Virtio modern devices are always little edian, let's introduce
the LE functions for read/write configuration space for
virtio modern devices, which avoid complaint by Sparse when
we use the virtio_creaed/virtio_cwrite in VIRTIO_1 devices.
Signed-off-by: Gonglei <arei.gonglei@xxxxxxxxxx>
---
include/linux/virtio_config.h | 45 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 26c155b..de05707 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -414,4 +414,49 @@ static inline void virtio_cwrite64(struct virtio_device *vdev,
_r; \
})
+static inline __le16 virtio_cread16_le(struct virtio_device *vdev,
+ unsigned int offset)
+{
+ __le16 ret;
+
+ vdev->config->get(vdev, offset, &ret, sizeof(ret));
+ return ret;
+}
+
+static inline void virtio_cwrite16_le(struct virtio_device *vdev,
+ unsigned int offset, __le16 val)
+{
+ vdev->config->set(vdev, offset, &val, sizeof(val));
+}
+
+static inline __le32 virtio_cread32_le(struct virtio_device *vdev,
+ unsigned int offset)
+{
+ __le32 ret;
+
+ vdev->config->get(vdev, offset, &ret, sizeof(ret));
+ return ret;
+}
+
+static inline void virtio_cwrite32_le(struct virtio_device *vdev,
+ unsigned int offset, __le32 val)
+{
+ vdev->config->set(vdev, offset, &val, sizeof(val));
+}
+
+static inline __le64 virtio_cread64_le(struct virtio_device *vdev,
+ unsigned int offset)
+{
+ __le64 ret;
+
+ __virtio_cread_many(vdev, offset, &ret, 1, sizeof(ret));
+ return ret;
+}
+
+static inline void virtio_cwrite64_le(struct virtio_device *vdev,
+ unsigned int offset, __le64 val)
+{
+ vdev->config->set(vdev, offset, &val, sizeof(val));
+}
+
#endif /* _LINUX_VIRTIO_CONFIG_H */
--
1.8.3.1
--
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