[linux-2.6-block.git] / include / linux / mailbox / brcm-message.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  Copyright (C) 2016 Broadcom
 *
 * Common header for Broadcom mailbox messages which is shared across
 * Broadcom SoCs and Broadcom mailbox client drivers.
 */

#ifndef _LINUX_BRCM_MESSAGE_H_
#define _LINUX_BRCM_MESSAGE_H_

#include <linux/scatterlist.h>

enum brcm_message_type {
	BRCM_MESSAGE_UNKNOWN = 0,
	BRCM_MESSAGE_BATCH,
	BRCM_MESSAGE_SPU,
	BRCM_MESSAGE_SBA,
	BRCM_MESSAGE_MAX,
};

struct brcm_sba_command {
	u64 cmd;
	u64 *cmd_dma;
	dma_addr_t cmd_dma_addr;
#define BRCM_SBA_CMD_TYPE_A		BIT(0)
#define BRCM_SBA_CMD_TYPE_B		BIT(1)
#define BRCM_SBA_CMD_TYPE_C		BIT(2)
#define BRCM_SBA_CMD_HAS_RESP		BIT(3)
#define BRCM_SBA_CMD_HAS_OUTPUT		BIT(4)
	u64 flags;
	dma_addr_t resp;
	size_t resp_len;
	dma_addr_t data;
	size_t data_len;
};

struct brcm_message {
	enum brcm_message_type type;
	union {
		struct {
			struct brcm_message *msgs;
			unsigned int msgs_queued;
			unsigned int msgs_count;
		} batch;
		struct {
			struct scatterlist *src;
			struct scatterlist *dst;
		} spu;
		struct {
			struct brcm_sba_command *cmds;
			unsigned int cmds_count;
		} sba;
	};
	void *ctx;
	int error;
};

#endif /* _LINUX_BRCM_MESSAGE_H_ */
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
a24532f8 RR	2	/*
	3	* Copyright (C) 2016 Broadcom
	4	*
a24532f8 RR	5	* Common header for Broadcom mailbox messages which is shared across
	6	* Broadcom SoCs and Broadcom mailbox client drivers.
	7	*/
	8
	9	#ifndef _LINUX_BRCM_MESSAGE_H_
	10	#define _LINUX_BRCM_MESSAGE_H_
	11
	12	#include <linux/scatterlist.h>
	13
	14	enum brcm_message_type {
	15	BRCM_MESSAGE_UNKNOWN = 0,
dbc049ee	16	BRCM_MESSAGE_BATCH,
a24532f8 RR	17	BRCM_MESSAGE_SPU,
	18	BRCM_MESSAGE_SBA,
	19	BRCM_MESSAGE_MAX,
	20	};
	21
	22	struct brcm_sba_command {
	23	u64 cmd;
dbc049ee AP	24	u64 *cmd_dma;
dbc049ee AP	25	dma_addr_t cmd_dma_addr;
a24532f8 RR	26	#define BRCM_SBA_CMD_TYPE_A BIT(0)
	27	#define BRCM_SBA_CMD_TYPE_B BIT(1)
	28	#define BRCM_SBA_CMD_TYPE_C BIT(2)
	29	#define BRCM_SBA_CMD_HAS_RESP BIT(3)
	30	#define BRCM_SBA_CMD_HAS_OUTPUT BIT(4)
	31	u64 flags;
a24532f8 RR	32	dma_addr_t resp;
a24532f8 RR	33	size_t resp_len;
dbc049ee AP	34	dma_addr_t data;
dbc049ee AP	35	size_t data_len;
a24532f8 RR	36	};
	37
	38	struct brcm_message {
	39	enum brcm_message_type type;
	40	union {
dbc049ee AP	41	struct {
	42	struct brcm_message *msgs;
	43	unsigned int msgs_queued;
	44	unsigned int msgs_count;
	45	} batch;
a24532f8 RR	46	struct {
	47	struct scatterlist *src;
	48	struct scatterlist *dst;
	49	} spu;
	50	struct {
	51	struct brcm_sba_command *cmds;
	52	unsigned int cmds_count;
	53	} sba;
	54	};
	55	void *ctx;
	56	int error;
	57	};
	58
	59	#endif /* _LINUX_BRCM_MESSAGE_H_ */