From: Leo Liu <leo.liu@amd.com>
Date: Thu, 17 May 2018 13:37:50 -0400
Subject: drm/amdgpu: fix insert nop for UVD7 ring
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Git-commit: cbb7a239117d45d512fae1806cc7722f68c7b82f
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
NO_OP register should be writen to 0
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
@@ -1325,12 +1325,15 @@ static void uvd_v7_0_ring_emit_vm_flush(
static void uvd_v7_0_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
{
- int i;
struct amdgpu_device *adev = ring->adev;
+ int i;
- for (i = 0; i < count; i++)
- amdgpu_ring_write(ring, PACKET0(SOC15_REG_OFFSET(UVD, ring->me, mmUVD_NO_OP), 0));
+ WARN_ON(ring->wptr % 2 || count % 2);
+ for (i = 0; i < count / 2; i++) {
+ amdgpu_ring_write(ring, PACKET0(SOC15_REG_OFFSET(UVD, ring->me, mmUVD_NO_OP), 0));
+ amdgpu_ring_write(ring, 0);
+ }
}
static void uvd_v7_0_enc_ring_insert_end(struct amdgpu_ring *ring)
@@ -1710,7 +1713,6 @@ const struct amd_ip_funcs uvd_v7_0_ip_fu
static const struct amdgpu_ring_funcs uvd_v7_0_ring_vm_funcs = {
.type = AMDGPU_RING_TYPE_UVD,
.align_mask = 0xf,
- .nop = PACKET0(0x81ff, 0),
.support_64bit_ptrs = false,
.vmhub = AMDGPU_MMHUB,
.get_rptr = uvd_v7_0_ring_get_rptr,