* [PATCH v4 1/3] mpi3mr: Support PCI Error Recovery callback handlers
2024-06-26 18:26 [PATCH v4 0/3] mpi3mr: Support PCI Error Recovery Sumit Saxena
@ 2024-06-26 18:26 ` Sumit Saxena
2024-06-26 18:26 ` [PATCH v4 2/3] mpi3mr: Prevent PCI writes from driver during PCI error recovery Sumit Saxena
2024-06-26 18:26 ` [PATCH v4 3/3] mpi3mr: driver version update Sumit Saxena
2 siblings, 0 replies; 4+ messages in thread
From: Sumit Saxena @ 2024-06-26 18:26 UTC (permalink / raw)
To: martin.petersen, helgaas, sathya.prakash, sumit.saxena,
chandrakanth.patil, prayas.patel
Cc: linux-scsi, linux-pci, Ranjan Kumar
[-- Attachment #1: Type: text/plain, Size: 8139 bytes --]
PCI Error recovery support is required to recover the controller upon detection of PCI errors.
Add support for the PCI error recovery callback handlers in mpi3mr driver.
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
---
drivers/scsi/mpi3mr/mpi3mr.h | 6 +
drivers/scsi/mpi3mr/mpi3mr_os.c | 199 ++++++++++++++++++++++++++++++++
2 files changed, 205 insertions(+)
diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h
index c8968f12b9e6..2b1d5645ba9b 100644
--- a/drivers/scsi/mpi3mr/mpi3mr.h
+++ b/drivers/scsi/mpi3mr/mpi3mr.h
@@ -23,6 +23,7 @@
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/aer.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/slab.h>
@@ -129,6 +130,7 @@ extern atomic64_t event_counter;
#define MPI3MR_PREPARE_FOR_RESET_TIMEOUT 180
#define MPI3MR_RESET_ACK_TIMEOUT 30
#define MPI3MR_MUR_TIMEOUT 120
+#define MPI3MR_RESET_TIMEOUT 510
#define MPI3MR_WATCHDOG_INTERVAL 1000 /* in milli seconds */
@@ -1153,6 +1155,8 @@ struct scmd_priv {
* @trace_release_trigger_active: Trace trigger active flag
* @fw_release_trigger_active: Fw release trigger active flag
* @snapdump_trigger_active: Snapdump trigger active flag
+ * @pci_err_recovery: PCI error recovery in progress
+ * @block_on_pci_err: Block IO during PCI error recovery
*/
struct mpi3mr_ioc {
struct list_head list;
@@ -1353,6 +1357,8 @@ struct mpi3mr_ioc {
bool snapdump_trigger_active;
bool trace_release_trigger_active;
bool fw_release_trigger_active;
+ bool pci_err_recovery;
+ bool block_on_pci_err;
};
/**
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index eac179dc9370..b71cf273c41e 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -5546,6 +5546,197 @@ mpi3mr_resume(struct device *dev)
return 0;
}
+/**
+ * mpi3mr_pcierr_error_detected - PCI error detected callback
+ * @pdev: PCI device instance
+ * @state: channel state
+ *
+ * This function is called by the PCI error recovery driver and
+ * based on the state passed the driver decides what actions to
+ * be recommended back to PCI driver.
+ *
+ * For all of the states if there is no valid mrioc or scsi host
+ * references in the PCI device then this function will return
+ * the result as disconnect.
+ *
+ * For normal state, this function will return the result as can
+ * recover.
+ *
+ * For frozen state, this function will block for any pending
+ * controller initialization or re-initialization to complete,
+ * stop any new interactions with the controller and return
+ * status as reset required.
+ *
+ * For permanent failure state, this function will mark the
+ * controller as unrecoverable and return status as disconnect.
+ *
+ * Returns: PCI_ERS_RESULT_NEED_RESET or CAN_RECOVER or
+ * DISCONNECT based on the controller state.
