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r300RefillCurrentDmaRegion: Retry buffer acquisition only once, after 

waiting for the engine to idle. There's no way for another buffer to
become free anyway once the engine is idle.
This commit is contained in:
Nicolai Haehnle 2005-02-18 18:57:38 +00:00
parent 8281cca82f
commit 3f22c0966d
1 changed files with 12 additions and 7 deletions
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19
src/mesa/drivers/dri/r300/r300_ioctl.c
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@ -403,19 +403,24 @@ void r300RefillCurrentDmaRegion(r300ContextPtr rmesa)
LOCK_HARDWARE(&rmesa->radeon); /* no need to validate */
while (1) {
ret = drmDMA(fd, &dma);
if (ret == 0)
break;
ret = drmDMA(fd, &dma);
if (ret != 0) {
/* Try to release some buffers and wait until we can't get any more */
if (rmesa->dma.nr_released_bufs) {
r300FlushCmdBufLocked(rmesa, __FUNCTION__);
}
if (rmesa->radeon.do_usleeps) {
if (RADEON_DEBUG & DEBUG_DMA)
fprintf(stderr, "Waiting for buffers\n");
radeonWaitForIdleLocked(&rmesa->radeon);
ret = drmDMA(fd, &dma);
if (ret != 0) {
UNLOCK_HARDWARE(&rmesa->radeon);
DO_USLEEP(1);
LOCK_HARDWARE(&rmesa->radeon);
fprintf(stderr, "Error: Could not get dma buffer... exiting\n");
exit(-1);
}
}