diff options
| author | Jammy Zhou <Jammy.Zhou@amd.com> | 2015-09-01 13:13:54 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-09-02 12:35:39 -0400 |
| commit | ac01db3dd5a0c7916e804a52752b780c5c18b98d (patch) | |
| tree | 2719c07381bbe03c5a009c4d789933f58f7bad29 /drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | |
| parent | edff0e2826412be38f0c7977cbf89262141aad87 (diff) | |
drm/amdgpu: implement burst NOP for SDMA
Customize the insert_nop func for SDMA rings, and use burst NOP for
ring/IB submissions in other places as well
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c index a7550a8f5d84..9bfe92df15f7 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c @@ -306,6 +306,19 @@ static void sdma_v3_0_ring_set_wptr(struct amdgpu_ring *ring) } } +static void sdma_v3_0_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count) +{ + struct amdgpu_sdma *sdma = amdgpu_get_sdma_instance(ring); + int i; + + for (i = 0; i < count; i++) + if (sdma && sdma->burst_nop && (i == 0)) + amdgpu_ring_write(ring, ring->nop | + SDMA_PKT_NOP_HEADER_COUNT(count - 1)); + else + amdgpu_ring_write(ring, ring->nop); +} + /** * sdma_v3_0_ring_emit_ib - Schedule an IB on the DMA engine * @@ -332,8 +345,7 @@ static void sdma_v3_0_ring_emit_ib(struct amdgpu_ring *ring, amdgpu_ring_write(ring, next_rptr); /* IB packet must end on a 8 DW boundary */ - while ((ring->wptr & 7) != 2) - amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_NOP)); + sdma_v3_0_ring_insert_nop(ring, (10 - (ring->wptr & 7)) % 8); amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_INDIRECT) | SDMA_PKT_INDIRECT_HEADER_VMID(vmid)); @@ -1001,8 +1013,19 @@ static void sdma_v3_0_vm_set_pte_pde(struct amdgpu_ib *ib, */ static void sdma_v3_0_vm_pad_ib(struct amdgpu_ib *ib) { - while (ib->length_dw & 0x7) - ib->ptr[ib->length_dw++] = SDMA_PKT_HEADER_OP(SDMA_OP_NOP); + struct amdgpu_sdma *sdma = amdgpu_get_sdma_instance(ib->ring); + u32 pad_count; + int i; + + pad_count = (8 - (ib->length_dw & 0x7)) % 8; + for (i = 0; i < pad_count; i++) + if (sdma && sdma->burst_nop && (i == 0)) + ib->ptr[ib->length_dw++] = + SDMA_PKT_HEADER_OP(SDMA_OP_NOP) | + SDMA_PKT_NOP_HEADER_COUNT(pad_count - 1); + else + ib->ptr[ib->length_dw++] = + SDMA_PKT_HEADER_OP(SDMA_OP_NOP); } /** @@ -1440,7 +1463,7 @@ static const struct amdgpu_ring_funcs sdma_v3_0_ring_funcs = { .test_ring = sdma_v3_0_ring_test_ring, .test_ib = sdma_v3_0_ring_test_ib, .is_lockup = sdma_v3_0_ring_is_lockup, - .insert_nop = amdgpu_ring_insert_nop, + .insert_nop = sdma_v3_0_ring_insert_nop, }; static void sdma_v3_0_set_ring_funcs(struct amdgpu_device *adev) |