1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 37d01d069SVikas Chaudhary * Copyright (c) 2003-2010 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 85a0e3ad6STejun Heo #include <linux/slab.h> 9afaf5a2dSDavid Somayajulu 10afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 11afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 12afaf5a2dSDavid Somayajulu 13afaf5a2dSDavid Somayajulu #include "ql4_def.h" 14bee4fe8eSDavid C Somayajulu #include "ql4_version.h" 15bee4fe8eSDavid C Somayajulu #include "ql4_glbl.h" 16bee4fe8eSDavid C Somayajulu #include "ql4_dbg.h" 17bee4fe8eSDavid C Somayajulu #include "ql4_inline.h" 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * Driver version 21afaf5a2dSDavid Somayajulu */ 2247975477SAdrian Bunk static char qla4xxx_version_str[40]; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * SRB allocation cache 26afaf5a2dSDavid Somayajulu */ 27e18b890bSChristoph Lameter static struct kmem_cache *srb_cachep; 28afaf5a2dSDavid Somayajulu 29afaf5a2dSDavid Somayajulu /* 30afaf5a2dSDavid Somayajulu * Module parameter information and variables 31afaf5a2dSDavid Somayajulu */ 32afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 33f4f5df23SVikas Chaudhary module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 35f4f5df23SVikas Chaudhary "Don't reset the HBA for driver recovery \n" 36f4f5df23SVikas Chaudhary " 0 - It will reset HBA (Default)\n" 37f4f5df23SVikas Chaudhary " 1 - It will NOT reset HBA"); 38afaf5a2dSDavid Somayajulu 3911010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 40f4f5df23SVikas Chaudhary module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); 4111010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 42afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 43afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 44afaf5a2dSDavid Somayajulu 45f4f5df23SVikas Chaudhary int ql4xenablemsix = 1; 46f4f5df23SVikas Chaudhary module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); 47f4f5df23SVikas Chaudhary MODULE_PARM_DESC(ql4xenablemsix, 48f4f5df23SVikas Chaudhary "Set to enable MSI or MSI-X interrupt mechanism.\n" 49f4f5df23SVikas Chaudhary " 0 = enable INTx interrupt mechanism.\n" 50f4f5df23SVikas Chaudhary " 1 = enable MSI-X interrupt mechanism (Default).\n" 51f4f5df23SVikas Chaudhary " 2 = enable MSI interrupt mechanism."); 52477ffb9dSDavid C Somayajulu 53d510d965SMike Christie #define QL4_DEF_QDEPTH 32 54d510d965SMike Christie 55afaf5a2dSDavid Somayajulu /* 56afaf5a2dSDavid Somayajulu * SCSI host template entry points 57afaf5a2dSDavid Somayajulu */ 5847975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 59afaf5a2dSDavid Somayajulu 60afaf5a2dSDavid Somayajulu /* 61afaf5a2dSDavid Somayajulu * iSCSI template entry points 62afaf5a2dSDavid Somayajulu */ 632174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 642174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 652174a04eSMike Christie struct sockaddr *dst_addr); 66afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 67afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 68afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 69afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 70aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 71aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 72afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 735c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 74afaf5a2dSDavid Somayajulu 75afaf5a2dSDavid Somayajulu /* 76afaf5a2dSDavid Somayajulu * SCSI host template entry points 77afaf5a2dSDavid Somayajulu */ 78f281233dSJeff Garzik static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); 7909a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 80afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 81ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 82afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 83afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 84afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 85afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 86024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 87afaf5a2dSDavid Somayajulu 88f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 89f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 90f4f5df23SVikas Chaudhary 91afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 92afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 93afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 94afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 95afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 96afaf5a2dSDavid Somayajulu 9709a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 98afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 99ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 100afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1015c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 102afaf5a2dSDavid Somayajulu 103afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 104afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 105afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 106afaf5a2dSDavid Somayajulu 107921601b7SMike Christie .scan_finished = iscsi_scan_finished, 108024f801fSMike Christie .scan_start = qla4xxx_scan_start, 109921601b7SMike Christie 110afaf5a2dSDavid Somayajulu .this_id = -1, 111afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 112afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 113afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 114afaf5a2dSDavid Somayajulu 115afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 116afaf5a2dSDavid Somayajulu }; 117afaf5a2dSDavid Somayajulu 118afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 119afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 120afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 121d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 122d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 123aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 1243b2bef1fSVikas Chaudhary ISCSI_TARGET_NAME | ISCSI_TPGT | 1253b2bef1fSVikas Chaudhary ISCSI_TARGET_ALIAS, 1268ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 12722236961SMike Christie ISCSI_HOST_IPADDRESS | 1288ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 129afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 130afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 131afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 132aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 133afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 134afaf5a2dSDavid Somayajulu }; 135afaf5a2dSDavid Somayajulu 136afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 137afaf5a2dSDavid Somayajulu 1385c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1395c656af7SMike Christie { 1405c656af7SMike Christie struct iscsi_cls_session *session; 1415c656af7SMike Christie struct ddb_entry *ddb_entry; 1425c656af7SMike Christie 1435c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1445c656af7SMike Christie ddb_entry = session->dd_data; 1455c656af7SMike Christie 1465c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1475c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1485c656af7SMike Christie return BLK_EH_RESET_TIMER; 1495c656af7SMike Christie else 1505c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1515c656af7SMike Christie } 1525c656af7SMike Christie 153afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 154afaf5a2dSDavid Somayajulu { 155afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 156afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 157afaf5a2dSDavid Somayajulu 158568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 159afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 160afaf5a2dSDavid Somayajulu 1613013cea8SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " 162568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 163568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 1643013cea8SVikas Chaudhary QL4_SESS_RECOVERY_TMO)); 165afaf5a2dSDavid Somayajulu } 166568d303bSMike Christie } 167afaf5a2dSDavid Somayajulu 168aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 169aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 170aa1e93a2SMike Christie { 171aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 172aa1e93a2SMike Christie int len; 173aa1e93a2SMike Christie 174aa1e93a2SMike Christie switch (param) { 175aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1767ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 177aa1e93a2SMike Christie break; 17822236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 17922236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 18022236961SMike Christie ha->ip_address[1], ha->ip_address[2], 18122236961SMike Christie ha->ip_address[3]); 18222236961SMike Christie break; 1838ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 18422236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1858ad5781aSMike Christie break; 186aa1e93a2SMike Christie default: 187aa1e93a2SMike Christie return -ENOSYS; 188aa1e93a2SMike Christie } 189aa1e93a2SMike Christie 190aa1e93a2SMike Christie return len; 191aa1e93a2SMike Christie } 192aa1e93a2SMike Christie 193afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 194afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 195afaf5a2dSDavid Somayajulu { 196afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 197afaf5a2dSDavid Somayajulu int len; 198afaf5a2dSDavid Somayajulu 199afaf5a2dSDavid Somayajulu switch (param) { 200afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 201afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 202afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 203afaf5a2dSDavid Somayajulu break; 204afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 205afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 206afaf5a2dSDavid Somayajulu break; 2073b2bef1fSVikas Chaudhary case ISCSI_PARAM_TARGET_ALIAS: 2083b2bef1fSVikas Chaudhary len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 2093b2bef1fSVikas Chaudhary ddb_entry->iscsi_alias); 2103b2bef1fSVikas Chaudhary break; 211afaf5a2dSDavid Somayajulu default: 212afaf5a2dSDavid Somayajulu return -ENOSYS; 213afaf5a2dSDavid Somayajulu } 214afaf5a2dSDavid Somayajulu 215afaf5a2dSDavid Somayajulu return len; 216afaf5a2dSDavid Somayajulu } 217afaf5a2dSDavid Somayajulu 218afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 219afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 220afaf5a2dSDavid Somayajulu { 221afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 222afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 223afaf5a2dSDavid Somayajulu int len; 224afaf5a2dSDavid Somayajulu 225afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 226afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 227afaf5a2dSDavid Somayajulu 228afaf5a2dSDavid Somayajulu switch (param) { 229afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 230afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 231afaf5a2dSDavid Somayajulu break; 232afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 233afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 23463779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 235afaf5a2dSDavid Somayajulu break; 236afaf5a2dSDavid Somayajulu default: 237afaf5a2dSDavid Somayajulu return -ENOSYS; 238afaf5a2dSDavid Somayajulu } 239afaf5a2dSDavid Somayajulu 240afaf5a2dSDavid Somayajulu return len; 241afaf5a2dSDavid Somayajulu } 242afaf5a2dSDavid Somayajulu 2432174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2442174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2452174a04eSMike Christie struct sockaddr *dst_addr) 246afaf5a2dSDavid Somayajulu { 247afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 248afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 249afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 250afaf5a2dSDavid Somayajulu int ret = 0; 251afaf5a2dSDavid Somayajulu 252afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 253afaf5a2dSDavid Somayajulu 254afaf5a2dSDavid Somayajulu switch (type) { 255afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 256afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 257afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 258afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 259afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 260afaf5a2dSDavid Somayajulu ret = -EIO; 261afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 262afaf5a2dSDavid Somayajulu /* 263afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 264afaf5a2dSDavid Somayajulu */ 265afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 266afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 267afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 268afaf5a2dSDavid Somayajulu ret = -EIO; 269afaf5a2dSDavid Somayajulu } else 270afaf5a2dSDavid Somayajulu ret = -ENOSYS; 271afaf5a2dSDavid Somayajulu break; 272afaf5a2dSDavid Somayajulu default: 273afaf5a2dSDavid Somayajulu ret = -ENOSYS; 274afaf5a2dSDavid Somayajulu } 275afaf5a2dSDavid Somayajulu return ret; 276afaf5a2dSDavid Somayajulu } 277afaf5a2dSDavid Somayajulu 278afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 279afaf5a2dSDavid Somayajulu { 280afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 281afaf5a2dSDavid Somayajulu return; 282afaf5a2dSDavid Somayajulu 283afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 28426974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 285afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 286afaf5a2dSDavid Somayajulu } 287afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 288afaf5a2dSDavid Somayajulu } 289afaf5a2dSDavid Somayajulu 290afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 291afaf5a2dSDavid Somayajulu { 292afaf5a2dSDavid Somayajulu int err; 293afaf5a2dSDavid Somayajulu 2943013cea8SVikas Chaudhary ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO; 2953013cea8SVikas Chaudhary 296afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 297afaf5a2dSDavid Somayajulu if (err) { 298afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 299afaf5a2dSDavid Somayajulu return err; 300afaf5a2dSDavid Somayajulu } 301afaf5a2dSDavid Somayajulu 3025d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 303afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 304afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 305afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 306afaf5a2dSDavid Somayajulu return -ENOMEM; 307afaf5a2dSDavid Somayajulu } 308b635930dSMike Christie 309b635930dSMike Christie /* finally ready to go */ 310b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 311afaf5a2dSDavid Somayajulu return 0; 312afaf5a2dSDavid Somayajulu } 313afaf5a2dSDavid Somayajulu 314afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 315afaf5a2dSDavid Somayajulu { 316afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 317afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 318afaf5a2dSDavid Somayajulu 3195d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3205d91e209SMike Christie sizeof(struct ddb_entry)); 321afaf5a2dSDavid Somayajulu if (!sess) 322afaf5a2dSDavid Somayajulu return NULL; 323afaf5a2dSDavid Somayajulu 324afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 325afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 326afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 327afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 328afaf5a2dSDavid Somayajulu return ddb_entry; 329afaf5a2dSDavid Somayajulu } 330afaf5a2dSDavid Somayajulu 331024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 332024f801fSMike Christie { 333024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 334024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 335024f801fSMike Christie 336024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 337024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 338024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 339024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 340024f801fSMike Christie } 341024f801fSMike Christie } 342024f801fSMike Christie 343afaf5a2dSDavid