5514a050 |
1 | /* |
2 | * SPU processing offload to TI C64x DSP using bsp's c64_tools |
3 | * (C) GraÅžvydas "notaz" Ignotas, 2015 |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy of |
6 | * this software and associated documentation files (the "Software"), to deal in |
7 | * the Software without restriction, including without limitation the rights to |
8 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
9 | * of the Software, and to permit persons to whom the Software is furnished to do |
10 | * so, subject to the following conditions: |
11 | * |
12 | * The above copyright notice and this permission notice shall be included in all |
13 | * copies or substantial portions of the 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 THE |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
21 | * SOFTWARE. |
22 | */ |
23 | |
24 | #include <dlfcn.h> |
de4a0279 |
25 | #include <stddef.h> |
3bd31caf |
26 | #include <unistd.h> |
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27 | |
5514a050 |
28 | #include <inc_libc64_mini.h> |
29 | #include "spu_c64x.h" |
30 | |
5514a050 |
31 | static struct { |
32 | void *handle; |
33 | int (*dsp_open)(void); |
34 | dsp_mem_region_t (*dsp_shm_alloc)(dsp_cache_t _type, sU32 _numBytes); |
35 | int (*dsp_shm_free)(dsp_mem_region_t _mem); |
36 | void (*dsp_close)(void); |
37 | int (*dsp_component_load)(const char *_path, const char *_name, dsp_component_id_t *_id); |
38 | int (*dsp_cache_inv_virt)(void *_virtAddr, sU32 _size); |
39 | int (*dsp_rpc_send)(const dsp_msg_t *_msgTo); |
40 | int (*dsp_rpc_recv)(dsp_msg_t *_msgFrom); |
de4a0279 |
41 | int (*dsp_rpc)(const dsp_msg_t *_msgTo, dsp_msg_t *_msgFrom); |
5514a050 |
42 | void (*dsp_logbuf_print)(void); |
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43 | |
44 | dsp_mem_region_t region; |
45 | dsp_component_id_t compid; |
5514a050 |
46 | } f; |
47 | |
48 | static void thread_work_start(void) |
49 | { |
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50 | struct region_mem *mem; |
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51 | dsp_msg_t msg; |
52 | int ret; |
53 | |
3bd31caf |
54 | // make sure new work is written out |
55 | __sync_synchronize(); |
56 | |
57 | // this should be safe, as dsp checks for new work even |
58 | // after it decrements ->active |
59 | // cacheline: i_done, active |
60 | f.dsp_cache_inv_virt(&worker->i_done, 64); |
61 | if (worker->active == ACTIVE_CNT) |
62 | return; |
63 | |
64 | // to start the DSP, dsp_rpc_send() must be used, |
65 | // but before that, previous request must be finished |
66 | if (worker->req_sent) { |
67 | if (worker->boot_cnt == worker->last_boot_cnt) { |
68 | // hopefully still booting |
69 | //printf("booting?\n"); |
70 | return; |
71 | } |
72 | |
73 | ret = f.dsp_rpc_recv(&msg); |
74 | if (ret != 0) { |
75 | fprintf(stderr, "dsp_rpc_recv failed: %d\n", ret); |
76 | f.dsp_logbuf_print(); |
77 | worker->req_sent = 0; |
78 | spu_config.iUseThread = 0; |
79 | return; |
80 | } |
81 | } |
82 | |
83 | f.dsp_cache_inv_virt(&worker->i_done, 64); |
84 | worker->last_boot_cnt = worker->boot_cnt; |
85 | |
86 | mem = (void *)f.region.virt_addr; |
87 | memcpy(&mem->spu_config, &spu_config, sizeof(mem->spu_config)); |
88 | |
89 | DSP_MSG_INIT(&msg, f.compid, CCMD_DOIT, f.region.phys_addr, 0); |
de4a0279 |
90 | ret = f.dsp_rpc_send(&msg); |
91 | if (ret != 0) { |
92 | fprintf(stderr, "dsp_rpc_send failed: %d\n", ret); |
93 | f.dsp_logbuf_print(); |
3bd31caf |
94 | spu_config.iUseThread = 0; |
95 | return; |
de4a0279 |
96 | } |
3bd31caf |
97 | worker->req_sent = 1; |
5514a050 |
98 | } |
99 | |
3bd31caf |
100 | static int thread_get_i_done(void) |
5514a050 |
101 | { |
