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SubjectRe: [PATCH 1/2] x86/amd_nb: Add AMD Family 19h A0-AF IDs
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On 6/1/22 17:30, Bjorn Helgaas wrote:
> On Wed, Jun 01, 2022 at 12:21:18PM -0500, Mario Limonciello wrote:
>> commit 4fb0abfee424 ("x86/amd_nb: Add AMD Family 19h Models (10h-1Fh)
>> and (A0h-AFh) PCI IDs") had claimed to add the IDs for models A0h-AFh,
>> but it appears to only have added the models 10h-1Fh.
>>
>> Add the actual IDs for A0-AF which are needed for SMN communication to
>> work properly in amd_nb.
>>
>> Fixes: 4fb0abfee424 ("x86/amd_nb: Add AMD Family 19h Models (10h-1Fh) and (A0h-AFh) PCI IDs")
>> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
>> ---
>> arch/x86/kernel/amd_nb.c | 5 +++++
>> include/linux/pci_ids.h | 1 +
>> 2 files changed, 6 insertions(+)
>>
>> diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
>> index 190e0f763375..cc8c7cfa9068 100644
>> --- a/arch/x86/kernel/amd_nb.c
>> +++ b/arch/x86/kernel/amd_nb.c
>> @@ -25,11 +25,13 @@
>> #define PCI_DEVICE_ID_AMD_17H_M30H_DF_F4 0x1494
>> #define PCI_DEVICE_ID_AMD_17H_M60H_DF_F4 0x144c
>> #define PCI_DEVICE_ID_AMD_17H_M70H_DF_F4 0x1444
>> +#define PCI_DEVICE_ID_AMD_19H_MA0H_ROOT 0x14b5
>> #define PCI_DEVICE_ID_AMD_19H_DF_F4 0x1654
>> #define PCI_DEVICE_ID_AMD_19H_M10H_DF_F4 0x14b1
>> #define PCI_DEVICE_ID_AMD_19H_M40H_ROOT 0x14b5
>> #define PCI_DEVICE_ID_AMD_19H_M40H_DF_F4 0x167d
>> #define PCI_DEVICE_ID_AMD_19H_M50H_DF_F4 0x166e
>> +#define PCI_DEVICE_ID_AMD_19H_MA0H_DF_F4 0x1728
>>
>> /* Protect the PCI config register pairs used for SMN. */
>> static DEFINE_MUTEX(smn_mutex);
>> @@ -43,6 +45,7 @@ static const struct pci_device_id amd_root_ids[] = {
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M60H_ROOT) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_ROOT) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_ROOT) },
>> + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_MA0H_ROOT) },
>> {}
>> };
>>
>> @@ -67,6 +70,7 @@ static const struct pci_device_id amd_nb_misc_ids[] = {
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_DF_F3) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F3) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F3) },
>> + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_MA0H_DF_F3) },
>> {}
>> };
>>
>> @@ -85,6 +89,7 @@ static const struct pci_device_id amd_nb_link_ids[] = {
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M10H_DF_F4) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M40H_DF_F4) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F4) },
>> + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_MA0H_DF_F4) },
>> { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },
>> {}
>> };
>> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>> index 0178823ce8c2..05b4c67a8a2a 100644
>> --- a/include/linux/pci_ids.h
>> +++ b/include/linux/pci_ids.h
>> @@ -560,6 +560,7 @@
>> #define PCI_DEVICE_ID_AMD_19H_M10H_DF_F3 0x14b0
>> #define PCI_DEVICE_ID_AMD_19H_M40H_DF_F3 0x167c
>> #define PCI_DEVICE_ID_AMD_19H_M50H_DF_F3 0x166d
>> +#define PCI_DEVICE_ID_AMD_19H_MA0H_DF_F3 0x1727
>
> This file is nominally sorted by numeric device ID inside the vendor
> section, but that has really deteriorated over time.

It seemed like it was more oriented to be sorted by the macro definition
than the ID.

>
> I can't quite figure out the rationale for deciding whether to put
> things in amd_nb.c vs pci_ids.h. The IDs in amd_nb.c look basically
> the same as this one.
>
> Normally we put things in pci_ids.h if they are used more than one
> place. PCI_DEVICE_ID_AMD_19H_MA0H_DF_F3 looks like it's only used in
> one place.

I suppose you weren't on CC for patch 2/2 in this series (thanks
scripts/get_maintainer.pl), so it's not obvious to you that this ID is
used in a second place in patch 2. I didn't want to ping pong in/out
from amd_nb.c in the series.

Here is a lore link to it:
https://lore.kernel.org/linux-kernel/20220601172121.18612-2-mario.limonciello@amd.com/

>
>> #define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703
>> #define PCI_DEVICE_ID_AMD_LANCE 0x2000
>> #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001
>> --
>> 2.34.1
>>

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