1afaf5a2dSDavid Somayajulu /* 2afaf5a2dSDavid Somayajulu * QLogic iSCSI HBA Driver 3afaf5a2dSDavid Somayajulu * Copyright (c) 2003-2006 QLogic Corporation 4afaf5a2dSDavid Somayajulu * 5afaf5a2dSDavid Somayajulu * See LICENSE.qla4xxx for copyright and licensing details. 6afaf5a2dSDavid Somayajulu */ 7afaf5a2dSDavid Somayajulu #include <linux/moduleparam.h> 8afaf5a2dSDavid Somayajulu 9afaf5a2dSDavid Somayajulu #include <scsi/scsi_tcq.h> 10afaf5a2dSDavid Somayajulu #include <scsi/scsicam.h> 11afaf5a2dSDavid Somayajulu 12afaf5a2dSDavid Somayajulu #include "ql4_def.h" 13afaf5a2dSDavid Somayajulu 14afaf5a2dSDavid Somayajulu /* 15afaf5a2dSDavid Somayajulu * Driver version 16afaf5a2dSDavid Somayajulu */ 17afaf5a2dSDavid Somayajulu char qla4xxx_version_str[40]; 18afaf5a2dSDavid Somayajulu 19afaf5a2dSDavid Somayajulu /* 20afaf5a2dSDavid Somayajulu * SRB allocation cache 21afaf5a2dSDavid Somayajulu */ 22afaf5a2dSDavid Somayajulu static kmem_cache_t *srb_cachep; 23afaf5a2dSDavid Somayajulu 24afaf5a2dSDavid Somayajulu /* 25afaf5a2dSDavid Somayajulu * Module parameter information and variables 26afaf5a2dSDavid Somayajulu */ 27afaf5a2dSDavid Somayajulu int ql4xdiscoverywait = 60; 28afaf5a2dSDavid Somayajulu module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR); 29afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); 30afaf5a2dSDavid Somayajulu int ql4xdontresethba = 0; 31afaf5a2dSDavid Somayajulu module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR); 32afaf5a2dSDavid Somayajulu MODULE_PARM_DESC(ql4xdontresethba, 33afaf5a2dSDavid Somayajulu "Dont reset the HBA when the driver gets 0x8002 AEN " 34afaf5a2dSDavid Somayajulu " default it will reset hba :0" 35afaf5a2dSDavid Somayajulu " set to 1 to avoid resetting HBA"); 36afaf5a2dSDavid Somayajulu 37d7a297baSFrederik Deweerdt int qla4_extended_error_logging = 0; /* 0 = off, 1 = log errors */ 38d7a297baSFrederik Deweerdt module_param(qla4_extended_error_logging, int, S_IRUGO | S_IRUSR); 39d7a297baSFrederik Deweerdt MODULE_PARM_DESC(qla4_extended_error_logging, 40afaf5a2dSDavid Somayajulu "Option to enable extended error logging, " 41afaf5a2dSDavid Somayajulu "Default is 0 - no logging, 1 - debug logging"); 42afaf5a2dSDavid Somayajulu 43afaf5a2dSDavid Somayajulu /* 44afaf5a2dSDavid Somayajulu * SCSI host template entry points 45afaf5a2dSDavid Somayajulu */ 46afaf5a2dSDavid Somayajulu 47afaf5a2dSDavid Somayajulu void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); 48afaf5a2dSDavid Somayajulu 49afaf5a2dSDavid Somayajulu /* 50afaf5a2dSDavid Somayajulu * iSCSI template entry points 51afaf5a2dSDavid Somayajulu */ 52afaf5a2dSDavid Somayajulu static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no, 53afaf5a2dSDavid Somayajulu uint32_t enable, struct sockaddr *dst_addr); 54afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 55afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 56afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 57afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf); 58afaf5a2dSDavid Somayajulu static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag); 59afaf5a2dSDavid Somayajulu static int qla4xxx_conn_start(struct iscsi_cls_conn *conn); 60afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); 61afaf5a2dSDavid Somayajulu 62afaf5a2dSDavid Somayajulu /* 63afaf5a2dSDavid Somayajulu * SCSI host template entry points 64afaf5a2dSDavid Somayajulu */ 65afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 66afaf5a2dSDavid Somayajulu void (*done) (struct scsi_cmnd *)); 67afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); 68afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); 69afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *device); 70afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *device); 71afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev); 72afaf5a2dSDavid Somayajulu 73afaf5a2dSDavid Somayajulu static struct scsi_host_template qla4xxx_driver_template = { 74afaf5a2dSDavid Somayajulu .module = THIS_MODULE, 75afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 76afaf5a2dSDavid Somayajulu .proc_name = DRIVER_NAME, 77afaf5a2dSDavid Somayajulu .queuecommand = qla4xxx_queuecommand, 78afaf5a2dSDavid Somayajulu 79afaf5a2dSDavid Somayajulu .eh_device_reset_handler = qla4xxx_eh_device_reset, 80afaf5a2dSDavid Somayajulu .eh_host_reset_handler = qla4xxx_eh_host_reset, 81afaf5a2dSDavid Somayajulu 82afaf5a2dSDavid Somayajulu .slave_configure = qla4xxx_slave_configure, 83afaf5a2dSDavid Somayajulu .slave_alloc = qla4xxx_slave_alloc, 84afaf5a2dSDavid Somayajulu .slave_destroy = qla4xxx_slave_destroy, 85afaf5a2dSDavid Somayajulu 86afaf5a2dSDavid Somayajulu .this_id = -1, 87afaf5a2dSDavid Somayajulu .cmd_per_lun = 3, 88afaf5a2dSDavid Somayajulu .use_clustering = ENABLE_CLUSTERING, 89afaf5a2dSDavid Somayajulu .sg_tablesize = SG_ALL, 90afaf5a2dSDavid Somayajulu 91afaf5a2dSDavid Somayajulu .max_sectors = 0xFFFF, 92afaf5a2dSDavid Somayajulu }; 93afaf5a2dSDavid Somayajulu 94afaf5a2dSDavid Somayajulu static struct iscsi_transport qla4xxx_iscsi_transport = { 95afaf5a2dSDavid Somayajulu .owner = THIS_MODULE, 96afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 97afaf5a2dSDavid Somayajulu .param_mask = ISCSI_CONN_PORT | 98afaf5a2dSDavid Somayajulu ISCSI_CONN_ADDRESS | 99afaf5a2dSDavid Somayajulu ISCSI_TARGET_NAME | 100afaf5a2dSDavid Somayajulu ISCSI_TPGT, 101afaf5a2dSDavid Somayajulu .sessiondata_size = sizeof(struct ddb_entry), 102afaf5a2dSDavid Somayajulu .host_template = &qla4xxx_driver_template, 103afaf5a2dSDavid Somayajulu 104afaf5a2dSDavid Somayajulu .tgt_dscvr = qla4xxx_tgt_dscvr, 105afaf5a2dSDavid Somayajulu .get_conn_param = qla4xxx_conn_get_param, 106afaf5a2dSDavid Somayajulu .get_session_param = qla4xxx_sess_get_param, 107afaf5a2dSDavid Somayajulu .start_conn = qla4xxx_conn_start, 108afaf5a2dSDavid Somayajulu .stop_conn = qla4xxx_conn_stop, 109afaf5a2dSDavid Somayajulu .session_recovery_timedout = qla4xxx_recovery_timedout, 110afaf5a2dSDavid Somayajulu }; 111afaf5a2dSDavid Somayajulu 112afaf5a2dSDavid Somayajulu static struct scsi_transport_template *qla4xxx_scsi_transport; 113afaf5a2dSDavid Somayajulu 114afaf5a2dSDavid Somayajulu static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) 115afaf5a2dSDavid Somayajulu { 116afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = session->dd_data; 117afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = ddb_entry->ha; 118afaf5a2dSDavid Somayajulu 119afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) " 120afaf5a2dSDavid Somayajulu "secs exhausted, marking device DEAD.\n", ha->host_no, 121afaf5a2dSDavid Somayajulu __func__, ddb_entry->fw_ddb_index, 122afaf5a2dSDavid Somayajulu ha->port_down_retry_count)); 123afaf5a2dSDavid Somayajulu 124afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_DEAD); 125afaf5a2dSDavid Somayajulu 126afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = " 127afaf5a2dSDavid Somayajulu "0x%lx\n", ha->host_no, __func__, ha->dpc_flags)); 128afaf5a2dSDavid Somayajulu queue_work(ha->dpc_thread, &ha->dpc_work); 129afaf5a2dSDavid Somayajulu } 130afaf5a2dSDavid Somayajulu 131afaf5a2dSDavid Somayajulu static int qla4xxx_conn_start(struct iscsi_cls_conn *conn) 132afaf5a2dSDavid Somayajulu { 133afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 134afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 135afaf5a2dSDavid Somayajulu 136afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 137afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 138afaf5a2dSDavid Somayajulu 139afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n", 140afaf5a2dSDavid Somayajulu ddb_entry->ha->host_no, __func__, 141afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 142afaf5a2dSDavid Somayajulu iscsi_unblock_session(session); 143afaf5a2dSDavid Somayajulu return 0; 144afaf5a2dSDavid Somayajulu } 145afaf5a2dSDavid Somayajulu 146afaf5a2dSDavid Somayajulu static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag) 147afaf5a2dSDavid Somayajulu { 148afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 149afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 150afaf5a2dSDavid Somayajulu 151afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 152afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 153afaf5a2dSDavid Somayajulu 154afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n", 155afaf5a2dSDavid Somayajulu ddb_entry->ha->host_no, __func__, 156afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 157afaf5a2dSDavid Somayajulu if (flag == STOP_CONN_RECOVER) 158afaf5a2dSDavid Somayajulu iscsi_block_session(session); 159afaf5a2dSDavid Somayajulu else 160afaf5a2dSDavid Somayajulu printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag); 161afaf5a2dSDavid Somayajulu } 162afaf5a2dSDavid Somayajulu 163afaf5a2dSDavid Somayajulu static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, 164afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 165afaf5a2dSDavid Somayajulu { 166afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = sess->dd_data; 167afaf5a2dSDavid Somayajulu int len; 168afaf5a2dSDavid Somayajulu 169afaf5a2dSDavid Somayajulu switch (param) { 170afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TARGET_NAME: 171afaf5a2dSDavid Somayajulu len = snprintf(buf, PAGE_SIZE - 1, "%s\n", 172afaf5a2dSDavid Somayajulu ddb_entry->iscsi_name); 173afaf5a2dSDavid Somayajulu break; 174afaf5a2dSDavid Somayajulu case ISCSI_PARAM_TPGT: 175afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u\n", ddb_entry->tpgt); 176afaf5a2dSDavid Somayajulu break; 177afaf5a2dSDavid Somayajulu default: 178afaf5a2dSDavid Somayajulu return -ENOSYS; 179afaf5a2dSDavid Somayajulu } 180afaf5a2dSDavid Somayajulu 181afaf5a2dSDavid Somayajulu return len; 182afaf5a2dSDavid Somayajulu } 183afaf5a2dSDavid Somayajulu 184afaf5a2dSDavid Somayajulu static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, 185afaf5a2dSDavid Somayajulu enum iscsi_param param, char *buf) 186afaf5a2dSDavid Somayajulu { 187afaf5a2dSDavid Somayajulu struct iscsi_cls_session *session; 188afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 189afaf5a2dSDavid Somayajulu int len; 190afaf5a2dSDavid Somayajulu 191afaf5a2dSDavid Somayajulu session = iscsi_dev_to_session(conn->dev.parent); 192afaf5a2dSDavid Somayajulu ddb_entry = session->dd_data; 193afaf5a2dSDavid Somayajulu 194afaf5a2dSDavid Somayajulu switch (param) { 195afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_PORT: 196afaf5a2dSDavid Somayajulu len = sprintf(buf, "%hu\n", ddb_entry->port); 197afaf5a2dSDavid Somayajulu break; 198afaf5a2dSDavid Somayajulu case ISCSI_PARAM_CONN_ADDRESS: 199afaf5a2dSDavid Somayajulu /* TODO: what are the ipv6 bits */ 200afaf5a2dSDavid Somayajulu len = sprintf(buf, "%u.%u.%u.