// SPDX-License-Identifier: GPL-2.0+
/* Copyright (C) 2022 AVM GmbH <fritzbox_info@avm.de> */

#define pr_fmt(fmt) "mrpc fwinfo server: " fmt
#include <linux/mrpc.h>
#include <asm/byteorder.h>
#include "avm_fw_info.h"

static struct mrpc_server *server;

static int __avm_fwinfo_get_buildinfo(void *arg, ssize_t arglen,
				      void *reply, ssize_t replen)
{
	struct avm_firmware_build_info_be *bibe = reply;

	BUG_ON(replen < sizeof(*bibe));
	strscpy(bibe->buildnumber, avm_fw_build_info->buildnumber,
		sizeof(bibe->buildnumber));
	strscpy(bibe->firmwarestring, avm_fw_build_info->firmwarestring,
		sizeof(bibe->firmwarestring));
	bibe->buildtype  = cpu_to_be32(avm_fw_build_info->buildtype);
	bibe->builddirty = cpu_to_be32(avm_fw_build_info->builddirty);

	/* This server is one-shot only */
	mrpc_server_unregister(server);
	server = NULL;

	return 0;
}

static struct mrpc_procinfo avm_fwinfo_server_procs[] = {
	MRPC_PROCINFO_ENTRY(MRPC_AVM_FWINFO_GET_BUILDINFO,
			    __avm_fwinfo_get_buildinfo,
			    0, sizeof(struct avm_firmware_build_info_be)),
};

static int __init avm_fwinfo_server_init(void)
{
	server = mrpc_server_register(
		MRPC_RESERVED_ID_AVM_FWINFO,
		"AVM fwinfo server",
		avm_fwinfo_server_procs,
		ARRAY_SIZE(avm_fwinfo_server_procs));
	if (!server)
		return -ENODEV;

	return 0;
}
module_init(avm_fwinfo_server_init);