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 */ 45