+ */
+static pci_ers_result_t
+mpi3mr_pcierr_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+ struct Scsi_Host *shost;
+ struct mpi3mr_ioc *mrioc;
+ unsigned int timeout = MPI3MR_RESET_TIMEOUT;
+
+ dev_info(&pdev->dev, "%s: callback invoked state(%d)\n", __func__,
+ state);
+
+ shost = pci_get_drvdata(pdev);
+ mrioc = shost_priv(shost);
+
+ switch (state) {
+ case pci_channel_io_normal:
+ return PCI_ERS_RESULT_CAN_RECOVER;
+ case pci_channel_io_frozen:
+ mrioc->pci_err_recovery = true;
+ mrioc->block_on_pci_err = true;
+ do {
+ if (mrioc->reset_in_progress || mrioc->is_driver_loading)
+ ssleep(1);
+ else
+ break;
+ } while (--timeout);
+
+ if (!timeout) {
+ mrioc->pci_err_recovery = true;
+ mrioc->block_on_pci_err = true;
+ mrioc->unrecoverable = 1;
+ mpi3mr_stop_watchdog(mrioc);
+ mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ scsi_block_requests(mrioc->shost);
+ mpi3mr_stop_watchdog(mrioc);
+ mpi3mr_cleanup_resources(mrioc);
+ return PCI_ERS_RESULT_NEED_RESET;
+ case pci_channel_io_perm_failure:
+ mrioc->pci_err_recovery = true;
+ mrioc->block_on_pci_err = true;
+ mrioc->unrecoverable = 1;
+ mpi3mr_stop_watchdog(mrioc);
+ mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
+ return PCI_ERS_RESULT_DISCONNECT;
+ default:
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+}
+
+/**
+ * mpi3mr_pcierr_slot_reset - Post slot reset callback
+ * @pdev: PCI device instance
+ *
+ * This function is called by the PCI error recovery driver
+ * after a slot or link reset issued by it for the recovery, the
+ * driver is expected to bring back the controller and
+ * initialize it.
+ *
+ * This function restores PCI state and reinitializes controller
+ * resources and the controller, this blocks for any pending
+ * reset to complete.
+ *
+ * Returns: PCI_ERS_RESULT_DISCONNECT on failure or
+ * PCI_ERS_RESULT_RECOVERED
+ */
+static pci_ers_result_t mpi3mr_pcierr_slot_reset(struct pci_dev *pdev)
+{
+ struct Scsi_Host *shost;
+ struct mpi3mr_ioc *mrioc;
+ unsigned int timeout = MPI3MR_RESET_TIMEOUT;
+
+ dev_info(&pdev->dev, "%s: callback invoked\n", __func__);
+
+ shost = pci_get_drvdata(pdev);
+ mrioc = shost_priv(shost);
+
+ do {
+ if (mrioc->reset_in_progress)
+ ssleep(1);
+ else
+ break;
+ } while (--timeout);
+
+ if (!timeout)
+ goto out_failed;
+
+ pci_restore_state(pdev);
+
+ if (mpi3mr_setup_resources(mrioc)) {
+ ioc_err(mrioc, "setup resources failed\n");
+ goto out_failed;
+ }
+ mrioc->unrecoverable = 0;
+ mrioc->pci_err_recovery = false;
+
+ if (mpi3mr_soft_reset_handler(mrioc, MPI3MR_RESET_FROM_FIRMWARE, 0))
+ goto out_failed;
+
+ return PCI_ERS_RESULT_RECOVERED;
+
+out_failed:
+ mrioc->unrecoverable = 1;
+ mrioc->block_on_pci_err = false;
+ scsi_unblock_requests(shost);
+ mpi3mr_start_watchdog(mrioc);
+ return PCI_ERS_RESULT_DISCONNECT;
+}
+
+/**
+ * mpi3mr_pcierr_resume - PCI error recovery resume
+ * callback
+ * @pdev: PCI device instance
+ *
+ * This function enables all I/O and IOCTLs post reset issued as
+ * part of the PCI error recovery
+ *
+ * Return: Nothing.
+ */
+static void mpi3mr_pcierr_resume(struct pci_dev *pdev)
+{
+ struct Scsi_Host *shost;
+ struct mpi3mr_ioc *mrioc;
+
+ dev_info(&pdev->dev, "%s: callback invoked\n", __func__);
+
+ shost = pci_get_drvdata(pdev);
+ mrioc = shost_priv(shost);
+
+ if (mrioc->block_on_pci_err) {
+ mrioc->block_on_pci_err = false;
+ scsi_unblock_requests(shost);
+ mpi3mr_start_watchdog(mrioc);
+ }
+}
+
+/**
+ * mpi3mr_pcierr_mmio_enabled - PCI error recovery callback
+ * @pdev: PCI device instance
+ *
+ * This is called only if mpi3mr_pcierr_error_detected returns
+ * PCI_ERS_RESULT_CAN_RECOVER.
