[PATCH V2] scsi: ufs: ufs-qcom: add fixup_dev_quirks vops

[PATCH V2] scsi: ufs: ufs-qcom: add fixup_dev_quirks vops

[Manish Pandey]

Add fixup_dev_quirk vops in QCOM UFS platforms and provide an initial
vendor-specific device quirk table to add UFS device specific quirks
which are enabled only for specified UFS devices.

Micron and Skhynix UFS device needs DELAY_BEFORE_LPM quirk to have a
delay before VCC is powered off.

Toshiba UFS devices require delay after VCC power rail is turned-off
in QCOM platforms. Hence add Toshiba vendor ID and DELAY_AFTER_LPM
quirk for Toshiba UFS devices in QCOM platforms.

Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
---
 drivers/ufs/host/ufs-qcom.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 810e637047d0..9dbfbe643e5e 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -834,6 +834,25 @@ static int ufs_qcom_apply_dev_quirks(struct ufs_hba *hba)
 	return err;
 }
 
+/* UFS device-specific quirks */
+static struct ufs_dev_quirk ufs_qcom_dev_fixups[] = {
+	{ .wmanufacturerid = UFS_VENDOR_MICRON,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
+	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
+	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
+	  .model = UFS_ANY_MODEL,
+	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
+	{}
+};
+
+static void ufs_qcom_fixup_dev_quirks(struct ufs_hba *hba)
+{
+	ufshcd_fixup_dev_quirks(hba, ufs_qcom_dev_fixups);
+}
+
 static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
 {
 	return ufshci_version(2, 0);
@@ -1798,6 +1817,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
 	.link_startup_notify    = ufs_qcom_link_startup_notify,
 	.pwr_change_notify	= ufs_qcom_pwr_change_notify,
 	.apply_dev_quirks	= ufs_qcom_apply_dev_quirks,
+	.fixup_dev_quirks       = ufs_qcom_fixup_dev_quirks,
 	.suspend		= ufs_qcom_suspend,
 	.resume			= ufs_qcom_resume,
 	.dbg_register_dump	= ufs_qcom_dump_dbg_regs,
-- 
2.17.1

Re: [PATCH V2] scsi: ufs: ufs-qcom: add fixup_dev_quirks vops

[Manivannan Sadhasivam]

On Wed, Aug 28, 2024 at 07:10:32PM +0530, Manish Pandey wrote:
> Add fixup_dev_quirk vops in QCOM UFS platforms and provide an initial
> vendor-specific device quirk table to add UFS device specific quirks
> which are enabled only for specified UFS devices.
> 

Why the quirks are enabled only for Qcom platforms? If these are required by the
UFS device, then they should be added to ufs_fixups[] in ufshcd.c.

> Micron and Skhynix UFS device needs DELAY_BEFORE_LPM quirk to have a
> delay before VCC is powered off.
> 

Micron fix is already part of ufs_fixups[].

> Toshiba UFS devices require delay after VCC power rail is turned-off
> in QCOM platforms. Hence add Toshiba vendor ID and DELAY_AFTER_LPM
> quirk for Toshiba UFS devices in QCOM platforms.
> 

This sounds like the issue is specific to Qcom platforms only.

> Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
> ---

Where is the changelog?

- Mani

>  drivers/ufs/host/ufs-qcom.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index 810e637047d0..9dbfbe643e5e 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -834,6 +834,25 @@ static int ufs_qcom_apply_dev_quirks(struct ufs_hba *hba)
>  	return err;
>  }
>  
> +/* UFS device-specific quirks */
> +static struct ufs_dev_quirk ufs_qcom_dev_fixups[] = {
> +	{ .wmanufacturerid = UFS_VENDOR_MICRON,
> +	  .model = UFS_ANY_MODEL,
> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
> +	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
> +	  .model = UFS_ANY_MODEL,
> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
> +	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
> +	  .model = UFS_ANY_MODEL,
> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
> +	{}
> +};
> +
> +static void ufs_qcom_fixup_dev_quirks(struct ufs_hba *hba)
> +{
> +	ufshcd_fixup_dev_quirks(hba, ufs_qcom_dev_fixups);
> +}
> +
>  static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
>  {
>  	return ufshci_version(2, 0);
> @@ -1798,6 +1817,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
>  	.link_startup_notify    = ufs_qcom_link_startup_notify,
>  	.pwr_change_notify	= ufs_qcom_pwr_change_notify,
>  	.apply_dev_quirks	= ufs_qcom_apply_dev_quirks,
> +	.fixup_dev_quirks       = ufs_qcom_fixup_dev_quirks,
>  	.suspend		= ufs_qcom_suspend,
>  	.resume			= ufs_qcom_resume,
>  	.dbg_register_dump	= ufs_qcom_dump_dbg_regs,
> -- 
> 2.17.1
> 

