| 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> |
| 25 | #include <stddef.h> |
| 26 | |
| 27 | #include <inc_libc64_mini.h> |
| 28 | #include "spu_c64x.h" |
| 29 | |
| 30 | static dsp_mem_region_t region; |
| 31 | static dsp_component_id_t compid; |
| 32 | |
| 33 | static struct { |
| 34 | void *handle; |
| 35 | int (*dsp_open)(void); |
| 36 | dsp_mem_region_t (*dsp_shm_alloc)(dsp_cache_t _type, sU32 _numBytes); |
| 37 | int (*dsp_shm_free)(dsp_mem_region_t _mem); |
| 38 | void (*dsp_close)(void); |
| 39 | int (*dsp_component_load)(const char *_path, const char *_name, dsp_component_id_t *_id); |
| 40 | int (*dsp_cache_inv_virt)(void *_virtAddr, sU32 _size); |
| 41 | int (*dsp_rpc_send)(const dsp_msg_t *_msgTo); |
| 42 | int (*dsp_rpc_recv)(dsp_msg_t *_msgFrom); |
| 43 | int (*dsp_rpc)(const dsp_msg_t *_msgTo, dsp_msg_t *_msgFrom); |
| 44 | void (*dsp_logbuf_print)(void); |
| 45 | } f; |
| 46 | |
| 47 | static void thread_work_start(void) |
| 48 | { |
| 49 | dsp_msg_t msg; |
| 50 | int ret; |
| 51 | |
| 52 | DSP_MSG_INIT(&msg, compid, CCMD_DOIT, 0, 0); |
| 53 | ret = f.dsp_rpc_send(&msg); |
| 54 | if (ret != 0) { |
| 55 | fprintf(stderr, "dsp_rpc_send failed: %d\n", ret); |
| 56 | f.dsp_logbuf_print(); |
| 57 | // maybe stop using the DSP? |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | static void thread_work_wait_sync(void) |
| 62 | { |
| 63 | dsp_msg_t msg; |
| 64 | int ns_to; |
| 65 | int ret; |
| 66 | |
| 67 | ns_to = worker->ns_to; |
| 68 | f.dsp_cache_inv_virt(spu.sRVBStart, sizeof(spu.sRVBStart[0]) * 2 * ns_to); |
| 69 | f.dsp_cache_inv_virt(SSumLR, sizeof(SSumLR[0]) * 2 * ns_to); |
| 70 | f.dsp_cache_inv_virt(&worker->r, sizeof(worker->r)); |
| 71 | worker->stale_cache = 1; // SB, ram |
| 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 | } |
| 78 | //f.dsp_logbuf_print(); |
| 79 | } |
| 80 | |
| 81 | // called before ARM decides to do SPU mixing itself |
| 82 | static void thread_sync_caches(void) |
| 83 | { |
| 84 | if (worker->stale_cache) { |
| 85 | f.dsp_cache_inv_virt(spu.SB, sizeof(spu.SB[0]) * SB_SIZE * 24); |
| 86 | f.dsp_cache_inv_virt(spu.spuMemC + 0x800, 0x800); |
| 87 | worker->stale_cache = 0; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | static void init_spu_thread(void) |
| 92 | { |
| 93 | dsp_msg_t init_msg, msg_in; |
| 94 | struct region_mem *mem; |
| 95 | int ret; |
| 96 | |
| 97 | if (f.handle == NULL) { |
| 98 | const char lib[] = "libc64.so.1"; |
| 99 | int failed = 0; |
| 100 | |
| 101 | f.handle = dlopen(lib, RTLD_NOW); |
| 102 | if (f.handle == NULL) { |
| 103 | fprintf(stderr, "can't load %s: %s\n", lib, dlerror()); |
| 104 | return; |
| 105 | } |
| 106 | #define LDS(name) \ |
| 107 | failed |= (f.name = dlsym(f.handle, #name)) == NULL |
| 108 | LDS(dsp_open); |
| 109 | LDS(dsp_close); |
| 110 | LDS(dsp_shm_alloc); |
| 111 | LDS(dsp_shm_free); |
| 112 | LDS(dsp_cache_inv_virt); |
| 113 | LDS(dsp_component_load); |
| 114 | LDS(dsp_rpc_send); |
| 115 | LDS(dsp_rpc_recv); |
| 116 | LDS(dsp_rpc); |
| 117 | LDS(dsp_logbuf_print); |
| 118 | #undef LDS |
| 119 | if (failed) { |
| 120 | fprintf(stderr, "missing symbol(s) in %s\n", lib); |
| 121 | dlclose(f.handle); |
