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authorNikunj A Dadhania <nikunj@linux.vnet.ibm.com>2016-02-01 11:18:11 +0530
committerAlexey Kardashevskiy <aik@ozlabs.ru>2016-02-08 16:40:39 +1100
commit9d4ff9d75cb483f7b8da30506859c83b45af4913 (patch)
treebd2100db3a3ef42800bc7a81952d001443cab7b5 /lib
parentf83299621cde03cd406cbb665fc5eb1f348afc9b (diff)
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virtio: 1.0 helper to read 16/32/64 bit value
To avoid cluttering the driver code with modern/legacy code introduce virtio_cpu_to_modern{16,32,64} and virtio_modern{16,32,64}_to_cpu in a separate header file virtio-internal.h. Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Suggested-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Diffstat (limited to 'lib')
-rw-r--r--lib/libvirtio/virtio-internal.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/libvirtio/virtio-internal.h b/lib/libvirtio/virtio-internal.h
new file mode 100644
index 0000000..08662ea
--- /dev/null
+++ b/lib/libvirtio/virtio-internal.h
@@ -0,0 +1,48 @@
+/******************************************************************************
+ * Copyright (c) 2016 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _LIBVIRTIO_INTERNAL_H
+#define _LIBVIRTIO_INTERNAL_H
+
+#include <byteorder.h>
+
+static inline uint16_t virtio_cpu_to_modern16(struct virtio_device *dev, uint16_t val)
+{
+ return dev->is_modern ? cpu_to_le16(val) : val;
+}
+
+static inline uint32_t virtio_cpu_to_modern32(struct virtio_device *dev, uint32_t val)
+{
+ return dev->is_modern ? cpu_to_le32(val) : val;
+}
+
+static inline uint64_t virtio_cpu_to_modern64(struct virtio_device *dev, uint64_t val)
+{
+ return dev->is_modern ? cpu_to_le64(val) : val;
+}
+
+static inline uint16_t virtio_modern16_to_cpu(struct virtio_device *dev, uint16_t val)
+{
+ return dev->is_modern ? le16_to_cpu(val) : val;
+}
+
+static inline uint32_t virtio_modern32_to_cpu(struct virtio_device *dev, uint32_t val)
+{
+ return dev->is_modern ? le32_to_cpu(val) : val;
+}
+
+static inline uint64_t virtio_modern64_to_cpu(struct virtio_device *dev, uint64_t val)
+{
+ return dev->is_modern ? le64_to_cpu(val) : val;
+}
+
+#endif /* _LIBVIRTIO_INTERNAL_H */