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Merge branch 'iommu/page-sizes' into x86/amd

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Conflicts:
	drivers/iommu/amd_iommu.c
This commit is contained in:
Joerg Roedel
2011-12-14 12:41:31 +01:00
parent 175d614673 6c274d1cd5
commit a06ec394c9
8 changed files with 203 additions and 68 deletions
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32
drivers/iommu/amd_iommu.c
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@@ -44,6 +44,24 @@
#define LOOP_TIMEOUT 100000
/*
* This bitmap is used to advertise the page sizes our hardware support
* to the IOMMU core, which will then use this information to split
* physically contiguous memory regions it is mapping into page sizes
* that we support.
*
* Traditionally the IOMMU core just handed us the mappings directly,
* after making sure the size is an order of a 4KiB page and that the
* mapping has natural alignment.
*
* To retain this behavior, we currently advertise that we support
* all page sizes that are an order of 4KiB.
*
* If at some point we'd like to utilize the IOMMU core's new behavior,
* we could change this to advertise the real page sizes we support.
*/
#define AMD_IOMMU_PGSIZES (~0xFFFUL)
static DEFINE_RWLOCK(amd_iommu_devtable_lock);
/* A list of preallocated protection domains */
@@ -3093,9 +3111,8 @@ static int amd_iommu_attach_device(struct iommu_domain *dom,
}
static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
phys_addr_t paddr, int gfp_order, int iommu_prot)
phys_addr_t paddr, size_t page_size, int iommu_prot)
{
unsigned long page_size = 0x1000UL << gfp_order;
struct protection_domain *domain = dom->priv;
int prot = 0;
int ret;
@@ -3115,24 +3132,22 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
return ret;
}
static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
int gfp_order)
static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
size_t page_size)
{
struct protection_domain *domain = dom->priv;
unsigned long page_size, unmap_size;
size_t unmap_size;
if (domain->mode == PAGE_MODE_NONE)
return -EINVAL;
page_size = 0x1000UL << gfp_order;
mutex_lock(&domain->api_lock);
unmap_size = iommu_unmap_page(domain, iova, page_size);
mutex_unlock(&domain->api_lock);
domain_flush_tlb_pde(domain);
return get_order(unmap_size);
return unmap_size;
}
static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
@@ -3182,6 +3197,7 @@ static struct iommu_ops amd_iommu_ops = {
.unmap = amd_iommu_unmap,
.iova_to_phys = amd_iommu_iova_to_phys,
.domain_has_cap = amd_iommu_domain_has_cap,
.pgsize_bitmap = AMD_IOMMU_PGSIZES,
};
/*****************************************************************************