1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 37d01d069SVikas Chaudhary * Copyright (c) 2003-2010 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 85a0e3ad6STejun Heo #include <linux/slab.h> 9afaf5a2dSDavid Somayajulu 10afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 11afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 12afaf5a2dSDavid Somayajulu 13afaf5a2dSDavid Somayajulu #include "ql4_def.h" 14bee4fe8eSDavid C Somayajulu #include "ql4_version.h" 15bee4fe8eSDavid C Somayajulu #include "ql4_glbl.h" 16bee4fe8eSDavid C Somayajulu #include "ql4_dbg.h" 17bee4fe8eSDavid C Somayajulu #include "ql4_inline.h" 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * Driver version 21afaf5a2dSDavid Somayajulu */ 2247975477SAdrian Bunk static char qla4xxx_version_str[40]; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * SRB allocation cache 26afaf5a2dSDavid Somayajulu */ 27e18b890bSChristoph Lameter static struct kmem_cache *srb_cachep; 28afaf5a2dSDavid Somayajulu 29afaf5a2dSDavid Somayajulu /* 30afaf5a2dSDavid Somayajulu * Module parameter information and variables 31afaf5a2dSDavid Somayajulu */ 32afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 33f4f5df23SVikas Chaudhary module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); 34afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 35f4f5df23SVikas Chaudhary "Don't reset the HBA for driver recovery \n" 36f4f5df23SVikas Chaudhary " 0 - It will reset HBA (Default)\n" 37f4f5df23SVikas Chaudhary " 1 - It will NOT reset HBA"); 38afaf5a2dSDavid Somayajulu 3911010fecSAndrew Vasquez int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ 40f4f5df23SVikas Chaudhary module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); 4111010fecSAndrew Vasquez MODULE_PARM_DESC(ql4xextended_error_logging, 42afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 43afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 44afaf5a2dSDavid Somayajulu 45f4f5df23SVikas Chaudhary int ql4xenablemsix = 1; 46f4f5df23SVikas Chaudhary module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); 47f4f5df23SVikas Chaudhary MODULE_PARM_DESC(ql4xenablemsix, 48f4f5df23SVikas Chaudhary "Set to enable MSI or MSI-X interrupt mechanism.\n" 49f4f5df23SVikas Chaudhary " 0 = enable INTx interrupt mechanism.\n" 50f4f5df23SVikas Chaudhary " 1 = enable MSI-X interrupt mechanism (Default).\n" 51f4f5df23SVikas Chaudhary " 2 = enable MSI interrupt mechanism."); 52477ffb9dSDavid C Somayajulu 53d510d965SMike Christie #define QL4_DEF_QDEPTH 32 548bb4033dSVikas Chaudhary static int ql4xmaxqdepth = QL4_DEF_QDEPTH; 558bb4033dSVikas Chaudhary module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR); 568bb4033dSVikas Chaudhary MODULE_PARM_DESC(ql4xmaxqdepth, 578bb4033dSVikas Chaudhary "Maximum queue depth to report for target devices.\n" 588bb4033dSVikas Chaudhary " Default: 32."); 59d510d965SMike Christie 603038727cSVikas Chaudhary static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO; 613038727cSVikas Chaudhary module_param(ql4xsess_recovery_tmo, int, S_IRUGO); 623038727cSVikas Chaudhary MODULE_PARM_DESC(ql4xsess_recovery_tmo, 633038727cSVikas Chaudhary "Target Session Recovery Timeout.\n" 643038727cSVikas Chaudhary " Default: 30 sec."); 653038727cSVikas Chaudhary 66afaf5a2dSDavid Somayajulu /* 67afaf5a2dSDavid Somayajulu * SCSI host template entry points 68afaf5a2dSDavid Somayajulu */ 6947975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 70afaf5a2dSDavid Somayajulu 71afaf5a2dSDavid Somayajulu /* 72afaf5a2dSDavid Somayajulu * iSCSI template entry points 73afaf5a2dSDavid Somayajulu */ 742174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 752174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 762174a04eSMike Christie struct sockaddr *dst_addr); 77afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 78afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 79afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 80afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 81aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 82aa1e93a2SMike Christie enum iscsi_host_param param, char *buf); 83d00efe3fSMike Christie static int qla4xxx_iface_set_param(struct Scsi_Host *shost, char *data, 84d00efe3fSMike Christie int count); 85afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 865c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); 87afaf5a2dSDavid Somayajulu 88afaf5a2dSDavid Somayajulu /* 89afaf5a2dSDavid Somayajulu * SCSI host template entry points 90afaf5a2dSDavid Somayajulu */ 91f281233dSJeff Garzik static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); 9209a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); 93afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 94ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); 95afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 96afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 97afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 98afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 99024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost); 100afaf5a2dSDavid Somayajulu 101f4f5df23SVikas Chaudhary static struct qla4_8xxx_legacy_intr_set legacy_intr[] = 102f4f5df23SVikas Chaudhary QLA82XX_LEGACY_INTR_CONFIG; 103f4f5df23SVikas Chaudhary 104afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 105afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 106afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 107afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 108afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 109afaf5a2dSDavid Somayajulu 11009a0f719SVikas Chaudhary .eh_abort_handler = qla4xxx_eh_abort, 111afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 112ce545039SMike Christie .eh_target_reset_handler = qla4xxx_eh_target_reset, 113afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 1145c656af7SMike Christie .eh_timed_out = qla4xxx_eh_cmd_timed_out, 115afaf5a2dSDavid Somayajulu 116afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 117afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 118afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 119afaf5a2dSDavid Somayajulu 120921601b7SMike Christie .scan_finished = iscsi_scan_finished, 121024f801fSMike Christie .scan_start = qla4xxx_scan_start, 122921601b7SMike Christie 123afaf5a2dSDavid Somayajulu .this_id = -1, 124afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 125afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 126afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 127afaf5a2dSDavid Somayajulu 128afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 1297ad633c0SHarish Zunjarrao .shost_attrs = qla4xxx_host_attrs, 130afaf5a2dSDavid Somayajulu }; 131afaf5a2dSDavid Somayajulu 132afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 133afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 134afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 135d8196ed2SMike Christie .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | 136d8196ed2SMike Christie CAP_DATA_PATH_OFFLOAD, 137aa1e93a2SMike Christie .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | 1383b2bef1fSVikas Chaudhary ISCSI_TARGET_NAME | ISCSI_TPGT | 1393b2bef1fSVikas Chaudhary ISCSI_TARGET_ALIAS, 1408ad5781aSMike Christie .host_param_mask = ISCSI_HOST_HWADDRESS | 14122236961SMike Christie ISCSI_HOST_IPADDRESS | 1428ad5781aSMike Christie ISCSI_HOST_INITIATOR_NAME, 143afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 144afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 145afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 146aa1e93a2SMike Christie .get_host_param = qla4xxx_host_get_param, 147d00efe3fSMike Christie .set_iface_param = qla4xxx_iface_set_param, 148afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 149afaf5a2dSDavid Somayajulu }; 150afaf5a2dSDavid Somayajulu 151afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 152afaf5a2dSDavid Somayajulu 1535c656af7SMike Christie static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) 1545c656af7SMike Christie { 1555c656af7SMike Christie struct iscsi_cls_session *session; 1565c656af7SMike Christie struct ddb_entry *ddb_entry; 1575c656af7SMike Christie 1585c656af7SMike Christie session = starget_to_session(scsi_target(sc->device)); 1595c656af7SMike Christie ddb_entry = session->dd_data; 1605c656af7SMike Christie 1615c656af7SMike Christie /* if we are not logged in then the LLD is going to clean up the cmd */ 1625c656af7SMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1635c656af7SMike Christie return BLK_EH_RESET_TIMER; 1645c656af7SMike Christie else 1655c656af7SMike Christie return BLK_EH_NOT_HANDLED; 1665c656af7SMike Christie } 1675c656af7SMike Christie 168afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 169afaf5a2dSDavid Somayajulu { 170afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 171afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 172afaf5a2dSDavid Somayajulu 173568d303bSMike Christie if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 174afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 175afaf5a2dSDavid Somayajulu 1763013cea8SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " 177568d303bSMike Christie "of (%d) secs exhausted, marking device DEAD.\n", 178568d303bSMike Christie ha->host_no, __func__, ddb_entry->fw_ddb_index, 1793038727cSVikas Chaudhary ddb_entry->sess->recovery_tmo)); 180afaf5a2dSDavid Somayajulu } 181568d303bSMike Christie } 182afaf5a2dSDavid Somayajulu 183aa1e93a2SMike Christie static int qla4xxx_host_get_param(struct Scsi_Host *shost, 184aa1e93a2SMike Christie enum iscsi_host_param param, char *buf) 185aa1e93a2SMike Christie { 186aa1e93a2SMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 187aa1e93a2SMike Christie int len; 188aa1e93a2SMike Christie 189aa1e93a2SMike Christie switch (param) { 190aa1e93a2SMike Christie case ISCSI_HOST_PARAM_HWADDRESS: 1917ffc49a6SMichael Chan len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); 192aa1e93a2SMike Christie break; 19322236961SMike Christie case ISCSI_HOST_PARAM_IPADDRESS: 1942bab08fcSVikas Chaudhary len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address); 19522236961SMike Christie break; 1968ad5781aSMike Christie case ISCSI_HOST_PARAM_INITIATOR_NAME: 19722236961SMike Christie len = sprintf(buf, "%s\n", ha->name_string); 1988ad5781aSMike Christie break; 199aa1e93a2SMike Christie default: 200aa1e93a2SMike Christie return -ENOSYS; 201aa1e93a2SMike Christie } 202aa1e93a2SMike Christie 203aa1e93a2SMike Christie return len; 204aa1e93a2SMike Christie } 205aa1e93a2SMike Christie 206d00efe3fSMike Christie static void qla4xxx_set_ipv6(struct scsi_qla_host *ha, 207d00efe3fSMike Christie struct iscsi_iface_param_info *iface_param, 208d00efe3fSMike Christie struct addr_ctrl_blk *init_fw_cb) 209d00efe3fSMike Christie { 210d00efe3fSMike Christie /* 211d00efe3fSMike Christie * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg. 212d00efe3fSMike Christie * iface_num 1 is valid only for IPv6 Addr. 213d00efe3fSMike Christie */ 214d00efe3fSMike Christie switch (iface_param->param) { 215d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_ADDR: 216d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 217d00efe3fSMike Christie /* IPv6 Addr 1 */ 218d00efe3fSMike Christie memcpy(init_fw_cb->ipv6_addr1, iface_param->value, 219d00efe3fSMike Christie sizeof(init_fw_cb->ipv6_addr1)); 220d00efe3fSMike Christie else 221d00efe3fSMike Christie /* IPv6 Addr 0 */ 222d00efe3fSMike Christie memcpy(init_fw_cb->ipv6_addr0, iface_param->value, 223d00efe3fSMike Christie sizeof(init_fw_cb->ipv6_addr0)); 224d00efe3fSMike Christie break; 225d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_LINKLOCAL: 226d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 227d00efe3fSMike Christie break; 228d00efe3fSMike Christie memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8], 229d00efe3fSMike Christie sizeof(init_fw_cb->ipv6_if_id)); 230d00efe3fSMike Christie break; 231d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_ROUTER: 232d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 233d00efe3fSMike Christie break; 234d00efe3fSMike Christie memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value, 235d00efe3fSMike Christie sizeof(init_fw_cb->ipv6_dflt_rtr_addr)); 236d00efe3fSMike Christie break; 237d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG: 238d00efe3fSMike Christie /* Autocfg applies to even interface */ 239d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 240d00efe3fSMike Christie break; 241d00efe3fSMike Christie 242d00efe3fSMike Christie if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE) 243d00efe3fSMike Christie init_fw_cb->ipv6_addtl_opts &= 244d00efe3fSMike Christie cpu_to_le16( 245d00efe3fSMike Christie ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE); 246d00efe3fSMike Christie else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE) 247d00efe3fSMike Christie init_fw_cb->ipv6_addtl_opts |= 248d00efe3fSMike Christie cpu_to_le16( 249d00efe3fSMike Christie IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE); 250d00efe3fSMike Christie else 251d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for " 252d00efe3fSMike Christie "IPv6 addr\n"); 253d00efe3fSMike Christie break; 254d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG: 255d00efe3fSMike Christie /* Autocfg applies to even interface */ 256d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 257d00efe3fSMike Christie break; 258d00efe3fSMike Christie 259d00efe3fSMike Christie if (iface_param->value[0] == 260d00efe3fSMike Christie ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE) 261d00efe3fSMike Christie init_fw_cb->ipv6_addtl_opts |= cpu_to_le16( 262d00efe3fSMike Christie IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR); 263d00efe3fSMike Christie else if (iface_param->value[0] == 264d00efe3fSMike Christie ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE) 265d00efe3fSMike Christie init_fw_cb->ipv6_addtl_opts &= cpu_to_le16( 266d00efe3fSMike Christie ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR); 267d00efe3fSMike Christie else 268d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for " 269d00efe3fSMike Christie "IPv6 linklocal addr\n"); 270d00efe3fSMike Christie break; 271d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG: 272d00efe3fSMike Christie /* Autocfg applies to even interface */ 273d00efe3fSMike Christie if (iface_param->iface_num & 0x1) 274d00efe3fSMike Christie break; 275d00efe3fSMike Christie 276d00efe3fSMike Christie if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE) 277d00efe3fSMike Christie memset(init_fw_cb->ipv6_dflt_rtr_addr, 0, 278d00efe3fSMike Christie sizeof(init_fw_cb->ipv6_dflt_rtr_addr)); 279d00efe3fSMike Christie break; 280d00efe3fSMike Christie case ISCSI_NET_PARAM_IFACE_ENABLE: 281d00efe3fSMike Christie if (iface_param->value[0] == ISCSI_IFACE_ENABLE) 282d00efe3fSMike Christie init_fw_cb->ipv6_opts |= 283d00efe3fSMike Christie cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE); 284d00efe3fSMike Christie else 285d00efe3fSMike Christie init_fw_cb->ipv6_opts &= 286d00efe3fSMike Christie cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE & 287d00efe3fSMike Christie 0xFFFF); 288d00efe3fSMike Christie break; 289d00efe3fSMike Christie case ISCSI_NET_PARAM_VLAN_ID: 290d00efe3fSMike Christie if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag)) 291d00efe3fSMike Christie break; 292d00efe3fSMike Christie init_fw_cb->ipv6_vlan_tag = *(uint16_t *)iface_param->value; 293d00efe3fSMike Christie break; 294d00efe3fSMike Christie default: 295d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n", 296d00efe3fSMike Christie iface_param->param); 297d00efe3fSMike Christie break; 298d00efe3fSMike Christie } 299d00efe3fSMike Christie } 300d00efe3fSMike Christie 301d00efe3fSMike Christie static void qla4xxx_set_ipv4(struct scsi_qla_host *ha, 302d00efe3fSMike Christie struct iscsi_iface_param_info *iface_param, 303d00efe3fSMike Christie struct addr_ctrl_blk *init_fw_cb) 304d00efe3fSMike Christie { 305d00efe3fSMike Christie switch (iface_param->param) { 306d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV4_ADDR: 307d00efe3fSMike Christie memcpy(init_fw_cb->ipv4_addr, iface_param->value, 308d00efe3fSMike Christie sizeof(init_fw_cb->ipv4_addr)); 309d00efe3fSMike Christie break; 310d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV4_SUBNET: 311d00efe3fSMike Christie memcpy(init_fw_cb->ipv4_subnet, iface_param->value, 312d00efe3fSMike Christie sizeof(init_fw_cb->ipv4_subnet)); 313d00efe3fSMike Christie break; 314d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV4_GW: 315d00efe3fSMike Christie memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value, 316d00efe3fSMike Christie sizeof(init_fw_cb->ipv4_gw_addr)); 317d00efe3fSMike Christie break; 318d00efe3fSMike Christie case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 319d00efe3fSMike Christie if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP) 320d00efe3fSMike Christie init_fw_cb->ipv4_tcp_opts |= 321d00efe3fSMike Christie cpu_to_le16(TCPOPT_DHCP_ENABLE); 322d00efe3fSMike Christie else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC) 323d00efe3fSMike Christie init_fw_cb->ipv4_tcp_opts &= 324d00efe3fSMike Christie cpu_to_le16(~TCPOPT_DHCP_ENABLE); 325d00efe3fSMike Christie else 326d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n"); 327d00efe3fSMike Christie break; 328d00efe3fSMike Christie case ISCSI_NET_PARAM_IFACE_ENABLE: 329d00efe3fSMike Christie if (iface_param->value[0] == ISCSI_IFACE_ENABLE) 330d00efe3fSMike Christie init_fw_cb->ipv4_ip_opts |= 3312bab08fcSVikas Chaudhary cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE); 332d00efe3fSMike Christie else 333d00efe3fSMike Christie init_fw_cb->ipv4_ip_opts &= 3342bab08fcSVikas Chaudhary cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE & 335d00efe3fSMike Christie 0xFFFF); 336d00efe3fSMike Christie break; 337d00efe3fSMike Christie case ISCSI_NET_PARAM_VLAN_ID: 338d00efe3fSMike Christie if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag)) 339d00efe3fSMike Christie break; 340d00efe3fSMike Christie init_fw_cb->ipv4_vlan_tag = *(uint16_t *)iface_param->value; 341d00efe3fSMike Christie break; 342d00efe3fSMike Christie default: 343d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n", 344d00efe3fSMike Christie iface_param->param); 345d00efe3fSMike Christie break; 346d00efe3fSMike Christie } 347d00efe3fSMike Christie } 348d00efe3fSMike Christie 349d00efe3fSMike Christie static void 350d00efe3fSMike Christie qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb) 351d00efe3fSMike Christie { 352d00efe3fSMike Christie struct addr_ctrl_blk_def *acb; 353d00efe3fSMike Christie acb = (struct addr_ctrl_blk_def *)init_fw_cb; 354d00efe3fSMike Christie memset(acb->reserved1, 0, sizeof(acb->reserved1)); 355d00efe3fSMike Christie memset(acb->reserved2, 