1 /* 2 * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without modification, 5 * are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright notice, this list of 8 * conditions and the following disclaimer. 9 * 10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 11 * of conditions and the following disclaimer in the documentation and/or other materials 12 * provided with the distribution. 13 * 14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific prior written 16 * permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _FBMEM_H 32 #define _FBMEM_H 33 34 #include <stdint.h> 35 #include <stdlib.h> 36 #include "sys/types.h" 37 #include "sys/stat.h" 38 #ifdef LOSCFG_LIBC_NEWLIB 39 #include "errno.h" 40 #else 41 #include "bits/errno.h" 42 #endif 43 #include "los_list.h" 44 #include "los_interrupt.h" 45 #include "los_debug.h" 46 #include "los_task.h" 47 #include "los_mux.h" 48 49 #define PATH_MAX 256 50 #define V_CREATE (1 << 0) 51 #define V_DUMMY (1 << 2) 52 53 #ifndef OK 54 #define OK 0 55 #endif 56 57 struct fb_mem { 58 uint32_t hash; /* vnode hash */ 59 uint uid; /* uid for dac */ 60 void *data; /* private data */ 61 }; 62 63 int FbMemInit(void); 64 int FbMemHold(void); 65 int FbMemDrop(void); 66 int FbMemLookup(const char *key, struct fb_mem **result, uint32_t flags); 67 int register_driver(const char *key, void *prev); 68 int unregister_driver(const char *key); 69 70 #endif