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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070018/* 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 */
David S. Millerebd8c562006-02-17 08:38:06 -080022#define IMAP_TID_SHIFT 26
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#define IMAP_AID_SAFARI 0x7c000000 /* Safari AgentID */
David S. Millerebd8c562006-02-17 08:38:06 -080024#define IMAP_AID_SHIFT 26
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#define IMAP_NID_SAFARI 0x03e00000 /* Safari NodeID */
David S. Millerebd8c562006-02-17 08:38:06 -080026#define IMAP_NID_SHIFT 21
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#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
David S. Miller8047e242006-06-20 01:22:35 -070035/* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
David S. Miller8047e242006-06-20 01:22:35 -070043extern void irq_install_pre_handler(int virt_irq,
David S. Millere18e2a02006-06-20 01:23:32 -070044 void (*func)(unsigned int, void *, void *),
David S. Miller8047e242006-06-20 01:22:35 -070045 void *arg1, void *arg2);
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#define irq_canonicalize(irq) (irq)
David S. Millere18e2a02006-06-20 01:23:32 -070047extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
48extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
David S. Miller35a17eb2007-02-10 17:41:02 -080049extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
50 unsigned int msi_devino_start,
51 unsigned int msi_devino_end);
52extern void sun4v_destroy_msi(unsigned int virt_irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055static __inline__ void set_softint(unsigned long bits)
56{
57 __asm__ __volatile__("wr %0, 0x0, %%set_softint"
58 : /* No outputs */
59 : "r" (bits));
60}
61
62static __inline__ void clear_softint(unsigned long bits)
63{
64 __asm__ __volatile__("wr %0, 0x0, %%clear_softint"
65 : /* No outputs */
66 : "r" (bits));
67}
68
69static __inline__ unsigned long get_softint(void)
70{
71 unsigned long retval;
72
73 __asm__ __volatile__("rd %%softint, %0"
74 : "=r" (retval));
75 return retval;
76}
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078#endif