Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / xen.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/xen.h b/qemu/roms/ipxe/src/include/ipxe/xen.h
new file mode 100644 (file)
index 0000000..60aabe0
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/xen.h
@@ -0,0 +1,75 @@
+#ifndef _IPXE_XEN_H
+#define _IPXE_XEN_H
+
+/** @file
+ *
+ * Xen interface
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/* Define Xen interface version before including any Xen header files */
+#define __XEN_INTERFACE_VERSION__ 0x00040400
+
+#include <stdint.h>
+#include <ipxe/uaccess.h>
+#include <xen/xen.h>
+#include <xen/event_channel.h>
+
+/* Memory barrier macros used by ring.h */
+#define xen_mb() mb()
+#define xen_rmb() rmb()
+#define xen_wmb() wmb()
+
+struct xen_hypercall;
+
+/** A Xen grant table */
+struct xen_grant {
+       /** Grant table entries */
+       struct grant_entry_v1 *table;
+       /** Total grant table length */
+       size_t len;
+       /** Entry size shift (for later version tables) */
+       unsigned int shift;
+       /** Number of grant table entries in use */
+       unsigned int used;
+       /** Most recently used grant reference */
+       unsigned int ref;
+};
+
+/** A XenStore */
+struct xen_store {
+       /** XenStore domain interface */
+       struct xenstore_domain_interface *intf;
+       /** Event channel */
+       evtchn_port_t port;
+};
+
+/** A Xen hypervisor */
+struct xen_hypervisor {
+       /** Hypercall table */
+       struct xen_hypercall *hypercall;
+       /** Shared info page */
+       struct shared_info *shared;
+       /** Grant table */
+       struct xen_grant grant;
+       /** XenStore */
+       struct xen_store store;
+};
+
+#include <bits/xen.h>
+
+/**
+ * Convert a Xen status code to an iPXE status code
+ *
+ * @v xenrc            Xen status code (negated)
+ * @ret rc             iPXE status code (before negation)
+ *
+ * Xen status codes are defined in the file include/xen/errno.h in the
+ * Xen repository.  They happen to match the Linux error codes, some
+ * of which can be found in our include/ipxe/errno/linux.h.
+ */
+#define EXEN( xenrc ) EPLATFORM ( EINFO_EPLATFORM, -(xenrc) )
+
+#endif /* _IPXE_XEN_H */