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/*
* 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 */
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