[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-x86_64 / hw_irq.h

#ifndef _ASM_HW_IRQ_H
#define _ASM_HW_IRQ_H

/*
 *	linux/include/asm/hw_irq.h
 *
 *	(C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
 *
 *	moved some of the old arch/i386/kernel/irq.h to here. VY
 *
 *	IRQ/IPI changes taken from work by Thomas Radke
 *	<tomsoft@informatik.tu-chemnitz.de>
 *
 *	hacked by Andi Kleen for x86-64.
 * 
 *  $Id: hw_irq.h,v 1.24 2001/09/14 20:55:03 vojtech Exp $
 */

#ifndef __ASSEMBLY__
#include <linux/config.h>
#include <asm/atomic.h>
#include <asm/irq.h>
#include <linux/profile.h>
#include <linux/smp.h>

struct hw_interrupt_type;
#endif

#define NMI_VECTOR		0x02
/*
 * IDT vectors usable for external interrupt sources start
 * at 0x20:
 */
#define FIRST_EXTERNAL_VECTOR	0x20

#define IA32_SYSCALL_VECTOR	0x80


/*
 * Vectors 0x20-0x2f are used for ISA interrupts.
 */

/*
 * Special IRQ vectors used by the SMP architecture, 0xf0-0xff
 *
 *  some of the following vectors are 'rare', they are merged
 *  into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
 *  TLB, reschedule and local APIC vectors are performance-critical.
 */
#define SPURIOUS_APIC_VECTOR	0xff
#define ERROR_APIC_VECTOR	0xfe
#define RESCHEDULE_VECTOR	0xfd
#define CALL_FUNCTION_VECTOR	0xfc
/* fb free - please don't readd KDB here because it's useless
   (hint - think what a NMI bit does to a vector) */
#define THERMAL_APIC_VECTOR	0xfa
#define THRESHOLD_APIC_VECTOR   0xf9
/* f8 free */
#define INVALIDATE_TLB_VECTOR_END	0xf7
#define INVALIDATE_TLB_VECTOR_START	0xf0	/* f0-f7 used for TLB flush */

#define NUM_INVALIDATE_TLB_VECTORS	8

/*
 * Local APIC timer IRQ vector is on a different priority level,
 * to work around the 'lost local interrupt if more than 2 IRQ
 * sources per level' errata.
 */
#define LOCAL_TIMER_VECTOR	0xef

/*
 * First APIC vector available to drivers: (vectors 0x30-0xee)
 * we start at 0x31 to spread out vectors evenly between priority
 * levels. (0x80 is the syscall vector)
 */
#define FIRST_DEVICE_VECTOR	0x31
#define FIRST_SYSTEM_VECTOR	0xef   /* duplicated in irq.h */


#ifndef __ASSEMBLY__
extern u8 irq_vector[NR_IRQ_VECTORS];
#define IO_APIC_VECTOR(irq)	(irq_vector[irq])
#define AUTO_ASSIGN		-1

/*
 * Various low-level irq details needed by irq.c, process.c,
 * time.c, io_apic.c and smp.c
 *
 * Interrupt entry/exit code at both C and assembly level
 */

extern void disable_8259A_irq(unsigned int irq);
extern void enable_8259A_irq(unsigned int irq);
extern int i8259A_irq_pending(unsigned int irq);
extern void make_8259A_irq(unsigned int irq);
extern void init_8259A(int aeoi);
extern void FASTCALL(send_IPI_self(int vector));
extern void init_VISWS_APIC_irqs(void);
extern void setup_IO_APIC(void);
extern void disable_IO_APIC(void);
extern void print_IO_APIC(void);
extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
extern void send_IPI(int dest, int vector);
extern void setup_ioapic_dest(void);

extern unsigned long io_apic_irqs;

extern atomic_t irq_err_count;
extern atomic_t irq_mis_count;

#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))

#define __STR(x) #x
#define STR(x) __STR(x)

#include <asm/ptrace.h>

#define IRQ_NAME2(nr) nr##_interrupt(void)
#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)

/*
 *	SMP has a few special interrupts for IPI messages
 */

#define BUILD_IRQ(nr) \
asmlinkage void IRQ_NAME(nr); \
__asm__( \
"\n.p2align\n" \
"IRQ" #nr "_interrupt:\n\t" \
	"push $" #nr "-256 ; " \
	"jmp common_interrupt");

#if defined(CONFIG_X86_IO_APIC)
static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {
	if (IO_APIC_IRQ(i))
		send_IPI_self(IO_APIC_VECTOR(i));
}
#else
static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
#endif

#define platform_legacy_irq(irq)	((irq) < 16)

