1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 37d01d069SVikas Chaudhary * Copyright (c) 2003-2010 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 85a0e3ad6STejun Heo #include <linux/slab.h> 9afaf5a2dSDavid Somayajulu 10afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 11afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 12afaf5a2dSDavid Somayajulu 13afaf5a2dSDavid Somayajulu #include "ql4_def.h" 14bee4fe8eSDavid C Somayajulu #include "ql4_version.h" 15bee4fe8eSDavid C Somayajulu #include "ql4_glbl.h" 16bee4fe8eSDavid C Somayajulu #include "ql4_dbg.h" 17bee4fe8eSDavid C Somayajulu #include "ql4_inline.h" 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * Driver version 21afaf5a2dSDavid Somayajulu */ 2247975477SAdrian Bunk static char qla4xxx_version_str[40]; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * SRB allocation cache 26afaf5a2dSDavid Somayajulu */ 27e18b890bSChristoph Lameter static struct kmem_cache *srb_cachep; 28afaf5a2dSDavid Somayajulu 29afaf5a2dSDavid Somayajulu /* 30afaf5a2dSDavid Somayajulu * Module parameter information and variables 31afaf5a2dSDavid Somayajulu */ 32afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 33f4f5df23SVikas Chaudhary module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 35f4f5df23SVikas Chaudhary "Don't reset the HBA for driver recovery \n" 36f4f5df23SVikas Chaudhary " 0 - It will reset HBA (Default)\n" 37f4f5df23SVikas Chaudhary " 1 - It will NOT reset HBA"); 38afaf5a2dSDavid Somayajulu 3911010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 40f4f5df23SVikas Chaudhary module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); 4111010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 42afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 43afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 44afaf5a2dSDavid Somayajulu 45f4f5df23SVikas Chaudhary int ql4xenablemsix = 1; 46f4f5df23SVikas Chaudhary module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); 47f4f5df23SVikas Chaudhary MODULE_PARM_DESC(ql4xenablemsix, 48f4f5df23SVikas Chaudhary "Set to enable MSI or MSI-X interrupt mechanism.\n" 49f4f5df23SVikas Chaudhary " 0 = enable INTx interrupt mechanism.\n" 50f4f5df23SVikas Chaudhary " 1 = enable MSI-X interrupt mechanism (Default).\n" 51f4f5df23SVikas Chaudhary " 2 = enable MSI interrupt mechanism."); 52477ffb9dSDavid C Somayajulu 53d510d965SMike Christie #define QL4_DEF_QDEPTH 32 548bb4033dSVikas Chaudhary static int ql4xmaxqdepth = QL4_DEF_QDEPTH; 558bb4033dSVikas Chaudhary module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR); 568bb4033dSVikas Chaudhary MODULE_PARM_DESC(ql4xmaxqdepth, 578bb4033dSVikas Chaudhary "Maximum queue depth to report for target devices.\n" 588bb4033dSVikas Chaudhary " Default: 32."); 59d510d965SMike Christie 60afaf5a2dSDavid Somayajulu /* 61afaf5a2dSDavid Somayajulu * SCSI host template entry points 62afaf5a2dSDavid Somayajulu */ 6347975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 64afaf5a2dSDavid Somayajulu 65afaf5a2dSDavid Somayajulu /* 66afaf5a2dSDavid Somayajulu * iSCSI template entry points 67afaf5a2dSDavid Somayajulu */ 682174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 692174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 702174a04eSMike Christie struct sockaddr *dst_addr); 71afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 72afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 73afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 74afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 75aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 76aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 77afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 785c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 79afaf5a2dSDavid Somayajulu 80afaf5a2dSDavid Somayajulu /* 81afaf5a2dSDavid Somayajulu * SCSI host template entry points 82afaf5a2dSDavid Somayajulu */ 83f281233dSJeff Garzik static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); 8409a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 85afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 86ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 87afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 88afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 89afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 90afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 91024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 92afaf5a2dSDavid Somayajulu 93f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 94f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 95f4f5df23SVikas Chaudhary 96afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 97afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 98afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 99afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 100afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 101afaf5a2dSDavid Somayajulu 10209a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 103afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 104ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 105afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1065c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 107afaf5a2dSDavid Somayajulu 108afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 109afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 110afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 111afaf5a2dSDavid Somayajulu 112921601b7SMike Christie .scan_finished = iscsi_scan_finished, 113024f801fSMike Christie .scan_start = qla4xxx_scan_start, 114921601b7SMike Christie 115afaf5a2dSDavid Somayajulu .this_id = -1, 116afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 117afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 118afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 119afaf5a2dSDavid Somayajulu 120afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 121afaf5a2dSDavid Somayajulu }; 122afaf5a2dSDavid Somayajulu 123afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 124afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 125afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 126d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 127d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 128aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 1293b2bef1fSVikas Chaudhary ISCSI_TARGET_NAME | ISCSI_TPGT | 1303b2bef1fSVikas Chaudhary ISCSI_TARGET_ALIAS, 1318ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 13222236961SMike Christie ISCSI_HOST_IPADDRESS | 1338ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 134afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 135afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 136afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 137aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 138afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 139afaf5a2dSDavid Somayajulu }; 140afaf5a2dSDavid Somayajulu 141afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 142afaf5a2dSDavid Somayajulu 1435c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1445c656af7SMike Christie { 1455c656af7SMike Christie struct iscsi_cls_session *session; 1465c656af7SMike Christie struct ddb_entry *ddb_entry; 1475c656af7SMike Christie 1485c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1495c656af7SMike Christie ddb_entry = session->dd_data; 1505c656af7SMike Christie 1515c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1525c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1535c656af7SMike Christie return BLK_EH_RESET_TIMER; 1545c656af7SMike Christie else 1555c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1565c656af7SMike Christie } 1575c656af7SMike Christie 158afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 159afaf5a2dSDavid Somayajulu { 160afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 161afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 162afaf5a2dSDavid Somayajulu 163568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 164afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 165afaf5a2dSDavid Somayajulu 1663013cea8SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " 167568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 168568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 1693013cea8SVikas Chaudhary QL4_SESS_RECOVERY_TMO)); 170afaf5a2dSDavid Somayajulu } 171568d303bSMike Christie } 172afaf5a2dSDavid Somayajulu 173aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 174aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 175aa1e93a2SMike Christie { 176aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 177aa1e93a2SMike Christie int len; 178aa1e93a2SMike Christie 179aa1e93a2SMike Christie switch (param) { 180aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1817ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 182aa1e93a2SMike Christie break; 18322236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 18422236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 18522236961SMike Christie ha->ip_address[1], ha->ip_address[2], 18622236961SMike Christie ha->ip_address[3]); 18722236961SMike Christie break; 1888ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 18922236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1908ad5781aSMike Christie break; 191aa1e93a2SMike Christie default: 192aa1e93a2SMike Christie return -ENOSYS; 193aa1e93a2SMike Christie } 194aa1e93a2SMike Christie 195aa1e93a2SMike Christie return len; 196aa1e93a2SMike Christie } 197aa1e93a2SMike Christie 198afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 199afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 200afaf5a2dSDavid Somayajulu { 201afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 202afaf5a2dSDavid Somayajulu int len; 203afaf5a2dSDavid Somayajulu 204afaf5a2dSDavid Somayajulu switch (param) { 205afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 206afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 207afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 208afaf5a2dSDavid Somayajulu break; 209afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 210afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 211afaf5a2dSDavid Somayajulu break; 2123b2bef1fSVikas Chaudhary case ISCSI_PARAM_TARGET_ALIAS: 2133b2bef1fSVikas Chaudhary len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 2143b2bef1fSVikas Chaudhary ddb_entry->iscsi_alias); 2153b2bef1fSVikas Chaudhary break; 216afaf5a2dSDavid Somayajulu default: 217afaf5a2dSDavid Somayajulu return -ENOSYS; 218afaf5a2dSDavid Somayajulu } 219afaf5a2dSDavid Somayajulu 220afaf5a2dSDavid Somayajulu return len; 221afaf5a2dSDavid Somayajulu } 222afaf5a2dSDavid Somayajulu 223afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 224afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 225afaf5a2dSDavid Somayajulu { 226afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 227afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 228afaf5a2dSDavid Somayajulu int len; 229afaf5a2dSDavid Somayajulu 230afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 231afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 232afaf5a2dSDavid Somayajulu 233afaf5a2dSDavid Somayajulu switch (param) { 234afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 235afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 236afaf5a2dSDavid Somayajulu break; 237afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 238afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 23963779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 240afaf5a2dSDavid Somayajulu break; 241afaf5a2dSDavid Somayajulu default: 242afaf5a2dSDavid Somayajulu return -ENOSYS; 243afaf5a2dSDavid Somayajulu } 244afaf5a2dSDavid Somayajulu 245afaf5a2dSDavid Somayajulu return len; 246afaf5a2dSDavid Somayajulu } 247afaf5a2dSDavid Somayajulu 2482174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2492174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2502174a04eSMike Christie struct sockaddr *dst_addr) 251afaf5a2dSDavid Somayajulu { 252afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 253afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 254afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 255afaf5a2dSDavid Somayajulu int ret = 0; 256afaf5a2dSDavid Somayajulu 257afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 258afaf5a2dSDavid Somayajulu 259afaf5a2dSDavid Somayajulu switch (type) { 260afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 261afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 262afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 263afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 264afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 265afaf5a2dSDavid Somayajulu ret = -EIO; 266afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 267afaf5a2dSDavid Somayajulu /* 268afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 269afaf5a2dSDavid Somayajulu */ 270afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 271afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 272afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 273afaf5a2dSDavid Somayajulu ret = -EIO; 274afaf5a2dSDavid Somayajulu } else 275afaf5a2dSDavid Somayajulu ret = -ENOSYS; 276afaf5a2dSDavid Somayajulu break; 277afaf5a2dSDavid Somayajulu default: 278afaf5a2dSDavid Somayajulu ret = -ENOSYS; 279afaf5a2dSDavid Somayajulu } 280afaf5a2dSDavid Somayajulu return ret; 281afaf5a2dSDavid Somayajulu } 282afaf5a2dSDavid Somayajulu 283afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 284afaf5a2dSDavid Somayajulu { 285afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 286afaf5a2dSDavid Somayajulu return; 287afaf5a2dSDavid Somayajulu 288afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 28926974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 290afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 291afaf5a2dSDavid Somayajulu } 292afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 293afaf5a2dSDavid Somayajulu } 294afaf5a2dSDavid Somayajulu 295afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 296afaf5a2dSDavid Somayajulu { 297afaf5a2dSDavid Somayajulu int err; 298afaf5a2dSDavid Somayajulu 2993013cea8SVikas Chaudhary ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO; 3003013cea8SVikas Chaudhary 301afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 302afaf5a2dSDavid Somayajulu if (err) { 303afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 304afaf5a2dSDavid Somayajulu return err; 305afaf5a2dSDavid Somayajulu } 306afaf5a2dSDavid Somayajulu 3075d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 308afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 309afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 310afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 311afaf5a2dSDavid Somayajulu return -ENOMEM; 312afaf5a2dSDavid Somayajulu } 313b635930dSMike Christie 314b635930dSMike Christie /* finally ready to go */ 315b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 316afaf5a2dSDavid Somayajulu return 0; 317afaf5a2dSDavid Somayajulu } 318afaf5a2dSDavid Somayajulu 319afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 320afaf5a2dSDavid Somayajulu { 321afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 322afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 323afaf5a2dSDavid Somayajulu 3245d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3255d91e209SMike Christie sizeof(struct ddb_entry)); 326afaf5a2dSDavid Somayajulu if (!sess) 327afaf5a2dSDavid Somayajulu return NULL; 328afaf5a2dSDavid Somayajulu 329afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 330afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 331afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 332afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 333afaf5a2dSDavid Somayajulu return ddb_entry; 334afaf5a2dSDavid Somayajulu } 335afaf5a2dSDavid Somayajulu 336024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 337024f801fSMike Christie { 338024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 339024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 340024f801fSMike Christie 341024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 