Somayajulu /* 344afaf5a2dSDavid Somayajulu * Timer routines 345afaf5a2dSDavid Somayajulu */ 346afaf5a2dSDavid Somayajulu 347afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 348afaf5a2dSDavid Somayajulu unsigned long interval) 349afaf5a2dSDavid Somayajulu { 350afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 351afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 352afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 353afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 354afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 355afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 356afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 357afaf5a2dSDavid Somayajulu ha->timer_active = 1; 358afaf5a2dSDavid Somayajulu } 359afaf5a2dSDavid Somayajulu 360afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 361afaf5a2dSDavid Somayajulu { 362afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 363afaf5a2dSDavid Somayajulu ha->timer_active = 0; 364afaf5a2dSDavid Somayajulu } 365afaf5a2dSDavid Somayajulu 366afaf5a2dSDavid Somayajulu /*** 367afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 368afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 369afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 370afaf5a2dSDavid Somayajulu * 371f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 372afaf5a2dSDavid Somayajulu **/ 373afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 374afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 375afaf5a2dSDavid Somayajulu { 376f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 377afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 378f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 379f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 380f4f5df23SVikas Chaudhary } else 381f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 382f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 383f4f5df23SVikas Chaudhary 384b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 385e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 386afaf5a2dSDavid Somayajulu } 387afaf5a2dSDavid Somayajulu 388f4f5df23SVikas Chaudhary /** 389f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 390f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 391f4f5df23SVikas Chaudhary * 392f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 393f4f5df23SVikas Chaudhary **/ 394f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 395f4f5df23SVikas Chaudhary { 396f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 397f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 398f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 399f4f5df23SVikas Chaudhary } 400f4f5df23SVikas Chaudhary } 401f4f5df23SVikas Chaudhary 402afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 403afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 404afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 405afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 406afaf5a2dSDavid Somayajulu { 407afaf5a2dSDavid Somayajulu struct srb *srb; 408afaf5a2dSDavid Somayajulu 409afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 410afaf5a2dSDavid Somayajulu if (!srb) 411afaf5a2dSDavid Somayajulu return srb; 412afaf5a2dSDavid Somayajulu 41309a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 414afaf5a2dSDavid Somayajulu srb->ha = ha; 415afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 416afaf5a2dSDavid Somayajulu srb->cmd = cmd; 417afaf5a2dSDavid Somayajulu srb->flags = 0; 4185369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 419afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 420afaf5a2dSDavid Somayajulu 421afaf5a2dSDavid Somayajulu return srb; 422afaf5a2dSDavid Somayajulu } 423afaf5a2dSDavid Somayajulu 424afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 425afaf5a2dSDavid Somayajulu { 426afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 427afaf5a2dSDavid Somayajulu 428afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4295f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 430afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 431afaf5a2dSDavid Somayajulu } 4325369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 433afaf5a2dSDavid Somayajulu } 434afaf5a2dSDavid Somayajulu 43509a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 436afaf5a2dSDavid Somayajulu { 43709a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 438afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 43909a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 440afaf5a2dSDavid Somayajulu 441afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 442afaf5a2dSDavid Somayajulu 443afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 444afaf5a2dSDavid Somayajulu 445afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 446afaf5a2dSDavid Somayajulu } 447afaf5a2dSDavid Somayajulu 448afaf5a2dSDavid Somayajulu /** 449afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 450afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 451afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 452afaf5a2dSDavid Somayajulu * that the command has been processed. 453afaf5a2dSDavid Somayajulu * 454afaf5a2dSDavid Somayajulu * Remarks: 455afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 456afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 457afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 458afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 459afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 460afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 461afaf5a2dSDavid Somayajulu **/ 462f281233dSJeff Garzik static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, 463afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 464afaf5a2dSDavid Somayajulu { 465afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 466afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4677fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 468afaf5a2dSDavid Somayajulu struct srb *srb; 469afaf5a2dSDavid Somayajulu int rval; 470afaf5a2dSDavid Somayajulu 4712232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 4722232be0dSLalit Chandivade if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) 4732232be0dSLalit Chandivade cmd->result = DID_NO_CONNECT << 16; 4742232be0dSLalit Chandivade else 4752232be0dSLalit Chandivade cmd->result = DID_REQUEUE << 16; 4762232be0dSLalit Chandivade goto qc_fail_command; 4772232be0dSLalit Chandivade } 4782232be0dSLalit Chandivade 4797fb1921bSMike Christie if (!sess) { 4807fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4817fb1921bSMike Christie goto qc_fail_command; 4827fb1921bSMike Christie } 4837fb1921bSMike Christie 4847fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4857fb1921bSMike Christie if (rval) { 4867fb1921bSMike Christie cmd->result = rval; 4877fb1921bSMike Christie goto qc_fail_command; 4887fb1921bSMike Christie } 4897fb1921bSMike Christie 490afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 491afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 492afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 493afaf5a2dSDavid Somayajulu goto qc_fail_command; 494afaf5a2dSDavid Somayajulu } 495c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 496afaf5a2dSDavid Somayajulu } 497afaf5a2dSDavid Somayajulu 498f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 499f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 500f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 501f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 502f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 503f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 504f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 505477ffb9dSDavid C Somayajulu goto qc_host_busy; 506477ffb9dSDavid C Somayajulu 507afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 508afaf5a2dSDavid Somayajulu 509afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 510afaf5a2dSDavid Somayajulu if (!srb) 511afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 512afaf5a2dSDavid Somayajulu 513afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 514afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 515afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 516afaf5a2dSDavid Somayajulu 517afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 518afaf5a2dSDavid Somayajulu return 0; 519afaf5a2dSDavid Somayajulu 520afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 521afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 522afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 523afaf5a2dSDavid Somayajulu 524afaf5a2dSDavid Somayajulu qc_host_busy_lock: 525afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 526afaf5a2dSDavid Somayajulu 527afaf5a2dSDavid Somayajulu qc_host_busy: 528afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 529afaf5a2dSDavid Somayajulu 530afaf5a2dSDavid Somayajulu qc_fail_command: 531afaf5a2dSDavid Somayajulu done(cmd); 532afaf5a2dSDavid Somayajulu 533afaf5a2dSDavid Somayajulu return 0; 534afaf5a2dSDavid Somayajulu } 535afaf5a2dSDavid Somayajulu 536f281233dSJeff Garzik static DEF_SCSI_QCMD(qla4xxx_queuecommand) 537f281233dSJeff Garzik 538afaf5a2dSDavid Somayajulu /** 539afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 540afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 541afaf5a2dSDavid Somayajulu * 542afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 543afaf5a2dSDavid Somayajulu **/ 544afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 545afaf5a2dSDavid Somayajulu { 546afaf5a2dSDavid Somayajulu if (ha->queues) 547afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 548afaf5a2dSDavid Somayajulu ha->queues_dma); 549afaf5a2dSDavid Somayajulu 550afaf5a2dSDavid Somayajulu ha->queues_len = 0; 551afaf5a2dSDavid Somayajulu ha->queues = NULL; 552afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 553afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 554afaf5a2dSDavid Somayajulu ha->request_dma = 0; 555afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 556afaf5a2dSDavid Somayajulu ha->response_dma = 0; 557afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 558afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 559afaf5a2dSDavid Somayajulu 560afaf5a2dSDavid Somayajulu /* Free srb pool. */ 561afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 562afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 563afaf5a2dSDavid Somayajulu 564afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 565afaf5a2dSDavid Somayajulu 566afaf5a2dSDavid Somayajulu /* release io space registers */ 567f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 568f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 569f4f5df23SVikas Chaudhary iounmap( 570f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 571f4f5df23SVikas Chaudhary } else if (ha->reg) 572afaf5a2dSDavid Somayajulu iounmap(ha->reg); 573afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 574afaf5a2dSDavid Somayajulu } 575afaf5a2dSDavid Somayajulu 576afaf5a2dSDavid Somayajulu /** 577afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 578afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 579afaf5a2dSDavid Somayajulu * 580afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 581afaf5a2dSDavid Somayajulu * for srbs. 582afaf5a2dSDavid Somayajulu **/ 583afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 584afaf5a2dSDavid Somayajulu { 585afaf5a2dSDavid Somayajulu unsigned long align; 586afaf5a2dSDavid Somayajulu 587afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 588afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 589afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 590afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 591afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 592afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 593afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 594afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 595afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 596c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 597afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 598afaf5a2dSDavid Somayajulu 599afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 600afaf5a2dSDavid Somayajulu } 601afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 602afaf5a2dSDavid Somayajulu 603afaf5a2dSDavid Somayajulu /* 604afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 605afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 606afaf5a2dSDavid Somayajulu */ 607afaf5a2dSDavid Somayajulu align = 0; 608afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 609afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 610afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 611afaf5a2dSDavid Somayajulu 612afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 613afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 614afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 615afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 616afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 617afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 618afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 619afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 620afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 621afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 622afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 623afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 624afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 625afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 626afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 627afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 628afaf5a2dSDavid Somayajulu 629afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 630afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 631afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 632afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 633c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 634afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 635afaf5a2dSDavid Somayajulu 636afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 637afaf5a2dSDavid Somayajulu } 638afaf5a2dSDavid Somayajulu 639afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 640afaf5a2dSDavid Somayajulu 641afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 642afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 643afaf5a2dSDavid Somayajulu return QLA_ERROR; 644afaf5a2dSDavid Somayajulu } 645afaf5a2dSDavid Somayajulu 646afaf5a2dSDavid Somayajulu /** 647f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 648f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 649f4f5df23SVikas Chaudhary * 650f4f5df23SVikas Chaudhary * Context: Interrupt 651f4f5df23SVikas Chaudhary **/ 652f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 653f4f5df23SVikas Chaudhary { 654f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 655f4f5df23SVikas Chaudhary 656f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 6572232be0dSLalit Chandivade /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ 6582232be0dSLalit Chandivade if (fw_heartbeat_counter == 0xffffffff) { 6592232be0dSLalit Chandivade DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " 6602232be0dSLalit Chandivade "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", 6612232be0dSLalit Chandivade ha->host_no, __func__)); 6622232be0dSLalit Chandivade return; 6632232be0dSLalit Chandivade } 664f4f5df23SVikas Chaudhary 665f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 666f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 667f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 668f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 669f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 670f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 671f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 67221033639SNilesh Javali 673f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 674f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 675f4f5df23SVikas Chaudhary * DPC */ 676f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 677f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 678f4f5df23SVikas Chaudhary else { 679f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 680f4f5df23SVikas Chaudhary ha->host_no, __func__); 681f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 682f4f5df23SVikas Chaudhary } 683f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 68421033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 685f4f5df23SVikas Chaudhary } 68699457d75SLalit Chandivade } else 68799457d75SLalit Chandivade ha->seconds_since_last_heartbeat = 0; 68899457d75SLalit Chandivade 689f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 690f4f5df23SVikas Chaudhary } 691f4f5df23SVikas Chaudhary 692f4f5df23SVikas Chaudhary /** 693f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 694f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 695f4f5df23SVikas Chaudhary * 696f4f5df23SVikas Chaudhary * Context: Interrupt 697f4f5df23SVikas Chaudhary **/ 698f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 699f4f5df23SVikas Chaudhary { 700f4f5df23SVikas Chaudhary uint32_t dev_state; 701f4f5df23SVikas Chaudhary 702f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 703f4f5df23SVikas Chaudhary 704f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 705d56a1f7bSLalit Chandivade if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 706d56a1f7bSLalit Chandivade test_bit(DPC_RESET_HA, &ha->dpc_flags) || 707d56a1f7bSLalit Chandivade test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags))) { 708f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 709f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 7103930b8c1SVikas Chaudhary if (!ql4xdontresethba) { 7113930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: " 7123930b8c1SVikas Chaudhary "NEED RESET!