185 lines
5.9 KiB
C
185 lines
5.9 KiB
C
/* $Id: irq.h,v 1.32 2000/08/26 02:42:28 anton Exp $
|
|
* irq.h: IRQ registers on the Sparc.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef _SPARC_IRQ_H
|
|
#define _SPARC_IRQ_H
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/threads.h> /* For NR_CPUS */
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <asm/system.h> /* For SUN4M_NCPUS */
|
|
#include <asm/btfixup.h>
|
|
|
|
#define __irq_ino(irq) irq
|
|
#define __irq_pil(irq) irq
|
|
|
|
#define NR_IRQS 16
|
|
|
|
#define irq_canonicalize(irq) (irq)
|
|
|
|
/* Dave Redman (djhr@tadpole.co.uk)
|
|
* changed these to function pointers.. it saves cycles and will allow
|
|
* the irq dependencies to be split into different files at a later date
|
|
* sun4c_irq.c, sun4m_irq.c etc so we could reduce the kernel size.
|
|
* Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
|
* Changed these to btfixup entities... It saves cycles :)
|
|
*/
|
|
BTFIXUPDEF_CALL(void, disable_irq, unsigned int)
|
|
BTFIXUPDEF_CALL(void, enable_irq, unsigned int)
|
|
BTFIXUPDEF_CALL(void, disable_pil_irq, unsigned int)
|
|
BTFIXUPDEF_CALL(void, enable_pil_irq, unsigned int)
|
|
BTFIXUPDEF_CALL(void, clear_clock_irq, void)
|
|
BTFIXUPDEF_CALL(void, clear_profile_irq, int)
|
|
BTFIXUPDEF_CALL(void, load_profile_irq, int, unsigned int)
|
|
|
|
static inline void disable_irq_nosync(unsigned int irq)
|
|
{
|
|
BTFIXUP_CALL(disable_irq)(irq);
|
|
}
|
|
|
|
static inline void disable_irq(unsigned int irq)
|
|
{
|
|
BTFIXUP_CALL(disable_irq)(irq);
|
|
}
|
|
|
|
static inline void enable_irq(unsigned int irq)
|
|
{
|
|
BTFIXUP_CALL(enable_irq)(irq);
|
|
}
|
|
|
|
static inline void disable_pil_irq(unsigned int irq)
|
|
{
|
|
BTFIXUP_CALL(disable_pil_irq)(irq);
|
|
}
|
|
|
|
static inline void enable_pil_irq(unsigned int irq)
|
|
{
|
|
BTFIXUP_CALL(enable_pil_irq)(irq);
|
|
}
|
|
|
|
static inline void clear_clock_irq(void)
|
|
{
|
|
BTFIXUP_CALL(clear_clock_irq)();
|
|
}
|
|
|
|
static inline void clear_profile_irq(int irq)
|
|
{
|
|
BTFIXUP_CALL(clear_profile_irq)(irq);
|
|
}
|
|
|
|
static inline void load_profile_irq(int cpu, int limit)
|
|
{
|
|
BTFIXUP_CALL(load_profile_irq)(cpu, limit);
|
|
}
|
|
|
|
extern void (*sparc_init_timers)(irqreturn_t (*lvl10_irq)(int, void *, struct pt_regs *));
|
|
extern void claim_ticker14(irqreturn_t (*irq_handler)(int, void *, struct pt_regs *),
|
|
int irq,
|
|
unsigned int timeout);
|
|
|
|
#ifdef CONFIG_SMP
|
|
BTFIXUPDEF_CALL(void, set_cpu_int, int, int)
|
|
BTFIXUPDEF_CALL(void, clear_cpu_int, int, int)
|
|
BTFIXUPDEF_CALL(void, set_irq_udt, int)
|
|
|
|
#define set_cpu_int(cpu,level) BTFIXUP_CALL(set_cpu_int)(cpu,level)
|
|
#define clear_cpu_int(cpu,level) BTFIXUP_CALL(clear_cpu_int)(cpu,level)
|
|
#define set_irq_udt(cpu) BTFIXUP_CALL(set_irq_udt)(cpu)
|
|
#endif
|
|
|
|
extern int request_fast_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, __const__ char *devname);
|
|
|
|
/* On the sun4m, just like the timers, we have both per-cpu and master
|
|
* interrupt registers.
|
|
*/
|
|
|
|
/* These registers are used for sending/receiving irqs from/to
|
|
* different cpu's.
|
|
*/
|
|
struct sun4m_intreg_percpu {
|
|
unsigned int tbt; /* Interrupts still pending for this cpu. */
|
|
|
|
/* These next two registers are WRITE-ONLY and are only
|
|
* "on bit" sensitive, "off bits" written have NO affect.