-- 
மணிவண்ணன் சதாசிவம்

Re: [PATCH V2] scsi: ufs: ufs-qcom: add fixup_dev_quirks vops

[MANISH PANDEY]

On 8/28/2024 7:38 PM, Manivannan Sadhasivam wrote:
> On Wed, Aug 28, 2024 at 07:10:32PM +0530, Manish Pandey wrote:
>> Add fixup_dev_quirk vops in QCOM UFS platforms and provide an initial
>> vendor-specific device quirk table to add UFS device specific quirks
>> which are enabled only for specified UFS devices.
>>
> 
> Why the quirks are enabled only for Qcom platforms? If these are required by the
> UFS device, then they should be added to ufs_fixups[] in ufshcd.c.
> 
As of now, we are not sure if the same would be applicable to other 
vendors as well, so avoiding to add in ufs_fixups[].

>> Micron and Skhynix UFS device needs DELAY_BEFORE_LPM quirk to have a
>> delay before VCC is powered off.
>>
> 
> Micron fix is already part of ufs_fixups[].
Thanks for guidance, will take care in next patch set.
> 
>> Toshiba UFS devices require delay after VCC power rail is turned-off
>> in QCOM platforms. Hence add Toshiba vendor ID and DELAY_AFTER_LPM
>> quirk for Toshiba UFS devices in QCOM platforms.
>>
> 
> This sounds like the issue is specific to Qcom platforms only.
> 
Not sure, if for other vendors it is required. Hence adding for Qcom only.
>> Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
>> ---
> 
> Where is the changelog?
> 
> - Mani
> 
>>   drivers/ufs/host/ufs-qcom.c | 20 ++++++++++++++++++++
>>   1 file changed, 20 insertions(+)
>>
>> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
>> index 810e637047d0..9dbfbe643e5e 100644
>> --- a/drivers/ufs/host/ufs-qcom.c
>> +++ b/drivers/ufs/host/ufs-qcom.c
>> @@ -834,6 +834,25 @@ static int ufs_qcom_apply_dev_quirks(struct ufs_hba *hba)
>>   	return err;
>>   }
>>   
>> +/* UFS device-specific quirks */
>> +static struct ufs_dev_quirk ufs_qcom_dev_fixups[] = {
>> +	{ .wmanufacturerid = UFS_VENDOR_MICRON,
>> +	  .model = UFS_ANY_MODEL,
>> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
>> +	{ .wmanufacturerid = UFS_VENDOR_SKHYNIX,
>> +	  .model = UFS_ANY_MODEL,
>> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM },
>> +	{ .wmanufacturerid = UFS_VENDOR_TOSHIBA,
>> +	  .model = UFS_ANY_MODEL,
>> +	  .quirk = UFS_DEVICE_QUIRK_DELAY_AFTER_LPM },
>> +	{}
>> +};
>> +
>> +static void ufs_qcom_fixup_dev_quirks(struct ufs_hba *hba)
>> +{
>> +	ufshcd_fixup_dev_quirks(hba, ufs_qcom_dev_fixups);
>> +}
>> +
>>   static u32 ufs_qcom_get_ufs_hci_version(struct ufs_hba *hba)
>>   {
>>   	return ufshci_version(2, 0);
>> @@ -1798,6 +1817,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
>>   	.link_startup_notify    = ufs_qcom_link_startup_notify,
>>   	.pwr_change_notify	= ufs_qcom_pwr_change_notify,
>>   	.apply_dev_quirks	= ufs_qcom_apply_dev_quirks,
>> +	.fixup_dev_quirks       = ufs_qcom_fixup_dev_quirks,
>>   	.suspend		= ufs_qcom_suspend,
>>   	.resume			= ufs_qcom_resume,
>>   	.dbg_register_dump	= ufs_qcom_dump_dbg_regs,
>> -- 
>> 2.17.1
>>
>