Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/qtest/libqos/fw_cfg.h b/tests/qtest/libqos/fw_cfg.h
new file mode 100644
index 000000000..c6a7cf8cf
--- /dev/null
+++ b/tests/qtest/libqos/fw_cfg.h
@@ -0,0 +1,54 @@
+/*
+ * libqos fw_cfg support
+ *
+ * Copyright IBM, Corp. 2012-2013
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef LIBQOS_FW_CFG_H
+#define LIBQOS_FW_CFG_H
+
+#include "libqtest.h"
+
+typedef struct QFWCFG QFWCFG;
+
+struct QFWCFG
+{
+    uint64_t base;
+    QTestState *qts;
+    void (*select)(QFWCFG *fw_cfg, uint16_t key);
+    void (*read)(QFWCFG *fw_cfg, void *data, size_t len);
+};
+
+void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key);
+void qfw_cfg_read_data(QFWCFG *fw_cfg, void *data, size_t len);
+void qfw_cfg_get(QFWCFG *fw_cfg, uint16_t key, void *data, size_t len);
+uint16_t qfw_cfg_get_u16(QFWCFG *fw_cfg, uint16_t key);
+uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key);
+uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key);
+size_t qfw_cfg_get_file(QFWCFG *fw_cfg, const char *filename,
+                        void *data, size_t buflen);
+
+QFWCFG *mm_fw_cfg_init(QTestState *qts, uint64_t base);
+void mm_fw_cfg_uninit(QFWCFG *fw_cfg);
+QFWCFG *io_fw_cfg_init(QTestState *qts, uint16_t base);
+void io_fw_cfg_uninit(QFWCFG *fw_cfg);
+
+static inline QFWCFG *pc_fw_cfg_init(QTestState *qts)
+{
+    return io_fw_cfg_init(qts, 0x510);
+}
+
+static inline void pc_fw_cfg_uninit(QFWCFG *fw_cfg)
+{
+    io_fw_cfg_uninit(fw_cfg);
+}
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QFWCFG, mm_fw_cfg_uninit)
+
+#endif