40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org>
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*/
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#include <asm/byteorder.h>
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#define CFI_HOST_ENDIAN 1
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#define CFI_LITTLE_ENDIAN 2
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#define CFI_BIG_ENDIAN 3
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#if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP)
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#define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN
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#elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP)
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#define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN
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#elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP)
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#define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN
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#else
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#error No CFI endianness defined
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#endif
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#define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN)
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#define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN)
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#define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN)
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#define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN)
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#define cpu_to_cfi8(map, x) (x)
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#define cfi8_to_cpu(map, x) (x)
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#define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x))
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#define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x))
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#define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x))
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#define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x))
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#define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x))
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#define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x))
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#define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x))
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#define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x))
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#define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x))
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#define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x))
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