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m68k/irq: Remove obsolete m68k irq framework 

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
hifive-unleashed-5.1
Geert Uytterhoeven 2011-09-11 11:28:04 +02:00
parent a03010ed9b
commit d890d73995
13 changed files with 4 additions and 820 deletions
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10
arch/m68k/Kconfig
View File

@ -4,8 +4,8 @@ config M68K
select HAVE_IDE
select HAVE_AOUT if MMU
select GENERIC_ATOMIC64 if MMU
select HAVE_GENERIC_HARDIRQS if !MMU
select GENERIC_IRQ_SHOW if !MMU
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
config RWSEM_GENERIC_SPINLOCK
@ -84,12 +84,6 @@ config MMU_SUN3
bool
depends on MMU && !MMU_MOTOROLA
config USE_GENERIC_HARDIRQS
bool "Use genirq"
depends on MMU
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
menu "Platform setup"
source arch/m68k/Kconfig.cpu

114
arch/m68k/amiga/amiints.c
View File

@ -9,9 +9,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#endif
#include <asm/irq.h>
#include <asm/traps.h>
@ -48,7 +46,6 @@ static struct irq_chip amiga_irq_chip = {
* The builtin Amiga hardware interrupt handlers.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
static void ami_int1(unsigned int irq, struct irq_desc *desc)
{
unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
@ -140,103 +137,6 @@ static void ami_int5(unsigned int irq, struct irq_desc *desc)
generic_handle_irq(IRQ_AMIGA_DSKSYN);
}
}
#else /* !CONFIG_GENERIC_HARDIRQS */
static irqreturn_t ami_int1(int irq, void *dev_id)
{
unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
/* if serial transmit buffer empty, interrupt */
if (ints & IF_TBE) {
amiga_custom.intreq = IF_TBE;
generic_handle_irq(IRQ_AMIGA_TBE);
}
/* if floppy disk transfer complete, interrupt */
if (ints & IF_DSKBLK) {
amiga_custom.intreq = IF_DSKBLK;
generic_handle_irq(IRQ_AMIGA_DSKBLK);
}
/* if software interrupt set, interrupt */
if (ints & IF_SOFT) {
amiga_custom.intreq = IF_SOFT;
generic_handle_irq(IRQ_AMIGA_SOFT);
}
return IRQ_HANDLED;
}
static irqreturn_t ami_int3(int irq, void *dev_id)
{
unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
/* if a blitter interrupt */
if (ints & IF_BLIT) {
amiga_custom.intreq = IF_BLIT;
generic_handle_irq(IRQ_AMIGA_BLIT);
}
/* if a copper interrupt */
if (ints & IF_COPER) {
amiga_custom.intreq = IF_COPER;
generic_handle_irq(IRQ_AMIGA_COPPER);
}
/* if a vertical blank interrupt */
if (ints & IF_VERTB) {
amiga_custom.intreq = IF_VERTB;
generic_handle_irq(IRQ_AMIGA_VERTB);
}
return IRQ_HANDLED;
}
static irqreturn_t ami_int4(int irq, void *dev_id)
{
unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
/* if audio 0 interrupt */
if (ints & IF_AUD0) {
amiga_custom.intreq = IF_AUD0;
generic_handle_irq(IRQ_AMIGA_AUD0);
}
/* if audio 1 interrupt */
if (ints & IF_AUD1) {
amiga_custom.intreq = IF_AUD1;
generic_handle_irq(IRQ_AMIGA_AUD1);
}
/* if audio 2 interrupt */
if (ints & IF_AUD2) {
amiga_custom.intreq = IF_AUD2;
generic_handle_irq(IRQ_AMIGA_AUD2);
}
/* if audio 3 interrupt */
if (ints & IF_AUD3) {
amiga_custom.intreq = IF_AUD3;
generic_handle_irq(IRQ_AMIGA_AUD3);
}
return IRQ_HANDLED;
}
static irqreturn_t ami_int5(int irq, void *dev_id)
{
unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
/* if serial receive buffer full interrupt */
if (ints & IF_RBF) {
/* acknowledge of IF_RBF must be done by the serial interrupt */
generic_handle_irq(IRQ_AMIGA_RBF);
}
/* if a disk sync interrupt */
if (ints & IF_DSKSYN) {
amiga_custom.intreq = IF_DSKSYN;
generic_handle_irq(IRQ_AMIGA_DSKSYN);
}
return IRQ_HANDLED;
}
#endif /* !CONFIG_GENERIC_HARDIRQS */
/*
@ -252,7 +152,6 @@ static irqreturn_t ami_int5(int irq, void *dev_id)
void __init amiga_init_IRQ(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER,
AMI_STD_IRQS);
@ -260,19 +159,6 @@ void __init amiga_init_IRQ(void)
irq_set_chained_handler(IRQ_AUTO_3, ami_int3);
irq_set_chained_handler(IRQ_AUTO_4, ami_int4);
irq_set_chained_handler(IRQ_AUTO_5, ami_int5);
#else /* !CONFIG_GENERIC_HARDIRQS */
if (request_irq(IRQ_AUTO_1, ami_int1, 0, "int1", NULL))
pr_err("Couldn't register int%d\n", 1);
if (request_irq(IRQ_AUTO_3, ami_int3, 0, "int3", NULL))
pr_err("Couldn't register int%d\n", 3);
if (request_irq(IRQ_AUTO_4, ami_int4, 0, "int4", NULL))
pr_err("Couldn't register int%d\n", 4);
if (request_irq(IRQ_AUTO_5, ami_int5, 0, "int5", NULL))
pr_err("Couldn't register int%d\n", 5);
m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER,
AMI_STD_IRQS);
#endif /* !CONFIG_GENERIC_HARDIRQS */
/* turn off PCMCIA interrupts */
if (AMIGAHW_PRESENT(PCMCIA))

