From 4d869fe67acccfc436c6030ceaba4779174019a4 Mon Sep 17 00:00:00 2001 From: Stanley Chu Date: Wed, 3 Aug 2022 07:54:34 +0800 Subject: [PATCH] scsi: ufs: ufs-mediatek: Provide detailed description for UIC errors Provide detailed description in logs for UIC errors for easier issue breakdown. Link: https://lore.kernel.org/r/20220802235437.4547-3-stanley.chu@mediatek.com Signed-off-by: Stanley Chu Signed-off-by: Martin K. Petersen --- drivers/ufs/host/ufs-mediatek.c | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index ff6fd8f..62bc3b7 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -46,6 +46,44 @@ static const struct of_device_id ufs_mtk_of_match[] = { {}, }; +/* + * Details of UIC Errors + */ +static const char *const ufs_uic_err_str[] = { + "PHY Adapter Layer", + "Data Link Layer", + "Network Link Layer", + "Transport Link Layer", + "DME" +}; + +static const char *const ufs_uic_pa_err_str[] = { + "PHY error on Lane 0", + "PHY error on Lane 1", + "PHY error on Lane 2", + "PHY error on Lane 3", + "Generic PHY Adapter Error. This should be the LINERESET indication" +}; + +static const char *const ufs_uic_dl_err_str[] = { + "NAC_RECEIVED", + "TCx_REPLAY_TIMER_EXPIRED", + "AFCx_REQUEST_TIMER_EXPIRED", + "FCx_PROTECTION_TIMER_EXPIRED", + "CRC_ERROR", + "RX_BUFFER_OVERFLOW", + "MAX_FRAME_LENGTH_EXCEEDED", + "WRONG_SEQUENCE_NUMBER", + "AFC_FRAME_SYNTAX_ERROR", + "NAC_FRAME_SYNTAX_ERROR", + "EOF_SYNTAX_ERROR", + "FRAME_SYNTAX_ERROR", + "BAD_CTRL_SYMBOL_TYPE", + "PA_INIT_ERROR", + "PA_ERROR_IND_RECEIVED", + "PA_INIT" +}; + static bool ufs_mtk_is_boost_crypt_enabled(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -1309,8 +1347,28 @@ static void ufs_mtk_event_notify(struct ufs_hba *hba, enum ufs_event_type evt, void *data) { unsigned int val = *(u32 *)data; + unsigned long reg; + u8 bit; trace_ufs_mtk_event(evt, val); + + /* Print details of UIC Errors */ + if (evt <= UFS_EVT_DME_ERR) { + dev_info(hba->dev, + "Host UIC Error Code (%s): %08x\n", + ufs_uic_err_str[evt], val); + reg = val; + } + + if (evt == UFS_EVT_PA_ERR) { + for_each_set_bit(bit, ®, ARRAY_SIZE(ufs_uic_pa_err_str)) + dev_info(hba->dev, "%s\n", ufs_uic_pa_err_str[bit]); + } + + if (evt == UFS_EVT_DL_ERR) { + for_each_set_bit(bit, ®, ARRAY_SIZE(ufs_uic_dl_err_str)) + dev_info(hba->dev, "%s\n", ufs_uic_dl_err_str[bit]); + } } /* -- 2.7.4