\n", __func__); 713f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 714f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 71521033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 7163930b8c1SVikas Chaudhary } 717f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 718f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 7193930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", 7203930b8c1SVikas Chaudhary __func__); 721f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 722f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 723f4f5df23SVikas Chaudhary } else { 724f4f5df23SVikas Chaudhary /* Check firmware health */ 725f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 726f4f5df23SVikas Chaudhary } 727f4f5df23SVikas Chaudhary } 728f4f5df23SVikas Chaudhary } 729f4f5df23SVikas Chaudhary 730f4f5df23SVikas Chaudhary /** 731afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 732afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 733afaf5a2dSDavid Somayajulu **/ 734afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 735afaf5a2dSDavid Somayajulu { 736afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 737afaf5a2dSDavid Somayajulu int start_dpc = 0; 7382232be0dSLalit Chandivade uint16_t w; 7392232be0dSLalit Chandivade 7402232be0dSLalit Chandivade /* If we are in the middle of AER/EEH processing 7412232be0dSLalit Chandivade * skip any processing and reschedule the timer 7422232be0dSLalit Chandivade */ 7432232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 7442232be0dSLalit Chandivade mod_timer(&ha->timer, jiffies + HZ); 7452232be0dSLalit Chandivade return; 7462232be0dSLalit Chandivade } 7472232be0dSLalit Chandivade 7482232be0dSLalit Chandivade /* Hardware read to trigger an EEH error during mailbox waits. */ 7492232be0dSLalit Chandivade if (!pci_channel_offline(ha->pdev)) 7502232be0dSLalit Chandivade pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); 751afaf5a2dSDavid Somayajulu 752f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 753f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 754f4f5df23SVikas Chaudhary } 755f4f5df23SVikas Chaudhary 756afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 757afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 758afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 759afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 760afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 761afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 762afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 763afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 764afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 765afaf5a2dSDavid Somayajulu == 0) { 766afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 767afaf5a2dSDavid Somayajulu retry_relogin_timer, 768afaf5a2dSDavid Somayajulu INVALID_ENTRY); 769afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 770afaf5a2dSDavid Somayajulu &ha->dpc_flags); 771afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 772f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 773afaf5a2dSDavid Somayajulu " login device\n", 774afaf5a2dSDavid Somayajulu ha->host_no, __func__, 775afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 776afaf5a2dSDavid Somayajulu } else 777afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 778afaf5a2dSDavid Somayajulu retry_relogin_timer); 779afaf5a2dSDavid Somayajulu } 780afaf5a2dSDavid Somayajulu } 781afaf5a2dSDavid Somayajulu 782afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 783afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 784afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 785afaf5a2dSDavid Somayajulu /* 786afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 787afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 788afaf5a2dSDavid Somayajulu */ 789afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 790afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 791afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 792afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 793afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 794afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 795f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 796afaf5a2dSDavid Somayajulu " timed out-retrying" 797afaf5a2dSDavid Somayajulu " relogin (%d)\n", 798afaf5a2dSDavid Somayajulu ha->host_no, 799afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 800afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 801afaf5a2dSDavid Somayajulu relogin_retry_count)) 802afaf5a2dSDavid Somayajulu ); 803afaf5a2dSDavid Somayajulu start_dpc++; 804f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 805cd09b2c3SJustin P. Mattock "initiate relogin after" 806afaf5a2dSDavid Somayajulu " %d seconds\n", 807afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 808afaf5a2dSDavid Somayajulu ddb_entry->target, 809afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 810afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 811afaf5a2dSDavid Somayajulu ); 812afaf5a2dSDavid Somayajulu 813afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 814afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 815afaf5a2dSDavid Somayajulu } 816afaf5a2dSDavid Somayajulu } 817afaf5a2dSDavid Somayajulu } 818afaf5a2dSDavid Somayajulu 819f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 820afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 821afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 822afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 823afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 824afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 825afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 826afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 827afaf5a2dSDavid Somayajulu } 828f4f5df23SVikas Chaudhary } 829afaf5a2dSDavid Somayajulu 830afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 831afaf5a2dSDavid Somayajulu if ((start_dpc || 832afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 833afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 834afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 835f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 836afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 837afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 838065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 839f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 840f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 841afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 842f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags) && 843afaf5a2dSDavid Somayajulu ha->dpc_thread) { 844afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 845afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 846afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 847f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 848afaf5a2dSDavid Somayajulu } 849afaf5a2dSDavid Somayajulu 850afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 851afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 852afaf5a2dSDavid Somayajulu 853afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 854afaf5a2dSDavid Somayajulu } 855afaf5a2dSDavid Somayajulu 856afaf5a2dSDavid Somayajulu /** 857afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 858afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 859afaf5a2dSDavid Somayajulu * 860afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 861afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 862afaf5a2dSDavid Somayajulu **/ 863afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 864afaf5a2dSDavid Somayajulu { 865afaf5a2dSDavid Somayajulu uint32_t index = 0; 866afaf5a2dSDavid Somayajulu unsigned long flags; 867afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 868afaf5a2dSDavid Somayajulu 869f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 870f4f5df23SVikas Chaudhary 871f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 872f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 873f4f5df23SVikas Chaudhary 874f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 875afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 876afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 877afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 878afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 879a1e0063dSMike Christie /* 880a1e0063dSMike Christie * We cannot just check if the index is valid, 881a1e0063dSMike Christie * becase if we are run from the scsi eh, then 882a1e0063dSMike Christie * the scsi/block layer is going to prevent 883a1e0063dSMike Christie * the tag from being released. 884a1e0063dSMike Christie */ 885a1e0063dSMike Christie if (cmd != NULL && CMD_SP(cmd)) 886afaf5a2dSDavid Somayajulu break; 887afaf5a2dSDavid Somayajulu } 888afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 889afaf5a2dSDavid Somayajulu 890afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 891f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 892f4f5df23SVikas Chaudhary return QLA_SUCCESS; 893afaf5a2dSDavid Somayajulu 894afaf5a2dSDavid Somayajulu msleep(1000); 895afaf5a2dSDavid Somayajulu } 896f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 897f4f5df23SVikas Chaudhary * return ERROR. */ 898f4f5df23SVikas Chaudhary return QLA_ERROR; 899afaf5a2dSDavid Somayajulu } 900afaf5a2dSDavid Somayajulu 901f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 902afaf5a2dSDavid Somayajulu { 903afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 904477ffb9dSDavid C Somayajulu unsigned long flags = 0; 905477ffb9dSDavid C Somayajulu 906477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 907afaf5a2dSDavid Somayajulu 908f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 909f4f5df23SVikas Chaudhary return QLA_ERROR; 910f4f5df23SVikas Chaudhary 911afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 912afaf5a2dSDavid Somayajulu 913afaf5a2dSDavid Somayajulu /* 914afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 915afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 916afaf5a2dSDavid Somayajulu */ 917afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 918afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 919afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 920afaf5a2dSDavid Somayajulu 921afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 922afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 923afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 924afaf5a2dSDavid Somayajulu 925afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 926f4f5df23SVikas Chaudhary return QLA_SUCCESS; 927477ffb9dSDavid C Somayajulu } 928477ffb9dSDavid C Somayajulu 929477ffb9dSDavid C Somayajulu /** 930477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 931477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 932477ffb9dSDavid C Somayajulu **/ 933477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 934477ffb9dSDavid C Somayajulu { 935477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 936477ffb9dSDavid C Somayajulu unsigned long flags = 0; 937f931c534SVikas Chaudhary int status; 938477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 939477ffb9dSDavid C Somayajulu 940f931c534SVikas Chaudhary status = qla4xxx_hw_reset(ha); 941f931c534SVikas Chaudhary if (status != QLA_SUCCESS) 942f931c534SVikas Chaudhary return status; 943afaf5a2dSDavid Somayajulu 944f931c534SVikas Chaudhary status = QLA_ERROR; 945afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 946afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 947afaf5a2dSDavid Somayajulu do { 948afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 949afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 950afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 951afaf5a2dSDavid Somayajulu 952afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 953afaf5a2dSDavid Somayajulu break; 954afaf5a2dSDavid Somayajulu 955afaf5a2dSDavid Somayajulu msleep(1000); 956afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 957afaf5a2dSDavid Somayajulu 958afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 959afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 960afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 961afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 962afaf5a2dSDavid Somayajulu ha->host_no)); 963afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 964afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 965afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 966afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 967afaf5a2dSDavid Somayajulu } 968afaf5a2dSDavid Somayajulu 969afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 970afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 971afaf5a2dSDavid Somayajulu do { 972afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 973afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 974afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 975afaf5a2dSDavid Somayajulu 976afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 977afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 978afaf5a2dSDavid Somayajulu break; 979afaf5a2dSDavid Somayajulu } 980afaf5a2dSDavid Somayajulu 981afaf5a2dSDavid Somayajulu msleep(1000); 982afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 983afaf5a2dSDavid Somayajulu 984afaf5a2dSDavid Somayajulu /* 985afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 986afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 987afaf5a2dSDavid Somayajulu */ 988afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 989afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 990afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 991afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 992afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 993afaf5a2dSDavid Somayajulu } 994afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 995afaf5a2dSDavid Somayajulu 996afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 997afaf5a2dSDavid Somayajulu * function is also enabled. 998afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 999afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 1000afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 1001afaf5a2dSDavid Somayajulu */ 1002afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 1003afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 1004afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1005afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 1006afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1007afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1008afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1009afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1010afaf5a2dSDavid Somayajulu do { 1011afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1012afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1013afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1014afaf5a2dSDavid Somayajulu 1015afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 1016afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1017afaf5a2dSDavid Somayajulu break; 1018afaf5a2dSDavid Somayajulu } 1019afaf5a2dSDavid Somayajulu 1020afaf5a2dSDavid Somayajulu msleep(1000); 1021afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1022afaf5a2dSDavid Somayajulu } 1023afaf5a2dSDavid Somayajulu 1024afaf5a2dSDavid Somayajulu return status; 1025afaf5a2dSDavid Somayajulu } 1026afaf5a2dSDavid Somayajulu 1027afaf5a2dSDavid Somayajulu /** 1028f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 1029afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1030f4f5df23SVikas Chaudhary * @res: returned scsi status 1031afaf5a2dSDavid Somayajulu * 1032afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 1033afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 1034afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 1035afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 1036afaf5a2dSDavid Somayajulu **/ 1037f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1038afaf5a2dSDavid Somayajulu { 1039afaf5a2dSDavid Somayajulu struct srb *srb; 1040afaf5a2dSDavid Somayajulu int i; 1041afaf5a2dSDavid Somayajulu unsigned long flags; 1042afaf5a2dSDavid Somayajulu 1043afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1044afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1045afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1046afaf5a2dSDavid Somayajulu if (srb != NULL) { 1047f4f5df23SVikas Chaudhary srb->cmd->result = res; 104809a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1049afaf5a2dSDavid Somayajulu } 1050afaf5a2dSDavid Somayajulu } 1051afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1052afaf5a2dSDavid Somayajulu } 1053afaf5a2dSDavid Somayajulu 1054f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1055f4f5df23SVikas Chaudhary { 1056f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1057f4f5df23SVikas Chaudhary 1058f4f5df23SVikas Chaudhary /* Disable the board */ 1059f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1060f4f5df23SVikas Chaudhary 1061f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1062f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1063f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1064f4f5df23SVikas Chaudhary } 1065f4f5df23SVikas Chaudhary 1066afaf5a2dSDavid Somayajulu /** 1067afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1068afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1069afaf5a2dSDavid Somayajulu **/ 1070f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1071afaf5a2dSDavid Somayajulu { 1072f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1073f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1074afaf5a2dSDavid Somayajulu 1075afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1076f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1077afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 107850a29aecSMike Christie 1079f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1080afaf5a2dSDavid Somayajulu 1081f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1082afaf5a2dSDavid Somayajulu 1083f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1084f4f5df23SVikas Chaudhary reset_chip = 1; 1085afaf5a2dSDavid Somayajulu 1086f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1087f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1088f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1089f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1090f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1091afaf5a2dSDavid Somayajulu } 1092afaf5a2dSDavid Somayajulu 1093f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1094f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1095f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1096f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1097f4f5df23SVikas Chaudhary 1098f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1099f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1100f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1101f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1102f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 11032bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1104f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1105f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1106f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1107f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1108f4f5df23SVikas Chaudhary } else { 1109f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1110f4f5df23SVikas Chaudhary * reset the entire chip */ 1111f4f5df23SVikas Chaudhary reset_chip = 1; 1112f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1113f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1114f4f5df23SVikas Chaudhary } 1115f4f5df23SVikas Chaudhary } 1116f4f5df23SVikas Chaudhary 1117f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1118f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1119f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1120f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 11212bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1122f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1123f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1124f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1125f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1126f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1127f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1128f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1129f4f5df23SVikas Chaudhary } 1130f4f5df23SVikas Chaudhary 1131f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1132f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1133f4f5df23SVikas Chaudhary 1134f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1135f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1136f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1137f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1138f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1139f4f5df23SVikas Chaudhary * stepping on top of the other */ 1140f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1141f4f5df23SVikas Chaudhary ssleep(6); 1142f4f5df23SVikas Chaudhary 1143f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1144f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1145f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1146f4f5df23SVikas Chaudhary } 1147f4f5df23SVikas Chaudhary 1148f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1149f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1150f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1151f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1152f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1153afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1154f4f5df23SVikas Chaudhary * resetting the ha. 1155f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1156f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1157f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1158afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1159afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1160afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1161afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1162afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1163afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1164afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1165afaf5a2dSDavid Somayajulu } else { 1166afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1167afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1168afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1169afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1170afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1171afaf5a2dSDavid Somayajulu ha->host_no, 1172afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1173afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1174afaf5a2dSDavid Somayajulu } 1175afaf5a2dSDavid Somayajulu 1176afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1177afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1178afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1179afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1180afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1181afaf5a2dSDavid Somayajulu ha->host_no)); 1182f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1183afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1184afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1185f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1186afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1187afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1188afaf5a2dSDavid Somayajulu } 1189afaf5a2dSDavid Somayajulu } 1190afaf5a2dSDavid Somayajulu } else { 1191afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1192f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1193afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1194afaf5a2dSDavid Somayajulu } 1195afaf5a2dSDavid Somayajulu 1196afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1197afaf5a2dSDavid Somayajulu 1198f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1199f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1200afaf5a2dSDavid Somayajulu 1201f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1202f4f5df23SVikas Chaudhary 1203f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1204f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 1205f4f5df23SVikas Chaudhary status == QLA_ERROR ? "FAILED" : "SUCCEDED")); 1206f4f5df23SVikas Chaudhary 1207afaf5a2dSDavid Somayajulu return status; 1208afaf5a2dSDavid Somayajulu } 1209afaf5a2dSDavid Somayajulu 1210f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1211f4f5df23SVikas Chaudhary { 1212f4f5df23SVikas Chaudhary if (ha->dpc_thread && 1213f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { 1214f4f5df23SVikas Chaudhary set_bit(AF_DPC_SCHEDULED, &ha->flags); 1215f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1216f4f5df23SVikas Chaudhary } 1217f4f5df23SVikas Chaudhary } 1218f4f5df23SVikas Chaudhary 1219afaf5a2dSDavid Somayajulu /** 1220afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1221afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1222afaf5a2dSDavid Somayajulu * 1223afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1224afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1225afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1226afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1227afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1228afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1229afaf5a2dSDavid Somayajulu **/ 1230c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1231afaf5a2dSDavid Somayajulu { 1232c4028958SDavid Howells struct scsi_qla_host *ha = 1233c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1234afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1235477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1236afaf5a2dSDavid Somayajulu 1237f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1238f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1239f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1240afaf5a2dSDavid Somayajulu 1241afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1242afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 12430753b487SVikas Chaudhary goto do_dpc_exit; 1244afaf5a2dSDavid Somayajulu 12452232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 12462232be0dSLalit Chandivade DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", 12472232be0dSLalit Chandivade ha->host_no, __func__, ha->flags)); 12482232be0dSLalit Chandivade goto do_dpc_exit; 12492232be0dSLalit Chandivade } 12502232be0dSLalit Chandivade 1251f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1252f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1253f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1254f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1255f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1256f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1257f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1258f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1259f4f5df23SVikas Chaudhary } 1260f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1261f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1262f4f5df23SVikas Chaudhary } 1263f4f5df23SVikas Chaudhary } 1264f4f5df23SVikas Chaudhary 1265f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1266f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1267afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1268f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1269f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1270f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1271f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1272f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1273f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1274f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1275f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1276f4f5df23SVikas Chaudhary } 1277f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1278f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1279f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1280afaf5a2dSDavid Somayajulu 1281477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1282afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1283afaf5a2dSDavid Somayajulu 1284afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1285afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1286afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1287afaf5a2dSDavid Somayajulu break; 1288afaf5a2dSDavid Somayajulu msleep(1000); 1289afaf5a2dSDavid Somayajulu } 1290afaf5a2dSDavid Somayajulu if (wait_time == 0) 1291afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1292afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1293afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1294f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1295477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1296477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1297f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1298477ffb9dSDavid C Somayajulu } 1299477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1300477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1301f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1302afaf5a2dSDavid Somayajulu } 1303afaf5a2dSDavid Somayajulu } 1304afaf5a2dSDavid Somayajulu 1305f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1306afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1307afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1308afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1309afaf5a2dSDavid Somayajulu 1310afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1311afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1312afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1313afaf5a2dSDavid Somayajulu 1314065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1315065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1316065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1317065aa1b4SVikas Chaudhary /* ---- link down? --- */ 1318065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1319065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1320065aa1b4SVikas Chaudhary if (atomic_read(&ddb_entry->state) == 1321065aa1b4SVikas Chaudhary DDB_STATE_ONLINE) 1322065aa1b4SVikas Chaudhary qla4xxx_mark_device_missing(ha, 1323065aa1b4SVikas