src/mesa/drivers/dri/ffb/ffb_fifo.h

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/ffb/ffb_fifo.h,v 1.2 2002/02/22 21:32:58 dawes Exp $ */
   2
   3 #ifndef _FFB_FIFO_H
   4 #define _FFB_FIFO_H
   5
   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)); \
  14 } while(0)
  15
  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; \
  22                 } \
  23                 __fScrn->fifo_cache = ((int)(__regval & FFB_UCSR_FIFO_MASK)) - 4; \
  24                 __fScrn->rp_active = 0; \
  25         } \
  26 } while(0)
  27
  28 #endif /* !(_FFB_FIFO_H) */