// SPDX-License-Identifier: GPL-2
/*
 * avm-prom config over mrpc
 *
 * Copyright 2017,2019 AVM GmbH.
 */

#ifndef __AVMCFG_MRPC_H__
#define __AVMCFG_MRPC_H__
#include <linux/types.h>
#include <linux/env.h>
#include <asm/byteorder.h>
#include <avm/enh/prom_config.h>

enum {
	MRPC_AVMCFG_PROC_GETLOC   = 0,
	MRPC_AVMCFG_PROC_RAW_READ = 1,
};


struct avmcfg_read_request {
	__be32 offset;
	__be32 len;
};

struct avm_prom_config_remote_loc {
	__be32	offset;
	__be32	len;
	__be32	align_at;
} __packed;

#define AVMCFG_MRPC_MAX_PAYLOAD 128
struct avmcfg_read_reply {
	__be32 result;
	char data[AVMCFG_MRPC_MAX_PAYLOAD];
};

struct avmcfg_probe_reply {
	__be32 result;
	struct avm_prom_config_remote_loc rloc;
};

static inline
void avm_prom_config_rloc2loc(const struct avm_prom_config_remote_loc *rloc,
			      struct avm_prom_config_loc *loc)
{
	loc->offset   = be32_to_cpu(rloc->offset);
	loc->len      = be32_to_cpu(rloc->len);
	loc->align_at = be32_to_cpu(rloc->align_at);
}

static inline
void avm_prom_config_loc2rloc(const struct avm_prom_config_loc *loc,
			      struct avm_prom_config_remote_loc *rloc)
{
	rloc->offset   = cpu_to_be32(loc->offset);
	rloc->len      = cpu_to_be32(loc->len);
	rloc->align_at = cpu_to_be32(loc->align_at);

	BUILD_BUG_ON(sizeof(struct avm_prom_config_loc) !=
			sizeof(struct avm_prom_config_remote_loc));
}
#endif /* __AVMCFG_MRPC_H__ */