%u\n", 201afaf5a2dSDavid Somayajulu NIPQUAD(ddb_entry->ip_addr)); 202afaf5a2dSDavid Somayajulu break; 203afaf5a2dSDavid Somayajulu default: 204afaf5a2dSDavid Somayajulu return -ENOSYS; 205afaf5a2dSDavid Somayajulu } 206afaf5a2dSDavid Somayajulu 207afaf5a2dSDavid Somayajulu return len; 208afaf5a2dSDavid Somayajulu } 209afaf5a2dSDavid Somayajulu 210afaf5a2dSDavid Somayajulu static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no, 211afaf5a2dSDavid Somayajulu uint32_t enable, struct sockaddr *dst_addr) 212afaf5a2dSDavid Somayajulu { 213afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 214afaf5a2dSDavid Somayajulu struct Scsi_Host *shost; 215afaf5a2dSDavid Somayajulu struct sockaddr_in *addr; 216afaf5a2dSDavid Somayajulu struct sockaddr_in6 *addr6; 217afaf5a2dSDavid Somayajulu int ret = 0; 218afaf5a2dSDavid Somayajulu 219afaf5a2dSDavid Somayajulu shost = scsi_host_lookup(host_no); 220afaf5a2dSDavid Somayajulu if (IS_ERR(shost)) { 221afaf5a2dSDavid Somayajulu printk(KERN_ERR "Could not find host no %u\n", host_no); 222afaf5a2dSDavid Somayajulu return -ENODEV; 223afaf5a2dSDavid Somayajulu } 224afaf5a2dSDavid Somayajulu 225afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) shost->hostdata; 226afaf5a2dSDavid Somayajulu 227afaf5a2dSDavid Somayajulu switch (type) { 228afaf5a2dSDavid Somayajulu case ISCSI_TGT_DSCVR_SEND_TARGETS: 229afaf5a2dSDavid Somayajulu if (dst_addr->sa_family == AF_INET) { 230afaf5a2dSDavid Somayajulu addr = (struct sockaddr_in *)dst_addr; 231afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, 232afaf5a2dSDavid Somayajulu addr->sin_port) != QLA_SUCCESS) 233afaf5a2dSDavid Somayajulu ret = -EIO; 234afaf5a2dSDavid Somayajulu } else if (dst_addr->sa_family == AF_INET6) { 235afaf5a2dSDavid Somayajulu /* 236afaf5a2dSDavid Somayajulu * TODO: fix qla4xxx_send_tgts 237afaf5a2dSDavid Somayajulu */ 238afaf5a2dSDavid Somayajulu addr6 = (struct sockaddr_in6 *)dst_addr; 239afaf5a2dSDavid Somayajulu if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, 240afaf5a2dSDavid Somayajulu addr6->sin6_port) != QLA_SUCCESS) 241afaf5a2dSDavid Somayajulu ret = -EIO; 242afaf5a2dSDavid Somayajulu } else 243afaf5a2dSDavid Somayajulu ret = -ENOSYS; 244afaf5a2dSDavid Somayajulu break; 245afaf5a2dSDavid Somayajulu default: 246afaf5a2dSDavid Somayajulu ret = -ENOSYS; 247afaf5a2dSDavid Somayajulu } 248afaf5a2dSDavid Somayajulu 249afaf5a2dSDavid Somayajulu scsi_host_put(shost); 250afaf5a2dSDavid Somayajulu return ret; 251afaf5a2dSDavid Somayajulu } 252afaf5a2dSDavid Somayajulu 253afaf5a2dSDavid Somayajulu void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) 254afaf5a2dSDavid Somayajulu { 255afaf5a2dSDavid Somayajulu if (!ddb_entry->sess) 256afaf5a2dSDavid Somayajulu return; 257afaf5a2dSDavid Somayajulu 258afaf5a2dSDavid Somayajulu if (ddb_entry->conn) { 259afaf5a2dSDavid Somayajulu iscsi_if_destroy_session_done(ddb_entry->conn); 260afaf5a2dSDavid Somayajulu iscsi_destroy_conn(ddb_entry->conn); 261afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 262afaf5a2dSDavid Somayajulu } 263afaf5a2dSDavid Somayajulu iscsi_free_session(ddb_entry->sess); 264afaf5a2dSDavid Somayajulu } 265afaf5a2dSDavid Somayajulu 266afaf5a2dSDavid Somayajulu int qla4xxx_add_sess(struct ddb_entry *ddb_entry) 267afaf5a2dSDavid Somayajulu { 268afaf5a2dSDavid Somayajulu int err; 269afaf5a2dSDavid Somayajulu 270afaf5a2dSDavid Somayajulu err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); 271afaf5a2dSDavid Somayajulu if (err) { 272afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add session.\n")); 273afaf5a2dSDavid Somayajulu return err; 274afaf5a2dSDavid Somayajulu } 275afaf5a2dSDavid Somayajulu 276afaf5a2dSDavid Somayajulu ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0); 277afaf5a2dSDavid Somayajulu if (!ddb_entry->conn) { 278afaf5a2dSDavid Somayajulu iscsi_remove_session(ddb_entry->sess); 279afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_ERR "Could not add connection.\n")); 280afaf5a2dSDavid Somayajulu return -ENOMEM; 281afaf5a2dSDavid Somayajulu } 282afaf5a2dSDavid Somayajulu 283afaf5a2dSDavid Somayajulu ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; 284afaf5a2dSDavid Somayajulu iscsi_if_create_session_done(ddb_entry->conn); 285afaf5a2dSDavid Somayajulu return 0; 286afaf5a2dSDavid Somayajulu } 287afaf5a2dSDavid Somayajulu 288afaf5a2dSDavid Somayajulu struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) 289afaf5a2dSDavid Somayajulu { 290afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry; 291afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess; 292afaf5a2dSDavid Somayajulu 293afaf5a2dSDavid Somayajulu sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport); 294afaf5a2dSDavid Somayajulu if (!sess) 295afaf5a2dSDavid Somayajulu return NULL; 296afaf5a2dSDavid Somayajulu 297afaf5a2dSDavid Somayajulu ddb_entry = sess->dd_data; 298afaf5a2dSDavid Somayajulu memset(ddb_entry, 0, sizeof(*ddb_entry)); 299afaf5a2dSDavid Somayajulu ddb_entry->ha = ha; 300afaf5a2dSDavid Somayajulu ddb_entry->sess = sess; 301afaf5a2dSDavid Somayajulu return ddb_entry; 302afaf5a2dSDavid Somayajulu } 303afaf5a2dSDavid Somayajulu 304afaf5a2dSDavid Somayajulu /* 305afaf5a2dSDavid Somayajulu * Timer routines 306afaf5a2dSDavid Somayajulu */ 307afaf5a2dSDavid Somayajulu 308afaf5a2dSDavid Somayajulu static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, 309afaf5a2dSDavid Somayajulu unsigned long interval) 310afaf5a2dSDavid Somayajulu { 311afaf5a2dSDavid Somayajulu DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", 312afaf5a2dSDavid Somayajulu __func__, ha->host->host_no)); 313afaf5a2dSDavid Somayajulu init_timer(&ha->timer); 314afaf5a2dSDavid Somayajulu ha->timer.expires = jiffies + interval * HZ; 315afaf5a2dSDavid Somayajulu ha->timer.data = (unsigned long)ha; 316afaf5a2dSDavid Somayajulu ha->timer.function = (void (*)(unsigned long))func; 317afaf5a2dSDavid Somayajulu add_timer(&ha->timer); 318afaf5a2dSDavid Somayajulu ha->timer_active = 1; 319afaf5a2dSDavid Somayajulu } 320afaf5a2dSDavid Somayajulu 321afaf5a2dSDavid Somayajulu static void qla4xxx_stop_timer(struct scsi_qla_host *ha) 322afaf5a2dSDavid Somayajulu { 323afaf5a2dSDavid Somayajulu del_timer_sync(&ha->timer); 324afaf5a2dSDavid Somayajulu ha->timer_active = 0; 325afaf5a2dSDavid Somayajulu } 326afaf5a2dSDavid Somayajulu 327afaf5a2dSDavid Somayajulu /*** 328afaf5a2dSDavid Somayajulu * qla4xxx_mark_device_missing - mark a device as missing. 329afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 330afaf5a2dSDavid Somayajulu * @ddb_entry: Pointer to device database entry 331afaf5a2dSDavid Somayajulu * 332afaf5a2dSDavid Somayajulu * This routine marks a device missing and resets the relogin retry count. 333afaf5a2dSDavid Somayajulu **/ 334afaf5a2dSDavid Somayajulu void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, 335afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry) 336afaf5a2dSDavid Somayajulu { 337afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->state, DDB_STATE_MISSING); 338afaf5a2dSDavid Somayajulu DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", 339afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, ddb_entry->target, 340afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 341afaf5a2dSDavid Somayajulu iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); 342afaf5a2dSDavid Somayajulu } 343afaf5a2dSDavid Somayajulu 344afaf5a2dSDavid Somayajulu static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, 345afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, 346afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd, 347afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 348afaf5a2dSDavid Somayajulu { 349afaf5a2dSDavid Somayajulu struct srb *srb; 350afaf5a2dSDavid Somayajulu 351afaf5a2dSDavid Somayajulu srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); 352afaf5a2dSDavid Somayajulu if (!srb) 353afaf5a2dSDavid Somayajulu return srb; 354afaf5a2dSDavid Somayajulu 355afaf5a2dSDavid Somayajulu atomic_set(&srb->ref_count, 1); 356afaf5a2dSDavid Somayajulu srb->ha = ha; 357afaf5a2dSDavid Somayajulu srb->ddb = ddb_entry; 358afaf5a2dSDavid Somayajulu srb->cmd = cmd; 359afaf5a2dSDavid Somayajulu srb->flags = 0; 360afaf5a2dSDavid Somayajulu cmd->SCp.ptr = (void *)srb; 361afaf5a2dSDavid Somayajulu cmd->scsi_done = done; 362afaf5a2dSDavid Somayajulu 363afaf5a2dSDavid Somayajulu return srb; 364afaf5a2dSDavid Somayajulu } 365afaf5a2dSDavid Somayajulu 366afaf5a2dSDavid Somayajulu static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) 367afaf5a2dSDavid Somayajulu { 368afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 369afaf5a2dSDavid Somayajulu 370afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 371afaf5a2dSDavid Somayajulu if (cmd->use_sg) { 372afaf5a2dSDavid Somayajulu pci_unmap_sg(ha->pdev, cmd->request_buffer, 373afaf5a2dSDavid Somayajulu cmd->use_sg, cmd->sc_data_direction); 374afaf5a2dSDavid Somayajulu } else if (cmd->request_bufflen) { 375afaf5a2dSDavid Somayajulu pci_unmap_single(ha->pdev, srb->dma_handle, 376afaf5a2dSDavid Somayajulu cmd->request_bufflen, 377afaf5a2dSDavid Somayajulu cmd->sc_data_direction); 378afaf5a2dSDavid Somayajulu } 379afaf5a2dSDavid Somayajulu srb->flags &= ~SRB_DMA_VALID; 380afaf5a2dSDavid Somayajulu } 381afaf5a2dSDavid Somayajulu cmd->SCp.ptr = NULL; 382afaf5a2dSDavid Somayajulu } 383afaf5a2dSDavid Somayajulu 384afaf5a2dSDavid Somayajulu void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) 385afaf5a2dSDavid Somayajulu { 386afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd = srb->cmd; 387afaf5a2dSDavid Somayajulu 388afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 389afaf5a2dSDavid Somayajulu 390afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 391afaf5a2dSDavid Somayajulu 392afaf5a2dSDavid Somayajulu cmd->scsi_done(cmd); 393afaf5a2dSDavid Somayajulu } 394afaf5a2dSDavid Somayajulu 395afaf5a2dSDavid Somayajulu /** 396afaf5a2dSDavid Somayajulu * qla4xxx_queuecommand - scsi layer issues scsi command to driver. 397afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 398afaf5a2dSDavid Somayajulu * @done_fn: Function that the driver calls to notify the SCSI mid-layer 399afaf5a2dSDavid Somayajulu * that the command has been processed. 400afaf5a2dSDavid Somayajulu * 401afaf5a2dSDavid Somayajulu * Remarks: 402afaf5a2dSDavid Somayajulu * This routine is invoked by Linux to send a SCSI command to the driver. 403afaf5a2dSDavid Somayajulu * The mid-level driver tries to ensure that queuecommand never gets 404afaf5a2dSDavid Somayajulu * invoked concurrently with itself or the interrupt handler (although 405afaf5a2dSDavid Somayajulu * the interrupt handler may call this routine as part of request- 406afaf5a2dSDavid Somayajulu * completion handling). Unfortunely, it sometimes calls the scheduler 407afaf5a2dSDavid Somayajulu * in interrupt context which is a big NO! NO!. 408afaf5a2dSDavid Somayajulu **/ 409afaf5a2dSDavid Somayajulu static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, 410afaf5a2dSDavid Somayajulu void (*done)(struct scsi_cmnd *)) 411afaf5a2dSDavid Somayajulu { 412afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 413afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 414afaf5a2dSDavid Somayajulu struct srb *srb; 415afaf5a2dSDavid Somayajulu int rval; 416afaf5a2dSDavid Somayajulu 417afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 418afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { 419afaf5a2dSDavid Somayajulu cmd->result = DID_NO_CONNECT << 16; 420afaf5a2dSDavid Somayajulu goto qc_fail_command; 421afaf5a2dSDavid Somayajulu } 422afaf5a2dSDavid Somayajulu goto qc_host_busy; 423afaf5a2dSDavid Somayajulu } 424afaf5a2dSDavid Somayajulu 425afaf5a2dSDavid Somayajulu spin_unlock_irq(ha->host->host_lock); 426afaf5a2dSDavid Somayajulu 427afaf5a2dSDavid Somayajulu srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); 428afaf5a2dSDavid Somayajulu if (!srb) 429afaf5a2dSDavid Somayajulu goto qc_host_busy_lock; 430afaf5a2dSDavid Somayajulu 431afaf5a2dSDavid Somayajulu rval = qla4xxx_send_command_to_isp(ha, srb); 432afaf5a2dSDavid Somayajulu if (rval != QLA_SUCCESS) 433afaf5a2dSDavid Somayajulu goto qc_host_busy_free_sp; 434afaf5a2dSDavid Somayajulu 435afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 436afaf5a2dSDavid Somayajulu return 0; 437afaf5a2dSDavid Somayajulu 438afaf5a2dSDavid Somayajulu qc_host_busy_free_sp: 439afaf5a2dSDavid Somayajulu qla4xxx_srb_free_dma(ha, srb); 440afaf5a2dSDavid Somayajulu mempool_free(srb, ha->srb_mempool); 441afaf5a2dSDavid Somayajulu 442afaf5a2dSDavid Somayajulu qc_host_busy_lock: 443afaf5a2dSDavid Somayajulu spin_lock_irq(ha->host->host_lock); 444afaf5a2dSDavid Somayajulu 445afaf5a2dSDavid Somayajulu qc_host_busy: 446afaf5a2dSDavid Somayajulu return SCSI_MLQUEUE_HOST_BUSY; 447afaf5a2dSDavid