diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_spu.c')
| -rw-r--r-- | src/gallium/drivers/cell/ppu/cell_spu.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_spu.c b/src/gallium/drivers/cell/ppu/cell_spu.c index 973c0b1aa1..9508227e29 100644 --- a/src/gallium/drivers/cell/ppu/cell_spu.c +++ b/src/gallium/drivers/cell/ppu/cell_spu.c @@ -26,6 +26,11 @@ **************************************************************************/ +/** + * Utility/wrappers for communicating with the SPUs. + */ + + #include <pthread.h> #include "cell_spu.h" @@ -40,6 +45,9 @@ helpful headers: */ +/** + * Cell/SPU info that's not per-context. + */ struct cell_global_info cell_global; @@ -74,7 +82,11 @@ wait_mbox_message(spe_context_ptr_t ctx) } -static void *cell_thread_function(void *arg) +/** + * Called by pthread_create() to spawn an SPU thread. + */ +static void * +cell_thread_function(void *arg) { struct cell_init_info *init = (struct cell_init_info *) arg; unsigned entry = SPE_DEFAULT_ENTRY; @@ -92,7 +104,10 @@ static void *cell_thread_function(void *arg) /** - * Create the SPU threads + * Create the SPU threads. This is done once during driver initialization. + * This involves setting the the "init" message which is sent to each SPU. + * The init message specifies an SPU id, total number of SPUs, location + * and number of batch buffers, etc. */ void cell_start_spus(struct cell_context *cell) @@ -100,7 +115,6 @@ cell_start_spus(struct cell_context *cell) static boolean one_time_init = FALSE; uint i, j; - if (one_time_init) { fprintf(stderr, "PPU: Multiple rendering contexts not yet supported " "on Cell.\n"); @@ -120,6 +134,7 @@ cell_start_spus(struct cell_context *cell) for (i = 0; i < cell->num_spus; i++) { cell_global.inits[i].id = i; cell_global.inits[i].num_spus = cell->num_spus; + cell_global.inits[i].debug_flags = cell->debug_flags; cell_global.inits[i].cmd = &cell_global.command[i]; for (j = 0; j < CELL_NUM_BUFFERS; j++) { cell_global.inits[i].buffers[j] = cell->buffer[j]; @@ -137,14 +152,17 @@ cell_start_spus(struct cell_context *cell) exit(1); } - pthread_create(&cell_global.spe_threads[i], NULL, &cell_thread_function, - &cell_global.inits[i]); + pthread_create(&cell_global.spe_threads[i], /* returned thread handle */ + NULL, /* pthread attribs */ + &cell_thread_function, /* start routine */ + &cell_global.inits[i]); /* thread argument */ } } /** * Tell all the SPUs to stop/exit. + * This is done when the driver's exiting / cleaning up. */ void cell_spu_exit(struct cell_context *cell) |