arch/all-pc/kernel/apic.h

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Generic AROS APIC definitions.
   6     Lang: english
   7 */
   8
   9 #include <asm/cpu.h>
  10 #include <proto/acpica.h>
  11
  12 /*
  13  * Per-CPU data
  14  * Even old IntelMP spec say that we should be prepared to handle different CPUs.
  15  * This is why we have timer frequency here, not globally.
  16  */
  17 struct CPUData
  18 {
  19     ULONG timerFreq;    /* Timer clock frequency                        */
  20     UBYTE lapicID;      /* Local APIC ID                                */
  21     UBYTE sysID;        /* System (ACPI, whatever) ID, can differ       */
  22 };
  23
  24 struct APICData
  25 {
  26     IPTR           lapicBase;   /* Local APIC base address                      */
  27     IPTR           ioapicBase;  /* IOAPIC base address                          */
  28     CONST_APTR     acpi_madt;   /* ACPI MADT pointer (cached)                   */
  29     ULONG          count;       /* Total number of APICs in the system          */
  30     UWORD          flags;       /* See below                                    */
  31     struct CPUData cores[0];    /* Per-CPU data                                 */
  32 };
  33
  34 #define APF_8259 0x0001 /* Legacy PIC present                           */
  35
  36 ULONG core_APIC_Wake(APTR start_addr, UBYTE id, IPTR base);
  37 UBYTE core_APIC_GetID(IPTR base);
  38 void  core_APIC_Init(struct APICData *data, ULONG cpuNum);
  39 void  core_APIC_AckIntr(void);
  40
  41 #ifdef __x86_64__
  42 #define APIC_BASE_MASK 0x000FFFFFFFFFF000
  43 #else
  44 #define APIC_BASE_MASK 0xFFFFF000
  45 #endif
  46
  47 /* This is callable in supervisor only */
  48 static inline IPTR core_APIC_GetBase(void)
  49 {
  50     return rdmsri(0x1B) & APIC_BASE_MASK;
  51 }
  52
  53 struct APICData *acpi_APIC_Init(void);
  54 struct APICData *core_APIC_Probe(void);
  55 UBYTE core_APIC_GetNumber(struct APICData *data);