1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 37d01d069SVikas Chaudhary * Copyright (c) 2003-2010 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 85a0e3ad6STejun Heo #include <linux/slab.h> 9afaf5a2dSDavid Somayajulu 10afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 11afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 12afaf5a2dSDavid Somayajulu 13afaf5a2dSDavid Somayajulu #include "ql4_def.h" 14bee4fe8eSDavid C Somayajulu #include "ql4_version.h" 15bee4fe8eSDavid C Somayajulu #include "ql4_glbl.h" 16bee4fe8eSDavid C Somayajulu #include "ql4_dbg.h" 17bee4fe8eSDavid C Somayajulu #include "ql4_inline.h" 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * Driver version 21afaf5a2dSDavid Somayajulu */ 2247975477SAdrian Bunk static char qla4xxx_version_str[40]; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * SRB allocation cache 26afaf5a2dSDavid Somayajulu */ 27e18b890bSChristoph Lameter static struct kmem_cache *srb_cachep; 28afaf5a2dSDavid Somayajulu 29afaf5a2dSDavid Somayajulu /* 30afaf5a2dSDavid Somayajulu * Module parameter information and variables 31afaf5a2dSDavid Somayajulu */ 32afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 33f4f5df23SVikas Chaudhary module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 35f4f5df23SVikas Chaudhary "Don't reset the HBA for driver recovery \n" 36f4f5df23SVikas Chaudhary " 0 - It will reset HBA (Default)\n" 37f4f5df23SVikas Chaudhary " 1 - It will NOT reset HBA"); 38afaf5a2dSDavid Somayajulu 3911010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 40f4f5df23SVikas Chaudhary module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); 4111010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 42afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 43afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 44afaf5a2dSDavid Somayajulu 45f4f5df23SVikas Chaudhary int ql4xenablemsix = 1; 46f4f5df23SVikas Chaudhary module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); 47f4f5df23SVikas Chaudhary MODULE_PARM_DESC(ql4xenablemsix, 48f4f5df23SVikas Chaudhary "Set to enable MSI or MSI-X interrupt mechanism.\n" 49f4f5df23SVikas Chaudhary " 0 = enable INTx interrupt mechanism.\n" 50f4f5df23SVikas Chaudhary " 1 = enable MSI-X interrupt mechanism (Default).\n" 51f4f5df23SVikas Chaudhary " 2 = enable MSI interrupt mechanism."); 52477ffb9dSDavid C Somayajulu 53d510d965SMike Christie #define QL4_DEF_QDEPTH 32 548bb4033dSVikas Chaudhary static int ql4xmaxqdepth = QL4_DEF_QDEPTH; 558bb4033dSVikas Chaudhary module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR); 568bb4033dSVikas Chaudhary MODULE_PARM_DESC(ql4xmaxqdepth, 578bb4033dSVikas Chaudhary "Maximum queue depth to report for target devices.\n" 588bb4033dSVikas Chaudhary " Default: 32."); 59d510d965SMike Christie 603038727cSVikas Chaudhary static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO; 613038727cSVikas Chaudhary module_param(ql4xsess_recovery_tmo, int, S_IRUGO); 623038727cSVikas Chaudhary MODULE_PARM_DESC(ql4xsess_recovery_tmo, 633038727cSVikas Chaudhary "Target Session Recovery Timeout.\n" 643038727cSVikas Chaudhary " Default: 30 sec."); 653038727cSVikas Chaudhary 66afaf5a2dSDavid Somayajulu /* 67afaf5a2dSDavid Somayajulu * SCSI host template entry points 68afaf5a2dSDavid Somayajulu */ 6947975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 70afaf5a2dSDavid Somayajulu 71afaf5a2dSDavid Somayajulu /* 72afaf5a2dSDavid Somayajulu * iSCSI template entry points 73afaf5a2dSDavid Somayajulu */ 742174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 752174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 762174a04eSMike Christie struct sockaddr *dst_addr); 77afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 78afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 79afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 80afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 81aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 82aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 83afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 845c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 85afaf5a2dSDavid Somayajulu 86afaf5a2dSDavid Somayajulu /* 87afaf5a2dSDavid Somayajulu * SCSI host template entry points 88afaf5a2dSDavid Somayajulu */ 89f281233dSJeff Garzik static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); 9009a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 91afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 92ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 93afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 94afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 95afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 96afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 97024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 98afaf5a2dSDavid Somayajulu 99f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 100f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 101f4f5df23SVikas Chaudhary 102afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 103afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 104afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 105afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 106afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 107afaf5a2dSDavid Somayajulu 10809a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 109afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 110ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 111afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1125c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 113afaf5a2dSDavid Somayajulu 114afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 115afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 116afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 117afaf5a2dSDavid Somayajulu 118921601b7SMike Christie .scan_finished = iscsi_scan_finished, 119024f801fSMike Christie .scan_start = qla4xxx_scan_start, 120921601b7SMike Christie 121afaf5a2dSDavid Somayajulu .this_id = -1, 122afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 123afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 124afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 125afaf5a2dSDavid Somayajulu 126afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 127afaf5a2dSDavid Somayajulu }; 128afaf5a2dSDavid Somayajulu 129afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 130afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 131afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 132d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 133d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 134aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 1353b2bef1fSVikas Chaudhary ISCSI_TARGET_NAME | ISCSI_TPGT | 1363b2bef1fSVikas Chaudhary ISCSI_TARGET_ALIAS, 1378ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 13822236961SMike Christie ISCSI_HOST_IPADDRESS | 1398ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 140afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 141afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 142afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 143aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 144afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 145afaf5a2dSDavid Somayajulu }; 146afaf5a2dSDavid Somayajulu 147afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 148afaf5a2dSDavid Somayajulu 1495c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1505c656af7SMike Christie { 1515c656af7SMike Christie struct iscsi_cls_session *session; 1525c656af7SMike Christie struct ddb_entry *ddb_entry; 1535c656af7SMike Christie 1545c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1555c656af7SMike Christie ddb_entry = session->dd_data; 1565c656af7SMike Christie 1575c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1585c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1595c656af7SMike Christie return BLK_EH_RESET_TIMER; 1605c656af7SMike Christie else 1615c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1625c656af7SMike Christie } 1635c656af7SMike Christie 164afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 165afaf5a2dSDavid Somayajulu { 166afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 167afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 168afaf5a2dSDavid Somayajulu 169568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 170afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 171afaf5a2dSDavid Somayajulu 1723013cea8SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " 173568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 174568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 1753038727cSVikas Chaudhary ddb_entry->sess->recovery_tmo)); 176afaf5a2dSDavid Somayajulu } 177568d303bSMike Christie } 178afaf5a2dSDavid Somayajulu 179aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 180aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 181aa1e93a2SMike Christie { 182aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 183aa1e93a2SMike Christie int len; 184aa1e93a2SMike Christie 185aa1e93a2SMike Christie switch (param) { 186aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1877ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 188aa1e93a2SMike Christie break; 18922236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 19022236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 19122236961SMike Christie ha->ip_address[1], ha->ip_address[2], 19222236961SMike Christie ha->ip_address[3]); 19322236961SMike Christie break; 1948ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 19522236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1968ad5781aSMike Christie break; 197aa1e93a2SMike Christie default: 198aa1e93a2SMike Christie return -ENOSYS; 199aa1e93a2SMike Christie } 200aa1e93a2SMike Christie 201aa1e93a2SMike Christie return len; 202aa1e93a2SMike Christie } 203aa1e93a2SMike Christie 204afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 205afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 206afaf5a2dSDavid Somayajulu { 207afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 208afaf5a2dSDavid Somayajulu int len; 209afaf5a2dSDavid Somayajulu 210afaf5a2dSDavid Somayajulu switch (param) { 211afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 212afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 213afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 214afaf5a2dSDavid Somayajulu break; 215afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 216afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 217afaf5a2dSDavid Somayajulu break; 2183b2bef1fSVikas Chaudhary case ISCSI_PARAM_TARGET_ALIAS: 2193b2bef1fSVikas Chaudhary len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 2203b2bef1fSVikas Chaudhary ddb_entry->iscsi_alias); 2213b2bef1fSVikas Chaudhary break; 222afaf5a2dSDavid Somayajulu default: 223afaf5a2dSDavid Somayajulu return -ENOSYS; 224afaf5a2dSDavid Somayajulu } 225afaf5a2dSDavid Somayajulu 226afaf5a2dSDavid Somayajulu return len; 227afaf5a2dSDavid Somayajulu } 228afaf5a2dSDavid Somayajulu 229afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 230afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 231afaf5a2dSDavid Somayajulu { 232afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 233afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 234afaf5a2dSDavid Somayajulu int len; 235afaf5a2dSDavid Somayajulu 236afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 237afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 238afaf5a2dSDavid Somayajulu 239afaf5a2dSDavid Somayajulu switch (param) { 240afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 241afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 242afaf5a2dSDavid Somayajulu break; 243afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 244afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 24563779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 246afaf5a2dSDavid Somayajulu break; 247afaf5a2dSDavid Somayajulu default: 248afaf5a2dSDavid Somayajulu return -ENOSYS; 249afaf5a2dSDavid Somayajulu } 250afaf5a2dSDavid Somayajulu 251afaf5a2dSDavid Somayajulu return len; 252afaf5a2dSDavid Somayajulu } 253afaf5a2dSDavid Somayajulu 2542174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2552174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2562174a04eSMike Christie struct sockaddr *dst_addr) 257afaf5a2dSDavid Somayajulu { 258afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 259afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 260afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 261afaf5a2dSDavid Somayajulu int ret = 0; 262afaf5a2dSDavid Somayajulu 263afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 264afaf5a2dSDavid Somayajulu 265afaf5a2dSDavid Somayajulu switch (type) { 266afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 267afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 268afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 269afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 270afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 271afaf5a2dSDavid Somayajulu ret = -EIO; 272afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 273afaf5a2dSDavid Somayajulu /* 274afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 275afaf5a2dSDavid Somayajulu */ 276afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 277afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 278afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 279afaf5a2dSDavid Somayajulu ret = -EIO; 280afaf5a2dSDavid Somayajulu } else 281afaf5a2dSDavid Somayajulu ret = -ENOSYS; 282afaf5a2dSDavid Somayajulu break; 283afaf5a2dSDavid Somayajulu default: 284afaf5a2dSDavid Somayajulu ret = -ENOSYS; 285afaf5a2dSDavid Somayajulu } 286afaf5a2dSDavid Somayajulu return ret; 287afaf5a2dSDavid Somayajulu } 288afaf5a2dSDavid Somayajulu 289afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 290afaf5a2dSDavid Somayajulu { 291afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 292afaf5a2dSDavid Somayajulu return; 293afaf5a2dSDavid Somayajulu 294afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 29526974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 296afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 297afaf5a2dSDavid Somayajulu } 298afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 299afaf5a2dSDavid Somayajulu } 300afaf5a2dSDavid Somayajulu 301afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 302afaf5a2dSDavid Somayajulu { 303afaf5a2dSDavid Somayajulu int err; 304afaf5a2dSDavid Somayajulu 3053038727cSVikas Chaudhary ddb_entry->sess->recovery_tmo = ql4xsess_recovery_tmo; 3063013cea8SVikas Chaudhary 307afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 308afaf5a2dSDavid Somayajulu if (err) { 309afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 310afaf5a2dSDavid Somayajulu return err; 311afaf5a2dSDavid Somayajulu } 312afaf5a2dSDavid Somayajulu 3135d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 314afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 315afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 316afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 317afaf5a2dSDavid Somayajulu return -ENOMEM; 318afaf5a2dSDavid Somayajulu } 319b635930dSMike Christie 320b635930dSMike Christie /* finally ready to go */ 321b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 322afaf5a2dSDavid Somayajulu return 0; 323afaf5a2dSDavid Somayajulu } 324afaf5a2dSDavid Somayajulu 325afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 326afaf5a2dSDavid Somayajulu { 327afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 328afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 329afaf5a2dSDavid Somayajulu 3305d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3315d91e209SMike Christie sizeof(struct ddb_entry)); 332afaf5a2dSDavid Somayajulu if (!sess) 333afaf5a2dSDavid Somayajulu return NULL; 334afaf5a2dSDavid Somayajulu 335afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 336afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 337afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 338afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 339afaf5a2dSDavid Somayajulu return ddb_entry; 340afaf5a2dSDavid Somayajulu } 341afaf5a2dSDavid Somayajulu 342024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 343024f801fSMike