drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well

We never ported that back to CIK, so we could run into VM faults here.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 7732059ae30f51414ab9173cc1d2fdaa7c07159c..06602df707f86375d8db781db550d6db160e06e0 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -3628,6 +3628,19 @@ static void gfx_v7_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
                                        unsigned vm_id, uint64_t pd_addr)
 {
        int usepfp = (ring->type == AMDGPU_RING_TYPE_GFX);
+       uint32_t seq = ring->fence_drv.sync_seq;
+       uint64_t addr = ring->fence_drv.gpu_addr;
+
+       amdgpu_ring_write(ring, PACKET3(PACKET3_WAIT_REG_MEM, 5));
+       amdgpu_ring_write(ring, (WAIT_REG_MEM_MEM_SPACE(1) | /* memory */
+                                WAIT_REG_MEM_FUNCTION(3) | /* equal */
+                                WAIT_REG_MEM_ENGINE(usepfp)));   /* pfp or me */
+       amdgpu_ring_write(ring, addr & 0xfffffffc);
+       amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
+       amdgpu_ring_write(ring, seq);
+       amdgpu_ring_write(ring, 0xffffffff);
+       amdgpu_ring_write(ring, 4); /* poll interval */
+
        if (usepfp) {
                /* synce CE with ME to prevent CE fetch CEIB before context switch done */
                amdgpu_ring_write(ring, PACKET3(PACKET3_SWITCH_BUFFER, 0));