| /* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_fifo.h,v 1.2 2002/02/22 21:32:58 dawes Exp $ */ |
| |
| #ifndef _FFB_FIFO_H |
| #define _FFB_FIFO_H |
| |
| #define FFBFifo(__fmesa, __n) \ |
| do { ffbScreenPrivate *__fScrn = (__fmesa)->ffbScreen; \ |
| int __cur_slots = __fScrn->fifo_cache; \ |
| if ((__cur_slots - (__n)) < 0) { \ |
| ffb_fbcPtr __ffb = __fmesa->regs; \ |
| do { __cur_slots = (((int)__ffb->ucsr & FFB_UCSR_FIFO_MASK) - 4); \ |
| } while ((__cur_slots - (__n)) < 0); \ |
| } (__fScrn)->fifo_cache = (__cur_slots - (__n)); \ |
| } while(0) |
| |
| #define FFBWait(__fmesa, __ffb) \ |
| do { ffbScreenPrivate *__fScrn = (__fmesa)->ffbScreen; \ |
| if (__fScrn->rp_active) { \ |
| unsigned int __regval = (__ffb)->ucsr; \ |
| while((__regval & FFB_UCSR_ALL_BUSY) != 0) { \ |
| __regval = (__ffb)->ucsr; \ |
| } \ |
| __fScrn->fifo_cache = ((int)(__regval & FFB_UCSR_FIFO_MASK)) - 4; \ |
| __fScrn->rp_active = 0; \ |
| } \ |
| } while(0) |
| |
| #endif /* !(_FFB_FIFO_H) */ |
