drm/amdgpu/uvd7: add uvd doorbell initialization for sriov

Add UVD doorbell for SRIOV.

Signed-off-by: Frank Min <Frank.Min@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
index 46c7bc4..552bfcd 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
@@ -103,6 +103,9 @@ static uint64_t uvd_v7_0_enc_ring_get_wptr(struct amdgpu_ring *ring)
 {
        struct amdgpu_device *adev = ring->adev;
 
+       if (ring->use_doorbell)
+               return adev->wb.wb[ring->wptr_offs];
+
        if (ring == &adev->uvd.ring_enc[0])
                return RREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_RB_WPTR));
        else
@@ -134,6 +137,13 @@ static void uvd_v7_0_enc_ring_set_wptr(struct amdgpu_ring *ring)
 {
        struct amdgpu_device *adev = ring->adev;
 
+       if (ring->use_doorbell) {
+               /* XXX check if swapping is necessary on BE */
+               adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr);
+               WDOORBELL32(ring->doorbell_index, lower_32_bits(ring->wptr));
+               return;
+       }
+
        if (ring == &adev->uvd.ring_enc[0])
                WREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_RB_WPTR),
                        lower_32_bits(ring->wptr));
@@ -421,6 +431,10 @@ static int uvd_v7_0_sw_init(void *handle)
        for (i = 0; i < adev->uvd.num_enc_rings; ++i) {
                ring = &adev->uvd.ring_enc[i];
                sprintf(ring->name, "uvd_enc%d", i);
+               if (amdgpu_sriov_vf(adev)) {
+                       ring->use_doorbell = true;
+                       ring->doorbell_index = AMDGPU_DOORBELL64_UVD_RING0_1 * 2;
+               }
                r = amdgpu_ring_init(adev, ring, 512, &adev->uvd.irq, 0);
                if (r)
                        return r;