summaryrefslogtreecommitdiffstats
path: root/include/xen/grant_table.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/xen/grant_table.h')
-rw-r--r--include/xen/grant_table.h30
1 files changed, 29 insertions, 1 deletions
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 34b1379f9777..dd6c7a32ee32 100644
--- a/include/xen/grant_table.h
+++ b/include/xen/grant_table.h
@@ -84,6 +84,24 @@ int gnttab_resume(void);
int gnttab_grant_foreign_access(domid_t domid, unsigned long frame,
int readonly);
+int gnttab_grant_foreign_access_subpage(domid_t domid, unsigned long frame,
+ int flags, unsigned page_off,
+ unsigned length);
+int gnttab_grant_foreign_access_trans(domid_t domid, int flags,
+ domid_t trans_domid,
+ grant_ref_t trans_gref);
+
+/*
+ * Are sub-page grants available on this version of Xen? Returns true if they
+ * are, and false if they're not.
+ */
+bool gnttab_subpage_grants_available(void);
+
+/*
+ * Are transitive grants available on this version of Xen? Returns true if they
+ * are, and false if they're not.
+ */
+bool gnttab_trans_grants_available(void);
/*
* End access through the given grant reference, iff the grant entry is no
@@ -130,6 +148,13 @@ void gnttab_cancel_free_callback(struct gnttab_free_callback *callback);
void gnttab_grant_foreign_access_ref(grant_ref_t ref, domid_t domid,
unsigned long frame, int readonly);
+int gnttab_grant_foreign_access_subpage_ref(grant_ref_t ref, domid_t domid,
+ unsigned long frame, int flags,
+ unsigned page_off,
+ unsigned length);
+int gnttab_grant_foreign_access_trans_ref(grant_ref_t ref, domid_t domid,
+ int flags, domid_t trans_domid,
+ grant_ref_t trans_gref);
/* Give access to the first 4K of the page */
static inline void gnttab_page_grant_foreign_access_ref_one(
@@ -174,10 +199,13 @@ gnttab_set_unmap_op(struct gnttab_unmap_grant_ref *unmap, phys_addr_t addr,
unmap->dev_bus_addr = 0;
}
-int arch_gnttab_init(unsigned long nr_shared);
+int arch_gnttab_init(unsigned long nr_shared, unsigned long nr_status);
int arch_gnttab_map_shared(xen_pfn_t *frames, unsigned long nr_gframes,
unsigned long max_nr_gframes,
void **__shared);
+int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
+ unsigned long max_nr_gframes,
+ grant_status_t **__shared);
void arch_gnttab_unmap(void *shared, unsigned long nr_gframes);
struct grant_frames {