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![Karen Higgins](/assets/img/avatar_default.png)
remove ha flag AF_HBA_GOING_AWAY and added flag AF_HA_REMOVAL to 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. Signed-off-by: Karen Higgins <karen.higgins@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
1104 lines
30 KiB
C
1104 lines
30 KiB
C
/*
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* QLogic iSCSI HBA Driver
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* Copyright (c) 2003-2010 QLogic Corporation
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*
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* See LICENSE.qla4xxx for copyright and licensing details.
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*/
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#include "ql4_def.h"
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#include "ql4_glbl.h"
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#include "ql4_dbg.h"
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#include "ql4_inline.h"
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/**
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* qla4xxx_copy_sense - copy sense data into cmd sense buffer
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* @ha: Pointer to host adapter structure.
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* @sts_entry: Pointer to status entry structure.
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* @srb: Pointer to srb structure.
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**/
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static void qla4xxx_copy_sense(struct scsi_qla_host *ha,
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struct status_entry *sts_entry,
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struct srb *srb)
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{
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struct scsi_cmnd *cmd = srb->cmd;
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uint16_t sense_len;
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memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
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sense_len = le16_to_cpu(sts_entry->senseDataByteCnt);
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if (sense_len == 0)
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return;
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/* Save total available sense length,
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* not to exceed cmd's sense buffer size */
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sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE);
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srb->req_sense_ptr = cmd->sense_buffer;
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srb->req_sense_len = sense_len;
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/* Copy sense from sts_entry pkt */
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sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN);
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memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len);
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DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, "
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"ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no,
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cmd->device->channel, cmd->device->id,
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cmd->device->lun, __func__,
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sts_entry->senseData[2] & 0x0f,
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sts_entry->senseData[7],
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sts_entry->senseData[12],
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sts_entry->senseData[13]));
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DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len));
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srb->flags |= SRB_GOT_SENSE;
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/* Update srb, in case a sts_cont pkt follows */
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srb->req_sense_ptr += sense_len;
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srb->req_sense_len -= sense_len;
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if (srb->req_sense_len != 0)
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ha->status_srb = srb;
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else
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ha->status_srb = NULL;
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}
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/**
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* qla4xxx_status_cont_entry - Process a Status Continuations entry.
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* @ha: SCSI driver HA context
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* @sts_cont: Entry pointer
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*
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* Extended sense data.
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*/
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static void
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qla4xxx_status_cont_entry(struct scsi_qla_host *ha,
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struct status_cont_entry *sts_cont)
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{
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struct srb *srb = ha->status_srb;
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struct scsi_cmnd *cmd;
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uint16_t sense_len;
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if (srb == NULL)
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return;
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cmd = srb->cmd;
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if (cmd == NULL) {
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DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned "
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"back to OS srb=%p srb->state:%d\n", ha->host_no,
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__func__, srb, srb->state));
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ha->status_srb = NULL;
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return;
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}
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/* Copy sense data. */
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sense_len = min_t(uint16_t, srb->req_sense_len,
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IOCB_MAX_EXT_SENSEDATA_LEN);
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memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len);
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DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len));
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srb->req_sense_ptr += sense_len;
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srb->req_sense_len -= sense_len;
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/* Place command on done queue. */
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if (srb->req_sense_len == 0) {
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kref_put(&srb->srb_ref, qla4xxx_srb_compl);
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ha->status_srb = NULL;
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}
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}
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/**
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* qla4xxx_status_entry - processes status IOCBs
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* @ha: Pointer to host adapter structure.
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* @sts_entry: Pointer to status entry structure.
