[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <1479802223-121104-2-git-send-email-arei.gonglei@huawei.com>
Date: Tue, 22 Nov 2016 16:10:22 +0800
From: Gonglei <arei.gonglei@...wei.com>
To: <linux-kernel@...r.kernel.org>, <qemu-devel@...gnu.org>,
<virtio-dev@...ts.oasis-open.org>,
<virtualization@...ts.linux-foundation.org>,
<linux-crypto@...r.kernel.org>
CC: <luonengjun@...wei.com>, <mst@...hat.com>, <stefanha@...hat.com>,
<weidong.huang@...wei.com>, <wu.wubin@...wei.com>,
<xin.zeng@...el.com>, <claudio.fontana@...wei.com>,
<herbert@...dor.apana.org.au>, <pasic@...ux.vnet.ibm.com>,
<davem@...emloft.net>, <jianjay.zhou@...wei.com>,
<hanweidong@...wei.com>, <arei.gonglei@...mail.com>,
<cornelia.huck@...ibm.com>, <xuquan8@...wei.com>,
<longpeng2@...wei.com>, <salvatore.benedetto@...el.com>,
Gonglei <arei.gonglei@...wei.com>
Subject: [PATCH v2 1/2] virtio: introduce little edian functions for virtio_cread/write# family
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@...wei.com>
---
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
Powered by blists - more mailing lists