock, flags); 2456ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King starget->hostdata = (void *)(unsigned long)vhost->task_set++; 2457ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King spin_unlock_irqrestore(shost->host_lock, flags); 2458ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King return 0; 2459ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King} 2460ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King 2461ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King/** 2462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_slave_configure - Configure the device 2463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: struct scsi_device device to configure 2464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Enable allow_restart for a device if it is a disk. Adjust the 2466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * queue_depth here also. 2467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 2470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_slave_configure(struct scsi_device *sdev) 2472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = sdev->host; 2474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport = starget_to_rport(sdev->sdev_target); 2475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->type == TYPE_DISK) 2479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sdev->allow_restart = 1; 2480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); 2483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->dev_loss_tmo = dev_loss_tmo; 2488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_depth - Change the device's queue depth 2494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @qdepth: depth to set 2496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual depth set 2499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_depth(struct scsi_device *sdev, int qdepth) 2501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (qdepth > IBMVFC_MAX_CMDS_PER_LUN) 2503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King qdepth = IBMVFC_MAX_CMDS_PER_LUN; 2504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_adjust_queue_depth(sdev, 0, qdepth); 2506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return sdev->queue_depth; 2507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_change_queue_type - Change the device's queue type 2511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @sdev: scsi device struct 2512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tag_type: type of tags to use 2513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * actual queue type set 2516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_change_queue_type(struct scsi_device *sdev, int tag_type) 2518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (sdev->tagged_supported) { 2520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_set_tag_type(sdev, tag_type); 2521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tag_type) 2523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_activate_tcq(sdev, sdev->queue_depth); 2524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 2525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_deactivate_tcq(sdev, sdev->queue_depth); 2526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tag_type = 0; 2528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return tag_type; 2530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_partition_name(struct device *dev, 2533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.partition_name); 2540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_device_name(struct device *dev, 2543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.device_name); 2550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_loc_code(struct device *dev, 2553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.port_loc_code); 2560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_drc_name(struct device *dev, 2563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%s\n", 2569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf->resp.drc_name); 2570072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2571072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2572072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_host_npiv_version(struct device *dev, 2573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return snprintf(buf, PAGE_SIZE, "%d\n", vhost->login_buf->resp.version); 2578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2580497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic ssize_t ibmvfc_show_host_capabilities(struct device *dev, 2581497f9c504f76e7a751cd370604e1c8521743746dBrian King struct device_attribute *attr, char *buf) 2582497f9c504f76e7a751cd370604e1c8521743746dBrian King{ 2583497f9c504f76e7a751cd370604e1c8521743746dBrian King struct Scsi_Host *shost = class_to_shost(dev); 2584497f9c504f76e7a751cd370604e1c8521743746dBrian King struct ibmvfc_host *vhost = shost_priv(shost); 2585497f9c504f76e7a751cd370604e1c8521743746dBrian King return snprintf(buf, PAGE_SIZE, "%llx\n", vhost->login_buf->resp.capabilities); 2586497f9c504f76e7a751cd370604e1c8521743746dBrian King} 2587497f9c504f76e7a751cd370604e1c8521743746dBrian King 2588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_show_log_level - Show the adapter's error logging level 2590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_show_log_level(struct device *dev, 2597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, char *buf) 2598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int len; 2603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King len = snprintf(buf, PAGE_SIZE, "%d\n", vhost->log_level); 2606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return len; 2608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_store_log_level - Change the adapter's error logging level 2612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev: class device struct 2613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_store_log_level(struct device *dev, 2619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device_attribute *attr, 2620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King const char *buf, size_t count) 2621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2624072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = simple_strtoul(buf, NULL, 10); 2628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return strlen(buf); 2630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 263285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(partition_name, S_IRUGO, ibmvfc_show_host_partition_name, NULL); 263385e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(device_name, S_IRUGO, ibmvfc_show_host_device_name, NULL); 263485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(port_loc_code, S_IRUGO, ibmvfc_show_host_loc_code, NULL); 263585e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(drc_name, S_IRUGO, ibmvfc_show_host_drc_name, NULL); 263685e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(npiv_version, S_IRUGO, ibmvfc_show_host_npiv_version, NULL); 2637497f9c504f76e7a751cd370604e1c8521743746dBrian Kingstatic DEVICE_ATTR(capabilities, S_IRUGO, ibmvfc_show_host_capabilities, NULL); 263885e2399e925e0afa04dd6e185a910bdd3dc4626bBrian Kingstatic DEVICE_ATTR(log_level, S_IRUGO | S_IWUSR, 263985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King ibmvfc_show_log_level, ibmvfc_store_log_level); 2640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#ifdef CONFIG_SCSI_IBMVFC_TRACE 2642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_read_trace - Dump the adapter trace 2644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @kobj: kobject struct 2645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @bin_attr: bin_attribute struct 2646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @buf: buffer 2647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @off: offset 2648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @count: buffer size 2649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 2651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * number of bytes printed to buffer 2652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic ssize_t ibmvfc_read_trace(struct kobject *kobj, 2654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct bin_attribute *bin_attr, 2655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *buf, loff_t off, size_t count) 2656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = container_of(kobj, struct device, kobj); 2658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost = class_to_shost(dev); 2659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = shost_priv(shost); 2660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags = 0; 2661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int size = IBMVFC_TRACE_SIZE; 2662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King char *src = (char *)vhost->trace; 2663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off > size) 2665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 2666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (off + count > size) { 2667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King size -= off; 2668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King count = size; 2669072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(shost->host_lock, flags); 2672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(buf, &src[off], count); 2673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(shost->host_lock, flags); 2674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return count; 2675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct bin_attribute ibmvfc_trace_attr = { 2678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .attr = { 2679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "trace", 2680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .mode = S_IRUGO, 2681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }, 2682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .size = 0, 2683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .read = ibmvfc_read_trace, 2684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King#endif 2686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct device_attribute *ibmvfc_attrs[] = { 268885e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_partition_name, 268985e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_device_name, 269085e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_port_loc_code, 269185e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_drc_name, 269285e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_npiv_version, 2693497f9c504f76e7a751cd370604e1c8521743746dBrian King &dev_attr_capabilities, 269485e2399e925e0afa04dd6e185a910bdd3dc4626bBrian King &dev_attr_log_level, 2695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King NULL 2696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct scsi_host_template driver_template = { 2699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .module = THIS_MODULE, 2700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = "IBM POWER Virtual FC Adapter", 2701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .proc_name = IBMVFC_NAME, 2702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .queuecommand = ibmvfc_queuecommand, 2703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_abort_handler = ibmvfc_eh_abort_handler, 2704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_device_reset_handler = ibmvfc_eh_device_reset_handler, 2705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_target_reset_handler = ibmvfc_eh_target_reset_handler, 2706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .eh_host_reset_handler = ibmvfc_eh_host_reset_handler, 2707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_alloc = ibmvfc_slave_alloc, 2708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .slave_configure = ibmvfc_slave_configure, 2709ad8dcffaf9bc1d7eb86dabf591e95f4ffb86cf1bBrian King .target_alloc = ibmvfc_target_alloc, 2710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .scan_finished = ibmvfc_scan_finished, 2711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_depth = ibmvfc_change_queue_depth, 2712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .change_queue_type = ibmvfc_change_queue_type, 2713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .cmd_per_lun = 16, 2714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .can_queue = IBMVFC_MAX_REQUESTS_DEFAULT, 2715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .this_id = -1, 2716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .sg_tablesize = SG_ALL, 2717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .max_sectors = IBMVFC_MAX_SECTORS, 2718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .use_clustering = ENABLE_CLUSTERING, 2719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .shost_attrs = ibmvfc_attrs, 2720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 2721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_async_crq - Returns the next entry in async queue 2724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2728072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2729072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_async_crq *ibmvfc_next_async_crq(struct ibmvfc_host *vhost) 2730072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2731072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_crq = &vhost->async_crq; 2732072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *crq; 2733072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2734072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &async_crq->msgs[async_crq->cur]; 2735072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2736072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++async_crq->cur == async_crq->size) 2737072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_crq->cur = 0; 2738072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2739072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2740072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2741072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2742072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2743072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2744072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2745072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_next_crq - Returns the next entry in message queue 2746072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 2747072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2748072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2749072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Pointer to next entry in queue / NULL if empty 2750072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2751072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct ibmvfc_crq *ibmvfc_next_crq(struct ibmvfc_host *vhost) 2752072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2753072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *queue = &vhost->crq; 2754072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2755072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2756072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = &queue->msgs[queue->cur]; 2757072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (crq->valid & 0x80) { 2758072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (++queue->cur == queue->size) 2759072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King queue->cur = 0; 2760072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2761072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq = NULL; 2762072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2763072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return crq; 2764072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2765072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2766072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2767072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_interrupt - Interrupt handler 2768072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @irq: number of irq to handle, not used 2769072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @dev_instance: ibmvfc_host that received interrupt 2770072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2771072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 2772072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * IRQ_HANDLED 2773072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2774072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic irqreturn_t ibmvfc_interrupt(int irq, void *dev_instance) 2775072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2776072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = (struct ibmvfc_host *)dev_instance; 2777039a08981a49e05f09db969cdd3f38f05a5df46fBrian King unsigned long flags; 2778039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 2779039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 2780039a08981a49e05f09db969cdd3f38f05a5df46fBrian King vio_disable_interrupts(to_vio_dev(vhost->dev)); 2781039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_schedule(&vhost->tasklet); 2782039a08981a49e05f09db969cdd3f38f05a5df46fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2783039a08981a49e05f09db969cdd3f38f05a5df46fBrian