[Xen-ia64-devel] [PATCH 19/23] ia64/pv_ops/xen: define the nubmer of irqs which xen needs.

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

define include/asm-ia64/xen/irq.h to define the number of
irqs which xen needs.

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
 include/asm-ia64/xen/irq.h |   44 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 44 insertions(+), 0 deletions(-)
 create mode 100644 include/asm-ia64/xen/irq.h

diff --git a/include/asm-ia64/xen/irq.h b/include/asm-ia64/xen/irq.h
new file mode 100644
index 0000000..ac7db43
--- /dev/null
+++ b/include/asm-ia64/xen/irq.h
@@ -0,0 +1,44 @@
+/******************************************************************************
+ * include/asm-ia64/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         (CONFIG_NR_CPUS * 8)
+
+#define XEN_NR_IRQS            (XEN_NR_PIRQS + XEN_NR_DYNIRQS)
+
+#endif /* _ASM_IA64_XEN_IRQ_H */
-- 
1.5.3


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