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From 25230fa2b61a6c19e48ab80ab525783c1e4e8914 Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@amd.com>
Date: Thu, 3 Mar 2016 12:06:34 +0800
Subject: [PATCH 0349/1110] drm/amdgpu: add hdp invalidation for sdma v2_4
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/sdma_v2_4.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
index 60c2721..602a467 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
@@ -300,6 +300,13 @@ static void sdma_v2_4_ring_emit_hdp_flush(struct amdgpu_ring *ring)
SDMA_PKT_POLL_REGMEM_DW5_INTERVAL(10)); /* retry count, poll interval */
}
+static void sdma_v2_4_ring_emit_hdp_invalidate(struct amdgpu_ring *ring)
+{
+ amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
+ SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
+ amdgpu_ring_write(ring, mmHDP_DEBUG0);
+ amdgpu_ring_write(ring, 1);
+}
/**
* sdma_v2_4_ring_emit_fence - emit a fence on the DMA ring
*
@@ -1291,6 +1298,7 @@ static const struct amdgpu_ring_funcs sdma_v2_4_ring_funcs = {
.emit_fence = sdma_v2_4_ring_emit_fence,
.emit_vm_flush = sdma_v2_4_ring_emit_vm_flush,
.emit_hdp_flush = sdma_v2_4_ring_emit_hdp_flush,
+ .emit_hdp_invalidate = sdma_v2_4_ring_emit_hdp_invalidate,
.test_ring = sdma_v2_4_ring_test_ring,
.test_ib = sdma_v2_4_ring_test_ib,
.insert_nop = sdma_v2_4_ring_insert_nop,
--
2.7.4
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