FW: [PATCH 1/2] drm/amdgpu:use FRAME_CNTL for new GFX ucode

Liu, Monk Monk.Liu at amd.com
Thu May 4 10:48:45 UTC 2017



-----Original Message-----
From: Monk Liu [mailto:Monk.Liu at amd.com] 
Sent: Thursday, May 04, 2017 6:47 PM
To: Liu, Monk <Monk.Liu at amd.com>
Cc: Liu, Monk <Monk.Liu at amd.com>
Subject: [PATCH 1/2] drm/amdgpu:use FRAME_CNTL for new GFX ucode

VI/AI affected:

CP/HW team requires KMD insert FRAME_CONTROL(end) after the last IB and before the fence of this DMAframe.

this is to make sure the cache are flushed, and it's a must change no matter MCBP/SR-IOV or bare-metal case because new CP hw won't do the cache flush for each IB anymore, it just leaves it to KMD now.

with this patch, certain MCBP hang issue when rendering vulkan/chained-ib are resolved.

Change-Id: I34ee7528aa32e704b2850bc6d50774b24c29b840
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
Reviewed-by: Christian K├Ânig <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h      | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c   | 3 +++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 1 +
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c    | 7 +++++++
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c    | 7 +++++++
 5 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 0ee4d87..f59a1e5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1828,6 +1828,7 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)  #define amdgpu_ring_emit_cntxcntl(r, d) (r)->funcs->emit_cntxcntl((r), (d))  #define amdgpu_ring_emit_rreg(r, d) (r)->funcs->emit_rreg((r), (d))  #define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v))
+#define amdgpu_ring_emit_tmz(r, b) (r)->funcs->emit_tmz((r), (b))
 #define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib)))  #define amdgpu_ring_init_cond_exec(r) (r)->funcs->init_cond_exec((r))  #define amdgpu_ring_patch_cond_exec(r,o) (r)->funcs->patch_cond_exec((r),(o))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 4480e01..11a22fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -206,6 +206,9 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 		need_ctx_switch = false;
 	}
 
+	if (ring->funcs->emit_tmz)
+		amdgpu_ring_emit_tmz(ring, false);
+
 	if (ring->funcs->emit_hdp_invalidate
 #ifdef CONFIG_X86_64
 	    && !(adev->flags & AMD_IS_APU)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 5786cc3..981ef08 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -142,6 +142,7 @@ struct amdgpu_ring_funcs {
 	void (*emit_cntxcntl) (struct amdgpu_ring *ring, uint32_t flags);
 	void (*emit_rreg)(struct amdgpu_ring *ring, uint32_t reg);
 	void (*emit_wreg)(struct amdgpu_ring *ring, uint32_t reg, uint32_t val);
+	void (*emit_tmz)(struct amdgpu_ring *ring, bool start);
 };
 
 struct amdgpu_ring {
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 4144fc3..90998f6 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6665,6 +6665,12 @@ static void gfx_v8_0_ring_emit_patch_cond_exec(struct amdgpu_ring *ring, unsigne
 		ring->ring[offset] = (ring->ring_size >> 2) - offset + cur;  }
 
+static void gfx_v8_0_ring_emit_tmz(struct amdgpu_ring *ring, bool 
+start) {
+	amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
+	amdgpu_ring_write(ring, FRAME_CMD(start ? 0 : 1)); /* frame_end */ }
+
 
 static void gfx_v8_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg)  { @@ -6946,6 +6952,7 @@ static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_gfx = {
 	.emit_cntxcntl = gfx_v8_ring_emit_cntxcntl,
 	.init_cond_exec = gfx_v8_0_ring_emit_init_cond_exec,
 	.patch_cond_exec = gfx_v8_0_ring_emit_patch_cond_exec,
+	.emit_tmz = gfx_v8_0_ring_emit_tmz,
 };
 
 static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_compute = { diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 3bf7992..a9ca891 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3245,6 +3245,12 @@ static void gfx_v9_0_ring_emit_patch_cond_exec(struct amdgpu_ring *ring, unsigne
 		ring->ring[offset] = (ring->ring_size>>2) - offset + cur;  }
 
+static void gfx_v9_0_ring_emit_tmz(struct amdgpu_ring *ring, bool 
+start) {
+	amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
+	amdgpu_ring_write(ring, FRAME_CMD(start ? 0 : 1)); /* frame_end */ }
+
 static void gfx_v9_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg)  {
 	struct amdgpu_device *adev = ring->adev; @@ -3579,6 +3585,7 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = {
 	.emit_cntxcntl = gfx_v9_ring_emit_cntxcntl,
 	.init_cond_exec = gfx_v9_0_ring_emit_init_cond_exec,
 	.patch_cond_exec = gfx_v9_0_ring_emit_patch_cond_exec,
+	.emit_tmz = gfx_v9_0_ring_emit_tmz,
 };
 
 static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = {
--
2.7.4



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