| /* |
| * QLogic iSCSI HBA Driver |
| * Copyright (c) 2003-2010 QLogic Corporation |
| * |
| * See LICENSE.qla4xxx for copyright and licensing details. |
| */ |
| #include <linux/moduleparam.h> |
| #include <linux/slab.h> |
| |
| #include <scsi/scsi_tcq.h> |
| #include <scsi/scsicam.h> |
| |
| #include "ql4_def.h" |
| #include "ql4_version.h" |
| #include "ql4_glbl.h" |
| #include "ql4_dbg.h" |
| #include "ql4_inline.h" |
| |
| /* |
| * Driver version |
| */ |
| static char qla4xxx_version_str[40]; |
| |
| /* |
| * SRB allocation cache |
| */ |
| static struct kmem_cache *srb_cachep; |
| |
| /* |
| * Module parameter information and variables |
| */ |
| int ql4xdontresethba = 0; |
| module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(ql4xdontresethba, |
| "Don't reset the HBA for driver recovery \n" |
| " 0 - It will reset HBA (Default)\n" |
| " 1 - It will NOT reset HBA"); |
| |
| int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ |
| module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(ql4xextended_error_logging, |
| "Option to enable extended error logging, " |
| "Default is 0 - no logging, 1 - debug logging"); |
| |
| int ql4xenablemsix = 1; |
| module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); |
| MODULE_PARM_DESC(ql4xenablemsix, |
| "Set to enable MSI or MSI-X interrupt mechanism.\n" |
| " 0 = enable INTx interrupt mechanism.\n" |
| " 1 = enable MSI-X interrupt mechanism (Default).\n" |
| " 2 = enable MSI interrupt mechanism."); |
| |
| #define QL4_DEF_QDEPTH 32 |
| static int ql4xmaxqdepth = QL4_DEF_QDEPTH; |
| module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(ql4xmaxqdepth, |
| "Maximum queue depth to report for target devices.\n" |
| " Default: 32."); |
| |
| /* |
| * SCSI host template entry points |
| */ |
| static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); |
| |
| /* |
| * iSCSI template entry points |
| */ |
| static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
| enum iscsi_tgt_dscvr type, uint32_t enable, |
| struct sockaddr *dst_addr); |
| static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, |
| enum iscsi_param param, char *buf); |
| static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
| enum iscsi_param param, char *buf); |
| static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
| enum iscsi_host_param param, char *buf); |
| static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); |
| static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); |
| |
| /* |
| * SCSI host template entry points |
| */ |
| static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
| static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); |
| static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); |
| static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); |
| static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); |
| static int qla4xxx_slave_alloc(struct scsi_device *device); |
| static int qla4xxx_slave_configure(struct scsi_device *device); |
| static void qla4xxx_slave_destroy(struct scsi_device *sdev); |
| static void qla4xxx_scan_start(struct Scsi_Host *shost); |
| |
| static struct qla4_8xxx_legacy_intr_set legacy_intr[] = |
| QLA82XX_LEGACY_INTR_CONFIG; |
| |
| static struct scsi_host_template qla4xxx_driver_template = { |
| .module = THIS_MODULE, |
| .name = DRIVER_NAME, |
| .proc_name = DRIVER_NAME, |
| .queuecommand = qla4xxx_queuecommand, |
| |
| .eh_abort_handler = qla4xxx_eh_abort, |
| .eh_device_reset_handler = qla4xxx_eh_device_reset, |
| .eh_target_reset_handler = qla4xxx_eh_target_reset, |
| .eh_host_reset_handler = qla4xxx_eh_host_reset, |
| .eh_timed_out = qla4xxx_eh_cmd_timed_out, |
| |
| .slave_configure = qla4xxx_slave_configure, |
| .slave_alloc = qla4xxx_slave_alloc, |
| .slave_destroy = qla4xxx_slave_destroy, |
| |
| .scan_finished = iscsi_scan_finished, |
| .scan_start = qla4xxx_scan_start, |
| |
| .this_id = -1, |
| .cmd_per_lun = 3, |
| .use_clustering = ENABLE_CLUSTERING, |
| .sg_tablesize = SG_ALL, |
| |
| .max_sectors = 0xFFFF, |
| }; |
| |
| static struct iscsi_transport qla4xxx_iscsi_transport = { |
| .owner = THIS_MODULE, |
| .name = DRIVER_NAME, |
| .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
| CAP_DATA_PATH_OFFLOAD, |
| .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
| ISCSI_TARGET_NAME | ISCSI_TPGT | |
| ISCSI_TARGET_ALIAS, |
| .host_param_mask = ISCSI_HOST_HWADDRESS | |
| ISCSI_HOST_IPADDRESS | |
| ISCSI_HOST_INITIATOR_NAME, |
| .tgt_dscvr = qla4xxx_tgt_dscvr, |
| .get_conn_param = qla4xxx_conn_get_param, |
| .get_session_param = qla4xxx_sess_get_param, |
| .get_host_param = qla4xxx_host_get_param, |
| .session_recovery_timedout = qla4xxx_recovery_timedout, |
| }; |
| |
| static struct scsi_transport_template *qla4xxx_scsi_transport; |
| |
| static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) |
| { |
| struct iscsi_cls_session *session; |
| struct ddb_entry *ddb_entry; |
| |
| session = starget_to_session(scsi_target(sc->device)); |
| ddb_entry = session->dd_data; |
| |
| /* if we are not logged in then the LLD is going to clean up the cmd */ |
| if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) |
| return BLK_EH_RESET_TIMER; |
| else |
| return BLK_EH_NOT_HANDLED; |
| } |
| |
| static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) |
| { |
| struct ddb_entry *ddb_entry = session->dd_data; |
| struct scsi_qla_host *ha = ddb_entry->ha; |
| |
| if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
| atomic_set(&ddb_entry->state, DDB_STATE_DEAD); |
| |
| DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " |
| "of (%d) secs exhausted, marking device DEAD.\n", |
| ha->host_no, __func__, ddb_entry->fw_ddb_index, |
| QL4_SESS_RECOVERY_TMO)); |
| } |
| } |
| |
| static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
| enum iscsi_host_param param, char *buf) |
| { |
| struct scsi_qla_host *ha = to_qla_host(shost); |
| int len; |
| |
| switch (param) { |
| case ISCSI_HOST_PARAM_HWADDRESS: |
| len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); |
| break; |
| case ISCSI_HOST_PARAM_IPADDRESS: |
| len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], |
| ha->ip_address[1], ha->ip_address[2], |
| ha->ip_address[3]); |
| break; |
| case ISCSI_HOST_PARAM_INITIATOR_NAME: |
| len = sprintf(buf, "%s\n", ha->name_string); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return len; |
| } |
| |
| static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
| enum iscsi_param param, char *buf) |
| { |
| struct ddb_entry *ddb_entry = sess->dd_data; |
| int len; |
| |
| switch (param) { |
| case ISCSI_PARAM_TARGET_NAME: |
| len = snprintf(buf, PAGE_SIZE - 1, "%s\n", |
| ddb_entry->iscsi_name); |
| break; |
| case ISCSI_PARAM_TPGT: |
| len = sprintf(buf, "%u\n", ddb_entry->tpgt); |
| break; |
| case ISCSI_PARAM_TARGET_ALIAS: |
| len = snprintf(buf, PAGE_SIZE - 1, "%s\n", |
| ddb_entry->iscsi_alias); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return len; |
| } |
| |
| static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, |
| enum iscsi_param param, char *buf) |
| { |
| struct iscsi_cls_session *session; |
| struct ddb_entry *ddb_entry; |
| int len; |
| |
| session = iscsi_dev_to_session(conn->dev.parent); |
| ddb_entry = session->dd_data; |
| |
| switch (param) { |
| case ISCSI_PARAM_CONN_PORT: |
| len = sprintf(buf, "%hu\n", ddb_entry->port); |
| break; |
| case ISCSI_PARAM_CONN_ADDRESS: |
| /* TODO: what are the ipv6 bits */ |
| len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); |
| break; |
| default: |
| return -ENOSYS; |
| } |
| |
| return len; |
| } |
| |
| static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
| enum iscsi_tgt_dscvr type, uint32_t enable, |
| struct sockaddr *dst_addr) |
| { |
| struct scsi_qla_host *ha; |
| struct sockaddr_in *addr; |
| struct sockaddr_in6 *addr6; |
| int ret = 0; |
| |
| ha = (struct scsi_qla_host *) shost->hostdata; |
| |
| switch (type) { |
| case ISCSI_TGT_DSCVR_SEND_TARGETS: |
| if (dst_addr->sa_family == AF_INET) { |
| addr = (struct sockaddr_in *)dst_addr; |
| if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, |
| addr->sin_port) != QLA_SUCCESS) |
| ret = -EIO; |
| } else if (dst_addr->sa_family == AF_INET6) { |
| /* |
| * TODO: fix qla4xxx_send_tgts |
| */ |
| addr6 = (struct sockaddr_in6 *)dst_addr; |
| if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, |
| addr6->sin6_port) != QLA_SUCCESS) |
| ret = -EIO; |
| } else |
| ret = -ENOSYS; |
| break; |
| default: |
| ret = -ENOSYS; |
| } |
| return ret; |
| } |
| |
| void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) |
| { |
| if (!ddb_entry->sess) |
| return; |
| |
| if (ddb_entry->conn) { |
| atomic_set(&ddb_entry->state, DDB_STATE_DEAD); |
| iscsi_remove_session(ddb_entry->sess); |
| } |
| iscsi_free_session(ddb_entry->sess); |
| } |
| |
| int qla4xxx_add_sess(struct ddb_entry *ddb_entry) |
| { |
| int err; |
| |
| ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO; |
| |
| err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); |
| if (err) { |
| DEBUG2(printk(KERN_ERR "Could not add session.\n")); |
| return err; |
| } |
| |
| ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); |
| if (!ddb_entry->conn) { |
| iscsi_remove_session(ddb_entry->sess); |
| DEBUG2(printk(KERN_ERR "Could not add connection.\n")); |
| return -ENOMEM; |
| } |
| |
| /* finally ready to go */ |
| iscsi_unblock_session(ddb_entry->sess); |
| return 0; |
| } |
| |
| struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) |
| { |
| struct ddb_entry *ddb_entry; |
| struct iscsi_cls_session *sess; |
| |
| sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, |
| sizeof(struct ddb_entry)); |
| if (!sess) |
| return NULL; |
| |
| ddb_entry = sess->dd_data; |
| memset(ddb_entry, 0, sizeof(*ddb_entry)); |
| ddb_entry->ha = ha; |
| ddb_entry->sess = sess; |
