Startseite Erkunden Hilfe
Registrieren Anmelden
phyus
/
linux-vybrid_public
8
0
Fork 0
Dateien Issues 0 Pull-Requests 0 Wiki
Struktur: 5619d823bc
Branches Tags
linux-vybrid_pu...
/
include
/
asm-x86
/
i8259.h

i8259.h 961 B
Verlauf Originalformat

1234567891011121314151617181920212223242526272829303132333435 
  1. #ifndef __ASM_I8259_H__
    2. 

  2. #define __ASM_I8259_H__
    3. 

  3. 

  4. extern unsigned int cached_irq_mask;
    5. 

  5. 

  6. #define __byte(x,y)		(((unsigned char *) &(y))[x])
    7. 

  7. #define cached_master_mask	(__byte(0, cached_irq_mask))
    8. 

  8. #define cached_slave_mask	(__byte(1, cached_irq_mask))
    9. 

  9. 

  10. /* i8259A PIC registers */
    11. 

  11. #define PIC_MASTER_CMD		0x20
    12. 

  12. #define PIC_MASTER_IMR		0x21
    13. 

  13. #define PIC_MASTER_ISR		PIC_MASTER_CMD
    14. 

  14. #define PIC_MASTER_POLL		PIC_MASTER_ISR
    15. 

  15. #define PIC_MASTER_OCW3		PIC_MASTER_ISR
    16. 

  16. #define PIC_SLAVE_CMD		0xa0
    17. 

  17. #define PIC_SLAVE_IMR		0xa1
    18. 

  18. 

  19. /* i8259A PIC related value */
    20. 

  20. #define PIC_CASCADE_IR		2
    21. 

  21. #define MASTER_ICW4_DEFAULT	0x01
    22. 

  22. #define SLAVE_ICW4_DEFAULT	0x01
    23. 

  23. #define PIC_ICW4_AEOI		2
    24. 

  24. 

  25. extern spinlock_t i8259A_lock;
    26. 

  26. 

  27. extern void init_8259A(int auto_eoi);
    28. 

  28. extern void enable_8259A_irq(unsigned int irq);
    29. 

  29. extern void disable_8259A_irq(unsigned int irq);
    30. 

  30. extern unsigned int startup_8259A_irq(unsigned int irq);
    31. 

  31. 

  32. #define inb_pic		inb_p
    33. 

  33. #define outb_pic	outb_p
    34. 

  34. 

  35. #endif	/* __ASM_I8259_H__ */
    36.