1/* $Id: irq.h,v 1.1.1.1 2007/08/03 18:53:36 Exp $
2 * irq.h: IRQ registers on the 64-bit Sparc.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
6 */
7
8#ifndef _SPARC64_IRQ_H
9#define _SPARC64_IRQ_H
10
11#include <linux/linkage.h>
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/interrupt.h>
15#include <asm/pil.h>
16#include <asm/ptrace.h>
17
18/* IMAP/ICLR register defines */
19#define IMAP_VALID		0x80000000	/* IRQ Enabled		*/
20#define IMAP_TID_UPA		0x7c000000	/* UPA TargetID		*/
21#define IMAP_TID_JBUS		0x7c000000	/* JBUS TargetID	*/
22#define IMAP_TID_SHIFT		26
23#define IMAP_AID_SAFARI		0x7c000000	/* Safari AgentID	*/
24#define IMAP_AID_SHIFT		26
25#define IMAP_NID_SAFARI		0x03e00000	/* Safari NodeID	*/
26#define IMAP_NID_SHIFT		21
27#define IMAP_IGN		0x000007c0	/* IRQ Group Number	*/
28#define IMAP_INO		0x0000003f	/* IRQ Number		*/
29#define IMAP_INR		0x000007ff	/* Full interrupt number*/
30
31#define ICLR_IDLE		0x00000000	/* Idle state		*/
32#define ICLR_TRANSMIT		0x00000001	/* Transmit state	*/
33#define ICLR_PENDING		0x00000003	/* Pending state	*/
34
35/* The largest number of unique interrupt sources we support.
36 * If this needs to ever be larger than 255, you need to change
37 * the type of ino_bucket->virt_irq as appropriate.
38 *
39 * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
40 */
41#define NR_IRQS    255
42
43extern void irq_install_pre_handler(int virt_irq,
44				    void (*func)(unsigned int, void *, void *),
45				    void *arg1, void *arg2);
46#define irq_canonicalize(irq)	(irq)
47extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
48extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
49extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
50extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
51				    unsigned int msi_devino_start,
52				    unsigned int msi_devino_end);
53extern void sun4v_destroy_msi(unsigned int virt_irq);
54extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
55
56static __inline__ void set_softint(unsigned long bits)
57{
58	__asm__ __volatile__("wr	%0, 0x0, %%set_softint"
59			     : /* No outputs */
60			     : "r" (bits));
61}
62
63static __inline__ void clear_softint(unsigned long bits)
64{
65	__asm__ __volatile__("wr	%0, 0x0, %%clear_softint"
66			     : /* No outputs */
67			     : "r" (bits));
68}
69
70static __inline__ unsigned long get_softint(void)
71{
72	unsigned long retval;
73
74	__asm__ __volatile__("rd	%%softint, %0"
75			     : "=r" (retval));
76	return retval;
77}
78
79#endif
80