22
arch/m68k/apollo/dn_ints.c
View File

@ -1,23 +1,9 @@
#include <linux/interrupt.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#else
#include <asm/irq.h>
#endif
#include <asm/traps.h>
#include <asm/apollohw.h>
#ifndef CONFIG_GENERIC_HARDIRQS
void dn_process_int(unsigned int irq, struct pt_regs *fp)
{
do_IRQ(irq, fp);
*(volatile unsigned char *)(pica)=0x20;
*(volatile unsigned char *)(picb)=0x20;
}
#endif
unsigned int apollo_irq_startup(struct irq_data *data)
{
unsigned int irq = data->irq;
@ -39,31 +25,23 @@ void apollo_irq_shutdown(struct irq_data *data)
*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
}
#ifdef CONFIG_GENERIC_HARDIRQS
void apollo_irq_eoi(struct irq_data *data)
{
*(volatile unsigned char *)(pica) = 0x20;
*(volatile unsigned char *)(picb) = 0x20;
}
#endif
static struct irq_chip apollo_irq_chip = {
.name = "apollo",
.irq_startup = apollo_irq_startup,
.irq_shutdown = apollo_irq_shutdown,
#ifdef CONFIG_GENERIC_HARDIRQS
.irq_eoi = apollo_irq_eoi,
#endif
};
void __init dn_init_IRQ(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
m68k_setup_user_interrupt(VEC_USER + 96, 16, NULL);
#else
m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
#endif
m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
IRQ_APOLLO, 16);
}

63
arch/m68k/include/asm/irq.h
View File

@ -62,67 +62,6 @@
#define IRQ_FLG_STD (0x8000) /* internally used */
#endif
#ifndef CONFIG_GENERIC_HARDIRQS
#include <linux/linkage.h>
#include <linux/hardirq.h>
#include <linux/irqreturn.h>
#include <linux/spinlock_types.h>
struct pt_regs;
/*
* This structure is used to chain together the ISRs for a particular
* interrupt source (if it supports chaining).
*/
struct irq_data {
unsigned int irq;
irqreturn_t (*handler)(int, void *);
void *dev_id;
struct irq_data *next;
unsigned long flags;
const char *devname;
};
/*
* This structure has only 4 elements for speed reasons
*/
struct irq_handler {
int (*handler)(int, void *);
unsigned long flags;
void *dev_id;
const char *devname;
};
struct irq_chip {
const char *name;
unsigned int (*irq_startup)(struct irq_data *data);
void (*irq_shutdown)(struct irq_data *data);
void (*irq_enable)(struct irq_data *data);
void (*irq_disable)(struct irq_data *data);
};
extern unsigned int m68k_irq_startup(struct irq_data *data);
extern unsigned int m68k_irq_startup_irq(unsigned int irq);
extern void m68k_irq_shutdown(struct irq_data *data);
/*
* This function returns a new struct irq_data
*/
extern struct irq_data *new_irq_node(void);
extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *));
extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
void (*handler)(unsigned int, struct pt_regs *));
extern void m68k_setup_irq_chip(struct irq_chip *, unsigned int, unsigned int);
#define m68k_setup_irq_controller(chip, dummy, irq, cnt) \
m68k_setup_irq_chip((chip), (irq), (cnt))
extern void generic_handle_irq(unsigned int);
asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
#else /* CONFIG_GENERIC_HARDIRQS */
struct irq_data;
struct irq_chip;
struct irq_desc;
@ -139,8 +78,6 @@ extern void m68k_setup_irq_controller(struct irq_chip *,
struct irq_desc *desc),
unsigned int irq, unsigned int cnt);
#endif /* CONFIG_GENERIC_HARDIRQS */
extern unsigned int irq_canonicalize(unsigned int irq);
#else