Chaudhary ddb_entry); 1324065aa1b4SVikas Chaudhary } 1325065aa1b4SVikas Chaudhary } else { 1326065aa1b4SVikas Chaudhary /* ---- link up? --- * 1327065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1328065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1329065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1330065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1331065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1332065aa1b4SVikas Chaudhary 1333065aa1b4SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, 1334065aa1b4SVikas Chaudhary &ha->ddb_list, list) { 1335065aa1b4SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == 1336065aa1b4SVikas Chaudhary DDB_STATE_MISSING) || 1337065aa1b4SVikas Chaudhary (atomic_read(&ddb_entry->state) == 1338065aa1b4SVikas Chaudhary DDB_STATE_DEAD)) { 1339065aa1b4SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 1340065aa1b4SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 1341065aa1b4SVikas Chaudhary atomic_set(&ddb_entry->state, 1342065aa1b4SVikas Chaudhary DDB_STATE_ONLINE); 1343c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 1344065aa1b4SVikas Chaudhary "scsi%ld: %s: ddb[%d]" 1345f4f5df23SVikas Chaudhary " marked ONLINE\n", 1346065aa1b4SVikas Chaudhary ha->host_no, __func__, 1347f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index); 1348065aa1b4SVikas Chaudhary 1349065aa1b4SVikas Chaudhary iscsi_unblock_session( 1350065aa1b4SVikas Chaudhary ddb_entry->sess); 1351065aa1b4SVikas Chaudhary } else 1352065aa1b4SVikas Chaudhary qla4xxx_relogin_device( 1353065aa1b4SVikas Chaudhary ha, ddb_entry); 1354065aa1b4SVikas Chaudhary } 1355065aa1b4SVikas Chaudhary 1356065aa1b4SVikas Chaudhary } 1357065aa1b4SVikas Chaudhary } 1358065aa1b4SVikas Chaudhary } 1359065aa1b4SVikas Chaudhary 1360afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1361afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1362afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1363afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1364afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1365afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1366afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1367afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1368afaf5a2dSDavid Somayajulu 1369afaf5a2dSDavid Somayajulu /* 1370afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1371afaf5a2dSDavid Somayajulu * in continuing further. 1372afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1373afaf5a2dSDavid Somayajulu * the system. 1374afaf5a2dSDavid Somayajulu */ 1375afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1376afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1377afaf5a2dSDavid Somayajulu "need to reset hba\n", 1378afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1379afaf5a2dSDavid Somayajulu break; 1380afaf5a2dSDavid Somayajulu } 1381afaf5a2dSDavid Somayajulu } 1382afaf5a2dSDavid Somayajulu } 13830753b487SVikas Chaudhary 13840753b487SVikas Chaudhary do_dpc_exit: 1385f4f5df23SVikas Chaudhary clear_bit(AF_DPC_SCHEDULED, &ha->flags); 1386afaf5a2dSDavid Somayajulu } 1387afaf5a2dSDavid Somayajulu 1388afaf5a2dSDavid Somayajulu /** 1389afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1390afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1391afaf5a2dSDavid Somayajulu **/ 1392afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1393afaf5a2dSDavid Somayajulu { 1394afaf5a2dSDavid Somayajulu 1395afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1396afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1397f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1398afaf5a2dSDavid Somayajulu } 1399afaf5a2dSDavid Somayajulu 1400afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1401afaf5a2dSDavid Somayajulu if (ha->timer_active) 1402afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1403afaf5a2dSDavid Somayajulu 1404f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1405f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1406f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1407f4f5df23SVikas Chaudhary 1408f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1409f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1410f4f5df23SVikas Chaudhary 1411f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1412f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1413f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1414f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1415f4f5df23SVikas Chaudhary } 1416f4f5df23SVikas Chaudhary 1417afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1418afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1419f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1420afaf5a2dSDavid Somayajulu 1421bee4fe8eSDavid C Somayajulu /* free extra memory */ 1422bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1423f4f5df23SVikas Chaudhary } 1424bee4fe8eSDavid C Somayajulu 1425f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1426f4f5df23SVikas Chaudhary { 1427f4f5df23SVikas Chaudhary int status = 0; 1428f4f5df23SVikas Chaudhary uint8_t revision_id; 1429f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1430f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1431afaf5a2dSDavid Somayajulu 1432f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1433f4f5df23SVikas Chaudhary if (status) { 1434f4f5df23SVikas Chaudhary printk(KERN_WARNING 1435f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1436f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1437f4f5df23SVikas Chaudhary goto iospace_error_exit; 1438f4f5df23SVikas Chaudhary } 1439f4f5df23SVikas Chaudhary 1440f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1441f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1442f4f5df23SVikas Chaudhary __func__, revision_id)); 1443f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1444f4f5df23SVikas Chaudhary 1445f4f5df23SVikas Chaudhary /* remap phys address */ 1446f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1447f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1448f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1449f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1450f4f5df23SVikas Chaudhary 1451f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1452f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1453f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1454f4f5df23SVikas Chaudhary printk(KERN_ERR 1455f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1456f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1457f4f5df23SVikas Chaudhary goto iospace_error_exit; 1458f4f5df23SVikas Chaudhary } 1459f4f5df23SVikas Chaudhary 1460f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1461f4f5df23SVikas Chaudhary 1462f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1463f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1464f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1465f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1466f4f5df23SVikas Chaudhary 1467f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1468f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1469f4f5df23SVikas Chaudhary 14702657c800SShyam Sundar ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : 14712657c800SShyam Sundar QLA82XX_CAM_RAM_DB2); 1472f4f5df23SVikas Chaudhary 14732657c800SShyam Sundar return 0; 1474f4f5df23SVikas Chaudhary iospace_error_exit: 1475f4f5df23SVikas Chaudhary return -ENOMEM; 1476afaf5a2dSDavid Somayajulu } 1477afaf5a2dSDavid Somayajulu 1478afaf5a2dSDavid Somayajulu /*** 1479afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1480afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1481afaf5a2dSDavid Somayajulu * 1482afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1483afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1484afaf5a2dSDavid Somayajulu **/ 1485f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1486afaf5a2dSDavid Somayajulu { 1487afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1488afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1489afaf5a2dSDavid Somayajulu 1490afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1491afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1492afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1493afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1494afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1495c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1496afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1497afaf5a2dSDavid Somayajulu pio = 0; 1498afaf5a2dSDavid Somayajulu } 1499afaf5a2dSDavid Somayajulu } else { 1500c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1501afaf5a2dSDavid Somayajulu pio = 0; 1502afaf5a2dSDavid Somayajulu } 1503afaf5a2dSDavid Somayajulu 1504afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1505afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1506afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1507afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1508afaf5a2dSDavid Somayajulu 1509afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1510c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1511afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1512afaf5a2dSDavid Somayajulu 1513afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1514afaf5a2dSDavid Somayajulu } 1515c2660df3SVikas Chaudhary 1516afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1517c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1518afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1519afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1520afaf5a2dSDavid Somayajulu } 1521afaf5a2dSDavid Somayajulu 1522afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1523c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1524afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1525afaf5a2dSDavid Somayajulu 1526afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1527afaf5a2dSDavid Somayajulu } 1528afaf5a2dSDavid Somayajulu 1529afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1530afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1531afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1532afaf5a2dSDavid Somayajulu if (!ha->reg) { 1533c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1534afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1535afaf5a2dSDavid Somayajulu 1536afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1537afaf5a2dSDavid Somayajulu } 1538afaf5a2dSDavid Somayajulu 1539afaf5a2dSDavid Somayajulu return 0; 1540afaf5a2dSDavid Somayajulu 1541afaf5a2dSDavid Somayajulu iospace_error_exit: 1542afaf5a2dSDavid Somayajulu return -ENOMEM; 1543afaf5a2dSDavid Somayajulu } 1544afaf5a2dSDavid Somayajulu 1545f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1546f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1547f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1548f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1549f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1550f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1551f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1552f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1553f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1554f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1555f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1556f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1557f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1558f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1559f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1560f4f5df23SVikas Chaudhary }; 1561f4f5df23SVikas Chaudhary 1562f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1563f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1564f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1565f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1566f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1567f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1568f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1569f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1570f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1571f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1572f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1573f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1574f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1575f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1576f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1577f4f5df23SVikas Chaudhary }; 1578f4f5df23SVikas Chaudhary 1579f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1580f4f5df23SVikas Chaudhary { 1581f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1582f4f5df23SVikas Chaudhary } 1583f4f5df23SVikas Chaudhary 1584f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1585f4f5df23SVikas Chaudhary { 1586f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1587f4f5df23SVikas Chaudhary } 1588f4f5df23SVikas Chaudhary 1589f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1590f4f5df23SVikas Chaudhary { 1591f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1592f4f5df23SVikas Chaudhary } 1593f4f5df23SVikas Chaudhary 1594f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1595f4f5df23SVikas Chaudhary { 1596f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1597f4f5df23SVikas Chaudhary } 1598f4f5df23SVikas Chaudhary 1599afaf5a2dSDavid Somayajulu /** 1600afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1601afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1602afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1603afaf5a2dSDavid Somayajulu * 1604afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1605afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1606afaf5a2dSDavid Somayajulu * the driver. 