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 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 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 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 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 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 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