1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
/*
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Marek Olšák <maraeo@gmail.com>
*/
#include "si_pipe.h"
#include "sid.h"
#include "radeon/r600_cs.h"
/* Set this if you want the 3D engine to wait until CP DMA is done.
* It should be set on the last CP DMA packet. */
#define R600_CP_DMA_SYNC (1 << 0) /* R600+ */
/* Set this if the source data was used as a destination in a previous CP DMA
* packet. It's for preventing a read-after-write (RAW) hazard between two
* CP DMA packets. */
#define SI_CP_DMA_RAW_WAIT (1 << 1) /* SI+ */
#define CIK_CP_DMA_USE_L2 (1 << 2)
/* Emit a CP DMA packet to do a copy from one buffer to another.
* The size must fit in bits [20:0].
*/
static void si_emit_cp_dma_copy_buffer(struct si_context *sctx,
uint64_t dst_va, uint64_t src_va,
unsigned size, unsigned flags)
{
struct radeon_winsys_cs *cs = sctx->b.rings.gfx.cs;
uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? S_411_CP_SYNC(1) : 0;
uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? S_414_RAW_WAIT(1) : 0;
uint32_t sel = flags & CIK_CP_DMA_USE_L2 ?
S_411_SRC_SEL(V_411_SRC_ADDR_TC_L2) |
S_411_DSL_SEL(V_411_DST_ADDR_TC_L2) : 0;
assert(size);
assert((size & ((1<<21)-1)) == size);
if (sctx->b.chip_class >= CIK) {
radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0));
radeon_emit(cs, sync_flag | sel); /* CP_SYNC [31] */
radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */
radeon_emit(cs, src_va >> 32); /* SRC_ADDR_HI [31:0] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [31:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
} else {
radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0));
radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */
radeon_emit(cs, sync_flag | ((src_va >> 32) & 0xffff)); /* CP_SYNC [31] | SRC_ADDR_HI [15:0] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
}
}
/* Emit a CP DMA packet to clear a buffer. The size must fit in bits [20:0]. */
static void si_emit_cp_dma_clear_buffer(struct si_context *sctx,
uint64_t dst_va, unsigned size,
uint32_t clear_value, unsigned flags)
{
struct radeon_winsys_cs *cs = sctx->b.rings.gfx.cs;
uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? S_411_CP_SYNC(1) : 0;
uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? S_414_RAW_WAIT(1) : 0;
uint32_t dst_sel = flags & CIK_CP_DMA_USE_L2 ? S_411_DSL_SEL(V_411_DST_ADDR_TC_L2) : 0;
assert(size);
assert((size & ((1<<21)-1)) == size);
if (sctx->b.chip_class >= CIK) {
radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0));
radeon_emit(cs, sync_flag | dst_sel | S_411_SRC_SEL(V_411_DATA)); /* CP_SYNC [31] | SRC_SEL[30:29] */
radeon_emit(cs, clear_value); /* DATA [31:0] */
radeon_emit(cs, 0);
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
} else {
radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0));
radeon_emit(cs, clear_value); /* DATA [31:0] */
radeon_emit(cs, sync_flag | S_411_SRC_SEL(V_411_DATA)); /* CP_SYNC [31] | SRC_SEL[30:29] */
radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */
radeon_emit(cs, size | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
}
}
/* The max number of bytes to copy per packet. */
#define CP_DMA_MAX_BYTE_COUNT ((1 << 21) - 8)
static void si_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
unsigned offset, unsigned size, unsigned value,
bool is_framebuffer)
{
struct si_context *sctx = (struct si_context*)ctx;
unsigned flush_flags, tc_l2_flag;
if (!size)
return;
/* Mark the buffer range of destination as valid (initialized),
* so that transfer_map knows it should wait for the GPU when mapping
* that range. */
util_range_add(&r600_resource(dst)->valid_buffer_range, offset,
offset + size);
/* Fallback for unaligned clears. */
if (offset % 4 != 0 || size % 4 != 0) {
uint32_t *map = sctx->b.ws->buffer_map(r600_resource(dst)->cs_buf,
sctx->b.rings.gfx.cs,
PIPE_TRANSFER_WRITE);
size /= 4;
for (unsigned i = 0; i < size; i++)
*map++ = value;
return;
}
uint64_t va = r600_resource(dst)->gpu_address + offset;
/* Flush the caches where the resource is bound. */
if (is_framebuffer) {
flush_flags = SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER;
tc_l2_flag = 0;
} else {
flush_flags = SI_CONTEXT_INV_TC_L1 |
(sctx->b.chip_class == SI ? SI_CONTEXT_INV_TC_L2 : 0) |
SI_CONTEXT_INV_KCACHE;
tc_l2_flag = sctx->b.chip_class == SI ? 0 : CIK_CP_DMA_USE_L2;
}
sctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH |
flush_flags;
while (size) {
unsigned byte_count = MIN2(size, CP_DMA_MAX_BYTE_COUNT);
unsigned dma_flags = tc_l2_flag;
si_need_cs_space(sctx, 7 + (sctx->b.flags ? sctx->cache_flush.num_dw : 0),
FALSE);
/* This must be done after need_cs_space. */
r600_context_bo_reloc(&sctx->b, &sctx->b.rings.gfx,
(struct r600_resource*)dst, RADEON_USAGE_WRITE,
RADEON_PRIO_MIN);
/* Flush the caches for the first copy only.