| return ddb_entry; |
| } |
| |
| static void qla4xxx_scan_start(struct Scsi_Host *shost) |
| { |
| struct scsi_qla_host *ha = shost_priv(shost); |
| struct ddb_entry *ddb_entry, *ddbtemp; |
| |
| /* finish setup of sessions that were already setup in firmware */ |
| list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { |
| if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) |
| qla4xxx_add_sess(ddb_entry); |
| } |
| } |
| |
| /* |
| * Timer routines |
| */ |
| |
| static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, |
| unsigned long interval) |
| { |
| DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", |
| __func__, ha->host->host_no)); |
| init_timer(&ha->timer); |
| ha->timer.expires = jiffies + interval * HZ; |
| ha->timer.data = (unsigned long)ha; |
| ha->timer.function = (void (*)(unsigned long))func; |
| add_timer(&ha->timer); |
| ha->timer_active = 1; |
| } |
| |
| static void qla4xxx_stop_timer(struct scsi_qla_host *ha) |
| { |
| del_timer_sync(&ha->timer); |
| ha->timer_active = 0; |
| } |
| |
| /*** |
| * qla4xxx_mark_device_missing - mark a device as missing. |
| * @ha: Pointer to host adapter structure. |
| * @ddb_entry: Pointer to device database entry |
| * |
| * This routine marks a device missing and close connection. |
| **/ |
| void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, |
| struct ddb_entry *ddb_entry) |
| { |
| if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { |
| atomic_set(&ddb_entry->state, DDB_STATE_MISSING); |
| DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", |
| ha->host_no, ddb_entry->fw_ddb_index)); |
| } else |
| DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, |
| ddb_entry->fw_ddb_index)) |
| |
| iscsi_block_session(ddb_entry->sess); |
| iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); |
| } |
| |
| /** |
| * qla4xxx_mark_all_devices_missing - mark all devices as missing. |
| * @ha: Pointer to host adapter structure. |
| * |
| * This routine marks a device missing and resets the relogin retry count. |
| **/ |
| void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) |
| { |
| struct ddb_entry *ddb_entry, *ddbtemp; |
| list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { |
| qla4xxx_mark_device_missing(ha, ddb_entry); |
| } |
| } |
| |
| static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, |
| struct ddb_entry *ddb_entry, |
| struct scsi_cmnd *cmd, |
| void (*done)(struct scsi_cmnd *)) |
| { |
| struct srb *srb; |
| |
| srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); |
| if (!srb) |
| return srb; |
| |
| kref_init(&srb->srb_ref); |
| srb->ha = ha; |
| srb->ddb = ddb_entry; |
| srb->cmd = cmd; |
| srb->flags = 0; |
| CMD_SP(cmd) = (void *)srb; |
| cmd->scsi_done = done; |
| |
| return srb; |
| } |
| |
| static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) |
| { |
| struct scsi_cmnd *cmd = srb->cmd; |
| |
| if (srb->flags & SRB_DMA_VALID) { |
| scsi_dma_unmap(cmd); |
| srb->flags &= ~SRB_DMA_VALID; |
| } |
| CMD_SP(cmd) = NULL; |
| } |
| |
| void qla4xxx_srb_compl(struct kref *ref) |
| { |
| struct srb *srb = container_of(ref, struct srb, srb_ref); |
| struct scsi_cmnd *cmd = srb->cmd; |
| struct scsi_qla_host *ha = srb->ha; |
| |
| qla4xxx_srb_free_dma(ha, srb); |
| |
| mempool_free(srb, ha->srb_mempool); |
| |
| cmd->scsi_done(cmd); |
| } |
| |
| /** |
| * qla4xxx_queuecommand - scsi layer issues scsi command to driver. |
| * @cmd: Pointer to Linux's SCSI command structure |
| * @done_fn: Function that the driver calls to notify the SCSI mid-layer |
| * that the command has been processed. |
| * |
| * Remarks: |
| * This routine is invoked by Linux to send a SCSI command to the driver. |
| * The mid-level driver tries to ensure that queuecommand never gets |
| * invoked concurrently with itself or the interrupt handler (although |
| * the interrupt handler may call this routine as part of request- |
| * completion handling). Unfortunely, it sometimes calls the scheduler |
| * in interrupt context which is a big NO! NO!. |
| **/ |
| static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, |
| void (*done)(struct scsi_cmnd *)) |
| { |
| struct scsi_qla_host *ha = to_qla_host(cmd->device->host); |
| struct ddb_entry *ddb_entry = cmd->device->hostdata; |
| struct iscsi_cls_session *sess = ddb_entry->sess; |
| struct srb *srb; |
| int rval; |
| |
| if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
| if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) |
| cmd->result = DID_NO_CONNECT << 16; |
| else |
| cmd->result = DID_REQUEUE << 16; |
| goto qc_fail_command; |
| } |
| |
| if (!sess) { |
| cmd->result = DID_IMM_RETRY << 16; |
| goto qc_fail_command; |
| } |
| |
| rval = iscsi_session_chkready(sess); |
| if (rval) { |
| cmd->result = rval; |
| goto qc_fail_command; |
| } |
| |
| if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
| if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { |
| cmd->result = DID_NO_CONNECT << 16; |
| goto qc_fail_command; |
| } |
| return SCSI_MLQUEUE_TARGET_BUSY; |
| } |
| |
| if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
| test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA, &ha->dpc_flags) || |
| test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || |
| test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || |
| !test_bit(AF_ONLINE, &ha->flags) || |
| test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) |
| goto qc_host_busy; |
| |
| spin_unlock_irq(ha->host->host_lock); |
| |
| srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); |
| if (!srb) |
| goto qc_host_busy_lock; |
| |
| rval = qla4xxx_send_command_to_isp(ha, srb); |
| if (rval != QLA_SUCCESS) |
| goto qc_host_busy_free_sp; |
| |
| spin_lock_irq(ha->host->host_lock); |
| return 0; |
| |
| qc_host_busy_free_sp: |
| qla4xxx_srb_free_dma(ha, srb); |
| mempool_free(srb, ha->srb_mempool); |
| |
| qc_host_busy_lock: |
| spin_lock_irq(ha->host->host_lock); |
| |
| qc_host_busy: |
| return SCSI_MLQUEUE_HOST_BUSY; |
| |
| qc_fail_command: |
| done(cmd); |
| |
| return 0; |
| } |
| |
| static DEF_SCSI_QCMD(qla4xxx_queuecommand) |
| |
| /** |
| * qla4xxx_mem_free - frees memory allocated to adapter |
| * @ha: Pointer to host adapter structure. |
| * |
| * Frees memory previously allocated by qla4xxx_mem_alloc |
| **/ |
| static void qla4xxx_mem_free(struct scsi_qla_host *ha) |
| { |
| if (ha->queues) |
| dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, |
| ha->queues_dma); |
| |
| ha->queues_len = 0; |
| ha->queues = NULL; |
| ha->queues_dma = 0; |
| ha->request_ring = NULL; |
| ha->request_dma = 0; |
| ha->response_ring = NULL; |
| ha->response_dma = 0; |
| ha->shadow_regs = NULL; |
| ha->shadow_regs_dma = 0; |
| |
| /* Free srb pool. */ |
| if (ha->srb_mempool) |
| mempool_destroy(ha->srb_mempool); |
| |
| ha->srb_mempool = NULL; |
| |
| /* release io space registers */ |
| if (is_qla8022(ha)) { |
| if (ha->nx_pcibase) |
| iounmap( |
| (struct device_reg_82xx __iomem *)ha->nx_pcibase); |
| } else if (ha->reg) |
| iounmap(ha->reg); |
| pci_release_regions(ha->pdev); |
| } |
| |
| /** |
| * qla4xxx_mem_alloc - allocates memory for use by adapter. |
| * @ha: Pointer to host adapter structure |
| * |
| * Allocates DMA memory for request and response queues. Also allocates memory |
| * for srbs. |
| **/ |
| static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) |
| { |
| unsigned long align; |
| |
| /* Allocate contiguous block of DMA memory for queues. */ |
| ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + |
| (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + |
| sizeof(struct shadow_regs) + |
| MEM_ALIGN_VALUE + |
| (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); |
| ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, |
| &ha->queues_dma, GFP_KERNEL); |
| if (ha->queues == NULL) { |
| ql4_printk(KERN_WARNING, ha, |
| "Memory Allocation failed - queues.\n"); |
| |
| goto mem_alloc_error_exit; |
| } |
| memset(ha->queues, 0, ha->queues_len); |
| |
| /* |
| * As per RISC alignment requirements -- the bus-address must be a |
| * multiple of the request-ring size (in bytes). |
| */ |
| align = 0; |
| if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) |
| align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & |
| (MEM_ALIGN_VALUE - 1)); |
| |
| /* Update request and response queue pointers. */ |
| ha->request_dma = ha->queues_dma + align; |
| ha->request_ring = (struct queue_entry *) (ha->queues + align); |
| ha->response_dma = ha->queues_dma + align + |
| (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); |
| ha->response_ring = (struct queue_entry *) (ha->queues + align + |
| (REQUEST_QUEUE_DEPTH * |
| QUEUE_SIZE)); |
| ha->shadow_regs_dma = ha->queues_dma + align + |
| (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + |
| (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); |
| ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + |
| (REQUEST_QUEUE_DEPTH * |
| QUEUE_SIZE) + |
| (RESPONSE_QUEUE_DEPTH * |
| QUEUE_SIZE)); |
| |
| /* Allocate memory for srb pool. */ |
| ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, |
| mempool_free_slab, srb_cachep); |
| if (ha->srb_mempool == NULL) { |
| ql4_printk(KERN_WARNING, ha, |
| "Memory Allocation failed - SRB Pool.\n"); |
| |
| goto mem_alloc_error_exit; |
| } |
| |
| return QLA_SUCCESS; |
| |
| mem_alloc_error_exit: |
| qla4xxx_mem_free(ha); |
| return QLA_ERROR; |
| } |
| |
| /** |
| * qla4_8xxx_check_fw_alive - Check firmware health |
| * @ha: Pointer to host adapter structure. |
| * |
| * Context: Interrupt |
| **/ |
| static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) |
| { |
| uint32_t fw_heartbeat_counter, halt_status; |
| |
| fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); |
| /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ |
| if (fw_heartbeat_counter == 0xffffffff) { |
| DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " |
| "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", |
| ha->host_no, __func__)); |
| return; |
| } |
| |
| if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { |
| ha->seconds_since_last_heartbeat++; |
| /* FW not alive after 2 seconds */ |
| if (ha->seconds_since_last_heartbeat == 2) { |
| ha->seconds_since_last_heartbeat = 0; |
| halt_status = qla4_8xxx_rd_32(ha, |
| QLA82XX_PEG_HALT_STATUS1); |
| |
| /* Since we cannot change dev_state in interrupt |
| * context, set appropriate DPC flag then wakeup |
| * DPC */ |
| if (halt_status & HALT_STATUS_UNRECOVERABLE) |
| set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); |
| else { |
| printk("scsi%ld: %s: detect abort needed!\n", |
| ha->host_no, __func__); |
| set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| } |
| qla4xxx_wake_dpc(ha); |
| qla4xxx_mailbox_premature_completion(ha); |
| } |
| } else |
| ha->seconds_since_last_heartbeat = 0; |
| |
| ha->fw_heartbeat_counter = fw_heartbeat_counter; |
| } |
| |
| /** |
| * qla4_8xxx_watchdog - Poll dev state |
| * @ha: Pointer to host adapter structure. |
| * |
| * Context: Interrupt |
| **/ |
| void qla4_8xxx_watchdog(struct scsi_qla_host *ha) |
| { |
| uint32_t dev_state; |
| |
| dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); |
| |
| /* don't poll if reset is going on */ |
| if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA, &ha->dpc_flags) || |
| test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags))) { |
| if (dev_state == QLA82XX_DEV_NEED_RESET && |
| !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { |
| if (!ql4xdontresethba) { |
| ql4_printk(KERN_INFO, ha, "%s: HW State: " |
| "NEED RESET!\n", __func__); |
| set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| qla4xxx_wake_dpc(ha); |
| qla4xxx_mailbox_premature_completion(ha); |
| } |
| } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && |
| !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { |
| ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", |
| __func__); |
| set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); |
| qla4xxx_wake_dpc(ha); |
| } else { |
| /* Check firmware health */ |
| qla4_8xxx_check_fw_alive(ha); |
| } |
| } |
| } |
| |
| /** |
| * qla4xxx_timer - checks every second for work to do. |
| * @ha: Pointer to host adapter structure. |
| **/ |
| static void qla4xxx_timer(struct scsi_qla_host *ha) |
| { |
| struct ddb_entry *ddb_entry, *dtemp; |
| int start_dpc = 0; |
| uint16_t w; |
| |
| /* If we are in the middle of AER/EEH processing |
| * skip any processing and reschedule the timer |
| */ |
| if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
| mod_timer(&ha->timer, jiffies + HZ); |
| return; |
| } |
| |
| /* Hardware read to trigger an EEH error during mailbox waits. */ |
| if (!pci_channel_offline(ha->pdev)) |
| pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); |
| |
| if (is_qla8022(ha)) { |
| qla4_8xxx_watchdog(ha); |
| } |
| |
| /* Search for relogin's to time-out and port down retry. */ |
| list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { |
| /* Count down time between sending relogins */ |
| if (adapter_up(ha) && |
| !test_bit(DF_RELOGIN, &ddb_entry->flags) && |
| atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
| if (atomic_read(&ddb_entry->retry_relogin_timer) != |
| INVALID_ENTRY) { |
| if (atomic_read(&ddb_entry->retry_relogin_timer) |
| == 0) { |
| atomic_set(&ddb_entry-> |
| retry_relogin_timer, |
| INVALID_ENTRY); |
| set_bit(DPC_RELOGIN_DEVICE, |
| &ha->dpc_flags); |
| set_bit(DF_RELOGIN, &ddb_entry->flags); |
| DEBUG2(printk("scsi%ld: %s: ddb [%d]" |
| " login device\n", |
| ha->host_no, __func__, |
| ddb_entry->fw_ddb_index)); |
| } else |
| atomic_dec(&ddb_entry-> |
| retry_relogin_timer); |
| } |
| } |
| |
| /* Wait for relogin to timeout */ |
| if (atomic_read(&ddb_entry->relogin_timer) && |
| (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { |
| /* |
| * If the relogin times out and the device is |
| * still NOT ONLINE then try and relogin again. |
| */ |
| if (atomic_read(&ddb_entry->state) != |
| DDB_STATE_ONLINE && |
| ddb_entry->fw_ddb_device_state == |
| DDB_DS_SESSION_FAILED) { |
| /* Reset retry relogin timer */ |
| atomic_inc(&ddb_entry->relogin_retry_count); |
| DEBUG2(printk("scsi%ld: ddb [%d] relogin" |
| " timed out-retrying" |
| " relogin (%d)\n", |
| ha->host_no, |
| ddb_entry->fw_ddb_index, |
| atomic_read(&ddb_entry-> |
| relogin_retry_count)) |
| ); |
| start_dpc++; |
| DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " |
| "initiate relogin after" |
| " %d seconds\n", |
| ha->host_no, ddb_entry->bus, |
| ddb_entry->target, |
| ddb_entry->fw_ddb_index, |
| ddb_entry->default_time2wait + 4) |
| ); |
| |
| atomic_set(&ddb_entry->retry_relogin_timer, |
| ddb_entry->default_time2wait + 4); |
| } |
| } |
| } |
| |
| if (!is_qla8022(ha)) { |
| /* Check for heartbeat interval. */ |
| if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && |
| ha->heartbeat_interval != 0) { |
| ha->seconds_since_last_heartbeat++; |
| if (ha->seconds_since_last_heartbeat > |
| ha->heartbeat_interval + 2) |
| set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| } |
| } |
| |
| /* Wakeup the dpc routine for this adapter, if needed. */ |
| if ((start_dpc || |
| test_bit(DPC_RESET_HA, &ha->dpc_flags) || |
| test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || |
| test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
| test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || |
| test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || |
| test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || |
| test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || |
| test_bit(DPC_AEN, &ha->dpc_flags)) && |
| !test_bit(AF_DPC_SCHEDULED, &ha->flags) && |
| ha->dpc_thread) { |
| DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" |
| " - dpc flags = 0x%lx\n", |
| ha->host_no, __func__, ha->dpc_flags)); |
| qla4xxx_wake_dpc(ha); |
| } |
| |
| /* Reschedule timer thread to call us back in one second */ |
| mod_timer(&ha->timer, jiffies + HZ); |
| |
| DEBUG2(ha->seconds_since_last_intr++); |
| } |
| |
| /** |
| * qla4xxx_cmd_wait - waits for all outstanding commands to complete |
| * @ha: Pointer to host adapter structure. |
| * |
| * This routine stalls the driver until all outstanding commands are returned. |
| * Caller must release the Hardware Lock prior to calling this routine. |
| **/ |
| static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) |
| { |
| uint32_t index = 0; |
| unsigned long flags; |
| struct scsi_cmnd *cmd; |
| |
| unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); |
| |
| DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " |
| "complete\n", WAIT_CMD_TOV)); |
| |
| while (!time_after_eq(jiffies, wtime)) { |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| /* Find a command that hasn't completed. */ |
| for (index = 0; index < ha->host->can_queue; index++) { |
| cmd = scsi_host_find_tag(ha->host, index); |
| /* |
| * We cannot just check if the index is valid, |
| * becase if we are run from the scsi eh, then |
| * the scsi/block layer is going to prevent |
| * the tag from being released. |
| */ |
| if (cmd != NULL && CMD_SP(cmd)) |
| break; |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| /* If No Commands are pending, wait is complete */ |
| if (index == ha->host->can_queue) |
| return QLA_SUCCESS; |
| |
| msleep(1000); |
| } |
| /* If we timed out on waiting for commands to come back |
| * return ERROR. */ |
| return QLA_ERROR; |
| } |
| |
| int qla4xxx_hw_reset(struct scsi_qla_host *ha) |
| { |
| uint32_t ctrl_status; |
| unsigned long flags = 0; |
| |
| DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); |
| |
| if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) |
| return QLA_ERROR; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| |
| /* |
| * If the SCSI Reset Interrupt bit is set, clear it. |
| * Otherwise, the Soft Reset won't work. |
| */ |
| ctrl_status = readw(&ha->reg->ctrl_status); |
| if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) |
| writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); |
| |
| /* Issue Soft Reset */ |
| writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); |
| readl(&ha->reg->ctrl_status); |
| |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| return QLA_SUCCESS; |
| } |
| |
| /** |
| * qla4xxx_soft_reset - performs soft reset. |
| * @ha: Pointer to host adapter structure. |
| **/ |
| int qla4xxx_soft_reset(struct scsi_qla_host *ha) |
| { |
| uint32_t max_wait_time; |
| unsigned long flags = 0; |
| int status; |
| uint32_t ctrl_status; |
| |
| status = qla4xxx_hw_reset(ha); |
| if (status != QLA_SUCCESS) |
| return status; |
| |
| status = QLA_ERROR; |
| /* Wait until the Network Reset Intr bit is cleared */ |
| max_wait_time = RESET_INTR_TOV; |
| do { |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| ctrl_status = readw(&ha->reg->ctrl_status); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| if ((ctrl_status & CSR_NET_RESET_INTR) == 0) |
| break; |
| |
| msleep(1000); |
| } while ((--max_wait_time)); |
| |
| if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { |
| DEBUG2(printk(KERN_WARNING |
| "scsi%ld: Network Reset Intr not cleared by " |
| "Network function, clearing it now!\n", |
| ha->host_no)); |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); |
| readl(&ha->reg->ctrl_status); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| } |
| |
| /* Wait until the firmware tells us the Soft Reset is done */ |
| max_wait_time = SOFT_RESET_TOV; |
| do { |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| ctrl_status = readw(&ha->reg->ctrl_status); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| if ((ctrl_status & CSR_SOFT_RESET) == 0) { |
| status = QLA_SUCCESS; |