5
arch/m68k/include/asm/q40ints.h
View File

@ -24,8 +24,3 @@
#define Q40_IRQ10_MASK (1<<5)
#define Q40_IRQ14_MASK (1<<6)
#define Q40_IRQ15_MASK (1<<7)
#ifndef CONFIG_GENERIC_HARDIRQS
extern unsigned long q40_probe_irq_on (void);
extern int q40_probe_irq_off (unsigned long irqs);
#endif

10
arch/m68k/kernel/Makefile
View File

@ -6,11 +6,10 @@ extra-$(CONFIG_MMU) := head.o
extra-$(CONFIG_SUN3) := sun3-head.o
extra-y += vmlinux.lds
obj-y := entry.o m68k_ksyms.o module.o process.o ptrace.o setup.o signal.o \
sys_m68k.o syscalltable.o time.o traps.o
obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \
signal.o sys_m68k.o syscalltable.o time.o traps.o
obj-$(CONFIG_MMU) += ints.o vectors.o
devres-$(CONFIG_MMU) = ../../../kernel/irq/devres.o
ifndef CONFIG_MMU_SUN3
obj-y += dma.o
@ -18,9 +17,4 @@ endif
ifndef CONFIG_MMU
obj-y += init_task.o
endif
ifdef CONFIG_GENERIC_HARDIRQS
obj-y += irq.o
else
obj-y += devres.o
endif