| 122 | f.handle = NULL; |
| 123 | return; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | ret = f.dsp_open(); |
| 128 | if (ret != 0) { |
| 129 | fprintf(stderr, "dsp_open failed: %d\n", ret); |
| 130 | return; |
| 131 | } |
| 132 | |
| 133 | ret = f.dsp_component_load(NULL, COMPONENT_NAME, &compid); |
| 134 | if (ret != 0) { |
| 135 | fprintf(stderr, "dsp_component_load failed: %d\n", ret); |
| 136 | goto fail_cload; |
| 137 | } |
| 138 | |
| 139 | region = f.dsp_shm_alloc(DSP_CACHE_R, sizeof(*mem)); // writethrough |
| 140 | if (region.size < sizeof(*mem) || region.virt_addr == 0) { |
| 141 | fprintf(stderr, "dsp_shm_alloc failed\n"); |
| 142 | goto fail_mem; |
| 143 | } |
| 144 | mem = (void *)region.virt_addr; |
| 145 | |
| 146 | memcpy(&mem->spu_config, &spu_config, sizeof(mem->spu_config)); |
| 147 | |
| 148 | DSP_MSG_INIT(&init_msg, compid, CCMD_INIT, region.phys_addr, 0); |
| 149 | ret = f.dsp_rpc(&init_msg, &msg_in); |
| 150 | if (ret != 0) { |
| 151 | fprintf(stderr, "dsp_rpc failed: %d\n", ret); |
| 152 | goto fail_init; |
| 153 | } |
| 154 | |
| 155 | if (mem->sizeof_region_mem != sizeof(*mem)) { |
| 156 | fprintf(stderr, "error: size mismatch 1: %d vs %zd\n", |
| 157 | mem->sizeof_region_mem, sizeof(*mem)); |
| 158 | goto fail_init; |
| 159 | } |
| 160 | if (mem->offsetof_s_chan1 != offsetof(typeof(*mem), s_chan[1])) { |
| 161 | fprintf(stderr, "error: size mismatch 2: %d vs %zd\n", |
| 162 | mem->offsetof_s_chan1, offsetof(typeof(*mem), s_chan[1])); |
| 163 | goto fail_init; |
| 164 | } |
| 165 | if (mem->offsetof_worker_ram != offsetof(typeof(*mem), worker.ch[1])) { |
| 166 | fprintf(stderr, "error: size mismatch 3: %d vs %zd\n", |
| 167 | mem->offsetof_worker_ram, offsetof(typeof(*mem), worker.ch[1])); |
| 168 | goto fail_init; |
| 169 | } |
| 170 | |
| 171 | // override default allocations |
| 172 | free(spu.spuMemC); |
| 173 | spu.spuMemC = mem->spu_ram; |
| 174 | free(spu.sRVBStart); |
| 175 | spu.sRVBStart = mem->RVB; |
| 176 | free(SSumLR); |
| 177 | SSumLR = mem->SSumLR; |
| 178 | free(spu.SB); |
| 179 | spu.SB = mem->SB; |
| 180 | free(spu.s_chan); |
| 181 | spu.s_chan = mem->s_chan; |
| 182 | worker = &mem->worker; |
| 183 | |
| 184 | printf("spu: C64x DSP ready (id=%d).\n", (int)compid); |
| 185 | f.dsp_logbuf_print(); |
| 186 | |
| 187 | pcnt_init(); |
| 188 | (void)do_channel_work; // used by DSP instead |
| 189 | return; |
| 190 | |
| 191 | fail_init: |
| 192 | f.dsp_shm_free(region); |
| 193 | fail_mem: |
| 194 | // no component unload func? |
| 195 | fail_cload: |
| 196 | printf("spu: C64x DSP init failed.\n"); |
| 197 | f.dsp_logbuf_print(); |
| 198 | f.dsp_close(); |
| 199 | worker = NULL; |
| 200 | } |
| 201 | |
| 202 | static void exit_spu_thread(void) |
| 203 | { |
| 204 | if (worker == NULL) |
| 205 | return; |
| 206 | |
| 207 | if (worker->pending) |
| 208 | thread_work_wait_sync(); |
| 209 | f.dsp_shm_free(region); |
| 210 | f.dsp_close(); |
| 211 | |
| 212 | spu.spuMemC = NULL; |
| 213 | spu.sRVBStart = NULL; |
| 214 | SSumLR = NULL; |
| 215 | spu.SB = NULL; |
| 216 | spu.s_chan = NULL; |
| 217 | worker = NULL; |
| 218 | } |
| 219 | |
| 220 | // vim:shiftwidth=1:expandtab |