|
|
*/
|
|
unsigned int clear; /* Clear this cpus irqs here. */
|
|
unsigned int set; /* Set this cpus irqs here. */
|
|
unsigned char space[PAGE_SIZE - 12];
|
|
};
|
|
|
|
/*
|
|
* djhr
|
|
* Actually the clear and set fields in this struct are misleading..
|
|
* according to the SLAVIO manual (and the same applies for the SEC)
|
|
* the clear field clears bits in the mask which will ENABLE that IRQ
|
|
* the set field sets bits in the mask to DISABLE the IRQ.
|
|
*
|
|
* Also the undirected_xx address in the SLAVIO is defined as
|
|
* RESERVED and write only..
|
|
*
|
|
* DAVEM_NOTE: The SLAVIO only specifies behavior on uniprocessor
|
|
* sun4m machines, for MP the layout makes more sense.
|
|
*/
|
|
struct sun4m_intregs {
|
|
struct sun4m_intreg_percpu cpu_intregs[SUN4M_NCPUS];
|
|
unsigned int tbt; /* IRQ's that are still pending. */
|
|
unsigned int irqs; /* Master IRQ bits. */
|
|
|
|
/* Again, like the above, two these registers are WRITE-ONLY. */
|
|
unsigned int clear; /* Clear master IRQ's by setting bits here. */
|
|
unsigned int set; /* Set master IRQ's by setting bits here. */
|
|
|
|
/* This register is both READ and WRITE. */
|
|
unsigned int undirected_target; /* Which cpu gets undirected irqs. */
|
|
};
|
|
|
|
extern struct sun4m_intregs *sun4m_interrupts;
|
|
|
|
/*
|
|
* Bit field defines for the interrupt registers on various
|
|
* Sparc machines.
|
|
*/
|
|
|
|
/* The sun4c interrupt register. */
|
|
#define SUN4C_INT_ENABLE 0x01 /* Allow interrupts. */
|
|
#define SUN4C_INT_E14 0x80 /* Enable level 14 IRQ. */
|
|
#define SUN4C_INT_E10 0x20 /* Enable level 10 IRQ. */
|
|
#define SUN4C_INT_E8 0x10 /* Enable level 8 IRQ. */
|
|
#define SUN4C_INT_E6 0x08 /* Enable level 6 IRQ. */
|
|
#define SUN4C_INT_E4 0x04 /* Enable level 4 IRQ. */
|
|
#define SUN4C_INT_E1 0x02 /* Enable level 1 IRQ. */
|
|
|
|
/* Dave Redman (djhr@tadpole.co.uk)
|
|
* The sun4m interrupt registers.
|
|
*/
|
|
#define SUN4M_INT_ENABLE 0x80000000
|
|
#define SUN4M_INT_E14 0x00000080
|
|
#define SUN4M_INT_E10 0x00080000
|
|
|
|
#define SUN4M_HARD_INT(x) (0x000000001 << (x))
|
|
#define SUN4M_SOFT_INT(x) (0x000010000 << (x))
|
|
|
|
#define SUN4M_INT_MASKALL 0x80000000 /* mask all interrupts */
|
|
#define SUN4M_INT_MODULE_ERR 0x40000000 /* module error */
|
|
#define SUN4M_INT_M2S_WRITE 0x20000000 /* write buffer error */
|
|
#define SUN4M_INT_ECC 0x10000000 /* ecc memory error */
|
|
#define SUN4M_INT_FLOPPY 0x00400000 /* floppy disk */
|
|
#define SUN4M_INT_MODULE 0x00200000 /* module interrupt */
|
|
#define SUN4M_INT_VIDEO 0x00100000 /* onboard video */
|
|
#define SUN4M_INT_REALTIME 0x00080000 /* system timer */
|
|
#define SUN4M_INT_SCSI 0x00040000 /* onboard scsi */
|
|
#define SUN4M_INT_AUDIO 0x00020000 /* audio/isdn */
|
|
#define SUN4M_INT_ETHERNET 0x00010000 /* onboard ethernet */
|
|
#define SUN4M_INT_SERIAL 0x00008000 /* serial ports */
|
|
#define SUN4M_INT_KBDMS 0x00004000 /* keyboard/mouse */
|
|
#define SUN4M_INT_SBUSBITS 0x00003F80 /* sbus int bits */
|
|
|
|
#define SUN4M_INT_SBUS(x) (1 << (x+7))
|
|
#define SUN4M_INT_VME(x) (1 << (x))
|
|
|
|
#endif
|