linux-kernel - Re: [PATCH 1/2] x86/amd_nb: Add support for Raven Ridge CPUs

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Date:   Sun, 29 Apr 2018 06:16:19 +0200
From:   Gabriel C <nix.or.die@...il.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Clemens Ladisch <clemens@...isch.de>, X86 ML <x86@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-hwmon@...r.kernel.org,
        Borislav Petkov <bp@...e.de>,
        Yazen Ghannam <Yazen.Ghannam@....com>,
        Brian Woods <brian.woods@....com>
Subject: Re: [PATCH 1/2] x86/amd_nb: Add support for Raven Ridge CPUs

2018-04-29 3:54 GMT+02:00 Guenter Roeck <linux@...ck-us.net>:
> Add Raven Ridge root bridge and data fabric PCI IDs.
> This is required for amd_pci_dev_to_node_id() and amd_smn_read().
>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
> This patch is a prerequisite for the second patch in the series.
> I'll be happy to apply both patches through hwmon if that is acceptable
> (and Cc: stable for 4.16+). If not, I'll be happy to wait for this patch
> to be available upstream.
>
> Since that there is no public documentation available for Raven Ridge,
> PCI IDs are derived from output of lspci.
>
>  arch/x86/kernel/amd_nb.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
> index c88e0b127810..bd33613ecb7c 100644
> --- a/arch/x86/kernel/amd_nb.c
> +++ b/arch/x86/kernel/amd_nb.c
> @@ -14,8 +14,11 @@
>  #include <asm/amd_nb.h>
>
>  #define PCI_DEVICE_ID_AMD_17H_ROOT     0x1450
> +#define PCI_DEVICE_ID_AMD_17H_RR_ROOT  0x15d0
>  #define PCI_DEVICE_ID_AMD_17H_DF_F3    0x1463
>  #define PCI_DEVICE_ID_AMD_17H_DF_F4    0x1464
> +#define PCI_DEVICE_ID_AMD_17H_RR_DF_F3 0x15eb
> +#define PCI_DEVICE_ID_AMD_17H_RR_DF_F4 0x15ec
>
>  /* Protect the PCI config register pairs used for SMN and DF indirect access. */
>  static DEFINE_MUTEX(smn_mutex);
> @@ -24,6 +27,7 @@ static u32 *flush_words;
>
>  static const struct pci_device_id amd_root_ids[] = {
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_ROOT) },
> +       { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_RR_ROOT) },
>         {}
>  };
>
> @@ -39,6 +43,7 @@ const struct pci_device_id amd_nb_misc_ids[] = {
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
> +       { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_RR_DF_F3) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
>         {}
>  };
> @@ -51,6 +56,7 @@ static const struct pci_device_id amd_nb_link_ids[] = {
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F4) },
> +       { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_RR_DF_F4) },
>         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },
>         {}
>  };
> --
> 2.7.4
>

Works fine for me on top stable and on top v4.17-rc2-398-gcdface520934

Tested-by: Gabriel Craciunescu <nix.or.die@...il.com>


Regards