Somayajulu 448afaf5a2dSDavid Somayajulu qc_fail_command: 449afaf5a2dSDavid Somayajulu done(cmd); 450afaf5a2dSDavid Somayajulu 451afaf5a2dSDavid Somayajulu return 0; 452afaf5a2dSDavid Somayajulu } 453afaf5a2dSDavid Somayajulu 454afaf5a2dSDavid Somayajulu /** 455afaf5a2dSDavid Somayajulu * qla4xxx_mem_free - frees memory allocated to adapter 456afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 457afaf5a2dSDavid Somayajulu * 458afaf5a2dSDavid Somayajulu * Frees memory previously allocated by qla4xxx_mem_alloc 459afaf5a2dSDavid Somayajulu **/ 460afaf5a2dSDavid Somayajulu static void qla4xxx_mem_free(struct scsi_qla_host *ha) 461afaf5a2dSDavid Somayajulu { 462afaf5a2dSDavid Somayajulu if (ha->queues) 463afaf5a2dSDavid Somayajulu dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, 464afaf5a2dSDavid Somayajulu ha->queues_dma); 465afaf5a2dSDavid Somayajulu 466afaf5a2dSDavid Somayajulu ha->queues_len = 0; 467afaf5a2dSDavid Somayajulu ha->queues = NULL; 468afaf5a2dSDavid Somayajulu ha->queues_dma = 0; 469afaf5a2dSDavid Somayajulu ha->request_ring = NULL; 470afaf5a2dSDavid Somayajulu ha->request_dma = 0; 471afaf5a2dSDavid Somayajulu ha->response_ring = NULL; 472afaf5a2dSDavid Somayajulu ha->response_dma = 0; 473afaf5a2dSDavid Somayajulu ha->shadow_regs = NULL; 474afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = 0; 475afaf5a2dSDavid Somayajulu 476afaf5a2dSDavid Somayajulu /* Free srb pool. */ 477afaf5a2dSDavid Somayajulu if (ha->srb_mempool) 478afaf5a2dSDavid Somayajulu mempool_destroy(ha->srb_mempool); 479afaf5a2dSDavid Somayajulu 480afaf5a2dSDavid Somayajulu ha->srb_mempool = NULL; 481afaf5a2dSDavid Somayajulu 482afaf5a2dSDavid Somayajulu /* release io space registers */ 483afaf5a2dSDavid Somayajulu if (ha->reg) 484afaf5a2dSDavid Somayajulu iounmap(ha->reg); 485afaf5a2dSDavid Somayajulu pci_release_regions(ha->pdev); 486afaf5a2dSDavid Somayajulu } 487afaf5a2dSDavid Somayajulu 488afaf5a2dSDavid Somayajulu /** 489afaf5a2dSDavid Somayajulu * qla4xxx_mem_alloc - allocates memory for use by adapter. 490afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 491afaf5a2dSDavid Somayajulu * 492afaf5a2dSDavid Somayajulu * Allocates DMA memory for request and response queues. Also allocates memory 493afaf5a2dSDavid Somayajulu * for srbs. 494afaf5a2dSDavid Somayajulu **/ 495afaf5a2dSDavid Somayajulu static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) 496afaf5a2dSDavid Somayajulu { 497afaf5a2dSDavid Somayajulu unsigned long align; 498afaf5a2dSDavid Somayajulu 499afaf5a2dSDavid Somayajulu /* Allocate contiguous block of DMA memory for queues. */ 500afaf5a2dSDavid Somayajulu ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 501afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + 502afaf5a2dSDavid Somayajulu sizeof(struct shadow_regs) + 503afaf5a2dSDavid Somayajulu MEM_ALIGN_VALUE + 504afaf5a2dSDavid Somayajulu (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); 505afaf5a2dSDavid Somayajulu ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, 506afaf5a2dSDavid Somayajulu &ha->queues_dma, GFP_KERNEL); 507afaf5a2dSDavid Somayajulu if (ha->queues == NULL) { 508afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 509afaf5a2dSDavid Somayajulu "Memory Allocation failed - queues.\n"); 510afaf5a2dSDavid Somayajulu 511afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 512afaf5a2dSDavid Somayajulu } 513afaf5a2dSDavid Somayajulu memset(ha->queues, 0, ha->queues_len); 514afaf5a2dSDavid Somayajulu 515afaf5a2dSDavid Somayajulu /* 516afaf5a2dSDavid Somayajulu * As per RISC alignment requirements -- the bus-address must be a 517afaf5a2dSDavid Somayajulu * multiple of the request-ring size (in bytes). 518afaf5a2dSDavid Somayajulu */ 519afaf5a2dSDavid Somayajulu align = 0; 520afaf5a2dSDavid Somayajulu if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) 521afaf5a2dSDavid Somayajulu align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & 522afaf5a2dSDavid Somayajulu (MEM_ALIGN_VALUE - 1)); 523afaf5a2dSDavid Somayajulu 524afaf5a2dSDavid Somayajulu /* Update request and response queue pointers. */ 525afaf5a2dSDavid Somayajulu ha->request_dma = ha->queues_dma + align; 526afaf5a2dSDavid Somayajulu ha->request_ring = (struct queue_entry *) (ha->queues + align); 527afaf5a2dSDavid Somayajulu ha->response_dma = ha->queues_dma + align + 528afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); 529afaf5a2dSDavid Somayajulu ha->response_ring = (struct queue_entry *) (ha->queues + align + 530afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 531afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 532afaf5a2dSDavid Somayajulu ha->shadow_regs_dma = ha->queues_dma + align + 533afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + 534afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); 535afaf5a2dSDavid Somayajulu ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + 536afaf5a2dSDavid Somayajulu (REQUEST_QUEUE_DEPTH * 537afaf5a2dSDavid Somayajulu QUEUE_SIZE) + 538afaf5a2dSDavid Somayajulu (RESPONSE_QUEUE_DEPTH * 539afaf5a2dSDavid Somayajulu QUEUE_SIZE)); 540afaf5a2dSDavid Somayajulu 541afaf5a2dSDavid Somayajulu /* Allocate memory for srb pool. */ 542afaf5a2dSDavid Somayajulu ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, 543afaf5a2dSDavid Somayajulu mempool_free_slab, srb_cachep); 544afaf5a2dSDavid Somayajulu if (ha->srb_mempool == NULL) { 545afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 546afaf5a2dSDavid Somayajulu "Memory Allocation failed - SRB Pool.\n"); 547afaf5a2dSDavid Somayajulu 548afaf5a2dSDavid Somayajulu goto mem_alloc_error_exit; 549afaf5a2dSDavid Somayajulu } 550afaf5a2dSDavid Somayajulu 551afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 552afaf5a2dSDavid Somayajulu 553afaf5a2dSDavid Somayajulu mem_alloc_error_exit: 554afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 555afaf5a2dSDavid Somayajulu return QLA_ERROR; 556afaf5a2dSDavid Somayajulu } 557afaf5a2dSDavid Somayajulu 558afaf5a2dSDavid Somayajulu /** 559afaf5a2dSDavid Somayajulu * qla4xxx_timer - checks every second for work to do. 560afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 561afaf5a2dSDavid Somayajulu **/ 562afaf5a2dSDavid Somayajulu static void qla4xxx_timer(struct scsi_qla_host *ha) 563afaf5a2dSDavid Somayajulu { 564afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 565afaf5a2dSDavid Somayajulu int start_dpc = 0; 566afaf5a2dSDavid Somayajulu 567afaf5a2dSDavid Somayajulu /* Search for relogin's to time-out and port down retry. */ 568afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { 569afaf5a2dSDavid Somayajulu /* Count down time between sending relogins */ 570afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 571afaf5a2dSDavid Somayajulu !test_bit(DF_RELOGIN, &ddb_entry->flags) && 572afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { 573afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) != 574afaf5a2dSDavid Somayajulu INVALID_ENTRY) { 575afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->retry_relogin_timer) 576afaf5a2dSDavid Somayajulu == 0) { 577afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry-> 578afaf5a2dSDavid Somayajulu retry_relogin_timer, 579afaf5a2dSDavid Somayajulu INVALID_ENTRY); 580afaf5a2dSDavid Somayajulu set_bit(DPC_RELOGIN_DEVICE, 581afaf5a2dSDavid Somayajulu &ha->dpc_flags); 582afaf5a2dSDavid Somayajulu set_bit(DF_RELOGIN, &ddb_entry->flags); 583afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: index [%d]" 584afaf5a2dSDavid Somayajulu " login device\n", 585afaf5a2dSDavid Somayajulu ha->host_no, __func__, 586afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index)); 587afaf5a2dSDavid Somayajulu } else 588afaf5a2dSDavid Somayajulu atomic_dec(&ddb_entry-> 589afaf5a2dSDavid Somayajulu retry_relogin_timer); 590afaf5a2dSDavid Somayajulu } 591afaf5a2dSDavid Somayajulu } 592afaf5a2dSDavid Somayajulu 593afaf5a2dSDavid Somayajulu /* Wait for relogin to timeout */ 594afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->relogin_timer) && 595afaf5a2dSDavid Somayajulu (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { 596afaf5a2dSDavid Somayajulu /* 597afaf5a2dSDavid Somayajulu * If the relogin times out and the device is 598afaf5a2dSDavid Somayajulu * still NOT ONLINE then try and relogin again. 599afaf5a2dSDavid Somayajulu */ 600afaf5a2dSDavid Somayajulu if (atomic_read(&ddb_entry->state) != 601afaf5a2dSDavid Somayajulu DDB_STATE_ONLINE && 602afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_device_state == 603afaf5a2dSDavid Somayajulu DDB_DS_SESSION_FAILED) { 604afaf5a2dSDavid Somayajulu /* Reset retry relogin timer */ 605afaf5a2dSDavid Somayajulu atomic_inc(&ddb_entry->relogin_retry_count); 606afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: index[%d] relogin" 607afaf5a2dSDavid Somayajulu " timed out-retrying" 608afaf5a2dSDavid Somayajulu " relogin (%d)\n", 609afaf5a2dSDavid Somayajulu ha->host_no, 610afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 611afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry-> 612afaf5a2dSDavid Somayajulu relogin_retry_count)) 613afaf5a2dSDavid Somayajulu ); 614afaf5a2dSDavid Somayajulu start_dpc++; 615afaf5a2dSDavid Somayajulu DEBUG(printk("scsi%ld:%d:%d: index [%d] " 616afaf5a2dSDavid Somayajulu "initate relogin after" 617afaf5a2dSDavid Somayajulu " %d seconds\n", 618afaf5a2dSDavid Somayajulu ha->host_no, ddb_entry->bus, 619afaf5a2dSDavid Somayajulu ddb_entry->target, 620afaf5a2dSDavid Somayajulu ddb_entry->fw_ddb_index, 621afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4) 622afaf5a2dSDavid Somayajulu ); 623afaf5a2dSDavid Somayajulu 624afaf5a2dSDavid Somayajulu atomic_set(&ddb_entry->retry_relogin_timer, 625afaf5a2dSDavid Somayajulu ddb_entry->default_time2wait + 4); 626afaf5a2dSDavid Somayajulu } 627afaf5a2dSDavid Somayajulu } 628afaf5a2dSDavid Somayajulu } 629afaf5a2dSDavid Somayajulu 630afaf5a2dSDavid Somayajulu /* Check for heartbeat interval. */ 631afaf5a2dSDavid Somayajulu if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && 632afaf5a2dSDavid Somayajulu ha->heartbeat_interval != 0) { 633afaf5a2dSDavid Somayajulu ha->seconds_since_last_heartbeat++; 634afaf5a2dSDavid Somayajulu if (ha->seconds_since_last_heartbeat > 635afaf5a2dSDavid Somayajulu ha->heartbeat_interval + 2) 636afaf5a2dSDavid Somayajulu set_bit(DPC_RESET_HA, &ha->dpc_flags); 637afaf5a2dSDavid Somayajulu } 638afaf5a2dSDavid Somayajulu 639afaf5a2dSDavid Somayajulu 640afaf5a2dSDavid Somayajulu /* Wakeup the dpc routine for this adapter, if needed. */ 641afaf5a2dSDavid Somayajulu if ((start_dpc || 642afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 643afaf5a2dSDavid Somayajulu test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || 644afaf5a2dSDavid Somayajulu test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || 645afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || 646afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 647afaf5a2dSDavid Somayajulu test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || 648afaf5a2dSDavid Somayajulu test_bit(DPC_AEN, &ha->dpc_flags)) && 649afaf5a2dSDavid Somayajulu ha->dpc_thread) { 650afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" 651afaf5a2dSDavid Somayajulu " - dpc flags = 0x%lx\n", 652afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 653afaf5a2dSDavid Somayajulu queue_work(ha->dpc_thread, &ha->dpc_work); 654afaf5a2dSDavid Somayajulu } 655afaf5a2dSDavid Somayajulu 656afaf5a2dSDavid Somayajulu /* Reschedule timer thread to call us back in one second */ 657afaf5a2dSDavid Somayajulu mod_timer(&ha->timer, jiffies + HZ); 658afaf5a2dSDavid Somayajulu 659afaf5a2dSDavid Somayajulu DEBUG2(ha->seconds_since_last_intr++); 660afaf5a2dSDavid Somayajulu } 661afaf5a2dSDavid Somayajulu 662afaf5a2dSDavid Somayajulu /** 663afaf5a2dSDavid Somayajulu * qla4xxx_cmd_wait - waits for all outstanding commands to complete 664afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 665afaf5a2dSDavid Somayajulu * 666afaf5a2dSDavid Somayajulu * This routine stalls the driver until all outstanding commands are returned. 