| break; |
| } |
| |
| msleep(1000); |
| } while ((--max_wait_time)); |
| |
| /* |
| * Also, make sure that the SCSI Reset Interrupt bit has been cleared |
| * after the soft reset has taken place. |
| */ |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| ctrl_status = readw(&ha->reg->ctrl_status); |
| if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { |
| writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); |
| readl(&ha->reg->ctrl_status); |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| /* If soft reset fails then most probably the bios on other |
| * function is also enabled. |
| * Since the initialization is sequential the other fn |
| * wont be able to acknowledge the soft reset. |
| * Issue a force soft reset to workaround this scenario. |
| */ |
| if (max_wait_time == 0) { |
| /* Issue Force Soft Reset */ |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); |
| readl(&ha->reg->ctrl_status); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| /* Wait until the firmware tells us the Soft Reset is done */ |
| max_wait_time = SOFT_RESET_TOV; |
| do { |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| ctrl_status = readw(&ha->reg->ctrl_status); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { |
| status = QLA_SUCCESS; |
| break; |
| } |
| |
| msleep(1000); |
| } while ((--max_wait_time)); |
| } |
| |
| return status; |
| } |
| |
| /** |
| * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. |
| * @ha: Pointer to host adapter structure. |
| * @res: returned scsi status |
| * |
| * This routine is called just prior to a HARD RESET to return all |
| * outstanding commands back to the Operating System. |
| * Caller should make sure that the following locks are released |
| * before this calling routine: Hardware lock, and io_request_lock. |
| **/ |
| static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) |
| { |
| struct srb *srb; |
| int i; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| for (i = 0; i < ha->host->can_queue; i++) { |
| srb = qla4xxx_del_from_active_array(ha, i); |
| if (srb != NULL) { |
| srb->cmd->result = res; |
| kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
| } |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| } |
| |
| void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) |
| { |
| clear_bit(AF_ONLINE, &ha->flags); |
| |
| /* Disable the board */ |
| ql4_printk(KERN_INFO, ha, "Disabling the board\n"); |
| |
| qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); |
| qla4xxx_mark_all_devices_missing(ha); |
| clear_bit(AF_INIT_DONE, &ha->flags); |
| } |
| |
| /** |
| * qla4xxx_recover_adapter - recovers adapter after a fatal error |
| * @ha: Pointer to host adapter structure. |
| **/ |
| static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) |
| { |
| int status = QLA_ERROR; |
| uint8_t reset_chip = 0; |
| |
| /* Stall incoming I/O until we are done */ |
| scsi_block_requests(ha->host); |
| clear_bit(AF_ONLINE, &ha->flags); |
| |
| DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); |
| |
| set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
| |
| if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) |
| reset_chip = 1; |
| |
| /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) |
| * do not reset adapter, jump to initialize_adapter */ |
| if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
| status = QLA_SUCCESS; |
| goto recover_ha_init_adapter; |
| } |
| |
| /* For the ISP-82xx adapter, issue a stop_firmware if invoked |
| * from eh_host_reset or ioctl module */ |
| if (is_qla8022(ha) && !reset_chip && |
| test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { |
| |
| DEBUG2(ql4_printk(KERN_INFO, ha, |
| "scsi%ld: %s - Performing stop_firmware...\n", |
| ha->host_no, __func__)); |
| status = ha->isp_ops->reset_firmware(ha); |
| if (status == QLA_SUCCESS) { |
| if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
| qla4xxx_cmd_wait(ha); |
| ha->isp_ops->disable_intrs(ha); |
| qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
| qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
| } else { |
| /* If the stop_firmware fails then |
| * reset the entire chip */ |
| reset_chip = 1; |
| clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
| set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| } |
| } |
| |
| /* Issue full chip reset if recovering from a catastrophic error, |
| * or if stop_firmware fails for ISP-82xx. |
| * This is the default case for ISP-4xxx */ |
| if (!is_qla8022(ha) || reset_chip) { |
| if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
| qla4xxx_cmd_wait(ha); |
| qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
| qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
| DEBUG2(ql4_printk(KERN_INFO, ha, |
| "scsi%ld: %s - Performing chip reset..\n", |
| ha->host_no, __func__)); |
| status = ha->isp_ops->reset_chip(ha); |
| } |
| |
| /* Flush any pending ddb changed AENs */ |
| qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
| |
| recover_ha_init_adapter: |
| /* Upon successful firmware/chip reset, re-initialize the adapter */ |
| if (status == QLA_SUCCESS) { |
| /* For ISP-4xxx, force function 1 to always initialize |
| * before function 3 to prevent both funcions from |
| * stepping on top of the other */ |
| if (!is_qla8022(ha) && (ha->mac_index == 3)) |
| ssleep(6); |
| |
| /* NOTE: AF_ONLINE flag set upon successful completion of |
| * qla4xxx_initialize_adapter */ |
| status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); |
| } |
| |
| /* Retry failed adapter initialization, if necessary |
| * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) |
| * case to prevent ping-pong resets between functions */ |
| if (!test_bit(AF_ONLINE, &ha->flags) && |
| !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
| /* Adapter initialization failed, see if we can retry |
| * resetting the ha. |
| * Since we don't want to block the DPC for too long |
| * with multiple resets in the same thread, |
| * utilize DPC to retry */ |
| if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { |
| ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; |
| DEBUG2(printk("scsi%ld: recover adapter - retrying " |
| "(%d) more times\n", ha->host_no, |
| ha->retry_reset_ha_cnt)); |
| set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
| status = QLA_ERROR; |
| } else { |
| if (ha->retry_reset_ha_cnt > 0) { |
| /* Schedule another Reset HA--DPC will retry */ |
| ha->retry_reset_ha_cnt--; |
| DEBUG2(printk("scsi%ld: recover adapter - " |
| "retry remaining %d\n", |
| ha->host_no, |
| ha->retry_reset_ha_cnt)); |
| status = QLA_ERROR; |
| } |
| |
| if (ha->retry_reset_ha_cnt == 0) { |
| /* Recover adapter retries have been exhausted. |
| * Adapter DEAD */ |
| DEBUG2(printk("scsi%ld: recover adapter " |
| "failed - board disabled\n", |
| ha->host_no)); |
| qla4xxx_dead_adapter_cleanup(ha); |
| clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
| clear_bit(DPC_RESET_HA, &ha->dpc_flags); |
| clear_bit(DPC_RESET_HA_FW_CONTEXT, |
| &ha->dpc_flags); |
| status = QLA_ERROR; |
| } |
| } |
| } else { |
| clear_bit(DPC_RESET_HA, &ha->dpc_flags); |
| clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
| clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
| } |
| |
| ha->adapter_error_count++; |
| |
| if (test_bit(AF_ONLINE, &ha->flags)) |
| ha->isp_ops->enable_intrs(ha); |
| |
| scsi_unblock_requests(ha->host); |
| |
| clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
| DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, |
| status == QLA_ERROR ? "FAILED" : "SUCCEDED")); |
| |
| return status; |
| } |
| |
| void qla4xxx_wake_dpc(struct scsi_qla_host *ha) |
| { |
| if (ha->dpc_thread && |
| !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { |
| set_bit(AF_DPC_SCHEDULED, &ha->flags); |
| queue_work(ha->dpc_thread, &ha->dpc_work); |
| } |
| } |
| |
| /** |
| * qla4xxx_do_dpc - dpc routine |
| * @data: in our case pointer to adapter structure |
| * |
| * This routine is a task that is schedule by the interrupt handler |
| * to perform the background processing for interrupts. We put it |
| * on a task queue that is consumed whenever the scheduler runs; that's |
| * so you can do anything (i.e. put the process to sleep etc). In fact, |
| * the mid-level tries to sleep when it reaches the driver threshold |
| * "host->can_queue". This can cause a panic if we were in our interrupt code. |
| **/ |
| static void qla4xxx_do_dpc(struct work_struct *work) |
| { |
| struct scsi_qla_host *ha = |
| container_of(work, struct scsi_qla_host, dpc_work); |
| struct ddb_entry *ddb_entry, *dtemp; |
| int status = QLA_ERROR; |
| |
| DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
| "flags = 0x%08lx, dpc_flags = 0x%08lx\n", |
| ha->host_no, __func__, ha->flags, ha->dpc_flags)) |
| |
| /* Initialization not yet finished. Don't do anything yet. */ |
| if (!test_bit(AF_INIT_DONE, &ha->flags)) |
| goto do_dpc_exit; |
| |
| if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
| DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", |
| ha->host_no, __func__, ha->flags)); |
| goto do_dpc_exit; |
| } |
| |
| if (is_qla8022(ha)) { |
| if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { |
| qla4_8xxx_idc_lock(ha); |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, |
| QLA82XX_DEV_FAILED); |
| qla4_8xxx_idc_unlock(ha); |
| ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); |
| qla4_8xxx_device_state_handler(ha); |
| } |
| if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { |
| qla4_8xxx_need_qsnt_handler(ha); |
| } |
| } |
| |
| if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && |
| (test_bit(DPC_RESET_HA, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { |
| if (ql4xdontresethba) { |
| DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", |
| ha->host_no, __func__)); |
