On Wed, Mar 22, 2023 at 4:48 AM Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
>
> Am 21.03.23 um 20:39 schrieb Alex Deucher:
> > It varies by generation and we need to know the size
> > to expose this via debugfs.
>
> I suspect we can't just use the BO size for this?
We could, but it may be larger than the actual MQD. Maybe that's not
a big deal?
Alex
>
> If yes the series is Reviewed-by: Christian König <christian.koenig@xxxxxxx>
>
> >
> > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 2 ++
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 1 +
> > 2 files changed, 3 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> > index c50d59855011..5435f41a3b7f 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> > @@ -404,6 +404,7 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
> > return r;
> > }
> >
> > + ring->mqd_size = mqd_size;
> > /* prepare MQD backup */
> > adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
> > if (!adev->gfx.me.mqd_backup[i])
> > @@ -424,6 +425,7 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
> > return r;
> > }
> >
> > + ring->mqd_size = mqd_size;
> > /* prepare MQD backup */
> > adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
> > if (!adev->gfx.mec.mqd_backup[i])
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > index 7942cb62e52c..deb9f7bead02 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> > @@ -257,6 +257,7 @@ struct amdgpu_ring {
> > struct amdgpu_bo *mqd_obj;
> > uint64_t mqd_gpu_addr;
> > void *mqd_ptr;
> > + unsigned mqd_size;
> > uint64_t eop_gpu_addr;
> > u32 doorbell_index;
> > bool use_doorbell;
>
