1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 3afaf5a2dSDavid Somayajulu * Copyright (c) 2003-2006 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 85a0e3ad6STejun Heo #include <linux/slab.h> 9afaf5a2dSDavid Somayajulu 10afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 11afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 12afaf5a2dSDavid Somayajulu 13afaf5a2dSDavid Somayajulu #include "ql4_def.h" 14bee4fe8eSDavid C Somayajulu #include "ql4_version.h" 15bee4fe8eSDavid C Somayajulu #include "ql4_glbl.h" 16bee4fe8eSDavid C Somayajulu #include "ql4_dbg.h" 17bee4fe8eSDavid C Somayajulu #include "ql4_inline.h" 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * Driver version 21afaf5a2dSDavid Somayajulu */ 2247975477SAdrian Bunk static char qla4xxx_version_str[40]; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * SRB allocation cache 26afaf5a2dSDavid Somayajulu */ 27e18b890bSChristoph Lameter static struct kmem_cache *srb_cachep; 28afaf5a2dSDavid Somayajulu 29afaf5a2dSDavid Somayajulu /* 30afaf5a2dSDavid Somayajulu * Module parameter information and variables 31afaf5a2dSDavid Somayajulu */ 32afaf5a2dSDavid Somayajulu int ql4xdiscoverywait = 60; 33afaf5a2dSDavid Somayajulu module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); 35afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 36afaf5a2dSDavid Somayajulu module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR); 37afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 38afaf5a2dSDavid Somayajulu "Dont reset the HBA when the driver gets 0x8002 AEN " 39afaf5a2dSDavid Somayajulu " default it will reset hba :0" 40afaf5a2dSDavid Somayajulu " set to 1 to avoid resetting HBA"); 41afaf5a2dSDavid Somayajulu 4211010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 4311010fecSAndrew Vasquez module_param(ql4xextended_error_logging, int, S_IRUGO | S_IRUSR); 4411010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 45afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 46afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 47afaf5a2dSDavid Somayajulu 48477ffb9dSDavid C Somayajulu int ql4_mod_unload = 0; 49477ffb9dSDavid C Somayajulu 50d510d965SMike Christie #define QL4_DEF_QDEPTH 32 51d510d965SMike Christie 52afaf5a2dSDavid Somayajulu /* 53afaf5a2dSDavid Somayajulu * SCSI host template entry points 54afaf5a2dSDavid Somayajulu */ 5547975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 56afaf5a2dSDavid Somayajulu 57afaf5a2dSDavid Somayajulu /* 58afaf5a2dSDavid Somayajulu * iSCSI template entry points 59afaf5a2dSDavid Somayajulu */ 602174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 612174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 622174a04eSMike Christie struct sockaddr *dst_addr); 63afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 64afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 65afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 66afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 67aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 68aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 69afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 705c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 71afaf5a2dSDavid Somayajulu 72afaf5a2dSDavid Somayajulu /* 73afaf5a2dSDavid Somayajulu * SCSI host template entry points 74afaf5a2dSDavid Somayajulu */ 75afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 76afaf5a2dSDavid Somayajulu void (*done) (struct scsi_cmnd *)); 77afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 78ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 79afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 80afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 81afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 82afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 83024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 84afaf5a2dSDavid Somayajulu 85afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 86afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 87afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 88afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 89afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 90afaf5a2dSDavid Somayajulu 91afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 92ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 93afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 945c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 95afaf5a2dSDavid Somayajulu 96afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 97afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 98afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 99afaf5a2dSDavid Somayajulu 100921601b7SMike Christie .scan_finished = iscsi_scan_finished, 101024f801fSMike Christie .scan_start = qla4xxx_scan_start, 102921601b7SMike Christie 103afaf5a2dSDavid Somayajulu .this_id = -1, 104afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 105afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 106afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 107afaf5a2dSDavid Somayajulu 108afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 109afaf5a2dSDavid Somayajulu }; 110afaf5a2dSDavid Somayajulu 111afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 112afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 113afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 114d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 115d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 116aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 117aa1e93a2SMike Christie ISCSI_TARGET_NAME | ISCSI_TPGT, 1188ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 11922236961SMike Christie ISCSI_HOST_IPADDRESS | 1208ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 121afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 122afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 123afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 124aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 125afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 126afaf5a2dSDavid Somayajulu }; 127afaf5a2dSDavid Somayajulu 128afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 129afaf5a2dSDavid Somayajulu 1305c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1315c656af7SMike Christie { 1325c656af7SMike Christie struct iscsi_cls_session *session; 1335c656af7SMike Christie struct ddb_entry *ddb_entry; 1345c656af7SMike Christie 1355c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1365c656af7SMike Christie ddb_entry = session->dd_data; 1375c656af7SMike Christie 1385c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1395c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1405c656af7SMike Christie return BLK_EH_RESET_TIMER; 1415c656af7SMike Christie else 1425c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1435c656af7SMike Christie } 1445c656af7SMike Christie 145afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 146afaf5a2dSDavid Somayajulu { 147afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 148afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 149afaf5a2dSDavid Somayajulu 150568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 151afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 152afaf5a2dSDavid Somayajulu 153568d303bSMike Christie DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count " 154568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 155568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 156568d303bSMike Christie ha->port_down_retry_count)); 157568d303bSMike Christie 158568d303bSMike Christie DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc " 159568d303bSMike Christie "flags = 0x%lx\n", 160568d303bSMike Christie ha->host_no, __func__, ha->dpc_flags)); 161afaf5a2dSDavid Somayajulu queue_work(ha->dpc_thread, &ha->dpc_work); 162afaf5a2dSDavid Somayajulu } 163568d303bSMike Christie } 164afaf5a2dSDavid Somayajulu 165aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 166aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 167aa1e93a2SMike Christie { 168aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 169aa1e93a2SMike Christie int len; 170aa1e93a2SMike Christie 171aa1e93a2SMike Christie switch (param) { 172aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1737ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 174aa1e93a2SMike Christie break; 17522236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 17622236961SMike Christie len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], 17722236961SMike Christie ha->ip_address[1], ha->ip_address[2], 17822236961SMike Christie ha->ip_address[3]); 17922236961SMike Christie break; 1808ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 18122236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1828ad5781aSMike Christie break; 183aa1e93a2SMike Christie default: 184aa1e93a2SMike Christie return -ENOSYS; 185aa1e93a2SMike Christie } 186aa1e93a2SMike Christie 187aa1e93a2SMike Christie return len; 188aa1e93a2SMike Christie } 189aa1e93a2SMike Christie 190afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 191afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 192afaf5a2dSDavid Somayajulu { 193afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 194afaf5a2dSDavid Somayajulu int len; 195afaf5a2dSDavid Somayajulu 196afaf5a2dSDavid Somayajulu switch (param) { 197afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 198afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 199afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 200afaf5a2dSDavid Somayajulu break; 201afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 202afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 203afaf5a2dSDavid Somayajulu break; 204afaf5a2dSDavid Somayajulu default: 205afaf5a2dSDavid Somayajulu return -ENOSYS; 206afaf5a2dSDavid Somayajulu } 207afaf5a2dSDavid Somayajulu 208afaf5a2dSDavid Somayajulu return len; 209afaf5a2dSDavid Somayajulu } 210afaf5a2dSDavid Somayajulu 211afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 212afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 213afaf5a2dSDavid Somayajulu { 214afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 215afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 216afaf5a2dSDavid Somayajulu int len; 217afaf5a2dSDavid Somayajulu 218afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 219afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 220afaf5a2dSDavid Somayajulu 221afaf5a2dSDavid Somayajulu switch (param) { 222afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 223afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 224afaf5a2dSDavid Somayajulu break; 225afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 226afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 