* [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
@ 2016-06-21 23:31 ` Suman Tripathi
0 siblings, 0 replies; 13+ messages in thread
From: Suman Tripathi @ 2016-06-21 23:31 UTC (permalink / raw)
To: linux-arm-kernel
Hi Arnd,
On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
>>
>> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
>> > This patch adds ACPI support for APM X-Gene AHCI controller in
>> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
>> > v3 hardware is fully compliant with ahci_platform driver and requires
>> > no workaround quirk.
>> >
>> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
>> > ---
>> > drivers/ata/ahci_platform.c | 1 +
>> > 1 files changed, 1 insertions(+), 0 deletions(-)
>> >
>> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
>> > index 62a04c8..3395baf 100644
>> > --- a/drivers/ata/ahci_platform.c
>> > +++ b/drivers/ata/ahci_platform.c
>> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
>> >
>> > static const struct acpi_device_id ahci_acpi_match[] = {
>> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
>> > + { "APMC0D33", 0},
>> > {},
>> > };
>> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
>> >
>>
>> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
>
>
> yeah it also works. Just thought that we need something different as
> our's is a non-PCI SATA.
Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
>>
>> added specifically for this purpose. It doesn't seem right to add vendor
>> specific entries for generic hardware in each generic driver.
>>
>> Arnd
>
>
>
>
> --
> Thanks,
> with regards,
> Suman Tripathi
--
Thanks,
with regards,
Suman Tripathi
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
2016-06-21 23:31 ` Suman Tripathi
@ 2016-06-22 10:18 ` Arnd Bergmann
-1 siblings, 0 replies; 13+ messages in thread
From: Arnd Bergmann @ 2016-06-22 10:18 UTC (permalink / raw)
To: linux-arm-kernel
Cc: devicetree, Mark Langsdorf, Suman Tripathi, Jon Masters,
Olof Johansson, patches, linux-ide, Tejun Heo
On Tuesday, June 21, 2016 4:31:38 PM CEST Suman Tripathi wrote:
> On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> >>
> >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> >> > v3 hardware is fully compliant with ahci_platform driver and requires
> >> > no workaround quirk.
> >> >
> >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> >> > ---
> >> > drivers/ata/ahci_platform.c | 1 +
> >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> >> >
> >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> >> > index 62a04c8..3395baf 100644
> >> > --- a/drivers/ata/ahci_platform.c
> >> > +++ b/drivers/ata/ahci_platform.c
> >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> >> >
> >> > static const struct acpi_device_id ahci_acpi_match[] = {
> >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> >> > + { "APMC0D33", 0},
> >> > {},
> >> > };
> >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> >> >
> >>
> >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> >
> >
> > yeah it also works. Just thought that we need something different as
> > our's is a non-PCI SATA.
>
> Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
This was specifically introduced for non-PCI devices, so it should
just work.
Arnd
^ permalink raw reply [flat|nested] 13+ messages in thread* [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
@ 2016-06-22 10:18 ` Arnd Bergmann
0 siblings, 0 replies; 13+ messages in thread
From: Arnd Bergmann @ 2016-06-22 10:18 UTC (permalink / raw)
To: linux-arm-kernel
On Tuesday, June 21, 2016 4:31:38 PM CEST Suman Tripathi wrote:
> On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> >>
> >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> >> > v3 hardware is fully compliant with ahci_platform driver and requires
> >> > no workaround quirk.
> >> >
> >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> >> > ---
> >> > drivers/ata/ahci_platform.c | 1 +
> >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> >> >
> >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> >> > index 62a04c8..3395baf 100644
> >> > --- a/drivers/ata/ahci_platform.c
> >> > +++ b/drivers/ata/ahci_platform.c
> >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> >> >
> >> > static const struct acpi_device_id ahci_acpi_match[] = {
> >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> >> > + { "APMC0D33", 0},
> >> > {},
> >> > };
> >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> >> >
> >>
> >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> >
> >
> > yeah it also works. Just thought that we need something different as
> > our's is a non-PCI SATA.
>
> Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
This was specifically introduced for non-PCI devices, so it should
just work.
