linux/drivers/rpmsg/qcom_glink_ssr.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
 * Copyright (c) 2017, Linaro Ltd.
 */

#include <linux/completion.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/rpmsg.h>
#include <linux/rpmsg/qcom_glink.h>
#include <linux/remoteproc/qcom_rproc.h>

/**
 * struct do_cleanup_msg - The data structure for an SSR do_cleanup message
 * @version:	The G-Link SSR protocol version
 * @command:	The G-Link SSR command - do_cleanup
 * @seq_num:	Sequence number
 * @name_len:	Length of the name of the subsystem being restarted
 * @name:	G-Link edge name of the subsystem being restarted
 */
struct do_cleanup_msg { … };

/**
 * struct cleanup_done_msg - The data structure for an SSR cleanup_done message
 * @version:	The G-Link SSR protocol version
 * @response:	The G-Link SSR response to a do_cleanup command, cleanup_done
 * @seq_num:	Sequence number
 */
struct cleanup_done_msg { … };

/*
 * G-Link SSR protocol commands
 */
#define GLINK_SSR_DO_CLEANUP …
#define GLINK_SSR_CLEANUP_DONE …

struct glink_ssr { … };

/* Notifier list for all registered glink_ssr instances */
static BLOCKING_NOTIFIER_HEAD(ssr_notifiers);

/**
 * qcom_glink_ssr_notify() - notify GLINK SSR about stopped remoteproc
 * @ssr_name:	name of the remoteproc that has been stopped
 */
void qcom_glink_ssr_notify(const char *ssr_name)
{ … }
EXPORT_SYMBOL_GPL(…);

static int qcom_glink_ssr_callback(struct rpmsg_device *rpdev,
				   void *data, int len, void *priv, u32 addr)
{ … }

static int qcom_glink_ssr_notifier_call(struct notifier_block *nb,
					unsigned long event,
					void *data)
{ … }

static int qcom_glink_ssr_probe(struct rpmsg_device *rpdev)
{ … }

static void qcom_glink_ssr_remove(struct rpmsg_device *rpdev)
{ … }

static const struct rpmsg_device_id qcom_glink_ssr_match[] = …;
MODULE_DEVICE_TABLE(rpmsg, qcom_glink_ssr_match);

static struct rpmsg_driver qcom_glink_ssr_driver = …;
module_rpmsg_driver(…) …;