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https://github.com/torvalds/linux
synced 2024-10-04 02:10:58 +00:00
scsi: mpi3mr: Prevent PCI writes from driver during PCI error recovery
Prevent interaction with the hardware while the error recovery in progress. Co-developed-by: Sathya Prakash <sathya.prakash@broadcom.com> Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com> Co-developed-by: Ranjan Kumar <ranjan.kumar@broadcom.com> Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com> Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Link: https://lore.kernel.org/r/20240627101735.18286-3-sumit.saxena@broadcom.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
30bafe1774
commit
1c342b0548
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@ -519,6 +519,7 @@ struct mpi3mr_throttle_group_info {
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/* HBA port flags */
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#define MPI3MR_HBA_PORT_FLAG_DIRTY 0x01
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#define MPI3MR_HBA_PORT_FLAG_NEW 0x02
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/* IOCTL data transfer sge*/
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#define MPI3MR_NUM_IOCTL_SGE 256
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@ -846,7 +846,7 @@ static int mpi3mr_bsg_pel_abort(struct mpi3mr_ioc *mrioc)
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dprint_bsg_err(mrioc, "%s: reset in progress\n", __func__);
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return -1;
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}
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if (mrioc->stop_bsgs) {
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if (mrioc->stop_bsgs || mrioc->block_on_pci_err) {
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dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
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return -1;
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}
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@ -1492,6 +1492,9 @@ static long mpi3mr_bsg_adp_reset(struct mpi3mr_ioc *mrioc,
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goto out;
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}
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if (mrioc->unrecoverable || mrioc->block_on_pci_err)
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return -EINVAL;
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sg_copy_to_buffer(job->request_payload.sg_list,
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job->request_payload.sg_cnt,
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&adpreset, sizeof(adpreset));
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@ -2575,7 +2578,7 @@ static long mpi3mr_bsg_process_mpt_cmds(struct bsg_job *job)
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mutex_unlock(&mrioc->bsg_cmds.mutex);
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goto out;
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}
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if (mrioc->stop_bsgs) {
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if (mrioc->stop_bsgs || mrioc->block_on_pci_err) {
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dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
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rval = -EAGAIN;
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mutex_unlock(&mrioc->bsg_cmds.mutex);
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@ -3108,7 +3111,8 @@ adp_state_show(struct device *dev, struct device_attribute *attr,
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ioc_state = mpi3mr_get_iocstate(mrioc);
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if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
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adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
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else if ((mrioc->reset_in_progress) || (mrioc->stop_bsgs))
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else if (mrioc->reset_in_progress || mrioc->stop_bsgs ||
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mrioc->block_on_pci_err)
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adp_state = MPI3MR_BSG_ADPSTATE_IN_RESET;
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else if (ioc_state == MRIOC_STATE_FAULT)
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adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
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@ -608,7 +608,7 @@ int mpi3mr_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
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mrioc = (struct mpi3mr_ioc *)shost->hostdata;
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if ((mrioc->reset_in_progress || mrioc->prepare_for_reset ||
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mrioc->unrecoverable))
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mrioc->unrecoverable || mrioc->pci_err_recovery))
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return 0;
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num_entries = mpi3mr_process_op_reply_q(mrioc,
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@ -1693,6 +1693,12 @@ int mpi3mr_admin_request_post(struct mpi3mr_ioc *mrioc, void *admin_req,
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retval = -EAGAIN;
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goto out;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "admin request queue submission failed due to pci error recovery in progress\n");
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retval = -EAGAIN;
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goto out;
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}
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areq_entry = (u8 *)mrioc->admin_req_base +
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(areq_pi * MPI3MR_ADMIN_REQ_FRAME_SZ);
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memset(areq_entry, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
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@ -2363,6 +2369,11 @@ int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc,
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retval = -EAGAIN;
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goto out;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "operational request queue submission failed due to pci error recovery in progress\n");
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retval = -EAGAIN;
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goto out;
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}
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segment_base_addr = segments[pi / op_req_q->segment_qd].segment;
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req_entry = (u8 *)segment_base_addr +
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@ -2627,7 +2638,7 @@ static void mpi3mr_watchdog_work(struct work_struct *work)
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union mpi3mr_trigger_data trigger_data;
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u16 reset_reason = MPI3MR_RESET_FROM_FAULT_WATCH;
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return;
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if (!mrioc->unrecoverable && !pci_device_is_present(mrioc->pdev)) {
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@ -4268,7 +4279,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
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goto out_failed_noretry;
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}
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if (is_resume) {
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if (is_resume || mrioc->block_on_pci_err) {
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dprint_reset(mrioc, "setting up single ISR\n");
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retval = mpi3mr_setup_isr(mrioc, 1);
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if (retval) {
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@ -4319,7 +4330,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
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goto out_failed;
