drm/radeon: record what is next valid wptr for each ring v4

[mirror_ubuntu-zesty-kernel.git] / drivers / gpu / drm / radeon / si.c

diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index f61b550f9efdd52676f4083ec81ce91553d7b7f3..53e313b05751e9a71061383db6c57b6689312592 100644 (file)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -1765,6 +1765,14 @@ void si_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
        struct radeon_ring *ring = &rdev->ring[ib->ring];
        u32 header;
 
+       if (ring->rptr_save_reg) {
+               uint32_t next_rptr = ring->wptr + 3 + 4 + 8;
+               radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
+               radeon_ring_write(ring, ((ring->rptr_save_reg - 
+                                         PACKET3_SET_CONFIG_REG_START) >> 2));
+               radeon_ring_write(ring, next_rptr);
+       }
+
        if (ib->is_const_ib)
                header = PACKET3(PACKET3_INDIRECT_BUFFER_CONST, 2);
        else
@@ -1917,10 +1925,20 @@ static int si_cp_start(struct radeon_device *rdev)
 
 static void si_cp_fini(struct radeon_device *rdev)
 {
+       struct radeon_ring *ring;
        si_cp_enable(rdev, false);
-       radeon_ring_fini(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]);
-       radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX]);
-       radeon_ring_fini(rdev, &rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX]);
+
+       ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
+       radeon_ring_fini(rdev, ring);
+       radeon_scratch_free(rdev, ring->rptr_save_reg);
+
+       ring = &rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX];
+       radeon_ring_fini(rdev, ring);
+       radeon_scratch_free(rdev, ring->rptr_save_reg);
+
+       ring = &rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX];
+       radeon_ring_fini(rdev, ring);
+       radeon_scratch_free(rdev, ring->rptr_save_reg);
 }
 
 static int si_cp_resume(struct radeon_device *rdev)