| 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 <inc_libc64_mini.h> |
| 26 | #include "spu_c64x.h" |
| 27 | |
| 28 | static dsp_mem_region_t region; |
| 29 | |
| 30 | static struct { |
| 31 | void *handle; |
| 32 | int (*dsp_open)(void); |
| 33 | dsp_mem_region_t (*dsp_shm_alloc)(dsp_cache_t _type, sU32 _numBytes); |
| 34 | int (*dsp_shm_free)(dsp_mem_region_t _mem); |
| 35 | void (*dsp_close)(void); |
| 36 | int (*dsp_component_load)(const char *_path, const char *_name, dsp_component_id_t *_id); |
| 37 | int (*dsp_cache_inv_virt)(void *_virtAddr, sU32 _size); |
| 38 | int (*dsp_rpc_send)(const dsp_msg_t *_msgTo); |
| 39 | int (*dsp_rpc_recv)(dsp_msg_t *_msgFrom); |
| 40 | void (*dsp_logbuf_print)(void); |
| 41 | } f; |
| 42 | |
| 43 | static void thread_work_start(void) |
| 44 | { |
| 45 | do_channel_work(); |
| 46 | } |
| 47 | |
| 48 | static void thread_work_wait_sync(void) |
| 49 | { |
| 50 | } |
| 51 | |
| 52 | static void init_spu_thread(void) |
| 53 | { |
| 54 | struct region_mem *mem; |
| 55 | int ret; |
| 56 | |
| 57 | if (f.handle == NULL) { |
| 58 | const char lib[] = "libc64.so.1"; |
| 59 | int failed = 0; |
| 60 | |
| 61 | f.handle = dlopen(lib, RTLD_NOW); |
| 62 | if (f.handle == NULL) { |
| 63 | fprintf(stderr, "can't load %s: %s\n", lib, dlerror()); |
| 64 | return; |
| 65 | } |
| 66 | #define LDS(name) \ |
| 67 | failed |= (f.name = dlsym(f.handle, #name)) == NULL |
| 68 | LDS(dsp_open); |
| 69 | LDS(dsp_close); |
| 70 | LDS(dsp_shm_alloc); |
| 71 | LDS(dsp_shm_free); |
| 72 | LDS(dsp_cache_inv_virt); |
| 73 | LDS(dsp_component_load); |
| 74 | LDS(dsp_rpc_send); |
| 75 | LDS(dsp_rpc_recv); |
| 76 | LDS(dsp_logbuf_print); |
| 77 | #undef LDS |
| 78 | if (failed) { |
| 79 | fprintf(stderr, "missing symbol(s) in %s\n", lib); |
| 80 | dlclose(f.handle); |
| 81 | f.handle = NULL; |
| 82 | return; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | ret = f.dsp_open(); |
| 87 | if (ret != 0) { |
| 88 | fprintf(stderr, "dsp_open failed: %d\n", ret); |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | region = f.dsp_shm_alloc(DSP_CACHE_R, sizeof(*mem)); // writethrough |
| 93 | if (region.size < sizeof(*mem) || region.virt_addr == 0) { |
| 94 | fprintf(stderr, "dsp_shm_alloc failed\n"); |
| 95 | goto fail_mem; |
| 96 | } |
| 97 | mem = (void *)region.virt_addr; |
| 98 | |
| 99 | // override default allocations |
| 100 | free(spu.spuMemC); |
| 101 | spu.spuMemC = mem->spu_ram; |
| 102 | free(spu.sRVBStart); |
| 103 | spu.sRVBStart = mem->RVB; |
| 104 | free(SSumLR); |
| 105 | SSumLR = mem->SSumLR; |
| 106 | free(spu.s_chan); |
| 107 | spu.s_chan = mem->s_chan; |
| 108 | worker = &mem->worker; |
| 109 | |
| 110 | printf("C64x DSP ready.\n"); |
| 111 | return; |
| 112 | |
| 113 | fail_mem: |
| 114 | f.dsp_close(); |
| 115 | worker = NULL; |
| 116 | } |
| 117 | |
| 118 | static void exit_spu_thread(void) |
| 119 | { |
| 120 | if (worker == NULL) |
| 121 | return; |
| 122 | |
| 123 | if (worker->pending) |
| 124 | thread_work_wait_sync(); |
| 125 | f.dsp_shm_free(region); |
| 126 | f.dsp_close(); |
| 127 | |
| 128 | spu.spuMemC = NULL; |
| 129 | spu.sRVBStart = NULL; |
| 130 | SSumLR = NULL; |
| 131 | spu.s_chan = NULL; |
| 132 | worker = NULL; |
| 133 | } |
| 134 | |
| 135 | // vim:shiftwidth=1:expandtab |