minix/kernel/arch/i386/apic.h

   1 #ifndef __APIC_H__
   2 #define __APIC_H__
   3
   4 #define APIC_ENABLE             0x100
   5 #define APIC_FOCUS_DISABLED     (1 << 9)
   6 #define APIC_SIV                0xFF
   7
   8 #define APIC_TDCR_2     0x00
   9 #define APIC_TDCR_4     0x01
  10 #define APIC_TDCR_8     0x02
  11 #define APIC_TDCR_16    0x03
  12 #define APIC_TDCR_32    0x08
  13 #define APIC_TDCR_64    0x09
  14 #define APIC_TDCR_128   0x0a
  15 #define APIC_TDCR_1     0x0b
  16
  17 #define APIC_LVTT_VECTOR_MASK   0x000000FF
  18 #define APIC_LVTT_DS_PENDING    (1 << 12)
  19 #define APIC_LVTT_MASK          (1 << 16)
  20 #define APIC_LVTT_TM            (1 << 17)
  21
  22 #define APIC_LVT_IIPP_MASK      0x00002000
  23 #define APIC_LVT_IIPP_AH        0x00002000
  24 #define APIC_LVT_IIPP_AL        0x00000000
  25
  26 #define IOAPIC_REGSEL           0x0
  27 #define IOAPIC_RW               0x10
  28
  29 #define APIC_ICR_DM_MASK                0x00000700
  30 #define APIC_ICR_VECTOR                 APIC_LVTT_VECTOR_MASK
  31 #define APIC_ICR_DM_FIXED               (0 << 8)
  32 #define APIC_ICR_DM_LOWEST_PRIORITY     (1 << 8)
  33 #define APIC_ICR_DM_SMI                 (2 << 8)
  34 #define APIC_ICR_DM_RESERVED            (3 << 8)
  35 #define APIC_ICR_DM_NMI                 (4 << 8)
  36 #define APIC_ICR_DM_INIT                (5 << 8)
  37 #define APIC_ICR_DM_STARTUP             (6 << 8)
  38 #define APIC_ICR_DM_EXTINT              (7 << 8)
  39
  40 #define APIC_ICR_DM_PHYSICAL            (0 << 11)
  41 #define APIC_ICR_DM_LOGICAL             (1 << 11)
  42
  43 #define APIC_ICR_DELIVERY_PENDING       (1 << 12)
  44
  45 #define APIC_ICR_INT_POLARITY           (1 << 13)
  46
  47 #define APIC_ICR_LEVEL_ASSERT           (1 << 14)
  48 #define APIC_ICR_LEVEL_DEASSERT         (0 << 14)
  49
  50 #define APIC_ICR_TRIGGER                (1 << 15)
  51
  52 #define APIC_ICR_INT_MASK               (1 << 16)
  53
  54 #define APIC_ICR_DEST_FIELD             (0 << 18)
  55 #define APIC_ICR_DEST_SELF              (1 << 18)
  56 #define APIC_ICR_DEST_ALL               (2 << 18)
  57 #define APIC_ICR_DEST_ALL_BUT_SELF      (3 << 18)
  58
  59 #define LOCAL_APIC_DEF_ADDR     0xfee00000 /* default local apic address */
  60 #define IO_APIC_DEF_ADDR        0xfec00000 /* default i/o apic address */
  61
  62 #define LAPIC_ID        (lapic_addr + 0x020)
  63 #define LAPIC_VERSION   (lapic_addr + 0x030)
  64 #define LAPIC_TPR       (lapic_addr + 0x080)
  65 #define LAPIC_EOI       (lapic_addr + 0x0b0)
  66 #define LAPIC_LDR       (lapic_addr + 0x0d0)
  67 #define LAPIC_DFR       (lapic_addr + 0x0e0)
  68 #define LAPIC_SIVR      (lapic_addr + 0x0f0)
  69 #define LAPIC_ISR       (lapic_addr + 0x100)
  70 #define LAPIC_TMR       (lapic_addr + 0x180)
  71 #define LAPIC_IRR       (lapic_addr + 0x200)
  72 #define LAPIC_ESR       (lapic_addr + 0x280)
  73 #define LAPIC_ICR1      (lapic_addr + 0x300)
  74 #define LAPIC_ICR2      (lapic_addr + 0x310)
  75 #define LAPIC_LVTTR     (lapic_addr + 0x320)
  76 #define LAPIC_LVTTMR    (lapic_addr + 0x330)
  77 #define LAPIC_LVTPCR    (lapic_addr + 0x340)
  78 #define LAPIC_LINT0     (lapic_addr + 0x350)
  79 #define LAPIC_LINT1     (lapic_addr + 0x360)
  80 #define LAPIC_LVTER     (lapic_addr + 0x370)
  81 #define LAPIC_TIMER_ICR (lapic_addr + 0x380)
  82 #define LAPIC_TIMER_CCR (lapic_addr + 0x390)
  83 #define LAPIC_TIMER_DCR (lapic_addr + 0x3e0)
  84
  85 #define IOAPIC_ID                       0x0
  86 #define IOAPIC_VERSION                  0x1
  87 #define IOAPIC_ARB                      0x2
  88 #define IOAPIC_REDIR_TABLE              0x10
  89
  90 #define APIC_TIMER_INT_VECTOR           0xf0
