#include <asm/hp300hw.h>
#include <asm/rtc.h>
-#include "ints.h"
#include "time.h"
unsigned long hp300_model;
static char hp300_model_name[13] = "HP9000/";
extern void hp300_reset(void);
-extern irqreturn_t (*hp300_default_handler[])(int, void *, struct pt_regs *);
-extern int show_hp300_interrupts(struct seq_file *, void *);
#ifdef CONFIG_SERIAL_8250_CONSOLE
extern int hp300_setup_serial_console(void) __init;
#endif
hp300_rtc_read(RTC_REG_SEC2);
}
+static void __init hp300_init_IRQ(void)
+{
+}
+
void __init config_hp300(void)
{
mach_sched_init = hp300_sched_init;
mach_init_IRQ = hp300_init_IRQ;
- mach_request_irq = hp300_request_irq;
- mach_free_irq = hp300_free_irq;
mach_get_model = hp300_get_model;
- mach_get_irq_list = show_hp300_interrupts;
mach_gettimeoffset = hp300_gettimeoffset;
- mach_default_handler = &hp300_default_handler;
mach_hwclk = hp300_hwclk;
mach_get_ss = hp300_get_ss;
mach_reset = hp300_reset;
+++ /dev/null
-/*
- * linux/arch/m68k/hp300/ints.c
- *
- * Copyright (C) 1998 Philip Blundell <philb@gnu.org>
- *
- * This file contains the HP300-specific interrupt handling.
- * We only use the autovector interrupts, and therefore we need to
- * maintain lists of devices sharing each ipl.
- * [ipl list code added by Peter Maydell <pmaydell@chiark.greenend.org.uk> 06/1998]
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/kernel_stat.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <asm/machdep.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/traps.h>
-#include <asm/ptrace.h>
-#include <asm/errno.h>
-#include "ints.h"
-
-/* Each ipl has a linked list of interrupt service routines.
- * Service routines are added via hp300_request_irq() and removed
- * via hp300_free_irq(). The device driver should set IRQ_FLG_FAST
- * if it needs to be serviced early (eg FIFOless UARTs); this will
- * cause it to be added at the front of the queue rather than
- * the back.
- * Currently IRQ_FLG_SLOW and flags=0 are treated identically; if
- * we needed three levels of priority we could distinguish them
- * but this strikes me as mildly ugly...
- */
-
-/* we start with no entries in any list */
-static irq_node_t *hp300_irq_list[HP300_NUM_IRQS];
-
-static spinlock_t irqlist_lock;
-
-/* This handler receives all interrupts, dispatching them to the registered handlers */
-static irqreturn_t hp300_int_handler(int irq, void *dev_id, struct pt_regs *fp)
-{
- irq_node_t *t;
- /* We just give every handler on the chain an opportunity to handle
- * the interrupt, in priority order.
- */
- for(t = hp300_irq_list[irq]; t; t=t->next)
- t->handler(irq, t->dev_id, fp);
- /* We could put in some accounting routines, checks for stray interrupts,
- * etc, in here. Note that currently we can't tell whether or not
- * a handler handles the interrupt, though.
- */
- return IRQ_HANDLED;
-}
-
-static irqreturn_t hp300_badint(int irq, void *dev_id, struct pt_regs *fp)
-{
- num_spurious += 1;
- return IRQ_NONE;
-}
-
-irqreturn_t (*hp300_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = {
- [0] = hp300_badint,
- [1] = hp300_int_handler,
- [2] = hp300_int_handler,
- [3] = hp300_int_handler,
- [4] = hp300_int_handler,
- [5] = hp300_int_handler,
- [6] = hp300_int_handler,
- [7] = hp300_int_handler
-};
-
-/* dev_id had better be unique to each handler because it's the only way we have
- * to distinguish handlers when removing them...
- *
- * It would be pretty easy to support IRQ_FLG_LOCK (handler is not replacable)
- * and IRQ_FLG_REPLACE (handler replaces existing one with this dev_id)
- * if we wanted to. IRQ_FLG_FAST is needed for devices where interrupt latency
- * matters (eg the dreaded FIFOless UART...)
- */
-int hp300_request_irq(unsigned int irq,
- irqreturn_t (*handler) (int, void *, struct pt_regs *),
- unsigned long flags, const char *devname, void *dev_id)
-{
- irq_node_t *t, *n = new_irq_node();
-
- if (!n) /* oops, no free nodes */
- return -ENOMEM;
-
- spin_lock_irqsave(&irqlist_lock, flags);
-
- if (!hp300_irq_list[irq]) {
- /* no list yet */
- hp300_irq_list[irq] = n;
- n->next = NULL;
- } else if (flags & IRQ_FLG_FAST) {
- /* insert at head of list */
- n->next = hp300_irq_list[irq];
- hp300_irq_list[irq] = n;
- } else {
- /* insert at end of list */
- for(t = hp300_irq_list[irq]; t->next; t = t->next)
- /* do nothing */;
- n->next = NULL;
- t->next = n;
- }
-
- /* Fill in n appropriately */
- n->handler = handler;
- n->flags = flags;
- n->dev_id = dev_id;
- n->devname = devname;
- spin_unlock_irqrestore(&irqlist_lock, flags);
- return 0;
-}
-
-void hp300_free_irq(unsigned int irq, void *dev_id)
-{
- irq_node_t *t;
- unsigned long flags;
-
- spin_lock_irqsave(&irqlist_lock, flags);
-
- t = hp300_irq_list[irq];
- if (!t) /* no handlers at all for that IRQ */
- {
- printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq);
- spin_unlock_irqrestore(&irqlist_lock, flags);
- return;
- }
-
- if (t->dev_id == dev_id)
- { /* removing first handler on chain */
- t->flags = IRQ_FLG_STD; /* we probably don't really need these */
- t->dev_id = NULL;
- t->devname = NULL;
- t->handler = NULL; /* frees this irq_node_t */
- hp300_irq_list[irq] = t->next;
- spin_unlock_irqrestore(&irqlist_lock, flags);
- return;
- }
-
- /* OK, must be removing from middle of the chain */
-
- for (t = hp300_irq_list[irq]; t->next && t->next->dev_id != dev_id; t = t->next)
- /* do nothing */;
- if (!t->next)
- {
- printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq);
- spin_unlock_irqrestore(&irqlist_lock, flags);
- return;
- }
- /* remove the entry after t: */
- t->next->flags = IRQ_FLG_STD;
- t->next->dev_id = NULL;
- t->next->devname = NULL;
- t->next->handler = NULL;
- t->next = t->next->next;
-
- spin_unlock_irqrestore(&irqlist_lock, flags);
-}
-
-int show_hp300_interrupts(struct seq_file *p, void *v)
-{
- return 0;
-}
-
-void __init hp300_init_IRQ(void)
-{
- spin_lock_init(&irqlist_lock);
-}
projects / linux-2.6 / commitdiff