1#ifndef __ASM_IA64_IOSAPIC_H
  2#define __ASM_IA64_IOSAPIC_H
  3
  4#define	IOSAPIC_REG_SELECT	0x0
  5#define	IOSAPIC_WINDOW		0x10
  6#define	IOSAPIC_EOI		0x40
  7
  8#define	IOSAPIC_VERSION		0x1
  9
 10/*
 11 * Redirection table entry
 12 */
 13#define	IOSAPIC_RTE_LOW(i)	(0x10+i*2)
 14#define	IOSAPIC_RTE_HIGH(i)	(0x11+i*2)
 15
 16#define	IOSAPIC_DEST_SHIFT		16
 17
 18/*
 19 * Delivery mode
 20 */
 21#define	IOSAPIC_DELIVERY_SHIFT		8
 22#define	IOSAPIC_FIXED			0x0
 23#define	IOSAPIC_LOWEST_PRIORITY	0x1
 24#define	IOSAPIC_PMI			0x2
 25#define	IOSAPIC_NMI			0x4
 26#define	IOSAPIC_INIT			0x5
 27#define	IOSAPIC_EXTINT			0x7
 28
 29/*
 30 * Interrupt polarity
 31 */
 32#define	IOSAPIC_POLARITY_SHIFT		13
 33#define	IOSAPIC_POL_HIGH		0
 34#define	IOSAPIC_POL_LOW		1
 35
 36/*
 37 * Trigger mode
 38 */
 39#define	IOSAPIC_TRIGGER_SHIFT		15
 40#define	IOSAPIC_EDGE			0
 41#define	IOSAPIC_LEVEL			1
 42
 43/*
 44 * Mask bit
 45 */
 46
 47#define	IOSAPIC_MASK_SHIFT		16
 48#define	IOSAPIC_MASK			(1<<IOSAPIC_MASK_SHIFT)
 49
 50#define IOSAPIC_VECTOR_MASK		0xffffff00
 51
 52#ifndef __ASSEMBLY__
 53
 54#ifdef CONFIG_IOSAPIC
 55
 56#define NR_IOSAPICS			256
 57
 58#define iosapic_pcat_compat_init	ia64_native_iosapic_pcat_compat_init
 59#define __iosapic_read			__ia64_native_iosapic_read
 60#define __iosapic_write			__ia64_native_iosapic_write
 61#define iosapic_get_irq_chip		ia64_native_iosapic_get_irq_chip
 62
 63extern void __init ia64_native_iosapic_pcat_compat_init(void);
 64extern struct irq_chip *ia64_native_iosapic_get_irq_chip(unsigned long trigger);
 65
 66static inline unsigned int
 67__ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg)
 68{
 69	writel(reg, iosapic + IOSAPIC_REG_SELECT);
 70	return readl(iosapic + IOSAPIC_WINDOW);
 71}
 72
 73static inline void
 74__ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
 75{
 76	writel(reg, iosapic + IOSAPIC_REG_SELECT);
 77	writel(val, iosapic + IOSAPIC_WINDOW);
 78}
 79
 80static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
 81{
 82	writel(vector, iosapic + IOSAPIC_EOI);
 83}
 84
 85extern void __init iosapic_system_init (int pcat_compat);
 86extern int iosapic_init (unsigned long address, unsigned int gsi_base);
 87extern int iosapic_remove (unsigned int gsi_base);
 88extern int gsi_to_irq (unsigned int gsi);
 89extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
 90				  unsigned long trigger);
 91extern void iosapic_unregister_intr (unsigned int irq);
 92extern void iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
 93				      unsigned long polarity,
 94				      unsigned long trigger);
 95extern int __init iosapic_register_platform_intr (u32 int_type,
 96					   unsigned int gsi,
 97					   int pmi_vector,
 98					   u16 eid, u16 id,
 99					   unsigned long polarity,
100					   unsigned long trigger);
101
102#ifdef CONFIG_NUMA
103extern void map_iosapic_to_node (unsigned int, int);
104#endif
105#else
106#define iosapic_system_init(pcat_compat)			do { } while (0)
107#define iosapic_init(address,gsi_base)				(-EINVAL)
108#define iosapic_remove(gsi_base)				(-ENODEV)
109#define iosapic_register_intr(gsi,polarity,trigger)		(gsi)
110#define iosapic_unregister_intr(irq)				do { } while (0)
111#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)	do { } while (0)
112#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
113	polarity,trigger)					(gsi)
114#endif
115
116# endif /* !__ASSEMBLY__ */
117#endif /* __ASM_IA64_IOSAPIC_H */