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**/
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static void qla4xxx_status_entry(struct scsi_qla_host *ha,
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struct status_entry *sts_entry)
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{
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uint8_t scsi_status;
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struct scsi_cmnd *cmd;
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struct srb *srb;
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struct ddb_entry *ddb_entry;
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uint32_t residual;
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srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
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if (!srb) {
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DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid "
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"handle 0x%x, sp=%p. This cmd may have already "
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"been completed.\n", ha->host_no, __func__,
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le32_to_cpu(sts_entry->handle), srb));
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ql4_printk(KERN_WARNING, ha, "%s invalid status entry:"
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" handle=0x%0x\n", __func__, sts_entry->handle);
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set_bit(DPC_RESET_HA, &ha->dpc_flags);
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return;
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}
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cmd = srb->cmd;
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if (cmd == NULL) {
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DEBUG2(printk("scsi%ld: %s: Command already returned back to "
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"OS pkt->handle=%d srb=%p srb->state:%d\n",
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ha->host_no, __func__, sts_entry->handle,
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srb, srb->state));
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ql4_printk(KERN_WARNING, ha, "Command is NULL:"
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" already returned to OS (srb=%p)\n", srb);
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return;
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}
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ddb_entry = srb->ddb;
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if (ddb_entry == NULL) {
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cmd->result = DID_NO_CONNECT << 16;
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goto status_entry_exit;
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}
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residual = le32_to_cpu(sts_entry->residualByteCnt);
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/* Translate ISP error to a Linux SCSI error. */
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scsi_status = sts_entry->scsiStatus;
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switch (sts_entry->completionStatus) {
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case SCS_COMPLETE:
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if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
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cmd->result = DID_ERROR << 16;
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break;
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}
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if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) {
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scsi_set_resid(cmd, residual);
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if (!scsi_status && ((scsi_bufflen(cmd) - residual) <
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cmd->underflow)) {
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cmd->result = DID_ERROR << 16;
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DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
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"Mid-layer Data underrun0, "
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"xferlen = 0x%x, "
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"residual = 0x%x\n", ha->host_no,
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cmd->device->channel,
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cmd->device->id,
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cmd->device->lun, __func__,
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scsi_bufflen(cmd), residual));
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break;
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}
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}
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cmd->result = DID_OK << 16 | scsi_status;
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if (scsi_status != SCSI_CHECK_CONDITION)
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break;
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/* Copy Sense Data into sense buffer. */
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qla4xxx_copy_sense(ha, sts_entry, srb);
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break;
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case SCS_INCOMPLETE:
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/* Always set the status to DID_ERROR, since
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* all conditions result in that status anyway */
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cmd->result = DID_ERROR << 16;
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break;
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case SCS_RESET_OCCURRED:
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DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n",
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ha->host_no, cmd->device->channel,
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cmd->device->id, cmd->device->lun, __func__));
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cmd->result = DID_RESET << 16;
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break;
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case SCS_ABORTED:
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DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n",
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ha->host_no, cmd->device->channel,
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cmd->device->id, cmd->device->lun, __func__));
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cmd->result = DID_RESET << 16;
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break;
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case SCS_TIMEOUT:
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DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n",
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ha->host_no, cmd->device->channel,
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cmd->device->id, cmd->device->lun));
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cmd->result = DID_TRANSPORT_DISRUPTED << 16;
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/*
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* Mark device missing so that we won't continue to send
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* I/O to this device. We should get a ddb state change
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* AEN soon.
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*/
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if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
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qla4xxx_mark_device_missing(ha, ddb_entry);
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break;
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case SCS_DATA_UNDERRUN:
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case SCS_DATA_OVERRUN:
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if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) ||
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(sts_entry->completionStatus == SCS_DATA_OVERRUN)) {
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DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n",
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ha->host_no,
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cmd->device->channel, cmd->device->id,
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cmd->device->lun, __func__));
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cmd->result = DID_ERROR << 16;
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break;
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}
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scsi_set_resid(cmd, residual);
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/*
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* If there is scsi_status, it takes precedense over
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* underflow condition.
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*/
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if (scsi_status != 0) {
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cmd->result = DID_OK << 16 | scsi_status;
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if (scsi_status != SCSI_CHECK_CONDITION)
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break;
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/* Copy Sense Data into sense buffer. */
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qla4xxx_copy_sense(ha, sts_entry, srb);
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} else {
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/*
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* If RISC reports underrun and target does not
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* report it then we must have a lost frame, so
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* tell upper layer to retry it by reporting a
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* bus busy.
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*/
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if ((sts_entry->iscsiFlags &
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ISCSI_FLAG_RESIDUAL_UNDER) == 0) {
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cmd->result = DID_BUS_BUSY << 16;
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} else if ((scsi_bufflen(cmd) - residual) <
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cmd->underflow) {
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/*
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* Handle mid-layer underflow???
