[linux-block.git] / include / memory / renesas-rpc-if.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Renesas RPC-IF core driver
 *
 * Copyright (C) 2018~2019 Renesas Solutions Corp.
 * Copyright (C) 2019 Macronix International Co., Ltd.
 * Copyright (C) 2019-2020 Cogent Embedded, Inc.
 */

#ifndef __RENESAS_RPC_IF_H
#define __RENESAS_RPC_IF_H

#include <linux/pm_runtime.h>
#include <linux/types.h>

enum rpcif_data_dir {
	RPCIF_NO_DATA,
	RPCIF_DATA_IN,
	RPCIF_DATA_OUT,
};

struct rpcif_op {
	struct {
		u8 buswidth;
		u8 opcode;
		bool ddr;
	} cmd, ocmd;

	struct {
		u8 nbytes;
		u8 buswidth;
		bool ddr;
		u64 val;
	} addr;

	struct {
		u8 ncycles;
		u8 buswidth;
	} dummy;

	struct {
		u8 nbytes;
		u8 buswidth;
		bool ddr;
		u32 val;
	} option;

	struct {
		u8 buswidth;
		unsigned int nbytes;
		enum rpcif_data_dir dir;
		bool ddr;
		union {
			void *in;
			const void *out;
		} buf;
	} data;
};

enum rpcif_type {
	RPCIF_RCAR_GEN3,
	RPCIF_RCAR_GEN4,
	RPCIF_RZ_G2L,
};

struct rpcif {
	struct device *dev;
	void __iomem *dirmap;
	size_t size;
};

int rpcif_sw_init(struct rpcif *rpc, struct device *dev);
int rpcif_hw_init(struct device *dev, bool hyperflash);
void rpcif_prepare(struct device *dev, const struct rpcif_op *op, u64 *offs,
		   size_t *len);
int rpcif_manual_xfer(struct device *dev);
ssize_t rpcif_dirmap_read(struct device *dev, u64 offs, size_t len, void *buf);

#endif // __RENESAS_RPC_IF_H
Commit	Line	Data
ca7d8b98 SS	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* Renesas RPC-IF core driver
	4	*
	5	* Copyright (C) 2018~2019 Renesas Solutions Corp.
	6	* Copyright (C) 2019 Macronix International Co., Ltd.
	7	* Copyright (C) 2019-2020 Cogent Embedded, Inc.
	8	*/
	9
	10	#ifndef __RENESAS_RPC_IF_H
	11	#define __RENESAS_RPC_IF_H
	12
7889a7da	13	#include <linux/pm_runtime.h>
ca7d8b98 SS	14	#include <linux/types.h>
	15
	16	enum rpcif_data_dir {
	17	RPCIF_NO_DATA,
	18	RPCIF_DATA_IN,
	19	RPCIF_DATA_OUT,
	20	};
	21
8c84a733	22	struct rpcif_op {
ca7d8b98 SS	23	struct {
	24	u8 buswidth;
	25	u8 opcode;
	26	bool ddr;
	27	} cmd, ocmd;
	28
	29	struct {
	30	u8 nbytes;
	31	u8 buswidth;
	32	bool ddr;
	33	u64 val;
	34	} addr;
	35
	36	struct {
	37	u8 ncycles;
	38	u8 buswidth;
	39	} dummy;
	40
	41	struct {
	42	u8 nbytes;
	43	u8 buswidth;
	44	bool ddr;
	45	u32 val;
	46	} option;
	47
	48	struct {
	49	u8 buswidth;
	50	unsigned int nbytes;
	51	enum rpcif_data_dir dir;
	52	bool ddr;
	53	union {
	54	void *in;
	55	const void *out;
	56	} buf;
	57	} data;
	58	};
	59
b04cc0d9 LP	60	enum rpcif_type {
b04cc0d9 LP	61	RPCIF_RCAR_GEN3,
1de3866f	62	RPCIF_RCAR_GEN4,
b04cc0d9 LP	63	RPCIF_RZ_G2L,
	64	};
	65
8c84a733	66	struct rpcif {
ca7d8b98 SS	67	struct device *dev;
ca7d8b98 SS	68	void __iomem *dirmap;
ca7d8b98	69	size_t size;
ca7d8b98 SS	70	};
ca7d8b98 SS	71
8c84a733	72	int rpcif_sw_init(struct rpcif rpc, struct device dev);
a198fcd1 GU	73	int rpcif_hw_init(struct device *dev, bool hyperflash);
a198fcd1 GU	74	void rpcif_prepare(struct device dev, const struct rpcif_op op, u64 *offs,
ca7d8b98	75	size_t *len);
a198fcd1 GU	76	int rpcif_manual_xfer(struct device *dev);
a198fcd1 GU	77	ssize_t rpcif_dirmap_read(struct device dev, u64 offs, size_t len, void buf);
ca7d8b98 SS	78
ca7d8b98 SS	79	#endif // __RENESAS_RPC_IF_H