diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2018-12-10 09:58:57 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-12-11 10:45:57 +0100 |
| commit | 4f2ed183cfebf42b29ed8fe442169de97bc0fe61 (patch) | |
| tree | 6879596b09b13ad63dfd3c71da01aee71ac12314 /drivers/iommu | |
| parent | 0bbeb01a4fafbf8422e5c8882d461d6ac4f71e15 (diff) | |
iommu/vt-d: Move page table helpers into header
So that they could also be used in other source files.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Cc: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 5552a1aaf5ea..d55254abd5ff 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -291,49 +291,6 @@ static inline void context_clear_entry(struct context_entry *context) } /* - * 0: readable - * 1: writable - * 2-6: reserved - * 7: super page - * 8-10: available - * 11: snoop behavior - * 12-63: Host physcial address - */ -struct dma_pte { - u64 val; -}; - -static inline void dma_clear_pte(struct dma_pte *pte) -{ - pte->val = 0; -} - -static inline u64 dma_pte_addr(struct dma_pte *pte) -{ -#ifdef CONFIG_64BIT - return pte->val & VTD_PAGE_MASK; -#else - /* Must have a full atomic 64-bit read */ - return __cmpxchg64(&pte->val, 0ULL, 0ULL) & VTD_PAGE_MASK; -#endif -} - -static inline bool dma_pte_present(struct dma_pte *pte) -{ - return (pte->val & 3) != 0; -} - -static inline bool dma_pte_superpage(struct dma_pte *pte) -{ - return (pte->val & DMA_PTE_LARGE_PAGE); -} - -static inline int first_pte_in_page(struct dma_pte *pte) -{ - return !((unsigned long)pte & ~VTD_PAGE_MASK); -} - -/* * This domain is a statically identity mapping domain. * 1. This domain creats a static 1:1 mapping to all usable memory. * 2. It maps to each iommu if successful. |