22763779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 228afaf5a2dSDavid Somayajulu break; 229afaf5a2dSDavid Somayajulu default: 230afaf5a2dSDavid Somayajulu return -ENOSYS; 231afaf5a2dSDavid Somayajulu } 232afaf5a2dSDavid Somayajulu 233afaf5a2dSDavid Somayajulu return len; 234afaf5a2dSDavid Somayajulu } 235afaf5a2dSDavid Somayajulu 2362174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 2372174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 2382174a04eSMike Christie struct sockaddr *dst_addr) 239afaf5a2dSDavid Somayajulu { 240afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 241afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 242afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 243afaf5a2dSDavid Somayajulu int ret = 0; 244afaf5a2dSDavid Somayajulu 245afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 246afaf5a2dSDavid Somayajulu 247afaf5a2dSDavid Somayajulu switch (type) { 248afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 249afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 250afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 251afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 252afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 253afaf5a2dSDavid Somayajulu ret = -EIO; 254afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 255afaf5a2dSDavid Somayajulu /* 256afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 257afaf5a2dSDavid Somayajulu */ 258afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 259afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 260afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 261afaf5a2dSDavid Somayajulu ret = -EIO; 262afaf5a2dSDavid Somayajulu } else 263afaf5a2dSDavid Somayajulu ret = -ENOSYS; 264afaf5a2dSDavid Somayajulu break; 265afaf5a2dSDavid Somayajulu default: 266afaf5a2dSDavid Somayajulu ret = -ENOSYS; 267afaf5a2dSDavid Somayajulu } 268afaf5a2dSDavid Somayajulu return ret; 269afaf5a2dSDavid Somayajulu } 270afaf5a2dSDavid Somayajulu 271afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 272afaf5a2dSDavid Somayajulu { 273afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 274afaf5a2dSDavid Somayajulu return; 275afaf5a2dSDavid Somayajulu 276afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 27726974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 278afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 279afaf5a2dSDavid Somayajulu } 280afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 281afaf5a2dSDavid Somayajulu } 282afaf5a2dSDavid Somayajulu 283afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 284afaf5a2dSDavid Somayajulu { 285afaf5a2dSDavid Somayajulu int err; 286afaf5a2dSDavid Somayajulu 28726974789SMike Christie ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; 288afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 289afaf5a2dSDavid Somayajulu if (err) { 290afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 291afaf5a2dSDavid Somayajulu return err; 292afaf5a2dSDavid Somayajulu } 293afaf5a2dSDavid Somayajulu 2945d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 295afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 296afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 297afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 298afaf5a2dSDavid Somayajulu return -ENOMEM; 299afaf5a2dSDavid Somayajulu } 300b635930dSMike Christie 301b635930dSMike Christie /* finally ready to go */ 302b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 303afaf5a2dSDavid Somayajulu return 0; 304afaf5a2dSDavid Somayajulu } 305afaf5a2dSDavid Somayajulu 306afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 307afaf5a2dSDavid Somayajulu { 308afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 309afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 310afaf5a2dSDavid Somayajulu 3115d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 3125d91e209SMike Christie sizeof(struct ddb_entry)); 313afaf5a2dSDavid Somayajulu if (!sess) 314afaf5a2dSDavid Somayajulu return NULL; 315afaf5a2dSDavid Somayajulu 316afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 317afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 318afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 319afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 320afaf5a2dSDavid Somayajulu return ddb_entry; 321afaf5a2dSDavid Somayajulu } 322afaf5a2dSDavid Somayajulu 323024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 324024f801fSMike Christie { 325024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 326024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 327024f801fSMike Christie 328024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 329024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 330024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 331024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 332024f801fSMike Christie } 333024f801fSMike Christie } 334024f801fSMike Christie 335afaf5a2dSDavid Somayajulu /* 336afaf5a2dSDavid Somayajulu * Timer routines 337afaf5a2dSDavid Somayajulu */ 338afaf5a2dSDavid Somayajulu 339afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 340afaf5a2dSDavid Somayajulu unsigned long interval) 341afaf5a2dSDavid Somayajulu { 342afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 343afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 344afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 345afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 346afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 347afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 348afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 349afaf5a2dSDavid Somayajulu ha->timer_active = 1; 350afaf5a2dSDavid Somayajulu } 351afaf5a2dSDavid Somayajulu 352afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 353afaf5a2dSDavid Somayajulu { 354afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 355afaf5a2dSDavid Somayajulu ha->timer_active = 0; 356afaf5a2dSDavid Somayajulu } 357afaf5a2dSDavid Somayajulu 358afaf5a2dSDavid Somayajulu /*** 359afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 360afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 361afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 362afaf5a2dSDavid Somayajulu * 363afaf5a2dSDavid Somayajulu * This routine marks a device missing and resets the relogin retry count. 364afaf5a2dSDavid Somayajulu **/ 365afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 366afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 367afaf5a2dSDavid Somayajulu { 368afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 369afaf5a2dSDavid Somayajulu DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", 370afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, ddb_entry->target, 371afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 372b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 373e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 374afaf5a2dSDavid Somayajulu } 375afaf5a2dSDavid Somayajulu 376afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 377afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 378afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 379afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 380afaf5a2dSDavid Somayajulu { 381afaf5a2dSDavid Somayajulu struct srb *srb; 382afaf5a2dSDavid Somayajulu 383afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 384afaf5a2dSDavid Somayajulu if (!srb) 385afaf5a2dSDavid Somayajulu return srb; 386afaf5a2dSDavid Somayajulu 387afaf5a2dSDavid Somayajulu atomic_set(&srb->ref_count, 1); 388afaf5a2dSDavid Somayajulu srb->ha = ha; 389afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 390afaf5a2dSDavid Somayajulu srb->cmd = cmd; 391afaf5a2dSDavid Somayajulu srb->flags = 0; 392afaf5a2dSDavid Somayajulu cmd->SCp.ptr = (void *)srb; 393afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 394afaf5a2dSDavid Somayajulu 395afaf5a2dSDavid Somayajulu return srb; 396afaf5a2dSDavid Somayajulu } 397afaf5a2dSDavid Somayajulu 398afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 399afaf5a2dSDavid Somayajulu { 400afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 401afaf5a2dSDavid Somayajulu 402afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 4035f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 404afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 405afaf5a2dSDavid Somayajulu } 406afaf5a2dSDavid Somayajulu cmd->SCp.ptr = NULL; 407afaf5a2dSDavid Somayajulu } 408afaf5a2dSDavid Somayajulu 409afaf5a2dSDavid Somayajulu void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) 410afaf5a2dSDavid Somayajulu { 411afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 412afaf5a2dSDavid Somayajulu 413afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 414afaf5a2dSDavid Somayajulu 415afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 416afaf5a2dSDavid Somayajulu 417afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 418afaf5a2dSDavid Somayajulu } 419afaf5a2dSDavid Somayajulu 420afaf5a2dSDavid Somayajulu /** 421afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 422afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 423afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 424afaf5a2dSDavid Somayajulu * that the command has been processed. 