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}
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if (is_resume) {
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if (is_resume || mrioc->block_on_pci_err) {
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dprint_reset(mrioc, "setting up multiple ISR\n");
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retval = mpi3mr_setup_isr(mrioc, 0);
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if (retval) {
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@ -4807,7 +4818,8 @@ void mpi3mr_cleanup_ioc(struct mpi3mr_ioc *mrioc)
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ioc_state = mpi3mr_get_iocstate(mrioc);
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if ((!mrioc->unrecoverable) && (!mrioc->reset_in_progress) &&
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if (!mrioc->unrecoverable && !mrioc->reset_in_progress &&
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!mrioc->pci_err_recovery &&
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(ioc_state == MRIOC_STATE_READY)) {
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if (mpi3mr_issue_and_process_mur(mrioc,
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MPI3MR_RESET_FROM_CTLR_CLEANUP))
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@ -956,7 +956,7 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
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int retval = 0;
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struct mpi3mr_tgt_dev *tgtdev;
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return -1;
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tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
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@ -2007,6 +2007,7 @@ static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
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struct mpi3_device_page0 *dev_pg0 = NULL;
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u16 perst_id, handle, dev_info;
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struct mpi3_device0_sas_sata_format *sasinf = NULL;
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unsigned int timeout;
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mpi3mr_fwevt_del_from_list(mrioc, fwevt);
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mrioc->current_event = fwevt;
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@ -2097,8 +2098,18 @@ static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
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}
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case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
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{
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while (mrioc->device_refresh_on)
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timeout = MPI3MR_RESET_TIMEOUT * 2;
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while ((mrioc->device_refresh_on || mrioc->block_on_pci_err) &&
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!mrioc->unrecoverable && !mrioc->pci_err_recovery) {
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msleep(500);
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if (!timeout--) {
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mrioc->unrecoverable = 1;
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break;
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}
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}
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if (mrioc->unrecoverable || mrioc->pci_err_recovery)
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break;
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dprint_event_bh(mrioc,
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"scan for non responding and newly added devices after soft reset started\n");
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@ -3796,6 +3807,13 @@ int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
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mutex_unlock(&drv_cmd->mutex);
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goto out;
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}
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if (mrioc->block_on_pci_err) {
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retval = -1;
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dprint_tm(mrioc, "sending task management failed due to\n"
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"pci error recovery in progress\n");
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mutex_unlock(&drv_cmd->mutex);
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goto out;
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}
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drv_cmd->state = MPI3MR_CMD_PENDING;
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drv_cmd->is_waiting = 1;
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@ -4181,6 +4199,7 @@ static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
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struct mpi3mr_sdev_priv_data *sdev_priv_data;
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u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
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int retval = FAILED;
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unsigned int timeout = MPI3MR_RESET_TIMEOUT;
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sdev_priv_data = scmd->device->hostdata;
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if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
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@ -4191,12 +4210,24 @@ static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
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if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
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mpi3mr_wait_for_host_io(mrioc,
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MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
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if (!mpi3mr_get_fw_pending_ios(mrioc))
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if (!mpi3mr_get_fw_pending_ios(mrioc)) {
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while (mrioc->reset_in_progress ||
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mrioc->prepare_for_reset ||
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mrioc->block_on_pci_err) {
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ssleep(1);
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if (!timeout--) {
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retval = FAILED;
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goto out;
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}
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}
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retval = SUCCESS;
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goto out;
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}
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}
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if (retval == FAILED)
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mpi3mr_print_pending_host_io(mrioc);
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out:
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sdev_printk(KERN_INFO, scmd->device,
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"Bus reset is %s for scmd(%p)\n",
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((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
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@ -4879,7 +4910,8 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
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goto out;
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}
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if (mrioc->reset_in_progress) {
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if (mrioc->reset_in_progress || mrioc->prepare_for_reset
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|| mrioc->block_on_pci_err) {
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retval = SCSI_MLQUEUE_HOST_BUSY;
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goto out;
