5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
34 lines
782 B
C
34 lines
782 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2004 - 2007 Paul Mundt
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <linux/dma-map-ops.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/addrspace.h>
|
|
|
|
void arch_dma_prep_coherent(struct page *page, size_t size)
|
|
{
|
|
__flush_purge_region(page_address(page), size);
|
|
}
|
|
|
|
void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
void *addr = sh_cacheop_vaddr(phys_to_virt(paddr));
|
|
|
|
switch (dir) {
|
|
case DMA_FROM_DEVICE: /* invalidate only */
|
|
__flush_invalidate_region(addr, size);
|
|
break;
|
|
case DMA_TO_DEVICE: /* writeback only */
|
|
__flush_wback_region(addr, size);
|
|
break;
|
|
case DMA_BIDIRECTIONAL: /* writeback and invalidate */
|
|
__flush_purge_region(addr, size);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|