release/src-rt-6.x/linux/linux-2.6/include/asm-i386/mach-visws/irq_vectors.h

   1 #ifndef _ASM_IRQ_VECTORS_H
   2 #define _ASM_IRQ_VECTORS_H
   3
   4 /*
   5  * IDT vectors usable for external interrupt sources start
   6  * at 0x20:
   7  */
   8 #define FIRST_EXTERNAL_VECTOR   0x20
   9
  10 #define SYSCALL_VECTOR          0x80
  11
  12 /*
  13  * Vectors 0x20-0x2f are used for ISA interrupts.
  14  */
  15
  16 /*
  17  * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
  18  *
  19  *  some of the following vectors are 'rare', they are merged
  20  *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
  21  *  TLB, reschedule and local APIC vectors are performance-critical.
  22  *
  23  *  Vectors 0xf0-0xfa are free (reserved for future Linux use).
  24  */
  25 #define SPURIOUS_APIC_VECTOR    0xff
  26 #define ERROR_APIC_VECTOR       0xfe
  27 #define INVALIDATE_TLB_VECTOR   0xfd
  28 #define RESCHEDULE_VECTOR       0xfc
  29 #define CALL_FUNCTION_VECTOR    0xfb
  30
  31 #define THERMAL_APIC_VECTOR     0xf0
  32 /*
  33  * Local APIC timer IRQ vector is on a different priority level,
  34  * to work around the 'lost local interrupt if more than 2 IRQ
  35  * sources per level' errata.
  36  */
  37 #define LOCAL_TIMER_VECTOR      0xef
  38
  39 /*
  40  * First APIC vector available to drivers: (vectors 0x30-0xee)
  41  * we start at 0x31 to spread out vectors evenly between priority
  42  * levels. (0x80 is the syscall vector)
  43  */
  44 #define FIRST_DEVICE_VECTOR     0x31
  45 #define FIRST_SYSTEM_VECTOR     0xef
  46
  47 #define TIMER_IRQ 0
  48
  49 /*
  50  * IRQ definitions
  51  */
  52 #define NR_VECTORS 256
  53 #define NR_IRQS 224
  54 #define NR_IRQ_VECTORS NR_IRQS
  55
  56 #define FPU_IRQ                 13
  57
  58 #define FIRST_VM86_IRQ          3
  59 #define LAST_VM86_IRQ           15
  60 #define invalid_vm86_irq(irq)   ((irq) < 3 || (irq) > 15)
  61
  62 #endif /* _ASM_IRQ_VECTORS_H */