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102 | f.dsp_cache_inv_virt(&worker->i_done, sizeof(worker->i_done)); |
103 | return worker->i_done; |
104 | } |
105 | |
106 | static void thread_work_wait_sync(struct work_item *work, int force) |
107 | { |
108 | int limit = 1000; |
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109 | int ns_to; |
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110 | |
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111 | ns_to = work->ns_to; |
112 | f.dsp_cache_inv_virt(work->RVB, sizeof(work->RVB[0]) * 2 * ns_to); |
113 | f.dsp_cache_inv_virt(work->SSumLR, sizeof(work->SSumLR[0]) * 2 * ns_to); |
114 | __builtin_prefetch(work->RVB); |
115 | __builtin_prefetch(work->SSumLR); |
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116 | |
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117 | while (worker->i_done == worker->i_reaped && limit-- > 0) { |
118 | if (!worker->active) { |
119 | printf("dsp: broken sync\n"); |
120 | worker->last_boot_cnt = ~0; |
121 | break; |
122 | } |
123 | |
124 | usleep(500); |
125 | f.dsp_cache_inv_virt(&worker->i_done, 64); |
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126 | } |
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127 | |
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128 | if (limit == 0) |
129 | printf("dsp: wait timeout\n"); |
130 | |
131 | // still in results loop? |
132 | if (worker->i_reaped != worker->i_done - 1) |
133 | return; |
134 | |
135 | if (worker->req_sent && (force || worker->i_done == worker->i_ready)) { |
136 | dsp_msg_t msg; |
137 | int ret; |
138 | |
139 | ret = f.dsp_rpc_recv(&msg); |
140 | if (ret != 0) { |
141 | fprintf(stderr, "dsp_rpc_recv failed: %d\n", ret); |
142 | f.dsp_logbuf_print(); |
143 | spu_config.iUseThread = 0; |
144 | } |
145 | worker->req_sent = 0; |
146 | } |
147 | |
148 | if (force) { |
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149 | f.dsp_cache_inv_virt(spu.SB, sizeof(spu.SB[0]) * SB_SIZE * 24); |
150 | f.dsp_cache_inv_virt(spu.spuMemC + 0x800, 0x800); |
de4a0279 |
151 | } |
5514a050 |
152 | } |
153 | |
154 | static void init_spu_thread(void) |
155 | { |
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156 | dsp_msg_t init_msg, msg_in; |
5514a050 |
157 | struct region_mem *mem; |
158 | int ret; |
159 | |
160 | if (f.handle == NULL) { |
161 | const char lib[] = "libc64.so.1"; |
162 | int failed = 0; |
163 | |
164 | f.handle = dlopen(lib, RTLD_NOW); |
165 | if (f.handle == NULL) { |
166 | fprintf(stderr, "can't load %s: %s\n", lib, dlerror()); |
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167 | goto fail_open; |
5514a050 |
168 | } |
169 | #define LDS(name) \ |
170 | failed |= (f.name = dlsym(f.handle, #name)) == NULL |
171 | LDS(dsp_open); |
172 | LDS(dsp_close); |
173 | LDS(dsp_shm_alloc); |
174 | LDS(dsp_shm_free); |
175 | LDS(dsp_cache_inv_virt); |
176 | LDS(dsp_component_load); |
177 | LDS(dsp_rpc_send); |
178 | LDS(dsp_rpc_recv); |
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179 | LDS(dsp_rpc); |
5514a050 |
180 | LDS(dsp_logbuf_print); |
181 | #undef LDS |
182 | if (failed) { |
183 | fprintf(stderr, "missing symbol(s) in %s\n", lib); |
184 | dlclose(f.handle); |
185 | f.handle = NULL; |
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186 | goto fail_open; |
5514a050 |
187 | } |
188 | } |
189 | |
190 | ret = f.dsp_open(); |
191 | if (ret != 0) { |
192 | fprintf(stderr, "dsp_open failed: %d\n", ret); |
3bd31caf |
193 | goto fail_open; |
5514a050 |
194 | } |
195 | |
3bd31caf |
196 | ret = f.dsp_component_load(NULL, COMPONENT_NAME, &f.compid); |
de4a0279 |
197 | if (ret != 0) { |
198 | fprintf(stderr, "dsp_component_load failed: %d\n", ret); |
