/*
 * Copyright (c) 2019-2020, Intel Corporation. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef SOCFPGA_MBOX_H
#define SOCFPGA_MBOX_H

#include <lib/utils_def.h>


#define MBOX_OFFSET			0xffa30000

#define MBOX_ATF_CLIENT_ID		0x1U
#define MBOX_MAX_JOB_ID			0xFU
#define MBOX_MAX_IND_JOB_ID		(MBOX_MAX_JOB_ID - 1U)
#define MBOX_JOB_ID			MBOX_MAX_JOB_ID


/* Mailbox Shared Memory Register Map */
#define MBOX_CIN			0x00
#define MBOX_ROUT			0x04
#define MBOX_URG			0x08
#define MBOX_INT			0x0C
#define MBOX_COUT			0x20
#define MBOX_RIN			0x24
#define MBOX_STATUS			0x2C
#define MBOX_CMD_BUFFER			0x40
#define MBOX_RESP_BUFFER		0xC0

/* Mailbox SDM doorbell */
#define MBOX_DOORBELL_TO_SDM		0x400
#define MBOX_DOORBELL_FROM_SDM		0x480


/* Mailbox commands */

#define MBOX_CMD_NOOP			0x00
#define MBOX_CMD_SYNC			0x01
#define MBOX_CMD_RESTART		0x02
#define MBOX_CMD_CANCEL			0x03
#define MBOX_CMD_GET_IDCODE		0x10
#define MBOX_CMD_REBOOT_HPS		0x47

/* Reconfiguration Commands */
#define MBOX_CONFIG_STATUS		0x04
#define MBOX_RECONFIG			0x06
#define MBOX_RECONFIG_DATA		0x08
#define MBOX_RECONFIG_STATUS		0x09

/* QSPI Commands */
#define MBOX_CMD_QSPI_OPEN		0x32
#define MBOX_CMD_QSPI_CLOSE		0x33
#define MBOX_CMD_QSPI_SET_CS		0x34
#define MBOX_CMD_QSPI_DIRECT		0x3B

/* RSU Commands */
#define MBOX_GET_SUBPARTITION_TABLE	0x5A
#define MBOX_RSU_STATUS			0x5B
#define MBOX_RSU_UPDATE			0x5C
#define MBOX_HPS_STAGE_NOTIFY		0x5D


/* Mailbox Definitions */

#define CMD_DIRECT			0
#define CMD_INDIRECT			1
#define CMD_CASUAL			0
#define CMD_URGENT			1

#define MBOX_RESP_BUFFER_SIZE		16
#define MBOX_CMD_BUFFER_SIZE		32

/* Execution states for HPS_STAGE_NOTIFY */
#define HPS_EXECUTION_STATE_FSBL	0
#define HPS_EXECUTION_STATE_SSBL	1
#define HPS_EXECUTION_STATE_OS		2

/* Status Response */
#define MBOX_RET_OK			0
#define MBOX_RET_ERROR			-1
#define MBOX_NO_RESPONSE		-2
#define MBOX_WRONG_ID			-3
#define MBOX_BUFFER_FULL		-4
#define MBOX_TIMEOUT			-2047

/* Reconfig Status Response */
#define RECONFIG_STATUS_STATE				0
#define RECONFIG_STATUS_PIN_STATUS			2
#define RECONFIG_STATUS_SOFTFUNC_STATUS			3
#define PIN_STATUS_NSTATUS				(U(1) << 31)
#define SOFTFUNC_STATUS_SEU_ERROR			(1 << 3)
#define SOFTFUNC_STATUS_INIT_DONE			(1 << 1)
#define SOFTFUNC_STATUS_CONF_DONE			(1 << 0)
#define MBOX_CFGSTAT_STATE_IDLE				0x00000000
#define MBOX_CFGSTAT_STATE_CONFIG			0x10000000
#define MBOX_CFGSTAT_STATE_FAILACK			0x08000000
#define MBOX_CFGSTAT_STATE_ERROR_INVALID		0xf0000001
#define MBOX_CFGSTAT_STATE_ERROR_CORRUPT		0xf0000002
#define MBOX_CFGSTAT_STATE_ERROR_AUTH			0xf0000003
#define MBOX_CFGSTAT_STATE_ERROR_CORE_IO		0xf0000004
#define MBOX_CFGSTAT_STATE_ERROR_HARDWARE		0xf0000005
#define MBOX_CFGSTAT_STATE_ERROR_FAKE			0xf0000006
#define MBOX_CFGSTAT_STATE_ERROR_BOOT_INFO		0xf0000007
#define MBOX_CFGSTAT_STATE_ERROR_QSPI_ERROR		0xf0000008


/* Mailbox Macros */

/* Mailbox interrupt flags and masks */
#define MBOX_INT_FLAG_COE		0x1
#define MBOX_INT_FLAG_RIE		0x2
#define MBOX_INT_FLAG_UAE		0x100
#define MBOX_COE_BIT(INTERRUPT)		((INTERRUPT) & 0x3)
#define MBOX_UAE_BIT(INTERRUPT)		(((INTERRUPT) & (1<<8)))

/* Mailbox response and status */
#define MBOX_RESP_ERR(BUFFER)		((BUFFER) & 0x00000fff)
#define MBOX_RESP_LEN(BUFFER)		(((BUFFER) & 0x007ff000) >> 12)
#define MBOX_RESP_CLIENT_ID(BUFFER)	(((BUFFER) & 0xf0000000) >> 28)
#define MBOX_RESP_JOB_ID(BUFFER)	(((BUFFER) & 0x0f000000) >> 24)
#define MBOX_STATUS_UA_MASK		(1<<8)

/* Mailbox command and response */
#define MBOX_CLIENT_ID_CMD(CLIENT_ID)	((CLIENT_ID) << 28)
#define MBOX_JOB_ID_CMD(JOB_ID)		(JOB_ID<<24)
#define MBOX_CMD_LEN_CMD(CMD_LEN)	((CMD_LEN) << 12)
#define MBOX_INDIRECT(val)		((val) << 11)
#define MBOX_CMD_MASK(header)		((header) & 0x7ff)

/* RSU Macros */
#define RSU_VERSION_ACMF		BIT(8)
#define RSU_VERSION_ACMF_MASK		0xff00


/* Mailbox Function Definitions */

void mailbox_set_int(uint32_t interrupt_input);
int mailbox_init(void);
void mailbox_set_qspi_close(void);
void mailbox_set_qspi_open(void);
void mailbox_set_qspi_direct(void);

int mailbox_send_cmd(uint32_t job_id, uint32_t cmd, uint32_t *args,
			unsigned int len, uint32_t urgent, uint32_t *response,
			unsigned int resp_len);
int mailbox_send_cmd_async(uint32_t *job_id, uint32_t cmd, uint32_t *args,
			unsigned int len, unsigned int indirect);
int mailbox_read_response(uint32_t *job_id, uint32_t *response,
			unsigned int resp_len);
unsigned int iterate_resp(uint32_t mbox_resp_len, uint32_t *resp_buf,
			unsigned int resp_len);

void mailbox_reset_cold(void);
void mailbox_clear_response(void);

int intel_mailbox_get_config_status(uint32_t cmd);
int intel_mailbox_is_fpga_not_ready(void);

int mailbox_rsu_get_spt_offset(uint32_t *resp_buf, uint32_t resp_buf_len);
int mailbox_rsu_status(uint32_t *resp_buf, uint32_t resp_buf_len);
int mailbox_rsu_update(uint32_t *flash_offset);
int mailbox_hps_stage_notify(uint32_t execution_stage);

#endif /* SOCFPGA_MBOX_H */