2 * Copyright (C) 2002 Momentum Computer, Inc.
3 * Author: Matthew Dharm, mdharm@momenco.com
6 * Copyright (C) 2000 RidgeRun, Inc.
7 * Author: RidgeRun, Inc.
8 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
10 * Copyright 2001 MontaVista Software Inc.
11 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
13 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
26 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
35 #include <linux/init.h>
36 #include <linux/interrupt.h>
37 #include <linux/signal.h>
38 #include <linux/types.h>
39 #include <asm/irq_cpu.h>
40 #include <asm/mipsregs.h>
42 extern asmlinkage void jaguar_handle_int(void);
44 static struct irqaction cascade_mv64340 = {
45 no_action, SA_INTERRUPT, CPU_MASK_NONE, "MV64340-Cascade", NULL, NULL
48 void __init arch_init_irq(void)
51 * Clear all of the interrupts while we change the able around a bit.
52 * int-handler is not on bootstrap
54 clear_c0_status(ST0_IM);
56 /* Sets the first-level interrupt dispatcher. */
57 set_except_vector(0, jaguar_handle_int);
61 /* set up the cascading interrupts */
62 setup_irq(8, &cascade_mv64340);
66 set_c0_status(ST0_IM);