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/*
* SPU processing offload to TI C64x DSP using bsp's c64_tools
* (C) Gražvydas "notaz" Ignotas, 2015
*
* 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 the rights to
* use, copy, modify, merge, publish, distribute, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include <dlfcn.h>
#include <stddef.h>
#include <inc_libc64_mini.h>
#include "spu_c64x.h"
static dsp_mem_region_t region;
static dsp_component_id_t compid;
static struct {
void *handle;
int (*dsp_open)(void);
dsp_mem_region_t (*dsp_shm_alloc)(dsp_cache_t _type, sU32 _numBytes);
int (*dsp_shm_free)(dsp_mem_region_t _mem);
void (*dsp_close)(void);
int (*dsp_component_load)(const char *_path, const char *_name, dsp_component_id_t *_id);
int (*dsp_cache_inv_virt)(void *_virtAddr, sU32 _size);
int (*dsp_rpc_send)(const dsp_msg_t *_msgTo);
int (*dsp_rpc_recv)(dsp_msg_t *_msgFrom);
int (*dsp_rpc)(const dsp_msg_t *_msgTo, dsp_msg_t *_msgFrom);
void (*dsp_logbuf_print)(void);
} f;
static void thread_work_start(void)
{
dsp_msg_t msg;
int ret;
DSP_MSG_INIT(&msg, compid, CCMD_DOIT, 0, 0);
ret = f.dsp_rpc_send(&msg);
if (ret != 0) {
fprintf(stderr, "dsp_rpc_send failed: %d\n", ret);
f.dsp_logbuf_print();
// maybe stop using the DSP?
}
}
static void thread_work_wait_sync(void)
{
dsp_msg_t msg;
int ns_to;
int ret;
ns_to = worker->ns_to;
f.dsp_cache_inv_virt(spu.sRVBStart, sizeof(spu.sRVBStart[0]) * 2 * ns_to);
f.dsp_cache_inv_virt(SSumLR, sizeof(SSumLR[0]) * 2 * ns_to);
f.dsp_cache_inv_virt(&worker->r, sizeof(worker->r));
worker->stale_cache = 1; // SB, ram
ret = f.dsp_rpc_recv(&msg);
if (ret != 0) {
fprintf(stderr, "dsp_rpc_recv failed: %d\n", ret);
f.dsp_logbuf_print();
}
//f.dsp_logbuf_print();
}
// called before ARM decides to do SPU mixing itself
static void thread_sync_caches(void)
{
if (worker->stale_cache) {
f.dsp_cache_inv_virt(spu.SB, sizeof(spu.SB[0]) * SB_SIZE * 24);
f.dsp_cache_inv_virt(spu.spuMemC + 0x800, 0x800);
worker->stale_cache = 0;
}
}
static void init_spu_thread(void)
{
dsp_msg_t init_msg, msg_in;
struct region_mem *mem;
int ret;
if (f.handle == NULL) {
const char lib[] = "libc64.so.1";
int failed = 0;
f.handle = dlopen(lib, RTLD_NOW);
if (f.handle == NULL) {
fprintf(stderr, "can't load %s: %s\n", lib, dlerror());
return;
}
#define LDS(name) \
failed |= (f.name = dlsym(f.handle, #name)) == NULL
LDS(dsp_open);
LDS(dsp_close);
LDS(dsp_shm_alloc);
LDS(dsp_shm_free);
LDS(dsp_cache_inv_virt);
LDS(dsp_component_load);
LDS(dsp_rpc_send);
LDS(dsp_rpc_recv);
LDS(dsp_rpc);
LDS(dsp_logbuf_print);
#undef LDS
if (failed) {
fprintf(stderr, "missing symbol(s) in %s\n", lib);
dlclose(f.handle);
f.handle = NULL;
return;
}
}
ret = f.dsp_open();
if (ret != 0) {
fprintf(stderr, "dsp_open failed: %d\n", ret);
return;
}
ret = f.dsp_component_load(NULL, COMPONENT_NAME, &compid);
if (ret != 0) {
fprintf(stderr, "dsp_component_load failed: %d\n", ret);
goto fail_cload;
}
region = f.dsp_shm_alloc(DSP_CACHE_R, sizeof(*mem)); // writethrough
if (region.size < sizeof(*mem) || region.virt_addr == 0) {
fprintf(stderr, "dsp_shm_alloc failed\n");
goto fail_mem;
}
mem = (void *)region.virt_addr;
memcpy(&mem->spu_config, &spu_config, sizeof(mem->spu_config));
DSP_MSG_INIT(&init_msg, compid, CCMD_INIT, region.phys_addr, 0);
ret = f.dsp_rpc(&init_msg, &msg_in);
if (ret != 0) {
fprintf(stderr, "dsp_rpc failed: %d\n", ret);
goto fail_init;
}
if (mem->sizeof_region_mem != sizeof(*mem)) {
fprintf(stderr, "error: size mismatch 1: %d vs %zd\n",
mem->sizeof_region_mem, sizeof(*mem));
goto fail_init;
}
if (mem->offsetof_s_chan1 != offsetof(typeof(*mem), s_chan[1])) {
fprintf(stderr, "error: size mismatch 2: %d vs %zd\n",
mem->offsetof_s_chan1, offsetof(typeof(*mem), s_chan[1]));
goto fail_init;
}
if (mem->offsetof_worker_ram != offsetof(typeof(*mem), worker.ch[1])) {
fprintf(stderr, "error: size mismatch 3: %d vs %zd\n",
mem->offsetof_worker_ram, offsetof(typeof(*mem), worker.ch[1]));
goto fail_init;
}
// override default allocations
free(spu.spuMemC);
spu.spuMemC = mem->spu_ram;
free(spu.sRVBStart);
spu.sRVBStart = mem->RVB;
free(SSumLR);
SSumLR = mem->SSumLR;
free(spu.SB);
spu.SB = mem->SB;
free(spu.s_chan);
spu.s_chan = mem->s_chan;
worker = &mem->worker;
printf("spu: C64x DSP ready (id=%d).\n", (int)compid);
f.dsp_logbuf_print();
pcnt_init();
(void)do_channel_work; // used by DSP instead
return;
fail_init:
f.dsp_shm_free(region);
fail_mem:
// no component unload func?
fail_cload:
printf("spu: C64x DSP init failed.\n");
f.dsp_logbuf_print();
f.dsp_close();
worker = NULL;
}
static void exit_spu_thread(void)
{
if (worker == NULL)
return;
if (worker->pending)
thread_work_wait_sync();
f.dsp_shm_free(region);
f.dsp_close();
spu.spuMemC = NULL;
spu.sRVBStart = NULL;
SSumLR = NULL;
spu.SB = NULL;
spu.s_chan = NULL;
worker = NULL;
}
// vim:shiftwidth=1:expandtab
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