+ *
+ * Return: PCI_ERS_RESULT_DISCONNECT when the controller is
+ * unrecoverable or when the shost/mrioc reference cannot be
+ * found, else return PCI_ERS_RESULT_RECOVERED
+ */
+static pci_ers_result_t mpi3mr_pcierr_mmio_enabled(struct pci_dev *pdev)
+{
+ struct Scsi_Host *shost;
+ struct mpi3mr_ioc *mrioc;
+
+ dev_info(&pdev->dev, "%s: callback invoked\n", __func__);
+
+ shost = pci_get_drvdata(pdev);
+ mrioc = shost_priv(shost);
+
+ if (mrioc->unrecoverable)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
static const struct pci_device_id mpi3mr_pci_id_table[] = {
{
PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
@@ -5563,6 +5754,13 @@ static const struct pci_device_id mpi3mr_pci_id_table[] = {
};
MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
+static struct pci_error_handlers mpi3mr_err_handler = {
+ .error_detected = mpi3mr_pcierr_error_detected,
+ .mmio_enabled = mpi3mr_pcierr_mmio_enabled,
+ .slot_reset = mpi3mr_pcierr_slot_reset,
+ .resume = mpi3mr_pcierr_resume,
+};
+
static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume);
static struct pci_driver mpi3mr_pci_driver = {
@@ -5571,6 +5769,7 @@ static struct pci_driver mpi3mr_pci_driver = {
.probe = mpi3mr_probe,
.remove = mpi3mr_remove,
.shutdown = mpi3mr_shutdown,
+ .err_handler = &mpi3mr_err_handler,
.driver.pm = &mpi3mr_pm_ops,
};
--
2.31.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH v4 2/3] mpi3mr: Prevent PCI writes from driver during PCI error recovery
2024-06-26 18:26 [PATCH v4 0/3] mpi3mr: Support PCI Error Recovery Sumit Saxena
2024-06-26 18:26 ` [PATCH v4 1/3] mpi3mr: Support PCI Error Recovery callback handlers Sumit Saxena
@ 2024-06-26 18:26 ` Sumit Saxena
2024-06-26 18:26 ` [PATCH v4 3/3] mpi3mr: driver version update Sumit Saxena
2 siblings, 0 replies; 4+ messages in thread
From: Sumit Saxena @ 2024-06-26 18:26 UTC (permalink / raw)
To: martin.petersen, helgaas, sathya.prakash, sumit.saxena,
chandrakanth.patil, prayas.patel
Cc: linux-scsi, linux-pci, Ranjan Kumar
[-- Attachment #1: Type: text/plain, Size: 13540 bytes --]
Prevent interaction with the hardware while the error recovery in progress.
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
---
drivers/scsi/mpi3mr/mpi3mr.h | 1 +
drivers/scsi/mpi3mr/mpi3mr_app.c | 28 +++++++++------
drivers/scsi/mpi3mr/mpi3mr_fw.c | 22 +++++++++---
drivers/scsi/mpi3mr/mpi3mr_os.c | 49 +++++++++++++++++++++++---
drivers/scsi/mpi3mr/mpi3mr_transport.c | 39 +++++++++++++++++---
5 files changed, 114 insertions(+), 25 deletions(-)
diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h
index 2b1d5645ba9b..e99bb8ec428c 100644
--- a/drivers/scsi/mpi3mr/mpi3mr.h
+++ b/drivers/scsi/mpi3mr/mpi3mr.h
@@ -519,6 +519,7 @@ struct mpi3mr_throttle_group_info {
/* HBA port flags */
#define MPI3MR_HBA_PORT_FLAG_DIRTY 0x01
+#define MPI3MR_HBA_PORT_FLAG_NEW 0x02
/* IOCTL data transfer sge*/
#define MPI3MR_NUM_IOCTL_SGE 256
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c
index f73f265c7921..1834ed8145bc 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -846,7 +846,7 @@ static int mpi3mr_bsg_pel_abort(struct mpi3mr_ioc *mrioc)
dprint_bsg_err(mrioc, "%s: reset in progress\n", __func__);
return -1;
}
- if (mrioc->stop_bsgs) {
+ if (mrioc->stop_bsgs || mrioc->block_on_pci_err) {
dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
return -1;
}
@@ -1492,6 +1492,9 @@ static long mpi3mr_bsg_adp_reset(struct mpi3mr_ioc *mrioc,
goto out;
}
+ if (mrioc->unrecoverable || mrioc->block_on_pci_err)
+ return -EINVAL;
+
sg_copy_to_buffer(job->request_payload.sg_list,
job->request_payload.sg_cnt,
&adpreset, sizeof(adpreset));
