1 /* 2 * Copyright 2014 Broadcom 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #ifndef VC5_BUFMGR_H 25 #define VC5_BUFMGR_H 26 27 #include <stdint.h> 28 #include "util/u_hash_table.h" 29 #include "util/u_inlines.h" 30 #include "util/list.h" 31 #include "vc5_screen.h" 32 33 struct vc5_context; 34 35 struct vc5_bo { 36 struct pipe_reference reference; 37 struct vc5_screen *screen; 38 void *map; 39 const char *name; 40 uint32_t handle; 41 uint32_t size; 42 43 /* Address of the BO in our page tables. */ 44 uint32_t offset; 45 46 /** Entry in the linked list of buffers freed, by age. */ 47 struct list_head time_list; 48 /** Entry in the per-page-count linked list of buffers freed (by age). */ 49 struct list_head size_list; 50 /** Approximate second when the bo was freed. */ 51 time_t free_time; 52 /** 53 * Whether only our process has a reference to the BO (meaning that 54 * it's safe to reuse it in the BO cache). 55 */ 56 bool private; 57 }; 58 59 struct vc5_bo *vc5_bo_alloc(struct vc5_screen *screen, uint32_t size, 60 const char *name); 61 void vc5_bo_last_unreference(struct vc5_bo *bo); 62 void vc5_bo_last_unreference_locked_timed(struct vc5_bo *bo, time_t time); 63 struct vc5_bo *vc5_bo_open_name(struct vc5_screen *screen, uint32_t name, 64 uint32_t winsys_stride); 65 struct vc5_bo *vc5_bo_open_dmabuf(struct vc5_screen *screen, int fd, 66 uint32_t winsys_stride); 67 bool vc5_bo_flink(struct vc5_bo *bo, uint32_t *name); 68 int vc5_bo_get_dmabuf(struct vc5_bo *bo); 69 70 static inline void 71 vc5_bo_set_reference(struct vc5_bo **old_bo, struct vc5_bo *new_bo) 72 { 73 if (pipe_reference(&(*old_bo)->reference, &new_bo->reference)) 74 vc5_bo_last_unreference(*old_bo); 75 *old_bo = new_bo; 76 } 77 78 static inline struct vc5_bo * 79 vc5_bo_reference(struct vc5_bo *bo) 80 { 81 pipe_reference(NULL, &bo->reference); 82 return bo; 83 } 84 85 static inline void 86 vc5_bo_unreference(struct vc5_bo **bo) 87 { 88 struct vc5_screen *screen; 89 if (!*bo) 90 return; 91 92 if ((*bo)->private) { 93 /* Avoid the mutex for private BOs */ 94 if (pipe_reference(&(*bo)->reference, NULL)) 95 vc5_bo_last_unreference(*bo); 96 } else { 97 screen = (*bo)->screen; 98 mtx_lock(&screen->bo_handles_mutex); 99 100 if (pipe_reference(&(*bo)->reference, NULL)) { 101 util_hash_table_remove(screen->bo_handles, 102 (void *)(uintptr_t)(*bo)->handle); 103 vc5_bo_last_unreference(*bo); 104 } 105 106 mtx_unlock(&screen->bo_handles_mutex); 107 } 108 109 *bo = NULL; 110 } 111 112 static inline void 113 vc5_bo_unreference_locked_timed(struct vc5_bo **bo, time_t time) 114 { 115 if (!*bo) 116 return; 117 118 if (pipe_reference(&(*bo)->reference, NULL)) 119 vc5_bo_last_unreference_locked_timed(*bo, time); 120 *bo = NULL; 121 } 122 123 void * 124 vc5_bo_map(struct vc5_bo *bo); 125 126 void * 127 vc5_bo_map_unsynchronized(struct vc5_bo *bo); 128 129 bool 130 vc5_bo_wait(struct vc5_bo *bo, uint64_t timeout_ns, const char *reason); 131 132 bool 133 vc5_wait_seqno(struct vc5_screen *screen, uint64_t seqno, uint64_t timeout_ns, 134 const char *reason); 135 136 void 137 vc5_bufmgr_destroy(struct pipe_screen *pscreen); 138 139 #endif /* VC5_BUFMGR_H */ 140 141