#endif

#endif /* _ASM_HW_IRQ_H */
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	* hacked by Andi Kleen for x86-64.
	15	*
	16	* $Id: hw_irq.h,v 1.24 2001/09/14 20:55:03 vojtech Exp $
	17	*/
	18
	19	#ifndef __ASSEMBLY__
	20	#include <linux/config.h>
	21	#include <asm/atomic.h>
	22	#include <asm/irq.h>
	23	#include <linux/profile.h>
	24	#include <linux/smp.h>
	25
	26	struct hw_interrupt_type;
	27	#endif
	28
1a426cb7	29	#define NMI_VECTOR 0x02
1da177e4 LT	30	/*
	31	* IDT vectors usable for external interrupt sources start
	32	* at 0x20:
	33	*/
	34	#define FIRST_EXTERNAL_VECTOR 0x20
	35
	36	#define IA32_SYSCALL_VECTOR 0x80
	37
	38
	39	/*
	40	* Vectors 0x20-0x2f are used for ISA interrupts.
	41	*/
	42
	43	/*
	44	* Special IRQ vectors used by the SMP architecture, 0xf0-0xff
	45	*
	46	* some of the following vectors are 'rare', they are merged
	47	* into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
	48	* TLB, reschedule and local APIC vectors are performance-critical.
1da177e4 LT	49	*/
	50	#define SPURIOUS_APIC_VECTOR 0xff
	51	#define ERROR_APIC_VECTOR 0xfe
e5bc8b6b AK	52	#define RESCHEDULE_VECTOR 0xfd
e5bc8b6b AK	53	#define CALL_FUNCTION_VECTOR 0xfc
915f34e2 AK	54	/* fb free - please don't readd KDB here because it's useless
915f34e2 AK	55	(hint - think what a NMI bit does to a vector) */
e5bc8b6b	56	#define THERMAL_APIC_VECTOR 0xfa
89b831ef	57	#define THRESHOLD_APIC_VECTOR 0xf9
e080e9d6 JU	58	/* f8 free */
	59	#define INVALIDATE_TLB_VECTOR_END 0xf7
	60	#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f7 used for TLB flush */
1da177e4	61
e5bc8b6b	62	#define NUM_INVALIDATE_TLB_VECTORS 8
1da177e4 LT	63
	64	/*
	65	* Local APIC timer IRQ vector is on a different priority level,
	66	* to work around the 'lost local interrupt if more than 2 IRQ
	67	* sources per level' errata.
	68	*/
	69	#define LOCAL_TIMER_VECTOR 0xef
	70
	71	/*
	72	* First APIC vector available to drivers: (vectors 0x30-0xee)
	73	* we start at 0x31 to spread out vectors evenly between priority
	74	* levels. (0x80 is the syscall vector)
	75	*/
	76	#define FIRST_DEVICE_VECTOR 0x31
	77	#define FIRST_SYSTEM_VECTOR 0xef /* duplicated in irq.h */
	78
	79
	80	#ifndef __ASSEMBLY__
	81	extern u8 irq_vector[NR_IRQ_VECTORS];
	82	#define IO_APIC_VECTOR(irq) (irq_vector[irq])
	83	#define AUTO_ASSIGN -1
	84
	85	/*
	86	* Various low-level irq details needed by irq.c, process.c,
	87	* time.c, io_apic.c and smp.c
	88	*
	89	* Interrupt entry/exit code at both C and assembly level
	90	*/
	91
	92	extern void disable_8259A_irq(unsigned int irq);
	93	extern void enable_8259A_irq(unsigned int irq);
	94	extern int i8259A_irq_pending(unsigned int irq);
	95	extern void make_8259A_irq(unsigned int irq);
	96	extern void init_8259A(int aeoi);
	97	extern void FASTCALL(send_IPI_self(int vector));
	98	extern void init_VISWS_APIC_irqs(void);
	99	extern void setup_IO_APIC(void);
	100	extern void disable_IO_APIC(void);
	101	extern void print_IO_APIC(void);
	102	extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);
	103	extern void send_IPI(int dest, int vector);
	104	extern void setup_ioapic_dest(void);
	105
	106	extern unsigned long io_apic_irqs;
	107
	108	extern atomic_t irq_err_count;
	109	extern atomic_t irq_mis_count;
	110
	111	#define IO_APIC_IRQ(x) (((x) >= 16) \|\| ((1<<(x)) & io_apic_irqs))
	112
	113	#define __STR(x) #x
	114	#define STR(x) __STR(x)
	115
	116	#include <asm/ptrace.h>
	117
	118	#define IRQ_NAME2(nr) nr##_interrupt(void)
	119	#define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr)
	120
	121	/*
	122	* SMP has a few special interrupts for IPI messages
	123	*/
	124
	125	#define BUILD_IRQ(nr) \
	126	asmlinkage void IRQ_NAME(nr); \
127	__asm__( \
128	"\n.p2align\n" \
129	"IRQ" #nr "_interrupt:\n\t" \
130	"push $" #nr "-256 ; " \
131	"jmp common_interrupt");
132
133	#if defined(CONFIG_X86_IO_APIC)
134	static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {
135	if (IO_APIC_IRQ(i))
136	send_IPI_self(IO_APIC_VECTOR(i));
137	}
138	#else
139	static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
140	#endif
141
142	#define platform_legacy_irq(irq) ((irq) < 16)
143
144	#endif
145
146	#endif /* _ASM_HW_IRQ_H */