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/* 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_ */