diff options
| author | adam radford <aradford@gmail.com> | 2011-05-11 18:34:08 -0700 |
|---|---|---|
| committer | James Bottomley <jbottomley@parallels.com> | 2011-05-24 12:34:59 -0400 |
| commit | 7e70e7336515cd367b9cfcf5379e04808bdcbe96 (patch) | |
| tree | ea850e683c1eaa8690b51fa29dcaeee81ab0e50e /drivers | |
| parent | 70d031f36fa50a53128d0d2b5f95032cd534778b (diff) | |
| download | talos-obmc-linux-7e70e7336515cd367b9cfcf5379e04808bdcbe96.tar.gz talos-obmc-linux-7e70e7336515cd367b9cfcf5379e04808bdcbe96.zip | |
[SCSI] megaraid_sas: Check MFI_REG_STATE.fault.resetAdapter
The following patch for megaraid_sas fixes the function
megasas_reset_fusion() and makes the reset code check
MFI_REG_STATE.fault.resetAdapter.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 4 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 26 |
2 files changed, 18 insertions, 12 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 046dcc672ec1..982ef8364236 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -76,8 +76,8 @@ #define MFI_STATE_READY 0xB0000000 #define MFI_STATE_OPERATIONAL 0xC0000000 #define MFI_STATE_FAULT 0xF0000000 -#define MFI_RESET_REQUIRED 0x00000001 - +#define MFI_RESET_REQUIRED 0x00000001 +#define MFI_RESET_ADAPTER 0x00000002 #define MEGAMFI_FRAME_SIZE 64 /* diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 25dd5ce64d5e..de43795ca90f 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -2010,17 +2010,11 @@ int megasas_reset_fusion(struct Scsi_Host *shost) struct fusion_context *fusion; struct megasas_cmd *cmd_mfi; union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; - u32 host_diag, abs_state; + u32 host_diag, abs_state, status_reg, reset_adapter; instance = (struct megasas_instance *)shost->hostdata; fusion = instance->ctrl_context; - mutex_lock(&instance->reset_mutex); - set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); - instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; - instance->instancet->disable_intr(instance->reg_set); - msleep(1000); - if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { printk(KERN_WARNING "megaraid_sas: Hardware critical error, " "returning FAILED.\n"); @@ -2028,6 +2022,12 @@ int megasas_reset_fusion(struct Scsi_Host *shost) goto out; } + mutex_lock(&instance->reset_mutex); + set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); + instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; + instance->instancet->disable_intr(instance->reg_set); + msleep(1000); + /* First try waiting for commands to complete */ if (megasas_wait_for_outstanding_fusion(instance)) { printk(KERN_WARNING "megaraid_sas: resetting fusion " @@ -2044,7 +2044,12 @@ int megasas_reset_fusion(struct Scsi_Host *shost) } } - if (instance->disableOnlineCtrlReset == 1) { + status_reg = instance->instancet->read_fw_status_reg( + instance->reg_set); + abs_state = status_reg & MFI_STATE_MASK; + reset_adapter = status_reg & MFI_RESET_ADAPTER; + if (instance->disableOnlineCtrlReset || + (abs_state == MFI_STATE_FAULT && !reset_adapter)) { /* Reset not supported, kill adapter */ printk(KERN_WARNING "megaraid_sas: Reset not supported" ", killing adapter.\n"); @@ -2073,6 +2078,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost) /* Check that the diag write enable (DRWE) bit is on */ host_diag = readl(&instance->reg_set->fusion_host_diag); + retry = 0; while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { msleep(100); host_diag = @@ -2110,7 +2116,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost) abs_state = instance->instancet->read_fw_status_reg( - instance->reg_set); + instance->reg_set) & MFI_STATE_MASK; retry = 0; while ((abs_state <= MFI_STATE_FW_INIT) && @@ -2118,7 +2124,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost) msleep(100); abs_state = instance->instancet->read_fw_status_reg( - instance->reg_set); + instance->reg_set) & MFI_STATE_MASK; } if (abs_state <= MFI_STATE_FW_INIT) { printk(KERN_WARNING "megaraid_sas: firmware " |
