Isaku Yamahata | 78c2ae4 | 2008-10-17 11:18:06 +0900 | [diff] [blame] | 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 */ |