342024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 343024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 344024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 345024f801fSMike Christie } 346024f801fSMike Christie } 347024f801fSMike Christie 348afaf5a2dSDavid Somayajulu /* 349afaf5a2dSDavid Somayajulu * Timer routines 350afaf5a2dSDavid Somayajulu */ 351afaf5a2dSDavid Somayajulu 352afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 353afaf5a2dSDavid Somayajulu unsigned long interval) 354afaf5a2dSDavid Somayajulu { 355afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 356afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 357afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 358afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 359afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 360afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 361afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 362afaf5a2dSDavid Somayajulu ha->timer_active = 1; 363afaf5a2dSDavid Somayajulu } 364afaf5a2dSDavid Somayajulu 365afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 366afaf5a2dSDavid Somayajulu { 367afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 368afaf5a2dSDavid Somayajulu ha->timer_active = 0; 369afaf5a2dSDavid Somayajulu } 370afaf5a2dSDavid Somayajulu 371afaf5a2dSDavid Somayajulu /*** 372afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 373afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 374afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 375afaf5a2dSDavid Somayajulu * 376f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 377afaf5a2dSDavid Somayajulu **/ 378afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 379afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 380afaf5a2dSDavid Somayajulu { 381f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 382afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 383f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 384f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 385f4f5df23SVikas Chaudhary } else 386f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 387f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 388f4f5df23SVikas Chaudhary 389b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 390e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 391afaf5a2dSDavid Somayajulu } 392afaf5a2dSDavid Somayajulu 393f4f5df23SVikas Chaudhary /** 394f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 395f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 396f4f5df23SVikas Chaudhary * 397f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 398f4f5df23SVikas Chaudhary **/ 399f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 400f4f5df23SVikas Chaudhary { 401f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 402f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 403f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 404f4f5df23SVikas Chaudhary } 405f4f5df23SVikas Chaudhary } 406f4f5df23SVikas Chaudhary 407afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 408afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 409afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 410afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 411afaf5a2dSDavid Somayajulu { 412afaf5a2dSDavid Somayajulu struct srb *srb; 413afaf5a2dSDavid Somayajulu 414afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 415afaf5a2dSDavid Somayajulu if (!srb) 416afaf5a2dSDavid Somayajulu return srb; 417afaf5a2dSDavid Somayajulu 41809a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 419afaf5a2dSDavid Somayajulu srb->ha = ha; 420afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 421afaf5a2dSDavid Somayajulu srb->cmd = cmd; 422afaf5a2dSDavid Somayajulu srb->flags = 0; 4235369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 424afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 425afaf5a2dSDavid Somayajulu 426afaf5a2dSDavid Somayajulu return srb; 427afaf5a2dSDavid Somayajulu } 428afaf5a2dSDavid Somayajulu 429afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 430afaf5a2dSDavid Somayajulu { 431afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 432afaf5a2dSDavid Somayajulu 433afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4345f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 435afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 436afaf5a2dSDavid Somayajulu } 4375369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 438afaf5a2dSDavid Somayajulu } 439afaf5a2dSDavid Somayajulu 44009a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 441afaf5a2dSDavid Somayajulu { 44209a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 443afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 44409a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 445afaf5a2dSDavid Somayajulu 446afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 447afaf5a2dSDavid Somayajulu 448afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 449afaf5a2dSDavid Somayajulu 450afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 451afaf5a2dSDavid Somayajulu } 452afaf5a2dSDavid Somayajulu 453afaf5a2dSDavid Somayajulu /** 454afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 455afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 456afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 457afaf5a2dSDavid Somayajulu * that the command has been processed. 458afaf5a2dSDavid Somayajulu * 459afaf5a2dSDavid Somayajulu * Remarks: 460afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 461afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 462afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 463afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 464afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 465afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 466afaf5a2dSDavid Somayajulu **/ 467f281233dSJeff Garzik static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, 468afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 469afaf5a2dSDavid Somayajulu { 470afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 471afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4727fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 473afaf5a2dSDavid Somayajulu struct srb *srb; 474afaf5a2dSDavid Somayajulu int rval; 475afaf5a2dSDavid Somayajulu 4762232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 4772232be0dSLalit Chandivade if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) 4782232be0dSLalit Chandivade cmd->result = DID_NO_CONNECT << 16; 4792232be0dSLalit Chandivade else 4802232be0dSLalit Chandivade cmd->result = DID_REQUEUE << 16; 4812232be0dSLalit Chandivade goto qc_fail_command; 4822232be0dSLalit Chandivade } 4832232be0dSLalit Chandivade 4847fb1921bSMike Christie if (!sess) { 4857fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4867fb1921bSMike Christie goto qc_fail_command; 4877fb1921bSMike Christie } 4887fb1921bSMike Christie 4897fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4907fb1921bSMike Christie if (rval) { 4917fb1921bSMike Christie cmd->result = rval; 4927fb1921bSMike Christie goto qc_fail_command; 4937fb1921bSMike Christie } 4947fb1921bSMike Christie 495afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 496afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 497afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 498afaf5a2dSDavid Somayajulu goto qc_fail_command; 499afaf5a2dSDavid Somayajulu } 500c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 501afaf5a2dSDavid Somayajulu } 502afaf5a2dSDavid Somayajulu 503f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 504f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 505f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 506f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 507f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 508f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 509f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 510477ffb9dSDavid C Somayajulu goto qc_host_busy; 511477ffb9dSDavid C Somayajulu 512afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 513afaf5a2dSDavid Somayajulu 514afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 515afaf5a2dSDavid Somayajulu if (!srb) 516afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 517afaf5a2dSDavid Somayajulu 518afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 519afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 520afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 521afaf5a2dSDavid Somayajulu 522afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 523afaf5a2dSDavid Somayajulu return 0; 524afaf5a2dSDavid Somayajulu 525afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 526afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 527afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 528afaf5a2dSDavid Somayajulu 529afaf5a2dSDavid Somayajulu qc_host_busy_lock: 530afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 531afaf5a2dSDavid Somayajulu 532afaf5a2dSDavid Somayajulu qc_host_busy: 533afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 534afaf5a2dSDavid Somayajulu 535afaf5a2dSDavid Somayajulu qc_fail_command: 536afaf5a2dSDavid Somayajulu done(cmd); 537afaf5a2dSDavid Somayajulu 538afaf5a2dSDavid Somayajulu return 0; 539afaf5a2dSDavid Somayajulu } 540afaf5a2dSDavid Somayajulu 541f281233dSJeff Garzik static DEF_SCSI_QCMD(qla4xxx_queuecommand) 542f281233dSJeff Garzik 543afaf5a2dSDavid Somayajulu /** 544afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 545afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 546afaf5a2dSDavid Somayajulu * 547afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 548afaf5a2dSDavid Somayajulu **/ 549afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 550afaf5a2dSDavid Somayajulu { 551afaf5a2dSDavid Somayajulu if (ha->queues) 552afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 553afaf5a2dSDavid Somayajulu ha->queues_dma); 554afaf5a2dSDavid Somayajulu 555afaf5a2dSDavid Somayajulu ha->queues_len = 0; 556afaf5a2dSDavid Somayajulu ha->queues = NULL; 557afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 558afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 559afaf5a2dSDavid Somayajulu ha->request_dma = 0; 560afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 561afaf5a2dSDavid Somayajulu ha->response_dma = 0; 562afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 563afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 564afaf5a2dSDavid Somayajulu 565afaf5a2dSDavid Somayajulu /* Free srb pool. */ 566afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 567afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 568afaf5a2dSDavid Somayajulu 569afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 570afaf5a2dSDavid Somayajulu 571afaf5a2dSDavid Somayajulu /* release io space registers */ 572f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 573f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 574f4f5df23SVikas Chaudhary iounmap( 575f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 576f4f5df23SVikas Chaudhary } else if (ha->reg) 577afaf5a2dSDavid Somayajulu iounmap(ha->reg); 578afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 579afaf5a2dSDavid Somayajulu } 580afaf5a2dSDavid Somayajulu 581afaf5a2dSDavid Somayajulu /** 582afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 583afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 584afaf5a2dSDavid Somayajulu * 585afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 586afaf5a2dSDavid Somayajulu * for srbs. 587afaf5a2dSDavid Somayajulu **/ 588afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 589afaf5a2dSDavid Somayajulu { 590afaf5a2dSDavid Somayajulu unsigned long align; 591afaf5a2dSDavid Somayajulu 592afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 593afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 594afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 595afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 596afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 597afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 598afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 599afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 600afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 601c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 602afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 603afaf5a2dSDavid Somayajulu 604afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 605afaf5a2dSDavid Somayajulu } 606afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 607afaf5a2dSDavid Somayajulu 608afaf5a2dSDavid Somayajulu /* 609afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 610afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 611afaf5a2dSDavid Somayajulu */ 612afaf5a2dSDavid Somayajulu align = 0; 613afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 614afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 615afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 616afaf5a2dSDavid Somayajulu 617afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 618afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 619afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 620afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 621afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 622afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 623afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 624afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 625afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 626afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 627afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 628afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 629afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 630afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 631afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 632afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 633afaf5a2dSDavid Somayajulu 634afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 635afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 636afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 637afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 638c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 639afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 640afaf5a2dSDavid Somayajulu 641afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 642afaf5a2dSDavid Somayajulu } 643afaf5a2dSDavid Somayajulu 644afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 645afaf5a2dSDavid Somayajulu 646afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 647afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 648afaf5a2dSDavid Somayajulu return QLA_ERROR; 649afaf5a2dSDavid Somayajulu } 650afaf5a2dSDavid Somayajulu 651afaf5a2dSDavid Somayajulu /** 652f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 653f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 654f4f5df23SVikas Chaudhary * 655f4f5df23SVikas Chaudhary * Context: Interrupt 656f4f5df23SVikas Chaudhary **/ 657f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 658f4f5df23SVikas Chaudhary { 659f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 660f4f5df23SVikas Chaudhary 661f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 6622232be0dSLalit Chandivade /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ 6632232be0dSLalit Chandivade if (fw_heartbeat_counter == 0xffffffff) { 6642232be0dSLalit Chandivade DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " 6652232be0dSLalit Chandivade "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", 6662232be0dSLalit Chandivade ha->host_no, __func__)); 6672232be0dSLalit Chandivade return; 6682232be0dSLalit Chandivade } 669f4f5df23SVikas Chaudhary 670f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 671f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 672f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 673f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 674f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 675f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 676f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 67721033639SNilesh Javali 678f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 679f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 680f4f5df23SVikas Chaudhary * DPC */ 681f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 682f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 683f4f5df23SVikas Chaudhary else { 684f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 685f4f5df23SVikas Chaudhary ha->host_no, __func__); 686f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 687f4f5df23SVikas Chaudhary } 688f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 68921033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 690f4f5df23SVikas Chaudhary } 69199457d75SLalit Chandivade } else 69299457d75SLalit Chandivade ha->seconds_since_last_heartbeat = 0; 69399457d75SLalit Chandivade 694f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 695f4f5df23SVikas Chaudhary } 696f4f5df23SVikas Chaudhary 697f4f5df23SVikas Chaudhary /** 698f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 699f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 700f4f5df23SVikas Chaudhary * 701f4f5df23SVikas Chaudhary * Context: Interrupt 702f4f5df23SVikas Chaudhary **/ 703f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 704f4f5df23SVikas Chaudhary { 705f4f5df23SVikas Chaudhary uint32_t dev_state; 706f4f5df23SVikas Chaudhary 707f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 708f4f5df23SVikas Chaudhary 709f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 710d56a1f7bSLalit Chandivade if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 711d56a1f7bSLalit Chandivade test_bit(DPC_RESET_HA, &ha->dpc_flags) || 712d56a1f7bSLalit Chandivade test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags))) { 713f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 714f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 7153930b8c1SVikas Chaudhary if (!ql4xdontresethba) { 7163930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: " 7173930b8c1SVikas Chaudhary "NEED RESET!