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 
apic_default_calc_apicid(unsigned int cpu)9 u32 apic_default_calc_apicid(unsigned int cpu)
10 {
11 	return per_cpu(x86_cpu_to_apicid, cpu);
12 }
13 
apic_flat_calc_apicid(unsigned int cpu)14 u32 apic_flat_calc_apicid(unsigned int cpu)
15 {
16 	return 1U << cpu;
17 }
18 
default_check_apicid_used(physid_mask_t * map,int apicid)19 bool default_check_apicid_used(physid_mask_t *map, int apicid)
20 {
21 	return physid_isset(apicid, *map);
22 }
23 
default_ioapic_phys_id_map(physid_mask_t * phys_map,physid_mask_t * retmap)24 void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
25 {
26 	*retmap = *phys_map;
27 }
28 
default_cpu_present_to_apicid(int mps_cpu)29 int 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 }
36 EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
37 
default_check_phys_apicid_present(int phys_apicid)38 int default_check_phys_apicid_present(int phys_apicid)
39 {
40 	return physid_isset(phys_apicid, phys_cpu_present_map);
41 }
42 
default_apic_id_valid(u32 apicid)43 int default_apic_id_valid(u32 apicid)
44 {
45 	return (apicid < 255);
46 }
47