0, sizeof(acb->reserved2)); 356d00efe3fSMike Christie memset(acb->reserved3, 0, sizeof(acb->reserved3)); 357d00efe3fSMike Christie memset(acb->reserved4, 0, sizeof(acb->reserved4)); 358d00efe3fSMike Christie memset(acb->reserved5, 0, sizeof(acb->reserved5)); 359d00efe3fSMike Christie memset(acb->reserved6, 0, sizeof(acb->reserved6)); 360d00efe3fSMike Christie memset(acb->reserved7, 0, sizeof(acb->reserved7)); 361d00efe3fSMike Christie memset(acb->reserved8, 0, sizeof(acb->reserved8)); 362d00efe3fSMike Christie memset(acb->reserved9, 0, sizeof(acb->reserved9)); 363d00efe3fSMike Christie memset(acb->reserved10, 0, sizeof(acb->reserved10)); 364d00efe3fSMike Christie memset(acb->reserved11, 0, sizeof(acb->reserved11)); 365d00efe3fSMike Christie memset(acb->reserved12, 0, sizeof(acb->reserved12)); 366d00efe3fSMike Christie memset(acb->reserved13, 0, sizeof(acb->reserved13)); 367d00efe3fSMike Christie memset(acb->reserved14, 0, sizeof(acb->reserved14)); 368d00efe3fSMike Christie memset(acb->reserved15, 0, sizeof(acb->reserved15)); 369d00efe3fSMike Christie } 370d00efe3fSMike Christie 371d00efe3fSMike Christie static int 372d00efe3fSMike Christie qla4xxx_iface_set_param(struct Scsi_Host *shost, char *data, int count) 373d00efe3fSMike Christie { 374d00efe3fSMike Christie struct scsi_qla_host *ha = to_qla_host(shost); 375d00efe3fSMike Christie int rval = 0; 376d00efe3fSMike Christie struct iscsi_iface_param_info *iface_param = NULL; 377d00efe3fSMike Christie struct addr_ctrl_blk *init_fw_cb = NULL; 378d00efe3fSMike Christie dma_addr_t init_fw_cb_dma; 379d00efe3fSMike Christie uint32_t mbox_cmd[MBOX_REG_COUNT]; 380d00efe3fSMike Christie uint32_t mbox_sts[MBOX_REG_COUNT]; 381d00efe3fSMike Christie uint32_t total_param_count; 382d00efe3fSMike Christie uint32_t length; 383d00efe3fSMike Christie 384d00efe3fSMike Christie init_fw_cb = dma_alloc_coherent(&ha->pdev->dev, 385d00efe3fSMike Christie sizeof(struct addr_ctrl_blk), 386d00efe3fSMike Christie &init_fw_cb_dma, GFP_KERNEL); 387d00efe3fSMike Christie if (!init_fw_cb) { 388d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n", 389d00efe3fSMike Christie __func__); 390d00efe3fSMike Christie return -ENOMEM; 391d00efe3fSMike Christie } 392d00efe3fSMike Christie 393d00efe3fSMike Christie memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk)); 394d00efe3fSMike Christie memset(&mbox_cmd, 0, sizeof(mbox_cmd)); 395d00efe3fSMike Christie memset(&mbox_sts, 0, sizeof(mbox_sts)); 396d00efe3fSMike Christie 397d00efe3fSMike Christie if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) { 398d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__); 399d00efe3fSMike Christie rval = -EIO; 400d00efe3fSMike Christie goto exit_init_fw_cb; 401d00efe3fSMike Christie } 402d00efe3fSMike Christie 403d00efe3fSMike Christie total_param_count = count; 404d00efe3fSMike Christie iface_param = (struct iscsi_iface_param_info *)data; 405d00efe3fSMike Christie 406d00efe3fSMike Christie for ( ; total_param_count != 0; total_param_count--) { 407d00efe3fSMike Christie length = iface_param->len; 408d00efe3fSMike Christie 409d00efe3fSMike Christie if (iface_param->param_type != ISCSI_NET_PARAM) 410d00efe3fSMike Christie continue; 411d00efe3fSMike Christie 412d00efe3fSMike Christie switch (iface_param->iface_type) { 413d00efe3fSMike Christie case ISCSI_IFACE_TYPE_IPV4: 414d00efe3fSMike Christie switch (iface_param->iface_num) { 415d00efe3fSMike Christie case 0: 416d00efe3fSMike Christie qla4xxx_set_ipv4(ha, iface_param, init_fw_cb); 417d00efe3fSMike Christie break; 418d00efe3fSMike Christie default: 419d00efe3fSMike Christie /* Cannot have more than one IPv4 interface */ 420d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface " 421d00efe3fSMike Christie "number = %d\n", 422d00efe3fSMike Christie iface_param->iface_num); 423d00efe3fSMike Christie break; 424d00efe3fSMike Christie } 425d00efe3fSMike Christie break; 426d00efe3fSMike Christie case ISCSI_IFACE_TYPE_IPV6: 427d00efe3fSMike Christie switch (iface_param->iface_num) { 428d00efe3fSMike Christie case 0: 429d00efe3fSMike Christie case 1: 430d00efe3fSMike Christie qla4xxx_set_ipv6(ha, iface_param, init_fw_cb); 431d00efe3fSMike Christie break; 432d00efe3fSMike Christie default: 433d00efe3fSMike Christie /* Cannot have more than two IPv6 interface */ 434d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface " 435d00efe3fSMike Christie "number = %d\n", 436d00efe3fSMike Christie iface_param->iface_num); 437d00efe3fSMike Christie break; 438d00efe3fSMike Christie } 439d00efe3fSMike Christie break; 440d00efe3fSMike Christie default: 441d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "Invalid iface type\n"); 442d00efe3fSMike Christie break; 443d00efe3fSMike Christie } 444d00efe3fSMike Christie 445d00efe3fSMike Christie iface_param = (struct iscsi_iface_param_info *) 446d00efe3fSMike Christie ((uint8_t *)iface_param + 447d00efe3fSMike Christie sizeof(struct iscsi_iface_param_info) + length); 448d00efe3fSMike Christie } 449d00efe3fSMike Christie 450d00efe3fSMike Christie init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A); 451d00efe3fSMike Christie 452d00efe3fSMike Christie rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB, 453d00efe3fSMike Christie sizeof(struct addr_ctrl_blk), 454d00efe3fSMike Christie FLASH_OPT_RMW_COMMIT); 455d00efe3fSMike Christie if (rval != QLA_SUCCESS) { 456d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n", 457d00efe3fSMike Christie __func__); 458d00efe3fSMike Christie rval = -EIO; 459d00efe3fSMike Christie goto exit_init_fw_cb; 460d00efe3fSMike Christie } 461d00efe3fSMike Christie 462d00efe3fSMike Christie qla4xxx_disable_acb(ha); 463d00efe3fSMike Christie 464d00efe3fSMike Christie qla4xxx_initcb_to_acb(init_fw_cb); 465d00efe3fSMike Christie 466d00efe3fSMike Christie rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma); 467d00efe3fSMike Christie if (rval != QLA_SUCCESS) { 468d00efe3fSMike Christie ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n", 469d00efe3fSMike Christie __func__); 470d00efe3fSMike Christie rval = -EIO; 471d00efe3fSMike Christie goto exit_init_fw_cb; 472d00efe3fSMike Christie } 473d00efe3fSMike Christie 474d00efe3fSMike Christie memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk)); 475d00efe3fSMike Christie qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb, 476d00efe3fSMike Christie init_fw_cb_dma); 477d00efe3fSMike Christie 478d00efe3fSMike Christie exit_init_fw_cb: 479d00efe3fSMike Christie dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk), 480d00efe3fSMike Christie init_fw_cb, init_fw_cb_dma); 481d00efe3fSMike Christie 482d00efe3fSMike Christie return rval; 483d00efe3fSMike Christie } 484d00efe3fSMike Christie 485afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 486afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 487afaf5a2dSDavid Somayajulu { 488afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 489afaf5a2dSDavid Somayajulu int len; 490afaf5a2dSDavid Somayajulu 491afaf5a2dSDavid Somayajulu switch (param) { 492afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 493afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 494afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 495afaf5a2dSDavid Somayajulu break; 496afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 497afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 498afaf5a2dSDavid Somayajulu break; 4993b2bef1fSVikas Chaudhary case ISCSI_PARAM_TARGET_ALIAS: 5003b2bef1fSVikas Chaudhary len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 5013b2bef1fSVikas Chaudhary ddb_entry->iscsi_alias); 5023b2bef1fSVikas Chaudhary break; 503afaf5a2dSDavid Somayajulu default: 504afaf5a2dSDavid Somayajulu return -ENOSYS; 505afaf5a2dSDavid Somayajulu } 506afaf5a2dSDavid Somayajulu 507afaf5a2dSDavid Somayajulu return len; 508afaf5a2dSDavid Somayajulu } 509afaf5a2dSDavid Somayajulu 510afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 511afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 512afaf5a2dSDavid Somayajulu { 513afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 514afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 515afaf5a2dSDavid Somayajulu int len; 516afaf5a2dSDavid Somayajulu 517afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 518afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 519afaf5a2dSDavid Somayajulu 520afaf5a2dSDavid Somayajulu switch (param) { 521afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 522afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 523afaf5a2dSDavid Somayajulu break; 524afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 525afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 52663779436SHarvey Harrison len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); 527afaf5a2dSDavid Somayajulu break; 528afaf5a2dSDavid Somayajulu default: 529afaf5a2dSDavid Somayajulu return -ENOSYS; 530afaf5a2dSDavid Somayajulu } 531afaf5a2dSDavid Somayajulu 532afaf5a2dSDavid Somayajulu return len; 533afaf5a2dSDavid Somayajulu } 534afaf5a2dSDavid Somayajulu 5352174a04eSMike Christie static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, 5362174a04eSMike Christie enum iscsi_tgt_dscvr type, uint32_t enable, 5372174a04eSMike Christie struct sockaddr *dst_addr) 538afaf5a2dSDavid Somayajulu { 539afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 540afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 541afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 542afaf5a2dSDavid Somayajulu int ret = 0; 543afaf5a2dSDavid Somayajulu 544afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 545afaf5a2dSDavid Somayajulu 546afaf5a2dSDavid Somayajulu switch (type) { 547afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 548afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 549afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 550afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 551afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 552afaf5a2dSDavid Somayajulu ret = -EIO; 553afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 554afaf5a2dSDavid Somayajulu /* 555afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 556afaf5a2dSDavid Somayajulu */ 557afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 558afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 559afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 560afaf5a2dSDavid Somayajulu ret = -EIO; 561afaf5a2dSDavid Somayajulu } else 562afaf5a2dSDavid Somayajulu ret = -ENOSYS; 563afaf5a2dSDavid Somayajulu break; 564afaf5a2dSDavid Somayajulu default: 565afaf5a2dSDavid Somayajulu ret = -ENOSYS; 566afaf5a2dSDavid Somayajulu } 567afaf5a2dSDavid Somayajulu return ret; 568afaf5a2dSDavid Somayajulu } 569afaf5a2dSDavid Somayajulu 570afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 571afaf5a2dSDavid Somayajulu { 572afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 573afaf5a2dSDavid Somayajulu return; 574afaf5a2dSDavid Somayajulu 575afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 57626974789SMike Christie atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 577afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 578afaf5a2dSDavid Somayajulu } 579afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 580afaf5a2dSDavid Somayajulu } 581afaf5a2dSDavid Somayajulu 582afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 583afaf5a2dSDavid Somayajulu { 584afaf5a2dSDavid Somayajulu int err; 585afaf5a2dSDavid Somayajulu 5863038727cSVikas Chaudhary ddb_entry->sess->recovery_tmo = ql4xsess_recovery_tmo; 5873013cea8SVikas Chaudhary 588afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 589afaf5a2dSDavid Somayajulu if (err) { 590afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 591afaf5a2dSDavid Somayajulu return err; 592afaf5a2dSDavid Somayajulu } 593afaf5a2dSDavid Somayajulu 5945d91e209SMike Christie ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); 595afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 596afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 597afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 598afaf5a2dSDavid Somayajulu return -ENOMEM; 599afaf5a2dSDavid Somayajulu } 600b635930dSMike Christie 601b635930dSMike Christie /* finally ready to go */ 602b635930dSMike Christie iscsi_unblock_session(ddb_entry->sess); 603afaf5a2dSDavid Somayajulu return 0; 604afaf5a2dSDavid Somayajulu } 605afaf5a2dSDavid Somayajulu 606afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 607afaf5a2dSDavid Somayajulu { 608afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 609afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 610afaf5a2dSDavid Somayajulu 6115d91e209SMike Christie sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, 6125d91e209SMike Christie sizeof(struct ddb_entry)); 613afaf5a2dSDavid Somayajulu if (!sess) 614afaf5a2dSDavid Somayajulu return NULL; 615afaf5a2dSDavid Somayajulu 616afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 617afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 618afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 619afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 620afaf5a2dSDavid Somayajulu return ddb_entry; 621afaf5a2dSDavid Somayajulu } 622afaf5a2dSDavid Somayajulu 623024f801fSMike Christie static void qla4xxx_scan_start(struct Scsi_Host *shost) 624024f801fSMike Christie { 625024f801fSMike Christie struct scsi_qla_host *ha = shost_priv(shost); 626024f801fSMike Christie struct ddb_entry *ddb_entry, *ddbtemp; 627024f801fSMike Christie 628024f801fSMike Christie /* finish setup of sessions that were already setup in firmware */ 629024f801fSMike Christie list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 630024f801fSMike Christie if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 631024f801fSMike Christie qla4xxx_add_sess(ddb_entry); 632024f801fSMike Christie } 633024f801fSMike Christie } 634024f801fSMike Christie 635afaf5a2dSDavid Somayajulu /* 636afaf5a2dSDavid Somayajulu * Timer routines 637afaf5a2dSDavid Somayajulu */ 638afaf5a2dSDavid Somayajulu 639afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 640afaf5a2dSDavid Somayajulu unsigned long interval) 641afaf5a2dSDavid Somayajulu { 642afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 643afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 644afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 645afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 646afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 647afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 648afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 649afaf5a2dSDavid Somayajulu ha->timer_active = 1; 650afaf5a2dSDavid Somayajulu } 651afaf5a2dSDavid Somayajulu 652afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 653afaf5a2dSDavid Somayajulu { 654afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 655afaf5a2dSDavid Somayajulu ha->timer_active = 0; 656afaf5a2dSDavid Somayajulu } 657afaf5a2dSDavid Somayajulu 658afaf5a2dSDavid Somayajulu /*** 659afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 660afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 661afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 662afaf5a2dSDavid Somayajulu * 663f4f5df23SVikas Chaudhary * This routine marks a device missing and close connection. 664afaf5a2dSDavid Somayajulu **/ 665afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 666afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 667afaf5a2dSDavid Somayajulu { 668f4f5df23SVikas Chaudhary if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { 669afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 670f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", 671f4f5df23SVikas Chaudhary ha->host_no, ddb_entry->fw_ddb_index)); 672f4f5df23SVikas Chaudhary } else 673f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, 674f4f5df23SVikas Chaudhary ddb_entry->fw_ddb_index)) 675f4f5df23SVikas Chaudhary 676b635930dSMike Christie iscsi_block_session(ddb_entry->sess); 677e5bd7b54SMike Christie iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 678afaf5a2dSDavid Somayajulu } 679afaf5a2dSDavid Somayajulu 680f4f5df23SVikas Chaudhary /** 681f4f5df23SVikas Chaudhary * qla4xxx_mark_all_devices_missing - mark all devices as missing. 682f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 683f4f5df23SVikas Chaudhary * 684f4f5df23SVikas Chaudhary * This routine marks a device missing and resets the relogin retry count. 