/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#include <linux/dma-map-ops.h>
#include <linux/kernel.h>
#include <asm/cacheflush.h>

#ifndef CONFIG_COLDFIRE
void arch_dma_prep_coherent(struct page *page, size_t size)
{
        cache_push(page_to_phys(page), size);
}

pgprot_t pgprot_dmacoherent(pgprot_t prot)
{
        if (CPU_IS_040_OR_060) {
                pgprot_val(prot) &= ~_PAGE_CACHE040;
                pgprot_val(prot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
        } else {
                pgprot_val(prot) |= _PAGE_NOCACHE030;
        }
        return prot;
}
#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */

void arch_sync_dma_for_device(phys_addr_t handle, size_t size,
                enum dma_data_direction dir)
{
        switch (dir) {
        case DMA_BIDIRECTIONAL:
        case DMA_TO_DEVICE:
                cache_push(handle, size);
                break;
        case DMA_FROM_DEVICE:
                cache_clear(handle, size);
                break;
        default:
                pr_err_ratelimited("dma_sync_single_for_device: unsupported dir %u\n",
                                   dir);
                break;
        }
}