Christie { 344024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 345024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 346024f801fSMike Christie 347024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 348024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 349024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 350024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 351024f801fSMike Christie } 352024f801fSMike Christie } 353024f801fSMike Christie 354afaf5a2dSDavid Somayajulu /* 355afaf5a2dSDavid Somayajulu * Timer routines 356afaf5a2dSDavid Somayajulu */ 357afaf5a2dSDavid Somayajulu 358afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 359afaf5a2dSDavid Somayajulu unsigned long interval) 360afaf5a2dSDavid Somayajulu { 361afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 362afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 363afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 364afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 365afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 366afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 367afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 368afaf5a2dSDavid Somayajulu ha->timer_active = 1; 369afaf5a2dSDavid Somayajulu } 370afaf5a2dSDavid Somayajulu 371afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 372afaf5a2dSDavid Somayajulu { 373afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 374afaf5a2dSDavid Somayajulu ha->timer_active = 0; 375afaf5a2dSDavid Somayajulu } 376afaf5a2dSDavid Somayajulu 377afaf5a2dSDavid Somayajulu /*** 378afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 379afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 380afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 381afaf5a2dSDavid Somayajulu * 382f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 383afaf5a2dSDavid Somayajulu **/ 384afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 385afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 386afaf5a2dSDavid Somayajulu { 387f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 388afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 389f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 390f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 391f4f5df23SVikas Chaudhary } else 392f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 393f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 394f4f5df23SVikas Chaudhary 395b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 396e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 397afaf5a2dSDavid Somayajulu } 398afaf5a2dSDavid Somayajulu 399f4f5df23SVikas Chaudhary /** 400f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 401f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 402f4f5df23SVikas Chaudhary * 403f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 404f4f5df23SVikas Chaudhary **/ 405f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 406f4f5df23SVikas Chaudhary { 407f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 408f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 409f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 410f4f5df23SVikas Chaudhary } 411f4f5df23SVikas Chaudhary } 412f4f5df23SVikas Chaudhary 413afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 414afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 415afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 416afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 417afaf5a2dSDavid Somayajulu { 418afaf5a2dSDavid Somayajulu struct srb *srb; 419afaf5a2dSDavid Somayajulu 420afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 421afaf5a2dSDavid Somayajulu if (!srb) 422afaf5a2dSDavid Somayajulu return srb; 423afaf5a2dSDavid Somayajulu 42409a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 425afaf5a2dSDavid Somayajulu srb->ha = ha; 426afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 427afaf5a2dSDavid Somayajulu srb->cmd = cmd; 428afaf5a2dSDavid Somayajulu srb->flags = 0; 4295369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 430afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 431afaf5a2dSDavid Somayajulu 432afaf5a2dSDavid Somayajulu return srb; 433afaf5a2dSDavid Somayajulu } 434afaf5a2dSDavid Somayajulu 435afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 436afaf5a2dSDavid Somayajulu { 437afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 438afaf5a2dSDavid Somayajulu 439afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4405f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 441afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 442afaf5a2dSDavid Somayajulu } 4435369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 444afaf5a2dSDavid Somayajulu } 445afaf5a2dSDavid Somayajulu 44609a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 447afaf5a2dSDavid Somayajulu { 44809a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 449afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 45009a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 451afaf5a2dSDavid Somayajulu 452afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 453afaf5a2dSDavid Somayajulu 454afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 455afaf5a2dSDavid Somayajulu 456afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 457afaf5a2dSDavid Somayajulu } 458afaf5a2dSDavid Somayajulu 459afaf5a2dSDavid Somayajulu /** 460afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 461afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 462afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 463afaf5a2dSDavid Somayajulu * that the command has been processed. 464afaf5a2dSDavid Somayajulu * 465afaf5a2dSDavid Somayajulu * Remarks: 466afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 467afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 468afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 469afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 470afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 471afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 472afaf5a2dSDavid Somayajulu **/ 473f281233dSJeff Garzik static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, 474afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 475afaf5a2dSDavid Somayajulu { 476afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 477afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4787fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 479afaf5a2dSDavid Somayajulu struct srb *srb; 480afaf5a2dSDavid Somayajulu int rval; 481afaf5a2dSDavid Somayajulu 4822232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 4832232be0dSLalit Chandivade if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) 4842232be0dSLalit Chandivade cmd->result = DID_NO_CONNECT << 16; 4852232be0dSLalit Chandivade else 4862232be0dSLalit Chandivade cmd->result = DID_REQUEUE << 16; 4872232be0dSLalit Chandivade goto qc_fail_command; 4882232be0dSLalit Chandivade } 4892232be0dSLalit Chandivade 4907fb1921bSMike Christie if (!sess) { 4917fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4927fb1921bSMike Christie goto qc_fail_command; 4937fb1921bSMike Christie } 4947fb1921bSMike Christie 4957fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4967fb1921bSMike Christie if (rval) { 4977fb1921bSMike Christie cmd->result = rval; 4987fb1921bSMike Christie goto qc_fail_command; 4997fb1921bSMike Christie } 5007fb1921bSMike Christie 501afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 502afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 503afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 504afaf5a2dSDavid Somayajulu goto qc_fail_command; 505afaf5a2dSDavid Somayajulu } 506c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 507afaf5a2dSDavid Somayajulu } 508afaf5a2dSDavid Somayajulu 509f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 510f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 511f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 512f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 513f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 514f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 515f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 516477ffb9dSDavid C Somayajulu goto qc_host_busy; 517477ffb9dSDavid C Somayajulu 518afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 519afaf5a2dSDavid Somayajulu 520afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 521afaf5a2dSDavid Somayajulu if (!srb) 522afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 523afaf5a2dSDavid Somayajulu 524afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 525afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 526afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 527afaf5a2dSDavid Somayajulu 528afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 529afaf5a2dSDavid Somayajulu return 0; 530afaf5a2dSDavid Somayajulu 531afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 532afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 533afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 534afaf5a2dSDavid Somayajulu 535afaf5a2dSDavid Somayajulu qc_host_busy_lock: 536afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 537afaf5a2dSDavid Somayajulu 538afaf5a2dSDavid Somayajulu qc_host_busy: 539afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 540afaf5a2dSDavid Somayajulu 541afaf5a2dSDavid Somayajulu qc_fail_command: 542afaf5a2dSDavid Somayajulu done(cmd); 543afaf5a2dSDavid Somayajulu 544afaf5a2dSDavid Somayajulu return 0; 545afaf5a2dSDavid Somayajulu } 546afaf5a2dSDavid Somayajulu 547f281233dSJeff Garzik static DEF_SCSI_QCMD(qla4xxx_queuecommand) 548f281233dSJeff Garzik 549afaf5a2dSDavid Somayajulu /** 550afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 551afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 552afaf5a2dSDavid Somayajulu * 553afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 554afaf5a2dSDavid Somayajulu **/ 555afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 556afaf5a2dSDavid Somayajulu { 557afaf5a2dSDavid Somayajulu if (ha->queues) 558afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 559afaf5a2dSDavid Somayajulu ha->queues_dma); 560afaf5a2dSDavid Somayajulu 561afaf5a2dSDavid Somayajulu ha->queues_len = 0; 562afaf5a2dSDavid Somayajulu ha->queues = NULL; 563afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 564afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 565afaf5a2dSDavid Somayajulu ha->request_dma = 0; 566afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 567afaf5a2dSDavid Somayajulu ha->response_dma = 0; 568afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 569afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 570afaf5a2dSDavid Somayajulu 571afaf5a2dSDavid Somayajulu /* Free srb pool. */ 572afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 573afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 574afaf5a2dSDavid Somayajulu 575afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 576afaf5a2dSDavid Somayajulu 577afaf5a2dSDavid Somayajulu /* release io space registers */ 578f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 579f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 580f4f5df23SVikas Chaudhary iounmap( 581f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 582f4f5df23SVikas Chaudhary } else if (ha->reg) 583afaf5a2dSDavid Somayajulu iounmap(ha->reg); 584afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 585afaf5a2dSDavid Somayajulu } 586afaf5a2dSDavid Somayajulu 587afaf5a2dSDavid Somayajulu /** 588afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 589afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 590afaf5a2dSDavid Somayajulu * 591afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 592afaf5a2dSDavid Somayajulu * for srbs. 593afaf5a2dSDavid Somayajulu **/ 594afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 595afaf5a2dSDavid Somayajulu { 596afaf5a2dSDavid Somayajulu unsigned long align; 597afaf5a2dSDavid Somayajulu 598afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 599afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 600afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 601afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 602afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 603afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 604afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 605afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 606afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 607c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 608afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 609afaf5a2dSDavid Somayajulu 610afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 611afaf5a2dSDavid Somayajulu } 612afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 613afaf5a2dSDavid Somayajulu 614afaf5a2dSDavid Somayajulu /* 615afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 616afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 617afaf5a2dSDavid Somayajulu */ 618afaf5a2dSDavid Somayajulu align = 0; 619afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 620afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 621afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 622afaf5a2dSDavid Somayajulu 623afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 624afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 625afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 626afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 627afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 628afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 629afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 630afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 631afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 632afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 633afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 634afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 635afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 636afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 637afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 638afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 639afaf5a2dSDavid Somayajulu 640afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 641afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 642afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 643afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 644c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 645afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 646afaf5a2dSDavid Somayajulu 647afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 648afaf5a2dSDavid Somayajulu } 649afaf5a2dSDavid Somayajulu 650afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 651afaf5a2dSDavid Somayajulu 652afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 653afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 654afaf5a2dSDavid Somayajulu return QLA_ERROR; 655afaf5a2dSDavid Somayajulu } 656afaf5a2dSDavid Somayajulu 657afaf5a2dSDavid Somayajulu /** 658f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 659f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 660f4f5df23SVikas Chaudhary * 661f4f5df23SVikas Chaudhary * Context: Interrupt 662f4f5df23SVikas Chaudhary **/ 663f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 664f4f5df23SVikas Chaudhary { 665f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 666f4f5df23SVikas Chaudhary 667f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 6682232be0dSLalit Chandivade /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ 6692232be0dSLalit Chandivade if (fw_heartbeat_counter == 0xffffffff) { 6702232be0dSLalit Chandivade DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " 6712232be0dSLalit Chandivade "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", 6722232be0dSLalit Chandivade ha->host_no, __func__)); 6732232be0dSLalit Chandivade return; 6742232be0dSLalit Chandivade } 675f4f5df23SVikas Chaudhary 676f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 677f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 678f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 679f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 680f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 681f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 682f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 