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scsi: ufs: Add a quirk to permit overriding UniPro defaults

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[ Upstream commit b1d0d2eb89 ]

The UniPro specification states that attribute IDs of the following
parameters are vendor-specific so some SoCs could have no regions at the
defined addresses:

 - DME_LocalFC0ProtectionTimeOutVal
 - DME_LocalTC0ReplayTimeOutVal
 - DME_LocalAFC0ReqTimeOutVal

In addition, the following parameters should be set considering the
compatibility between host and device.

 - PA_PWRMODEUSERDATA0
 - PA_PWRMODEUSERDATA1
 - PA_PWRMODEUSERDATA2
 - PA_PWRMODEUSERDATA3
 - PA_PWRMODEUSERDATA4
 - PA_PWRMODEUSERDATA5

Introduce a quirk to allow vendor drivers to override the UniPro defaults.

Link: https://lore.kernel.org/r/1fedd3dea0ccc980913a5995a10510d86a5b01b9.1608513782.git.kwmad.kim@samsung.com
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kiwoong Kim 2020-12-21 10:24:40 +09:00 committed by Greg Kroah-Hartman
parent dbaa266751
commit 2fc01226c2
2 changed files with 26 additions and 18 deletions
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2
drivers/scsi/ufs/ufshcd.c
View file

@ -4153,6 +4153,7 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HSSERIES),
pwr_mode->hs_rate);
if (!(hba->quirks & UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING)) {
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0),
DL_FC0ProtectionTimeOutVal_Default);
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1),
@ -4172,6 +4173,7 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
DL_TC0ReplayTimeOutVal_Default);
ufshcd_dme_set(hba, UIC_ARG_MIB(DME_LocalAFC0ReqTimeOutVal),
DL_AFC0ReqTimeOutVal_Default);
}
ret = ufshcd_uic_change_pwr_mode(hba, pwr_mode->pwr_rx << 4
| pwr_mode->pwr_tx);

6
drivers/scsi/ufs/ufshcd.h
View file

@ -544,6 +544,12 @@ enum ufshcd_quirks {
*/
UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12,
/*
* This quirk needs to disable unipro timeout values
* before power mode change
*/
UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13,
};
enum ufshcd_caps {