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| author | Monk Liu | 2016-11-18 10:16:36 +0100 |
|---|---|---|
| committer | Alex Deucher | 2017-03-30 05:55:01 +0200 |
| commit | 9a5e02b5ccf8399908c67cca9ff86c725db60a0d (patch) | |
| tree | c119b4403118b3a38ef4d0b282f1e4f58541322c /drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | |
| parent | drm/amdgpu: init kiq and kcq for vega10 (diff) | |
| download | kernel-qcow2-linux-9a5e02b5ccf8399908c67cca9ff86c725db60a0d.tar.gz kernel-qcow2-linux-9a5e02b5ccf8399908c67cca9ff86c725db60a0d.tar.xz kernel-qcow2-linux-9a5e02b5ccf8399908c67cca9ff86c725db60a0d.zip | |
drm/amdgpu:impl gfx9 cond_exec (v2)
it is needed for virtualization
v2: squash in wptr value fix
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 307342c9d226..a3d4508c32ea 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -3224,6 +3224,31 @@ static void gfx_v9_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags) amdgpu_ring_write(ring, 0); } +static unsigned gfx_v9_0_ring_emit_init_cond_exec(struct amdgpu_ring *ring) +{ + unsigned ret; + amdgpu_ring_write(ring, PACKET3(PACKET3_COND_EXEC, 3)); + amdgpu_ring_write(ring, lower_32_bits(ring->cond_exe_gpu_addr)); + amdgpu_ring_write(ring, upper_32_bits(ring->cond_exe_gpu_addr)); + amdgpu_ring_write(ring, 0); /* discard following DWs if *cond_exec_gpu_addr==0 */ + ret = ring->wptr & ring->buf_mask; + amdgpu_ring_write(ring, 0x55aa55aa); /* patch dummy value later */ + return ret; +} + +static void gfx_v9_0_ring_emit_patch_cond_exec(struct amdgpu_ring *ring, unsigned offset) +{ + unsigned cur; + BUG_ON(offset > ring->buf_mask); + BUG_ON(ring->ring[offset] != 0x55aa55aa); + + cur = (ring->wptr & ring->buf_mask) - 1; + if (likely(cur > offset)) + ring->ring[offset] = cur - offset; + else + ring->ring[offset] = (ring->ring_size>>2) - offset + cur; +} + static void gfx_v9_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg) { struct amdgpu_device *adev = ring->adev; @@ -3575,6 +3600,8 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = { .pad_ib = amdgpu_ring_generic_pad_ib, .emit_switch_buffer = gfx_v9_ring_emit_sb, .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, }; static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = { |