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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2010 - 2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef __QUEUE_ACCESS_H
#define __QUEUE_ACCESS_H
#include <linux/errno.h>
#include <type_support.h>
#include <ia_css_queue_comm.h>
#include <ia_css_circbuf.h>
#define QUEUE_IGNORE_START_FLAG 0x0001
#define QUEUE_IGNORE_END_FLAG 0x0002
#define QUEUE_IGNORE_SIZE_FLAG 0x0004
#define QUEUE_IGNORE_STEP_FLAG 0x0008
#define QUEUE_IGNORE_DESC_FLAGS_MAX 0x000f
#define QUEUE_IGNORE_SIZE_START_STEP_FLAGS \
(QUEUE_IGNORE_SIZE_FLAG | \
QUEUE_IGNORE_START_FLAG | \
QUEUE_IGNORE_STEP_FLAG)
#define QUEUE_IGNORE_SIZE_END_STEP_FLAGS \
(QUEUE_IGNORE_SIZE_FLAG | \
QUEUE_IGNORE_END_FLAG | \
QUEUE_IGNORE_STEP_FLAG)
#define QUEUE_IGNORE_START_END_STEP_FLAGS \
(QUEUE_IGNORE_START_FLAG | \
QUEUE_IGNORE_END_FLAG | \
QUEUE_IGNORE_STEP_FLAG)
#define QUEUE_CB_DESC_INIT(cb_desc) \
do { \
(cb_desc)->size = 0; \
(cb_desc)->step = 0; \
(cb_desc)->start = 0; \
(cb_desc)->end = 0; \
} while (0)
struct ia_css_queue {
u8 type; /* Specify remote/local type of access */
u8 location; /* Cell location for queue */
u8 proc_id; /* Processor id for queue access */
union {
ia_css_circbuf_t cb_local;
struct {
u32 cb_desc_addr; /*Circbuf desc address for remote queues*/
u32 cb_elems_addr; /*Circbuf elements addr for remote queue*/
} remote;
} desc;
};
int ia_css_queue_load(
struct ia_css_queue *rdesc,
ia_css_circbuf_desc_t *cb_desc,
uint32_t ignore_desc_flags);
int ia_css_queue_store(
struct ia_css_queue *rdesc,
ia_css_circbuf_desc_t *cb_desc,
uint32_t ignore_desc_flags);
int ia_css_queue_item_load(
struct ia_css_queue *rdesc,
u8 position,
ia_css_circbuf_elem_t *item);
int ia_css_queue_item_store(
struct ia_css_queue *rdesc,
u8 position,
ia_css_circbuf_elem_t *item);
#endif /* __QUEUE_ACCESS_H */
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