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iommu/fsl: Add the window permission flag as a parameter to iommu_window_enable API. 

Each iommu window can have access permissions associated with it. Extended the
window_enable API to incorporate window access permissions.

In case of PAMU each window can have its specific set of permissions.

Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
hifive-unleashed-5.1
Varun Sethi 2013-03-29 01:24:00 +05:30 committed by Joerg Roedel
parent bb5547acfc
commit 80f97f0f73
2 changed files with 7 additions and 5 deletions
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5
drivers/iommu/iommu.c
View File

@ -853,12 +853,13 @@ EXPORT_SYMBOL_GPL(iommu_unmap);
int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size)
phys_addr_t paddr, u64 size, int prot)
{
if (unlikely(domain->ops->domain_window_enable == NULL))
return -ENODEV;
return domain->ops->domain_window_enable(domain, wnd_nr, paddr, size);
return domain->ops->domain_window_enable(domain, wnd_nr, paddr, size,
prot);
}
EXPORT_SYMBOL_GPL(iommu_domain_window_enable);

7
include/linux/iommu.h
View File

@ -104,7 +104,7 @@ struct iommu_ops {
/* Window handling functions */
int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size);
phys_addr_t paddr, u64 size, int prot);
void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
/* Set the numer of window per domain */
int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count);
@ -169,7 +169,8 @@ extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr,
/* Window handling function prototypes */
extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t offset, u64 size);
phys_addr_t offset, u64 size,
int prot);
extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr);
/**
* report_iommu_fault() - report about an IOMMU fault to the IOMMU framework
@ -255,7 +256,7 @@ static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
static inline int iommu_domain_window_enable(struct iommu_domain *domain,
u32 wnd_nr, phys_addr_t paddr,
u64 size)
u64 size, int prot)
{
return -ENODEV;
}