[Nouveau] [PATCH 3/3] drm/nouveau/pci: SOR crossbar quirk for 10b0:1b81

[Ben Skeggs]

On 5 February 2018 at 11:22, Danilo Krummrich
<danilokrummrich at dk-develop.de> wrote:
> On Gainward GTX 1070 routing any other SOR than SOR-1 to macro link
> 'G' (outp index 7) causes failures:
>
> [    6.712111] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 61c880 [ IBUS ]
> [    6.724888] nouveau 0000:01:00.0: disp: intr24 80000000
> [    8.716668] nouveau 0000:01:00.0: DRM: base-0: timeout
> [   10.716679] nouveau 0000:01:00.0: DRM: base-1: timeout
> [   63.511862] nouveau 0000:01:00.0: DRM: EVO timeout
>
> As I'm not able to spot an issue in the driver, I suppose it's
> firmware related.
Are you able to mail me /dev/dri/card0/vbios.rom from that, please?
I'd like to look into this some more and be 100% certain this is
indeed a quirk, and not some subtle driver bug.

Thanks,
Ben.

>
> Therefore to work around this issue skip crossbar routing for this
> particular macro link and instead use identity mapping.
>
> Signed-off-by: Danilo Krummrich <danilokrummrich at dk-develop.de>
> ---
>  drivers/gpu/drm/nouveau/nvkm/engine/device/pci.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/pci.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/pci.c
> index d2f9664afcf4..29de270f2232 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/pci.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/pci.c
> @@ -797,6 +797,13 @@ nvkm_device_pci_10de_139b[] = {
>         {}
>  };
>
> +static const struct nvkm_device_pci_vendor
> +nvkm_device_pci_10de_1b81[] = {
> +       /* Gainward GTX 1070 8192 MB */
> +       { 0x10b0, 0x1b81, "GeForce GTX 1070",{ .outp_links_skip = BIT(7) } },
> +       {}
> +};
> +
>  static const struct nvkm_device_pci_device
>  nvkm_device_pci_10de[] = {
>         { 0x0020, "RIVA TNT" },
> @@ -1556,7 +1563,7 @@ nvkm_device_pci_10de[] = {
>         { 0x1b06, "GeForce GTX 1080 TI" },
>         { 0x1bb7, "Quadro P6000" },
>         { 0x1b80, "GeForce GTX 1080" },
> -       { 0x1b81, "GeForce GTX 1070" },
> +       { 0x1b81, "GeForce GTX 1070", nvkm_device_pci_10de_1b81 },
>         { 0x1b82, "GeForce GTX 1070 TI" },
>         { 0x1b84, "GeForce GTX 1060 3GB" },
>         { 0x1b87, "P104-100" },
> --
> 2.14.1
>
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