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-rw-r--r--common/recipes-kernel/linux/files/0346-drm-amdgpu-add-hdp-invalidation-for-gfx7.patch65
1 files changed, 65 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0346-drm-amdgpu-add-hdp-invalidation-for-gfx7.patch b/common/recipes-kernel/linux/files/0346-drm-amdgpu-add-hdp-invalidation-for-gfx7.patch
new file mode 100644
index 00000000..8db64cfe
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0346-drm-amdgpu-add-hdp-invalidation-for-gfx7.patch
@@ -0,0 +1,65 @@
+From 679ad153d12255e8029b3f4bc3bfb2ecd6279dd7 Mon Sep 17 00:00:00 2001
+From: Chunming Zhou <David1.Zhou@amd.com>
+Date: Thu, 3 Mar 2016 11:46:40 +0800
+Subject: [PATCH 0346/1110] drm/amdgpu: add hdp invalidation for gfx7
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Chunming Zhou <David1.Zhou@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>
+---
+ drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 21 +++++++++++++++++++++
+ 1 file changed, 21 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+index 361ce1b..e1140a4 100644
+--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
++++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+@@ -1925,6 +1925,25 @@ static void gfx_v7_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
+ }
+
+ /**
++ * gfx_v7_0_ring_emit_hdp_invalidate - emit an hdp invalidate on the cp
++ *
++ * @adev: amdgpu_device pointer
++ * @ridx: amdgpu ring index
++ *
++ * Emits an hdp invalidate on the cp.
++ */
++static void gfx_v7_0_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
++{
++ amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
++ amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
++ WRITE_DATA_DST_SEL(0) |
++ WR_CONFIRM));
++ amdgpu_ring_write(ring, mmHDP_DEBUG0);
++ amdgpu_ring_write(ring, 0);
++ amdgpu_ring_write(ring, 1);
++}
++
++/**
+ * gfx_v7_0_ring_emit_fence_gfx - emit a fence on the gfx ring
+ *
+ * @adev: amdgpu_device pointer
+@@ -5145,6 +5164,7 @@ static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_gfx = {
+ .emit_vm_flush = gfx_v7_0_ring_emit_vm_flush,
+ .emit_gds_switch = gfx_v7_0_ring_emit_gds_switch,
+ .emit_hdp_flush = gfx_v7_0_ring_emit_hdp_flush,
++ .emit_hdp_invalidate = gfx_v7_0_ring_emit_hdp_invalidate,
+ .test_ring = gfx_v7_0_ring_test_ring,
+ .test_ib = gfx_v7_0_ring_test_ib,
+ .insert_nop = amdgpu_ring_insert_nop,
+@@ -5161,6 +5181,7 @@ static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_compute = {
+ .emit_vm_flush = gfx_v7_0_ring_emit_vm_flush,
+ .emit_gds_switch = gfx_v7_0_ring_emit_gds_switch,
+ .emit_hdp_flush = gfx_v7_0_ring_emit_hdp_flush,
++ .emit_hdp_invalidate = gfx_v7_0_ring_emit_hdp_invalidate,
+ .test_ring = gfx_v7_0_ring_test_ring,
+ .test_ib = gfx_v7_0_ring_test_ib,
+ .insert_nop = amdgpu_ring_insert_nop,
+--
+2.7.4
+