From 707e09bd867cee4cd0e5bff0a67513aa0232fcec Mon Sep 17 00:00:00 2001 From: "Yang, Bo" Date: Tue, 12 Oct 2010 07:20:27 -0600 Subject: [PATCH] [SCSI] megaraid_sas: Add three times Online controller reset If fw didn't raise the interrupt with the fw state change to driver and fw goes to failure state, driver Will check the FW state in driver's timeout routine and issue the reset if need. Driver will do the OCR upto three times until kill adapter. Also driver will issue OCR before driver kill adapter even if fw in operational state. Signed-off-by Bo Yang Signed-off-by: James Bottomley --- drivers/scsi/megaraid/megaraid_sas.c | 70 +++++++++++++++++++++++++++- 1 file changed, 69 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index 41ffc205724f..a8a2666831d3 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -728,6 +728,10 @@ static int megasas_check_reset_gen2(struct megasas_instance *instance, struct megasas_register_set __iomem *regs) { + if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { + return 1; + } + return 0; } @@ -940,6 +944,7 @@ megasas_make_sgl_skinny(struct megasas_instance *instance, mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); mfi_sgl->sge_skinny[i].phys_addr = sg_dma_address(os_sgl); + mfi_sgl->sge_skinny[i].flag = 0; } } return sge_count; @@ -1567,6 +1572,28 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr) } } +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance); + +static void +process_fw_state_change_wq(struct work_struct *work); + +void megasas_do_ocr(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; + } + instance->instancet->disable_intr(instance->reg_set); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + process_fw_state_change_wq(&instance->work_init); +} + /** * megasas_wait_for_outstanding - Wait for all outstanding cmds * @instance: Adapter soft state @@ -1584,6 +1611,8 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance) unsigned long flags; struct list_head clist_local; struct megasas_cmd *reset_cmd; + u32 fw_state; + u8 kill_adapter_flag; spin_lock_irqsave(&instance->hba_lock, flags); adprecovery = instance->adprecovery; @@ -1669,7 +1698,45 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance) msleep(1000); } - if (atomic_read(&instance->fw_outstanding)) { + i = 0; + kill_adapter_flag = 0; + do { + fw_state = instance->instancet->read_fw_status_reg( + instance->reg_set) & MFI_STATE_MASK; + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + if (i == 3) { + kill_adapter_flag = 2; + break; + } + megasas_do_ocr(instance); + kill_adapter_flag = 1; + + /* wait for 1 secs to let FW finish the pending cmds */ + msleep(1000); + } + i++; + } while (i <= 3); + + if (atomic_read(&instance->fw_outstanding) && + !kill_adapter_flag) { + if (instance->disableOnlineCtrlReset == 0) { + + megasas_do_ocr(instance); + + /* wait for 5 secs to let FW finish the pending cmds */ + for (i = 0; i < wait_time; i++) { + int outstanding = + atomic_read(&instance->fw_outstanding); + if (!outstanding) + return SUCCESS; + msleep(1000); + } + } + } + + if (atomic_read(&instance->fw_outstanding) || + (kill_adapter_flag == 2)) { printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); /* * Send signal to FW to stop processing any pending cmds. @@ -2679,6 +2746,7 @@ static int megasas_create_frame_pool(struct megasas_instance *instance) return -ENOMEM; } + memset(cmd->frame, 0, total_sz); cmd->frame->io.context = cmd->index; cmd->frame->io.pad_0 = 0; }