diff options
Diffstat (limited to 'include/asm-x86/i8259.h')
| -rw-r--r-- | include/asm-x86/i8259.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/include/asm-x86/i8259.h b/include/asm-x86/i8259.h index 29d8f9a6b3fc..67c319e0efc7 100644 --- a/include/asm-x86/i8259.h +++ b/include/asm-x86/i8259.h @@ -3,10 +3,25 @@ extern unsigned int cached_irq_mask; -#define __byte(x,y) (((unsigned char *) &(y))[x]) +#define __byte(x,y) (((unsigned char *) &(y))[x]) #define cached_master_mask (__byte(0, cached_irq_mask)) #define cached_slave_mask (__byte(1, cached_irq_mask)) +/* i8259A PIC registers */ +#define PIC_MASTER_CMD 0x20 +#define PIC_MASTER_IMR 0x21 +#define PIC_MASTER_ISR PIC_MASTER_CMD +#define PIC_MASTER_POLL PIC_MASTER_ISR +#define PIC_MASTER_OCW3 PIC_MASTER_ISR +#define PIC_SLAVE_CMD 0xa0 +#define PIC_SLAVE_IMR 0xa1 + +/* i8259A PIC related value */ +#define PIC_CASCADE_IR 2 +#define MASTER_ICW4_DEFAULT 0x01 +#define SLAVE_ICW4_DEFAULT 0x01 +#define PIC_ICW4_AEOI 2 + extern spinlock_t i8259A_lock; extern void init_8259A(int auto_eoi); @@ -14,4 +29,7 @@ extern void enable_8259A_irq(unsigned int irq); extern void disable_8259A_irq(unsigned int irq); extern unsigned int startup_8259A_irq(unsigned int irq); +#define inb_pic inb_p +#define outb_pic outb_p + #endif /* __ASM_I8259_H__ */ |