1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 3afaf5a2dSDavid Somayajulu * Copyright (c) 2003-2006 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 ql4xdiscoverywait = 60; 33f4f5df23SVikas Chaudhary module_param(ql4xdiscoverywait, int, S_IRUGO | S_IWUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); 35f4f5df23SVikas Chaudhary 36afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 37f4f5df23SVikas Chaudhary module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); 38afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 39f4f5df23SVikas Chaudhary "Don't reset the HBA for driver recovery \n" 40f4f5df23SVikas Chaudhary " 0 - It will reset HBA (Default)\n" 41f4f5df23SVikas Chaudhary " 1 - It will NOT reset HBA"); 42afaf5a2dSDavid Somayajulu 4311010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 44f4f5df23SVikas Chaudhary module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); 4511010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 46afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 47afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 48afaf5a2dSDavid Somayajulu 49f4f5df23SVikas Chaudhary int ql4xenablemsix = 1; 50f4f5df23SVikas Chaudhary module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); 51f4f5df23SVikas Chaudhary MODULE_PARM_DESC(ql4xenablemsix, 52f4f5df23SVikas Chaudhary "Set to enable MSI or MSI-X interrupt mechanism.\n" 53f4f5df23SVikas Chaudhary " 0 = enable INTx interrupt mechanism.\n" 54f4f5df23SVikas Chaudhary " 1 = enable MSI-X interrupt mechanism (Default).\n" 55f4f5df23SVikas Chaudhary " 2 = enable MSI interrupt mechanism."); 56477ffb9dSDavid C Somayajulu 57d510d965SMike Christie #define QL4_DEF_QDEPTH 32 58d510d965SMike Christie 59afaf5a2dSDavid Somayajulu /* 60afaf5a2dSDavid Somayajulu * SCSI host template entry points 61afaf5a2dSDavid Somayajulu */ 6247975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 63afaf5a2dSDavid Somayajulu 64afaf5a2dSDavid Somayajulu /* 65afaf5a2dSDavid Somayajulu * iSCSI template entry points 66afaf5a2dSDavid Somayajulu */ 672174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 682174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 692174a04eSMike Christie struct sockaddr *dst_addr); 70afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 71afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 72afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 73afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 74aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 75aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 76afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 775c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 78afaf5a2dSDavid Somayajulu 79afaf5a2dSDavid Somayajulu /* 80afaf5a2dSDavid Somayajulu * SCSI host template entry points 81afaf5a2dSDavid Somayajulu */ 82f281233dSJeff Garzik static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); 8309a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 84afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 85ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 86afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 87afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 88afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 89afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 90024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 91afaf5a2dSDavid Somayajulu 92f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 93f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 94f4f5df23SVikas Chaudhary 95afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 96afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 97afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 98afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 99afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 100afaf5a2dSDavid Somayajulu 10109a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 102afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 103ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 104afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1055c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 106afaf5a2dSDavid Somayajulu 107afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 108afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 109afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 110afaf5a2dSDavid Somayajulu 111921601b7SMike Christie .scan_finished = iscsi_scan_finished, 112024f801fSMike Christie .scan_start = qla4xxx_scan_start, 113921601b7SMike Christie 114afaf5a2dSDavid Somayajulu .this_id = -1, 115afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 116afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 117afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 118afaf5a2dSDavid Somayajulu 119afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 120afaf5a2dSDavid Somayajulu }; 121afaf5a2dSDavid Somayajulu 122afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 123afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 124afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 125d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 126d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 127aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 1283b2bef1fSVikas Chaudhary ISCSI_TARGET_NAME | ISCSI_TPGT | 1293b2bef1fSVikas Chaudhary ISCSI_TARGET_ALIAS, 1308ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 13122236961SMike Christie ISCSI_HOST_IPADDRESS | 1328ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 133afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 134afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 135afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 136aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 137afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 138afaf5a2dSDavid Somayajulu }; 139afaf5a2dSDavid Somayajulu 140afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 141afaf5a2dSDavid Somayajulu 1425c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1435c656af7SMike Christie { 1445c656af7SMike Christie struct iscsi_cls_session *session; 1455c656af7SMike Christie struct ddb_entry *ddb_entry; 1465c656af7SMike Christie 1475c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1485c656af7SMike Christie ddb_entry = session->dd_data; 1495c656af7SMike Christie 1505c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1515c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1525c656af7SMike Christie return BLK_EH_RESET_TIMER; 1535c656af7SMike Christie else 1545c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1555c656af7SMike Christie } 1565c656af7SMike Christie 157afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 158afaf5a2dSDavid Somayajulu { 159afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 160afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 161afaf5a2dSDavid Somayajulu 162568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 163afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 164afaf5a2dSDavid Somayajulu 1653013cea8SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " 166568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 167568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 1683013cea8SVikas Chaudhary QL4_SESS_RECOVERY_TMO)); 169afaf5a2dSDavid Somayajulu } 170568d303bSMike Christie } 171afaf5a2dSDavid Somayajulu 172aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 173aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 174aa1e93a2SMike Christie { 175aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 176aa1e93a2SMike Christie int len; 177aa1e93a2SMike Christie 178aa1e93a2SMike Christie switch (param) { 179aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1807ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 181aa1e93a2SMike Christie break; 18222236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 18322236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 18422236961SMike Christie ha->ip_address[1], ha->ip_address[2], 18522236961SMike Christie ha->ip_address[3]); 18622236961SMike Christie break; 1878ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 18822236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1898ad5781aSMike Christie break; 190aa1e93a2SMike Christie default: 191aa1e93a2SMike Christie return -ENOSYS; 192aa1e93a2SMike Christie } 193aa1e93a2SMike Christie 194aa1e93a2SMike Christie return len; 195aa1e93a2SMike Christie } 196aa1e93a2SMike Christie 197afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 198afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 199afaf5a2dSDavid Somayajulu { 200afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 201afaf5a2dSDavid Somayajulu int len; 202afaf5a2dSDavid Somayajulu 203afaf5a2dSDavid Somayajulu switch (param) { 204afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 205afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 206afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 207afaf5a2dSDavid Somayajulu break; 208afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 209afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 210afaf5a2dSDavid Somayajulu break; 2113b2bef1fSVikas Chaudhary case ISCSI_PARAM_TARGET_ALIAS: 2123b2bef1fSVikas Chaudhary len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 2133b2bef1fSVikas Chaudhary ddb_entry->iscsi_alias); 2143b2bef1fSVikas Chaudhary break; 215afaf5a2dSDavid Somayajulu default: 216afaf5a2dSDavid Somayajulu return -ENOSYS; 217afaf5a2dSDavid Somayajulu } 218afaf5a2dSDavid Somayajulu 219afaf5a2dSDavid Somayajulu return len; 220afaf5a2dSDavid Somayajulu } 221afaf5a2dSDavid Somayajulu 222afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 223afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 224afaf5a2dSDavid Somayajulu { 225afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 226afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 227afaf5a2dSDavid Somayajulu int len; 228afaf5a2dSDavid Somayajulu 229afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 230afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 231afaf5a2dSDavid Somayajulu 232afaf5a2dSDavid Somayajulu switch (param) { 233afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 234afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 235afaf5a2dSDavid Somayajulu break; 236afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 237afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 23863779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 239afaf5a2dSDavid Somayajulu break; 240afaf5a2dSDavid Somayajulu default: 241afaf5a2dSDavid Somayajulu return -ENOSYS; 242afaf5a2dSDavid Somayajulu } 243afaf5a2dSDavid Somayajulu 244afaf5a2dSDavid Somayajulu return len; 245afaf5a2dSDavid Somayajulu } 246afaf5a2dSDavid Somayajulu 2472174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2482174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2492174a04eSMike Christie struct sockaddr *dst_addr) 250afaf5a2dSDavid Somayajulu { 251afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 252afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 253afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 254afaf5a2dSDavid Somayajulu int ret = 0; 255afaf5a2dSDavid Somayajulu 256afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 257afaf5a2dSDavid Somayajulu 258afaf5a2dSDavid Somayajulu switch (type) { 259afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 260afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 261afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 262afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 263afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 264afaf5a2dSDavid Somayajulu ret = -EIO; 265afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 266afaf5a2dSDavid Somayajulu /* 267afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 268afaf5a2dSDavid Somayajulu */ 269afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 270afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 271afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 272afaf5a2dSDavid Somayajulu ret = -EIO; 273afaf5a2dSDavid Somayajulu } else 274afaf5a2dSDavid Somayajulu ret = -ENOSYS; 275afaf5a2dSDavid Somayajulu break; 276afaf5a2dSDavid Somayajulu default: 277afaf5a2dSDavid Somayajulu ret = -ENOSYS; 278afaf5a2dSDavid Somayajulu } 279afaf5a2dSDavid Somayajulu return ret; 280afaf5a2dSDavid Somayajulu } 281afaf5a2dSDavid Somayajulu 282afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 283afaf5a2dSDavid Somayajulu { 284afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 285afaf5a2dSDavid Somayajulu return; 286afaf5a2dSDavid Somayajulu 287afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 28826974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 289afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 290afaf5a2dSDavid Somayajulu } 291afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 292afaf5a2dSDavid Somayajulu } 293afaf5a2dSDavid Somayajulu 294afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 295afaf5a2dSDavid Somayajulu { 296afaf5a2dSDavid Somayajulu int err; 297afaf5a2dSDavid Somayajulu 2983013cea8SVikas Chaudhary ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO; 2993013cea8SVikas Chaudhary 300afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 301afaf5a2dSDavid Somayajulu if (err) { 302afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 303afaf5a2dSDavid Somayajulu return err; 304afaf5a2dSDavid Somayajulu } 305afaf5a2dSDavid Somayajulu 3065d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 307afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 308afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 309afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 310afaf5a2dSDavid Somayajulu return -ENOMEM; 311afaf5a2dSDavid Somayajulu } 312b635930dSMike Christie 313b635930dSMike Christie /* finally ready to go */ 314b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 315afaf5a2dSDavid Somayajulu return 0; 316afaf5a2dSDavid Somayajulu } 317afaf5a2dSDavid Somayajulu 318afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 319afaf5a2dSDavid Somayajulu { 320afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 321afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 322afaf5a2dSDavid Somayajulu 3235d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3245d91e209SMike Christie sizeof(struct ddb_entry)); 325afaf5a2dSDavid Somayajulu if (!sess) 326afaf5a2dSDavid Somayajulu return NULL; 327afaf5a2dSDavid Somayajulu 328afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 329afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 330afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 331afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 332afaf5a2dSDavid Somayajulu return ddb_entry; 333afaf5a2dSDavid Somayajulu } 334afaf5a2dSDavid Somayajulu 335024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 336024f801fSMike Christie { 337024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 338024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 339024f801fSMike Christie 340024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 341024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 342024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 343024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 344024f801fSMike Christie } 345024f801fSMike Christie } 346024f801fSMike Christie 347afaf5a2dSDavid Somayajulu /* 348afaf5a2dSDavid Somayajulu * Timer routines 349afaf5a2dSDavid Somayajulu */ 350afaf5a2dSDavid Somayajulu 351afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 352afaf5a2dSDavid Somayajulu unsigned long interval) 353afaf5a2dSDavid Somayajulu { 354afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 355afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 356afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 357afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 358afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 359afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 360afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 361afaf5a2dSDavid Somayajulu ha->timer_active = 1; 362afaf5a2dSDavid Somayajulu } 363afaf5a2dSDavid Somayajulu 364afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 365afaf5a2dSDavid Somayajulu { 366afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 367afaf5a2dSDavid Somayajulu ha->timer_active = 0; 368afaf5a2dSDavid Somayajulu } 369afaf5a2dSDavid Somayajulu 370afaf5a2dSDavid Somayajulu /*** 371afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 372afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 373afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 374afaf5a2dSDavid Somayajulu * 375f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 376afaf5a2dSDavid Somayajulu **/ 377afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 378afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 379afaf5a2dSDavid Somayajulu { 380f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 381afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 382f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 383f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 384f4f5df23SVikas Chaudhary } else 385f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 386f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 387f4f5df23SVikas Chaudhary 388b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 389e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 390afaf5a2dSDavid Somayajulu } 391afaf5a2dSDavid Somayajulu 392f4f5df23SVikas Chaudhary /** 393f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 394f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 395f4f5df23SVikas Chaudhary * 396f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 397f4f5df23SVikas Chaudhary **/ 398f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 399f4f5df23SVikas Chaudhary { 400f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 401f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 402f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 403f4f5df23SVikas Chaudhary } 404f4f5df23SVikas Chaudhary } 405f4f5df23SVikas Chaudhary 406afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 407afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 408afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 409afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 410afaf5a2dSDavid Somayajulu { 411afaf5a2dSDavid Somayajulu struct srb *srb; 412afaf5a2dSDavid Somayajulu 413afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 414afaf5a2dSDavid Somayajulu if (!srb) 415afaf5a2dSDavid Somayajulu return srb; 416afaf5a2dSDavid Somayajulu 41709a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 418afaf5a2dSDavid Somayajulu srb->ha = ha; 419afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 420afaf5a2dSDavid Somayajulu srb->cmd = cmd; 421afaf5a2dSDavid Somayajulu srb->flags = 0; 4225369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 423afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 424afaf5a2dSDavid Somayajulu 425afaf5a2dSDavid Somayajulu return srb; 426afaf5a2dSDavid Somayajulu } 427afaf5a2dSDavid Somayajulu 428afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 429afaf5a2dSDavid Somayajulu { 430afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 431afaf5a2dSDavid Somayajulu 432afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4335f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 434afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 435afaf5a2dSDavid Somayajulu } 4365369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 437afaf5a2dSDavid Somayajulu } 438afaf5a2dSDavid Somayajulu 43909a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 440afaf5a2dSDavid Somayajulu { 44109a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 442afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 44309a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 444afaf5a2dSDavid Somayajulu 445afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 446afaf5a2dSDavid Somayajulu 447afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 448afaf5a2dSDavid Somayajulu 449afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 450afaf5a2dSDavid Somayajulu } 451afaf5a2dSDavid Somayajulu 452afaf5a2dSDavid Somayajulu /** 453afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 454afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 455afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 456afaf5a2dSDavid Somayajulu * that the command has been processed. 457afaf5a2dSDavid Somayajulu * 458afaf5a2dSDavid Somayajulu * Remarks: 459afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 460afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 461afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 462afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 463afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 464afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 465afaf5a2dSDavid Somayajulu **/ 466f281233dSJeff Garzik static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, 467afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 468afaf5a2dSDavid Somayajulu { 469afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 470afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4717fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 472afaf5a2dSDavid Somayajulu struct srb *srb; 473afaf5a2dSDavid Somayajulu int rval; 474afaf5a2dSDavid Somayajulu 4752232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 4762232be0dSLalit Chandivade if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) 4772232be0dSLalit Chandivade cmd->result = DID_NO_CONNECT << 16; 4782232be0dSLalit Chandivade else 4792232be0dSLalit Chandivade cmd->result = DID_REQUEUE << 16; 4802232be0dSLalit Chandivade goto qc_fail_command; 4812232be0dSLalit Chandivade } 4822232be0dSLalit Chandivade 4837fb1921bSMike Christie if (!sess) { 4847fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4857fb1921bSMike Christie goto qc_fail_command; 4867fb1921bSMike Christie } 4877fb1921bSMike Christie 4887fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4897fb1921bSMike Christie if (rval) { 4907fb1921bSMike Christie cmd->result = rval; 4917fb1921bSMike Christie goto qc_fail_command; 4927fb1921bSMike Christie } 4937fb1921bSMike Christie 494afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 495afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 496afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 497afaf5a2dSDavid Somayajulu goto qc_fail_command; 498afaf5a2dSDavid Somayajulu } 499c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 500afaf5a2dSDavid Somayajulu } 501afaf5a2dSDavid Somayajulu 502f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 503f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 504f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 505f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 506f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 507f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 508f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 509477ffb9dSDavid C Somayajulu goto qc_host_busy; 510477ffb9dSDavid C Somayajulu 511afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 512afaf5a2dSDavid Somayajulu 513afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 514afaf5a2dSDavid Somayajulu if (!srb) 515afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 516afaf5a2dSDavid Somayajulu 517afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 518afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 519afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 520afaf5a2dSDavid Somayajulu 521afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 522afaf5a2dSDavid Somayajulu return 0; 523afaf5a2dSDavid Somayajulu 524afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 525afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 526afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 527afaf5a2dSDavid Somayajulu 528afaf5a2dSDavid Somayajulu qc_host_busy_lock: 529afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 530afaf5a2dSDavid Somayajulu 531afaf5a2dSDavid Somayajulu qc_host_busy: 532afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 533afaf5a2dSDavid Somayajulu 534afaf5a2dSDavid Somayajulu qc_fail_command: 535afaf5a2dSDavid Somayajulu done(cmd); 536afaf5a2dSDavid Somayajulu 537afaf5a2dSDavid Somayajulu return 0; 538afaf5a2dSDavid Somayajulu } 539afaf5a2dSDavid Somayajulu 540f281233dSJeff Garzik static DEF_SCSI_QCMD(qla4xxx_queuecommand) 541f281233dSJeff Garzik 542afaf5a2dSDavid Somayajulu /** 543afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 544afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 545afaf5a2dSDavid Somayajulu * 546afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 547afaf5a2dSDavid Somayajulu **/ 548afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 549afaf5a2dSDavid Somayajulu { 550afaf5a2dSDavid Somayajulu if (ha->queues) 551afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 552afaf5a2dSDavid Somayajulu ha->queues_dma); 553afaf5a2dSDavid Somayajulu 554afaf5a2dSDavid Somayajulu ha->queues_len = 0; 555afaf5a2dSDavid Somayajulu ha->queues = NULL; 556afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 557afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 558afaf5a2dSDavid Somayajulu ha->request_dma = 0; 559afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 560afaf5a2dSDavid Somayajulu ha->response_dma = 0; 561afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 562afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 563afaf5a2dSDavid Somayajulu 564afaf5a2dSDavid Somayajulu /* Free srb pool. */ 565afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 566afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 567afaf5a2dSDavid Somayajulu 568afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 569afaf5a2dSDavid Somayajulu 570afaf5a2dSDavid Somayajulu /* release io space registers */ 571f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 572f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 573f4f5df23SVikas Chaudhary iounmap( 574f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 575f4f5df23SVikas Chaudhary } else if (ha->reg) 576afaf5a2dSDavid Somayajulu iounmap(ha->reg); 577afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 578afaf5a2dSDavid Somayajulu } 579afaf5a2dSDavid Somayajulu 580afaf5a2dSDavid Somayajulu /** 581afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 582afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 583afaf5a2dSDavid Somayajulu * 584afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 585afaf5a2dSDavid Somayajulu * for srbs. 586afaf5a2dSDavid Somayajulu **/ 587afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 588afaf5a2dSDavid Somayajulu { 589afaf5a2dSDavid Somayajulu unsigned long align; 590afaf5a2dSDavid Somayajulu 591afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 592afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 593afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 594afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 595afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 596afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 597afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 598afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 599afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 600c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 601afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 602afaf5a2dSDavid Somayajulu 603afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 604afaf5a2dSDavid Somayajulu } 605afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 606afaf5a2dSDavid Somayajulu 607afaf5a2dSDavid Somayajulu /* 608afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 609afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 610afaf5a2dSDavid Somayajulu */ 611afaf5a2dSDavid Somayajulu align = 0; 612afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 613afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 614afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 615afaf5a2dSDavid Somayajulu 616afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 617afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 618afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 619afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 620afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 621afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 622afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 623afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 624afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 625afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 626afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 627afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 628afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 629afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 630afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 631afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 632afaf5a2dSDavid Somayajulu 633afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 634afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 635afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 636afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 637c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 638afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 639afaf5a2dSDavid Somayajulu 640afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 641afaf5a2dSDavid Somayajulu } 642afaf5a2dSDavid Somayajulu 643afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 644afaf5a2dSDavid Somayajulu 645afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 646afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 647afaf5a2dSDavid Somayajulu return QLA_ERROR; 648afaf5a2dSDavid Somayajulu } 649afaf5a2dSDavid Somayajulu 650afaf5a2dSDavid Somayajulu /** 651f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 652f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 653f4f5df23SVikas Chaudhary * 654f4f5df23SVikas Chaudhary * Context: Interrupt 655f4f5df23SVikas Chaudhary **/ 656f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 657f4f5df23SVikas Chaudhary { 658f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 659f4f5df23SVikas Chaudhary 660f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 6612232be0dSLalit Chandivade /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ 6622232be0dSLalit Chandivade if (fw_heartbeat_counter == 0xffffffff) { 6632232be0dSLalit Chandivade DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " 6642232be0dSLalit Chandivade "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", 6652232be0dSLalit Chandivade ha->host_no, __func__)); 6662232be0dSLalit Chandivade return; 6672232be0dSLalit Chandivade } 668f4f5df23SVikas Chaudhary 669f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 670f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 671f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 672f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 673f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 674f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 675f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 67621033639SNilesh Javali 677f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 678f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 679f4f5df23SVikas Chaudhary * DPC */ 680f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 681f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 682f4f5df23SVikas Chaudhary else { 683f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 684f4f5df23SVikas Chaudhary ha->host_no, __func__); 685f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 686f4f5df23SVikas Chaudhary } 687f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 68821033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 689f4f5df23SVikas Chaudhary } 69099457d75SLalit Chandivade } else 69199457d75SLalit Chandivade ha->seconds_since_last_heartbeat = 0; 69299457d75SLalit Chandivade 693f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 694f4f5df23SVikas Chaudhary } 695f4f5df23SVikas Chaudhary 696f4f5df23SVikas Chaudhary /** 697f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 698f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 699f4f5df23SVikas Chaudhary * 700f4f5df23SVikas Chaudhary * Context: Interrupt 701f4f5df23SVikas Chaudhary **/ 702f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 703f4f5df23SVikas Chaudhary { 704f4f5df23SVikas Chaudhary uint32_t dev_state; 705f4f5df23SVikas Chaudhary 706f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 707f4f5df23SVikas Chaudhary 708f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 709f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags)) { 710f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 711f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 712f4f5df23SVikas Chaudhary printk("scsi%ld: %s: HW State: NEED RESET!