@@ -2575,7 +2578,7 @@ static long mpi3mr_bsg_process_mpt_cmds(struct bsg_job *job)
mutex_unlock(&mrioc->bsg_cmds.mutex);
goto out;
}
- if (mrioc->stop_bsgs) {
+ if (mrioc->stop_bsgs || mrioc->block_on_pci_err) {
dprint_bsg_err(mrioc, "%s: bsgs are blocked\n", __func__);
rval = -EAGAIN;
mutex_unlock(&mrioc->bsg_cmds.mutex);
@@ -3105,17 +3108,20 @@ adp_state_show(struct device *dev, struct device_attribute *attr,
enum mpi3mr_iocstate ioc_state;
uint8_t adp_state;
- ioc_state = mpi3mr_get_iocstate(mrioc);
- if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
- adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
- else if ((mrioc->reset_in_progress) || (mrioc->stop_bsgs))
+ if (mrioc->reset_in_progress || mrioc->stop_bsgs ||
+ mrioc->block_on_pci_err)
adp_state = MPI3MR_BSG_ADPSTATE_IN_RESET;
- else if (ioc_state == MRIOC_STATE_FAULT)
- adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
- else
- adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+ else {
+ ioc_state = mpi3mr_get_iocstate(mrioc);
+ if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
+ adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
+ else if (ioc_state == MRIOC_STATE_FAULT)
+ adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
+ else
+ adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
+ }
- return sysfs_emit(buf, "%u\n", adp_state);
+ return snprintf(buf, PAGE_SIZE, "%u\n", adp_state);
}
static DEVICE_ATTR_RO(adp_state);
diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 458c856dda4b..c196dc14ad20 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -608,7 +608,7 @@ int mpi3mr_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
mrioc = (struct mpi3mr_ioc *)shost->hostdata;
if ((mrioc->reset_in_progress || mrioc->prepare_for_reset ||
- mrioc->unrecoverable))
+ mrioc->unrecoverable || mrioc->pci_err_recovery))
return 0;
num_entries = mpi3mr_process_op_reply_q(mrioc,
@@ -1693,6 +1693,12 @@ int mpi3mr_admin_request_post(struct mpi3mr_ioc *mrioc, void *admin_req,
retval = -EAGAIN;
goto out;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "admin request queue submission failed due to pci error recovery in progress\n");
+ retval = -EAGAIN;
+ goto out;
+ }
+
areq_entry = (u8 *)mrioc->admin_req_base +
(areq_pi * MPI3MR_ADMIN_REQ_FRAME_SZ);
memset(areq_entry, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
@@ -2363,6 +2369,11 @@ int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc,
retval = -EAGAIN;
goto out;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "operational request queue submission failed due to pci error recovery in progress\n");
+ retval = -EAGAIN;
+ goto out;
+ }
segment_base_addr = segments[pi / op_req_q->segment_qd].segment;
req_entry = (u8 *)segment_base_addr +
@@ -2627,7 +2638,7 @@ static void mpi3mr_watchdog_work(struct work_struct *work)
union mpi3mr_trigger_data trigger_data;
u16 reset_reason = MPI3MR_RESET_FROM_FAULT_WATCH;
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return;
if (!mrioc->unrecoverable && !pci_device_is_present(mrioc->pdev)) {
@@ -4268,7 +4279,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
goto out_failed_noretry;
}
- if (is_resume) {
+ if (is_resume || mrioc->block_on_pci_err) {
dprint_reset(mrioc, "setting up single ISR\n");
retval = mpi3mr_setup_isr(mrioc, 1);
if (retval) {
@@ -4319,7 +4330,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume)
goto out_failed;
}
- if (is_resume) {
+ if (is_resume || mrioc->block_on_pci_err) {
dprint_reset(mrioc, "setting up multiple ISR\n");
retval = mpi3mr_setup_isr(mrioc, 0);
if (retval) {
@@ -4807,7 +4818,8 @@ void mpi3mr_cleanup_ioc(struct mpi3mr_ioc *mrioc)
