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 */ 82afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 83afaf5a2dSDavid Somayajulu void (*done) (struct scsi_cmnd *)); 8409a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 85afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 86ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 87afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 88afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 89afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 90afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 91024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 92afaf5a2dSDavid Somayajulu 93f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 94f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 95f4f5df23SVikas Chaudhary 96afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 97afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 98afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 99afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 100afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 101afaf5a2dSDavid Somayajulu 10209a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 103afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 104ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 105afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1065c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 107afaf5a2dSDavid Somayajulu 108afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 109afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 110afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 111afaf5a2dSDavid Somayajulu 112921601b7SMike Christie .scan_finished = iscsi_scan_finished, 113024f801fSMike Christie .scan_start = qla4xxx_scan_start, 114921601b7SMike Christie 115afaf5a2dSDavid Somayajulu .this_id = -1, 116afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 117afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 118afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 119afaf5a2dSDavid Somayajulu 120afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 121afaf5a2dSDavid Somayajulu }; 122afaf5a2dSDavid Somayajulu 123afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 124afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 125afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 126d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 127d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 128aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 129aa1e93a2SMike Christie ISCSI_TARGET_NAME | ISCSI_TPGT, 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 165f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] port down retry count " 166568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 167568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 168568d303bSMike Christie ha->port_down_retry_count)); 169568d303bSMike Christie 170f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 171afaf5a2dSDavid Somayajulu } 172568d303bSMike Christie } 173afaf5a2dSDavid Somayajulu 174aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 175aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 176aa1e93a2SMike Christie { 177aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 178aa1e93a2SMike Christie int len; 179aa1e93a2SMike Christie 180aa1e93a2SMike Christie switch (param) { 181aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1827ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 183aa1e93a2SMike Christie break; 18422236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 18522236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 18622236961SMike Christie ha->ip_address[1], ha->ip_address[2], 18722236961SMike Christie ha->ip_address[3]); 18822236961SMike Christie break; 1898ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 19022236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1918ad5781aSMike Christie break; 192aa1e93a2SMike Christie default: 193aa1e93a2SMike Christie return -ENOSYS; 194aa1e93a2SMike Christie } 195aa1e93a2SMike Christie 196aa1e93a2SMike Christie return len; 197aa1e93a2SMike Christie } 198aa1e93a2SMike Christie 199afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 200afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 201afaf5a2dSDavid Somayajulu { 202afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 203afaf5a2dSDavid Somayajulu int len; 204afaf5a2dSDavid Somayajulu 205afaf5a2dSDavid Somayajulu switch (param) { 206afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 207afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 208afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 209afaf5a2dSDavid Somayajulu break; 210afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 211afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 212afaf5a2dSDavid Somayajulu break; 213afaf5a2dSDavid Somayajulu default: 214afaf5a2dSDavid Somayajulu return -ENOSYS; 215afaf5a2dSDavid Somayajulu } 216afaf5a2dSDavid Somayajulu 217afaf5a2dSDavid Somayajulu return len; 218afaf5a2dSDavid Somayajulu } 219afaf5a2dSDavid Somayajulu 220afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 221afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 222afaf5a2dSDavid Somayajulu { 223afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 224afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 225afaf5a2dSDavid Somayajulu int len; 226afaf5a2dSDavid Somayajulu 227afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 228afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 229afaf5a2dSDavid Somayajulu 230afaf5a2dSDavid Somayajulu switch (param) { 231afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 232afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 233afaf5a2dSDavid Somayajulu break; 234afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 235afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 23663779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 237afaf5a2dSDavid Somayajulu break; 238afaf5a2dSDavid Somayajulu default: 239afaf5a2dSDavid Somayajulu return -ENOSYS; 240afaf5a2dSDavid Somayajulu } 241afaf5a2dSDavid Somayajulu 242afaf5a2dSDavid Somayajulu return len; 243afaf5a2dSDavid Somayajulu } 244afaf5a2dSDavid Somayajulu 2452174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2462174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2472174a04eSMike Christie struct sockaddr *dst_addr) 248afaf5a2dSDavid Somayajulu { 249afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 250afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 251afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 252afaf5a2dSDavid Somayajulu int ret = 0; 253afaf5a2dSDavid Somayajulu 254afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 255afaf5a2dSDavid Somayajulu 256afaf5a2dSDavid Somayajulu switch (type) { 257afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 258afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 259afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 260afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 261afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 262afaf5a2dSDavid Somayajulu ret = -EIO; 263afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 264afaf5a2dSDavid Somayajulu /* 265afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 266afaf5a2dSDavid Somayajulu */ 267afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 268afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 269afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 270afaf5a2dSDavid Somayajulu ret = -EIO; 271afaf5a2dSDavid Somayajulu } else 272afaf5a2dSDavid Somayajulu ret = -ENOSYS; 273afaf5a2dSDavid Somayajulu break; 274afaf5a2dSDavid Somayajulu default: 275afaf5a2dSDavid Somayajulu ret = -ENOSYS; 276afaf5a2dSDavid Somayajulu } 277afaf5a2dSDavid Somayajulu return ret; 278afaf5a2dSDavid Somayajulu } 279afaf5a2dSDavid Somayajulu 280afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 281afaf5a2dSDavid Somayajulu { 282afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 283afaf5a2dSDavid Somayajulu return; 284afaf5a2dSDavid Somayajulu 285afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 28626974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 287afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 288afaf5a2dSDavid Somayajulu } 289afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 290afaf5a2dSDavid Somayajulu } 291afaf5a2dSDavid Somayajulu 292afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 293afaf5a2dSDavid Somayajulu { 294afaf5a2dSDavid Somayajulu int err; 295afaf5a2dSDavid Somayajulu 29626974789SMike Christie ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; 297afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 298afaf5a2dSDavid Somayajulu if (err) { 299afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 300afaf5a2dSDavid Somayajulu return err; 301afaf5a2dSDavid Somayajulu } 302afaf5a2dSDavid Somayajulu 3035d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 304afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 305afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 306afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 307afaf5a2dSDavid Somayajulu return -ENOMEM; 308afaf5a2dSDavid Somayajulu } 309b635930dSMike Christie 310b635930dSMike Christie /* finally ready to go */ 311b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 312afaf5a2dSDavid Somayajulu return 0; 313afaf5a2dSDavid Somayajulu } 314afaf5a2dSDavid Somayajulu 315afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 316afaf5a2dSDavid Somayajulu { 317afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 318afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 319afaf5a2dSDavid Somayajulu 3205d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3215d91e209SMike Christie sizeof(struct ddb_entry)); 322afaf5a2dSDavid Somayajulu if (!sess) 323afaf5a2dSDavid Somayajulu return NULL; 324afaf5a2dSDavid Somayajulu 325afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 326afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 327afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 328afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 329afaf5a2dSDavid Somayajulu return ddb_entry; 330afaf5a2dSDavid Somayajulu } 331afaf5a2dSDavid Somayajulu 332024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 333024f801fSMike Christie { 334024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 335024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 336024f801fSMike Christie 337024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 338024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 339024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 340024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 341024f801fSMike Christie } 342024f801fSMike Christie } 343024f801fSMike Christie 344afaf5a2dSDavid Somayajulu /* 345afaf5a2dSDavid Somayajulu * Timer routines 346afaf5a2dSDavid Somayajulu */ 347afaf5a2dSDavid Somayajulu 348afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 349afaf5a2dSDavid Somayajulu unsigned long interval) 350afaf5a2dSDavid Somayajulu { 351afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 352afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 353afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 354afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 355afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 356afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 357afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 358afaf5a2dSDavid Somayajulu ha->timer_active = 1; 359afaf5a2dSDavid Somayajulu } 360afaf5a2dSDavid Somayajulu 361afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 362afaf5a2dSDavid Somayajulu { 363afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 364afaf5a2dSDavid Somayajulu ha->timer_active = 0; 365afaf5a2dSDavid Somayajulu } 366afaf5a2dSDavid Somayajulu 367afaf5a2dSDavid Somayajulu /*** 368afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 369afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 370afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 371afaf5a2dSDavid Somayajulu * 372f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 373afaf5a2dSDavid Somayajulu **/ 374afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 375afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 376afaf5a2dSDavid Somayajulu { 377f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 378afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 379f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 380f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 381f4f5df23SVikas Chaudhary } else 382f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 383f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 384f4f5df23SVikas Chaudhary 385b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 386e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 387afaf5a2dSDavid Somayajulu } 