Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / include / xen / grant_table.h

diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 9a731706a0165404445972903e4cebf1695e784c..b1fab6b5b3efd3881af72b4a87260c53e0332443 100644 (file)
--- a/include/xen/grant_table.h
+++ b/include/xen/grant_table.h
@@ -37,10 +37,16 @@
 #ifndef __ASM_GNTTAB_H__
 #define __ASM_GNTTAB_H__
 
-#include <asm/xen/hypervisor.h>
+#include <asm/page.h>
+
+#include <xen/interface/xen.h>
 #include <xen/interface/grant_table.h>
+
+#include <asm/xen/hypervisor.h>
 #include <asm/xen/grant_table.h>
 
+#include <xen/features.h>
+
 /* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */
 #define NR_GRANT_FRAMES 4
 
@@ -107,6 +113,37 @@ void gnttab_grant_foreign_access_ref(grant_ref_t ref, domid_t domid,
 void gnttab_grant_foreign_transfer_ref(grant_ref_t, domid_t domid,
                                       unsigned long pfn);
 
+static inline void
+gnttab_set_map_op(struct gnttab_map_grant_ref *map, phys_addr_t addr,
+                 uint32_t flags, grant_ref_t ref, domid_t domid)
+{
+       if (flags & GNTMAP_contains_pte)
+               map->host_addr = addr;
+       else if (xen_feature(XENFEAT_auto_translated_physmap))
+               map->host_addr = __pa(addr);
+       else
+               map->host_addr = addr;
+
+       map->flags = flags;
+       map->ref = ref;
+       map->dom = domid;
+}
+
+static inline void
+gnttab_set_unmap_op(struct gnttab_unmap_grant_ref *unmap, phys_addr_t addr,
+                   uint32_t flags, grant_handle_t handle)
+{
+       if (flags & GNTMAP_contains_pte)
+               unmap->host_addr = addr;
+       else if (xen_feature(XENFEAT_auto_translated_physmap))
+               unmap->host_addr = __pa(addr);
+       else
+               unmap->host_addr = addr;
+
+       unmap->handle = handle;
+       unmap->dev_bus_addr = 0;
+}
+
 int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
                           unsigned long max_nr_gframes,
                           struct grant_entry **__shared);
@@ -118,4 +155,9 @@ unsigned int gnttab_max_grant_frames(void);
 
 #define gnttab_map_vaddr(map) ((void *)(map.host_virt_addr))
 
+int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
+                   struct page **pages, unsigned int count);
+int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops,
+                     struct page **pages, unsigned int count);
+
 #endif /* __ASM_GNTTAB_H__ */