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Commit 8bcda652 authored by Sayali Lokhande's avatar Sayali Lokhande
Browse files

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: default avatarSayali Lokhande <sayalil@codeaurora.org>
parent 414269dd

drivers/scsi/ufs/ufs-qcom.h

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/scsi/ufs/ufshcd.c

+19 −0
Original line number Diff line number Diff line
@@ -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);

}



/**