68368d92ebfSVikas Chaudhary 68468d92ebfSVikas Chaudhary ql4_printk(KERN_INFO, ha, 68568d92ebfSVikas Chaudhary "scsi(%ld): %s, Dumping hw/fw registers:\n " 68668d92ebfSVikas Chaudhary " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:" 68768d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:" 68868d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:" 68968d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_4_PC: 0x%x\n", 69068d92ebfSVikas Chaudhary ha->host_no, __func__, halt_status, 69168d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, 69268d92ebfSVikas Chaudhary QLA82XX_PEG_HALT_STATUS2), 69368d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 + 69468d92ebfSVikas Chaudhary 0x3c), 69568d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 + 69668d92ebfSVikas Chaudhary 0x3c), 69768d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 + 69868d92ebfSVikas Chaudhary 0x3c), 69968d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 + 70068d92ebfSVikas Chaudhary 0x3c), 70168d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 + 70268d92ebfSVikas Chaudhary 0x3c)); 70321033639SNilesh Javali 704f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 705f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 706f4f5df23SVikas Chaudhary * DPC */ 707f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 708f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 709f4f5df23SVikas Chaudhary else { 710f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 711f4f5df23SVikas Chaudhary ha->host_no, __func__); 712f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 713f4f5df23SVikas Chaudhary } 714f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 71521033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 716f4f5df23SVikas Chaudhary } 71799457d75SLalit Chandivade } else 71899457d75SLalit Chandivade ha->seconds_since_last_heartbeat = 0; 71999457d75SLalit Chandivade 720f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 721f4f5df23SVikas Chaudhary } 722f4f5df23SVikas Chaudhary 723f4f5df23SVikas Chaudhary /** 724f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 725f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 726f4f5df23SVikas Chaudhary * 727f4f5df23SVikas Chaudhary * Context: Interrupt 728f4f5df23SVikas Chaudhary **/ 729f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 730f4f5df23SVikas Chaudhary { 731f4f5df23SVikas Chaudhary uint32_t dev_state; 732f4f5df23SVikas Chaudhary 733f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 734f4f5df23SVikas Chaudhary 735f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 736d56a1f7bSLalit Chandivade if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 737d56a1f7bSLalit Chandivade test_bit(DPC_RESET_HA, &ha->dpc_flags) || 738977f46a4SVikas Chaudhary test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) { 739f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 740f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 7413930b8c1SVikas Chaudhary if (!ql4xdontresethba) { 7423930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: " 7433930b8c1SVikas Chaudhary "NEED RESET!\n", __func__); 744f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 745f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 74621033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 7473930b8c1SVikas Chaudhary } 748f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 749f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 7503930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", 7513930b8c1SVikas Chaudhary __func__); 752f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 753f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 754f4f5df23SVikas Chaudhary } else { 755f4f5df23SVikas Chaudhary /* Check firmware health */ 756f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 757f4f5df23SVikas Chaudhary } 758f4f5df23SVikas Chaudhary } 759f4f5df23SVikas Chaudhary } 760f4f5df23SVikas Chaudhary 761f4f5df23SVikas Chaudhary /** 762afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 763afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 764afaf5a2dSDavid Somayajulu **/ 765afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 766afaf5a2dSDavid Somayajulu { 767afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 768afaf5a2dSDavid Somayajulu int start_dpc = 0; 7692232be0dSLalit Chandivade uint16_t w; 7702232be0dSLalit Chandivade 7712232be0dSLalit Chandivade /* If we are in the middle of AER/EEH processing 7722232be0dSLalit Chandivade * skip any processing and reschedule the timer 7732232be0dSLalit Chandivade */ 7742232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 7752232be0dSLalit Chandivade mod_timer(&ha->timer, jiffies + HZ); 7762232be0dSLalit Chandivade return; 7772232be0dSLalit Chandivade } 7782232be0dSLalit Chandivade 7792232be0dSLalit Chandivade /* Hardware read to trigger an EEH error during mailbox waits. */ 7802232be0dSLalit Chandivade if (!pci_channel_offline(ha->pdev)) 7812232be0dSLalit Chandivade pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); 782afaf5a2dSDavid Somayajulu 783f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 784f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 785f4f5df23SVikas Chaudhary } 786f4f5df23SVikas Chaudhary 787afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 788afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 789afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 790afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 791afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 792afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 793afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 794afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 795afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 796afaf5a2dSDavid Somayajulu == 0) { 797afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 798afaf5a2dSDavid Somayajulu retry_relogin_timer, 799afaf5a2dSDavid Somayajulu INVALID_ENTRY); 800afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 801afaf5a2dSDavid Somayajulu &ha->dpc_flags); 802afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 803f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 804afaf5a2dSDavid Somayajulu " login device\n", 805afaf5a2dSDavid Somayajulu ha->host_no, __func__, 806afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 807afaf5a2dSDavid Somayajulu } else 808afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 809afaf5a2dSDavid Somayajulu retry_relogin_timer); 810afaf5a2dSDavid Somayajulu } 811afaf5a2dSDavid Somayajulu } 812afaf5a2dSDavid Somayajulu 813afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 814afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 815afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 816afaf5a2dSDavid Somayajulu /* 817afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 818afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 819afaf5a2dSDavid Somayajulu */ 820afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 821afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 822afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 823afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 824afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 825afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 826f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 827afaf5a2dSDavid Somayajulu " timed out-retrying" 828afaf5a2dSDavid Somayajulu " relogin (%d)\n", 829afaf5a2dSDavid Somayajulu ha->host_no, 830afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 831afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 832afaf5a2dSDavid Somayajulu relogin_retry_count)) 833afaf5a2dSDavid Somayajulu ); 834afaf5a2dSDavid Somayajulu start_dpc++; 835f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 836cd09b2c3SJustin P. Mattock "initiate relogin after" 837afaf5a2dSDavid Somayajulu " %d seconds\n", 838afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 839afaf5a2dSDavid Somayajulu ddb_entry->target, 840afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 841afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 842afaf5a2dSDavid Somayajulu ); 843afaf5a2dSDavid Somayajulu 844afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 845afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 846afaf5a2dSDavid Somayajulu } 847afaf5a2dSDavid Somayajulu } 848afaf5a2dSDavid Somayajulu } 849afaf5a2dSDavid Somayajulu 850f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 851afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 852afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 853afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 854afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 855afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 856afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 857afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 858afaf5a2dSDavid Somayajulu } 859f4f5df23SVikas Chaudhary } 860afaf5a2dSDavid Somayajulu 861afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 862afaf5a2dSDavid Somayajulu if ((start_dpc || 863afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 864afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 865afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 866f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 867afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 868afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 869065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 870f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 871f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 872afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 873f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags) && 874afaf5a2dSDavid Somayajulu ha->dpc_thread) { 875afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 876afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 877afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 878f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 879afaf5a2dSDavid Somayajulu } 880afaf5a2dSDavid Somayajulu 881afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 882afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 883afaf5a2dSDavid Somayajulu 884afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 885afaf5a2dSDavid Somayajulu } 886afaf5a2dSDavid Somayajulu 887afaf5a2dSDavid Somayajulu /** 888afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 889afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 890afaf5a2dSDavid Somayajulu * 891afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 892afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 893afaf5a2dSDavid Somayajulu **/ 894afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 895afaf5a2dSDavid Somayajulu { 896afaf5a2dSDavid Somayajulu uint32_t index = 0; 897afaf5a2dSDavid Somayajulu unsigned long flags; 898afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 899afaf5a2dSDavid Somayajulu 900f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 901f4f5df23SVikas Chaudhary 902f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 903f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 904f4f5df23SVikas Chaudhary 905f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 906afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 907afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 908afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 909afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 910a1e0063dSMike Christie /* 911a1e0063dSMike Christie * We cannot just check if the index is valid, 912a1e0063dSMike Christie * becase if we are run from the scsi eh, then 913a1e0063dSMike Christie * the scsi/block layer is going to prevent 914a1e0063dSMike Christie * the tag from being released. 915a1e0063dSMike Christie */ 916a1e0063dSMike Christie if (cmd != NULL && CMD_SP(cmd)) 917afaf5a2dSDavid Somayajulu break; 918afaf5a2dSDavid Somayajulu } 919afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 920afaf5a2dSDavid Somayajulu 921afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 922f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 923f4f5df23SVikas Chaudhary return QLA_SUCCESS; 924afaf5a2dSDavid Somayajulu 925afaf5a2dSDavid Somayajulu msleep(1000); 926afaf5a2dSDavid Somayajulu } 927f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 928f4f5df23SVikas Chaudhary * return ERROR. */ 929f4f5df23SVikas Chaudhary return QLA_ERROR; 930afaf5a2dSDavid Somayajulu } 931afaf5a2dSDavid Somayajulu 932f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 933afaf5a2dSDavid Somayajulu { 934afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 935477ffb9dSDavid C Somayajulu unsigned long flags = 0; 936477ffb9dSDavid C Somayajulu 937477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 938afaf5a2dSDavid Somayajulu 939f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 940f4f5df23SVikas Chaudhary return QLA_ERROR; 941f4f5df23SVikas Chaudhary 942afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 943afaf5a2dSDavid Somayajulu 944afaf5a2dSDavid Somayajulu /* 945afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 946afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 947afaf5a2dSDavid Somayajulu */ 948afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 949afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 950afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 951afaf5a2dSDavid Somayajulu 952afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 953afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 954afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 955afaf5a2dSDavid Somayajulu 956afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 957f4f5df23SVikas Chaudhary return QLA_SUCCESS; 958477ffb9dSDavid C Somayajulu } 959477ffb9dSDavid C Somayajulu 960477ffb9dSDavid C Somayajulu /** 961477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 962477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 963477ffb9dSDavid C Somayajulu **/ 964477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 965477ffb9dSDavid C Somayajulu { 966477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 967477ffb9dSDavid C Somayajulu unsigned long flags = 0; 968f931c534SVikas Chaudhary int status; 969477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 970477ffb9dSDavid C Somayajulu 971f931c534SVikas Chaudhary status = qla4xxx_hw_reset(ha); 972f931c534SVikas Chaudhary if (status != QLA_SUCCESS) 973f931c534SVikas Chaudhary return status; 974afaf5a2dSDavid Somayajulu 975f931c534SVikas Chaudhary status = QLA_ERROR; 976afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 977afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 978afaf5a2dSDavid Somayajulu do { 979afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 980afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 981afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 982afaf5a2dSDavid Somayajulu 983afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 984afaf5a2dSDavid Somayajulu break; 985afaf5a2dSDavid Somayajulu 986afaf5a2dSDavid Somayajulu msleep(1000); 987afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 988afaf5a2dSDavid Somayajulu 989afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 990afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 991afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 992afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 993afaf5a2dSDavid Somayajulu ha->host_no)); 994afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 995afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 996afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 997afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 998afaf5a2dSDavid Somayajulu } 999afaf5a2dSDavid Somayajulu 1000afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1001afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1002afaf5a2dSDavid Somayajulu do { 1003afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1004afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1005afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1006afaf5a2dSDavid Somayajulu 1007afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 1008afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1009afaf5a2dSDavid Somayajulu break; 1010afaf5a2dSDavid Somayajulu } 1011afaf5a2dSDavid Somayajulu 1012afaf5a2dSDavid Somayajulu msleep(1000); 1013afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1014afaf5a2dSDavid Somayajulu 1015afaf5a2dSDavid Somayajulu /* 1016afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 1017afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 1018afaf5a2dSDavid Somayajulu */ 1019afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1020afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1021afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 1022afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 1023afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1024afaf5a2dSDavid Somayajulu } 1025afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1026afaf5a2dSDavid Somayajulu 1027afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 1028afaf5a2dSDavid Somayajulu * function is also enabled. 