aboutsummaryrefslogtreecommitdiffstats
path: root/include/xen/xen-ops.h
diff options
context:
space:
mode:
authorAlex Nixon <alex.nixon@citrix.com>2009-02-09 12:05:46 -0800
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-06-07 15:37:53 -0400
commit08bbc9da92f7e44b9c208c6a1adba70c403b255e (patch)
tree75c6cf9422e03990d1fd280b631d00ea4d4dbe4b /include/xen/xen-ops.h
parent19001c8c5bfa032ed45b10dfe48e355f5df88c61 (diff)
downloadmrst-s0i3-test-08bbc9da92f7e44b9c208c6a1adba70c403b255e.tar.gz
mrst-s0i3-test-08bbc9da92f7e44b9c208c6a1adba70c403b255e.tar.xz
mrst-s0i3-test-08bbc9da92f7e44b9c208c6a1adba70c403b255e.zip
xen: Add xen_create_contiguous_region
A memory region must be physically contiguous in order to be accessed through DMA. This patch adds xen_create_contiguous_region, which ensures a region of contiguous virtual memory is also physically contiguous. Based on Stephen Tweedie's port of the 2.6.18-xen version. Remove contiguous_bitmap[] as it's no longer needed. Ported from linux-2.6.18-xen.hg 707:e410857fd83c [ Impact: add Xen-internal API to make pages phys-contig ] Signed-off-by: Alex Nixon <alex.nixon@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen/xen-ops.h')
-rw-r--r--include/xen/xen-ops.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index 883a21bba24..d789c937c48 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -14,4 +14,10 @@ void xen_mm_unpin_all(void);
void xen_timer_resume(void);
void xen_arch_resume(void);
+extern unsigned long *xen_contiguous_bitmap;
+int xen_create_contiguous_region(unsigned long vstart, unsigned int order,
+ unsigned int address_bits);
+
+void xen_destroy_contiguous_region(unsigned long vstart, unsigned int order);
+
#endif /* INCLUDE_XEN_OPS_H */