* Also wait for the previous CP DMA operations. */
if (sctx->b.flags) {
si_emit_cache_flush(&sctx->b, NULL);
dma_flags |= SI_CP_DMA_RAW_WAIT; /* same as WAIT_UNTIL=CP_DMA_IDLE */
}
/* Do the synchronization after the last copy, so that all data is written to memory. */
if (size == byte_count)
dma_flags |= R600_CP_DMA_SYNC;
/* Emit the clear packet. */
si_emit_cp_dma_clear_buffer(sctx, va, byte_count, value, dma_flags);
size -= byte_count;
va += byte_count;
}
/* Flush the caches again in case the 3D engine has been prefetching
* the resource. */
sctx->b.flags |= flush_flags;
if (tc_l2_flag)
r600_resource(dst)->TC_L2_dirty = true;
}
void si_copy_buffer(struct si_context *sctx,
struct pipe_resource *dst, struct pipe_resource *src,
uint64_t dst_offset, uint64_t src_offset, unsigned size,
bool is_framebuffer)
{
unsigned flush_flags, tc_l2_flag;
if (!size)
return;
/* Mark the buffer range of destination as valid (initialized),
* so that transfer_map knows it should wait for the GPU when mapping
* that range. */
util_range_add(&r600_resource(dst)->valid_buffer_range, dst_offset,
dst_offset + size);
dst_offset += r600_resource(dst)->gpu_address;
src_offset += r600_resource(src)->gpu_address;
/* Flush the caches where the resource is bound. */
if (is_framebuffer) {
flush_flags = SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER;
tc_l2_flag = 0;
} else {
flush_flags = SI_CONTEXT_INV_TC_L1 |
(sctx->b.chip_class == SI ? SI_CONTEXT_INV_TC_L2 : 0) |
SI_CONTEXT_INV_KCACHE;
tc_l2_flag = sctx->b.chip_class == SI ? 0 : CIK_CP_DMA_USE_L2;
}
sctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH |
flush_flags;
while (size) {
unsigned sync_flags = tc_l2_flag;
unsigned byte_count = MIN2(size, CP_DMA_MAX_BYTE_COUNT);
si_need_cs_space(sctx, 7 + (sctx->b.flags ? sctx->cache_flush.num_dw : 0), FALSE);
/* Flush the caches for the first copy only. Also wait for old CP DMA packets to complete. */
if (sctx->b.flags) {
si_emit_cache_flush(&sctx->b, NULL);
sync_flags |= SI_CP_DMA_RAW_WAIT;
}
/* Do the synchronization after the last copy, so that all data is written to memory. */
if (size == byte_count) {
sync_flags |= R600_CP_DMA_SYNC;
}
/* This must be done after r600_need_cs_space. */
r600_context_bo_reloc(&sctx->b, &sctx->b.rings.gfx, (struct r600_resource*)src,
RADEON_USAGE_READ, RADEON_PRIO_MIN);
r600_context_bo_reloc(&sctx->b, &sctx->b.rings.gfx, (struct r600_resource*)dst,
RADEON_USAGE_WRITE, RADEON_PRIO_MIN);
si_emit_cp_dma_copy_buffer(sctx, dst_offset, src_offset, byte_count, sync_flags);
size -= byte_count;
src_offset += byte_count;
dst_offset += byte_count;
}
/* Flush the caches again in case the 3D engine has been prefetching
* the resource. */
sctx->b.flags |= flush_flags;
if (tc_l2_flag)
r600_resource(dst)->TC_L2_dirty = true;
}
void si_init_cp_dma_functions(struct si_context *sctx)
{
sctx->b.clear_buffer = si_clear_buffer;
}
|
