/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2016 Broadcom
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*
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* Common header for Broadcom mailbox messages which is shared across
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* Broadcom SoCs and Broadcom mailbox client drivers.
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*/
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#ifndef _LINUX_BRCM_MESSAGE_H_
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#define _LINUX_BRCM_MESSAGE_H_
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#include <linux/scatterlist.h>
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enum brcm_message_type {
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BRCM_MESSAGE_UNKNOWN = 0,
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BRCM_MESSAGE_BATCH,
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BRCM_MESSAGE_SPU,
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BRCM_MESSAGE_SBA,
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BRCM_MESSAGE_MAX,
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};
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struct brcm_sba_command {
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u64 cmd;
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u64 *cmd_dma;
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dma_addr_t cmd_dma_addr;
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#define BRCM_SBA_CMD_TYPE_A BIT(0)
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#define BRCM_SBA_CMD_TYPE_B BIT(1)
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#define BRCM_SBA_CMD_TYPE_C BIT(2)
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#define BRCM_SBA_CMD_HAS_RESP BIT(3)
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#define BRCM_SBA_CMD_HAS_OUTPUT BIT(4)
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u64 flags;
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dma_addr_t resp;
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size_t resp_len;
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dma_addr_t data;
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size_t data_len;
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};
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struct brcm_message {
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enum brcm_message_type type;
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union {
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struct {
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struct brcm_message *msgs;
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unsigned int msgs_queued;
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unsigned int msgs_count;
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} batch;
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struct {
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struct scatterlist *src;
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struct scatterlist *dst;
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} spu;
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struct {
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struct brcm_sba_command *cmds;
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unsigned int cmds_count;
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} sba;
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};
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void *ctx;
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int error;
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};
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#endif /* _LINUX_BRCM_MESSAGE_H_ */
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