388afaf5a2dSDavid Somayajulu 389f4f5df23SVikas Chaudhary /** 390f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 391f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 392f4f5df23SVikas Chaudhary * 393f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 394f4f5df23SVikas Chaudhary **/ 395f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 396f4f5df23SVikas Chaudhary { 397f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 398f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 399f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 400f4f5df23SVikas Chaudhary } 401f4f5df23SVikas Chaudhary } 402f4f5df23SVikas Chaudhary 403afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 404afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 405afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 406afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 407afaf5a2dSDavid Somayajulu { 408afaf5a2dSDavid Somayajulu struct srb *srb; 409afaf5a2dSDavid Somayajulu 410afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 411afaf5a2dSDavid Somayajulu if (!srb) 412afaf5a2dSDavid Somayajulu return srb; 413afaf5a2dSDavid Somayajulu 41409a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 415afaf5a2dSDavid Somayajulu srb->ha = ha; 416afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 417afaf5a2dSDavid Somayajulu srb->cmd = cmd; 418afaf5a2dSDavid Somayajulu srb->flags = 0; 4195369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 420afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 421afaf5a2dSDavid Somayajulu 422afaf5a2dSDavid Somayajulu return srb; 423afaf5a2dSDavid Somayajulu } 424afaf5a2dSDavid Somayajulu 425afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 426afaf5a2dSDavid Somayajulu { 427afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 428afaf5a2dSDavid Somayajulu 429afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4305f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 431afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 432afaf5a2dSDavid Somayajulu } 4335369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 434afaf5a2dSDavid Somayajulu } 435afaf5a2dSDavid Somayajulu 43609a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 437afaf5a2dSDavid Somayajulu { 43809a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 439afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 44009a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 441afaf5a2dSDavid Somayajulu 442afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 443afaf5a2dSDavid Somayajulu 444afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 445afaf5a2dSDavid Somayajulu 446afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 447afaf5a2dSDavid Somayajulu } 448afaf5a2dSDavid Somayajulu 449afaf5a2dSDavid Somayajulu /** 450afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 451afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 452afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 453afaf5a2dSDavid Somayajulu * that the command has been processed. 454afaf5a2dSDavid Somayajulu * 455afaf5a2dSDavid Somayajulu * Remarks: 456afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 457afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 458afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 459afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 460afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 461afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 462afaf5a2dSDavid Somayajulu **/ 463afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 464afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 465afaf5a2dSDavid Somayajulu { 466afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 467afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4687fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 469afaf5a2dSDavid Somayajulu struct srb *srb; 470afaf5a2dSDavid Somayajulu int rval; 471afaf5a2dSDavid Somayajulu 4727fb1921bSMike Christie if (!sess) { 4737fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4747fb1921bSMike Christie goto qc_fail_command; 4757fb1921bSMike Christie } 4767fb1921bSMike Christie 4777fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4787fb1921bSMike Christie if (rval) { 4797fb1921bSMike Christie cmd->result = rval; 4807fb1921bSMike Christie goto qc_fail_command; 4817fb1921bSMike Christie } 4827fb1921bSMike Christie 483afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 484afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 485afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 486afaf5a2dSDavid Somayajulu goto qc_fail_command; 487afaf5a2dSDavid Somayajulu } 488c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 489afaf5a2dSDavid Somayajulu } 490afaf5a2dSDavid Somayajulu 491f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 492f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 493f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 494f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 495f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 496f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 497f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 498477ffb9dSDavid C Somayajulu goto qc_host_busy; 499477ffb9dSDavid C Somayajulu 500afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 501afaf5a2dSDavid Somayajulu 502afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 503afaf5a2dSDavid Somayajulu if (!srb) 504afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 505afaf5a2dSDavid Somayajulu 506afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 507afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 508afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 509afaf5a2dSDavid Somayajulu 510afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 511afaf5a2dSDavid Somayajulu return 0; 512afaf5a2dSDavid Somayajulu 513afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 514afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 515afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 516afaf5a2dSDavid Somayajulu 517afaf5a2dSDavid Somayajulu qc_host_busy_lock: 518afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 519afaf5a2dSDavid Somayajulu 520afaf5a2dSDavid Somayajulu qc_host_busy: 521afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 522afaf5a2dSDavid Somayajulu 523afaf5a2dSDavid Somayajulu qc_fail_command: 524afaf5a2dSDavid Somayajulu done(cmd); 525afaf5a2dSDavid Somayajulu 526afaf5a2dSDavid Somayajulu return 0; 527afaf5a2dSDavid Somayajulu } 528afaf5a2dSDavid Somayajulu 529afaf5a2dSDavid Somayajulu /** 530afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 531afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 532afaf5a2dSDavid Somayajulu * 533afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 534afaf5a2dSDavid Somayajulu **/ 535afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 536afaf5a2dSDavid Somayajulu { 537afaf5a2dSDavid Somayajulu if (ha->queues) 538afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 539afaf5a2dSDavid Somayajulu ha->queues_dma); 540afaf5a2dSDavid Somayajulu 541afaf5a2dSDavid Somayajulu ha->queues_len = 0; 542afaf5a2dSDavid Somayajulu ha->queues = NULL; 543afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 544afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 545afaf5a2dSDavid Somayajulu ha->request_dma = 0; 546afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 547afaf5a2dSDavid Somayajulu ha->response_dma = 0; 548afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 549afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 550afaf5a2dSDavid Somayajulu 551afaf5a2dSDavid Somayajulu /* Free srb pool. */ 552afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 553afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 554afaf5a2dSDavid Somayajulu 555afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 556afaf5a2dSDavid Somayajulu 557afaf5a2dSDavid Somayajulu /* release io space registers */ 558f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 559f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 560f4f5df23SVikas Chaudhary iounmap( 561f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 562f4f5df23SVikas Chaudhary 563f4f5df23SVikas Chaudhary if (ha->nx_db_wr_ptr) 564f4f5df23SVikas Chaudhary iounmap( 565f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_db_wr_ptr); 566f4f5df23SVikas Chaudhary } else if (ha->reg) 567afaf5a2dSDavid Somayajulu iounmap(ha->reg); 568afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 569afaf5a2dSDavid Somayajulu } 570afaf5a2dSDavid Somayajulu 571afaf5a2dSDavid Somayajulu /** 572afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 573afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 574afaf5a2dSDavid Somayajulu * 575afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 576afaf5a2dSDavid Somayajulu * for srbs. 577afaf5a2dSDavid Somayajulu **/ 578afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 579afaf5a2dSDavid Somayajulu { 580afaf5a2dSDavid Somayajulu unsigned long align; 581afaf5a2dSDavid Somayajulu 582afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 583afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 584afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 585afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 586afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 587afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 588afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 589afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 590afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 591c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 592afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 593afaf5a2dSDavid Somayajulu 594afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 595afaf5a2dSDavid Somayajulu } 596afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 597afaf5a2dSDavid Somayajulu 598afaf5a2dSDavid Somayajulu /* 599afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 600afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 601afaf5a2dSDavid Somayajulu */ 602afaf5a2dSDavid Somayajulu align = 0; 603afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 604afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 605afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 606afaf5a2dSDavid Somayajulu 607afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 608afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 609afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 610afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 611afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 612afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 613afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 614afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 615afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 616afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 617afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 618afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 619afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 620afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 621afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 622afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 623afaf5a2dSDavid Somayajulu 624afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 625afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 626afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 627afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 628c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 629afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 630afaf5a2dSDavid Somayajulu 631afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 632afaf5a2dSDavid Somayajulu } 633afaf5a2dSDavid Somayajulu 634afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 635afaf5a2dSDavid Somayajulu 636afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 637afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 638afaf5a2dSDavid Somayajulu return QLA_ERROR; 639afaf5a2dSDavid Somayajulu } 640afaf5a2dSDavid Somayajulu 641afaf5a2dSDavid Somayajulu /** 642f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 643f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 644f4f5df23SVikas Chaudhary * 645f4f5df23SVikas Chaudhary * Context: Interrupt 646f4f5df23SVikas Chaudhary **/ 647f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 648f4f5df23SVikas Chaudhary { 649f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 650f4f5df23SVikas Chaudhary 651f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 652f4f5df23SVikas Chaudhary 653f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 654f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 655f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 656f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 657f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 658f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 659f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 660f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 661f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 662f4f5df23SVikas Chaudhary * DPC */ 663f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 664f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 665f4f5df23SVikas Chaudhary else { 666f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 667f4f5df23SVikas Chaudhary ha->host_no, __func__); 668f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 669f4f5df23SVikas Chaudhary } 670f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 671f4f5df23SVikas Chaudhary } 672f4f5df23SVikas Chaudhary } 673f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 674f4f5df23SVikas Chaudhary } 675f4f5df23SVikas Chaudhary 676f4f5df23SVikas Chaudhary /** 677f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 678f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 679f4f5df23SVikas Chaudhary * 680f4f5df23SVikas Chaudhary * Context: Interrupt 681f4f5df23SVikas Chaudhary **/ 682f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 683f4f5df23SVikas Chaudhary { 684f4f5df23SVikas Chaudhary uint32_t dev_state; 685f4f5df23SVikas Chaudhary 686f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 687f4f5df23SVikas Chaudhary 688f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 689f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags)) { 690f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 691f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 692f4f5df23SVikas Chaudhary printk("scsi%ld: %s: HW State: NEED RESET!