1 /*
2 * Copyright © 2016 Intel Corporation
3 *
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:
10 *
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
13 * Software.
14 *
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
21 * IN THE SOFTWARE.
22 */
23
24 #include "anv_private.h"
25
26 #include "genxml/gen_macros.h"
27 #include "genxml/genX_pack.h"
28
29 #include "common/gen_l3_config.h"
30
31 /**
32 * This file implements some lightweight memcpy/memset operations on the GPU
33 * using a vertex buffer and streamout.
34 */
35
36 /**
37 * Returns the greatest common divisor of a and b that is a power of two.
38 */
39 static uint64_t
gcd_pow2_u64(uint64_t a,uint64_t b)40 gcd_pow2_u64(uint64_t a, uint64_t b)
41 {
42 assert(a > 0 || b > 0);
43
44 unsigned a_log2 = ffsll(a) - 1;
45 unsigned b_log2 = ffsll(b) - 1;
46
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.
50 */
51 return 1 << MIN2(a_log2, b_log2);
52 }
53
54 void
genX(cmd_buffer_so_memcpy)55 genX(cmd_buffer_so_memcpy)(struct anv_cmd_buffer *cmd_buffer,
56 struct anv_address dst, struct anv_address src,
57 uint32_t size)
58 {
59 if (size == 0)
60 return;
61
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);
65
66 enum isl_format format;
67 switch (bs) {
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;
71 default:
72 unreachable("Invalid size");
73 }
74
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);
79 }
80
81 genX(cmd_buffer_set_binding_for_gen8_vb_flush)(cmd_buffer, 32, src, size);
82 genX(cmd_buffer_apply_pipe_flushes)(cmd_buffer);
83
84 genX(flush_pipeline_select_3d)(cmd_buffer);
85
86 uint32_t *dw;
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,
93 .BufferPitch = bs,
94 .MOCS = anv_mocs(cmd_buffer->device, src.bo, 0),
95 #if (GEN_GEN >= 8)
96 .BufferSize = size,
97 #else
98 .EndAddress = anv_address_add(src, size - 1),
99 #endif
100 });
101
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,
106 .Valid = true,
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,
113 });
114
115 #if GEN_GEN >= 8
116 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_VF_INSTANCING), vfi) {
117 vfi.InstancingEnable = false;
118 vfi.VertexElementIndex = 0;
119 }
120 #endif
121
122 #if GEN_GEN >= 8
123 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_VF_SGVS), sgvs);
124 #endif
125
126 /* Disable all shader stages */
127 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_VS), vs);
128 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_HS), hs);
129 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_TE), te);
130 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_DS), DS);
131 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_GS), gs);
132 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_PS), gs);
133
134 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_SBE), sbe) {
135 sbe.VertexURBEntryReadOffset = 1;
136 sbe.NumberofSFOutputAttributes = 1;
137 sbe.VertexURBEntryReadLength = 1;
138 #if GEN_GEN >= 8
139 sbe.ForceVertexURBEntryReadLength = true;
140 sbe.ForceVertexURBEntryReadOffset = true;
141 #endif
142
143 #if GEN_GEN >= 9
144 for (unsigned i = 0; i < 32; i++)
145 sbe.AttributeActiveComponentFormat[i] = ACF_XYZW;
146 #endif
147 }
148
149 /* Emit URB setup. We tell it that the VS is active because we want it to
150 * allocate space for the VS. Even though one isn't run, we need VUEs to
151 * store the data that VF is going to pass to SOL.
