diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2017-04-12 21:59:01 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-12 21:59:01 -0700 |
| commit | bfca9acf1a5df0ff98fbf47e363adb48612bb7ec (patch) | |
| tree | a50287c88fdc60a73912d205d7bce41b7af53827 /include/linux/iommu.h | |
| parent | 92a3fa075d3d2716b9c662814540f1d660cbf2f5 (diff) | |
| parent | 11e63f6d920d6f2dfd3cd421e939a4aec9a58dcd (diff) | |
Merge branch 'for-4.11/libnvdimm' into for-4.12/dax
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 6a6de187ddc0..2e4de0deee53 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -125,9 +125,16 @@ enum iommu_attr { }; /* These are the possible reserved region types */ -#define IOMMU_RESV_DIRECT (1 << 0) -#define IOMMU_RESV_RESERVED (1 << 1) -#define IOMMU_RESV_MSI (1 << 2) +enum iommu_resv_type { + /* Memory regions which must be mapped 1:1 at all times */ + IOMMU_RESV_DIRECT, + /* Arbitrary "never map this or give it to a device" address ranges */ + IOMMU_RESV_RESERVED, + /* Hardware MSI region (untranslated) */ + IOMMU_RESV_MSI, + /* Software-managed MSI translation window */ + IOMMU_RESV_SW_MSI, +}; /** * struct iommu_resv_region - descriptor for a reserved memory region @@ -142,7 +149,7 @@ struct iommu_resv_region { phys_addr_t start; size_t length; int prot; - int type; + enum iommu_resv_type type; }; #ifdef CONFIG_IOMMU_API @@ -288,7 +295,8 @@ extern void iommu_get_resv_regions(struct device *dev, struct list_head *list); extern void iommu_put_resv_regions(struct device *dev, struct list_head *list); extern int iommu_request_dm_for_dev(struct device *dev); extern struct iommu_resv_region * -iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, int type); +iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot, + enum iommu_resv_type type); extern int iommu_get_group_resv_regions(struct iommu_group *group, struct list_head *head); |