switch (direction) {
case DMA_FROM_DEVICE: /* invalidate only */
- dma_cache_inv(vaddr, size);
+ invalidate_dcache_region(vaddr, size);
break;
case DMA_TO_DEVICE: /* writeback only */
- dma_cache_wback(vaddr, size);
+ clean_dcache_region(vaddr, size);
break;
case DMA_BIDIRECTIONAL: /* writeback and invalidate */
- dma_cache_wback_inv(vaddr, size);
+ flush_dcache_region(vaddr, size);
break;
default:
BUG();
struct page *page, *free, *end;
int order;
+ /* Following is a work-around (a.k.a. hack) to prevent pages
+ * with __GFP_COMP being passed to split_page() which cannot
+ * handle them. The real problem is that this flag probably
+ * should be 0 on AVR32 as it is not supported on this
+ * platform--see CONFIG_HUGETLB_PAGE. */
+ gfp &= ~(__GFP_COMP);
+
size = PAGE_ALIGN(size);
order = get_order(size);
}
EXPORT_SYMBOL(dma_free_coherent);
-#if 0
void *dma_alloc_writecombine(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t gfp)
{
struct page *page;
+ dma_addr_t phys;
page = __dma_alloc(dev, size, handle, gfp);
+ if (!page)
+ return NULL;
+
+ phys = page_to_phys(page);
+ *handle = phys;
/* Now, map the page into P3 with write-combining turned on */
- return __ioremap(page_to_phys(page), size, _PAGE_BUFFER);
+ return __ioremap(phys, size, _PAGE_BUFFER);
}
EXPORT_SYMBOL(dma_alloc_writecombine);
iounmap(cpu_addr);
- page = bus_to_page(handle);
+ page = phys_to_page(handle);
__dma_free(dev, size, page, handle);
}
EXPORT_SYMBOL(dma_free_writecombine);
-#endif