2 * Copyright © 2016 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "anv_private.h"
26 #include "genxml/gen_macros.h"
27 #include "genxml/genX_pack.h"
29 #include "common/gen_l3_config.h"
32 * This file implements some lightweight memcpy/memset operations on the GPU
33 * using a vertex buffer and streamout.
37 * Returns the greatest common divisor of a and b that is a power of two.
40 gcd_pow2_u64(uint64_t a
, uint64_t b
)
42 assert(a
> 0 || b
> 0);
44 unsigned a_log2
= ffsll(a
) - 1;
45 unsigned b_log2
= ffsll(b
) - 1;
47 /* If either a or b is 0, then a_log2 or b_log2 will be UINT_MAX in which
48 * case, the MIN2() will take the other one. If both are 0 then we will
49 * hit the assert above.
51 return 1 << MIN2(a_log2
, b_log2
);
55 genX(cmd_buffer_so_memcpy
)(struct anv_cmd_buffer
*cmd_buffer
,
56 struct anv_address dst
, struct anv_address src
,
62 /* The maximum copy block size is 4 32-bit components at a time. */
63 assert(size
% 4 == 0);
64 unsigned bs
= gcd_pow2_u64(16, size
);
66 enum isl_format format
;
68 case 4: format
= ISL_FORMAT_R32_UINT
; break;
69 case 8: format
= ISL_FORMAT_R32G32_UINT
; break;
70 case 16: format
= ISL_FORMAT_R32G32B32A32_UINT
; break;
72 unreachable("Invalid size");
75 if (!cmd_buffer
->state
.current_l3_config
) {
76 const struct gen_l3_config
*cfg
=
77 gen_get_default_l3_config(&cmd_buffer
->device
->info
);
78 genX(cmd_buffer_config_l3
)(cmd_buffer
, cfg
);
81 genX(cmd_buffer_set_binding_for_gen8_vb_flush
)(cmd_buffer
, 32, src
, size
);
82 genX(cmd_buffer_apply_pipe_flushes
)(cmd_buffer
);
84 genX(flush_pipeline_select_3d
)(cmd_buffer
);
87 dw
= anv_batch_emitn(&cmd_buffer
->batch
, 5, GENX(3DSTATE_VERTEX_BUFFERS
));
88 GENX(VERTEX_BUFFER_STATE_pack
)(&cmd_buffer
->batch
, dw
+ 1,
89 &(struct GENX(VERTEX_BUFFER_STATE
)) {
90 .VertexBufferIndex
= 32, /* Reserved for this */
91 .AddressModifyEnable
= true,
92 .BufferStartingAddress
= src
,
94 .MOCS
= anv_mocs_for_bo(cmd_buffer
->device
, src
.bo
),
98 .EndAddress
= anv_address_add(src
, size
- 1),
102 dw
= anv_batch_emitn(&cmd_buffer
->batch
, 3, GENX(3DSTATE_VERTEX_ELEMENTS
));
103 GENX(VERTEX_ELEMENT_STATE_pack
)(&cmd_buffer
->batch
, dw
+ 1,
104 &(struct GENX(VERTEX_ELEMENT_STATE
)) {
105 .VertexBufferIndex
= 32,
107 .SourceElementFormat
= format
,
108 .SourceElementOffset
= 0,
109 .Component0Control
= (bs
>= 4) ? VFCOMP_STORE_SRC
: VFCOMP_STORE_0
,
110 .Component1Control
= (bs
>= 8) ? VFCOMP_STORE_SRC
: VFCOMP_STORE_0
,
111 .Component2Control
= (bs
>= 12) ? VFCOMP_STORE_SRC
: VFCOMP_STORE_0
,
112 .Component3Control
= (bs
>= 16) ? VFCOMP_STORE_SRC
: VFCOMP_STORE_0
,
116 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_VF_SGVS
), sgvs
);
119 /* Disable all shader stages */
120 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_VS
), vs
);
121 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_HS
), hs
);
122 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_TE
), te
);
123 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_DS
), DS
);
124 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_GS
), gs
);
125 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_PS
), gs
);
127 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_SBE
), sbe
) {
128 sbe
.VertexURBEntryReadOffset
= 1;
129 sbe
.NumberofSFOutputAttributes
= 1;
130 sbe
.VertexURBEntryReadLength
= 1;
132 sbe
.ForceVertexURBEntryReadLength
= true;
133 sbe
.ForceVertexURBEntryReadOffset
= true;
137 for (unsigned i
= 0; i
< 32; i
++)
138 sbe
.AttributeActiveComponentFormat
[i
] = ACF_XYZW
;
142 /* Emit URB setup. We tell it that the VS is active because we want it to
143 * allocate space for the VS. Even though one isn't run, we need VUEs to
144 * store the data that VF is going to pass to SOL.