667afaf5a2dSDavid Somayajulu * Caller must release the Hardware Lock prior to calling this routine. 668afaf5a2dSDavid Somayajulu **/ 669afaf5a2dSDavid Somayajulu static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) 670afaf5a2dSDavid Somayajulu { 671afaf5a2dSDavid Somayajulu uint32_t index = 0; 672afaf5a2dSDavid Somayajulu int stat = QLA_SUCCESS; 673afaf5a2dSDavid Somayajulu unsigned long flags; 674afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 675afaf5a2dSDavid Somayajulu int wait_cnt = WAIT_CMD_TOV; /* 676afaf5a2dSDavid Somayajulu * Initialized for 30 seconds as we 677afaf5a2dSDavid Somayajulu * expect all commands to retuned 678afaf5a2dSDavid Somayajulu * ASAP. 679afaf5a2dSDavid Somayajulu */ 680afaf5a2dSDavid Somayajulu 681afaf5a2dSDavid Somayajulu while (wait_cnt) { 682afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 683afaf5a2dSDavid Somayajulu /* Find a command that hasn't completed. */ 684afaf5a2dSDavid Somayajulu for (index = 0; index < ha->host->can_queue; index++) { 685afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, index); 686afaf5a2dSDavid Somayajulu if (cmd != NULL) 687afaf5a2dSDavid Somayajulu break; 688afaf5a2dSDavid Somayajulu } 689afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 690afaf5a2dSDavid Somayajulu 691afaf5a2dSDavid Somayajulu /* If No Commands are pending, wait is complete */ 692afaf5a2dSDavid Somayajulu if (index == ha->host->can_queue) { 693afaf5a2dSDavid Somayajulu break; 694afaf5a2dSDavid Somayajulu } 695afaf5a2dSDavid Somayajulu 696afaf5a2dSDavid Somayajulu /* If we timed out on waiting for commands to come back 697afaf5a2dSDavid Somayajulu * return ERROR. 698afaf5a2dSDavid Somayajulu */ 699afaf5a2dSDavid Somayajulu wait_cnt--; 700afaf5a2dSDavid Somayajulu if (wait_cnt == 0) 701afaf5a2dSDavid Somayajulu stat = QLA_ERROR; 702afaf5a2dSDavid Somayajulu else { 703afaf5a2dSDavid Somayajulu msleep(1000); 704afaf5a2dSDavid Somayajulu } 705afaf5a2dSDavid Somayajulu } /* End of While (wait_cnt) */ 706afaf5a2dSDavid Somayajulu 707afaf5a2dSDavid Somayajulu return stat; 708afaf5a2dSDavid Somayajulu } 709afaf5a2dSDavid Somayajulu 710afaf5a2dSDavid Somayajulu /** 711afaf5a2dSDavid Somayajulu * qla4010_soft_reset - performs soft reset. 712afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 713afaf5a2dSDavid Somayajulu **/ 714afaf5a2dSDavid Somayajulu static int qla4010_soft_reset(struct scsi_qla_host *ha) 715afaf5a2dSDavid Somayajulu { 716afaf5a2dSDavid Somayajulu uint32_t max_wait_time; 717afaf5a2dSDavid Somayajulu unsigned long flags = 0; 718afaf5a2dSDavid Somayajulu int status = QLA_ERROR; 719afaf5a2dSDavid Somayajulu uint32_t ctrl_status; 720afaf5a2dSDavid Somayajulu 721afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 722afaf5a2dSDavid Somayajulu 723afaf5a2dSDavid Somayajulu /* 724afaf5a2dSDavid Somayajulu * If the SCSI Reset Interrupt bit is set, clear it. 725afaf5a2dSDavid Somayajulu * Otherwise, the Soft Reset won't work. 726afaf5a2dSDavid Somayajulu */ 727afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 728afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) 729afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 730afaf5a2dSDavid Somayajulu 731afaf5a2dSDavid Somayajulu /* Issue Soft Reset */ 732afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); 733afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 734afaf5a2dSDavid Somayajulu 735afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 736afaf5a2dSDavid Somayajulu 737afaf5a2dSDavid Somayajulu /* Wait until the Network Reset Intr bit is cleared */ 738afaf5a2dSDavid Somayajulu max_wait_time = RESET_INTR_TOV; 739afaf5a2dSDavid Somayajulu do { 740afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 741afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 742afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 743afaf5a2dSDavid Somayajulu 744afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) == 0) 745afaf5a2dSDavid Somayajulu break; 746afaf5a2dSDavid Somayajulu 747afaf5a2dSDavid Somayajulu msleep(1000); 748afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 749afaf5a2dSDavid Somayajulu 750afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { 751afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING 752afaf5a2dSDavid Somayajulu "scsi%ld: Network Reset Intr not cleared by " 753afaf5a2dSDavid Somayajulu "Network function, clearing it now!\n", 754afaf5a2dSDavid Somayajulu ha->host_no)); 755afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 756afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); 757afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 758afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 759afaf5a2dSDavid Somayajulu } 760afaf5a2dSDavid Somayajulu 761afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 762afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 763afaf5a2dSDavid Somayajulu do { 764afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 765afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 766afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 767afaf5a2dSDavid Somayajulu 768afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SOFT_RESET) == 0) { 769afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 770afaf5a2dSDavid Somayajulu break; 771afaf5a2dSDavid Somayajulu } 772afaf5a2dSDavid Somayajulu 773afaf5a2dSDavid Somayajulu msleep(1000); 774afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 775afaf5a2dSDavid Somayajulu 776afaf5a2dSDavid Somayajulu /* 777afaf5a2dSDavid Somayajulu * Also, make sure that the SCSI Reset Interrupt bit has been cleared 778afaf5a2dSDavid Somayajulu * after the soft reset has taken place. 779afaf5a2dSDavid Somayajulu */ 780afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 781afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 782afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { 783afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); 784afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 785afaf5a2dSDavid Somayajulu } 786afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 787afaf5a2dSDavid Somayajulu 788afaf5a2dSDavid Somayajulu /* If soft reset fails then most probably the bios on other 789afaf5a2dSDavid Somayajulu * function is also enabled. 790afaf5a2dSDavid Somayajulu * Since the initialization is sequential the other fn 791afaf5a2dSDavid Somayajulu * wont be able to acknowledge the soft reset. 792afaf5a2dSDavid Somayajulu * Issue a force soft reset to workaround this scenario. 793afaf5a2dSDavid Somayajulu */ 794afaf5a2dSDavid Somayajulu if (max_wait_time == 0) { 795afaf5a2dSDavid Somayajulu /* Issue Force Soft Reset */ 796afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 797afaf5a2dSDavid Somayajulu writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); 798afaf5a2dSDavid Somayajulu readl(&ha->reg->ctrl_status); 799afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 800afaf5a2dSDavid Somayajulu /* Wait until the firmware tells us the Soft Reset is done */ 801afaf5a2dSDavid Somayajulu max_wait_time = SOFT_RESET_TOV; 802afaf5a2dSDavid Somayajulu do { 803afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 804afaf5a2dSDavid Somayajulu ctrl_status = readw(&ha->reg->ctrl_status); 805afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 806afaf5a2dSDavid Somayajulu 807afaf5a2dSDavid Somayajulu if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { 808afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 809afaf5a2dSDavid Somayajulu break; 810afaf5a2dSDavid Somayajulu } 811afaf5a2dSDavid Somayajulu 812afaf5a2dSDavid Somayajulu msleep(1000); 813afaf5a2dSDavid Somayajulu } while ((--max_wait_time)); 814afaf5a2dSDavid Somayajulu } 815afaf5a2dSDavid Somayajulu 816afaf5a2dSDavid Somayajulu return status; 817afaf5a2dSDavid Somayajulu } 818afaf5a2dSDavid Somayajulu 819afaf5a2dSDavid Somayajulu /** 820afaf5a2dSDavid Somayajulu * qla4xxx_topcat_reset - performs hard reset of TopCat Chip. 821afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 822afaf5a2dSDavid Somayajulu **/ 823afaf5a2dSDavid Somayajulu static int qla4xxx_topcat_reset(struct scsi_qla_host *ha) 824afaf5a2dSDavid Somayajulu { 825afaf5a2dSDavid Somayajulu unsigned long flags; 826afaf5a2dSDavid Somayajulu 827afaf5a2dSDavid Somayajulu ql4xxx_lock_nvram(ha); 828afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 829afaf5a2dSDavid Somayajulu writel(set_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha)); 830afaf5a2dSDavid Somayajulu readl(isp_gp_out(ha)); 831afaf5a2dSDavid Somayajulu mdelay(1); 832afaf5a2dSDavid Somayajulu 833afaf5a2dSDavid Somayajulu writel(clr_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha)); 834afaf5a2dSDavid Somayajulu readl(isp_gp_out(ha)); 835afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 836afaf5a2dSDavid Somayajulu mdelay(2523); 837afaf5a2dSDavid Somayajulu 838afaf5a2dSDavid Somayajulu ql4xxx_unlock_nvram(ha); 839afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 840afaf5a2dSDavid Somayajulu } 841afaf5a2dSDavid Somayajulu 842afaf5a2dSDavid Somayajulu /** 843afaf5a2dSDavid Somayajulu * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. 844afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 845afaf5a2dSDavid Somayajulu * 846afaf5a2dSDavid Somayajulu * This routine is called just prior to a HARD RESET to return all 847afaf5a2dSDavid Somayajulu * outstanding commands back to the Operating System. 848afaf5a2dSDavid Somayajulu * Caller should make sure that the following locks are released 849afaf5a2dSDavid Somayajulu * before this calling routine: Hardware lock, and io_request_lock. 850afaf5a2dSDavid Somayajulu **/ 851afaf5a2dSDavid Somayajulu static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) 852afaf5a2dSDavid Somayajulu { 853afaf5a2dSDavid Somayajulu struct srb *srb; 854afaf5a2dSDavid Somayajulu int i; 855afaf5a2dSDavid Somayajulu unsigned long flags; 856afaf5a2dSDavid Somayajulu 857afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 858afaf5a2dSDavid Somayajulu for (i = 0; i < ha->host->can_queue; i++) { 859afaf5a2dSDavid Somayajulu srb = qla4xxx_del_from_active_array(ha, i); 860afaf5a2dSDavid Somayajulu if (srb != NULL) { 861afaf5a2dSDavid Somayajulu srb->cmd->result = DID_RESET << 16; 862afaf5a2dSDavid Somayajulu qla4xxx_srb_compl(ha, srb); 863afaf5a2dSDavid Somayajulu } 864afaf5a2dSDavid Somayajulu } 865afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 866afaf5a2dSDavid Somayajulu 867afaf5a2dSDavid Somayajulu } 868afaf5a2dSDavid Somayajulu 869afaf5a2dSDavid Somayajulu /** 870afaf5a2dSDavid Somayajulu * qla4xxx_hard_reset - performs HBA Hard Reset 871afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 872afaf5a2dSDavid Somayajulu **/ 873afaf5a2dSDavid Somayajulu static int qla4xxx_hard_reset(struct scsi_qla_host *ha) 874afaf5a2dSDavid Somayajulu { 875afaf5a2dSDavid Somayajulu /* The QLA4010 really doesn't have an equivalent to a hard reset */ 876afaf5a2dSDavid Somayajulu qla4xxx_flush_active_srbs(ha); 877afaf5a2dSDavid Somayajulu if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) { 878afaf5a2dSDavid Somayajulu int status = QLA_ERROR; 879afaf5a2dSDavid Somayajulu 880afaf5a2dSDavid Somayajulu if ((qla4010_soft_reset(ha) == QLA_SUCCESS) && 881afaf5a2dSDavid Somayajulu (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) && 882afaf5a2dSDavid Somayajulu (qla4010_soft_reset(ha) == QLA_SUCCESS)) 883afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 884afaf5a2dSDavid Somayajulu return status; 885afaf5a2dSDavid Somayajulu } else 886afaf5a2dSDavid Somayajulu return qla4010_soft_reset(ha); 887afaf5a2dSDavid Somayajulu } 888afaf5a2dSDavid Somayajulu 889afaf5a2dSDavid Somayajulu /** 890afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter - recovers adapter after a fatal error 891afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 892afaf5a2dSDavid Somayajulu * @renew_ddb_list: Indicates what to do with the adapter's ddb list 893afaf5a2dSDavid Somayajulu * after adapter recovery has completed. 