King return IRQ_HANDLED; 2784039a08981a49e05f09db969cdd3f38f05a5df46fBrian King} 2785039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 2786039a08981a49e05f09db969cdd3f38f05a5df46fBrian King/** 2787039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * ibmvfc_tasklet - Interrupt handler tasklet 2788039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * @data: ibmvfc host struct 2789039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * 2790039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Returns: 2791039a08981a49e05f09db969cdd3f38f05a5df46fBrian King * Nothing 2792039a08981a49e05f09db969cdd3f38f05a5df46fBrian King **/ 2793039a08981a49e05f09db969cdd3f38f05a5df46fBrian Kingstatic void ibmvfc_tasklet(void *data) 2794039a08981a49e05f09db969cdd3f38f05a5df46fBrian King{ 2795039a08981a49e05f09db969cdd3f38f05a5df46fBrian King struct ibmvfc_host *vhost = data; 2796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(vhost->dev); 2797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq *crq; 2798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq *async; 2799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 2800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int done = 0; 2801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 2803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (!done) { 2804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* Pull all the valid messages off the async CRQ */ 2805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 2807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async->valid = 0; 2808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2810f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King /* Pull all the valid messages off the CRQ */ 2811f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King while ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_crq(crq, vhost); 2813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->valid = 0; 2814f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } 2815f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King 2816f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_enable_interrupts(vdev); 2817f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King if ((async = ibmvfc_next_async_crq(vhost)) != NULL) { 2818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_disable_interrupts(vdev); 2819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_handle_async(async, vhost); 28204081b77c3a86151d2eaeed9d568a34dd0982ed52Brian King async->valid = 0; 2821f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King } else if ((crq = ibmvfc_next_crq(vhost)) != NULL) { 2822f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King vio_disable_interrupts(vdev); 2823f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King ibmvfc_handle_crq(crq, vhost); 2824f1d7fb7a8ab55357b6c7d44a53f644a043680ed1Brian King crq->valid = 0; 2825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King done = 1; 2827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 2828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 2830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_tgt - Set the next init job step for the target 2834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2835072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: job step to perform 2836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_init_tgt(struct ibmvfc_target *tgt, 2839072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT); 2842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step = job_step; 2843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 2844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_retry_tgt_init - Attempt to retry a step in target initialization 2848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @job_step: initialization job step 2850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 28517d0e462247241b8ec2d377306203b58c7f423553Brian King * Returns: 1 if step will be retried / 0 if not 28527d0e462247241b8ec2d377306203b58c7f423553Brian King * 2853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 28547d0e462247241b8ec2d377306203b58c7f423553Brian Kingstatic int ibmvfc_retry_tgt_init(struct ibmvfc_target *tgt, 2855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King void (*job_step) (struct ibmvfc_target *)) 2856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 28571c41fa8288277e76785acb50f52bb2f39509f903Brian King if (++tgt->init_retries > IBMVFC_MAX_TGT_INIT_RETRIES) { 2858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&tgt->vhost->work_wait_q); 28607d0e462247241b8ec2d377306203b58c7f423553Brian King return 0; 2861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 2862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, job_step); 28637d0e462247241b8ec2d377306203b58c7f423553Brian King return 1; 2864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2866a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/* Defined in FC-LS */ 2867a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic const struct { 2868a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code; 2869a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int retry; 2870a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int logged_in; 2871a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} prli_rsp [] = { 2872a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 0, 1, 0 }, 2873a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 1, 0, 1 }, 2874a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 2, 1, 0 }, 2875a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 3, 1, 0 }, 2876a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 4, 0, 0 }, 2877a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 5, 0, 0 }, 2878a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 6, 0, 1 }, 2879a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 7, 0, 0 }, 2880a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King { 8, 1, 0 }, 2881a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King}; 2882a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2883a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King/** 2884a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * ibmvfc_get_prli_rsp - Find PRLI response index 2885a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * @flags: PRLI response flags 2886a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King * 2887a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King **/ 2888a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian Kingstatic int ibmvfc_get_prli_rsp(u16 flags) 2889a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King{ 2890a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int i; 2891a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King int code = (flags & 0x0f00) >> 8; 2892a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2893a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King for (i = 0; i < ARRAY_SIZE(prli_rsp); i++) 2894a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[i].code == code) 2895a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return i; 2896a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2897a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King return 0; 2898a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King} 2899a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2900072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2901072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_prli_done - Completion handler for Process Login 2902072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 2903072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2904072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2905072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_prli_done(struct ibmvfc_event *evt) 2906072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2907072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 2908072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 2909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *rsp = &evt->xfer_iu->prli; 2910a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King struct ibmvfc_prli_svc_parms *parms = &rsp->parms; 2911072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 29127d0e462247241b8ec2d377306203b58c7f423553Brian King int index, level = IBMVFC_DEFAULT_LOG_LEVEL; 2913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2914072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 2915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 2916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 2917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 2918a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt_dbg(tgt, "Process Login succeeded: %X %02X %04X\n", 2919a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King parms->type, parms->flags, parms->service_parms); 2920a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King 2921a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->type == IBMVFC_SCSI_FCP_TYPE) { 2922a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King index = ibmvfc_get_prli_rsp(parms->flags); 2923a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (prli_rsp[index].logged_in) { 2924a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->flags & IBMVFC_PRLI_EST_IMG_PAIR) { 2925a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->need_login = 0; 2926a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles = 0; 2927a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_TARGET_FUNC) 2928a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_TARGET; 2929a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King if (parms->service_parms & IBMVFC_PRLI_INITIATOR_FUNC) 2930a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King tgt->ids.roles |= FC_PORT_ROLE_FCP_INITIATOR; 293143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 1; 2932a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 2933a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2934a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else if (prli_rsp[index].retry) 2935a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2936a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King else 2937a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2938a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King } else 2939a3b7aeaba29e3dd995ece05ba50db9e0650c16b6Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 2940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 2942072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 2944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 2945072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2946072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 2947072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 2948017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King if ((rsp->status & IBMVFC_VIOS_FAILURE) && rsp->error == IBMVFC_PLOGI_REQUIRED) 2949017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2950017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (tgt->logo_rcvd) 2951017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 2952017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 29537d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_prli); 295410e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 295510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 29567d0e462247241b8ec2d377306203b58c7f423553Brian King 29577d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Process Login failed: %s (%x:%x) rc=0x%02X\n", 29587d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), 29597d0e462247241b8ec2d377306203b58c7f423553Brian King rsp->status, rsp->error, status); 2960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 2961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 2962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 2964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 2965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 2966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 2967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 2969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_prli - Send a process login 2970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 2971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 2972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 2973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt) 2974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 2975072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_process_login *prli; 2976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 2977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 2978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 2980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 2981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 2983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 2984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 2985072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_prli_done, IBMVFC_MAD_FORMAT); 2986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 2987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli = &evt->iu.prli; 2988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(prli, 0, sizeof(*prli)); 2989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.version = 1; 2990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.opcode = IBMVFC_PROCESS_LOGIN; 2991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->common.length = sizeof(*prli); 2992072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->scsi_id = tgt->scsi_id; 2993072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2994072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.type = IBMVFC_SCSI_FCP_TYPE; 2995072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.flags = IBMVFC_PRLI_EST_IMG_PAIR; 2996072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King prli->parms.service_parms = IBMVFC_PRLI_INITIATOR_FUNC; 2997072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 2998072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 2999072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3000072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3001072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3002072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3003072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3004072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent process login\n"); 3005072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3006072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3007072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3008072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_plogi_done - Completion handler for Port Login 3009072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3010072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3011072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3012072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_plogi_done(struct ibmvfc_event *evt) 3013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *rsp = &evt->xfer_iu->plogi; 3017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 30187d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port Login succeeded\n"); 3025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->ids.port_name && 3026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name != wwn_to_u64(rsp->service_parms.port_name)) { 3027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->reinit = 1; 3028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Port re-init required\n"); 3029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.node_name = wwn_to_u64(rsp->service_parms.node_name); 3032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_name = wwn_to_u64(rsp->service_parms.port_name); 3033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->ids.port_id = tgt->scsi_id; 3034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms, &rsp->service_parms, 3035072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms)); 3036072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(&tgt->service_parms_change, &rsp->service_parms_change, 3037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(tgt->service_parms_change)); 3038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_prli); 3039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 3044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 30487d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_send_plogi); 304910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 305010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 30517d0e462247241b8ec2d377306203b58c7f423553Brian King 30527d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Port Login failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 30537d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 30547d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 30557d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_ls_explain(rsp->fc_explain), rsp->fc_explain, status); 3056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_send_plogi - Send PLOGI to the specified target 3066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_send_plogi(struct ibmvfc_target *tgt) 3070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_port_login *plogi; 3072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3079017b2ae33c0fc7d70320cc7f1cce0efb6ce8d929Brian King tgt->logo_rcvd = 0; 3080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_plogi_done, IBMVFC_MAD_FORMAT); 3084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi = &evt->iu.plogi; 3086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(plogi, 0, sizeof(*plogi)); 3087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.version = 1; 3088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.opcode = IBMVFC_PORT_LOGIN; 3089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->common.length = sizeof(*plogi); 3090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King plogi->scsi_id = tgt->scsi_id; 3091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent port login\n"); 3098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout_done - Completion handler for Implicit Logout MAD 3102072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout_done(struct ibmvfc_event *evt) 3106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *rsp = &evt->xfer_iu->implicit_logout; 3110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 3111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Implicit Logout succeeded\n"); 3119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3121072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3122072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_err(tgt, "Implicit Logout failed: rc=0x%02X\n", status); 3127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_INIT) 3131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_send_plogi); 3132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (vhost->action == IBMVFC_HOST_ACTION_QUERY_TGTS && 3133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id != tgt->new_scsi_id) 3134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3138072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_implicit_logout - Initiate an Implicit Logout for specified target 3141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_implicit_logout(struct ibmvfc_target *tgt) 3145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_implicit_logout *mad; 3147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_implicit_logout_done, IBMVFC_MAD_FORMAT); 3157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.implicit_logout; 3159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_IMPLICIT_LOGOUT; 3162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->old_scsi_id = tgt->scsi_id; 3164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Implicit Logout\n"); 3172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3175989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_adisc_needs_plogi - Does device need PLOGI? 3176989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @mad: ibmvfc passthru mad struct 3177989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3178989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3179989b854579875b38d45fffa7f8c89177f7698cd3Brian King * Returns: 3180989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 1 if PLOGI needed / 0 if PLOGI not needed 3181989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3182989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic int ibmvfc_adisc_needs_plogi(struct ibmvfc_passthru_mad *mad, 3183989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt) 3184989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3185989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[2], &tgt->ids.port_name, 3186989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.port_name))) 3187989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3188989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (memcmp(&mad->fc_iu.response[4], &tgt->ids.node_name, 3189989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(tgt->ids.node_name))) 3190989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3191989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (mad->fc_iu.response[6] != tgt->scsi_id) 3192989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 1; 3193989b854579875b38d45fffa7f8c89177f7698cd3Brian King return 0; 3194989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3195989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3196989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3197989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc_done - Completion handler for ADISC 3198989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3199989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3200989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3201989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc_done(struct ibmvfc_event *evt) 3202989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3203989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_target *tgt = evt->tgt; 3204989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = evt->vhost; 3205989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->xfer_iu->passthru; 3206989b854579875b38d45fffa7f8c89177f7698cd3Brian King u32 status = mad->common.status; 3207989b854579875b38d45fffa7f8c89177f7698cd3Brian King u8 fc_reason, fc_explain; 3208989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3209989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 3210989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 321110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3212989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3213989b854579875b38d45fffa7f8c89177f7698cd3Brian King switch (status) { 3214989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_SUCCESS: 3215989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "ADISC succeeded\n"); 3216989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (ibmvfc_adisc_needs_plogi(mad, tgt)) 32175e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3218989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3219989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3220989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3221989b854579875b38d45fffa7f8c89177f7698cd3Brian King case IBMVFC_MAD_FAILED: 3222989b854579875b38d45fffa7f8c89177f7698cd3Brian King default: 32235e47167b6be0ca24cbb04fb71ea611ab7c089affBrian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3224989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_reason = (mad->fc_iu.response[1] & 0x00ff0000) >> 16; 3225989b854579875b38d45fffa7f8c89177f7698cd3Brian King fc_explain = (mad->fc_iu.response[1] & 0x0000ff00) >> 8; 3226989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_info(tgt, "ADISC failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 3227989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_cmd_error(mad->iu.status, mad->iu.error), 3228989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.status, mad->iu.error, 3229989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_fc_type(fc_reason), fc_reason, 3230989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_get_ls_explain(fc_explain), fc_explain, status); 3231989b854579875b38d45fffa7f8c89177f7698cd3Brian King break; 3232989b854579875b38d45fffa7f8c89177f7698cd3Brian King }; 3233989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3234989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3235989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_free_event(evt); 3236989b854579875b38d45fffa7f8c89177f7698cd3Brian King wake_up(&vhost->work_wait_q); 3237989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3238989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3239989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3240989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_init_passthru - Initialize an event struct for FC passthru 3241989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @evt: ibmvfc event struct 3242989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 3243989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3244989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_init_passthru(struct ibmvfc_event *evt) 3245989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3246989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad = &evt->iu.passthru; 3247989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3248989b854579875b38d45fffa7f8c89177f7698cd3Brian King memset(mad, 0, sizeof(*mad)); 3249989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.version = 1; 3250989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.opcode = IBMVFC_PASSTHRU; 3251989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->common.length = sizeof(*mad) - sizeof(mad->fc_iu) - sizeof(mad->iu); 3252989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.va = (u64)evt->crq.ioba + 3253989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, iu); 3254989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->cmd_ioba.len = sizeof(mad->iu); 3255989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd_len = sizeof(mad->fc_iu.payload); 3256989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp_len = sizeof(mad->fc_iu.response); 3257989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.va = (u64)evt->crq.ioba + 3258989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3259989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, payload); 3260989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.cmd.len = sizeof(mad->fc_iu.payload); 3261989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.va = (u64)evt->crq.ioba + 3262989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_mad, fc_iu) + 3263989b854579875b38d45fffa7f8c89177f7698cd3Brian King offsetof(struct ibmvfc_passthru_fc_iu, response); 3264989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.rsp.len = sizeof(mad->fc_iu.response); 3265989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3266989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3267989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 326810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_tgt_adisc_cancel_done - Completion handler when cancelling an ADISC 326910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @evt: ibmvfc event struct 327010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 327110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * Just cleanup this event struct. Everything else is handled by 327210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * the ADISC completion handler. If the ADISC never actually comes 327310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * back, we still have the timer running on the ADISC event struct 327410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * which will fire and cause the CRQ to get reset. 327510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 327610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 327710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_tgt_adisc_cancel_done(struct ibmvfc_event *evt) 327810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 327910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = evt->vhost; 328010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_target *tgt = evt->tgt; 328110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 328210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC cancel complete\n"); 328310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 328410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_free_event(evt); 328510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 328610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King wake_up(&vhost->work_wait_q); 328710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 328810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 328910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 329010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * ibmvfc_adisc_timeout - Handle an ADISC timeout 329110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * @tgt: ibmvfc target struct 329210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * 329310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * If an ADISC times out, send a cancel. If the cancel times 329410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * out, reset the CRQ. When the ADISC comes back as cancelled, 329510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * log back into the target. 329610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King **/ 329710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian Kingstatic void ibmvfc_adisc_timeout(struct ibmvfc_target *tgt) 329810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King{ 329910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_host *vhost = tgt->vhost; 330010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_event *evt; 330110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King struct ibmvfc_tmf *tmf; 330210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King unsigned long flags; 330310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King int rc; 330410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 330510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "ADISC timeout\n"); 330610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 330710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (vhost->abort_threads >= disc_threads || 330810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->action != IBMVFC_TGT_ACTION_INIT_WAIT || 330910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->state != IBMVFC_INITIALIZING || 331010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->action != IBMVFC_HOST_ACTION_QUERY_TGTS) { 331110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 331210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King return; 331310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 331410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 331510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads++; 331610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_get(&tgt->kref); 331710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt = ibmvfc_get_event(vhost); 331810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_cancel_done, IBMVFC_MAD_FORMAT); 331910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 332010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King evt->tgt = tgt; 332110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf = &evt->iu.tmf; 332210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King memset(tmf, 0, sizeof(*tmf)); 332310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.version = 1; 332410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.opcode = IBMVFC_TMF_MAD; 332510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->common.length = sizeof(*tmf); 332610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->scsi_id = tgt->scsi_id; 332710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tmf->cancel_key = tgt->cancel_key; 332810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 332910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King rc = ibmvfc_send_event(evt, vhost, default_timeout); 333010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 333110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (rc) { 333210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_err(tgt, "Failed to send cancel event for ADISC. rc=%d\n", rc); 333310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->abort_threads--; 333410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King kref_put(&tgt->kref, ibmvfc_release_tgt); 333510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King __ibmvfc_reset_host(vhost); 333610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } else 333710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt_dbg(tgt, "Attempting to cancel ADISC\n"); 333810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 333910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King} 334010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 334110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King/** 3342989b854579875b38d45fffa7f8c89177f7698cd3Brian King * ibmvfc_tgt_adisc - Initiate an ADISC for specified target 3343989b854579875b38d45fffa7f8c89177f7698cd3Brian King * @tgt: ibmvfc target struct 3344989b854579875b38d45fffa7f8c89177f7698cd3Brian King * 334510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * When sending an ADISC we end up with two timers running. The 334610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * first timer is the timer in the ibmvfc target struct. If this 334710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, we send a cancel to the target. The second timer is the 334810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * timer on the ibmvfc event for the ADISC, which is longer. If that 334910501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * fires, it means the ADISC timed out and our attempt to cancel it 335010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King * also failed, so we need to reset the CRQ. 3351989b854579875b38d45fffa7f8c89177f7698cd3Brian King **/ 3352989b854579875b38d45fffa7f8c89177f7698cd3Brian Kingstatic void ibmvfc_tgt_adisc(struct ibmvfc_target *tgt) 3353989b854579875b38d45fffa7f8c89177f7698cd3Brian King{ 