12c7389abe
These functions are not longer used and can be removed
savely. There functionality is now provided by the
iommu_{un}map functions which are also capable of multiple
page sizes.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
|
|
* Copyright (C) 2007-2008 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
|
|
*/
|
|
|
|
#ifndef __LINUX_IOMMU_H
|
|
#define __LINUX_IOMMU_H
|
|
|
|
#define IOMMU_READ (1)
|
|
#define IOMMU_WRITE (2)
|
|
#define IOMMU_CACHE (4) /* DMA cache coherency */
|
|
|
|
struct device;
|
|
|
|
struct iommu_domain {
|
|
void *priv;
|
|
};
|
|
|
|
#define IOMMU_CAP_CACHE_COHERENCY 0x1
|
|
|
|
struct iommu_ops {
|
|
int (*domain_init)(struct iommu_domain *domain);
|
|
void (*domain_destroy)(struct iommu_domain *domain);
|
|
int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
|
|
void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
|
|
int (*map)(struct iommu_domain *domain, unsigned long iova,
|
|
phys_addr_t paddr, int gfp_order, int prot);
|
|
int (*unmap)(struct iommu_domain *domain, unsigned long iova,
|
|
int gfp_order);
|
|
phys_addr_t (*iova_to_phys)(struct iommu_domain *domain,
|
|
unsigned long iova);
|
|
int (*domain_has_cap)(struct iommu_domain *domain,
|
|
unsigned long cap);
|
|
};
|
|
|
|
#ifdef CONFIG_IOMMU_API
|
|
|
|
extern void register_iommu(struct iommu_ops *ops);
|
|
extern bool iommu_found(void);
|
|
extern struct iommu_domain *iommu_domain_alloc(void);
|
|
extern void iommu_domain_free(struct iommu_domain *domain);
|
|
extern int iommu_attach_device(struct iommu_domain *domain,
|
|
struct device *dev);
|
|
extern void iommu_detach_device(struct iommu_domain *domain,
|
|
struct device *dev);
|
|
extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
|
|
phys_addr_t paddr, int gfp_order, int prot);
|
|
extern int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
|
|
int gfp_order);
|
|
extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
|
|
unsigned long iova);
|
|
extern int iommu_domain_has_cap(struct iommu_domain *domain,
|
|
unsigned long cap);
|
|
|
|
#else /* CONFIG_IOMMU_API */
|
|
|
|
static inline void register_iommu(struct iommu_ops *ops)
|
|
{
|
|
}
|
|
|
|
static inline bool iommu_found(void)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline struct iommu_domain *iommu_domain_alloc(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void iommu_domain_free(struct iommu_domain *domain)
|
|
{
|
|
}
|
|
|
|
static inline int iommu_attach_device(struct iommu_domain *domain,
|
|
struct device *dev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void iommu_detach_device(struct iommu_domain *domain,
|
|
struct device *dev)
|
|
{
|
|
}
|
|
|
|
static inline int iommu_map(struct iommu_domain *domain, unsigned long iova,
|
|
phys_addr_t paddr, int gfp_order, int prot)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
|
|
int gfp_order)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
|
|
unsigned long iova)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int domain_has_cap(struct iommu_domain *domain,
|
|
unsigned long cap)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_IOMMU_API */
|
|
|
|
#endif /* __LINUX_IOMMU_H */
|