\n", 713f4f5df23SVikas Chaudhary ha->host_no, __func__); 714f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 715f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 71621033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 717f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 718f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 719f4f5df23SVikas Chaudhary printk("scsi%ld: %s: HW State: NEED QUIES!\n", 720f4f5df23SVikas Chaudhary ha->host_no, __func__); 721f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 722f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 723f4f5df23SVikas Chaudhary } else { 724f4f5df23SVikas Chaudhary /* Check firmware health */ 725f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 726f4f5df23SVikas Chaudhary } 727f4f5df23SVikas Chaudhary } 728f4f5df23SVikas Chaudhary } 729f4f5df23SVikas Chaudhary 730f4f5df23SVikas Chaudhary /** 731afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 732afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 733afaf5a2dSDavid Somayajulu **/ 734afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 735afaf5a2dSDavid Somayajulu { 736afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 737afaf5a2dSDavid Somayajulu int start_dpc = 0; 7382232be0dSLalit Chandivade uint16_t w; 7392232be0dSLalit Chandivade 7402232be0dSLalit Chandivade /* If we are in the middle of AER/EEH processing 7412232be0dSLalit Chandivade * skip any processing and reschedule the timer 7422232be0dSLalit Chandivade */ 7432232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 7442232be0dSLalit Chandivade mod_timer(&ha->timer, jiffies + HZ); 7452232be0dSLalit Chandivade return; 7462232be0dSLalit Chandivade } 7472232be0dSLalit Chandivade 7482232be0dSLalit Chandivade /* Hardware read to trigger an EEH error during mailbox waits. */ 7492232be0dSLalit Chandivade if (!pci_channel_offline(ha->pdev)) 7502232be0dSLalit Chandivade pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); 751afaf5a2dSDavid Somayajulu 752f4f5df23SVikas Chaudhary if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) { 753f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n", 754f4f5df23SVikas Chaudhary __func__)); 755f4f5df23SVikas Chaudhary return; 756f4f5df23SVikas Chaudhary } 757f4f5df23SVikas Chaudhary 758f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 759f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 760f4f5df23SVikas Chaudhary } 761f4f5df23SVikas Chaudhary 762afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 763afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 764afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 765afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 766afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 767afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 768afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 769afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 770afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 771afaf5a2dSDavid Somayajulu == 0) { 772afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 773afaf5a2dSDavid Somayajulu retry_relogin_timer, 774afaf5a2dSDavid Somayajulu INVALID_ENTRY); 775afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 776afaf5a2dSDavid Somayajulu &ha->dpc_flags); 777afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 778f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 779afaf5a2dSDavid Somayajulu " login device\n", 780afaf5a2dSDavid Somayajulu ha->host_no, __func__, 781afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 782afaf5a2dSDavid Somayajulu } else 783afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 784afaf5a2dSDavid Somayajulu retry_relogin_timer); 785afaf5a2dSDavid Somayajulu } 786afaf5a2dSDavid Somayajulu } 787afaf5a2dSDavid Somayajulu 788afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 789afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 790afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 791afaf5a2dSDavid Somayajulu /* 792afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 793afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 794afaf5a2dSDavid Somayajulu */ 795afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 796afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 797afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 798afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 799afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 800afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 801f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 802afaf5a2dSDavid Somayajulu " timed out-retrying" 803afaf5a2dSDavid Somayajulu " relogin (%d)\n", 804afaf5a2dSDavid Somayajulu ha->host_no, 805afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 806afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 807afaf5a2dSDavid Somayajulu relogin_retry_count)) 808afaf5a2dSDavid Somayajulu ); 809afaf5a2dSDavid Somayajulu start_dpc++; 810f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 811afaf5a2dSDavid Somayajulu "initate relogin after" 812afaf5a2dSDavid Somayajulu " %d seconds\n", 813afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 814afaf5a2dSDavid Somayajulu ddb_entry->target, 815afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 816afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 817afaf5a2dSDavid Somayajulu ); 818afaf5a2dSDavid Somayajulu 819afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 820afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 821afaf5a2dSDavid Somayajulu } 822afaf5a2dSDavid Somayajulu } 823afaf5a2dSDavid Somayajulu } 824afaf5a2dSDavid Somayajulu 825f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 826afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 827afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 828afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 829afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 830afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 831afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 832afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 833afaf5a2dSDavid Somayajulu } 834f4f5df23SVikas Chaudhary } 835afaf5a2dSDavid Somayajulu 836afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 837afaf5a2dSDavid Somayajulu if ((start_dpc || 838afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 839afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 840afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 841f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 842afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 843afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 844065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 845f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 846f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 847afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 848f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags) && 849afaf5a2dSDavid Somayajulu ha->dpc_thread) { 850afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 851afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 852afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 853f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 854afaf5a2dSDavid Somayajulu } 855afaf5a2dSDavid Somayajulu 856afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 857afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 858afaf5a2dSDavid Somayajulu 859afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 860afaf5a2dSDavid Somayajulu } 861afaf5a2dSDavid Somayajulu 862afaf5a2dSDavid Somayajulu /** 863afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 864afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 865afaf5a2dSDavid Somayajulu * 866afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 867afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 868afaf5a2dSDavid Somayajulu **/ 869afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 870afaf5a2dSDavid Somayajulu { 871afaf5a2dSDavid Somayajulu uint32_t index = 0; 872afaf5a2dSDavid Somayajulu unsigned long flags; 873afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 874afaf5a2dSDavid Somayajulu 875f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 876f4f5df23SVikas Chaudhary 877f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 878f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 879f4f5df23SVikas Chaudhary 880f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 881afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 882afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 883afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 884afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 885a1e0063dSMike Christie /* 886a1e0063dSMike Christie * We cannot just check if the index is valid, 887a1e0063dSMike Christie * becase if we are run from the scsi eh, then 888a1e0063dSMike Christie * the scsi/block layer is going to prevent 889a1e0063dSMike Christie * the tag from being released. 890a1e0063dSMike Christie */ 891a1e0063dSMike Christie if (cmd != NULL && CMD_SP(cmd)) 892afaf5a2dSDavid Somayajulu break; 893afaf5a2dSDavid Somayajulu } 894afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 895afaf5a2dSDavid Somayajulu 896afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 897f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 898f4f5df23SVikas Chaudhary return QLA_SUCCESS; 899afaf5a2dSDavid Somayajulu 900afaf5a2dSDavid Somayajulu msleep(1000); 901afaf5a2dSDavid Somayajulu } 902f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 903f4f5df23SVikas Chaudhary * return ERROR. */ 904f4f5df23SVikas Chaudhary return QLA_ERROR; 905afaf5a2dSDavid Somayajulu } 906afaf5a2dSDavid Somayajulu 907f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 908afaf5a2dSDavid Somayajulu { 909afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 910477ffb9dSDavid C Somayajulu unsigned long flags = 0; 911477ffb9dSDavid C Somayajulu 912477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 913afaf5a2dSDavid Somayajulu 914f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 915f4f5df23SVikas Chaudhary return QLA_ERROR; 916f4f5df23SVikas Chaudhary 917afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 918afaf5a2dSDavid Somayajulu 919afaf5a2dSDavid Somayajulu /* 920afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 921afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 922afaf5a2dSDavid Somayajulu */ 923afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 924afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 925afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 926afaf5a2dSDavid Somayajulu 927afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 928afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 929afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 930afaf5a2dSDavid Somayajulu 931afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 932f4f5df23SVikas Chaudhary return QLA_SUCCESS; 933477ffb9dSDavid C Somayajulu } 934477ffb9dSDavid C Somayajulu 935477ffb9dSDavid C Somayajulu /** 936477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 937477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 938477ffb9dSDavid C Somayajulu **/ 939477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 940477ffb9dSDavid C Somayajulu { 941477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 942477ffb9dSDavid C Somayajulu unsigned long flags = 0; 943f931c534SVikas Chaudhary int status; 944477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 945477ffb9dSDavid C Somayajulu 946f931c534SVikas Chaudhary status = qla4xxx_hw_reset(ha); 947f931c534SVikas Chaudhary if (status != QLA_SUCCESS) 948f931c534SVikas Chaudhary return status; 949afaf5a2dSDavid Somayajulu 950f931c534SVikas Chaudhary status = QLA_ERROR; 951afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 952afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 953afaf5a2dSDavid Somayajulu do { 954afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 955afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 956afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 957afaf5a2dSDavid Somayajulu 958afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 959afaf5a2dSDavid Somayajulu break; 960afaf5a2dSDavid Somayajulu 961afaf5a2dSDavid Somayajulu msleep(1000); 962afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 963afaf5a2dSDavid Somayajulu 964afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 965afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 966afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 967afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 968afaf5a2dSDavid Somayajulu ha->host_no)); 969afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 970afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 971afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 972afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 973afaf5a2dSDavid Somayajulu } 974afaf5a2dSDavid Somayajulu 975afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 976afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 977afaf5a2dSDavid Somayajulu do { 978afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 979afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 980afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 981afaf5a2dSDavid Somayajulu 982afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 983afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 984afaf5a2dSDavid Somayajulu break; 985afaf5a2dSDavid Somayajulu } 986afaf5a2dSDavid Somayajulu 987afaf5a2dSDavid Somayajulu msleep(1000); 988afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 989afaf5a2dSDavid Somayajulu 990afaf5a2dSDavid Somayajulu /* 991afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 992afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 993afaf5a2dSDavid Somayajulu */ 994afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 995afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 996afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 997afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 998afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 999afaf5a2dSDavid Somayajulu } 1000afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1001afaf5a2dSDavid Somayajulu 1002afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 1003afaf5a2dSDavid Somayajulu * function is also enabled. 