\n", 693f4f5df23SVikas Chaudhary ha->host_no, __func__); 694f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 695f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 696f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 697f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 698f4f5df23SVikas Chaudhary printk("scsi%ld: %s: HW State: NEED QUIES!\n", 699f4f5df23SVikas Chaudhary ha->host_no, __func__); 700f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 701f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 702f4f5df23SVikas Chaudhary } else { 703f4f5df23SVikas Chaudhary /* Check firmware health */ 704f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 705f4f5df23SVikas Chaudhary } 706f4f5df23SVikas Chaudhary } 707f4f5df23SVikas Chaudhary } 708f4f5df23SVikas Chaudhary 709f4f5df23SVikas Chaudhary /** 710afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 711afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 712afaf5a2dSDavid Somayajulu **/ 713afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 714afaf5a2dSDavid Somayajulu { 715afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 716afaf5a2dSDavid Somayajulu int start_dpc = 0; 717afaf5a2dSDavid Somayajulu 718f4f5df23SVikas Chaudhary if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) { 719f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n", 720f4f5df23SVikas Chaudhary __func__)); 721f4f5df23SVikas Chaudhary return; 722f4f5df23SVikas Chaudhary } 723f4f5df23SVikas Chaudhary 724f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 725f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 726f4f5df23SVikas Chaudhary } 727f4f5df23SVikas Chaudhary 728afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 729afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 730afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 731afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 732afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 733afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 734afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 735afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 736afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 737afaf5a2dSDavid Somayajulu == 0) { 738afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 739afaf5a2dSDavid Somayajulu retry_relogin_timer, 740afaf5a2dSDavid Somayajulu INVALID_ENTRY); 741afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 742afaf5a2dSDavid Somayajulu &ha->dpc_flags); 743afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 744f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 745afaf5a2dSDavid Somayajulu " login device\n", 746afaf5a2dSDavid Somayajulu ha->host_no, __func__, 747afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 748afaf5a2dSDavid Somayajulu } else 749afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 750afaf5a2dSDavid Somayajulu retry_relogin_timer); 751afaf5a2dSDavid Somayajulu } 752afaf5a2dSDavid Somayajulu } 753afaf5a2dSDavid Somayajulu 754afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 755afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 756afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 757afaf5a2dSDavid Somayajulu /* 758afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 759afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 760afaf5a2dSDavid Somayajulu */ 761afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 762afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 763afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 764afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 765afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 766afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 767f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 768afaf5a2dSDavid Somayajulu " timed out-retrying" 769afaf5a2dSDavid Somayajulu " relogin (%d)\n", 770afaf5a2dSDavid Somayajulu ha->host_no, 771afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 772afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 773afaf5a2dSDavid Somayajulu relogin_retry_count)) 774afaf5a2dSDavid Somayajulu ); 775afaf5a2dSDavid Somayajulu start_dpc++; 776f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 777afaf5a2dSDavid Somayajulu "initate relogin after" 778afaf5a2dSDavid Somayajulu " %d seconds\n", 779afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 780afaf5a2dSDavid Somayajulu ddb_entry->target, 781afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 782afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 783afaf5a2dSDavid Somayajulu ); 784afaf5a2dSDavid Somayajulu 785afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 786afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 787afaf5a2dSDavid Somayajulu } 788afaf5a2dSDavid Somayajulu } 789afaf5a2dSDavid Somayajulu } 790afaf5a2dSDavid Somayajulu 791f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 792afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 793afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 794afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 795afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 796afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 797afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 798afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 799afaf5a2dSDavid Somayajulu } 800f4f5df23SVikas Chaudhary } 801afaf5a2dSDavid Somayajulu 802afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 803afaf5a2dSDavid Somayajulu if ((start_dpc || 804afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 805afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 806afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 807f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 808afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 809afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 810065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 811f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 812f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 813afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 814f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags) && 815afaf5a2dSDavid Somayajulu ha->dpc_thread) { 816afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 817afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 818afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 819f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 820afaf5a2dSDavid Somayajulu } 821afaf5a2dSDavid Somayajulu 822afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 823afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 824afaf5a2dSDavid Somayajulu 825afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 826afaf5a2dSDavid Somayajulu } 827afaf5a2dSDavid Somayajulu 828afaf5a2dSDavid Somayajulu /** 829afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 830afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 831afaf5a2dSDavid Somayajulu * 832afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 833afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 834afaf5a2dSDavid Somayajulu **/ 835afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 836afaf5a2dSDavid Somayajulu { 837afaf5a2dSDavid Somayajulu uint32_t index = 0; 838afaf5a2dSDavid Somayajulu unsigned long flags; 839afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 840afaf5a2dSDavid Somayajulu 841f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 842f4f5df23SVikas Chaudhary 843f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 844f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 845f4f5df23SVikas Chaudhary 846f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 847afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 848afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 849afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 850afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 851afaf5a2dSDavid Somayajulu if (cmd != NULL) 852afaf5a2dSDavid Somayajulu break; 853afaf5a2dSDavid Somayajulu } 854afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 855afaf5a2dSDavid Somayajulu 856afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 857f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 858f4f5df23SVikas Chaudhary return QLA_SUCCESS; 859afaf5a2dSDavid Somayajulu 860afaf5a2dSDavid Somayajulu msleep(1000); 861afaf5a2dSDavid Somayajulu } 862f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 863f4f5df23SVikas Chaudhary * return ERROR. */ 864f4f5df23SVikas Chaudhary return QLA_ERROR; 865afaf5a2dSDavid Somayajulu } 866afaf5a2dSDavid Somayajulu 867f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 868afaf5a2dSDavid Somayajulu { 869afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 870477ffb9dSDavid C Somayajulu unsigned long flags = 0; 871477ffb9dSDavid C Somayajulu 872477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 873afaf5a2dSDavid Somayajulu 874f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 875f4f5df23SVikas Chaudhary return QLA_ERROR; 876f4f5df23SVikas Chaudhary 877afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 878afaf5a2dSDavid Somayajulu 879afaf5a2dSDavid Somayajulu /* 880afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 881afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 882afaf5a2dSDavid Somayajulu */ 883afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 884afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 885afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 886afaf5a2dSDavid Somayajulu 887afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 888afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 889afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 890afaf5a2dSDavid Somayajulu 891afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 892f4f5df23SVikas Chaudhary return QLA_SUCCESS; 893477ffb9dSDavid C Somayajulu } 894477ffb9dSDavid C Somayajulu 895477ffb9dSDavid C Somayajulu /** 896477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 897477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 898477ffb9dSDavid C Somayajulu **/ 899477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 900477ffb9dSDavid C Somayajulu { 901477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 902477ffb9dSDavid C Somayajulu unsigned long flags = 0; 903477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 904477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 905477ffb9dSDavid C Somayajulu 906477ffb9dSDavid C Somayajulu qla4xxx_hw_reset(ha); 907afaf5a2dSDavid Somayajulu 908afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 909afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 910afaf5a2dSDavid Somayajulu do { 911afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 912afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 913afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 914afaf5a2dSDavid Somayajulu 915afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 916afaf5a2dSDavid Somayajulu break; 917afaf5a2dSDavid Somayajulu 918afaf5a2dSDavid Somayajulu msleep(1000); 919afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 920afaf5a2dSDavid Somayajulu 921afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 922afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 923afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 924afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 925afaf5a2dSDavid Somayajulu ha->host_no)); 926afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 927afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 928afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 929afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 930afaf5a2dSDavid Somayajulu } 931afaf5a2dSDavid Somayajulu 932afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 933afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 934afaf5a2dSDavid Somayajulu do { 935afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 936afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 937afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 938afaf5a2dSDavid Somayajulu 939afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 940afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 941afaf5a2dSDavid Somayajulu break; 942afaf5a2dSDavid Somayajulu } 943afaf5a2dSDavid Somayajulu 944afaf5a2dSDavid Somayajulu msleep(1000); 945afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 946afaf5a2dSDavid Somayajulu 947afaf5a2dSDavid Somayajulu /* 948afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 949afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 950afaf5a2dSDavid Somayajulu */ 951afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 952afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 953afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 954afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 955afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 956afaf5a2dSDavid Somayajulu } 957afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 958afaf5a2dSDavid Somayajulu 959afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 960afaf5a2dSDavid Somayajulu * function is also enabled. 961afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 962afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 963afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 964afaf5a2dSDavid Somayajulu */ 965afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 966afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 967afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 968afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 969afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 970afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 971afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 972afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 973afaf5a2dSDavid Somayajulu do { 974afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 975afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 976afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 977afaf5a2dSDavid Somayajulu 978afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 979afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 980afaf5a2dSDavid Somayajulu break; 981afaf5a2dSDavid Somayajulu } 982afaf5a2dSDavid Somayajulu 983afaf5a2dSDavid Somayajulu msleep(1000); 984afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 985afaf5a2dSDavid Somayajulu } 986afaf5a2dSDavid Somayajulu 987afaf5a2dSDavid Somayajulu return status; 988afaf5a2dSDavid Somayajulu } 989afaf5a2dSDavid Somayajulu 990afaf5a2dSDavid Somayajulu /** 991f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 992afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 993f4f5df23SVikas Chaudhary * @res: returned scsi status 994afaf5a2dSDavid Somayajulu * 995afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 996afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 997afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 998afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 999afaf5a2dSDavid Somayajulu **/ 1000f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1001afaf5a2dSDavid Somayajulu { 1002afaf5a2dSDavid Somayajulu struct srb *srb; 1003afaf5a2dSDavid Somayajulu int i; 1004afaf5a2dSDavid Somayajulu unsigned long flags; 1005afaf5a2dSDavid Somayajulu 1006afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1007afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1008afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1009afaf5a2dSDavid Somayajulu if (srb != NULL) { 1010f4f5df23SVikas Chaudhary srb->cmd->result = res; 101109a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1012afaf5a2dSDavid Somayajulu } 1013afaf5a2dSDavid Somayajulu } 1014afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1015afaf5a2dSDavid Somayajulu } 1016afaf5a2dSDavid Somayajulu 1017f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1018f4f5df23SVikas Chaudhary { 1019f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1020f4f5df23SVikas Chaudhary 1021f4f5df23SVikas Chaudhary /* Disable the board */ 1022f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1023f4f5df23SVikas Chaudhary set_bit(AF_HBA_GOING_AWAY, &ha->flags); 1024f4f5df23SVikas Chaudhary 1025f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1026f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1027f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1028f4f5df23SVikas Chaudhary } 1029f4f5df23SVikas Chaudhary 1030afaf5a2dSDavid Somayajulu /** 1031afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1032afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1033afaf5a2dSDavid Somayajulu **/ 1034f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1035afaf5a2dSDavid Somayajulu { 1036f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1037f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1038afaf5a2dSDavid Somayajulu 1039afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1040f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1041afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 104250a29aecSMike Christie 1043f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1044afaf5a2dSDavid Somayajulu 1045f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1046afaf5a2dSDavid Somayajulu 1047f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1048f4f5df23SVikas Chaudhary reset_chip = 1; 1049afaf5a2dSDavid Somayajulu 1050f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1051f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1052f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1053f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1054f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1055afaf5a2dSDavid Somayajulu } 1056afaf5a2dSDavid Somayajulu 1057f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1058f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1059f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1060f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1061f4f5df23SVikas Chaudhary 1062f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1063f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1064f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1065f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1066f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1067f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1068f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1069f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1070f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1071f4f5df23SVikas Chaudhary } else { 1072f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1073f4f5df23SVikas Chaudhary * reset the entire chip */ 1074f4f5df23SVikas Chaudhary reset_chip = 1; 1075f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1076f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1077f4f5df23SVikas Chaudhary } 1078f4f5df23SVikas Chaudhary } 1079f4f5df23SVikas Chaudhary 1080f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1081f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1082f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1083f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 1084f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1085f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1086f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1087f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1088f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1089f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1090f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1091f4f5df23SVikas Chaudhary } 1092f4f5df23SVikas Chaudhary 1093f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1094f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1095f4f5df23SVikas Chaudhary 1096f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1097f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1098f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1099f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1100f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1101f4f5df23SVikas Chaudhary * stepping on top of the other */ 1102f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1103f4f5df23SVikas Chaudhary ssleep(6); 1104f4f5df23SVikas Chaudhary 1105f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1106f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1107f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1108f4f5df23SVikas Chaudhary } 1109f4f5df23SVikas Chaudhary 1110f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1111f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1112f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1113f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1114f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1115afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1116f4f5df23SVikas Chaudhary * resetting the ha. 1117f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1118f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1119f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1120afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1121afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1122afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1123afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1124afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1125afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1126afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1127afaf5a2dSDavid Somayajulu } else { 1128afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1129afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1130afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1131afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1132afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1133afaf5a2dSDavid Somayajulu ha->host_no, 1134afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1135afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1136afaf5a2dSDavid Somayajulu } 1137afaf5a2dSDavid Somayajulu 1138afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1139afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1140afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1141afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1142afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1143afaf5a2dSDavid Somayajulu ha->host_no)); 1144f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1145afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1146afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1147f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1148afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1149afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1150afaf5a2dSDavid Somayajulu } 1151afaf5a2dSDavid Somayajulu } 1152afaf5a2dSDavid Somayajulu } else { 1153afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1154f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1155afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1156afaf5a2dSDavid Somayajulu } 1157afaf5a2dSDavid Somayajulu 1158afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1159afaf5a2dSDavid Somayajulu 1160f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1161f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1162afaf5a2dSDavid Somayajulu 1163f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1164f4f5df23SVikas Chaudhary 1165f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1166f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 1167f4f5df23SVikas Chaudhary status == QLA_ERROR ? "FAILED" : "SUCCEDED")); 1168f4f5df23SVikas Chaudhary 1169afaf5a2dSDavid Somayajulu return status; 1170afaf5a2dSDavid Somayajulu } 1171afaf5a2dSDavid Somayajulu 1172f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1173f4f5df23SVikas Chaudhary { 1174f4f5df23SVikas Chaudhary if (ha->dpc_thread && 1175f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { 1176f4f5df23SVikas Chaudhary set_bit(AF_DPC_SCHEDULED, &ha->flags); 1177f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1178f4f5df23SVikas Chaudhary } 1179f4f5df23SVikas Chaudhary } 1180f4f5df23SVikas Chaudhary 1181afaf5a2dSDavid Somayajulu /** 1182afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1183afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1184afaf5a2dSDavid Somayajulu * 1185afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1186afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1187afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1188afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1189afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1190afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1191afaf5a2dSDavid Somayajulu **/ 1192c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1193afaf5a2dSDavid Somayajulu { 1194c4028958SDavid Howells struct scsi_qla_host *ha = 1195c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1196afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1197477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1198afaf5a2dSDavid Somayajulu 1199f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1200f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1201f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1202afaf5a2dSDavid Somayajulu 1203afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1204afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 1205afaf5a2dSDavid Somayajulu return; 1206afaf5a2dSDavid Somayajulu 1207f4f5df23SVikas Chaudhary /* HBA is in the process of being permanently disabled. 