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authorStefano Stabellini <stefano.stabellini@xilinx.com>2021-03-19 23:01:40 +0300
committerJuergen Gross <jgross@suse.com>2021-04-23 12:33:50 +0300
commitf5079a9a2a31607a2343e544e9182ce35b030578 (patch)
tree845187f971beecc8c97874a6789a4661e3951056 /include/xen/swiotlb-xen.h
parenta929e124060c448b367f56b28a0c118876147b1f (diff)
downloadlinux-f5079a9a2a31607a2343e544e9182ce35b030578.tar.xz
xen/arm: introduce XENFEAT_direct_mapped and XENFEAT_not_direct_mapped
Newer Xen versions expose two Xen feature flags to tell us if the domain is directly mapped or not. Only when a domain is directly mapped it makes sense to enable swiotlb-xen on ARM. Introduce a function on ARM to check the new Xen feature flags and also to deal with the legacy case. Call the function xen_swiotlb_detect. Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20210319200140.12512-1-sstabellini@kernel.org Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'include/xen/swiotlb-xen.h')
-rw-r--r--include/xen/swiotlb-xen.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h
index d5eaf9d682b8..dbc4a4b785f6 100644
--- a/include/xen/swiotlb-xen.h
+++ b/include/xen/swiotlb-xen.h
@@ -3,6 +3,7 @@
#define __LINUX_SWIOTLB_XEN_H
#include <linux/swiotlb.h>
+#include <asm/xen/swiotlb-xen.h>
void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir);