1 /* 2 * Copyright 2012 Red Hat Inc. 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 shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include <core/object.h> 25 #include <core/client.h> 26 #include <core/engine.h> 27 28 struct nvkm_object * 29 nvkm_object_search(struct nvkm_client *client, u64 handle, 30 const struct nvkm_object_func *func) 31 { 32 struct nvkm_object *object; 33 34 if (handle) { 35 struct rb_node *node = client->objroot.rb_node; 36 while (node) { 37 object = rb_entry(node, typeof(*object), node); 38 if (handle < object->object) 39 node = node->rb_left; 40 else 41 if (handle > object->object) 42 node = node->rb_right; 43 else 44 goto done; 45 } 46 return ERR_PTR(-ENOENT); 47 } else { 48 object = &client->object; 49 } 50 51 done: 52 if (unlikely(func && object->func != func)) 53 return ERR_PTR(-EINVAL); 54 return object; 55 } 56 57 void 58 nvkm_object_remove(struct nvkm_object *object) 59 { 60 if (!RB_EMPTY_NODE(&object->node)) 61 rb_erase(&object->node, &object->client->objroot); 62 } 63 64 bool 65 nvkm_object_insert(struct nvkm_object *object) 66 { 67 struct rb_node **ptr = &object->client->objroot.rb_node; 68 struct rb_node *parent = NULL; 69 70 while (*ptr) { 71 struct nvkm_object *this = rb_entry(*ptr, typeof(*this), node); 72 parent = *ptr; 73 if (object->object < this->object) 74 ptr = &parent->rb_left; 75 else 76 if (object->object > this->object) 77 ptr = &parent->rb_right; 78 else 79 return false; 80 } 81 82 rb_link_node(&object->node, parent, ptr); 83 rb_insert_color(&object->node, &object->client->objroot); 84 return true; 85 } 86 87 int 88 nvkm_object_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 89 { 90 if (likely(object->func->mthd)) 91 return object->func->mthd(object, mthd, data, size); 92 return -ENODEV; 93 } 94 95 int 96 nvkm_object_ntfy(struct nvkm_object *object, u32 mthd, 97 struct nvkm_event **pevent) 98 { 99 if (likely(object->func->ntfy)) 100 return object->func->ntfy(object, mthd, pevent); 101 return -ENODEV; 102 } 103 104 int 105 nvkm_object_map(struct nvkm_object *object, u64 *addr, u32 *size) 106 { 107 if (likely(object->func->map)) 108 return object->func->map(object, addr, size); 109 return -ENODEV; 110 } 111 112 int 113 nvkm_object_rd08(struct nvkm_object *object, u64 addr, u8 *data) 114 { 115 if (likely(object->func->rd08)) 116 return object->func->rd08(object, addr, data); 117 return -ENODEV; 118 } 119 120 int 121 nvkm_object_rd16(struct nvkm_object *object, u64 addr, u16 *data) 122 { 123 if (likely(object->func->rd16)) 124 return object->func->rd16(object, addr, data); 125 return -ENODEV; 126 } 127 128 int 129 nvkm_object_rd32(struct nvkm_object *object, u64 addr, u32 *data) 130 { 131 if (likely(object->func->rd32)) 132 return object->func->rd32(object, addr, data); 133 return -ENODEV; 134 } 135 136 int 137 nvkm_object_wr08(struct nvkm_object *object, u64 addr, u8 data) 138 { 139 if (likely(object->func->wr08)) 140 return object->func->wr08(object, addr, data); 141 return -ENODEV; 142 } 143 144 int 145 nvkm_object_wr16(struct nvkm_object *object, u64 addr, u16 data) 146 { 147 if (likely(object->func->wr16)) 148 return object->func->wr16(object, addr, data); 149 return -ENODEV; 150 } 151 152 int 153 nvkm_object_wr32(struct nvkm_object *object, u64 addr, u32 data) 154 { 155 if (likely(object->func->wr32)) 156 return object->func->wr32(object, addr, data); 157 return -ENODEV; 158 } 159 160 int 161 nvkm_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *gpuobj, 162 int align, struct nvkm_gpuobj **pgpuobj) 163 { 164 if (object->func->bind) 165 return object->func->bind(object, gpuobj, align, pgpuobj); 166 return -ENODEV; 167 } 168 169 int 170 nvkm_object_fini(struct nvkm_object *object, bool suspend) 171 { 172 const char *action = suspend ? "suspend" : "fini"; 173 struct nvkm_object *child; 174 s64 time; 175 int ret; 176 177 nvif_debug(object, "%s children...