1029afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 1030afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 1031afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 1032afaf5a2dSDavid Somayajulu */ 1033afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 1034afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 1035afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1036afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 1037afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1038afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1039afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1040afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1041afaf5a2dSDavid Somayajulu do { 1042afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1043afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1044afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1045afaf5a2dSDavid Somayajulu 1046afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 1047afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1048afaf5a2dSDavid Somayajulu break; 1049afaf5a2dSDavid Somayajulu } 1050afaf5a2dSDavid Somayajulu 1051afaf5a2dSDavid Somayajulu msleep(1000); 1052afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1053afaf5a2dSDavid Somayajulu } 1054afaf5a2dSDavid Somayajulu 1055afaf5a2dSDavid Somayajulu return status; 1056afaf5a2dSDavid Somayajulu } 1057afaf5a2dSDavid Somayajulu 1058afaf5a2dSDavid Somayajulu /** 1059f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 1060afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1061f4f5df23SVikas Chaudhary * @res: returned scsi status 1062afaf5a2dSDavid Somayajulu * 1063afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 1064afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 1065afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 1066afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 1067afaf5a2dSDavid Somayajulu **/ 1068f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1069afaf5a2dSDavid Somayajulu { 1070afaf5a2dSDavid Somayajulu struct srb *srb; 1071afaf5a2dSDavid Somayajulu int i; 1072afaf5a2dSDavid Somayajulu unsigned long flags; 1073afaf5a2dSDavid Somayajulu 1074afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1075afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1076afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1077afaf5a2dSDavid Somayajulu if (srb != NULL) { 1078f4f5df23SVikas Chaudhary srb->cmd->result = res; 107909a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1080afaf5a2dSDavid Somayajulu } 1081afaf5a2dSDavid Somayajulu } 1082afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1083afaf5a2dSDavid Somayajulu } 1084afaf5a2dSDavid Somayajulu 1085f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1086f4f5df23SVikas Chaudhary { 1087f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1088f4f5df23SVikas Chaudhary 1089f4f5df23SVikas Chaudhary /* Disable the board */ 1090f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1091f4f5df23SVikas Chaudhary 1092f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1093f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1094f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1095f4f5df23SVikas Chaudhary } 1096f4f5df23SVikas Chaudhary 1097afaf5a2dSDavid Somayajulu /** 1098afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1099afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1100afaf5a2dSDavid Somayajulu **/ 1101f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1102afaf5a2dSDavid Somayajulu { 1103f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1104f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1105afaf5a2dSDavid Somayajulu 1106afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1107f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1108afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 110950a29aecSMike Christie 1110f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1111afaf5a2dSDavid Somayajulu 1112f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1113afaf5a2dSDavid Somayajulu 1114f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1115f4f5df23SVikas Chaudhary reset_chip = 1; 1116afaf5a2dSDavid Somayajulu 1117f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1118f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1119f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1120f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1121f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1122afaf5a2dSDavid Somayajulu } 1123afaf5a2dSDavid Somayajulu 1124f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1125f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1126f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1127f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1128f4f5df23SVikas Chaudhary 1129f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1130f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1131f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1132f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1133f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 11342bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1135f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1136f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1137f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1138f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1139f4f5df23SVikas Chaudhary } else { 1140f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1141f4f5df23SVikas Chaudhary * reset the entire chip */ 1142f4f5df23SVikas Chaudhary reset_chip = 1; 1143f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1144f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1145f4f5df23SVikas Chaudhary } 1146f4f5df23SVikas Chaudhary } 1147f4f5df23SVikas Chaudhary 1148f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1149f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1150f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1151f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 11522bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1153f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1154f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1155f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1156f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1157f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1158f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1159f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1160f4f5df23SVikas Chaudhary } 1161f4f5df23SVikas Chaudhary 1162f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1163f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1164f4f5df23SVikas Chaudhary 1165f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1166f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1167f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1168f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1169f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1170f4f5df23SVikas Chaudhary * stepping on top of the other */ 1171f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1172f4f5df23SVikas Chaudhary ssleep(6); 1173f4f5df23SVikas Chaudhary 1174f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1175f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1176f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1177f4f5df23SVikas Chaudhary } 1178f4f5df23SVikas Chaudhary 1179f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1180f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1181f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1182f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1183f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1184afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1185f4f5df23SVikas Chaudhary * resetting the ha. 1186f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1187f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1188f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1189afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1190afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1191afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1192afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1193afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1194afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1195afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1196afaf5a2dSDavid Somayajulu } else { 1197afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1198afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1199afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1200afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1201afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1202afaf5a2dSDavid Somayajulu ha->host_no, 1203afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1204afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1205afaf5a2dSDavid Somayajulu } 1206afaf5a2dSDavid Somayajulu 1207afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1208afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1209afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1210afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1211afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1212afaf5a2dSDavid Somayajulu ha->host_no)); 1213f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1214afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1215afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1216f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1217afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1218afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1219afaf5a2dSDavid Somayajulu } 1220afaf5a2dSDavid Somayajulu } 1221afaf5a2dSDavid Somayajulu } else { 1222afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1223f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1224afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1225afaf5a2dSDavid Somayajulu } 1226afaf5a2dSDavid Somayajulu 1227afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1228afaf5a2dSDavid Somayajulu 1229f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1230f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1231afaf5a2dSDavid Somayajulu 1232f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1233f4f5df23SVikas Chaudhary 1234f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1235f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 123625985edcSLucas De Marchi status == QLA_ERROR ? "FAILED" : "SUCCEEDED")); 1237f4f5df23SVikas Chaudhary 1238afaf5a2dSDavid Somayajulu return status; 1239afaf5a2dSDavid Somayajulu } 1240afaf5a2dSDavid Somayajulu 12412d7924e6SVikas Chaudhary static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha) 12422d7924e6SVikas Chaudhary { 12432d7924e6SVikas Chaudhary struct ddb_entry *ddb_entry, *dtemp; 12442d7924e6SVikas Chaudhary 12452d7924e6SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 12462d7924e6SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) || 12472d7924e6SVikas Chaudhary (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD)) { 12482d7924e6SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 12492d7924e6SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 12502d7924e6SVikas Chaudhary atomic_set(&ddb_entry->state, DDB_STATE_ONLINE); 12512d7924e6SVikas Chaudhary ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]" 12522d7924e6SVikas Chaudhary " marked ONLINE\n", ha->host_no, __func__, 12532d7924e6SVikas Chaudhary ddb_entry->fw_ddb_index); 12542d7924e6SVikas Chaudhary 12552d7924e6SVikas Chaudhary iscsi_unblock_session(ddb_entry->sess); 12562d7924e6SVikas Chaudhary } else 12572d7924e6SVikas Chaudhary qla4xxx_relogin_device(ha, ddb_entry); 12582d7924e6SVikas Chaudhary } 12592d7924e6SVikas Chaudhary } 12602d7924e6SVikas Chaudhary } 12612d7924e6SVikas Chaudhary 1262f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1263f4f5df23SVikas Chaudhary { 1264f4f5df23SVikas Chaudhary if (ha->dpc_thread && 1265f4f5df23SVikas Chaudhary !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { 1266f4f5df23SVikas Chaudhary set_bit(AF_DPC_SCHEDULED, &ha->flags); 1267f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1268f4f5df23SVikas Chaudhary } 1269f4f5df23SVikas Chaudhary } 1270f4f5df23SVikas Chaudhary 1271afaf5a2dSDavid Somayajulu /** 1272afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1273afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1274afaf5a2dSDavid Somayajulu * 1275afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1276afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1277afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1278afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1279afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1280afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1281afaf5a2dSDavid Somayajulu **/ 1282c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1283afaf5a2dSDavid Somayajulu { 1284c4028958SDavid Howells struct scsi_qla_host *ha = 1285c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1286afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1287477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1288afaf5a2dSDavid Somayajulu 1289f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1290f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1291f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1292afaf5a2dSDavid Somayajulu 1293afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1294afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 12950753b487SVikas Chaudhary goto do_dpc_exit; 1296afaf5a2dSDavid Somayajulu 12972232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 12982232be0dSLalit Chandivade DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", 12992232be0dSLalit Chandivade ha->host_no, __func__, ha->flags)); 13002232be0dSLalit Chandivade goto do_dpc_exit; 13012232be0dSLalit Chandivade } 13022232be0dSLalit Chandivade 1303f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1304f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1305f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1306f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1307f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1308f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1309f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1310f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1311f4f5df23SVikas Chaudhary } 1312f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1313f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1314f4f5df23SVikas Chaudhary } 1315f4f5df23SVikas Chaudhary } 1316f4f5df23SVikas Chaudhary 1317f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1318f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1319afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1320f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1321f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1322f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1323f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1324f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1325f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1326f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1327f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1328f4f5df23SVikas Chaudhary } 1329f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1330f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1331f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1332afaf5a2dSDavid Somayajulu 1333477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1334afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1335afaf5a2dSDavid