1 files changed, 99 insertions, 0 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
new file mode 100644
index 000000000..5f26962ef
--- /dev/null
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Author: Joerg Roedel <joerg.roedel@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * 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
+ *
+ * This header file contains the interface of the interrupt remapping code to
+ * the x86 interrupt management code.
+ */
+
+#ifndef __X86_IRQ_REMAPPING_H
+#define __X86_IRQ_REMAPPING_H
+
+#include <asm/irqdomain.h>
+#include <asm/hw_irq.h>
+#include <asm/io_apic.h>
+
+struct msi_msg;
+struct irq_alloc_info;
+
+enum irq_remap_cap {
+	IRQ_POSTING_CAP = 0,
+};
+
+enum {
+	IRQ_REMAP_XAPIC_MODE,
+	IRQ_REMAP_X2APIC_MODE,
+};
+
+struct vcpu_data {
+	u64 pi_desc_addr;	/* Physical address of PI Descriptor */
+	u32 vector;		/* Guest vector of the interrupt */
+};
+
+#ifdef CONFIG_IRQ_REMAP
+
+extern bool irq_remapping_cap(enum irq_remap_cap cap);
+extern void set_irq_remapping_broken(void);
+extern int irq_remapping_prepare(void);
+extern int irq_remapping_enable(void);
+extern void irq_remapping_disable(void);
+extern int irq_remapping_reenable(int);
+extern int irq_remap_enable_fault_handling(void);
+extern void panic_if_irq_remap(const char *msg);
+
+extern struct irq_domain *
+irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info);
+extern struct irq_domain *
+irq_remapping_get_irq_domain(struct irq_alloc_info *info);
+
+/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
+extern struct irq_domain *
+arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id);
+
+/* Get parent irqdomain for interrupt remapping irqdomain */
+static inline struct irq_domain *arch_get_ir_parent_domain(void)
+{
+	return x86_vector_domain;
+}
+
+#else  /* CONFIG_IRQ_REMAP */
+
+static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; }
+static inline void set_irq_remapping_broken(void) { }
+static inline int irq_remapping_prepare(void) { return -ENODEV; }
+static inline int irq_remapping_enable(void) { return -ENODEV; }
+static inline void irq_remapping_disable(void) { }
+static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
+static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
+
+static inline void panic_if_irq_remap(const char *msg)
+{
+}
+
+static inline struct irq_domain *
+irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
+{
+	return NULL;
+}
+
+static inline struct irq_domain *
+irq_remapping_get_irq_domain(struct irq_alloc_info *info)
+{
+	return NULL;
+}
+
+#endif /* CONFIG_IRQ_REMAP */
+#endif /* __X86_IRQ_REMAPPING_H */