when shadowing enabled, tesselation app will trigger
vm fault because below three tesselation registers:
VGT_TF_RING_SIZE__CI__VI,
VGT_HS_OFFCHIP_PARAM__CI__VI,
VGT_TF_MEMORY_BASE__CI__VI,
need to be programed after vgt-flush.
Tesselation picture vm fault disappeared after vgt-flush
introduced.
v2:implement vgt-flush for CI & SI.
v3:move vgt flush inside of cntx_cntrl
Change-Id: I77d87d93ce6580e559e734fb41d97ee8c59d245b
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 9 +++++++++
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 13 +++++++++++++
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 13 +++++++++++++
3 files changed, 35 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 9423501..0aacd36 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -1463,6 +1463,13 @@ static void gfx_v6_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
amdgpu_ring_write(ring, 0x1);
}
+static void gfx_v6_0_ring_emit_vgt_flush(struct amdgpu_ring *ring)
+{
+ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE, 0));
+ amdgpu_ring_write(ring, EVENT_TYPE(VGT_FLUSH) |
+ EVENT_INDEX(0));
+}
+
/**
* gfx_v6_0_ring_emit_hdp_invalidate - emit an hdp invalidate on the cp
*
@@ -2802,6 +2809,8 @@ static uint64_t gfx_v6_0_get_gpu_clock_counter(struct amdgpu_device *adev)
static void gfx_v6_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags)
{
+ if (flags & AMDGPU_HAVE_CTX_SWITCH) {
+ gfx_v6_0_ring_emit_vgt_flush(ring);
amdgpu_ring_write(ring, PACKET3(PACKET3_CONTEXT_CONTROL, 1));
amdgpu_ring_write(ring, 0x80000000);
amdgpu_ring_write(ring, 0);
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index bd9a6c8..493d889 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -2105,6 +2105,18 @@ static void gfx_v7_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
amdgpu_ring_write(ring, 0x20); /* poll interval */
}
+static void gfx_v7_0_ring_emit_vgt_flush(struct amdgpu_ring *ring)
+{
+ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE, 0));
+ amdgpu_ring_write(ring, EVENT_TYPE(VS_PARTIAL_FLUSH) |
+ EVENT_INDEX(4));
+
+ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE, 0));
+ amdgpu_ring_write(ring, EVENT_TYPE(VGT_FLUSH) |
+ EVENT_INDEX(0));
+}
+
+
/**
* gfx_v7_0_ring_emit_hdp_invalidate - emit an hdp invalidate on the cp
*
@@ -2260,6 +2272,7 @@ static void gfx_v7_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags)
dw2 |= 0x80000000; /* set load_enable otherwise this package is just NOPs */
if (flags & AMDGPU_HAVE_CTX_SWITCH) {
+ gfx_v7_0_ring_emit_vgt_flush(ring);
/* set load_global_config & load_global_uconfig */
dw2 |= 0x8001;
/* set load_cs_sh_regs */
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 9017803..d52f458 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6187,6 +6187,18 @@ static void gfx_v8_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
amdgpu_ring_write(ring, 0x20); /* poll interval */
}
+static void gfx_v8_0_ring_emit_vgt_flush(struct amdgpu_ring *ring)
+{
+ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE, 0));
+ amdgpu_ring_write(ring, EVENT_TYPE(VS_PARTIAL_FLUSH) |
+ EVENT_INDEX(4));
+
+ amdgpu_ring_write(ring, PACKET3(PACKET3_EVENT_WRITE, 0));
+ amdgpu_ring_write(ring, EVENT_TYPE(VGT_FLUSH) |
+ EVENT_INDEX(0));
+}
+
+
static void gfx_v8_0_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
{
amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
@@ -6372,6 +6384,7 @@ static void gfx_v8_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags)
dw2 |= 0x80000000; /* set load_enable otherwise this package is just NOPs */
if (flags & AMDGPU_HAVE_CTX_SWITCH) {
+ gfx_v8_0_ring_emit_vgt_flush(ring);
/* set load_global_config & load_global_uconfig */
dw2 |= 0x8001;
/* set load_cs_sh_regs */
--
1.9.1
