diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_isr.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_isr.c | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c new file mode 100644 index 00000000000000..b584317608d1a8 --- /dev/null +++ b/drivers/scsi/qla4xxx/ql4_isr.c @@ -0,0 +1,797 @@ +/* + * QLogic iSCSI HBA Driver + * Copyright (c) 2003-2006 QLogic Corporation + * + * See LICENSE.qla4xxx for copyright and licensing details. + */ + +#include "ql4_def.h" + +/** + * qla2x00_process_completed_request() - Process a Fast Post response. + * @ha: SCSI driver HA context + * @index: SRB index + **/ +static void qla4xxx_process_completed_request(struct scsi_qla_host *ha, + uint32_t index) +{ + struct srb *srb; + + srb = qla4xxx_del_from_active_array(ha, index); + if (srb) { + /* Save ISP completion status */ + srb->cmd->result = DID_OK << 16; + qla4xxx_srb_compl(ha, srb); + } else { + DEBUG2(printk("scsi%ld: Invalid ISP SCSI completion handle = " + "%d\n", ha->host_no, index)); + set_bit(DPC_RESET_HA, &ha->dpc_flags); + } +} + +/** + * qla4xxx_status_entry - processes status IOCBs + * @ha: Pointer to host adapter structure. + * @sts_entry: Pointer to status entry structure. + **/ +static void qla4xxx_status_entry(struct scsi_qla_host *ha, + struct status_entry *sts_entry) +{ + uint8_t scsi_status; + struct scsi_cmnd *cmd; + struct srb *srb; + struct ddb_entry *ddb_entry; + uint32_t residual; + uint16_t sensebytecnt; + + if (sts_entry->completionStatus == SCS_COMPLETE && + sts_entry->scsiStatus == 0) { + qla4xxx_process_completed_request(ha, + le32_to_cpu(sts_entry-> + handle)); + return; + } + + srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle)); + if (!srb) { + /* FIXMEdg: Don't we need to reset ISP in this case??? */ + DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid " + "handle 0x%x, sp=%p. This cmd may have already " + "been completed.\n", ha->host_no, __func__, + le32_to_cpu(sts_entry->handle), srb)); + return; + } + + cmd = srb->cmd; + if (cmd == NULL) { + DEBUG2(printk("scsi%ld: %s: Command already returned back to " + "OS pkt->handle=%d srb=%p srb->state:%d\n", + ha->host_no, __func__, sts_entry->handle, + srb, srb->state)); + dev_warn(&ha->pdev->dev, "Command is NULL:" + " already returned to OS (srb=%p)\n", srb); + return; + } + + ddb_entry = srb->ddb; + if (ddb_entry == NULL) { + cmd->result = DID_NO_CONNECT << 16; + goto status_entry_exit; + } + + residual = le32_to_cpu(sts_entry->residualByteCnt); + + /* Translate ISP error to a Linux SCSI error. */ + scsi_status = sts_entry->scsiStatus; + switch (sts_entry->completionStatus) { + case SCS_COMPLETE: + if (scsi_status == 0) { + cmd->result = DID_OK << 16; + break; + } + + if (sts_entry->iscsiFlags & + (ISCSI_FLAG_RESIDUAL_OVER|ISCSI_FLAG_RESIDUAL_UNDER)) + cmd->resid = residual; + + cmd->result = DID_OK << 16 | scsi_status; + + if (scsi_status != SCSI_CHECK_CONDITION) + break; + + /* Copy Sense Data into sense buffer. */ + memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); + + sensebytecnt = le16_to_cpu(sts_entry->senseDataByteCnt); + if (sensebytecnt == 0) + break; + + memcpy(cmd->sense_buffer, sts_entry->senseData, + min(sensebytecnt, + (uint16_t) sizeof(cmd->sense_buffer))); + + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, " + "ASC/ASCQ = %02x/%02x\n", ha->host_no, + cmd->device->channel, cmd->device->id, + cmd->device->lun, __func__, + sts_entry->senseData[2] & 0x0f, + sts_entry->senseData[12], + sts_entry->senseData[13])); + + srb->flags |= SRB_GOT_SENSE; + break; + + case SCS_INCOMPLETE: + /* Always set the status to