| 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 | #define SYSCALLS_C |
| 25 | #include <libc64_dsp/include/inc_overlay.h> |
| 26 | #include <stddef.h> |
| 27 | |
| 28 | #include "spu.c" |
| 29 | #include "spu_c64x.h" |
| 30 | |
| 31 | /* dummy deps, some bloat but avoids ifdef hell in SPU code.. */ |
| 32 | static void thread_work_start(void) {} |
| 33 | static void thread_work_wait_sync(void) {} |
| 34 | static void thread_sync_caches(void) {} |
| 35 | struct out_driver *out_current; |
| 36 | void SetupSound(void) {} |
| 37 | |
| 38 | #if 0 |
| 39 | // no use, c64_tools does BCACHE_wbInvAll.. |
| 40 | static void sync_caches(void) |
| 41 | { |
| 42 | int ns_to = worker->ns_to; |
| 43 | |
| 44 | syscalls.cache_wb(spu.sRVBStart, sizeof(spu.sRVBStart[0]) * 2 * ns_to, 1); |
| 45 | syscalls.cache_wb(SSumLR, sizeof(SSumLR[0]) * 2 * ns_to, 1); |
| 46 | |
| 47 | syscalls.cache_wbInv(worker, sizeof(*worker), 1); |
| 48 | } |
| 49 | #endif |
| 50 | |
| 51 | static unsigned int exec(dsp_component_cmd_t cmd, |
| 52 | unsigned int arg1, unsigned int arg2, |
| 53 | unsigned int *ret1, unsigned int *ret2) |
| 54 | { |
| 55 | struct region_mem *mem = (void *)arg1; |
| 56 | int i; |
| 57 | |
| 58 | switch (cmd) { |
| 59 | case CCMD_INIT: |
| 60 | InitADSR(); |
| 61 | |
| 62 | spu.spuMemC = mem->spu_ram; |
| 63 | spu.sRVBStart = mem->RVB; |
| 64 | SSumLR = mem->SSumLR; |
| 65 | spu.SB = mem->SB; |
| 66 | spu.s_chan = mem->s_chan; |
| 67 | worker = &mem->worker; |
| 68 | memcpy(&spu_config, &mem->spu_config, sizeof(spu_config)); |
| 69 | |
| 70 | mem->sizeof_region_mem = sizeof(*mem); |
| 71 | mem->offsetof_s_chan1 = offsetof(typeof(*mem), s_chan[1]); |
| 72 | mem->offsetof_worker_ram = offsetof(typeof(*mem), worker.ch[1]); |
| 73 | // seems to be unneeded, no write-alloc? but just in case.. |
| 74 | syscalls.cache_wb(&mem->sizeof_region_mem, 3 * 4, 1); |
| 75 | break; |
| 76 | |
| 77 | case CCMD_DOIT: |
| 78 | do_channel_work(); |
| 79 | // c64_tools lib does BCACHE_wbInvAll() when it receives mailbox irq, |
| 80 | // so there is no benefit of syncing only what's needed. |
| 81 | // But call wbInvAll() anyway in case c64_tools is ever fixed.. |
| 82 | //sync_caches(); |
| 83 | syscalls.cache_wbInvAll(); |
| 84 | break; |
| 85 | |
| 86 | default: |
| 87 | syscalls.printf("bad cmd: %x\n", cmd); |
| 88 | break; |
| 89 | } |
| 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | #pragma DATA_SECTION(component_test_dsp, ".sec_com"); |
| 95 | dsp_component_t component_test_dsp = { |
| 96 | { |
| 97 | NULL, /* init */ |
| 98 | exec, |
| 99 | NULL, /* exec fastcall RPC */ |
| 100 | NULL, /* exit */ |
| 101 | }, |
| 102 | |
| 103 | COMPONENT_NAME, |
| 104 | }; |
| 105 | |
| 106 | DSP_COMPONENT_MAIN |
| 107 | |
| 108 | // vim:shiftwidth=1:expandtab |