Commit 80f97f0f authored by Varun Sethi's avatar Varun Sethi Committed by Joerg Roedel
Browse files

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: default avatarVarun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: default avatarJoerg Roedel <joro@8bytes.org>
parent bb5547ac

drivers/iommu/iommu.c

+3 −2
Original line number Diff line number Diff line
@@ -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);

include/linux/iommu.h

+4 −3
Original line number Diff line number Diff line
@@ -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;

}