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* [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235
@ 2022-01-27 23:35 Paul Menzel
  2022-01-27 23:40 ` Damien Le Moal
  0 siblings, 1 reply; 5+ messages in thread
From: Paul Menzel @ 2022-01-27 23:35 UTC (permalink / raw)
  To: Damien Le Moal; +Cc: Paul Menzel, linux-ide, linux-kernel

The 200 ms delay before debouncing the PHY in `sata_link_resume()` is
not needed for the Marvell 88SE9235.

    $ lspci -nn -s 0021:0e:00.0
    0021:0e:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9235 PCIe 2.0 x2 4-port SATA 6 Gb/s Controller [1b4b:9235] (rev 11)

So, remove it. Tested on IBM S822LC with current Linux 5.17-rc1:

Without this patch (with 200 ms delay):

    [    3.358158] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000100 irq 39
    [    3.358175] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000180 irq 39
    [    3.358191] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000200 irq 39
    [    3.358207] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000280 irq 39
    […]
    [    3.677542] ata3: SATA link down (SStatus 0 SControl 300)
    [    3.677719] ata4: SATA link down (SStatus 0 SControl 300)
    [    3.839242] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.839828] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.840029] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.841796] ata2.00: configured for UDMA/133
    [    3.843231] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.844083] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.844313] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.846043] ata1.00: configured for UDMA/133

With patch (no delay):

    [    3.624259] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000100 irq 39
    [    3.624436] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000180 irq 39
    [    3.624452] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000200 irq 39
    [    3.624468] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000280 irq 39
    […]
    [    3.731966] ata3: SATA link down (SStatus 0 SControl 300)
    [    3.732069] ata4: SATA link down (SStatus 0 SControl 300)
    [    3.897448] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.897678] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.898140] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.898175] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.898287] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.898349] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.900070] ata1.00: configured for UDMA/133
    [    3.900166] ata2.00: configured for UDMA/133

Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
---
 drivers/ata/ahci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ab5811ef5a53..edca4e8fd44e 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -582,6 +582,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
 	  .driver_data = board_ahci_yes_fbs },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
+	  .driver_data = board_ahci_no_debounce_delay },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* Re: [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235
  2022-01-27 23:35 [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235 Paul Menzel
@ 2022-01-27 23:40 ` Damien Le Moal
  2022-01-28  9:58   ` Paul Menzel
  0 siblings, 1 reply; 5+ messages in thread
From: Damien Le Moal @ 2022-01-27 23:40 UTC (permalink / raw)
  To: Paul Menzel; +Cc: linux-ide, linux-kernel

On 1/28/22 08:35, Paul Menzel wrote:
> The 200 ms delay before debouncing the PHY in `sata_link_resume()` is
> not needed for the Marvell 88SE9235.
> 
>     $ lspci -nn -s 0021:0e:00.0
>     0021:0e:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9235 PCIe 2.0 x2 4-port SATA 6 Gb/s Controller [1b4b:9235] (rev 11)
> 
> So, remove it. Tested on IBM S822LC with current Linux 5.17-rc1:
> 
> Without this patch (with 200 ms delay):
> 
>     [    3.358158] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000100 irq 39
>     [    3.358175] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000180 irq 39
>     [    3.358191] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000200 irq 39
>     [    3.358207] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000280 irq 39
>     […]
>     [    3.677542] ata3: SATA link down (SStatus 0 SControl 300)
>     [    3.677719] ata4: SATA link down (SStatus 0 SControl 300)
>     [    3.839242] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>     [    3.839828] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>     [    3.840029] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>     [    3.841796] ata2.00: configured for UDMA/133
>     [    3.843231] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>     [    3.844083] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>     [    3.844313] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>     [    3.846043] ata1.00: configured for UDMA/133
> 
> With patch (no delay):
> 
>     [    3.624259] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000100 irq 39
>     [    3.624436] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000180 irq 39
>     [    3.624452] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000200 irq 39
>     [    3.624468] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000280 irq 39
>     […]
>     [    3.731966] ata3: SATA link down (SStatus 0 SControl 300)
>     [    3.732069] ata4: SATA link down (SStatus 0 SControl 300)
>     [    3.897448] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>     [    3.897678] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>     [    3.898140] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>     [    3.898175] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>     [    3.898287] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>     [    3.898349] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>     [    3.900070] ata1.00: configured for UDMA/133
>     [    3.900166] ata2.00: configured for UDMA/133
> 
> Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
> ---
>  drivers/ata/ahci.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index ab5811ef5a53..edca4e8fd44e 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -582,6 +582,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
>  	  .driver_data = board_ahci_yes_fbs },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
>  	  .driver_data = board_ahci_yes_fbs },
> +	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
> +	  .driver_data = board_ahci_no_debounce_delay },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
>  	  .driver_data = board_ahci_yes_fbs },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */

