嵌入式Linux

开发平台：

Unix_Linux

iosapic.h：源码内容

							#ifndef __ASM_IA64_IOSAPIC_H
#define __ASM_IA64_IOSAPIC_H
#define	IOSAPIC_DEFAULT_ADDR	0xFEC00000
#define	IOSAPIC_REG_SELECT	0x0
#define	IOSAPIC_WINDOW		0x10
#define	IOSAPIC_EOI		0x40
#define	IOSAPIC_VERSION	0x1
/*
 * Redirection table entry
 */
#define	IOSAPIC_RTE_LOW(i)	(0x10+i*2)
#define	IOSAPIC_RTE_HIGH(i)	(0x11+i*2)
#define	IOSAPIC_DEST_SHIFT		16
/*
 * Delivery mode
 */
#define	IOSAPIC_DELIVERY_SHIFT		8
#define	IOSAPIC_FIXED			0x0
#define	IOSAPIC_LOWEST_PRIORITY	0x1
#define	IOSAPIC_PMI			0x2
#define	IOSAPIC_NMI			0x4
#define	IOSAPIC_INIT			0x5
#define	IOSAPIC_EXTINT			0x7
/*
 * Interrupt polarity
 */
#define	IOSAPIC_POLARITY_SHIFT		13
#define	IOSAPIC_POL_HIGH		0
#define	IOSAPIC_POL_LOW		1
/*
 * Trigger mode
 */
#define	IOSAPIC_TRIGGER_SHIFT		15
#define	IOSAPIC_EDGE			0
#define	IOSAPIC_LEVEL			1
/*
 * Mask bit
 */
#define	IOSAPIC_MASK_SHIFT		16
#define	IOSAPIC_UNMASK			0
#define	IOSAPIC_MSAK			1
#ifndef __ASSEMBLY__
extern void __init iosapic_init (unsigned long address, unsigned int base_irq,
                                 int pcat_compat);
extern int iosapic_register_irq (u32 global_vector, unsigned long polarity,
                                 unsigned long edge_triggered, u32 base_irq,
                                 char *iosapic_address);
extern void iosapic_register_legacy_irq (unsigned long irq, unsigned long pin,
					 unsigned long polarity, unsigned long trigger);
extern int iosapic_register_platform_irq (u32 int_type, u32 global_vector, u32 iosapic_vector,
					  u16 eid, u16 id, unsigned long polarity,
					  unsigned long edge_triggered, u32 base_irq,
					  char *iosapic_address);
extern unsigned int iosapic_version (char *addr);
extern void iosapic_pci_fixup (int);
# endif /* !__ASSEMBLY__ */
#endif /* __ASM_IA64_IOSAPIC_H */

						