3354989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_passthru_mad *mad; 3355989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3356989b854579875b38d45fffa7f8c89177f7698cd3Brian King struct ibmvfc_event *evt; 3357989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3358989b854579875b38d45fffa7f8c89177f7698cd3Brian King if (vhost->discovery_threads >= disc_threads) 3359989b854579875b38d45fffa7f8c89177f7698cd3Brian King return; 3360989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3361989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_get(&tgt->kref); 3362989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt = ibmvfc_get_event(vhost); 3363989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads++; 3364989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_adisc_done, IBMVFC_MAD_FORMAT); 3365989b854579875b38d45fffa7f8c89177f7698cd3Brian King evt->tgt = tgt; 3366989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3367989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_passthru(evt); 3368989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad = &evt->iu.passthru; 3369989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.flags = IBMVFC_FC_ELS; 3370989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->iu.scsi_id = tgt->scsi_id; 337110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mad->iu.cancel_key = tgt->cancel_key; 3372989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3373989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[0] = IBMVFC_ADISC; 3374989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[2], &vhost->login_buf->resp.port_name, 3375989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.port_name)); 3376989b854579875b38d45fffa7f8c89177f7698cd3Brian King memcpy(&mad->fc_iu.payload[4], &vhost->login_buf->resp.node_name, 3377989b854579875b38d45fffa7f8c89177f7698cd3Brian King sizeof(vhost->login_buf->resp.node_name)); 3378989b854579875b38d45fffa7f8c89177f7698cd3Brian King mad->fc_iu.payload[6] = vhost->login_buf->resp.scsi_id & 0x00ffffff; 3379989b854579875b38d45fffa7f8c89177f7698cd3Brian King 338010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (timer_pending(&tgt->timer)) 338110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King mod_timer(&tgt->timer, jiffies + (IBMVFC_ADISC_TIMEOUT * HZ)); 338210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King else { 338310501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.data = (unsigned long) tgt; 338410501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.expires = jiffies + (IBMVFC_ADISC_TIMEOUT * HZ); 338510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->timer.function = (void (*)(unsigned long))ibmvfc_adisc_timeout; 338610501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King add_timer(&tgt->timer); 338710501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King } 338810501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King 3389989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 339010501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King if (ibmvfc_send_event(evt, vhost, IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT)) { 3391989b854579875b38d45fffa7f8c89177f7698cd3Brian King vhost->discovery_threads--; 339210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer(&tgt->timer); 3393989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3394989b854579875b38d45fffa7f8c89177f7698cd3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3395989b854579875b38d45fffa7f8c89177f7698cd3Brian King } else 3396989b854579875b38d45fffa7f8c89177f7698cd3Brian King tgt_dbg(tgt, "Sent ADISC\n"); 3397989b854579875b38d45fffa7f8c89177f7698cd3Brian King} 3398989b854579875b38d45fffa7f8c89177f7698cd3Brian King 3399989b854579875b38d45fffa7f8c89177f7698cd3Brian King/** 3400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target_done - Completion handler for Query Target MAD 3401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target_done(struct ibmvfc_event *evt) 3405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt = evt->tgt; 3407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *rsp = &evt->xfer_iu->query_tgt; 3409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 status = rsp->common.status; 34107d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (status) { 3415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Query Target succeeded\n"); 3417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = rsp->scsi_id; 3418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->scsi_id != tgt->scsi_id) 3419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3420989b854579875b38d45fffa7f8c89177f7698cd3Brian King else 3421989b854579875b38d45fffa7f8c89177f7698cd3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_adisc); 3422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 3427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rsp->status & IBMVFC_FABRIC_MAPPED) == IBMVFC_FABRIC_MAPPED && 3431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->error == IBMVFC_UNABLE_TO_PERFORM_REQ && 3432072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->fc_explain == IBMVFC_PORT_NAME_NOT_REG) 3433072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 3434072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 34357d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_tgt_init(tgt, ibmvfc_tgt_query_target); 343610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King else 343710e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT); 34387d0e462247241b8ec2d377306203b58c7f423553Brian King 34397d0e462247241b8ec2d377306203b58c7f423553Brian King tgt_log(tgt, level, "Query Target failed: %s (%x:%x) %s (%x) %s (%x) rc=0x%02X\n", 34407d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error, 34417d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_fc_type(rsp->fc_type), rsp->fc_type, 34427d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_gs_explain(rsp->fc_explain), rsp->fc_explain, status); 3443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_query_target - Initiate a Query Target for specified target 3453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_query_target(struct ibmvfc_target *tgt) 3457072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3458072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_query_tgt *query_tgt; 3459072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 3460072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt; 3461072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3462072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads >= disc_threads) 3463072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3464072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3465072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_get(&tgt->kref); 3466072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt = ibmvfc_get_event(vhost); 3467072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads++; 3468072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King evt->tgt = tgt; 3469072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_tgt_query_target_done, IBMVFC_MAD_FORMAT); 3470072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt = &evt->iu.query_tgt; 3471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(query_tgt, 0, sizeof(*query_tgt)); 3472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.version = 1; 3473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.opcode = IBMVFC_QUERY_TARGET; 3474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->common.length = sizeof(*query_tgt); 3475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King query_tgt->wwpn = tgt->ids.port_name; 3476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT); 3478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_send_event(evt, vhost, default_timeout)) { 3479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->discovery_threads--; 3480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE); 3481072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Sent Query Target\n"); 3484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_target - Allocate and initialize an ibmvfc target 3488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @scsi_id: SCSI ID to allocate target for 3490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id) 3495072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->scsi_id == scsi_id) { 3502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->need_login) 3503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unlock_out; 3505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 35097270b9bde5f382e730e1ef69d6c1b34d388df2b0Brian King tgt = mempool_alloc(vhost->tgt_pool, GFP_NOIO); 3510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!tgt) { 3511775a42ecf8b8a86b55173da27e6cc874af5b944dStephen Rothwell dev_err(vhost->dev, "Target allocation failure for scsi id %08llx\n", 3512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_id); 3513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 3514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 35160883e3b3a85b5860b7729f1279a52e95b87dea97Brian King memset(tgt, 0, sizeof(*tgt)); 3517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->scsi_id = scsi_id; 3518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->new_scsi_id = scsi_id; 3519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->vhost = vhost; 3520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->need_login = 1; 352110501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King tgt->cancel_key = vhost->task_set++; 352210501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King init_timer(&tgt->timer); 3523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_init(&tgt->kref); 3524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_implicit_logout); 3525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&tgt->queue, &vhost->targets); 3527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunlock_out: 3529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_targets - Allocate and initialize ibmvfc targets 3535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 3539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_targets(struct ibmvfc_host *vhost) 3541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int i, rc; 3543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King for (i = 0, rc = 0; !rc && i < vhost->num_targets; i++) 3545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = ibmvfc_alloc_target(vhost, 3546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf->scsi_id[i] & IBMVFC_DISC_TGT_SCSI_ID_MASK); 3547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets_done - Completion handler for discover targets MAD 3553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets_done(struct ibmvfc_event *evt) 3557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *rsp = &evt->xfer_iu->discover_targets; 3560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = rsp->common.status; 35617d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3562072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3563072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3564072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3565072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Discover Targets succeeded\n"); 3566072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->num_targets = rsp->num_written; 3567072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_ALLOC_TGTS); 3568072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3569072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 35707d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 35717d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "Discover Targets failed: %s (%x:%x)\n", 35727d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3573072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3574072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3575072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3576072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3577072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid Discover Targets response: 0x%x\n", mad_status); 3578072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3579072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3580072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3581072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3582072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3583072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3584072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3585072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3586072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3587072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_discover_targets - Send Discover Targets MAD 3588072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3589072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3590072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3591072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_discover_targets(struct ibmvfc_host *vhost) 3592072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3593072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_discover_targets *mad; 3594072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3595072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3596072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_discover_targets_done, IBMVFC_MAD_FORMAT); 3597072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.discover_targets; 3598072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(*mad)); 3599072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3600072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_DISC_TARGETS; 3601072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(*mad); 3602072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->bufflen = vhost->disc_buf_sz; 3603072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->disc_buf_dma; 3604072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = vhost->disc_buf_sz; 3605072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3606072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3607072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3608072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent discover targets\n"); 3609072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3610072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3611072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3612072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3613072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3614072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login_done - Completion handler for NPIV Login 3615072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @evt: ibmvfc event struct 3616072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3617072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3618072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login_done(struct ibmvfc_event *evt) 3619072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3620072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = evt->vhost; 3621072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King u32 mad_status = evt->xfer_iu->npiv_login.common.status; 3622072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_resp *rsp = &vhost->login_buf->resp; 3623072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned int npiv_max_sectors; 36247d0e462247241b8ec2d377306203b58c7f423553Brian King int level = IBMVFC_DEFAULT_LOG_LEVEL; 3625072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3626072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (mad_status) { 3627072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_SUCCESS: 3628072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3629072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3630072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_FAILED: 3631072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (ibmvfc_retry_cmd(rsp->status, rsp->error)) 36327d0e462247241b8ec2d377306203b58c7f423553Brian King level += ibmvfc_retry_host_init(vhost); 3633072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3634072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 36357d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_log(vhost, level, "NPIV Login failed: %s (%x:%x)\n", 36367d0e462247241b8ec2d377306203b58c7f423553Brian King ibmvfc_get_cmd_error(rsp->status, rsp->error), rsp->status, rsp->error); 3637072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3638072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3639072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_CRQ_ERROR: 3640072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_retry_host_init(vhost); 3641072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_MAD_DRIVER_FAILED: 3642072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3643072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3644072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3645072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Invalid NPIV Login response: 0x%x\n", mad_status); 3646072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3647072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event(evt); 3648072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3649072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3650072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3651072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->client_migrated = 0; 3652072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3653072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!