685f4f5df23SVikas Chaudhary **/ 686f4f5df23SVikas Chaudhary void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) 687f4f5df23SVikas Chaudhary { 688f4f5df23SVikas Chaudhary struct ddb_entry *ddb_entry, *ddbtemp; 689f4f5df23SVikas Chaudhary list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 690f4f5df23SVikas Chaudhary qla4xxx_mark_device_missing(ha, ddb_entry); 691f4f5df23SVikas Chaudhary } 692f4f5df23SVikas Chaudhary } 693f4f5df23SVikas Chaudhary 694afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 695afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 6968f0722caSVikas Chaudhary struct scsi_cmnd *cmd) 697afaf5a2dSDavid Somayajulu { 698afaf5a2dSDavid Somayajulu struct srb *srb; 699afaf5a2dSDavid Somayajulu 700afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 701afaf5a2dSDavid Somayajulu if (!srb) 702afaf5a2dSDavid Somayajulu return srb; 703afaf5a2dSDavid Somayajulu 70409a0f719SVikas Chaudhary kref_init(&srb->srb_ref); 705afaf5a2dSDavid Somayajulu srb->ha = ha; 706afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 707afaf5a2dSDavid Somayajulu srb->cmd = cmd; 708afaf5a2dSDavid Somayajulu srb->flags = 0; 7095369887aSVikas Chaudhary CMD_SP(cmd) = (void *)srb; 710afaf5a2dSDavid Somayajulu 711afaf5a2dSDavid Somayajulu return srb; 712afaf5a2dSDavid Somayajulu } 713afaf5a2dSDavid Somayajulu 714afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 715afaf5a2dSDavid Somayajulu { 716afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 717afaf5a2dSDavid Somayajulu 718afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 7195f7186c8SFUJITA Tomonori scsi_dma_unmap(cmd); 720afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 721afaf5a2dSDavid Somayajulu } 7225369887aSVikas Chaudhary CMD_SP(cmd) = NULL; 723afaf5a2dSDavid Somayajulu } 724afaf5a2dSDavid Somayajulu 72509a0f719SVikas Chaudhary void qla4xxx_srb_compl(struct kref *ref) 726afaf5a2dSDavid Somayajulu { 72709a0f719SVikas Chaudhary struct srb *srb = container_of(ref, struct srb, srb_ref); 728afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 72909a0f719SVikas Chaudhary struct scsi_qla_host *ha = srb->ha; 730afaf5a2dSDavid Somayajulu 731afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 732afaf5a2dSDavid Somayajulu 733afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 734afaf5a2dSDavid Somayajulu 735afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 736afaf5a2dSDavid Somayajulu } 737afaf5a2dSDavid Somayajulu 738afaf5a2dSDavid Somayajulu /** 739afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 7408f0722caSVikas Chaudhary * @host: scsi host 741afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 742afaf5a2dSDavid Somayajulu * 743afaf5a2dSDavid Somayajulu * Remarks: 744afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 745afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 746afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 747afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 748afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 749afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 750afaf5a2dSDavid Somayajulu **/ 7518f0722caSVikas Chaudhary static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) 752afaf5a2dSDavid Somayajulu { 7538f0722caSVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(host); 754afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 7557fb1921bSMike Christie struct iscsi_cls_session *sess = ddb_entry->sess; 756afaf5a2dSDavid Somayajulu struct srb *srb; 757afaf5a2dSDavid Somayajulu int rval; 758afaf5a2dSDavid Somayajulu 7592232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 7602232be0dSLalit Chandivade if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) 7612232be0dSLalit Chandivade cmd->result = DID_NO_CONNECT << 16; 7622232be0dSLalit Chandivade else 7632232be0dSLalit Chandivade cmd->result = DID_REQUEUE << 16; 7642232be0dSLalit Chandivade goto qc_fail_command; 7652232be0dSLalit Chandivade } 7662232be0dSLalit Chandivade 7677fb1921bSMike Christie if (!sess) { 7687fb1921bSMike Christie cmd->result = DID_IMM_RETRY << 16; 7697fb1921bSMike Christie goto qc_fail_command; 7707fb1921bSMike Christie } 7717fb1921bSMike Christie 7727fb1921bSMike Christie rval = iscsi_session_chkready(sess); 7737fb1921bSMike Christie if (rval) { 7747fb1921bSMike Christie cmd->result = rval; 7757fb1921bSMike Christie goto qc_fail_command; 7767fb1921bSMike Christie } 7777fb1921bSMike Christie 778afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 779afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 780afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 781afaf5a2dSDavid Somayajulu goto qc_fail_command; 782afaf5a2dSDavid Somayajulu } 783c5e98e91SMike Christie return SCSI_MLQUEUE_TARGET_BUSY; 784afaf5a2dSDavid Somayajulu } 785afaf5a2dSDavid Somayajulu 786f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 787f4f5df23SVikas Chaudhary test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 788f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA, &ha->dpc_flags) || 789f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 790f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 791f4f5df23SVikas Chaudhary !test_bit(AF_ONLINE, &ha->flags) || 792f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) 793477ffb9dSDavid C Somayajulu goto qc_host_busy; 794477ffb9dSDavid C Somayajulu 7958f0722caSVikas Chaudhary srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd); 796afaf5a2dSDavid Somayajulu if (!srb) 7978f0722caSVikas Chaudhary goto qc_host_busy; 798afaf5a2dSDavid Somayajulu 799afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 800afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 801afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 802afaf5a2dSDavid Somayajulu 803afaf5a2dSDavid Somayajulu return 0; 804afaf5a2dSDavid Somayajulu 805afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 806afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 807afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 808afaf5a2dSDavid Somayajulu 809afaf5a2dSDavid Somayajulu qc_host_busy: 810afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 811afaf5a2dSDavid Somayajulu 812afaf5a2dSDavid Somayajulu qc_fail_command: 8138f0722caSVikas Chaudhary cmd->scsi_done(cmd); 814afaf5a2dSDavid Somayajulu 815afaf5a2dSDavid Somayajulu return 0; 816afaf5a2dSDavid Somayajulu } 817afaf5a2dSDavid Somayajulu 818afaf5a2dSDavid Somayajulu /** 819afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 820afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 821afaf5a2dSDavid Somayajulu * 822afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 823afaf5a2dSDavid Somayajulu **/ 824afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 825afaf5a2dSDavid Somayajulu { 826afaf5a2dSDavid Somayajulu if (ha->queues) 827afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 828afaf5a2dSDavid Somayajulu ha->queues_dma); 829afaf5a2dSDavid Somayajulu 830afaf5a2dSDavid Somayajulu ha->queues_len = 0; 831afaf5a2dSDavid Somayajulu ha->queues = NULL; 832afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 833afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 834afaf5a2dSDavid Somayajulu ha->request_dma = 0; 835afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 836afaf5a2dSDavid Somayajulu ha->response_dma = 0; 837afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 838afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 839afaf5a2dSDavid Somayajulu 840afaf5a2dSDavid Somayajulu /* Free srb pool. */ 841afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 842afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 843afaf5a2dSDavid Somayajulu 844afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 845afaf5a2dSDavid Somayajulu 846afaf5a2dSDavid Somayajulu /* release io space registers */ 847f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 848f4f5df23SVikas Chaudhary if (ha->nx_pcibase) 849f4f5df23SVikas Chaudhary iounmap( 850f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)ha->nx_pcibase); 851f4f5df23SVikas Chaudhary } else if (ha->reg) 852afaf5a2dSDavid Somayajulu iounmap(ha->reg); 853afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 854afaf5a2dSDavid Somayajulu } 855afaf5a2dSDavid Somayajulu 856afaf5a2dSDavid Somayajulu /** 857afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 858afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 859afaf5a2dSDavid Somayajulu * 860afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 861afaf5a2dSDavid Somayajulu * for srbs. 862afaf5a2dSDavid Somayajulu **/ 863afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 864afaf5a2dSDavid Somayajulu { 865afaf5a2dSDavid Somayajulu unsigned long align; 866afaf5a2dSDavid Somayajulu 867afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 868afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 869afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 870afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 871afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 872afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 873afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 874afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 875afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 876c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 877afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 878afaf5a2dSDavid Somayajulu 879afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 880afaf5a2dSDavid Somayajulu } 881afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 882afaf5a2dSDavid Somayajulu 883afaf5a2dSDavid Somayajulu /* 884afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 885afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 886afaf5a2dSDavid Somayajulu */ 887afaf5a2dSDavid Somayajulu align = 0; 888afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 889afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 890afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 891afaf5a2dSDavid Somayajulu 892afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 893afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 894afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 895afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 896afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 897afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 898afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 899afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 900afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 901afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 902afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 903afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 904afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 905afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 906afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 907afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 908afaf5a2dSDavid Somayajulu 909afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 910afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 911afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 912afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 913c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 914afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 915afaf5a2dSDavid Somayajulu 916afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 917afaf5a2dSDavid Somayajulu } 918afaf5a2dSDavid Somayajulu 919afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 920afaf5a2dSDavid Somayajulu 921afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 922afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 923afaf5a2dSDavid Somayajulu return QLA_ERROR; 924afaf5a2dSDavid Somayajulu } 925afaf5a2dSDavid Somayajulu 926afaf5a2dSDavid Somayajulu /** 927f4f5df23SVikas Chaudhary * qla4_8xxx_check_fw_alive - Check firmware health 928f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 929f4f5df23SVikas Chaudhary * 930f4f5df23SVikas Chaudhary * Context: Interrupt 931f4f5df23SVikas Chaudhary **/ 932f4f5df23SVikas Chaudhary static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) 933f4f5df23SVikas Chaudhary { 934f4f5df23SVikas Chaudhary uint32_t fw_heartbeat_counter, halt_status; 935f4f5df23SVikas Chaudhary 936f4f5df23SVikas Chaudhary fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); 9372232be0dSLalit Chandivade /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ 9382232be0dSLalit Chandivade if (fw_heartbeat_counter == 0xffffffff) { 9392232be0dSLalit Chandivade DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " 9402232be0dSLalit Chandivade "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", 9412232be0dSLalit Chandivade ha->host_no, __func__)); 9422232be0dSLalit Chandivade return; 9432232be0dSLalit Chandivade } 944f4f5df23SVikas Chaudhary 945f4f5df23SVikas Chaudhary if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { 946f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat++; 947f4f5df23SVikas Chaudhary /* FW not alive after 2 seconds */ 948f4f5df23SVikas Chaudhary if (ha->seconds_since_last_heartbeat == 2) { 949f4f5df23SVikas Chaudhary ha->seconds_since_last_heartbeat = 0; 950f4f5df23SVikas Chaudhary halt_status = qla4_8xxx_rd_32(ha, 951f4f5df23SVikas Chaudhary QLA82XX_PEG_HALT_STATUS1); 95268d92ebfSVikas Chaudhary 95368d92ebfSVikas Chaudhary ql4_printk(KERN_INFO, ha, 95468d92ebfSVikas Chaudhary "scsi(%ld): %s, Dumping hw/fw registers:\n " 95568d92ebfSVikas Chaudhary " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:" 95668d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:" 95768d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:" 95868d92ebfSVikas Chaudhary " 0x%x,\n PEG_NET_4_PC: 0x%x\n", 95968d92ebfSVikas Chaudhary ha->host_no, __func__, halt_status, 96068d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, 96168d92ebfSVikas Chaudhary QLA82XX_PEG_HALT_STATUS2), 96268d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 + 96368d92ebfSVikas Chaudhary 0x3c), 96468d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 + 96568d92ebfSVikas Chaudhary 0x3c), 96668d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 + 96768d92ebfSVikas Chaudhary 0x3c), 96868d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 + 96968d92ebfSVikas Chaudhary 0x3c), 97068d92ebfSVikas Chaudhary qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 + 97168d92ebfSVikas Chaudhary 0x3c)); 97221033639SNilesh Javali 973f4f5df23SVikas Chaudhary /* Since we cannot change dev_state in interrupt 974f4f5df23SVikas Chaudhary * context, set appropriate DPC flag then wakeup 975f4f5df23SVikas Chaudhary * DPC */ 976f4f5df23SVikas Chaudhary if (halt_status & HALT_STATUS_UNRECOVERABLE) 977f4f5df23SVikas Chaudhary set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); 978f4f5df23SVikas Chaudhary else { 979f4f5df23SVikas Chaudhary printk("scsi%ld: %s: detect abort needed!\n", 980f4f5df23SVikas Chaudhary ha->host_no, __func__); 981f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 982f4f5df23SVikas Chaudhary } 983f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 98421033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 985f4f5df23SVikas Chaudhary } 98699457d75SLalit Chandivade } else 98799457d75SLalit Chandivade ha->seconds_since_last_heartbeat = 0; 98899457d75SLalit Chandivade 989f4f5df23SVikas Chaudhary ha->fw_heartbeat_counter = fw_heartbeat_counter; 990f4f5df23SVikas Chaudhary } 991f4f5df23SVikas Chaudhary 992f4f5df23SVikas Chaudhary /** 993f4f5df23SVikas Chaudhary * qla4_8xxx_watchdog - Poll dev state 994f4f5df23SVikas Chaudhary * @ha: Pointer to host adapter structure. 995f4f5df23SVikas Chaudhary * 996f4f5df23SVikas Chaudhary * Context: Interrupt 997f4f5df23SVikas Chaudhary **/ 998f4f5df23SVikas Chaudhary void qla4_8xxx_watchdog(struct scsi_qla_host *ha) 999f4f5df23SVikas Chaudhary { 1000f4f5df23SVikas Chaudhary uint32_t dev_state; 1001f4f5df23SVikas Chaudhary 1002f4f5df23SVikas Chaudhary dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 1003f4f5df23SVikas Chaudhary 1004f4f5df23SVikas Chaudhary /* don't poll if reset is going on */ 1005d56a1f7bSLalit Chandivade if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || 1006d56a1f7bSLalit Chandivade test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1007977f46a4SVikas Chaudhary test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) { 1008f4f5df23SVikas Chaudhary if (dev_state == QLA82XX_DEV_NEED_RESET && 1009f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 10103930b8c1SVikas Chaudhary if (!ql4xdontresethba) { 10113930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: " 10123930b8c1SVikas Chaudhary "NEED RESET!\n", __func__); 1013f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1014f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 101521033639SNilesh Javali qla4xxx_mailbox_premature_completion(ha); 10163930b8c1SVikas Chaudhary } 1017f4f5df23SVikas Chaudhary } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && 1018f4f5df23SVikas Chaudhary !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 10193930b8c1SVikas Chaudhary ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", 10203930b8c1SVikas Chaudhary __func__); 1021f4f5df23SVikas Chaudhary set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); 1022f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 1023f4f5df23SVikas Chaudhary } else { 1024f4f5df23SVikas Chaudhary /* Check firmware health */ 1025f4f5df23SVikas Chaudhary qla4_8xxx_check_fw_alive(ha); 1026f4f5df23SVikas Chaudhary } 1027f4f5df23SVikas Chaudhary } 1028f4f5df23SVikas Chaudhary } 1029f4f5df23SVikas Chaudhary 1030f4f5df23SVikas Chaudhary /** 1031afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 1032afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1033afaf5a2dSDavid Somayajulu **/ 1034afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 1035afaf5a2dSDavid Somayajulu { 1036afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1037afaf5a2dSDavid Somayajulu int start_dpc = 0; 10382232be0dSLalit Chandivade uint16_t w; 10392232be0dSLalit Chandivade 10402232be0dSLalit Chandivade /* If we are in the middle of AER/EEH processing 10412232be0dSLalit Chandivade * skip any processing and reschedule the timer 10422232be0dSLalit Chandivade */ 10432232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 10442232be0dSLalit Chandivade mod_timer(&ha->timer, jiffies + HZ); 10452232be0dSLalit Chandivade return; 10462232be0dSLalit Chandivade } 10472232be0dSLalit Chandivade 10482232be0dSLalit Chandivade /* Hardware read to trigger an EEH error during mailbox waits. */ 10492232be0dSLalit Chandivade if (!pci_channel_offline(ha->pdev)) 10502232be0dSLalit Chandivade pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); 1051afaf5a2dSDavid Somayajulu 1052f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1053f4f5df23SVikas Chaudhary qla4_8xxx_watchdog(ha); 1054f4f5df23SVikas Chaudhary } 1055f4f5df23SVikas Chaudhary 1056afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 1057afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 1058afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 1059afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1060afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 1061afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 1062afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 1063afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 1064afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 1065afaf5a2dSDavid Somayajulu == 0) { 1066afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 1067afaf5a2dSDavid Somayajulu retry_relogin_timer, 1068afaf5a2dSDavid Somayajulu INVALID_ENTRY); 1069afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 1070afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1071afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 1072f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: ddb [%d]" 1073afaf5a2dSDavid Somayajulu " login device\n", 1074afaf5a2dSDavid Somayajulu ha->host_no, __func__, 1075afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 1076afaf5a2dSDavid Somayajulu } else 1077afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 1078afaf5a2dSDavid Somayajulu retry_relogin_timer); 1079afaf5a2dSDavid Somayajulu } 1080afaf5a2dSDavid Somayajulu } 1081afaf5a2dSDavid Somayajulu 1082afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 1083afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 1084afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 1085afaf5a2dSDavid Somayajulu /* 1086afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 1087afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 1088afaf5a2dSDavid Somayajulu */ 1089afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 1090afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 1091afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 1092afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 1093afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 1094afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 1095f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: ddb [%d] relogin" 1096afaf5a2dSDavid Somayajulu " timed out-retrying" 1097afaf5a2dSDavid Somayajulu " relogin (%d)\n", 1098afaf5a2dSDavid Somayajulu ha->host_no, 1099afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 1100afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 1101afaf5a2dSDavid Somayajulu relogin_retry_count)) 1102afaf5a2dSDavid Somayajulu ); 