1 /* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_fifo.h,v 1.2 2002/02/22 21:32:58 dawes Exp $ */
6 #define FFBFifo(__fmesa, __n) \
7 do { ffbScreenPrivate *__fScrn = (__fmesa)->ffbScreen; \
8 int __cur_slots = __fScrn->fifo_cache; \
9 if ((__cur_slots - (__n)) < 0) { \
10 ffb_fbcPtr __ffb = __fmesa->regs; \
11 do { __cur_slots = (((int)__ffb->ucsr & FFB_UCSR_FIFO_MASK) - 4); \
12 } while ((__cur_slots - (__n)) < 0); \
13 } (__fScrn)->fifo_cache = (__cur_slots - (__n)); \
16 #define FFBWait(__fmesa, __ffb) \
17 do { ffbScreenPrivate *__fScrn = (__fmesa)->ffbScreen; \
18 if (__fScrn->rp_active) { \
19 unsigned int __regval = (__ffb)->ucsr; \
20 while((__regval & FFB_UCSR_ALL_BUSY) != 0) { \
21 __regval = (__ffb)->ucsr; \
23 __fScrn->fifo_cache = ((int)(__regval & FFB_UCSR_FIFO_MASK)) - 4; \
24 __fScrn->rp_active = 0; \
28 #endif /* !(_FFB_FIFO_H) */