1208f4f5df23SVikas Chaudhary * Don't process anything */ 1209f4f5df23SVikas Chaudhary if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) 1210f4f5df23SVikas Chaudhary return; 1211f4f5df23SVikas Chaudhary 1212f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1213f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1214f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1215f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1216f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1217f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1218f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1219f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1220f4f5df23SVikas Chaudhary } 1221f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1222f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1223f4f5df23SVikas Chaudhary } 1224f4f5df23SVikas Chaudhary } 1225f4f5df23SVikas Chaudhary 1226f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1227f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1228afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1229f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1230f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1231f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1232f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1233f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1234f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1235f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1236f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1237f4f5df23SVikas Chaudhary } 1238f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1239f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1240f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1241afaf5a2dSDavid Somayajulu 1242477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1243afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1244afaf5a2dSDavid Somayajulu 1245afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1246afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1247afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1248afaf5a2dSDavid Somayajulu break; 1249afaf5a2dSDavid Somayajulu msleep(1000); 1250afaf5a2dSDavid Somayajulu } 1251afaf5a2dSDavid Somayajulu if (wait_time == 0) 1252afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1253afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1254afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1255f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1256477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1257477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1258f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1259477ffb9dSDavid C Somayajulu } 1260477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1261477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1262f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1263afaf5a2dSDavid Somayajulu } 1264afaf5a2dSDavid Somayajulu } 1265afaf5a2dSDavid Somayajulu 1266f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1267afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1268afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1269afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1270afaf5a2dSDavid Somayajulu 1271afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1272afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1273afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1274afaf5a2dSDavid Somayajulu 1275065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1276065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1277065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1278065aa1b4SVikas Chaudhary /* ---- link down? --- */ 1279065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1280065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1281065aa1b4SVikas Chaudhary if (atomic_read(&ddb_entry->state) == 1282065aa1b4SVikas Chaudhary DDB_STATE_ONLINE) 1283065aa1b4SVikas Chaudhary qla4xxx_mark_device_missing(ha, 1284065aa1b4SVikas Chaudhary ddb_entry); 1285065aa1b4SVikas Chaudhary } 1286065aa1b4SVikas Chaudhary } else { 1287065aa1b4SVikas Chaudhary /* ---- link up? --- * 1288065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1289065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1290065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1291065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1292065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1293065aa1b4SVikas Chaudhary 1294065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1295065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1296065aa1b4SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == 1297065aa1b4SVikas Chaudhary DDB_STATE_MISSING) || 1298065aa1b4SVikas Chaudhary (atomic_read(&ddb_entry->state) == 1299065aa1b4SVikas Chaudhary DDB_STATE_DEAD)) { 1300065aa1b4SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 1301065aa1b4SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 1302065aa1b4SVikas Chaudhary atomic_set(&ddb_entry->state, 1303065aa1b4SVikas Chaudhary DDB_STATE_ONLINE); 1304c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 1305065aa1b4SVikas Chaudhary "scsi%ld: %s: ddb[%d]" 1306f4f5df23SVikas Chaudhary " marked ONLINE\n", 1307065aa1b4SVikas Chaudhary ha->host_no, __func__, 1308f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index); 1309065aa1b4SVikas Chaudhary 1310065aa1b4SVikas Chaudhary iscsi_unblock_session( 1311065aa1b4SVikas Chaudhary ddb_entry->sess); 1312065aa1b4SVikas Chaudhary } else 1313065aa1b4SVikas Chaudhary qla4xxx_relogin_device( 1314065aa1b4SVikas Chaudhary ha, ddb_entry); 1315065aa1b4SVikas Chaudhary } 1316065aa1b4SVikas Chaudhary 1317065aa1b4SVikas Chaudhary } 1318065aa1b4SVikas Chaudhary } 1319065aa1b4SVikas Chaudhary } 1320065aa1b4SVikas Chaudhary 1321afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1322afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1323afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1324afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1325afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1326afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1327afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1328afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1329afaf5a2dSDavid Somayajulu 1330afaf5a2dSDavid Somayajulu /* 1331afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1332afaf5a2dSDavid Somayajulu * in continuing further. 1333afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1334afaf5a2dSDavid Somayajulu * the system. 1335afaf5a2dSDavid Somayajulu */ 1336afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1337afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1338afaf5a2dSDavid Somayajulu "need to reset hba\n", 1339afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1340afaf5a2dSDavid Somayajulu break; 1341afaf5a2dSDavid Somayajulu } 1342afaf5a2dSDavid Somayajulu } 1343afaf5a2dSDavid Somayajulu } 1344f4f5df23SVikas Chaudhary clear_bit(AF_DPC_SCHEDULED, &ha->flags); 1345afaf5a2dSDavid Somayajulu } 1346afaf5a2dSDavid Somayajulu 1347afaf5a2dSDavid Somayajulu /** 1348afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1349afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1350afaf5a2dSDavid Somayajulu **/ 1351afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1352afaf5a2dSDavid Somayajulu { 1353afaf5a2dSDavid Somayajulu 1354afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1355afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1356f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1357afaf5a2dSDavid Somayajulu } 1358afaf5a2dSDavid Somayajulu 1359afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1360afaf5a2dSDavid Somayajulu if (ha->timer_active) 1361afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1362afaf5a2dSDavid Somayajulu 1363f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1364f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1365f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1366f4f5df23SVikas Chaudhary 1367f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1368f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1369f4f5df23SVikas Chaudhary 1370f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1371f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1372f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1373f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1374f4f5df23SVikas Chaudhary } 1375f4f5df23SVikas Chaudhary 1376afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1377afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1378f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1379afaf5a2dSDavid Somayajulu 1380bee4fe8eSDavid C Somayajulu /* free extra memory */ 1381bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1382f4f5df23SVikas Chaudhary } 1383bee4fe8eSDavid C Somayajulu 1384f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1385f4f5df23SVikas Chaudhary { 1386f4f5df23SVikas Chaudhary int status = 0; 1387f4f5df23SVikas Chaudhary uint8_t revision_id; 1388f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1389f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1390afaf5a2dSDavid Somayajulu 1391f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1392f4f5df23SVikas Chaudhary if (status) { 1393f4f5df23SVikas Chaudhary printk(KERN_WARNING 1394f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1395f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1396f4f5df23SVikas Chaudhary goto iospace_error_exit; 1397f4f5df23SVikas Chaudhary } 1398f4f5df23SVikas Chaudhary 1399f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1400f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1401f4f5df23SVikas Chaudhary __func__, revision_id)); 1402f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1403f4f5df23SVikas Chaudhary 1404f4f5df23SVikas Chaudhary /* remap phys address */ 1405f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1406f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1407f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1408f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1409f4f5df23SVikas Chaudhary 1410f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1411f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1412f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1413f4f5df23SVikas Chaudhary printk(KERN_ERR 1414f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1415f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1416f4f5df23SVikas Chaudhary goto iospace_error_exit; 1417f4f5df23SVikas Chaudhary } 1418f4f5df23SVikas Chaudhary 1419f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1420f4f5df23SVikas Chaudhary 1421f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1422f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1423f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1424f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1425f4f5df23SVikas Chaudhary 1426f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1427f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1428f4f5df23SVikas Chaudhary 1429f4f5df23SVikas Chaudhary /* mapping of doorbell write pointer */ 1430f4f5df23SVikas Chaudhary ha->nx_db_wr_ptr = (unsigned long)ioremap(db_base + 1431f4f5df23SVikas Chaudhary (ha->pdev->devfn << 12), 4); 1432f4f5df23SVikas Chaudhary if (!ha->nx_db_wr_ptr) { 1433f4f5df23SVikas Chaudhary printk(KERN_ERR 1434f4f5df23SVikas Chaudhary "cannot remap MMIO doorbell-write (%s), aborting\n", 1435f4f5df23SVikas Chaudhary pci_name(pdev)); 1436f4f5df23SVikas Chaudhary goto iospace_error_exit; 1437f4f5df23SVikas Chaudhary } 1438f4f5df23SVikas Chaudhary /* mapping of doorbell read pointer */ 1439f4f5df23SVikas