1103afaf5a2dSDavid Somayajulu start_dpc++; 1104f4f5df23SVikas Chaudhary DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " 1105cd09b2c3SJustin P. Mattock "initiate relogin after" 1106afaf5a2dSDavid Somayajulu " %d seconds\n", 1107afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 1108afaf5a2dSDavid Somayajulu ddb_entry->target, 1109afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 1110afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 1111afaf5a2dSDavid Somayajulu ); 1112afaf5a2dSDavid Somayajulu 1113afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 1114afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 1115afaf5a2dSDavid Somayajulu } 1116afaf5a2dSDavid Somayajulu } 1117afaf5a2dSDavid Somayajulu } 1118afaf5a2dSDavid Somayajulu 1119f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 1120afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 1121afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 1122afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 1123afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 1124afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 1125afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 1126afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 1127afaf5a2dSDavid Somayajulu } 1128f4f5df23SVikas Chaudhary } 1129afaf5a2dSDavid Somayajulu 1130afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 11311b46807eSLalit Chandivade if (start_dpc || 1132afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1133afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 1134afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 1135f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1136afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1137afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 1138065aa1b4SVikas Chaudhary test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || 1139f4f5df23SVikas Chaudhary test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || 1140f4f5df23SVikas Chaudhary test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || 11411b46807eSLalit Chandivade test_bit(DPC_AEN, &ha->dpc_flags)) { 1142afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 1143afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 1144afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 1145f4f5df23SVikas Chaudhary qla4xxx_wake_dpc(ha); 1146afaf5a2dSDavid Somayajulu } 1147afaf5a2dSDavid Somayajulu 1148afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 1149afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 1150afaf5a2dSDavid Somayajulu 1151afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 1152afaf5a2dSDavid Somayajulu } 1153afaf5a2dSDavid Somayajulu 1154afaf5a2dSDavid Somayajulu /** 1155afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 1156afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1157afaf5a2dSDavid Somayajulu * 1158afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 1159afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 1160afaf5a2dSDavid Somayajulu **/ 1161afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 1162afaf5a2dSDavid Somayajulu { 1163afaf5a2dSDavid Somayajulu uint32_t index = 0; 1164afaf5a2dSDavid Somayajulu unsigned long flags; 1165afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1166afaf5a2dSDavid Somayajulu 1167f4f5df23SVikas Chaudhary unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); 1168f4f5df23SVikas Chaudhary 1169f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " 1170f4f5df23SVikas Chaudhary "complete\n", WAIT_CMD_TOV)); 1171f4f5df23SVikas Chaudhary 1172f4f5df23SVikas Chaudhary while (!time_after_eq(jiffies, wtime)) { 1173afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1174afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 1175afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 1176afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 1177a1e0063dSMike Christie /* 1178a1e0063dSMike Christie * We cannot just check if the index is valid, 1179a1e0063dSMike Christie * becase if we are run from the scsi eh, then 1180a1e0063dSMike Christie * the scsi/block layer is going to prevent 1181a1e0063dSMike Christie * the tag from being released. 1182a1e0063dSMike Christie */ 1183a1e0063dSMike Christie if (cmd != NULL && CMD_SP(cmd)) 1184afaf5a2dSDavid Somayajulu break; 1185afaf5a2dSDavid Somayajulu } 1186afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1187afaf5a2dSDavid Somayajulu 1188afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 1189f4f5df23SVikas Chaudhary if (index == ha->host->can_queue) 1190f4f5df23SVikas Chaudhary return QLA_SUCCESS; 1191afaf5a2dSDavid Somayajulu 1192afaf5a2dSDavid Somayajulu msleep(1000); 1193afaf5a2dSDavid Somayajulu } 1194f4f5df23SVikas Chaudhary /* If we timed out on waiting for commands to come back 1195f4f5df23SVikas Chaudhary * return ERROR. */ 1196f4f5df23SVikas Chaudhary return QLA_ERROR; 1197afaf5a2dSDavid Somayajulu } 1198afaf5a2dSDavid Somayajulu 1199f4f5df23SVikas Chaudhary int qla4xxx_hw_reset(struct scsi_qla_host *ha) 1200afaf5a2dSDavid Somayajulu { 1201afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 1202477ffb9dSDavid C Somayajulu unsigned long flags = 0; 1203477ffb9dSDavid C Somayajulu 1204477ffb9dSDavid C Somayajulu DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); 1205afaf5a2dSDavid Somayajulu 1206f4f5df23SVikas Chaudhary if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) 1207f4f5df23SVikas Chaudhary return QLA_ERROR; 1208f4f5df23SVikas Chaudhary 1209afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1210afaf5a2dSDavid Somayajulu 1211afaf5a2dSDavid Somayajulu /* 1212afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 1213afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 1214afaf5a2dSDavid Somayajulu */ 1215afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1216afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 1217afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 1218afaf5a2dSDavid Somayajulu 1219afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 1220afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 1221afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1222afaf5a2dSDavid Somayajulu 1223afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1224f4f5df23SVikas Chaudhary return QLA_SUCCESS; 1225477ffb9dSDavid C Somayajulu } 1226477ffb9dSDavid C Somayajulu 1227477ffb9dSDavid C Somayajulu /** 1228477ffb9dSDavid C Somayajulu * qla4xxx_soft_reset - performs soft reset. 1229477ffb9dSDavid C Somayajulu * @ha: Pointer to host adapter structure. 1230477ffb9dSDavid C Somayajulu **/ 1231477ffb9dSDavid C Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 1232477ffb9dSDavid C Somayajulu { 1233477ffb9dSDavid C Somayajulu uint32_t max_wait_time; 1234477ffb9dSDavid C Somayajulu unsigned long flags = 0; 1235f931c534SVikas Chaudhary int status; 1236477ffb9dSDavid C Somayajulu uint32_t ctrl_status; 1237477ffb9dSDavid C Somayajulu 1238f931c534SVikas Chaudhary status = qla4xxx_hw_reset(ha); 1239f931c534SVikas Chaudhary if (status != QLA_SUCCESS) 1240f931c534SVikas Chaudhary return status; 1241afaf5a2dSDavid Somayajulu 1242f931c534SVikas Chaudhary status = QLA_ERROR; 1243afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 1244afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 1245afaf5a2dSDavid Somayajulu do { 1246afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1247afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1248afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1249afaf5a2dSDavid Somayajulu 1250afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 1251afaf5a2dSDavid Somayajulu break; 1252afaf5a2dSDavid Somayajulu 1253afaf5a2dSDavid Somayajulu msleep(1000); 1254afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1255afaf5a2dSDavid Somayajulu 1256afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 1257afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 1258afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 1259afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 1260afaf5a2dSDavid Somayajulu ha->host_no)); 1261afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1262afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 1263afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1264afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1265afaf5a2dSDavid Somayajulu } 1266afaf5a2dSDavid Somayajulu 1267afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1268afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1269afaf5a2dSDavid Somayajulu do { 1270afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1271afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1272afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1273afaf5a2dSDavid Somayajulu 1274afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 1275afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1276afaf5a2dSDavid Somayajulu break; 1277afaf5a2dSDavid Somayajulu } 1278afaf5a2dSDavid Somayajulu 1279afaf5a2dSDavid Somayajulu msleep(1000); 1280afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1281afaf5a2dSDavid Somayajulu 1282afaf5a2dSDavid Somayajulu /* 1283afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 1284afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 1285afaf5a2dSDavid Somayajulu */ 1286afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1287afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1288afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 1289afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 1290afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1291afaf5a2dSDavid Somayajulu } 1292afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1293afaf5a2dSDavid Somayajulu 1294afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 1295afaf5a2dSDavid Somayajulu * function is also enabled. 1296afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 1297afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 1298afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 1299afaf5a2dSDavid Somayajulu */ 1300afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 1301afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 1302afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1303afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 1304afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 1305afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1306afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 1307afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 1308afaf5a2dSDavid Somayajulu do { 1309afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1310afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 1311afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1312afaf5a2dSDavid Somayajulu 1313afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 1314afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1315afaf5a2dSDavid Somayajulu break; 1316afaf5a2dSDavid Somayajulu } 1317afaf5a2dSDavid Somayajulu 1318afaf5a2dSDavid Somayajulu msleep(1000); 1319afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 1320afaf5a2dSDavid Somayajulu } 1321afaf5a2dSDavid Somayajulu 1322afaf5a2dSDavid Somayajulu return status; 1323afaf5a2dSDavid Somayajulu } 1324afaf5a2dSDavid Somayajulu 1325afaf5a2dSDavid Somayajulu /** 1326f4f5df23SVikas Chaudhary * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. 1327afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1328f4f5df23SVikas Chaudhary * @res: returned scsi status 1329afaf5a2dSDavid Somayajulu * 1330afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 1331afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 1332afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 1333afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 1334afaf5a2dSDavid Somayajulu **/ 1335f4f5df23SVikas Chaudhary static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) 1336afaf5a2dSDavid Somayajulu { 1337afaf5a2dSDavid Somayajulu struct srb *srb; 1338afaf5a2dSDavid Somayajulu int i; 1339afaf5a2dSDavid Somayajulu unsigned long flags; 1340afaf5a2dSDavid Somayajulu 1341afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1342afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 1343afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 1344afaf5a2dSDavid Somayajulu if (srb != NULL) { 1345f4f5df23SVikas Chaudhary srb->cmd->result = res; 134609a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 1347afaf5a2dSDavid Somayajulu } 1348afaf5a2dSDavid Somayajulu } 1349afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1350afaf5a2dSDavid Somayajulu } 1351afaf5a2dSDavid Somayajulu 1352f4f5df23SVikas Chaudhary void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) 1353f4f5df23SVikas Chaudhary { 1354f4f5df23SVikas Chaudhary clear_bit(AF_ONLINE, &ha->flags); 1355f4f5df23SVikas Chaudhary 1356f4f5df23SVikas Chaudhary /* Disable the board */ 1357f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Disabling the board\n"); 1358f4f5df23SVikas Chaudhary 1359f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 1360f4f5df23SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1361f4f5df23SVikas Chaudhary clear_bit(AF_INIT_DONE, &ha->flags); 1362f4f5df23SVikas Chaudhary } 1363f4f5df23SVikas Chaudhary 1364afaf5a2dSDavid Somayajulu /** 1365afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 1366afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1367afaf5a2dSDavid Somayajulu **/ 1368f4f5df23SVikas Chaudhary static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) 1369afaf5a2dSDavid Somayajulu { 1370f4f5df23SVikas Chaudhary int status = QLA_ERROR; 1371f4f5df23SVikas Chaudhary uint8_t reset_chip = 0; 1372afaf5a2dSDavid Somayajulu 1373afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 1374f4f5df23SVikas Chaudhary scsi_block_requests(ha->host); 1375afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 137650a29aecSMike Christie 1377f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); 1378afaf5a2dSDavid Somayajulu 1379f4f5df23SVikas Chaudhary set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1380afaf5a2dSDavid Somayajulu 1381f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1382f4f5df23SVikas Chaudhary reset_chip = 1; 1383afaf5a2dSDavid Somayajulu 1384f4f5df23SVikas Chaudhary /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) 1385f4f5df23SVikas Chaudhary * do not reset adapter, jump to initialize_adapter */ 1386f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1387f4f5df23SVikas Chaudhary status = QLA_SUCCESS; 1388f4f5df23SVikas Chaudhary goto recover_ha_init_adapter; 1389afaf5a2dSDavid Somayajulu } 1390afaf5a2dSDavid Somayajulu 1391f4f5df23SVikas Chaudhary /* For the ISP-82xx adapter, issue a stop_firmware if invoked 1392f4f5df23SVikas Chaudhary * from eh_host_reset or ioctl module */ 1393f4f5df23SVikas Chaudhary if (is_qla8022(ha) && !reset_chip && 1394f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { 1395f4f5df23SVikas Chaudhary 1396f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1397f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing stop_firmware...\n", 1398f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1399f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_firmware(ha); 1400f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 14012bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1402f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1403f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1404f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1405f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1406f4f5df23SVikas Chaudhary } else { 1407f4f5df23SVikas Chaudhary /* If the stop_firmware fails then 1408f4f5df23SVikas Chaudhary * reset the entire chip */ 1409f4f5df23SVikas Chaudhary reset_chip = 1; 1410f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1411f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 1412f4f5df23SVikas Chaudhary } 1413f4f5df23SVikas Chaudhary } 1414f4f5df23SVikas Chaudhary 1415f4f5df23SVikas Chaudhary /* Issue full chip reset if recovering from a catastrophic error, 1416f4f5df23SVikas Chaudhary * or if stop_firmware fails for ISP-82xx. 1417f4f5df23SVikas Chaudhary * This is the default case for ISP-4xxx */ 1418f4f5df23SVikas Chaudhary if (!is_qla8022(ha) || reset_chip) { 14192bd1e2beSNilesh Javali if (!test_bit(AF_FW_RECOVERY, &ha->flags)) 1420f4f5df23SVikas Chaudhary qla4xxx_cmd_wait(ha); 1421f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1422f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1423f4f5df23SVikas Chaudhary DEBUG2(ql4_printk(KERN_INFO, ha, 1424f4f5df23SVikas Chaudhary "scsi%ld: %s - Performing chip reset..\n", 1425f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1426f4f5df23SVikas Chaudhary status = ha->isp_ops->reset_chip(ha); 1427f4f5df23SVikas Chaudhary } 1428f4f5df23SVikas Chaudhary 1429f4f5df23SVikas Chaudhary /* Flush any pending ddb changed AENs */ 1430f4f5df23SVikas Chaudhary qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1431f4f5df23SVikas Chaudhary 1432f4f5df23SVikas Chaudhary recover_ha_init_adapter: 1433f4f5df23SVikas Chaudhary /* Upon successful firmware/chip reset, re-initialize the adapter */ 1434f4f5df23SVikas Chaudhary if (status == QLA_SUCCESS) { 1435f4f5df23SVikas Chaudhary /* For ISP-4xxx, force function 1 to always initialize 1436f4f5df23SVikas Chaudhary * before function 3 to prevent both funcions from 1437f4f5df23SVikas Chaudhary * stepping on top of the other */ 1438f4f5df23SVikas Chaudhary if (!is_qla8022(ha) && (ha->mac_index == 3)) 1439f4f5df23SVikas Chaudhary ssleep(6); 1440f4f5df23SVikas Chaudhary 1441f4f5df23SVikas Chaudhary /* NOTE: AF_ONLINE flag set upon successful completion of 1442f4f5df23SVikas Chaudhary * qla4xxx_initialize_adapter */ 1443f4f5df23SVikas Chaudhary status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 1444f4f5df23SVikas Chaudhary } 1445f4f5df23SVikas Chaudhary 1446f4f5df23SVikas Chaudhary /* Retry failed adapter initialization, if necessary 1447f4f5df23SVikas Chaudhary * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) 1448f4f5df23SVikas Chaudhary * case to prevent ping-pong resets between functions */ 1449f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags) && 1450f4f5df23SVikas Chaudhary !