894afaf5a2dSDavid Somayajulu * 0=preserve ddb list, 1=destroy and rebuild ddb list 895afaf5a2dSDavid Somayajulu **/ 896afaf5a2dSDavid Somayajulu static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, 897afaf5a2dSDavid Somayajulu uint8_t renew_ddb_list) 898afaf5a2dSDavid Somayajulu { 899afaf5a2dSDavid Somayajulu int status; 900afaf5a2dSDavid Somayajulu 901afaf5a2dSDavid Somayajulu /* Stall incoming I/O until we are done */ 902afaf5a2dSDavid Somayajulu clear_bit(AF_ONLINE, &ha->flags); 903afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, 904afaf5a2dSDavid Somayajulu __func__)); 905afaf5a2dSDavid Somayajulu 906afaf5a2dSDavid Somayajulu /* Wait for outstanding commands to complete. 907afaf5a2dSDavid Somayajulu * Stalls the driver for max 30 secs 908afaf5a2dSDavid Somayajulu */ 909afaf5a2dSDavid Somayajulu status = qla4xxx_cmd_wait(ha); 910afaf5a2dSDavid Somayajulu 911afaf5a2dSDavid Somayajulu qla4xxx_disable_intrs(ha); 912afaf5a2dSDavid Somayajulu 913afaf5a2dSDavid Somayajulu /* Flush any pending ddb changed AENs */ 914afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 915afaf5a2dSDavid Somayajulu 916afaf5a2dSDavid Somayajulu /* Reset the firmware. If successful, function 917afaf5a2dSDavid Somayajulu * returns with ISP interrupts enabled. 918afaf5a2dSDavid Somayajulu */ 919afaf5a2dSDavid Somayajulu if (status == QLA_SUCCESS) { 920afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", 921afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 922afaf5a2dSDavid Somayajulu status = qla4xxx_soft_reset(ha); 923afaf5a2dSDavid Somayajulu } 924afaf5a2dSDavid Somayajulu /* FIXMEkaren: Do we want to keep interrupts enabled and process 925afaf5a2dSDavid Somayajulu AENs after soft reset */ 926afaf5a2dSDavid Somayajulu 927afaf5a2dSDavid Somayajulu /* If firmware (SOFT) reset failed, or if all outstanding 928afaf5a2dSDavid Somayajulu * commands have not returned, then do a HARD reset. 929afaf5a2dSDavid Somayajulu */ 930afaf5a2dSDavid Somayajulu if (status == QLA_ERROR) { 931afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n", 932afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 933afaf5a2dSDavid Somayajulu status = qla4xxx_hard_reset(ha); 934afaf5a2dSDavid Somayajulu } 935afaf5a2dSDavid Somayajulu 936afaf5a2dSDavid Somayajulu /* Flush any pending ddb changed AENs */ 937afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); 938afaf5a2dSDavid Somayajulu 939afaf5a2dSDavid Somayajulu /* Re-initialize firmware. If successful, function returns 940afaf5a2dSDavid Somayajulu * with ISP interrupts enabled */ 941afaf5a2dSDavid Somayajulu if (status == QLA_SUCCESS) { 942afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", 943afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 944afaf5a2dSDavid Somayajulu 945afaf5a2dSDavid Somayajulu /* If successful, AF_ONLINE flag set in 946afaf5a2dSDavid Somayajulu * qla4xxx_initialize_adapter */ 947afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, renew_ddb_list); 948afaf5a2dSDavid Somayajulu } 949afaf5a2dSDavid Somayajulu 950afaf5a2dSDavid Somayajulu /* Failed adapter initialization? 951afaf5a2dSDavid Somayajulu * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ 952afaf5a2dSDavid Somayajulu if ((test_bit(AF_ONLINE, &ha->flags) == 0) && 953afaf5a2dSDavid Somayajulu (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { 954afaf5a2dSDavid Somayajulu /* Adapter initialization failed, see if we can retry 955afaf5a2dSDavid Somayajulu * resetting the ha */ 956afaf5a2dSDavid Somayajulu if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { 957afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; 958afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - retrying " 959afaf5a2dSDavid Somayajulu "(%d) more times\n", ha->host_no, 960afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 961afaf5a2dSDavid Somayajulu set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 962afaf5a2dSDavid Somayajulu status = QLA_ERROR; 963afaf5a2dSDavid Somayajulu } else { 964afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt > 0) { 965afaf5a2dSDavid Somayajulu /* Schedule another Reset HA--DPC will retry */ 966afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt--; 967afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter - " 968afaf5a2dSDavid Somayajulu "retry remaining %d\n", 969afaf5a2dSDavid Somayajulu ha->host_no, 970afaf5a2dSDavid Somayajulu ha->retry_reset_ha_cnt)); 971afaf5a2dSDavid Somayajulu status = QLA_ERROR; 972afaf5a2dSDavid Somayajulu } 973afaf5a2dSDavid Somayajulu 974afaf5a2dSDavid Somayajulu if (ha->retry_reset_ha_cnt == 0) { 975afaf5a2dSDavid Somayajulu /* Recover adapter retries have been exhausted. 976afaf5a2dSDavid Somayajulu * Adapter DEAD */ 977afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter " 978afaf5a2dSDavid Somayajulu "failed - board disabled\n", 979afaf5a2dSDavid Somayajulu ha->host_no)); 980afaf5a2dSDavid Somayajulu qla4xxx_flush_active_srbs(ha); 981afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 982afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 983afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, 984afaf5a2dSDavid Somayajulu &ha->dpc_flags); 985afaf5a2dSDavid Somayajulu status = QLA_ERROR; 986afaf5a2dSDavid Somayajulu } 987afaf5a2dSDavid Somayajulu } 988afaf5a2dSDavid Somayajulu } else { 989afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA, &ha->dpc_flags); 990afaf5a2dSDavid Somayajulu clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); 991afaf5a2dSDavid Somayajulu clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); 992afaf5a2dSDavid Somayajulu } 993afaf5a2dSDavid Somayajulu 994afaf5a2dSDavid Somayajulu ha->adapter_error_count++; 995afaf5a2dSDavid Somayajulu 996afaf5a2dSDavid Somayajulu if (status == QLA_SUCCESS) 997afaf5a2dSDavid Somayajulu qla4xxx_enable_intrs(ha); 998afaf5a2dSDavid Somayajulu 999afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); 1000afaf5a2dSDavid Somayajulu return status; 1001afaf5a2dSDavid Somayajulu } 1002afaf5a2dSDavid Somayajulu 1003afaf5a2dSDavid Somayajulu /** 1004afaf5a2dSDavid Somayajulu * qla4xxx_do_dpc - dpc routine 1005afaf5a2dSDavid Somayajulu * @data: in our case pointer to adapter structure 1006afaf5a2dSDavid Somayajulu * 1007afaf5a2dSDavid Somayajulu * This routine is a task that is schedule by the interrupt handler 1008afaf5a2dSDavid Somayajulu * to perform the background processing for interrupts. We put it 1009afaf5a2dSDavid Somayajulu * on a task queue that is consumed whenever the scheduler runs; that's 1010afaf5a2dSDavid Somayajulu * so you can do anything (i.e. put the process to sleep etc). In fact, 1011afaf5a2dSDavid Somayajulu * the mid-level tries to sleep when it reaches the driver threshold 1012afaf5a2dSDavid Somayajulu * "host->can_queue". This can cause a panic if we were in our interrupt code. 1013afaf5a2dSDavid Somayajulu **/ 1014afaf5a2dSDavid Somayajulu static void qla4xxx_do_dpc(void *data) 1015afaf5a2dSDavid Somayajulu { 1016afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = (struct scsi_qla_host *) data; 1017afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *dtemp; 1018afaf5a2dSDavid Somayajulu 1019afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n", 1020afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1021afaf5a2dSDavid Somayajulu 1022afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n", 1023afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->flags)); 1024afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n", 1025afaf5a2dSDavid Somayajulu ha->host_no, __func__, ha->dpc_flags)); 1026afaf5a2dSDavid Somayajulu 1027afaf5a2dSDavid Somayajulu /* Initialization not yet finished. Don't do anything yet. */ 1028afaf5a2dSDavid Somayajulu if (!test_bit(AF_INIT_DONE, &ha->flags)) 1029afaf5a2dSDavid Somayajulu return; 1030afaf5a2dSDavid Somayajulu 1031afaf5a2dSDavid Somayajulu if (adapter_up(ha) || 1032afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA, &ha->dpc_flags) || 1033afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || 1034afaf5a2dSDavid Somayajulu test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { 1035afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) 1036afaf5a2dSDavid Somayajulu /* 1037afaf5a2dSDavid Somayajulu * dg 09/23 Never initialize ddb list 1038afaf5a2dSDavid Somayajulu * once we up and running 1039afaf5a2dSDavid Somayajulu * qla4xxx_recover_adapter(ha, 1040afaf5a2dSDavid Somayajulu * REBUILD_DDB_LIST); 1041afaf5a2dSDavid Somayajulu */ 1042afaf5a2dSDavid Somayajulu qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); 1043afaf5a2dSDavid Somayajulu 1044afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) 1045afaf5a2dSDavid Somayajulu qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); 1046afaf5a2dSDavid Somayajulu 1047afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { 1048afaf5a2dSDavid Somayajulu uint8_t wait_time = RESET_INTR_TOV; 1049afaf5a2dSDavid Somayajulu unsigned long flags = 0; 1050afaf5a2dSDavid Somayajulu 1051afaf5a2dSDavid Somayajulu qla4xxx_flush_active_srbs(ha); 1052afaf5a2dSDavid Somayajulu 1053afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1054afaf5a2dSDavid Somayajulu while ((readw(&ha->reg->ctrl_status) & 1055afaf5a2dSDavid Somayajulu (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { 1056afaf5a2dSDavid Somayajulu if (--wait_time == 0) 1057afaf5a2dSDavid Somayajulu break; 1058afaf5a2dSDavid Somayajulu 1059afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, 1060afaf5a2dSDavid Somayajulu flags); 1061afaf5a2dSDavid Somayajulu 1062afaf5a2dSDavid Somayajulu msleep(1000); 1063afaf5a2dSDavid Somayajulu 1064afaf5a2dSDavid Somayajulu spin_lock_irqsave(&ha->hardware_lock, flags); 1065afaf5a2dSDavid Somayajulu } 1066afaf5a2dSDavid Somayajulu spin_unlock_irqrestore(&ha->hardware_lock, flags); 1067afaf5a2dSDavid Somayajulu 1068afaf5a2dSDavid Somayajulu if (wait_time == 0) 1069afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld: %s: SR|FSR " 1070afaf5a2dSDavid Somayajulu "bit not cleared-- resetting\n", 1071afaf5a2dSDavid Somayajulu ha->host_no, __func__)); 1072afaf5a2dSDavid Somayajulu } 1073afaf5a2dSDavid Somayajulu } 1074afaf5a2dSDavid Somayajulu 1075afaf5a2dSDavid Somayajulu /* ---- process AEN? --- */ 1076afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) 1077afaf5a2dSDavid Somayajulu qla4xxx_process_aen(ha, PROCESS_ALL_AENS); 1078afaf5a2dSDavid Somayajulu 1079afaf5a2dSDavid Somayajulu /* ---- Get DHCP IP Address? --- */ 1080afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) 1081afaf5a2dSDavid Somayajulu qla4xxx_get_dhcp_ip_address(ha); 1082afaf5a2dSDavid Somayajulu 1083afaf5a2dSDavid Somayajulu /* ---- relogin device? --- */ 1084afaf5a2dSDavid Somayajulu if (adapter_up(ha) && 1085afaf5a2dSDavid Somayajulu test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { 1086afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, dtemp, 1087afaf5a2dSDavid Somayajulu &ha->ddb_list, list) { 1088afaf5a2dSDavid Somayajulu if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && 1089afaf5a2dSDavid Somayajulu atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) 1090afaf5a2dSDavid Somayajulu qla4xxx_relogin_device(ha, ddb_entry); 1091afaf5a2dSDavid Somayajulu 1092afaf5a2dSDavid Somayajulu /* 1093afaf5a2dSDavid Somayajulu * If mbx cmd times out there is no point 1094afaf5a2dSDavid Somayajulu * in continuing further. 