x2apic.h 1.2 KB

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  1. /*
  2. * Common bits for X2APIC cluster/physical modes.
  3. */
  4. #ifndef _ASM_X86_X2APIC_H
  5. #define _ASM_X86_X2APIC_H
  6. #include <asm/apic.h>
  7. #include <asm/ipi.h>
  8. #include <linux/cpumask.h>
  9. /*
  10. * Need to use more than cpu 0, because we need more vectors
  11. * when MSI-X are used.
  12. */
  13. static const struct cpumask *x2apic_target_cpus(void)
  14. {
  15. return cpu_online_mask;
  16. }
  17. static int x2apic_apic_id_valid(int apicid)
  18. {
  19. return 1;
  20. }
  21. static int x2apic_apic_id_registered(void)
  22. {
  23. return 1;
  24. }
  25. /*
  26. * For now each logical cpu is in its own vector allocation domain.
  27. */
  28. static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
  29. {
  30. cpumask_clear(retmask);
  31. cpumask_set_cpu(cpu, retmask);
  32. }
  33. static void
  34. __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest)
  35. {
  36. unsigned long cfg = __prepare_ICR(0, vector, dest);
  37. native_x2apic_icr_write(cfg, apicid);
  38. }
  39. static unsigned int x2apic_get_apic_id(unsigned long id)
  40. {
  41. return id;
  42. }
  43. static unsigned long x2apic_set_apic_id(unsigned int id)
  44. {
  45. return id;
  46. }
  47. static int x2apic_phys_pkg_id(int initial_apicid, int index_msb)
  48. {
  49. return initial_apicid >> index_msb;
  50. }
  51. static void x2apic_send_IPI_self(int vector)
  52. {
  53. apic_write(APIC_SELF_IPI, vector);
  54. }
  55. #endif /* _ASM_X86_X2APIC_H */