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1451afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 1452f4f5df23SVikas Chaudhary * resetting the ha. 1453f4f5df23SVikas Chaudhary * Since we don't want to block the DPC for too long 1454f4f5df23SVikas Chaudhary * with multiple resets in the same thread, 1455f4f5df23SVikas Chaudhary * utilize DPC to retry */ 1456afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 1457afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 1458afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 1459afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 1460afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1461afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1462afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1463afaf5a2dSDavid Somayajulu } else { 1464afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 1465afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 1466afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 1467afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 1468afaf5a2dSDavid Somayajulu "retry remaining %d\n", 1469afaf5a2dSDavid Somayajulu ha->host_no, 1470afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 1471afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1472afaf5a2dSDavid Somayajulu } 1473afaf5a2dSDavid Somayajulu 1474afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 1475afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 1476afaf5a2dSDavid Somayajulu * Adapter DEAD */ 1477afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 1478afaf5a2dSDavid Somayajulu "failed - board disabled\n", 1479afaf5a2dSDavid Somayajulu ha->host_no)); 1480f4f5df23SVikas Chaudhary qla4xxx_dead_adapter_cleanup(ha); 1481afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1482afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1483f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, 1484afaf5a2dSDavid Somayajulu &ha->dpc_flags); 1485afaf5a2dSDavid Somayajulu status = QLA_ERROR; 1486afaf5a2dSDavid Somayajulu } 1487afaf5a2dSDavid Somayajulu } 1488afaf5a2dSDavid Somayajulu } else { 1489afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1490f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1491afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 1492afaf5a2dSDavid Somayajulu } 1493afaf5a2dSDavid Somayajulu 1494afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 1495afaf5a2dSDavid Somayajulu 1496f4f5df23SVikas Chaudhary if (test_bit(AF_ONLINE, &ha->flags)) 1497f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1498afaf5a2dSDavid Somayajulu 1499f4f5df23SVikas Chaudhary scsi_unblock_requests(ha->host); 1500f4f5df23SVikas Chaudhary 1501f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 1502f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, 150325985edcSLucas De Marchi status == QLA_ERROR ? "FAILED" : "SUCCEEDED")); 1504f4f5df23SVikas Chaudhary 1505afaf5a2dSDavid Somayajulu return status; 1506afaf5a2dSDavid Somayajulu } 1507afaf5a2dSDavid Somayajulu 15082d7924e6SVikas Chaudhary static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha) 15092d7924e6SVikas Chaudhary { 15102d7924e6SVikas Chaudhary struct ddb_entry *ddb_entry, *dtemp; 15112d7924e6SVikas Chaudhary 15122d7924e6SVikas Chaudhary list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 15132d7924e6SVikas Chaudhary if ((atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) || 15142d7924e6SVikas Chaudhary (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD)) { 15152d7924e6SVikas Chaudhary if (ddb_entry->fw_ddb_device_state == 15162d7924e6SVikas Chaudhary DDB_DS_SESSION_ACTIVE) { 15172d7924e6SVikas Chaudhary atomic_set(&ddb_entry->state, DDB_STATE_ONLINE); 15182d7924e6SVikas Chaudhary ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]" 15192d7924e6SVikas Chaudhary " marked ONLINE\n", ha->host_no, __func__, 15202d7924e6SVikas Chaudhary ddb_entry->fw_ddb_index); 15212d7924e6SVikas Chaudhary 15222d7924e6SVikas Chaudhary iscsi_unblock_session(ddb_entry->sess); 15232d7924e6SVikas Chaudhary } else 15242d7924e6SVikas Chaudhary qla4xxx_relogin_device(ha, ddb_entry); 15252d7924e6SVikas Chaudhary } 15262d7924e6SVikas Chaudhary } 15272d7924e6SVikas Chaudhary } 15282d7924e6SVikas Chaudhary 1529f4f5df23SVikas Chaudhary void qla4xxx_wake_dpc(struct scsi_qla_host *ha) 1530f4f5df23SVikas Chaudhary { 15311b46807eSLalit Chandivade if (ha->dpc_thread) 1532f4f5df23SVikas Chaudhary queue_work(ha->dpc_thread, &ha->dpc_work); 1533f4f5df23SVikas Chaudhary } 1534f4f5df23SVikas Chaudhary 1535afaf5a2dSDavid Somayajulu /** 1536afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1537afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1538afaf5a2dSDavid Somayajulu * 1539afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1540afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1541afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1542afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1543afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1544afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1545afaf5a2dSDavid Somayajulu **/ 1546c4028958SDavid Howells static void qla4xxx_do_dpc(struct work_struct *work) 1547afaf5a2dSDavid Somayajulu { 1548c4028958SDavid Howells struct scsi_qla_host *ha = 1549c4028958SDavid Howells container_of(work, struct scsi_qla_host, dpc_work); 1550afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1551477ffb9dSDavid C Somayajulu int status = QLA_ERROR; 1552afaf5a2dSDavid Somayajulu 1553f26b9044SDavid C Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up." 1554f4f5df23SVikas Chaudhary "flags = 0x%08lx, dpc_flags = 0x%08lx\n", 1555f4f5df23SVikas Chaudhary ha->host_no, __func__, ha->flags, ha->dpc_flags)) 1556afaf5a2dSDavid Somayajulu 1557afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1558afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 15591b46807eSLalit Chandivade return; 1560afaf5a2dSDavid Somayajulu 15612232be0dSLalit Chandivade if (test_bit(AF_EEH_BUSY, &ha->flags)) { 15622232be0dSLalit Chandivade DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", 15632232be0dSLalit Chandivade ha->host_no, __func__, ha->flags)); 15641b46807eSLalit Chandivade return; 15652232be0dSLalit Chandivade } 15662232be0dSLalit Chandivade 1567f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1568f4f5df23SVikas Chaudhary if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { 1569f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1570f4f5df23SVikas Chaudhary qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 1571f4f5df23SVikas Chaudhary QLA82XX_DEV_FAILED); 1572f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1573f4f5df23SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); 1574f4f5df23SVikas Chaudhary qla4_8xxx_device_state_handler(ha); 1575f4f5df23SVikas Chaudhary } 1576f4f5df23SVikas Chaudhary if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { 1577f4f5df23SVikas Chaudhary qla4_8xxx_need_qsnt_handler(ha); 1578f4f5df23SVikas Chaudhary } 1579f4f5df23SVikas Chaudhary } 1580f4f5df23SVikas Chaudhary 1581f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && 1582f4f5df23SVikas Chaudhary (test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1583afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1584f4f5df23SVikas Chaudhary test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { 1585f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 1586f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 1587f4f5df23SVikas Chaudhary ha->host_no, __func__)); 1588f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA, &ha->dpc_flags); 1589f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1590f4f5df23SVikas Chaudhary clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 1591f4f5df23SVikas Chaudhary goto dpc_post_reset_ha; 1592f4f5df23SVikas Chaudhary } 1593f4f5df23SVikas Chaudhary if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || 1594f26b9044SDavid C Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1595f4f5df23SVikas Chaudhary qla4xxx_recover_adapter(ha); 1596afaf5a2dSDavid Somayajulu 1597477ffb9dSDavid C Somayajulu if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1598afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1599afaf5a2dSDavid Somayajulu 1600afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1601afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1602afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1603afaf5a2dSDavid Somayajulu break; 1604afaf5a2dSDavid Somayajulu msleep(1000); 1605afaf5a2dSDavid Somayajulu } 1606afaf5a2dSDavid Somayajulu if (wait_time == 0) 1607afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1608afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1609afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1610f4f5df23SVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 1611477ffb9dSDavid C Somayajulu if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { 1612477ffb9dSDavid C Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 1613f4f5df23SVikas Chaudhary status = qla4xxx_recover_adapter(ha); 1614477ffb9dSDavid C Somayajulu } 1615477ffb9dSDavid C Somayajulu clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); 1616477ffb9dSDavid C Somayajulu if (status == QLA_SUCCESS) 1617f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 1618afaf5a2dSDavid Somayajulu } 1619afaf5a2dSDavid Somayajulu } 1620afaf5a2dSDavid Somayajulu 1621f4f5df23SVikas Chaudhary dpc_post_reset_ha: 1622afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1623afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1624afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1625afaf5a2dSDavid Somayajulu 1626afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1627afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1628afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1629afaf5a2dSDavid Somayajulu 1630065aa1b4SVikas Chaudhary /* ---- link change? --- */ 1631065aa1b4SVikas Chaudhary if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { 1632065aa1b4SVikas Chaudhary if (!test_bit(AF_LINK_UP, &ha->flags)) { 1633065aa1b4SVikas Chaudhary /* ---- link down? --- */ 16342d7924e6SVikas Chaudhary qla4xxx_mark_all_devices_missing(ha); 1635065aa1b4SVikas Chaudhary } else { 1636065aa1b4SVikas Chaudhary /* ---- link up? --- * 1637065aa1b4SVikas Chaudhary * F/W will auto login to all devices ONLY ONCE after 1638065aa1b4SVikas Chaudhary * link up during driver initialization and runtime 1639065aa1b4SVikas Chaudhary * fatal error recovery. Therefore, the driver must 1640065aa1b4SVikas Chaudhary * manually relogin to devices when recovering from 1641065aa1b4SVikas Chaudhary * connection failures, logouts, expired KATO, etc. */ 1642065aa1b4SVikas Chaudhary 16432d7924e6SVikas Chaudhary qla4xxx_relogin_all_devices(ha); 1644065aa1b4SVikas Chaudhary } 1645065aa1b4SVikas Chaudhary } 1646065aa1b4SVikas Chaudhary 1647afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1648afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1649afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1650afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1651afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1652afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1653afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1654afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1655afaf5a2dSDavid Somayajulu 1656afaf5a2dSDavid Somayajulu /* 1657afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1658afaf5a2dSDavid Somayajulu * in continuing further. 1659afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1660afaf5a2dSDavid Somayajulu * the system. 1661afaf5a2dSDavid Somayajulu */ 1662afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1663afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1664afaf5a2dSDavid Somayajulu "need to reset hba\n", 1665afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1666afaf5a2dSDavid Somayajulu break; 1667afaf5a2dSDavid Somayajulu } 1668afaf5a2dSDavid Somayajulu } 1669afaf5a2dSDavid Somayajulu } 16700753b487SVikas Chaudhary 1671afaf5a2dSDavid Somayajulu } 1672afaf5a2dSDavid Somayajulu 1673afaf5a2dSDavid Somayajulu /** 1674afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1675afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1676afaf5a2dSDavid Somayajulu **/ 1677afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1678afaf5a2dSDavid Somayajulu { 1679afaf5a2dSDavid Somayajulu 1680afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1681afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1682f4f5df23SVikas Chaudhary ha->isp_ops->disable_intrs(ha); 1683afaf5a2dSDavid Somayajulu } 1684afaf5a2dSDavid Somayajulu 1685afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1686afaf5a2dSDavid Somayajulu if (ha->timer_active) 1687afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1688afaf5a2dSDavid Somayajulu 1689f4f5df23SVikas Chaudhary /* Kill the kernel thread for this host */ 1690f4f5df23SVikas Chaudhary if (ha->dpc_thread) 1691f4f5df23SVikas Chaudhary destroy_workqueue(ha->dpc_thread); 1692f4f5df23SVikas Chaudhary 1693f4f5df23SVikas Chaudhary /* Put firmware in known state */ 1694f4f5df23SVikas Chaudhary ha->isp_ops->reset_firmware(ha); 1695f4f5df23SVikas Chaudhary 1696f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1697f4f5df23SVikas Chaudhary qla4_8xxx_idc_lock(ha); 1698f4f5df23SVikas Chaudhary qla4_8xxx_clear_drv_active(ha); 1699f4f5df23SVikas Chaudhary qla4_8xxx_idc_unlock(ha); 1700f4f5df23SVikas Chaudhary } 1701f4f5df23SVikas Chaudhary 1702afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1703afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1704f4f5df23SVikas Chaudhary qla4xxx_free_irqs(ha); 1705afaf5a2dSDavid Somayajulu 1706bee4fe8eSDavid C Somayajulu /* free extra memory */ 1707bee4fe8eSDavid C Somayajulu qla4xxx_mem_free(ha); 1708f4f5df23SVikas Chaudhary } 1709bee4fe8eSDavid C Somayajulu 1710f4f5df23SVikas Chaudhary int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) 1711f4f5df23SVikas Chaudhary { 1712f4f5df23SVikas Chaudhary int status = 0; 1713f4f5df23SVikas Chaudhary uint8_t revision_id; 1714f4f5df23SVikas Chaudhary unsigned long mem_base, mem_len, db_base, db_len; 1715f4f5df23SVikas Chaudhary struct pci_dev *pdev = ha->pdev; 1716afaf5a2dSDavid Somayajulu 1717f4f5df23SVikas Chaudhary status = pci_request_regions(pdev, DRIVER_NAME); 1718f4f5df23SVikas Chaudhary if (status) { 1719f4f5df23SVikas Chaudhary printk(KERN_WARNING 1720f4f5df23SVikas Chaudhary "scsi(%ld) Failed to reserve PIO regions (%s) " 1721f4f5df23SVikas Chaudhary "status=%d\n", ha->host_no, pci_name(pdev), status); 1722f4f5df23SVikas Chaudhary goto iospace_error_exit; 1723f4f5df23SVikas Chaudhary } 1724f4f5df23SVikas Chaudhary 1725f4f5df23SVikas Chaudhary pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); 1726f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", 1727f4f5df23SVikas Chaudhary __func__, revision_id)); 1728f4f5df23SVikas Chaudhary ha->revision_id = revision_id; 1729f4f5df23SVikas Chaudhary 1730f4f5df23SVikas Chaudhary /* remap phys address */ 1731f4f5df23SVikas Chaudhary mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ 1732f4f5df23SVikas Chaudhary mem_len = pci_resource_len(pdev, 0); 1733f4f5df23SVikas Chaudhary DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", 1734f4f5df23SVikas Chaudhary __func__, mem_base, mem_len)); 1735f4f5df23SVikas Chaudhary 1736f4f5df23SVikas Chaudhary /* mapping of pcibase pointer */ 1737f4f5df23SVikas Chaudhary ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); 1738f4f5df23SVikas Chaudhary if (!ha->nx_pcibase) { 1739f4f5df23SVikas Chaudhary printk(KERN_ERR 1740f4f5df23SVikas Chaudhary "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); 1741f4f5df23SVikas Chaudhary pci_release_regions(ha->pdev); 1742f4f5df23SVikas Chaudhary goto iospace_error_exit; 1743f4f5df23SVikas Chaudhary } 1744f4f5df23SVikas Chaudhary 1745f4f5df23SVikas Chaudhary /* Mapping of IO base pointer, door bell read and write pointer */ 1746f4f5df23SVikas Chaudhary 1747f4f5df23SVikas Chaudhary /* mapping of IO base pointer */ 1748f4f5df23SVikas Chaudhary ha->qla4_8xxx_reg = 1749f4f5df23SVikas Chaudhary (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + 1750f4f5df23SVikas Chaudhary 0xbc000 + (ha->pdev->devfn << 11)); 1751f4f5df23SVikas Chaudhary 1752f4f5df23SVikas Chaudhary db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ 1753f4f5df23SVikas Chaudhary db_len = pci_resource_len(pdev, 4); 1754f4f5df23SVikas Chaudhary 17552657c800SShyam Sundar ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : 17562657c800SShyam Sundar QLA82XX_CAM_RAM_DB2); 1757f4f5df23SVikas Chaudhary 17582657c800SShyam Sundar return 0; 1759f4f5df23SVikas Chaudhary iospace_error_exit: 1760f4f5df23SVikas Chaudhary return -ENOMEM; 1761afaf5a2dSDavid Somayajulu } 1762afaf5a2dSDavid Somayajulu 1763afaf5a2dSDavid Somayajulu /*** 1764afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1765afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1766afaf5a2dSDavid Somayajulu * 1767afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1768afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1769afaf5a2dSDavid Somayajulu **/ 1770f4f5df23SVikas Chaudhary int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1771afaf5a2dSDavid Somayajulu { 1772afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1773afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1774afaf5a2dSDavid Somayajulu 1775afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1776afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1777afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1778afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1779afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1780c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1781afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1782afaf5a2dSDavid Somayajulu pio = 0; 1783afaf5a2dSDavid Somayajulu } 1784afaf5a2dSDavid Somayajulu } else { 1785c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); 1786afaf5a2dSDavid Somayajulu pio = 0; 1787afaf5a2dSDavid Somayajulu } 1788afaf5a2dSDavid Somayajulu 1789afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1790afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1791afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1792afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1793afaf5a2dSDavid Somayajulu 1794afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1795c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1796afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1797afaf5a2dSDavid Somayajulu 1798afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1799afaf5a2dSDavid Somayajulu } 1800c2660df3SVikas Chaudhary 1801afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1802c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1803afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1804afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1805afaf5a2dSDavid Somayajulu } 1806afaf5a2dSDavid Somayajulu 1807afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1808c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1809afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1810afaf5a2dSDavid Somayajulu 1811afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1812afaf5a2dSDavid Somayajulu } 1813afaf5a2dSDavid Somayajulu 1814afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1815afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1816afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1817afaf5a2dSDavid Somayajulu if (!ha->reg) { 1818c2660df3SVikas Chaudhary ql4_printk(KERN_ERR, ha, 1819afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1820afaf5a2dSDavid Somayajulu 1821afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1822afaf5a2dSDavid Somayajulu } 1823afaf5a2dSDavid Somayajulu 1824afaf5a2dSDavid Somayajulu return 0; 1825afaf5a2dSDavid Somayajulu 1826afaf5a2dSDavid Somayajulu iospace_error_exit: 1827afaf5a2dSDavid Somayajulu return -ENOMEM; 1828afaf5a2dSDavid Somayajulu } 1829afaf5a2dSDavid Somayajulu 1830f4f5df23SVikas Chaudhary static struct isp_operations qla4xxx_isp_ops = { 1831f4f5df23SVikas Chaudhary .iospace_config = qla4xxx_iospace_config, 1832f4f5df23SVikas Chaudhary .pci_config = qla4xxx_pci_config, 1833f4f5df23SVikas Chaudhary .disable_intrs = qla4xxx_disable_intrs, 1834f4f5df23SVikas Chaudhary .enable_intrs = qla4xxx_enable_intrs, 1835f4f5df23SVikas Chaudhary .start_firmware = qla4xxx_start_firmware, 1836f4f5df23SVikas Chaudhary .intr_handler = qla4xxx_intr_handler, 1837f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4xxx_interrupt_service_routine, 1838f4f5df23SVikas Chaudhary .reset_chip = qla4xxx_soft_reset, 1839f4f5df23SVikas Chaudhary .reset_firmware = qla4xxx_hw_reset, 1840f4f5df23SVikas Chaudhary .queue_iocb = qla4xxx_queue_iocb, 1841f4f5df23SVikas Chaudhary .complete_iocb = qla4xxx_complete_iocb, 1842f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, 1843f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, 1844f4f5df23SVikas Chaudhary .get_sys_info = qla4xxx_get_sys_info, 1845f4f5df23SVikas Chaudhary }; 1846f4f5df23SVikas Chaudhary 1847f4f5df23SVikas Chaudhary static struct isp_operations qla4_8xxx_isp_ops = { 1848f4f5df23SVikas Chaudhary .iospace_config = qla4_8xxx_iospace_config, 1849f4f5df23SVikas Chaudhary .pci_config = qla4_8xxx_pci_config, 1850f4f5df23SVikas Chaudhary .disable_intrs = qla4_8xxx_disable_intrs, 1851f4f5df23SVikas Chaudhary .enable_intrs = qla4_8xxx_enable_intrs, 1852f4f5df23SVikas Chaudhary .start_firmware = qla4_8xxx_load_risc, 1853f4f5df23SVikas Chaudhary .intr_handler = qla4_8xxx_intr_handler, 1854f4f5df23SVikas Chaudhary .