1095afaf5a2dSDavid Somayajulu * With large no of targets this can hang 1096afaf5a2dSDavid Somayajulu * the system. 1097afaf5a2dSDavid Somayajulu */ 1098afaf5a2dSDavid Somayajulu if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { 1099afaf5a2dSDavid Somayajulu printk(KERN_WARNING "scsi%ld: %s: " 1100afaf5a2dSDavid Somayajulu "need to reset hba\n", 1101afaf5a2dSDavid Somayajulu ha->host_no, __func__); 1102afaf5a2dSDavid Somayajulu break; 1103afaf5a2dSDavid Somayajulu } 1104afaf5a2dSDavid Somayajulu } 1105afaf5a2dSDavid Somayajulu } 1106afaf5a2dSDavid Somayajulu } 1107afaf5a2dSDavid Somayajulu 1108afaf5a2dSDavid Somayajulu /** 1109afaf5a2dSDavid Somayajulu * qla4xxx_free_adapter - release the adapter 1110afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1111afaf5a2dSDavid Somayajulu **/ 1112afaf5a2dSDavid Somayajulu static void qla4xxx_free_adapter(struct scsi_qla_host *ha) 1113afaf5a2dSDavid Somayajulu { 1114afaf5a2dSDavid Somayajulu 1115afaf5a2dSDavid Somayajulu if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { 1116afaf5a2dSDavid Somayajulu /* Turn-off interrupts on the card. */ 1117afaf5a2dSDavid Somayajulu qla4xxx_disable_intrs(ha); 1118afaf5a2dSDavid Somayajulu } 1119afaf5a2dSDavid Somayajulu 1120afaf5a2dSDavid Somayajulu /* Kill the kernel thread for this host */ 1121afaf5a2dSDavid Somayajulu if (ha->dpc_thread) 1122afaf5a2dSDavid Somayajulu destroy_workqueue(ha->dpc_thread); 1123afaf5a2dSDavid Somayajulu 1124afaf5a2dSDavid Somayajulu /* Issue Soft Reset to put firmware in unknown state */ 1125afaf5a2dSDavid Somayajulu qla4xxx_soft_reset(ha); 1126afaf5a2dSDavid Somayajulu 1127afaf5a2dSDavid Somayajulu /* Remove timer thread, if present */ 1128afaf5a2dSDavid Somayajulu if (ha->timer_active) 1129afaf5a2dSDavid Somayajulu qla4xxx_stop_timer(ha); 1130afaf5a2dSDavid Somayajulu 1131afaf5a2dSDavid Somayajulu /* free extra memory */ 1132afaf5a2dSDavid Somayajulu qla4xxx_mem_free(ha); 1133afaf5a2dSDavid Somayajulu 1134afaf5a2dSDavid Somayajulu /* Detach interrupts */ 1135afaf5a2dSDavid Somayajulu if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) 1136afaf5a2dSDavid Somayajulu free_irq(ha->pdev->irq, ha); 1137afaf5a2dSDavid Somayajulu 1138afaf5a2dSDavid Somayajulu pci_disable_device(ha->pdev); 1139afaf5a2dSDavid Somayajulu 1140afaf5a2dSDavid Somayajulu } 1141afaf5a2dSDavid Somayajulu 1142afaf5a2dSDavid Somayajulu /*** 1143afaf5a2dSDavid Somayajulu * qla4xxx_iospace_config - maps registers 1144afaf5a2dSDavid Somayajulu * @ha: pointer to adapter structure 1145afaf5a2dSDavid Somayajulu * 1146afaf5a2dSDavid Somayajulu * This routines maps HBA's registers from the pci address space 1147afaf5a2dSDavid Somayajulu * into the kernel virtual address space for memory mapped i/o. 1148afaf5a2dSDavid Somayajulu **/ 1149afaf5a2dSDavid Somayajulu static int qla4xxx_iospace_config(struct scsi_qla_host *ha) 1150afaf5a2dSDavid Somayajulu { 1151afaf5a2dSDavid Somayajulu unsigned long pio, pio_len, pio_flags; 1152afaf5a2dSDavid Somayajulu unsigned long mmio, mmio_len, mmio_flags; 1153afaf5a2dSDavid Somayajulu 1154afaf5a2dSDavid Somayajulu pio = pci_resource_start(ha->pdev, 0); 1155afaf5a2dSDavid Somayajulu pio_len = pci_resource_len(ha->pdev, 0); 1156afaf5a2dSDavid Somayajulu pio_flags = pci_resource_flags(ha->pdev, 0); 1157afaf5a2dSDavid Somayajulu if (pio_flags & IORESOURCE_IO) { 1158afaf5a2dSDavid Somayajulu if (pio_len < MIN_IOBASE_LEN) { 1159afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1160afaf5a2dSDavid Somayajulu "Invalid PCI I/O region size\n"); 1161afaf5a2dSDavid Somayajulu pio = 0; 1162afaf5a2dSDavid Somayajulu } 1163afaf5a2dSDavid Somayajulu } else { 1164afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); 1165afaf5a2dSDavid Somayajulu pio = 0; 1166afaf5a2dSDavid Somayajulu } 1167afaf5a2dSDavid Somayajulu 1168afaf5a2dSDavid Somayajulu /* Use MMIO operations for all accesses. */ 1169afaf5a2dSDavid Somayajulu mmio = pci_resource_start(ha->pdev, 1); 1170afaf5a2dSDavid Somayajulu mmio_len = pci_resource_len(ha->pdev, 1); 1171afaf5a2dSDavid Somayajulu mmio_flags = pci_resource_flags(ha->pdev, 1); 1172afaf5a2dSDavid Somayajulu 1173afaf5a2dSDavid Somayajulu if (!(mmio_flags & IORESOURCE_MEM)) { 1174afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1175afaf5a2dSDavid Somayajulu "region #0 not an MMIO resource, aborting\n"); 1176afaf5a2dSDavid Somayajulu 1177afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1178afaf5a2dSDavid Somayajulu } 1179afaf5a2dSDavid Somayajulu if (mmio_len < MIN_IOBASE_LEN) { 1180afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1181afaf5a2dSDavid Somayajulu "Invalid PCI mem region size, aborting\n"); 1182afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1183afaf5a2dSDavid Somayajulu } 1184afaf5a2dSDavid Somayajulu 1185afaf5a2dSDavid Somayajulu if (pci_request_regions(ha->pdev, DRIVER_NAME)) { 1186afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1187afaf5a2dSDavid Somayajulu "Failed to reserve PIO/MMIO regions\n"); 1188afaf5a2dSDavid Somayajulu 1189afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1190afaf5a2dSDavid Somayajulu } 1191afaf5a2dSDavid Somayajulu 1192afaf5a2dSDavid Somayajulu ha->pio_address = pio; 1193afaf5a2dSDavid Somayajulu ha->pio_length = pio_len; 1194afaf5a2dSDavid Somayajulu ha->reg = ioremap(mmio, MIN_IOBASE_LEN); 1195afaf5a2dSDavid Somayajulu if (!ha->reg) { 1196afaf5a2dSDavid Somayajulu dev_err(&ha->pdev->dev, 1197afaf5a2dSDavid Somayajulu "cannot remap MMIO, aborting\n"); 1198afaf5a2dSDavid Somayajulu 1199afaf5a2dSDavid Somayajulu goto iospace_error_exit; 1200afaf5a2dSDavid Somayajulu } 1201afaf5a2dSDavid Somayajulu 1202afaf5a2dSDavid Somayajulu return 0; 1203afaf5a2dSDavid Somayajulu 1204afaf5a2dSDavid Somayajulu iospace_error_exit: 1205afaf5a2dSDavid Somayajulu return -ENOMEM; 1206afaf5a2dSDavid Somayajulu } 1207afaf5a2dSDavid Somayajulu 1208afaf5a2dSDavid Somayajulu /** 1209afaf5a2dSDavid Somayajulu * qla4xxx_probe_adapter - callback function to probe HBA 1210afaf5a2dSDavid Somayajulu * @pdev: pointer to pci_dev structure 1211afaf5a2dSDavid Somayajulu * @pci_device_id: pointer to pci_device entry 1212afaf5a2dSDavid Somayajulu * 1213afaf5a2dSDavid Somayajulu * This routine will probe for Qlogic 4xxx iSCSI host adapters. 1214afaf5a2dSDavid Somayajulu * It returns zero if successful. It also initializes all data necessary for 1215afaf5a2dSDavid Somayajulu * the driver. 1216afaf5a2dSDavid Somayajulu **/ 1217afaf5a2dSDavid Somayajulu static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, 1218afaf5a2dSDavid Somayajulu const struct pci_device_id *ent) 1219afaf5a2dSDavid Somayajulu { 1220afaf5a2dSDavid Somayajulu int ret = -ENODEV, status; 1221afaf5a2dSDavid Somayajulu struct Scsi_Host *host; 1222afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1223afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry, *ddbtemp; 1224afaf5a2dSDavid Somayajulu uint8_t init_retry_count = 0; 1225afaf5a2dSDavid Somayajulu char buf[34]; 1226afaf5a2dSDavid Somayajulu 1227afaf5a2dSDavid Somayajulu if (pci_enable_device(pdev)) 1228afaf5a2dSDavid Somayajulu return -1; 1229afaf5a2dSDavid Somayajulu 1230afaf5a2dSDavid Somayajulu host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); 1231afaf5a2dSDavid Somayajulu if (host == NULL) { 1232afaf5a2dSDavid Somayajulu printk(KERN_WARNING 1233afaf5a2dSDavid Somayajulu "qla4xxx: Couldn't allocate host from scsi layer!\n"); 1234afaf5a2dSDavid Somayajulu goto probe_disable_device; 1235afaf5a2dSDavid Somayajulu } 1236afaf5a2dSDavid Somayajulu 1237afaf5a2dSDavid Somayajulu /* Clear our data area */ 1238afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) host->hostdata; 1239afaf5a2dSDavid Somayajulu memset(ha, 0, sizeof(*ha)); 1240afaf5a2dSDavid Somayajulu 1241afaf5a2dSDavid Somayajulu /* Save the information from PCI BIOS. */ 1242afaf5a2dSDavid Somayajulu ha->pdev = pdev; 1243afaf5a2dSDavid Somayajulu ha->host = host; 1244afaf5a2dSDavid Somayajulu ha->host_no = host->host_no; 1245afaf5a2dSDavid Somayajulu 1246afaf5a2dSDavid Somayajulu /* Configure PCI I/O space. */ 1247afaf5a2dSDavid Somayajulu ret = qla4xxx_iospace_config(ha); 1248afaf5a2dSDavid Somayajulu if (ret) 1249afaf5a2dSDavid Somayajulu goto probe_failed; 1250afaf5a2dSDavid Somayajulu 1251afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", 1252afaf5a2dSDavid Somayajulu pdev->device, pdev->irq, ha->reg); 1253afaf5a2dSDavid Somayajulu 1254afaf5a2dSDavid Somayajulu qla4xxx_config_dma_addressing(ha); 1255afaf5a2dSDavid Somayajulu 1256afaf5a2dSDavid Somayajulu /* Initialize lists and spinlocks. */ 1257afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->ddb_list); 1258afaf5a2dSDavid Somayajulu INIT_LIST_HEAD(&ha->free_srb_q); 1259afaf5a2dSDavid Somayajulu 1260afaf5a2dSDavid Somayajulu mutex_init(&ha->mbox_sem); 1261afaf5a2dSDavid Somayajulu init_waitqueue_head(&ha->mailbox_wait_queue); 1262afaf5a2dSDavid Somayajulu 1263afaf5a2dSDavid Somayajulu spin_lock_init(&ha->hardware_lock); 1264afaf5a2dSDavid Somayajulu spin_lock_init(&ha->list_lock); 1265afaf5a2dSDavid Somayajulu 1266afaf5a2dSDavid Somayajulu /* Allocate dma buffers */ 1267afaf5a2dSDavid Somayajulu if (qla4xxx_mem_alloc(ha)) { 1268afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, 1269afaf5a2dSDavid Somayajulu "[ERROR] Failed to allocate memory for adapter\n"); 1270afaf5a2dSDavid Somayajulu 1271afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1272afaf5a2dSDavid Somayajulu goto probe_failed; 1273afaf5a2dSDavid Somayajulu } 1274afaf5a2dSDavid Somayajulu 1275afaf5a2dSDavid Somayajulu /* 1276afaf5a2dSDavid Somayajulu * Initialize the Host adapter request/response queues and 1277afaf5a2dSDavid Somayajulu * firmware 1278afaf5a2dSDavid Somayajulu * NOTE: interrupts enabled upon successful completion 1279afaf5a2dSDavid Somayajulu */ 1280afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1281afaf5a2dSDavid Somayajulu while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { 1282afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: retrying adapter initialization " 1283afaf5a2dSDavid Somayajulu "(%d)\n", __func__, init_retry_count)); 1284afaf5a2dSDavid Somayajulu qla4xxx_soft_reset(ha); 1285afaf5a2dSDavid Somayajulu status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); 1286afaf5a2dSDavid Somayajulu } 1287afaf5a2dSDavid Somayajulu if (status == QLA_ERROR) { 1288afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); 1289afaf5a2dSDavid Somayajulu 1290afaf5a2dSDavid Somayajulu ret = -ENODEV; 1291afaf5a2dSDavid Somayajulu goto probe_failed; 1292afaf5a2dSDavid Somayajulu } 1293afaf5a2dSDavid Somayajulu 1294afaf5a2dSDavid Somayajulu host->cmd_per_lun = 3; 1295afaf5a2dSDavid Somayajulu host->max_channel = 0; 1296afaf5a2dSDavid Somayajulu host->max_lun = MAX_LUNS - 1; 1297afaf5a2dSDavid Somayajulu host->max_id = MAX_TARGETS; 1298afaf5a2dSDavid Somayajulu host->max_cmd_len = IOCB_MAX_CDB_LEN; 1299afaf5a2dSDavid Somayajulu host->can_queue = MAX_SRBS ; 1300afaf5a2dSDavid Somayajulu host->transportt = qla4xxx_scsi_transport; 1301afaf5a2dSDavid Somayajulu 1302afaf5a2dSDavid Somayajulu ret = scsi_init_shared_tag_map(host, MAX_SRBS); 1303afaf5a2dSDavid Somayajulu if (ret) { 1304afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed"); 1305afaf5a2dSDavid Somayajulu goto probe_failed; 1306afaf5a2dSDavid Somayajulu } 1307afaf5a2dSDavid Somayajulu 1308afaf5a2dSDavid Somayajulu /* Startup the kernel thread for this host adapter. */ 1309afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi: %s: Starting kernel thread for " 1310afaf5a2dSDavid Somayajulu "qla4xxx_dpc\n", __func__)); 1311afaf5a2dSDavid Somayajulu sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); 1312afaf5a2dSDavid Somayajulu ha->dpc_thread = create_singlethread_workqueue(buf); 1313afaf5a2dSDavid Somayajulu if (!ha->dpc_thread) { 1314afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); 1315afaf5a2dSDavid Somayajulu ret = -ENODEV; 1316afaf5a2dSDavid Somayajulu goto probe_failed; 1317afaf5a2dSDavid Somayajulu } 1318afaf5a2dSDavid Somayajulu INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc, ha); 1319afaf5a2dSDavid Somayajulu 1320afaf5a2dSDavid Somayajulu ret = request_irq(pdev->irq, qla4xxx_intr_handler, 1321afaf5a2dSDavid Somayajulu SA_INTERRUPT|SA_SHIRQ, "qla4xxx", ha); 1322afaf5a2dSDavid Somayajulu if (ret) { 1323afaf5a2dSDavid Somayajulu dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" 1324afaf5a2dSDavid Somayajulu " already in use.