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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * linux/fs/befs/endian.h4 *5 * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com>6 *7 * Partially based on similar funtions in the sysv driver.8 */9 10#ifndef LINUX_BEFS_ENDIAN11#define LINUX_BEFS_ENDIAN12 13#include <asm/byteorder.h>14 15static inline u6416fs64_to_cpu(const struct super_block *sb, fs64 n)17{18	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)19		return le64_to_cpu((__force __le64)n);20	else21		return be64_to_cpu((__force __be64)n);22}23 24static inline fs6425cpu_to_fs64(const struct super_block *sb, u64 n)26{27	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)28		return (__force fs64)cpu_to_le64(n);29	else30		return (__force fs64)cpu_to_be64(n);31}32 33static inline u3234fs32_to_cpu(const struct super_block *sb, fs32 n)35{36	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)37		return le32_to_cpu((__force __le32)n);38	else39		return be32_to_cpu((__force __be32)n);40}41 42static inline fs3243cpu_to_fs32(const struct super_block *sb, u32 n)44{45	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)46		return (__force fs32)cpu_to_le32(n);47	else48		return (__force fs32)cpu_to_be32(n);49}50 51static inline u1652fs16_to_cpu(const struct super_block *sb, fs16 n)53{54	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)55		return le16_to_cpu((__force __le16)n);56	else57		return be16_to_cpu((__force __be16)n);58}59 60static inline fs1661cpu_to_fs16(const struct super_block *sb, u16 n)62{63	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)64		return (__force fs16)cpu_to_le16(n);65	else66		return (__force fs16)cpu_to_be16(n);67}68 69/* Composite types below here */70 71static inline befs_block_run72fsrun_to_cpu(const struct super_block *sb, befs_disk_block_run n)73{74	befs_block_run run;75 76	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {77		run.allocation_group = le32_to_cpu((__force __le32)n.allocation_group);78		run.start = le16_to_cpu((__force __le16)n.start);79		run.len = le16_to_cpu((__force __le16)n.len);80	} else {81		run.allocation_group = be32_to_cpu((__force __be32)n.allocation_group);82		run.start = be16_to_cpu((__force __be16)n.start);83		run.len = be16_to_cpu((__force __be16)n.len);84	}85	return run;86}87 88static inline befs_disk_block_run89cpu_to_fsrun(const struct super_block *sb, befs_block_run n)90{91	befs_disk_block_run run;92 93	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE) {94		run.allocation_group = cpu_to_le32(n.allocation_group);95		run.start = cpu_to_le16(n.start);96		run.len = cpu_to_le16(n.len);97	} else {98		run.allocation_group = cpu_to_be32(n.allocation_group);99		run.start = cpu_to_be16(n.start);100		run.len = cpu_to_be16(n.len);101	}102	return run;103}104 105static inline befs_data_stream106fsds_to_cpu(const struct super_block *sb, const befs_disk_data_stream *n)107{108	befs_data_stream data;109	int i;110 111	for (i = 0; i < BEFS_NUM_DIRECT_BLOCKS; ++i)112		data.direct[i] = fsrun_to_cpu(sb, n->direct[i]);113 114	data.max_direct_range = fs64_to_cpu(sb, n->max_direct_range);115	data.indirect = fsrun_to_cpu(sb, n->indirect);116	data.max_indirect_range = fs64_to_cpu(sb, n->max_indirect_range);117	data.double_indirect = fsrun_to_cpu(sb, n->double_indirect);118	data.max_double_indirect_range = fs64_to_cpu(sb,119						     n->120						     max_double_indirect_range);121	data.size = fs64_to_cpu(sb, n->size);122 123	return data;124}125 126#endif				//LINUX_BEFS_ENDIAN127