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scsi: ufs: ufs-qcom: Add support to dump HW and SW hibern8 count

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Add support to dump HW and SW hibern8 enter and exit counts to enhance
the debugging of hibern8 state transitions.

Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
Link: https://lore.kernel.org/r/20250411121345.16859-2-quic_mapa@quicinc.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Manish Pandey 2025-04-11 17:43:43 +05:30 committed by Martin K. Petersen
parent 0af2f6be1b
commit fe016bb54d
2 changed files with 18 additions and 0 deletions
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9
drivers/ufs/host/ufs-qcom.c
View File

@ -1573,6 +1573,15 @@ static void ufs_qcom_dump_dbg_regs(struct ufs_hba *hba)
host = ufshcd_get_variant(hba);
dev_err(hba->dev, "HW_H8_ENTER_CNT=%d\n", ufshcd_readl(hba, REG_UFS_HW_H8_ENTER_CNT));
dev_err(hba->dev, "HW_H8_EXIT_CNT=%d\n", ufshcd_readl(hba, REG_UFS_HW_H8_EXIT_CNT));
dev_err(hba->dev, "SW_H8_ENTER_CNT=%d\n", ufshcd_readl(hba, REG_UFS_SW_H8_ENTER_CNT));
dev_err(hba->dev, "SW_H8_EXIT_CNT=%d\n", ufshcd_readl(hba, REG_UFS_SW_H8_EXIT_CNT));
dev_err(hba->dev, "SW_AFTER_HW_H8_ENTER_CNT=%d\n",
ufshcd_readl(hba, REG_UFS_SW_AFTER_HW_H8_ENTER_CNT));
ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4,
"HCI Vendor Specific Registers ");

9
drivers/ufs/host/ufs-qcom.h
View File

@ -75,6 +75,15 @@ enum {
UFS_UFS_DBG_RD_EDTL_RAM = 0x1900,
};
/* QCOM UFS HC vendor specific Hibern8 count registers */
enum {
REG_UFS_HW_H8_ENTER_CNT = 0x2700,
REG_UFS_SW_H8_ENTER_CNT = 0x2704,
REG_UFS_SW_AFTER_HW_H8_ENTER_CNT = 0x2708,
REG_UFS_HW_H8_EXIT_CNT = 0x270C,
REG_UFS_SW_H8_EXIT_CNT = 0x2710,
};
enum {
UFS_MEM_CQIS_VS = 0x8,
};