\n", __func__); 718f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 719f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 72021033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 7213930b8c1SVikas Chaudhary } 722f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 723f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 7243930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", 7253930b8c1SVikas Chaudhary __func__); 726f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 727f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 728f4f5df23SVikas Chaudhary } else { 729f4f5df23SVikas Chaudhary /* Check firmware health */ 730f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 731f4f5df23SVikas Chaudhary } 732f4f5df23SVikas Chaudhary } 733f4f5df23SVikas Chaudhary } 734f4f5df23SVikas Chaudhary 735f4f5df23SVikas Chaudhary /** 736afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 737afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 738afaf5a2dSDavid Somayajulu **/ 739afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 740afaf5a2dSDavid Somayajulu { 741afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 742afaf5a2dSDavid Somayajulu int start_dpc = 0; 7432232be0dSLalit Chandivade uint16_t w; 7442232be0dSLalit Chandivade 7452232be0dSLalit Chandivade /* If we are in the middle of AER/EEH processing 7462232be0dSLalit Chandivade * skip any processing and reschedule the timer 7472232be0dSLalit Chandivade */ 7482232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 7492232be0dSLalit Chandivade mod_timer(&ha->timer, jiffies + HZ); 7502232be0dSLalit Chandivade return; 7512232be0dSLalit Chandivade } 7522232be0dSLalit Chandivade 7532232be0dSLalit Chandivade /* Hardware read to trigger an EEH error during mailbox waits. */ 7542232be0dSLalit Chandivade if (!pci_channel_offline(ha->pdev)) 7552232be0dSLalit Chandivade pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); 756afaf5a2dSDavid Somayajulu 757f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 758f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 759f4f5df23SVikas Chaudhary } 760f4f5df23SVikas Chaudhary 761afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 762afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 763afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 764afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 765afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 766afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 767afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 768afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 769afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 770afaf5a2dSDavid Somayajulu == 0) { 771afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 772afaf5a2dSDavid Somayajulu retry_relogin_timer, 773afaf5a2dSDavid Somayajulu INVALID_ENTRY); 774afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 775afaf5a2dSDavid Somayajulu &ha->dpc_flags); 776afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 777f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 778afaf5a2dSDavid Somayajulu " login device\n", 779afaf5a2dSDavid Somayajulu ha->host_no, __func__, 780afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 781afaf5a2dSDavid Somayajulu } else 782afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 783afaf5a2dSDavid Somayajulu retry_relogin_timer); 784afaf5a2dSDavid Somayajulu } 785afaf5a2dSDavid Somayajulu } 786afaf5a2dSDavid Somayajulu 787afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 788afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 789afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 790afaf5a2dSDavid Somayajulu /* 791afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 792afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 793afaf5a2dSDavid Somayajulu */ 794afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 795afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 796afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 797afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 798afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 799afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 800f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 801afaf5a2dSDavid Somayajulu " timed out-retrying" 802afaf5a2dSDavid Somayajulu " relogin (%d)\n", 803afaf5a2dSDavid Somayajulu ha->host_no, 804afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 805afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 806afaf5a2dSDavid Somayajulu relogin_retry_count)) 807afaf5a2dSDavid Somayajulu ); 808afaf5a2dSDavid Somayajulu start_dpc++; 809f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 810cd09b2c3SJustin P. Mattock "initiate relogin after" 811afaf5a2dSDavid Somayajulu " %d seconds\n", 812afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 813afaf5a2dSDavid Somayajulu ddb_entry->target, 814afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 815afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 816afaf5a2dSDavid Somayajulu ); 817afaf5a2dSDavid Somayajulu 818afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 819afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 820afaf5a2dSDavid Somayajulu } 821afaf5a2dSDavid Somayajulu } 822afaf5a2dSDavid Somayajulu } 823afaf5a2dSDavid Somayajulu 824f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 825afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 826afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 827afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 828afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 829afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 830afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 831afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 832afaf5a2dSDavid Somayajulu } 833f4f5df23SVikas Chaudhary } 834afaf5a2dSDavid Somayajulu 835afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 836afaf5a2dSDavid Somayajulu if ((start_dpc || 837afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 838afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 839afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 840f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 841afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 842afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 843065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 844f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 845f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 846afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 847f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags) && 848afaf5a2dSDavid Somayajulu ha->dpc_thread) { 849afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 850afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 851afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 852f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 853afaf5a2dSDavid Somayajulu } 854afaf5a2dSDavid Somayajulu 855afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 856afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 857afaf5a2dSDavid Somayajulu 858afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 859afaf5a2dSDavid Somayajulu } 860afaf5a2dSDavid Somayajulu 861afaf5a2dSDavid Somayajulu /** 862afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 863afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 864afaf5a2dSDavid Somayajulu * 865afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 866afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 867afaf5a2dSDavid Somayajulu **/ 868afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 869afaf5a2dSDavid Somayajulu { 870afaf5a2dSDavid Somayajulu uint32_t index = 0; 871afaf5a2dSDavid Somayajulu unsigned long flags; 872afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 873afaf5a2dSDavid Somayajulu 874f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 875f4f5df23SVikas Chaudhary 876f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 877f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 878f4f5df23SVikas Chaudhary 879f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 880afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 881afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 882afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 883afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 884a1e0063dSMike Christie /* 885a1e0063dSMike Christie * We cannot just check if the index is valid, 886a1e0063dSMike Christie * becase if we are run from the scsi eh, then 887a1e0063dSMike Christie * the scsi/block layer is going to prevent 888a1e0063dSMike Christie * the tag from being released. 889a1e0063dSMike Christie */ 890a1e0063dSMike Christie if (cmd != NULL && CMD_SP(cmd)) 891afaf5a2dSDavid Somayajulu break; 892afaf5a2dSDavid Somayajulu } 893afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 894afaf5a2dSDavid Somayajulu 895afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 896f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 897f4f5df23SVikas Chaudhary return QLA_SUCCESS; 898afaf5a2dSDavid Somayajulu 899afaf5a2dSDavid Somayajulu msleep(1000); 900afaf5a2dSDavid Somayajulu } 901f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 902f4f5df23SVikas Chaudhary * return ERROR. */ 903f4f5df23SVikas Chaudhary return QLA_ERROR; 904afaf5a2dSDavid Somayajulu } 905afaf5a2dSDavid Somayajulu 906f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 907afaf5a2dSDavid Somayajulu { 908afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 909477ffb9dSDavid C Somayajulu unsigned long flags = 0; 910477ffb9dSDavid C Somayajulu 911477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 912afaf5a2dSDavid Somayajulu 913f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 914f4f5df23SVikas Chaudhary return QLA_ERROR; 915f4f5df23SVikas Chaudhary 916afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 917afaf5a2dSDavid Somayajulu 918afaf5a2dSDavid Somayajulu /* 919afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 920afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 921afaf5a2dSDavid Somayajulu */ 922afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 923afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 924afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 925afaf5a2dSDavid Somayajulu 926afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 927afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 928afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 929afaf5a2dSDavid Somayajulu 930afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 931f4f5df23SVikas Chaudhary return QLA_SUCCESS; 932477ffb9dSDavid C Somayajulu } 933477ffb9dSDavid C Somayajulu 934477ffb9dSDavid C Somayajulu /** 935477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 936477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 937477ffb9dSDavid C Somayajulu **/ 938477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 939477ffb9dSDavid C Somayajulu { 940477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 941477ffb9dSDavid C Somayajulu unsigned long flags = 0; 942f931c534SVikas Chaudhary int status; 943477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 944477ffb9dSDavid C Somayajulu 945f931c534SVikas Chaudhary status = qla4xxx_hw_reset(ha); 946f931c534SVikas Chaudhary if (status != QLA_SUCCESS) 947f931c534SVikas Chaudhary return status; 948afaf5a2dSDavid Somayajulu 949f931c534SVikas Chaudhary status = QLA_ERROR; 950afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 951afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 952afaf5a2dSDavid Somayajulu do { 953afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 954afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 955afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 956afaf5a2dSDavid Somayajulu 957afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 958afaf5a2dSDavid Somayajulu break; 959afaf5a2dSDavid Somayajulu 960afaf5a2dSDavid Somayajulu msleep(1000); 961afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 962afaf5a2dSDavid Somayajulu 963afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 964afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 965afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 966afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 967afaf5a2dSDavid Somayajulu ha->host_no)); 968afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 969afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 970afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 971afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 972afaf5a2dSDavid Somayajulu } 973afaf5a2dSDavid Somayajulu 974afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 975afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 976afaf5a2dSDavid Somayajulu do { 977afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 978afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 979afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 980afaf5a2dSDavid Somayajulu 981afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 982afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 983afaf5a2dSDavid Somayajulu break; 984afaf5a2dSDavid Somayajulu } 985afaf5a2dSDavid Somayajulu 986afaf5a2dSDavid Somayajulu msleep(1000); 987afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 988afaf5a2dSDavid Somayajulu 989afaf5a2dSDavid Somayajulu /* 990afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 991afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 992afaf5a2dSDavid Somayajulu */ 993afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 994afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 995afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 996afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 997afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 998afaf5a2dSDavid Somayajulu } 999afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1000afaf5a2dSDavid Somayajulu 1001afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 1002afaf5a2dSDavid Somayajulu * function is also enabled. 