arch/x86/include/asm/mach-default/mach_apic.h

   1 #ifndef _ASM_X86_MACH_DEFAULT_MACH_APIC_H
   2 #define _ASM_X86_MACH_DEFAULT_MACH_APIC_H
   3
   4 #ifdef CONFIG_X86_LOCAL_APIC
   5
   6 #include <asm/smp.h>
   7
   8 #define APIC_DFR_VALUE  (APIC_DFR_FLAT)
   9
  10 static inline const struct cpumask *default_target_cpus(void)
  11 {
  12 #ifdef CONFIG_SMP
  13         return cpu_online_mask;
  14 #else
  15         return cpumask_of(0);
  16 #endif
  17 }
  18
  19 #ifdef CONFIG_X86_64
  20 #include <asm/genapic.h>
  21 #define read_apic_id()  (apic->get_apic_id(apic_read(APIC_ID)))
  22 extern void default_setup_apic_routing(void);
  23 #else
  24 /*
  25  * Set up the logical destination ID.
  26  *
  27  * Intel recommends to set DFR, LDR and TPR before enabling
  28  * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
  29  * document number 292116).  So here it goes...
  30  */
  31 static inline void default_init_apic_ldr(void)
  32 {
  33         unsigned long val;
  34
  35         apic_write(APIC_DFR, APIC_DFR_VALUE);
  36         val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
  37         val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
  38         apic_write(APIC_LDR, val);
  39 }
  40
  41 static inline int default_apic_id_registered(void)
  42 {
  43         return physid_isset(read_apic_id(), phys_cpu_present_map);
  44 }
  45
  46 static inline unsigned int
  47 default_cpu_mask_to_apicid(const struct cpumask *cpumask)
  48 {
  49         return cpumask_bits(cpumask)[0];
  50 }
  51
  52 static inline unsigned int
  53 default_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
  54                                const struct cpumask *andmask)
  55 {
  56         unsigned long mask1 = cpumask_bits(cpumask)[0];
  57         unsigned long mask2 = cpumask_bits(andmask)[0];
  58         unsigned long mask3 = cpumask_bits(cpu_online_mask)[0];
  59
  60         return (unsigned int)(mask1 & mask2 & mask3);
  61 }
  62
  63 static inline int default_phys_pkg_id(int cpuid_apic, int index_msb)
  64 {
  65         return cpuid_apic >> index_msb;
  66 }
  67
  68 static inline void default_setup_apic_routing(void)
  69 {
  70 #ifdef CONFIG_X86_IO_APIC
  71         printk("Enabling APIC mode:  %s.  Using %d I/O APICs\n",
  72                                         "Flat", nr_ioapics);
  73 #endif
  74 }
  75
  76 static inline int default_apicid_to_node(int logical_apicid)
  77 {
  78 #ifdef CONFIG_SMP
  79         return apicid_2_node[hard_smp_processor_id()];
  80 #else
  81         return 0;
  82 #endif
  83 }
  84
  85 #endif
  86
  87 static inline unsigned long default_check_apicid_used(physid_mask_t bitmap, int apicid)
  88 {
  89         return physid_isset(apicid, bitmap);
  90 }
  91
  92 static inline unsigned long default_check_apicid_present(int bit)
  93 {
  94         return physid_isset(bit, phys_cpu_present_map);
  95 }
  96
  97 static inline physid_mask_t default_ioapic_phys_id_map(physid_mask_t phys_map)
  98 {
  99         return phys_map;
 100 }
 101
 102 /* Mapping from cpu number to logical apicid */
 103 static inline int default_cpu_to_logical_apicid(int cpu)
 104 {
 105         return 1 << cpu;
 106 }
 107
 108 static inline int __default_cpu_present_to_apicid(int mps_cpu)
 109 {
 110         if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
 111                 return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
 112         else
 113                 return BAD_APICID;
 114 }
 115
 116 static inline int
 117 __default_check_phys_apicid_present(int boot_cpu_physical_apicid)
 118 {
 119         return physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map);
 120 }
 121
 122 #ifdef CONFIG_X86_32
 123 static inline int default_cpu_present_to_apicid(int mps_cpu)
 124 {
 125         return __default_cpu_present_to_apicid(mps_cpu);
 126 }
 127
 128 static inline int
 129 default_check_phys_apicid_present(int boot_cpu_physical_apicid)
 130 {
 131         return __default_check_phys_apicid_present(boot_cpu_physical_apicid);
 132 }
 133 #else
 134 extern int default_cpu_present_to_apicid(int mps_cpu);
 135 extern int default_check_phys_apicid_present(int boot_cpu_physical_apicid);
 136 #endif
 137
 138 static inline physid_mask_t default_apicid_to_cpu_present(int phys_apicid)
 139 {
 140         return physid_mask_of_physid(phys_apicid);
 141 }
 142
 143 #endif /* CONFIG_X86_LOCAL_APIC */
 144 #endif /* _ASM_X86_MACH_DEFAULT_MACH_APIC_H */