Arnd
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
2016-06-21 23:31 ` Suman Tripathi
@ 2016-07-05 9:07 ` Graeme Gregory
-1 siblings, 0 replies; 13+ messages in thread
From: Graeme Gregory @ 2016-07-05 9:07 UTC (permalink / raw)
To: Suman Tripathi
Cc: Arnd Bergmann, devicetree, Mark Langsdorf, linux-ide,
Jon Masters, patches, Tejun Heo, Olof Johansson,
linux-arm-kernel
On Tue, Jun 21, 2016 at 04:31:38PM -0700, Suman Tripathi wrote:
> Hi Arnd,
>
> On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> >>
> >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> >> > v3 hardware is fully compliant with ahci_platform driver and requires
> >> > no workaround quirk.
> >> >
> >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> >> > ---
> >> > drivers/ata/ahci_platform.c | 1 +
> >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> >> >
> >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> >> > index 62a04c8..3395baf 100644
> >> > --- a/drivers/ata/ahci_platform.c
> >> > +++ b/drivers/ata/ahci_platform.c
> >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> >> >
> >> > static const struct acpi_device_id ahci_acpi_match[] = {
> >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> >> > + { "APMC0D33", 0},
> >> > {},
> >> > };
> >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> >> >
> >>
> >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> >
> >
> > yeah it also works. Just thought that we need something different as
> > our's is a non-PCI SATA.
>
> Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
This was discussed when AMD Seattle SoC had the same issue and it was
decided in standards body and on LKML that using PCI device classes for
non PCI devices was fine.
Example from Overdrive DSDT
Device (AHC0)
{
Name (_HID, "AMDI0600") // _HID: Hardware ID
Name (_UID, 0x00) // _UID: Unique ID
Name (_CCA, 0x01) // _CCA: Cache Coherency Attribute
Name (_CLS,
Package (0x03) // _CLS: Class Code
{
0x01,
0x06,
0x01
})
...
Graeme
^ permalink raw reply [flat|nested] 13+ messages in thread* [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
@ 2016-07-05 9:07 ` Graeme Gregory
0 siblings, 0 replies; 13+ messages in thread
From: Graeme Gregory @ 2016-07-05 9:07 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Jun 21, 2016 at 04:31:38PM -0700, Suman Tripathi wrote:
> Hi Arnd,
>
> On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> >>
> >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> >> > v3 hardware is fully compliant with ahci_platform driver and requires
> >> > no workaround quirk.
> >> >
> >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> >> > ---
> >> > drivers/ata/ahci_platform.c | 1 +
> >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> >> >
> >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> >> > index 62a04c8..3395baf 100644
> >> > --- a/drivers/ata/ahci_platform.c
> >> > +++ b/drivers/ata/ahci_platform.c
> >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> >> >
> >> > static const struct acpi_device_id ahci_acpi_match[] = {
> >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> >> > + { "APMC0D33", 0},
> >> > {},
> >> > };
> >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> >> >
> >>
> >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> >
> >
> > yeah it also works. Just thought that we need something different as
> > our's is a non-PCI SATA.
>
> Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
This was discussed when AMD Seattle SoC had the same issue and it was
decided in standards body and on LKML that using PCI device classes for
non PCI devices was fine.
Example from Overdrive DSDT
Device (AHC0)
{
Name (_HID, "AMDI0600") // _HID: Hardware ID
Name (_UID, 0x00) // _UID: Unique ID
Name (_CCA, 0x01) // _CCA: Cache Coherency Attribute
Name (_CLS,
Package (0x03) // _CLS: Class Code
{
0x01,
0x06,
0x01
})
...
Graeme
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
2016-07-05 9:07 ` Graeme Gregory
@ 2016-07-05 18:01 ` Suman Tripathi
-1 siblings, 0 replies; 13+ messages in thread
From: Suman Tripathi @ 2016-07-05 18:01 UTC (permalink / raw)
To: Graeme Gregory
Cc: Arnd Bergmann, devicetree, Mark Langsdorf, linux-ide,
Jon Masters, patches, Tejun Heo, Olof Johansson,
linux-arm-kernel
On Tue, Jul 5, 2016 at 2:07 AM, Graeme Gregory <gg@slimlogic.co.uk> wrote:
>
> On Tue, Jun 21, 2016 at 04:31:38PM -0700, Suman Tripathi wrote:
> > Hi Arnd,
> >
> > On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> > >>
> > >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> > >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> > >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> > >> > v3 hardware is fully compliant with ahci_platform driver and requires
> > >> > no workaround quirk.
