1 #ifndef __ASM_MACH_APIC_H
2 #define __ASM_MACH_APIC_H
4 #define xapic_phys_to_log_apicid(cpu) (per_cpu(x86_bios_cpu_apicid, cpu))
6 static inline int bigsmp_apic_id_registered(void)
11 static inline const cpumask_t *bigsmp_target_cpus(void)
14 return &cpu_online_map;
16 return &cpumask_of_cpu(0);
20 #define APIC_DFR_VALUE (APIC_DFR_FLAT)
21 #define NO_BALANCE_IRQ (0)
23 static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
28 static inline unsigned long check_apicid_present(int bit)
33 static inline unsigned long calculate_ldr(int cpu)
35 unsigned long val, id;
36 val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
37 id = xapic_phys_to_log_apicid(cpu);
38 val |= SET_APIC_LOGICAL_ID(id);
43 * Set up the logical destination ID.
45 * Intel recommends to set DFR, LDR and TPR before enabling
46 * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
47 * document number 292116). So here it goes...
49 static inline void init_apic_ldr(void)
52 int cpu = smp_processor_id();
54 apic_write(APIC_DFR, APIC_DFR_VALUE);
55 val = calculate_ldr(cpu);
56 apic_write(APIC_LDR, val);
59 static inline void setup_apic_routing(void)
61 printk("Enabling APIC mode: %s. Using %d I/O APICs\n",
62 "Physflat", nr_ioapics);
65 static inline int multi_timer_check(int apic, int irq)
70 static inline int apicid_to_node(int logical_apicid)
72 return apicid_2_node[hard_smp_processor_id()];
75 static inline int cpu_present_to_apicid(int mps_cpu)
77 if (mps_cpu < nr_cpu_ids)
78 return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
83 static inline physid_mask_t apicid_to_cpu_present(int phys_apicid)
85 return physid_mask_of_physid(phys_apicid);
88 extern u8 cpu_2_logical_apicid[];
89 /* Mapping from cpu number to logical apicid */
90 static inline int cpu_to_logical_apicid(int cpu)
92 if (cpu >= nr_cpu_ids)
94 return cpu_physical_id(cpu);
97 static inline physid_mask_t ioapic_phys_id_map(physid_mask_t phys_map)
99 /* For clustered we don't have a good way to do this yet - hack */
100 return physids_promote(0xFFL);
103 static inline void setup_portio_remap(void)
107 static inline void enable_apic_mode(void)
111 static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
116 /* As we are using single CPU as destination, pick only one CPU here */
117 static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
122 cpu = first_cpu(*cpumask);
123 apicid = cpu_to_logical_apicid(cpu);
127 static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *cpumask,
128 const struct cpumask *andmask)
133 * We're using fixed IRQ delivery, can only return one phys APIC ID.
134 * May as well be the first.
136 for_each_cpu_and(cpu, cpumask, andmask)
137 if (cpumask_test_cpu(cpu, cpu_online_mask))
139 if (cpu < nr_cpu_ids)
140 return cpu_to_logical_apicid(cpu);
145 static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
147 return cpuid_apic >> index_msb;
150 #endif /* __ASM_MACH_APIC_H */