1003afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 1004afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 1005afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 1006afaf5a2dSDavid Somayajulu */ 1007afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 1008afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 1009afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1010afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 1011afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1012afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1013afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1014afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1015afaf5a2dSDavid Somayajulu do { 1016afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1017afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1018afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1019afaf5a2dSDavid Somayajulu 1020afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 1021afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1022afaf5a2dSDavid Somayajulu break; 1023afaf5a2dSDavid Somayajulu } 1024afaf5a2dSDavid Somayajulu 1025afaf5a2dSDavid Somayajulu msleep(1000); 1026afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1027afaf5a2dSDavid Somayajulu } 1028afaf5a2dSDavid Somayajulu 1029afaf5a2dSDavid Somayajulu return status; 1030afaf5a2dSDavid Somayajulu } 1031afaf5a2dSDavid Somayajulu 1032afaf5a2dSDavid Somayajulu /** 1033f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 1034afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1035f4f5df23SVikas Chaudhary * @res: returned scsi status 1036afaf5a2dSDavid Somayajulu * 1037afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 1038afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 1039afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 1040afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 1041afaf5a2dSDavid Somayajulu **/ 1042f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1043afaf5a2dSDavid Somayajulu { 1044afaf5a2dSDavid Somayajulu struct srb *srb; 1045afaf5a2dSDavid Somayajulu int i; 1046afaf5a2dSDavid Somayajulu unsigned long flags; 1047afaf5a2dSDavid Somayajulu 1048afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1049afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1050afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1051afaf5a2dSDavid Somayajulu if (srb != NULL) { 1052f4f5df23SVikas Chaudhary srb->cmd->result = res; 105309a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1054afaf5a2dSDavid Somayajulu } 1055afaf5a2dSDavid Somayajulu } 1056afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1057afaf5a2dSDavid Somayajulu } 1058afaf5a2dSDavid Somayajulu 1059f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1060f4f5df23SVikas Chaudhary { 1061f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1062f4f5df23SVikas Chaudhary 1063f4f5df23SVikas Chaudhary /* Disable the board */ 1064f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1065f4f5df23SVikas Chaudhary 1066f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1067f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1068f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1069f4f5df23SVikas Chaudhary } 1070f4f5df23SVikas Chaudhary 1071afaf5a2dSDavid Somayajulu /** 1072afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1073afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1074afaf5a2dSDavid Somayajulu **/ 1075f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1076afaf5a2dSDavid Somayajulu { 1077f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1078f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1079afaf5a2dSDavid Somayajulu 1080afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1081f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1082afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 108350a29aecSMike Christie 1084f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1085afaf5a2dSDavid Somayajulu 1086f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1087afaf5a2dSDavid Somayajulu 1088f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1089f4f5df23SVikas Chaudhary reset_chip = 1; 1090afaf5a2dSDavid Somayajulu 1091f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1092f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1093f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1094f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1095f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1096afaf5a2dSDavid Somayajulu } 1097afaf5a2dSDavid Somayajulu 1098f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1099f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1100f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1101f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1102f4f5df23SVikas Chaudhary 1103f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1104f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1105f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1106f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1107f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 11082bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1109f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1110f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1111f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1112f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1113f4f5df23SVikas Chaudhary } else { 1114f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1115f4f5df23SVikas Chaudhary * reset the entire chip */ 1116f4f5df23SVikas Chaudhary reset_chip = 1; 1117f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1118f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1119f4f5df23SVikas Chaudhary } 1120f4f5df23SVikas Chaudhary } 1121f4f5df23SVikas Chaudhary 1122f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1123f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1124f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1125f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 11262bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1127f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1128f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1129f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1130f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1131f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1132f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1133f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1134f4f5df23SVikas Chaudhary } 1135f4f5df23SVikas Chaudhary 1136f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1137f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1138f4f5df23SVikas Chaudhary 1139f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1140f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1141f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1142f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1143f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1144f4f5df23SVikas Chaudhary * stepping on top of the other */ 1145f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1146f4f5df23SVikas Chaudhary ssleep(6); 1147f4f5df23SVikas Chaudhary 1148f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1149f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1150f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1151f4f5df23SVikas Chaudhary } 1152f4f5df23SVikas Chaudhary 1153f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1154f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1155f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1156f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1157f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1158afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1159f4f5df23SVikas Chaudhary * resetting the ha. 1160f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1161f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1162f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1163afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1164afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1165afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1166afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1167afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1168afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1169afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1170afaf5a2dSDavid Somayajulu } else { 1171afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1172afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1173afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1174afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1175afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1176afaf5a2dSDavid Somayajulu ha->host_no, 1177afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1178afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1179afaf5a2dSDavid Somayajulu } 1180afaf5a2dSDavid Somayajulu 1181afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1182afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1183afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1184afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1185afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1186afaf5a2dSDavid Somayajulu ha->host_no)); 1187f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1188afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1189afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1190f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1191afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1192afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1193afaf5a2dSDavid Somayajulu } 1194afaf5a2dSDavid Somayajulu } 1195afaf5a2dSDavid Somayajulu } else { 1196afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1197f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1198afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1199afaf5a2dSDavid Somayajulu } 1200afaf5a2dSDavid Somayajulu 1201afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1202afaf5a2dSDavid Somayajulu 1203f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1204f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1205afaf5a2dSDavid Somayajulu 1206f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1207f4f5df23SVikas Chaudhary 1208f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1209f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 1210f4f5df23SVikas Chaudhary status == QLA_ERROR ? "FAILED" : "SUCCEDED")); 1211f4f5df23SVikas Chaudhary 1212afaf5a2dSDavid Somayajulu return status; 1213afaf5a2dSDavid Somayajulu } 1214afaf5a2dSDavid Somayajulu 1215f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1216f4f5df23SVikas Chaudhary { 1217f4f5df23SVikas Chaudhary if (ha->dpc_thread && 1218f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { 1219f4f5df23SVikas Chaudhary set_bit(AF_DPC_SCHEDULED, &ha->flags); 1220f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1221f4f5df23SVikas Chaudhary } 1222f4f5df23SVikas Chaudhary } 1223f4f5df23SVikas Chaudhary 1224afaf5a2dSDavid Somayajulu /** 1225afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1226afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1227afaf5a2dSDavid Somayajulu * 1228afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1229afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1230afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1231afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1232afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1233afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1234afaf5a2dSDavid Somayajulu **/ 1235c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1236afaf5a2dSDavid Somayajulu { 1237c4028958SDavid Howells struct scsi_qla_host *ha = 1238c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1239afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1240477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1241afaf5a2dSDavid Somayajulu 1242f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1243f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1244f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1245afaf5a2dSDavid Somayajulu 1246afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1247afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 12480753b487SVikas Chaudhary goto do_dpc_exit; 1249afaf5a2dSDavid Somayajulu 12502232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 12512232be0dSLalit Chandivade DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", 12522232be0dSLalit Chandivade ha->host_no, __func__, ha->flags)); 12532232be0dSLalit Chandivade goto do_dpc_exit; 12542232be0dSLalit Chandivade } 12552232be0dSLalit Chandivade 1256f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1257f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1258f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1259f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1260f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1261f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1262f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1263f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1264f4f5df23SVikas Chaudhary } 1265f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1266f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1267f4f5df23SVikas Chaudhary } 1268f4f5df23SVikas Chaudhary } 1269f4f5df23SVikas Chaudhary 1270f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1271f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1272afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1273f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1274f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1275f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1276f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1277f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1278f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1279f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1280f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1281f4f5df23SVikas Chaudhary } 1282f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1283f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1284f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1285afaf5a2dSDavid Somayajulu 1286477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1287afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1288afaf5a2dSDavid Somayajulu 1289afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1290afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1291afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1292afaf5a2dSDavid Somayajulu break; 1293afaf5a2dSDavid Somayajulu msleep(1000); 1294afaf5a2dSDavid Somayajulu } 1295afaf5a2dSDavid Somayajulu if (wait_time == 0) 1296afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1297afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1298afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1299f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1300477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1301477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1302f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1303477ffb9dSDavid C Somayajulu } 1304477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1305477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1306f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1307afaf5a2dSDavid Somayajulu } 1308afaf5a2dSDavid Somayajulu } 1309afaf5a2dSDavid Somayajulu 1310f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1311afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1312afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1313afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1314afaf5a2dSDavid Somayajulu 1315afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1316afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1317afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1318afaf5a2dSDavid Somayajulu 1319065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1320065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1321065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1322065aa1b4SVikas Chaudhary /* ---- link down? --- */ 1323065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1324065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1325065aa1b4SVikas Chaudhary if (atomic_read(&ddb_entry->state) == 1326065aa1b4SVikas Chaudhary DDB_STATE_ONLINE) 1327065aa1b4SVikas Chaudhary