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path: root/drivers/iommu/iommufd/io_pagetable.h
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Diffstat (limited to 'drivers/iommu/iommufd/io_pagetable.h')
-rw-r--r--drivers/iommu/iommufd/io_pagetable.h26
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/iommu/iommufd/io_pagetable.h b/drivers/iommu/iommufd/io_pagetable.h
index c61d74471684..10c928a9a463 100644
--- a/drivers/iommu/iommufd/io_pagetable.h
+++ b/drivers/iommu/iommufd/io_pagetable.h
@@ -173,6 +173,12 @@ enum {
IOPT_PAGES_ACCOUNT_NONE = 0,
IOPT_PAGES_ACCOUNT_USER = 1,
IOPT_PAGES_ACCOUNT_MM = 2,
+ IOPT_PAGES_ACCOUNT_MODE_NUM = 3,
+};
+
+enum iopt_address_type {
+ IOPT_ADDRESS_USER = 0,
+ IOPT_ADDRESS_FILE = 1,
};
/*
@@ -195,7 +201,14 @@ struct iopt_pages {
struct task_struct *source_task;
struct mm_struct *source_mm;
struct user_struct *source_user;
- void __user *uptr;
+ enum iopt_address_type type;
+ union {
+ void __user *uptr; /* IOPT_ADDRESS_USER */
+ struct { /* IOPT_ADDRESS_FILE */
+ struct file *file;
+ unsigned long start;
+ };
+ };
bool writable:1;
u8 account_mode;
@@ -206,8 +219,10 @@ struct iopt_pages {
struct rb_root_cached domains_itree;
};
-struct iopt_pages *iopt_alloc_pages(void __user *uptr, unsigned long length,
- bool writable);
+struct iopt_pages *iopt_alloc_user_pages(void __user *uptr,
+ unsigned long length, bool writable);
+struct iopt_pages *iopt_alloc_file_pages(struct file *file, unsigned long start,
+ unsigned long length, bool writable);
void iopt_release_pages(struct kref *kref);
static inline void iopt_put_pages(struct iopt_pages *pages)
{
@@ -238,4 +253,9 @@ struct iopt_pages_access {
unsigned int users;
};
+struct pfn_reader_user;
+
+int iopt_pages_update_pinned(struct iopt_pages *pages, unsigned long npages,
+ bool inc, struct pfn_reader_user *user);
+
#endif