linux-kernel - Re: [PATCH] x86/amd_nb: add AMD family 19h model 50h PCI ids

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Date:   Fri, 21 May 2021 11:05:29 -0500
From:   Wei Huang <wei.huang2@....com>
To:     Borislav Petkov <bp@...en8.de>, David Bartley <andareed@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-x86_64@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH] x86/amd_nb: add AMD family 19h model 50h PCI ids



On 5/21/21 5:10 AM, Borislav Petkov wrote:
> On Thu, May 20, 2021 at 10:41:30AM -0700, David Bartley wrote:
>> This is required to support Zen3 APUs in k10temp.
>>
>> Signed-off-by: David Bartley <andareed@...il.com>
>> ---
>>   arch/x86/kernel/amd_nb.c | 3 +++
>>   include/linux/pci_ids.h  | 1 +
>>   2 files changed, 4 insertions(+)
>>
>> diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
>> index 09083094eb57..23dda362dc0f 100644
>> --- a/arch/x86/kernel/amd_nb.c
>> +++ b/arch/x86/kernel/amd_nb.c
>> @@ -25,6 +25,7 @@
>>   #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_DF_F4	0x1654
>> +#define PCI_DEVICE_ID_AMD_19H_M50H_DF_F4 0x166e
>>   
>>   /* Protect the PCI config register pairs used for SMN and DF indirect access. */
>>   static DEFINE_MUTEX(smn_mutex);
>> @@ -57,6 +58,7 @@ static const struct pci_device_id amd_nb_misc_ids[] = {
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F3) },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_DF_F3) },
>> +	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M50H_DF_F3) },
>>   	{}
>>   };
>>   
>> @@ -72,6 +74,7 @@ static const struct pci_device_id amd_nb_link_ids[] = {
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M60H_DF_F4) },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M70H_DF_F4) },
>>   	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_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_CNB17H_F4) },
>>   	{}
>>   };
>> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>> index 4c3fa5293d76..5356ccf1c275 100644
>> --- a/include/linux/pci_ids.h
>> +++ b/include/linux/pci_ids.h
>> @@ -555,6 +555,7 @@
>>   #define PCI_DEVICE_ID_AMD_17H_M60H_DF_F3 0x144b
>>   #define PCI_DEVICE_ID_AMD_17H_M70H_DF_F3 0x1443
>>   #define PCI_DEVICE_ID_AMD_19H_DF_F3	0x1653
>> +#define PCI_DEVICE_ID_AMD_19H_M50H_DF_F3 0x166d
> 
> I don't see this define used anywhere else besides amd_nb.c. If there's
> no use for it outside of that file, I'm moving it there...?
> 
> Or does it need to get added to that k10temp_id_table in k10temp.c too?

[+Guenter]

I think it needs to be added to k10temp.c as well. In the meanwhile, 
k10temp_probe() shall be extended with support for family 19h, model 0x5x.

>