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scsi: megaraid_sas: Add check for reset adapter bit 

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>
This commit is contained in:
Shivasharan S 2018-10-16 23:37:42 -07:00 committed by Martin K. Petersen
parent 9155cf30a3
commit de93b40d98
1 changed files with 22 additions and 11 deletions
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15
drivers/scsi/megaraid/megaraid_sas_base.c
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@ -5300,7 +5300,7 @@ 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;
@ -5308,6 +5308,7 @@ 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;
@ -5356,6 +5357,13 @@ static int megasas_init_fw(struct megasas_instance *instance)
}
if (megasas_transition_to_ready(instance, 0)) {
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;
}
if (do_adp_reset) {
atomic_set(&instance->fw_reset_no_pci_access, 1);
instance->instancet->adp_reset
(instance, instance->reg_set);
@ -5364,11 +5372,14 @@ static int megasas_init_fw(struct megasas_instance *instance)
"FW restarted successfully from %s!\n",
__func__);
/*waitting for about 30 second before retry*/
/*waiting for about 30 second before retry*/
ssleep(30);
if (megasas_transition_to_ready(instance, 0))
goto fail_ready_state;
} else {
goto fail_ready_state;
}
}
megasas_init_ctrl_params(instance);