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*
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* For kernels less than 2.4, the driver must
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* return an error if an underflow is detected.
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* For kernels equal-to and above 2.4, the
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* mid-layer will appearantly handle the
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* underflow by detecting the residual count --
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* unfortunately, we do not see where this is
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* actually being done. In the interim, we
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* will return DID_ERROR.
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*/
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DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
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"Mid-layer Data underrun1, "
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"xferlen = 0x%x, "
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"residual = 0x%x\n", ha->host_no,
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cmd->device->channel,
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cmd->device->id,
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cmd->device->lun, __func__,
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scsi_bufflen(cmd), residual));
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cmd->result = DID_ERROR << 16;
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} else {
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cmd->result = DID_OK << 16;
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}
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}
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break;
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case SCS_DEVICE_LOGGED_OUT:
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case SCS_DEVICE_UNAVAILABLE:
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DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE "
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"state: 0x%x\n", ha->host_no,
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cmd->device->channel, cmd->device->id,
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cmd->device->lun, sts_entry->completionStatus));
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/*
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* Mark device missing so that we won't continue to
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* send I/O to this device. We should get a ddb
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* state change AEN soon.
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*/
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if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
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qla4xxx_mark_device_missing(ha, ddb_entry);
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cmd->result = DID_TRANSPORT_DISRUPTED << 16;
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break;
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case SCS_QUEUE_FULL:
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/*
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* SCSI Mid-Layer handles device queue full
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*/
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cmd->result = DID_OK << 16 | sts_entry->scsiStatus;
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DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected "
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"compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
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" iResp=%02x\n", ha->host_no, cmd->device->id,
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cmd->device->lun, __func__,
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sts_entry->completionStatus,
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sts_entry->scsiStatus, sts_entry->state_flags,
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sts_entry->iscsiFlags,
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sts_entry->iscsiResponse));
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break;
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default:
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cmd->result = DID_ERROR << 16;
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break;
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}
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status_entry_exit:
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/* complete the request, if not waiting for status_continuation pkt */
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srb->cc_stat = sts_entry->completionStatus;
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if (ha->status_srb == NULL)
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kref_put(&srb->srb_ref, qla4xxx_srb_compl);
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}
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/**
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* qla4xxx_process_response_queue - process response queue completions
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* @ha: Pointer to host adapter structure.
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*
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* This routine process response queue completions in interrupt context.
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* Hardware_lock locked upon entry
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**/
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void qla4xxx_process_response_queue(struct scsi_qla_host *ha)
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{
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uint32_t count = 0;
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struct srb *srb = NULL;
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struct status_entry *sts_entry;
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/* Process all responses from response queue */
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while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) {
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sts_entry = (struct status_entry *) ha->response_ptr;
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count++;
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/* Advance pointers for next entry */
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if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) {
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ha->response_out = 0;
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ha->response_ptr = ha->response_ring;
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} else {
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ha->response_out++;
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ha->response_ptr++;
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}
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/* process entry */
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switch (sts_entry->hdr.entryType) {
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case ET_STATUS:
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/* Common status */
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qla4xxx_status_entry(ha, sts_entry);
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break;
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case ET_PASSTHRU_STATUS:
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break;
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case ET_STATUS_CONTINUATION:
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qla4xxx_status_cont_entry(ha,
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(struct status_cont_entry *) sts_entry);
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break;
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case ET_COMMAND:
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/* ISP device queue is full. Command not
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* accepted by ISP. Queue command for
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* later */
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srb = qla4xxx_del_from_active_array(ha,
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le32_to_cpu(sts_entry->
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handle));
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if (srb == NULL)
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goto exit_prq_invalid_handle;
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DEBUG2(printk("scsi%ld: %s: FW device queue full, "
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"srb %p\n", ha->host_no, __func__, srb));
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|
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/* ETRY normally by sending it back with
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* DID_BUS_BUSY */
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srb->cmd->result = DID_BUS_BUSY << 16;
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kref_put(&srb->srb_ref, qla4xxx_srb_compl);
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break;
|
|
|
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case ET_CONTINUE:
|
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/* Just throw away the continuation entries */
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DEBUG2(printk("scsi%ld: %s: Continuation entry - "
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"ignoring\n", ha->host_no, __func__));
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break;
|
|
|
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default:
|
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/*
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* Invalid entry in response queue, reset RISC
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* firmware.
