diff options
Diffstat (limited to 'include/asm-x86/mach-visws/irq_vectors.h')
| -rw-r--r-- | include/asm-x86/mach-visws/irq_vectors.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/asm-x86/mach-visws/irq_vectors.h b/include/asm-x86/mach-visws/irq_vectors.h new file mode 100644 index 00000000000..cb572d8db50 --- /dev/null +++ b/include/asm-x86/mach-visws/irq_vectors.h @@ -0,0 +1,62 @@ +#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 */ |