| clear_bit(DPC_RESET_HA, &ha->dpc_flags); |
| clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); |
| clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
| goto dpc_post_reset_ha; |
| } |
| if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || |
| test_bit(DPC_RESET_HA, &ha->dpc_flags)) |
| qla4xxx_recover_adapter(ha); |
| |
| if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
| uint8_t wait_time = RESET_INTR_TOV; |
| |
| while ((readw(&ha->reg->ctrl_status) & |
| (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { |
| if (--wait_time == 0) |
| break; |
| msleep(1000); |
| } |
| if (wait_time == 0) |
| DEBUG2(printk("scsi%ld: %s: SR|FSR " |
| "bit not cleared-- resetting\n", |
| ha->host_no, __func__)); |
| qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
| if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { |
| qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
| status = qla4xxx_recover_adapter(ha); |
| } |
| clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); |
| if (status == QLA_SUCCESS) |
| ha->isp_ops->enable_intrs(ha); |
| } |
| } |
| |
| dpc_post_reset_ha: |
| /* ---- process AEN? --- */ |
| if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) |
| qla4xxx_process_aen(ha, PROCESS_ALL_AENS); |
| |
| /* ---- Get DHCP IP Address? --- */ |
| if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) |
| qla4xxx_get_dhcp_ip_address(ha); |
| |
| /* ---- link change? --- */ |
| if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { |
| if (!test_bit(AF_LINK_UP, &ha->flags)) { |
| /* ---- link down? --- */ |
| list_for_each_entry_safe(ddb_entry, dtemp, |
| &ha->ddb_list, list) { |
| if (atomic_read(&ddb_entry->state) == |
| DDB_STATE_ONLINE) |
| qla4xxx_mark_device_missing(ha, |
| ddb_entry); |
| } |
| } else { |
| /* ---- link up? --- * |
| * F/W will auto login to all devices ONLY ONCE after |
| * link up during driver initialization and runtime |
| * fatal error recovery. Therefore, the driver must |
| * manually relogin to devices when recovering from |
| * connection failures, logouts, expired KATO, etc. */ |
| |
| list_for_each_entry_safe(ddb_entry, dtemp, |
| &ha->ddb_list, list) { |
| if ((atomic_read(&ddb_entry->state) == |
| DDB_STATE_MISSING) || |
| (atomic_read(&ddb_entry->state) == |
| DDB_STATE_DEAD)) { |
| if (ddb_entry->fw_ddb_device_state == |
| DDB_DS_SESSION_ACTIVE) { |
| atomic_set(&ddb_entry->state, |
| DDB_STATE_ONLINE); |
| ql4_printk(KERN_INFO, ha, |
| "scsi%ld: %s: ddb[%d]" |
| " marked ONLINE\n", |
| ha->host_no, __func__, |
| ddb_entry->fw_ddb_index); |
| |
| iscsi_unblock_session( |
| ddb_entry->sess); |
| } else |
| qla4xxx_relogin_device( |
| ha, ddb_entry); |
| } |
| |
| } |
| } |
| } |
| |
| /* ---- relogin device? --- */ |
| if (adapter_up(ha) && |
| test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { |
| list_for_each_entry_safe(ddb_entry, dtemp, |
| &ha->ddb_list, list) { |
| if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && |
| atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) |
| qla4xxx_relogin_device(ha, ddb_entry); |
| |
| /* |
| * If mbx cmd times out there is no point |
| * in continuing further. |
| * With large no of targets this can hang |
| * the system. |
| */ |
| if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { |
| printk(KERN_WARNING "scsi%ld: %s: " |
| "need to reset hba\n", |
| ha->host_no, __func__); |
| break; |
| } |
| } |
| } |
| |
| do_dpc_exit: |
| clear_bit(AF_DPC_SCHEDULED, &ha->flags); |
| } |
| |
| /** |
| * qla4xxx_free_adapter - release the adapter |
| * @ha: pointer to adapter structure |
| **/ |
| static void qla4xxx_free_adapter(struct scsi_qla_host *ha) |
| { |
| |
| if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { |
| /* Turn-off interrupts on the card. */ |
| ha->isp_ops->disable_intrs(ha); |
| } |
| |
| /* Remove timer thread, if present */ |
| if (ha->timer_active) |
| qla4xxx_stop_timer(ha); |
| |
| /* Kill the kernel thread for this host */ |
| if (ha->dpc_thread) |
| destroy_workqueue(ha->dpc_thread); |
| |
| /* Put firmware in known state */ |
| ha->isp_ops->reset_firmware(ha); |
| |
| if (is_qla8022(ha)) { |
| qla4_8xxx_idc_lock(ha); |
| qla4_8xxx_clear_drv_active(ha); |
| qla4_8xxx_idc_unlock(ha); |
| } |
| |
| /* Detach interrupts */ |
| if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) |
| qla4xxx_free_irqs(ha); |
| |
| /* free extra memory */ |
| qla4xxx_mem_free(ha); |
| } |
| |
| int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) |
| { |
| int status = 0; |
| uint8_t revision_id; |
| unsigned long mem_base, mem_len, db_base, db_len; |
| struct pci_dev *pdev = ha->pdev; |
| |
| status = pci_request_regions(pdev, DRIVER_NAME); |
| if (status) { |
| printk(KERN_WARNING |
| "scsi(%ld) Failed to reserve PIO regions (%s) " |
| "status=%d\n", ha->host_no, pci_name(pdev), status); |
| goto iospace_error_exit; |
| } |
| |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); |
| DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", |
| __func__, revision_id)); |
| ha->revision_id = revision_id; |
| |
| /* remap phys address */ |
| mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ |
| mem_len = pci_resource_len(pdev, 0); |
| DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", |
| __func__, mem_base, mem_len)); |
| |
| /* mapping of pcibase pointer */ |
| ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); |
| if (!ha->nx_pcibase) { |
| printk(KERN_ERR |
| "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); |
| pci_release_regions(ha->pdev); |
| goto iospace_error_exit; |
| } |
| |
| /* Mapping of IO base pointer, door bell read and write pointer */ |
| |
| /* mapping of IO base pointer */ |
| ha->qla4_8xxx_reg = |
| (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + |
| 0xbc000 + (ha->pdev->devfn << 11)); |
| |
| db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ |
| db_len = pci_resource_len(pdev, 4); |
| |
| ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : |
| QLA82XX_CAM_RAM_DB2); |
| |
| return 0; |
| iospace_error_exit: |
| return -ENOMEM; |
| } |
| |
| /*** |
| * qla4xxx_iospace_config - maps registers |
| * @ha: pointer to adapter structure |
| * |
| * This routines maps HBA's registers from the pci address space |
| * into the kernel virtual address space for memory mapped i/o. |
| **/ |
| int qla4xxx_iospace_config(struct scsi_qla_host *ha) |
| { |
| unsigned long pio, pio_len, pio_flags; |
| unsigned long mmio, mmio_len, mmio_flags; |
| |
| pio = pci_resource_start(ha->pdev, 0); |
| pio_len = pci_resource_len(ha->pdev, 0); |
| pio_flags = pci_resource_flags(ha->pdev, 0); |
| if (pio_flags & IORESOURCE_IO) { |
| if (pio_len < MIN_IOBASE_LEN) { |
| ql4_printk(KERN_WARNING, ha, |
| "Invalid PCI I/O region size\n"); |
| pio = 0; |
| } |
| } else { |
| ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); |
| pio = 0; |
| } |
| |
| /* Use MMIO operations for all accesses. */ |
| mmio = pci_resource_start(ha->pdev, 1); |
| mmio_len = pci_resource_len(ha->pdev, 1); |
| mmio_flags = pci_resource_flags(ha->pdev, 1); |
| |
| if (!(mmio_flags & IORESOURCE_MEM)) { |
| ql4_printk(KERN_ERR, ha, |
| "region #0 not an MMIO resource, aborting\n"); |
| |
| goto iospace_error_exit; |
| } |
| |
| if (mmio_len < MIN_IOBASE_LEN) { |
| ql4_printk(KERN_ERR, ha, |
| "Invalid PCI mem region size, aborting\n"); |
| goto iospace_error_exit; |
| } |
| |
| if (pci_request_regions(ha->pdev, DRIVER_NAME)) { |
| ql4_printk(KERN_WARNING, ha, |
| "Failed to reserve PIO/MMIO regions\n"); |
| |
| goto iospace_error_exit; |
| } |
| |
| ha->pio_address = pio; |
| ha->pio_length = pio_len; |
| ha->reg = ioremap(mmio, MIN_IOBASE_LEN); |
| if (!ha->reg) { |
| ql4_printk(KERN_ERR, ha, |
| "cannot remap MMIO, aborting\n"); |
| |
| goto iospace_error_exit; |
| } |
| |
| return 0; |
| |
| iospace_error_exit: |
| return -ENOMEM; |
| } |
| |
| static struct isp_operations qla4xxx_isp_ops = { |
| .iospace_config = qla4xxx_iospace_config, |
| .pci_config = qla4xxx_pci_config, |
| .disable_intrs = qla4xxx_disable_intrs, |
| .enable_intrs = qla4xxx_enable_intrs, |
| .start_firmware = qla4xxx_start_firmware, |
| .intr_handler = qla4xxx_intr_handler, |
| .interrupt_service_routine = qla4xxx_interrupt_service_routine, |
| .reset_chip = qla4xxx_soft_reset, |
| .reset_firmware = qla4xxx_hw_reset, |
| .queue_iocb = qla4xxx_queue_iocb, |
| .complete_iocb = qla4xxx_complete_iocb, |
| .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, |
| .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, |
| .get_sys_info = qla4xxx_get_sys_info, |
| }; |
| |
| static struct isp_operations qla4_8xxx_isp_ops = { |
| .iospace_config = qla4_8xxx_iospace_config, |
| .pci_config = qla4_8xxx_pci_config, |
| .disable_intrs = qla4_8xxx_disable_intrs, |
| .enable_intrs = qla4_8xxx_enable_intrs, |
| .start_firmware = qla4_8xxx_load_risc, |
| .intr_handler = qla4_8xxx_intr_handler, |
| .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, |
| .reset_chip = qla4_8xxx_isp_reset, |
| .reset_firmware = qla4_8xxx_stop_firmware, |
| .queue_iocb = qla4_8xxx_queue_iocb, |
| .complete_iocb = qla4_8xxx_complete_iocb, |
| .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, |
| .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, |
| .get_sys_info = qla4_8xxx_get_sys_info, |
| }; |
| |
| uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) |
| { |
| return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); |
| } |
| |
| uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) |
| { |
| return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); |
| } |
| |
| uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) |
| { |
| return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); |
| } |
| |
| uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) |
| { |
| return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); |
| } |
| |
| /** |
