arch/all-pc/kernel/apic.h

   1 #ifndef KERNEL_APIC_H
   2 #define KERNEL_APIC_H
   3 /*
   4     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   5     $Id$
   6
   7     Desc: Generic AROS APIC definitions.
   8     Lang: english
   9 */
  10
  11 #include <asm/cpu.h>
  12
  13 #define APIC_MSI_BASE   0x7FFFFFFF
  14
  15 /*
  16  * Per-CPU data
  17  * Even old IntelMP spec say that we should be prepared to handle different CPUs.
  18  * This is why we have timer frequency here, not globally.
  19  */
  20
  21 struct CPUMMUConfig
  22 {
  23     void                        *mmu_PML4;
  24     void                        *mmu_PTE;
  25     void                        *mmu_PDP;
  26     void                        *mmu_PDE;
  27     int                         mmu_PDEPageCount;
  28     int                         mmu_PDEPageUsed;
  29 };
  30
  31 struct CPUData
  32 {
  33     ULONG                       cpu_TimerFreq;  /* Timer clock frequency                                */
  34     UQUAD                       cpu_TSCFreq;    /* Timestamp counter frequency                          */
  35     apicid_t                    cpu_LocalID;    /* Local APIC ID                                        */
  36     apicid_t                    cpu_PrivateID;  /* Sub-system private (ACPI, whatever) ID -  can differ */
  37     icintrid_t                  cpu_ICID;       /* NB - this is icintrid_t not icid_t                   */
  38     void                        *cpu_TLS;
  39     void                        *cpu_GDT;
  40     void                        *cpu_IDT;
  41     struct CPUMMUConfig         *cpu_MMU;
  42     UQUAD                       cpu_LAPICTick;
  43     UQUAD                       cpu_LastCPULoadTime;
  44     UQUAD                       cpu_SleepTime;
  45     ULONG                       cpu_Load;
  46 };
  47
  48 struct APICData
  49 {
  50     IPTR                        lapicBase;      /* Local APIC base address                              */
  51     ULONG                       apic_count;     /* Total number of APICs in the system                  */
  52     UWORD                       flags;          /* See below                                            */
  53     struct CPUData          cores[0];   /* Per-CPU data                                         */
  54 };
  55
  56 #define APF_8259                (1 << 0)        /* Legacy PIC present                                   */
  57 #define APF_TIMER               (1 << 1)        /* APIC uses its own heartbeat timer                    */
  58
  59 #ifdef __x86_64__
  60 #define APIC_BASE_MASK 0x000FFFFFFFFFF000
  61 #else
  62 #define APIC_BASE_MASK 0xFFFFF000
  63 #endif
  64
  65 struct APICCPUWake_Data
  66 {
  67     APTR        cpuw_apicstartrip;
  68     IPTR        cpuw_apicbase;
  69     apicid_t    cpuw_apicid;
  70 };
  71
  72
  73 ULONG core_APIC_Wake(APTR start_addr, apicid_t id, IPTR base);
  74 UBYTE core_APIC_GetID(IPTR base);
  75 void  core_APIC_Init(struct APICData *data, apicid_t cpuNum);
  76 void  core_APIC_AckIntr(void);
  77
  78 /* This is callable in supervisor only */
  79 static inline IPTR core_APIC_GetBase(void)
  80 {
  81     return rdmsri(0x1B) & APIC_BASE_MASK;
  82 }
  83
  84 struct APICData *core_APIC_Probe(void);
  85
  86 apicid_t core_APIC_GetNumberFromLocal(struct APICData *, apicid_t);
  87 apicid_t core_APIC_GetNumber(struct APICData *);
  88 void core_APIC_GetMask(struct APICData *, apicid_t, cpumask_t *);
  89 BOOL core_APIC_CPUInMask(apicid_t, cpumask_t *);
  90
  91 void core_SetupIDT(apicid_t, apicidt_t *);
  92 BOOL core_SetIDTGate(apicidt_t *, int, uintptr_t, BOOL);
  93 BOOL core_SetIRQGate(void *, int, uintptr_t);
  94 void core_DefaultIRETQ();
  95
  96 ULONG core_APIC_AllocMSI(ULONG);
  97 void core_APIC_RegisterMSI(void *);
  98
  99 extern struct IntrController APICInt_IntrController;
 100
 101 #endif /* !KERNEL_APIC_H */