1607afaf5a2dSDavid Somayajulu **/ 1608afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1609afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1610afaf5a2dSDavid Somayajulu { 1611afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1612afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1613afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1614afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1615afaf5a2dSDavid Somayajulu char buf[34]; 1616f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1617f9880e76SPrasanna Mumbai uint32_t dev_state; 1618afaf5a2dSDavid Somayajulu 1619afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1620afaf5a2dSDavid Somayajulu return -1; 1621afaf5a2dSDavid Somayajulu 1622afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1623afaf5a2dSDavid Somayajulu if (host == NULL) { 1624afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1625afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1626afaf5a2dSDavid Somayajulu goto probe_disable_device; 1627afaf5a2dSDavid Somayajulu } 1628afaf5a2dSDavid Somayajulu 1629afaf5a2dSDavid Somayajulu /* Clear our data area */ 1630afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1631afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1632afaf5a2dSDavid Somayajulu 1633afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1634afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1635afaf5a2dSDavid Somayajulu ha->host = host; 1636afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1637afaf5a2dSDavid Somayajulu 16382232be0dSLalit Chandivade pci_enable_pcie_error_reporting(pdev); 16392232be0dSLalit Chandivade 1640f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1641f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1642f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1643f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1644f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1645f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1646f4f5df23SVikas Chaudhary ha->curr_window = 255; 1647f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1648f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1649f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1650f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1651f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1652f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1653f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1654f4f5df23SVikas Chaudhary } else { 1655f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1656f4f5df23SVikas Chaudhary } 1657f4f5df23SVikas Chaudhary 16582232be0dSLalit Chandivade /* Set EEH reset type to fundamental if required by hba */ 16592232be0dSLalit Chandivade if (is_qla8022(ha)) 16602232be0dSLalit Chandivade pdev->needs_freset = 1; 16612232be0dSLalit Chandivade 1662afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1663f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1664afaf5a2dSDavid Somayajulu if (ret) 1665f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1666afaf5a2dSDavid Somayajulu 1667c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1668afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1669afaf5a2dSDavid Somayajulu 1670afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1671afaf5a2dSDavid Somayajulu 1672afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1673afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1674afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1675afaf5a2dSDavid Somayajulu 1676afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1677f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1678afaf5a2dSDavid Somayajulu 1679afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1680afaf5a2dSDavid Somayajulu 1681afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1682afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1683c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1684afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1685afaf5a2dSDavid Somayajulu 1686afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1687afaf5a2dSDavid Somayajulu goto probe_failed; 1688afaf5a2dSDavid Somayajulu } 1689afaf5a2dSDavid Somayajulu 1690f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1691f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1692f4f5df23SVikas Chaudhary 1693afaf5a2dSDavid Somayajulu /* 1694afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1695afaf5a2dSDavid Somayajulu * firmware 1696afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1697afaf5a2dSDavid Somayajulu */ 1698afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1699f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1700f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1701f9880e76SPrasanna Mumbai 1702f9880e76SPrasanna Mumbai if (is_qla8022(ha)) { 1703f9880e76SPrasanna Mumbai qla4_8xxx_idc_lock(ha); 1704f9880e76SPrasanna Mumbai dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 1705f9880e76SPrasanna Mumbai qla4_8xxx_idc_unlock(ha); 1706f9880e76SPrasanna Mumbai if (dev_state == QLA82XX_DEV_FAILED) { 1707f9880e76SPrasanna Mumbai ql4_printk(KERN_WARNING, ha, "%s: don't retry " 1708f9880e76SPrasanna Mumbai "initialize adapter. H/W is in failed state\n", 1709f9880e76SPrasanna Mumbai __func__); 1710f9880e76SPrasanna Mumbai break; 1711f9880e76SPrasanna Mumbai } 1712f9880e76SPrasanna Mumbai } 1713afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1714afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1715f4f5df23SVikas Chaudhary 1716f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 1717f4f5df23SVikas Chaudhary continue; 1718f4f5df23SVikas Chaudhary 1719afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1720afaf5a2dSDavid Somayajulu } 1721f4f5df23SVikas Chaudhary 1722f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 1723c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 1724afaf5a2dSDavid Somayajulu 1725fe998527SLalit Chandivade if (is_qla8022(ha) && ql4xdontresethba) { 1726fe998527SLalit Chandivade /* Put the device in failed state. */ 1727fe998527SLalit Chandivade DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); 1728fe998527SLalit Chandivade qla4_8xxx_idc_lock(ha); 1729fe998527SLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1730fe998527SLalit Chandivade QLA82XX_DEV_FAILED); 1731fe998527SLalit Chandivade qla4_8xxx_idc_unlock(ha); 1732fe998527SLalit Chandivade } 1733afaf5a2dSDavid Somayajulu ret = -ENODEV; 1734afaf5a2dSDavid Somayajulu goto probe_failed; 1735afaf5a2dSDavid Somayajulu } 1736afaf5a2dSDavid Somayajulu 1737afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1738afaf5a2dSDavid Somayajulu host->max_channel = 0; 1739afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1740afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1741afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1742afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1743afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1744afaf5a2dSDavid Somayajulu 1745afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1746afaf5a2dSDavid Somayajulu if (ret) { 1747c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1748c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 1749afaf5a2dSDavid Somayajulu goto probe_failed; 1750afaf5a2dSDavid Somayajulu } 1751afaf5a2dSDavid Somayajulu 1752afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1753afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1754afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1755afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1756afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1757afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1758c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 1759afaf5a2dSDavid Somayajulu ret = -ENODEV; 1760afaf5a2dSDavid Somayajulu goto probe_failed; 1761afaf5a2dSDavid Somayajulu } 1762c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1763afaf5a2dSDavid Somayajulu 1764f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 1765f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 1766f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 1767f4f5df23SVikas Chaudhary * mbx_intr_enable. 1768f4f5df23SVikas Chaudhary */ 1769f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1770f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 1771afaf5a2dSDavid Somayajulu if (ret) { 1772f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 1773f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 1774afaf5a2dSDavid Somayajulu goto probe_failed; 1775afaf5a2dSDavid Somayajulu } 1776f4f5df23SVikas Chaudhary } 1777afaf5a2dSDavid Somayajulu 17782232be0dSLalit Chandivade pci_save_state(ha->pdev); 1779f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1780afaf5a2dSDavid Somayajulu 1781afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1782afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1783afaf5a2dSDavid Somayajulu 1784afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1785afaf5a2dSDavid Somayajulu 1786afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1787afaf5a2dSDavid Somayajulu 1788afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1789afaf5a2dSDavid Somayajulu if (ret) 1790afaf5a2dSDavid Somayajulu goto probe_failed; 1791afaf5a2dSDavid Somayajulu 1792afaf5a2dSDavid Somayajulu printk(KERN_INFO 1793afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1794afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1795afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1796afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1797afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1798921601b7SMike Christie scsi_scan_host(host); 1799afaf5a2dSDavid Somayajulu return 0; 1800afaf5a2dSDavid Somayajulu 1801afaf5a2dSDavid Somayajulu probe_failed: 1802afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1803f4f5df23SVikas Chaudhary 1804f4f5df23SVikas Chaudhary probe_failed_ioconfig: 18052232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1806afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1807afaf5a2dSDavid Somayajulu 1808afaf5a2dSDavid Somayajulu probe_disable_device: 1809afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1810afaf5a2dSDavid Somayajulu 1811afaf5a2dSDavid Somayajulu return ret; 1812afaf5a2dSDavid Somayajulu } 1813afaf5a2dSDavid Somayajulu 1814afaf5a2dSDavid Somayajulu /** 18157eece5a0SKaren Higgins * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize 18167eece5a0SKaren Higgins * @ha: pointer to adapter structure 18177eece5a0SKaren Higgins * 18187eece5a0SKaren Higgins * Mark the other ISP-4xxx port to indicate that the driver is being removed, 18197eece5a0SKaren Higgins * so that the other port will not re-initialize while in the process of 18207eece5a0SKaren Higgins * removing the ha due to driver unload or hba hotplug. 18217eece5a0SKaren Higgins **/ 18227eece5a0SKaren Higgins static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) 18237eece5a0SKaren Higgins { 18247eece5a0SKaren Higgins struct scsi_qla_host *other_ha = NULL; 18257eece5a0SKaren Higgins struct pci_dev *other_pdev = NULL; 18267eece5a0SKaren Higgins int fn = ISP4XXX_PCI_FN_2; 18277eece5a0SKaren Higgins 18287eece5a0SKaren Higgins /*iscsi function numbers for ISP4xxx is 1 and 3*/ 18297eece5a0SKaren Higgins if (PCI_FUNC(ha->pdev->devfn) & BIT_1) 18307eece5a0SKaren Higgins fn = ISP4XXX_PCI_FN_1; 18317eece5a0SKaren Higgins 18327eece5a0SKaren Higgins other_pdev = 18337eece5a0SKaren Higgins pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 18347eece5a0SKaren Higgins ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 18357eece5a0SKaren Higgins fn)); 18367eece5a0SKaren Higgins 18377eece5a0SKaren Higgins /* Get other_ha if other_pdev is valid and state is enable*/ 18387eece5a0SKaren Higgins if (other_pdev) { 18397eece5a0SKaren Higgins if (atomic_read(&other_pdev->enable_cnt)) { 18407eece5a0SKaren Higgins other_ha = pci_get_drvdata(other_pdev); 18417eece5a0SKaren Higgins if (other_ha) { 18427eece5a0SKaren Higgins set_bit(AF_HA_REMOVAL, &other_ha->flags); 18437eece5a0SKaren Higgins DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " 18447eece5a0SKaren Higgins "Prevent %s reinit\n", __func__, 18457eece5a0SKaren Higgins dev_name(&other_ha->pdev->dev))); 18467eece5a0SKaren Higgins } 18477eece5a0SKaren Higgins } 18487eece5a0SKaren Higgins pci_dev_put(other_pdev); 18497eece5a0SKaren Higgins } 18507eece5a0SKaren Higgins } 18517eece5a0SKaren Higgins 18527eece5a0SKaren Higgins /** 1853afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1854afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1855afaf5a2dSDavid Somayajulu **/ 1856afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1857afaf5a2dSDavid Somayajulu { 1858afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1859afaf5a2dSDavid Somayajulu 1860afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1861afaf5a2dSDavid Somayajulu 18627eece5a0SKaren Higgins if (!is_qla8022(ha)) 18637eece5a0SKaren Higgins qla4xxx_prevent_other_port_reinit(ha); 1864bee4fe8eSDavid C Somayajulu 1865afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1866afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1867afaf5a2dSDavid Somayajulu 1868afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1869afaf5a2dSDavid Somayajulu 1870afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1871afaf5a2dSDavid Somayajulu 1872afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1873afaf5a2dSDavid Somayajulu 18742232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1875f4f5df23SVikas Chaudhary pci_disable_device(pdev); 1876afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1877afaf5a2dSDavid Somayajulu } 1878afaf5a2dSDavid Somayajulu 1879afaf5a2dSDavid Somayajulu /** 1880afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1881afaf5a2dSDavid Somayajulu * @ha: HA context 1882afaf5a2dSDavid Somayajulu * 1883afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1884afaf5a2dSDavid Somayajulu * supported addressing method. 1885afaf5a2dSDavid Somayajulu */ 188647975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1887afaf5a2dSDavid Somayajulu { 1888afaf5a2dSDavid Somayajulu int retval; 1889afaf5a2dSDavid Somayajulu 1890afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 18916a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 18926a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1893afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1894afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1895afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1896afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1897284901a9SYang Hongyang DMA_BIT_MASK(32)); 1898afaf5a2dSDavid Somayajulu } 1899afaf5a2dSDavid Somayajulu } else 1900284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1901afaf5a2dSDavid Somayajulu } 1902afaf5a2dSDavid Somayajulu 1903afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1904afaf5a2dSDavid Somayajulu { 1905afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1906afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 1907afaf5a2dSDavid Somayajulu 1908afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1909afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1910d510d965SMike Christie scsi_activate_tcq(sdev, QL4_DEF_QDEPTH); 1911afaf5a2dSDavid Somayajulu return 0; 1912afaf5a2dSDavid Somayajulu } 1913afaf5a2dSDavid Somayajulu 1914afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1915afaf5a2dSDavid Somayajulu { 1916afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1917afaf5a2dSDavid Somayajulu return 0; 1918afaf5a2dSDavid Somayajulu } 1919afaf5a2dSDavid Somayajulu 1920afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1921afaf5a2dSDavid Somayajulu { 1922afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1923afaf5a2dSDavid Somayajulu } 1924afaf5a2dSDavid Somayajulu 1925afaf5a2dSDavid Somayajulu /** 1926afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1927afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1928fd589a8fSAnand Gadiyar * @index: index into the active_array 1929afaf5a2dSDavid Somayajulu * 1930afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1931afaf5a2dSDavid Somayajulu **/ 1932f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 1933f4f5df23SVikas Chaudhary uint32_t index) 1934afaf5a2dSDavid Somayajulu { 1935afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 19365369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 1937afaf5a2dSDavid Somayajulu 19385369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 19395369887aSVikas Chaudhary if (!cmd) 1940afaf5a2dSDavid Somayajulu return srb; 1941afaf5a2dSDavid Somayajulu 19425369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 19435369887aSVikas Chaudhary if (!srb) 1944afaf5a2dSDavid Somayajulu return srb; 1945afaf5a2dSDavid Somayajulu 1946afaf5a2dSDavid Somayajulu /* update counters */ 1947afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1948afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1949afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1950afaf5a2dSDavid Somayajulu if (srb->cmd) 19515369887aSVikas Chaudhary srb->cmd->host_scribble = 19525369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 1953afaf5a2dSDavid Somayajulu } 1954afaf5a2dSDavid Somayajulu return srb; 1955afaf5a2dSDavid Somayajulu } 1956afaf5a2dSDavid Somayajulu 1957afaf5a2dSDavid Somayajulu /** 1958afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 195909a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 1960afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1961afaf5a2dSDavid Somayajulu * 1962afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1963afaf5a2dSDavid Somayajulu * for some max time. 1964afaf5a2dSDavid Somayajulu **/ 1965afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1966afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1967afaf5a2dSDavid Somayajulu { 1968afaf5a2dSDavid Somayajulu int done = 0; 1969afaf5a2dSDavid Somayajulu struct srb *rp; 1970afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 19712232be0dSLalit Chandivade int ret = SUCCESS; 19722232be0dSLalit Chandivade 19732232be0dSLalit Chandivade /* Dont wait on command if PCI error is being handled 19742232be0dSLalit Chandivade * by PCI AER driver 19752232be0dSLalit Chandivade */ 19762232be0dSLalit Chandivade if (unlikely(pci_channel_offline(ha->pdev)) || 19772232be0dSLalit Chandivade (test_bit(AF_EEH_BUSY, &ha->flags))) { 19782232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", 19792232be0dSLalit Chandivade ha->host_no, __func__); 19802232be0dSLalit Chandivade return ret; 19812232be0dSLalit Chandivade } 