1004afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 1005afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 1006afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 1007afaf5a2dSDavid Somayajulu */ 1008afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 1009afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 1010afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1011afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 1012afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1013afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1014afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1015afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1016afaf5a2dSDavid Somayajulu do { 1017afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1018afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1019afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1020afaf5a2dSDavid Somayajulu 1021afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 1022afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1023afaf5a2dSDavid Somayajulu break; 1024afaf5a2dSDavid Somayajulu } 1025afaf5a2dSDavid Somayajulu 1026afaf5a2dSDavid Somayajulu msleep(1000); 1027afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1028afaf5a2dSDavid Somayajulu } 1029afaf5a2dSDavid Somayajulu 1030afaf5a2dSDavid Somayajulu return status; 1031afaf5a2dSDavid Somayajulu } 1032afaf5a2dSDavid Somayajulu 1033afaf5a2dSDavid Somayajulu /** 1034f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 1035afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1036f4f5df23SVikas Chaudhary * @res: returned scsi status 1037afaf5a2dSDavid Somayajulu * 1038afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 1039afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 1040afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 1041afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 1042afaf5a2dSDavid Somayajulu **/ 1043f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1044afaf5a2dSDavid Somayajulu { 1045afaf5a2dSDavid Somayajulu struct srb *srb; 1046afaf5a2dSDavid Somayajulu int i; 1047afaf5a2dSDavid Somayajulu unsigned long flags; 1048afaf5a2dSDavid Somayajulu 1049afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1050afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1051afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1052afaf5a2dSDavid Somayajulu if (srb != NULL) { 1053f4f5df23SVikas Chaudhary srb->cmd->result = res; 105409a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1055afaf5a2dSDavid Somayajulu } 1056afaf5a2dSDavid Somayajulu } 1057afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1058afaf5a2dSDavid Somayajulu } 1059afaf5a2dSDavid Somayajulu 1060f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1061f4f5df23SVikas Chaudhary { 1062f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1063f4f5df23SVikas Chaudhary 1064f4f5df23SVikas Chaudhary /* Disable the board */ 1065f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1066f4f5df23SVikas Chaudhary set_bit(AF_HBA_GOING_AWAY, &ha->flags); 1067f4f5df23SVikas Chaudhary 1068f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1069f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1070f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1071f4f5df23SVikas Chaudhary } 1072f4f5df23SVikas Chaudhary 1073afaf5a2dSDavid Somayajulu /** 1074afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1075afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1076afaf5a2dSDavid Somayajulu **/ 1077f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1078afaf5a2dSDavid Somayajulu { 1079f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1080f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1081afaf5a2dSDavid Somayajulu 1082afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1083f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1084afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 108550a29aecSMike Christie 1086f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1087afaf5a2dSDavid Somayajulu 1088f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1089afaf5a2dSDavid Somayajulu 1090f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1091f4f5df23SVikas Chaudhary reset_chip = 1; 1092afaf5a2dSDavid Somayajulu 1093f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1094f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1095f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1096f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1097f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1098afaf5a2dSDavid Somayajulu } 1099afaf5a2dSDavid Somayajulu 1100f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1101f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1102f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1103f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1104f4f5df23SVikas Chaudhary 1105f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1106f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1107f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1108f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1109f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 11102bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1111f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1112f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1113f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1114f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1115f4f5df23SVikas Chaudhary } else { 1116f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1117f4f5df23SVikas Chaudhary * reset the entire chip */ 1118f4f5df23SVikas Chaudhary reset_chip = 1; 1119f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1120f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1121f4f5df23SVikas Chaudhary } 1122f4f5df23SVikas Chaudhary } 1123f4f5df23SVikas Chaudhary 1124f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1125f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1126f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1127f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 11282bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1129f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1130f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1131f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1132f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1133f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1134f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1135f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1136f4f5df23SVikas Chaudhary } 1137f4f5df23SVikas Chaudhary 1138f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1139f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1140f4f5df23SVikas Chaudhary 1141f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1142f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1143f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1144f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1145f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1146f4f5df23SVikas Chaudhary * stepping on top of the other */ 1147f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1148f4f5df23SVikas Chaudhary ssleep(6); 1149f4f5df23SVikas Chaudhary 1150f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1151f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1152f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1153f4f5df23SVikas Chaudhary } 1154f4f5df23SVikas Chaudhary 1155f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1156f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1157f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1158f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1159f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1160afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1161f4f5df23SVikas Chaudhary * resetting the ha. 1162f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1163f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1164f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1165afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1166afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1167afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1168afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1169afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1170afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1171afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1172afaf5a2dSDavid Somayajulu } else { 1173afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1174afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1175afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1176afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1177afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1178afaf5a2dSDavid Somayajulu ha->host_no, 1179afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1180afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1181afaf5a2dSDavid Somayajulu } 1182afaf5a2dSDavid Somayajulu 1183afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1184afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1185afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1186afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1187afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1188afaf5a2dSDavid Somayajulu ha->host_no)); 1189f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1190afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1191afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1192f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1193afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1194afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1195afaf5a2dSDavid Somayajulu } 1196afaf5a2dSDavid Somayajulu } 1197afaf5a2dSDavid Somayajulu } else { 1198afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1199f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1200afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1201afaf5a2dSDavid Somayajulu } 1202afaf5a2dSDavid Somayajulu 1203afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1204afaf5a2dSDavid Somayajulu 1205f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1206f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1207afaf5a2dSDavid Somayajulu 1208f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1209f4f5df23SVikas Chaudhary 1210f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1211f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 1212f4f5df23SVikas Chaudhary status == QLA_ERROR ? "FAILED" : "SUCCEDED")); 1213f4f5df23SVikas Chaudhary 1214afaf5a2dSDavid Somayajulu return status; 1215afaf5a2dSDavid Somayajulu } 1216afaf5a2dSDavid Somayajulu 1217f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1218f4f5df23SVikas Chaudhary { 1219f4f5df23SVikas Chaudhary if (ha->dpc_thread && 1220f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { 1221f4f5df23SVikas Chaudhary set_bit(AF_DPC_SCHEDULED, &ha->flags); 1222f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1223f4f5df23SVikas Chaudhary } 1224f4f5df23SVikas Chaudhary } 1225f4f5df23SVikas Chaudhary 1226afaf5a2dSDavid Somayajulu /** 1227afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1228afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1229afaf5a2dSDavid Somayajulu * 1230afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1231afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1232afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1233afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1234afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1235afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1236afaf5a2dSDavid Somayajulu **/ 1237c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1238afaf5a2dSDavid Somayajulu { 1239c4028958SDavid Howells struct scsi_qla_host *ha = 1240c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1241afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1242477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1243afaf5a2dSDavid Somayajulu 1244f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1245f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1246f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1247afaf5a2dSDavid Somayajulu 1248afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1249afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 12500753b487SVikas Chaudhary goto do_dpc_exit; 1251afaf5a2dSDavid Somayajulu 12522232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 12532232be0dSLalit Chandivade DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", 12542232be0dSLalit Chandivade ha->host_no, __func__, ha->flags)); 12552232be0dSLalit Chandivade goto do_dpc_exit; 12562232be0dSLalit Chandivade } 12572232be0dSLalit Chandivade 1258f4f5df23SVikas Chaudhary /* HBA is in the process of being permanently disabled. 1259f4f5df23SVikas Chaudhary * Don't process anything */ 1260f4f5df23SVikas Chaudhary if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) 1261f4f5df23SVikas Chaudhary return; 1262f4f5df23SVikas Chaudhary 1263f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1264f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1265f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1266f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1267f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1268f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1269f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1270f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1271f4f5df23SVikas Chaudhary } 1272f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1273f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1274f4f5df23SVikas Chaudhary } 1275f4f5df23SVikas Chaudhary } 1276f4f5df23SVikas Chaudhary 1277f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1278f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1279afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1280f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1281f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1282f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1283f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1284f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1285f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1286f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1287f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1288f4f5df23SVikas Chaudhary } 1289f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1290f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1291f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1292afaf5a2dSDavid Somayajulu 1293477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1294afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1295afaf5a2dSDavid Somayajulu 1296afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1297afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1298afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1299afaf5a2dSDavid Somayajulu break; 1300afaf5a2dSDavid Somayajulu msleep(1000); 1301afaf5a2dSDavid Somayajulu } 1302afaf5a2dSDavid Somayajulu if (wait_time == 0) 1303afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1304afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1305afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1306f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1307477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1308477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1309f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1310477ffb9dSDavid C Somayajulu } 