| Message ID | 20230328103801.11198-1-powen.kao@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR | expand |
Hi Po-Wen, On Tue, Mar 28, 2023 at 6:42 PM Po-Wen Kao <powen.kao@mediatek.com> wrote: > > Quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR is introduced for plaforms that > implement different interrupt topology from UFSHCI 4.0 spec. > Some platform raise per hw queue interrupt in addition to > CQES (traditional) when ESI is disabled. > > Enable this quirk will disable CQES and use only per hw queue > interrupt. > > Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> > --- > drivers/ufs/core/ufshcd.c | 8 ++++++-- > include/ufs/ufshcd.h | 7 +++++++ > 2 files changed, 13 insertions(+), 2 deletions(-) Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
On 3/28/23 03:37, Po-Wen Kao wrote: > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index acae4e194ec4..1e1271aca1f2 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -8493,11 +8493,15 @@ static int ufshcd_alloc_mcq(struct ufs_hba *hba) > 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 " : ""); The use of blank lines in the above code is weird. Please make sure there is no blank line inside the declaration block and also that there is a blank line between declarations and statements as required by the kernel coding style. > - ufshcd_enable_intr(hba, UFSHCD_ENABLE_MCQ_INTRS); > + intrs = (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR) ? > + (UFSHCD_ENABLE_MCQ_INTRS & ~MCQ_CQ_EVENT_STATUS) : UFSHCD_ENABLE_MCQ_INTRS; All parentheses in the above expression are superfluous. Please leave these out. Or even better, rewrite the above code as follows: intrs = UFSHCD_ENABLE_MCQ_INTRS; if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR) intrs &= ~MCQ_CQ_EVENT_STATUS; > + > + /* > + * Some platform 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, Isn't this an UFS controller behavior instead of a platform behavior? Please consider changing "platform raises" into "controllers raise". Thanks, Bart.
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index acae4e194ec4..1e1271aca1f2 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8493,11 +8493,15 @@ static int ufshcd_alloc_mcq(struct ufs_hba *hba) 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 = (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR) ? + (UFSHCD_ENABLE_MCQ_INTRS & ~MCQ_CQ_EVENT_STATUS) : UFSHCD_ENABLE_MCQ_INTRS; + + ufshcd_enable_intr(hba, intrs); ufshcd_mcq_make_queues_operational(hba); ufshcd_mcq_config_mac(hba, hba->nutrs); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 25aab8ec4f86..7bb9e1a17154 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -616,6 +616,13 @@ enum ufshcd_quirks { * to reinit the device after switching to maximum gear. */ UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH = 1 << 19, + + /* + * Some platform 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 {
Quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR is introduced for plaforms that implement different interrupt topology from UFSHCI 4.0 spec. Some platform raise per hw queue interrupt in addition to CQES (traditional) when ESI is disabled. Enable this quirk will disable CQES and use only per hw queue interrupt. Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com> --- drivers/ufs/core/ufshcd.c | 8 ++++++-- include/ufs/ufshcd.h | 7 +++++++ 2 files changed, 13 insertions(+), 2 deletions(-)