297
arch/m68k/kernel/ints.c
View File

@ -31,20 +31,6 @@ extern u32 auto_irqhandler_fixup[];
extern u32 user_irqhandler_fixup[];
extern u16 user_irqvec_fixup[];
#ifndef CONFIG_GENERIC_HARDIRQS
/* table for system interrupt handlers */
static struct irq_data *irq_list[NR_IRQS];
static struct irq_chip *irq_chip[NR_IRQS];
static int irq_depth[NR_IRQS];
static inline int irq_set_chip(unsigned int irq, struct irq_chip *chip)
{
irq_chip[irq] = chip;
return 0;
}
#define irq_set_chip_and_handler(irq, chip, dummy) irq_set_chip(irq, chip)
#endif /* !CONFIG_GENERIC_HARDIRQS */
static int m68k_first_user_vec;
static struct irq_chip auto_irq_chip = {
@ -59,11 +45,6 @@ static struct irq_chip user_irq_chip = {
.irq_shutdown = m68k_irq_shutdown,
};
#ifndef CONFIG_GENERIC_HARDIRQS
#define NUM_IRQ_NODES 100
static struct irq_data nodes[NUM_IRQ_NODES];
#endif /* !CONFIG_GENERIC_HARDIRQS */
/*
* void init_IRQ(void)
*
@ -133,8 +114,6 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
flush_icache();
}
#ifdef CONFIG_GENERIC_HARDIRQS
/**
* m68k_setup_irq_controller
* @chip: irq chip which controls specified irq
@ -160,198 +139,6 @@ void m68k_setup_irq_controller(struct irq_chip *chip,
}
}
#else /* !CONFIG_GENERIC_HARDIRQS */
/**
* m68k_setup_irq_chip
* @contr: irq controller which controls specified irq
* @irq: first irq to be managed by the controller
*
* Change the controller for the specified range of irq, which will be used to
* manage these irq. auto/user irq already have a default controller, which can
* be changed as well, but the controller probably should use m68k_irq_startup/
* m68k_irq_shutdown.
*/
void m68k_setup_irq_chip(struct irq_chip *contr, unsigned int irq,
unsigned int cnt)
{
int i;
for (i = 0; i < cnt; i++)
irq_set_chip(irq + i, contr);
}
struct irq_data *new_irq_node(void)
{
struct irq_data *node;
short i;
for (node = nodes, i = NUM_IRQ_NODES-1; i >= 0; node++, i--) {
if (!node->handler) {
memset(node, 0, sizeof(*node));
return node;
}
}
printk ("new_irq_node: out of nodes\n");
return NULL;
}
static int m68k_setup_irq(unsigned int irq, struct irq_data *node)
{
struct irq_chip *contr;
struct irq_data **prev;
unsigned long flags;
if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d from %s\n",
__func__, irq, node->devname);
return -ENXIO;
}
local_irq_save(flags);
prev = irq_list + irq;
if (*prev) {
/* Can't share interrupts unless both agree to */
if (!((*prev)->flags & node->flags & IRQF_SHARED)) {
local_irq_restore(flags);
return -EBUSY;
}
while (*prev)
prev = &(*prev)->next;
}
if (!irq_list[irq]) {
if (contr->irq_startup)
contr->irq_startup(node);
else
contr->irq_enable(node);
}
node->next = NULL;
*prev = node;
local_irq_restore(flags);
return 0;
}
int request_irq(unsigned int irq,
irq_handler_t handler,
unsigned long flags, const char *devname, void *dev_id)
{
struct irq_data *node;
int res;
node = new_irq_node();
if (!node)
return -ENOMEM;
node->irq = irq;
node->handler = handler;
node->flags = flags;
node->dev_id = dev_id;
node->devname = devname;
res = m68k_setup_irq(irq, node);
if (res)
node->handler = NULL;
return res;
}
EXPORT_SYMBOL(request_irq);
void free_irq(unsigned int irq, void *dev_id)
{
struct irq_chip *contr;
struct irq_data **p, *node;
unsigned long flags;
if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n", __func__, irq);
return;
}
local_irq_save(flags);
p = irq_list + irq;
while ((node = *p)) {
if (node->dev_id == dev_id)
break;
p = &node->next;
}
if (node) {
*p = node->next;
node->handler = NULL;
} else
printk("%s: Removing probably wrong IRQ %d\n",
__func__, irq);
if (!irq_list[irq]) {
if (contr->irq_shutdown)
contr->irq_shutdown(node);
else
contr->irq_disable(node);
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(free_irq);
void enable_irq(unsigned int irq)
{
struct irq_chip *contr;
unsigned long flags;
if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n",
__func__, irq);
return;
}
local_irq_save(flags);
if (irq_depth[irq]) {
if (!--irq_depth[irq]) {
if (contr->irq_enable)
contr->irq_enable(irq_list[irq]);
}
} else
WARN_ON(1);
local_irq_restore(flags);
}
EXPORT_SYMBOL(enable_irq);
void disable_irq(unsigned int irq)
{
struct irq_chip *contr;
unsigned long flags;
if (irq >= NR_IRQS || !(contr = irq_chip[irq])) {
printk("%s: Incorrect IRQ %d\n",
__func__, irq);
return;
}
local_irq_save(flags);
if (!irq_depth[irq]++) {
if (contr->irq_disable)
contr->irq_disable(irq_list[irq]);
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(disable_irq);
void disable_irq_nosync(unsigned int irq) __attribute__((alias("disable_irq")));
EXPORT_SYMBOL(disable_irq_nosync);
#endif /* !CONFIG_GENERIC_HARDIRQS */
unsigned int m68k_irq_startup_irq(unsigned int irq)
{
if (irq <= IRQ_AUTO_7)
@ -377,36 +164,6 @@ void m68k_irq_shutdown(struct irq_data *data)
}
#ifndef CONFIG_GENERIC_HARDIRQS
/*
* Do we need these probe functions on the m68k?
*
* ... may be useful with ISA devices
*/
unsigned long probe_irq_on (void)
{
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
return q40_probe_irq_on();
#endif
return 0;
}
EXPORT_SYMBOL(probe_irq_on);
int probe_irq_off (unsigned long irqs)
{
#ifdef CONFIG_Q40
if (MACH_IS_Q40)
return q40_probe_irq_off(irqs);
#endif
return 0;
}
EXPORT_SYMBOL(probe_irq_off);
#endif /* CONFIG_GENERIC_HARDIRQS */
unsigned int irq_canonicalize(unsigned int irq)
{
#ifdef CONFIG_Q40
@ -418,63 +175,9 @@ unsigned int irq_canonicalize(unsigned int irq)
EXPORT_SYMBOL(irq_canonicalize);
#ifndef CONFIG_GENERIC_HARDIRQS
void generic_handle_irq(unsigned int irq)
{
struct irq_data *node;
kstat_cpu(0).irqs[irq]++;
node = irq_list[irq];
do {
node->handler(irq, node->dev_id);
node = node->next;
} while (node);
}
asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs;
old_regs = set_irq_regs(regs);
generic_handle_irq(irq);
set_irq_regs(old_regs);
}
asmlinkage void handle_badint(struct pt_regs *regs)
{
kstat_cpu(0).irqs[0]++;
printk("unexpected interrupt from %u\n", regs->vector);
}
int show_interrupts(struct seq_file *p, void *v)
{
struct irq_chip *contr;
struct irq_data *node;
int i = *(loff_t *) v;
/* autovector interrupts */
if (irq_list[i]) {
contr = irq_chip[i];
node = irq_list[i];
seq_printf(p, "%-8s %3u: %10u %s", contr->name, i, kstat_cpu(0).irqs[i], node->devname);
while ((node = node->next))
seq_printf(p, ", %s", node->devname);
seq_puts(p, "\n");
}
return 0;
}
#ifdef CONFIG_PROC_FS
void init_irq_proc(void)
{
/* Insert /proc/irq driver here */
}
#endif
#else /* CONFIG_GENERIC_HARDIRQS */
asmlinkage void handle_badint(struct pt_regs *regs)
{
atomic_inc(&irq_err_count);
pr_warn("unexpected interrupt from %u\n", regs->vector);
}
#endif /* CONFIG_GENERIC_HARDIRQS */