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}
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@ -5362,7 +5394,14 @@ static void mpi3mr_remove(struct pci_dev *pdev)
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while (mrioc->reset_in_progress || mrioc->is_driver_loading)
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ssleep(1);
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if (!pci_device_is_present(mrioc->pdev)) {
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if (mrioc->block_on_pci_err) {
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mrioc->block_on_pci_err = false;
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scsi_unblock_requests(shost);
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mrioc->unrecoverable = 1;
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}
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if (!pci_device_is_present(mrioc->pdev) ||
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mrioc->pci_err_recovery) {
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mrioc->unrecoverable = 1;
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mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
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}
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@ -151,6 +151,11 @@ static int mpi3mr_report_manufacture(struct mpi3mr_ioc *mrioc,
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return -EFAULT;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
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return -EFAULT;
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}
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data_out_sz = sizeof(struct rep_manu_request);
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data_in_sz = sizeof(struct rep_manu_reply);
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data_out = dma_alloc_coherent(&mrioc->pdev->dev,
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@ -790,6 +795,12 @@ static int mpi3mr_set_identify(struct mpi3mr_ioc *mrioc, u16 handle,
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return -EFAULT;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "%s: pci error recovery in progress!\n",
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__func__);
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return -EFAULT;
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}
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if ((mpi3mr_cfg_get_dev_pg0(mrioc, &ioc_status, &device_pg0,
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sizeof(device_pg0), MPI3_DEVICE_PGAD_FORM_HANDLE, handle))) {
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ioc_err(mrioc, "%s: device page0 read failed\n", __func__);
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@ -1007,6 +1018,9 @@ mpi3mr_alloc_hba_port(struct mpi3mr_ioc *mrioc, u16 port_id)
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hba_port->port_id = port_id;
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ioc_info(mrioc, "hba_port entry: %p, port: %d is added to hba_port list\n",
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hba_port, hba_port->port_id);
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if (mrioc->reset_in_progress ||
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mrioc->pci_err_recovery)
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hba_port->flags = MPI3MR_HBA_PORT_FLAG_NEW;
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list_add_tail(&hba_port->list, &mrioc->hba_port_table_list);
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return hba_port;
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}
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@ -1055,7 +1069,7 @@ void mpi3mr_update_links(struct mpi3mr_ioc *mrioc,
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struct mpi3mr_sas_node *mr_sas_node;
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struct mpi3mr_sas_phy *mr_sas_phy;
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return;
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spin_lock_irqsave(&mrioc->sas_node_lock, flags);
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@ -1978,7 +1992,7 @@ int mpi3mr_expander_add(struct mpi3mr_ioc *mrioc, u16 handle)
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if (!handle)
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return -1;
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return -1;
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if ((mpi3mr_cfg_get_sas_exp_pg0(mrioc, &ioc_status, &expander_pg0,
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@ -2184,7 +2198,7 @@ void mpi3mr_expander_node_remove(struct mpi3mr_ioc *mrioc,
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/* remove sibling ports attached to this expander */
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list_for_each_entry_safe(mr_sas_port, next,
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&sas_expander->sas_port_list, port_list) {
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return;
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if (mr_sas_port->remote_identify.device_type ==
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SAS_END_DEVICE)
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@ -2234,7 +2248,7 @@ void mpi3mr_expander_remove(struct mpi3mr_ioc *mrioc, u64 sas_address,
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struct mpi3mr_sas_node *sas_expander;
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unsigned long flags;
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if (mrioc->reset_in_progress)
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if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
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return;
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if (!hba_port)
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@ -2545,6 +2559,11 @@ static int mpi3mr_get_expander_phy_error_log(struct mpi3mr_ioc *mrioc,
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return -EFAULT;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
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return -EFAULT;
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}
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data_out_sz = sizeof(struct phy_error_log_request);
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data_in_sz = sizeof(struct phy_error_log_reply);
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sz = data_out_sz + data_in_sz;
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@ -2804,6 +2823,12 @@ mpi3mr_expander_phy_control(struct mpi3mr_ioc *mrioc,
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return -EFAULT;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "%s: pci error recovery in progress!\n",
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__func__);
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return -EFAULT;
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}
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data_out_sz = sizeof(struct phy_control_request);
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data_in_sz = sizeof(struct phy_control_reply);
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sz = data_out_sz + data_in_sz;
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@ -3227,6 +3252,12 @@ mpi3mr_transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
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goto out;
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}
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if (mrioc->pci_err_recovery) {
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ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
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rc = -EFAULT;
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goto out;
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}
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rc = mpi3mr_map_smp_buffer(&mrioc->pdev->dev, &job->request_payload,
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&dma_addr_out, &dma_len_out, &addr_out);
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if (rc)
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