qla4xxx_mark_device_missing(ha, 1328065aa1b4SVikas Chaudhary ddb_entry); 1329065aa1b4SVikas Chaudhary } 1330065aa1b4SVikas Chaudhary } else { 1331065aa1b4SVikas Chaudhary /* ---- link up? --- * 1332065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1333065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1334065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1335065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1336065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1337065aa1b4SVikas Chaudhary 1338065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1339065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1340065aa1b4SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == 1341065aa1b4SVikas Chaudhary DDB_STATE_MISSING) || 1342065aa1b4SVikas Chaudhary (atomic_read(&ddb_entry->state) == 1343065aa1b4SVikas Chaudhary DDB_STATE_DEAD)) { 1344065aa1b4SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 1345065aa1b4SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 1346065aa1b4SVikas Chaudhary atomic_set(&ddb_entry->state, 1347065aa1b4SVikas Chaudhary DDB_STATE_ONLINE); 1348c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 1349065aa1b4SVikas Chaudhary "scsi%ld: %s: ddb[%d]" 1350f4f5df23SVikas Chaudhary " marked ONLINE\n", 1351065aa1b4SVikas Chaudhary ha->host_no, __func__, 1352f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index); 1353065aa1b4SVikas Chaudhary 1354065aa1b4SVikas Chaudhary iscsi_unblock_session( 1355065aa1b4SVikas Chaudhary ddb_entry->sess); 1356065aa1b4SVikas Chaudhary } else 1357065aa1b4SVikas Chaudhary qla4xxx_relogin_device( 1358065aa1b4SVikas Chaudhary ha, ddb_entry); 1359065aa1b4SVikas Chaudhary } 1360065aa1b4SVikas Chaudhary 1361065aa1b4SVikas Chaudhary } 1362065aa1b4SVikas Chaudhary } 1363065aa1b4SVikas Chaudhary } 1364065aa1b4SVikas Chaudhary 1365afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1366afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1367afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1368afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1369afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1370afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1371afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1372afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1373afaf5a2dSDavid Somayajulu 1374afaf5a2dSDavid Somayajulu /* 1375afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1376afaf5a2dSDavid Somayajulu * in continuing further. 1377afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1378afaf5a2dSDavid Somayajulu * the system. 1379afaf5a2dSDavid Somayajulu */ 1380afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1381afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1382afaf5a2dSDavid Somayajulu "need to reset hba\n", 1383afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1384afaf5a2dSDavid Somayajulu break; 1385afaf5a2dSDavid Somayajulu } 1386afaf5a2dSDavid Somayajulu } 1387afaf5a2dSDavid Somayajulu } 13880753b487SVikas Chaudhary 13890753b487SVikas Chaudhary do_dpc_exit: 1390f4f5df23SVikas Chaudhary clear_bit(AF_DPC_SCHEDULED, &ha->flags); 1391afaf5a2dSDavid Somayajulu } 1392afaf5a2dSDavid Somayajulu 1393afaf5a2dSDavid Somayajulu /** 1394afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1395afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1396afaf5a2dSDavid Somayajulu **/ 1397afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1398afaf5a2dSDavid Somayajulu { 1399afaf5a2dSDavid Somayajulu 1400afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1401afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1402f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1403afaf5a2dSDavid Somayajulu } 1404afaf5a2dSDavid Somayajulu 1405afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1406afaf5a2dSDavid Somayajulu if (ha->timer_active) 1407afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1408afaf5a2dSDavid Somayajulu 1409f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1410f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1411f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1412f4f5df23SVikas Chaudhary 1413f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1414f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1415f4f5df23SVikas Chaudhary 1416f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1417f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1418f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1419f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1420f4f5df23SVikas Chaudhary } 1421f4f5df23SVikas Chaudhary 1422afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1423afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1424f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1425afaf5a2dSDavid Somayajulu 1426bee4fe8eSDavid C Somayajulu /* free extra memory */ 1427bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1428f4f5df23SVikas Chaudhary } 1429bee4fe8eSDavid C Somayajulu 1430f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1431f4f5df23SVikas Chaudhary { 1432f4f5df23SVikas Chaudhary int status = 0; 1433f4f5df23SVikas Chaudhary uint8_t revision_id; 1434f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1435f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1436afaf5a2dSDavid Somayajulu 1437f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1438f4f5df23SVikas Chaudhary if (status) { 1439f4f5df23SVikas Chaudhary printk(KERN_WARNING 1440f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1441f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1442f4f5df23SVikas Chaudhary goto iospace_error_exit; 1443f4f5df23SVikas Chaudhary } 1444f4f5df23SVikas Chaudhary 1445f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1446f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1447f4f5df23SVikas Chaudhary __func__, revision_id)); 1448f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1449f4f5df23SVikas Chaudhary 1450f4f5df23SVikas Chaudhary /* remap phys address */ 1451f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1452f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1453f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1454f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1455f4f5df23SVikas Chaudhary 1456f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1457f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1458f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1459f4f5df23SVikas Chaudhary printk(KERN_ERR 1460f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1461f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1462f4f5df23SVikas Chaudhary goto iospace_error_exit; 1463f4f5df23SVikas Chaudhary } 1464f4f5df23SVikas Chaudhary 1465f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1466f4f5df23SVikas Chaudhary 1467f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1468f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1469f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1470f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1471f4f5df23SVikas Chaudhary 1472f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1473f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1474f4f5df23SVikas Chaudhary 14752657c800SShyam Sundar ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : 14762657c800SShyam Sundar QLA82XX_CAM_RAM_DB2); 1477f4f5df23SVikas Chaudhary 14782657c800SShyam Sundar return 0; 1479f4f5df23SVikas Chaudhary iospace_error_exit: 1480f4f5df23SVikas Chaudhary return -ENOMEM; 1481afaf5a2dSDavid Somayajulu } 1482afaf5a2dSDavid Somayajulu 1483afaf5a2dSDavid Somayajulu /*** 1484afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1485afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1486afaf5a2dSDavid Somayajulu * 1487afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1488afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1489afaf5a2dSDavid Somayajulu **/ 1490f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1491afaf5a2dSDavid Somayajulu { 1492afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1493afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1494afaf5a2dSDavid Somayajulu 1495afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1496afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1497afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1498afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1499afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1500c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1501afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1502afaf5a2dSDavid Somayajulu pio = 0; 1503afaf5a2dSDavid Somayajulu } 1504afaf5a2dSDavid Somayajulu } else { 1505c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1506afaf5a2dSDavid Somayajulu pio = 0; 1507afaf5a2dSDavid Somayajulu } 1508afaf5a2dSDavid Somayajulu 1509afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1510afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1511afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1512afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1513afaf5a2dSDavid Somayajulu 1514afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1515c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1516afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1517afaf5a2dSDavid Somayajulu 1518afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1519afaf5a2dSDavid Somayajulu } 1520c2660df3SVikas Chaudhary 1521afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1522c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1523afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1524afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1525afaf5a2dSDavid Somayajulu } 1526afaf5a2dSDavid Somayajulu 1527afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1528c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1529afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1530afaf5a2dSDavid Somayajulu 1531afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1532afaf5a2dSDavid Somayajulu } 1533afaf5a2dSDavid Somayajulu 1534afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1535afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1536afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1537afaf5a2dSDavid Somayajulu if (!ha->reg) { 1538c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1539afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1540afaf5a2dSDavid Somayajulu 1541afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1542afaf5a2dSDavid Somayajulu } 1543afaf5a2dSDavid Somayajulu 1544afaf5a2dSDavid Somayajulu return 0; 1545afaf5a2dSDavid Somayajulu 1546afaf5a2dSDavid Somayajulu iospace_error_exit: 1547afaf5a2dSDavid Somayajulu return -ENOMEM; 1548afaf5a2dSDavid Somayajulu } 1549afaf5a2dSDavid Somayajulu 1550f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1551f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1552f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1553f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1554f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1555f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1556f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1557f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1558f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1559f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1560f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1561f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1562f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1563f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1564f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1565f4f5df23SVikas Chaudhary }; 1566f4f5df23SVikas Chaudhary 1567f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1568f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1569f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1570f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1571f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1572f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1573f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1574f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1575f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1576f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1577f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1578f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1579f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1580f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1581f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1582f4f5df23SVikas Chaudhary }; 1583f4f5df23SVikas Chaudhary 1584f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1585f4f5df23SVikas Chaudhary { 1586f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1587f4f5df23SVikas Chaudhary } 1588f4f5df23SVikas Chaudhary 1589f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1590f4f5df23SVikas Chaudhary { 1591f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1592f4f5df23SVikas Chaudhary } 1593f4f5df23SVikas Chaudhary 1594f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1595f4f5df23SVikas Chaudhary { 1596f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1597f4f5df23SVikas Chaudhary } 1598f4f5df23SVikas Chaudhary 1599f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1600f4f5df23SVikas Chaudhary { 1601f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1602f4f5df23SVikas Chaudhary } 1603f4f5df23SVikas Chaudhary 1604afaf5a2dSDavid Somayajulu /** 1605afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1606afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1607afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1608afaf5a2dSDavid Somayajulu * 1609afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1610afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1611afaf5a2dSDavid Somayajulu * the driver. 