41
arch/m68k/mac/baboon.c
View File

@ -11,9 +11,7 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/init.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#endif
#include <asm/traps.h>
#include <asm/bootinfo.h>
@ -56,7 +54,6 @@ void __init baboon_init(void)
* Baboon interrupt handler. This works a lot like a VIA.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
static void baboon_irq(unsigned int irq, struct irq_desc *desc)
{
int irq_bit, irq_num;
@ -88,39 +85,6 @@ static void baboon_irq(unsigned int irq, struct irq_desc *desc)
baboon->mb_ifr &= ~events;
#endif
}
#else
static irqreturn_t baboon_irq(int irq, void *dev_id)
{
int irq_bit, irq_num;
unsigned char events;
#ifdef DEBUG_IRQS
printk("baboon_irq: mb_control %02X mb_ifr %02X mb_status %02X\n",
(uint) baboon->mb_control, (uint) baboon->mb_ifr,
(uint) baboon->mb_status);
#endif
if (!(events = baboon->mb_ifr & 0x07))
return IRQ_NONE;
irq_num = IRQ_BABOON_0;
irq_bit = 1;
do {
if (events & irq_bit) {
baboon->mb_ifr &= ~irq_bit;
generic_handle_irq(irq_num);
}
irq_bit <<= 1;
irq_num++;
} while(events >= irq_bit);
#if 0
if (baboon->mb_ifr & 0x02) macide_ack_intr(NULL);
/* for now we need to smash all interrupts */
baboon->mb_ifr &= ~events;
#endif
return IRQ_HANDLED;
}
#endif
/*
* Register the Baboon interrupt dispatcher on nubus slot $C.
@ -129,12 +93,7 @@ static irqreturn_t baboon_irq(int irq, void *dev_id)
void __init baboon_register_interrupts(void)
{
baboon_disabled = 0;
#ifdef CONFIG_GENERIC_HARDIRQS
irq_set_chained_handler(IRQ_NUBUS_C, baboon_irq);
#else
if (request_irq(IRQ_NUBUS_C, baboon_irq, 0, "baboon", (void *)baboon))
pr_err("Couldn't register baboon interrupt\n");
#endif
}
/*

