From 9ccd52eb248b0d8f0450e1201a8064f5ab1ec07e Mon Sep 17 00:00:00 2001 From: Monk Liu Date: Tue, 21 Mar 2017 11:50:43 +0800 Subject: [PATCH] drm/amdgpu:enable mcbp for gfx9(v2) set bit 21 of IB.control filed to actually enable MCBP for SRIOV v2: add flag for preemption enable bit for soc15 and use this flag instead of hardcode. Signed-off-by: Monk Liu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 3 +++ drivers/gpu/drm/amd/amdgpu/soc15d.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 69fa156..f124f6d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -3073,6 +3073,9 @@ static void gfx_v9_0_ring_emit_ib_gfx(struct amdgpu_ring *ring, control |= ib->length_dw | (vm_id << 24); + if (amdgpu_sriov_vf(ring->adev) && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) + control |= INDIRECT_BUFFER_PRE_ENB(1); + amdgpu_ring_write(ring, header); BUG_ON(ib->gpu_addr & 0x3); /* Dword align */ amdgpu_ring_write(ring, diff --git a/drivers/gpu/drm/amd/amdgpu/soc15d.h b/drivers/gpu/drm/amd/amdgpu/soc15d.h index 7d29329..75403c7 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15d.h +++ b/drivers/gpu/drm/amd/amdgpu/soc15d.h @@ -137,6 +137,7 @@ * 1 - Stream * 2 - Bypass */ +#define INDIRECT_BUFFER_PRE_ENB(x) ((x) << 21) #define PACKET3_COPY_DATA 0x40 #define PACKET3_PFP_SYNC_ME 0x42 #define PACKET3_COND_WRITE 0x45 -- 2.7.4