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