Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git

2 files changed, 50 insertions, 6 deletions

diff --git a/include/linux/rpmsg/virtio_rpmsg.h b/include/linux/rpmsg/virtio_rpmsg.h
new file mode 100644
index 000000000000..0872cbca4593
--- /dev/null
+++ b/include/linux/rpmsg/virtio_rpmsg.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) Pinecone Inc. 2019
+ * Copyright (C) Xiang Xiao <xiaoxiang@pinecone.net>
+ * Copyright (C) Advanced Micro Devices, Inc. 2026
+ */
+
+#ifndef _LINUX_VIRTIO_RPMSG_H
+#define _LINUX_VIRTIO_RPMSG_H
+
+#include <linux/types.h>
+#include <linux/virtio_types.h>
+
+/* The feature bitmap for virtio rpmsg */
+#define VIRTIO_RPMSG_F_NS	0 /* RP supports name service notifications */
+#define VIRTIO_RPMSG_F_BUFSZ	1 /* RP advertises RX/TX buffer sizes from config space */
+
+/* Version of struct virtio_rpmsg_config understood by this driver */
+#define RPMSG_VDEV_CONFIG_V1	1
+
+/**
+ * struct virtio_rpmsg_config - config space for rpmsg virtio device
+ *
+ * @version:	version of this structure, currently %RPMSG_VDEV_CONFIG_V1.
+ * @size:	size of this structure in bytes.
+ * @txbuf_size:	Tx buf size from remote's view. For Linux this is rx buf size.
+ * @rxbuf_size:	Rx buf size from remote's view. For Linux this is tx buf size.
+ *
+ * This is the configuration structure shared by the device and the driver,
+ * read when %VIRTIO_RPMSG_F_BUFSZ is negotiated. The fields are laid out so
+ * the structure is naturally 32-bit aligned.
+ */
+struct virtio_rpmsg_config {
+	u8 version;
+	__virtio16 size;
+	/* The tx/rx individual buffer size (if VIRTIO_RPMSG_F_BUFSZ) */
+	__virtio32 txbuf_size;
+	__virtio32 rxbuf_size;
+} __packed;
+
+#endif /* _LINUX_VIRTIO_RPMSG_H */
diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h
index f0c8da2b185b..d553ebac3181 100644
--- a/include/uapi/linux/rpmsg.h
+++ b/include/uapi/linux/rpmsg.h
@@ -24,32 +24,35 @@ struct rpmsg_endpoint_info {
 };
 
 /**
- * Instantiate a new rmpsg char device endpoint.
+ * RPMSG_CREATE_EPT_IOCTL - Instantiate a new rmpsg char device endpoint.
  */
 #define RPMSG_CREATE_EPT_IOCTL	_IOW(0xb5, 0x1, struct rpmsg_endpoint_info)
 
 /**
- * Destroy a rpmsg char device endpoint created by the RPMSG_CREATE_EPT_IOCTL.
+ * RPMSG_DESTROY_EPT_IOCTL - Destroy a rpmsg char device endpoint created
+ * by the RPMSG_CREATE_EPT_IOCTL.
  */
 #define RPMSG_DESTROY_EPT_IOCTL	_IO(0xb5, 0x2)
 
 /**
- * Instantiate a new local rpmsg service device.
+ * RPMSG_CREATE_DEV_IOCTL - Instantiate a new local rpmsg service device.
  */
 #define RPMSG_CREATE_DEV_IOCTL	_IOW(0xb5, 0x3, struct rpmsg_endpoint_info)
 
 /**
- * Release a local rpmsg device.
+ * RPMSG_RELEASE_DEV_IOCTL - Release a local rpmsg device.
  */
 #define RPMSG_RELEASE_DEV_IOCTL	_IOW(0xb5, 0x4, struct rpmsg_endpoint_info)
 
 /**
- * Get the flow control state of the remote rpmsg char device.
+ * RPMSG_GET_OUTGOING_FLOWCONTROL - Get the flow control state of the
+ * remote rpmsg char device.
  */
 #define RPMSG_GET_OUTGOING_FLOWCONTROL _IOR(0xb5, 0x5, int)
 
 /**
- * Set the flow control state of the local rpmsg char device.
+ * RPMSG_SET_INCOMING_FLOWCONTROL - Set the flow control state of the
+ * local rpmsg char device.
  */
 #define RPMSG_SET_INCOMING_FLOWCONTROL _IOR(0xb5, 0x6, int)