From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Fri, 12 Jan 2018 16:31:15 +0100
Subject: drm/amdgpu: wire up emit_wreg for gfx v7
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Git-commit: 3f3e9de803c54822cb0faacaad021626977ab92a
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Needed for vm_flush unification.

v2: handle compute rings as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -3290,6 +3290,19 @@ static void gfx_v7_0_ring_emit_vm_flush(
 	}
 }
 
+static void gfx_v7_0_ring_emit_wreg(struct amdgpu_ring *ring,
+				    uint32_t reg, uint32_t val)
+{
+	int usepfp = (ring->funcs->type == AMDGPU_RING_TYPE_GFX);
+
+	amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
+	amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(usepfp) |
+				 WRITE_DATA_DST_SEL(0)));
+	amdgpu_ring_write(ring, reg);
+	amdgpu_ring_write(ring, 0);
+	amdgpu_ring_write(ring, val);
+}
+
 /*
  * RLC
  * The RLC is a multi-purpose microengine that handles a
@@ -5108,6 +5121,7 @@ static const struct amdgpu_ring_funcs gf
 	.insert_nop = amdgpu_ring_insert_nop,
 	.pad_ib = amdgpu_ring_generic_pad_ib,
 	.emit_cntxcntl = gfx_v7_ring_emit_cntxcntl,
+	.emit_wreg = gfx_v7_0_ring_emit_wreg,
 };
 
 static const struct amdgpu_ring_funcs gfx_v7_0_ring_funcs_compute = {
@@ -5137,6 +5151,7 @@ static const struct amdgpu_ring_funcs gf
 	.test_ib = gfx_v7_0_ring_test_ib,
 	.insert_nop = amdgpu_ring_insert_nop,
 	.pad_ib = amdgpu_ring_generic_pad_ib,
+	.emit_wreg = gfx_v7_0_ring_emit_wreg,
 };
 
 static void gfx_v7_0_set_ring_funcs(struct amdgpu_device *adev)