> > >> >
> > >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> > >> > ---
> > >> > drivers/ata/ahci_platform.c | 1 +
> > >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> > >> >
> > >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> > >> > index 62a04c8..3395baf 100644
> > >> > --- a/drivers/ata/ahci_platform.c
> > >> > +++ b/drivers/ata/ahci_platform.c
> > >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> > >> >
> > >> > static const struct acpi_device_id ahci_acpi_match[] = {
> > >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> > >> > + { "APMC0D33", 0},
> > >> > {},
> > >> > };
> > >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> > >> >
> > >>
> > >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> > >
> > >
> > > yeah it also works. Just thought that we need something different as
> > > our's is a non-PCI SATA.
> >
> > Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> > non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
>
> This was discussed when AMD Seattle SoC had the same issue and it was
> decided in standards body and on LKML that using PCI device classes for
> non PCI devices was fine.
>
> Example from Overdrive DSDT
>
> Device (AHC0)
> {
> Name (_HID, "AMDI0600") // _HID: Hardware ID
> Name (_UID, 0x00) // _UID: Unique ID
> Name (_CCA, 0x01) // _CCA: Cache Coherency Attribute
> Name (_CLS,
> Package (0x03) // _CLS: Class Code
> {
> 0x01,
> 0x06,
> 0x01
> })
Got it. Will do the same. Thanks !!
>
> ...
>
> Graeme
>
--
Thanks,
with regards,
Suman Tripathi
^ permalink raw reply [flat|nested] 13+ messages in thread* [PATCH] ata: ahci_platform: Add ACPI support for APM X-Gene AHCI controller v3 hardware.
@ 2016-07-05 18:01 ` Suman Tripathi
0 siblings, 0 replies; 13+ messages in thread
From: Suman Tripathi @ 2016-07-05 18:01 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Jul 5, 2016 at 2:07 AM, Graeme Gregory <gg@slimlogic.co.uk> wrote:
>
> On Tue, Jun 21, 2016 at 04:31:38PM -0700, Suman Tripathi wrote:
> > Hi Arnd,
> >
> > On Tue, Jun 21, 2016 at 11:08 AM, Suman Tripathi <stripathi@apm.com> wrote:
> > > On Wed, Jun 15, 2016 at 11:54 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> > >>
> > >> On Wednesday, June 15, 2016 5:44:00 PM CEST suman-tripathi wrote:
> > >> > This patch adds ACPI support for APM X-Gene AHCI controller in
> > >> > ahci_platform driver for v3 hardware. APM X-Gene AHCI controller
> > >> > v3 hardware is fully compliant with ahci_platform driver and requires
> > >> > no workaround quirk.
> > >> >
> > >> > Signed-off-by: Suman Tripathi <stripathi@apm.com>
> > >> > ---
> > >> > drivers/ata/ahci_platform.c | 1 +
> > >> > 1 files changed, 1 insertions(+), 0 deletions(-)
> > >> >
> > >> > diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
> > >> > index 62a04c8..3395baf 100644
> > >> > --- a/drivers/ata/ahci_platform.c
> > >> > +++ b/drivers/ata/ahci_platform.c
> > >> > @@ -86,6 +86,7 @@ MODULE_DEVICE_TABLE(of, ahci_of_match);
> > >> >
> > >> > static const struct acpi_device_id ahci_acpi_match[] = {
> > >> > { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
> > >> > + { "APMC0D33", 0},
> > >> > {},
> > >> > };
> > >> > MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
> > >> >
> > >>
> > >> Doesn't the ACPI_DEVICE_CLASS entry take care of this? I thought it had been
> > >
> > >
> > > yeah it also works. Just thought that we need something different as
> > > our's is a non-PCI SATA.
> >
> > Are you suggesting to introduce a new class ACPI_DEVICE_CLASS for
> > non-pci ahci ? or to reuse the existing PCI_CLASS_STORAGE_SATA_AHCI ?
>
> This was discussed when AMD Seattle SoC had the same issue and it was
> decided in standards body and on LKML that using PCI device classes for
> non PCI devices was fine.
>
> Example from Overdrive DSDT
>
> Device (AHC0)
> {
> Name (_HID, "AMDI0600") // _HID: Hardware ID
> Name (_UID, 0x00) // _UID: Unique ID
> Name (_CCA, 0x01) // _CCA: Cache Coherency Attribute
> Name (_CLS,
> Package (0x03) // _CLS: Class Code
> {
> 0x01,
> 0x06,
> 0x01
> })
Got it. Will do the same. Thanks !!
>
> ...
>
> Graeme
>
--
Thanks,
with regards,
Suman Tripathi
^ permalink raw reply [flat|nested] 13+ messages in thread