diff options
| author | Sayali Lokhande <sayalil@codeaurora.org> | 2017-09-12 14:44:46 +0530 |
|---|---|---|
| committer | Sayali Lokhande <sayalil@codeaurora.org> | 2017-09-14 09:07:25 +0530 |
| commit | 8bcda652a9fd825f0afb46c5bb20ac60234d8655 (patch) | |
| tree | 0e2ec1baaa6c980a19dc68fa3358623f4ce039ca /drivers/scsi | |
| parent | 414269dd957a220c48ca82cb3364412f50d18c98 (diff) | |
scsi: ufs: Get TX and RX FSM states for debug purpose
In case of any UFS error or aborts, read TX and RX
FSM states which can be used for debugging purpose.
Change-Id: I24a989a9e1b07ba904ec639e26736a01769f0593
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 19 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h index 460213536e14..9d532691f001 100644 --- a/drivers/scsi/ufs/ufs-qcom.h +++ b/drivers/scsi/ufs/ufs-qcom.h @@ -21,6 +21,7 @@ #define MAX_UFS_QCOM_HOSTS 1 #define MAX_U32 (~(u32)0) #define MPHY_TX_FSM_STATE 0x41 +#define MPHY_RX_FSM_STATE 0xC1 #define TX_FSM_HIBERN8 0x1 #define HBRN8_POLL_TOUT_MS 100 #define DEFAULT_CLK_RATE_HZ 1000000 diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index c23023f43d30..523a2cff44a3 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -839,6 +839,24 @@ static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap) } } +static void ufshcd_print_fsm_state(struct ufs_hba *hba) +{ + int err = 0, tx_fsm_val = 0, rx_fsm_val = 0; + + err = ufshcd_dme_get(hba, + UIC_ARG_MIB_SEL(MPHY_TX_FSM_STATE, + UIC_ARG_MPHY_TX_GEN_SEL_INDEX(0)), + &tx_fsm_val); + dev_err(hba->dev, "%s: TX_FSM_STATE = %u, err = %d\n", __func__, + tx_fsm_val, err); + err = ufshcd_dme_get(hba, + UIC_ARG_MIB_SEL(MPHY_RX_FSM_STATE, + UIC_ARG_MPHY_RX_GEN_SEL_INDEX(0)), + &rx_fsm_val); + dev_err(hba->dev, "%s: RX_FSM_STATE = %u, err = %d\n", __func__, + rx_fsm_val, err); +} + static void ufshcd_print_host_state(struct ufs_hba *hba) { if (!(hba->ufshcd_dbg_print & UFSHCD_DBG_PRINT_HOST_STATE_EN)) @@ -863,6 +881,7 @@ static void ufshcd_print_host_state(struct ufs_hba *hba) hba->capabilities, hba->caps); dev_err(hba->dev, "quirks=0x%x, dev. quirks=0x%x\n", hba->quirks, hba->dev_quirks); + ufshcd_print_fsm_state(hba); } /** |