\n", pdev->irq); 1325afaf5a2dSDavid Somayajulu goto probe_failed; 1326afaf5a2dSDavid Somayajulu } 1327afaf5a2dSDavid Somayajulu set_bit(AF_IRQ_ATTACHED, &ha->flags); 1328afaf5a2dSDavid Somayajulu host->irq = pdev->irq; 1329afaf5a2dSDavid Somayajulu DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); 1330afaf5a2dSDavid Somayajulu 1331afaf5a2dSDavid Somayajulu qla4xxx_enable_intrs(ha); 1332afaf5a2dSDavid Somayajulu 1333afaf5a2dSDavid Somayajulu /* Start timer thread. */ 1334afaf5a2dSDavid Somayajulu qla4xxx_start_timer(ha, qla4xxx_timer, 1); 1335afaf5a2dSDavid Somayajulu 1336afaf5a2dSDavid Somayajulu set_bit(AF_INIT_DONE, &ha->flags); 1337afaf5a2dSDavid Somayajulu 1338afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, ha); 1339afaf5a2dSDavid Somayajulu 1340afaf5a2dSDavid Somayajulu ret = scsi_add_host(host, &pdev->dev); 1341afaf5a2dSDavid Somayajulu if (ret) 1342afaf5a2dSDavid Somayajulu goto probe_failed; 1343afaf5a2dSDavid Somayajulu 1344afaf5a2dSDavid Somayajulu /* Update transport device information for all devices. */ 1345afaf5a2dSDavid Somayajulu list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { 1346afaf5a2dSDavid Somayajulu if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) 1347afaf5a2dSDavid Somayajulu if (qla4xxx_add_sess(ddb_entry)) 1348afaf5a2dSDavid Somayajulu goto remove_host; 1349afaf5a2dSDavid Somayajulu } 1350afaf5a2dSDavid Somayajulu 1351afaf5a2dSDavid Somayajulu printk(KERN_INFO 1352afaf5a2dSDavid Somayajulu " QLogic iSCSI HBA Driver version: %s\n" 1353afaf5a2dSDavid Somayajulu " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", 1354afaf5a2dSDavid Somayajulu qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), 1355afaf5a2dSDavid Somayajulu ha->host_no, ha->firmware_version[0], ha->firmware_version[1], 1356afaf5a2dSDavid Somayajulu ha->patch_number, ha->build_number); 1357afaf5a2dSDavid Somayajulu 1358afaf5a2dSDavid Somayajulu return 0; 1359afaf5a2dSDavid Somayajulu 1360afaf5a2dSDavid Somayajulu remove_host: 1361afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1362afaf5a2dSDavid Somayajulu scsi_remove_host(host); 1363afaf5a2dSDavid Somayajulu 1364afaf5a2dSDavid Somayajulu probe_failed: 1365afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1366afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1367afaf5a2dSDavid Somayajulu 1368afaf5a2dSDavid Somayajulu probe_disable_device: 1369afaf5a2dSDavid Somayajulu pci_disable_device(pdev); 1370afaf5a2dSDavid Somayajulu 1371afaf5a2dSDavid Somayajulu return ret; 1372afaf5a2dSDavid Somayajulu } 1373afaf5a2dSDavid Somayajulu 1374afaf5a2dSDavid Somayajulu /** 1375afaf5a2dSDavid Somayajulu * qla4xxx_remove_adapter - calback function to remove adapter. 1376afaf5a2dSDavid Somayajulu * @pci_dev: PCI device pointer 1377afaf5a2dSDavid Somayajulu **/ 1378afaf5a2dSDavid Somayajulu static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) 1379afaf5a2dSDavid Somayajulu { 1380afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1381afaf5a2dSDavid Somayajulu 1382afaf5a2dSDavid Somayajulu ha = pci_get_drvdata(pdev); 1383afaf5a2dSDavid Somayajulu 1384afaf5a2dSDavid Somayajulu /* remove devs from iscsi_sessions to scsi_devices */ 1385afaf5a2dSDavid Somayajulu qla4xxx_free_ddb_list(ha); 1386afaf5a2dSDavid Somayajulu 1387afaf5a2dSDavid Somayajulu scsi_remove_host(ha->host); 1388afaf5a2dSDavid Somayajulu 1389afaf5a2dSDavid Somayajulu qla4xxx_free_adapter(ha); 1390afaf5a2dSDavid Somayajulu 1391afaf5a2dSDavid Somayajulu scsi_host_put(ha->host); 1392afaf5a2dSDavid Somayajulu 1393afaf5a2dSDavid Somayajulu pci_set_drvdata(pdev, NULL); 1394afaf5a2dSDavid Somayajulu } 1395afaf5a2dSDavid Somayajulu 1396afaf5a2dSDavid Somayajulu /** 1397afaf5a2dSDavid Somayajulu * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. 1398afaf5a2dSDavid Somayajulu * @ha: HA context 1399afaf5a2dSDavid Somayajulu * 1400afaf5a2dSDavid Somayajulu * At exit, the @ha's flags.enable_64bit_addressing set to indicated 1401afaf5a2dSDavid Somayajulu * supported addressing method. 1402afaf5a2dSDavid Somayajulu */ 1403afaf5a2dSDavid Somayajulu void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) 1404afaf5a2dSDavid Somayajulu { 1405afaf5a2dSDavid Somayajulu int retval; 1406afaf5a2dSDavid Somayajulu 1407afaf5a2dSDavid Somayajulu /* Update our PCI device dma_mask for full 64 bit mask */ 1408afaf5a2dSDavid Somayajulu if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { 1409afaf5a2dSDavid Somayajulu if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) { 1410afaf5a2dSDavid Somayajulu dev_dbg(&ha->pdev->dev, 1411afaf5a2dSDavid Somayajulu "Failed to set 64 bit PCI consistent mask; " 1412afaf5a2dSDavid Somayajulu "using 32 bit.\n"); 1413afaf5a2dSDavid Somayajulu retval = pci_set_consistent_dma_mask(ha->pdev, 1414afaf5a2dSDavid Somayajulu DMA_32BIT_MASK); 1415afaf5a2dSDavid Somayajulu } 1416afaf5a2dSDavid Somayajulu } else 1417afaf5a2dSDavid Somayajulu retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); 1418afaf5a2dSDavid Somayajulu } 1419afaf5a2dSDavid Somayajulu 1420afaf5a2dSDavid Somayajulu static int qla4xxx_slave_alloc(struct scsi_device *sdev) 1421afaf5a2dSDavid Somayajulu { 1422afaf5a2dSDavid Somayajulu struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); 1423afaf5a2dSDavid Somayajulu struct ddb_entry *ddb = sess->dd_data; 1424afaf5a2dSDavid Somayajulu 1425afaf5a2dSDavid Somayajulu sdev->hostdata = ddb; 1426afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1427afaf5a2dSDavid Somayajulu scsi_activate_tcq(sdev, sdev->host->can_queue); 1428afaf5a2dSDavid Somayajulu return 0; 1429afaf5a2dSDavid Somayajulu } 1430afaf5a2dSDavid Somayajulu 1431afaf5a2dSDavid Somayajulu static int qla4xxx_slave_configure(struct scsi_device *sdev) 1432afaf5a2dSDavid Somayajulu { 1433afaf5a2dSDavid Somayajulu sdev->tagged_supported = 1; 1434afaf5a2dSDavid Somayajulu return 0; 1435afaf5a2dSDavid Somayajulu } 1436afaf5a2dSDavid Somayajulu 1437afaf5a2dSDavid Somayajulu static void qla4xxx_slave_destroy(struct scsi_device *sdev) 1438afaf5a2dSDavid Somayajulu { 1439afaf5a2dSDavid Somayajulu scsi_deactivate_tcq(sdev, 1); 1440afaf5a2dSDavid Somayajulu } 1441afaf5a2dSDavid Somayajulu 1442afaf5a2dSDavid Somayajulu /** 1443afaf5a2dSDavid Somayajulu * qla4xxx_del_from_active_array - returns an active srb 1444afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1445afaf5a2dSDavid Somayajulu * @index: index into to the active_array 1446afaf5a2dSDavid Somayajulu * 1447afaf5a2dSDavid Somayajulu * This routine removes and returns the srb at the specified index 1448afaf5a2dSDavid Somayajulu **/ 1449afaf5a2dSDavid Somayajulu struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) 1450afaf5a2dSDavid Somayajulu { 1451afaf5a2dSDavid Somayajulu struct srb *srb = NULL; 1452afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1453afaf5a2dSDavid Somayajulu 1454afaf5a2dSDavid Somayajulu if (!(cmd = scsi_host_find_tag(ha->host, index))) 1455afaf5a2dSDavid Somayajulu return srb; 1456afaf5a2dSDavid Somayajulu 1457afaf5a2dSDavid Somayajulu if (!(srb = (struct srb *)cmd->host_scribble)) 1458afaf5a2dSDavid Somayajulu return srb; 1459afaf5a2dSDavid Somayajulu 1460afaf5a2dSDavid Somayajulu /* update counters */ 1461afaf5a2dSDavid Somayajulu if (srb->flags & SRB_DMA_VALID) { 1462afaf5a2dSDavid Somayajulu ha->req_q_count += srb->iocb_cnt; 1463afaf5a2dSDavid Somayajulu ha->iocb_cnt -= srb->iocb_cnt; 1464afaf5a2dSDavid Somayajulu if (srb->cmd) 1465afaf5a2dSDavid Somayajulu srb->cmd->host_scribble = NULL; 1466afaf5a2dSDavid Somayajulu } 1467afaf5a2dSDavid Somayajulu return srb; 1468afaf5a2dSDavid Somayajulu } 1469afaf5a2dSDavid Somayajulu 1470afaf5a2dSDavid Somayajulu /** 1471afaf5a2dSDavid Somayajulu * qla4xxx_soft_reset - performs a SOFT RESET of hba. 1472afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure. 1473afaf5a2dSDavid Somayajulu **/ 1474afaf5a2dSDavid Somayajulu int qla4xxx_soft_reset(struct scsi_qla_host *ha) 1475afaf5a2dSDavid Somayajulu { 1476afaf5a2dSDavid Somayajulu 1477afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_WARNING "scsi%ld: %s: chip reset!\n", ha->host_no, 1478afaf5a2dSDavid Somayajulu __func__)); 1479afaf5a2dSDavid Somayajulu if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) { 1480afaf5a2dSDavid Somayajulu int status = QLA_ERROR; 1481afaf5a2dSDavid Somayajulu 1482afaf5a2dSDavid Somayajulu if ((qla4010_soft_reset(ha) == QLA_SUCCESS) && 1483afaf5a2dSDavid Somayajulu (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) && 1484afaf5a2dSDavid Somayajulu (qla4010_soft_reset(ha) == QLA_SUCCESS) ) 1485afaf5a2dSDavid Somayajulu status = QLA_SUCCESS; 1486afaf5a2dSDavid Somayajulu return status; 1487afaf5a2dSDavid Somayajulu } else 1488afaf5a2dSDavid Somayajulu return qla4010_soft_reset(ha); 1489afaf5a2dSDavid Somayajulu } 1490afaf5a2dSDavid Somayajulu 1491afaf5a2dSDavid Somayajulu /** 1492afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware 1493afaf5a2dSDavid Somayajulu * @ha: actual ha whose done queue will contain the comd returned by firmware. 1494afaf5a2dSDavid Somayajulu * @cmd: Scsi Command to wait on. 1495afaf5a2dSDavid Somayajulu * 1496afaf5a2dSDavid Somayajulu * This routine waits for the command to be returned by the Firmware 1497afaf5a2dSDavid Somayajulu * for some max time. 1498afaf5a2dSDavid Somayajulu **/ 1499afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, 1500afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd) 1501afaf5a2dSDavid Somayajulu { 1502afaf5a2dSDavid Somayajulu int done = 0; 1503afaf5a2dSDavid Somayajulu struct srb *rp; 1504afaf5a2dSDavid Somayajulu uint32_t max_wait_time = EH_WAIT_CMD_TOV; 1505afaf5a2dSDavid Somayajulu 1506afaf5a2dSDavid Somayajulu do { 1507afaf5a2dSDavid Somayajulu /* Checking to see if its returned to OS */ 1508afaf5a2dSDavid Somayajulu rp = (struct srb *) cmd->SCp.ptr; 1509afaf5a2dSDavid Somayajulu if (rp == NULL) { 1510afaf5a2dSDavid Somayajulu done++; 1511afaf5a2dSDavid Somayajulu break; 1512afaf5a2dSDavid Somayajulu } 1513afaf5a2dSDavid Somayajulu 1514afaf5a2dSDavid Somayajulu msleep(2000); 1515afaf5a2dSDavid Somayajulu } while (max_wait_time--); 1516afaf5a2dSDavid Somayajulu 1517afaf5a2dSDavid Somayajulu return done; 1518afaf5a2dSDavid Somayajulu } 1519afaf5a2dSDavid Somayajulu 1520afaf5a2dSDavid Somayajulu /** 1521afaf5a2dSDavid Somayajulu * qla4xxx_wait_for_hba_online - waits for HBA to come online 1522afaf5a2dSDavid Somayajulu * @ha: Pointer to host adapter structure 1523afaf5a2dSDavid Somayajulu **/ 1524afaf5a2dSDavid Somayajulu static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) 1525afaf5a2dSDavid Somayajulu { 1526afaf5a2dSDavid Somayajulu unsigned long wait_online; 1527afaf5a2dSDavid Somayajulu 1528afaf5a2dSDavid Somayajulu wait_online = jiffies + (30 * HZ); 1529afaf5a2dSDavid Somayajulu while (time_before(jiffies, wait_online)) { 1530afaf5a2dSDavid Somayajulu 1531afaf5a2dSDavid Somayajulu if (adapter_up(ha)) 1532afaf5a2dSDavid Somayajulu return QLA_SUCCESS; 1533afaf5a2dSDavid Somayajulu else if (ha->retry_reset_ha_cnt == 0) 1534afaf5a2dSDavid Somayajulu return QLA_ERROR; 1535afaf5a2dSDavid Somayajulu 1536afaf5a2dSDavid Somayajulu msleep(2000); 1537afaf5a2dSDavid Somayajulu } 1538afaf5a2dSDavid Somayajulu 1539afaf5a2dSDavid Somayajulu return QLA_ERROR; 1540afaf5a2dSDavid Somayajulu } 1541afaf5a2dSDavid Somayajulu 1542afaf5a2dSDavid Somayajulu /** 1543afaf5a2dSDavid Somayajulu * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish. 1544afaf5a2dSDavid Somayajulu * @ha: pointer to to HBA 1545afaf5a2dSDavid Somayajulu * @t: target id 1546afaf5a2dSDavid Somayajulu * @l: lun id 1547afaf5a2dSDavid Somayajulu * 1548afaf5a2dSDavid Somayajulu * This function waits for all outstanding commands to a lun to complete. It 1549afaf5a2dSDavid Somayajulu * returns 0 if all pending commands are returned and 1 otherwise. 