release/src-rt-6.x.4708/linux/linux-2.6.36/arch/cris/arch-v32/kernel/cache.c

   1 #include <linux/module.h>
   2 #include <asm/io.h>
   3 #include <arch/cache.h>
   4 #include <arch/hwregs/dma.h>
   5
   6
   7 inline void flush_dma_descr(struct dma_descr_data *descr, int flush_buf)
   8 {
   9         /* Flush descriptor to make sure we get correct in_eop and after. */
  10         asm volatile ("ftagd [%0]" :: "r" (descr));
  11         /* Flush buffer pointed out by descriptor. */
  12         if (flush_buf)
  13                 cris_flush_cache_range(phys_to_virt((unsigned)descr->buf),
  14                                 (unsigned)(descr->after - descr->buf));
  15 }
  16 EXPORT_SYMBOL(flush_dma_descr);
  17
  18 void flush_dma_list(struct dma_descr_data *descr)
  19 {
  20         while (1) {
  21                 flush_dma_descr(descr, 1);
  22                 if (descr->eol)
  23                         break;
  24                 descr = phys_to_virt((unsigned)descr->next);
  25         }
  26 }
  27 EXPORT_SYMBOL(flush_dma_list);
  28
  29 /* From cacheflush.S */
  30 EXPORT_SYMBOL(cris_flush_cache);
  31 /* From cacheflush.S */
  32 EXPORT_SYMBOL(cris_flush_cache_range);