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, 1855f4f5df23SVikas Chaudhary .reset_chip = qla4_8xxx_isp_reset, 1856f4f5df23SVikas Chaudhary .reset_firmware = qla4_8xxx_stop_firmware, 1857f4f5df23SVikas Chaudhary .queue_iocb = qla4_8xxx_queue_iocb, 1858f4f5df23SVikas Chaudhary .complete_iocb = qla4_8xxx_complete_iocb, 1859f4f5df23SVikas Chaudhary .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, 1860f4f5df23SVikas Chaudhary .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, 1861f4f5df23SVikas Chaudhary .get_sys_info = qla4_8xxx_get_sys_info, 1862f4f5df23SVikas Chaudhary }; 1863f4f5df23SVikas Chaudhary 1864f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1865f4f5df23SVikas Chaudhary { 1866f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); 1867f4f5df23SVikas Chaudhary } 1868f4f5df23SVikas Chaudhary 1869f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) 1870f4f5df23SVikas Chaudhary { 1871f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); 1872f4f5df23SVikas Chaudhary } 1873f4f5df23SVikas Chaudhary 1874f4f5df23SVikas Chaudhary uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1875f4f5df23SVikas Chaudhary { 1876f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); 1877f4f5df23SVikas Chaudhary } 1878f4f5df23SVikas Chaudhary 1879f4f5df23SVikas Chaudhary uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) 1880f4f5df23SVikas Chaudhary { 1881f4f5df23SVikas Chaudhary return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); 1882f4f5df23SVikas Chaudhary } 1883f4f5df23SVikas Chaudhary 1884afaf5a2dSDavid Somayajulu /** 1885afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1886afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1887afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1888afaf5a2dSDavid Somayajulu * 1889afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1890afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1891afaf5a2dSDavid Somayajulu * the driver. 1892afaf5a2dSDavid Somayajulu **/ 1893afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1894afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1895afaf5a2dSDavid Somayajulu { 1896afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1897afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1898afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1899afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1900afaf5a2dSDavid Somayajulu char buf[34]; 1901f4f5df23SVikas Chaudhary struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; 1902f9880e76SPrasanna Mumbai uint32_t dev_state; 1903afaf5a2dSDavid Somayajulu 1904afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1905afaf5a2dSDavid Somayajulu return -1; 1906afaf5a2dSDavid Somayajulu 1907afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1908afaf5a2dSDavid Somayajulu if (host == NULL) { 1909afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1910afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1911afaf5a2dSDavid Somayajulu goto probe_disable_device; 1912afaf5a2dSDavid Somayajulu } 1913afaf5a2dSDavid Somayajulu 1914afaf5a2dSDavid Somayajulu /* Clear our data area */ 1915afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1916afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1917afaf5a2dSDavid Somayajulu 1918afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1919afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1920afaf5a2dSDavid Somayajulu ha->host = host; 1921afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1922afaf5a2dSDavid Somayajulu 19232232be0dSLalit Chandivade pci_enable_pcie_error_reporting(pdev); 19242232be0dSLalit Chandivade 1925f4f5df23SVikas Chaudhary /* Setup Runtime configurable options */ 1926f4f5df23SVikas Chaudhary if (is_qla8022(ha)) { 1927f4f5df23SVikas Chaudhary ha->isp_ops = &qla4_8xxx_isp_ops; 1928f4f5df23SVikas Chaudhary rwlock_init(&ha->hw_lock); 1929f4f5df23SVikas Chaudhary ha->qdr_sn_window = -1; 1930f4f5df23SVikas Chaudhary ha->ddr_mn_window = -1; 1931f4f5df23SVikas Chaudhary ha->curr_window = 255; 1932f4f5df23SVikas Chaudhary ha->func_num = PCI_FUNC(ha->pdev->devfn); 1933f4f5df23SVikas Chaudhary nx_legacy_intr = &legacy_intr[ha->func_num]; 1934f4f5df23SVikas Chaudhary ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; 1935f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_status_reg = 1936f4f5df23SVikas Chaudhary nx_legacy_intr->tgt_status_reg; 1937f4f5df23SVikas Chaudhary ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; 1938f4f5df23SVikas Chaudhary ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; 1939f4f5df23SVikas Chaudhary } else { 1940f4f5df23SVikas Chaudhary ha->isp_ops = &qla4xxx_isp_ops; 1941f4f5df23SVikas Chaudhary } 1942f4f5df23SVikas Chaudhary 19432232be0dSLalit Chandivade /* Set EEH reset type to fundamental if required by hba */ 19442232be0dSLalit Chandivade if (is_qla8022(ha)) 19452232be0dSLalit Chandivade pdev->needs_freset = 1; 19462232be0dSLalit Chandivade 1947afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1948f4f5df23SVikas Chaudhary ret = ha->isp_ops->iospace_config(ha); 1949afaf5a2dSDavid Somayajulu if (ret) 1950f4f5df23SVikas Chaudhary goto probe_failed_ioconfig; 1951afaf5a2dSDavid Somayajulu 1952c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1953afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1954afaf5a2dSDavid Somayajulu 1955afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1956afaf5a2dSDavid Somayajulu 1957afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1958afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1959afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1960afaf5a2dSDavid Somayajulu 1961afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1962f4f5df23SVikas Chaudhary init_completion(&ha->mbx_intr_comp); 1963afaf5a2dSDavid Somayajulu 1964afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1965afaf5a2dSDavid Somayajulu 1966afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1967afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1968c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 1969afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1970afaf5a2dSDavid Somayajulu 1971afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1972afaf5a2dSDavid Somayajulu goto probe_failed; 1973afaf5a2dSDavid Somayajulu } 1974afaf5a2dSDavid Somayajulu 1975f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 1976f4f5df23SVikas Chaudhary (void) qla4_8xxx_get_flash_info(ha); 1977f4f5df23SVikas Chaudhary 1978afaf5a2dSDavid Somayajulu /* 1979afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1980afaf5a2dSDavid Somayajulu * firmware 1981afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1982afaf5a2dSDavid Somayajulu */ 1983afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1984f4f5df23SVikas Chaudhary while ((!test_bit(AF_ONLINE, &ha->flags)) && 1985f4f5df23SVikas Chaudhary init_retry_count++ < MAX_INIT_RETRIES) { 1986f9880e76SPrasanna Mumbai 1987f9880e76SPrasanna Mumbai if (is_qla8022(ha)) { 1988f9880e76SPrasanna Mumbai qla4_8xxx_idc_lock(ha); 1989f9880e76SPrasanna Mumbai dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); 1990f9880e76SPrasanna Mumbai qla4_8xxx_idc_unlock(ha); 1991f9880e76SPrasanna Mumbai if (dev_state == QLA82XX_DEV_FAILED) { 1992f9880e76SPrasanna Mumbai ql4_printk(KERN_WARNING, ha, "%s: don't retry " 1993f9880e76SPrasanna Mumbai "initialize adapter. H/W is in failed state\n", 1994f9880e76SPrasanna Mumbai __func__); 1995f9880e76SPrasanna Mumbai break; 1996f9880e76SPrasanna Mumbai } 1997f9880e76SPrasanna Mumbai } 1998afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1999afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 2000f4f5df23SVikas Chaudhary 2001f4f5df23SVikas Chaudhary if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) 2002f4f5df23SVikas Chaudhary continue; 2003f4f5df23SVikas Chaudhary 2004afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 2005afaf5a2dSDavid Somayajulu } 2006f4f5df23SVikas Chaudhary 2007f4f5df23SVikas Chaudhary if (!test_bit(AF_ONLINE, &ha->flags)) { 2008c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); 2009afaf5a2dSDavid Somayajulu 2010fe998527SLalit Chandivade if (is_qla8022(ha) && ql4xdontresethba) { 2011fe998527SLalit Chandivade /* Put the device in failed state. */ 2012fe998527SLalit Chandivade DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); 2013fe998527SLalit Chandivade qla4_8xxx_idc_lock(ha); 2014fe998527SLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 2015fe998527SLalit Chandivade QLA82XX_DEV_FAILED); 2016fe998527SLalit Chandivade qla4_8xxx_idc_unlock(ha); 2017fe998527SLalit Chandivade } 2018afaf5a2dSDavid Somayajulu ret = -ENODEV; 2019afaf5a2dSDavid Somayajulu goto probe_failed; 2020afaf5a2dSDavid Somayajulu } 2021afaf5a2dSDavid Somayajulu 2022afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 2023afaf5a2dSDavid Somayajulu host->max_channel = 0; 2024afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 2025afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 2026afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 2027afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 2028afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 2029afaf5a2dSDavid Somayajulu 2030afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 2031afaf5a2dSDavid Somayajulu if (ret) { 2032c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, 2033c2660df3SVikas Chaudhary "scsi_init_shared_tag_map failed\n"); 2034afaf5a2dSDavid Somayajulu goto probe_failed; 2035afaf5a2dSDavid Somayajulu } 2036afaf5a2dSDavid Somayajulu 2037afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 2038afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 2039afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 2040afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 2041afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 2042afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 2043c2660df3SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); 2044afaf5a2dSDavid Somayajulu ret = -ENODEV; 2045afaf5a2dSDavid Somayajulu goto probe_failed; 2046afaf5a2dSDavid Somayajulu } 2047c4028958SDavid Howells INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); 2048afaf5a2dSDavid Somayajulu 2049f4f5df23SVikas Chaudhary /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc 2050f4f5df23SVikas Chaudhary * (which is called indirectly by qla4xxx_initialize_adapter), 2051f4f5df23SVikas Chaudhary * so that irqs will be registered after crbinit but before 2052f4f5df23SVikas Chaudhary * mbx_intr_enable. 2053f4f5df23SVikas Chaudhary */ 2054f4f5df23SVikas Chaudhary if (!is_qla8022(ha)) { 2055f4f5df23SVikas Chaudhary ret = qla4xxx_request_irqs(ha); 2056afaf5a2dSDavid Somayajulu if (ret) { 2057f4f5df23SVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to reserve " 2058f4f5df23SVikas Chaudhary "interrupt %d already in use.\n", pdev->irq); 2059afaf5a2dSDavid Somayajulu goto probe_failed; 2060afaf5a2dSDavid Somayajulu } 2061f4f5df23SVikas Chaudhary } 2062afaf5a2dSDavid Somayajulu 20632232be0dSLalit Chandivade pci_save_state(ha->pdev); 2064f4f5df23SVikas Chaudhary ha->isp_ops->enable_intrs(ha); 2065afaf5a2dSDavid Somayajulu 2066afaf5a2dSDavid Somayajulu /* Start timer thread. */ 2067afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 2068afaf5a2dSDavid Somayajulu 2069afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 2070afaf5a2dSDavid Somayajulu 2071afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 2072afaf5a2dSDavid Somayajulu 2073afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 2074afaf5a2dSDavid Somayajulu if (ret) 2075afaf5a2dSDavid Somayajulu goto probe_failed; 2076afaf5a2dSDavid Somayajulu 2077afaf5a2dSDavid Somayajulu printk(KERN_INFO 2078afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 2079afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 2080afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 2081afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 2082afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 2083921601b7SMike Christie scsi_scan_host(host); 2084afaf5a2dSDavid Somayajulu return 0; 2085afaf5a2dSDavid Somayajulu 2086afaf5a2dSDavid Somayajulu probe_failed: 2087afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 2088f4f5df23SVikas Chaudhary 2089f4f5df23SVikas Chaudhary probe_failed_ioconfig: 20902232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 2091afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 2092afaf5a2dSDavid Somayajulu 2093afaf5a2dSDavid Somayajulu probe_disable_device: 2094afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 2095afaf5a2dSDavid Somayajulu 2096afaf5a2dSDavid Somayajulu return ret; 2097afaf5a2dSDavid Somayajulu } 2098afaf5a2dSDavid Somayajulu 2099afaf5a2dSDavid Somayajulu /** 21007eece5a0SKaren Higgins * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize 21017eece5a0SKaren Higgins * @ha: pointer to adapter structure 21027eece5a0SKaren Higgins * 21037eece5a0SKaren Higgins * Mark the other ISP-4xxx port to indicate that the driver is being removed, 21047eece5a0SKaren Higgins * so that the other port will not re-initialize while in the process of 21057eece5a0SKaren Higgins * removing the ha due to driver unload or hba hotplug. 21067eece5a0SKaren Higgins **/ 21077eece5a0SKaren Higgins static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) 21087eece5a0SKaren Higgins { 21097eece5a0SKaren Higgins struct scsi_qla_host *other_ha = NULL; 21107eece5a0SKaren Higgins struct pci_dev *other_pdev = NULL; 21117eece5a0SKaren Higgins int fn = ISP4XXX_PCI_FN_2; 21127eece5a0SKaren Higgins 21137eece5a0SKaren Higgins /*iscsi function numbers for ISP4xxx is 1 and 3*/ 21147eece5a0SKaren Higgins if (PCI_FUNC(ha->pdev->devfn) & BIT_1) 21157eece5a0SKaren Higgins fn = ISP4XXX_PCI_FN_1; 21167eece5a0SKaren Higgins 21177eece5a0SKaren Higgins other_pdev = 21187eece5a0SKaren Higgins pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 21197eece5a0SKaren Higgins ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 21207eece5a0SKaren Higgins fn)); 21217eece5a0SKaren Higgins 21227eece5a0SKaren Higgins /* Get other_ha if other_pdev is valid and state is enable*/ 21237eece5a0SKaren Higgins if (other_pdev) { 21247eece5a0SKaren Higgins if (atomic_read(&other_pdev->enable_cnt)) { 21257eece5a0SKaren Higgins other_ha = pci_get_drvdata(other_pdev); 21267eece5a0SKaren Higgins if (other_ha) { 21277eece5a0SKaren Higgins set_bit(AF_HA_REMOVAL, &other_ha->flags); 21287eece5a0SKaren Higgins DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " 21297eece5a0SKaren Higgins "Prevent %s reinit\n", __func__, 21307eece5a0SKaren Higgins dev_name(&other_ha->pdev->dev))); 21317eece5a0SKaren Higgins } 21327eece5a0SKaren Higgins } 21337eece5a0SKaren Higgins pci_dev_put(other_pdev); 21347eece5a0SKaren Higgins } 21357eece5a0SKaren Higgins } 21367eece5a0SKaren Higgins 21377eece5a0SKaren Higgins /** 2138afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 2139afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 2140afaf5a2dSDavid Somayajulu **/ 2141afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 2142afaf5a2dSDavid Somayajulu { 2143afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2144afaf5a2dSDavid Somayajulu 2145afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 2146afaf5a2dSDavid Somayajulu 21477eece5a0SKaren Higgins if (!is_qla8022(ha)) 21487eece5a0SKaren Higgins qla4xxx_prevent_other_port_reinit(ha); 2149bee4fe8eSDavid C Somayajulu 2150afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 2151afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 2152afaf5a2dSDavid Somayajulu 2153afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 2154afaf5a2dSDavid Somayajulu 2155afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 2156afaf5a2dSDavid Somayajulu 2157afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 2158afaf5a2dSDavid Somayajulu 21592232be0dSLalit Chandivade pci_disable_pcie_error_reporting(pdev); 2160f4f5df23SVikas Chaudhary pci_disable_device(pdev); 2161afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 2162afaf5a2dSDavid Somayajulu } 2163afaf5a2dSDavid Somayajulu 2164afaf5a2dSDavid Somayajulu /** 2165afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 2166afaf5a2dSDavid Somayajulu * @ha: HA context 2167afaf5a2dSDavid Somayajulu * 2168afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 2169afaf5a2dSDavid Somayajulu * supported addressing method. 