mach_apic.h 4.3 KB

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  1. #ifndef _ASM_X86_MACH_DEFAULT_MACH_APIC_H
  2. #define _ASM_X86_MACH_DEFAULT_MACH_APIC_H
  3. #ifdef CONFIG_X86_LOCAL_APIC
  4. #include <mach_apicdef.h>
  5. #include <asm/smp.h>
  6. #define APIC_DFR_VALUE (APIC_DFR_FLAT)
  7. static inline const struct cpumask *target_cpus(void)
  8. {
  9. #ifdef CONFIG_SMP
  10. return cpu_online_mask;
  11. #else
  12. return cpumask_of(0);
  13. #endif
  14. }
  15. #define NO_BALANCE_IRQ (0)
  16. #define esr_disable (0)
  17. #ifdef CONFIG_X86_64
  18. #include <asm/genapic.h>
  19. #define IRQ_DELIVERY_MODE (apic->irq_delivery_mode)
  20. #define IRQ_DEST_MODE (apic->irq_dest_mode)
  21. #define TARGET_CPUS (apic->target_cpus())
  22. #define init_apic_ldr (apic->init_apic_ldr)
  23. #define cpu_mask_to_apicid (apic->cpu_mask_to_apicid)
  24. #define cpu_mask_to_apicid_and (apic->cpu_mask_to_apicid_and)
  25. #define phys_pkg_id (apic->phys_pkg_id)
  26. #define vector_allocation_domain (apic->vector_allocation_domain)
  27. #define read_apic_id() (GET_APIC_ID(apic_read(APIC_ID)))
  28. #define send_IPI_self (apic->send_IPI_self)
  29. #define wakeup_secondary_cpu (apic->wakeup_cpu)
  30. extern void setup_apic_routing(void);
  31. #else
  32. #define IRQ_DELIVERY_MODE dest_LowestPrio
  33. #define IRQ_DEST_MODE 1 /* logical delivery broadcast to all procs */
  34. #define TARGET_CPUS (target_cpus())
  35. #define wakeup_secondary_cpu wakeup_secondary_cpu_via_init
  36. /*
  37. * Set up the logical destination ID.
  38. *
  39. * Intel recommends to set DFR, LDR and TPR before enabling
  40. * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
  41. * document number 292116). So here it goes...
  42. */
  43. static inline void init_apic_ldr(void)
  44. {
  45. unsigned long val;
  46. apic_write(APIC_DFR, APIC_DFR_VALUE);
  47. val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
  48. val |= SET_APIC_LOGICAL_ID(1UL << smp_processor_id());
  49. apic_write(APIC_LDR, val);
  50. }
  51. static inline int default_apic_id_registered(void)
  52. {
  53. return physid_isset(read_apic_id(), phys_cpu_present_map);
  54. }
  55. static inline unsigned int cpu_mask_to_apicid(const struct cpumask *cpumask)
  56. {
  57. return cpumask_bits(cpumask)[0];
  58. }
  59. static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *cpumask,
  60. const struct cpumask *andmask)
  61. {
  62. unsigned long mask1 = cpumask_bits(cpumask)[0];
  63. unsigned long mask2 = cpumask_bits(andmask)[0];
  64. unsigned long mask3 = cpumask_bits(cpu_online_mask)[0];
  65. return (unsigned int)(mask1 & mask2 & mask3);
  66. }
  67. static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
  68. {
  69. return cpuid_apic >> index_msb;
  70. }
  71. static inline void setup_apic_routing(void)
  72. {
  73. #ifdef CONFIG_X86_IO_APIC
  74. printk("Enabling APIC mode: %s. Using %d I/O APICs\n",
  75. "Flat", nr_ioapics);
  76. #endif
  77. }
  78. static inline int apicid_to_node(int logical_apicid)
  79. {
  80. #ifdef CONFIG_SMP
  81. return apicid_2_node[hard_smp_processor_id()];
  82. #else
  83. return 0;
  84. #endif
  85. }
  86. static inline void vector_allocation_domain(int cpu, struct cpumask *retmask)
  87. {
  88. /* Careful. Some cpus do not strictly honor the set of cpus
  89. * specified in the interrupt destination when using lowest
  90. * priority interrupt delivery mode.
  91. *
  92. * In particular there was a hyperthreading cpu observed to
  93. * deliver interrupts to the wrong hyperthread when only one
  94. * hyperthread was specified in the interrupt desitination.
  95. */
  96. *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
  97. }
  98. #endif
  99. static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
  100. {
  101. return physid_isset(apicid, bitmap);
  102. }
  103. static inline unsigned long check_apicid_present(int bit)
  104. {
  105. return physid_isset(bit, phys_cpu_present_map);
  106. }
  107. static inline physid_mask_t ioapic_phys_id_map(physid_mask_t phys_map)
  108. {
  109. return phys_map;
  110. }
  111. static inline int multi_timer_check(int apic, int irq)
  112. {
  113. return 0;
  114. }
  115. /* Mapping from cpu number to logical apicid */
  116. static inline int cpu_to_logical_apicid(int cpu)
  117. {
  118. return 1 << cpu;
  119. }
  120. static inline int cpu_present_to_apicid(int mps_cpu)
  121. {
  122. if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
  123. return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
  124. else
  125. return BAD_APICID;
  126. }
  127. static inline physid_mask_t apicid_to_cpu_present(int phys_apicid)
  128. {
  129. return physid_mask_of_physid(phys_apicid);
  130. }
  131. static inline void setup_portio_remap(void)
  132. {
  133. }
  134. static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
  135. {
  136. return physid_isset(boot_cpu_physical_apicid, phys_cpu_present_map);
  137. }
  138. static inline void enable_apic_mode(void)
  139. {
  140. }
  141. #endif /* CONFIG_X86_LOCAL_APIC */
  142. #endif /* _ASM_X86_MACH_DEFAULT_MACH_APIC_H */