/* SPDX-License-Identifier: GPL-2.0-or-later *//* * Copyright (C) 2016 Imagination Technologies * Author: Paul Burton <paul.burton@mips.com> */ #ifndef __MIPS_ASM_MACHINE_H__#define __MIPS_ASM_MACHINE_H__ #include <linux/libfdt.h>#include <linux/of.h> struct mips_machine {	const struct of_device_id *matches;	const void *fdt;	bool (*detect)(void);	const void *(*fixup_fdt)(const void *fdt, const void *match_data);	unsigned int (*measure_hpt_freq)(void);}; extern long __mips_machines_start;extern long __mips_machines_end; #define MIPS_MACHINE(name)						\	static const struct mips_machine __mips_mach_##name		\		__used __section(".mips.machines.init") #define for_each_mips_machine(mach)					\	for ((mach) = (struct mips_machine *)&__mips_machines_start;	\	     (mach) < (struct mips_machine *)&__mips_machines_end;	\	     (mach)++) /** * mips_machine_is_compatible() - check if a machine is compatible with an FDT * @mach: the machine struct to check * @fdt: the FDT to check for compatibility with * * Check whether the given machine @mach is compatible with the given flattened * device tree @fdt, based upon the compatibility property of the root node. * * Return: the device id matched if any, else NULL */static inline const struct of_device_id *mips_machine_is_compatible(const struct mips_machine *mach, const void *fdt){	const struct of_device_id *match; 	if (!mach->matches)		return NULL; 	for (match = mach->matches; match->compatible[0]; match++) {		if (fdt_node_check_compatible(fdt, 0, match->compatible) == 0)			return match;	} 	return NULL;} /** * struct mips_fdt_fixup - Describe a fixup to apply to an FDT * @apply: applies the fixup to @fdt, returns zero on success else -errno * @description: a short description of the fixup * * Describes a fixup applied to an FDT blob by the @apply function. The * @description field provides a short description of the fixup intended for * use in error messages if the @apply function returns non-zero. */struct mips_fdt_fixup {	int (*apply)(void *fdt);	const char *description;}; /** * apply_mips_fdt_fixups() - apply fixups to an FDT blob * @fdt_out: buffer in which to place the fixed-up FDT * @fdt_out_size: the size of the @fdt_out buffer * @fdt_in: the FDT blob * @fixups: pointer to an array of fixups to be applied * * Loop through the array of fixups pointed to by @fixups, calling the apply * function on each until either one returns an error or we reach the end of * the list as indicated by an entry with a NULL apply field. * * Return: zero on success, else -errno */extern int __init apply_mips_fdt_fixups(void *fdt_out, size_t fdt_out_size,					const void *fdt_in,					const struct mips_fdt_fixup *fixups); #endif /* __MIPS_ASM_MACHINE_H__ */