diff options
| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-10-17 04:18:06 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-10-17 19:06:59 +0200 |
| commit | 78c2ae4a0ebd1ab46160e163bf4ca1b7e9463301 (patch) | |
| tree | 6d4050cb1013111c1fffd2ca7cd048738ec21c18 | |
| parent | ia64/pv_ops/xen: implement xen pv_iosapic_ops. (diff) | |
| download | linux-78c2ae4a0ebd1ab46160e163bf4ca1b7e9463301.tar.xz linux-78c2ae4a0ebd1ab46160e163bf4ca1b7e9463301.zip | |
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>
| -rw-r--r-- | arch/ia64/include/asm/xen/irq.h | 44 | ||||
| -rw-r--r-- | arch/ia64/kernel/nr-irqs.c | 1 |
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 @@ +/****************************************************************************** + * arch/ia64/include/asm/xen/irq.h + * + * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _ASM_IA64_XEN_IRQ_H +#define _ASM_IA64_XEN_IRQ_H + +/* + * The flat IRQ space is divided into two regions: + * 1. A one-to-one mapping of real physical IRQs. This space is only used + * if we have physical device-access privilege. This region is at the + * start of the IRQ space so that existing device drivers do not need + * to be modified to translate physical IRQ numbers into our IRQ space. + * 3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These + * are bound using the provided bind/unbind functions. + */ + +#define XEN_PIRQ_BASE 0 +#define XEN_NR_PIRQS 256 + +#define XEN_DYNIRQ_BASE (XEN_PIRQ_BASE + XEN_NR_PIRQS) +#define XEN_NR_DYNIRQS (NR_CPUS * 8) + +#define XEN_NR_IRQS (XEN_NR_PIRQS + XEN_NR_DYNIRQS) + +#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 @@ #include <linux/kbuild.h> #include <linux/threads.h> #include <asm/native/irq.h> +#include <asm/xen/irq.h> void foo(void) { |