3 files changed, 44 insertions, 0 deletions
diff --git a/include/xen/arm/xen-ops.h b/include/xen/arm/xen-ops.h
new file mode 100644
index 000000000000..b0766a660338
--- /dev/null
+++ b/include/xen/arm/xen-ops.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_ARM_XEN_OPS_H
+#define _ASM_ARM_XEN_OPS_H
+
+#include <xen/swiotlb-xen.h>
+#include <xen/xen-ops.h>
+
+static inline void xen_setup_dma_ops(struct device *dev)
+{
+#ifdef CONFIG_XEN
+	if (xen_is_grant_dma_device(dev))
+		xen_grant_setup_dma_ops(dev);
+	else if (xen_swiotlb_detect())
+		dev->dma_ops = &xen_swiotlb_dma_ops;
+#endif
+}
+
+#endif /* _ASM_ARM_XEN_OPS_H */
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 527c9907f99c..e279be353e3f 100644
--- a/include/xen/grant_table.h
+++ b/include/xen/grant_table.h
@@ -127,10 +127,14 @@ int gnttab_try_end_foreign_access(grant_ref_t ref);
  */
 int gnttab_alloc_grant_references(u16 count, grant_ref_t *pprivate_head);
 
+int gnttab_alloc_grant_reference_seq(unsigned int count, grant_ref_t *first);
+
 void gnttab_free_grant_reference(grant_ref_t ref);
 
 void gnttab_free_grant_references(grant_ref_t head);
 
+void gnttab_free_grant_reference_seq(grant_ref_t head, unsigned int count);
+
 int gnttab_empty_grant_references(const grant_ref_t *pprivate_head);
 
 int gnttab_claim_grant_reference(grant_ref_t *pprivate_head);
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index c7c1b46ff4cd..dae0f350c678 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -5,6 +5,7 @@
 #include <linux/percpu.h>
 #include <linux/notifier.h>
 #include <linux/efi.h>
+#include <linux/virtio_anchor.h>
 #include <xen/features.h>
 #include <asm/xen/interface.h>
 #include <xen/interface/vcpu.h>
@@ -214,4 +215,25 @@ static inline void xen_preemptible_hcall_end(void) { }
 
 #endif /* CONFIG_XEN_PV && !CONFIG_PREEMPTION */
 
+#ifdef CONFIG_XEN_GRANT_DMA_OPS
+void xen_grant_setup_dma_ops(struct device *dev);
+bool xen_is_grant_dma_device(struct device *dev);
+bool xen_virtio_mem_acc(struct virtio_device *dev);
+#else
+static inline void xen_grant_setup_dma_ops(struct device *dev)
+{
+}
+static inline bool xen_is_grant_dma_device(struct device *dev)
+{
+	return false;
+}
+
+struct virtio_device;
+
+static inline bool xen_virtio_mem_acc(struct virtio_device *dev)
+{
+	return false;
+}
+#endif /* CONFIG_XEN_GRANT_DMA_OPS */
+
 #endif /* INCLUDE_XEN_OPS_H */