1311477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1312477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1313f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1314afaf5a2dSDavid Somayajulu } 1315afaf5a2dSDavid Somayajulu } 1316afaf5a2dSDavid Somayajulu 1317f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1318afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1319afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1320afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1321afaf5a2dSDavid Somayajulu 1322afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1323afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1324afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1325afaf5a2dSDavid Somayajulu 1326065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1327065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1328065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1329065aa1b4SVikas Chaudhary /* ---- link down? --- */ 1330065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1331065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1332065aa1b4SVikas Chaudhary if (atomic_read(&ddb_entry->state) == 1333065aa1b4SVikas Chaudhary DDB_STATE_ONLINE) 1334065aa1b4SVikas Chaudhary qla4xxx_mark_device_missing(ha, 1335065aa1b4SVikas Chaudhary ddb_entry); 1336065aa1b4SVikas Chaudhary } 1337065aa1b4SVikas Chaudhary } else { 1338065aa1b4SVikas Chaudhary /* ---- link up? --- * 1339065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1340065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1341065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1342065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1343065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1344065aa1b4SVikas Chaudhary 1345065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1346065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1347065aa1b4SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == 1348065aa1b4SVikas Chaudhary DDB_STATE_MISSING) || 1349065aa1b4SVikas Chaudhary (atomic_read(&ddb_entry->state) == 1350065aa1b4SVikas Chaudhary DDB_STATE_DEAD)) { 1351065aa1b4SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 1352065aa1b4SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 1353065aa1b4SVikas Chaudhary atomic_set(&ddb_entry->state, 1354065aa1b4SVikas Chaudhary DDB_STATE_ONLINE); 1355c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 1356065aa1b4SVikas Chaudhary "scsi%ld: %s: ddb[%d]" 1357f4f5df23SVikas Chaudhary " marked ONLINE\n", 1358065aa1b4SVikas Chaudhary ha->host_no, __func__, 1359f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index); 1360065aa1b4SVikas Chaudhary 1361065aa1b4SVikas Chaudhary iscsi_unblock_session( 1362065aa1b4SVikas Chaudhary ddb_entry->sess); 1363065aa1b4SVikas Chaudhary } else 1364065aa1b4SVikas Chaudhary qla4xxx_relogin_device( 1365065aa1b4SVikas Chaudhary ha, ddb_entry); 1366065aa1b4SVikas Chaudhary } 1367065aa1b4SVikas Chaudhary 1368065aa1b4SVikas Chaudhary } 1369065aa1b4SVikas Chaudhary } 1370065aa1b4SVikas Chaudhary } 1371065aa1b4SVikas Chaudhary 1372afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1373afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1374afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1375afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1376afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1377afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1378afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1379afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1380afaf5a2dSDavid Somayajulu 1381afaf5a2dSDavid Somayajulu /* 1382afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1383afaf5a2dSDavid Somayajulu * in continuing further. 1384afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1385afaf5a2dSDavid Somayajulu * the system. 1386afaf5a2dSDavid Somayajulu */ 1387afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1388afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1389afaf5a2dSDavid Somayajulu "need to reset hba\n", 1390afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1391afaf5a2dSDavid Somayajulu break; 1392afaf5a2dSDavid Somayajulu } 1393afaf5a2dSDavid Somayajulu } 1394afaf5a2dSDavid Somayajulu } 13950753b487SVikas Chaudhary 13960753b487SVikas Chaudhary do_dpc_exit: 1397f4f5df23SVikas Chaudhary clear_bit(AF_DPC_SCHEDULED, &ha->flags); 1398afaf5a2dSDavid Somayajulu } 1399afaf5a2dSDavid Somayajulu 1400afaf5a2dSDavid Somayajulu /** 1401afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1402afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1403afaf5a2dSDavid Somayajulu **/ 1404afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1405afaf5a2dSDavid Somayajulu { 1406afaf5a2dSDavid Somayajulu 1407afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1408afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1409f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1410afaf5a2dSDavid Somayajulu } 1411afaf5a2dSDavid Somayajulu 1412afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1413afaf5a2dSDavid Somayajulu if (ha->timer_active) 1414afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1415afaf5a2dSDavid Somayajulu 1416f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1417f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1418f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1419f4f5df23SVikas Chaudhary 1420f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1421f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1422f4f5df23SVikas Chaudhary 1423f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1424f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1425f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1426f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1427f4f5df23SVikas Chaudhary } 1428f4f5df23SVikas Chaudhary 1429afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1430afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1431f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1432afaf5a2dSDavid Somayajulu 1433bee4fe8eSDavid C Somayajulu /* free extra memory */ 1434bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1435f4f5df23SVikas Chaudhary } 1436bee4fe8eSDavid C Somayajulu 1437f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1438f4f5df23SVikas Chaudhary { 1439f4f5df23SVikas Chaudhary int status = 0; 1440f4f5df23SVikas Chaudhary uint8_t revision_id; 1441f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1442f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1443afaf5a2dSDavid Somayajulu 1444f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1445f4f5df23SVikas Chaudhary if (status) { 1446f4f5df23SVikas Chaudhary printk(KERN_WARNING 1447f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1448f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1449f4f5df23SVikas Chaudhary goto iospace_error_exit; 1450f4f5df23SVikas Chaudhary } 1451f4f5df23SVikas Chaudhary 1452f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1453f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1454f4f5df23SVikas Chaudhary __func__, revision_id)); 1455f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1456f4f5df23SVikas Chaudhary 1457f4f5df23SVikas Chaudhary /* remap phys address */ 1458f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1459f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1460f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1461f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1462f4f5df23SVikas Chaudhary 1463f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1464f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1465f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1466f4f5df23SVikas Chaudhary printk(KERN_ERR 1467f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1468f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1469f4f5df23SVikas Chaudhary goto iospace_error_exit; 1470f4f5df23SVikas Chaudhary } 1471f4f5df23SVikas Chaudhary 1472f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1473f4f5df23SVikas Chaudhary 1474f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1475f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1476f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1477f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1478f4f5df23SVikas Chaudhary 1479f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1480f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1481f4f5df23SVikas Chaudhary 14822657c800SShyam Sundar ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : 14832657c800SShyam Sundar QLA82XX_CAM_RAM_DB2); 1484f4f5df23SVikas Chaudhary 14852657c800SShyam Sundar return 0; 1486f4f5df23SVikas Chaudhary iospace_error_exit: 1487f4f5df23SVikas Chaudhary return -ENOMEM; 1488afaf5a2dSDavid Somayajulu } 1489afaf5a2dSDavid Somayajulu 1490afaf5a2dSDavid Somayajulu /*** 1491afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1492afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1493afaf5a2dSDavid Somayajulu * 1494afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1495afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1496afaf5a2dSDavid Somayajulu **/ 1497f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1498afaf5a2dSDavid Somayajulu { 1499afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1500afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1501afaf5a2dSDavid Somayajulu 1502afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1503afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1504afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1505afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1506afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1507c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1508afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1509afaf5a2dSDavid Somayajulu pio = 0; 1510afaf5a2dSDavid Somayajulu } 1511afaf5a2dSDavid Somayajulu } else { 1512c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1513afaf5a2dSDavid Somayajulu pio = 0; 1514afaf5a2dSDavid Somayajulu } 1515afaf5a2dSDavid Somayajulu 1516afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1517afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1518afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1519afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1520afaf5a2dSDavid Somayajulu 1521afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1522c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1523afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1524afaf5a2dSDavid Somayajulu 1525afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1526afaf5a2dSDavid Somayajulu } 1527c2660df3SVikas Chaudhary 1528afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1529c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1530afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1531afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1532afaf5a2dSDavid Somayajulu } 1533afaf5a2dSDavid Somayajulu 1534afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1535c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1536afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1537afaf5a2dSDavid Somayajulu 1538afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1539afaf5a2dSDavid Somayajulu } 1540afaf5a2dSDavid Somayajulu 1541afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1542afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1543afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1544afaf5a2dSDavid Somayajulu if (!ha->reg) { 1545c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1546afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1547afaf5a2dSDavid Somayajulu 1548afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1549afaf5a2dSDavid Somayajulu } 1550afaf5a2dSDavid Somayajulu 1551afaf5a2dSDavid Somayajulu return 0; 1552afaf5a2dSDavid Somayajulu 1553afaf5a2dSDavid Somayajulu iospace_error_exit: 1554afaf5a2dSDavid Somayajulu return -ENOMEM; 1555afaf5a2dSDavid Somayajulu } 1556afaf5a2dSDavid Somayajulu 1557f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1558f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1559f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1560f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1561f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1562f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1563f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1564f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1565f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1566f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1567f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1568f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1569f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1570f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1571f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1572f4f5df23SVikas Chaudhary }; 1573f4f5df23SVikas Chaudhary 1574f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1575f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1576f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1577f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1578f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1579f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1580f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1581f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1582f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1583f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1584f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1585f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1586f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1587f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1588f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1589f4f5df23SVikas Chaudhary }; 1590f4f5df23SVikas Chaudhary 1591f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1592f4f5df23SVikas Chaudhary { 1593f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1594f4f5df23SVikas Chaudhary } 1595f4f5df23SVikas Chaudhary 1596f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1597f4f5df23SVikas Chaudhary { 1598f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1599f4f5df23SVikas Chaudhary } 1600f4f5df23SVikas Chaudhary 1601f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1602f4f5df23SVikas Chaudhary { 1603f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1604f4f5df23SVikas Chaudhary } 1605f4f5df23SVikas Chaudhary 1606f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1607f4f5df23SVikas Chaudhary { 1608f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1609f4f5df23SVikas Chaudhary } 1610f4f5df23SVikas Chaudhary 1611afaf5a2dSDavid Somayajulu /** 1612afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1613afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1614afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1615afaf5a2dSDavid Somayajulu * 1616afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1617afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1618afaf5a2dSDavid Somayajulu * the driver. 