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File: [Development] / linux-2.6-xfs / arch / m68knommu / platform / 68328 / ints.c (download)

Revision 1.6, Wed Sep 12 17:09:56 2007 UTC (10 years, 1 month ago) by tes.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.5: +21 -109 lines

Update 2.6.x-xfs to 2.6.23-rc4.

Also update fs/xfs with external mainline changes.
There were 12 such missing commits that I detected:

--------
commit ad690ef9e690f6c31f7d310b09ef1314bcec9033
Author: Al Viro <viro@ftp.linux.org.uk>
    xfs ioctl __user annotations

commit 20c2df83d25c6a95affe6157a4c9cac4cf5ffaac
Author: Paul Mundt <lethal@linux-sh.org>
    mm: Remove slab destructors from kmem_cache_create().

commit d0217ac04ca6591841e5665f518e38064f4e65bd
Author: Nick Piggin <npiggin@suse.de>
    mm: fault feedback #1

commit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7
Author: Nick Piggin <npiggin@suse.de>
    mm: merge populate and nopage into fault (fixes nonlinear)

commit d00806b183152af6d24f46f0c33f14162ca1262a
Author: Nick Piggin <npiggin@suse.de>
    mm: fix fault vs invalidate race for linear mappings

commit a569425512253992cc64ebf8b6d00a62f986db3e
Author: Christoph Hellwig <hch@infradead.org>
    knfsd: exportfs: add exportfs.h header

commit 831441862956fffa17b9801db37e6ea1650b0f69
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Freezer: make kernel threads nonfreezable by default

commit 8e1f936b73150f5095448a0fee6d4f30a1f9001d
Author: Rusty Russell <rusty@rustcorp.com.au>
    mm: clean up and kernelify shrinker registration

commit 5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496
Author: Jens Axboe <jens.axboe@oracle.com>
    sendfile: remove .sendfile from filesystems that use generic_file_sendfile()

commit 8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Add suspend-related notifications for CPU hotplug

commit 59c51591a0ac7568824f541f57de967e88adaa07
Author: Michael Opdenacker <michael@free-electrons.com>
    Fix occurrences of "the the "

commit 0ceb331433e8aad9c5f441a965d7c681f8b9046f
Author: Dmitriy Monakhov <dmonakhov@openvz.org>
    mm: move common segment checks to separate helper function
--------
Merge of 2.6.x-xfs-melb:linux:29656b by kenmcd.

/*
 * linux/arch/m68knommu/platform/68328/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/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/traps.h>
#include <asm/io.h>
#include <asm/machdep.h>

#if defined(CONFIG_M68328)
#include <asm/MC68328.h>
#elif defined(CONFIG_M68EZ328)
#include <asm/MC68EZ328.h>
#elif defined(CONFIG_M68VZ328)
#include <asm/MC68VZ328.h>
#endif

/* assembler routines */
asmlinkage void system_call(void);
asmlinkage void buserr(void);
asmlinkage void trap(void);
asmlinkage void trap3(void);
asmlinkage void trap4(void);
asmlinkage void trap5(void);
asmlinkage void trap6(void);
asmlinkage void trap7(void);
asmlinkage void trap8(void);
asmlinkage void trap9(void);
asmlinkage void trap10(void);
asmlinkage void trap11(void);
asmlinkage void trap12(void);
asmlinkage void trap13(void);
asmlinkage void trap14(void);
asmlinkage void trap15(void);
asmlinkage void trap33(void);
asmlinkage void trap34(void);
asmlinkage void trap35(void);
asmlinkage void trap36(void);
asmlinkage void trap37(void);
asmlinkage void trap38(void);
asmlinkage void trap39(void);
asmlinkage void trap40(void);
asmlinkage void trap41(void);
asmlinkage void trap42(void);
asmlinkage void trap43(void);
asmlinkage void trap44(void);
asmlinkage void trap45(void);
asmlinkage void trap46(void);
asmlinkage void trap47(void);
asmlinkage irqreturn_t bad_interrupt(int, void *);
asmlinkage irqreturn_t inthandler(void);
asmlinkage irqreturn_t inthandler1(void);
asmlinkage irqreturn_t inthandler2(void);
asmlinkage irqreturn_t inthandler3(void);
asmlinkage irqreturn_t inthandler4(void);
asmlinkage irqreturn_t inthandler5(void);
asmlinkage irqreturn_t inthandler6(void);
asmlinkage irqreturn_t inthandler7(void);

extern e_vector *_ramvec;

/* The number of spurious interrupts */
volatile unsigned int num_spurious;

/*
 * This function should be called during kernel startup to initialize
 * the machine vector table.
 */
void __init init_vectors(void)
{
	int i;

	/* set up the vectors */
	for (i = 72; i < 256; ++i)
		_ramvec[i] = (e_vector) bad_interrupt;

	_ramvec[32] = system_call;

	_ramvec[65] = (e_vector) inthandler1;
	_ramvec[66] = (e_vector) inthandler2;
	_ramvec[67] = (e_vector) inthandler3;
	_ramvec[68] = (e_vector) inthandler4;
	_ramvec[69] = (e_vector) inthandler5;
	_ramvec[70] = (e_vector) inthandler6;
	_ramvec[71] = (e_vector) inthandler7;
 
	IVR = 0x40; /* Set DragonBall IVR (interrupt base) to 64 */

	/* turn off all interrupts */
	IMR = ~0;
}

/* The 68k family did not have a good way to determine the source
 * of interrupts until later in the family.  The EC000 core does
 * not provide the vector number on the stack, we vector everything
 * into one vector and look in the blasted mask register...
 * This code is designed to be fast, almost constant time, not clean!
 */
void process_int(int vec, struct pt_regs *fp)
{
	int irq;
	int mask;

	unsigned long pend = ISR;

	while (pend) {
		if (pend & 0x0000ffff) {
			if (pend & 0x000000ff) {
				if (pend & 0x0000000f) {
					mask = 0x00000001;
					irq = 0;
				} else {
					mask = 0x00000010;
					irq = 4;
				}
			} else {
				if (pend & 0x00000f00) {
					mask = 0x00000100;
					irq = 8;
				} else {
					mask = 0x00001000;
					irq = 12;
				}
			}
		} else {
			if (pend & 0x00ff0000) {
				if (pend & 0x000f0000) {
					mask = 0x00010000;
					irq = 16;
				} else {
					mask = 0x00100000;
					irq = 20;
				}
			} else {
				if (pend & 0x0f000000) {
					mask = 0x01000000;
					irq = 24;
				} else {
					mask = 0x10000000;
					irq = 28;
				}
			}
		}

		while (! (mask & pend)) {
			mask <<=1;
			irq++;
		}

		do_IRQ(irq, fp);
		pend &= ~mask;
	}
}

void enable_vector(unsigned int irq)
{
	IMR &= ~(1<<irq);
}

void disable_vector(unsigned int irq)
{
	IMR |= (1<<irq);
}

void ack_vector(unsigned int irq)
{
	/* Nothing needed */
}