(rsp->flags & IBMVFC_NATIVE_FC)) { 3654072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter does not support FC. %x\n", 3655072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->flags); 3656072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3657072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3658072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3659072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3660072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3661072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->max_cmds <= IBMVFC_NUM_INTERNAL_REQ) { 3662072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(vhost->dev, "Virtual adapter supported queue depth too small: %d\n", 3663072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->max_cmds); 3664072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3665072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3666072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3667072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3668072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 366979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->logged_in = 1; 3670072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King npiv_max_sectors = min((uint)(rsp->max_dma_len >> 9), IBMVFC_MAX_SECTORS); 3671072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_info(vhost->dev, "Host partition: %s, device: %s %s %s max sectors %u\n", 3672072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->partition_name, rsp->device_name, rsp->port_loc_code, 3673072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->drc_name, npiv_max_sectors); 3674072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3675072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_fabric_name(vhost->host) = rsp->node_name; 3676072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_node_name(vhost->host) = rsp->node_name; 3677072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_name(vhost->host) = rsp->port_name; 3678072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_id(vhost->host) = rsp->scsi_id; 3679072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_port_type(vhost->host) = FC_PORTTYPE_NPIV; 3680072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) = 0; 3681072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class1_parms[0] & 0x80000000) 3682072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS1; 3683072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class2_parms[0] & 0x80000000) 3684072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS2; 3685072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rsp->service_parms.class3_parms[0] & 0x80000000) 3686072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_supported_classes(vhost->host) |= FC_COS_CLASS3; 3687072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_maxframe_size(vhost->host) = 3688072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rsp->service_parms.common.bb_rcv_sz & 0x0fff; 3689072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3690072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->can_queue = rsp->max_cmds - IBMVFC_NUM_INTERNAL_REQ; 3691072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host->max_sectors = npiv_max_sectors; 3692072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 3693072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->work_wait_q); 3694072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3695072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3696072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3697072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_npiv_login - Sends NPIV login 3698072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3699072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3700072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3701072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_npiv_login(struct ibmvfc_host *vhost) 3702072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3703072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_npiv_login_mad *mad; 3704072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_event *evt = ibmvfc_get_event(vhost); 3705072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3706072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_gather_partition_info(vhost); 3707072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_login_info(vhost); 3708072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_event(evt, ibmvfc_npiv_login_done, IBMVFC_MAD_FORMAT); 3709072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3710072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memcpy(vhost->login_buf, &vhost->login_info, sizeof(vhost->login_info)); 3711072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad = &evt->iu.npiv_login; 3712072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King memset(mad, 0, sizeof(struct ibmvfc_npiv_login_mad)); 3713072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.version = 1; 3714072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.opcode = IBMVFC_NPIV_LOGIN; 3715072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->common.length = sizeof(struct ibmvfc_npiv_login_mad); 3716072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.va = vhost->login_buf_dma; 3717072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mad->buffer.len = sizeof(*vhost->login_buf); 3718072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3719072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT_WAIT); 3720072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3721072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 3722072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "Sent NPIV login\n"); 3723072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else 3724072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 3725072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 3726072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3727072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 372879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout_done - Completion handler for NPIV Logout 372979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 373079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 373179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 373279111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout_done(struct ibmvfc_event *evt) 373379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 373479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_host *vhost = evt->vhost; 373579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King u32 mad_status = evt->xfer_iu->npiv_logout.common.status; 373679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 373779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_free_event(evt); 373879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 373979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King switch (mad_status) { 374079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_SUCCESS: 374179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (list_empty(&vhost->sent) && 374279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->action == IBMVFC_HOST_ACTION_LOGO_WAIT) { 3743861890c62d46bd29c73d75fc907aeffd1c4eee06Brian King ibmvfc_init_host(vhost); 374479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King return; 374579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 374679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 374779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_FAILED: 374879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_NOT_SUPPORTED: 374979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_CRQ_ERROR: 375079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_MAD_DRIVER_FAILED: 375179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King default: 375279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "NPIV Logout failed. 0x%X\n", mad_status); 375379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 375479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King } 375579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 375679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_hard_reset_host(vhost); 375779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 375879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 375979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 376079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * ibmvfc_npiv_logout - Issue an NPIV Logout 376179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * @vhost: ibmvfc host struct 376279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King * 376379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King **/ 376479111d0899a122fa3cf0a2921292c3e6a25452d0Brian Kingstatic void ibmvfc_npiv_logout(struct ibmvfc_host *vhost) 376579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King{ 376679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_npiv_logout_mad *mad; 376779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King struct ibmvfc_event *evt; 376879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 376979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King evt = ibmvfc_get_event(vhost); 377079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_init_event(evt, ibmvfc_npiv_logout_done, IBMVFC_MAD_FORMAT); 377179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 377279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad = &evt->iu.npiv_logout; 377379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King memset(mad, 0, sizeof(*mad)); 377479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.version = 1; 377579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.opcode = IBMVFC_NPIV_LOGOUT; 377679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King mad->common.length = sizeof(struct ibmvfc_npiv_logout_mad); 377779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 377879111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_LOGO_WAIT); 377979111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 378079111d0899a122fa3cf0a2921292c3e6a25452d0Brian King if (!ibmvfc_send_event(evt, vhost, default_timeout)) 378179111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_dbg(vhost, "Sent NPIV logout\n"); 378279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King else 378379111d0899a122fa3cf0a2921292c3e6a25452d0Brian King ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD); 378479111d0899a122fa3cf0a2921292c3e6a25452d0Brian King} 378579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King 378679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King/** 3787072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_dev_init_to_do - Is there target initialization work to do? 3788072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3789072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3790072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3791072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3792072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3793072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_dev_init_to_do(struct ibmvfc_host *vhost) 3794072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3795072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3796072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3797072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3798072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT || 3799072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3800072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3801072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3802072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3803072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3804072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3805072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3806072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3807072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * __ibmvfc_work_to_do - Is there task level work to do? (no locking) 3808072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3809072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3810072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3811072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3812072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3813072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3814072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3815072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3816072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3817072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 3818072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3819072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3820072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 3821072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 382279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 3823072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3824072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 3825072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3826072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->discovery_threads == disc_threads) 3827072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3828072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3829072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) 3830072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3831072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3832072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT_WAIT) 3833072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 3834072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 383579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 3836072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3837072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 3838072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 383910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3840072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3841072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 3842072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3843072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 3844072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3845072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 1; 3846072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3847072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3848072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3849072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work_to_do - Is there task level work to do? 3850072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3851072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3852072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 3853072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 1 if work to do / 0 if not 3854072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3855072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work_to_do(struct ibmvfc_host *vhost) 3856072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3857072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3858072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 3859072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3860072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3861072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = __ibmvfc_work_to_do(vhost); 3862072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3863072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 3864072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3865072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3866072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3867072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_log_ae - Log async events if necessary 3868072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3869072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @events: events to log 3870072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3871072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3872072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events) 3873072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3874072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (events & IBMVFC_AE_RSCN) 3875072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_RSCN, 0); 3876072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKDOWN) && 3877072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state >= IBMVFC_HALTED) 3878072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 3879072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((events & IBMVFC_AE_LINKUP) && 3880072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->state == IBMVFC_INITIALIZING) 3881072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_host_post_event(vhost->host, fc_get_event_number(), FCH_EVT_LINKUP, 