1619afaf5a2dSDavid Somayajulu **/ 1620afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1621afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1622afaf5a2dSDavid Somayajulu { 1623afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1624afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1625afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1626afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1627afaf5a2dSDavid Somayajulu char buf[34]; 1628f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1629afaf5a2dSDavid Somayajulu 1630afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1631afaf5a2dSDavid Somayajulu return -1; 1632afaf5a2dSDavid Somayajulu 1633afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1634afaf5a2dSDavid Somayajulu if (host == NULL) { 1635afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1636afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1637afaf5a2dSDavid Somayajulu goto probe_disable_device; 1638afaf5a2dSDavid Somayajulu } 1639afaf5a2dSDavid Somayajulu 1640afaf5a2dSDavid Somayajulu /* Clear our data area */ 1641afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1642afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1643afaf5a2dSDavid Somayajulu 1644afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1645afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1646afaf5a2dSDavid Somayajulu ha->host = host; 1647afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1648afaf5a2dSDavid Somayajulu 16492232be0dSLalit Chandivade pci_enable_pcie_error_reporting(pdev); 16502232be0dSLalit Chandivade 1651f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1652f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1653f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1654f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1655f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1656f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1657f4f5df23SVikas Chaudhary ha->curr_window = 255; 1658f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1659f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1660f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1661f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1662f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1663f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1664f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1665f4f5df23SVikas Chaudhary } else { 1666f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1667f4f5df23SVikas Chaudhary } 1668f4f5df23SVikas Chaudhary 16692232be0dSLalit Chandivade /* Set EEH reset type to fundamental if required by hba */ 16702232be0dSLalit Chandivade if (is_qla8022(ha)) 16712232be0dSLalit Chandivade pdev->needs_freset = 1; 16722232be0dSLalit Chandivade 1673afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1674f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1675afaf5a2dSDavid Somayajulu if (ret) 1676f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1677afaf5a2dSDavid Somayajulu 1678c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1679afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1680afaf5a2dSDavid Somayajulu 1681afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1682afaf5a2dSDavid Somayajulu 1683afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1684afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1685afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1686afaf5a2dSDavid Somayajulu 1687afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1688f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1689afaf5a2dSDavid Somayajulu 1690afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1691afaf5a2dSDavid Somayajulu 1692afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1693afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1694c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1695afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1696afaf5a2dSDavid Somayajulu 1697afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1698afaf5a2dSDavid Somayajulu goto probe_failed; 1699afaf5a2dSDavid Somayajulu } 1700afaf5a2dSDavid Somayajulu 1701f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1702f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1703f4f5df23SVikas Chaudhary 1704afaf5a2dSDavid Somayajulu /* 1705afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1706afaf5a2dSDavid Somayajulu * firmware 1707afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1708afaf5a2dSDavid Somayajulu */ 1709afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1710f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1711f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1712afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1713afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1714f4f5df23SVikas Chaudhary 1715f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 1716f4f5df23SVikas Chaudhary continue; 1717f4f5df23SVikas Chaudhary 1718afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1719afaf5a2dSDavid Somayajulu } 1720f4f5df23SVikas Chaudhary 1721f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 1722c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 1723afaf5a2dSDavid Somayajulu 1724fe998527SLalit Chandivade if (is_qla8022(ha) && ql4xdontresethba) { 1725fe998527SLalit Chandivade /* Put the device in failed state. */ 1726fe998527SLalit Chandivade DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); 1727fe998527SLalit Chandivade qla4_8xxx_idc_lock(ha); 1728fe998527SLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1729fe998527SLalit Chandivade QLA82XX_DEV_FAILED); 1730fe998527SLalit Chandivade qla4_8xxx_idc_unlock(ha); 1731fe998527SLalit Chandivade } 1732afaf5a2dSDavid Somayajulu ret = -ENODEV; 1733afaf5a2dSDavid Somayajulu goto probe_failed; 1734afaf5a2dSDavid Somayajulu } 1735afaf5a2dSDavid Somayajulu 1736afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1737afaf5a2dSDavid Somayajulu host->max_channel = 0; 1738afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1739afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1740afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1741afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1742afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1743afaf5a2dSDavid Somayajulu 1744afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1745afaf5a2dSDavid Somayajulu if (ret) { 1746c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1747c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 1748afaf5a2dSDavid Somayajulu goto probe_failed; 1749afaf5a2dSDavid Somayajulu } 1750afaf5a2dSDavid Somayajulu 1751afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1752afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1753afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1754afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1755afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1756afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1757c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 1758afaf5a2dSDavid Somayajulu ret = -ENODEV; 1759afaf5a2dSDavid Somayajulu goto probe_failed; 1760afaf5a2dSDavid Somayajulu } 1761c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1762afaf5a2dSDavid Somayajulu 1763f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 1764f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 1765f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 1766f4f5df23SVikas Chaudhary * mbx_intr_enable. 1767f4f5df23SVikas Chaudhary */ 1768f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1769f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 1770afaf5a2dSDavid Somayajulu if (ret) { 1771f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 1772f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 1773afaf5a2dSDavid Somayajulu goto probe_failed; 1774afaf5a2dSDavid Somayajulu } 1775f4f5df23SVikas Chaudhary } 1776afaf5a2dSDavid Somayajulu 17772232be0dSLalit Chandivade pci_save_state(ha->pdev); 1778f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1779afaf5a2dSDavid Somayajulu 1780afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1781afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1782afaf5a2dSDavid Somayajulu 1783afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1784afaf5a2dSDavid Somayajulu 1785afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1786afaf5a2dSDavid Somayajulu 1787afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1788afaf5a2dSDavid Somayajulu if (ret) 1789afaf5a2dSDavid Somayajulu goto probe_failed; 1790afaf5a2dSDavid Somayajulu 1791afaf5a2dSDavid Somayajulu printk(KERN_INFO 1792afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1793afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1794afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1795afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1796afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1797921601b7SMike Christie scsi_scan_host(host); 1798afaf5a2dSDavid Somayajulu return 0; 1799afaf5a2dSDavid Somayajulu 1800afaf5a2dSDavid Somayajulu probe_failed: 1801afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1802f4f5df23SVikas Chaudhary 1803f4f5df23SVikas Chaudhary probe_failed_ioconfig: 18042232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1805afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1806afaf5a2dSDavid Somayajulu 1807afaf5a2dSDavid Somayajulu probe_disable_device: 1808afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1809afaf5a2dSDavid Somayajulu 1810afaf5a2dSDavid Somayajulu return ret; 1811afaf5a2dSDavid Somayajulu } 1812afaf5a2dSDavid Somayajulu 1813afaf5a2dSDavid Somayajulu /** 1814afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1815afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1816afaf5a2dSDavid Somayajulu **/ 1817afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1818afaf5a2dSDavid Somayajulu { 1819afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1820afaf5a2dSDavid Somayajulu 1821afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1822afaf5a2dSDavid Somayajulu 1823f4f5df23SVikas Chaudhary set_bit(AF_HBA_GOING_AWAY, &ha->flags); 1824bee4fe8eSDavid C Somayajulu 1825afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1826afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1827afaf5a2dSDavid Somayajulu 1828afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1829afaf5a2dSDavid Somayajulu 1830afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1831afaf5a2dSDavid Somayajulu 1832afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1833afaf5a2dSDavid Somayajulu 18342232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1835f4f5df23SVikas Chaudhary pci_disable_device(pdev); 1836afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1837afaf5a2dSDavid Somayajulu } 1838afaf5a2dSDavid Somayajulu 1839afaf5a2dSDavid Somayajulu /** 1840afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1841afaf5a2dSDavid Somayajulu * @ha: HA context 1842afaf5a2dSDavid Somayajulu * 1843afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1844afaf5a2dSDavid Somayajulu * supported addressing method. 1845afaf5a2dSDavid Somayajulu */ 184647975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1847afaf5a2dSDavid Somayajulu { 1848afaf5a2dSDavid Somayajulu int retval; 1849afaf5a2dSDavid Somayajulu 1850afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 18516a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 18526a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1853afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1854afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1855afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1856afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1857284901a9SYang Hongyang DMA_BIT_MASK(32)); 1858afaf5a2dSDavid Somayajulu } 1859afaf5a2dSDavid Somayajulu } else 1860284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1861afaf5a2dSDavid Somayajulu } 1862afaf5a2dSDavid Somayajulu 1863afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1864afaf5a2dSDavid Somayajulu { 1865afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1866afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 1867afaf5a2dSDavid Somayajulu 1868afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1869afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1870d510d965SMike Christie scsi_activate_tcq(sdev, QL4_DEF_QDEPTH); 1871afaf5a2dSDavid Somayajulu return 0; 1872afaf5a2dSDavid Somayajulu } 1873afaf5a2dSDavid Somayajulu 1874afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1875afaf5a2dSDavid Somayajulu { 1876afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1877afaf5a2dSDavid Somayajulu return 0; 1878afaf5a2dSDavid Somayajulu } 1879afaf5a2dSDavid Somayajulu 1880afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1881afaf5a2dSDavid Somayajulu { 1882afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1883afaf5a2dSDavid Somayajulu } 1884afaf5a2dSDavid Somayajulu 1885afaf5a2dSDavid Somayajulu /** 1886afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1887afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1888fd589a8fSAnand Gadiyar * @index: index into the active_array 1889afaf5a2dSDavid Somayajulu * 1890afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1891afaf5a2dSDavid Somayajulu **/ 1892f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 1893f4f5df23SVikas Chaudhary uint32_t index) 1894afaf5a2dSDavid Somayajulu { 1895afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 18965369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 1897afaf5a2dSDavid Somayajulu 18985369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 18995369887aSVikas Chaudhary if (!cmd) 1900afaf5a2dSDavid Somayajulu return srb; 1901afaf5a2dSDavid Somayajulu 19025369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 19035369887aSVikas Chaudhary if (!srb) 1904afaf5a2dSDavid Somayajulu return srb; 1905afaf5a2dSDavid Somayajulu 1906afaf5a2dSDavid Somayajulu /* update counters */ 1907afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1908afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1909afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1910afaf5a2dSDavid Somayajulu if (srb->cmd) 19115369887aSVikas Chaudhary srb->cmd->host_scribble = 19125369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 1913afaf5a2dSDavid Somayajulu } 1914afaf5a2dSDavid Somayajulu return srb; 1915afaf5a2dSDavid Somayajulu } 1916afaf5a2dSDavid Somayajulu 1917afaf5a2dSDavid Somayajulu /** 1918afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 191909a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 1920afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1921afaf5a2dSDavid Somayajulu * 1922afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1923afaf5a2dSDavid Somayajulu * for some max time. 1924afaf5a2dSDavid Somayajulu **/ 1925afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1926afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1927afaf5a2dSDavid Somayajulu { 1928afaf5a2dSDavid Somayajulu int done = 0; 1929afaf5a2dSDavid Somayajulu struct srb *rp; 1930afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 19312232be0dSLalit Chandivade int ret = SUCCESS; 19322232be0dSLalit Chandivade 19332232be0dSLalit Chandivade /* Dont wait on command if PCI error is being handled 19342232be0dSLalit Chandivade * by PCI AER driver 19352232be0dSLalit Chandivade */ 19362232be0dSLalit Chandivade if (unlikely(pci_channel_offline(ha->pdev)) || 19372232be0dSLalit Chandivade (test_bit(AF_EEH_BUSY, &ha->flags))) { 19382232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", 19392232be0dSLalit Chandivade ha->host_no, __func__); 19402232be0dSLalit Chandivade return ret; 19412232be0dSLalit Chandivade } 1942afaf5a2dSDavid Somayajulu 1943afaf5a2dSDavid Somayajulu do { 1944afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 19455369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 1946afaf5a2dSDavid Somayajulu if (rp == NULL) { 1947afaf5a2dSDavid Somayajulu done++; 1948afaf5a2dSDavid Somayajulu break; 1949afaf5a2dSDavid Somayajulu } 1950afaf5a2dSDavid Somayajulu 1951afaf5a2dSDavid Somayajulu msleep(2000); 1952afaf5a2dSDavid Somayajulu } while (max_wait_time--); 1953afaf5a2dSDavid Somayajulu 1954afaf5a2dSDavid Somayajulu return done; 1955afaf5a2dSDavid Somayajulu } 1956afaf5a2dSDavid Somayajulu 1957afaf5a2dSDavid Somayajulu /** 1958afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 1959afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 1960afaf5a2dSDavid Somayajulu **/ 