diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/aacraid/aacraid.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/aacraid/src.c | 22 |
2 files changed, 17 insertions, 6 deletions
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index c3fdec9d817a..29bf1e60f542 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1231,6 +1231,7 @@ struct src_registers { #define SRC_ODR_SHIFT 12 #define SRC_IDR_SHIFT 9 +#define SRC_MSI_READ_MASK 0x1000 typedef void (*fib_callback)(void *ctxt, struct fib *fibctx); diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c index 09b82d3325fc..3122389f380f 100644 --- a/drivers/scsi/aacraid/src.c +++ b/drivers/scsi/aacraid/src.c @@ -1405,13 +1405,23 @@ void aac_src_access_devreg(struct aac_dev *dev, int mode) static int aac_src_get_sync_status(struct aac_dev *dev) { + int msix_val = 0; + int legacy_val = 0; - int val; + msix_val = src_readl(dev, MUnit.ODR_MSI) & SRC_MSI_READ_MASK ? 1 : 0; - if (dev->msi_enabled) - val = src_readl(dev, MUnit.ODR_MSI) & 0x1000 ? 1 : 0; - else - val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT; + if (!dev->msi_enabled) { + /* + * if Legacy int status indicates cmd is not complete + * sample MSIx register to see if it indiactes cmd complete, + * if yes set the controller in MSIx mode and consider cmd + * completed + */ + legacy_val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT; + if (!(legacy_val & 1) && msix_val) + dev->msi_enabled = 1; + return legacy_val; + } - return val; + return msix_val; } |