\n", action); 178 time = ktime_to_us(ktime_get()); 179 list_for_each_entry(child, &object->tree, head) { 180 ret = nvkm_object_fini(child, suspend); 181 if (ret && suspend) 182 goto fail_child; 183 } 184 185 nvif_debug(object, "%s running...\n", action); 186 if (object->func->fini) { 187 ret = object->func->fini(object, suspend); 188 if (ret) { 189 nvif_error(object, "%s failed with %d\n", action, ret); 190 if (suspend) 191 goto fail; 192 } 193 } 194 195 time = ktime_to_us(ktime_get()) - time; 196 nvif_debug(object, "%s completed in %lldus\n", action, time); 197 return 0; 198 199 fail: 200 if (object->func->init) { 201 int rret = object->func->init(object); 202 if (rret) 203 nvif_fatal(object, "failed to restart, %d\n", rret); 204 } 205 fail_child: 206 list_for_each_entry_continue_reverse(child, &object->tree, head) { 207 nvkm_object_init(child); 208 } 209 return ret; 210 } 211 212 int 213 nvkm_object_init(struct nvkm_object *object) 214 { 215 struct nvkm_object *child; 216 s64 time; 217 int ret; 218 219 nvif_debug(object, "init running...\n"); 220 time = ktime_to_us(ktime_get()); 221 if (object->func->init) { 222 ret = object->func->init(object); 223 if (ret) 224 goto fail; 225 } 226 227 nvif_debug(object, "init children...\n"); 228 list_for_each_entry(child, &object->tree, head) { 229 ret = nvkm_object_init(child); 230 if (ret) 231 goto fail_child; 232 } 233 234 time = ktime_to_us(ktime_get()) - time; 235 nvif_debug(object, "init completed in %lldus\n", time); 236 return 0; 237 238 fail_child: 239 list_for_each_entry_continue_reverse(child, &object->tree, head) 240 nvkm_object_fini(child, false); 241 fail: 242 nvif_error(object, "init failed with %d\n", ret); 243 if (object->func->fini) 244 object->func->fini(object, false); 245 return ret; 246 } 247 248 void * 249 nvkm_object_dtor(struct nvkm_object *object) 250 { 251 struct nvkm_object *child, *ctemp; 252 void *data = object; 253 s64 time; 254 255 nvif_debug(object, "destroy children...\n"); 256 time = ktime_to_us(ktime_get()); 257 list_for_each_entry_safe(child, ctemp, &object->tree, head) { 258 nvkm_object_del(&child); 259 } 260 261 nvif_debug(object, "destroy running...\n"); 262 if (object->func->dtor) 263 data = object->func->dtor(object); 264 nvkm_engine_unref(&object->engine); 265 time = ktime_to_us(ktime_get()) - time; 266 nvif_debug(object, "destroy completed in %lldus...\n", time); 267 return data; 268 } 269 270 void 271 nvkm_object_del(struct nvkm_object **pobject) 272 { 273 struct nvkm_object *object = *pobject; 274 if (object && !WARN_ON(!object->func)) { 275 *pobject = nvkm_object_dtor(object); 276 nvkm_object_remove(object); 277 list_del(&object->head); 278 kfree(*pobject); 279 *pobject = NULL; 280 } 281 } 282 283 void 284 nvkm_object_ctor(const struct nvkm_object_func *func, 285 const struct nvkm_oclass *oclass, struct nvkm_object *object) 286 { 287 object->func = func; 288 object->client = oclass->client; 289 object->engine = nvkm_engine_ref(oclass->engine); 290 object->oclass = oclass->base.oclass; 291 object->handle = oclass->handle; 292 object->route = oclass->route; 293 object->token = oclass->token; 294 object->object = oclass->object; 295 INIT_LIST_HEAD(&object->head); 296 INIT_LIST_HEAD(&object->tree); 297 RB_CLEAR_NODE(&object->node); 298 WARN_ON(IS_ERR(object->engine)); 299 } 300 301 int 302 nvkm_object_new_(const struct nvkm_object_func *func, 303 const struct nvkm_oclass *oclass, void *data, u32 size, 304 struct nvkm_object **pobject) 305 { 306 if (size == 0) { 307 if (!(*pobject = kzalloc(sizeof(**pobject), GFP_KERNEL))) 308 return -ENOMEM; 309 nvkm_object_ctor(func, oclass, *pobject); 310 return 0; 311 } 312 return -ENOSYS; 313 } 314 315 static const struct nvkm_object_func 316 nvkm_object_func = { 317 }; 318 319 int 320 nvkm_object_new(const struct nvkm_oclass *oclass, void *data, u32 size, 321 struct nvkm_object **pobject) 322 { 323 const struct nvkm_object_func *func = 324 oclass->base.func ? oclass->base.func : &nvkm_object_func; 325 return nvkm_object_new_(func, oclass, data, size, pobject); 326 } 327