2170afaf5a2dSDavid Somayajulu */ 217147975477SAdrian Bunk static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 2172afaf5a2dSDavid Somayajulu { 2173afaf5a2dSDavid Somayajulu int retval; 2174afaf5a2dSDavid Somayajulu 2175afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 21766a35528aSYang Hongyang if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { 21776a35528aSYang Hongyang if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { 2178afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 2179afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 2180afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 2181afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 2182284901a9SYang Hongyang DMA_BIT_MASK(32)); 2183afaf5a2dSDavid Somayajulu } 2184afaf5a2dSDavid Somayajulu } else 2185284901a9SYang Hongyang retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); 2186afaf5a2dSDavid Somayajulu } 2187afaf5a2dSDavid Somayajulu 2188afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 2189afaf5a2dSDavid Somayajulu { 2190afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 2191afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 21928bb4033dSVikas Chaudhary int queue_depth = QL4_DEF_QDEPTH; 2193afaf5a2dSDavid Somayajulu 2194afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 2195afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 21968bb4033dSVikas Chaudhary 21978bb4033dSVikas Chaudhary if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU) 21988bb4033dSVikas Chaudhary queue_depth = ql4xmaxqdepth; 21998bb4033dSVikas Chaudhary 22008bb4033dSVikas Chaudhary scsi_activate_tcq(sdev, queue_depth); 2201afaf5a2dSDavid Somayajulu return 0; 2202afaf5a2dSDavid Somayajulu } 2203afaf5a2dSDavid Somayajulu 2204afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 2205afaf5a2dSDavid Somayajulu { 2206afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 2207afaf5a2dSDavid Somayajulu return 0; 2208afaf5a2dSDavid Somayajulu } 2209afaf5a2dSDavid Somayajulu 2210afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 2211afaf5a2dSDavid Somayajulu { 2212afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 2213afaf5a2dSDavid Somayajulu } 2214afaf5a2dSDavid Somayajulu 2215afaf5a2dSDavid Somayajulu /** 2216afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 2217afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 2218fd589a8fSAnand Gadiyar * @index: index into the active_array 2219afaf5a2dSDavid Somayajulu * 2220afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 2221afaf5a2dSDavid Somayajulu **/ 2222f4f5df23SVikas Chaudhary struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, 2223f4f5df23SVikas Chaudhary uint32_t index) 2224afaf5a2dSDavid Somayajulu { 2225afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 22265369887aSVikas Chaudhary struct scsi_cmnd *cmd = NULL; 2227afaf5a2dSDavid Somayajulu 22285369887aSVikas Chaudhary cmd = scsi_host_find_tag(ha->host, index); 22295369887aSVikas Chaudhary if (!cmd) 2230afaf5a2dSDavid Somayajulu return srb; 2231afaf5a2dSDavid Somayajulu 22325369887aSVikas Chaudhary srb = (struct srb *)CMD_SP(cmd); 22335369887aSVikas Chaudhary if (!srb) 2234afaf5a2dSDavid Somayajulu return srb; 2235afaf5a2dSDavid Somayajulu 2236afaf5a2dSDavid Somayajulu /* update counters */ 2237afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 2238afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 2239afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 2240afaf5a2dSDavid Somayajulu if (srb->cmd) 22415369887aSVikas Chaudhary srb->cmd->host_scribble = 22425369887aSVikas Chaudhary (unsigned char *)(unsigned long) MAX_SRBS; 2243afaf5a2dSDavid Somayajulu } 2244afaf5a2dSDavid Somayajulu return srb; 2245afaf5a2dSDavid Somayajulu } 2246afaf5a2dSDavid Somayajulu 2247afaf5a2dSDavid Somayajulu /** 2248afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 224909a0f719SVikas Chaudhary * @ha: Pointer to host adapter structure. 2250afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 2251afaf5a2dSDavid Somayajulu * 2252afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 2253afaf5a2dSDavid Somayajulu * for some max time. 2254afaf5a2dSDavid Somayajulu **/ 2255afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 2256afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 2257afaf5a2dSDavid Somayajulu { 2258afaf5a2dSDavid Somayajulu int done = 0; 2259afaf5a2dSDavid Somayajulu struct srb *rp; 2260afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 22612232be0dSLalit Chandivade int ret = SUCCESS; 22622232be0dSLalit Chandivade 22632232be0dSLalit Chandivade /* Dont wait on command if PCI error is being handled 22642232be0dSLalit Chandivade * by PCI AER driver 22652232be0dSLalit Chandivade */ 22662232be0dSLalit Chandivade if (unlikely(pci_channel_offline(ha->pdev)) || 22672232be0dSLalit Chandivade (test_bit(AF_EEH_BUSY, &ha->flags))) { 22682232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", 22692232be0dSLalit Chandivade ha->host_no, __func__); 22702232be0dSLalit Chandivade return ret; 22712232be0dSLalit Chandivade } 2272afaf5a2dSDavid Somayajulu 2273afaf5a2dSDavid Somayajulu do { 2274afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 22755369887aSVikas Chaudhary rp = (struct srb *) CMD_SP(cmd); 2276afaf5a2dSDavid Somayajulu if (rp == NULL) { 2277afaf5a2dSDavid Somayajulu done++; 2278afaf5a2dSDavid Somayajulu break; 2279afaf5a2dSDavid Somayajulu } 2280afaf5a2dSDavid Somayajulu 2281afaf5a2dSDavid Somayajulu msleep(2000); 2282afaf5a2dSDavid Somayajulu } while (max_wait_time--); 2283afaf5a2dSDavid Somayajulu 2284afaf5a2dSDavid Somayajulu return done; 2285afaf5a2dSDavid Somayajulu } 2286afaf5a2dSDavid Somayajulu 2287afaf5a2dSDavid Somayajulu /** 2288afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 2289afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 2290afaf5a2dSDavid Somayajulu **/ 2291afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 2292afaf5a2dSDavid Somayajulu { 2293afaf5a2dSDavid Somayajulu unsigned long wait_online; 2294afaf5a2dSDavid Somayajulu 2295f581a3f7SVikas Chaudhary wait_online = jiffies + (HBA_ONLINE_TOV * HZ); 2296afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 2297afaf5a2dSDavid Somayajulu 2298afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 2299afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 2300afaf5a2dSDavid Somayajulu 2301afaf5a2dSDavid Somayajulu msleep(2000); 2302afaf5a2dSDavid Somayajulu } 2303afaf5a2dSDavid Somayajulu 2304afaf5a2dSDavid Somayajulu return QLA_ERROR; 2305afaf5a2dSDavid Somayajulu } 2306afaf5a2dSDavid Somayajulu 2307afaf5a2dSDavid Somayajulu /** 2308ce545039SMike Christie * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. 2309fd589a8fSAnand Gadiyar * @ha: pointer to HBA 2310afaf5a2dSDavid Somayajulu * @t: target id 2311afaf5a2dSDavid Somayajulu * @l: lun id 2312afaf5a2dSDavid Somayajulu * 2313afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 2314afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 2315afaf5a2dSDavid Somayajulu **/ 2316ce545039SMike Christie static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, 2317ce545039SMike Christie struct scsi_target *stgt, 2318ce545039SMike Christie struct scsi_device *sdev) 2319afaf5a2dSDavid Somayajulu { 2320afaf5a2dSDavid Somayajulu int cnt; 2321afaf5a2dSDavid Somayajulu int status = 0; 2322afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 2323afaf5a2dSDavid Somayajulu 2324afaf5a2dSDavid Somayajulu /* 2325ce545039SMike Christie * Waiting for all commands for the designated target or dev 2326ce545039SMike Christie * in the active array 2327afaf5a2dSDavid Somayajulu */ 2328afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 2329afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 2330ce545039SMike Christie if (cmd && stgt == scsi_target(cmd->device) && 2331ce545039SMike Christie (!sdev || sdev == cmd->device)) { 2332afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 2333afaf5a2dSDavid Somayajulu status++; 2334afaf5a2dSDavid Somayajulu break; 2335afaf5a2dSDavid Somayajulu } 2336afaf5a2dSDavid Somayajulu } 2337afaf5a2dSDavid Somayajulu } 2338afaf5a2dSDavid Somayajulu return status; 2339afaf5a2dSDavid Somayajulu } 2340afaf5a2dSDavid Somayajulu 2341afaf5a2dSDavid Somayajulu /** 234209a0f719SVikas Chaudhary * qla4xxx_eh_abort - callback for abort task. 234309a0f719SVikas Chaudhary * @cmd: Pointer to Linux's SCSI command structure 234409a0f719SVikas Chaudhary * 234509a0f719SVikas Chaudhary * This routine is called by the Linux OS to abort the specified 234609a0f719SVikas Chaudhary * command. 234709a0f719SVikas Chaudhary **/ 234809a0f719SVikas Chaudhary static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) 234909a0f719SVikas Chaudhary { 235009a0f719SVikas Chaudhary struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 235109a0f719SVikas Chaudhary unsigned int id = cmd->device->id; 235209a0f719SVikas Chaudhary unsigned int lun = cmd->device->lun; 235392b3e5bbSMike Christie unsigned long flags; 235409a0f719SVikas Chaudhary struct srb *srb = NULL; 235509a0f719SVikas Chaudhary int ret = SUCCESS; 235609a0f719SVikas Chaudhary int wait = 0; 235709a0f719SVikas Chaudhary 2358c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 23595cd049a5SChristoph Hellwig "scsi%ld:%d:%d: Abort command issued cmd=%p\n", 23605cd049a5SChristoph Hellwig ha->host_no, id, lun, cmd); 236109a0f719SVikas Chaudhary 236292b3e5bbSMike Christie spin_lock_irqsave(&ha->hardware_lock, flags); 236309a0f719SVikas Chaudhary srb = (struct srb *) CMD_SP(cmd); 236492b3e5bbSMike Christie if (!srb) { 236592b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 236609a0f719SVikas Chaudhary return SUCCESS; 236792b3e5bbSMike Christie } 236809a0f719SVikas Chaudhary kref_get(&srb->srb_ref); 236992b3e5bbSMike Christie spin_unlock_irqrestore(&ha->hardware_lock, flags); 237009a0f719SVikas Chaudhary 237109a0f719SVikas Chaudhary if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { 237209a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", 237309a0f719SVikas Chaudhary ha->host_no, id, lun)); 237409a0f719SVikas Chaudhary ret = FAILED; 237509a0f719SVikas Chaudhary } else { 237609a0f719SVikas Chaudhary DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", 237709a0f719SVikas Chaudhary ha->host_no, id, lun)); 237809a0f719SVikas Chaudhary wait = 1; 237909a0f719SVikas Chaudhary } 238009a0f719SVikas Chaudhary 238109a0f719SVikas Chaudhary kref_put(&srb->srb_ref, qla4xxx_srb_compl); 238209a0f719SVikas Chaudhary 238309a0f719SVikas Chaudhary /* Wait for command to complete */ 238409a0f719SVikas Chaudhary if (wait) { 238509a0f719SVikas Chaudhary if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 238609a0f719SVikas Chaudhary DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", 238709a0f719SVikas Chaudhary ha->host_no, id, lun)); 238809a0f719SVikas Chaudhary ret = FAILED; 238909a0f719SVikas Chaudhary } 239009a0f719SVikas Chaudhary } 239109a0f719SVikas Chaudhary 2392c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 239309a0f719SVikas Chaudhary "scsi%ld:%d:%d: Abort command - %s\n", 239425985edcSLucas De Marchi ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed"); 239509a0f719SVikas Chaudhary 239609a0f719SVikas Chaudhary return ret; 239709a0f719SVikas Chaudhary } 239809a0f719SVikas Chaudhary 239909a0f719SVikas Chaudhary /** 2400afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 2401afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2402afaf5a2dSDavid Somayajulu * 2403afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 2404afaf5a2dSDavid Somayajulu * specified target. 2405afaf5a2dSDavid Somayajulu **/ 2406afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 2407afaf5a2dSDavid Somayajulu { 2408afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2409afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 2410afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 2411afaf5a2dSDavid Somayajulu 2412612f7348SKaren Higgins if (!ddb_entry) 2413afaf5a2dSDavid Somayajulu return ret; 2414afaf5a2dSDavid Somayajulu 2415c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2416c01be6dcSMike Christie if (ret) 2417c01be6dcSMike Christie return ret; 2418c01be6dcSMike Christie ret = FAILED; 2419c01be6dcSMike Christie 2420c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2421afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 2422afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2423afaf5a2dSDavid Somayajulu 2424afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 2425afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 2426afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 2427242f9dcbSJens Axboe cmd, jiffies, cmd->request->timeout / HZ, 2428afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 2429afaf5a2dSDavid Somayajulu 2430afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 2431afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 2432afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 2433c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); 2434afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2435afaf5a2dSDavid Somayajulu } 2436afaf5a2dSDavid Somayajulu 2437ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2438ce545039SMike Christie cmd->device)) { 2439c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2440afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 2441afaf5a2dSDavid Somayajulu "commands.\n"); 2442afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 2443afaf5a2dSDavid Somayajulu } 2444afaf5a2dSDavid Somayajulu 24459d562913SDavid C Somayajulu /* Send marker. */ 24469d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 24479d562913SDavid C Somayajulu MM_LUN_RESET) != QLA_SUCCESS) 24489d562913SDavid C Somayajulu goto eh_dev_reset_done; 24499d562913SDavid C Somayajulu 2450c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2451afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 2452afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 2453afaf5a2dSDavid Somayajulu cmd->device->lun); 2454afaf5a2dSDavid Somayajulu 2455afaf5a2dSDavid Somayajulu ret = SUCCESS; 2456afaf5a2dSDavid Somayajulu 2457afaf5a2dSDavid Somayajulu eh_dev_reset_done: 2458afaf5a2dSDavid Somayajulu 2459afaf5a2dSDavid Somayajulu return ret; 2460afaf5a2dSDavid Somayajulu } 2461afaf5a2dSDavid Somayajulu 2462afaf5a2dSDavid Somayajulu /** 2463ce545039SMike Christie * qla4xxx_eh_target_reset - callback for target reset. 2464ce545039SMike Christie * @cmd: Pointer to Linux's SCSI command structure 2465ce545039SMike Christie * 2466ce545039SMike Christie * This routine is called by the Linux OS to reset the target. 2467ce545039SMike Christie **/ 2468ce545039SMike Christie static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) 2469ce545039SMike Christie { 2470ce545039SMike Christie struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 2471ce545039SMike Christie struct ddb_entry *ddb_entry = cmd->device->hostdata; 2472c01be6dcSMike Christie int stat, ret; 2473ce545039SMike Christie 2474ce545039SMike Christie if (!ddb_entry) 2475ce545039SMike Christie return FAILED; 2476ce545039SMike Christie 2477c01be6dcSMike Christie ret = iscsi_block_scsi_eh(cmd); 2478c01be6dcSMike Christie if (ret) 2479c01be6dcSMike Christie return ret; 2480c01be6dcSMike Christie 2481ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2482ce545039SMike Christie "WARM TARGET RESET ISSUED.\n"); 2483ce545039SMike Christie 2484ce545039SMike Christie DEBUG2(printk(KERN_INFO 2485ce545039SMike Christie "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " 2486ce545039SMike Christie "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", 2487242f9dcbSJens Axboe ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, 2488ce545039SMike Christie ha->dpc_flags, cmd->result, cmd->allowed)); 2489ce545039SMike Christie 2490ce545039SMike Christie stat = qla4xxx_reset_target(ha, ddb_entry); 2491ce545039SMike Christie if (stat != QLA_SUCCESS) { 2492ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2493ce545039SMike Christie "WARM TARGET RESET FAILED.\n"); 2494ce545039SMike Christie return FAILED; 2495ce545039SMike Christie } 2496ce545039SMike Christie 2497ce545039SMike Christie if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), 2498ce545039SMike Christie NULL)) { 2499ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2500ce545039SMike Christie "WARM TARGET DEVICE RESET FAILED - " 2501ce545039SMike Christie "waiting for commands.\n"); 2502ce545039SMike Christie return FAILED; 2503ce545039SMike Christie } 2504ce545039SMike Christie 25059d562913SDavid C Somayajulu /* Send marker. */ 25069d562913SDavid C Somayajulu if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, 25079d562913SDavid C Somayajulu MM_TGT_WARM_RESET) != QLA_SUCCESS) { 25089d562913SDavid C Somayajulu starget_printk(KERN_INFO, scsi_target(cmd->device), 25099d562913SDavid C Somayajulu "WARM TARGET DEVICE RESET FAILED - " 25109d562913SDavid C Somayajulu "marker iocb failed.\n"); 25119d562913SDavid C Somayajulu return FAILED; 25129d562913SDavid C Somayajulu } 25139d562913SDavid C Somayajulu 2514ce545039SMike Christie starget_printk(KERN_INFO, scsi_target(cmd->device), 2515ce545039SMike Christie "WARM TARGET RESET SUCCEEDED.\n"); 2516ce545039SMike Christie return SUCCESS; 2517ce545039SMike Christie } 2518ce545039SMike Christie 2519ce545039SMike Christie /** 2520afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 2521afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 2522afaf5a2dSDavid Somayajulu * 2523afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 2524afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 2525afaf5a2dSDavid Somayajulu **/ 2526afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 2527afaf5a2dSDavid Somayajulu { 2528afaf5a2dSDavid Somayajulu int return_status = FAILED; 2529afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 2530afaf5a2dSDavid Somayajulu 2531afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 2532afaf5a2dSDavid Somayajulu 2533f4f5df23SVikas Chaudhary if (ql4xdontresethba) { 2534f4f5df23SVikas Chaudhary DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", 2535f4f5df23SVikas Chaudhary ha->host_no, __func__)); 2536f4f5df23SVikas Chaudhary return FAILED; 2537f4f5df23SVikas Chaudhary } 2538f4f5df23SVikas Chaudhary 2539c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, 2540dca05c4cSKaren Higgins "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, 2541afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 2542afaf5a2dSDavid Somayajulu 2543afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 2544afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 2545afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 2546afaf5a2dSDavid Somayajulu __func__)); 2547afaf5a2dSDavid Somayajulu 2548afaf5a2dSDavid Somayajulu return FAILED; 2549afaf5a2dSDavid Somayajulu } 2550afaf5a2dSDavid Somayajulu 2551f4f5df23SVikas Chaudhary if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 2552f4f5df23SVikas Chaudhary if (is_qla8022(ha)) 2553f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); 2554f4f5df23SVikas Chaudhary else 2555f4f5df23SVikas Chaudhary set_bit(DPC_RESET_HA, &ha->dpc_flags); 2556f4f5df23SVikas Chaudhary } 255750a29aecSMike Christie 2558f4f5df23SVikas Chaudhary if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) 2559afaf5a2dSDavid Somayajulu return_status = SUCCESS; 2560afaf5a2dSDavid Somayajulu 2561c2660df3SVikas Chaudhary ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", 256225985edcSLucas De Marchi return_status == FAILED ? "FAILED" : "SUCCEEDED"); 2563afaf5a2dSDavid Somayajulu 2564afaf5a2dSDavid Somayajulu return return_status; 2565afaf5a2dSDavid Somayajulu } 2566afaf5a2dSDavid Somayajulu 25672232be0dSLalit Chandivade /* PCI AER driver recovers from all correctable errors w/o 25682232be0dSLalit Chandivade * driver intervention. For uncorrectable errors PCI AER 25692232be0dSLalit Chandivade * driver calls the following device driver's callbacks 25702232be0dSLalit Chandivade * 25712232be0dSLalit Chandivade * - Fatal Errors - link_reset 25722232be0dSLalit Chandivade * - Non-Fatal Errors - driver's pci_error_detected() which 25732232be0dSLalit Chandivade * returns CAN_RECOVER, NEED_RESET or DISCONNECT. 