[PATCH 2/2] drm/amdgpu: Configure doorbell to maximum slots

[Oded Gabbay]

On Wed, Jun 24, 2015 at 10:06 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Fri, Jun 12, 2015 at 4:08 AM, Oded Gabbay <oded.gabbay at gmail.com> wrote:
>> From: Ben Goz <ben.goz at amd.com>
>>
>> Signed-off-by: Ben Goz <ben.goz at amd.com>
>> Acked-by: Oded Gabbay <oded.gabbay at amd.com>
>
> This patch effectively reverts a fix for a hw bug IIRC.
>
> Alex
Hmm, let's see what Ben says about this. To which H/W bug are you referring ?

       Oded
>
>> ---
>>  drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
>> index e4aeb74..7683d7f 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
>> @@ -3128,7 +3128,7 @@ static int gfx_v8_0_cp_compute_resume(struct amdgpu_device *adev)
>>                                 WREG32(mmCP_MEC_DOORBELL_RANGE_LOWER,
>>                                        AMDGPU_DOORBELL_KIQ << 2);
>>                                 WREG32(mmCP_MEC_DOORBELL_RANGE_UPPER,
>> -                                      AMDGPU_DOORBELL_MEC_RING7 << 2);
>> +                                               0x7FFFF << 2);
>>                         }
>>                         tmp = RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
>>                         tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
>> --
>> 2.4.3
>>