425afaf5a2dSDavid Somayajulu * 426afaf5a2dSDavid Somayajulu * Remarks: 427afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 428afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 429afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 430afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 431afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 432afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 433afaf5a2dSDavid Somayajulu **/ 434afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 435afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 436afaf5a2dSDavid Somayajulu { 437afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 438afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 4397fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 440afaf5a2dSDavid Somayajulu struct srb *srb; 441afaf5a2dSDavid Somayajulu int rval; 442afaf5a2dSDavid Somayajulu 4437fb1921bSMike Christie if (!sess) { 4447fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 4457fb1921bSMike Christie goto qc_fail_command; 4467fb1921bSMike Christie } 4477fb1921bSMike Christie 4487fb1921bSMike Christie rval = iscsi_session_chkready(sess); 4497fb1921bSMike Christie if (rval) { 4507fb1921bSMike Christie cmd->result = rval; 4517fb1921bSMike Christie goto qc_fail_command; 4527fb1921bSMike Christie } 4537fb1921bSMike Christie 454afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 455afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 456afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 457afaf5a2dSDavid Somayajulu goto qc_fail_command; 458afaf5a2dSDavid Somayajulu } 459c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 460afaf5a2dSDavid Somayajulu } 461afaf5a2dSDavid Somayajulu 462477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) 463477ffb9dSDavid C Somayajulu goto qc_host_busy; 464477ffb9dSDavid C Somayajulu 465afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 466afaf5a2dSDavid Somayajulu 467afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 468afaf5a2dSDavid Somayajulu if (!srb) 469afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 470afaf5a2dSDavid Somayajulu 471afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 472afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 473afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 474afaf5a2dSDavid Somayajulu 475afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 476afaf5a2dSDavid Somayajulu return 0; 477afaf5a2dSDavid Somayajulu 478afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 479afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 480afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 481afaf5a2dSDavid Somayajulu 482afaf5a2dSDavid Somayajulu qc_host_busy_lock: 483afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 484afaf5a2dSDavid Somayajulu 485afaf5a2dSDavid Somayajulu qc_host_busy: 486afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 487afaf5a2dSDavid Somayajulu 488afaf5a2dSDavid Somayajulu qc_fail_command: 489afaf5a2dSDavid Somayajulu done(cmd); 490afaf5a2dSDavid Somayajulu 491afaf5a2dSDavid Somayajulu return 0; 492afaf5a2dSDavid Somayajulu } 493afaf5a2dSDavid Somayajulu 494afaf5a2dSDavid Somayajulu /** 495afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 496afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 497afaf5a2dSDavid Somayajulu * 498afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 499afaf5a2dSDavid Somayajulu **/ 500afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 501afaf5a2dSDavid Somayajulu { 502afaf5a2dSDavid Somayajulu if (ha->queues) 503afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 504afaf5a2dSDavid Somayajulu ha->queues_dma); 505afaf5a2dSDavid Somayajulu 506afaf5a2dSDavid Somayajulu ha->queues_len = 0; 507afaf5a2dSDavid Somayajulu ha->queues = NULL; 508afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 509afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 510afaf5a2dSDavid Somayajulu ha->request_dma = 0; 511afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 512afaf5a2dSDavid Somayajulu ha->response_dma = 0; 513afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 514afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 515afaf5a2dSDavid Somayajulu 516afaf5a2dSDavid Somayajulu /* Free srb pool. */ 517afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 518afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 519afaf5a2dSDavid Somayajulu 520afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 521afaf5a2dSDavid Somayajulu 522afaf5a2dSDavid Somayajulu /* release io space registers */ 523afaf5a2dSDavid Somayajulu if (ha->reg) 524afaf5a2dSDavid Somayajulu iounmap(ha->reg); 525afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 526afaf5a2dSDavid Somayajulu } 527afaf5a2dSDavid Somayajulu 528afaf5a2dSDavid Somayajulu /** 529afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 530afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 531afaf5a2dSDavid Somayajulu * 532afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 533afaf5a2dSDavid Somayajulu * for srbs. 534afaf5a2dSDavid Somayajulu **/ 535afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 536afaf5a2dSDavid Somayajulu { 537afaf5a2dSDavid Somayajulu unsigned long align; 538afaf5a2dSDavid Somayajulu 539afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 540afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 541afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 542afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 543afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 544afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 545afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 546afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 547afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 548afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 549afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 550afaf5a2dSDavid Somayajulu 551afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 552afaf5a2dSDavid Somayajulu } 553afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 554afaf5a2dSDavid Somayajulu 555afaf5a2dSDavid Somayajulu /* 556afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 557afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 558afaf5a2dSDavid Somayajulu */ 559afaf5a2dSDavid Somayajulu align = 0; 560afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 561afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 562afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 563afaf5a2dSDavid Somayajulu 564afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 565afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 566afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 567afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 568afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 569afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 570afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 571afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 572afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 573afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 574afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 575afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 576afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 577afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 578afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 579afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 580afaf5a2dSDavid Somayajulu 581afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 582afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 583afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 584afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 585afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 586afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 587afaf5a2dSDavid Somayajulu 588afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 589afaf5a2dSDavid Somayajulu } 590afaf5a2dSDavid Somayajulu 591afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 592afaf5a2dSDavid Somayajulu 593afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 594afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 595afaf5a2dSDavid Somayajulu return QLA_ERROR; 596afaf5a2dSDavid Somayajulu } 597afaf5a2dSDavid Somayajulu 598afaf5a2dSDavid Somayajulu /** 599afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 600afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 601afaf5a2dSDavid Somayajulu **/ 602afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 603afaf5a2dSDavid Somayajulu { 604afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 605afaf5a2dSDavid Somayajulu int start_dpc = 0; 606afaf5a2dSDavid Somayajulu 607afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 608afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 609afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 610afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 611afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 612afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 613afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 614afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 615afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 616afaf5a2dSDavid Somayajulu == 0) { 617afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 618afaf5a2dSDavid Somayajulu retry_relogin_timer, 619afaf5a2dSDavid Somayajulu INVALID_ENTRY); 620afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 621afaf5a2dSDavid Somayajulu &ha->dpc_flags); 622afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 623afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: index [%d]" 624afaf5a2dSDavid Somayajulu " login device\n", 625afaf5a2dSDavid Somayajulu ha->host_no, __func__, 626afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 627afaf5a2dSDavid Somayajulu } else 628afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 629afaf5a2dSDavid Somayajulu retry_relogin_timer); 630afaf5a2dSDavid Somayajulu } 631afaf5a2dSDavid Somayajulu } 632afaf5a2dSDavid Somayajulu 633afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 634afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 635afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 636afaf5a2dSDavid Somayajulu /* 637afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 638afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 639afaf5a2dSDavid Somayajulu */ 640afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 641afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 642afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 643afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 644afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 645afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 646afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: index[%d] relogin" 647afaf5a2dSDavid Somayajulu " timed out-retrying" 648afaf5a2dSDavid Somayajulu " relogin (%d)\n", 649afaf5a2dSDavid Somayajulu ha->host_no, 650afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 651afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 652afaf5a2dSDavid Somayajulu relogin_retry_count)) 653afaf5a2dSDavid Somayajulu ); 654afaf5a2dSDavid Somayajulu start_dpc++; 655afaf5a2dSDavid Somayajulu DEBUG(printk("scsi%ld:%d:%d: index [%d] " 656afaf5a2dSDavid Somayajulu "initate relogin after" 657afaf5a2dSDavid Somayajulu " %d seconds\n", 658afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 659afaf5a2dSDavid Somayajulu ddb_entry->target, 660afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 661afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 662afaf5a2dSDavid Somayajulu ); 663afaf5a2dSDavid Somayajulu 664afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 665afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 666afaf5a2dSDavid Somayajulu } 667afaf5a2dSDavid Somayajulu } 668afaf5a2dSDavid Somayajulu } 669afaf5a2dSDavid Somayajulu 670afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 671afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 672afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 673afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 674afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 675afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 676afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 677afaf5a2dSDavid Somayajulu } 678afaf5a2dSDavid Somayajulu 679afaf5a2dSDavid Somayajulu 680afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 681afaf5a2dSDavid Somayajulu if ((start_dpc || 682afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 683afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 684afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 685afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || 686afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 687afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 688afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 689afaf5a2dSDavid Somayajulu ha->dpc_thread) { 690afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 691afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 692afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 693afaf5a2dSDavid Somayajulu queue_work(ha->dpc_thread, &ha->dpc_work); 694afaf5a2dSDavid Somayajulu } 695afaf5a2dSDavid Somayajulu 696afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 697afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 698afaf5a2dSDavid Somayajulu 699afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 700afaf5a2dSDavid Somayajulu } 701afaf5a2dSDavid Somayajulu 702afaf5a2dSDavid Somayajulu /** 703afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 704afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 705afaf5a2dSDavid Somayajulu * 706afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 707afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 708afaf5a2dSDavid Somayajulu **/ 709afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 710afaf5a2dSDavid Somayajulu { 711afaf5a2dSDavid Somayajulu uint32_t index = 0; 712afaf5a2dSDavid Somayajulu int stat = QLA_SUCCESS; 713afaf5a2dSDavid Somayajulu unsigned long flags; 714afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 715afaf5a2dSDavid Somayajulu int wait_cnt = WAIT_CMD_TOV; /* 716afaf5a2dSDavid Somayajulu * Initialized for 30 seconds as we 717afaf5a2dSDavid Somayajulu * expect all commands to retuned 718afaf5a2dSDavid Somayajulu * ASAP. 719afaf5a2dSDavid Somayajulu */ 720afaf5a2dSDavid Somayajulu 721afaf5a2dSDavid Somayajulu while (wait_cnt) { 722afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 723afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 724afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 725afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 726afaf5a2dSDavid Somayajulu if (cmd != NULL) 727afaf5a2dSDavid Somayajulu break; 728afaf5a2dSDavid Somayajulu } 729afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 730afaf5a2dSDavid Somayajulu 731afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 732afaf5a2dSDavid Somayajulu if (index == ha->host->can_queue) { 733afaf5a2dSDavid Somayajulu break; 734afaf5a2dSDavid Somayajulu } 735afaf5a2dSDavid Somayajulu 736afaf5a2dSDavid Somayajulu /* If we timed out on waiting for commands to come back 737afaf5a2dSDavid Somayajulu * return ERROR. 738afaf5a2dSDavid Somayajulu */ 739afaf5a2dSDavid Somayajulu wait_cnt--; 740afaf5a2dSDavid Somayajulu if (wait_cnt == 0) 741afaf5a2dSDavid Somayajulu stat = QLA_ERROR; 742afaf5a2dSDavid Somayajulu else { 743afaf5a2dSDavid Somayajulu msleep(1000); 744afaf5a2dSDavid Somayajulu } 745afaf5a2dSDavid Somayajulu } /* End of While (wait_cnt) */ 746afaf5a2dSDavid Somayajulu 747afaf5a2dSDavid Somayajulu return stat; 748afaf5a2dSDavid Somayajulu } 749afaf5a2dSDavid Somayajulu 750bee4fe8eSDavid C Somayajulu void qla4xxx_hw_reset(struct scsi_qla_host *ha) 751afaf5a2dSDavid Somayajulu { 752afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 753477ffb9dSDavid C Somayajulu unsigned long flags = 0; 754477ffb9dSDavid C Somayajulu 755477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 756afaf5a2dSDavid Somayajulu 757afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 758afaf5a2dSDavid Somayajulu 759afaf5a2dSDavid Somayajulu /* 760afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 761afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 762afaf5a2dSDavid Somayajulu */ 763afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 764afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 765afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 766afaf5a2dSDavid Somayajulu 767afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 768afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 769afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 770afaf5a2dSDavid Somayajulu 771afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 772477ffb9dSDavid C Somayajulu } 773477ffb9dSDavid C Somayajulu 774477ffb9dSDavid C Somayajulu /** 775477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 776477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 777477ffb9dSDavid C Somayajulu **/ 778477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 779477ffb9dSDavid C Somayajulu { 780477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 781477ffb9dSDavid C Somayajulu unsigned long flags = 0; 782477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 783477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 784477ffb9dSDavid C Somayajulu 785477ffb9dSDavid C Somayajulu qla4xxx_hw_reset(ha); 786afaf5a2dSDavid Somayajulu 787afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 788afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 789afaf5a2dSDavid Somayajulu do { 790afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 791afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 792afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 793afaf5a2dSDavid Somayajulu 794afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 795afaf5a2dSDavid Somayajulu break; 796afaf5a2dSDavid Somayajulu 797afaf5a2dSDavid Somayajulu msleep(1000); 798afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 799afaf5a2dSDavid Somayajulu 800afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 801afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 802afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 803afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 804afaf5a2dSDavid Somayajulu ha->host_no)); 805afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 806afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 807afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 808afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 809afaf5a2dSDavid Somayajulu } 810afaf5a2dSDavid Somayajulu 811afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 812afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 813afaf5a2dSDavid Somayajulu do { 814afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 815afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 816afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 817afaf5a2dSDavid Somayajulu 818afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 819afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 820afaf5a2dSDavid Somayajulu break; 821afaf5a2dSDavid Somayajulu } 822afaf5a2dSDavid Somayajulu 823afaf5a2dSDavid Somayajulu msleep(1000); 824afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 825afaf5a2dSDavid Somayajulu 826afaf5a2dSDavid Somayajulu /* 827afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 828afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 829afaf5a2dSDavid Somayajulu */ 830afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 831afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 832afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 833afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 834afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 835afaf5a2dSDavid Somayajulu } 836afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 837afaf5a2dSDavid Somayajulu 838afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 839afaf5a2dSDavid Somayajulu * function is also enabled. 840afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 841afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 842afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 843afaf5a2dSDavid Somayajulu */ 844afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 845afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 846afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 847afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 848afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 849afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 850afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 851afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 852afaf5a2dSDavid Somayajulu do { 853afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 854afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 855afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 856afaf5a2dSDavid Somayajulu 857afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 858afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 859afaf5a2dSDavid Somayajulu break; 860afaf5a2dSDavid Somayajulu } 861afaf5a2dSDavid Somayajulu 862afaf5a2dSDavid Somayajulu msleep(1000); 863afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 864afaf5a2dSDavid Somayajulu } 865afaf5a2dSDavid Somayajulu 866afaf5a2dSDavid Somayajulu return status; 867afaf5a2dSDavid Somayajulu } 868afaf5a2dSDavid Somayajulu 869afaf5a2dSDavid Somayajulu /** 870afaf5a2dSDavid Somayajulu * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. 871afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 872afaf5a2dSDavid Somayajulu * 873afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 874afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 875afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 876afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 877afaf5a2dSDavid Somayajulu **/ 878afaf5a2dSDavid Somayajulu static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) 879afaf5a2dSDavid Somayajulu { 880afaf5a2dSDavid Somayajulu struct srb *srb; 881afaf5a2dSDavid Somayajulu int i; 882afaf5a2dSDavid Somayajulu unsigned long flags; 883afaf5a2dSDavid Somayajulu 884afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 885afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 886afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 887afaf5a2dSDavid Somayajulu if (srb != NULL) { 888afaf5a2dSDavid Somayajulu srb->cmd->result = DID_RESET << 16; 889afaf5a2dSDavid Somayajulu qla4xxx_srb_compl(ha, srb); 890afaf5a2dSDavid Somayajulu } 891afaf5a2dSDavid Somayajulu } 892afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 893afaf5a2dSDavid Somayajulu 894afaf5a2dSDavid Somayajulu } 895afaf5a2dSDavid Somayajulu 896afaf5a2dSDavid Somayajulu /** 897afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 898afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 899afaf5a2dSDavid Somayajulu * @renew_ddb_list: Indicates what to do with the adapter's ddb list 90050a29aecSMike Christie * 90150a29aecSMike Christie * renew_ddb_list value can be 0=preserve ddb list, 1=destroy and rebuild 90250a29aecSMike Christie * ddb list. 903afaf5a2dSDavid Somayajulu **/ 904afaf5a2dSDavid Somayajulu static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, 905afaf5a2dSDavid Somayajulu uint8_t renew_ddb_list) 906afaf5a2dSDavid Somayajulu { 907afaf5a2dSDavid Somayajulu int status; 908afaf5a2dSDavid Somayajulu 909afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 910afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 91150a29aecSMike Christie 912afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, 913afaf5a2dSDavid Somayajulu __func__)); 914afaf5a2dSDavid Somayajulu 915afaf5a2dSDavid Somayajulu /* Wait for outstanding commands to complete. 