  91 #define APIC_SMP_SCHED_PROC_VECTOR      0xf1
  92 #define APIC_SMP_CPU_HALT_VECTOR        0xf2
  93 #define APIC_ERROR_INT_VECTOR           0xfe
  94 #define APIC_SPURIOUS_INT_VECTOR        0xff
  95
  96 #ifndef __ASSEMBLY__
  97
  98 #include "kernel/kernel.h"
  99
 100 EXTERN vir_bytes lapic_addr;
 101 EXTERN vir_bytes lapic_eoi_addr;
 102 EXTERN int ioapic_enabled;
 103 EXTERN int bsp_lapic_id;
 104
 105 #define MAX_NR_IOAPICS          32
 106 #define MAX_IOAPIC_IRQS         64
 107
 108 EXTERN int ioapic_enabled;
 109
 110 struct io_apic {
 111         unsigned        id;
 112         vir_bytes       addr; /* presently used address */
 113         phys_bytes      paddr; /* where is it in phys space */
 114         vir_bytes       vaddr; /* address after paging is on */
 115         unsigned        pins;
 116         unsigned        gsi_base;
 117 };
 118
 119 EXTERN struct io_apic io_apic[MAX_NR_IOAPICS];
 120 EXTERN unsigned nioapics;
 121
 122 EXTERN u32_t lapic_addr_vaddr; /* we remember the virtual address here until we
 123                                   switch to paging */
 124
 125 int lapic_enable(unsigned cpu);
 126 void ioapic_unmask_irq(unsigned irq);
 127 void ioapic_mask_irq(unsigned irq);
 128 void ioapic_reset_pic(void);
 129
 130 EXTERN int ioapic_enabled;
 131 EXTERN unsigned nioapics;
 132
 133 void lapic_microsec_sleep(unsigned count);
 134 void ioapic_disable_irqs(u32_t irqs);
 135 void ioapic_enable_irqs(u32_t irqs);
 136
 137 int lapic_enable(unsigned cpu);
 138 void lapic_disable(void);
 139
 140 void ioapic_disable_all(void);
 141 int ioapic_enable_all(void);
 142
 143 int detect_ioapics(void);
 144 void apic_idt_init(int reset);
 145
 146 #ifdef CONFIG_SMP
 147 int apic_send_startup_ipi(unsigned cpu, phys_bytes trampoline);
 148 int apic_send_init_ipi(unsigned cpu, phys_bytes trampoline);
 149 unsigned int apicid(void);
 150 void ioapic_set_id(u32_t addr, unsigned int id);
 151 #else
 152 int apic_single_cpu_init(void);
 153 #endif
 154
 155 void lapic_set_timer_periodic(const unsigned freq);
 156 void lapic_set_timer_one_shot(const u32_t value);
 157 void lapic_stop_timer(void);
 158 void lapic_restart_timer(void);
 159
 160 void ioapic_set_irq(unsigned irq);
 161 void ioapic_unset_irq(unsigned irq);
 162
 163 /* signal the end of interrupt handler to apic */
 164 #define apic_eoi() do { *((volatile u32_t *) lapic_eoi_addr) = 0; } while(0)
 165
 166 void ioapic_eoi(int irq);
 167
 168 void dump_apic_irq_state(void);
 169
 170 void apic_send_ipi(unsigned vector, unsigned cpu, int type);
 171
 172 void apic_ipi_sched_intr(void);
 173 void apic_ipi_halt_intr(void);
 174
 175 #define APIC_IPI_DEST                   0
 176 #define APIC_IPI_SELF                   1
 177 #define APIC_IPI_TO_ALL                 2
 178 #define APIC_IPI_TO_ALL_BUT_SELF        3
 179
 180 #define apic_send_ipi_single(vector,cpu) \
 181         apic_send_ipi(vector, cpu, APIC_IPI_DEST);
 182 #define apic_send_ipi_self(vector) \
 183         apic_send_ipi(vector, 0, APIC_IPI_SELF)
 184 #define apic_send_ipi_all(vector) \
 185         apic_send_ipi (vector, 0, APIC_IPI_TO_ALL)
 186 #define apic_send_ipi_allbutself(vector) \
 187         apic_send_ipi (vector, 0, APIC_IPI_TO_ALL_BUT_SELF);
 188
 189
 190 #include <minix/cpufeature.h>
 191
 192 #define cpu_feature_apic_on_chip() _cpufeature(_CPUF_I386_APIC_ON_CHIP)
 193
 194 #define lapic_read(what)        (*((volatile u32_t *)((what))))
 195 #define lapic_write(what, data) do {                    \
 196         (*((volatile u32_t *)((what)))) = data;         \
 197 } while(0)
 198
 199 #endif /* __ASSEMBLY__ */
 200
 201 #endif /* __APIC_H__ */