25742232be0dSLalit Chandivade * 25752232be0dSLalit Chandivade * PCI AER driver calls 25762232be0dSLalit Chandivade * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled 25772232be0dSLalit Chandivade * returns RECOVERED or NEED_RESET if fw_hung 25782232be0dSLalit Chandivade * NEED_RESET - driver's slot_reset() 25792232be0dSLalit Chandivade * DISCONNECT - device is dead & cannot recover 25802232be0dSLalit Chandivade * RECOVERED - driver's pci_resume() 25812232be0dSLalit Chandivade */ 25822232be0dSLalit Chandivade static pci_ers_result_t 25832232be0dSLalit Chandivade qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 25842232be0dSLalit Chandivade { 25852232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 25862232be0dSLalit Chandivade 25872232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", 25882232be0dSLalit Chandivade ha->host_no, __func__, state); 25892232be0dSLalit Chandivade 25902232be0dSLalit Chandivade if (!is_aer_supported(ha)) 25912232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 25922232be0dSLalit Chandivade 25932232be0dSLalit Chandivade switch (state) { 25942232be0dSLalit Chandivade case pci_channel_io_normal: 25952232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 25962232be0dSLalit Chandivade return PCI_ERS_RESULT_CAN_RECOVER; 25972232be0dSLalit Chandivade case pci_channel_io_frozen: 25982232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 25992232be0dSLalit Chandivade qla4xxx_mailbox_premature_completion(ha); 26002232be0dSLalit Chandivade qla4xxx_free_irqs(ha); 26012232be0dSLalit Chandivade pci_disable_device(pdev); 26027b3595dfSVikas Chaudhary /* Return back all IOs */ 26037b3595dfSVikas Chaudhary qla4xxx_abort_active_cmds(ha, DID_RESET << 16); 26042232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 26052232be0dSLalit Chandivade case pci_channel_io_perm_failure: 26062232be0dSLalit Chandivade set_bit(AF_EEH_BUSY, &ha->flags); 26072232be0dSLalit Chandivade set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); 26082232be0dSLalit Chandivade qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); 26092232be0dSLalit Chandivade return PCI_ERS_RESULT_DISCONNECT; 26102232be0dSLalit Chandivade } 26112232be0dSLalit Chandivade return PCI_ERS_RESULT_NEED_RESET; 26122232be0dSLalit Chandivade } 26132232be0dSLalit Chandivade 26142232be0dSLalit Chandivade /** 26152232be0dSLalit Chandivade * qla4xxx_pci_mmio_enabled() gets called if 26162232be0dSLalit Chandivade * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER 26172232be0dSLalit Chandivade * and read/write to the device still works. 26182232be0dSLalit Chandivade **/ 26192232be0dSLalit Chandivade static pci_ers_result_t 26202232be0dSLalit Chandivade qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) 26212232be0dSLalit Chandivade { 26222232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 26232232be0dSLalit Chandivade 26242232be0dSLalit Chandivade if (!is_aer_supported(ha)) 26252232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 26262232be0dSLalit Chandivade 26272232be0dSLalit Chandivade return PCI_ERS_RESULT_RECOVERED; 26282232be0dSLalit Chandivade } 26292232be0dSLalit Chandivade 26307b3595dfSVikas Chaudhary static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) 26312232be0dSLalit Chandivade { 26322232be0dSLalit Chandivade uint32_t rval = QLA_ERROR; 26337b3595dfSVikas Chaudhary uint32_t ret = 0; 26342232be0dSLalit Chandivade int fn; 26352232be0dSLalit Chandivade struct pci_dev *other_pdev = NULL; 26362232be0dSLalit Chandivade 26372232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); 26382232be0dSLalit Chandivade 26392232be0dSLalit Chandivade set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 26402232be0dSLalit Chandivade 26412232be0dSLalit Chandivade if (test_bit(AF_ONLINE, &ha->flags)) { 26422232be0dSLalit Chandivade clear_bit(AF_ONLINE, &ha->flags); 26432232be0dSLalit Chandivade qla4xxx_mark_all_devices_missing(ha); 26442232be0dSLalit Chandivade qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 26452232be0dSLalit Chandivade } 26462232be0dSLalit Chandivade 26472232be0dSLalit Chandivade fn = PCI_FUNC(ha->pdev->devfn); 26482232be0dSLalit Chandivade while (fn > 0) { 26492232be0dSLalit Chandivade fn--; 26502232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " 26512232be0dSLalit Chandivade "func %x\n", ha->host_no, __func__, fn); 26522232be0dSLalit Chandivade /* Get the pci device given the domain, bus, 26532232be0dSLalit Chandivade * slot/function number */ 26542232be0dSLalit Chandivade other_pdev = 26552232be0dSLalit Chandivade pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), 26562232be0dSLalit Chandivade ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), 26572232be0dSLalit Chandivade fn)); 26582232be0dSLalit Chandivade 26592232be0dSLalit Chandivade if (!other_pdev) 26602232be0dSLalit Chandivade continue; 26612232be0dSLalit Chandivade 26622232be0dSLalit Chandivade if (atomic_read(&other_pdev->enable_cnt)) { 26632232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " 26642232be0dSLalit Chandivade "func in enabled state%x\n", ha->host_no, 26652232be0dSLalit Chandivade __func__, fn); 26662232be0dSLalit Chandivade pci_dev_put(other_pdev); 26672232be0dSLalit Chandivade break; 26682232be0dSLalit Chandivade } 26692232be0dSLalit Chandivade pci_dev_put(other_pdev); 26702232be0dSLalit Chandivade } 26712232be0dSLalit Chandivade 26722232be0dSLalit Chandivade /* The first function on the card, the reset owner will 26732232be0dSLalit Chandivade * start & initialize the firmware. The other functions 26742232be0dSLalit Chandivade * on the card will reset the firmware context 26752232be0dSLalit Chandivade */ 26762232be0dSLalit Chandivade if (!fn) { 26772232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " 26782232be0dSLalit Chandivade "0x%x is the owner\n", ha->host_no, __func__, 26792232be0dSLalit Chandivade ha->pdev->devfn); 26802232be0dSLalit Chandivade 26812232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 26822232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 26832232be0dSLalit Chandivade QLA82XX_DEV_COLD); 26842232be0dSLalit Chandivade 26852232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, 26862232be0dSLalit Chandivade QLA82XX_IDC_VERSION); 26872232be0dSLalit Chandivade 26882232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 26892232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 26902232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); 26912232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 26922232be0dSLalit Chandivade 26932232be0dSLalit Chandivade if (rval != QLA_SUCCESS) { 26942232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 26952232be0dSLalit Chandivade "FAILED\n", ha->host_no, __func__); 26962232be0dSLalit Chandivade qla4_8xxx_clear_drv_active(ha); 26972232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 26982232be0dSLalit Chandivade QLA82XX_DEV_FAILED); 26992232be0dSLalit Chandivade } else { 27002232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " 27012232be0dSLalit Chandivade "READY\n", ha->host_no, __func__); 27022232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, 27032232be0dSLalit Chandivade QLA82XX_DEV_READY); 27042232be0dSLalit Chandivade /* Clear driver state register */ 27052232be0dSLalit Chandivade qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); 27062232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 27077b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 27087b3595dfSVikas Chaudhary if (ret) { 27097b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to " 27107b3595dfSVikas Chaudhary "reserve interrupt %d already in use.\n", 27117b3595dfSVikas Chaudhary ha->pdev->irq); 27127b3595dfSVikas Chaudhary rval = QLA_ERROR; 27137b3595dfSVikas Chaudhary } else { 27142232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 27157b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 27167b3595dfSVikas Chaudhary } 27172232be0dSLalit Chandivade } 27182232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 27192232be0dSLalit Chandivade } else { 27202232be0dSLalit Chandivade ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " 27212232be0dSLalit Chandivade "the reset owner\n", ha->host_no, __func__, 27222232be0dSLalit Chandivade ha->pdev->devfn); 27232232be0dSLalit Chandivade if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == 27242232be0dSLalit Chandivade QLA82XX_DEV_READY)) { 27252232be0dSLalit Chandivade clear_bit(AF_FW_RECOVERY, &ha->flags); 27262232be0dSLalit Chandivade rval = qla4xxx_initialize_adapter(ha, 27272232be0dSLalit Chandivade PRESERVE_DDB_LIST); 27287b3595dfSVikas Chaudhary if (rval == QLA_SUCCESS) { 27297b3595dfSVikas Chaudhary ret = qla4xxx_request_irqs(ha); 27307b3595dfSVikas Chaudhary if (ret) { 27317b3595dfSVikas Chaudhary ql4_printk(KERN_WARNING, ha, "Failed to" 27327b3595dfSVikas Chaudhary " reserve interrupt %d already in" 27337b3595dfSVikas Chaudhary " use.\n", ha->pdev->irq); 27347b3595dfSVikas Chaudhary rval = QLA_ERROR; 27357b3595dfSVikas Chaudhary } else { 27362232be0dSLalit Chandivade ha->isp_ops->enable_intrs(ha); 27377b3595dfSVikas Chaudhary rval = QLA_SUCCESS; 27387b3595dfSVikas Chaudhary } 27397b3595dfSVikas Chaudhary } 27402232be0dSLalit Chandivade qla4_8xxx_idc_lock(ha); 27412232be0dSLalit Chandivade qla4_8xxx_set_drv_active(ha); 27422232be0dSLalit Chandivade qla4_8xxx_idc_unlock(ha); 27432232be0dSLalit Chandivade } 27442232be0dSLalit Chandivade } 27452232be0dSLalit Chandivade clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); 27462232be0dSLalit Chandivade return rval; 27472232be0dSLalit Chandivade } 27482232be0dSLalit Chandivade 27492232be0dSLalit Chandivade static pci_ers_result_t 27502232be0dSLalit Chandivade qla4xxx_pci_slot_reset(struct pci_dev *pdev) 27512232be0dSLalit Chandivade { 27522232be0dSLalit Chandivade pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; 27532232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 27542232be0dSLalit Chandivade int rc; 27552232be0dSLalit Chandivade 27562232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", 27572232be0dSLalit Chandivade ha->host_no, __func__); 27582232be0dSLalit Chandivade 27592232be0dSLalit Chandivade if (!is_aer_supported(ha)) 27602232be0dSLalit Chandivade return PCI_ERS_RESULT_NONE; 27612232be0dSLalit Chandivade 27622232be0dSLalit Chandivade /* Restore the saved state of PCIe device - 27632232be0dSLalit Chandivade * BAR registers, PCI Config space, PCIX, MSI, 27642232be0dSLalit Chandivade * IOV states 27652232be0dSLalit Chandivade */ 27662232be0dSLalit Chandivade pci_restore_state(pdev); 27672232be0dSLalit Chandivade 27682232be0dSLalit Chandivade /* pci_restore_state() clears the saved_state flag of the device 27692232be0dSLalit Chandivade * save restored state which resets saved_state flag 27702232be0dSLalit Chandivade */ 27712232be0dSLalit Chandivade pci_save_state(pdev); 27722232be0dSLalit Chandivade 27732232be0dSLalit Chandivade /* Initialize device or resume if in suspended state */ 27742232be0dSLalit Chandivade rc = pci_enable_device(pdev); 27752232be0dSLalit Chandivade if (rc) { 277625985edcSLucas De Marchi ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable " 27772232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__); 27782232be0dSLalit Chandivade goto exit_slot_reset; 27792232be0dSLalit Chandivade } 27802232be0dSLalit Chandivade 27817b3595dfSVikas Chaudhary ha->isp_ops->disable_intrs(ha); 27822232be0dSLalit Chandivade 27832232be0dSLalit Chandivade if (is_qla8022(ha)) { 27842232be0dSLalit Chandivade if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { 27852232be0dSLalit Chandivade ret = PCI_ERS_RESULT_RECOVERED; 27862232be0dSLalit Chandivade goto exit_slot_reset; 27872232be0dSLalit Chandivade } else 27882232be0dSLalit Chandivade goto exit_slot_reset; 27892232be0dSLalit Chandivade } 27902232be0dSLalit Chandivade 27912232be0dSLalit Chandivade exit_slot_reset: 27922232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" 27932232be0dSLalit Chandivade "device after reset\n", ha->host_no, __func__, ret); 27942232be0dSLalit Chandivade return ret; 27952232be0dSLalit Chandivade } 27962232be0dSLalit Chandivade 27972232be0dSLalit Chandivade static void 27982232be0dSLalit Chandivade qla4xxx_pci_resume(struct pci_dev *pdev) 27992232be0dSLalit Chandivade { 28002232be0dSLalit Chandivade struct scsi_qla_host *ha = pci_get_drvdata(pdev); 28012232be0dSLalit Chandivade int ret; 28022232be0dSLalit Chandivade 28032232be0dSLalit Chandivade ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", 28042232be0dSLalit Chandivade ha->host_no, __func__); 28052232be0dSLalit Chandivade 28062232be0dSLalit Chandivade ret = qla4xxx_wait_for_hba_online(ha); 28072232be0dSLalit Chandivade if (ret != QLA_SUCCESS) { 28082232be0dSLalit Chandivade ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " 28092232be0dSLalit Chandivade "resume I/O from slot/link_reset\n", ha->host_no, 28102232be0dSLalit Chandivade __func__); 28112232be0dSLalit Chandivade } 28122232be0dSLalit Chandivade 28132232be0dSLalit Chandivade pci_cleanup_aer_uncorrect_error_status(pdev); 28142232be0dSLalit Chandivade clear_bit(AF_EEH_BUSY, &ha->flags); 28152232be0dSLalit Chandivade } 28162232be0dSLalit Chandivade 28172232be0dSLalit Chandivade static struct pci_error_handlers qla4xxx_err_handler = { 28182232be0dSLalit Chandivade .error_detected = qla4xxx_pci_error_detected, 28192232be0dSLalit Chandivade .mmio_enabled = qla4xxx_pci_mmio_enabled, 28202232be0dSLalit Chandivade .slot_reset = qla4xxx_pci_slot_reset, 28212232be0dSLalit Chandivade .resume = qla4xxx_pci_resume, 28222232be0dSLalit Chandivade }; 28232232be0dSLalit Chandivade 2824afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 2825afaf5a2dSDavid Somayajulu { 2826afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2827afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 2828afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2829afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2830afaf5a2dSDavid Somayajulu }, 2831afaf5a2dSDavid Somayajulu { 2832afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2833afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 2834afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 2835afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 2836afaf5a2dSDavid Somayajulu }, 2837d915058fSDavid C Somayajulu { 2838d915058fSDavid C Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 2839d915058fSDavid C Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4032, 2840d915058fSDavid C Somayajulu .subvendor = PCI_ANY_ID, 2841d915058fSDavid C Somayajulu .subdevice = PCI_ANY_ID, 2842d915058fSDavid C Somayajulu }, 2843f4f5df23SVikas Chaudhary { 2844f4f5df23SVikas Chaudhary .vendor = PCI_VENDOR_ID_QLOGIC, 2845f4f5df23SVikas Chaudhary .device = PCI_DEVICE_ID_QLOGIC_ISP8022, 2846f4f5df23SVikas Chaudhary .subvendor = PCI_ANY_ID, 2847f4f5df23SVikas Chaudhary .subdevice = PCI_ANY_ID, 2848f4f5df23SVikas Chaudhary }, 2849afaf5a2dSDavid Somayajulu {0, 0}, 2850afaf5a2dSDavid Somayajulu }; 2851afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 2852afaf5a2dSDavid Somayajulu 285347975477SAdrian Bunk static struct pci_driver qla4xxx_pci_driver = { 2854afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 2855afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 2856afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 2857afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 28582232be0dSLalit Chandivade .err_handler = &qla4xxx_err_handler, 2859afaf5a2dSDavid Somayajulu }; 2860afaf5a2dSDavid Somayajulu 2861afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 2862afaf5a2dSDavid Somayajulu { 2863afaf5a2dSDavid Somayajulu int ret; 2864afaf5a2dSDavid Somayajulu 2865afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 2866afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 286720c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, NULL); 2868afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 2869afaf5a2dSDavid Somayajulu printk(KERN_ERR 2870afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 2871afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 2872afaf5a2dSDavid Somayajulu ret = -ENOMEM; 2873afaf5a2dSDavid Somayajulu goto no_srp_cache; 2874afaf5a2dSDavid Somayajulu } 2875afaf5a2dSDavid Somayajulu 2876afaf5a2dSDavid Somayajulu /* Derive version string. */ 2877afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 287811010fecSAndrew Vasquez if (ql4xextended_error_logging) 2879afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 2880afaf5a2dSDavid Somayajulu 2881afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 2882afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 2883afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 2884afaf5a2dSDavid Somayajulu ret = -ENODEV; 2885afaf5a2dSDavid Somayajulu goto release_srb_cache; 2886afaf5a2dSDavid Somayajulu } 2887afaf5a2dSDavid Somayajulu 2888afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 2889afaf5a2dSDavid Somayajulu if (ret) 2890afaf5a2dSDavid Somayajulu goto unregister_transport; 2891afaf5a2dSDavid Somayajulu 2892afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 2893afaf5a2dSDavid Somayajulu return 0; 28945ae16db3SDoug Maxey 2895afaf5a2dSDavid Somayajulu unregister_transport: 2896afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2897afaf5a2dSDavid Somayajulu release_srb_cache: 2898afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2899afaf5a2dSDavid Somayajulu no_srp_cache: 2900afaf5a2dSDavid Somayajulu return ret; 2901afaf5a2dSDavid Somayajulu } 2902afaf5a2dSDavid Somayajulu 2903afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 2904afaf5a2dSDavid Somayajulu { 2905afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 2906afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 2907afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 2908afaf5a2dSDavid Somayajulu } 2909afaf5a2dSDavid Somayajulu 2910afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 2911afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 2912afaf5a2dSDavid Somayajulu 2913afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 2914afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 2915afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 2916afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 2917