netdev - Re: [PATCH] PCI: Add ACS quirk for Wangxun NICs

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Message-ID: <Y+KMhg145coygAdY@corigine.com>
Date:   Tue, 7 Feb 2023 18:38:14 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     Mengyuan Lou <mengyuanlou@...-swift.com>
Cc:     netdev@...r.kernel.org, linux-pci@...r.kernel.org,
        helgaas@...nel.org
Subject: Re: [PATCH] PCI: Add ACS quirk for Wangxun NICs

On Tue, Feb 07, 2023 at 06:24:19PM +0800, Mengyuan Lou wrote:
> Wangxun has verified there is no peer-to-peer between functions for the
> below selection of SFxxx, RP1000 and RP2000 NICS.
> They may be multi-function device, but the hardware does not advertise
> ACS capability.
> 
> Add an ACS quirk for these devices so the functions can be in
> independent IOMMU groups.
> 
> Signed-off-by: Mengyuan Lou <mengyuanlou@...-swift.com>

...

> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index b362d90eb9b0..bc8f484cdcf3 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -3012,6 +3012,8 @@
>  #define PCI_DEVICE_ID_INTEL_VMD_9A0B	0x9a0b
>  #define PCI_DEVICE_ID_INTEL_S21152BB	0xb152
>  
> +#define PCI_VENDOR_ID_WANGXUN		0x8088
> +

nit: this is already present in drivers/net/ethernet/wangxun/libwx/wx_type.h
     perhaps it can be removed from there as a follow-up ?

>  #define PCI_VENDOR_ID_SCALEMP		0x8686
>  #define PCI_DEVICE_ID_SCALEMP_VSMP_CTL	0x1010
>  
> -- 
> 2.39.1
>