DID_ERROR, since + * all conditions result in that status anyway */ + cmd->result = DID_ERROR << 16; + break; + + case SCS_RESET_OCCURRED: + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n", + ha->host_no, cmd->device->channel, + cmd->device->id, cmd->device->lun, __func__)); + + cmd->result = DID_RESET << 16; + break; + + case SCS_ABORTED: + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n", + ha->host_no, cmd->device->channel, + cmd->device->id, cmd->device->lun, __func__)); + + cmd->result = DID_RESET << 16; + break; + + case SCS_TIMEOUT: + DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n", + ha->host_no, cmd->device->channel, + cmd->device->id, cmd->device->lun)); + + cmd->result = DID_BUS_BUSY << 16; + + /* + * Mark device missing so that we won't continue to send + * I/O to this device. We should get a ddb state change + * AEN soon. + */ + if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) + qla4xxx_mark_device_missing(ha, ddb_entry); + break; + + case SCS_DATA_UNDERRUN: + case SCS_DATA_OVERRUN: + if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) { + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun, " + "residual = 0x%x\n", ha->host_no, + cmd->device->channel, cmd->device->id, + cmd->device->lun, __func__, residual)); + + cmd->result = DID_ERROR << 16; + break; + } + + if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) == 0) { + /* + * Firmware detected a SCSI transport underrun + * condition + */ + cmd->resid = residual; + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: UNDERRUN status " + "detected, xferlen = 0x%x, residual = " + "0x%x\n", + ha->host_no, cmd->device->channel, + cmd->device->id, + cmd->device->lun, __func__, + cmd->request_bufflen, + residual)); + } + + /* + * If there is scsi_status, it takes precedense over + * underflow condition. + */ + if (scsi_status != 0) { + cmd->result = DID_OK << 16 | scsi_status; + + if (scsi_status != SCSI_CHECK_CONDITION) + break; + + /* Copy Sense Data into sense buffer. */ + memset(cmd->sense_buffer, 0, + sizeof(cmd->sense_buffer)); + + sensebytecnt = + le16_to_cpu(sts_entry->senseDataByteCnt); + if (sensebytecnt == 0) + break; + + memcpy(cmd->sense_buffer, sts_entry->senseData, + min(sensebytecnt, + (uint16_t) sizeof(cmd->sense_buffer))); + + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, " + "ASC/ASCQ = %02x/%02x\n", ha->host_no, + cmd->device->channel, cmd->device->id, + cmd->device->lun, __func__, + sts_entry->senseData[2] & 0x0f, + sts_entry->senseData[12], + sts_entry->senseData[13])); + } else { + /* + * If RISC reports underrun and target does not + * report it then we must have a lost frame, so + * tell upper layer to retry it by reporting a + * bus busy. + */ + if ((sts_entry->iscsiFlags & + ISCSI_FLAG_RESIDUAL_UNDER) == 0) { + cmd->result = DID_BUS_BUSY << 16; + } else if ((cmd->request_bufflen - residual) < + cmd->underflow) { + /* + * Handle mid-layer underflow??? + * + * For kernels less than 2.4, the driver must + * return an error if an underflow is detected. + * For kernels equal-to and above 2.4, the + * mid-layer will appearantly handle the + * underflow by detecting the residual count -- + * unfortunately, we do not see where this is + * actually being done. In the interim, we + * will return DID_ERROR. + */ + DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " + "Mid-layer Data underrun, " + "xferlen = 0x%x, " + "residual = 0x%x\n", ha->host_no, + cmd->device->channel, + cmd->device->id, + cmd->device->lun, __func__, + cmd->request_bufflen, residual)); + + cmd->result = DID_ERROR << 16; + } else { + cmd->result = DID_OK << 16; + } + } + break; + + case SCS_DEVICE_LOGGED_OUT: + case SCS_DEVICE_UNAVAILABLE: + /* + * Mark device missing so that we won't continue to + * send I/O to this device. We should get a ddb + * state change AEN soon. + */ + if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) + qla4xxx_mark_device_missing(ha, ddb_entry); + + cmd->result = DID_BUS_BUSY << 16; + break; + + case SCS_QUEUE_FULL: + /* + * SCSI Mid-Layer handles device queue full + */ + cmd->result = DID_OK << 16 | sts_entry->scsiStatus; + DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected " + "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x," + " iResp=%02x\n", ha->host_no, cmd->device->id, + cmd->device->lun, __func__, + sts_entry->completionStatus, + sts_entry->scsiStatus, sts_entry->state_flags, + sts_entry->iscsiFlags, + sts_entry->iscsiResponse)); + break; + + default: + cmd->result = DID_ERROR << 16; + break; + } + +status_entry_exit: + + /* complete the request */ + srb->cc_stat = sts_entry->completionStatus; + qla4xxx_srb_compl(ha, srb); +} + +/** + * qla4xxx_process_response_queue - process response queue completions + * @ha: Pointer to host adapter structure. + * + * This routine process response queue completions in interrupt context. + * Hardware_lock locked upon entry + **/ +static void qla4xxx_process_response_queue(struct scsi_qla_host * ha) +{ + uint32_t count = 0; + struct srb *srb = NULL; + struct status_entry *sts_entry; + + /* Process all responses from response queue */ + while ((ha->response_in = + (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in)) != + ha->response_out) { + sts_entry = (struct status_entry *) ha->response_ptr; + count++; + + /* Advance pointers for next entry */ + if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) { + ha->response_out = 0; + ha->response_ptr = ha->response_ring; + } else { + ha->response_out++; + ha->response_ptr++; + } + + /* process entry */ + switch (sts_entry->hdr.entryType) { + case ET_STATUS: + /* + * Common status - Single completion posted in single + * IOSB. + */ + qla4xxx_status_entry(ha, sts_entry); + break; + + case ET_PASSTHRU_STATUS: + break; + + case ET_STATUS_CONTINUATION: + /* Just throw away the status continuation entries */ + DEBUG2(printk("scsi%ld: %s: Status Continuation entry " + "- ignoring\n", ha->host_no, __func__)); + break; + + case ET_COMMAND: + /* ISP device queue is full. Command not + * accepted by ISP. Queue command for + * later */ + + srb = qla4xxx_del_from_active_array(ha, + le32_to_cpu(sts_entry-> + handle)); + if (srb == NULL) + goto exit_prq_invalid_handle; + + DEBUG2(printk("scsi%ld: %s: FW device queue full, " + "srb %p\n", ha->host_no, __func__, srb)); + + /* ETRY normally by sending it back with + * DID_BUS_BUSY */ + srb->cmd->result = DID_BUS_BUSY << 16; + qla4xxx_srb_compl(ha, srb); + break; + + case ET_CONTINUE: + /* Just throw away the continuation entries */ + DEBUG2(printk("scsi%ld: %s: Continuation entry - " + "ignoring\n", ha->host_no, __func__)); + break; + + default: + /* + * Invalid entry in response queue, reset RISC + * firmware. + */ + DEBUG2(printk("scsi%ld: %s: Invalid entry %x in " + "response queue \n", ha->host_no, + __func__, + sts_entry->hdr.entryType)); + goto exit_prq_error; + } + } + + /* + * Done with responses, update the ISP For QLA4010, this also clears + * the interrupt. + */ + writel(ha->response_out, &ha->reg->rsp_q_out); + readl(&ha->reg->rsp_q_out); + + return; + +exit_prq_invalid_handle: + DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n", + ha->host_no, __func__, srb, sts_entry->hdr.entryType, + sts_entry->completionStatus)); + +exit_prq_error: + writel(ha->response_out, &ha->reg->rsp_q_out); + readl(&ha->reg->rsp_q_out); + + set_bit(DPC_RESET_HA, &ha->dpc_flags); +} + +/** + * qla4xxx_isr_decode_mailbox - decodes mailbox status + * @ha: Pointer to host adapter structure. + * @mailbox_status: Mailbox status. + * + * This routine decodes the mailbox status during the ISR. + * Hardware_lock locked upon entry. runs in interrupt context. + **/ +static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, + uint32_t mbox_status) +{ + int i; + + if ((mbox_status == MBOX_STS_BUSY) || + (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) || + (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) { + ha->mbox_status[0] = mbox_status; + + if (test_bit(AF_MBOX_COMMAND, &ha->flags)) { + /* + * Copy all mailbox registers to a temporary + * location and set mailbox command done flag + */ + for (i = 1; i < ha->mbox_status_count; i++) + ha->mbox_status[i] = + readl(&ha->reg->mailbox[i]); + + set_bit(AF_MBOX_COMMAND_DONE, &ha->flags); + wake_up(&ha->mailbox_wait_queue); + } + } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) { + /* Immediately process the AENs that don't require much work. + * Only queue the database_changed AENs */ + switch (mbox_status) { + case MBOX_ASTS_SYSTEM_ERROR: + /* Log Mailbox registers */ + if (ql4xdontresethba) { + DEBUG2(printk("%s:Dont Reset HBA\n", + __func__)); + } else { + set_bit(AF_GET_CRASH_RECORD, &ha->flags); + set_bit(DPC_RESET_HA, &ha->dpc_flags); + } + break; + + case MBOX_ASTS_REQUEST_TRANSFER_ERROR: + case MBOX_ASTS_RESPONSE_TRANSFER_ERROR: + case MBOX_ASTS_NVRAM_INVALID: + case MBOX_ASTS_IP_ADDRESS_CHANGED: + case MBOX_ASTS_DHCP_LEASE_EXPIRED: + DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, " + "Reset HA\n", ha->host_no, mbox_status)); + set_bit(DPC_RESET_HA, &ha->dpc_flags); + break; + + case MBOX_ASTS_LINK_UP: + DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK UP\n", + ha->host_no, mbox_status)); + set_bit(AF_LINK_UP, &ha->flags); + break; + + case MBOX_ASTS_LINK_DOWN: + DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK DOWN\n", + ha->host_no, mbox_status)); + clear_bit(AF_LINK_UP, &ha->flags); + break; + + case MBOX_ASTS_HEARTBEAT: + ha->seconds_since_last_heartbeat = 0; + break; + + case MBOX_ASTS_DHCP_LEASE_ACQUIRED: + DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE " + "ACQUIRED\n", ha->host_no, mbox_status)); + set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); + break; + + case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM: + case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target + * mode + * only */ + case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */ + case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR: + case MBOX_ASTS_SUBNET_STATE_CHANGE: + /* No action */ + DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no, + mbox_status)); + break; + + case MBOX_ASTS_MAC_ADDRESS_CHANGED: + case MBOX_ASTS_DNS: + /* No action */ + DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, " + "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n", + ha->host_no, mbox_status, + readl(&ha->reg->mailbox[1]), + readl(&ha->reg->mailbox[2]))); + break; + + case MBOX_ASTS_SELF_TEST_FAILED: + case MBOX_ASTS_LOGIN_FAILED: + /* No action */ + DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, " + "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n", + ha->host_no, mbox_status, + readl(&ha->reg->mailbox[1]), + readl(&ha->reg->mailbox[2]), + readl(&ha->reg->mailbox[3]))); + break; + + case