/* * 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_PROTO_H#define _ASM_X86_64_AMD_IOMMU_PROTO_H#include <asm/amd-iommu.h>#define for_each_amd_iommu(amd_iommu) \    list_for_each_entry(amd_iommu, \        &amd_iommu_head, list)#define DMA_32BIT_MASK  0x00000000ffffffffULL#define PAGE_ALIGN(addr)    (((addr) + PAGE_SIZE - 1) & PAGE_MASK)#define PAGE_SHIFT_4K                   (12)#define PAGE_SIZE_4K                    (1UL << PAGE_SHIFT_4K)#define PAGE_MASK_4K                    (((u64)-1) << PAGE_SHIFT_4K)typedef int (*iommu_detect_callback_ptr_t)(u8 bus, u8 dev, u8 func, u8 cap_ptr);/* amd-iommu-detect functions */int __init scan_for_iommu(iommu_detect_callback_ptr_t iommu_detect_callback);int __init get_iommu_capabilities(u8 bus, u8 dev, u8 func, u8 cap_ptr,           struct amd_iommu *iommu);int __init get_iommu_last_downstream_bus(struct amd_iommu *iommu);/* amd-iommu-init functions */int __init map_iommu_mmio_region(struct amd_iommu *iommu);void __init unmap_iommu_mmio_region(struct amd_iommu *iommu);void __init register_iommu_dev_table_in_mmio_space(struct amd_iommu *iommu);void __init register_iommu_cmd_buffer_in_mmio_space(struct amd_iommu *iommu);void __init enable_iommu(struct amd_iommu *iommu);/* mapping functions */int amd_iommu_map_page(struct domain *d, unsigned long gfn,        unsigned long mfn);int amd_iommu_unmap_page(struct domain *d, unsigned long gfn);/* device table functions */void amd_iommu_set_dev_table_entry(u32 *dte,        u64 root_ptr, u16 domain_id, u8 paging_mode);/* send cmd to iommu */int send_iommu_command(struct amd_iommu *iommu, u32 cmd[]);/* iommu domain funtions */int amd_iommu_domain_init(struct domain *domain);void amd_iommu_setup_domain_device(struct domain *domain,    struct amd_iommu *iommu, int requestor_id);/* find iommu for bdf */struct amd_iommu *find_iommu_for_device(int bus, int devfn);static inline u32 get_field_from_reg_u32(u32 reg_value, u32 mask, u32 shift){    u32 field;    field = (reg_value & mask) >> shift;    return field;}static inline u32 set_field_in_reg_u32(u32 field, u32 reg_value,        u32 mask, u32 shift, u32 *reg){    reg_value &= ~mask;    reg_value |= (field << shift) & mask;    if (reg)        *reg = reg_value;    return reg_value;}#endif /* _ASM_X86_64_AMD_IOMMU_PROTO_H */