78
arch/m68k/mac/oss.c
View File

@ -19,9 +19,7 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/init.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#endif
#include <asm/bootinfo.h>
#include <asm/macintosh.h>
@ -32,11 +30,7 @@
int oss_present;
volatile struct mac_oss *oss;
#ifdef CONFIG_GENERIC_HARDIRQS
extern void via1_irq(unsigned int irq, struct irq_desc *desc);
#else
extern irqreturn_t via1_irq(int, void *);
#endif
/*
* Initialize the OSS
@ -76,7 +70,6 @@ void __init oss_nubus_init(void)
* and SCSI; everything else is routed to its own autovector IRQ.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
static void oss_irq(unsigned int irq, struct irq_desc *desc)
{
int events;
@ -103,35 +96,6 @@ static void oss_irq(unsigned int irq, struct irq_desc *desc)
/* FIXME: error check here? */
}
}
#else
static irqreturn_t oss_irq(int irq, void *dev_id)
{
int events;
events = oss->irq_pending & (OSS_IP_SOUND|OSS_IP_SCSI);
if (!events)
return IRQ_NONE;
#ifdef DEBUG_IRQS
if ((console_loglevel == 10) && !(events & OSS_IP_SCSI)) {
printk("oss_irq: irq %d events = 0x%04X\n", irq,
(int) oss->irq_pending);
}
#endif
/* FIXME: how do you clear a pending IRQ? */
if (events & OSS_IP_SOUND) {
oss->irq_pending &= ~OSS_IP_SOUND;
/* FIXME: call sound handler */
} else if (events & OSS_IP_SCSI) {
oss->irq_pending &= ~OSS_IP_SCSI;
generic_handle_irq(IRQ_MAC_SCSI);
} else {
/* FIXME: error check here? */
}
return IRQ_HANDLED;
}
#endif
/*
* Nubus IRQ handler, OSS style
@ -139,7 +103,6 @@ static irqreturn_t oss_irq(int irq, void *dev_id)
* Unlike the VIA/RBV this is on its own autovector interrupt level.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
static void oss_nubus_irq(unsigned int irq, struct irq_desc *desc)
{
int events, irq_bit, i;
@ -166,35 +129,6 @@ static void oss_nubus_irq(unsigned int irq, struct irq_desc *desc)
}
} while(events & (irq_bit - 1));
}
#else
static irqreturn_t oss_nubus_irq(int irq, void *dev_id)
{
int events, irq_bit, i;
events = oss->irq_pending & OSS_IP_NUBUS;
if (!events)
return IRQ_NONE;
#ifdef DEBUG_NUBUS_INT
if (console_loglevel > 7) {
printk("oss_nubus_irq: events = 0x%04X\n", events);
}
#endif
/* There are only six slots on the OSS, not seven */
i = 6;
irq_bit = 0x40;
do {
--i;
irq_bit >>= 1;
if (events & irq_bit) {
oss->irq_pending &= ~irq_bit;
generic_handle_irq(NUBUS_SOURCE_BASE + i);
}
} while(events & (irq_bit - 1));
return IRQ_HANDLED;
}
#endif
/*
* Register the OSS and NuBus interrupt dispatchers.
@ -202,22 +136,10 @@ static irqreturn_t oss_nubus_irq(int irq, void *dev_id)
void __init oss_register_interrupts(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
irq_set_chained_handler(OSS_IRQLEV_SCSI, oss_irq);
irq_set_chained_handler(OSS_IRQLEV_NUBUS, oss_nubus_irq);
irq_set_chained_handler(OSS_IRQLEV_SOUND, oss_irq);
irq_set_chained_handler(OSS_IRQLEV_VIA1, via1_irq);
#else /* !CONFIG_GENERIC_HARDIRQS */
if (request_irq(OSS_IRQLEV_SCSI, oss_irq, 0, "scsi", (void *)oss))
pr_err("Couldn't register %s interrupt\n", "scsi");
if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, 0, "nubus",
(void *)oss))
pr_err("Couldn't register %s interrupt\n", "nubus");
if (request_irq(OSS_IRQLEV_SOUND, oss_irq, 0, "sound", (void *)oss))
pr_err("Couldn't register %s interrupt\n", "sound");
if (request_irq(OSS_IRQLEV_VIA1, via1_irq, 0, "via1", (void *)via1))
pr_err("Couldn't register %s interrupt\n", "via1");
#endif /* !CONFIG_GENERIC_HARDIRQS */
}
/*

