Add AMD IOMMU support into hypervisor

Signed-off-by: Wei Wang <wei.wang2@amd.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/xen/include/asm-x86/amd-iommu.h b/xen/include/asm-x86/amd-iommu.h
new file mode 100644
index 0000000000..fb5c87f94d
--- /dev/null
+++ b/xen/include/asm-x86/amd-iommu.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2007 Advanced Micro Devices, Inc.
+ * Author: Leo Duran <leo.duran@amd.com>
+ * Author: Wei Wang <wei.wang2@amd.com> - adapted to xen
+ *
+ * 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_X86_64_AMD_IOMMU_H
+#define _ASM_X86_64_AMD_IOMMU_H
+
+#include <xen/init.h>
+#include <xen/types.h>
+#include <xen/spinlock.h>
+#include <xen/mm.h>
+#include <asm/hvm/svm/amd-iommu-defs.h>
+
+#define iommu_found()           (!list_empty(&amd_iommu_head))
+
+extern int amd_iommu_enabled;
+extern struct list_head amd_iommu_head;
+
+extern int __init amd_iommu_detect(void);
+
+struct table_struct {
+    void *buffer;
+    unsigned long entries;
+    unsigned long alloc_size;
+};
+
+struct amd_iommu {
+    struct list_head list;
+    spinlock_t lock; /* protect iommu */
+
+    int iotlb_support;
+    int ht_tunnel_support;
+    int not_present_cached;
+    u8  revision;
+
+    u8  root_bus;
+    u8  first_devfn;
+    u8  last_devfn;
+
+    int last_downstream_bus;
+    int downstream_bus_present[PCI_MAX_BUS_COUNT];
+
+    void *mmio_base;
+    unsigned long mmio_base_phys;
+
+    struct table_struct dev_table;
+    struct table_struct cmd_buffer;
+    u32 cmd_buffer_tail;
+
+    int exclusion_enabled;
+    unsigned long exclusion_base;
+    unsigned long exclusion_limit;
+};
+
+#endif /* _ASM_X86_64_AMD_IOMMU_H */