146 const unsigned entry_size
[4] = { DIV_ROUND_UP(32, 64), 1, 1, 1 };
148 genX(emit_urb_setup
)(cmd_buffer
->device
, &cmd_buffer
->batch
,
149 cmd_buffer
->state
.current_l3_config
,
150 VK_SHADER_STAGE_VERTEX_BIT
, entry_size
);
152 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_SO_BUFFER
), sob
) {
154 sob
.SOBufferIndex
= 0;
156 sob
._3DCommandOpcode
= 0;
157 sob
._3DCommandSubOpcode
= SO_BUFFER_INDEX_0_CMD
;
159 sob
.MOCS
= anv_mocs_for_bo(cmd_buffer
->device
, dst
.bo
),
160 sob
.SurfaceBaseAddress
= dst
;
163 sob
.SOBufferEnable
= true;
164 sob
.SurfaceSize
= size
/ 4 - 1;
166 sob
.SurfacePitch
= bs
;
167 sob
.SurfaceEndAddress
= anv_address_add(dst
, size
);
171 /* As SOL writes out data, it updates the SO_WRITE_OFFSET registers with
172 * the end position of the stream. We need to reset this value to 0 at
173 * the beginning of the run or else SOL will start at the offset from
176 sob
.StreamOffsetWriteEnable
= true;
177 sob
.StreamOffset
= 0;
182 /* The hardware can do this for us on BDW+ (see above) */
183 anv_batch_emit(&cmd_buffer
->batch
, GENX(MI_LOAD_REGISTER_IMM
), load
) {
184 load
.RegisterOffset
= GENX(SO_WRITE_OFFSET0_num
);
189 dw
= anv_batch_emitn(&cmd_buffer
->batch
, 5, GENX(3DSTATE_SO_DECL_LIST
),
190 .StreamtoBufferSelects0
= (1 << 0),
192 GENX(SO_DECL_ENTRY_pack
)(&cmd_buffer
->batch
, dw
+ 3,
193 &(struct GENX(SO_DECL_ENTRY
)) {
195 .OutputBufferSlot
= 0,
197 .ComponentMask
= (1 << (bs
/ 4)) - 1,
201 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_STREAMOUT
), so
) {
202 so
.SOFunctionEnable
= true;
203 so
.RenderingDisable
= true;
204 so
.Stream0VertexReadOffset
= 0;
205 so
.Stream0VertexReadLength
= DIV_ROUND_UP(32, 64);
207 so
.Buffer0SurfacePitch
= bs
;
209 so
.SOBufferEnable0
= true;
214 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_VF_TOPOLOGY
), topo
) {
215 topo
.PrimitiveTopologyType
= _3DPRIM_POINTLIST
;
219 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DSTATE_VF_STATISTICS
), vf
) {
220 vf
.StatisticsEnable
= false;
223 anv_batch_emit(&cmd_buffer
->batch
, GENX(3DPRIMITIVE
), prim
) {
224 prim
.VertexAccessType
= SEQUENTIAL
;
225 prim
.PrimitiveTopologyType
= _3DPRIM_POINTLIST
;
226 prim
.VertexCountPerInstance
= size
/ bs
;
227 prim
.StartVertexLocation
= 0;
228 prim
.InstanceCount
= 1;
229 prim
.StartInstanceLocation
= 0;
230 prim
.BaseVertexLocation
= 0;
233 genX(cmd_buffer_update_dirty_vbs_for_gen8_vb_flush
)(cmd_buffer
, SEQUENTIAL
,
236 cmd_buffer
->state
.gfx
.dirty
|= ANV_CMD_DIRTY_PIPELINE
;