Chaudhary ha->nx_db_rd_ptr = (uint8_t *) ha->nx_pcibase + (512 * 1024) + 1440f4f5df23SVikas Chaudhary (ha->pdev->devfn * 8); 1441f4f5df23SVikas Chaudhary if (!ha->nx_db_rd_ptr) 1442f4f5df23SVikas Chaudhary printk(KERN_ERR 1443f4f5df23SVikas Chaudhary "cannot remap MMIO doorbell-read (%s), aborting\n", 1444f4f5df23SVikas Chaudhary pci_name(pdev)); 1445f4f5df23SVikas Chaudhary return 0; 1446f4f5df23SVikas Chaudhary 1447f4f5df23SVikas Chaudhary iospace_error_exit: 1448f4f5df23SVikas Chaudhary return -ENOMEM; 1449afaf5a2dSDavid Somayajulu } 1450afaf5a2dSDavid Somayajulu 1451afaf5a2dSDavid Somayajulu /*** 1452afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1453afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1454afaf5a2dSDavid Somayajulu * 1455afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1456afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1457afaf5a2dSDavid Somayajulu **/ 1458f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1459afaf5a2dSDavid Somayajulu { 1460afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1461afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1462afaf5a2dSDavid Somayajulu 1463afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1464afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1465afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1466afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1467afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1468c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1469afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1470afaf5a2dSDavid Somayajulu pio = 0; 1471afaf5a2dSDavid Somayajulu } 1472afaf5a2dSDavid Somayajulu } else { 1473c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1474afaf5a2dSDavid Somayajulu pio = 0; 1475afaf5a2dSDavid Somayajulu } 1476afaf5a2dSDavid Somayajulu 1477afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1478afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1479afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1480afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1481afaf5a2dSDavid Somayajulu 1482afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1483c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1484afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1485afaf5a2dSDavid Somayajulu 1486afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1487afaf5a2dSDavid Somayajulu } 1488c2660df3SVikas Chaudhary 1489afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1490c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1491afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1492afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1493afaf5a2dSDavid Somayajulu } 1494afaf5a2dSDavid Somayajulu 1495afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1496c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1497afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1498afaf5a2dSDavid Somayajulu 1499afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1500afaf5a2dSDavid Somayajulu } 1501afaf5a2dSDavid Somayajulu 1502afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1503afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1504afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1505afaf5a2dSDavid Somayajulu if (!ha->reg) { 1506c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1507afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1508afaf5a2dSDavid Somayajulu 1509afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1510afaf5a2dSDavid Somayajulu } 1511afaf5a2dSDavid Somayajulu 1512afaf5a2dSDavid Somayajulu return 0; 1513afaf5a2dSDavid Somayajulu 1514afaf5a2dSDavid Somayajulu iospace_error_exit: 1515afaf5a2dSDavid Somayajulu return -ENOMEM; 1516afaf5a2dSDavid Somayajulu } 1517afaf5a2dSDavid Somayajulu 1518f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1519f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1520f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1521f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1522f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1523f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1524f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1525f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1526f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1527f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1528f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1529f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1530f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1531f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1532f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1533f4f5df23SVikas Chaudhary }; 1534f4f5df23SVikas Chaudhary 1535f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1536f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1537f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1538f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1539f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1540f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1541f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1542f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1543f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1544f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1545f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1546f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1547f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1548f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1549f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1550f4f5df23SVikas Chaudhary }; 1551f4f5df23SVikas Chaudhary 1552f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1553f4f5df23SVikas Chaudhary { 1554f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1555f4f5df23SVikas Chaudhary } 1556f4f5df23SVikas Chaudhary 1557f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1558f4f5df23SVikas Chaudhary { 1559f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1560f4f5df23SVikas Chaudhary } 1561f4f5df23SVikas Chaudhary 1562f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1563f4f5df23SVikas Chaudhary { 1564f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1565f4f5df23SVikas Chaudhary } 1566f4f5df23SVikas Chaudhary 1567f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1568f4f5df23SVikas Chaudhary { 1569f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1570f4f5df23SVikas Chaudhary } 1571f4f5df23SVikas Chaudhary 1572afaf5a2dSDavid Somayajulu /** 1573afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1574afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1575afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1576afaf5a2dSDavid Somayajulu * 1577afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1578afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1579afaf5a2dSDavid Somayajulu * the driver. 1580afaf5a2dSDavid Somayajulu **/ 1581afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1582afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1583afaf5a2dSDavid Somayajulu { 1584afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1585afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1586afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1587afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1588afaf5a2dSDavid Somayajulu char buf[34]; 1589f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1590afaf5a2dSDavid Somayajulu 1591afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1592afaf5a2dSDavid Somayajulu return -1; 1593afaf5a2dSDavid Somayajulu 1594afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1595afaf5a2dSDavid Somayajulu if (host == NULL) { 1596afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1597afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1598afaf5a2dSDavid Somayajulu goto probe_disable_device; 1599afaf5a2dSDavid Somayajulu } 1600afaf5a2dSDavid Somayajulu 1601afaf5a2dSDavid Somayajulu /* Clear our data area */ 1602afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1603afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1604afaf5a2dSDavid Somayajulu 1605afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1606afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1607afaf5a2dSDavid Somayajulu ha->host = host; 1608afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1609afaf5a2dSDavid Somayajulu 1610f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1611f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1612f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1613f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1614f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1615f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1616f4f5df23SVikas Chaudhary ha->curr_window = 255; 1617f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1618f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1619f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1620f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1621f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1622f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1623f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1624f4f5df23SVikas Chaudhary } else { 1625f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1626f4f5df23SVikas Chaudhary } 1627f4f5df23SVikas Chaudhary 1628afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1629f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1630afaf5a2dSDavid Somayajulu if (ret) 1631f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1632afaf5a2dSDavid Somayajulu 1633c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1634afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1635afaf5a2dSDavid Somayajulu 1636afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1637afaf5a2dSDavid Somayajulu 1638afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1639afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1640afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1641afaf5a2dSDavid Somayajulu 1642afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1643f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1644afaf5a2dSDavid Somayajulu 1645afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1646afaf5a2dSDavid Somayajulu 1647afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1648afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1649c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1650afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1651afaf5a2dSDavid Somayajulu 1652afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1653afaf5a2dSDavid Somayajulu goto probe_failed; 1654afaf5a2dSDavid Somayajulu } 1655afaf5a2dSDavid Somayajulu 1656f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1657f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1658f4f5df23SVikas Chaudhary 1659afaf5a2dSDavid Somayajulu /* 1660afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1661afaf5a2dSDavid Somayajulu * firmware 1662afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1663afaf5a2dSDavid Somayajulu */ 1664afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1665f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1666f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1667afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1668afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1669f4f5df23SVikas Chaudhary 1670f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 1671f4f5df23SVikas Chaudhary continue; 1672f4f5df23SVikas Chaudhary 1673afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1674afaf5a2dSDavid Somayajulu } 1675f4f5df23SVikas Chaudhary 1676f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 1677c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 1678afaf5a2dSDavid Somayajulu 1679afaf5a2dSDavid Somayajulu ret = -ENODEV; 1680afaf5a2dSDavid Somayajulu goto probe_failed; 1681afaf5a2dSDavid Somayajulu } 1682afaf5a2dSDavid Somayajulu 1683afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1684afaf5a2dSDavid Somayajulu host->max_channel = 0; 1685afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1686afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1687afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1688afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1689afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1690afaf5a2dSDavid Somayajulu 1691afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1692afaf5a2dSDavid Somayajulu if (ret) { 1693c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1694c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 1695afaf5a2dSDavid Somayajulu goto probe_failed; 1696afaf5a2dSDavid Somayajulu } 1697afaf5a2dSDavid Somayajulu 1698afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1699afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1700afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1701afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1702afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1703afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1704c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 1705afaf5a2dSDavid Somayajulu ret = -ENODEV; 1706afaf5a2dSDavid Somayajulu goto probe_failed; 1707afaf5a2dSDavid Somayajulu } 1708c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1709afaf5a2dSDavid Somayajulu 1710f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 1711f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 1712f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 1713f4f5df23SVikas Chaudhary * mbx_intr_enable. 