drm/amdgpu: wire up emit_wreg for SDMA v4

Needed for vm_flush unification.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index f0b10cb..282b402 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1172,6 +1172,15 @@ static void sdma_v4_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
                          SDMA_PKT_POLL_REGMEM_DW5_INTERVAL(10));
 }
 
+static void sdma_v4_0_ring_emit_wreg(struct amdgpu_ring *ring,
+                                    uint32_t reg, uint32_t val)
+{
+       amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
+                         SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
+       amdgpu_ring_write(ring, reg);
+       amdgpu_ring_write(ring, val);
+}
+
 static int sdma_v4_0_early_init(void *handle)
 {
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -1608,6 +1617,7 @@ static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs = {
        .test_ib = sdma_v4_0_ring_test_ib,
        .insert_nop = sdma_v4_0_ring_insert_nop,
        .pad_ib = sdma_v4_0_ring_pad_ib,
+       .emit_wreg = sdma_v4_0_ring_emit_wreg,
 };
 
 static void sdma_v4_0_set_ring_funcs(struct amdgpu_device *adev)