drm/amdgpu: add vcn jpeg ring test

Add a ring test for vcn jpeg.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index d485a74de44d..0b97a72cc202 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -578,3 +578,43 @@ error:
         dma_fence_put(fence);
         return r;
 }
+
+int amdgpu_vcn_jpeg_ring_test_ring(struct amdgpu_ring *ring)
+{
+        struct amdgpu_device *adev = ring->adev;
+        uint32_t tmp = 0;
+        unsigned i;
+        int r;
+
+        WREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_CONTEXT_ID), 0xCAFEDEAD);
+        r = amdgpu_ring_alloc(ring, 3);
+
+        if (r) {
+                DRM_ERROR("amdgpu: cp failed to lock ring %d (%d).\n",
+                                  ring->idx, r);
+                return r;
+        }
+
+        amdgpu_ring_write(ring,
+                PACKETJ(SOC15_REG_OFFSET(UVD, 0, mmUVD_CONTEXT_ID), 0, 0, 0));
+        amdgpu_ring_write(ring, 0xDEADBEEF);
+        amdgpu_ring_commit(ring);
+
+        for (i = 0; i < adev->usec_timeout; i++) {
+                tmp = RREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_CONTEXT_ID));
+                if (tmp == 0xDEADBEEF)
+                        break;
+                DRM_UDELAY(1);
+        }
+
+        if (i < adev->usec_timeout) {
+                DRM_DEBUG("ring test on %d succeeded in %d usecs\n",
+                                  ring->idx, i);
+        } else {
+                DRM_ERROR("amdgpu: ring %d test failed (0x%08X)\n",
+                                  ring->idx, tmp);
+                r = -EINVAL;
+        }
+
+        return r;
+}