Add qemu 2.4.0

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

diff --git a/qemu/roms/ipxe/src/include/ipxe/nvo.h b/qemu/roms/ipxe/src/include/ipxe/nvo.h
new file mode 100644 (file)
index 0000000..1a629da
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/nvo.h
@@ -0,0 +1,57 @@
+#ifndef _IPXE_NVO_H
+#define _IPXE_NVO_H
+
+/** @file
+ *
+ * Non-volatile stored options
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/dhcpopts.h>
+#include <ipxe/settings.h>
+
+struct nvs_device;
+struct refcnt;
+
+/**
+ * A block of non-volatile stored options
+ */
+struct nvo_block {
+       /** Settings block */
+       struct settings settings;
+       /** Underlying non-volatile storage device */
+       struct nvs_device *nvs;
+       /** Address within NVS device */
+       unsigned int address;
+       /** Length of options data */
+       size_t len;
+       /** Option-containing data */
+       void *data;
+       /**
+        * Resize non-volatile stored option block
+        *
+        * @v nvo               Non-volatile options block
+        * @v len               New size
+        * @ret rc              Return status code
+        */
+       int ( * resize ) ( struct nvo_block *nvo, size_t len );
+       /** DHCP options block */
+       struct dhcp_options dhcpopts;
+};
+
+/** Name of non-volatile options settings block */
+#define NVO_SETTINGS_NAME "nvo"
+
+extern int nvo_applies ( struct settings *settings,
+                        const struct setting *setting );
+extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
+                      size_t address, size_t len,
+                      int ( * resize ) ( struct nvo_block *nvo, size_t len ),
+                      struct refcnt *refcnt );
+extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
+extern void unregister_nvo ( struct nvo_block *nvo );
+
+#endif /* _IPXE_NVO_H */