0); 3882072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3883072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3884072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3885072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_tgt_add_rport - Tell the FC transport about a new remote port 3886072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @tgt: ibmvfc target struct 3887072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3888072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3889072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) 3890072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3891072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = tgt->vhost; 389243c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 3893072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3894072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 389543c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Adding rport\n"); 389643c8da907ccc656935d1085701f4db83385d8a59Brian King rport = fc_remote_port_add(vhost->host, 0, &tgt->ids); 389743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 389843c8da907ccc656935d1085701f4db83385d8a59Brian King 389943c8da907ccc656935d1085701f4db83385d8a59Brian King if (rport && tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 390043c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Deleting rport\n"); 390143c8da907ccc656935d1085701f4db83385d8a59Brian King list_del(&tgt->queue); 39020883e3b3a85b5860b7729f1279a52e95b87dea97Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 390343c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_delete(rport); 390443c8da907ccc656935d1085701f4db83385d8a59Brian King del_timer_sync(&tgt->timer); 390543c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 39060883e3b3a85b5860b7729f1279a52e95b87dea97Brian King return; 39070883e3b3a85b5860b7729f1279a52e95b87dea97Brian King } 39080883e3b3a85b5860b7729f1279a52e95b87dea97Brian King 3909072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) { 3910072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add succeeded\n"); 391143c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->rport = rport; 3912072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->maxframe_size = tgt->service_parms.common.bb_rcv_sz & 0x0fff; 3913072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes = 0; 391452d7e861cc071688f5fa3ee1b6e94785adeff8dbBrian King tgt->target_id = rport->scsi_target_id; 3915072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class1_parms[0] & 0x80000000) 3916072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS1; 3917072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class2_parms[0] & 0x80000000) 3918072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS2; 3919072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->service_parms.class3_parms[0] & 0x80000000) 3920072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport->supported_classes |= FC_COS_CLASS3; 3921072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else 3922072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "rport add failed\n"); 3923072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3924072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 3925072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3926072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 3927072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_do_work - Do task level work 3928072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 3929072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 3930072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 3931072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_do_work(struct ibmvfc_host *vhost) 3932072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 3933072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_target *tgt; 3934072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 3935072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct fc_rport *rport; 3936072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3937072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_log_ae(vhost, vhost->events_to_log); 3938072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 3939072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->events_to_log = 0; 3940072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King switch (vhost->action) { 3941072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_NONE: 394279111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO_WAIT: 3943072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT_WAIT: 3944072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 394579111d0899a122fa3cf0a2921292c3e6a25452d0Brian King case IBMVFC_HOST_ACTION_LOGO: 394679111d0899a122fa3cf0a2921292c3e6a25452d0Brian King vhost->job_step(vhost); 394779111d0899a122fa3cf0a2921292c3e6a25452d0Brian King break; 3948072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_INIT: 3949072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(vhost->state != IBMVFC_INITIALIZING); 39501c41fa8288277e76785acb50f52bb2f39509f903Brian King if (vhost->delay_init) { 39511c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->delay_init = 0; 39521c41fa8288277e76785acb50f52bb2f39509f903Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3953d2131b33c7e07c2905ee2f2321cc4dae1928c483Brian King ssleep(15); 39541c41fa8288277e76785acb50f52bb2f39509f903Brian King return; 39551c41fa8288277e76785acb50f52bb2f39509f903Brian King } else 39561c41fa8288277e76785acb50f52bb2f39509f903Brian King vhost->job_step(vhost); 3957072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3958072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY: 3959072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) 3960072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_init_tgt(tgt, ibmvfc_tgt_query_target); 3961072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY_TGTS); 3962072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3963072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_QUERY_TGTS: 3964072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3965072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 3966072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 3967072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3968072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3969072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3970072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3971072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_dev_init_to_do(vhost)) 3972072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL); 3973072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 3974072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_DEL: 397510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King case IBMVFC_HOST_ACTION_TGT_DEL_FAILED: 3976072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 3977072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_DEL_RPORT) { 3978072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt_dbg(tgt, "Deleting rport\n"); 3979072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rport = tgt->rport; 3980072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->rport = NULL; 3981072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&tgt->queue); 3982072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 3983072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rport) 3984072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remote_port_delete(rport); 398510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King del_timer_sync(&tgt->timer); 3986072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 3987072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 3988072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3989072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 3990072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 3991072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (vhost->state == IBMVFC_INITIALIZING) { 399210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (vhost->action == IBMVFC_HOST_ACTION_TGT_DEL_FAILED) { 399343c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->reinit) { 399443c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->reinit = 0; 399543c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_block_requests(vhost->host); 399643c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_QUERY); 399743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 399843c8da907ccc656935d1085701f4db83385d8a59Brian King } else { 399943c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_state(vhost, IBMVFC_ACTIVE); 400043c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 400143c8da907ccc656935d1085701f4db83385d8a59Brian King wake_up(&vhost->init_wait_q); 400243c8da907ccc656935d1085701f4db83385d8a59Brian King schedule_work(&vhost->rport_add_work_q); 400343c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->init_retries = 0; 400443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 400543c8da907ccc656935d1085701f4db83385d8a59Brian King scsi_unblock_requests(vhost->host); 400643c8da907ccc656935d1085701f4db83385d8a59Brian King } 400743c8da907ccc656935d1085701f4db83385d8a59Brian King 400810e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King return; 400910e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } else { 401010e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_INIT); 401110e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King vhost->job_step = ibmvfc_discover_targets; 401210e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King } 4013072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } else { 4014072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE); 4015072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4016072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_unblock_requests(vhost->host); 4017072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King wake_up(&vhost->init_wait_q); 4018072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return; 4019072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4020072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4021072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_ALLOC_TGTS: 4022072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_INIT); 4023072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4024072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_alloc_targets(vhost); 4025072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4026072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4027072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King case IBMVFC_HOST_ACTION_TGT_INIT: 4028072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 4029072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (tgt->action == IBMVFC_TGT_ACTION_INIT) { 4030072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King tgt->job_step(tgt); 4031072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4032072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4033072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4034072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 403510e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King if (!ibmvfc_dev_init_to_do(vhost)) 403610e794996ed00a0f09ff0745f87e3a3dd5de4606Brian King ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_TGT_DEL_FAILED); 4037072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4038072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King default: 4039072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4040072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King }; 4041072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4042072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4043072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4044072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4045072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4046072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_work - Do task level work 4047072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @data: ibmvfc host struct 4048072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4049072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Returns: 4050072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero 4051072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4052072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_work(void *data) 4053072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4054072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = data; 4055072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4056072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4057072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King set_user_nice(current, -20); 4058072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4059072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King while (1) { 4060072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = wait_event_interruptible(vhost->work_wait_q, 4061072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_work_to_do(vhost)); 4062072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4063072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King BUG_ON(rc); 4064072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4065072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (kthread_should_stop()) 4066072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King break; 4067072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4068072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_do_work(vhost); 4069072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4070072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4071072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_dbg(vhost, "ibmvfc kthread exiting...\n"); 4072072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4073072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4074072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4075072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4076072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_init_crq - Initializes and registers CRQ with hypervisor 4077072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4078072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4079072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Allocates a page for messages, maps it for dma, and registers 4080072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * the crq with the hypervisor. 4081072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4082072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4083072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * zero on success / other on failure 4084072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4085072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_init_crq(struct ibmvfc_host *vhost) 4086072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4087072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc, retrc = -ENOMEM; 4088072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4089072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct vio_dev *vdev = to_vio_dev(dev); 4090072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_crq_queue *crq = &vhost->crq; 4091072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4092072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4093072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msgs = (struct ibmvfc_crq *)get_zeroed_page(GFP_KERNEL); 4094072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4095072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!crq->msgs) 4096072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4097072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4098072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->size = PAGE_SIZE / sizeof(*crq->msgs); 4099072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token = dma_map_single(dev, crq->msgs, 4100072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PAGE_SIZE, DMA_BIDIRECTIONAL); 4101072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 41028d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, crq->msg_token)) 4103072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto map_failed; 4104072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4105072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, 4106072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->msg_token, PAGE_SIZE); 4107072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4108072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_RESOURCE) 4109072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King /* maybe kexecing and resource is busy. try a reset */ 4110072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = rc = ibmvfc_reset_crq(vhost); 4111072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4112072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc == H_CLOSED) 4113072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Partner adapter not ready\n"); 4114072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King else if (rc) { 4115072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_warn(dev, "Error %d opening