/* * 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/list.h>#include <xen/spinlock.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 */