916afaf5a2dSDavid Somayajulu * Stalls the driver for max 30 secs 917afaf5a2dSDavid Somayajulu */ 918afaf5a2dSDavid Somayajulu status = qla4xxx_cmd_wait(ha); 919afaf5a2dSDavid Somayajulu 920afaf5a2dSDavid Somayajulu qla4xxx_disable_intrs(ha); 921afaf5a2dSDavid Somayajulu 922afaf5a2dSDavid Somayajulu /* Flush any pending ddb changed AENs */ 923afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 924afaf5a2dSDavid Somayajulu 925dca05c4cSKaren Higgins qla4xxx_flush_active_srbs(ha); 926dca05c4cSKaren Higgins 927afaf5a2dSDavid Somayajulu /* Reset the firmware. If successful, function 928afaf5a2dSDavid Somayajulu * returns with ISP interrupts enabled. 929afaf5a2dSDavid Somayajulu */ 930afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", 931afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 932f26b9044SDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) 933afaf5a2dSDavid Somayajulu status = qla4xxx_soft_reset(ha); 934f26b9044SDavid C Somayajulu else 935f26b9044SDavid C Somayajulu status = QLA_ERROR; 936afaf5a2dSDavid Somayajulu 937afaf5a2dSDavid Somayajulu /* Flush any pending ddb changed AENs */ 938afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 939afaf5a2dSDavid Somayajulu 940afaf5a2dSDavid Somayajulu /* Re-initialize firmware. If successful, function returns 941afaf5a2dSDavid Somayajulu * with ISP interrupts enabled */ 942afaf5a2dSDavid Somayajulu if (status == QLA_SUCCESS) { 943afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", 944afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 945afaf5a2dSDavid Somayajulu 946afaf5a2dSDavid Somayajulu /* If successful, AF_ONLINE flag set in 947afaf5a2dSDavid Somayajulu * qla4xxx_initialize_adapter */ 948afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, renew_ddb_list); 949afaf5a2dSDavid Somayajulu } 950afaf5a2dSDavid Somayajulu 951afaf5a2dSDavid Somayajulu /* Failed adapter initialization? 952afaf5a2dSDavid Somayajulu * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ 953afaf5a2dSDavid Somayajulu if ((test_bit(AF_ONLINE, &ha->flags) == 0) && 954afaf5a2dSDavid Somayajulu (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { 955afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 956afaf5a2dSDavid Somayajulu * resetting the ha */ 957afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 958afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 959afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 960afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 961afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 962afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 963afaf5a2dSDavid Somayajulu status = QLA_ERROR; 964afaf5a2dSDavid Somayajulu } else { 965afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 966afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 967afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 968afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 969afaf5a2dSDavid Somayajulu "retry remaining %d\n", 970afaf5a2dSDavid Somayajulu ha->host_no, 971afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 972afaf5a2dSDavid Somayajulu status = QLA_ERROR; 973afaf5a2dSDavid Somayajulu } 974afaf5a2dSDavid Somayajulu 975afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 976afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 977afaf5a2dSDavid Somayajulu * Adapter DEAD */ 978afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 979afaf5a2dSDavid Somayajulu "failed - board disabled\n", 980afaf5a2dSDavid Somayajulu ha->host_no)); 981afaf5a2dSDavid Somayajulu qla4xxx_flush_active_srbs(ha); 982afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 983afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 984afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, 985afaf5a2dSDavid Somayajulu &ha->dpc_flags); 986afaf5a2dSDavid Somayajulu status = QLA_ERROR; 987afaf5a2dSDavid Somayajulu } 988afaf5a2dSDavid Somayajulu } 989afaf5a2dSDavid Somayajulu } else { 990afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 991afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); 992afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 993afaf5a2dSDavid Somayajulu } 994afaf5a2dSDavid Somayajulu 995afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 996afaf5a2dSDavid Somayajulu 997afaf5a2dSDavid Somayajulu if (status == QLA_SUCCESS) 998afaf5a2dSDavid Somayajulu qla4xxx_enable_intrs(ha); 999afaf5a2dSDavid Somayajulu 1000afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); 1001afaf5a2dSDavid Somayajulu return status; 1002afaf5a2dSDavid Somayajulu } 1003afaf5a2dSDavid Somayajulu 1004afaf5a2dSDavid Somayajulu /** 1005afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1006afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1007afaf5a2dSDavid Somayajulu * 1008afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1009afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1010afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1011afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1012afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1013afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1014afaf5a2dSDavid Somayajulu **/ 1015c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1016afaf5a2dSDavid Somayajulu { 1017c4028958SDavid Howells struct scsi_qla_host *ha = 1018c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1019afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1020477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1021afaf5a2dSDavid Somayajulu 1022f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1023477ffb9dSDavid C Somayajulu "flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n", 1024477ffb9dSDavid C Somayajulu ha->host_no, __func__, ha->flags, ha->dpc_flags, 1025477ffb9dSDavid C Somayajulu readw(&ha->reg->ctrl_status))); 1026afaf5a2dSDavid Somayajulu 1027afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1028afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 1029afaf5a2dSDavid Somayajulu return; 1030afaf5a2dSDavid Somayajulu 1031afaf5a2dSDavid Somayajulu if (adapter_up(ha) || 1032afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1033afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1034afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { 1035f26b9044SDavid C Somayajulu if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || 1036f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1037afaf5a2dSDavid Somayajulu qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); 1038afaf5a2dSDavid Somayajulu 1039477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1040afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1041afaf5a2dSDavid Somayajulu 1042afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1043afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1044afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1045afaf5a2dSDavid Somayajulu break; 1046afaf5a2dSDavid Somayajulu msleep(1000); 1047afaf5a2dSDavid Somayajulu } 1048afaf5a2dSDavid Somayajulu if (wait_time == 0) 1049afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1050afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1051afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1052477ffb9dSDavid C Somayajulu qla4xxx_flush_active_srbs(ha); 1053477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1054477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1055477ffb9dSDavid C Somayajulu status = qla4xxx_initialize_adapter(ha, 1056477ffb9dSDavid C Somayajulu PRESERVE_DDB_LIST); 1057477ffb9dSDavid C Somayajulu } 1058477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1059477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1060477ffb9dSDavid C Somayajulu qla4xxx_enable_intrs(ha); 1061afaf5a2dSDavid Somayajulu } 1062afaf5a2dSDavid Somayajulu } 1063afaf5a2dSDavid Somayajulu 1064afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1065afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1066afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1067afaf5a2dSDavid Somayajulu 1068afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1069afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1070afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1071afaf5a2dSDavid Somayajulu 1072afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1073afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1074afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1075afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1076afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1077afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1078afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1079afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1080afaf5a2dSDavid Somayajulu 1081afaf5a2dSDavid Somayajulu /* 1082afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1083afaf5a2dSDavid Somayajulu * in continuing further. 1084afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1085afaf5a2dSDavid Somayajulu * the system. 