1/*
2 * Copyright �� 2001-2010 David Woodhouse <dwmw2@infradead.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17 *
18 */
19
20#include <asm/byteorder.h>
21
22#define CFI_HOST_ENDIAN 1
23#define CFI_LITTLE_ENDIAN 2
24#define CFI_BIG_ENDIAN 3
25
26#if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP)
27#define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN
28#elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP)
29#define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN
30#elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP)
31#define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN
32#else
33#error No CFI endianness defined
34#endif
35
36#define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN)
37#define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN)
38#define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN)
39#define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN)
40
41#define cpu_to_cfi8(map, x) (x)
42#define cfi8_to_cpu(map, x) (x)
43#define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x))
44#define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x))
45#define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x))
46#define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x))
47#define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x))
48#define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x))
49
50#define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x))
51#define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x))
52#define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x))
53#define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x))
54