1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Support for Intel Camera Imaging ISP subsystem.
4 * Copyright (c) 2015, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13 * more details.
14 */
15
16#ifndef __EVENT_FIFO_PRIVATE_H
17#define __EVENT_FIFO_PRIVATE_H
18
19#include "event_fifo_public.h"
20
21#include "device_access.h"
22
23#include "assert_support.h"
24
25#include <bits.h>			/* _hrt_get_bits() */
26
27STORAGE_CLASS_EVENT_C void event_wait_for(const event_ID_t ID)
28{
29	assert(ID < N_EVENT_ID);
30	assert(event_source_addr[ID] != ((hrt_address) - 1));
31	(void)ia_css_device_load_uint32(event_source_addr[ID]);
32	return;
33}
34
35STORAGE_CLASS_EVENT_C void cnd_event_wait_for(const event_ID_t ID,
36	const bool cnd)
37{
38	if (cnd) {
39		event_wait_for(ID);
40	}
41}
42
43STORAGE_CLASS_EVENT_C hrt_data event_receive_token(const event_ID_t ID)
44{
45	assert(ID < N_EVENT_ID);
46	assert(event_source_addr[ID] != ((hrt_address) - 1));
47	return ia_css_device_load_uint32(event_source_addr[ID]);
48}
49
50STORAGE_CLASS_EVENT_C void event_send_token(const event_ID_t ID,
51	const hrt_data token)
52{
53	assert(ID < N_EVENT_ID);
54	assert(event_sink_addr[ID] != ((hrt_address) - 1));
55	ia_css_device_store_uint32(event_sink_addr[ID], token);
56}
57
58STORAGE_CLASS_EVENT_C bool is_event_pending(const event_ID_t ID)
59{
60	hrt_data	value;
61
62	assert(ID < N_EVENT_ID);
63	assert(event_source_query_addr[ID] != ((hrt_address) - 1));
64	value = ia_css_device_load_uint32(event_source_query_addr[ID]);
65	return !_hrt_get_bit(value, EVENT_QUERY_BIT);
66}
67
68STORAGE_CLASS_EVENT_C bool can_event_send_token(const event_ID_t ID)
69{
70	hrt_data	value;
71
72	assert(ID < N_EVENT_ID);
73	assert(event_sink_query_addr[ID] != ((hrt_address) - 1));
74	value = ia_css_device_load_uint32(event_sink_query_addr[ID]);
75	return !_hrt_get_bit(value, EVENT_QUERY_BIT);
76}
77
78#endif /* __EVENT_FIFO_PRIVATE_H */
79