1961afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 1962afaf5a2dSDavid Somayajulu { 1963afaf5a2dSDavid Somayajulu unsigned long wait_online; 1964afaf5a2dSDavid Somayajulu 1965f581a3f7SVikas Chaudhary wait_online = jiffies + (HBA_ONLINE_TOV * HZ); 1966afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 1967afaf5a2dSDavid Somayajulu 1968afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 1969afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 1970afaf5a2dSDavid Somayajulu 1971afaf5a2dSDavid Somayajulu msleep(2000); 1972afaf5a2dSDavid Somayajulu } 1973afaf5a2dSDavid Somayajulu 1974afaf5a2dSDavid Somayajulu return QLA_ERROR; 1975afaf5a2dSDavid Somayajulu } 1976afaf5a2dSDavid Somayajulu 1977afaf5a2dSDavid Somayajulu /** 1978ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 1979fd589a8fSAnand Gadiyar * @ha: pointer to HBA 1980afaf5a2dSDavid Somayajulu * @t: target id 1981afaf5a2dSDavid Somayajulu * @l: lun id 1982afaf5a2dSDavid Somayajulu * 1983afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 1984afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 1985afaf5a2dSDavid Somayajulu **/ 1986ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 1987ce545039SMike Christie struct scsi_target *stgt, 1988ce545039SMike Christie struct scsi_device *sdev) 1989afaf5a2dSDavid Somayajulu { 1990afaf5a2dSDavid Somayajulu int cnt; 1991afaf5a2dSDavid Somayajulu int status = 0; 1992afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1993afaf5a2dSDavid Somayajulu 1994afaf5a2dSDavid Somayajulu /* 1995ce545039SMike Christie * Waiting for all commands for the designated target or dev 1996ce545039SMike Christie * in the active array 1997afaf5a2dSDavid Somayajulu */ 1998afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 1999afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 2000ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 2001ce545039SMike Christie (!sdev || sdev == cmd->device)) { 2002afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 2003afaf5a2dSDavid Somayajulu status++; 2004afaf5a2dSDavid Somayajulu break; 2005afaf5a2dSDavid Somayajulu } 2006afaf5a2dSDavid Somayajulu } 2007afaf5a2dSDavid Somayajulu } 2008afaf5a2dSDavid Somayajulu return status; 2009afaf5a2dSDavid Somayajulu } 2010afaf5a2dSDavid Somayajulu 2011afaf5a2dSDavid Somayajulu /** 201209a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 201309a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 201409a0f719SVikas Chaudhary * 201509a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 201609a0f719SVikas Chaudhary * command. 201709a0f719SVikas Chaudhary **/ 201809a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 201909a0f719SVikas Chaudhary { 202009a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 202109a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 202209a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 202309a0f719SVikas Chaudhary unsigned long serial = cmd->serial_number; 202492b3e5bbSMike Christie unsigned long flags; 202509a0f719SVikas Chaudhary struct srb *srb = NULL; 202609a0f719SVikas Chaudhary int ret = SUCCESS; 202709a0f719SVikas Chaudhary int wait = 0; 202809a0f719SVikas Chaudhary 2029c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 203009a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", 203109a0f719SVikas Chaudhary ha->host_no, id, lun, cmd, serial); 203209a0f719SVikas Chaudhary 203392b3e5bbSMike Christie spin_lock_irqsave(&ha->hardware_lock, flags); 203409a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 203592b3e5bbSMike Christie if (!srb) { 203692b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 203709a0f719SVikas Chaudhary return SUCCESS; 203892b3e5bbSMike Christie } 203909a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 204092b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 204109a0f719SVikas Chaudhary 204209a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 204309a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 204409a0f719SVikas Chaudhary ha->host_no, id, lun)); 204509a0f719SVikas Chaudhary ret = FAILED; 204609a0f719SVikas Chaudhary } else { 204709a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 204809a0f719SVikas Chaudhary ha->host_no, id, lun)); 204909a0f719SVikas Chaudhary wait = 1; 205009a0f719SVikas Chaudhary } 205109a0f719SVikas Chaudhary 205209a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 205309a0f719SVikas Chaudhary 205409a0f719SVikas Chaudhary /* Wait for command to complete */ 205509a0f719SVikas Chaudhary if (wait) { 205609a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 205709a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 205809a0f719SVikas Chaudhary ha->host_no, id, lun)); 205909a0f719SVikas Chaudhary ret = FAILED; 206009a0f719SVikas Chaudhary } 206109a0f719SVikas Chaudhary } 206209a0f719SVikas Chaudhary 2063c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 206409a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 206509a0f719SVikas Chaudhary ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); 206609a0f719SVikas Chaudhary 206709a0f719SVikas Chaudhary return ret; 206809a0f719SVikas Chaudhary } 206909a0f719SVikas Chaudhary 207009a0f719SVikas Chaudhary /** 2071afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2072afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2073afaf5a2dSDavid Somayajulu * 2074afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2075afaf5a2dSDavid Somayajulu * specified target. 2076afaf5a2dSDavid Somayajulu **/ 2077afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2078afaf5a2dSDavid Somayajulu { 2079afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2080afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2081afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2082afaf5a2dSDavid Somayajulu 2083612f7348SKaren Higgins if (!ddb_entry) 2084afaf5a2dSDavid Somayajulu return ret; 2085afaf5a2dSDavid Somayajulu 2086c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2087c01be6dcSMike Christie if (ret) 2088c01be6dcSMike Christie return ret; 2089c01be6dcSMike Christie ret = FAILED; 2090c01be6dcSMike Christie 2091c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2092afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2093afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2094afaf5a2dSDavid Somayajulu 2095afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2096afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2097afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2098242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2099afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2100afaf5a2dSDavid Somayajulu 2101afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2102afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2103afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2104c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2105afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2106afaf5a2dSDavid Somayajulu } 2107afaf5a2dSDavid Somayajulu 2108ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2109ce545039SMike Christie cmd->device)) { 2110c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2111afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2112afaf5a2dSDavid Somayajulu "commands.\n"); 2113afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2114afaf5a2dSDavid Somayajulu } 2115afaf5a2dSDavid Somayajulu 21169d562913SDavid C Somayajulu /* Send marker. */ 21179d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21189d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 21199d562913SDavid C Somayajulu goto eh_dev_reset_done; 21209d562913SDavid C Somayajulu 2121c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2122afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2123afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2124afaf5a2dSDavid Somayajulu cmd->device->lun); 2125afaf5a2dSDavid Somayajulu 2126afaf5a2dSDavid Somayajulu ret = SUCCESS; 2127afaf5a2dSDavid Somayajulu 2128afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2129afaf5a2dSDavid Somayajulu 2130afaf5a2dSDavid Somayajulu return ret; 2131afaf5a2dSDavid Somayajulu } 2132afaf5a2dSDavid Somayajulu 2133afaf5a2dSDavid Somayajulu /** 2134ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2135ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2136ce545039SMike Christie * 2137ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2138ce545039SMike Christie **/ 2139ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2140ce545039SMike Christie { 2141ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2142ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2143c01be6dcSMike Christie int stat, ret; 2144ce545039SMike Christie 2145ce545039SMike Christie if (!ddb_entry) 2146ce545039SMike Christie return FAILED; 2147ce545039SMike Christie 2148c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2149c01be6dcSMike Christie if (ret) 2150c01be6dcSMike Christie return ret; 2151c01be6dcSMike Christie 2152ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2153ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2154ce545039SMike Christie 2155ce545039SMike Christie DEBUG2(printk(KERN_INFO 2156ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2157ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2158242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2159ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2160ce545039SMike Christie 2161ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2162ce545039SMike Christie if (stat != QLA_SUCCESS) { 2163ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2164ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2165ce545039SMike Christie return FAILED; 2166ce545039SMike Christie } 2167ce545039SMike Christie 2168ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2169ce545039SMike Christie NULL)) { 2170ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2171ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2172ce545039SMike Christie "waiting for commands.\n"); 2173ce545039SMike Christie return FAILED; 2174ce545039SMike Christie } 2175ce545039SMike Christie 21769d562913SDavid C Somayajulu /* Send marker. */ 21779d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21789d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 21799d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 21809d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 21819d562913SDavid C Somayajulu "marker iocb failed.\n"); 21829d562913SDavid C Somayajulu return FAILED; 21839d562913SDavid C Somayajulu } 21849d562913SDavid C Somayajulu 2185ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2186ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2187ce545039SMike Christie return SUCCESS; 2188ce545039SMike Christie } 2189ce545039SMike Christie 2190ce545039SMike Christie /** 2191afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2192afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2193afaf5a2dSDavid Somayajulu * 2194afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2195afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2196afaf5a2dSDavid Somayajulu **/ 2197afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2198afaf5a2dSDavid Somayajulu { 2199afaf5a2dSDavid Somayajulu int return_status = FAILED; 2200afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2201afaf5a2dSDavid Somayajulu 2202afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2203afaf5a2dSDavid Somayajulu 2204f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2205f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2206f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2207f4f5df23SVikas Chaudhary return FAILED; 2208f4f5df23SVikas Chaudhary } 2209f4f5df23SVikas Chaudhary 2210c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2211dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2212afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2213afaf5a2dSDavid Somayajulu 2214afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2215afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2216afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2217afaf5a2dSDavid Somayajulu __func__)); 2218afaf5a2dSDavid Somayajulu 2219afaf5a2dSDavid Somayajulu return FAILED; 2220afaf5a2dSDavid Somayajulu } 2221afaf5a2dSDavid Somayajulu 2222f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2223f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2224f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2225f4f5df23SVikas Chaudhary else 2226f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2227f4f5df23SVikas Chaudhary } 222850a29aecSMike Christie 2229f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2230afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2231afaf5a2dSDavid Somayajulu 2232c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 2233afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 2234afaf5a2dSDavid Somayajulu 2235afaf5a2dSDavid Somayajulu return return_status; 2236afaf5a2dSDavid Somayajulu } 2237afaf5a2dSDavid Somayajulu 22382232be0dSLalit Chandivade /* PCI AER driver recovers from all correctable errors w/o 22392232be0dSLalit Chandivade * driver intervention. For uncorrectable errors PCI AER 22402232be0dSLalit Chandivade * driver calls the following device driver's callbacks 22412232be0dSLalit Chandivade * 22422232be0dSLalit Chandivade * - Fatal Errors - link_reset 22432232be0dSLalit Chandivade * - Non-Fatal Errors - driver's pci_error_detected() which 22442232be0dSLalit Chandivade * returns CAN_RECOVER, NEED_RESET or DISCONNECT. 22452232be0dSLalit Chandivade * 22462232be0dSLalit Chandivade * PCI AER driver calls 22472232be0dSLalit Chandivade * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled 22482232be0dSLalit Chandivade * returns RECOVERED or NEED_RESET if fw_hung 22492232be0dSLalit Chandivade * NEED_RESET - driver's slot_reset() 22502232be0dSLalit Chandivade * DISCONNECT - device is dead & cannot recover 22512232be0dSLalit Chandivade * RECOVERED - driver's pci_resume() 22522232be0dSLalit Chandivade */ 22532232be0dSLalit Chandivade static pci_ers_result_t 22542232be0dSLalit Chandivade qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 22552232be0dSLalit Chandivade { 22562232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 22572232be0dSLalit Chandivade 22582232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", 22592232be0dSLalit Chandivade ha->host_no, __func__, state); 22602232be0dSLalit Chandivade 22612232be0dSLalit Chandivade if (!is_aer_supported(ha)) 22622232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 22632232be0dSLalit Chandivade 22642232be0dSLalit Chandivade switch (state) { 22652232be0dSLalit Chandivade case pci_channel_io_normal: 22662232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 22672232be0dSLalit Chandivade return PCI_ERS_RESULT_CAN_RECOVER; 22682232be0dSLalit Chandivade case pci_channel_io_frozen: 22692232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 22702232be0dSLalit Chandivade qla4xxx_mailbox_premature_completion(ha); 22712232be0dSLalit Chandivade qla4xxx_free_irqs(ha); 22722232be0dSLalit Chandivade pci_disable_device(pdev); 22737b3595dfSVikas Chaudhary /* Return back all IOs */ 22747b3595dfSVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 22752232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 22762232be0dSLalit Chandivade case pci_channel_io_perm_failure: 22772232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 22782232be0dSLalit Chandivade set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); 22792232be0dSLalit Chandivade qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 22802232be0dSLalit Chandivade return PCI_ERS_RESULT_DISCONNECT; 22812232be0dSLalit Chandivade } 22822232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 22832232be0dSLalit Chandivade } 22842232be0dSLalit Chandivade 22852232be0dSLalit Chandivade /** 22862232be0dSLalit Chandivade * qla4xxx_pci_mmio_enabled() gets called if 22872232be0dSLalit Chandivade * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER 22882232be0dSLalit Chandivade * and read/write to the device still works. 