include/asm-x86/irq_vectors.h

   1 #ifndef _ASM_IRQ_VECTORS_H
   2 #define _ASM_IRQ_VECTORS_H
   3
   4 #include <linux/threads.h>
   5
   6 #define NMI_VECTOR              0x02
   7
   8 /*
   9  * IDT vectors usable for external interrupt sources start
  10  * at 0x20:
  11  */
  12 #define FIRST_EXTERNAL_VECTOR   0x20
  13
  14 #ifdef CONFIG_X86_32
  15 # define SYSCALL_VECTOR         0x80
  16 #else
  17 # define IA32_SYSCALL_VECTOR    0x80
  18 #endif
  19
  20 /*
  21  * Reserve the lowest usable priority level 0x20 - 0x2f for triggering
  22  * cleanup after irq migration on 64 bit.
  23  */
  24 #define IRQ_MOVE_CLEANUP_VECTOR FIRST_EXTERNAL_VECTOR
  25
  26 /*
  27  * Vectors 0x20-0x2f are used for ISA interrupts on 32 bit.
  28  * Vectors 0x30-0x3f are used for ISA interrupts on 64 bit.
  29  */
  30 #ifdef CONFIG_X86_32
  31 #define IRQ0_VECTOR             (FIRST_EXTERNAL_VECTOR)
  32 #else
  33 #define IRQ0_VECTOR             (FIRST_EXTERNAL_VECTOR + 0x10)
  34 #endif
  35 #define IRQ1_VECTOR             (IRQ0_VECTOR + 1)
  36 #define IRQ2_VECTOR             (IRQ0_VECTOR + 2)
  37 #define IRQ3_VECTOR             (IRQ0_VECTOR + 3)
  38 #define IRQ4_VECTOR             (IRQ0_VECTOR + 4)
  39 #define IRQ5_VECTOR             (IRQ0_VECTOR + 5)
  40 #define IRQ6_VECTOR             (IRQ0_VECTOR + 6)
  41 #define IRQ7_VECTOR             (IRQ0_VECTOR + 7)
  42 #define IRQ8_VECTOR             (IRQ0_VECTOR + 8)
  43 #define IRQ9_VECTOR             (IRQ0_VECTOR + 9)
  44 #define IRQ10_VECTOR            (IRQ0_VECTOR + 10)
  45 #define IRQ11_VECTOR            (IRQ0_VECTOR + 11)
  46 #define IRQ12_VECTOR            (IRQ0_VECTOR + 12)
  47 #define IRQ13_VECTOR            (IRQ0_VECTOR + 13)
  48 #define IRQ14_VECTOR            (IRQ0_VECTOR + 14)
  49 #define IRQ15_VECTOR            (IRQ0_VECTOR + 15)
  50
  51 /*
  52  * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
  53  *
  54  *  some of the following vectors are 'rare', they are merged
  55  *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
  56  *  TLB, reschedule and local APIC vectors are performance-critical.
  57  *
  58  *  Vectors 0xf0-0xfa are free (reserved for future Linux use).
  59  */
  60 #ifdef CONFIG_X86_32
  61
  62 # define SPURIOUS_APIC_VECTOR           0xff
  63 # define ERROR_APIC_VECTOR              0xfe
  64 # define INVALIDATE_TLB_VECTOR          0xfd
  65 # define RESCHEDULE_VECTOR              0xfc
  66 # define CALL_FUNCTION_VECTOR           0xfb
  67 # define CALL_FUNCTION_SINGLE_VECTOR    0xfa
  68 # define THERMAL_APIC_VECTOR            0xf0
  69
  70 #else
  71
  72 #define SPURIOUS_APIC_VECTOR            0xff
  73 #define ERROR_APIC_VECTOR               0xfe
  74 #define RESCHEDULE_VECTOR               0xfd
  75 #define CALL_FUNCTION_VECTOR            0xfc
  76 #define CALL_FUNCTION_SINGLE_VECTOR     0xfb
  77 #define THERMAL_APIC_VECTOR             0xfa
  78 #define THRESHOLD_APIC_VECTOR           0xf9
  79 #define INVALIDATE_TLB_VECTOR_END       0xf7
  80 #define INVALIDATE_TLB_VECTOR_START     0xf0    /* f0-f7 used for TLB flush */
  81
  82 #define NUM_INVALIDATE_TLB_VECTORS      8
  83
  84 #endif
  85
  86 /*
  87  * Local APIC timer IRQ vector is on a different priority level,
  88  * to work around the 'lost local interrupt if more than 2 IRQ
  89  * sources per level' errata.
