mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
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
2.9 KiB
C
125 lines
2.9 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
|
|
*/
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/iommu.h>
|
|
|
|
static struct iommu_ops *iommu_ops;
|
|
|
|
void register_iommu(struct iommu_ops *ops)
|
|
{
|
|
if (iommu_ops)
|
|
BUG();
|
|
|
|
iommu_ops = ops;
|
|
}
|
|
|
|
bool iommu_found(void)
|
|
{
|
|
return iommu_ops != NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_found);
|
|
|
|
struct iommu_domain *iommu_domain_alloc(void)
|
|
{
|
|
struct iommu_domain *domain;
|
|
int ret;
|
|
|
|
domain = kmalloc(sizeof(*domain), GFP_KERNEL);
|
|
if (!domain)
|
|
return NULL;
|
|
|
|
ret = iommu_ops->domain_init(domain);
|
|
if (ret)
|
|
goto out_free;
|
|
|
|
return domain;
|
|
|
|
out_free:
|
|
kfree(domain);
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_domain_alloc);
|
|
|
|
void iommu_domain_free(struct iommu_domain *domain)
|
|
{
|
|
iommu_ops->domain_destroy(domain);
|
|
kfree(domain);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_domain_free);
|
|
|
|
int iommu_attach_device(struct iommu_domain *domain, struct device *dev)
|
|
{
|
|
return iommu_ops->attach_dev(domain, dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_attach_device);
|
|
|
|
void iommu_detach_device(struct iommu_domain *domain, struct device *dev)
|
|
{
|
|
iommu_ops->detach_dev(domain, dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_detach_device);
|
|
|
|
phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
|
|
unsigned long iova)
|
|
{
|
|
return iommu_ops->iova_to_phys(domain, iova);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_iova_to_phys);
|
|
|
|
int iommu_domain_has_cap(struct iommu_domain *domain,
|
|
unsigned long cap)
|
|
{
|
|
return iommu_ops->domain_has_cap(domain, cap);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_domain_has_cap);
|
|
|
|
int iommu_map(struct iommu_domain *domain, unsigned long iova,
|
|
phys_addr_t paddr, int gfp_order, int prot)
|
|
{
|
|
unsigned long invalid_mask;
|
|
size_t size;
|
|
|
|
size = 0x1000UL << gfp_order;
|
|
invalid_mask = size - 1;
|
|
|
|
BUG_ON((iova | paddr) & invalid_mask);
|
|
|
|
return iommu_ops->map(domain, iova, paddr, gfp_order, prot);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_map);
|
|
|
|
int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order)
|
|
{
|
|
unsigned long invalid_mask;
|
|
size_t size;
|
|
|
|
size = 0x1000UL << gfp_order;
|
|
invalid_mask = size - 1;
|
|
|
|
BUG_ON(iova & invalid_mask);
|
|
|
|
return iommu_ops->unmap(domain, iova, gfp_order);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iommu_unmap);
|