From: Shivasharan S shivasharan.srikanteshwara@broadcom.com
[ Upstream commit de93b40d98ead27ee2f7f7df93fdd4914a6c8d8d ]
For SAS3 and later controllers, FW sets the reset adapter bit indicating the driver to perform a controller reset. Driver needs to check if this bit is set before doing a reset. This reduces the driver probe failure time to 180seconds in case there is a faulty controller connected.
Signed-off-by: Sumit Saxena sumit.saxena@broadcom.com Signed-off-by: Shivasharan S shivasharan.srikanteshwara@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/megaraid/megaraid_sas_base.c | 33 +++++++++++++++-------- 1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index b6fc7c6337610..749f10146f630 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5218,7 +5218,7 @@ static int megasas_init_fw(struct megasas_instance *instance) { u32 max_sectors_1; u32 max_sectors_2, tmp_sectors, msix_enable; - u32 scratch_pad_2, scratch_pad_3, scratch_pad_4; + u32 scratch_pad_2, scratch_pad_3, scratch_pad_4, status_reg; resource_size_t base_addr; struct megasas_register_set __iomem *reg_set; struct megasas_ctrl_info *ctrl_info = NULL; @@ -5226,6 +5226,7 @@ static int megasas_init_fw(struct megasas_instance *instance) int i, j, loop, fw_msix_count = 0; struct IOV_111 *iovPtr; struct fusion_context *fusion; + bool do_adp_reset = true;
fusion = instance->ctrl_context;
@@ -5274,19 +5275,29 @@ static int megasas_init_fw(struct megasas_instance *instance) }
if (megasas_transition_to_ready(instance, 0)) { - atomic_set(&instance->fw_reset_no_pci_access, 1); - instance->instancet->adp_reset - (instance, instance->reg_set); - atomic_set(&instance->fw_reset_no_pci_access, 0); - dev_info(&instance->pdev->dev, - "FW restarted successfully from %s!\n", - __func__); + if (instance->adapter_type >= INVADER_SERIES) { + status_reg = instance->instancet->read_fw_status_reg( + instance->reg_set); + do_adp_reset = status_reg & MFI_RESET_ADAPTER; + }
- /*waitting for about 30 second before retry*/ - ssleep(30); + if (do_adp_reset) { + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset + (instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0); + dev_info(&instance->pdev->dev, + "FW restarted successfully from %s!\n", + __func__); + + /*waiting for about 30 second before retry*/ + ssleep(30);
- if (megasas_transition_to_ready(instance, 0)) + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + } else { goto fail_ready_state; + } }
megasas_init_ctrl_params(instance);