linux-kernel - Re: [PATCH] pci: add class codes for processing accelerators

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Message-ID: <CAFCwf12D=PEfxDj9QBg=hNSRoQmOasx68Xc7Wuy2p5LUXiCPnA@mail.gmail.com>
Date:   Thu, 23 Nov 2017 16:14:32 +0200
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci: add class codes for processing accelerators

On Thu, Nov 23, 2017 at 4:11 PM, Greg KH <gregkh@...uxfoundation.org> wrote:
> On Thu, Nov 23, 2017 at 04:04:22PM +0200, Oded Gabbay wrote:
>> Add PCI codes to include/linux/pci_ids.h for Processing Accelerators. There
>> are new ASICs (now in development) for Deep Learning that will utilize this
>> base class.
>>
>> Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
>> ---
>>  include/linux/pci_ids.h | 3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
>> index ab20dc5..4c210cd 100644
>> --- a/include/linux/pci_ids.h
>> +++ b/include/linux/pci_ids.h
>> @@ -139,6 +139,9 @@
>>  #define PCI_CLASS_SP_DPIO            0x1100
>>  #define PCI_CLASS_SP_OTHER           0x1180
>>
>> +#define PCI_BASE_CLASS_PROCESSING_ACCELERATOR        0x12
>> +#define PCI_CLASS_PA_VENDOR_SPECIFIC         0x1200
>
> Did you read the top of this file?
Yes, but I thought that since this value is defined in the PCI spec
then it is ok to add it here.
>
> And if these really do belong here, then it should go in as part of a
> patch series that contains a driver that uses these values.
ok, then I'll need to resend this in a couple of months.

Thanks,
Oded

>
> thanks,
>
> greg k-h