|
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*/
|
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DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
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"response queue \n", ha->host_no,
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__func__,
|
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sts_entry->hdr.entryType));
|
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goto exit_prq_error;
|
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}
|
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((struct response *)sts_entry)->signature = RESPONSE_PROCESSED;
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wmb();
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}
|
|
|
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/*
|
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* Tell ISP we're done with response(s). This also clears the interrupt.
|
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*/
|
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ha->isp_ops->complete_iocb(ha);
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|
|
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return;
|
|
|
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exit_prq_invalid_handle:
|
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DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
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ha->host_no, __func__, srb, sts_entry->hdr.entryType,
|
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sts_entry->completionStatus));
|
|
|
|
exit_prq_error:
|
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ha->isp_ops->complete_iocb(ha);
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set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
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}
|
|
|
|
/**
|
|
* qla4xxx_isr_decode_mailbox - decodes mailbox status
|
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* @ha: Pointer to host adapter structure.
|
|
* @mailbox_status: Mailbox status.
|
|
*
|
|
* This routine decodes the mailbox status during the ISR.
|
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* 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;
|
|
uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
|
|
|
|
if ((mbox_status == MBOX_STS_BUSY) ||
|
|
(mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
|
|
(mbox_status >> 12 == MBOX_COMPLETION_STATUS)) {
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|
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 = 0; i < ha->mbox_status_count; i++)
|
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ha->mbox_status[i] = is_qla8022(ha)
|
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? readl(&ha->qla4_8xxx_reg->mailbox_out[i])
|
|
: readl(&ha->reg->mailbox[i]);
|
|
|
|
set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
|
|
|
|
if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags))
|
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complete(&ha->mbx_intr_comp);
|
|
}
|
|
} else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
|
|
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
|
|
mbox_sts[i] = is_qla8022(ha)
|
|
? readl(&ha->qla4_8xxx_reg->mailbox_out[i])
|
|
: readl(&ha->reg->mailbox[i]);
|
|
|
|
/* Immediately process the AENs that don't require much work.
|
|
* Only queue the database_changed AENs */
|
|
if (ha->aen_log.count < MAX_AEN_ENTRIES) {
|
|
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
|
|
ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] =
|
|
mbox_sts[i];
|
|
ha->aen_log.count++;
|
|
}
|
|
switch (mbox_status) {
|
|
case MBOX_ASTS_SYSTEM_ERROR:
|
|
/* Log Mailbox registers */
|
|
ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__);
|
|
qla4xxx_dump_registers(ha);
|
|
|
|
if (ql4xdontresethba) {
|
|
DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n",
|
|
ha->host_no, __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:
|
|
