/* $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/config.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> struct ino_bucket; #define MAX_IRQ_DESC_ACTION 4 struct irq_desc { void (*pre_handler)(struct ino_bucket *, void *, void *); void *pre_handler_arg1; void *pre_handler_arg2; u32 action_active_mask; struct irqaction action[MAX_IRQ_DESC_ACTION]; }; /* You should not mess with this directly. That's the job of irq.c. * * If you make changes here, please update hand coded assembler of * the vectored interrupt trap handler in entry.S -DaveM * * This is currently one DCACHE line, two buckets per L2 cache * line. Keep this in mind please. */ struct ino_bucket { /* Next handler in per-CPU PIL worklist. We know that * bucket pointers have the high 32-bits clear, so to * save space we only store the bits we need. */ /*0x00*/unsigned int irq_chain; /* PIL to schedule this IVEC at. */ /*0x04*/unsigned char pil; /* If an IVEC arrives while irq_info is NULL, we * set this to notify request_irq() about the event. */ /*0x05*/unsigned char pending; /* Miscellaneous flags. */ /*0x06*/unsigned char flags; /* Currently unused. */ /*0x07*/unsigned char __pad; /* Reference to IRQ descriptor for this bucket. */ /*0x08*/struct irq_desc *irq_info; /* Sun5 Interrupt Clear Register. */ /*0x10*/unsigned long iclr; /* Sun5 Interrupt Mapping Register. */ /*0x18*/unsigned long imap; }; /* 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 */ /* Only 8-bits are available, be careful. -DaveM */ #define IBF_PCI 0x02 /* PSYCHO/SABRE/SCHIZO PCI interrupt. */ #define IBF_ACTIVE 0x04 /* Interrupt is active and has a handler.*/ #define IBF_INPROGRESS 0x10 /* IRQ is being serviced. */ #define NUM_IVECS (IMAP_INR + 1) extern struct ino_bucket ivector_table[NUM_IVECS]; #define __irq_ino(irq) \ (((struct ino_bucket *)(unsigned long)(irq)) - &ivector_table[0]) #define __irq_pil(irq) ((struct ino_bucket *)(unsigned long)(irq))->pil #define __bucket(irq) ((struct ino_bucket *)(unsigned long)(irq)) #define __irq(bucket) ((unsigned int)(unsigned long)(bucket)) static __inline__ char *__irq_itoa(unsigned int irq) { static char buff[16]; sprintf(buff, "%d,%x", __irq_pil(irq), (unsigned int)__irq_ino(irq)); return buff; } #define NR_IRQS 16 #define irq_canonicalize(irq) (irq) extern void disable_irq(unsigned int); #define disable_irq_nosync disable_irq extern void enable_irq(unsigned int); extern unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap); extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags); 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; } struct irqaction; struct pt_regs; int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); #endif