From e7501c34aa002e53f0128f685134eb550a74560d Mon Sep 17 00:00:00 2001
From: Leo Liu <leo.liu@amd.com>
Date: Tue, 7 Feb 2017 11:52:00 -0500
Subject: [PATCH] drm/amdgpu: implement vcn start RB command
Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
index 643e4cecc3f6..2fd60de1377e 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
@@ -488,6 +488,23 @@ static void vcn_v1_0_dec_ring_set_wptr(struct amdgpu_ring *ring)
WREG32(SOC15_REG_OFFSET(UVD, 0, mmUVD_RBC_RB_WPTR), lower_32_bits(ring->wptr));
}
+/**
+ * vcn_v1_0_dec_ring_insert_start - insert a start command
+ *
+ * @ring: amdgpu_ring pointer
+ *
+ * Write a start command to the ring.
+ */
+static void vcn_v1_0_dec_ring_insert_start(struct amdgpu_ring *ring)
+{
+ amdgpu_ring_write(ring,
+ PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_DATA0), 0));
+ amdgpu_ring_write(ring, 0);
+ amdgpu_ring_write(ring,
+ PACKET0(SOC15_REG_OFFSET(UVD, 0, mmUVD_GPCOM_VCPU_CMD), 0));
+ amdgpu_ring_write(ring, VCN_CMD_PACKET_START << 1);
+}
+
/**
* vcn_v1_0_dec_ring_emit_fence - emit an fence & trap command
*
@@ -683,7 +700,8 @@ static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
.emit_frame_size =
2 + /* vcn_v1_0_dec_ring_emit_hdp_invalidate */
34 * AMDGPU_MAX_VMHUBS + /* vcn_v1_0_dec_ring_emit_vm_flush */
- 14 + 14, /* vcn_v1_0_dec_ring_emit_fence x2 vm fence */
+ 14 + 14 + /* vcn_v1_0_dec_ring_emit_fence x2 vm fence */
+ 4,
.emit_ib_size = 8, /* vcn_v1_0_dec_ring_emit_ib */
.emit_ib = vcn_v1_0_dec_ring_emit_ib,
.emit_fence = vcn_v1_0_dec_ring_emit_fence,
@@ -692,6 +710,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_dec_ring_vm_funcs = {
.test_ring = amdgpu_vcn_dec_ring_test_ring,
.test_ib = amdgpu_vcn_dec_ring_test_ib,
.insert_nop = amdgpu_ring_insert_nop,
+ .insert_start = vcn_v1_0_dec_ring_insert_start,
.pad_ib = amdgpu_ring_generic_pad_ib,
.begin_use = amdgpu_vcn_ring_begin_use,
.end_use = amdgpu_vcn_ring_end_use,
--
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