MBOX_ASTS_DATABASE_CHANGED: + /* Queue AEN information and process it in the DPC + * routine */ + if (ha->aen_q_count > 0) { + /* advance pointer */ + if (ha->aen_in == (MAX_AEN_ENTRIES - 1)) + ha->aen_in = 0; + else + ha->aen_in++; + + /* decrement available counter */ + ha->aen_q_count--; + + for (i = 1; i < MBOX_AEN_REG_COUNT; i++) + ha->aen_q[ha->aen_in].mbox_sts[i] = + readl(&ha->reg->mailbox[i]); + + ha->aen_q[ha->aen_in].mbox_sts[0] = mbox_status; + + /* print debug message */ + DEBUG2(printk("scsi%ld: AEN[%d] %04x queued" + " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n", + ha->host_no, ha->aen_in, + mbox_status, + ha->aen_q[ha->aen_in].mbox_sts[1], + ha->aen_q[ha->aen_in].mbox_sts[2], + ha->aen_q[ha->aen_in].mbox_sts[3], + ha->aen_q[ha->aen_in]. mbox_sts[4])); + + /* The DPC routine will process the aen */ + set_bit(DPC_AEN, &ha->dpc_flags); + } else { + DEBUG2(printk("scsi%ld: %s: aen %04x, queue " + "overflowed! AEN LOST!!\n", + ha->host_no, __func__, + mbox_status)); + + DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n", + ha->host_no)); + + for (i = 0; i < MAX_AEN_ENTRIES; i++) { + DEBUG2(printk("AEN[%d] %04x %04x %04x " + "%04x\n", i, + ha->aen_q[i].mbox_sts[0], + ha->aen_q[i].mbox_sts[1], + ha->aen_q[i].mbox_sts[2], + ha->aen_q[i].mbox_sts[3])); + } + } + break; + + default: + DEBUG2(printk(KERN_WARNING + "scsi%ld: AEN %04x UNKNOWN\n", + ha->host_no, mbox_status)); + break; + } + } else { + DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n", + ha->host_no, mbox_status)); + + ha->mbox_status[0] = mbox_status; + } +} + +/** + * qla4xxx_interrupt_service_routine - isr + * @ha: pointer to host adapter structure. + * + * This is the main interrupt service routine. + * hardware_lock locked upon entry. runs in interrupt context. + **/ +void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha, + uint32_t intr_status) +{ + /* Process response queue interrupt. */ + if (intr_status & CSR_SCSI_COMPLETION_INTR) + qla4xxx_process_response_queue(ha); + + /* Process mailbox/asynch event interrupt.*/ + if (intr_status & CSR_SCSI_PROCESSOR_INTR) { + qla4xxx_isr_decode_mailbox(ha, + readl(&ha->reg->mailbox[0])); + + /* Clear Mailbox Interrupt */ + writel(set_rmask(CSR_SCSI_PROCESSOR_INTR), + &ha->reg->ctrl_status); + readl(&ha->reg->ctrl_status); + } +} + +/** + * qla4xxx_intr_handler - hardware interrupt handler. + * @irq: Unused + * @dev_id: Pointer to host adapter structure + * @regs: Unused + **/ +irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + struct scsi_qla_host *ha; + uint32_t intr_status; + unsigned long flags = 0; + uint8_t reqs_count = 0; + + ha = (struct scsi_qla_host *) dev_id; + if (!ha) { + DEBUG2(printk(KERN_INFO + "qla4xxx: Interrupt with NULL host ptr\n")); + return IRQ_NONE; + } + + spin_lock_irqsave(&ha->hardware_lock, flags); + + /* + * Repeatedly service interrupts up to a maximum of + * MAX_REQS_SERVICED_PER_INTR + */ + while (1) { + /* + * Read interrupt status + */ + if (le32_to_cpu(ha->shadow_regs->rsp_q_in) != + ha->response_out) + intr_status = CSR_SCSI_COMPLETION_INTR; + else + intr_status = readl(&ha->reg->ctrl_status); + + if ((intr_status & + (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == + 0) { + if (reqs_count == 0) + ha->spurious_int_count++; + break; + } + + if (intr_status & CSR_FATAL_ERROR) { + DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, " + "Status 0x%04x\n", ha->host_no, + readl(isp_port_error_status (ha)))); + + /* Issue Soft Reset to clear this error condition. + * This will prevent the RISC from repeatedly + * interrupting the