From 622ba12a4c2148999bda9b891bfd0c6ddcb6c57e Mon Sep 17 00:00:00 2001 From: Mark McLoughlin Date: Thu, 20 Nov 2008 15:49:46 +0000 Subject: intel-iommu: move DMA PTE defs out of dma_remapping.h DMA_PTE_READ/WRITE are needed by kvm. Signed-off-by: Mark McLoughlin Signed-off-by: David Woodhouse --- drivers/pci/intel-iommu.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 9d06f4bb6b5e..26c5402b6f7c 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -128,6 +128,28 @@ struct context_entry { do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0) #define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0) +/* + * 0: readable + * 1: writable + * 2-6: reserved + * 7: super page + * 8-11: available + * 12-63: Host physcial address + */ +struct dma_pte { + u64 val; +}; +#define dma_clear_pte(p) do {(p).val = 0;} while (0) + +#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0) +#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0) +#define dma_set_pte_prot(p, prot) \ + do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0) +#define dma_pte_addr(p) ((p).val & VTD_PAGE_MASK) +#define dma_set_pte_addr(p, addr) do {\ + (p).val |= ((addr) & VTD_PAGE_MASK); } while (0) +#define dma_pte_present(p) (((p).val & 3) != 0) + static void flush_unmaps_timeout(unsigned long data); DEFINE_TIMER(unmap_timer, flush_unmaps_timeout, 0, 0); -- cgit v1.2.3