ioc_state = mpi3mr_get_iocstate(mrioc);
- if ((!mrioc->unrecoverable) && (!mrioc->reset_in_progress) &&
+ if (!mrioc->unrecoverable && !mrioc->reset_in_progress &&
+ !mrioc->pci_err_recovery &&
(ioc_state == MRIOC_STATE_READY)) {
if (mpi3mr_issue_and_process_mur(mrioc,
MPI3MR_RESET_FROM_CTLR_CLEANUP))
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index b71cf273c41e..5d720fa195a1 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -956,7 +956,7 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
int retval = 0;
struct mpi3mr_tgt_dev *tgtdev;
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return -1;
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
@@ -2007,6 +2007,7 @@ static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
struct mpi3_device_page0 *dev_pg0 = NULL;
u16 perst_id, handle, dev_info;
struct mpi3_device0_sas_sata_format *sasinf = NULL;
+ unsigned int timeout;
mpi3mr_fwevt_del_from_list(mrioc, fwevt);
mrioc->current_event = fwevt;
@@ -2097,8 +2098,18 @@ static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
}
case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
{
- while (mrioc->device_refresh_on)
+ timeout = MPI3MR_RESET_TIMEOUT * 2;
+ while ((mrioc->device_refresh_on || mrioc->block_on_pci_err) &&
+ !mrioc->unrecoverable && !mrioc->pci_err_recovery) {
msleep(500);
+ if (!timeout--) {
+ mrioc->unrecoverable = 1;
+ break;
+ }
+ }
+
+ if (mrioc->unrecoverable || mrioc->pci_err_recovery)
+ break;
dprint_event_bh(mrioc,
"scan for non responding and newly added devices after soft reset started\n");
@@ -3796,6 +3807,13 @@ int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
mutex_unlock(&drv_cmd->mutex);
goto out;
}
+ if (mrioc->block_on_pci_err) {
+ retval = -1;
+ dprint_tm(mrioc, "sending task management failed due to\n"
+ "pci error recovery in progress\n");
+ mutex_unlock(&drv_cmd->mutex);
+ goto out;
+ }
drv_cmd->state = MPI3MR_CMD_PENDING;
drv_cmd->is_waiting = 1;
@@ -4181,6 +4199,7 @@ static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
struct mpi3mr_sdev_priv_data *sdev_priv_data;
u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
int retval = FAILED;
+ unsigned int timeout = MPI3MR_RESET_TIMEOUT;
sdev_priv_data = scmd->device->hostdata;
if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
@@ -4191,12 +4210,24 @@ static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
mpi3mr_wait_for_host_io(mrioc,
MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
- if (!mpi3mr_get_fw_pending_ios(mrioc))
+ if (!mpi3mr_get_fw_pending_ios(mrioc)) {
+ while (mrioc->reset_in_progress ||
+ mrioc->prepare_for_reset ||
+ mrioc->block_on_pci_err) {
+ ssleep(1);
+ if (!timeout--) {
+ retval = FAILED;
+ goto out;
+ }
+ }
retval = SUCCESS;
+ goto out;
+ }
}
if (retval == FAILED)
mpi3mr_print_pending_host_io(mrioc);
+out:
sdev_printk(KERN_INFO, scmd->device,
"Bus reset is %s for scmd(%p)\n",
((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
@@ -4879,7 +4910,8 @@ static int mpi3mr_qcmd(struct Scsi_Host *shost,
goto out;
}
- if (mrioc->reset_in_progress) {
+ if (mrioc->reset_in_progress || mrioc->prepare_for_reset
+ || mrioc->block_on_pci_err) {
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
@@ -5362,7 +5394,14 @@ static void mpi3mr_remove(struct pci_dev *pdev)
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
- if (!pci_device_is_present(mrioc->pdev)) {
+ if (mrioc->block_on_pci_err) {
+ mrioc->block_on_pci_err = false;
+ scsi_unblock_requests(shost);
+ mrioc->unrecoverable = 1;
+ }
+
+ if (!pci_device_is_present(mrioc->pdev) ||
+ mrioc->pci_err_recovery) {
mrioc->unrecoverable = 1;
mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
