[PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386)
[linux-2.6.git] / include / asm-i386 / mach-visws / mach_apic.h
1 #ifndef __ASM_MACH_APIC_H
2 #define __ASM_MACH_APIC_H
3
4 #include <mach_apicdef.h>
5 #include <asm/smp.h>
6
7 #define APIC_DFR_VALUE  (APIC_DFR_FLAT)
8
9 #define no_balance_irq (0)
10 #define esr_disable (0)
11
12 #define INT_DELIVERY_MODE dest_LowestPrio
13 #define INT_DEST_MODE 1     /* logical delivery broadcast to all procs */
14
15 #ifdef CONFIG_SMP
16  #define TARGET_CPUS cpu_online_map
17 #else
18  #define TARGET_CPUS cpumask_of_cpu(0)
19 #endif
20
21 #define check_apicid_used(bitmap, apicid)       physid_isset(apicid, bitmap)
22 #define check_apicid_present(bit)               physid_isset(bit, phys_cpu_present_map)
23
24 static inline int apic_id_registered(void)
25 {
26         return physid_isset(GET_APIC_ID(apic_read(APIC_ID)), phys_cpu_present_map);
27 }
28
29 /*
30  * Set up the logical destination ID.
31  *
32  * Intel recommends to set DFR, LDR and TPR before enabling
33  * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
34  * document number 292116).  So here it goes...
35  */
36 static inline void init_apic_ldr(void)
37 {
38         unsigned long val;
39
40         apic_write_around(APIC_DFR, APIC_DFR_VALUE);
41         val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
42         val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
43         apic_write_around(APIC_LDR, val);
44 }
45
46 static inline void summit_check(char *oem, char *productid) 
47 {
48 }
49
50 static inline void clustered_apic_check(void)
51 {
52 }
53
54 /* Mapping from cpu number to logical apicid */
55 static inline int cpu_to_logical_apicid(int cpu)
56 {
57         return 1 << cpu;
58 }
59
60 static inline int cpu_present_to_apicid(int mps_cpu)
61 {
62         if (mps_cpu < get_physical_broadcast())
63                 return mps_cpu;
64         else
65                 return BAD_APICID;
66 }
67
68 static inline physid_mask_t apicid_to_cpu_present(int apicid)
69 {
70         return physid_mask_of_physid(apicid);
71 }
72
73 #define WAKE_SECONDARY_VIA_INIT
74
75 static inline void setup_portio_remap(void)
76 {
77 }
78
79 static inline void enable_apic_mode(void)
80 {
81 }
82
83 static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
84 {
85         return physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map);
86 }
87
88 static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
89 {
90         return cpus_addr(cpumask)[0];
91 }
92
93 static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
94 {
95         return cpuid_apic >> index_msb;
96 }
97
98 #endif /* __ASM_MACH_APIC_H */