1982afaf5a2dSDavid Somayajulu 1983afaf5a2dSDavid Somayajulu do { 1984afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 19855369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 1986afaf5a2dSDavid Somayajulu if (rp == NULL) { 1987afaf5a2dSDavid Somayajulu done++; 1988afaf5a2dSDavid Somayajulu break; 1989afaf5a2dSDavid Somayajulu } 1990afaf5a2dSDavid Somayajulu 1991afaf5a2dSDavid Somayajulu msleep(2000); 1992afaf5a2dSDavid Somayajulu } while (max_wait_time--); 1993afaf5a2dSDavid Somayajulu 1994afaf5a2dSDavid Somayajulu return done; 1995afaf5a2dSDavid Somayajulu } 1996afaf5a2dSDavid Somayajulu 1997afaf5a2dSDavid Somayajulu /** 1998afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 1999afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 2000afaf5a2dSDavid Somayajulu **/ 2001afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 2002afaf5a2dSDavid Somayajulu { 2003afaf5a2dSDavid Somayajulu unsigned long wait_online; 2004afaf5a2dSDavid Somayajulu 2005f581a3f7SVikas Chaudhary wait_online = jiffies + (HBA_ONLINE_TOV * HZ); 2006afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 2007afaf5a2dSDavid Somayajulu 2008afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 2009afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 2010afaf5a2dSDavid Somayajulu 2011afaf5a2dSDavid Somayajulu msleep(2000); 2012afaf5a2dSDavid Somayajulu } 2013afaf5a2dSDavid Somayajulu 2014afaf5a2dSDavid Somayajulu return QLA_ERROR; 2015afaf5a2dSDavid Somayajulu } 2016afaf5a2dSDavid Somayajulu 2017afaf5a2dSDavid Somayajulu /** 2018ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 2019fd589a8fSAnand Gadiyar * @ha: pointer to HBA 2020afaf5a2dSDavid Somayajulu * @t: target id 2021afaf5a2dSDavid Somayajulu * @l: lun id 2022afaf5a2dSDavid Somayajulu * 2023afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 2024afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 2025afaf5a2dSDavid Somayajulu **/ 2026ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 2027ce545039SMike Christie struct scsi_target *stgt, 2028ce545039SMike Christie struct scsi_device *sdev) 2029afaf5a2dSDavid Somayajulu { 2030afaf5a2dSDavid Somayajulu int cnt; 2031afaf5a2dSDavid Somayajulu int status = 0; 2032afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 2033afaf5a2dSDavid Somayajulu 2034afaf5a2dSDavid Somayajulu /* 2035ce545039SMike Christie * Waiting for all commands for the designated target or dev 2036ce545039SMike Christie * in the active array 2037afaf5a2dSDavid Somayajulu */ 2038afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 2039afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 2040ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 2041ce545039SMike Christie (!sdev || sdev == cmd->device)) { 2042afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 2043afaf5a2dSDavid Somayajulu status++; 2044afaf5a2dSDavid Somayajulu break; 2045afaf5a2dSDavid Somayajulu } 2046afaf5a2dSDavid Somayajulu } 2047afaf5a2dSDavid Somayajulu } 2048afaf5a2dSDavid Somayajulu return status; 2049afaf5a2dSDavid Somayajulu } 2050afaf5a2dSDavid Somayajulu 2051afaf5a2dSDavid Somayajulu /** 205209a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 205309a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 205409a0f719SVikas Chaudhary * 205509a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 205609a0f719SVikas Chaudhary * command. 205709a0f719SVikas Chaudhary **/ 205809a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 205909a0f719SVikas Chaudhary { 206009a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 206109a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 206209a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 206309a0f719SVikas Chaudhary unsigned long serial = cmd->serial_number; 206492b3e5bbSMike Christie unsigned long flags; 206509a0f719SVikas Chaudhary struct srb *srb = NULL; 206609a0f719SVikas Chaudhary int ret = SUCCESS; 206709a0f719SVikas Chaudhary int wait = 0; 206809a0f719SVikas Chaudhary 2069c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 207009a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", 207109a0f719SVikas Chaudhary ha->host_no, id, lun, cmd, serial); 207209a0f719SVikas Chaudhary 207392b3e5bbSMike Christie spin_lock_irqsave(&ha->hardware_lock, flags); 207409a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 207592b3e5bbSMike Christie if (!srb) { 207692b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 207709a0f719SVikas Chaudhary return SUCCESS; 207892b3e5bbSMike Christie } 207909a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 208092b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 208109a0f719SVikas Chaudhary 208209a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 208309a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 208409a0f719SVikas Chaudhary ha->host_no, id, lun)); 208509a0f719SVikas Chaudhary ret = FAILED; 208609a0f719SVikas Chaudhary } else { 208709a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 208809a0f719SVikas Chaudhary ha->host_no, id, lun)); 208909a0f719SVikas Chaudhary wait = 1; 209009a0f719SVikas Chaudhary } 209109a0f719SVikas Chaudhary 209209a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 209309a0f719SVikas Chaudhary 209409a0f719SVikas Chaudhary /* Wait for command to complete */ 209509a0f719SVikas Chaudhary if (wait) { 209609a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 209709a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 209809a0f719SVikas Chaudhary ha->host_no, id, lun)); 209909a0f719SVikas Chaudhary ret = FAILED; 210009a0f719SVikas Chaudhary } 210109a0f719SVikas Chaudhary } 210209a0f719SVikas Chaudhary 2103c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 210409a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 210509a0f719SVikas Chaudhary ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); 210609a0f719SVikas Chaudhary 210709a0f719SVikas Chaudhary return ret; 210809a0f719SVikas Chaudhary } 210909a0f719SVikas Chaudhary 211009a0f719SVikas Chaudhary /** 2111afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2112afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2113afaf5a2dSDavid Somayajulu * 2114afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2115afaf5a2dSDavid Somayajulu * specified target. 2116afaf5a2dSDavid Somayajulu **/ 2117afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2118afaf5a2dSDavid Somayajulu { 2119afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2120afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2121afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2122afaf5a2dSDavid Somayajulu 2123612f7348SKaren Higgins if (!ddb_entry) 2124afaf5a2dSDavid Somayajulu return ret; 2125afaf5a2dSDavid Somayajulu 2126c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2127c01be6dcSMike Christie if (ret) 2128c01be6dcSMike Christie return ret; 2129c01be6dcSMike Christie ret = FAILED; 2130c01be6dcSMike Christie 2131c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2132afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2133afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2134afaf5a2dSDavid Somayajulu 2135afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2136afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2137afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2138242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2139afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2140afaf5a2dSDavid Somayajulu 2141afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2142afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2143afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2144c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2145afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2146afaf5a2dSDavid Somayajulu } 2147afaf5a2dSDavid Somayajulu 2148ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2149ce545039SMike Christie cmd->device)) { 2150c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2151afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2152afaf5a2dSDavid Somayajulu "commands.\n"); 2153afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2154afaf5a2dSDavid Somayajulu } 2155afaf5a2dSDavid Somayajulu 21569d562913SDavid C Somayajulu /* Send marker. */ 21579d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21589d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 21599d562913SDavid C Somayajulu goto eh_dev_reset_done; 21609d562913SDavid C Somayajulu 2161c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2162afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2163afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2164afaf5a2dSDavid Somayajulu cmd->device->lun); 2165afaf5a2dSDavid Somayajulu 2166afaf5a2dSDavid Somayajulu ret = SUCCESS; 2167afaf5a2dSDavid Somayajulu 2168afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2169afaf5a2dSDavid Somayajulu 2170afaf5a2dSDavid Somayajulu return ret; 2171afaf5a2dSDavid Somayajulu } 2172afaf5a2dSDavid Somayajulu 2173afaf5a2dSDavid Somayajulu /** 2174ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2175ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2176ce545039SMike Christie * 2177ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2178ce545039SMike Christie **/ 2179ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2180ce545039SMike Christie { 2181ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2182ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2183c01be6dcSMike Christie int stat, ret; 2184ce545039SMike Christie 2185ce545039SMike Christie if (!ddb_entry) 2186ce545039SMike Christie return FAILED; 2187ce545039SMike Christie 2188c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2189c01be6dcSMike Christie if (ret) 2190c01be6dcSMike Christie return ret; 2191c01be6dcSMike Christie 2192ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2193ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2194ce545039SMike Christie 2195ce545039SMike Christie DEBUG2(printk(KERN_INFO 2196ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2197ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2198242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2199ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2200ce545039SMike Christie 2201ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2202ce545039SMike Christie if (stat != QLA_SUCCESS) { 2203ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2204ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2205ce545039SMike Christie return FAILED; 2206ce545039SMike Christie } 2207ce545039SMike Christie 2208ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2209ce545039SMike Christie NULL)) { 2210ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2211ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2212ce545039SMike Christie "waiting for commands.\n"); 2213ce545039SMike Christie return FAILED; 2214ce545039SMike Christie } 2215ce545039SMike Christie 22169d562913SDavid C Somayajulu /* Send marker. */ 22179d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 22189d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 22199d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 22209d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 22219d562913SDavid C Somayajulu "marker iocb failed.\n"); 22229d562913SDavid C Somayajulu return FAILED; 22239d562913SDavid C Somayajulu } 22249d562913SDavid C Somayajulu 2225ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2226ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2227ce545039SMike Christie return SUCCESS; 2228ce545039SMike Christie } 2229ce545039SMike Christie 2230ce545039SMike Christie /** 2231afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2232afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2233afaf5a2dSDavid Somayajulu * 2234afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2235afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2236afaf5a2dSDavid Somayajulu **/ 2237afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2238afaf5a2dSDavid Somayajulu { 2239afaf5a2dSDavid Somayajulu int return_status = FAILED; 2240afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2241afaf5a2dSDavid Somayajulu 2242afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2243afaf5a2dSDavid Somayajulu 2244f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2245f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2246f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2247f4f5df23SVikas Chaudhary return FAILED; 2248f4f5df23SVikas Chaudhary } 2249f4f5df23SVikas Chaudhary 2250c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2251dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2252afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2253afaf5a2dSDavid Somayajulu 2254afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2255afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2256afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2257afaf5a2dSDavid Somayajulu __func__)); 2258afaf5a2dSDavid Somayajulu 2259afaf5a2dSDavid Somayajulu return FAILED; 2260afaf5a2dSDavid Somayajulu } 2261afaf5a2dSDavid Somayajulu 2262f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2263f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2264f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2265f4f5df23SVikas Chaudhary else 2266f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2267f4f5df23SVikas Chaudhary } 226850a29aecSMike Christie 2269f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2270afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2271afaf5a2dSDavid Somayajulu 2272c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 2273afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 2274afaf5a2dSDavid Somayajulu 2275afaf5a2dSDavid Somayajulu return return_status; 2276afaf5a2dSDavid Somayajulu } 2277afaf5a2dSDavid Somayajulu 22782232be0dSLalit Chandivade /* PCI AER driver recovers from all correctable errors w/o 22792232be0dSLalit Chandivade * driver intervention. For uncorrectable errors PCI AER 22802232be0dSLalit Chandivade * driver calls the following device driver's callbacks 22812232be0dSLalit Chandivade * 22822232be0dSLalit Chandivade * - Fatal Errors - link_reset 22832232be0dSLalit Chandivade * - Non-Fatal Errors - driver's pci_error_detected() which 22842232be0dSLalit Chandivade * returns CAN_RECOVER, NEED_RESET or DISCONNECT. 22852232be0dSLalit Chandivade * 22862232be0dSLalit Chandivade * PCI AER driver calls 22872232be0dSLalit Chandivade * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled 22882232be0dSLalit Chandivade * returns RECOVERED or NEED_RESET if fw_hung 22892232be0dSLalit Chandivade * NEED_RESET - driver's slot_reset() 22902232be0dSLalit Chandivade * DISCONNECT - device is dead & cannot recover 22912232be0dSLalit Chandivade * RECOVERED - driver's pci_resume() 22922232be0dSLalit Chandivade */ 22932232be0dSLalit Chandivade static pci_ers_result_t 22942232be0dSLalit Chandivade qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 22952232be0dSLalit Chandivade { 22962232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 22972232be0dSLalit Chandivade 22982232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", 22992232be0dSLalit Chandivade ha->host_no, __func__, state); 23002232be0dSLalit Chandivade 23012232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23022232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23032232be0dSLalit Chandivade 23042232be0dSLalit Chandivade switch (state) { 23052232be0dSLalit Chandivade case pci_channel_io_normal: 23062232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 23072232be0dSLalit Chandivade return PCI_ERS_RESULT_CAN_RECOVER; 23082232be0dSLalit Chandivade case pci_channel_io_frozen: 23092232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23102232be0dSLalit Chandivade qla4xxx_mailbox_premature_completion(ha); 23112232be0dSLalit Chandivade qla4xxx_free_irqs(ha); 23122232be0dSLalit Chandivade pci_disable_device(pdev); 23137b3595dfSVikas Chaudhary /* Return back all IOs */ 23147b3595dfSVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 23152232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23162232be0dSLalit Chandivade case pci_channel_io_perm_failure: 23172232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23182232be0dSLalit Chandivade set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); 23192232be0dSLalit Chandivade qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 23202232be0dSLalit Chandivade return PCI_ERS_RESULT_DISCONNECT; 23212232be0dSLalit Chandivade } 23222232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23232232be0dSLalit Chandivade } 23242232be0dSLalit Chandivade 23252232be0dSLalit Chandivade /** 23262232be0dSLalit Chandivade * qla4xxx_pci_mmio_enabled() gets called if 23272232be0dSLalit Chandivade * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER 23282232be0dSLalit Chandivade * and read/write to the device still works. 