}
diff --git a/drivers/scsi/mpi3mr/mpi3mr_transport.c b/drivers/scsi/mpi3mr/mpi3mr_transport.c
index 329cc6ec3b58..8612780f6e9e 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_transport.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_transport.c
@@ -151,6 +151,11 @@ static int mpi3mr_report_manufacture(struct mpi3mr_ioc *mrioc,
return -EFAULT;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
+ return -EFAULT;
+ }
+
data_out_sz = sizeof(struct rep_manu_request);
data_in_sz = sizeof(struct rep_manu_reply);
data_out = dma_alloc_coherent(&mrioc->pdev->dev,
@@ -790,6 +795,12 @@ static int mpi3mr_set_identify(struct mpi3mr_ioc *mrioc, u16 handle,
return -EFAULT;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "%s: pci error recovery in progress!\n",
+ __func__);
+ return -EFAULT;
+ }
+
if ((mpi3mr_cfg_get_dev_pg0(mrioc, &ioc_status, &device_pg0,
sizeof(device_pg0), MPI3_DEVICE_PGAD_FORM_HANDLE, handle))) {
ioc_err(mrioc, "%s: device page0 read failed\n", __func__);
@@ -1007,6 +1018,9 @@ mpi3mr_alloc_hba_port(struct mpi3mr_ioc *mrioc, u16 port_id)
hba_port->port_id = port_id;
ioc_info(mrioc, "hba_port entry: %p, port: %d is added to hba_port list\n",
hba_port, hba_port->port_id);
+ if (mrioc->reset_in_progress ||
+ mrioc->pci_err_recovery)
+ hba_port->flags = MPI3MR_HBA_PORT_FLAG_NEW;
list_add_tail(&hba_port->list, &mrioc->hba_port_table_list);
return hba_port;
}
@@ -1055,7 +1069,7 @@ void mpi3mr_update_links(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_node *mr_sas_node;
struct mpi3mr_sas_phy *mr_sas_phy;
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return;
spin_lock_irqsave(&mrioc->sas_node_lock, flags);
@@ -1978,7 +1992,7 @@ int mpi3mr_expander_add(struct mpi3mr_ioc *mrioc, u16 handle)
if (!handle)
return -1;
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return -1;
if ((mpi3mr_cfg_get_sas_exp_pg0(mrioc, &ioc_status, &expander_pg0,
@@ -2184,7 +2198,7 @@ void mpi3mr_expander_node_remove(struct mpi3mr_ioc *mrioc,
/* remove sibling ports attached to this expander */
list_for_each_entry_safe(mr_sas_port, next,
&sas_expander->sas_port_list, port_list) {
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return;
if (mr_sas_port->remote_identify.device_type ==
SAS_END_DEVICE)
@@ -2234,7 +2248,7 @@ void mpi3mr_expander_remove(struct mpi3mr_ioc *mrioc, u64 sas_address,
struct mpi3mr_sas_node *sas_expander;
unsigned long flags;
- if (mrioc->reset_in_progress)
+ if (mrioc->reset_in_progress || mrioc->pci_err_recovery)
return;
if (!hba_port)
@@ -2545,6 +2559,11 @@ static int mpi3mr_get_expander_phy_error_log(struct mpi3mr_ioc *mrioc,
return -EFAULT;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
+ return -EFAULT;
+ }
+
data_out_sz = sizeof(struct phy_error_log_request);
data_in_sz = sizeof(struct phy_error_log_reply);
sz = data_out_sz + data_in_sz;
@@ -2804,6 +2823,12 @@ mpi3mr_expander_phy_control(struct mpi3mr_ioc *mrioc,
return -EFAULT;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "%s: pci error recovery in progress!\n",
+ __func__);
+ return -EFAULT;
+ }
+
data_out_sz = sizeof(struct phy_control_request);
data_in_sz = sizeof(struct phy_control_reply);
sz = data_out_sz + data_in_sz;
@@ -3227,6 +3252,12 @@ mpi3mr_transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
goto out;
}
+ if (mrioc->pci_err_recovery) {
+ ioc_err(mrioc, "%s: pci error recovery in progress!\n", __func__);
+ rc = -EFAULT;
+ goto out;
+ }
+
rc = mpi3mr_map_smp_buffer(&mrioc->pdev->dev, &job->request_payload,
&dma_addr_out, &dma_len_out, &addr_out);
if (rc)
--
2.31.1
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