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