projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASM_HW_IRQ_H |
| 2 | #define _ASM_HW_IRQ_H | |
| 3 | ||
| 4 | /* | |
| 5 | * linux/include/asm/hw_irq.h | |
| 6 | * | |
| 7 | * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar | |
| 8 | * | |
| 9 | * moved some of the old arch/i386/kernel/irq.h to here. VY | |
| 10 | * | |
| 11 | * IRQ/IPI changes taken from work by Thomas Radke | |
| 12 | * <tomsoft@informatik.tu-chemnitz.de> | |
| 13 | */ | |
| 14 | ||
| 15 | #include <linux/config.h> | |
| 16 | #include <linux/profile.h> | |
| 17 | #include <asm/atomic.h> | |
| 18 | #include <asm/irq.h> | |
| 19 | #include <asm/sections.h> | |
| 20 | ||
| 21 | /* | |
| 22 | * Various low-level irq details needed by irq.c, process.c, | |
| 23 | * time.c, io_apic.c and smp.c | |
| 24 | * | |
| 25 | * Interrupt entry/exit code at both C and assembly level | |
| 26 | */ | |
| 27 | ||
| 28 | extern u8 irq_vector[NR_IRQ_VECTORS]; | |
| 29 | #define IO_APIC_VECTOR(irq) (irq_vector[irq]) | |
| 30 | #define AUTO_ASSIGN -1 | |
| 31 | ||
| 32 | extern void (*interrupt[NR_IRQS])(void); | |
| 33 | ||
| 34 | #ifdef CONFIG_SMP | |
| 35 | fastcall void reschedule_interrupt(void); | |
| 36 | fastcall void invalidate_interrupt(void); | |
| 37 | fastcall void call_function_interrupt(void); | |
| 38 | #endif | |
| 39 | ||
| 40 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 41 | fastcall void apic_timer_interrupt(void); | |
| 42 | fastcall void error_interrupt(void); | |
| 43 | fastcall void spurious_interrupt(void); | |
| 44 | fastcall void thermal_interrupt(struct pt_regs *); | |
| 45 | #define platform_legacy_irq(irq) ((irq) < 16) | |
| 46 | #endif | |
| 47 | ||
| 48 | void disable_8259A_irq(unsigned int irq); | |
| 49 | void enable_8259A_irq(unsigned int irq); | |
| 50 | int i8259A_irq_pending(unsigned int irq); | |
| 51 | void make_8259A_irq(unsigned int irq); | |
| 52 | void init_8259A(int aeoi); | |
| 53 | void FASTCALL(send_IPI_self(int vector)); | |
| 54 | void init_VISWS_APIC_irqs(void); | |
| 55 | void setup_IO_APIC(void); | |
| 56 | void disable_IO_APIC(void); | |
| 57 | void print_IO_APIC(void); | |
| 58 | int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn); | |
| 59 | void send_IPI(int dest, int vector); | |
| 60 | void setup_ioapic_dest(void); | |
| 61 | ||
| 62 | extern unsigned long io_apic_irqs; | |
| 63 | ||
| 64 | extern atomic_t irq_err_count; | |
| 65 | extern atomic_t irq_mis_count; | |
| 66 | ||
| 67 | #define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs)) | |
| 68 | ||
| 69 | #if defined(CONFIG_X86_IO_APIC) | |
| 70 | static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) | |
| 71 | { | |
| 72 | if (IO_APIC_IRQ(i)) | |
| 73 | send_IPI_self(IO_APIC_VECTOR(i)); | |
| 74 | } | |
| 75 | #else | |
| 76 | static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {} | |
| 77 | #endif | |
| 78 | ||
| 79 | #endif /* _ASM_HW_IRQ_H */ |