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
event_wait_for(const event_ID_t ID)27 STORAGE_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
cnd_event_wait_for(const event_ID_t ID,const bool cnd)35 STORAGE_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
event_receive_token(const event_ID_t ID)43 STORAGE_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
event_send_token(const event_ID_t ID,const hrt_data token)50 STORAGE_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
is_event_pending(const event_ID_t ID)58 STORAGE_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
can_event_send_token(const event_ID_t ID)68 STORAGE_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