adapter\n", rc); 4116072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto reg_crq_failed; 4117072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4118072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4119072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King retrc = 0; 4120072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4121039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_init(&vhost->tasklet, (void *)ibmvfc_tasklet, (unsigned long)vhost); 4122039a08981a49e05f09db969cdd3f38f05a5df46fBrian King 4123072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = request_irq(vdev->irq, ibmvfc_interrupt, 0, IBMVFC_NAME, vhost))) { 4124072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq, rc); 4125072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4126072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4127072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4128072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = vio_enable_interrupts(vdev))) { 4129072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Error %d enabling interrupts\n", rc); 4130072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto req_irq_failed; 4131072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4132072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4133072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King crq->cur = 0; 4134072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4135072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4136072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4137072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreq_irq_failed: 4138039a08981a49e05f09db969cdd3f38f05a5df46fBrian King tasklet_kill(&vhost->tasklet); 4139072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King do { 4140072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 4141072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 4142072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingreg_crq_failed: 4143072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL); 4144072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmap_failed: 4145072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)crq->msgs); 4146072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return retrc; 4147072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4148072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4149072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4150072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_free_mem - Free memory for vhost 4151072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4152072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4153072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4154072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * none 4155072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4156072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void ibmvfc_free_mem(struct ibmvfc_host *vhost) 4157072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4158072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4159072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4160072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4161072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King mempool_destroy(vhost->tgt_pool); 4162072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4163072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, vhost->disc_buf_sz, vhost->disc_buf, 4164072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4165072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(vhost->dev, sizeof(*vhost->login_buf), 4166072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4167072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4168072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(vhost->dev, async_q->msg_token, 4169072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4170072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4171072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4172072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4173072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4174072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4175072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_alloc_mem - Allocate memory for vhost 4176072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vhost: ibmvfc host struct 4177072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4178072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4179072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4180072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4181072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_alloc_mem(struct ibmvfc_host *vhost) 4182072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4183072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_async_crq_queue *async_q = &vhost->async_crq; 4184072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = vhost->dev; 4185072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4186072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4187072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msgs = (struct ibmvfc_async_crq *)get_zeroed_page(GFP_KERNEL); 4188072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!async_q->msgs) { 4189072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate async queue.\n"); 4190072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto nomem; 4191072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4192072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4193072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size = PAGE_SIZE / sizeof(struct ibmvfc_async_crq); 4194072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->msg_token = dma_map_single(dev, async_q->msgs, 4195072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), 4196072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King DMA_BIDIRECTIONAL); 4197072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 41988d8bb39b9eba32dd70e87fd5ad5c5dd4ba118e06FUJITA Tomonori if (dma_mapping_error(dev, async_q->msg_token)) { 4199072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to map async queue\n"); 4200072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_async_crq; 4201072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4202072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4203072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->sg_pool = dma_pool_create(IBMVFC_NAME, dev, 4204072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King SG_ALL * sizeof(struct srp_direct_buf), 4205072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct srp_direct_buf), 0); 4206072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4207072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->sg_pool) { 4208072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to allocate sg pool\n"); 4209072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto unmap_async_crq; 4210072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4211072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4212072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf = dma_alloc_coherent(dev, sizeof(*vhost->login_buf), 4213072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->login_buf_dma, GFP_KERNEL); 4214072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4215072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->login_buf) { 4216072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate NPIV login buffer\n"); 4217072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_sg_pool; 4218072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4219072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4220072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_sz = sizeof(vhost->disc_buf->scsi_id[0]) * max_targets; 4221072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf = dma_alloc_coherent(dev, vhost->disc_buf_sz, 4222072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &vhost->disc_buf_dma, GFP_KERNEL); 4223072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4224072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->disc_buf) { 4225072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate Discover Targets buffer\n"); 4226072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_login_buffer; 4227072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4228072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4229072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->trace = kcalloc(IBMVFC_NUM_TRACE_ENTRIES, 4230072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_trace_entry), GFP_KERNEL); 4231072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4232072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->trace) 4233072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_disc_buffer; 4234072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4235d68866927ddd0ed3145cb3fba4a1c07ca5e4709dSage Weil vhost->tgt_pool = mempool_create_kmalloc_pool(IBMVFC_TGT_MEMPOOL_SZ, 4236072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sizeof(struct ibmvfc_target)); 4237072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4238072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!vhost->tgt_pool) { 4239072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate target memory pool\n"); 4240072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_trace; 4241072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4242072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4243072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4244072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4245072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4246072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_trace: 4247072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kfree(vhost->trace); 4248072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_disc_buffer: 4249072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, vhost->disc_buf_sz, vhost->disc_buf, 4250072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->disc_buf_dma); 4251072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_login_buffer: 4252072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_free_coherent(dev, sizeof(*vhost->login_buf), 4253072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->login_buf, vhost->login_buf_dma); 4254072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_sg_pool: 4255072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_pool_destroy(vhost->sg_pool); 4256072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingunmap_async_crq: 4257072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dma_unmap_single(dev, async_q->msg_token, 4258072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King async_q->size * sizeof(*async_q->msgs), DMA_BIDIRECTIONAL); 4259072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_async_crq: 4260072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King free_page((unsigned long)async_q->msgs); 4261072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingnomem: 4262072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4263072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4264072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4265072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4266072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 426743c8da907ccc656935d1085701f4db83385d8a59Brian King * ibmvfc_rport_add_thread - Worker thread for rport adds 426843c8da907ccc656935d1085701f4db83385d8a59Brian King * @work: work struct 426943c8da907ccc656935d1085701f4db83385d8a59Brian King * 427043c8da907ccc656935d1085701f4db83385d8a59Brian King **/ 427143c8da907ccc656935d1085701f4db83385d8a59Brian Kingstatic void ibmvfc_rport_add_thread(struct work_struct *work) 427243c8da907ccc656935d1085701f4db83385d8a59Brian King{ 427343c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_host *vhost = container_of(work, struct ibmvfc_host, 427443c8da907ccc656935d1085701f4db83385d8a59Brian King rport_add_work_q); 427543c8da907ccc656935d1085701f4db83385d8a59Brian King struct ibmvfc_target *tgt; 427643c8da907ccc656935d1085701f4db83385d8a59Brian King struct fc_rport *rport; 427743c8da907ccc656935d1085701f4db83385d8a59Brian King unsigned long flags; 427843c8da907ccc656935d1085701f4db83385d8a59Brian King int did_work; 427943c8da907ccc656935d1085701f4db83385d8a59Brian King 428043c8da907ccc656935d1085701f4db83385d8a59Brian King ENTER; 428143c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 428243c8da907ccc656935d1085701f4db83385d8a59Brian King do { 428343c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 0; 428443c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state != IBMVFC_ACTIVE) 428543c8da907ccc656935d1085701f4db83385d8a59Brian King break; 428643c8da907ccc656935d1085701f4db83385d8a59Brian King 428743c8da907ccc656935d1085701f4db83385d8a59Brian King list_for_each_entry(tgt, &vhost->targets, queue) { 428843c8da907ccc656935d1085701f4db83385d8a59Brian King if (tgt->add_rport) { 428943c8da907ccc656935d1085701f4db83385d8a59Brian King did_work = 1; 429043c8da907ccc656935d1085701f4db83385d8a59Brian King tgt->add_rport = 0; 429143c8da907ccc656935d1085701f4db83385d8a59Brian King kref_get(&tgt->kref); 429243c8da907ccc656935d1085701f4db83385d8a59Brian King rport = tgt->rport; 429343c8da907ccc656935d1085701f4db83385d8a59Brian King if (!rport) { 429443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 429543c8da907ccc656935d1085701f4db83385d8a59Brian King ibmvfc_tgt_add_rport(tgt); 429643c8da907ccc656935d1085701f4db83385d8a59Brian King } else if (get_device(&rport->dev)) { 429743c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 429843c8da907ccc656935d1085701f4db83385d8a59Brian King tgt_dbg(tgt, "Setting rport roles\n"); 429943c8da907ccc656935d1085701f4db83385d8a59Brian King fc_remote_port_rolechg(rport, tgt->ids.roles); 430043c8da907ccc656935d1085701f4db83385d8a59Brian King put_device(&rport->dev); 430143c8da907ccc656935d1085701f4db83385d8a59Brian King } 430243c8da907ccc656935d1085701f4db83385d8a59Brian King 430343c8da907ccc656935d1085701f4db83385d8a59Brian King kref_put(&tgt->kref, ibmvfc_release_tgt); 430443c8da907ccc656935d1085701f4db83385d8a59Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 430543c8da907ccc656935d1085701f4db83385d8a59Brian King break; 430643c8da907ccc656935d1085701f4db83385d8a59Brian King } 430743c8da907ccc656935d1085701f4db83385d8a59Brian King } 430843c8da907ccc656935d1085701f4db83385d8a59Brian King } while(did_work); 430943c8da907ccc656935d1085701f4db83385d8a59Brian King 431043c8da907ccc656935d1085701f4db83385d8a59Brian King if (vhost->state == IBMVFC_ACTIVE) 431143c8da907ccc656935d1085701f4db83385d8a59Brian King vhost->scan_complete = 1; 431243c8da907ccc656935d1085701f4db83385d8a59Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 431343c8da907ccc656935d1085701f4db83385d8a59Brian King LEAVE; 431443c8da907ccc656935d1085701f4db83385d8a59Brian King} 431543c8da907ccc656935d1085701f4db83385d8a59Brian King 431643c8da907ccc656935d1085701f4db83385d8a59Brian King/** 4317072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_probe - Adapter hot plug add entry point 4318072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4319072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @id: vio device id struct 4320072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4321072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4322072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / non-zero on failure 4323072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4324072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) 4325072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4326072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost; 4327072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct Scsi_Host *shost; 4328072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct device *dev = &vdev->dev; 4329072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc = -ENOMEM; 4330072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4331072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4332072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost = scsi_host_alloc(&driver_template, sizeof(*vhost)); 4333072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!shost) { 4334072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't allocate host data\n"); 4335072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto out; 4336072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4337072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4338072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->transportt = ibmvfc_transport_template; 4339072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->can_queue = max_requests; 4340072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_lun = max_lun; 4341072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_id = max_targets; 4342072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_sectors = IBMVFC_MAX_SECTORS; 4343072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->max_cmd_len = IBMVFC_MAX_CDB_LEN; 4344072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->unique_id = shost->host_no; 4345072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4346072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost = shost_priv(shost); 4347072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->sent); 4348072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->free); 4349072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King INIT_LIST_HEAD(&vhost->targets); 4350072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King sprintf(vhost->name, IBMVFC_NAME); 4351072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->host = shost; 4352072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->dev = dev; 4353072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->partition_number = -1; 4354072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->log_level = log_level; 435510501e1ce3d97cc84a8e29a3a139f74601b59b0fBrian King vhost->task_set = 1; 4356072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King strcpy(vhost->partition_name, "UNKNOWN"); 4357072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->work_wait_q); 4358072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King init_waitqueue_head(&vhost->init_wait_q); 435943c8da907ccc656935d1085701f4db83385d8a59Brian King INIT_WORK(&vhost->rport_add_work_q, ibmvfc_rport_add_thread); 4360072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4361072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_alloc_mem(vhost))) 4362072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_scsi_host; 4363072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4364072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vhost->work_thread = kthread_run(ibmvfc_work, vhost, "%s_%d", IBMVFC_NAME, 4365072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King shost->host_no); 4366072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4367072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (IS_ERR(vhost->work_thread)) { 4368072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't create kernel thread: %ld\n", 4369072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King PTR_ERR(vhost->work_thread)); 4370072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto free_host_mem; 4371072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4372072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4373072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_crq(vhost))) { 4374072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize crq. rc=%d\n", rc); 4375072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto kill_kthread; 4376072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4377072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4378072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_init_event_pool(vhost))) { 4379072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Couldn't initialize event pool. rc=%d\n", rc); 4380072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_crq; 4381072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4382072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4383072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = scsi_add_host(shost, dev))) 4384072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto release_event_pool; 4385072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4386072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if ((rc = ibmvfc_create_trace_file(&shost->shost_dev.kobj, 4387072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King &ibmvfc_trace_attr))) { 4388072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_err(dev, "Failed to create trace file. rc=%d\n", rc); 4389072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King goto remove_shost; 4390072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4391072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4392072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King dev_set_drvdata(dev, vhost); 4393072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4394072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_add_tail(&vhost->queue, &ibmvfc_head); 4395072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4396072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4397072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_send_crq_init(vhost); 4398072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_scan_host(shost); 4399072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4400072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4401072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingremove_shost: 4402072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(shost); 4403072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_event_pool: 4404072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4405072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingrelease_crq: 4406072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_release_crq_queue(vhost); 4407072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingkill_kthread: 4408072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4409072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_host_mem: 4410072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4411072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingfree_scsi_host: 4412072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(shost); 4413072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingout: 4414072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4415072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4416072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4417072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4418072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4419072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_remove - Adapter hot plug remove entry point 4420072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * @vdev: vio device struct 4421072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4422072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4423072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 4424072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4425072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int ibmvfc_remove(struct vio_dev *vdev) 4426072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4427072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King struct ibmvfc_host *vhost = dev_get_drvdata(&vdev->dev); 4428072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King unsigned long flags; 4429072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4430072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ENTER; 4431072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_remove_trace_file(&vhost->host->shost_dev.kobj, &ibmvfc_trace_attr); 44327043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 44337043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_lock_irqsave(vhost->host->host_lock, flags); 44342d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_link_down(vhost, IBMVFC_HOST_OFFLINE); 44357043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 44367043110550f19c1556ad18dc4d63b1c9eaf9e4fdBrian King 44372d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_wait_while_resetting(vhost); 44382d0da2a44e065a5bdd90bed2ebe0b9216c27f682Brian King ibmvfc_release_crq_queue(vhost); 4439072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King kthread_stop(vhost->work_thread); 4440072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_remove_host(vhost->host); 4441072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_remove_host(vhost->host); 4442072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4443072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock_irqsave(vhost->host->host_lock, flags); 4444072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_purge_requests(vhost, DID_ERROR); 4445072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_event_pool(vhost); 4446072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock_irqrestore(vhost->host->host_lock, flags); 4447072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4448072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_free_mem(vhost); 4449072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_lock(&ibmvfc_driver_lock); 4450072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King list_del(&vhost->queue); 4451072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King spin_unlock(&ibmvfc_driver_lock); 4452072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King scsi_host_put(vhost->host); 4453072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King LEAVE; 4454072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return 0; 4455072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4456072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 445739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King/** 445839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * ibmvfc_get_desired_dma - Calculate DMA resources needed by the driver 445939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * @vdev: vio device struct 446039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * 446139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Return value: 446239c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * Number of bytes the driver will need to DMA map at the same time in 446339c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King * order to perform well. 446439c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King */ 446539c1ffecc6aabcc8105602a95ce769f27bcf6048Brian Kingstatic unsigned long ibmvfc_get_desired_dma(struct vio_dev *vdev) 446639c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King{ 446739c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King unsigned long pool_dma = max_requests * sizeof(union ibmvfc_iu); 446839c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King return pool_dma + ((512 * 1024) * driver_template.cmd_per_lun); 446939c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King} 447039c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King 4471072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_device_id ibmvfc_device_table[] __devinitdata = { 4472072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King {"fcp", "IBM,vfc-client"}, 4473072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King { "", "" } 4474072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4475072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian KingMODULE_DEVICE_TABLE(vio, ibmvfc_device_table); 4476072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4477072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct vio_driver ibmvfc_driver = { 4478072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .id_table = ibmvfc_device_table, 4479072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .probe = ibmvfc_probe, 4480072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .remove = ibmvfc_remove, 448139c1ffecc6aabcc8105602a95ce769f27bcf6048Brian King .get_desired_dma = ibmvfc_get_desired_dma, 4482072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .driver = { 4483072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .name = IBMVFC_NAME, 4484072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .owner = THIS_MODULE, 4485072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King } 4486072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4487072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4488072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic struct fc_function_template ibmvfc_transport_functions = { 4489072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_fabric_name = 1, 4490072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_node_name = 1, 4491072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_name = 1, 4492072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_supported_classes = 1, 4493072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_type = 1, 4494072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_id = 1, 44959ab3610f9c24e7f303f1b0e6bb88a5f804ab847eBrian King .show_host_maxframe_size = 1, 4496072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4497072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_port_state = ibmvfc_get_host_port_state, 4498072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_port_state = 1, 4499072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4500072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_host_speed = ibmvfc_get_host_speed, 4501072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_host_speed = 1, 4502072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4503072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .issue_fc_host_lip = ibmvfc_issue_fc_host_lip, 4504072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .terminate_rport_io = ibmvfc_terminate_rport_io, 4505072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4506072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_maxframe_size = 1, 4507072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_supported_classes = 1, 4508072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4509072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .set_rport_dev_loss_tmo = ibmvfc_set_rport_dev_loss_tmo, 4510072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_rport_dev_loss_tmo = 1, 4511072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4512072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_node_name = ibmvfc_get_starget_node_name, 4513072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_node_name = 1, 4514072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4515072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_name = ibmvfc_get_starget_port_name, 4516072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_name = 1, 4517072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4518072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .get_starget_port_id = ibmvfc_get_starget_port_id, 4519072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King .show_starget_port_id = 1, 4520072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King}; 4521072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4522072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4523072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_init - Initialize the ibmvfc module 4524072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4525072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4526072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 0 on success / other on failure 4527072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4528072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic int __init ibmvfc_module_init(void) 4529072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4530072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King int rc; 4531072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4532072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!firmware_has_feature(FW_FEATURE_VIO)) 4533072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENODEV; 4534072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4535072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King printk(KERN_INFO IBMVFC_NAME": IBM Virtual Fibre Channel Driver version: %s %s\n", 4536072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King IBMVFC_DRIVER_VERSION, IBMVFC_DRIVER_DATE); 4537072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4538072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King ibmvfc_transport_template = fc_attach_transport(&ibmvfc_transport_functions); 4539072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (!ibmvfc_transport_template) 4540072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return -ENOMEM; 4541072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4542072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King rc = vio_register_driver(&ibmvfc_driver); 4543072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King if (rc) 4544072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4545072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King return rc; 4546072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4547072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4548072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King/** 4549072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * ibmvfc_module_exit - Teardown the ibmvfc module 4550072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * 4551072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * Return value: 4552072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King * nothing 4553072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King **/ 4554072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingstatic void __exit ibmvfc_module_exit(void) 4555072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King{ 4556072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King vio_unregister_driver(&ibmvfc_driver); 4557072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King fc_release_transport(ibmvfc_transport_template); 4558072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King} 4559072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian King 4560072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_init(ibmvfc_module_init); 4561072b91f9c6510d0ec4a49d07dbc318760c7da7b3Brian Kingmodule_exit(ibmvfc_module_exit); 4562