aboutsummaryrefslogtreecommitdiffstats
path: root/include/xen/grant_table.h
diff options
context:
space:
mode:
authorIan Campbell <ian.campbell@citrix.com>2009-02-09 12:05:49 -0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-01-11 14:30:34 -0500
commitf07745325cbd93afc5d8bcf7539a063d33134075 (patch)
treee75f7d15f3559e00708bfdd33b67fdd1637eac69 /include/xen/grant_table.h
parentLinux 2.6.37 (diff)
downloadlinux-dev-f07745325cbd93afc5d8bcf7539a063d33134075.tar.xz
linux-dev-f07745325cbd93afc5d8bcf7539a063d33134075.zip
xen: define gnttab_set_map_op/unmap_op
Impact: hypercall definitions These functions populate the gnttab data structures used by the granttab map and unmap ops and are used in the backend drivers. Originally xen-unstable.hg 9625:c3bb51c443a7 [ Include Stefano's fix for phys_addr_t ] Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen/grant_table.h')
-rw-r--r--include/xen/grant_table.h39
1 files changed, 38 insertions, 1 deletions
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 9a731706a016..1821aa103d82 100644
--- 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);