199 | goto fail_cload; |
200 | } |
201 | |
3bd31caf |
202 | f.region = f.dsp_shm_alloc(DSP_CACHE_R, sizeof(*mem)); // writethrough |
203 | if (f.region.size < sizeof(*mem) || f.region.virt_addr == 0) { |
5514a050 |
204 | fprintf(stderr, "dsp_shm_alloc failed\n"); |
205 | goto fail_mem; |
206 | } |
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207 | mem = (void *)f.region.virt_addr; |
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208 | |
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209 | memcpy(&mem->spu_config, &spu_config, sizeof(mem->spu_config)); |
210 | |
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211 | DSP_MSG_INIT(&init_msg, f.compid, CCMD_INIT, f.region.phys_addr, 0); |
de4a0279 |
212 | ret = f.dsp_rpc(&init_msg, &msg_in); |
213 | if (ret != 0) { |
214 | fprintf(stderr, "dsp_rpc failed: %d\n", ret); |
215 | goto fail_init; |
216 | } |
217 | |
218 | if (mem->sizeof_region_mem != sizeof(*mem)) { |
219 | fprintf(stderr, "error: size mismatch 1: %d vs %zd\n", |
220 | mem->sizeof_region_mem, sizeof(*mem)); |
221 | goto fail_init; |
222 | } |
223 | if (mem->offsetof_s_chan1 != offsetof(typeof(*mem), s_chan[1])) { |
224 | fprintf(stderr, "error: size mismatch 2: %d vs %zd\n", |
225 | mem->offsetof_s_chan1, offsetof(typeof(*mem), s_chan[1])); |
226 | goto fail_init; |
227 | } |
3bd31caf |
228 | if (mem->offsetof_spos_3_20 != offsetof(typeof(*mem), worker.i[3].ch[20])) { |
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229 | fprintf(stderr, "error: size mismatch 3: %d vs %zd\n", |
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230 | mem->offsetof_spos_3_20, offsetof(typeof(*mem), worker.i[3].ch[20])); |
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231 | goto fail_init; |
232 | } |
233 | |
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234 | // override default allocations |
235 | free(spu.spuMemC); |
236 | spu.spuMemC = mem->spu_ram; |
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237 | free(spu.SB); |
238 | spu.SB = mem->SB; |
5514a050 |
239 | free(spu.s_chan); |
240 | spu.s_chan = mem->s_chan; |
241 | worker = &mem->worker; |
242 | |
3bd31caf |
243 | printf("spu: C64x DSP ready (id=%d).\n", (int)f.compid); |
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244 | f.dsp_logbuf_print(); |
245 | |
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246 | spu_config.iThreadAvail = 1; |
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247 | (void)do_channel_work; // used by DSP instead |
5514a050 |
248 | return; |
249 | |
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250 | fail_init: |
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251 | f.dsp_shm_free(f.region); |
5514a050 |
252 | fail_mem: |
de4a0279 |
253 | // no component unload func? |
254 | fail_cload: |
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255 | f.dsp_logbuf_print(); |
5514a050 |
256 | f.dsp_close(); |
3bd31caf |
257 | fail_open: |
258 | printf("spu: C64x DSP init failed.\n"); |
259 | spu_config.iUseThread = spu_config.iThreadAvail = 0; |
5514a050 |
260 | worker = NULL; |
261 | } |
262 | |
263 | static void exit_spu_thread(void) |
264 | { |
3bd31caf |
265 | dsp_msg_t msg; |
266 | |
5514a050 |
267 | if (worker == NULL) |
268 | return; |
269 | |
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270 | if (worker->req_sent) |
271 | f.dsp_rpc_recv(&msg); |
272 | |
273 | f.dsp_logbuf_print(); |
274 | f.dsp_shm_free(f.region); |
5514a050 |
275 | f.dsp_close(); |
276 | |
277 | spu.spuMemC = NULL; |
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278 | spu.SB = NULL; |
5514a050 |
279 | spu.s_chan = NULL; |
280 | worker = NULL; |
281 | } |
282 | |
283 | // vim:shiftwidth=1:expandtab |