| * qla4xxx_probe_adapter - callback function to probe HBA |
| * @pdev: pointer to pci_dev structure |
| * @pci_device_id: pointer to pci_device entry |
| * |
| * This routine will probe for Qlogic 4xxx iSCSI host adapters. |
| * It returns zero if successful. It also initializes all data necessary for |
| * the driver. |
| **/ |
| static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| int ret = -ENODEV, status; |
| struct Scsi_Host *host; |
| struct scsi_qla_host *ha; |
| uint8_t init_retry_count = 0; |
| char buf[34]; |
| struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; |
| uint32_t dev_state; |
| |
| if (pci_enable_device(pdev)) |
| return -1; |
| |
| host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); |
| if (host == NULL) { |
| printk(KERN_WARNING |
| "qla4xxx: Couldn't allocate host from scsi layer!\n"); |
| goto probe_disable_device; |
| } |
| |
| /* Clear our data area */ |
| ha = (struct scsi_qla_host *) host->hostdata; |
| memset(ha, 0, sizeof(*ha)); |
| |
| /* Save the information from PCI BIOS. */ |
| ha->pdev = pdev; |
| ha->host = host; |
| ha->host_no = host->host_no; |
| |
| pci_enable_pcie_error_reporting(pdev); |
| |
| /* Setup Runtime configurable options */ |
| if (is_qla8022(ha)) { |
| ha->isp_ops = &qla4_8xxx_isp_ops; |
| rwlock_init(&ha->hw_lock); |
| ha->qdr_sn_window = -1; |
| ha->ddr_mn_window = -1; |
| ha->curr_window = 255; |
| ha->func_num = PCI_FUNC(ha->pdev->devfn); |
| nx_legacy_intr = &legacy_intr[ha->func_num]; |
| ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; |
| ha->nx_legacy_intr.tgt_status_reg = |
| nx_legacy_intr->tgt_status_reg; |
| ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; |
| ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; |
| } else { |
| ha->isp_ops = &qla4xxx_isp_ops; |
| } |
| |
| /* Set EEH reset type to fundamental if required by hba */ |
| if (is_qla8022(ha)) |
| pdev->needs_freset = 1; |
| |
| /* Configure PCI I/O space. */ |
| ret = ha->isp_ops->iospace_config(ha); |
| if (ret) |
| goto probe_failed_ioconfig; |
| |
| ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", |
| pdev->device, pdev->irq, ha->reg); |
| |
| qla4xxx_config_dma_addressing(ha); |
| |
| /* Initialize lists and spinlocks. */ |
| INIT_LIST_HEAD(&ha->ddb_list); |
| INIT_LIST_HEAD(&ha->free_srb_q); |
| |
| mutex_init(&ha->mbox_sem); |
| init_completion(&ha->mbx_intr_comp); |
| |
| spin_lock_init(&ha->hardware_lock); |
| |
| /* Allocate dma buffers */ |
| if (qla4xxx_mem_alloc(ha)) { |
| ql4_printk(KERN_WARNING, ha, |
| "[ERROR] Failed to allocate memory for adapter\n"); |
| |
| ret = -ENOMEM; |
| goto probe_failed; |
| } |
| |
| if (is_qla8022(ha)) |
| (void) qla4_8xxx_get_flash_info(ha); |
| |
| /* |
| * Initialize the Host adapter request/response queues and |
| * firmware |
| * NOTE: interrupts enabled upon successful completion |
| */ |
| status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); |
| while ((!test_bit(AF_ONLINE, &ha->flags)) && |
| init_retry_count++ < MAX_INIT_RETRIES) { |
| |
| if (is_qla8022(ha)) { |
| qla4_8xxx_idc_lock(ha); |
| dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); |
| qla4_8xxx_idc_unlock(ha); |
| if (dev_state == QLA82XX_DEV_FAILED) { |
| ql4_printk(KERN_WARNING, ha, "%s: don't retry " |
| "initialize adapter. H/W is in failed state\n", |
| __func__); |
| break; |
| } |
| } |
| DEBUG2(printk("scsi: %s: retrying adapter initialization " |
| "(%d)\n", __func__, init_retry_count)); |
| |
| if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) |
| continue; |
| |
| status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); |
| } |
| |
| if (!test_bit(AF_ONLINE, &ha->flags)) { |
| ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); |
| |
| if (is_qla8022(ha) && ql4xdontresethba) { |
| /* Put the device in failed state. */ |
| DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); |
| qla4_8xxx_idc_lock(ha); |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, |
| QLA82XX_DEV_FAILED); |
| qla4_8xxx_idc_unlock(ha); |
| } |
| ret = -ENODEV; |
| goto probe_failed; |
| } |
| |
| host->cmd_per_lun = 3; |
| host->max_channel = 0; |
| host->max_lun = MAX_LUNS - 1; |
| host->max_id = MAX_TARGETS; |
| host->max_cmd_len = IOCB_MAX_CDB_LEN; |
| host->can_queue = MAX_SRBS ; |
| host->transportt = qla4xxx_scsi_transport; |
| |
| ret = scsi_init_shared_tag_map(host, MAX_SRBS); |
| if (ret) { |
| ql4_printk(KERN_WARNING, ha, |
| "scsi_init_shared_tag_map failed\n"); |
| goto probe_failed; |
| } |
| |
| /* Startup the kernel thread for this host adapter. */ |
| DEBUG2(printk("scsi: %s: Starting kernel thread for " |
| "qla4xxx_dpc\n", __func__)); |
| sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); |
| ha->dpc_thread = create_singlethread_workqueue(buf); |
| if (!ha->dpc_thread) { |
| ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); |
| ret = -ENODEV; |
| goto probe_failed; |
| } |
| INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
| |
| /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc |
| * (which is called indirectly by qla4xxx_initialize_adapter), |
| * so that irqs will be registered after crbinit but before |
| * mbx_intr_enable. |
| */ |
| if (!is_qla8022(ha)) { |
| ret = qla4xxx_request_irqs(ha); |
| if (ret) { |
| ql4_printk(KERN_WARNING, ha, "Failed to reserve " |
| "interrupt %d already in use.\n", pdev->irq); |
| goto probe_failed; |
| } |
| } |
| |
| pci_save_state(ha->pdev); |
| ha->isp_ops->enable_intrs(ha); |
| |
| /* Start timer thread. */ |
| qla4xxx_start_timer(ha, qla4xxx_timer, 1); |
| |
| set_bit(AF_INIT_DONE, &ha->flags); |
| |
| pci_set_drvdata(pdev, ha); |
| |
| ret = scsi_add_host(host, &pdev->dev); |
| if (ret) |
| goto probe_failed; |
| |
| printk(KERN_INFO |
| " QLogic iSCSI HBA Driver version: %s\n" |
| " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", |
| qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), |
| ha->host_no, ha->firmware_version[0], ha->firmware_version[1], |
| ha->patch_number, ha->build_number); |
| scsi_scan_host(host); |
| return 0; |
| |
| probe_failed: |
| qla4xxx_free_adapter(ha); |
| |
| probe_failed_ioconfig: |
| pci_disable_pcie_error_reporting(pdev); |
| scsi_host_put(ha->host); |
| |
| probe_disable_device: |
| pci_disable_device(pdev); |
| |
| return ret; |
| } |
| |
| /** |
| * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize |
| * @ha: pointer to adapter structure |
| * |
| * Mark the other ISP-4xxx port to indicate that the driver is being removed, |
| * so that the other port will not re-initialize while in the process of |
| * removing the ha due to driver unload or hba hotplug. |
| **/ |
| static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) |
| { |
| struct scsi_qla_host *other_ha = NULL; |
| struct pci_dev *other_pdev = NULL; |
| int fn = ISP4XXX_PCI_FN_2; |
| |
| /*iscsi function numbers for ISP4xxx is 1 and 3*/ |
| if (PCI_FUNC(ha->pdev->devfn) & BIT_1) |
| fn = ISP4XXX_PCI_FN_1; |
| |
| other_pdev = |
| pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), |
| ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), |
| fn)); |
| |
| /* Get other_ha if other_pdev is valid and state is enable*/ |
| if (other_pdev) { |
| if (atomic_read(&other_pdev->enable_cnt)) { |
| other_ha = pci_get_drvdata(other_pdev); |
| if (other_ha) { |
| set_bit(AF_HA_REMOVAL, &other_ha->flags); |
| DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " |
| "Prevent %s reinit\n", __func__, |
| dev_name(&other_ha->pdev->dev))); |
| } |
| } |
| pci_dev_put(other_pdev); |
| } |
| } |
| |
| /** |
| * qla4xxx_remove_adapter - calback function to remove adapter. |
| * @pci_dev: PCI device pointer |
| **/ |
| static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) |
| { |
| struct scsi_qla_host *ha; |
| |
| ha = pci_get_drvdata(pdev); |
| |
| if (!is_qla8022(ha)) |
| qla4xxx_prevent_other_port_reinit(ha); |
| |
| /* remove devs from iscsi_sessions to scsi_devices */ |
| qla4xxx_free_ddb_list(ha); |
| |
| scsi_remove_host(ha->host); |
| |
| qla4xxx_free_adapter(ha); |
| |
| scsi_host_put(ha->host); |
| |
| pci_disable_pcie_error_reporting(pdev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| } |
| |
| /** |
| * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. |
| * @ha: HA context |
| * |
| * At exit, the @ha's flags.enable_64bit_addressing set to indicated |
| * supported addressing method. |
| */ |
| static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
| { |
| int retval; |
| |
| /* Update our PCI device dma_mask for full 64 bit mask */ |
| if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { |
| if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { |
| dev_dbg(&ha->pdev->dev, |
| "Failed to set 64 bit PCI consistent mask; " |
| "using 32 bit.\n"); |
| retval = pci_set_consistent_dma_mask(ha->pdev, |
| DMA_BIT_MASK(32)); |
| } |
| } else |
| retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); |
| } |
| |
| static int qla4xxx_slave_alloc(struct scsi_device *sdev) |
| { |
| struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); |
| struct ddb_entry *ddb = sess->dd_data; |
| int queue_depth = QL4_DEF_QDEPTH; |
| |
| sdev->hostdata = ddb; |
| sdev->tagged_supported = 1; |
| |
| if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU) |
| queue_depth = ql4xmaxqdepth; |
| |
| scsi_activate_tcq(sdev, queue_depth); |
| return 0; |
| } |
| |
| static int qla4xxx_slave_configure(struct scsi_device *sdev) |
| { |
| sdev->tagged_supported = 1; |
| return 0; |
| } |
| |
| static void qla4xxx_slave_destroy(struct scsi_device *sdev) |
| { |
| scsi_deactivate_tcq(sdev, 1); |
| } |
| |
| /** |
| * qla4xxx_del_from_active_array - returns an active srb |
| * @ha: Pointer to host adapter structure. |
| * @index: index into the active_array |
| * |
| * This routine removes and returns the srb at the specified index |
| **/ |
| struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, |
| uint32_t index) |
| { |
| struct srb *srb = NULL; |
| struct scsi_cmnd *cmd = NULL; |
| |
| cmd = scsi_host_find_tag(ha->host, index); |
| if (!cmd) |
| return srb; |
| |
| srb = (struct srb *)CMD_SP(cmd); |
| if (!srb) |
| return srb; |
| |
| /* update counters */ |
| if (srb->flags & SRB_DMA_VALID) { |
| ha->req_q_count += srb->iocb_cnt; |
| ha->iocb_cnt -= srb->iocb_cnt; |
| if (srb->cmd) |
| srb->cmd->host_scribble = |
| (unsigned char *)(unsigned long) MAX_SRBS; |
| } |
| return srb; |
| } |
| |
| /** |
| * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware |
| * @ha: Pointer to host adapter structure. |
| * @cmd: Scsi Command to wait on. |
| * |
| * This routine waits for the command to be returned by the Firmware |
| * for some max time. |
| **/ |
| static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, |
| struct scsi_cmnd *cmd) |
| { |
| int done = 0; |
| struct srb *rp; |
| uint32_t max_wait_time = EH_WAIT_CMD_TOV; |
| int ret = SUCCESS; |
| |
| /* Dont wait on command if PCI error is being handled |
| * by PCI AER driver |
| */ |
| if (unlikely(pci_channel_offline(ha->pdev)) || |
| (test_bit(AF_EEH_BUSY, &ha->flags))) { |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", |
| ha->host_no, __func__); |
| return ret; |
| } |
| |
| do { |
| /* Checking to see if its returned to OS */ |
| rp = (struct srb *) CMD_SP(cmd); |
| if (rp == NULL) { |
| done++; |
| break; |
| } |
| |
| msleep(2000); |
| } while (max_wait_time--); |
| |
| return done; |
| } |
| |
| /** |
| * qla4xxx_wait_for_hba_online - waits for HBA to come online |
| * @ha: Pointer to host adapter structure |
| **/ |
| static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) |
| { |
| unsigned long wait_online; |
| |
| wait_online = jiffies + (HBA_ONLINE_TOV * HZ); |
| while (time_before(jiffies, wait_online)) { |
| |
| if (adapter_up(ha)) |
| return QLA_SUCCESS; |
| |
| msleep(2000); |
| } |
| |
| return QLA_ERROR; |
| } |
| |
| /** |
| * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. |
| * @ha: pointer to HBA |
| * @t: target id |
| * @l: lun id |
| * |
| * This function waits for all outstanding commands to a lun to complete. It |
| * returns 0 if all pending commands are returned and 1 otherwise. |
| **/ |
| static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, |
| struct scsi_target *stgt, |
| struct scsi_device *sdev) |
| { |
| int cnt; |
| int status = 0; |
| struct scsi_cmnd *cmd; |
| |
| /* |
| * Waiting for all commands for the designated target or dev |
| * in the active array |
| */ |
| for (cnt = 0; cnt < ha->host->can_queue; cnt++) { |
| cmd = scsi_host_find_tag(ha->host, cnt); |
| if (cmd && stgt == scsi_target(cmd->device) && |
| (!sdev || sdev == cmd->device)) { |
| if (!qla4xxx_eh_wait_on_command(ha, cmd)) { |
| status++; |
| break; |
| } |
| } |
| } |
| return status; |
| } |
| |
| /** |
| * qla4xxx_eh_abort - callback for abort task. |
| * @cmd: Pointer to Linux's SCSI command structure |
| * |
| * This routine is called by the Linux OS to abort the specified |
| * command. |
| **/ |
| static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) |
| { |
| struct scsi_qla_host *ha = to_qla_host(cmd->device->host); |
| unsigned int id = cmd->device->id; |
| unsigned int lun = cmd->device->lun; |
| unsigned long serial = cmd->serial_number; |
| unsigned long flags; |
| struct srb *srb = NULL; |
| int ret = SUCCESS; |
| int wait = 0; |
| |
| ql4_printk(KERN_INFO, ha, |
| "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", |
| ha->host_no, id, lun, cmd, serial); |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| srb = (struct srb *) CMD_SP(cmd); |
| if (!srb) { |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| return SUCCESS; |
| } |
| kref_get(&srb->srb_ref); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { |
| DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", |
| ha->host_no, id, lun)); |
| ret = FAILED; |
| } else { |
| DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", |
| ha->host_no, id, lun)); |
| wait = 1; |
| } |
| |
| kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
| |
| /* Wait for command to complete */ |
| if (wait) { |
| if (!qla4xxx_eh_wait_on_command(ha, cmd)) { |
| DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", |
| ha->host_no, id, lun)); |
| ret = FAILED; |
| } |
| } |
| |
| ql4_printk(KERN_INFO, ha, |
| "scsi%ld:%d:%d: Abort command - %s\n", |
| ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); |
| |
| return ret; |
| } |
| |
| /** |
| * qla4xxx_eh_device_reset - callback for target reset. |
| * @cmd: Pointer to Linux's SCSI command structure |
| * |
| * This routine is called by the Linux OS to reset all luns on the |
| * specified target. |
| **/ |
| static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) |
| { |
| struct scsi_qla_host *ha = to_qla_host(cmd->device->host); |
| struct ddb_entry *ddb_entry = cmd->device->hostdata; |
| int ret = FAILED, stat; |
| |
| if (!ddb_entry) |
| return ret; |
| |
| ret = iscsi_block_scsi_eh(cmd); |
| if (ret) |
| return ret; |
| ret = FAILED; |
| |
| ql4_printk(KERN_INFO, ha, |
| "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, |
| cmd->device->channel, cmd->device->id, cmd->device->lun); |
| |
| DEBUG2(printk(KERN_INFO |
| "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," |
| "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, |
| cmd, jiffies, cmd->request->timeout / HZ, |
| ha->dpc_flags, cmd->result, cmd->allowed)); |
| |
| /* FIXME: wait for hba to go online */ |
| stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); |
| if (stat != QLA_SUCCESS) { |
| ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); |
| goto eh_dev_reset_done; |
| } |
| |
| if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
| cmd->device)) { |
| ql4_printk(KERN_INFO, ha, |
| "DEVICE RESET FAILED - waiting for " |
| "commands.\n"); |
| goto eh_dev_reset_done; |
| } |
| |
| /* Send marker. */ |
| if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, |
| MM_LUN_RESET) != QLA_SUCCESS) |
| goto eh_dev_reset_done; |
| |
| ql4_printk(KERN_INFO, ha, |
| "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", |
| ha->host_no, cmd->device->channel, cmd->device->id, |
| cmd->device->lun); |
| |
| ret = SUCCESS; |
| |
| eh_dev_reset_done: |
| |
| return ret; |
| } |
| |
| /** |
| * qla4xxx_eh_target_reset - callback for target reset. |
| * @cmd: Pointer to Linux's SCSI command structure |
| * |
| * This routine is called by the Linux OS to reset the target. |
| **/ |
| static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) |
| { |
| struct scsi_qla_host *ha = to_qla_host(cmd->device->host); |
| struct ddb_entry *ddb_entry = cmd->device->hostdata; |
| int stat, ret; |
| |
| if (!ddb_entry) |
| return FAILED; |
| |
| ret = iscsi_block_scsi_eh(cmd); |
| if (ret) |
| return ret; |
| |
| starget_printk(KERN_INFO, scsi_target(cmd->device), |
| "WARM TARGET RESET ISSUED.\n"); |
| |
| DEBUG2(printk(KERN_INFO |
| "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " |
| "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", |
| ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, |
| ha->dpc_flags, cmd->result, cmd->allowed)); |
| |
| stat = qla4xxx_reset_target(ha, ddb_entry); |
| if (stat != QLA_SUCCESS) { |
| starget_printk(KERN_INFO, scsi_target(cmd->device), |
| "WARM TARGET RESET FAILED.\n"); |
| return FAILED; |
| } |
| |
| if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
| NULL)) { |
| starget_printk(KERN_INFO, scsi_target(cmd->device), |
| "WARM TARGET DEVICE RESET FAILED - " |
| "waiting for commands.\n"); |
| return FAILED; |
| } |
| |
| /* Send marker. */ |
| if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, |
| MM_TGT_WARM_RESET) != QLA_SUCCESS) { |
| starget_printk(KERN_INFO, scsi_target(cmd->device), |
| "WARM TARGET DEVICE RESET FAILED - " |
| "marker iocb failed.\n"); |
| return FAILED; |
| } |
| |
| starget_printk(KERN_INFO, scsi_target(cmd->device), |
| "WARM TARGET RESET SUCCEEDED.\n"); |
| return SUCCESS; |
| } |
| |
| /** |
| * qla4xxx_eh_host_reset - kernel callback |
| * @cmd: Pointer to Linux's SCSI command structure |
| * |
| * This routine is invoked by the Linux kernel to perform fatal error |
| * recovery on the specified adapter. |
| **/ |
| static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) |
| { |
| int return_status = FAILED; |
| struct scsi_qla_host *ha; |
| |
| ha = (struct scsi_qla_host *) cmd->device->host->hostdata; |
| |
| if (ql4xdontresethba) { |
| DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", |
| ha->host_no, __func__)); |
| return FAILED; |
| } |
| |
| ql4_printk(KERN_INFO, ha, |
| "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, |
| cmd->device->channel, cmd->device->id, cmd->device->lun); |
| |
| if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { |
| DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " |
| "DEAD.\n", ha->host_no, cmd->device->channel, |
| __func__)); |
| |
| return FAILED; |
| } |
| |
| if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { |
| if (is_qla8022(ha)) |
| set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
| else |
| set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| } |
| |
| if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) |
| return_status = SUCCESS; |
| |
| ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", |
| return_status == FAILED ? "FAILED" : "SUCCEDED"); |
| |
| return return_status; |
| } |
| |
| /* PCI AER driver recovers from all correctable errors w/o |
| * driver intervention. For uncorrectable errors PCI AER |
| * driver calls the following device driver's callbacks |
| * |
| * - Fatal Errors - link_reset |
| * - Non-Fatal Errors - driver's pci_error_detected() which |
| * returns CAN_RECOVER, NEED_RESET or DISCONNECT. |
| * |
| * PCI AER driver calls |
| * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled |
| * returns RECOVERED or NEED_RESET if fw_hung |
| * NEED_RESET - driver's slot_reset() |
| * DISCONNECT - device is dead & cannot recover |
| * RECOVERED - driver's pci_resume() |
| */ |
| static pci_ers_result_t |
| qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) |
| { |
| struct scsi_qla_host *ha = pci_get_drvdata(pdev); |
| |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", |
| ha->host_no, __func__, state); |
| |
| if (!is_aer_supported(ha)) |
| return PCI_ERS_RESULT_NONE; |
| |
| switch (state) { |
| case pci_channel_io_normal: |
| clear_bit(AF_EEH_BUSY, &ha->flags); |
| return PCI_ERS_RESULT_CAN_RECOVER; |
| case pci_channel_io_frozen: |
| set_bit(AF_EEH_BUSY, &ha->flags); |
| qla4xxx_mailbox_premature_completion(ha); |
| qla4xxx_free_irqs(ha); |
| pci_disable_device(pdev); |
| /* Return back all IOs */ |
| qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
| return PCI_ERS_RESULT_NEED_RESET; |
| case pci_channel_io_perm_failure: |
| set_bit(AF_EEH_BUSY, &ha->flags); |
| set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); |
| qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); |
| return PCI_ERS_RESULT_DISCONNECT; |
| } |
| return PCI_ERS_RESULT_NEED_RESET; |
| } |
| |
| /** |
| * qla4xxx_pci_mmio_enabled() gets called if |
| * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER |
| * and read/write to the device still works. |
| **/ |
| static pci_ers_result_t |
| qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) |
| { |
| struct scsi_qla_host *ha = pci_get_drvdata(pdev); |
| |
| if (!is_aer_supported(ha)) |
| return PCI_ERS_RESULT_NONE; |
| |
| return PCI_ERS_RESULT_RECOVERED; |
| } |
| |
| static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) |
| { |
| uint32_t rval = QLA_ERROR; |
| uint32_t ret = 0; |
| int fn; |
| struct pci_dev *other_pdev = NULL; |
| |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); |
| |
| set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
| |
| if (test_bit(AF_ONLINE, &ha->flags)) { |
| clear_bit(AF_ONLINE, &ha->flags); |
| qla4xxx_mark_all_devices_missing(ha); |
| qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
| } |
| |
| fn = PCI_FUNC(ha->pdev->devfn); |
| while (fn > 0) { |
| fn--; |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " |
| "func %x\n", ha->host_no, __func__, fn); |
| /* Get the pci device given the domain, bus, |
| * slot/function number */ |
| other_pdev = |
| pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), |
| ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), |
| fn)); |
| |
| if (!other_pdev) |
| continue; |
| |
| if (atomic_read(&other_pdev->enable_cnt)) { |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " |
| "func in enabled state%x\n", ha->host_no, |
| __func__, fn); |
| pci_dev_put(other_pdev); |
| break; |
| } |
| pci_dev_put(other_pdev); |
| } |
| |
| /* The first function on the card, the reset owner will |
| * start & initialize the firmware. The other functions |
| * on the card will reset the firmware context |
| */ |
| if (!fn) { |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " |
| "0x%x is the owner\n", ha->host_no, __func__, |
| ha->pdev->devfn); |
| |
| qla4_8xxx_idc_lock(ha); |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, |
| QLA82XX_DEV_COLD); |
| |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, |
| QLA82XX_IDC_VERSION); |
| |
| qla4_8xxx_idc_unlock(ha); |
| clear_bit(AF_FW_RECOVERY, &ha->flags); |
| rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); |
| qla4_8xxx_idc_lock(ha); |
| |
| if (rval != QLA_SUCCESS) { |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " |
| "FAILED\n", ha->host_no, __func__); |
| qla4_8xxx_clear_drv_active(ha); |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, |
| QLA82XX_DEV_FAILED); |
| } else { |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " |
| "READY\n", ha->host_no, __func__); |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, |
| QLA82XX_DEV_READY); |
| /* Clear driver state register */ |
| qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); |
| qla4_8xxx_set_drv_active(ha); |
| ret = qla4xxx_request_irqs(ha); |
| if (ret) { |
| ql4_printk(KERN_WARNING, ha, "Failed to " |
| "reserve interrupt %d already in use.\n", |
| ha->pdev->irq); |
| rval = QLA_ERROR; |
| } else { |
| ha->isp_ops->enable_intrs(ha); |
| rval = QLA_SUCCESS; |
| } |
| } |
| qla4_8xxx_idc_unlock(ha); |
| } else { |
| ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " |
| "the reset owner\n", ha->host_no, __func__, |
| ha->pdev->devfn); |
| if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == |
| QLA82XX_DEV_READY)) { |
| clear_bit(AF_FW_RECOVERY, &ha->flags); |
| rval = qla4xxx_initialize_adapter(ha, |
| PRESERVE_DDB_LIST); |
| if (rval == QLA_SUCCESS) { |
| ret = qla4xxx_request_irqs(ha); |
| if (ret) { |
| ql4_printk(KERN_WARNING, ha, "Failed to" |
| " reserve interrupt %d already in" |
| " use.\n", ha->pdev->irq); |
| rval = QLA_ERROR; |
| } else { |
| ha->isp_ops->enable_intrs(ha); |
| rval = QLA_SUCCESS; |
| } |
| } |
| qla4_8xxx_idc_lock(ha); |
| qla4_8xxx_set_drv_active(ha); |
| qla4_8xxx_idc_unlock(ha); |
| } |
| } |
| clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
| return rval; |
| } |
| |
| static pci_ers_result_t |
| qla4xxx_pci_slot_reset(struct pci_dev *pdev) |
| { |
| pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; |
| struct scsi_qla_host *ha = pci_get_drvdata(pdev); |
| int rc; |
| |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", |
| ha->host_no, __func__); |
| |
| if (!is_aer_supported(ha)) |
| return PCI_ERS_RESULT_NONE; |
| |
| /* Restore the saved state of PCIe device - |
| * BAR registers, PCI Config space, PCIX, MSI, |
| * IOV states |
| */ |
| pci_restore_state(pdev); |
| |
| /* pci_restore_state() clears the saved_state flag of the device |
| * save restored state which resets saved_state flag |
| */ |
| pci_save_state(pdev); |
| |
| /* Initialize device or resume if in suspended state */ |
| rc = pci_enable_device(pdev); |
| if (rc) { |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable " |
| "device after reset\n", ha->host_no, __func__); |
| goto exit_slot_reset; |
| } |
| |
| ha->isp_ops->disable_intrs(ha); |
| |
| if (is_qla8022(ha)) { |
| if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { |
| ret = PCI_ERS_RESULT_RECOVERED; |
| goto exit_slot_reset; |
| } else |
| goto exit_slot_reset; |
| } |
| |
| exit_slot_reset: |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" |
| "device after reset\n", ha->host_no, __func__, ret); |
| return ret; |
| } |
| |
| static void |
| qla4xxx_pci_resume(struct pci_dev *pdev) |
| { |
| struct scsi_qla_host *ha = pci_get_drvdata(pdev); |
| int ret; |
| |
| ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", |
| ha->host_no, __func__); |
| |
| ret = qla4xxx_wait_for_hba_online(ha); |
| if (ret != QLA_SUCCESS) { |
| ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " |
| "resume I/O from slot/link_reset\n", ha->host_no, |
| __func__); |
| } |
| |
| pci_cleanup_aer_uncorrect_error_status(pdev); |
| clear_bit(AF_EEH_BUSY, &ha->flags); |
| } |
| |
| static struct pci_error_handlers qla4xxx_err_handler = { |
| .error_detected = qla4xxx_pci_error_detected, |
| .mmio_enabled = qla4xxx_pci_mmio_enabled, |
| .slot_reset = qla4xxx_pci_slot_reset, |
| .resume = qla4xxx_pci_resume, |
| }; |
| |
| static struct pci_device_id qla4xxx_pci_tbl[] = { |
| { |
| .vendor = PCI_VENDOR_ID_QLOGIC, |
| .device = PCI_DEVICE_ID_QLOGIC_ISP4010, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| }, |
| { |
| .vendor = PCI_VENDOR_ID_QLOGIC, |
| .device = PCI_DEVICE_ID_QLOGIC_ISP4022, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| }, |
| { |
| .vendor = PCI_VENDOR_ID_QLOGIC, |
| .device = PCI_DEVICE_ID_QLOGIC_ISP4032, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| }, |
| { |
| .vendor = PCI_VENDOR_ID_QLOGIC, |
| .device = PCI_DEVICE_ID_QLOGIC_ISP8022, |
| .subvendor = PCI_ANY_ID, |
| .subdevice = PCI_ANY_ID, |
| }, |
| {0, 0}, |
| }; |
| MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); |
| |
| static struct pci_driver qla4xxx_pci_driver = { |
| .name = DRIVER_NAME, |
| .id_table = qla4xxx_pci_tbl, |
| .probe = qla4xxx_probe_adapter, |
| .remove = qla4xxx_remove_adapter, |
| .err_handler = &qla4xxx_err_handler, |
| }; |
| |
| static int __init qla4xxx_module_init(void) |
| { |
| int ret; |
| |
| /* Allocate cache for SRBs. */ |
| srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, |
| SLAB_HWCACHE_ALIGN, NULL); |
| if (srb_cachep == NULL) { |
| printk(KERN_ERR |
| "%s: Unable to allocate SRB cache..." |
| "Failing load!\n", DRIVER_NAME); |
| ret = -ENOMEM; |
| goto no_srp_cache; |
| } |
| |
| /* Derive version string. */ |
| strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); |
| if (ql4xextended_error_logging) |
| strcat(qla4xxx_version_str, "-debug"); |
| |
| qla4xxx_scsi_transport = |
| iscsi_register_transport(&qla4xxx_iscsi_transport); |
| if (!qla4xxx_scsi_transport){ |
| ret = -ENODEV; |
| goto release_srb_cache; |
| } |
| |
| ret = pci_register_driver(&qla4xxx_pci_driver); |
| if (ret) |
| goto unregister_transport; |
| |
| printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); |
| return 0; |
| |
| unregister_transport: |
| iscsi_unregister_transport(&qla4xxx_iscsi_transport); |
| release_srb_cache: |
| kmem_cache_destroy(srb_cachep); |
| no_srp_cache: |
| return ret; |
| } |
| |
| static void __exit qla4xxx_module_exit(void) |
| { |
| pci_unregister_driver(&qla4xxx_pci_driver); |
| iscsi_unregister_transport(&qla4xxx_iscsi_transport); |
| kmem_cache_destroy(srb_cachep); |
| } |
| |
| module_init(qla4xxx_module_init); |
| module_exit(qla4xxx_module_exit); |
| |
| MODULE_AUTHOR("QLogic Corporation"); |
| MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |