diff options
Diffstat (limited to 'drivers/pci/iova.h')
| -rw-r--r-- | drivers/pci/iova.h | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/drivers/pci/iova.h b/drivers/pci/iova.h index ae3028d..d521b5b 100644 --- a/drivers/pci/iova.h +++ b/drivers/pci/iova.h @@ -15,22 +15,9 @@ #include <linux/rbtree.h> #include <linux/dma-mapping.h> -/* - * We need a fixed PAGE_SIZE of 4K irrespective of - * arch PAGE_SIZE for IOMMU page tables. - */ -#define PAGE_SHIFT_4K (12) -#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K) -#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K) -#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K) - /* IO virtual address start page frame number */ #define IOVA_START_PFN (1) -#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K) -#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK) -#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK) - /* iova structure */ struct iova { struct rb_node node; @@ -44,6 +31,7 @@ struct iova_domain { spinlock_t iova_rbtree_lock; /* Lock to protect update of rbtree */ struct rb_root rbroot; /* iova domain rbtree root */ struct rb_node *cached32_node; /* Save last alloced node */ + unsigned long dma_32bit_pfn; }; struct iova *alloc_iova_mem(void); @@ -56,7 +44,7 @@ struct iova *alloc_iova(struct iova_domain *iovad, unsigned long size, struct iova *reserve_iova(struct iova_domain *iovad, unsigned long pfn_lo, unsigned long pfn_hi); void copy_reserved_iova(struct iova_domain *from, struct iova_domain *to); -void init_iova_domain(struct iova_domain *iovad); +void init_iova_domain(struct iova_domain *iovad, unsigned long pfn_32bit); struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn); void put_iova_domain(struct iova_domain *iovad); |