1612afaf5a2dSDavid Somayajulu **/ 1613afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1614afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1615afaf5a2dSDavid Somayajulu { 1616afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1617afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1618afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1619afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1620afaf5a2dSDavid Somayajulu char buf[34]; 1621f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1622f9880e76SPrasanna Mumbai uint32_t dev_state; 1623afaf5a2dSDavid Somayajulu 1624afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1625afaf5a2dSDavid Somayajulu return -1; 1626afaf5a2dSDavid Somayajulu 1627afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1628afaf5a2dSDavid Somayajulu if (host == NULL) { 1629afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1630afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1631afaf5a2dSDavid Somayajulu goto probe_disable_device; 1632afaf5a2dSDavid Somayajulu } 1633afaf5a2dSDavid Somayajulu 1634afaf5a2dSDavid Somayajulu /* Clear our data area */ 1635afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1636afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1637afaf5a2dSDavid Somayajulu 1638afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1639afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1640afaf5a2dSDavid Somayajulu ha->host = host; 1641afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1642afaf5a2dSDavid Somayajulu 16432232be0dSLalit Chandivade pci_enable_pcie_error_reporting(pdev); 16442232be0dSLalit Chandivade 1645f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1646f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1647f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1648f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1649f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1650f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1651f4f5df23SVikas Chaudhary ha->curr_window = 255; 1652f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1653f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1654f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1655f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1656f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1657f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1658f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1659f4f5df23SVikas Chaudhary } else { 1660f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1661f4f5df23SVikas Chaudhary } 1662f4f5df23SVikas Chaudhary 16632232be0dSLalit Chandivade /* Set EEH reset type to fundamental if required by hba */ 16642232be0dSLalit Chandivade if (is_qla8022(ha)) 16652232be0dSLalit Chandivade pdev->needs_freset = 1; 16662232be0dSLalit Chandivade 1667afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1668f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1669afaf5a2dSDavid Somayajulu if (ret) 1670f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1671afaf5a2dSDavid Somayajulu 1672c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1673afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1674afaf5a2dSDavid Somayajulu 1675afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1676afaf5a2dSDavid Somayajulu 1677afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1678afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1679afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1680afaf5a2dSDavid Somayajulu 1681afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1682f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1683afaf5a2dSDavid Somayajulu 1684afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1685afaf5a2dSDavid Somayajulu 1686afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1687afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1688c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1689afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1690afaf5a2dSDavid Somayajulu 1691afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1692afaf5a2dSDavid Somayajulu goto probe_failed; 1693afaf5a2dSDavid Somayajulu } 1694afaf5a2dSDavid Somayajulu 1695f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1696f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1697f4f5df23SVikas Chaudhary 1698afaf5a2dSDavid Somayajulu /* 1699afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1700afaf5a2dSDavid Somayajulu * firmware 1701afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1702afaf5a2dSDavid Somayajulu */ 1703afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1704f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1705f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1706f9880e76SPrasanna Mumbai 1707f9880e76SPrasanna Mumbai if (is_qla8022(ha)) { 1708f9880e76SPrasanna Mumbai qla4_8xxx_idc_lock(ha); 1709f9880e76SPrasanna Mumbai dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 1710f9880e76SPrasanna Mumbai qla4_8xxx_idc_unlock(ha); 1711f9880e76SPrasanna Mumbai if (dev_state == QLA82XX_DEV_FAILED) { 1712f9880e76SPrasanna Mumbai ql4_printk(KERN_WARNING, ha, "%s: don't retry " 1713f9880e76SPrasanna Mumbai "initialize adapter. H/W is in failed state\n", 1714f9880e76SPrasanna Mumbai __func__); 1715f9880e76SPrasanna Mumbai break; 1716f9880e76SPrasanna Mumbai } 1717f9880e76SPrasanna Mumbai } 1718afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1719afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1720f4f5df23SVikas Chaudhary 1721f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 1722f4f5df23SVikas Chaudhary continue; 1723f4f5df23SVikas Chaudhary 1724afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1725afaf5a2dSDavid Somayajulu } 1726f4f5df23SVikas Chaudhary 1727f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 1728c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 1729afaf5a2dSDavid Somayajulu 1730fe998527SLalit Chandivade if (is_qla8022(ha) && ql4xdontresethba) { 1731fe998527SLalit Chandivade /* Put the device in failed state. */ 1732fe998527SLalit Chandivade DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); 1733fe998527SLalit Chandivade qla4_8xxx_idc_lock(ha); 1734fe998527SLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1735fe998527SLalit Chandivade QLA82XX_DEV_FAILED); 1736fe998527SLalit Chandivade qla4_8xxx_idc_unlock(ha); 1737fe998527SLalit Chandivade } 1738afaf5a2dSDavid Somayajulu ret = -ENODEV; 1739afaf5a2dSDavid Somayajulu goto probe_failed; 1740afaf5a2dSDavid Somayajulu } 1741afaf5a2dSDavid Somayajulu 1742afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1743afaf5a2dSDavid Somayajulu host->max_channel = 0; 1744afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1745afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1746afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1747afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1748afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1749afaf5a2dSDavid Somayajulu 1750afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1751afaf5a2dSDavid Somayajulu if (ret) { 1752c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1753c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 1754afaf5a2dSDavid Somayajulu goto probe_failed; 1755afaf5a2dSDavid Somayajulu } 1756afaf5a2dSDavid Somayajulu 1757afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1758afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1759afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1760afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1761afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1762afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1763c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 1764afaf5a2dSDavid Somayajulu ret = -ENODEV; 1765afaf5a2dSDavid Somayajulu goto probe_failed; 1766afaf5a2dSDavid Somayajulu } 1767c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1768afaf5a2dSDavid Somayajulu 1769f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 1770f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 1771f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 1772f4f5df23SVikas Chaudhary * mbx_intr_enable. 1773f4f5df23SVikas Chaudhary */ 1774f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1775f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 1776afaf5a2dSDavid Somayajulu if (ret) { 1777f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 1778f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 1779afaf5a2dSDavid Somayajulu goto probe_failed; 1780afaf5a2dSDavid Somayajulu } 1781f4f5df23SVikas Chaudhary } 1782afaf5a2dSDavid Somayajulu 17832232be0dSLalit Chandivade pci_save_state(ha->pdev); 1784f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1785afaf5a2dSDavid Somayajulu 1786afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1787afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1788afaf5a2dSDavid Somayajulu 1789afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1790afaf5a2dSDavid Somayajulu 1791afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1792afaf5a2dSDavid Somayajulu 1793afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1794afaf5a2dSDavid Somayajulu if (ret) 1795afaf5a2dSDavid Somayajulu goto probe_failed; 1796afaf5a2dSDavid Somayajulu 1797afaf5a2dSDavid Somayajulu printk(KERN_INFO 1798afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1799afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1800afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1801afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1802afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1803921601b7SMike Christie scsi_scan_host(host); 1804afaf5a2dSDavid Somayajulu return 0; 1805afaf5a2dSDavid Somayajulu 1806afaf5a2dSDavid Somayajulu probe_failed: 1807afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1808f4f5df23SVikas Chaudhary 1809f4f5df23SVikas Chaudhary probe_failed_ioconfig: 18102232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1811afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1812afaf5a2dSDavid Somayajulu 1813afaf5a2dSDavid Somayajulu probe_disable_device: 1814afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1815afaf5a2dSDavid Somayajulu 1816afaf5a2dSDavid Somayajulu return ret; 1817afaf5a2dSDavid Somayajulu } 1818afaf5a2dSDavid Somayajulu 1819afaf5a2dSDavid Somayajulu /** 18207eece5a0SKaren Higgins * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize 18217eece5a0SKaren Higgins * @ha: pointer to adapter structure 18227eece5a0SKaren Higgins * 18237eece5a0SKaren Higgins * Mark the other ISP-4xxx port to indicate that the driver is being removed, 18247eece5a0SKaren Higgins * so that the other port will not re-initialize while in the process of 18257eece5a0SKaren Higgins * removing the ha due to driver unload or hba hotplug. 18267eece5a0SKaren Higgins **/ 18277eece5a0SKaren Higgins static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) 18287eece5a0SKaren Higgins { 18297eece5a0SKaren Higgins struct scsi_qla_host *other_ha = NULL; 18307eece5a0SKaren Higgins struct pci_dev *other_pdev = NULL; 18317eece5a0SKaren Higgins int fn = ISP4XXX_PCI_FN_2; 18327eece5a0SKaren Higgins 18337eece5a0SKaren Higgins /*iscsi function numbers for ISP4xxx is 1 and 3*/ 18347eece5a0SKaren Higgins if (PCI_FUNC(ha->pdev->devfn) & BIT_1) 18357eece5a0SKaren Higgins fn = ISP4XXX_PCI_FN_1; 18367eece5a0SKaren Higgins 18377eece5a0SKaren Higgins other_pdev = 18387eece5a0SKaren Higgins pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 18397eece5a0SKaren Higgins ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 18407eece5a0SKaren Higgins fn)); 18417eece5a0SKaren Higgins 18427eece5a0SKaren Higgins /* Get other_ha if other_pdev is valid and state is enable*/ 18437eece5a0SKaren Higgins if (other_pdev) { 18447eece5a0SKaren Higgins if (atomic_read(&other_pdev->enable_cnt)) { 18457eece5a0SKaren Higgins other_ha = pci_get_drvdata(other_pdev); 18467eece5a0SKaren Higgins if (other_ha) { 18477eece5a0SKaren Higgins set_bit(AF_HA_REMOVAL, &other_ha->flags); 18487eece5a0SKaren Higgins DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " 18497eece5a0SKaren Higgins "Prevent %s reinit\n", __func__, 18507eece5a0SKaren Higgins dev_name(&other_ha->pdev->dev))); 18517eece5a0SKaren Higgins } 18527eece5a0SKaren Higgins } 18537eece5a0SKaren Higgins pci_dev_put(other_pdev); 18547eece5a0SKaren Higgins } 18557eece5a0SKaren Higgins } 18567eece5a0SKaren Higgins 18577eece5a0SKaren Higgins /** 1858afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1859afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1860afaf5a2dSDavid Somayajulu **/ 1861afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1862afaf5a2dSDavid Somayajulu { 1863afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1864afaf5a2dSDavid Somayajulu 1865afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1866afaf5a2dSDavid Somayajulu 18677eece5a0SKaren Higgins if (!is_qla8022(ha)) 18687eece5a0SKaren Higgins qla4xxx_prevent_other_port_reinit(ha); 1869bee4fe8eSDavid C Somayajulu 1870afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1871afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1872afaf5a2dSDavid Somayajulu 1873afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1874afaf5a2dSDavid Somayajulu 1875afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1876afaf5a2dSDavid Somayajulu 1877afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1878afaf5a2dSDavid Somayajulu 18792232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1880f4f5df23SVikas Chaudhary pci_disable_device(pdev); 1881afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1882afaf5a2dSDavid Somayajulu } 1883afaf5a2dSDavid Somayajulu 1884afaf5a2dSDavid Somayajulu /** 1885afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1886afaf5a2dSDavid Somayajulu * @ha: HA context 1887afaf5a2dSDavid Somayajulu * 1888afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1889afaf5a2dSDavid Somayajulu * supported addressing method. 1890afaf5a2dSDavid Somayajulu */ 189147975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1892afaf5a2dSDavid Somayajulu { 1893afaf5a2dSDavid Somayajulu int retval; 1894afaf5a2dSDavid Somayajulu 1895afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 18966a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 18976a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1898afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1899afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1900afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1901afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1902284901a9SYang Hongyang DMA_BIT_MASK(32)); 1903afaf5a2dSDavid Somayajulu } 1904afaf5a2dSDavid Somayajulu } else 1905284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1906afaf5a2dSDavid Somayajulu } 1907afaf5a2dSDavid Somayajulu 1908afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1909afaf5a2dSDavid Somayajulu { 1910afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1911afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 19128bb4033dSVikas Chaudhary int queue_depth = QL4_DEF_QDEPTH; 1913afaf5a2dSDavid Somayajulu 1914afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1915afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 19168bb4033dSVikas Chaudhary 19178bb4033dSVikas Chaudhary if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU) 19188bb4033dSVikas Chaudhary queue_depth = ql4xmaxqdepth; 19198bb4033dSVikas Chaudhary 19208bb4033dSVikas Chaudhary scsi_activate_tcq(sdev, queue_depth); 1921afaf5a2dSDavid Somayajulu return 0; 1922afaf5a2dSDavid Somayajulu } 1923afaf5a2dSDavid Somayajulu 1924afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1925afaf5a2dSDavid Somayajulu { 1926afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1927afaf5a2dSDavid Somayajulu return 0; 1928afaf5a2dSDavid Somayajulu } 1929afaf5a2dSDavid Somayajulu 1930afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1931afaf5a2dSDavid Somayajulu { 1932afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1933afaf5a2dSDavid Somayajulu } 1934afaf5a2dSDavid Somayajulu 1935afaf5a2dSDavid Somayajulu /** 1936afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1937afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1938fd589a8fSAnand Gadiyar * @index: index into the active_array 1939afaf5a2dSDavid Somayajulu * 1940afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1941afaf5a2dSDavid Somayajulu **/ 1942f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 1943f4f5df23SVikas Chaudhary uint32_t index) 1944afaf5a2dSDavid Somayajulu { 1945afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 19465369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 1947afaf5a2dSDavid Somayajulu 19485369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 19495369887aSVikas Chaudhary if (!cmd) 1950afaf5a2dSDavid Somayajulu return srb; 1951afaf5a2dSDavid Somayajulu 19525369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 19535369887aSVikas Chaudhary if (!srb) 1954afaf5a2dSDavid Somayajulu return srb; 1955afaf5a2dSDavid Somayajulu 1956afaf5a2dSDavid Somayajulu /* update counters */ 1957afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1958afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1959afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1960afaf5a2dSDavid Somayajulu if (srb->cmd) 19615369887aSVikas Chaudhary srb->cmd->host_scribble = 19625369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 1963afaf5a2dSDavid Somayajulu } 1964afaf5a2dSDavid Somayajulu return srb; 1965afaf5a2dSDavid Somayajulu } 1966afaf5a2dSDavid Somayajulu 1967afaf5a2dSDavid Somayajulu /** 1968afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 196909a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 1970afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1971afaf5a2dSDavid Somayajulu * 1972afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1973afaf5a2dSDavid Somayajulu * for some max time. 1974afaf5a2dSDavid Somayajulu **/ 1975afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1976afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1977afaf5a2dSDavid Somayajulu { 1978afaf5a2dSDavid Somayajulu int done = 0; 1979afaf5a2dSDavid Somayajulu struct srb *rp; 1980afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 19812232be0dSLalit Chandivade int ret = SUCCESS; 19822232be0dSLalit Chandivade 19832232be0dSLalit Chandivade /* Dont wait on command if PCI error is being handled 19842232be0dSLalit Chandivade * by PCI AER driver 19852232be0dSLalit Chandivade */ 19862232be0dSLalit Chandivade if (unlikely(pci_channel_offline(ha->pdev)) || 19872232be0dSLalit Chandivade (test_bit(AF_EEH_BUSY, &ha->flags))) { 19882232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", 