1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_ARM_SWIOTLB_XEN_H 2 #ifndef _ASM_ARM_SWIOTLB_XEN_H
3 #define _ASM_ARM_SWIOTLB_XEN_H 3 #define _ASM_ARM_SWIOTLB_XEN_H
4 4
5 #include <xen/features.h> 5 #include <xen/features.h>
6 #include <xen/xen.h> 6 #include <xen/xen.h>
7 7
8 static inline int xen_swiotlb_detect(void) 8 static inline int xen_swiotlb_detect(void)
9 { 9 {
10 if (!xen_domain()) 10 if (!xen_domain())
11 return 0; 11 return 0;
12 if (xen_feature(XENFEAT_direct_mapped) 12 if (xen_feature(XENFEAT_direct_mapped))
13 return 1; 13 return 1;
14 /* legacy case */ 14 /* legacy case */
15 if (!xen_feature(XENFEAT_not_direct_ma 15 if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain())
16 return 1; 16 return 1;
17 return 0; 17 return 0;
18 } 18 }
19 19
20 #endif /* _ASM_ARM_SWIOTLB_XEN_H */ 20 #endif /* _ASM_ARM_SWIOTLB_XEN_H */
21 21
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