44
arch/m68k/mac/psc.c
View File

@ -18,9 +18,7 @@
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/init.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#endif
#include <asm/traps.h>
#include <asm/bootinfo.h>
@ -116,7 +114,6 @@ void __init psc_init(void)
* PSC interrupt handler. It's a lot like the VIA interrupt handler.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
static void psc_irq(unsigned int irq, struct irq_desc *desc)
{
unsigned int offset = (unsigned int)irq_desc_get_handler_data(desc);
@ -145,36 +142,6 @@ static void psc_irq(unsigned int irq, struct irq_desc *desc)
irq_bit <<= 1;
} while (events >= irq_bit);
}
#else
static irqreturn_t psc_irq(int irq, void *dev_id)
{
int pIFR = pIFRbase + ((int) dev_id);
int pIER = pIERbase + ((int) dev_id);
int irq_num;
unsigned char irq_bit, events;
#ifdef DEBUG_IRQS
printk("psc_irq: irq %d pIFR = 0x%02X pIER = 0x%02X\n",
irq, (int) psc_read_byte(pIFR), (int) psc_read_byte(pIER));
#endif
events = psc_read_byte(pIFR) & psc_read_byte(pIER) & 0xF;
if (!events)
return IRQ_NONE;
irq_num = irq << 3;
irq_bit = 1;
do {
if (events & irq_bit) {
psc_write_byte(pIFR, irq_bit);
generic_handle_irq(irq_num);
}
irq_num++;
irq_bit <<= 1;
} while (events >= irq_bit);
return IRQ_HANDLED;
}
#endif
/*
* Register the PSC interrupt dispatchers for autovector interrupts 3-6.
@ -182,7 +149,6 @@ static irqreturn_t psc_irq(int irq, void *dev_id)
void __init psc_register_interrupts(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
irq_set_chained_handler(IRQ_AUTO_3, psc_irq);
irq_set_handler_data(IRQ_AUTO_3, (void *)0x30);
irq_set_chained_handler(IRQ_AUTO_4, psc_irq);
@ -191,16 +157,6 @@ void __init psc_register_interrupts(void)
irq_set_handler_data(IRQ_AUTO_5, (void *)0x50);
irq_set_chained_handler(IRQ_AUTO_6, psc_irq);
irq_set_handler_data(IRQ_AUTO_6, (void *)0x60);
#else /* !CONFIG_GENERIC_HARDIRQS */
if (request_irq(IRQ_AUTO_3, psc_irq, 0, "psc3", (void *) 0x30))
pr_err("Couldn't register psc%d interrupt\n", 3);
if (request_irq(IRQ_AUTO_4, psc_irq, 0, "psc4", (void *) 0x40))
pr_err("Couldn't register psc%d interrupt\n", 4);
if (request_irq(IRQ_AUTO_5, psc_irq, 0, "psc5", (void *) 0x50))
pr_err("Couldn't register psc%d interrupt\n", 5);
if (request_irq(IRQ_AUTO_6, psc_irq, 0, "psc6", (void *) 0x60))
pr_err("Couldn't register psc%d interrupt\n", 6);
#endif /* !CONFIG_GENERIC_HARDIRQS */
}
void psc_irq_enable(int irq) {

104
arch/m68k/mac/via.c
View File

@ -28,9 +28,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/module.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#endif
#include <asm/bootinfo.h>
#include <asm/macintosh.h>
@ -417,7 +415,6 @@ void __init via_nubus_init(void)
* via6522.c :-), disable/pending masks added.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
void via1_irq(unsigned int irq, struct irq_desc *desc)
{
int irq_num;
@ -459,58 +456,12 @@ static void via2_irq(unsigned int irq, struct irq_desc *desc)
irq_bit <<= 1;
} while (events >= irq_bit);
}
#else
irqreturn_t via1_irq(int irq, void *dev_id)
{
int irq_num;
unsigned char irq_bit, events;
events = via1[vIFR] & via1[vIER] & 0x7F;
if (!events)
return IRQ_NONE;
irq_num = VIA1_SOURCE_BASE;
irq_bit = 1;
do {
if (events & irq_bit) {
via1[vIFR] = irq_bit;
generic_handle_irq(irq_num);
}
++irq_num;
irq_bit <<= 1;
} while (events >= irq_bit);
return IRQ_HANDLED;
}
irqreturn_t via2_irq(int irq, void *dev_id)
{
int irq_num;
unsigned char irq_bit, events;
events = via2[gIFR] & via2[gIER] & 0x7F;
if (!events)
return IRQ_NONE;
irq_num = VIA2_SOURCE_BASE;
irq_bit = 1;
do {
if (events & irq_bit) {
via2[gIFR] = irq_bit | rbv_clear;
generic_handle_irq(irq_num);
}
++irq_num;
irq_bit <<= 1;
} while (events >= irq_bit);
return IRQ_HANDLED;
}
#endif
/*
* Dispatch Nubus interrupts. We are called as a secondary dispatch by the
* VIA2 dispatcher as a fast interrupt handler.
*/
#ifdef CONFIG_GENERIC_HARDIRQS
void via_nubus_irq(unsigned int irq, struct irq_desc *desc)
{
int slot_irq;
@ -545,43 +496,6 @@ void via_nubus_irq(unsigned int irq, struct irq_desc *desc)
events &= ~via2[vDirA];
} while (events);
}
#else
irqreturn_t via_nubus_irq(int irq, void *dev_id)
{
int slot_irq;
unsigned char slot_bit, events;
events = ~via2[gBufA] & 0x7F;
if (rbv_present)
events &= via2[rSIER];
else
events &= ~via2[vDirA];
if (!events)
return IRQ_NONE;
do {
slot_irq = IRQ_NUBUS_F;
slot_bit = 0x40;
do {
if (events & slot_bit) {
events &= ~slot_bit;
generic_handle_irq(slot_irq);
}
--slot_irq;
slot_bit >>= 1;
} while (events);
/* clear the CA1 interrupt and make certain there's no more. */
via2[gIFR] = 0x02 | rbv_clear;
events = ~via2[gBufA] & 0x7F;
if (rbv_present)
events &= via2[rSIER];
else
events &= ~via2[vDirA];
} while (events);
return IRQ_HANDLED;
}
#endif
/*
* Register the interrupt dispatchers for VIA or RBV machines only.
@ -589,7 +503,6 @@ irqreturn_t via_nubus_irq(int irq, void *dev_id)
void __init via_register_interrupts(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
if (via_alt_mapping) {
/* software interrupt */
irq_set_chained_handler(IRQ_AUTO_1, via1_irq);
@ -600,23 +513,6 @@ void __init via_register_interrupts(void)
}
irq_set_chained_handler(IRQ_AUTO_2, via2_irq);
irq_set_chained_handler(IRQ_MAC_NUBUS, via_nubus_irq);
#else
if (via_alt_mapping) {
if (request_irq(IRQ_AUTO_1, via1_irq, 0, "software",
(void *)via1))
pr_err("Couldn't register %s interrupt\n", "software");
if (request_irq(IRQ_AUTO_6, via1_irq, 0, "via1", (void *)via1))
pr_err("Couldn't register %s interrupt\n", "via1");
} else {
if (request_irq(IRQ_AUTO_1, via1_irq, 0, "via1", (void *)via1))
pr_err("Couldn't register %s interrupt\n", "via1");
}
if (request_irq(IRQ_AUTO_2, via2_irq, 0, "via2", (void *)via2))
pr_err("Couldn't register %s interrupt\n", "via2");
if (request_irq(IRQ_MAC_NUBUS, via_nubus_irq, 0, "nubus",
(void *)via2))
pr_err("Couldn't register %s interrupt\n", "nubus");
#endif
}
void via_irq_enable(int irq) {