Somayajulu 1336afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1337afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1338afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1339afaf5a2dSDavid Somayajulu break; 1340afaf5a2dSDavid Somayajulu msleep(1000); 1341afaf5a2dSDavid Somayajulu } 1342afaf5a2dSDavid Somayajulu if (wait_time == 0) 1343afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1344afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1345afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1346f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1347477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1348477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1349f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1350477ffb9dSDavid C Somayajulu } 1351477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1352477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1353f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1354afaf5a2dSDavid Somayajulu } 1355afaf5a2dSDavid Somayajulu } 1356afaf5a2dSDavid Somayajulu 1357f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1358afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1359afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1360afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1361afaf5a2dSDavid Somayajulu 1362afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1363afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1364afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1365afaf5a2dSDavid Somayajulu 1366065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1367065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1368065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1369065aa1b4SVikas Chaudhary /* ---- link down? --- */ 13702d7924e6SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1371065aa1b4SVikas Chaudhary } else { 1372065aa1b4SVikas Chaudhary /* ---- link up? --- * 1373065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1374065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1375065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1376065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1377065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1378065aa1b4SVikas Chaudhary 13792d7924e6SVikas Chaudhary qla4xxx_relogin_all_devices(ha); 1380065aa1b4SVikas Chaudhary } 1381065aa1b4SVikas Chaudhary } 1382065aa1b4SVikas Chaudhary 1383afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1384afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1385afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1386afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1387afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1388afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1389afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1390afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1391afaf5a2dSDavid Somayajulu 1392afaf5a2dSDavid Somayajulu /* 1393afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1394afaf5a2dSDavid Somayajulu * in continuing further. 1395afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1396afaf5a2dSDavid Somayajulu * the system. 1397afaf5a2dSDavid Somayajulu */ 1398afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1399afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1400afaf5a2dSDavid Somayajulu "need to reset hba\n", 1401afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1402afaf5a2dSDavid Somayajulu break; 1403afaf5a2dSDavid Somayajulu } 1404afaf5a2dSDavid Somayajulu } 1405afaf5a2dSDavid Somayajulu } 14060753b487SVikas Chaudhary 14070753b487SVikas Chaudhary do_dpc_exit: 1408f4f5df23SVikas Chaudhary clear_bit(AF_DPC_SCHEDULED, &ha->flags); 1409afaf5a2dSDavid Somayajulu } 1410afaf5a2dSDavid Somayajulu 1411afaf5a2dSDavid Somayajulu /** 1412afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1413afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1414afaf5a2dSDavid Somayajulu **/ 1415afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1416afaf5a2dSDavid Somayajulu { 1417afaf5a2dSDavid Somayajulu 1418afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1419afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1420f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1421afaf5a2dSDavid Somayajulu } 1422afaf5a2dSDavid Somayajulu 1423afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1424afaf5a2dSDavid Somayajulu if (ha->timer_active) 1425afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1426afaf5a2dSDavid Somayajulu 1427f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1428f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1429f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1430f4f5df23SVikas Chaudhary 1431f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1432f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1433f4f5df23SVikas Chaudhary 1434f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1435f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1436f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1437f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1438f4f5df23SVikas Chaudhary } 1439f4f5df23SVikas Chaudhary 1440afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1441afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1442f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1443afaf5a2dSDavid Somayajulu 1444bee4fe8eSDavid C Somayajulu /* free extra memory */ 1445bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1446f4f5df23SVikas Chaudhary } 1447bee4fe8eSDavid C Somayajulu 1448f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1449f4f5df23SVikas Chaudhary { 1450f4f5df23SVikas Chaudhary int status = 0; 1451f4f5df23SVikas Chaudhary uint8_t revision_id; 1452f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1453f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1454afaf5a2dSDavid Somayajulu 1455f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1456f4f5df23SVikas Chaudhary if (status) { 1457f4f5df23SVikas Chaudhary printk(KERN_WARNING 1458f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1459f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1460f4f5df23SVikas Chaudhary goto iospace_error_exit; 1461f4f5df23SVikas Chaudhary } 1462f4f5df23SVikas Chaudhary 1463f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1464f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1465f4f5df23SVikas Chaudhary __func__, revision_id)); 1466f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1467f4f5df23SVikas Chaudhary 1468f4f5df23SVikas Chaudhary /* remap phys address */ 1469f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1470f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1471f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1472f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1473f4f5df23SVikas Chaudhary 1474f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1475f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1476f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1477f4f5df23SVikas Chaudhary printk(KERN_ERR 1478f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1479f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1480f4f5df23SVikas Chaudhary goto iospace_error_exit; 1481f4f5df23SVikas Chaudhary } 1482f4f5df23SVikas Chaudhary 1483f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1484f4f5df23SVikas Chaudhary 1485f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1486f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1487f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1488f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1489f4f5df23SVikas Chaudhary 1490f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1491f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1492f4f5df23SVikas Chaudhary 14932657c800SShyam Sundar ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : 14942657c800SShyam Sundar QLA82XX_CAM_RAM_DB2); 1495f4f5df23SVikas Chaudhary 14962657c800SShyam Sundar return 0; 1497f4f5df23SVikas Chaudhary iospace_error_exit: 1498f4f5df23SVikas Chaudhary return -ENOMEM; 1499afaf5a2dSDavid Somayajulu } 1500afaf5a2dSDavid Somayajulu 1501afaf5a2dSDavid Somayajulu /*** 1502afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1503afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1504afaf5a2dSDavid Somayajulu * 1505afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1506afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1507afaf5a2dSDavid Somayajulu **/ 1508f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1509afaf5a2dSDavid Somayajulu { 1510afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1511afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1512afaf5a2dSDavid Somayajulu 1513afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1514afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1515afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1516afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1517afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1518c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1519afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1520afaf5a2dSDavid Somayajulu pio = 0; 1521afaf5a2dSDavid Somayajulu } 1522afaf5a2dSDavid Somayajulu } else { 1523c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1524afaf5a2dSDavid Somayajulu pio = 0; 1525afaf5a2dSDavid Somayajulu } 1526afaf5a2dSDavid Somayajulu 1527afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1528afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1529afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1530afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1531afaf5a2dSDavid Somayajulu 1532afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1533c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1534afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1535afaf5a2dSDavid Somayajulu 1536afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1537afaf5a2dSDavid Somayajulu } 1538c2660df3SVikas Chaudhary 1539afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1540c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1541afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1542afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1543afaf5a2dSDavid Somayajulu } 1544afaf5a2dSDavid Somayajulu 1545afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1546c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1547afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1548afaf5a2dSDavid Somayajulu 1549afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1550afaf5a2dSDavid Somayajulu } 1551afaf5a2dSDavid Somayajulu 1552afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1553afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1554afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1555afaf5a2dSDavid Somayajulu if (!ha->reg) { 1556c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1557afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1558afaf5a2dSDavid Somayajulu 1559afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1560afaf5a2dSDavid Somayajulu } 1561afaf5a2dSDavid Somayajulu 1562afaf5a2dSDavid Somayajulu return 0; 1563afaf5a2dSDavid Somayajulu 1564afaf5a2dSDavid Somayajulu iospace_error_exit: 1565afaf5a2dSDavid Somayajulu return -ENOMEM; 1566afaf5a2dSDavid Somayajulu } 1567afaf5a2dSDavid Somayajulu 1568f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1569f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1570f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1571f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1572f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1573f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1574f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1575f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1576f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1577f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1578f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1579f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1580f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1581f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1582f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1583f4f5df23SVikas Chaudhary }; 1584f4f5df23SVikas Chaudhary 1585f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1586f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1587f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1588f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1589f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1590f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1591f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1592f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1593f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1594f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1595f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1596f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1597f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1598f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1599f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1600f4f5df23SVikas Chaudhary }; 1601f4f5df23SVikas Chaudhary 1602f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1603f4f5df23SVikas Chaudhary { 1604f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1605f4f5df23SVikas Chaudhary } 1606f4f5df23SVikas Chaudhary 1607f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1608f4f5df23SVikas Chaudhary { 1609f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1610f4f5df23SVikas Chaudhary } 1611f4f5df23SVikas Chaudhary 1612f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1613f4f5df23SVikas Chaudhary { 1614f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1615f4f5df23SVikas Chaudhary } 1616f4f5df23SVikas Chaudhary 1617f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1618f4f5df23SVikas Chaudhary { 1619f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1620f4f5df23SVikas Chaudhary } 1621f4f5df23SVikas Chaudhary 1622afaf5a2dSDavid Somayajulu /** 1623afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1624afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1625afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1626afaf5a2dSDavid Somayajulu * 1627afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1628afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1629afaf5a2dSDavid Somayajulu * the driver. 