From aa2bdb2476206c7de4473850039daa705230c27b Mon Sep 17 00:00:00 2001 From: Jammy Zhou Date: Mon, 11 May 2015 23:49:34 +0800 Subject: [PATCH 0197/1050] drm/amdgpu: add CE preamble flag v3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The CE preamble IB can be dropped for the same context v2: use the flags directly v3: remove 'CE' for potential preamble usage by other rings Signed-off-by: Jammy Zhou Reviewed-by: Christian König --- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 7 +++++++ drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c index 7428c43..cec46eb 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -2518,6 +2518,13 @@ static void gfx_v7_0_ring_emit_ib(struct amdgpu_ring *ring, { u32 header, control = 0; u32 next_rptr = ring->wptr + 5; + + /* drop the CE preamble IB for the same context */ + if ((ring->type == AMDGPU_RING_TYPE_GFX) && + (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) && + !ring->need_ctx_switch) + return; + if (ring->type == AMDGPU_RING_TYPE_COMPUTE) control |= INDIRECT_BUFFER_VALID; diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 48de920..fc8c462 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -3647,6 +3647,13 @@ static void gfx_v8_0_ring_emit_ib(struct amdgpu_ring *ring, { u32 header, control = 0; u32 next_rptr = ring->wptr + 5; + + /* drop the CE preamble IB for the same context */ + if ((ring->type == AMDGPU_RING_TYPE_GFX) && + (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) && + !ring->need_ctx_switch) + return; + if (ring->type == AMDGPU_RING_TYPE_COMPUTE) control |= INDIRECT_BUFFER_VALID; -- 1.9.1