  90  */
  91 #define LOCAL_TIMER_VECTOR      0xef
  92
  93 /*
  94  * First APIC vector available to drivers: (vectors 0x30-0xee) we
  95  * start at 0x31(0x41) to spread out vectors evenly between priority
  96  * levels. (0x80 is the syscall vector)
  97  */
  98 #ifdef CONFIG_X86_32
  99 # define FIRST_DEVICE_VECTOR    0x31
 100 #else
 101 # define FIRST_DEVICE_VECTOR    (IRQ15_VECTOR + 2)
 102 #endif
 103
 104 #define NR_VECTORS              256
 105
 106 #define FPU_IRQ                 13
 107
 108 #define FIRST_VM86_IRQ          3
 109 #define LAST_VM86_IRQ           15
 110 #define invalid_vm86_irq(irq)   ((irq) < 3 || (irq) > 15)
 111
 112 #if !defined(CONFIG_X86_VOYAGER)
 113
 114 # if defined(CONFIG_X86_IO_APIC) || defined(CONFIG_PARAVIRT) || defined(CONFIG_X86_VISWS)
 115
 116 #  define NR_IRQS               224
 117
 118 #  if (224 >= 32 * NR_CPUS)
 119 #   define NR_IRQ_VECTORS       NR_IRQS
 120 #  else
 121 #   define NR_IRQ_VECTORS       (32 * NR_CPUS)
 122 #  endif
 123
 124 # else /* IO_APIC || PARAVIRT */
 125
 126 #  define NR_IRQS               16
 127 #  define NR_IRQ_VECTORS        NR_IRQS
 128
 129 # endif
 130
 131 #else /* !VISWS && !VOYAGER */
 132
 133 # define NR_IRQS                224
 134 # define NR_IRQ_VECTORS         NR_IRQS
 135
 136 #endif /* VISWS */
 137
 138 /* Voyager specific defines */
 139 /* These define the CPIs we use in linux */
 140 #define VIC_CPI_LEVEL0                  0
 141 #define VIC_CPI_LEVEL1                  1
 142 /* now the fake CPIs */
 143 #define VIC_TIMER_CPI                   2
 144 #define VIC_INVALIDATE_CPI              3
 145 #define VIC_RESCHEDULE_CPI              4
 146 #define VIC_ENABLE_IRQ_CPI              5
 147 #define VIC_CALL_FUNCTION_CPI           6
 148 #define VIC_CALL_FUNCTION_SINGLE_CPI    7
 149
 150 /* Now the QIC CPIs:  Since we don't need the two initial levels,
 151  * these are 2 less than the VIC CPIs */
 152 #define QIC_CPI_OFFSET                  1
 153 #define QIC_TIMER_CPI                   (VIC_TIMER_CPI - QIC_CPI_OFFSET)
 154 #define QIC_INVALIDATE_CPI              (VIC_INVALIDATE_CPI - QIC_CPI_OFFSET)
 155 #define QIC_RESCHEDULE_CPI              (VIC_RESCHEDULE_CPI - QIC_CPI_OFFSET)
 156 #define QIC_ENABLE_IRQ_CPI              (VIC_ENABLE_IRQ_CPI - QIC_CPI_OFFSET)
 157 #define QIC_CALL_FUNCTION_CPI           (VIC_CALL_FUNCTION_CPI - QIC_CPI_OFFSET)
 158 #define QIC_CALL_FUNCTION_SINGLE_CPI    (VIC_CALL_FUNCTION_SINGLE_CPI - QIC_CPI_OFFSET)
 159
 160 #define VIC_START_FAKE_CPI              VIC_TIMER_CPI
 161 #define VIC_END_FAKE_CPI                VIC_CALL_FUNCTION_SINGLE_CPI
 162
 163 /* this is the SYS_INT CPI. */
 164 #define VIC_SYS_INT                     8
 165 #define VIC_CMN_INT                     15
 166
 167 /* This is the boot CPI for alternate processors.  It gets overwritten
 168  * by the above once the system has activated all available processors */
 169 #define VIC_CPU_BOOT_CPI                VIC_CPI_LEVEL0
 170 #define VIC_CPU_BOOT_ERRATA_CPI         (VIC_CPI_LEVEL0 + 8)
 171
 172
 173 #endif /* _ASM_IRQ_VECTORS_H */