set_bit(AF_LINK_UP, &ha->flags);
|
|
if (test_bit(AF_INIT_DONE, &ha->flags))
|
|
set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
|
|
|
|
ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
|
|
break;
|
|
|
|
case MBOX_ASTS_LINK_DOWN:
|
|
clear_bit(AF_LINK_UP, &ha->flags);
|
|
if (test_bit(AF_INIT_DONE, &ha->flags))
|
|
set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
|
|
|
|
ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
|
|
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_IP_ADDR_STATE_CHANGED:
|
|
printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, "
|
|
"mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0],
|
|
mbox_sts[2], mbox_sts[3]);
|
|
|
|
/* mbox_sts[2] = Old ACB state
|
|
* mbox_sts[3] = new ACB state */
|
|
if ((mbox_sts[3] == ACB_STATE_VALID) &&
|
|
((mbox_sts[2] == ACB_STATE_TENTATIVE) ||
|
|
(mbox_sts[2] == ACB_STATE_ACQUIRING)))
|
|
set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
|
|
else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) &&
|
|
(mbox_sts[2] == ACB_STATE_VALID))
|
|
set_bit(DPC_RESET_HA, &ha->dpc_flags);
|
|
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_sts[0],
|
|
mbox_sts[1], mbox_sts[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_sts[0], mbox_sts[1],
|
|
mbox_sts[2], mbox_sts[3]));
|
|
break;
|
|
|
|
case MBOX_ASTS_DATABASE_CHANGED:
|
|
/* Queue AEN information and process it in the DPC
|
|
* routine */
|
|
if (ha->aen_q_count > 0) {
|
|
|
|
/* decrement available counter */
|
|
ha->aen_q_count--;
|
|
|
|
for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
|
|
ha->aen_q[ha->aen_in].mbox_sts[i] =
|
|
mbox_sts[i];
|
|
|
|
/* 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_sts[0],
|
|
mbox_sts[1], mbox_sts[2], mbox_sts[3],
|
|
mbox_sts[4]));
|
|
|
|
/* advance pointer */
|
|
ha->aen_in++;
|
|
if (ha->aen_in == MAX_AEN_ENTRIES)
|
|
ha->aen_in = 0;
|
|
|
|
/* 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_sts[0]));
|
|
|
|
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, mbox_sts[0],
|
|
mbox_sts[1], mbox_sts[2],
|
|
mbox_sts[3]));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MBOX_ASTS_TXSCVR_INSERTED:
|
|
DEBUG2(printk(KERN_WARNING
|
|
"scsi%ld: AEN %04x Transceiver"
|
|
" inserted\n", ha->host_no, mbox_sts[0]));
|
|
break;
|
|
|
|
case MBOX_ASTS_TXSCVR_REMOVED:
|
|
DEBUG2(printk(KERN_WARNING
|
|
"scsi%ld: AEN %04x Transceiver"
|
|
" removed\n", ha->host_no, mbox_sts[0]));
|
|
break;
|
|
|
|
default:
|
|
DEBUG2(printk(KERN_WARNING
|
|
"scsi%ld: AEN %04x UNKNOWN\n",
|
|
ha->host_no, mbox_sts[0]));
|
|
break;
|
|
}
|
|
} else {
|
|
DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
|
|
ha->host_no, mbox_status));
|
|
|
|
ha->mbox_status[0] = mbox_status;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_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 qla4_8xxx_interrupt_service_routine(struct scsi_qla_host *ha,
|
|
uint32_t intr_status)
|
|
{
|
|
/* Process response queue interrupt. */
|
|
if (intr_status & HSRX_RISC_IOCB_INT)
|
|
qla4xxx_process_response_queue(ha);
|
|
|
|
/* Process mailbox/asynch event interrupt.*/
|
|
if (intr_status & HSRX_RISC_MB_INT)
|
|
qla4xxx_isr_decode_mailbox(ha,
|
|
readl(&ha->qla4_8xxx_reg->mailbox_out[0]));
|
|
|
|
/* clear the interrupt */
|
|
writel(0, &ha->qla4_8xxx_reg->host_int);
|
|
readl(&ha->qla4_8xxx_reg->host_int);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_spurious_interrupt - processes spurious interrupt
|
|
* @ha: pointer to host adapter structure.
|
|
* @reqs_count: .
|
|
*
|
|
**/
|
|
static void qla4_8xxx_spurious_interrupt(struct scsi_qla_host *ha,
|
|
uint8_t reqs_count)
|
|
{
|
|
if (reqs_count)
|
|
return;
|
|
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n"));
|
|
if (is_qla8022(ha)) {
|
|
writel(0, &ha->qla4_8xxx_reg->host_int);
|
|
if (test_bit(AF_INTx_ENABLED, &ha->flags))
|
|
qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
|
|
0xfbff);
|
|
}
|
|
ha->spurious_int_count++;
|
|
}
|
|
|
|
/**
|
|
* qla4xxx_intr_handler - hardware interrupt handler.
