arch/x86/include/asm/cpu_device_id.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CPU_DEVICE_ID
#define _CPU_DEVICE_ID 1

/*
 * Declare drivers belonging to specific x86 CPUs
 * Similar in spirit to pci_device_id and related PCI functions
 */

#include <linux/mod_devicetable.h>

extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);

/*
 * Match specific microcode revisions.
 *
 * vendor/family/model/stepping must be all set.
 *
 * Only checks against the boot CPU.  When mixed-stepping configs are
 * valid for a CPU model, add a quirk for every valid stepping and
 * do the fine-tuning in the quirk handler.
 */

struct x86_cpu_desc {
	__u8	x86_family;
	__u8	x86_vendor;
	__u8	x86_model;
	__u8	x86_stepping;
	__u32	x86_microcode_rev;
};

#define INTEL_CPU_DESC(mod, step, rev) {			\
	.x86_family = 6,					\
	.x86_vendor = X86_VENDOR_INTEL,				\
	.x86_model = mod,					\
	.x86_stepping = step,					\
	.x86_microcode_rev = rev,				\
}

extern bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table);

#endif