19892232be0dSLalit Chandivade ha->host_no, __func__); 19902232be0dSLalit Chandivade return ret; 19912232be0dSLalit Chandivade } 1992afaf5a2dSDavid Somayajulu 1993afaf5a2dSDavid Somayajulu do { 1994afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 19955369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 1996afaf5a2dSDavid Somayajulu if (rp == NULL) { 1997afaf5a2dSDavid Somayajulu done++; 1998afaf5a2dSDavid Somayajulu break; 1999afaf5a2dSDavid Somayajulu } 2000afaf5a2dSDavid Somayajulu 2001afaf5a2dSDavid Somayajulu msleep(2000); 2002afaf5a2dSDavid Somayajulu } while (max_wait_time--); 2003afaf5a2dSDavid Somayajulu 2004afaf5a2dSDavid Somayajulu return done; 2005afaf5a2dSDavid Somayajulu } 2006afaf5a2dSDavid Somayajulu 2007afaf5a2dSDavid Somayajulu /** 2008afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 2009afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 2010afaf5a2dSDavid Somayajulu **/ 2011afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 2012afaf5a2dSDavid Somayajulu { 2013afaf5a2dSDavid Somayajulu unsigned long wait_online; 2014afaf5a2dSDavid Somayajulu 2015f581a3f7SVikas Chaudhary wait_online = jiffies + (HBA_ONLINE_TOV * HZ); 2016afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 2017afaf5a2dSDavid Somayajulu 2018afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 2019afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 2020afaf5a2dSDavid Somayajulu 2021afaf5a2dSDavid Somayajulu msleep(2000); 2022afaf5a2dSDavid Somayajulu } 2023afaf5a2dSDavid Somayajulu 2024afaf5a2dSDavid Somayajulu return QLA_ERROR; 2025afaf5a2dSDavid Somayajulu } 2026afaf5a2dSDavid Somayajulu 2027afaf5a2dSDavid Somayajulu /** 2028ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 2029fd589a8fSAnand Gadiyar * @ha: pointer to HBA 2030afaf5a2dSDavid Somayajulu * @t: target id 2031afaf5a2dSDavid Somayajulu * @l: lun id 2032afaf5a2dSDavid Somayajulu * 2033afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 2034afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 2035afaf5a2dSDavid Somayajulu **/ 2036ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 2037ce545039SMike Christie struct scsi_target *stgt, 2038ce545039SMike Christie struct scsi_device *sdev) 2039afaf5a2dSDavid Somayajulu { 2040afaf5a2dSDavid Somayajulu int cnt; 2041afaf5a2dSDavid Somayajulu int status = 0; 2042afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 2043afaf5a2dSDavid Somayajulu 2044afaf5a2dSDavid Somayajulu /* 2045ce545039SMike Christie * Waiting for all commands for the designated target or dev 2046ce545039SMike Christie * in the active array 2047afaf5a2dSDavid Somayajulu */ 2048afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 2049afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 2050ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 2051ce545039SMike Christie (!sdev || sdev == cmd->device)) { 2052afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 2053afaf5a2dSDavid Somayajulu status++; 2054afaf5a2dSDavid Somayajulu break; 2055afaf5a2dSDavid Somayajulu } 2056afaf5a2dSDavid Somayajulu } 2057afaf5a2dSDavid Somayajulu } 2058afaf5a2dSDavid Somayajulu return status; 2059afaf5a2dSDavid Somayajulu } 2060afaf5a2dSDavid Somayajulu 2061afaf5a2dSDavid Somayajulu /** 206209a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 206309a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 206409a0f719SVikas Chaudhary * 206509a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 206609a0f719SVikas Chaudhary * command. 206709a0f719SVikas Chaudhary **/ 206809a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 206909a0f719SVikas Chaudhary { 207009a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 207109a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 207209a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 207309a0f719SVikas Chaudhary unsigned long serial = cmd->serial_number; 207492b3e5bbSMike Christie unsigned long flags; 207509a0f719SVikas Chaudhary struct srb *srb = NULL; 207609a0f719SVikas Chaudhary int ret = SUCCESS; 207709a0f719SVikas Chaudhary int wait = 0; 207809a0f719SVikas Chaudhary 2079c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 208009a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", 208109a0f719SVikas Chaudhary ha->host_no, id, lun, cmd, serial); 208209a0f719SVikas Chaudhary 208392b3e5bbSMike Christie spin_lock_irqsave(&ha->hardware_lock, flags); 208409a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 208592b3e5bbSMike Christie if (!srb) { 208692b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 208709a0f719SVikas Chaudhary return SUCCESS; 208892b3e5bbSMike Christie } 208909a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 209092b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 209109a0f719SVikas Chaudhary 209209a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 209309a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 209409a0f719SVikas Chaudhary ha->host_no, id, lun)); 209509a0f719SVikas Chaudhary ret = FAILED; 209609a0f719SVikas Chaudhary } else { 209709a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 209809a0f719SVikas Chaudhary ha->host_no, id, lun)); 209909a0f719SVikas Chaudhary wait = 1; 210009a0f719SVikas Chaudhary } 210109a0f719SVikas Chaudhary 210209a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 210309a0f719SVikas Chaudhary 210409a0f719SVikas Chaudhary /* Wait for command to complete */ 210509a0f719SVikas Chaudhary if (wait) { 210609a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 210709a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 210809a0f719SVikas Chaudhary ha->host_no, id, lun)); 210909a0f719SVikas Chaudhary ret = FAILED; 211009a0f719SVikas Chaudhary } 211109a0f719SVikas Chaudhary } 211209a0f719SVikas Chaudhary 2113c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 211409a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 211509a0f719SVikas Chaudhary ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); 211609a0f719SVikas Chaudhary 211709a0f719SVikas Chaudhary return ret; 211809a0f719SVikas Chaudhary } 211909a0f719SVikas Chaudhary 212009a0f719SVikas Chaudhary /** 2121afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2122afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2123afaf5a2dSDavid Somayajulu * 2124afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2125afaf5a2dSDavid Somayajulu * specified target. 2126afaf5a2dSDavid Somayajulu **/ 2127afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2128afaf5a2dSDavid Somayajulu { 2129afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2130afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2131afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2132afaf5a2dSDavid Somayajulu 2133612f7348SKaren Higgins if (!ddb_entry) 2134afaf5a2dSDavid Somayajulu return ret; 2135afaf5a2dSDavid Somayajulu 2136c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2137c01be6dcSMike Christie if (ret) 2138c01be6dcSMike Christie return ret; 2139c01be6dcSMike Christie ret = FAILED; 2140c01be6dcSMike Christie 2141c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2142afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2143afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2144afaf5a2dSDavid Somayajulu 2145afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2146afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2147afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2148242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2149afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2150afaf5a2dSDavid Somayajulu 2151afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2152afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2153afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2154c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2155afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2156afaf5a2dSDavid Somayajulu } 2157afaf5a2dSDavid Somayajulu 2158ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2159ce545039SMike Christie cmd->device)) { 2160c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2161afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2162afaf5a2dSDavid Somayajulu "commands.\n"); 2163afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2164afaf5a2dSDavid Somayajulu } 2165afaf5a2dSDavid Somayajulu 21669d562913SDavid C Somayajulu /* Send marker. */ 21679d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21689d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 21699d562913SDavid C Somayajulu goto eh_dev_reset_done; 21709d562913SDavid C Somayajulu 2171c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2172afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2173afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2174afaf5a2dSDavid Somayajulu cmd->device->lun); 2175afaf5a2dSDavid Somayajulu 2176afaf5a2dSDavid Somayajulu ret = SUCCESS; 2177afaf5a2dSDavid Somayajulu 2178afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2179afaf5a2dSDavid Somayajulu 2180afaf5a2dSDavid Somayajulu return ret; 2181afaf5a2dSDavid Somayajulu } 2182afaf5a2dSDavid Somayajulu 2183afaf5a2dSDavid Somayajulu /** 2184ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2185ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2186ce545039SMike Christie * 2187ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2188ce545039SMike Christie **/ 2189ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2190ce545039SMike Christie { 2191ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2192ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2193c01be6dcSMike Christie int stat, ret; 2194ce545039SMike Christie 2195ce545039SMike Christie if (!ddb_entry) 2196ce545039SMike Christie return FAILED; 2197ce545039SMike Christie 2198c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2199c01be6dcSMike Christie if (ret) 2200c01be6dcSMike Christie return ret; 2201c01be6dcSMike Christie 2202ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2203ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2204ce545039SMike Christie 2205ce545039SMike Christie DEBUG2(printk(KERN_INFO 2206ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2207ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2208242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2209ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2210ce545039SMike Christie 2211ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2212ce545039SMike Christie if (stat != QLA_SUCCESS) { 2213ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2214ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2215ce545039SMike Christie return FAILED; 2216ce545039SMike Christie } 2217ce545039SMike Christie 2218ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2219ce545039SMike Christie NULL)) { 2220ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2221ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2222ce545039SMike Christie "waiting for commands.\n"); 2223ce545039SMike Christie return FAILED; 2224ce545039SMike Christie } 2225ce545039SMike Christie 22269d562913SDavid C Somayajulu /* Send marker. */ 22279d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 22289d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 22299d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 22309d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 22319d562913SDavid C Somayajulu "marker iocb failed.\n"); 22329d562913SDavid C Somayajulu return FAILED; 22339d562913SDavid C Somayajulu } 22349d562913SDavid C Somayajulu 2235ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2236ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2237ce545039SMike Christie return SUCCESS; 2238ce545039SMike Christie } 2239ce545039SMike Christie 2240ce545039SMike Christie /** 2241afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2242afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2243afaf5a2dSDavid Somayajulu * 2244afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2245afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2246afaf5a2dSDavid Somayajulu **/ 2247afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2248afaf5a2dSDavid Somayajulu { 2249afaf5a2dSDavid Somayajulu int return_status = FAILED; 2250afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2251afaf5a2dSDavid Somayajulu 2252afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2253afaf5a2dSDavid Somayajulu 2254f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2255f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2256f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2257f4f5df23SVikas Chaudhary return FAILED; 2258f4f5df23SVikas Chaudhary } 2259f4f5df23SVikas Chaudhary 2260c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2261dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2262afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2263afaf5a2dSDavid Somayajulu 2264afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2265afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2266afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2267afaf5a2dSDavid Somayajulu __func__)); 2268afaf5a2dSDavid Somayajulu 2269afaf5a2dSDavid Somayajulu return FAILED; 2270afaf5a2dSDavid Somayajulu } 2271afaf5a2dSDavid Somayajulu 2272f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2273f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2274f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2275f4f5df23SVikas Chaudhary else 2276f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2277f4f5df23SVikas Chaudhary } 227850a29aecSMike Christie 2279f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2280afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2281afaf5a2dSDavid Somayajulu 2282c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 2283afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 2284afaf5a2dSDavid Somayajulu 2285afaf5a2dSDavid Somayajulu return return_status; 2286afaf5a2dSDavid Somayajulu } 2287afaf5a2dSDavid Somayajulu 22882232be0dSLalit Chandivade /* PCI AER driver recovers from all correctable errors w/o 22892232be0dSLalit Chandivade * driver intervention. For uncorrectable errors PCI AER 22902232be0dSLalit Chandivade * driver calls the following device driver's callbacks 22912232be0dSLalit Chandivade * 22922232be0dSLalit Chandivade * - Fatal Errors - link_reset 22932232be0dSLalit Chandivade * - Non-Fatal Errors - driver's pci_error_detected() which 22942232be0dSLalit Chandivade * returns CAN_RECOVER, NEED_RESET or DISCONNECT. 22952232be0dSLalit Chandivade * 22962232be0dSLalit Chandivade * PCI AER driver calls 22972232be0dSLalit Chandivade * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled 22982232be0dSLalit Chandivade * returns RECOVERED or NEED_RESET if fw_hung 22992232be0dSLalit Chandivade * NEED_RESET - driver's slot_reset() 23002232be0dSLalit Chandivade * DISCONNECT - device is dead & cannot recover 23012232be0dSLalit Chandivade * RECOVERED - driver's pci_resume() 23022232be0dSLalit Chandivade */ 23032232be0dSLalit Chandivade static pci_ers_result_t 23042232be0dSLalit Chandivade qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 23052232be0dSLalit Chandivade { 23062232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 23072232be0dSLalit Chandivade 23082232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", 23092232be0dSLalit Chandivade ha->host_no, __func__, state); 23102232be0dSLalit Chandivade 23112232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23122232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23132232be0dSLalit Chandivade 23142232be0dSLalit Chandivade switch (state) { 23152232be0dSLalit Chandivade case pci_channel_io_normal: 23162232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 23172232be0dSLalit Chandivade return PCI_ERS_RESULT_CAN_RECOVER; 23182232be0dSLalit Chandivade case pci_channel_io_frozen: 23192232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23202232be0dSLalit Chandivade qla4xxx_mailbox_premature_completion(ha); 23212232be0dSLalit Chandivade qla4xxx_free_irqs(ha); 23222232be0dSLalit Chandivade pci_disable_device(pdev); 23237b3595dfSVikas Chaudhary /* Return back all IOs */ 23247b3595dfSVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 23252232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23262232be0dSLalit Chandivade case pci_channel_io_perm_failure: 23272232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23282232be0dSLalit Chandivade set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); 23292232be0dSLalit Chandivade qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 23302232be0dSLalit Chandivade return PCI_ERS_RESULT_DISCONNECT; 23312232be0dSLalit Chandivade } 23322232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23332232be0dSLalit Chandivade } 23342232be0dSLalit Chandivade 23352232be0dSLalit Chandivade /** 23362232be0dSLalit Chandivade * qla4xxx_pci_mmio_enabled() gets called if 23372232be0dSLalit Chandivade * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER 23382232be0dSLalit Chandivade * and read/write to the device still works. 