|
|
* @irq: Unused
|
|
* @dev_id: Pointer to host adapter structure
|
|
**/
|
|
irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
|
|
{
|
|
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);
|
|
|
|
ha->isr_count++;
|
|
/*
|
|
* Repeatedly service interrupts up to a maximum of
|
|
* MAX_REQS_SERVICED_PER_INTR
|
|
*/
|
|
while (1) {
|
|
/*
|
|
* Read interrupt status
|
|
*/
|
|
if (ha->isp_ops->rd_shdw_rsp_q_in(ha) !=
|
|
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);
|
|
|
|
if (!test_bit(AF_HA_REMOVAL, &ha->flags))
|
|
set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
|
|
|
|
break;
|
|
} else if (intr_status & INTR_PENDING) {
|
|
ha->isp_ops->interrupt_service_routine(ha, intr_status);
|
|
ha->total_io_count++;
|
|
if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
|
|
break;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_intr_handler - hardware interrupt handler.
|
|
* @irq: Unused
|
|
* @dev_id: Pointer to host adapter structure
|
|
**/
|
|
irqreturn_t qla4_8xxx_intr_handler(int irq, void *dev_id)
|
|
{
|
|
struct scsi_qla_host *ha = dev_id;
|
|
uint32_t intr_status;
|
|
uint32_t status;
|
|
unsigned long flags = 0;
|
|
uint8_t reqs_count = 0;
|
|
|
|
if (unlikely(pci_channel_offline(ha->pdev)))
|
|
return IRQ_HANDLED;
|
|
|
|
ha->isr_count++;
|
|
status = qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
|
|
if (!(status & ha->nx_legacy_intr.int_vec_bit))
|
|
return IRQ_NONE;
|
|
|
|
status = qla4_8xxx_rd_32(ha, ISR_INT_STATE_REG);
|
|
if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"%s legacy Int not triggered\n", __func__));
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* clear the interrupt */
|
|
qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
|
|
|
|
/* read twice to ensure write is flushed */
|
|
qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
|
|
qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
while (1) {
|
|
if (!(readl(&ha->qla4_8xxx_reg->host_int) &
|
|
ISRX_82XX_RISC_INT)) {
|
|
qla4_8xxx_spurious_interrupt(ha, reqs_count);
|
|
break;
|
|
}
|
|
intr_status = readl(&ha->qla4_8xxx_reg->host_status);
|
|
if ((intr_status &
|
|
(HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
|
|
qla4_8xxx_spurious_interrupt(ha, reqs_count);
|
|
break;
|
|
}
|
|
|
|
ha->isp_ops->interrupt_service_routine(ha, intr_status);
|
|
|
|
/* Enable Interrupt */
|
|
qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff);
|
|
|
|
if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
irqreturn_t
|
|
qla4_8xxx_msi_handler(int irq, void *dev_id)
|
|
{
|
|
struct scsi_qla_host *ha;
|
|
|
|
ha = (struct scsi_qla_host *) dev_id;
|
|
if (!ha) {
|
|
DEBUG2(printk(KERN_INFO
|
|
"qla4xxx: MSIX: Interrupt with NULL host ptr\n"));
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
ha->isr_count++;
|
|
/* clear the interrupt */
|
|
qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
|
|
|
|
/* read twice to ensure write is flushed */
|
|
qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
|
|
qla4_8xxx_rd_32(ha, ISR_INT_VECTOR);
|
|
|
|
return qla4_8xxx_default_intr_handler(irq, dev_id);
|
|
}
|
|
|
|
/**
|
|
* qla4_8xxx_default_intr_handler - hardware interrupt handler.
|
|
* @irq: Unused
|
|
* @dev_id: Pointer to host adapter structure
|
|
*
|
|
* This interrupt handler is called directly for MSI-X, and
|
|
* called indirectly for MSI.
