include/linux/rpmsg/ns.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _LINUX_RPMSG_NS_H
   4 #define _LINUX_RPMSG_NS_H
   5
   6 #include <linux/mod_devicetable.h>
   7 #include <linux/rpmsg.h>
   8 #include <linux/rpmsg/byteorder.h>
   9 #include <linux/types.h>
  10
  11 /**
  12  * struct rpmsg_ns_msg - dynamic name service announcement message
  13  * @name: name of remote service that is published
  14  * @addr: address of remote service that is published
  15  * @flags: indicates whether service is created or destroyed
  16  *
  17  * This message is sent across to publish a new service, or announce
  18  * about its removal. When we receive these messages, an appropriate
  19  * rpmsg channel (i.e device) is created/destroyed. In turn, the ->probe()
  20  * or ->remove() handler of the appropriate rpmsg driver will be invoked
  21  * (if/as-soon-as one is registered).
  22  */
  23 struct rpmsg_ns_msg {
  24         char name[RPMSG_NAME_SIZE];
  25         __rpmsg32 addr;
  26         __rpmsg32 flags;
  27 } __packed;
  28
  29 /**
  30  * enum rpmsg_ns_flags - dynamic name service announcement flags
  31  *
  32  * @RPMSG_NS_CREATE: a new remote service was just created
  33  * @RPMSG_NS_DESTROY: a known remote service was just destroyed
  34  */
  35 enum rpmsg_ns_flags {
  36         RPMSG_NS_CREATE         = 0,
  37         RPMSG_NS_DESTROY        = 1,
  38 };
  39
  40 /* Address 53 is reserved for advertising remote services */
  41 #define RPMSG_NS_ADDR                   (53)
  42
  43 int rpmsg_ns_register_device(struct rpmsg_device *rpdev);
  44
  45 #endif