1 #include <linux/module.h> 2 #include <asm/io.h> 3 #include <arch/cache.h> 4 #include <arch/hwregs/dma.h> 5 6 /* This file is used to workaround a cache bug, Guinness TR 106. */ 7 flush_dma_descr(struct dma_descr_data * descr,int flush_buf)8inline void flush_dma_descr(struct dma_descr_data *descr, int flush_buf) 9 { 10 /* Flush descriptor to make sure we get correct in_eop and after. */ 11 asm volatile ("ftagd [%0]" :: "r" (descr)); 12 /* Flush buffer pointed out by descriptor. */ 13 if (flush_buf) 14 cris_flush_cache_range(phys_to_virt((unsigned)descr->buf), 15 (unsigned)(descr->after - descr->buf)); 16 } 17 EXPORT_SYMBOL(flush_dma_descr); 18 flush_dma_list(struct dma_descr_data * descr)19void flush_dma_list(struct dma_descr_data *descr) 20 { 21 while (1) { 22 flush_dma_descr(descr, 1); 23 if (descr->eol) 24 break; 25 descr = phys_to_virt((unsigned)descr->next); 26 } 27 } 28 EXPORT_SYMBOL(flush_dma_list); 29 30 /* From cacheflush.S */ 31 EXPORT_SYMBOL(cris_flush_cache); 32 /* From cacheflush.S */ 33 EXPORT_SYMBOL(cris_flush_cache_range); 34