On Wed, Apr 4, 2018 at 12:44 AM, Emily Deng <Emily.Deng at amd.com> wrote: > From: Alex Deucher <alexander.deucher at amd.com> > > Use amdgpu_ring_emit_reg_write_reg_wait. On engines that support it, > it provides a write and wait in a single packet which avoids a missed > ack if a world switch happens between the request and waiting for the > ack. > > Reviewed-by: Huang Rui <ray.huang at amd.com> > Reviewed-by: Christian König <christian.koenig at amd.com> > Signed-off-by: Alex Deucher <alexander.deucher at amd.com> Series is: Reviewed-by: Alex Deucher <alexander.deucher at amd.com> Please make sure vega10 and raven are working on bare metal. Alex > --- > drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c > index 070946e..aeaed7f 100644 > --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c > @@ -385,11 +385,9 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, > amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_hi32 + (2 * vmid), > upper_32_bits(pd_addr)); > > - amdgpu_ring_emit_wreg(ring, hub->vm_inv_eng0_req + eng, req); > - > - /* wait for the invalidate to complete */ > - amdgpu_ring_emit_reg_wait(ring, hub->vm_inv_eng0_ack + eng, > - 1 << vmid, 1 << vmid); > + amdgpu_ring_emit_reg_write_reg_wait(ring, hub->vm_inv_eng0_req + eng, > + hub->vm_inv_eng0_ack + eng, > + req, 1 << vmid); > > return pd_addr; > } > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