152 */
153 const unsigned entry_size[4] = { DIV_ROUND_UP(32, 64), 1, 1, 1 };
154
155 genX(emit_urb_setup)(cmd_buffer->device, &cmd_buffer->batch,
156 cmd_buffer->state.current_l3_config,
157 VK_SHADER_STAGE_VERTEX_BIT, entry_size, NULL);
158
159 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_SO_BUFFER), sob) {
160 #if GEN_GEN < 12
161 sob.SOBufferIndex = 0;
162 #else
163 sob._3DCommandOpcode = 0;
164 sob._3DCommandSubOpcode = SO_BUFFER_INDEX_0_CMD;
165 #endif
166 sob.MOCS = anv_mocs(cmd_buffer->device, dst.bo, 0),
167 sob.SurfaceBaseAddress = dst;
168
169 #if GEN_GEN >= 8
170 sob.SOBufferEnable = true;
171 sob.SurfaceSize = size / 4 - 1;
172 #else
173 sob.SurfacePitch = bs;
174 sob.SurfaceEndAddress = anv_address_add(dst, size);
175 #endif
176
177 #if GEN_GEN >= 8
178 /* As SOL writes out data, it updates the SO_WRITE_OFFSET registers with
179 * the end position of the stream. We need to reset this value to 0 at
180 * the beginning of the run or else SOL will start at the offset from
181 * the previous draw.
182 */
183 sob.StreamOffsetWriteEnable = true;
184 sob.StreamOffset = 0;
185 #endif
186 }
187
188 #if GEN_GEN <= 7
189 /* The hardware can do this for us on BDW+ (see above) */
190 anv_batch_emit(&cmd_buffer->batch, GENX(MI_LOAD_REGISTER_IMM), load) {
191 load.RegisterOffset = GENX(SO_WRITE_OFFSET0_num);
192 load.DataDWord = 0;
193 }
194 #endif
195
196 dw = anv_batch_emitn(&cmd_buffer->batch, 5, GENX(3DSTATE_SO_DECL_LIST),
197 .StreamtoBufferSelects0 = (1 << 0),
198 .NumEntries0 = 1);
199 GENX(SO_DECL_ENTRY_pack)(&cmd_buffer->batch, dw + 3,
200 &(struct GENX(SO_DECL_ENTRY)) {
201 .Stream0Decl = {
202 .OutputBufferSlot = 0,
203 .RegisterIndex = 0,
204 .ComponentMask = (1 << (bs / 4)) - 1,
205 },
206 });
207
208 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_STREAMOUT), so) {
209 so.SOFunctionEnable = true;
210 so.RenderingDisable = true;
211 so.Stream0VertexReadOffset = 0;
212 so.Stream0VertexReadLength = DIV_ROUND_UP(32, 64);
213 #if GEN_GEN >= 8
214 so.Buffer0SurfacePitch = bs;
215 #else
216 so.SOBufferEnable0 = true;
217 #endif
218 }
219
220 #if GEN_GEN >= 8
221 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_VF_TOPOLOGY), topo) {
222 topo.PrimitiveTopologyType = _3DPRIM_POINTLIST;
223 }
224 #endif
225
226 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_VF_STATISTICS), vf) {
227 vf.StatisticsEnable = false;
228 }
229
230 #if GEN_GEN >= 12
231 /* Disable Primitive Replication. */
232 anv_batch_emit(&cmd_buffer->batch, GENX(3DSTATE_PRIMITIVE_REPLICATION), pr);
233 #endif
234
235 anv_batch_emit(&cmd_buffer->batch, GENX(3DPRIMITIVE), prim) {
236 prim.VertexAccessType = SEQUENTIAL;
237 prim.PrimitiveTopologyType = _3DPRIM_POINTLIST;
238 prim.VertexCountPerInstance = size / bs;
239 prim.StartVertexLocation = 0;
240 prim.InstanceCount = 1;
241 prim.StartInstanceLocation = 0;
242 prim.BaseVertexLocation = 0;
243 }
244
245 genX(cmd_buffer_update_dirty_vbs_for_gen8_vb_flush)(cmd_buffer, SEQUENTIAL,
246 1ull << 32);
247
248 cmd_buffer->state.gfx.dirty |= ANV_CMD_DIRTY_PIPELINE;
249 }
250