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| author | Chandrakanth Patil <chandrakanth.patil@broadcom.com> | 2019-06-25 16:34:24 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-27 00:07:35 -0400 |
| commit | ccf6c1f2e2d737e23124691b9a8eeb1b3fc74458 (patch) | |
| tree | 9f1a74812cb5200310c8fedeea725ff1abc660d3 /drivers/scsi/megaraid/megaraid_sas_fusion.c | |
| parent | 7fa3174b3ef4e517ebb8a08078871ceab705a969 (diff) | |
| download | linux-stable-ccf6c1f2e2d737e23124691b9a8eeb1b3fc74458.tar.gz linux-stable-ccf6c1f2e2d737e23124691b9a8eeb1b3fc74458.tar.bz2 linux-stable-ccf6c1f2e2d737e23124691b9a8eeb1b3fc74458.zip | |
scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault
Issue: Under certain conditions, controller goes in FAULT state after IOC
INIT fired to firmware. Such Fault can be recovered through controller
reset.
Fix: In driver probe context, if firmware fault is observed post IOC INIT,
driver would do controller reset followed by retry logic for IOC INIT
command.
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index b8a5bbf45850..2e711b10ccc2 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1009,6 +1009,7 @@ wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, { int i; struct megasas_header *frame_hdr = &cmd->frame->hdr; + u32 status_reg; u32 msecs = seconds * 1000; @@ -1018,6 +1019,12 @@ wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { rmb(); msleep(20); + if (!(i % 5000)) { + status_reg = instance->instancet->read_fw_status_reg(instance) + & MFI_STATE_MASK; + if (status_reg == MFI_STATE_FAULT) + break; + } } if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) @@ -1720,6 +1727,7 @@ megasas_init_adapter_fusion(struct megasas_instance *instance) struct fusion_context *fusion; u32 scratch_pad_1; int i = 0, count; + u32 status_reg; fusion = instance->ctrl_context; @@ -1802,8 +1810,21 @@ megasas_init_adapter_fusion(struct megasas_instance *instance) if (megasas_alloc_cmds_fusion(instance)) goto fail_alloc_cmds; - if (megasas_ioc_init_fusion(instance)) - goto fail_ioc_init; + if (megasas_ioc_init_fusion(instance)) { + status_reg = instance->instancet->read_fw_status_reg(instance); + if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) && + (status_reg & MFI_RESET_ADAPTER)) { + /* Do a chip reset and then retry IOC INIT once */ + if (megasas_adp_reset_wait_for_ready + (instance, true, 0) == FAILED) + goto fail_ioc_init; + + if (megasas_ioc_init_fusion(instance)) + goto fail_ioc_init; + } else { + goto fail_ioc_init; + } + } megasas_display_intel_branding(instance); if (megasas_get_ctrl_info(instance)) { |