diff options
Diffstat (limited to 'include/xen/arm/swiotlb-xen.h')
| -rw-r--r-- | include/xen/arm/swiotlb-xen.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/xen/arm/swiotlb-xen.h b/include/xen/arm/swiotlb-xen.h new file mode 100644 index 000000000000..33336ab58afc --- /dev/null +++ b/include/xen/arm/swiotlb-xen.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ARM_SWIOTLB_XEN_H +#define _ASM_ARM_SWIOTLB_XEN_H + +#include <xen/features.h> +#include <xen/xen.h> + +static inline int xen_swiotlb_detect(void) +{ + if (!xen_domain()) + return 0; + if (xen_feature(XENFEAT_direct_mapped)) + return 1; + /* legacy case */ + if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain()) + return 1; + return 0; +} + +#endif /* _ASM_ARM_SWIOTLB_XEN_H */ |