1714f4f5df23SVikas Chaudhary */ 1715f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1716f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 1717afaf5a2dSDavid Somayajulu if (ret) { 1718f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 1719f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 1720afaf5a2dSDavid Somayajulu goto probe_failed; 1721afaf5a2dSDavid Somayajulu } 1722f4f5df23SVikas Chaudhary } 1723afaf5a2dSDavid Somayajulu 1724f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1725afaf5a2dSDavid Somayajulu 1726afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1727afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1728afaf5a2dSDavid Somayajulu 1729afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1730afaf5a2dSDavid Somayajulu 1731afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1732afaf5a2dSDavid Somayajulu 1733afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1734afaf5a2dSDavid Somayajulu if (ret) 1735afaf5a2dSDavid Somayajulu goto probe_failed; 1736afaf5a2dSDavid Somayajulu 1737afaf5a2dSDavid Somayajulu printk(KERN_INFO 1738afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1739afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1740afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1741afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1742afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1743921601b7SMike Christie scsi_scan_host(host); 1744afaf5a2dSDavid Somayajulu return 0; 1745afaf5a2dSDavid Somayajulu 1746afaf5a2dSDavid Somayajulu probe_failed: 1747afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1748f4f5df23SVikas Chaudhary 1749f4f5df23SVikas Chaudhary probe_failed_ioconfig: 1750afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1751afaf5a2dSDavid Somayajulu 1752afaf5a2dSDavid Somayajulu probe_disable_device: 1753afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1754afaf5a2dSDavid Somayajulu 1755afaf5a2dSDavid Somayajulu return ret; 1756afaf5a2dSDavid Somayajulu } 1757afaf5a2dSDavid Somayajulu 1758afaf5a2dSDavid Somayajulu /** 1759afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1760afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1761afaf5a2dSDavid Somayajulu **/ 1762afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1763afaf5a2dSDavid Somayajulu { 1764afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1765afaf5a2dSDavid Somayajulu 1766afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1767afaf5a2dSDavid Somayajulu 1768f4f5df23SVikas Chaudhary set_bit(AF_HBA_GOING_AWAY, &ha->flags); 1769bee4fe8eSDavid C Somayajulu 1770afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1771afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1772afaf5a2dSDavid Somayajulu 1773afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1774afaf5a2dSDavid Somayajulu 1775afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1776afaf5a2dSDavid Somayajulu 1777afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1778afaf5a2dSDavid Somayajulu 1779f4f5df23SVikas Chaudhary pci_disable_device(pdev); 1780afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1781afaf5a2dSDavid Somayajulu } 1782afaf5a2dSDavid Somayajulu 1783afaf5a2dSDavid Somayajulu /** 1784afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1785afaf5a2dSDavid Somayajulu * @ha: HA context 1786afaf5a2dSDavid Somayajulu * 1787afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1788afaf5a2dSDavid Somayajulu * supported addressing method. 1789afaf5a2dSDavid Somayajulu */ 179047975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1791afaf5a2dSDavid Somayajulu { 1792afaf5a2dSDavid Somayajulu int retval; 1793afaf5a2dSDavid Somayajulu 1794afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 17956a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 17966a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1797afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1798afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1799afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1800afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1801284901a9SYang Hongyang DMA_BIT_MASK(32)); 1802afaf5a2dSDavid Somayajulu } 1803afaf5a2dSDavid Somayajulu } else 1804284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1805afaf5a2dSDavid Somayajulu } 1806afaf5a2dSDavid Somayajulu 1807afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1808afaf5a2dSDavid Somayajulu { 1809afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1810afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 1811afaf5a2dSDavid Somayajulu 1812afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1813afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1814d510d965SMike Christie scsi_activate_tcq(sdev, QL4_DEF_QDEPTH); 1815afaf5a2dSDavid Somayajulu return 0; 1816afaf5a2dSDavid Somayajulu } 1817afaf5a2dSDavid Somayajulu 1818afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1819afaf5a2dSDavid Somayajulu { 1820afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1821afaf5a2dSDavid Somayajulu return 0; 1822afaf5a2dSDavid Somayajulu } 1823afaf5a2dSDavid Somayajulu 1824afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1825afaf5a2dSDavid Somayajulu { 1826afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1827afaf5a2dSDavid Somayajulu } 1828afaf5a2dSDavid Somayajulu 1829afaf5a2dSDavid Somayajulu /** 1830afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1831afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1832fd589a8fSAnand Gadiyar * @index: index into the active_array 1833afaf5a2dSDavid Somayajulu * 1834afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1835afaf5a2dSDavid Somayajulu **/ 1836f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 1837f4f5df23SVikas Chaudhary uint32_t index) 1838afaf5a2dSDavid Somayajulu { 1839afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 18405369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 1841afaf5a2dSDavid Somayajulu 18425369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 18435369887aSVikas Chaudhary if (!cmd) 1844afaf5a2dSDavid Somayajulu return srb; 1845afaf5a2dSDavid Somayajulu 18465369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 18475369887aSVikas Chaudhary if (!srb) 1848afaf5a2dSDavid Somayajulu return srb; 1849afaf5a2dSDavid Somayajulu 1850afaf5a2dSDavid Somayajulu /* update counters */ 1851afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1852afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1853afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1854afaf5a2dSDavid Somayajulu if (srb->cmd) 18555369887aSVikas Chaudhary srb->cmd->host_scribble = 18565369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 1857afaf5a2dSDavid Somayajulu } 1858afaf5a2dSDavid Somayajulu return srb; 1859afaf5a2dSDavid Somayajulu } 1860afaf5a2dSDavid Somayajulu 1861afaf5a2dSDavid Somayajulu /** 1862afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 186309a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 1864afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1865afaf5a2dSDavid Somayajulu * 1866afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1867afaf5a2dSDavid Somayajulu * for some max time. 1868afaf5a2dSDavid Somayajulu **/ 1869afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1870afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1871afaf5a2dSDavid Somayajulu { 1872afaf5a2dSDavid Somayajulu int done = 0; 1873afaf5a2dSDavid Somayajulu struct srb *rp; 1874afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 1875afaf5a2dSDavid Somayajulu 1876afaf5a2dSDavid Somayajulu do { 1877afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 18785369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 1879afaf5a2dSDavid Somayajulu if (rp == NULL) { 1880afaf5a2dSDavid Somayajulu done++; 1881afaf5a2dSDavid Somayajulu break; 1882afaf5a2dSDavid Somayajulu } 1883afaf5a2dSDavid Somayajulu 1884afaf5a2dSDavid Somayajulu msleep(2000); 1885afaf5a2dSDavid Somayajulu } while (max_wait_time--); 1886afaf5a2dSDavid Somayajulu 1887afaf5a2dSDavid Somayajulu return done; 1888afaf5a2dSDavid Somayajulu } 1889afaf5a2dSDavid Somayajulu 1890afaf5a2dSDavid Somayajulu /** 1891afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 1892afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 1893afaf5a2dSDavid Somayajulu **/ 1894afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 1895afaf5a2dSDavid Somayajulu { 1896afaf5a2dSDavid Somayajulu unsigned long wait_online; 1897afaf5a2dSDavid Somayajulu 1898afaf5a2dSDavid Somayajulu wait_online = jiffies + (30 * HZ); 1899afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 1900afaf5a2dSDavid Somayajulu 1901afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 1902afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 1903afaf5a2dSDavid Somayajulu else if (ha->retry_reset_ha_cnt == 0) 1904afaf5a2dSDavid Somayajulu return QLA_ERROR; 1905afaf5a2dSDavid Somayajulu 1906afaf5a2dSDavid Somayajulu msleep(2000); 1907afaf5a2dSDavid Somayajulu } 1908afaf5a2dSDavid Somayajulu 1909afaf5a2dSDavid Somayajulu return QLA_ERROR; 1910afaf5a2dSDavid Somayajulu } 1911afaf5a2dSDavid Somayajulu 1912afaf5a2dSDavid Somayajulu /** 1913ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 1914fd589a8fSAnand Gadiyar * @ha: pointer to HBA 1915afaf5a2dSDavid Somayajulu * @t: target id 1916afaf5a2dSDavid Somayajulu * @l: lun id 1917afaf5a2dSDavid Somayajulu * 1918afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 1919afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 1920afaf5a2dSDavid Somayajulu **/ 1921ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 1922ce545039SMike Christie struct scsi_target *stgt, 1923ce545039SMike Christie struct scsi_device *sdev) 1924afaf5a2dSDavid Somayajulu { 1925afaf5a2dSDavid Somayajulu int cnt; 1926afaf5a2dSDavid Somayajulu int status = 0; 1927afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1928afaf5a2dSDavid Somayajulu 1929afaf5a2dSDavid Somayajulu /* 1930ce545039SMike Christie * Waiting for all commands for the designated target or dev 1931ce545039SMike Christie * in the active array 1932afaf5a2dSDavid Somayajulu */ 1933afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 1934afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 1935ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 1936ce545039SMike Christie (!sdev || sdev == cmd->device)) { 1937afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 1938afaf5a2dSDavid Somayajulu status++; 1939afaf5a2dSDavid Somayajulu break; 1940afaf5a2dSDavid Somayajulu } 1941afaf5a2dSDavid Somayajulu } 1942afaf5a2dSDavid Somayajulu } 1943afaf5a2dSDavid Somayajulu return status; 1944afaf5a2dSDavid Somayajulu } 1945afaf5a2dSDavid Somayajulu 1946afaf5a2dSDavid Somayajulu /** 194709a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 194809a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 194909a0f719SVikas Chaudhary * 195009a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 195109a0f719SVikas Chaudhary * command. 195209a0f719SVikas Chaudhary **/ 195309a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 195409a0f719SVikas Chaudhary { 195509a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 195609a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 195709a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 195809a0f719SVikas Chaudhary unsigned long serial = cmd->serial_number; 195909a0f719SVikas Chaudhary struct srb *srb = NULL; 196009a0f719SVikas Chaudhary int ret = SUCCESS; 196109a0f719SVikas Chaudhary int wait = 0; 196209a0f719SVikas Chaudhary 1963c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 196409a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", 196509a0f719SVikas Chaudhary ha->host_no, id, lun, cmd, serial); 196609a0f719SVikas Chaudhary 196709a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 196809a0f719SVikas Chaudhary 196909a0f719SVikas Chaudhary if (!srb) 197009a0f719SVikas Chaudhary return SUCCESS; 197109a0f719SVikas Chaudhary 197209a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 197309a0f719SVikas Chaudhary 197409a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 197509a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 197609a0f719SVikas Chaudhary ha->host_no, id, lun)); 197709a0f719SVikas Chaudhary ret = FAILED; 197809a0f719SVikas Chaudhary } else { 197909a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 198009a0f719SVikas Chaudhary ha->host_no, id, lun)); 198109a0f719SVikas Chaudhary wait = 1; 198209a0f719SVikas Chaudhary } 198309a0f719SVikas Chaudhary 198409a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 198509a0f719SVikas Chaudhary 198609a0f719SVikas Chaudhary /* Wait for command to complete */ 198709a0f719SVikas Chaudhary if (wait) { 198809a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 198909a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 199009a0f719SVikas Chaudhary ha->host_no, id, lun)); 199109a0f719SVikas Chaudhary ret = FAILED; 199209a0f719SVikas Chaudhary } 199309a0f719SVikas Chaudhary } 199409a0f719SVikas Chaudhary 1995c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 199609a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 199709a0f719SVikas Chaudhary ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); 199809a0f719SVikas Chaudhary 199909a0f719SVikas Chaudhary return ret; 200009a0f719SVikas Chaudhary } 200109a0f719SVikas Chaudhary 200209a0f719SVikas Chaudhary /** 2003afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2004afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2005afaf5a2dSDavid Somayajulu * 2006afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2007afaf5a2dSDavid Somayajulu * specified target. 2008afaf5a2dSDavid Somayajulu **/ 2009afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2010afaf5a2dSDavid Somayajulu { 2011afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2012afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2013afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2014afaf5a2dSDavid Somayajulu 2015612f7348SKaren Higgins if (!ddb_entry) 2016afaf5a2dSDavid Somayajulu return ret; 2017afaf5a2dSDavid Somayajulu 2018c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2019afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2020afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2021afaf5a2dSDavid Somayajulu 2022afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2023afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2024afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2025242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2026afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2027afaf5a2dSDavid Somayajulu 2028afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2029afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2030afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2031c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2032afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2033afaf5a2dSDavid Somayajulu } 2034afaf5a2dSDavid Somayajulu 2035ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2036ce545039SMike Christie cmd->device)) { 2037c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2038afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2039afaf5a2dSDavid Somayajulu "commands.\n"); 2040afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2041afaf5a2dSDavid Somayajulu } 2042afaf5a2dSDavid Somayajulu 20439d562913SDavid C Somayajulu /* Send marker. */ 20449d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 20459d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 20469d562913SDavid C Somayajulu goto eh_dev_reset_done; 20479d562913SDavid C Somayajulu 2048c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2049afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2050afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2051afaf5a2dSDavid Somayajulu cmd->device->lun); 2052afaf5a2dSDavid Somayajulu 2053afaf5a2dSDavid Somayajulu ret = SUCCESS; 2054afaf5a2dSDavid Somayajulu 2055afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2056afaf5a2dSDavid Somayajulu 2057afaf5a2dSDavid Somayajulu return ret; 2058afaf5a2dSDavid Somayajulu } 2059afaf5a2dSDavid Somayajulu 2060afaf5a2dSDavid Somayajulu /** 2061ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2062ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2063ce545039SMike Christie * 2064ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2065ce545039SMike Christie **/ 2066ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2067ce545039SMike Christie { 2068ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2069ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2070ce545039SMike Christie int stat; 2071ce545039SMike Christie 2072ce545039SMike Christie if (!ddb_entry) 2073ce545039SMike Christie return FAILED; 2074ce545039SMike Christie 2075ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2076ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2077ce545039SMike Christie 2078ce545039SMike Christie DEBUG2(printk(KERN_INFO 2079ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2080ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2081242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2082ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2083ce545039SMike Christie 2084ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2085ce545039SMike Christie if (stat != QLA_SUCCESS) { 2086ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2087ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2088ce545039SMike Christie return FAILED; 2089ce545039SMike Christie } 2090ce545039SMike Christie 2091ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2092ce545039SMike Christie NULL)) { 2093ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2094ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2095ce545039SMike Christie "waiting for commands.\n"); 2096ce545039SMike Christie return FAILED; 2097ce545039SMike Christie } 2098ce545039SMike Christie 20999d562913SDavid C Somayajulu /* Send marker. */ 21009d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21019d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 21029d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 21039d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 21049d562913SDavid C Somayajulu "marker iocb failed.\n"); 21059d562913SDavid C Somayajulu return FAILED; 21069d562913SDavid C Somayajulu } 21079d562913SDavid C Somayajulu 2108ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2109ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2110ce545039SMike Christie return SUCCESS; 2111ce545039SMike Christie } 2112ce545039SMike Christie 2113ce545039SMike Christie /** 2114afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2115afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2116afaf5a2dSDavid Somayajulu * 2117afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2118afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2119afaf5a2dSDavid Somayajulu **/ 2120afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2121afaf5a2dSDavid Somayajulu { 2122afaf5a2dSDavid Somayajulu int return_status = FAILED; 2123afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2124afaf5a2dSDavid Somayajulu 2125afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2126afaf5a2dSDavid Somayajulu 2127f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2128f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2129f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2130f4f5df23SVikas Chaudhary return FAILED; 2131f4f5df23SVikas Chaudhary } 2132f4f5df23SVikas Chaudhary 2133c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2134dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2135afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2136afaf5a2dSDavid Somayajulu 2137afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2138afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2139afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2140afaf5a2dSDavid Somayajulu __func__)); 2141afaf5a2dSDavid Somayajulu 2142afaf5a2dSDavid Somayajulu return FAILED; 2143afaf5a2dSDavid Somayajulu } 2144afaf5a2dSDavid Somayajulu 2145f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2146f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2147f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2148f4f5df23SVikas Chaudhary else 2149f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2150f4f5df23SVikas Chaudhary } 215150a29aecSMike Christie 2152f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2153afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2154afaf5a2dSDavid Somayajulu 2155c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 2156afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 2157afaf5a2dSDavid Somayajulu 2158afaf5a2dSDavid Somayajulu return return_status; 2159afaf5a2dSDavid Somayajulu } 2160afaf5a2dSDavid Somayajulu 2161afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2162afaf5a2dSDavid Somayajulu { 2163afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2164afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2165afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2166afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2167afaf5a2dSDavid Somayajulu }, 2168afaf5a2dSDavid Somayajulu { 2169afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2170afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2171afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2172afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2173afaf5a2dSDavid Somayajulu }, 2174d915058fSDavid C Somayajulu { 2175d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2176d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2177d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2178d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2179d915058fSDavid C Somayajulu }, 2180f4f5df23SVikas Chaudhary { 2181f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2182f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2183f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2184f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2185f4f5df23SVikas Chaudhary }, 2186afaf5a2dSDavid Somayajulu {0, 0}, 2187afaf5a2dSDavid Somayajulu }; 2188afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2189afaf5a2dSDavid Somayajulu 219047975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2191afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2192afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2193afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2194afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 2195afaf5a2dSDavid Somayajulu }; 2196afaf5a2dSDavid Somayajulu 2197afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2198afaf5a2dSDavid Somayajulu { 2199afaf5a2dSDavid Somayajulu int ret; 2200afaf5a2dSDavid Somayajulu 2201afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2202afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 220320c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2204afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2205afaf5a2dSDavid Somayajulu printk(KERN_ERR 2206afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2207afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2208afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2209afaf5a2dSDavid Somayajulu goto no_srp_cache; 2210afaf5a2dSDavid Somayajulu } 2211afaf5a2dSDavid Somayajulu 2212afaf5a2dSDavid Somayajulu /* Derive version string. */ 2213afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 221411010fecSAndrew Vasquez if (ql4xextended_error_logging) 2215afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2216afaf5a2dSDavid Somayajulu 2217afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2218afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2219afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2220afaf5a2dSDavid Somayajulu ret = -ENODEV; 2221afaf5a2dSDavid Somayajulu goto release_srb_cache; 2222afaf5a2dSDavid Somayajulu } 2223afaf5a2dSDavid Somayajulu 2224afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2225afaf5a2dSDavid Somayajulu if (ret) 2226afaf5a2dSDavid Somayajulu goto unregister_transport; 2227afaf5a2dSDavid Somayajulu 2228afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2229afaf5a2dSDavid Somayajulu return 0; 22305ae16db3SDoug Maxey 2231afaf5a2dSDavid Somayajulu unregister_transport: 2232afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2233afaf5a2dSDavid Somayajulu release_srb_cache: 2234afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2235afaf5a2dSDavid Somayajulu no_srp_cache: 2236afaf5a2dSDavid Somayajulu return ret; 2237afaf5a2dSDavid Somayajulu } 2238afaf5a2dSDavid Somayajulu 2239afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2240afaf5a2dSDavid Somayajulu { 2241afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2242afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2243afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2244afaf5a2dSDavid Somayajulu } 2245afaf5a2dSDavid Somayajulu 2246afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2247afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2248afaf5a2dSDavid Somayajulu 2249afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2250afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2251afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2252afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2253