Looks good. But for the commit message, instead of the dmesg copy-paste,
could you simply write the gains in terms of shortened scan time ? That
would make it easier to understand the benefits of the patch. Also,
there is no need for the lspci output.

-- 
Damien Le Moal
Western Digital Research

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235
  2022-01-27 23:40 ` Damien Le Moal
@ 2022-01-28  9:58   ` Paul Menzel
  2022-01-28 10:04     ` Damien Le Moal
  0 siblings, 1 reply; 5+ messages in thread
From: Paul Menzel @ 2022-01-28  9:58 UTC (permalink / raw)
  To: Damien Le Moal; +Cc: linux-ide, linux-kernel

Dear Damien,


Thank you for the quick reply.


Am 28.01.22 um 00:40 schrieb Damien Le Moal:
> On 1/28/22 08:35, Paul Menzel wrote:
>> The 200 ms delay before debouncing the PHY in `sata_link_resume()` is
>> not needed for the Marvell 88SE9235.
>>
>>      $ lspci -nn -s 0021:0e:00.0
>>      0021:0e:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9235 PCIe 2.0 x2 4-port SATA 6 Gb/s Controller [1b4b:9235] (rev 11)
>>
>> So, remove it. Tested on IBM S822LC with current Linux 5.17-rc1:
>>
>> Without this patch (with 200 ms delay):
>>
>>      [    3.358158] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000100 irq 39
>>      [    3.358175] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000180 irq 39
>>      [    3.358191] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000200 irq 39
>>      [    3.358207] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000280 irq 39
>>      […]
>>      [    3.677542] ata3: SATA link down (SStatus 0 SControl 300)
>>      [    3.677719] ata4: SATA link down (SStatus 0 SControl 300)
>>      [    3.839242] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>      [    3.839828] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>      [    3.840029] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>      [    3.841796] ata2.00: configured for UDMA/133
>>      [    3.843231] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>      [    3.844083] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>      [    3.844313] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>      [    3.846043] ata1.00: configured for UDMA/133
>>
>> With patch (no delay):
>>
>>      [    3.624259] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000100 irq 39
>>      [    3.624436] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000180 irq 39
>>      [    3.624452] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000200 irq 39
>>      [    3.624468] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000280 irq 39
>>      […]
>>      [    3.731966] ata3: SATA link down (SStatus 0 SControl 300)
>>      [    3.732069] ata4: SATA link down (SStatus 0 SControl 300)
>>      [    3.897448] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>      [    3.897678] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>      [    3.898140] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>      [    3.898175] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>      [    3.898287] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>      [    3.898349] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>      [    3.900070] ata1.00: configured for UDMA/133
>>      [    3.900166] ata2.00: configured for UDMA/133
>>
>> Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
>> ---
>>   drivers/ata/ahci.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
>> index ab5811ef5a53..edca4e8fd44e 100644
>> --- a/drivers/ata/ahci.c
>> +++ b/drivers/ata/ahci.c
>> @@ -582,6 +582,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
>>   	  .driver_data = board_ahci_yes_fbs },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
>>   	  .driver_data = board_ahci_yes_fbs },
>> +	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
>> +	  .driver_data = board_ahci_no_debounce_delay },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
>>   	  .driver_data = board_ahci_yes_fbs },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
> 
> Looks good. But for the commit message, instead of the dmesg copy-paste,
> could you simply write the gains in terms of shortened scan time ? That
> would make it easier to understand the benefits of the patch.

