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/* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem Exp $
* irq.h: IRQ registers on the 64-bit Sparc.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
*/
#ifndef _SPARC64_IRQ_H
#define _SPARC64_IRQ_H
#include <linux/linkage.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <asm/pil.h>
#include <asm/ptrace.h>
/* IMAP/ICLR register defines */
#define IMAP_VALID 0x80000000 /* IRQ Enabled */
#define IMAP_TID_UPA 0x7c000000 /* UPA TargetID */
#define IMAP_TID_JBUS 0x7c000000 /* JBUS TargetID */
#define IMAP_TID_SHIFT 26
#define IMAP_AID_SAFARI 0x7c000000 /* Safari AgentID */
#define IMAP_AID_SHIFT 26
#define IMAP_NID_SAFARI 0x03e00000 /* Safari NodeID */
#define IMAP_NID_SHIFT 21
#define IMAP_IGN 0x000007c0 /* IRQ Group Number */
#define IMAP_INO 0x0000003f /* IRQ Number */
#define IMAP_INR 0x000007ff /* Full interrupt number*/
#define ICLR_IDLE 0x00000000 /* Idle state */
#define ICLR_TRANSMIT 0x00000001 /* Transmit state */
#define ICLR_PENDING 0x00000003 /* Pending state */
/* The largest number of unique interrupt sources we support.
* If this needs to ever be larger than 255, you need to change
* the type of ino_bucket->virt_irq as appropriate.
*
* ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
*/
#define NR_IRQS 255
extern void irq_install_pre_handler(int virt_irq,
void (*func)(unsigned int, void *, void *),
void *arg1, void *arg2);
#define irq_canonicalize(irq) (irq)
extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
static __inline__ void set_softint(unsigned long bits)
{
__asm__ __volatile__("wr %0, 0x0, %%set_softint"
: /* No outputs */
: "r" (bits));
}
static __inline__ void clear_softint(unsigned long bits)
{
__asm__ __volatile__("wr %0, 0x0, %%clear_softint"
: /* No outputs */
: "r" (bits));
}
static __inline__ unsigned long get_softint(void)
{
unsigned long retval;
__asm__ __volatile__("rd %%softint, %0"
: "=r" (retval));
return retval;
}
#endif
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