23392232be0dSLalit Chandivade **/ 23402232be0dSLalit Chandivade static pci_ers_result_t 23412232be0dSLalit Chandivade qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) 23422232be0dSLalit Chandivade { 23432232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 23442232be0dSLalit Chandivade 23452232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23462232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23472232be0dSLalit Chandivade 23482232be0dSLalit Chandivade return PCI_ERS_RESULT_RECOVERED; 23492232be0dSLalit Chandivade } 23502232be0dSLalit Chandivade 23517b3595dfSVikas Chaudhary static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) 23522232be0dSLalit Chandivade { 23532232be0dSLalit Chandivade uint32_t rval = QLA_ERROR; 23547b3595dfSVikas Chaudhary uint32_t ret = 0; 23552232be0dSLalit Chandivade int fn; 23562232be0dSLalit Chandivade struct pci_dev *other_pdev = NULL; 23572232be0dSLalit Chandivade 23582232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); 23592232be0dSLalit Chandivade 23602232be0dSLalit Chandivade set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 23612232be0dSLalit Chandivade 23622232be0dSLalit Chandivade if (test_bit(AF_ONLINE, &ha->flags)) { 23632232be0dSLalit Chandivade clear_bit(AF_ONLINE, &ha->flags); 23642232be0dSLalit Chandivade qla4xxx_mark_all_devices_missing(ha); 23652232be0dSLalit Chandivade qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 23662232be0dSLalit Chandivade } 23672232be0dSLalit Chandivade 23682232be0dSLalit Chandivade fn = PCI_FUNC(ha->pdev->devfn); 23692232be0dSLalit Chandivade while (fn > 0) { 23702232be0dSLalit Chandivade fn--; 23712232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " 23722232be0dSLalit Chandivade "func %x\n", ha->host_no, __func__, fn); 23732232be0dSLalit Chandivade /* Get the pci device given the domain, bus, 23742232be0dSLalit Chandivade * slot/function number */ 23752232be0dSLalit Chandivade other_pdev = 23762232be0dSLalit Chandivade pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 23772232be0dSLalit Chandivade ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 23782232be0dSLalit Chandivade fn)); 23792232be0dSLalit Chandivade 23802232be0dSLalit Chandivade if (!other_pdev) 23812232be0dSLalit Chandivade continue; 23822232be0dSLalit Chandivade 23832232be0dSLalit Chandivade if (atomic_read(&other_pdev->enable_cnt)) { 23842232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " 23852232be0dSLalit Chandivade "func in enabled state%x\n", ha->host_no, 23862232be0dSLalit Chandivade __func__, fn); 23872232be0dSLalit Chandivade pci_dev_put(other_pdev); 23882232be0dSLalit Chandivade break; 23892232be0dSLalit Chandivade } 23902232be0dSLalit Chandivade pci_dev_put(other_pdev); 23912232be0dSLalit Chandivade } 23922232be0dSLalit Chandivade 23932232be0dSLalit Chandivade /* The first function on the card, the reset owner will 23942232be0dSLalit Chandivade * start & initialize the firmware. The other functions 23952232be0dSLalit Chandivade * on the card will reset the firmware context 23962232be0dSLalit Chandivade */ 23972232be0dSLalit Chandivade if (!fn) { 23982232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " 23992232be0dSLalit Chandivade "0x%x is the owner\n", ha->host_no, __func__, 24002232be0dSLalit Chandivade ha->pdev->devfn); 24012232be0dSLalit Chandivade 24022232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24032232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24042232be0dSLalit Chandivade QLA82XX_DEV_COLD); 24052232be0dSLalit Chandivade 24062232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, 24072232be0dSLalit Chandivade QLA82XX_IDC_VERSION); 24082232be0dSLalit Chandivade 24092232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24102232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24112232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 24122232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24132232be0dSLalit Chandivade 24142232be0dSLalit Chandivade if (rval != QLA_SUCCESS) { 24152232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24162232be0dSLalit Chandivade "FAILED\n", ha->host_no, __func__); 24172232be0dSLalit Chandivade qla4_8xxx_clear_drv_active(ha); 24182232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24192232be0dSLalit Chandivade QLA82XX_DEV_FAILED); 24202232be0dSLalit Chandivade } else { 24212232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24222232be0dSLalit Chandivade "READY\n", ha->host_no, __func__); 24232232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24242232be0dSLalit Chandivade QLA82XX_DEV_READY); 24252232be0dSLalit Chandivade /* Clear driver state register */ 24262232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); 24272232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24287b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24297b3595dfSVikas Chaudhary if (ret) { 24307b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to " 24317b3595dfSVikas Chaudhary "reserve interrupt %d already in use.\n", 24327b3595dfSVikas Chaudhary ha->pdev->irq); 24337b3595dfSVikas Chaudhary rval = QLA_ERROR; 24347b3595dfSVikas Chaudhary } else { 24352232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24367b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24377b3595dfSVikas Chaudhary } 24382232be0dSLalit Chandivade } 24392232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24402232be0dSLalit Chandivade } else { 24412232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " 24422232be0dSLalit Chandivade "the reset owner\n", ha->host_no, __func__, 24432232be0dSLalit Chandivade ha->pdev->devfn); 24442232be0dSLalit Chandivade if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == 24452232be0dSLalit Chandivade QLA82XX_DEV_READY)) { 24462232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24472232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, 24482232be0dSLalit Chandivade PRESERVE_DDB_LIST); 24497b3595dfSVikas Chaudhary if (rval == QLA_SUCCESS) { 24507b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24517b3595dfSVikas Chaudhary if (ret) { 24527b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to" 24537b3595dfSVikas Chaudhary " reserve interrupt %d already in" 24547b3595dfSVikas Chaudhary " use.\n", ha->pdev->irq); 24557b3595dfSVikas Chaudhary rval = QLA_ERROR; 24567b3595dfSVikas Chaudhary } else { 24572232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24587b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24597b3595dfSVikas Chaudhary } 24607b3595dfSVikas Chaudhary } 24612232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24622232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24632232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24642232be0dSLalit Chandivade } 24652232be0dSLalit Chandivade } 24662232be0dSLalit Chandivade clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 24672232be0dSLalit Chandivade return rval; 24682232be0dSLalit Chandivade } 24692232be0dSLalit Chandivade 24702232be0dSLalit Chandivade static pci_ers_result_t 24712232be0dSLalit Chandivade qla4xxx_pci_slot_reset(struct pci_dev *pdev) 24722232be0dSLalit Chandivade { 24732232be0dSLalit Chandivade pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; 24742232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 24752232be0dSLalit Chandivade int rc; 24762232be0dSLalit Chandivade 24772232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", 24782232be0dSLalit Chandivade ha->host_no, __func__); 24792232be0dSLalit Chandivade 24802232be0dSLalit Chandivade if (!is_aer_supported(ha)) 24812232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 24822232be0dSLalit Chandivade 24832232be0dSLalit Chandivade /* Restore the saved state of PCIe device - 24842232be0dSLalit Chandivade * BAR registers, PCI Config space, PCIX, MSI, 24852232be0dSLalit Chandivade * IOV states 24862232be0dSLalit Chandivade */ 24872232be0dSLalit Chandivade pci_restore_state(pdev); 24882232be0dSLalit Chandivade 24892232be0dSLalit Chandivade /* pci_restore_state() clears the saved_state flag of the device 24902232be0dSLalit Chandivade * save restored state which resets saved_state flag 24912232be0dSLalit Chandivade */ 24922232be0dSLalit Chandivade pci_save_state(pdev); 24932232be0dSLalit Chandivade 24942232be0dSLalit Chandivade /* Initialize device or resume if in suspended state */ 24952232be0dSLalit Chandivade rc = pci_enable_device(pdev); 24962232be0dSLalit Chandivade if (rc) { 24972232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable " 24982232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__); 24992232be0dSLalit Chandivade goto exit_slot_reset; 25002232be0dSLalit Chandivade } 25012232be0dSLalit Chandivade 25027b3595dfSVikas Chaudhary ha->isp_ops->disable_intrs(ha); 25032232be0dSLalit Chandivade 25042232be0dSLalit Chandivade if (is_qla8022(ha)) { 25052232be0dSLalit Chandivade if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { 25062232be0dSLalit Chandivade ret = PCI_ERS_RESULT_RECOVERED; 25072232be0dSLalit Chandivade goto exit_slot_reset; 25082232be0dSLalit Chandivade } else 25092232be0dSLalit Chandivade goto exit_slot_reset; 25102232be0dSLalit Chandivade } 25112232be0dSLalit Chandivade 25122232be0dSLalit Chandivade exit_slot_reset: 25132232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" 25142232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__, ret); 25152232be0dSLalit Chandivade return ret; 25162232be0dSLalit Chandivade } 25172232be0dSLalit Chandivade 25182232be0dSLalit Chandivade static void 25192232be0dSLalit Chandivade qla4xxx_pci_resume(struct pci_dev *pdev) 25202232be0dSLalit Chandivade { 25212232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 25222232be0dSLalit Chandivade int ret; 25232232be0dSLalit Chandivade 25242232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", 25252232be0dSLalit Chandivade ha->host_no, __func__); 25262232be0dSLalit Chandivade 25272232be0dSLalit Chandivade ret = qla4xxx_wait_for_hba_online(ha); 25282232be0dSLalit Chandivade if (ret != QLA_SUCCESS) { 25292232be0dSLalit Chandivade ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " 25302232be0dSLalit Chandivade "resume I/O from slot/link_reset\n", ha->host_no, 25312232be0dSLalit Chandivade __func__); 25322232be0dSLalit Chandivade } 25332232be0dSLalit Chandivade 25342232be0dSLalit Chandivade pci_cleanup_aer_uncorrect_error_status(pdev); 25352232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 25362232be0dSLalit Chandivade } 25372232be0dSLalit Chandivade 25382232be0dSLalit Chandivade static struct pci_error_handlers qla4xxx_err_handler = { 25392232be0dSLalit Chandivade .error_detected = qla4xxx_pci_error_detected, 25402232be0dSLalit Chandivade .mmio_enabled = qla4xxx_pci_mmio_enabled, 25412232be0dSLalit Chandivade .slot_reset = qla4xxx_pci_slot_reset, 25422232be0dSLalit Chandivade .resume = qla4xxx_pci_resume, 25432232be0dSLalit Chandivade }; 25442232be0dSLalit Chandivade 2545afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2546afaf5a2dSDavid Somayajulu { 2547afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2548afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2549afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2550afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2551afaf5a2dSDavid Somayajulu }, 2552afaf5a2dSDavid Somayajulu { 2553afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2554afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2555afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2556afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2557afaf5a2dSDavid Somayajulu }, 2558d915058fSDavid C Somayajulu { 2559d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2560d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2561d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2562d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2563d915058fSDavid C Somayajulu }, 2564f4f5df23SVikas Chaudhary { 2565f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2566f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2567f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2568f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2569f4f5df23SVikas Chaudhary }, 2570afaf5a2dSDavid Somayajulu {0, 0}, 2571afaf5a2dSDavid Somayajulu }; 2572afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2573afaf5a2dSDavid Somayajulu 257447975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2575afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2576afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2577afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2578afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 25792232be0dSLalit Chandivade .err_handler = &qla4xxx_err_handler, 2580afaf5a2dSDavid Somayajulu }; 2581afaf5a2dSDavid Somayajulu 2582afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2583afaf5a2dSDavid Somayajulu { 2584afaf5a2dSDavid Somayajulu int ret; 2585afaf5a2dSDavid Somayajulu 2586afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2587afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 258820c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2589afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2590afaf5a2dSDavid Somayajulu printk(KERN_ERR 2591afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2592afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2593afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2594afaf5a2dSDavid Somayajulu goto no_srp_cache; 2595afaf5a2dSDavid Somayajulu } 2596afaf5a2dSDavid Somayajulu 2597afaf5a2dSDavid Somayajulu /* Derive version string. */ 2598afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 259911010fecSAndrew Vasquez if (ql4xextended_error_logging) 2600afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2601afaf5a2dSDavid Somayajulu 2602afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2603afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2604afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2605afaf5a2dSDavid Somayajulu ret = -ENODEV; 2606afaf5a2dSDavid Somayajulu goto release_srb_cache; 2607afaf5a2dSDavid Somayajulu } 2608afaf5a2dSDavid Somayajulu 2609afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2610afaf5a2dSDavid Somayajulu if (ret) 2611afaf5a2dSDavid Somayajulu goto unregister_transport; 2612afaf5a2dSDavid Somayajulu 2613afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2614afaf5a2dSDavid Somayajulu return 0; 26155ae16db3SDoug Maxey 2616afaf5a2dSDavid Somayajulu unregister_transport: 2617afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2618afaf5a2dSDavid Somayajulu release_srb_cache: 2619afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2620afaf5a2dSDavid Somayajulu no_srp_cache: 2621afaf5a2dSDavid Somayajulu return ret; 2622afaf5a2dSDavid Somayajulu } 2623afaf5a2dSDavid Somayajulu 2624afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2625afaf5a2dSDavid Somayajulu { 2626afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2627afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2628afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2629afaf5a2dSDavid Somayajulu } 2630afaf5a2dSDavid Somayajulu 2631afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2632afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2633afaf5a2dSDavid Somayajulu 2634afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2635afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2636afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2637afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2638