/* Shut down the PVR chip from ready status, leaving it in 2D mode as it
was before the init. */
int pvr_shutdown() {
if(!pvr_state.valid)
return -1;
/* Set us invalid */
pvr_state.valid = 0;
/* Stop anything that might be going on */
PVR_SET(PVR_RESET, PVR_RESET_ALL);
PVR_SET(PVR_RESET, PVR_RESET_NONE);
/* Unhook any int handlers */
vblank_handler_remove(pvr_state.vbl_handle);
asic_evt_set_handler(ASIC_EVT_PVR_OPAQUEDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_OPAQUEDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_OPAQUEMODDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_OPAQUEMODDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_TRANSDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_TRANSDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_TRANSMODDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_TRANSMODDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_PTDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_PTDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_RENDERDONE, NULL);
asic_evt_disable(ASIC_EVT_PVR_RENDERDONE, ASIC_IRQ_DEFAULT);
/* Shut down PVR DMA */
pvr_dma_shutdown();
/* Invalidate our memory pool */
pvr_mem_reset();
/* Destroy the semaphore */
sem_destroy((semaphore_t *)&pvr_state.ready_sem);
mutex_destroy((mutex_t *)&pvr_state.dma_lock);
/* Clear video memory */
vid_empty();
/* Reset the frame buffer offset */
vid_waitvbl();
vid_set_start(0);
/* Return success */
return 0;
}
/* Initialize the PVR chip to ready status, enabling the specified lists
and using the specified parameters; note that bins and vertex buffers
come from the texture memory pool! Expects that a 2D mode was
initialized already using the vid_* API. */
int pvr_init(pvr_init_params_t *params) {
/* If we're already initialized, fail */
if (pvr_state.valid == 1) {
dbglog(DBG_WARNING, "pvr: pvr_init called twice!\n");
return -1;
}
/* Make sure we got valid parameters */
assert(params != NULL);
/* Make sure that a video mode has been initialized */
assert(vid_mode != NULL);
assert(vid_mode->width != 0 && vid_mode->height != 0);
/* Check for compatibility with 3D stuff */
if ((vid_mode->width % 32) != 0) {
dbglog(DBG_WARNING, "pvr: mode %dx%d isn't usable for 3D (width not multiples of 32)\n",
vid_mode->width, vid_mode->height);
return -1;
}
/* Clear out video memory */
vid_empty();
/* Reset all PVR systems (in case it's still doing something) */
PVR_SET(PVR_RESET, PVR_RESET_ALL);
PVR_SET(PVR_RESET, PVR_RESET_NONE);
/* Start off with a nice empty structure */
memset((void *)&pvr_state, 0, sizeof(pvr_state));
// Enable DMA if the user wants that.
pvr_state.dma_mode = params->dma_enabled;
/* Everything's clear, do the initial buffer pointer setup */
pvr_allocate_buffers(params);
// Initialize tile matrices
pvr_init_tile_matrices();
// Setup all pipeline targets. Yes, this is redundant. :) I just
// like to have it explicit.
pvr_state.ram_target = 0;
pvr_state.ta_target = 0;
pvr_state.view_target = 0;
pvr_state.list_reg_open = -1;
// Sync all the hardware registers with our pipeline state.
pvr_sync_view();
pvr_sync_reg_buffer();
// Clear out our stats
pvr_state.vbl_count = 0;
pvr_state.frame_last_time = 0;
pvr_state.buf_start_time = 0;
pvr_state.reg_start_time = 0;
pvr_state.rnd_start_time = 0;
pvr_state.frame_last_len = -1;
pvr_state.buf_last_len = -1;
pvr_state.reg_last_len = -1;
pvr_state.rnd_last_len = -1;
pvr_state.vtx_buf_used = 0;
pvr_state.vtx_buf_used_max = 0;
/* If we're on a VGA box, disable vertical smoothing */
if (vid_mode->cable_type == CT_VGA) {
dbglog(DBG_KDEBUG, "pvr: disabling vertical scaling for VGA\n");
PVR_SET(PVR_SCALER_CFG, 0x400);
} else {
dbglog(DBG_KDEBUG, "pvr: enabling vertical scaling for non-VGA\n");
PVR_SET(PVR_SCALER_CFG, 0x401);
}
/* Hook the PVR interrupt events on G2 */
pvr_state.vbl_handle = vblank_handler_add(pvr_int_handler);
asic_evt_set_handler(ASIC_EVT_PVR_OPAQUEDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_OPAQUEDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_OPAQUEMODDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_OPAQUEMODDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_TRANSDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_TRANSDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_TRANSMODDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_TRANSMODDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_PTDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_PTDONE, ASIC_IRQ_DEFAULT);
asic_evt_set_handler(ASIC_EVT_PVR_RENDERDONE, pvr_int_handler); asic_evt_enable(ASIC_EVT_PVR_RENDERDONE, ASIC_IRQ_DEFAULT);
/* 3d-specific parameters; these are all about rendering and
nothing to do with setting up the video; some stuff in here
is still unknown. */
PVR_SET(PVR_UNK_00A8, 0x15d1c951); /* M (Unknown magic value) */
PVR_SET(PVR_UNK_00A0, 0x00000020); /* M */
PVR_SET(PVR_FB_CFG_2, 0x00000009); /* alpha config */
PVR_SET(PVR_UNK_0110, 0x00093f39); /* M */
PVR_SET(PVR_UNK_0098, 0x00800408); /* M */
PVR_SET(PVR_TEXTURE_CLIP, 0x00000000); /* texture clip distance */
PVR_SET(PVR_SPANSORT_CFG, 0x00000101); /* M */
PVR_SET(PVR_FOG_TABLE_COLOR, 0x007f7f7f); /* Fog table color */
PVR_SET(PVR_FOG_VERTEX_COLOR, 0x007f7f7f); /* Fog vertex color */
PVR_SET(PVR_COLOR_CLAMP_MIN, 0x00000000); /* color clamp min */
PVR_SET(PVR_COLOR_CLAMP_MAX, 0xffffffff); /* color clamp max */
PVR_SET(PVR_UNK_0080, 0x00000007); /* M */
PVR_SET(PVR_CHEAP_SHADOW, 0x00000001); /* cheap shadow */
PVR_SET(PVR_UNK_007C, 0x0027df77); /* M */
PVR_SET(PVR_TEXTURE_MODULO, 0x00000000); /* stride width */
PVR_SET(PVR_FOG_DENSITY, 0x0000ff07); /* fog density */
PVR_SET(PVR_UNK_00C8, PVR_GET(0x00d4) << 16); /* M */
PVR_SET(PVR_UNK_0118, 0x00008040); /* M */
/* Initialize PVR DMA */
pvr_state.dma_lock = mutex_create();
pvr_dma_init();
/* Setup our wait-ready semaphore */
pvr_state.ready_sem = sem_create(0);
/* Set us as valid and return success */
pvr_state.valid = 1;
/* Validate our memory pool */
pvr_mem_reset();
/* This doesn't work right now... */
/*#ifndef NDEBUG
dbglog(DBG_KDEBUG, "pvr: free memory is %08lx bytes\n",
pvr_mem_available());
#endif*//* !NDEBUG */
return 0;
}