1086afaf5a2dSDavid Somayajulu */ 1087afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1088afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1089afaf5a2dSDavid Somayajulu "need to reset hba\n", 1090afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1091afaf5a2dSDavid Somayajulu break; 1092afaf5a2dSDavid Somayajulu } 1093afaf5a2dSDavid Somayajulu } 1094afaf5a2dSDavid Somayajulu } 1095afaf5a2dSDavid Somayajulu } 1096afaf5a2dSDavid Somayajulu 1097afaf5a2dSDavid Somayajulu /** 1098afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1099afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1100afaf5a2dSDavid Somayajulu **/ 1101afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1102afaf5a2dSDavid Somayajulu { 1103afaf5a2dSDavid Somayajulu 1104afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1105afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1106afaf5a2dSDavid Somayajulu qla4xxx_disable_intrs(ha); 1107afaf5a2dSDavid Somayajulu } 1108afaf5a2dSDavid Somayajulu 1109afaf5a2dSDavid Somayajulu /* Kill the kernel thread for this host */ 1110afaf5a2dSDavid Somayajulu if (ha->dpc_thread) 1111afaf5a2dSDavid Somayajulu destroy_workqueue(ha->dpc_thread); 1112afaf5a2dSDavid Somayajulu 1113afaf5a2dSDavid Somayajulu /* Issue Soft Reset to put firmware in unknown state */ 1114f26b9044SDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) 1115477ffb9dSDavid C Somayajulu qla4xxx_hw_reset(ha); 1116afaf5a2dSDavid Somayajulu 1117afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1118afaf5a2dSDavid Somayajulu if (ha->timer_active) 1119afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1120afaf5a2dSDavid Somayajulu 1121afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1122afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1123afaf5a2dSDavid Somayajulu free_irq(ha->pdev->irq, ha); 1124afaf5a2dSDavid Somayajulu 1125bee4fe8eSDavid C Somayajulu /* free extra memory */ 1126bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1127bee4fe8eSDavid C Somayajulu 1128afaf5a2dSDavid Somayajulu pci_disable_device(ha->pdev); 1129afaf5a2dSDavid Somayajulu 1130afaf5a2dSDavid Somayajulu } 1131afaf5a2dSDavid Somayajulu 1132afaf5a2dSDavid Somayajulu /*** 1133afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1134afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1135afaf5a2dSDavid Somayajulu * 1136afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1137afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1138afaf5a2dSDavid Somayajulu **/ 1139afaf5a2dSDavid Somayajulu static int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1140afaf5a2dSDavid Somayajulu { 1141afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1142afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1143afaf5a2dSDavid Somayajulu 1144afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1145afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1146afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1147afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1148afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1149afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1150afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1151afaf5a2dSDavid Somayajulu pio = 0; 1152afaf5a2dSDavid Somayajulu } 1153afaf5a2dSDavid Somayajulu } else { 1154afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); 1155afaf5a2dSDavid Somayajulu pio = 0; 1156afaf5a2dSDavid Somayajulu } 1157afaf5a2dSDavid Somayajulu 1158afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1159afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1160afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1161afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1162afaf5a2dSDavid Somayajulu 1163afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1164afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1165afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1166afaf5a2dSDavid Somayajulu 1167afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1168afaf5a2dSDavid Somayajulu } 1169afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1170afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1171afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1172afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1173afaf5a2dSDavid Somayajulu } 1174afaf5a2dSDavid Somayajulu 1175afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1176afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1177afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1178afaf5a2dSDavid Somayajulu 1179afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1180afaf5a2dSDavid Somayajulu } 1181afaf5a2dSDavid Somayajulu 1182afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1183afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1184afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1185afaf5a2dSDavid Somayajulu if (!ha->reg) { 1186afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1187afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1188afaf5a2dSDavid Somayajulu 1189afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1190afaf5a2dSDavid Somayajulu } 1191afaf5a2dSDavid Somayajulu 1192afaf5a2dSDavid Somayajulu return 0; 1193afaf5a2dSDavid Somayajulu 1194afaf5a2dSDavid Somayajulu iospace_error_exit: 1195afaf5a2dSDavid Somayajulu return -ENOMEM; 1196afaf5a2dSDavid Somayajulu } 1197afaf5a2dSDavid Somayajulu 1198afaf5a2dSDavid Somayajulu /** 1199afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1200afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1201afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1202afaf5a2dSDavid Somayajulu * 1203afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1204afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1205afaf5a2dSDavid Somayajulu * the driver. 1206afaf5a2dSDavid Somayajulu **/ 1207afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1208afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1209afaf5a2dSDavid Somayajulu { 1210afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1211afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1212afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1213afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1214afaf5a2dSDavid Somayajulu char buf[34]; 1215afaf5a2dSDavid Somayajulu 1216afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1217afaf5a2dSDavid Somayajulu return -1; 1218afaf5a2dSDavid Somayajulu 1219afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1220afaf5a2dSDavid Somayajulu if (host == NULL) { 1221afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1222afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1223afaf5a2dSDavid Somayajulu goto probe_disable_device; 1224afaf5a2dSDavid Somayajulu } 1225afaf5a2dSDavid Somayajulu 1226afaf5a2dSDavid Somayajulu /* Clear our data area */ 1227afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1228afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1229afaf5a2dSDavid Somayajulu 1230afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1231afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1232afaf5a2dSDavid Somayajulu ha->host = host; 1233afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1234afaf5a2dSDavid Somayajulu 1235afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1236afaf5a2dSDavid Somayajulu ret = qla4xxx_iospace_config(ha); 1237afaf5a2dSDavid Somayajulu if (ret) 1238afaf5a2dSDavid Somayajulu goto probe_failed; 1239afaf5a2dSDavid Somayajulu 1240afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1241afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1242afaf5a2dSDavid Somayajulu 1243afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1244afaf5a2dSDavid Somayajulu 1245afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1246afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1247afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1248afaf5a2dSDavid Somayajulu 1249afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1250afaf5a2dSDavid Somayajulu 1251afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1252afaf5a2dSDavid Somayajulu 1253afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1254afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1255afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1256afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1257afaf5a2dSDavid Somayajulu 1258afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1259afaf5a2dSDavid Somayajulu goto probe_failed; 1260afaf5a2dSDavid Somayajulu } 1261afaf5a2dSDavid Somayajulu 1262afaf5a2dSDavid Somayajulu /* 1263afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1264afaf5a2dSDavid Somayajulu * firmware 1265afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1266afaf5a2dSDavid Somayajulu */ 1267afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1268afaf5a2dSDavid Somayajulu while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { 1269afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1270afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1271afaf5a2dSDavid Somayajulu qla4xxx_soft_reset(ha); 1272afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1273afaf5a2dSDavid Somayajulu } 1274afaf5a2dSDavid Somayajulu if (status == QLA_ERROR) { 1275afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); 1276afaf5a2dSDavid Somayajulu 1277afaf5a2dSDavid Somayajulu ret = -ENODEV; 1278afaf5a2dSDavid Somayajulu goto probe_failed; 1279afaf5a2dSDavid Somayajulu } 1280afaf5a2dSDavid Somayajulu 1281afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1282afaf5a2dSDavid Somayajulu host->max_channel = 0; 1283afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1284afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1285afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1286afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1287afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1288afaf5a2dSDavid Somayajulu 1289afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1290afaf5a2dSDavid Somayajulu if (ret) { 1291898eb71cSJoe Perches dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed\n"); 1292afaf5a2dSDavid Somayajulu goto probe_failed; 1293afaf5a2dSDavid Somayajulu } 1294afaf5a2dSDavid Somayajulu 1295afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1296afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1297afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1298afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1299afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1300afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1301afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); 1302afaf5a2dSDavid Somayajulu ret = -ENODEV; 1303afaf5a2dSDavid Somayajulu goto probe_failed; 1304afaf5a2dSDavid Somayajulu } 1305c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 1306afaf5a2dSDavid Somayajulu 1307afaf5a2dSDavid Somayajulu ret = request_irq(pdev->irq, qla4xxx_intr_handler, 130838515e90SThomas Gleixner IRQF_DISABLED | IRQF_SHARED, "qla4xxx", ha); 1309afaf5a2dSDavid Somayajulu if (ret) { 1310afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" 1311afaf5a2dSDavid Somayajulu " already in use.