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scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR

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Quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR is introduced for hosts that implement a
different interrupt topology from the UFSHCI 4.0 spec.  Some hosts raise
per hw queue interrupt in addition to CQES (traditional) when ESI is
disabled.

Enabling this quirk will disable CQES and use only per hw queue interrupt.

Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
Link: https://lore.kernel.org/r/20230612085817.12275-2-powen.kao@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Po-Wen Kao 2023-06-12 16:58:09 +08:00 committed by Martin K. Petersen
parent ccb23dc343
commit c4ad4f2e66
2 changed files with 12 additions and 1 deletions
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6
drivers/ufs/core/ufshcd.c
View File

@ -8612,11 +8612,15 @@ err:
static void ufshcd_config_mcq(struct ufs_hba *hba)
{
int ret;
u32 intrs;
ret = ufshcd_mcq_vops_config_esi(hba);
dev_info(hba->dev, "ESI %sconfigured\n", ret ? "is not " : "");
ufshcd_enable_intr(hba, UFSHCD_ENABLE_MCQ_INTRS);
intrs = UFSHCD_ENABLE_MCQ_INTRS;
if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR)
intrs &= ~MCQ_CQ_EVENT_STATUS;
ufshcd_enable_intr(hba, intrs);
ufshcd_mcq_make_queues_operational(hba);
ufshcd_mcq_config_mac(hba, hba->nutrs);

7
include/ufs/ufshcd.h
View File

@ -610,6 +610,13 @@ enum ufshcd_quirks {
* to reinit the device after switching to maximum gear.
*/
UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH = 1 << 19,
/*
* Some host raises interrupt (per queue) in addition to
* CQES (traditional) when ESI is disabled.
* Enable this quirk will disable CQES and use per queue interrupt.
*/
UFSHCD_QUIRK_MCQ_BROKEN_INTR = 1 << 20,
};
enum ufshcd_caps {