1630afaf5a2dSDavid Somayajulu **/ 1631afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1632afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1633afaf5a2dSDavid Somayajulu { 1634afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1635afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1636afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1637afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1638afaf5a2dSDavid Somayajulu char buf[34]; 1639f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1640f9880e76SPrasanna Mumbai uint32_t dev_state; 1641afaf5a2dSDavid Somayajulu 1642afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1643afaf5a2dSDavid Somayajulu return -1; 1644afaf5a2dSDavid Somayajulu 1645afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1646afaf5a2dSDavid Somayajulu if (host == NULL) { 1647afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1648afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1649afaf5a2dSDavid Somayajulu goto probe_disable_device; 1650afaf5a2dSDavid Somayajulu } 1651afaf5a2dSDavid Somayajulu 1652afaf5a2dSDavid Somayajulu /* Clear our data area */ 1653afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1654afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1655afaf5a2dSDavid Somayajulu 1656afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1657afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1658afaf5a2dSDavid Somayajulu ha->host = host; 1659afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1660afaf5a2dSDavid Somayajulu 16612232be0dSLalit Chandivade pci_enable_pcie_error_reporting(pdev); 16622232be0dSLalit Chandivade 1663f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1664f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1665f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1666f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1667f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1668f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1669f4f5df23SVikas Chaudhary ha->curr_window = 255; 1670f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1671f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1672f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1673f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1674f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1675f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1676f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1677f4f5df23SVikas Chaudhary } else { 1678f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1679f4f5df23SVikas Chaudhary } 1680f4f5df23SVikas Chaudhary 16812232be0dSLalit Chandivade /* Set EEH reset type to fundamental if required by hba */ 16822232be0dSLalit Chandivade if (is_qla8022(ha)) 16832232be0dSLalit Chandivade pdev->needs_freset = 1; 16842232be0dSLalit Chandivade 1685afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1686f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1687afaf5a2dSDavid Somayajulu if (ret) 1688f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1689afaf5a2dSDavid Somayajulu 1690c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1691afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1692afaf5a2dSDavid Somayajulu 1693afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1694afaf5a2dSDavid Somayajulu 1695afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1696afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1697afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1698afaf5a2dSDavid Somayajulu 1699afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1700f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1701afaf5a2dSDavid Somayajulu 1702afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1703afaf5a2dSDavid Somayajulu 1704afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1705afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1706c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1707afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1708afaf5a2dSDavid Somayajulu 1709afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1710afaf5a2dSDavid Somayajulu goto probe_failed; 1711afaf5a2dSDavid Somayajulu } 1712afaf5a2dSDavid Somayajulu 1713f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1714f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1715f4f5df23SVikas Chaudhary 1716afaf5a2dSDavid Somayajulu /* 1717afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1718afaf5a2dSDavid Somayajulu * firmware 1719afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1720afaf5a2dSDavid Somayajulu */ 1721afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1722f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1723f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1724f9880e76SPrasanna Mumbai 1725f9880e76SPrasanna Mumbai if (is_qla8022(ha)) { 1726f9880e76SPrasanna Mumbai qla4_8xxx_idc_lock(ha); 1727f9880e76SPrasanna Mumbai dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 1728f9880e76SPrasanna Mumbai qla4_8xxx_idc_unlock(ha); 1729f9880e76SPrasanna Mumbai if (dev_state == QLA82XX_DEV_FAILED) { 1730f9880e76SPrasanna Mumbai ql4_printk(KERN_WARNING, ha, "%s: don't retry " 1731f9880e76SPrasanna Mumbai "initialize adapter. H/W is in failed state\n", 1732f9880e76SPrasanna Mumbai __func__); 1733f9880e76SPrasanna Mumbai break; 1734f9880e76SPrasanna Mumbai } 1735f9880e76SPrasanna Mumbai } 1736afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1737afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1738f4f5df23SVikas Chaudhary 1739f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 1740f4f5df23SVikas Chaudhary continue; 1741f4f5df23SVikas Chaudhary 1742afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1743afaf5a2dSDavid Somayajulu } 1744f4f5df23SVikas Chaudhary 1745f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 1746c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 1747afaf5a2dSDavid Somayajulu 1748fe998527SLalit Chandivade if (is_qla8022(ha) && ql4xdontresethba) { 1749fe998527SLalit Chandivade /* Put the device in failed state. */ 1750fe998527SLalit Chandivade DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); 1751fe998527SLalit Chandivade qla4_8xxx_idc_lock(ha); 1752fe998527SLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1753fe998527SLalit Chandivade QLA82XX_DEV_FAILED); 1754fe998527SLalit Chandivade qla4_8xxx_idc_unlock(ha); 1755fe998527SLalit Chandivade } 1756afaf5a2dSDavid Somayajulu ret = -ENODEV; 1757afaf5a2dSDavid Somayajulu goto probe_failed; 1758afaf5a2dSDavid Somayajulu } 1759afaf5a2dSDavid Somayajulu 1760afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1761afaf5a2dSDavid Somayajulu host->max_channel = 0; 1762afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1763afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1764afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1765afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1766afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1767afaf5a2dSDavid Somayajulu 1768afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1769afaf5a2dSDavid Somayajulu if (ret) { 1770c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1771c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 1772afaf5a2dSDavid Somayajulu goto probe_failed; 1773afaf5a2dSDavid Somayajulu } 1774afaf5a2dSDavid Somayajulu 1775afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1776afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1777afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1778afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1779afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1780afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1781c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 1782afaf5a2dSDavid Somayajulu ret = -ENODEV; 1783afaf5a2dSDavid Somayajulu goto probe_failed; 1784afaf5a2dSDavid Somayajulu } 1785c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1786afaf5a2dSDavid Somayajulu 1787f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 1788f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 1789f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 1790f4f5df23SVikas Chaudhary * mbx_intr_enable. 1791f4f5df23SVikas Chaudhary */ 1792f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1793f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 1794afaf5a2dSDavid Somayajulu if (ret) { 1795f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 1796f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 1797afaf5a2dSDavid Somayajulu goto probe_failed; 1798afaf5a2dSDavid Somayajulu } 1799f4f5df23SVikas Chaudhary } 1800afaf5a2dSDavid Somayajulu 18012232be0dSLalit Chandivade pci_save_state(ha->pdev); 1802f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1803afaf5a2dSDavid Somayajulu 1804afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1805afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1806afaf5a2dSDavid Somayajulu 1807afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1808afaf5a2dSDavid Somayajulu 1809afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1810afaf5a2dSDavid Somayajulu 1811afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1812afaf5a2dSDavid Somayajulu if (ret) 1813afaf5a2dSDavid Somayajulu goto probe_failed; 1814afaf5a2dSDavid Somayajulu 1815afaf5a2dSDavid Somayajulu printk(KERN_INFO 1816afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1817afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1818afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1819afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1820afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1821921601b7SMike Christie scsi_scan_host(host); 1822afaf5a2dSDavid Somayajulu return 0; 1823afaf5a2dSDavid Somayajulu 1824afaf5a2dSDavid Somayajulu probe_failed: 1825afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1826f4f5df23SVikas Chaudhary 1827f4f5df23SVikas Chaudhary probe_failed_ioconfig: 18282232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1829afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1830afaf5a2dSDavid Somayajulu 1831afaf5a2dSDavid Somayajulu probe_disable_device: 1832afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1833afaf5a2dSDavid Somayajulu 1834afaf5a2dSDavid Somayajulu return ret; 1835afaf5a2dSDavid Somayajulu } 1836afaf5a2dSDavid Somayajulu 1837afaf5a2dSDavid Somayajulu /** 18387eece5a0SKaren Higgins * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize 18397eece5a0SKaren Higgins * @ha: pointer to adapter structure 18407eece5a0SKaren Higgins * 18417eece5a0SKaren Higgins * Mark the other ISP-4xxx port to indicate that the driver is being removed, 18427eece5a0SKaren Higgins * so that the other port will not re-initialize while in the process of 18437eece5a0SKaren Higgins * removing the ha due to driver unload or hba hotplug. 18447eece5a0SKaren Higgins **/ 18457eece5a0SKaren Higgins static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) 18467eece5a0SKaren Higgins { 18477eece5a0SKaren Higgins struct scsi_qla_host *other_ha = NULL; 18487eece5a0SKaren Higgins struct pci_dev *other_pdev = NULL; 18497eece5a0SKaren Higgins int fn = ISP4XXX_PCI_FN_2; 18507eece5a0SKaren Higgins 18517eece5a0SKaren Higgins /*iscsi function numbers for ISP4xxx is 1 and 3*/ 18527eece5a0SKaren Higgins if (PCI_FUNC(ha->pdev->devfn) & BIT_1) 18537eece5a0SKaren Higgins fn = ISP4XXX_PCI_FN_1; 18547eece5a0SKaren Higgins 18557eece5a0SKaren Higgins other_pdev = 18567eece5a0SKaren Higgins pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 18577eece5a0SKaren Higgins ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 18587eece5a0SKaren Higgins fn)); 18597eece5a0SKaren Higgins 18607eece5a0SKaren Higgins /* Get other_ha if other_pdev is valid and state is enable*/ 18617eece5a0SKaren Higgins if (other_pdev) { 18627eece5a0SKaren Higgins if (atomic_read(&other_pdev->enable_cnt)) { 18637eece5a0SKaren Higgins other_ha = pci_get_drvdata(other_pdev); 18647eece5a0SKaren Higgins if (other_ha) { 18657eece5a0SKaren Higgins set_bit(AF_HA_REMOVAL, &other_ha->flags); 18667eece5a0SKaren Higgins DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " 18677eece5a0SKaren Higgins "Prevent %s reinit\n", __func__, 18687eece5a0SKaren Higgins dev_name(&other_ha->pdev->dev))); 18697eece5a0SKaren Higgins } 18707eece5a0SKaren Higgins } 18717eece5a0SKaren Higgins pci_dev_put(other_pdev); 18727eece5a0SKaren Higgins } 18737eece5a0SKaren Higgins } 18747eece5a0SKaren Higgins 18757eece5a0SKaren Higgins /** 1876afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1877afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1878afaf5a2dSDavid Somayajulu **/ 1879afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1880afaf5a2dSDavid Somayajulu { 1881afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1882afaf5a2dSDavid Somayajulu 1883afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1884afaf5a2dSDavid Somayajulu 18857eece5a0SKaren Higgins if (!is_qla8022(ha)) 18867eece5a0SKaren Higgins qla4xxx_prevent_other_port_reinit(ha); 1887bee4fe8eSDavid C Somayajulu 1888afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1889afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1890afaf5a2dSDavid Somayajulu 1891afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1892afaf5a2dSDavid Somayajulu 1893afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1894afaf5a2dSDavid Somayajulu 1895afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1896afaf5a2dSDavid Somayajulu 18972232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 1898f4f5df23SVikas Chaudhary pci_disable_device(pdev); 1899afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1900afaf5a2dSDavid Somayajulu } 1901afaf5a2dSDavid Somayajulu 1902afaf5a2dSDavid Somayajulu /** 1903afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1904afaf5a2dSDavid Somayajulu * @ha: HA context 1905afaf5a2dSDavid Somayajulu * 1906afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1907afaf5a2dSDavid Somayajulu * supported addressing method. 1908afaf5a2dSDavid Somayajulu */ 190947975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1910afaf5a2dSDavid Somayajulu { 1911afaf5a2dSDavid Somayajulu int retval; 1912afaf5a2dSDavid Somayajulu 1913afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 19146a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 19156a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1916afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1917afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1918afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1919afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1920284901a9SYang Hongyang DMA_BIT_MASK(32)); 1921afaf5a2dSDavid Somayajulu } 1922afaf5a2dSDavid Somayajulu } else 1923284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1924afaf5a2dSDavid Somayajulu } 1925afaf5a2dSDavid Somayajulu 1926afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1927afaf5a2dSDavid Somayajulu { 1928afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1929afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 19308bb4033dSVikas Chaudhary int queue_depth = QL4_DEF_QDEPTH; 1931afaf5a2dSDavid Somayajulu 1932afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1933afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 19348bb4033dSVikas Chaudhary 19358bb4033dSVikas Chaudhary if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU) 19368bb4033dSVikas Chaudhary queue_depth = ql4xmaxqdepth; 19378bb4033dSVikas Chaudhary 19388bb4033dSVikas Chaudhary scsi_activate_tcq(sdev, queue_depth); 1939afaf5a2dSDavid Somayajulu return 0; 1940afaf5a2dSDavid Somayajulu } 1941afaf5a2dSDavid Somayajulu 1942afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1943afaf5a2dSDavid Somayajulu { 1944afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1945afaf5a2dSDavid Somayajulu return 0; 1946afaf5a2dSDavid Somayajulu } 1947afaf5a2dSDavid Somayajulu 1948afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1949afaf5a2dSDavid Somayajulu { 1950afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1951afaf5a2dSDavid Somayajulu } 1952afaf5a2dSDavid Somayajulu 1953afaf5a2dSDavid Somayajulu /** 1954afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1955afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1956fd589a8fSAnand Gadiyar * @index: index into the active_array 1957afaf5a2dSDavid Somayajulu * 1958afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1959afaf5a2dSDavid Somayajulu **/ 1960f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 1961f4f5df23SVikas Chaudhary uint32_t index) 1962afaf5a2dSDavid Somayajulu { 1963afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 19645369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 1965afaf5a2dSDavid Somayajulu 19665369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 19675369887aSVikas Chaudhary if (!cmd) 1968afaf5a2dSDavid Somayajulu return srb; 1969afaf5a2dSDavid Somayajulu 19705369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 19715369887aSVikas Chaudhary if (!srb) 1972afaf5a2dSDavid Somayajulu return srb; 1973afaf5a2dSDavid Somayajulu 1974afaf5a2dSDavid Somayajulu /* update counters */ 1975afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1976afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1977afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1978afaf5a2dSDavid Somayajulu if (srb->cmd) 19795369887aSVikas Chaudhary srb->cmd->host_scribble = 19805369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 1981afaf5a2dSDavid Somayajulu } 1982afaf5a2dSDavid Somayajulu return srb; 1983afaf5a2dSDavid Somayajulu } 1984afaf5a2dSDavid Somayajulu 1985afaf5a2dSDavid Somayajulu /** 1986afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 198709a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 1988afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1989afaf5a2dSDavid Somayajulu * 1990afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1991afaf5a2dSDavid Somayajulu * for some max time. 1992afaf5a2dSDavid Somayajulu **/ 1993afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1994afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1995afaf5a2dSDavid Somayajulu { 1996afaf5a2dSDavid Somayajulu int done = 0; 1997afaf5a2dSDavid Somayajulu struct srb *rp; 1998afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 19992232be0dSLalit Chandivade int ret = SUCCESS; 20002232be0dSLalit Chandivade 20012232be0dSLalit Chandivade /* Dont wait on command if PCI error is being handled 20022232be0dSLalit Chandivade * by PCI AER driver 20032232be0dSLalit Chandivade */ 20042232be0dSLalit Chandivade if (unlikely(pci_channel_offline(ha->pdev)) || 20052232be0dSLalit Chandivade (test_bit(AF_EEH_BUSY, &ha->flags))) { 20062232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", 20072232be0dSLalit Chandivade ha->host_no, __func__); 20082232be0dSLalit Chandivade return ret; 20092232be0dSLalit Chandivade } 2010afaf5a2dSDavid Somayajulu 2011afaf5a2dSDavid Somayajulu do { 2012afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 20135369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 2014afaf5a2dSDavid Somayajulu if (rp == NULL) { 2015afaf5a2dSDavid Somayajulu done++; 2016afaf5a2dSDavid Somayajulu break; 2017afaf5a2dSDavid Somayajulu } 2018afaf5a2dSDavid Somayajulu 2019afaf5a2dSDavid Somayajulu msleep(2000); 2020afaf5a2dSDavid Somayajulu } while (max_wait_time--); 2021afaf5a2dSDavid Somayajulu 2022afaf5a2dSDavid Somayajulu return done; 2023afaf5a2dSDavid Somayajulu } 2024afaf5a2dSDavid Somayajulu 2025afaf5a2dSDavid Somayajulu /** 2026afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 2027afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 2028afaf5a2dSDavid Somayajulu **/ 2029afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 2030afaf5a2dSDavid Somayajulu { 2031afaf5a2dSDavid Somayajulu unsigned long wait_online; 2032afaf5a2dSDavid Somayajulu 2033f581a3f7SVikas Chaudhary wait_online = jiffies + (HBA_ONLINE_TOV * HZ); 2034afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 2035afaf5a2dSDavid Somayajulu 2036afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 2037afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 2038afaf5a2dSDavid Somayajulu 2039afaf5a2dSDavid Somayajulu msleep(2000); 2040afaf5a2dSDavid Somayajulu } 2041afaf5a2dSDavid Somayajulu 2042afaf5a2dSDavid Somayajulu return QLA_ERROR; 2043afaf5a2dSDavid Somayajulu } 2044afaf5a2dSDavid Somayajulu 2045afaf5a2dSDavid Somayajulu /** 2046ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 2047fd589a8fSAnand Gadiyar * @ha: pointer to HBA 2048afaf5a2dSDavid Somayajulu * @t: target id 2049afaf5a2dSDavid Somayajulu * @l: lun id 2050afaf5a2dSDavid Somayajulu * 2051afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 2052afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 2053afaf5a2dSDavid Somayajulu **/ 2054ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 2055ce545039SMike Christie struct scsi_target *stgt, 2056ce545039SMike Christie struct scsi_device *sdev) 2057afaf5a2dSDavid Somayajulu { 2058afaf5a2dSDavid Somayajulu int cnt; 2059afaf5a2dSDavid Somayajulu int status = 0; 2060afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 2061afaf5a2dSDavid Somayajulu 2062afaf5a2dSDavid Somayajulu /* 2063ce545039SMike Christie * Waiting for all commands for the designated target or dev 2064ce545039SMike Christie * in the active array 2065afaf5a2dSDavid Somayajulu */ 2066afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 2067afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 2068ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 2069ce545039SMike Christie (!sdev || sdev == cmd->device)) { 2070afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 2071afaf5a2dSDavid Somayajulu status++; 2072afaf5a2dSDavid Somayajulu break; 2073afaf5a2dSDavid Somayajulu } 2074afaf5a2dSDavid Somayajulu } 2075afaf5a2dSDavid Somayajulu } 2076afaf5a2dSDavid Somayajulu return status; 2077afaf5a2dSDavid Somayajulu } 2078afaf5a2dSDavid Somayajulu 2079afaf5a2dSDavid Somayajulu /** 208009a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 208109a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 208209a0f719SVikas Chaudhary * 208309a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 208409a0f719SVikas Chaudhary * command. 208509a0f719SVikas Chaudhary **/ 208609a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 208709a0f719SVikas Chaudhary { 208809a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 208909a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 209009a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 209192b3e5bbSMike Christie unsigned long flags; 209209a0f719SVikas Chaudhary struct srb *srb = NULL; 209309a0f719SVikas Chaudhary int ret = SUCCESS; 209409a0f719SVikas Chaudhary int wait = 0; 209509a0f719SVikas Chaudhary 2096c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 20975cd049a5SChristoph Hellwig "scsi%ld:%d:%d: Abort command issued cmd=%p\n", 20985cd049a5SChristoph Hellwig ha->host_no, id, lun, cmd); 209909a0f719SVikas Chaudhary 210092b3e5bbSMike Christie spin_lock_irqsave(&ha->hardware_lock, flags); 210109a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 210292b3e5bbSMike Christie if (!srb) { 210392b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 210409a0f719SVikas Chaudhary return SUCCESS; 210592b3e5bbSMike Christie } 210609a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 210792b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 210809a0f719SVikas Chaudhary 210909a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 211009a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 211109a0f719SVikas Chaudhary ha->host_no, id, lun)); 211209a0f719SVikas Chaudhary ret = FAILED; 211309a0f719SVikas Chaudhary } else { 211409a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 211509a0f719SVikas Chaudhary ha->host_no, id, lun)); 211609a0f719SVikas Chaudhary wait = 1; 211709a0f719SVikas Chaudhary } 211809a0f719SVikas Chaudhary 211909a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 212009a0f719SVikas Chaudhary 212109a0f719SVikas Chaudhary /* Wait for command to complete */ 212209a0f719SVikas Chaudhary if (wait) { 212309a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 212409a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 212509a0f719SVikas Chaudhary ha->host_no, id, lun)); 212609a0f719SVikas Chaudhary ret = FAILED; 212709a0f719SVikas Chaudhary } 212809a0f719SVikas Chaudhary } 212909a0f719SVikas Chaudhary 2130c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 213109a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 213225985edcSLucas De Marchi ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed"); 213309a0f719SVikas Chaudhary 213409a0f719SVikas Chaudhary return ret; 213509a0f719SVikas Chaudhary } 213609a0f719SVikas Chaudhary 213709a0f719SVikas Chaudhary /** 2138afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2139afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2140afaf5a2dSDavid Somayajulu * 2141afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2142afaf5a2dSDavid Somayajulu * specified target. 2143afaf5a2dSDavid Somayajulu **/ 2144afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2145afaf5a2dSDavid Somayajulu { 2146afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2147afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2148afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2149afaf5a2dSDavid Somayajulu 2150612f7348SKaren Higgins if (!ddb_entry) 2151afaf5a2dSDavid Somayajulu return ret; 2152afaf5a2dSDavid Somayajulu 2153c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2154c01be6dcSMike Christie if (ret) 2155c01be6dcSMike Christie return ret; 2156c01be6dcSMike Christie ret = FAILED; 2157c01be6dcSMike Christie 2158c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2159afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2160afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2161afaf5a2dSDavid Somayajulu 2162afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2163afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2164afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2165242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2166afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2167afaf5a2dSDavid Somayajulu 2168afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2169afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2170afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2171c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2172afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2173afaf5a2dSDavid Somayajulu } 2174afaf5a2dSDavid Somayajulu 2175ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2176ce545039SMike Christie cmd->device)) { 2177c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2178afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2179afaf5a2dSDavid Somayajulu "commands.\n"); 2180afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2181afaf5a2dSDavid Somayajulu } 2182afaf5a2dSDavid Somayajulu 21839d562913SDavid C Somayajulu /* Send marker. */ 21849d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 21859d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 21869d562913SDavid C Somayajulu goto eh_dev_reset_done; 21879d562913SDavid C Somayajulu 2188c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2189afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2190afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2191afaf5a2dSDavid Somayajulu cmd->device->lun); 2192afaf5a2dSDavid Somayajulu 2193afaf5a2dSDavid Somayajulu ret = SUCCESS; 2194afaf5a2dSDavid Somayajulu 2195afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2196afaf5a2dSDavid Somayajulu 2197afaf5a2dSDavid Somayajulu return ret; 2198afaf5a2dSDavid Somayajulu } 2199afaf5a2dSDavid Somayajulu 2200afaf5a2dSDavid Somayajulu /** 2201ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2202ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2203ce545039SMike Christie * 2204ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2205ce545039SMike Christie **/ 2206ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2207ce545039SMike Christie { 2208ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2209ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2210c01be6dcSMike Christie int stat, ret; 2211ce545039SMike Christie 2212ce545039SMike Christie if (!ddb_entry) 2213ce545039SMike Christie return FAILED; 2214ce545039SMike Christie 2215c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2216c01be6dcSMike Christie if (ret) 2217c01be6dcSMike Christie return ret; 2218c01be6dcSMike Christie 2219ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2220ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2221ce545039SMike Christie 2222ce545039SMike Christie DEBUG2(printk(KERN_INFO 2223ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2224ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2225242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2226ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2227ce545039SMike Christie 2228ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2229ce545039SMike Christie if (stat != QLA_SUCCESS) { 2230ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2231ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2232ce545039SMike Christie return FAILED; 2233ce545039SMike Christie } 2234ce545039SMike Christie 2235ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2236ce545039SMike Christie NULL)) { 2237ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2238ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2239ce545039SMike Christie "waiting for commands.\n"); 2240ce545039SMike Christie return FAILED; 2241ce545039SMike Christie } 2242ce545039SMike Christie 22439d562913SDavid C Somayajulu /* Send marker. */ 22449d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 22459d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 22469d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 22479d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 22489d562913SDavid C Somayajulu "marker iocb failed.\n"); 22499d562913SDavid C Somayajulu return FAILED; 22509d562913SDavid C Somayajulu } 22519d562913SDavid C Somayajulu 2252ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2253ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2254ce545039SMike Christie return SUCCESS; 2255ce545039SMike Christie } 2256ce545039SMike Christie 2257ce545039SMike Christie /** 2258afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2259afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2260afaf5a2dSDavid Somayajulu * 2261afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2262afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2263afaf5a2dSDavid Somayajulu **/ 2264afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2265afaf5a2dSDavid Somayajulu { 2266afaf5a2dSDavid Somayajulu int return_status = FAILED; 2267afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2268afaf5a2dSDavid Somayajulu 2269afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2270afaf5a2dSDavid Somayajulu 2271f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2272f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2273f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2274f4f5df23SVikas Chaudhary return FAILED; 2275f4f5df23SVikas Chaudhary } 2276f4f5df23SVikas Chaudhary 2277c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2278dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2279afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2280afaf5a2dSDavid Somayajulu 2281afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2282afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2283afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2284afaf5a2dSDavid Somayajulu __func__)); 2285afaf5a2dSDavid Somayajulu 2286afaf5a2dSDavid Somayajulu return FAILED; 2287afaf5a2dSDavid Somayajulu } 2288afaf5a2dSDavid Somayajulu 2289f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2290f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2291f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2292f4f5df23SVikas Chaudhary else 2293f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2294f4f5df23SVikas Chaudhary } 229550a29aecSMike Christie 2296f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2297afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2298afaf5a2dSDavid Somayajulu 2299c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 230025985edcSLucas De Marchi return_status == FAILED ? "FAILED" : "SUCCEEDED"); 2301afaf5a2dSDavid Somayajulu 2302afaf5a2dSDavid Somayajulu return return_status; 2303afaf5a2dSDavid Somayajulu } 2304afaf5a2dSDavid Somayajulu 23052232be0dSLalit Chandivade /* PCI AER driver recovers from all correctable errors w/o 23062232be0dSLalit Chandivade * driver intervention. For uncorrectable errors PCI AER 23072232be0dSLalit Chandivade * driver calls the following device driver's callbacks 23082232be0dSLalit Chandivade * 23092232be0dSLalit Chandivade * - Fatal Errors - link_reset 23102232be0dSLalit Chandivade * - Non-Fatal Errors - driver's pci_error_detected() which 23112232be0dSLalit Chandivade * returns CAN_RECOVER, NEED_RESET or DISCONNECT. 23122232be0dSLalit Chandivade * 23132232be0dSLalit Chandivade * PCI AER driver calls 23142232be0dSLalit Chandivade * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled 23152232be0dSLalit Chandivade * returns RECOVERED or NEED_RESET if fw_hung 23162232be0dSLalit Chandivade * NEED_RESET - driver's slot_reset() 23172232be0dSLalit Chandivade * DISCONNECT - device is dead & cannot recover 23182232be0dSLalit Chandivade * RECOVERED - driver's pci_resume() 23192232be0dSLalit Chandivade */ 23202232be0dSLalit Chandivade static pci_ers_result_t 23212232be0dSLalit Chandivade qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 23222232be0dSLalit Chandivade { 23232232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 23242232be0dSLalit Chandivade 23252232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", 23262232be0dSLalit Chandivade ha->host_no, __func__, state); 23272232be0dSLalit Chandivade 23282232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23292232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23302232be0dSLalit Chandivade 23312232be0dSLalit Chandivade switch (state) { 23322232be0dSLalit Chandivade case pci_channel_io_normal: 23332232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 23342232be0dSLalit Chandivade return PCI_ERS_RESULT_CAN_RECOVER; 23352232be0dSLalit Chandivade case pci_channel_io_frozen: 23362232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23372232be0dSLalit Chandivade qla4xxx_mailbox_premature_completion(ha); 23382232be0dSLalit Chandivade qla4xxx_free_irqs(ha); 23392232be0dSLalit Chandivade pci_disable_device(pdev); 23407b3595dfSVikas Chaudhary /* Return back all IOs */ 23417b3595dfSVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 23422232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23432232be0dSLalit Chandivade case pci_channel_io_perm_failure: 23442232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 23452232be0dSLalit Chandivade set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); 23462232be0dSLalit Chandivade qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 23472232be0dSLalit Chandivade return PCI_ERS_RESULT_DISCONNECT; 23482232be0dSLalit Chandivade } 23492232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 23502232be0dSLalit Chandivade } 23512232be0dSLalit Chandivade 23522232be0dSLalit Chandivade /** 23532232be0dSLalit Chandivade * qla4xxx_pci_mmio_enabled() gets called if 23542232be0dSLalit Chandivade * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER 23552232be0dSLalit Chandivade * and read/write to the device still works. 