\n", pdev->irq); 1312afaf5a2dSDavid Somayajulu goto probe_failed; 1313afaf5a2dSDavid Somayajulu } 1314afaf5a2dSDavid Somayajulu set_bit(AF_IRQ_ATTACHED, &ha->flags); 1315afaf5a2dSDavid Somayajulu host->irq = pdev->irq; 1316afaf5a2dSDavid Somayajulu DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); 1317afaf5a2dSDavid Somayajulu 1318afaf5a2dSDavid Somayajulu qla4xxx_enable_intrs(ha); 1319afaf5a2dSDavid Somayajulu 1320afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1321afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1322afaf5a2dSDavid Somayajulu 1323afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1324afaf5a2dSDavid Somayajulu 1325afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1326afaf5a2dSDavid Somayajulu 1327afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1328afaf5a2dSDavid Somayajulu if (ret) 1329afaf5a2dSDavid Somayajulu goto probe_failed; 1330afaf5a2dSDavid Somayajulu 1331afaf5a2dSDavid Somayajulu printk(KERN_INFO 1332afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1333afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1334afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1335afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1336afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1337921601b7SMike Christie scsi_scan_host(host); 1338afaf5a2dSDavid Somayajulu return 0; 1339afaf5a2dSDavid Somayajulu 1340afaf5a2dSDavid Somayajulu probe_failed: 1341afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1342afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1343afaf5a2dSDavid Somayajulu 1344afaf5a2dSDavid Somayajulu probe_disable_device: 1345afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1346afaf5a2dSDavid Somayajulu 1347afaf5a2dSDavid Somayajulu return ret; 1348afaf5a2dSDavid Somayajulu } 1349afaf5a2dSDavid Somayajulu 1350afaf5a2dSDavid Somayajulu /** 1351afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1352afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1353afaf5a2dSDavid Somayajulu **/ 1354afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1355afaf5a2dSDavid Somayajulu { 1356afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1357afaf5a2dSDavid Somayajulu 1358afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1359afaf5a2dSDavid Somayajulu 1360bee4fe8eSDavid C Somayajulu qla4xxx_disable_intrs(ha); 1361bee4fe8eSDavid C Somayajulu 1362bee4fe8eSDavid C Somayajulu while (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) 1363bee4fe8eSDavid C Somayajulu ssleep(1); 1364bee4fe8eSDavid C Somayajulu 1365afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1366afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1367afaf5a2dSDavid Somayajulu 1368afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1369afaf5a2dSDavid Somayajulu 1370afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1371afaf5a2dSDavid Somayajulu 1372afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1373afaf5a2dSDavid Somayajulu 1374afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1375afaf5a2dSDavid Somayajulu } 1376afaf5a2dSDavid Somayajulu 1377afaf5a2dSDavid Somayajulu /** 1378afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1379afaf5a2dSDavid Somayajulu * @ha: HA context 1380afaf5a2dSDavid Somayajulu * 1381afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1382afaf5a2dSDavid Somayajulu * supported addressing method. 1383afaf5a2dSDavid Somayajulu */ 138447975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1385afaf5a2dSDavid Somayajulu { 1386afaf5a2dSDavid Somayajulu int retval; 1387afaf5a2dSDavid Somayajulu 1388afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 13896a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 13906a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 1391afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1392afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1393afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1394afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1395284901a9SYang Hongyang DMA_BIT_MASK(32)); 1396afaf5a2dSDavid Somayajulu } 1397afaf5a2dSDavid Somayajulu } else 1398284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 1399afaf5a2dSDavid Somayajulu } 1400afaf5a2dSDavid Somayajulu 1401afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1402afaf5a2dSDavid Somayajulu { 1403afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1404afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 1405afaf5a2dSDavid Somayajulu 1406afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1407afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1408d510d965SMike Christie scsi_activate_tcq(sdev, QL4_DEF_QDEPTH); 1409afaf5a2dSDavid Somayajulu return 0; 1410afaf5a2dSDavid Somayajulu } 1411afaf5a2dSDavid Somayajulu 1412afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1413afaf5a2dSDavid Somayajulu { 1414afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1415afaf5a2dSDavid Somayajulu return 0; 1416afaf5a2dSDavid Somayajulu } 1417afaf5a2dSDavid Somayajulu 1418afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1419afaf5a2dSDavid Somayajulu { 1420afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1421afaf5a2dSDavid Somayajulu } 1422afaf5a2dSDavid Somayajulu 1423afaf5a2dSDavid Somayajulu /** 1424afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1425afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1426fd589a8fSAnand Gadiyar * @index: index into the active_array 1427afaf5a2dSDavid Somayajulu * 1428afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1429afaf5a2dSDavid Somayajulu **/ 1430afaf5a2dSDavid Somayajulu struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) 1431afaf5a2dSDavid Somayajulu { 1432afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 1433afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1434afaf5a2dSDavid Somayajulu 1435afaf5a2dSDavid Somayajulu if (!(cmd = scsi_host_find_tag(ha->host, index))) 1436afaf5a2dSDavid Somayajulu return srb; 1437afaf5a2dSDavid Somayajulu 1438afaf5a2dSDavid Somayajulu if (!(srb = (struct srb *)cmd->host_scribble)) 1439afaf5a2dSDavid Somayajulu return srb; 1440afaf5a2dSDavid Somayajulu 1441afaf5a2dSDavid Somayajulu /* update counters */ 1442afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1443afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1444afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1445afaf5a2dSDavid Somayajulu if (srb->cmd) 1446afaf5a2dSDavid Somayajulu srb->cmd->host_scribble = NULL; 1447afaf5a2dSDavid Somayajulu } 1448afaf5a2dSDavid Somayajulu return srb; 1449afaf5a2dSDavid Somayajulu } 1450afaf5a2dSDavid Somayajulu 1451afaf5a2dSDavid Somayajulu /** 1452afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 1453afaf5a2dSDavid Somayajulu * @ha: actual ha whose done queue will contain the comd returned by firmware. 1454afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1455afaf5a2dSDavid Somayajulu * 1456afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1457afaf5a2dSDavid Somayajulu * for some max time. 1458afaf5a2dSDavid Somayajulu **/ 1459afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1460afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1461afaf5a2dSDavid Somayajulu { 1462afaf5a2dSDavid Somayajulu int done = 0; 1463afaf5a2dSDavid Somayajulu struct srb *rp; 1464afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 1465afaf5a2dSDavid Somayajulu 1466afaf5a2dSDavid Somayajulu do { 1467afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 1468afaf5a2dSDavid Somayajulu rp = (struct srb *) cmd->SCp.ptr; 1469afaf5a2dSDavid Somayajulu if (rp == NULL) { 1470afaf5a2dSDavid Somayajulu done++; 1471afaf5a2dSDavid Somayajulu break; 1472afaf5a2dSDavid Somayajulu } 1473afaf5a2dSDavid Somayajulu 1474afaf5a2dSDavid Somayajulu msleep(2000); 1475afaf5a2dSDavid Somayajulu } while (max_wait_time--); 1476afaf5a2dSDavid Somayajulu 1477afaf5a2dSDavid Somayajulu return done; 1478afaf5a2dSDavid Somayajulu } 1479afaf5a2dSDavid Somayajulu 1480afaf5a2dSDavid Somayajulu /** 1481afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 1482afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 1483afaf5a2dSDavid Somayajulu **/ 1484afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 1485afaf5a2dSDavid Somayajulu { 1486afaf5a2dSDavid Somayajulu unsigned long wait_online; 1487afaf5a2dSDavid Somayajulu 1488afaf5a2dSDavid Somayajulu wait_online = jiffies + (30 * HZ); 1489afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 1490afaf5a2dSDavid Somayajulu 1491afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 1492afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 1493afaf5a2dSDavid Somayajulu else if (ha->retry_reset_ha_cnt == 0) 1494afaf5a2dSDavid Somayajulu return QLA_ERROR; 1495afaf5a2dSDavid Somayajulu 1496afaf5a2dSDavid Somayajulu msleep(2000); 1497afaf5a2dSDavid Somayajulu } 1498afaf5a2dSDavid Somayajulu 1499afaf5a2dSDavid Somayajulu return QLA_ERROR; 1500afaf5a2dSDavid Somayajulu } 1501afaf5a2dSDavid Somayajulu 1502afaf5a2dSDavid Somayajulu /** 1503ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 1504fd589a8fSAnand Gadiyar * @ha: pointer to HBA 1505afaf5a2dSDavid Somayajulu * @t: target id 1506afaf5a2dSDavid Somayajulu * @l: lun id 1507afaf5a2dSDavid Somayajulu * 1508afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 1509afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 1510afaf5a2dSDavid Somayajulu **/ 1511ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 1512ce545039SMike Christie struct scsi_target *stgt, 1513ce545039SMike Christie struct scsi_device *sdev) 1514afaf5a2dSDavid Somayajulu { 1515afaf5a2dSDavid Somayajulu int cnt; 1516afaf5a2dSDavid Somayajulu int status = 0; 1517afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1518afaf5a2dSDavid Somayajulu 1519afaf5a2dSDavid Somayajulu /* 1520ce545039SMike Christie * Waiting for all commands for the designated target or dev 1521ce545039SMike Christie * in the active array 1522afaf5a2dSDavid Somayajulu */ 1523afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 1524afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 1525ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 1526ce545039SMike Christie (!sdev || sdev == cmd->device)) { 1527afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 1528afaf5a2dSDavid Somayajulu status++; 1529afaf5a2dSDavid Somayajulu break; 1530afaf5a2dSDavid Somayajulu } 1531afaf5a2dSDavid Somayajulu } 1532afaf5a2dSDavid Somayajulu } 1533afaf5a2dSDavid Somayajulu return status; 1534afaf5a2dSDavid Somayajulu } 1535afaf5a2dSDavid Somayajulu 1536afaf5a2dSDavid Somayajulu /** 1537afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 1538afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 1539afaf5a2dSDavid Somayajulu * 1540afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 1541afaf5a2dSDavid Somayajulu * specified target. 