23292232be0dSLalit Chandivade **/ 23302232be0dSLalit Chandivade static pci_ers_result_t 23312232be0dSLalit Chandivade qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) 23322232be0dSLalit Chandivade { 23332232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 23342232be0dSLalit Chandivade 23352232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23362232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23372232be0dSLalit Chandivade 23382232be0dSLalit Chandivade return PCI_ERS_RESULT_RECOVERED; 23392232be0dSLalit Chandivade } 23402232be0dSLalit Chandivade 23417b3595dfSVikas Chaudhary static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) 23422232be0dSLalit Chandivade { 23432232be0dSLalit Chandivade uint32_t rval = QLA_ERROR; 23447b3595dfSVikas Chaudhary uint32_t ret = 0; 23452232be0dSLalit Chandivade int fn; 23462232be0dSLalit Chandivade struct pci_dev *other_pdev = NULL; 23472232be0dSLalit Chandivade 23482232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); 23492232be0dSLalit Chandivade 23502232be0dSLalit Chandivade set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 23512232be0dSLalit Chandivade 23522232be0dSLalit Chandivade if (test_bit(AF_ONLINE, &ha->flags)) { 23532232be0dSLalit Chandivade clear_bit(AF_ONLINE, &ha->flags); 23542232be0dSLalit Chandivade qla4xxx_mark_all_devices_missing(ha); 23552232be0dSLalit Chandivade qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 23562232be0dSLalit Chandivade } 23572232be0dSLalit Chandivade 23582232be0dSLalit Chandivade fn = PCI_FUNC(ha->pdev->devfn); 23592232be0dSLalit Chandivade while (fn > 0) { 23602232be0dSLalit Chandivade fn--; 23612232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " 23622232be0dSLalit Chandivade "func %x\n", ha->host_no, __func__, fn); 23632232be0dSLalit Chandivade /* Get the pci device given the domain, bus, 23642232be0dSLalit Chandivade * slot/function number */ 23652232be0dSLalit Chandivade other_pdev = 23662232be0dSLalit Chandivade pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 23672232be0dSLalit Chandivade ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 23682232be0dSLalit Chandivade fn)); 23692232be0dSLalit Chandivade 23702232be0dSLalit Chandivade if (!other_pdev) 23712232be0dSLalit Chandivade continue; 23722232be0dSLalit Chandivade 23732232be0dSLalit Chandivade if (atomic_read(&other_pdev->enable_cnt)) { 23742232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " 23752232be0dSLalit Chandivade "func in enabled state%x\n", ha->host_no, 23762232be0dSLalit Chandivade __func__, fn); 23772232be0dSLalit Chandivade pci_dev_put(other_pdev); 23782232be0dSLalit Chandivade break; 23792232be0dSLalit Chandivade } 23802232be0dSLalit Chandivade pci_dev_put(other_pdev); 23812232be0dSLalit Chandivade } 23822232be0dSLalit Chandivade 23832232be0dSLalit Chandivade /* The first function on the card, the reset owner will 23842232be0dSLalit Chandivade * start & initialize the firmware. The other functions 23852232be0dSLalit Chandivade * on the card will reset the firmware context 23862232be0dSLalit Chandivade */ 23872232be0dSLalit Chandivade if (!fn) { 23882232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " 23892232be0dSLalit Chandivade "0x%x is the owner\n", ha->host_no, __func__, 23902232be0dSLalit Chandivade ha->pdev->devfn); 23912232be0dSLalit Chandivade 23922232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 23932232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 23942232be0dSLalit Chandivade QLA82XX_DEV_COLD); 23952232be0dSLalit Chandivade 23962232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, 23972232be0dSLalit Chandivade QLA82XX_IDC_VERSION); 23982232be0dSLalit Chandivade 23992232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24002232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24012232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 24022232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24032232be0dSLalit Chandivade 24042232be0dSLalit Chandivade if (rval != QLA_SUCCESS) { 24052232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24062232be0dSLalit Chandivade "FAILED\n", ha->host_no, __func__); 24072232be0dSLalit Chandivade qla4_8xxx_clear_drv_active(ha); 24082232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24092232be0dSLalit Chandivade QLA82XX_DEV_FAILED); 24102232be0dSLalit Chandivade } else { 24112232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24122232be0dSLalit Chandivade "READY\n", ha->host_no, __func__); 24132232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24142232be0dSLalit Chandivade QLA82XX_DEV_READY); 24152232be0dSLalit Chandivade /* Clear driver state register */ 24162232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); 24172232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24187b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24197b3595dfSVikas Chaudhary if (ret) { 24207b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to " 24217b3595dfSVikas Chaudhary "reserve interrupt %d already in use.\n", 24227b3595dfSVikas Chaudhary ha->pdev->irq); 24237b3595dfSVikas Chaudhary rval = QLA_ERROR; 24247b3595dfSVikas Chaudhary } else { 24252232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24267b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24277b3595dfSVikas Chaudhary } 24282232be0dSLalit Chandivade } 24292232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24302232be0dSLalit Chandivade } else { 24312232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " 24322232be0dSLalit Chandivade "the reset owner\n", ha->host_no, __func__, 24332232be0dSLalit Chandivade ha->pdev->devfn); 24342232be0dSLalit Chandivade if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == 24352232be0dSLalit Chandivade QLA82XX_DEV_READY)) { 24362232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24372232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, 24382232be0dSLalit Chandivade PRESERVE_DDB_LIST); 24397b3595dfSVikas Chaudhary if (rval == QLA_SUCCESS) { 24407b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24417b3595dfSVikas Chaudhary if (ret) { 24427b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to" 24437b3595dfSVikas Chaudhary " reserve interrupt %d already in" 24447b3595dfSVikas Chaudhary " use.\n", ha->pdev->irq); 24457b3595dfSVikas Chaudhary rval = QLA_ERROR; 24467b3595dfSVikas Chaudhary } else { 24472232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24487b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24497b3595dfSVikas Chaudhary } 24507b3595dfSVikas Chaudhary } 24512232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24522232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24532232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24542232be0dSLalit Chandivade } 24552232be0dSLalit Chandivade } 24562232be0dSLalit Chandivade clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 24572232be0dSLalit Chandivade return rval; 24582232be0dSLalit Chandivade } 24592232be0dSLalit Chandivade 24602232be0dSLalit Chandivade static pci_ers_result_t 24612232be0dSLalit Chandivade qla4xxx_pci_slot_reset(struct pci_dev *pdev) 24622232be0dSLalit Chandivade { 24632232be0dSLalit Chandivade pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; 24642232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 24652232be0dSLalit Chandivade int rc; 24662232be0dSLalit Chandivade 24672232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", 24682232be0dSLalit Chandivade ha->host_no, __func__); 24692232be0dSLalit Chandivade 24702232be0dSLalit Chandivade if (!is_aer_supported(ha)) 24712232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 24722232be0dSLalit Chandivade 24732232be0dSLalit Chandivade /* Restore the saved state of PCIe device - 24742232be0dSLalit Chandivade * BAR registers, PCI Config space, PCIX, MSI, 24752232be0dSLalit Chandivade * IOV states 24762232be0dSLalit Chandivade */ 24772232be0dSLalit Chandivade pci_restore_state(pdev); 24782232be0dSLalit Chandivade 24792232be0dSLalit Chandivade /* pci_restore_state() clears the saved_state flag of the device 24802232be0dSLalit Chandivade * save restored state which resets saved_state flag 24812232be0dSLalit Chandivade */ 24822232be0dSLalit Chandivade pci_save_state(pdev); 24832232be0dSLalit Chandivade 24842232be0dSLalit Chandivade /* Initialize device or resume if in suspended state */ 24852232be0dSLalit Chandivade rc = pci_enable_device(pdev); 24862232be0dSLalit Chandivade if (rc) { 24872232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable " 24882232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__); 24892232be0dSLalit Chandivade goto exit_slot_reset; 24902232be0dSLalit Chandivade } 24912232be0dSLalit Chandivade 24927b3595dfSVikas Chaudhary ha->isp_ops->disable_intrs(ha); 24932232be0dSLalit Chandivade 24942232be0dSLalit Chandivade if (is_qla8022(ha)) { 24952232be0dSLalit Chandivade if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { 24962232be0dSLalit Chandivade ret = PCI_ERS_RESULT_RECOVERED; 24972232be0dSLalit Chandivade goto exit_slot_reset; 24982232be0dSLalit Chandivade } else 24992232be0dSLalit Chandivade goto exit_slot_reset; 25002232be0dSLalit Chandivade } 25012232be0dSLalit Chandivade 25022232be0dSLalit Chandivade exit_slot_reset: 25032232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" 25042232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__, ret); 25052232be0dSLalit Chandivade return ret; 25062232be0dSLalit Chandivade } 25072232be0dSLalit Chandivade 25082232be0dSLalit Chandivade static void 25092232be0dSLalit Chandivade qla4xxx_pci_resume(struct pci_dev *pdev) 25102232be0dSLalit Chandivade { 25112232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 25122232be0dSLalit Chandivade int ret; 25132232be0dSLalit Chandivade 25142232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", 25152232be0dSLalit Chandivade ha->host_no, __func__); 25162232be0dSLalit Chandivade 25172232be0dSLalit Chandivade ret = qla4xxx_wait_for_hba_online(ha); 25182232be0dSLalit Chandivade if (ret != QLA_SUCCESS) { 25192232be0dSLalit Chandivade ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " 25202232be0dSLalit Chandivade "resume I/O from slot/link_reset\n", ha->host_no, 25212232be0dSLalit Chandivade __func__); 25222232be0dSLalit Chandivade } 25232232be0dSLalit Chandivade 25242232be0dSLalit Chandivade pci_cleanup_aer_uncorrect_error_status(pdev); 25252232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 25262232be0dSLalit Chandivade } 25272232be0dSLalit Chandivade 25282232be0dSLalit Chandivade static struct pci_error_handlers qla4xxx_err_handler = { 25292232be0dSLalit Chandivade .error_detected = qla4xxx_pci_error_detected, 25302232be0dSLalit Chandivade .mmio_enabled = qla4xxx_pci_mmio_enabled, 25312232be0dSLalit Chandivade .slot_reset = qla4xxx_pci_slot_reset, 25322232be0dSLalit Chandivade .resume = qla4xxx_pci_resume, 25332232be0dSLalit Chandivade }; 25342232be0dSLalit Chandivade 2535afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2536afaf5a2dSDavid Somayajulu { 2537afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2538afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2539afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2540afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2541afaf5a2dSDavid Somayajulu }, 2542afaf5a2dSDavid Somayajulu { 2543afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2544afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2545afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2546afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2547afaf5a2dSDavid Somayajulu }, 2548d915058fSDavid C Somayajulu { 2549d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2550d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2551d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2552d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2553d915058fSDavid C Somayajulu }, 2554f4f5df23SVikas Chaudhary { 2555f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2556f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2557f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2558f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2559f4f5df23SVikas Chaudhary }, 2560afaf5a2dSDavid Somayajulu {0, 0}, 2561afaf5a2dSDavid Somayajulu }; 2562afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2563afaf5a2dSDavid Somayajulu 256447975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2565afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2566afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2567afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2568afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 25692232be0dSLalit Chandivade .err_handler = &qla4xxx_err_handler, 2570afaf5a2dSDavid Somayajulu }; 2571afaf5a2dSDavid Somayajulu 2572afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2573afaf5a2dSDavid Somayajulu { 2574afaf5a2dSDavid Somayajulu int ret; 2575afaf5a2dSDavid Somayajulu 2576afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2577afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 257820c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2579afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2580afaf5a2dSDavid Somayajulu printk(KERN_ERR 2581afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2582afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2583afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2584afaf5a2dSDavid Somayajulu goto no_srp_cache; 2585afaf5a2dSDavid Somayajulu } 2586afaf5a2dSDavid Somayajulu 2587afaf5a2dSDavid Somayajulu /* Derive version string. */ 2588afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 258911010fecSAndrew Vasquez if (ql4xextended_error_logging) 2590afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2591afaf5a2dSDavid Somayajulu 2592afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2593afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2594afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2595afaf5a2dSDavid Somayajulu ret = -ENODEV; 2596afaf5a2dSDavid Somayajulu goto release_srb_cache; 2597afaf5a2dSDavid Somayajulu } 2598afaf5a2dSDavid Somayajulu 2599afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2600afaf5a2dSDavid Somayajulu if (ret) 2601afaf5a2dSDavid Somayajulu goto unregister_transport; 2602afaf5a2dSDavid Somayajulu 2603afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2604afaf5a2dSDavid Somayajulu return 0; 26055ae16db3SDoug Maxey 2606afaf5a2dSDavid Somayajulu unregister_transport: 2607afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2608afaf5a2dSDavid Somayajulu release_srb_cache: 2609afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2610afaf5a2dSDavid Somayajulu no_srp_cache: 2611afaf5a2dSDavid Somayajulu return ret; 2612afaf5a2dSDavid Somayajulu } 2613afaf5a2dSDavid Somayajulu 2614afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2615afaf5a2dSDavid Somayajulu { 2616afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2617afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2618afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2619afaf5a2dSDavid Somayajulu } 2620afaf5a2dSDavid Somayajulu 2621afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2622afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2623afaf5a2dSDavid Somayajulu 2624afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2625afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2626afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2627afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2628