blob: 16063783aa80c6ef200567543f98f011a2ac4dd2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/*
* 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;
}
}
|
