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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-10-16 22:18:06 -0400
committerTony Luck <tony.luck@intel.com>2008-10-17 13:06:59 -0400
commit78c2ae4a0ebd1ab46160e163bf4ca1b7e9463301 (patch)
tree6d4050cb1013111c1fffd2ca7cd048738ec21c18 /arch/ia64
parentbcdd48739d1336332e4086c9e1c9f225290b8194 (diff)
ia64/pv_ops/xen: define the nubmer of irqs which xen needs.
define arch/ia64/include/asm/xen/irq.h to define the number of irqs which xen needs. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/include/asm/xen/irq.h44
-rw-r--r--arch/ia64/kernel/nr-irqs.c1
2 files changed, 45 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/xen/irq.h b/arch/ia64/include/asm/xen/irq.h
new file mode 100644
index 000000000000..a90450983003
--- /dev/null
+++ b/arch/ia64/include/asm/xen/irq.h
@@ -0,0 +1,44 @@
1/******************************************************************************
2 * arch/ia64/include/asm/xen/irq.h
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#ifndef _ASM_IA64_XEN_IRQ_H
24#define _ASM_IA64_XEN_IRQ_H
25
26/*
27 * The flat IRQ space is divided into two regions:
28 * 1. A one-to-one mapping of real physical IRQs. This space is only used
29 * if we have physical device-access privilege. This region is at the
30 * start of the IRQ space so that existing device drivers do not need
31 * to be modified to translate physical IRQ numbers into our IRQ space.
32 * 3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These
33 * are bound using the provided bind/unbind functions.
34 */
35
36#define XEN_PIRQ_BASE 0
37#define XEN_NR_PIRQS 256
38
39#define XEN_DYNIRQ_BASE (XEN_PIRQ_BASE + XEN_NR_PIRQS)
40#define XEN_NR_DYNIRQS (NR_CPUS * 8)
41
42#define XEN_NR_IRQS (XEN_NR_PIRQS + XEN_NR_DYNIRQS)
43
44#endif /* _ASM_IA64_XEN_IRQ_H */
diff --git a/arch/ia64/kernel/nr-irqs.c b/arch/ia64/kernel/nr-irqs.c
index 8273afc32db8..ee564575148e 100644
--- a/arch/ia64/kernel/nr-irqs.c
+++ b/arch/ia64/kernel/nr-irqs.c
@@ -10,6 +10,7 @@
10#include <linux/kbuild.h> 10#include <linux/kbuild.h>
11#include <linux/threads.h> 11#include <linux/threads.h>
12#include <asm/native/irq.h> 12#include <asm/native/irq.h>
13#include <asm/xen/irq.h>
13 14
14void foo(void) 15void foo(void)
15{ 16{