f17bb74fb9
Adds the Virtual Services framework and core protocol code. The Virtual Services framework provides a bus for generic inter-vm communications using a high level abstract model. The vservices bus provides support for both HLOS and embedded C clients and servers, allowing VMs to communicate in a common OS independent manner. The vservices bus and services over it are hot-plug capable and can support a wide variety of use cases, including device virtualization using virtual device protocol (classes) and drivers, similar in concept to USB or virtio. Change-Id: I7a696354f59730e0ad340fb92dc85661a7376dee Signed-off-by: Carl van Schaik <carl@cog.systems> Git-commit: 42814676e8bf5fb34060ee80e05e2175ae146292 Git-repo: https://github.com/CogSystems/linux-msm/commits/msm-4.9-hyp [mnalajal@codeaurora: Resolve trivial merge conflicts] Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org> Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
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* drivers/vservices/skeleton_driver.c
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*
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* Copyright (c) 2012-2018 General Dynamics
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* Copyright (c) 2014 Open Kernel Labs, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Skeleton testing driver for templating vService client/server drivers
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*/
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <vservices/session.h>
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#include <vservices/buffer.h>
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#include <vservices/service.h>
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struct skeleton_info {
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unsigned dummy;
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};
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static void vs_skeleton_handle_start(struct vs_service_device *service)
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{
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/* NOTE: Do not change this message - is it used for system testing */
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dev_info(&service->dev, "skeleton handle_start\n");
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}
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static int vs_skeleton_handle_message(struct vs_service_device *service,
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struct vs_mbuf *mbuf)
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{
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dev_info(&service->dev, "skeleton handle_messasge\n");
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return -EBADMSG;
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}
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static void vs_skeleton_handle_notify(struct vs_service_device *service,
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u32 flags)
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{
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dev_info(&service->dev, "skeleton handle_notify\n");
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}
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static void vs_skeleton_handle_reset(struct vs_service_device *service)
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{
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dev_info(&service->dev, "skeleton handle_reset %s service %d\n",
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service->is_server ? "server" : "client", service->id);
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}
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static int vs_skeleton_probe(struct vs_service_device *service)
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{
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struct skeleton_info *info;
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int err = -ENOMEM;
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info = kzalloc(sizeof(*info), GFP_KERNEL);
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if (!info)
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goto fail;
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dev_set_drvdata(&service->dev, info);
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return 0;
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fail:
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return err;
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}
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static int vs_skeleton_remove(struct vs_service_device *service)
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{
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struct skeleton_info *info = dev_get_drvdata(&service->dev);
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dev_info(&service->dev, "skeleton remove\n");
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kfree(info);
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return 0;
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}
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static struct vs_service_driver server_skeleton_driver = {
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.protocol = "com.ok-labs.skeleton",
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.is_server = true,
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.probe = vs_skeleton_probe,
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.remove = vs_skeleton_remove,
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.start = vs_skeleton_handle_start,
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.receive = vs_skeleton_handle_message,
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.notify = vs_skeleton_handle_notify,
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.reset = vs_skeleton_handle_reset,
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.driver = {
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.name = "vs-server-skeleton",
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.owner = THIS_MODULE,
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.bus = &vs_server_bus_type,
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},
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};
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static struct vs_service_driver client_skeleton_driver = {
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.protocol = "com.ok-labs.skeleton",
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.is_server = false,
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.probe = vs_skeleton_probe,
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.remove = vs_skeleton_remove,
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.start = vs_skeleton_handle_start,
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.receive = vs_skeleton_handle_message,
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.notify = vs_skeleton_handle_notify,
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.reset = vs_skeleton_handle_reset,
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.driver = {
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.name = "vs-client-skeleton",
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.owner = THIS_MODULE,
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.bus = &vs_client_bus_type,
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},
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};
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static int __init vs_skeleton_init(void)
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{
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int ret;
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ret = driver_register(&server_skeleton_driver.driver);
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if (ret)
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return ret;
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ret = driver_register(&client_skeleton_driver.driver);
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if (ret)
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driver_unregister(&server_skeleton_driver.driver);
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return ret;
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}
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static void __exit vs_skeleton_exit(void)
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{
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driver_unregister(&server_skeleton_driver.driver);
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driver_unregister(&client_skeleton_driver.driver);
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}
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module_init(vs_skeleton_init);
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module_exit(vs_skeleton_exit);
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MODULE_DESCRIPTION("OKL4 Virtual Services Skeleton Client/Server Driver");
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MODULE_AUTHOR("Open Kernel Labs, Inc");
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