|
|
**/
|
|
irqreturn_t
|
|
qla4_8xxx_default_intr_handler(int irq, void *dev_id)
|
|
{
|
|
struct scsi_qla_host *ha = dev_id;
|
|
unsigned long flags;
|
|
uint32_t intr_status;
|
|
uint8_t reqs_count = 0;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
while (1) {
|
|
if (!(readl(&ha->qla4_8xxx_reg->host_int) &
|
|
ISRX_82XX_RISC_INT)) {
|
|
qla4_8xxx_spurious_interrupt(ha, reqs_count);
|
|
break;
|
|
}
|
|
|
|
intr_status = readl(&ha->qla4_8xxx_reg->host_status);
|
|
if ((intr_status &
|
|
(HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
|
|
qla4_8xxx_spurious_interrupt(ha, reqs_count);
|
|
break;
|
|
}
|
|
|
|
ha->isp_ops->interrupt_service_routine(ha, intr_status);
|
|
|
|
if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
|
|
break;
|
|
}
|
|
|
|
ha->isr_count++;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
irqreturn_t
|
|
qla4_8xxx_msix_rsp_q(int irq, void *dev_id)
|
|
{
|
|
struct scsi_qla_host *ha = dev_id;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qla4xxx_process_response_queue(ha);
|
|
writel(0, &ha->qla4_8xxx_reg->host_int);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
ha->isr_count++;
|
|
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) {
|
|
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];
|
|
|
|
ha->aen_q_count++;
|
|
ha->aen_out++;
|
|
|
|
if (ha->aen_out == MAX_AEN_ENTRIES)
|
|
ha->aen_out = 0;
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x"
|
|
" mbx3=0x%08x mbx4=0x%08x\n", ha->host_no,
|
|
(ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)),
|
|
mbox_sts[0], mbox_sts[1], mbox_sts[2],
|
|
mbox_sts[3], 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;
|
|
}
|
|
case PROCESS_ALL_AENS:
|
|
default:
|
|
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], mbox_sts[4]);
|
|
}
|
|
break;
|
|
}
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
int qla4xxx_request_irqs(struct scsi_qla_host *ha)
|
|
{
|
|
int ret;
|
|
|
|
if (!is_qla8022(ha))
|
|
goto try_intx;
|
|
|
|
if (ql4xenablemsix == 2)
|
|
goto try_msi;
|
|
|
|
if (ql4xenablemsix == 0 || ql4xenablemsix != 1)
|
|
goto try_intx;
|
|
|
|
/* Trying MSI-X */
|
|
ret = qla4_8xxx_enable_msix(ha);
|
|
if (!ret) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha,
|
|
"MSI-X: Enabled (0x%X).\n", ha->revision_id));
|
|
goto irq_attached;
|
|
}
|
|
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"MSI-X: Falling back-to MSI mode -- %d.\n", ret);
|
|
|
|
try_msi:
|
|
/* Trying MSI */
|
|
ret = pci_enable_msi(ha->pdev);
|
|
if (!ret) {
|
|
ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler,
|
|
0, DRIVER_NAME, ha);
|
|
if (!ret) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
|
|
set_bit(AF_MSI_ENABLED, &ha->flags);
|
|
goto irq_attached;
|
|
} else {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"MSI: Failed to reserve interrupt %d "
|
|
"already in use.\n", ha->pdev->irq);
|
|
pci_disable_msi(ha->pdev);
|
|
}
|
|
}
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"MSI: Falling back-to INTx mode -- %d.\n", ret);
|
|
|
|
try_intx:
|
|
/* Trying INTx */
|
|
ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
|
|
IRQF_SHARED, DRIVER_NAME, ha);
|
|
if (!ret) {
|
|
DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n"));
|
|
set_bit(AF_INTx_ENABLED, &ha->flags);
|
|
goto irq_attached;
|
|
|
|
} else {
|
|
ql4_printk(KERN_WARNING, ha,
|
|
"INTx: Failed to reserve interrupt %d already in"
|
|
" use.\n", ha->pdev->irq);
|
|
return ret;
|
|
}
|
|
|
|
irq_attached:
|
|
set_bit(AF_IRQ_ATTACHED, &ha->flags);
|
|
ha->host->irq = ha->pdev->irq;
|
|
ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n",
|
|
__func__, ha->pdev->irq);
|
|
return ret;
|
|
}
|
|
|
|
void qla4xxx_free_irqs(struct scsi_qla_host *ha)
|
|
{
|
|
if (test_bit(AF_MSIX_ENABLED, &ha->flags))
|
|
qla4_8xxx_disable_msix(ha);
|
|
else if (test_and_clear_bit(AF_MSI_ENABLED, &ha->flags)) {
|
|
free_irq(ha->pdev->irq, ha);
|
|
pci_disable_msi(ha->pdev);
|
|
} else if (test_and_clear_bit(AF_INTx_ENABLED, &ha->flags))
|
|
free_irq(ha->pdev->irq, ha);
|
|
}
|