23562232be0dSLalit Chandivade **/ 23572232be0dSLalit Chandivade static pci_ers_result_t 23582232be0dSLalit Chandivade qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) 23592232be0dSLalit Chandivade { 23602232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 23612232be0dSLalit Chandivade 23622232be0dSLalit Chandivade if (!is_aer_supported(ha)) 23632232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 23642232be0dSLalit Chandivade 23652232be0dSLalit Chandivade return PCI_ERS_RESULT_RECOVERED; 23662232be0dSLalit Chandivade } 23672232be0dSLalit Chandivade 23687b3595dfSVikas Chaudhary static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) 23692232be0dSLalit Chandivade { 23702232be0dSLalit Chandivade uint32_t rval = QLA_ERROR; 23717b3595dfSVikas Chaudhary uint32_t ret = 0; 23722232be0dSLalit Chandivade int fn; 23732232be0dSLalit Chandivade struct pci_dev *other_pdev = NULL; 23742232be0dSLalit Chandivade 23752232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); 23762232be0dSLalit Chandivade 23772232be0dSLalit Chandivade set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 23782232be0dSLalit Chandivade 23792232be0dSLalit Chandivade if (test_bit(AF_ONLINE, &ha->flags)) { 23802232be0dSLalit Chandivade clear_bit(AF_ONLINE, &ha->flags); 23812232be0dSLalit Chandivade qla4xxx_mark_all_devices_missing(ha); 23822232be0dSLalit Chandivade qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 23832232be0dSLalit Chandivade } 23842232be0dSLalit Chandivade 23852232be0dSLalit Chandivade fn = PCI_FUNC(ha->pdev->devfn); 23862232be0dSLalit Chandivade while (fn > 0) { 23872232be0dSLalit Chandivade fn--; 23882232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " 23892232be0dSLalit Chandivade "func %x\n", ha->host_no, __func__, fn); 23902232be0dSLalit Chandivade /* Get the pci device given the domain, bus, 23912232be0dSLalit Chandivade * slot/function number */ 23922232be0dSLalit Chandivade other_pdev = 23932232be0dSLalit Chandivade pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 23942232be0dSLalit Chandivade ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 23952232be0dSLalit Chandivade fn)); 23962232be0dSLalit Chandivade 23972232be0dSLalit Chandivade if (!other_pdev) 23982232be0dSLalit Chandivade continue; 23992232be0dSLalit Chandivade 24002232be0dSLalit Chandivade if (atomic_read(&other_pdev->enable_cnt)) { 24012232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " 24022232be0dSLalit Chandivade "func in enabled state%x\n", ha->host_no, 24032232be0dSLalit Chandivade __func__, fn); 24042232be0dSLalit Chandivade pci_dev_put(other_pdev); 24052232be0dSLalit Chandivade break; 24062232be0dSLalit Chandivade } 24072232be0dSLalit Chandivade pci_dev_put(other_pdev); 24082232be0dSLalit Chandivade } 24092232be0dSLalit Chandivade 24102232be0dSLalit Chandivade /* The first function on the card, the reset owner will 24112232be0dSLalit Chandivade * start & initialize the firmware. The other functions 24122232be0dSLalit Chandivade * on the card will reset the firmware context 24132232be0dSLalit Chandivade */ 24142232be0dSLalit Chandivade if (!fn) { 24152232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " 24162232be0dSLalit Chandivade "0x%x is the owner\n", ha->host_no, __func__, 24172232be0dSLalit Chandivade ha->pdev->devfn); 24182232be0dSLalit Chandivade 24192232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24202232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24212232be0dSLalit Chandivade QLA82XX_DEV_COLD); 24222232be0dSLalit Chandivade 24232232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, 24242232be0dSLalit Chandivade QLA82XX_IDC_VERSION); 24252232be0dSLalit Chandivade 24262232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24272232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24282232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 24292232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24302232be0dSLalit Chandivade 24312232be0dSLalit Chandivade if (rval != QLA_SUCCESS) { 24322232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24332232be0dSLalit Chandivade "FAILED\n", ha->host_no, __func__); 24342232be0dSLalit Chandivade qla4_8xxx_clear_drv_active(ha); 24352232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24362232be0dSLalit Chandivade QLA82XX_DEV_FAILED); 24372232be0dSLalit Chandivade } else { 24382232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 24392232be0dSLalit Chandivade "READY\n", ha->host_no, __func__); 24402232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 24412232be0dSLalit Chandivade QLA82XX_DEV_READY); 24422232be0dSLalit Chandivade /* Clear driver state register */ 24432232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); 24442232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24457b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24467b3595dfSVikas Chaudhary if (ret) { 24477b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to " 24487b3595dfSVikas Chaudhary "reserve interrupt %d already in use.\n", 24497b3595dfSVikas Chaudhary ha->pdev->irq); 24507b3595dfSVikas Chaudhary rval = QLA_ERROR; 24517b3595dfSVikas Chaudhary } else { 24522232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24537b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24547b3595dfSVikas Chaudhary } 24552232be0dSLalit Chandivade } 24562232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24572232be0dSLalit Chandivade } else { 24582232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " 24592232be0dSLalit Chandivade "the reset owner\n", ha->host_no, __func__, 24602232be0dSLalit Chandivade ha->pdev->devfn); 24612232be0dSLalit Chandivade if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == 24622232be0dSLalit Chandivade QLA82XX_DEV_READY)) { 24632232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 24642232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, 24652232be0dSLalit Chandivade PRESERVE_DDB_LIST); 24667b3595dfSVikas Chaudhary if (rval == QLA_SUCCESS) { 24677b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 24687b3595dfSVikas Chaudhary if (ret) { 24697b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to" 24707b3595dfSVikas Chaudhary " reserve interrupt %d already in" 24717b3595dfSVikas Chaudhary " use.\n", ha->pdev->irq); 24727b3595dfSVikas Chaudhary rval = QLA_ERROR; 24737b3595dfSVikas Chaudhary } else { 24742232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 24757b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 24767b3595dfSVikas Chaudhary } 24777b3595dfSVikas Chaudhary } 24782232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 24792232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 24802232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 24812232be0dSLalit Chandivade } 24822232be0dSLalit Chandivade } 24832232be0dSLalit Chandivade clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 24842232be0dSLalit Chandivade return rval; 24852232be0dSLalit Chandivade } 24862232be0dSLalit Chandivade 24872232be0dSLalit Chandivade static pci_ers_result_t 24882232be0dSLalit Chandivade qla4xxx_pci_slot_reset(struct pci_dev *pdev) 24892232be0dSLalit Chandivade { 24902232be0dSLalit Chandivade pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; 24912232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 24922232be0dSLalit Chandivade int rc; 24932232be0dSLalit Chandivade 24942232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", 24952232be0dSLalit Chandivade ha->host_no, __func__); 24962232be0dSLalit Chandivade 24972232be0dSLalit Chandivade if (!is_aer_supported(ha)) 24982232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 24992232be0dSLalit Chandivade 25002232be0dSLalit Chandivade /* Restore the saved state of PCIe device - 25012232be0dSLalit Chandivade * BAR registers, PCI Config space, PCIX, MSI, 25022232be0dSLalit Chandivade * IOV states 25032232be0dSLalit Chandivade */ 25042232be0dSLalit Chandivade pci_restore_state(pdev); 25052232be0dSLalit Chandivade 25062232be0dSLalit Chandivade /* pci_restore_state() clears the saved_state flag of the device 25072232be0dSLalit Chandivade * save restored state which resets saved_state flag 25082232be0dSLalit Chandivade */ 25092232be0dSLalit Chandivade pci_save_state(pdev); 25102232be0dSLalit Chandivade 25112232be0dSLalit Chandivade /* Initialize device or resume if in suspended state */ 25122232be0dSLalit Chandivade rc = pci_enable_device(pdev); 25132232be0dSLalit Chandivade if (rc) { 251425985edcSLucas De Marchi ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable " 25152232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__); 25162232be0dSLalit Chandivade goto exit_slot_reset; 25172232be0dSLalit Chandivade } 25182232be0dSLalit Chandivade 25197b3595dfSVikas Chaudhary ha->isp_ops->disable_intrs(ha); 25202232be0dSLalit Chandivade 25212232be0dSLalit Chandivade if (is_qla8022(ha)) { 25222232be0dSLalit Chandivade if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { 25232232be0dSLalit Chandivade ret = PCI_ERS_RESULT_RECOVERED; 25242232be0dSLalit Chandivade goto exit_slot_reset; 25252232be0dSLalit Chandivade } else 25262232be0dSLalit Chandivade goto exit_slot_reset; 25272232be0dSLalit Chandivade } 25282232be0dSLalit Chandivade 25292232be0dSLalit Chandivade exit_slot_reset: 25302232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" 25312232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__, ret); 25322232be0dSLalit Chandivade return ret; 25332232be0dSLalit Chandivade } 25342232be0dSLalit Chandivade 25352232be0dSLalit Chandivade static void 25362232be0dSLalit Chandivade qla4xxx_pci_resume(struct pci_dev *pdev) 25372232be0dSLalit Chandivade { 25382232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 25392232be0dSLalit Chandivade int ret; 25402232be0dSLalit Chandivade 25412232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", 25422232be0dSLalit Chandivade ha->host_no, __func__); 25432232be0dSLalit Chandivade 25442232be0dSLalit Chandivade ret = qla4xxx_wait_for_hba_online(ha); 25452232be0dSLalit Chandivade if (ret != QLA_SUCCESS) { 25462232be0dSLalit Chandivade ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " 25472232be0dSLalit Chandivade "resume I/O from slot/link_reset\n", ha->host_no, 25482232be0dSLalit Chandivade __func__); 25492232be0dSLalit Chandivade } 25502232be0dSLalit Chandivade 25512232be0dSLalit Chandivade pci_cleanup_aer_uncorrect_error_status(pdev); 25522232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 25532232be0dSLalit Chandivade } 25542232be0dSLalit Chandivade 25552232be0dSLalit Chandivade static struct pci_error_handlers qla4xxx_err_handler = { 25562232be0dSLalit Chandivade .error_detected = qla4xxx_pci_error_detected, 25572232be0dSLalit Chandivade .mmio_enabled = qla4xxx_pci_mmio_enabled, 25582232be0dSLalit Chandivade .slot_reset = qla4xxx_pci_slot_reset, 25592232be0dSLalit Chandivade .resume = qla4xxx_pci_resume, 25602232be0dSLalit Chandivade }; 25612232be0dSLalit Chandivade 2562afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2563afaf5a2dSDavid Somayajulu { 2564afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2565afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2566afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2567afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2568afaf5a2dSDavid Somayajulu }, 2569afaf5a2dSDavid Somayajulu { 2570afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2571afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2572afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2573afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2574afaf5a2dSDavid Somayajulu }, 2575d915058fSDavid C Somayajulu { 2576d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2577d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2578d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2579d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2580d915058fSDavid C Somayajulu }, 2581f4f5df23SVikas Chaudhary { 2582f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2583f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2584f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2585f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2586f4f5df23SVikas Chaudhary }, 2587afaf5a2dSDavid Somayajulu {0, 0}, 2588afaf5a2dSDavid Somayajulu }; 2589afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2590afaf5a2dSDavid Somayajulu 259147975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2592afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2593afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2594afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2595afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 25962232be0dSLalit Chandivade .err_handler = &qla4xxx_err_handler, 2597afaf5a2dSDavid Somayajulu }; 2598afaf5a2dSDavid Somayajulu 2599afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2600afaf5a2dSDavid Somayajulu { 2601afaf5a2dSDavid Somayajulu int ret; 2602afaf5a2dSDavid Somayajulu 2603afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2604afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 260520c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2606afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2607afaf5a2dSDavid Somayajulu printk(KERN_ERR 2608afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2609afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2610afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2611afaf5a2dSDavid Somayajulu goto no_srp_cache; 2612afaf5a2dSDavid Somayajulu } 2613afaf5a2dSDavid Somayajulu 2614afaf5a2dSDavid Somayajulu /* Derive version string. */ 2615afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 261611010fecSAndrew Vasquez if (ql4xextended_error_logging) 2617afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2618afaf5a2dSDavid Somayajulu 2619afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2620afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2621afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2622afaf5a2dSDavid Somayajulu ret = -ENODEV; 2623afaf5a2dSDavid Somayajulu goto release_srb_cache; 2624afaf5a2dSDavid Somayajulu } 2625afaf5a2dSDavid Somayajulu 2626afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2627afaf5a2dSDavid Somayajulu if (ret) 2628afaf5a2dSDavid Somayajulu goto unregister_transport; 2629afaf5a2dSDavid Somayajulu 2630afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2631afaf5a2dSDavid Somayajulu return 0; 26325ae16db3SDoug Maxey 2633afaf5a2dSDavid Somayajulu unregister_transport: 2634afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2635afaf5a2dSDavid Somayajulu release_srb_cache: 2636afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2637afaf5a2dSDavid Somayajulu no_srp_cache: 2638afaf5a2dSDavid Somayajulu return ret; 2639afaf5a2dSDavid Somayajulu } 2640afaf5a2dSDavid Somayajulu 2641afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2642afaf5a2dSDavid Somayajulu { 2643afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2644afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2645afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2646afaf5a2dSDavid Somayajulu } 2647afaf5a2dSDavid Somayajulu 2648afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2649afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2650afaf5a2dSDavid Somayajulu 2651afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2652afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2653afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2654afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2655