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| Rev | Author | Line No. | Line |
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| 4358 | Serge | 1 | /* |
| 2 | * Copyright © 2011 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 19 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 20 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 22 | * DEALINGS IN THE SOFTWARE. |
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| 23 | * |
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| 24 | * Authors: |
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| 25 | * Benjamin Franzke |
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| 26 | */ |
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| 27 | |||
| 28 | #include |
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| 29 | #include |
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| 30 | #include |
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| 31 | #include |
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| 32 | #include |
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| 33 | //#include |
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| 34 | |||
| 35 | #include "backend.h" |
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| 36 | |||
| 37 | #define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0])) |
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| 38 | |||
| 39 | extern const struct gbm_backend gbm_dri_backend; |
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| 40 | |||
| 41 | struct backend_desc { |
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| 42 | const char *name; |
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| 43 | const struct gbm_backend *builtin; |
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| 44 | }; |
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| 45 | |||
| 46 | static const struct backend_desc backends[] = { |
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| 5080 | serge | 47 | { "gbm_dri.dll", &gbm_dri_backend }, |
| 48 | { "gbm_gallium_drm.dll", NULL }, |
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| 4358 | Serge | 49 | }; |
| 50 | |||
| 51 | #if 0 |
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| 52 | static const void * |
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| 53 | load_backend(const struct backend_desc *backend) |
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| 54 | { |
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| 55 | char path[PATH_MAX]; |
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| 56 | const void *init = NULL; |
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| 57 | void *module; |
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| 58 | const char *name; |
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| 59 | const char *entrypoint = "gbm_backend"; |
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| 60 | |||
| 61 | if (backend == NULL) |
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| 62 | return NULL; |
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| 63 | |||
| 64 | name = backend->name; |
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| 65 | |||
| 66 | if (backend->builtin) { |
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| 67 | init = backend->builtin; |
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| 68 | } else { |
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| 69 | #if 0 |
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| 70 | if (name[0] != '/') |
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| 71 | snprintf(path, sizeof path, MODULEDIR "/%s", name); |
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| 72 | else |
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| 73 | snprintf(path, sizeof path, "%s", name); |
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| 74 | |||
| 75 | module = dlopen(path, RTLD_NOW | RTLD_GLOBAL); |
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| 76 | if (!module) { |
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| 77 | fprintf(stderr, |
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| 78 | "failed to load module: %s\n", dlerror()); |
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| 79 | return NULL; |
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| 80 | } |
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| 81 | |||
| 82 | init = dlsym(module, entrypoint); |
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| 83 | if (!init) |
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| 84 | #endif |
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| 85 | return NULL; |
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| 86 | } |
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| 87 | |||
| 88 | return init; |
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| 89 | } |
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| 90 | |||
| 91 | static const struct backend_desc * |
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| 92 | find_backend(const char *name) |
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| 93 | { |
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| 94 | const struct backend_desc *backend = NULL; |
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| 95 | int i; |
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| 96 | |||
| 97 | for (i = 0; i < ARRAY_SIZE(backends); ++i) { |
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| 98 | if (strcmp(backends[i].name, name) == 0) { |
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| 99 | backend = &backends[i]; |
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| 100 | break; |
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| 101 | } |
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| 102 | } |
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| 103 | |||
| 104 | return backend; |
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| 105 | } |
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| 106 | #endif |
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| 107 | |||
| 108 | struct gbm_device * |
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| 109 | _gbm_create_device(int fd) |
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| 110 | { |
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| 111 | const struct gbm_backend *backend = NULL; |
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| 112 | struct gbm_device *dev = NULL; |
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| 113 | |||
| 114 | #if 0 |
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| 115 | int i; |
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| 116 | const char *b; |
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| 117 | |||
| 118 | b = getenv("GBM_BACKEND"); |
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| 119 | if (b) |
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| 120 | backend = load_backend(find_backend(b)); |
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| 121 | |||
| 122 | if (backend) |
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| 123 | dev = backend->create_device(fd); |
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| 124 | |||
| 125 | for (i = 0; i < ARRAY_SIZE(backends) && dev == NULL; ++i) { |
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| 126 | backend = load_backend(&backends[i]); |
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| 127 | if (backend == NULL) |
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| 128 | continue; |
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| 129 | |||
| 130 | dev = backend->create_device(fd); |
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| 131 | } |
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| 132 | #endif |
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| 133 | |||
| 134 | backend = &gbm_dri_backend; |
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| 135 | dev = backend->create_device(fd); |
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| 136 | |||
| 137 | return dev; |
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| 138 | } |