72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* vow_scp.h -- VoW SCP definition
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*
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* Copyright (c) 2020 MediaTek Inc.
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* Author: Michael Hsiao <michael.hsiao@mediatek.com>
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*/
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#ifndef __VOW_SCP_H__
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#define __VOW_SCP_H__
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#include <linux/types.h>
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/* if IPI expand, need to modify maximum data length(unit: int) */
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#define VOW_IPI_HEADER_LENGTH (2) /* 2 * 4byte = 8 */
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#define VOW_IPI_SEND_BUFFER_LENGTH (9) /* 9 * 4byte = 36 */
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#define VOW_IPI_RECEIVE_LENGTH (24) /* 24 * 4byte = 96 */
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#define VOW_IPI_ACK_LENGTH (2) /* 2 * 4byte = 8 */
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#define VOW_IPI_WAIT_ACK_TIMEOUT (10)
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#define VOW_IPI_RESEND_TIMES (2)
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#define VOW_IPI_MAGIC_NUM (0x98)
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enum {
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VOW_IPI_BYPASS_ACK = 0,
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VOW_IPI_NEED_ACK,
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VOW_IPI_ACK_BACK
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};
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/* AP -> SCP ipi structure */
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struct vow_ipi_send_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_length;
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unsigned int payload[VOW_IPI_SEND_BUFFER_LENGTH];
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};
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/* SCP -> AP ipi structure */
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struct vow_ipi_receive_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_length;
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unsigned int msg_data[VOW_IPI_RECEIVE_LENGTH];
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};
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/* SCP -> AP ipi ack structure */
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struct vow_ipi_ack_info {
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unsigned char msg_id;
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unsigned char msg_need_ack;
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unsigned char param1;
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unsigned char param2;
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unsigned int msg_data;
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};
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/* function */
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unsigned int vow_check_scp_status(void);
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void vow_ipi_register(void (*ipi_rx_call)(unsigned int, void *),
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bool (*ipi_tx_ack_call)(unsigned int, unsigned int));
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bool vow_ipi_send(unsigned int msg_id,
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unsigned int payload_len,
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unsigned int *payload,
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unsigned int need_ack);
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#endif /*__VOW_SCP_H__ */
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