diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index 4cab5b534b25..38733b6009a4 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -832,6 +832,12 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance) } if (atomic_read(&instance->fw_outstanding)) { + /* + * Send signal to FW to stop processing any pending cmds. + * The controller will be taken offline by the OS now. + */ + writel(MFI_STOP_ADP, + &instance->reg_set->inbound_doorbell); instance->hw_crit_error = 1; return FAILED; } @@ -1229,10 +1235,12 @@ megasas_transition_to_ready(struct megasas_instance* instance) fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; + if (fw_state != MFI_STATE_READY) + printk(KERN_INFO "megasas: Waiting for FW to come to ready" + " state\n"); + while (fw_state != MFI_STATE_READY) { - printk(KERN_INFO "megasas: Waiting for FW to come to ready" - " state\n"); switch (fw_state) { case MFI_STATE_FAULT: @@ -1244,19 +1252,27 @@ megasas_transition_to_ready(struct megasas_instance* instance) /* * Set the CLR bit in inbound doorbell */ - writel(MFI_INIT_CLEAR_HANDSHAKE, + writel(MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, &instance->reg_set->inbound_doorbell); max_wait = 2; cur_state = MFI_STATE_WAIT_HANDSHAKE; break; + case MFI_STATE_BOOT_MESSAGE_PENDING: + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + + max_wait = 10; + cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; + break; + case MFI_STATE_OPERATIONAL: /* - * Bring it to READY state; assuming max wait 2 secs + * Bring it to READY state; assuming max wait 10 secs */ megasas_disable_intr(instance); - writel(MFI_INIT_READY, &instance->reg_set->inbound_doorbell); + writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell); max_wait = 10; cur_state = MFI_STATE_OPERATIONAL; @@ -1323,6 +1339,7 @@ megasas_transition_to_ready(struct megasas_instance* instance) return -ENODEV; } }; + printk(KERN_INFO "megasas: FW now in Ready state\n"); return 0; } @@ -1352,7 +1369,7 @@ static void megasas_teardown_frame_pool(struct megasas_instance *instance) cmd->frame_phys_addr); if (cmd->sense) - pci_pool_free(instance->sense_dma_pool, cmd->frame, + pci_pool_free(instance->sense_dma_pool, cmd->sense, cmd->sense_phys_addr); } @@ -1690,6 +1707,12 @@ static int megasas_init_mfi(struct megasas_instance *instance) * Get various operational parameters from status register */ instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 0x10; /* |