Release 4.12 include/linux/mtd/cfi_endian.h

/*
 * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <asm/byteorder.h>


#define CFI_HOST_ENDIAN 1

#define CFI_LITTLE_ENDIAN 2

#define CFI_BIG_ENDIAN 3

#if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP)

#define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN
#elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP)

#define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN
#elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP)

#define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN
#else
#error No CFI endianness defined
#endif


#define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN)

#define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN)

#define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN)

#define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN)


#define cpu_to_cfi8(map, x) (x)

#define cfi8_to_cpu(map, x) (x)

#define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x))

#define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x))

#define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x))

#define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x))

#define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x))

#define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x))


#define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x))

#define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x))

#define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x))

#define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x))
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Aaron Sierra
93
45.81%
1
25.00%
Linus Torvalds
89
43.84%
1
25.00%
David Woodhouse
21
10.34%
2
50.00%
Total
203
100.00%
4
100.00%
Directory: include/linux/mtd

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