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

[Ben Skeggs]

On 5 February 2018 at 11:37, Ben Skeggs <skeggsb at gmail.com> wrote:
> 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.
Err.. /sys/kernel/debug/dri/0/vbios.rom rather ;)

>
> 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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