22892232be0dSLalit Chandivade **/ 22902232be0dSLalit Chandivade static pci_ers_result_t 22912232be0dSLalit Chandivade qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) 22922232be0dSLalit Chandivade { 22932232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 22942232be0dSLalit Chandivade 22952232be0dSLalit Chandivade if (!is_aer_supported(ha)) 22962232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 22972232be0dSLalit Chandivade 22982232be0dSLalit Chandivade return PCI_ERS_RESULT_RECOVERED; 22992232be0dSLalit Chandivade } 23002232be0dSLalit Chandivade 23017b3595dfSVikas Chaudhary static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) 23022232be0dSLalit Chandivade { 23032232be0dSLalit Chandivade uint32_t rval = QLA_ERROR; 23047b3595dfSVikas Chaudhary uint32_t ret = 0; 23052232be0dSLalit Chandivade int fn; 23062232be0dSLalit Chandivade struct pci_dev *other_pdev = NULL; 23072232be0dSLalit Chandivade 23082232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); 23092232be0dSLalit Chandivade 23102232be0dSLalit Chandivade set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 23112232be0dSLalit Chandivade 23122232be0dSLalit Chandivade if (test_bit(AF_ONLINE, &ha->flags)) { 23132232be0dSLalit Chandivade clear_bit(AF_ONLINE, &ha->flags); 23142232be0dSLalit Chandivade qla4xxx_mark_all_devices_missing(ha); 23152232be0dSLalit Chandivade qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 23162232be0dSLalit Chandivade } 23172232be0dSLalit Chandivade 23182232be0dSLalit Chandivade fn = PCI_FUNC(ha->pdev->devfn); 23192232be0dSLalit Chandivade while (fn > 0) { 23202232be0dSLalit Chandivade fn--; 23212232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " 23222232be0dSLalit Chandivade "func %x\n", ha->host_no, __func__, fn); 23232232be0dSLalit Chandivade /* Get the pci device given the domain, bus, 23242232be0dSLalit Chandivade * slot/function number */ 23252232be0dSLalit Chandivade other_pdev = 23262232be0dSLalit Chandivade pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 23272232be0dSLalit Chandivade ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 23282232be0dSLalit Chandivade fn)); 23292232be0dSLalit Chandivade 23302232be0dSLalit Chandivade if (!other_pdev) 23312232be0dSLalit Chandivade continue; 23322232be0dSLalit Chandivade 23332232be0dSLalit Chandivade if (atomic_read(&other_pdev->enable_cnt)) { 23342232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " 23352232be0dSLalit Chandivade "func in enabled state%x\n", ha->host_no, 23362232be0dSLalit Chandivade __func__, fn); 23372232be0dSLalit Chandivade pci_dev_put(other_pdev); 23382232be0dSLalit Chandivade break; 23392232be0dSLalit Chandivade } 23402232be0dSLalit Chandivade pci_dev_put(other_pdev); 23412232be0dSLalit Chandivade } 23422232be0dSLalit Chandivade 23432232be0dSLalit Chandivade /* The first function on the card, the reset owner will 23442232be0dSLalit Chandivade * start & initialize the firmware. The other functions 23452232be0dSLalit Chandivade * on the card will reset the firmware context 23462232be0dSLalit Chandivade */ 23472232be0dSLalit Chandivade if (!fn) { 23482232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " 23492232be0dSLalit Chandivade "0x%x is the owner\n", ha->host_no, __func__, 23502232be0dSLalit Chandivade ha->pdev->devfn); 23512232be0dSLalit Chandivade 23522232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 23532232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 23542232be0dSLalit Chandivade QLA82XX_DEV_COLD); 23552232be0dSLalit Chandivade 23562232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, 23572232be0dSLalit Chandivade QLA82XX_IDC_VERSION); 23582232be0dSLalit Chandivade 23592232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 23602232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 23612232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 23622232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 23632232be0dSLalit Chandivade 23642232be0dSLalit Chandivade if (rval != QLA_SUCCESS) { 23652232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 23662232be0dSLalit Chandivade "FAILED\n", ha->host_no, __func__); 23672232be0dSLalit Chandivade qla4_8xxx_clear_drv_active(ha); 23682232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 23692232be0dSLalit Chandivade QLA82XX_DEV_FAILED); 23702232be0dSLalit Chandivade } else { 23712232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 23722232be0dSLalit Chandivade "READY\n", ha->host_no, __func__); 23732232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 23742232be0dSLalit Chandivade QLA82XX_DEV_READY); 23752232be0dSLalit Chandivade /* Clear driver state register */ 23762232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); 23772232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 23787b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 23797b3595dfSVikas Chaudhary if (ret) { 23807b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to " 23817b3595dfSVikas Chaudhary "reserve interrupt %d already in use.\n", 23827b3595dfSVikas Chaudhary ha->pdev->irq); 23837b3595dfSVikas Chaudhary rval = QLA_ERROR; 23847b3595dfSVikas Chaudhary } else { 23852232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 23867b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 23877b3595dfSVikas Chaudhary } 23882232be0dSLalit Chandivade } 23892232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 23902232be0dSLalit Chandivade } else { 23912232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " 23922232be0dSLalit Chandivade "the reset owner\n", ha->host_no, __func__, 23932232be0dSLalit Chandivade ha->pdev->devfn); 23942232be0dSLalit Chandivade if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == 23952232be0dSLalit Chandivade QLA82XX_DEV_READY)) { 23962232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 23972232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, 23982232be0dSLalit Chandivade PRESERVE_DDB_LIST); 23997b3595dfSVikas Chaudhary if (rval == QLA_SUCCESS) { 24007b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24017b3595dfSVikas Chaudhary if (ret) { 24027b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to" 24037b3595dfSVikas Chaudhary " reserve interrupt %d already in" 24047b3595dfSVikas Chaudhary " use.\n", ha->pdev->irq); 24057b3595dfSVikas Chaudhary rval = QLA_ERROR; 24067b3595dfSVikas Chaudhary } else { 24072232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24087b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24097b3595dfSVikas Chaudhary } 24107b3595dfSVikas Chaudhary } 24112232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24122232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24132232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24142232be0dSLalit Chandivade } 24152232be0dSLalit Chandivade } 24162232be0dSLalit Chandivade clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 24172232be0dSLalit Chandivade return rval; 24182232be0dSLalit Chandivade } 24192232be0dSLalit Chandivade 24202232be0dSLalit Chandivade static pci_ers_result_t 24212232be0dSLalit Chandivade qla4xxx_pci_slot_reset(struct pci_dev *pdev) 24222232be0dSLalit Chandivade { 24232232be0dSLalit Chandivade pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; 24242232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 24252232be0dSLalit Chandivade int rc; 24262232be0dSLalit Chandivade 24272232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", 24282232be0dSLalit Chandivade ha->host_no, __func__); 24292232be0dSLalit Chandivade 24302232be0dSLalit Chandivade if (!is_aer_supported(ha)) 24312232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 24322232be0dSLalit Chandivade 24332232be0dSLalit Chandivade /* Restore the saved state of PCIe device - 24342232be0dSLalit Chandivade * BAR registers, PCI Config space, PCIX, MSI, 24352232be0dSLalit Chandivade * IOV states 24362232be0dSLalit Chandivade */ 24372232be0dSLalit Chandivade pci_restore_state(pdev); 24382232be0dSLalit Chandivade 24392232be0dSLalit Chandivade /* pci_restore_state() clears the saved_state flag of the device 24402232be0dSLalit Chandivade * save restored state which resets saved_state flag 24412232be0dSLalit Chandivade */ 24422232be0dSLalit Chandivade pci_save_state(pdev); 24432232be0dSLalit Chandivade 24442232be0dSLalit Chandivade /* Initialize device or resume if in suspended state */ 24452232be0dSLalit Chandivade rc = pci_enable_device(pdev); 24462232be0dSLalit Chandivade if (rc) { 24472232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable " 24482232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__); 24492232be0dSLalit Chandivade goto exit_slot_reset; 24502232be0dSLalit Chandivade } 24512232be0dSLalit Chandivade 24527b3595dfSVikas Chaudhary ha->isp_ops->disable_intrs(ha); 24532232be0dSLalit Chandivade 24542232be0dSLalit Chandivade if (is_qla8022(ha)) { 24552232be0dSLalit Chandivade if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { 24562232be0dSLalit Chandivade ret = PCI_ERS_RESULT_RECOVERED; 24572232be0dSLalit Chandivade goto exit_slot_reset; 24582232be0dSLalit Chandivade } else 24592232be0dSLalit Chandivade goto exit_slot_reset; 24602232be0dSLalit Chandivade } 24612232be0dSLalit Chandivade 24622232be0dSLalit Chandivade exit_slot_reset: 24632232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" 24642232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__, ret); 24652232be0dSLalit Chandivade return ret; 24662232be0dSLalit Chandivade } 24672232be0dSLalit Chandivade 24682232be0dSLalit Chandivade static void 24692232be0dSLalit Chandivade qla4xxx_pci_resume(struct pci_dev *pdev) 24702232be0dSLalit Chandivade { 24712232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 24722232be0dSLalit Chandivade int ret; 24732232be0dSLalit Chandivade 24742232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", 24752232be0dSLalit Chandivade ha->host_no, __func__); 24762232be0dSLalit Chandivade 24772232be0dSLalit Chandivade ret = qla4xxx_wait_for_hba_online(ha); 24782232be0dSLalit Chandivade if (ret != QLA_SUCCESS) { 24792232be0dSLalit Chandivade ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " 24802232be0dSLalit Chandivade "resume I/O from slot/link_reset\n", ha->host_no, 24812232be0dSLalit Chandivade __func__); 24822232be0dSLalit Chandivade } 24832232be0dSLalit Chandivade 24842232be0dSLalit Chandivade pci_cleanup_aer_uncorrect_error_status(pdev); 24852232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 24862232be0dSLalit Chandivade } 24872232be0dSLalit Chandivade 24882232be0dSLalit Chandivade static struct pci_error_handlers qla4xxx_err_handler = { 24892232be0dSLalit Chandivade .error_detected = qla4xxx_pci_error_detected, 24902232be0dSLalit Chandivade .mmio_enabled = qla4xxx_pci_mmio_enabled, 24912232be0dSLalit Chandivade .slot_reset = qla4xxx_pci_slot_reset, 24922232be0dSLalit Chandivade .resume = qla4xxx_pci_resume, 24932232be0dSLalit Chandivade }; 24942232be0dSLalit Chandivade 2495afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2496afaf5a2dSDavid Somayajulu { 2497afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2498afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2499afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2500afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2501afaf5a2dSDavid Somayajulu }, 2502afaf5a2dSDavid Somayajulu { 2503afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2504afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2505afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2506afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2507afaf5a2dSDavid Somayajulu }, 2508d915058fSDavid C Somayajulu { 2509d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2510d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2511d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2512d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2513d915058fSDavid C Somayajulu }, 2514f4f5df23SVikas Chaudhary { 2515f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2516f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2517f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2518f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2519f4f5df23SVikas Chaudhary }, 2520afaf5a2dSDavid Somayajulu {0, 0}, 2521afaf5a2dSDavid Somayajulu }; 2522afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2523afaf5a2dSDavid Somayajulu 252447975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2525afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2526afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2527afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2528afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 25292232be0dSLalit Chandivade .err_handler = &qla4xxx_err_handler, 2530afaf5a2dSDavid Somayajulu }; 2531afaf5a2dSDavid Somayajulu 2532afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2533afaf5a2dSDavid Somayajulu { 2534afaf5a2dSDavid Somayajulu int ret; 2535afaf5a2dSDavid Somayajulu 2536afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2537afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 253820c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2539afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2540afaf5a2dSDavid Somayajulu printk(KERN_ERR 2541afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2542afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2543afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2544afaf5a2dSDavid Somayajulu goto no_srp_cache; 2545afaf5a2dSDavid Somayajulu } 2546afaf5a2dSDavid Somayajulu 2547afaf5a2dSDavid Somayajulu /* Derive version string. */ 2548afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 254911010fecSAndrew Vasquez if (ql4xextended_error_logging) 2550afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2551afaf5a2dSDavid Somayajulu 2552afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2553afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2554afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2555afaf5a2dSDavid Somayajulu ret = -ENODEV; 2556afaf5a2dSDavid Somayajulu goto release_srb_cache; 2557afaf5a2dSDavid Somayajulu } 2558afaf5a2dSDavid Somayajulu 2559afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2560afaf5a2dSDavid Somayajulu if (ret) 2561afaf5a2dSDavid Somayajulu goto unregister_transport; 2562afaf5a2dSDavid Somayajulu 2563afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2564afaf5a2dSDavid Somayajulu return 0; 25655ae16db3SDoug Maxey 2566afaf5a2dSDavid Somayajulu unregister_transport: 2567afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2568afaf5a2dSDavid Somayajulu release_srb_cache: 2569afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2570afaf5a2dSDavid Somayajulu no_srp_cache: 2571afaf5a2dSDavid Somayajulu return ret; 2572afaf5a2dSDavid Somayajulu } 2573afaf5a2dSDavid Somayajulu 2574afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2575afaf5a2dSDavid Somayajulu { 2576afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2577afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2578afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2579afaf5a2dSDavid Somayajulu } 2580afaf5a2dSDavid Somayajulu 2581afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2582afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2583afaf5a2dSDavid Somayajulu 2584afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2585afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2586afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2587afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2588