1542afaf5a2dSDavid Somayajulu **/ 1543afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 1544afaf5a2dSDavid Somayajulu { 1545afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 1546afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 1547afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 1548afaf5a2dSDavid Somayajulu 1549612f7348SKaren Higgins if (!ddb_entry) 1550afaf5a2dSDavid Somayajulu return ret; 1551afaf5a2dSDavid Somayajulu 1552afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1553afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 1554afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 1555afaf5a2dSDavid Somayajulu 1556afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 1557afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 1558afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 1559242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 1560afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 1561afaf5a2dSDavid Somayajulu 1562afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 1563afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 1564afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 1565afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); 1566afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 1567afaf5a2dSDavid Somayajulu } 1568afaf5a2dSDavid Somayajulu 1569ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 1570ce545039SMike Christie cmd->device)) { 1571afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1572afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 1573afaf5a2dSDavid Somayajulu "commands.\n"); 1574afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 1575afaf5a2dSDavid Somayajulu } 1576afaf5a2dSDavid Somayajulu 15779d562913SDavid C Somayajulu /* Send marker. */ 15789d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 15799d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 15809d562913SDavid C Somayajulu goto eh_dev_reset_done; 15819d562913SDavid C Somayajulu 1582afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1583afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 1584afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 1585afaf5a2dSDavid Somayajulu cmd->device->lun); 1586afaf5a2dSDavid Somayajulu 1587afaf5a2dSDavid Somayajulu ret = SUCCESS; 1588afaf5a2dSDavid Somayajulu 1589afaf5a2dSDavid Somayajulu eh_dev_reset_done: 1590afaf5a2dSDavid Somayajulu 1591afaf5a2dSDavid Somayajulu return ret; 1592afaf5a2dSDavid Somayajulu } 1593afaf5a2dSDavid Somayajulu 1594afaf5a2dSDavid Somayajulu /** 1595ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 1596ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 1597ce545039SMike Christie * 1598ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 1599ce545039SMike Christie **/ 1600ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 1601ce545039SMike Christie { 1602ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 1603ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 1604ce545039SMike Christie int stat; 1605ce545039SMike Christie 1606ce545039SMike Christie if (!ddb_entry) 1607ce545039SMike Christie return FAILED; 1608ce545039SMike Christie 1609ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 1610ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 1611ce545039SMike Christie 1612ce545039SMike Christie DEBUG2(printk(KERN_INFO 1613ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 1614ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 1615242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 1616ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 1617ce545039SMike Christie 1618ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 1619ce545039SMike Christie if (stat != QLA_SUCCESS) { 1620ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 1621ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 1622ce545039SMike Christie return FAILED; 1623ce545039SMike Christie } 1624ce545039SMike Christie 1625ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 1626ce545039SMike Christie NULL)) { 1627ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 1628ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 1629ce545039SMike Christie "waiting for commands.\n"); 1630ce545039SMike Christie return FAILED; 1631ce545039SMike Christie } 1632ce545039SMike Christie 16339d562913SDavid C Somayajulu /* Send marker. */ 16349d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 16359d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 16369d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 16379d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 16389d562913SDavid C Somayajulu "marker iocb failed.\n"); 16399d562913SDavid C Somayajulu return FAILED; 16409d562913SDavid C Somayajulu } 16419d562913SDavid C Somayajulu 1642ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 1643ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 1644ce545039SMike Christie return SUCCESS; 1645ce545039SMike Christie } 1646ce545039SMike Christie 1647ce545039SMike Christie /** 1648afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 1649afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 1650afaf5a2dSDavid Somayajulu * 1651afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 1652afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 1653afaf5a2dSDavid Somayajulu **/ 1654afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 1655afaf5a2dSDavid Somayajulu { 1656afaf5a2dSDavid Somayajulu int return_status = FAILED; 1657afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1658afaf5a2dSDavid Somayajulu 1659afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 1660afaf5a2dSDavid Somayajulu 1661afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1662dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 1663afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 1664afaf5a2dSDavid Somayajulu 1665afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 1666afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 1667afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 1668afaf5a2dSDavid Somayajulu __func__)); 1669afaf5a2dSDavid Somayajulu 1670afaf5a2dSDavid Somayajulu return FAILED; 1671afaf5a2dSDavid Somayajulu } 1672afaf5a2dSDavid Somayajulu 167350a29aecSMike Christie /* make sure the dpc thread is stopped while we reset the hba */ 167450a29aecSMike Christie clear_bit(AF_ONLINE, &ha->flags); 167550a29aecSMike Christie flush_workqueue(ha->dpc_thread); 167650a29aecSMike Christie 167750a29aecSMike Christie if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) 1678afaf5a2dSDavid Somayajulu return_status = SUCCESS; 1679afaf5a2dSDavid Somayajulu 1680afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "HOST RESET %s.\n", 1681afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 1682afaf5a2dSDavid Somayajulu 1683afaf5a2dSDavid Somayajulu return return_status; 1684afaf5a2dSDavid Somayajulu } 1685afaf5a2dSDavid Somayajulu 1686afaf5a2dSDavid Somayajulu 1687afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 1688afaf5a2dSDavid Somayajulu { 1689afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 1690afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 1691afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 1692afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 1693afaf5a2dSDavid Somayajulu }, 1694afaf5a2dSDavid Somayajulu { 1695afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 1696afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 1697afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 1698afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 1699afaf5a2dSDavid Somayajulu }, 1700d915058fSDavid C Somayajulu { 1701d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 1702d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 1703d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 1704d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 1705d915058fSDavid C Somayajulu }, 1706afaf5a2dSDavid Somayajulu {0, 0}, 1707afaf5a2dSDavid Somayajulu }; 1708afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 1709afaf5a2dSDavid Somayajulu 171047975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 1711afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 1712afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 1713afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 1714afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 1715afaf5a2dSDavid Somayajulu }; 1716afaf5a2dSDavid Somayajulu 1717afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 1718afaf5a2dSDavid Somayajulu { 1719afaf5a2dSDavid Somayajulu int ret; 1720afaf5a2dSDavid Somayajulu 1721afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 1722afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 172320c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 1724afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 1725afaf5a2dSDavid Somayajulu printk(KERN_ERR 1726afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 1727afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 1728afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1729afaf5a2dSDavid Somayajulu goto no_srp_cache; 1730afaf5a2dSDavid Somayajulu } 1731afaf5a2dSDavid Somayajulu 1732afaf5a2dSDavid Somayajulu /* Derive version string. */ 1733afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 173411010fecSAndrew Vasquez if (ql4xextended_error_logging) 1735afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 1736afaf5a2dSDavid Somayajulu 1737afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 1738afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 1739afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 1740afaf5a2dSDavid Somayajulu ret = -ENODEV; 1741afaf5a2dSDavid Somayajulu goto release_srb_cache; 1742afaf5a2dSDavid Somayajulu } 1743afaf5a2dSDavid Somayajulu 1744afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 1745afaf5a2dSDavid Somayajulu if (ret) 1746afaf5a2dSDavid Somayajulu goto unregister_transport; 1747afaf5a2dSDavid Somayajulu 1748afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 1749afaf5a2dSDavid Somayajulu return 0; 17505ae16db3SDoug Maxey 1751afaf5a2dSDavid Somayajulu unregister_transport: 1752afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 1753afaf5a2dSDavid Somayajulu release_srb_cache: 1754afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 1755afaf5a2dSDavid Somayajulu no_srp_cache: 1756afaf5a2dSDavid Somayajulu return ret; 1757afaf5a2dSDavid Somayajulu } 1758afaf5a2dSDavid Somayajulu 1759afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 1760afaf5a2dSDavid Somayajulu { 1761477ffb9dSDavid C Somayajulu ql4_mod_unload = 1; 1762afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 1763afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 1764afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 1765afaf5a2dSDavid Somayajulu } 1766afaf5a2dSDavid Somayajulu 1767afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 1768afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 1769afaf5a2dSDavid Somayajulu 1770afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 1771afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 1772afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 1773afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 1774