1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
158 lines
4.7 KiB
C
158 lines
4.7 KiB
C
/* $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>
|
|
|
|
/* 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
|
|
* SBUS/floppy interrupt 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;
|
|
|
|
/* This is used to deal with IBF_DMA_SYNC on
|
|
* Sabre systems.
|
|
*/
|
|
/*0x07*/unsigned char synctab_ent;
|
|
|
|
/* Reference to handler for this IRQ. If this is
|
|
* non-NULL this means it is active and should be
|
|
* serviced. Else the pending member is set to one
|
|
* and later registry of the interrupt checks for
|
|
* this condition.
|
|
*
|
|
* Normally this is just an irq_action structure.
|
|
* But, on PCI, if multiple interrupt sources behind
|
|
* a bridge have multiple interrupt sources that share
|
|
* the same INO bucket, this points to an array of
|
|
* pointers to four IRQ action structures.
|
|
*/
|
|
/*0x08*/void *irq_info;
|
|
|
|
/* Sun5 Interrupt Clear Register. */
|
|
/*0x10*/unsigned long iclr;
|
|
|
|
/* Sun5 Interrupt Mapping Register. */
|
|
/*0x18*/unsigned long imap;
|
|
|
|
};
|
|
|
|
#ifdef CONFIG_PCI
|
|
extern unsigned long pci_dma_wsync;
|
|
extern unsigned long dma_sync_reg_table[256];
|
|
extern unsigned char dma_sync_reg_table_entry;
|
|
#endif
|
|
|
|
/* 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_AID_SAFARI 0x7c000000 /* Safari AgentID */
|
|
#define IMAP_NID_SAFARI 0x03e00000 /* Safari NodeID */
|
|
#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_DMA_SYNC 0x01 /* DMA synchronization behind PCI bridge needed. */
|
|
#define IBF_PCI 0x02 /* Indicates PSYCHO/SABRE/SCHIZO PCI interrupt. */
|
|
#define IBF_ACTIVE 0x04 /* This interrupt is active and has a handler. */
|
|
#define IBF_MULTI 0x08 /* On PCI, indicates shared bucket. */
|
|
#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 sbus_build_irq(void *sbus, unsigned int ino);
|
|
|
|
extern int request_fast_irq(unsigned int irq,
|
|
irqreturn_t (*handler)(int, void *, struct pt_regs *),
|
|
unsigned long flags, __const__ char *devname,
|
|
void *dev_id);
|
|
|
|
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
|