I can do:

> Tested on IBM S822LC with current Linux 5.17-rc1, and the 200 ms is
> gone, and the drives are still detected.
I would still like to keep the Linux logs, as then it’s clear what I 
tested with (drives), and what ports were populated.

> Also, there is no need for the lspci output.

In my opinion, it prooves I used the correct PCI vendor and device 
codes, and also shows the revision number of the device I tested with.


Kind regards,

Paul

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235
  2022-01-28  9:58   ` Paul Menzel
@ 2022-01-28 10:04     ` Damien Le Moal
  0 siblings, 0 replies; 5+ messages in thread
From: Damien Le Moal @ 2022-01-28 10:04 UTC (permalink / raw)
  To: Paul Menzel; +Cc: linux-ide, linux-kernel

On 1/28/22 18:58, Paul Menzel wrote:
> Dear Damien,
> 
> 
> Thank you for the quick reply.
> 
> 
> Am 28.01.22 um 00:40 schrieb Damien Le Moal:
>> On 1/28/22 08:35, Paul Menzel wrote:
>>> The 200 ms delay before debouncing the PHY in `sata_link_resume()` is
>>> not needed for the Marvell 88SE9235.
>>>
>>>      $ lspci -nn -s 0021:0e:00.0
>>>      0021:0e:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9235 PCIe 2.0 x2 4-port SATA 6 Gb/s Controller [1b4b:9235] (rev 11)
>>>
>>> So, remove it. Tested on IBM S822LC with current Linux 5.17-rc1:
>>>
>>> Without this patch (with 200 ms delay):
>>>
>>>      [    3.358158] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000100 irq 39
>>>      [    3.358175] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000180 irq 39
>>>      [    3.358191] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000200 irq 39
>>>      [    3.358207] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000280 irq 39
>>>      […]
>>>      [    3.677542] ata3: SATA link down (SStatus 0 SControl 300)
>>>      [    3.677719] ata4: SATA link down (SStatus 0 SControl 300)
>>>      [    3.839242] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>>      [    3.839828] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>>      [    3.840029] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>>      [    3.841796] ata2.00: configured for UDMA/133
>>>      [    3.843231] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>>      [    3.844083] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>>      [    3.844313] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>>      [    3.846043] ata1.00: configured for UDMA/133
>>>
>>> With patch (no delay):
>>>
>>>      [    3.624259] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000100 irq 39
>>>      [    3.624436] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000180 irq 39
>>>      [    3.624452] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000200 irq 39
>>>      [    3.624468] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000280 irq 39
>>>      […]
>>>      [    3.731966] ata3: SATA link down (SStatus 0 SControl 300)
>>>      [    3.732069] ata4: SATA link down (SStatus 0 SControl 300)
>>>      [    3.897448] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>>      [    3.897678] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>>>      [    3.898140] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>>      [    3.898175] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
>>>      [    3.898287] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>>      [    3.898349] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
>>>      [    3.900070] ata1.00: configured for UDMA/133
>>>      [    3.900166] ata2.00: configured for UDMA/133
>>>
>>> Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
>>> ---
>>>   drivers/ata/ahci.c | 2 ++
>>>   1 file changed, 2 insertions(+)
>>>
>>> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
>>> index ab5811ef5a53..edca4e8fd44e 100644
>>> --- a/drivers/ata/ahci.c
>>> +++ b/drivers/ata/ahci.c
>>> @@ -582,6 +582,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
>>>   	  .driver_data = board_ahci_yes_fbs },
>>>   	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
>>>   	  .driver_data = board_ahci_yes_fbs },
>>> +	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
>>> +	  .driver_data = board_ahci_no_debounce_delay },
>>>   	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
>>>   	  .driver_data = board_ahci_yes_fbs },
>>>   	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
>>
>> Looks good. But for the commit message, instead of the dmesg copy-paste,
>> could you simply write the gains in terms of shortened scan time ? That
>> would make it easier to understand the benefits of the patch.
> 
> I can do:
> 
>> Tested on IBM S822LC with current Linux 5.17-rc1, and the 200 ms is
>> gone, and the drives are still detected.
> I would still like to keep the Linux logs, as then it’s clear what I 
> tested with (drives), and what ports were populated.

OK. Keep the dmesg log if you want, but add the summary. Something like:

Without this patch (with 200 ms delay): device probe takes X ms

<dmesg>

With patch (no delay): device probe takes Y ms

<dmesg>

> 
>> Also, there is no need for the lspci output.
> 
> In my opinion, it prooves I used the correct PCI vendor and device 
> codes, and also shows the revision number of the device I tested with.

Fine.

> 
> 
> Kind regards,
> 
> Paul


-- 
Damien Le Moal
Western Digital Research

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235
@ 2022-01-31 19:54 Paul Menzel
  0 siblings, 0 replies; 5+ messages in thread
From: Paul Menzel @ 2022-01-31 19:54 UTC (permalink / raw)
  To: Damien Le Moal; +Cc: Paul Menzel, linux-ide, linux-kernel

The 200 ms delay before debouncing the PHY in `sata_link_resume()` is
not needed for the Marvell 88SE9235.

    $ lspci -nn -s 0021:0e:00.0
    0021:0e:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9235 PCIe 2.0 x2 4-port SATA 6 Gb/s Controller [1b4b:9235] (rev 11)

So, remove it. Tested on IBM S822LC with current Linux 5.17-rc1:

Currently, without this patch (with 200 ms delay), device probe for ata1
takes 485 ms:

    [    3.358158] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000100 irq 39
    [    3.358175] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000180 irq 39
    [    3.358191] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000200 irq 39
    [    3.358207] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3fe881000280 irq 39
    […]
    [    3.677542] ata3: SATA link down (SStatus 0 SControl 300)
    [    3.677719] ata4: SATA link down (SStatus 0 SControl 300)
    [    3.839242] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.839828] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.840029] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.841796] ata2.00: configured for UDMA/133
    [    3.843231] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.844083] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.844313] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.846043] ata1.00: configured for UDMA/133

With this patch (no delay) device probe for ata1 takes 273 ms:

    [    3.624259] ata1: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000100 irq 39
    [    3.624436] ata2: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000180 irq 39
    [    3.624452] ata3: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000200 irq 39
    [    3.624468] ata4: SATA max UDMA/133 abar m2048@0x3fe881000000 port 0x3f e881000280 irq 39
    […]
    [    3.731966] ata3: SATA link down (SStatus 0 SControl 300)
    [    3.732069] ata4: SATA link down (SStatus 0 SControl 300)
    [    3.897448] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.897678] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
    [    3.898140] ata1.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.898175] ata2.00: ATA-10: ST1000NX0313         00LY266 00LY265IBM, BE33, max UDMA/133
    [    3.898287] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.898349] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 32), AA
    [    3.900070] ata1.00: configured for UDMA/133
    [    3.900166] ata2.00: configured for UDMA/133

Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
---
 drivers/ata/ahci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ab5811ef5a53..edca4e8fd44e 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -582,6 +582,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
 	  .driver_data = board_ahci_yes_fbs },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
+	  .driver_data = board_ahci_no_debounce_delay },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2022-01-31 19:55 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-27 23:35 [PATCH] ata: ahci: Skip 200 ms debounce delay for Marvell 88SE9235 Paul Menzel
2022-01-27 23:40 ` Damien Le Moal
2022-01-28  9:58   ` Paul Menzel
2022-01-28 10:04     ` Damien Le Moal
2022-01-31 19:54 Paul Menzel

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