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/* SPDX-License-Identifier: GPL-2.0 */
/* irq.h: IRQ registers on the 64-bit Sparc.
* Copyright (C) 1996 David S. Miller (
* Copyright (C) 1998 Jakub Jelinek (
#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 0x80000000UL /* IRQ Enabled */
#define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
#define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
#define IMAP_TID_SHIFT 26
#define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
#define IMAP_AID_SHIFT 26
#define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */
#define IMAP_NID_SHIFT 21
#define IMAP_IGN 0x000007c0UL /* IRQ Group Number */
#define IMAP_INO 0x0000003fUL /* IRQ Number */
#define IMAP_INR 0x000007ffUL /* Full interrupt number*/
#define ICLR_IDLE 0x00000000UL /* Idle state */
#define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
#define ICLR_PENDING 0x00000003UL /* 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->irq as appropriate.
* ino_bucket->irq allocation is made during {sun4v_,}build_irq().
#define NR_IRQS (2048)
void irq_install_pre_handler(int irq,
void (*func)(unsigned int, void *, void *),
void *arg1, void *arg2);
#define irq_canonicalize(irq) (irq)
unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
unsigned int sun4v_build_msi(u32 devhandle, unsigned int *irq_p,
unsigned int msi_devino_start,
unsigned int msi_devino_end);
void sun4v_destroy_msi(unsigned int irq);
unsigned int sun4u_build_msi(u32 portid, unsigned int *irq_p,
unsigned int msi_devino_start,
unsigned int msi_devino_end,
unsigned long imap_base,
unsigned long iclr_base);
void sun4u_destroy_msi(unsigned int irq);
unsigned int irq_alloc(unsigned int dev_handle, unsigned int dev_ino);
void irq_free(unsigned int irq);
void __init init_IRQ(void);
void fixup_irqs(void);
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;
void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
bool exclude_self);
#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
extern void *hardirq_stack[NR_CPUS];
extern void *softirq_stack[NR_CPUS];
#define NO_IRQ 0xffffffff