1550afaf5a2dSDavid Somayajulu **/ 1551afaf5a2dSDavid Somayajulu static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, 1552afaf5a2dSDavid Somayajulu int t, int l) 1553afaf5a2dSDavid Somayajulu { 1554afaf5a2dSDavid Somayajulu int cnt; 1555afaf5a2dSDavid Somayajulu int status = 0; 1556afaf5a2dSDavid Somayajulu struct scsi_cmnd *cmd; 1557afaf5a2dSDavid Somayajulu 1558afaf5a2dSDavid Somayajulu /* 1559afaf5a2dSDavid Somayajulu * Waiting for all commands for the designated target in the active 1560afaf5a2dSDavid Somayajulu * array 1561afaf5a2dSDavid Somayajulu */ 1562afaf5a2dSDavid Somayajulu for (cnt = 0; cnt < ha->host->can_queue; cnt++) { 1563afaf5a2dSDavid Somayajulu cmd = scsi_host_find_tag(ha->host, cnt); 1564afaf5a2dSDavid Somayajulu if (cmd && cmd->device->id == t && cmd->device->lun == l) { 1565afaf5a2dSDavid Somayajulu if (!qla4xxx_eh_wait_on_command(ha, cmd)) { 1566afaf5a2dSDavid Somayajulu status++; 1567afaf5a2dSDavid Somayajulu break; 1568afaf5a2dSDavid Somayajulu } 1569afaf5a2dSDavid Somayajulu } 1570afaf5a2dSDavid Somayajulu } 1571afaf5a2dSDavid Somayajulu return status; 1572afaf5a2dSDavid Somayajulu } 1573afaf5a2dSDavid Somayajulu 1574afaf5a2dSDavid Somayajulu /** 1575afaf5a2dSDavid Somayajulu * qla4xxx_eh_device_reset - callback for target reset. 1576afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 1577afaf5a2dSDavid Somayajulu * 1578afaf5a2dSDavid Somayajulu * This routine is called by the Linux OS to reset all luns on the 1579afaf5a2dSDavid Somayajulu * specified target. 1580afaf5a2dSDavid Somayajulu **/ 1581afaf5a2dSDavid Somayajulu static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) 1582afaf5a2dSDavid Somayajulu { 1583afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha = to_qla_host(cmd->device->host); 1584afaf5a2dSDavid Somayajulu struct ddb_entry *ddb_entry = cmd->device->hostdata; 1585afaf5a2dSDavid Somayajulu struct srb *sp; 1586afaf5a2dSDavid Somayajulu int ret = FAILED, stat; 1587afaf5a2dSDavid Somayajulu 1588afaf5a2dSDavid Somayajulu sp = (struct srb *) cmd->SCp.ptr; 1589afaf5a2dSDavid Somayajulu if (!sp || !ddb_entry) 1590afaf5a2dSDavid Somayajulu return ret; 1591afaf5a2dSDavid Somayajulu 1592afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1593afaf5a2dSDavid Somayajulu "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, 1594afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 1595afaf5a2dSDavid Somayajulu 1596afaf5a2dSDavid Somayajulu DEBUG2(printk(KERN_INFO 1597afaf5a2dSDavid Somayajulu "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," 1598afaf5a2dSDavid Somayajulu "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, 1599afaf5a2dSDavid Somayajulu cmd, jiffies, cmd->timeout_per_command / HZ, 1600afaf5a2dSDavid Somayajulu ha->dpc_flags, cmd->result, cmd->allowed)); 1601afaf5a2dSDavid Somayajulu 1602afaf5a2dSDavid Somayajulu /* FIXME: wait for hba to go online */ 1603afaf5a2dSDavid Somayajulu stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); 1604afaf5a2dSDavid Somayajulu if (stat != QLA_SUCCESS) { 1605afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); 1606afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 1607afaf5a2dSDavid Somayajulu } 1608afaf5a2dSDavid Somayajulu 1609afaf5a2dSDavid Somayajulu /* Send marker. */ 1610afaf5a2dSDavid Somayajulu ha->marker_needed = 1; 1611afaf5a2dSDavid Somayajulu 1612afaf5a2dSDavid Somayajulu /* 1613afaf5a2dSDavid Somayajulu * If we are coming down the EH path, wait for all commands to complete 1614afaf5a2dSDavid Somayajulu * for the device. 1615afaf5a2dSDavid Somayajulu */ 1616afaf5a2dSDavid Somayajulu if (cmd->device->host->shost_state == SHOST_RECOVERY) { 1617afaf5a2dSDavid Somayajulu if (qla4xxx_eh_wait_for_active_target_commands(ha, 1618afaf5a2dSDavid Somayajulu cmd->device->id, 1619afaf5a2dSDavid Somayajulu cmd->device->lun)){ 1620afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1621afaf5a2dSDavid Somayajulu "DEVICE RESET FAILED - waiting for " 1622afaf5a2dSDavid Somayajulu "commands.\n"); 1623afaf5a2dSDavid Somayajulu goto eh_dev_reset_done; 1624afaf5a2dSDavid Somayajulu } 1625afaf5a2dSDavid Somayajulu } 1626afaf5a2dSDavid Somayajulu 1627afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1628afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", 1629afaf5a2dSDavid Somayajulu ha->host_no, cmd->device->channel, cmd->device->id, 1630afaf5a2dSDavid Somayajulu cmd->device->lun); 1631afaf5a2dSDavid Somayajulu 1632afaf5a2dSDavid Somayajulu ret = SUCCESS; 1633afaf5a2dSDavid Somayajulu 1634afaf5a2dSDavid Somayajulu eh_dev_reset_done: 1635afaf5a2dSDavid Somayajulu 1636afaf5a2dSDavid Somayajulu return ret; 1637afaf5a2dSDavid Somayajulu } 1638afaf5a2dSDavid Somayajulu 1639afaf5a2dSDavid Somayajulu /** 1640afaf5a2dSDavid Somayajulu * qla4xxx_eh_host_reset - kernel callback 1641afaf5a2dSDavid Somayajulu * @cmd: Pointer to Linux's SCSI command structure 1642afaf5a2dSDavid Somayajulu * 1643afaf5a2dSDavid Somayajulu * This routine is invoked by the Linux kernel to perform fatal error 1644afaf5a2dSDavid Somayajulu * recovery on the specified adapter. 1645afaf5a2dSDavid Somayajulu **/ 1646afaf5a2dSDavid Somayajulu static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) 1647afaf5a2dSDavid Somayajulu { 1648afaf5a2dSDavid Somayajulu int return_status = FAILED; 1649afaf5a2dSDavid Somayajulu struct scsi_qla_host *ha; 1650afaf5a2dSDavid Somayajulu 1651afaf5a2dSDavid Somayajulu ha = (struct scsi_qla_host *) cmd->device->host->hostdata; 1652afaf5a2dSDavid Somayajulu 1653afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, 1654afaf5a2dSDavid Somayajulu "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, 1655afaf5a2dSDavid Somayajulu cmd->device->channel, cmd->device->id, cmd->device->lun); 1656afaf5a2dSDavid Somayajulu 1657afaf5a2dSDavid Somayajulu if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { 1658afaf5a2dSDavid Somayajulu DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " 1659afaf5a2dSDavid Somayajulu "DEAD.\n", ha->host_no, cmd->device->channel, 1660afaf5a2dSDavid Somayajulu __func__)); 1661afaf5a2dSDavid Somayajulu 1662afaf5a2dSDavid Somayajulu return FAILED; 1663afaf5a2dSDavid Somayajulu } 1664afaf5a2dSDavid Somayajulu 1665afaf5a2dSDavid Somayajulu if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) { 1666afaf5a2dSDavid Somayajulu return_status = SUCCESS; 1667afaf5a2dSDavid Somayajulu } 1668afaf5a2dSDavid Somayajulu 1669afaf5a2dSDavid Somayajulu dev_info(&ha->pdev->dev, "HOST RESET %s.\n", 1670afaf5a2dSDavid Somayajulu return_status == FAILED ? "FAILED" : "SUCCEDED"); 1671afaf5a2dSDavid Somayajulu 1672afaf5a2dSDavid Somayajulu return return_status; 1673afaf5a2dSDavid Somayajulu } 1674afaf5a2dSDavid Somayajulu 1675afaf5a2dSDavid Somayajulu 1676afaf5a2dSDavid Somayajulu static struct pci_device_id qla4xxx_pci_tbl[] = { 1677afaf5a2dSDavid Somayajulu { 1678afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 1679afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4010, 1680afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 1681afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 1682afaf5a2dSDavid Somayajulu }, 1683afaf5a2dSDavid Somayajulu { 1684afaf5a2dSDavid Somayajulu .vendor = PCI_VENDOR_ID_QLOGIC, 1685afaf5a2dSDavid Somayajulu .device = PCI_DEVICE_ID_QLOGIC_ISP4022, 1686afaf5a2dSDavid Somayajulu .subvendor = PCI_ANY_ID, 1687afaf5a2dSDavid Somayajulu .subdevice = PCI_ANY_ID, 1688afaf5a2dSDavid Somayajulu }, 1689afaf5a2dSDavid Somayajulu {0, 0}, 1690afaf5a2dSDavid Somayajulu }; 1691afaf5a2dSDavid Somayajulu MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); 1692afaf5a2dSDavid Somayajulu 1693afaf5a2dSDavid Somayajulu struct pci_driver qla4xxx_pci_driver = { 1694afaf5a2dSDavid Somayajulu .name = DRIVER_NAME, 1695afaf5a2dSDavid Somayajulu .id_table = qla4xxx_pci_tbl, 1696afaf5a2dSDavid Somayajulu .probe = qla4xxx_probe_adapter, 1697afaf5a2dSDavid Somayajulu .remove = qla4xxx_remove_adapter, 1698afaf5a2dSDavid Somayajulu }; 1699afaf5a2dSDavid Somayajulu 1700afaf5a2dSDavid Somayajulu static int __init qla4xxx_module_init(void) 1701afaf5a2dSDavid Somayajulu { 1702afaf5a2dSDavid Somayajulu int ret; 1703afaf5a2dSDavid Somayajulu 1704afaf5a2dSDavid Somayajulu /* Allocate cache for SRBs. */ 1705afaf5a2dSDavid Somayajulu srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, 1706afaf5a2dSDavid Somayajulu SLAB_HWCACHE_ALIGN, NULL, NULL); 1707afaf5a2dSDavid Somayajulu if (srb_cachep == NULL) { 1708afaf5a2dSDavid Somayajulu printk(KERN_ERR 1709afaf5a2dSDavid Somayajulu "%s: Unable to allocate SRB cache..." 1710afaf5a2dSDavid Somayajulu "Failing load!\n", DRIVER_NAME); 1711afaf5a2dSDavid Somayajulu ret = -ENOMEM; 1712afaf5a2dSDavid Somayajulu goto no_srp_cache; 1713afaf5a2dSDavid Somayajulu } 1714afaf5a2dSDavid Somayajulu 1715afaf5a2dSDavid Somayajulu /* Derive version string. */ 1716afaf5a2dSDavid Somayajulu strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); 1717d7a297baSFrederik Deweerdt if (qla4_extended_error_logging) 1718afaf5a2dSDavid Somayajulu strcat(qla4xxx_version_str, "-debug"); 1719afaf5a2dSDavid Somayajulu 1720afaf5a2dSDavid Somayajulu qla4xxx_scsi_transport = 1721afaf5a2dSDavid Somayajulu iscsi_register_transport(&qla4xxx_iscsi_transport); 1722afaf5a2dSDavid Somayajulu if (!qla4xxx_scsi_transport){ 1723afaf5a2dSDavid Somayajulu ret = -ENODEV; 1724afaf5a2dSDavid Somayajulu goto release_srb_cache; 1725afaf5a2dSDavid Somayajulu } 1726afaf5a2dSDavid Somayajulu 1727afaf5a2dSDavid Somayajulu ret = pci_register_driver(&qla4xxx_pci_driver); 1728afaf5a2dSDavid Somayajulu if (ret) 1729afaf5a2dSDavid Somayajulu goto unregister_transport; 1730afaf5a2dSDavid Somayajulu 1731afaf5a2dSDavid Somayajulu printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); 1732afaf5a2dSDavid Somayajulu return 0; 17335ae16db3SDoug Maxey 1734afaf5a2dSDavid Somayajulu unregister_transport: 1735afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 1736afaf5a2dSDavid Somayajulu release_srb_cache: 1737afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 1738afaf5a2dSDavid Somayajulu no_srp_cache: 1739afaf5a2dSDavid Somayajulu return ret; 1740afaf5a2dSDavid Somayajulu } 1741afaf5a2dSDavid Somayajulu 1742afaf5a2dSDavid Somayajulu static void __exit qla4xxx_module_exit(void) 1743afaf5a2dSDavid Somayajulu { 1744afaf5a2dSDavid Somayajulu pci_unregister_driver(&qla4xxx_pci_driver); 1745afaf5a2dSDavid Somayajulu iscsi_unregister_transport(&qla4xxx_iscsi_transport); 1746afaf5a2dSDavid Somayajulu kmem_cache_destroy(srb_cachep); 1747afaf5a2dSDavid Somayajulu } 1748afaf5a2dSDavid Somayajulu 1749afaf5a2dSDavid Somayajulu module_init(qla4xxx_module_init); 1750afaf5a2dSDavid Somayajulu module_exit(qla4xxx_module_exit); 1751afaf5a2dSDavid Somayajulu 1752afaf5a2dSDavid Somayajulu MODULE_AUTHOR("QLogic Corporation"); 1753afaf5a2dSDavid Somayajulu MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); 1754afaf5a2dSDavid Somayajulu MODULE_LICENSE("GPL"); 1755afaf5a2dSDavid Somayajulu MODULE_VERSION(QLA4XXX_DRIVER_VERSION); 1756