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-rw-r--r--include/xen/xen.h85
1 files changed, 85 insertions, 0 deletions
diff --git a/include/xen/xen.h b/include/xen/xen.h
new file mode 100644
index 000000000..b088f0d31
--- /dev/null
+++ b/include/xen/xen.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _XEN_XEN_H
+#define _XEN_XEN_H
+
+enum xen_domain_type {
+ XEN_NATIVE, /* running on bare hardware */
+ XEN_PV_DOMAIN, /* running in a PV domain */
+ XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
+};
+
+#ifdef CONFIG_XEN
+extern enum xen_domain_type xen_domain_type;
+#else
+#define xen_domain_type XEN_NATIVE
+#endif
+
+#ifdef CONFIG_XEN_PVH
+extern bool xen_pvh;
+#else
+#define xen_pvh 0
+#endif
+
+#define xen_domain() (xen_domain_type != XEN_NATIVE)
+#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
+#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
+#define xen_pvh_domain() (xen_pvh)
+
+#include <linux/types.h>
+
+extern uint32_t xen_start_flags;
+
+#include <xen/interface/hvm/start_info.h>
+extern struct hvm_start_info pvh_start_info;
+
+#ifdef CONFIG_XEN_DOM0
+#include <xen/interface/xen.h>
+#include <asm/xen/hypervisor.h>
+
+#define xen_initial_domain() (xen_domain() && \
+ (xen_start_flags & SIF_INITDOMAIN))
+#else /* !CONFIG_XEN_DOM0 */
+#define xen_initial_domain() (0)
+#endif /* CONFIG_XEN_DOM0 */
+
+struct bio_vec;
+struct page;
+
+bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
+ const struct page *page);
+
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
+extern u64 xen_saved_max_mem_size;
+#endif
+
+#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
+int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
+void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
+#include <linux/ioport.h>
+int arch_xen_unpopulated_init(struct resource **res);
+#else
+#include <xen/balloon.h>
+static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
+ struct page **pages)
+{
+ return xen_alloc_ballooned_pages(nr_pages, pages);
+}
+static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
+ struct page **pages)
+{
+ xen_free_ballooned_pages(nr_pages, pages);
+}
+#endif
+
+#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
+bool __init xen_processor_present(uint32_t acpi_id);
+#else
+#include <linux/bug.h>
+static inline bool xen_processor_present(uint32_t acpi_id)
+{
+ BUG();
+ return false;
+}
+#endif
+
+#endif /* _XEN_XEN_H */