From: Jammy Zhou Date: Tue, 1 Sep 2015 05:13:54 +0000 (+0800) Subject: drm/amdgpu: implement burst NOP for SDMA X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ac01db3dd5a0c7916e804a52752b780c5c18b98d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Reviewed-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c index f0661b269a63..9ea9de457da3 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c @@ -188,6 +188,19 @@ static void cik_sdma_ring_set_wptr(struct amdgpu_ring *ring) WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me], (ring->wptr << 2) & 0x3fffc); } +static void cik_sdma_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_NOP_COUNT(count - 1)); + else + amdgpu_ring_write(ring, ring->nop); +} + /** * cik_sdma_ring_emit_ib - Schedule an IB on the DMA engine * @@ -213,8 +226,8 @@ static void cik_sdma_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) != 4) - amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0)); + cik_sdma_ring_insert_nop(ring, (12 - (ring->wptr & 7)) % 8); + amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_INDIRECT_BUFFER, 0, extra_bits)); amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0); /* base must be 32 byte aligned */ amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xffffffff); @@ -817,8 +830,19 @@ static void cik_sdma_vm_set_pte_pde(struct amdgpu_ib *ib, */ static void cik_sdma_vm_pad_ib(struct amdgpu_ib *ib) { - while (ib->length_dw & 0x7) - ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0); + 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_PACKET(SDMA_OPCODE_NOP, 0, 0) | + SDMA_NOP_COUNT(pad_count - 1); + else + ib->ptr[ib->length_dw++] = + SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0); } /** @@ -1305,7 +1329,7 @@ static const struct amdgpu_ring_funcs cik_sdma_ring_funcs = { .test_ring = cik_sdma_ring_test_ring, .test_ib = cik_sdma_ring_test_ib, .is_lockup = cik_sdma_ring_is_lockup, - .insert_nop = amdgpu_ring_insert_nop, + .insert_nop = cik_sdma_ring_insert_nop, }; static void cik_sdma_set_ring_funcs(struct amdgpu_device *adev) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c index 1b913bce2599..14e87234171a 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c @@ -220,6 +220,19 @@ static void sdma_v2_4_ring_set_wptr(struct amdgpu_ring *ring) WREG32(mmSDMA0_GFX_RB_WPTR + sdma_offsets[me], ring->wptr << 2); } +static void sdma_v2_4_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_v2_4_ring_emit_ib - Schedule an IB on the DMA engine * @@ -247,8 +260,8 @@ static void sdma_v2_4_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_v2_4_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)); /* base must be 32 byte aligned */ @@ -881,8 +894,19 @@ static void sdma_v2_4_vm_set_pte_pde(struct amdgpu_ib *ib, */ static void sdma_v2_4_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); } /** @@ -1316,7 +1340,7 @@ static const struct amdgpu_ring_funcs sdma_v2_4_ring_funcs = { .test_ring = sdma_v2_4_ring_test_ring, .test_ib = sdma_v2_4_ring_test_ib, .is_lockup = sdma_v2_4_ring_is_lockup, - .insert_nop = amdgpu_ring_insert_nop, + .insert_nop = sdma_v2_4_ring_insert_nop, }; static void sdma_v2_4_set_ring_funcs(struct amdgpu_device *adev) 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)