1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#ifndef _ASM_IRQ_VECTORS_H
|
|
#define _ASM_IRQ_VECTORS_H
|
|
|
|
/*
|
|
* IDT vectors usable for external interrupt sources start
|
|
* at 0x20:
|
|
*/
|
|
#define FIRST_EXTERNAL_VECTOR 0x20
|
|
|
|
#define SYSCALL_VECTOR 0x80
|
|
|
|
/*
|
|
* Vectors 0x20-0x2f are used for ISA interrupts.
|
|
*/
|
|
|
|
/*
|
|
* Special IRQ vectors used by the SMP architecture, 0xf0-0xff
|
|
*
|
|
* some of the following vectors are 'rare', they are merged
|
|
* into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
|
|
* TLB, reschedule and local APIC vectors are performance-critical.
|
|
*
|
|
* Vectors 0xf0-0xfa are free (reserved for future Linux use).
|
|
*/
|
|
#define SPURIOUS_APIC_VECTOR 0xff
|
|
#define ERROR_APIC_VECTOR 0xfe
|
|
#define INVALIDATE_TLB_VECTOR 0xfd
|
|
#define RESCHEDULE_VECTOR 0xfc
|
|
#define CALL_FUNCTION_VECTOR 0xfb
|
|
|
|
#define THERMAL_APIC_VECTOR 0xf0
|
|
/*
|
|
* Local APIC timer IRQ vector is on a different priority level,
|
|
* to work around the 'lost local interrupt if more than 2 IRQ
|
|
* sources per level' errata.
|
|
*/
|
|
#define LOCAL_TIMER_VECTOR 0xef
|
|
|
|
/*
|
|
* First APIC vector available to drivers: (vectors 0x30-0xee)
|
|
* we start at 0x31 to spread out vectors evenly between priority
|
|
* levels. (0x80 is the syscall vector)
|
|
*/
|
|
#define FIRST_DEVICE_VECTOR 0x31
|
|
#define FIRST_SYSTEM_VECTOR 0xef
|
|
|
|
#define TIMER_IRQ 0
|
|
|
|
/*
|
|
* IRQ definitions
|
|
*/
|
|
#define NR_VECTORS 256
|
|
#define NR_IRQS 224
|
|
#define NR_IRQ_VECTORS NR_IRQS
|
|
|
|
#define FPU_IRQ 13
|
|
|
|
#define FIRST_VM86_IRQ 3
|
|
#define LAST_VM86_IRQ 15
|
|
#define invalid_vm86_irq(irq) ((irq) < 3 || (irq) > 15)
|
|
|
|
#endif /* _ASM_IRQ_VECTORS_H */
|