1/*
 2 * Common functions shared between the various APIC flavours
 3 *
 4 * SPDX-License-Identifier: GPL-2.0
 5 */
 6#include <linux/irq.h>
 7#include <asm/apic.h>
 8
 9u32 apic_default_calc_apicid(unsigned int cpu)
10{
11	return per_cpu(x86_cpu_to_apicid, cpu);
12}
13
14u32 apic_flat_calc_apicid(unsigned int cpu)
15{
16	return 1U << cpu;
17}
18
19bool default_check_apicid_used(physid_mask_t *map, int apicid)
20{
21	return physid_isset(apicid, *map);
22}
23
24void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
25{
26	*retmap = *phys_map;
27}
28
29int default_cpu_present_to_apicid(int mps_cpu)
30{
31	if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
32		return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
33	else
34		return BAD_APICID;
35}
36EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
37
38int default_check_phys_apicid_present(int phys_apicid)
39{
40	return physid_isset(phys_apicid, phys_cpu_present_map);
41}
42
43int default_apic_id_valid(u32 apicid)
44{
45	return (apicid < 255);
46}