/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Support for Intel Camera Imaging ISP subsystem.
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* Copyright (c) 2010 - 2015, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _IA_CSS_BUFQ_H
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#define _IA_CSS_BUFQ_H
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#include <type_support.h>
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#include "ia_css_bufq_comm.h"
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#include "ia_css_buffer.h"
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#include "ia_css_err.h"
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#define BUFQ_EVENT_SIZE 4
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/**
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* @brief Query the internal frame ID.
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*
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* @param[in] key The query key.
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* @param[out] val The query value.
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*
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* @return
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* true, if the query succeeds;
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* false, if the query fails.
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*/
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bool ia_css_query_internal_queue_id(
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enum ia_css_buffer_type buf_type,
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unsigned int thread_id,
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enum sh_css_queue_id *val
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);
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/**
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* @brief Map buffer type to a internal queue id.
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*
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* @param[in] thread id Thread in which the buffer type has to be mapped or unmapped
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* @param[in] buf_type buffer type.
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* @param[in] map boolean flag to specify map or unmap
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* @return none
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*/
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void ia_css_queue_map(
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unsigned int thread_id,
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enum ia_css_buffer_type buf_type,
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bool map
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);
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/**
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* @brief Initialize buffer type to a queue id mapping
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* @return none
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*/
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void ia_css_queue_map_init(void);
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/**
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* @brief initializes bufq module
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* It create instances of
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* -host to SP buffer queue which is a list with predefined size,
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* MxN queues where M is the number threads and N is the number queues per thread
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*-SP to host buffer queue , is a list with N queues
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*-host to SP event communication queue
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* -SP to host event communication queue
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* -queue for tagger commands
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* @return none
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*/
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void ia_css_bufq_init(void);
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/**
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* @brief Enqueues an item into host to SP buffer queue
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*
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* @param thread_index[in] Thread in which the item to be enqueued
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*
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* @param queue_id[in] Index of the queue in the specified thread
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* @param item[in] Object to enqueue.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_enqueue_buffer(
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int thread_index,
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int queue_id,
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uint32_t item);
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/**
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* @brief Dequeues an item from SP to host buffer queue.
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*
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* @param queue_id[in] Specifies the index of the queue in the list where
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* the item has to be read.
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* @paramitem [out] Object to be dequeued into this item.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_dequeue_buffer(
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int queue_id,
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uint32_t *item);
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/**
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* @brief Enqueue an event item into host to SP communication event queue.
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*
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* @param[in] evt_id The event ID.
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* @param[in] evt_payload_0 The event payload.
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* @param[in] evt_payload_1 The event payload.
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* @param[in] evt_payload_2 The event payload.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_enqueue_psys_event(
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u8 evt_id,
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u8 evt_payload_0,
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u8 evt_payload_1,
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uint8_t evt_payload_2
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);
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/**
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* @brief Dequeue an item from SP to host communication event queue.
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*
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* @param item Object to be dequeued into this item.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_dequeue_psys_event(
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u8 item[BUFQ_EVENT_SIZE]
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);
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/**
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* @brief Enqueue an event item into host to SP EOF event queue.
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*
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* @param[in] evt_id The event ID.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_enqueue_isys_event(
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uint8_t evt_id);
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/**
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* @brief Dequeue an item from SP to host communication EOF event queue.
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*
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* @param item Object to be dequeued into this item.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_dequeue_isys_event(
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u8 item[BUFQ_EVENT_SIZE]);
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/**
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* @brief Enqueue a tagger command item into tagger command queue..
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*
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* @param item Object to be enqueue.
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_enqueue_tag_cmd(
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uint32_t item);
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/**
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* @brief Uninitializes bufq module.
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*
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* @return 0 or error code upon error.
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*
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*/
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int ia_css_bufq_deinit(void);
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/**
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* @brief Dump queue states
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*
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* @return None
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*
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*/
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void ia_css_bufq_dump_queue_info(void);
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#endif /* _IA_CSS_BUFQ_H */
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