driver; thus, allowing the DPC to + * get scheduled to continue error recovery. + * NOTE: Disabling RISC interrupts does not work in + * this case, as CSR_FATAL_ERROR overrides + * CSR_SCSI_INTR_ENABLE */ + if ((readl(&ha->reg->ctrl_status) & + CSR_SCSI_RESET_INTR) == 0) { + writel(set_rmask(CSR_SOFT_RESET), + &ha->reg->ctrl_status); + readl(&ha->reg->ctrl_status); + } + + writel(set_rmask(CSR_FATAL_ERROR), + &ha->reg->ctrl_status); + readl(&ha->reg->ctrl_status); + + __qla4xxx_disable_intrs(ha); + + set_bit(DPC_RESET_HA, &ha->dpc_flags); + + break; + } else if (intr_status & CSR_SCSI_RESET_INTR) { + clear_bit(AF_ONLINE, &ha->flags); + __qla4xxx_disable_intrs(ha); + + writel(set_rmask(CSR_SCSI_RESET_INTR), + &ha->reg->ctrl_status); + readl(&ha->reg->ctrl_status); + + set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); + + break; + } else if (intr_status & INTR_PENDING) { + qla4xxx_interrupt_service_routine(ha, intr_status); + ha->total_io_count++; + if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) + break; + + intr_status = 0; + } + } + + spin_unlock_irqrestore(&ha->hardware_lock, flags); + + return IRQ_HANDLED; +} + +/** + * qla4xxx_process_aen - processes AENs generated by firmware + * @ha: pointer to host adapter structure. + * @process_aen: type of AENs to process + * + * Processes specific types of Asynchronous Events generated by firmware. + * The type of AENs to process is specified by process_aen and can be + * PROCESS_ALL_AENS 0 + * FLUSH_DDB_CHANGED_AENS 1 + * RELOGIN_DDB_CHANGED_AENS 2 + **/ +void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen) +{ + uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; + struct aen *aen; + int i; + unsigned long flags; + + spin_lock_irqsave(&ha->hardware_lock, flags); + while (ha->aen_out != ha->aen_in) { + /* Advance pointers for next entry */ + if (ha->aen_out == (MAX_AEN_ENTRIES - 1)) + ha->aen_out = 0; + else + ha->aen_out++; + + ha->aen_q_count++; + aen = &ha->aen_q[ha->aen_out]; + + /* copy aen information to local structure */ + for (i = 0; i < MBOX_AEN_REG_COUNT; i++) + mbox_sts[i] = aen->mbox_sts[i]; + + spin_unlock_irqrestore(&ha->hardware_lock, flags); + + DEBUG(printk("scsi%ld: AEN[%d] %04x, index [%d] state=%04x " + "mod=%x conerr=%08x \n", ha->host_no, ha->aen_out, + mbox_sts[0], mbox_sts[2], mbox_sts[3], + mbox_sts[1], mbox_sts[4])); + + switch (mbox_sts[0]) { + case MBOX_ASTS_DATABASE_CHANGED: + if (process_aen == FLUSH_DDB_CHANGED_AENS) { + DEBUG2(printk("scsi%ld: AEN[%d] %04x, index " + "[%d] state=%04x FLUSHED!\n", + ha->host_no, ha->aen_out, + mbox_sts[0], mbox_sts[2], + mbox_sts[3])); + break; + } else if (process_aen == RELOGIN_DDB_CHANGED_AENS) { + /* for use during init time, we only want to + * relogin non-active ddbs */ + struct ddb_entry *ddb_entry; + + ddb_entry = + /* FIXME: name length? */ + qla4xxx_lookup_ddb_by_fw_index(ha, + mbox_sts[2]); + if (!ddb_entry) + break; + + ddb_entry->dev_scan_wait_to_complete_relogin = + 0; + ddb_entry->dev_scan_wait_to_start_relogin = + jiffies + + ((ddb_entry->default_time2wait + + 4) * HZ); + + DEBUG2(printk("scsi%ld: ddb index [%d] initate" + " RELOGIN after %d seconds\n", + ha->host_no, + ddb_entry->fw_ddb_index, + ddb_entry->default_time2wait + + 4)); + break; + } + + if (mbox_sts[1] == 0) { /* Global DB change. */ + qla4xxx_reinitialize_ddb_list(ha); + } else if (mbox_sts[1] == 1) { /* Specific device. */ + qla4xxx_process_ddb_changed(ha, mbox_sts[2], + mbox_sts[3]); + } + break; + } + spin_lock_irqsave(&ha->hardware_lock, flags); + } + spin_unlock_irqrestore(&ha->hardware_lock, flags); + +} + |