ea14e6a04409636c62813048504cf77e3ef57949
[linux-2.6.git] / arch / ia64 / kernel / irq_lsapic.c
1 /*
2  * LSAPIC Interrupt Controller
3  *
4  * This takes care of interrupts that are generated by the CPU's
5  * internal Streamlined Advanced Programmable Interrupt Controller
6  * (LSAPIC), such as the ITC and IPI interrupts.
7     *
8  * Copyright (C) 1999 VA Linux Systems
9  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
10  * Copyright (C) 2000 Hewlett-Packard Co
11  * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
12  */
13
14 #include <linux/sched.h>
15 #include <linux/irq.h>
16
17 static unsigned int
18 lsapic_noop_startup (unsigned int irq)
19 {
20         return 0;
21 }
22
23 static void
24 lsapic_noop (unsigned int irq)
25 {
26         /* nuthing to do... */
27 }
28
29 struct hw_interrupt_type irq_type_ia64_lsapic = {
30         .typename =     "LSAPIC",
31         .startup =      lsapic_noop_startup,
32         .shutdown =     lsapic_noop,
33         .enable =       lsapic_noop,
34         .disable =      lsapic_noop,
35         .ack =          lsapic_noop,
36         .end =          lsapic_noop
37 };