/* SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright(c) 2018 Intel Corporation. All rights reserved.
 *
 * Author: Tomasz Lauda <tomasz.lauda@linux.intel.com>
 */

/**
 * \file include/rtos/idc.h
 * \brief IDC header file
 * \authors Tomasz Lauda <tomasz.lauda@linux.intel.com>
 */

#ifndef __XTOS_RTOS_IDC_H__
#define __XTOS_RTOS_IDC_H__

#include <arch/drivers/idc.h>
#include <platform/drivers/idc.h>
#include <rtos/task.h>
#include <sof/trace/trace.h>
#include <user/trace.h>
#include <stdint.h>
#include <rtos/cache.h>

/** \brief IDC send blocking flag. */
#define IDC_BLOCKING		0

/** \brief IDC send non-blocking flag. */
#define IDC_NON_BLOCKING	1

/** \brief IDC send core power up flag. */
#define IDC_POWER_UP		2

/** \brief IDC send core power down flag. */
#define IDC_POWER_DOWN		3

/** \brief IDC send timeout in microseconds. */
#define IDC_TIMEOUT	10000

/** \brief IDC task deadline. */
#define IDC_DEADLINE	100

/** \brief ROM wake version parsed by ROM during core wake up. */
#define IDC_ROM_WAKE_VERSION	0x2

/** \brief IDC message type. */
#define IDC_TYPE_SHIFT		24
#define IDC_TYPE_MASK		0x7f
#define IDC_TYPE(x)		(((x) & IDC_TYPE_MASK) << IDC_TYPE_SHIFT)

/** \brief IDC message header. */
#define IDC_HEADER_MASK		0xffffff
#define IDC_HEADER(x)		((x) & IDC_HEADER_MASK)

/** \brief IDC message extension. */
#define IDC_EXTENSION_MASK	0x3fffffff
#define IDC_EXTENSION(x)	((x) & IDC_EXTENSION_MASK)

/** \brief IDC power up message. */
#define IDC_MSG_POWER_UP	(IDC_TYPE(0x1) | \
					IDC_HEADER(IDC_ROM_WAKE_VERSION))
#define IDC_MSG_POWER_UP_EXT	IDC_EXTENSION(SOF_TEXT_START >> 2)

/** \brief IDC power down message. */
#define IDC_MSG_POWER_DOWN	IDC_TYPE(0x2)
#define IDC_MSG_POWER_DOWN_EXT	IDC_EXTENSION(0x0)

/** \brief IDC notify message. */
#define IDC_MSG_NOTIFY		IDC_TYPE(0x3)
#define IDC_MSG_NOTIFY_EXT	IDC_EXTENSION(0x0)

/** \brief IDC IPC processing message. */
#define IDC_MSG_IPC		IDC_TYPE(0x4)
#define IDC_MSG_IPC_EXT		IDC_EXTENSION(0x0)

/** \brief IDC component params message. */
#define IDC_MSG_PARAMS		IDC_TYPE(0x5)
#define IDC_MSG_PARAMS_EXT(x)	IDC_EXTENSION(x)

/** \brief IDC component prepare message. */
#define IDC_MSG_PREPARE		IDC_TYPE(0x6)
#define IDC_MSG_PREPARE_EXT(x)	IDC_EXTENSION(x)

/** \brief IDC component trigger message. */
#define IDC_MSG_TRIGGER		IDC_TYPE(0x7)
#define IDC_MSG_TRIGGER_EXT(x)	IDC_EXTENSION(x)

/** \brief IDC component reset message. */
#define IDC_MSG_RESET		IDC_TYPE(0x8)
#define IDC_MSG_RESET_EXT(x)	IDC_EXTENSION(x)

/** \brief IDC prepare D0ix message. */
#define IDC_MSG_PREPARE_D0ix		IDC_TYPE(0x9)
#define IDC_MSG_PREPARE_D0ix_EXT	IDC_EXTENSION(0x0)

/** \brief IDC secondary core crashed notify message. */
#define IDC_MSG_SECONDARY_CORE_CRASHED		IDC_TYPE(0xA)
#define IDC_MSG_SECONDARY_CORE_CRASHED_EXT(x)	IDC_EXTENSION(x)

/** \brief IDC process async msg */
#define IDC_MSG_AMS	IDC_TYPE(0xB)
#define IDC_MSG_AMS_EXT	IDC_EXTENSION(0x0)

#define IDC_MSG_BIND IDC_TYPE(0xD)
#define IDC_MSG_UNBIND IDC_TYPE(0xE)
#define IDC_MSG_GET_ATTRIBUTE IDC_TYPE(0xF)

#define IDC_HEADER_TO_AMS_SLOT_MASK(x)	(x & 0xFFFF)

/** \brief IDC_MSG_SECONDARY_CORE_CRASHED header fields. */
#define IDC_SCC_CORE_SHIFT		0
#define IDC_SCC_CORE_MASK		0xff
#define IDC_SCC_CORE(x)			(((x) & IDC_SCC_CORE_MASK) << IDC_SCC_CORE_SHIFT)

#define IDC_SCC_REASON_SHIFT		8
#define IDC_SCC_REASON_MASK		0xff
#define IDC_SCC_REASON(x)		(((x) & IDC_SCC_REASON_MASK) << IDC_SCC_REASON_SHIFT)

/** \brief Secondary core crash reasons. */
#define IDC_SCC_REASON_WATCHDOG		0x00
#define IDC_SCC_REASON_EXCEPTION	0x01

/** \brief Decodes IDC message type. */
#define iTS(x)	(((x) >> IDC_TYPE_SHIFT) & IDC_TYPE_MASK)

/** \brief Max IDC message payload size in bytes. */
#define IDC_MAX_PAYLOAD_SIZE	(DCACHE_LINE_SIZE * 2)

/** \brief IDC free function flags */
#define IDC_FREE_IRQ_ONLY	BIT(0)	/**< disable only irqs */

/** \brief IDC message payload. */
struct idc_payload {
	uint8_t data[IDC_MAX_PAYLOAD_SIZE];
};

/** \brief IDC message. */
struct idc_msg {
	uint32_t header;	/**< header value */
	uint32_t extension;	/**< extension value */
	uint32_t core;		/**< core id */
	uint32_t size;		/**< payload size in bytes */
	void *payload;		/**< pointer to payload data */
};

/** \brief IDC data. */
struct idc {
	uint32_t busy_bit_mask;		/**< busy interrupt mask */
	struct idc_msg received_msg;	/**< received message */
	struct task idc_task;		/**< IDC processing task */
	struct idc_payload *payload;
	int irq;
};

/* idc trace context, used by multiple units */
extern struct tr_ctx idc_tr;

static inline struct idc_payload *idc_payload_get(struct idc *idc,
						  uint32_t core)
{
	return idc->payload + core;
}

void idc_enable_interrupts(int target_core, int source_core);

void idc_free(uint32_t flags);

int platform_idc_init(void);

int platform_idc_restore(void);

enum task_state idc_do_cmd(void *data);

void idc_cmd(struct idc_msg *msg);

int idc_wait_in_blocking_mode(uint32_t target_core, bool (*cond)(int));

int idc_msg_status_get(uint32_t core);

void idc_init_thread(void);

#endif /* __XTOS_RTOS_IDC_H__ */