h8300: remove unused file

/*

 * linux/arch/h8300/kernel/ints.c

 *

 * Yoshinori Sato <ysato@users.sourceforge.jp>

 *

 * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file COPYING in the main directory of this archive

 * for more details.

 *

 * Copyright 1996 Roman Zippel

 * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com>

 */

#include <linux/module.h>

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/kernel_stat.h>

#include <linux/seq_file.h>

#include <linux/interrupt.h>

#include <linux/init.h>

#include <linux/random.h>

#include <linux/bootmem.h>

#include <linux/hardirq.h>

#include <asm/system.h>

#include <asm/irq.h>

#include <asm/traps.h>

#include <asm/io.h>

#include <asm/setup.h>

#include <asm/errno.h>

/*

 * This structure has only 4 elements for speed reasons

 */

typedef struct irq_handler {

	irqreturn_t (*handler)(int, void *, struct pt_regs *);

	int         flags;

	int         count;

	void	    *dev_id;

	const char  *devname;

} irq_handler_t;

static irq_handler_t *irq_list[NR_IRQS];

static int use_kmalloc;

extern unsigned long *interrupt_redirect_table;

extern const int h8300_saved_vectors[];

extern const unsigned long h8300_trap_table[];

int h8300_enable_irq_pin(unsigned int irq);

void h8300_disable_irq_pin(unsigned int irq);

#define CPU_VECTOR ((unsigned long *)0x000000)

#define ADDR_MASK (0xffffff)

#if defined(CONFIG_RAMKERNEL)

static unsigned long __init *get_vector_address(void)

{

	unsigned long *rom_vector = CPU_VECTOR;

	unsigned long base,tmp;

	int vec_no;

	base = rom_vector[EXT_IRQ0] & ADDR_MASK;

	/* check romvector format */

	for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ0+EXT_IRQS; vec_no++) {

		if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK))

			return NULL;

	}

	/* ramvector base address */

	base -= EXT_IRQ0*4;

	/* writerble check */

	tmp = ~(*(volatile unsigned long *)base);

	(*(volatile unsigned long *)base) = tmp;

	if ((*(volatile unsigned long *)base) != tmp)

		return NULL;

	return (unsigned long *)base;

}

#endif

void __init init_IRQ(void)

{

#if defined(CONFIG_RAMKERNEL)

	int i;

	unsigned long *ramvec,*ramvec_p;

	const unsigned long *trap_entry;

	const int *saved_vector;

	ramvec = get_vector_address();

	if (ramvec == NULL)

		panic("interrupt vector serup failed.");

	else

		printk(KERN_INFO "virtual vector at 0x%08lx\n",(unsigned long)ramvec);

	/* create redirect table */

	ramvec_p = ramvec;

	trap_entry = h8300_trap_table;

	saved_vector = h8300_saved_vectors;

	for ( i = 0; i < NR_IRQS; i++) {

		if (i == *saved_vector) {

			ramvec_p++;

			saved_vector++;

		} else {

			if ( i < NR_TRAPS ) {

				if (*trap_entry)

					*ramvec_p = VECTOR(*trap_entry);

				ramvec_p++;

				trap_entry++;

			} else

				*ramvec_p++ = REDIRECT(interrupt_entry);

		}

	}

	interrupt_redirect_table = ramvec;

#ifdef DUMP_VECTOR

	ramvec_p = ramvec;

	for (i = 0; i < NR_IRQS; i++) {

		if ((i % 8) == 0)

			printk(KERN_DEBUG "\n%p: ",ramvec_p);

		printk(KERN_DEBUG "%p ",*ramvec_p);

		ramvec_p++;

	}

	printk(KERN_DEBUG "\n");

#endif

#endif

}

int request_irq(unsigned int irq, 

		irqreturn_t (*handler)(int, void *, struct pt_regs *),

                unsigned long flags, const char *devname, void *dev_id)

{

	irq_handler_t *irq_handle;

	if (irq < 0 || irq >= NR_IRQS) {

		printk(KERN_ERR "Incorrect IRQ %d from %s\n", irq, devname);

		return -EINVAL;

	}

	if (irq_list[irq] || (h8300_enable_irq_pin(irq) == -EBUSY))

		return -EBUSY;

	if (use_kmalloc)

		irq_handle = kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);

	else {

		/* use bootmem allocater */

		irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));

		irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);

	}

	if (irq_handle == NULL)

		return -ENOMEM;

	irq_handle->handler = handler;

	irq_handle->flags   = flags;

	irq_handle->count   = 0;

	irq_handle->dev_id  = dev_id;

	irq_handle->devname = devname;

	irq_list[irq] = irq_handle;

	if (irq_handle->flags & IRQF_SAMPLE_RANDOM)

		rand_initialize_irq(irq);

	enable_irq(irq);

	return 0;

}

EXPORT_SYMBOL(request_irq);

void free_irq(unsigned int irq, void *dev_id)

{

	if (irq >= NR_IRQS)

		return;

	if (!irq_list[irq] || irq_list[irq]->dev_id != dev_id)

		printk(KERN_WARNING "Removing probably wrong IRQ %d from %s\n",

		       irq, irq_list[irq]->devname);

	disable_irq(irq);

	h8300_disable_irq_pin(irq);

	if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {

		kfree(irq_list[irq]);

		irq_list[irq] = NULL;

	}

}

EXPORT_SYMBOL(free_irq);

/*

 * Do we need these probe functions on the m68k?

 */

unsigned long probe_irq_on (void)

{

	return 0;

}

EXPORT_SYMBOL(probe_irq_on);

int probe_irq_off (unsigned long irqs)

{

	return 0;

}

EXPORT_SYMBOL(probe_irq_off);

void enable_irq(unsigned int irq)

{

	if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS))

		IER_REGS |= 1 << (irq - EXT_IRQ0);

}

void disable_irq(unsigned int irq)

{

	if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS))

		IER_REGS &= ~(1 << (irq - EXT_IRQ0));

}

asmlinkage void process_int(int irq, struct pt_regs *fp)

{

	irq_enter();

	h8300_clear_isr(irq);

	if (irq >= NR_TRAPS && irq < NR_IRQS) {

		if (irq_list[irq]) {

			irq_list[irq]->handler(irq, irq_list[irq]->dev_id, fp);

			irq_list[irq]->count++;

			if (irq_list[irq]->flags & IRQF_SAMPLE_RANDOM)

				add_interrupt_randomness(irq);

		}

	} else {

		BUG();

	}

	irq_exit();

}

int show_interrupts(struct seq_file *p, void *v)

{

	int i = *(loff_t *) v;

	if ((i < NR_IRQS) && (irq_list[i]!=NULL)) {

		seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);

		seq_printf(p, "%s\n", irq_list[i]->devname);

	}

	return 0;

}

void init_irq_proc(void)

{

}

static int __init enable_kmalloc(void)

{

	use_kmalloc = 1;

	return 0;

}

core_initcall(enable_kmalloc);