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David S. Millerd979f172007-10-27 00:13:04 -07001/* irq.h: IRQ registers on the 64-bit Sparc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
David S. Millerd979f172007-10-27 00:13:04 -07003 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
5 */
6
7#ifndef _SPARC64_IRQ_H
8#define _SPARC64_IRQ_H
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/linkage.h>
11#include <linux/kernel.h>
12#include <linux/errno.h>
13#include <linux/interrupt.h>
14#include <asm/pil.h>
15#include <asm/ptrace.h>
16
Linus Torvalds1da177e2005-04-16 15:20:36 -070017/* IMAP/ICLR register defines */
David S. Miller6e69d602007-08-28 14:25:32 -070018#define IMAP_VALID 0x80000000UL /* IRQ Enabled */
19#define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
20#define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
David S. Millerebd8c562006-02-17 08:38:06 -080021#define IMAP_TID_SHIFT 26
David S. Miller6e69d602007-08-28 14:25:32 -070022#define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
David S. Millerebd8c562006-02-17 08:38:06 -080023#define IMAP_AID_SHIFT 26
David S. Miller6e69d602007-08-28 14:25:32 -070024#define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */
David S. Millerebd8c562006-02-17 08:38:06 -080025#define IMAP_NID_SHIFT 21
David S. Miller6e69d602007-08-28 14:25:32 -070026#define IMAP_IGN 0x000007c0UL /* IRQ Group Number */
27#define IMAP_INO 0x0000003fUL /* IRQ Number */
28#define IMAP_INR 0x000007ffUL /* Full interrupt number*/
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
David S. Miller6e69d602007-08-28 14:25:32 -070030#define ICLR_IDLE 0x00000000UL /* Idle state */
31#define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
32#define ICLR_PENDING 0x00000003UL /* Pending state */
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
David S. Miller8047e242006-06-20 01:22:35 -070034/* The largest number of unique interrupt sources we support.
35 * If this needs to ever be larger than 255, you need to change
36 * the type of ino_bucket->virt_irq as appropriate.
37 *
38 * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
39 */
40#define NR_IRQS 255
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
David S. Miller8047e242006-06-20 01:22:35 -070042extern void irq_install_pre_handler(int virt_irq,
David S. Millere18e2a02006-06-20 01:23:32 -070043 void (*func)(unsigned int, void *, void *),
David S. Miller8047e242006-06-20 01:22:35 -070044 void *arg1, void *arg2);
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#define irq_canonicalize(irq) (irq)
David S. Millere18e2a02006-06-20 01:23:32 -070046extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
47extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
David S. Miller4a907de2007-06-13 00:01:04 -070048extern unsigned int sun4v_build_virq(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);
David S. Miller9bb3c222007-08-30 22:33:25 -070053extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
54 unsigned int msi_devino_start,
55 unsigned int msi_devino_end,
56 unsigned long imap_base,
57 unsigned long iclr_base);
58extern void sun4u_destroy_msi(unsigned int virt_irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -070059extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
60
David S. Miller256c1df2007-10-13 23:50:38 -070061extern unsigned char virt_irq_alloc(unsigned int dev_handle,
David S. Millerbb74b732007-10-13 23:27:48 -070062 unsigned int dev_ino);
David S. Miller759f89e2007-10-11 03:16:13 -070063#ifdef CONFIG_PCI_MSI
64extern void virt_irq_free(unsigned int virt_irq);
65#endif
David S. Miller5f92c322007-08-30 22:27:28 -070066
David S. Millere0204402007-07-16 03:49:40 -070067extern void fixup_irqs(void);
68
David S. Millerd979f172007-10-27 00:13:04 -070069static inline void set_softint(unsigned long bits)
Linus Torvalds1da177e2005-04-16 15:20:36 -070070{
71 __asm__ __volatile__("wr %0, 0x0, %%set_softint"
72 : /* No outputs */
73 : "r" (bits));
74}
75
David S. Millerd979f172007-10-27 00:13:04 -070076static inline void clear_softint(unsigned long bits)
Linus Torvalds1da177e2005-04-16 15:20:36 -070077{
78 __asm__ __volatile__("wr %0, 0x0, %%clear_softint"
79 : /* No outputs */
80 : "r" (bits));
81}
82
David S. Millerd979f172007-10-27 00:13:04 -070083static inline unsigned long get_softint(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070084{
85 unsigned long retval;
86
87 __asm__ __volatile__("rd %%softint, %0"
88 : "=r" (retval));
89 return retval;
90}
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092#endif