16
arch/m68k/q40/q40ints.c
View File

@ -15,11 +15,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#else
#include <asm/irq.h>
#endif
#include <asm/ptrace.h>
#include <asm/system.h>
@ -329,15 +325,3 @@ void q40_irq_disable(struct irq_data *data)
printk("disable_irq nesting count %d\n",mext_disabled);
}
}
#ifndef CONFIG_GENERIC_HARDIRQS
unsigned long q40_probe_irq_on(void)
{
printk("irq probing not working - reconfigure the driver to avoid this\n");
return -1;
}
int q40_probe_irq_off(unsigned long irqs)
{
return -1;
}
#endif

20
arch/m68k/sun3/sun3ints.c
View File

@ -53,9 +53,6 @@ static irqreturn_t sun3_int7(int irq, void *dev_id)
{
unsigned int cnt;
#ifndef CONFIG_GENERIC_HARDIRQS
*sun3_intreg |= (1 << irq);
#endif
cnt = kstat_irqs_cpu(irq, 0);
if (!(cnt % 2000))
sun3_leds(led_pattern[cnt % 16000 / 2000]);
@ -69,9 +66,6 @@ static irqreturn_t sun3_int5(int irq, void *dev_id)
#ifdef CONFIG_SUN3
intersil_clear();
#endif
#ifndef CONFIG_GENERIC_HARDIRQS
*sun3_intreg |= (1 << irq);
#endif
#ifdef CONFIG_SUN3
intersil_clear();
#endif
@ -89,15 +83,6 @@ static irqreturn_t sun3_vec255(int irq, void *dev_id)
return IRQ_HANDLED;
}
#ifndef CONFIG_GENERIC_HARDIRQS
static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
{
*sun3_intreg &= ~(1 << irq);
do_IRQ(irq, fp);
}
#endif
static void sun3_irq_enable(struct irq_data *data)
{
sun3_enable_irq(data->irq);
@ -114,19 +99,14 @@ static struct irq_chip sun3_irq_chip = {
.irq_shutdown = m68k_irq_shutdown,
.irq_enable = sun3_irq_enable,
.irq_disable = sun3_irq_disable,
#ifdef CONFIG_GENERIC_HARDIRQS
.irq_mask = sun3_irq_disable,
.irq_unmask = sun3_irq_enable,
#endif
};
void __init sun3_init_IRQ(void)
{
*sun3_intreg = 1;
#ifndef CONFIG_GENERIC_HARDIRQS
m68k_setup_auto_interrupt(sun3_inthandle);
#endif
m68k_setup_irq_controller(&sun3_irq_chip, handle_level_irq, IRQ_AUTO_1,
7);
m68k_setup_user_interrupt(VEC_USER, 128, NULL);