1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */ 3 4 #include <linux/module.h> 5 #include <linux/of_platform.h> 6 #include <linux/uaccess.h> 7 #include <linux/slab.h> 8 #include <linux/pm_runtime.h> 9 #include <drm/drm_ioctl.h> 10 #include <drm/drm_drv.h> 11 #include <drm/drm_prime.h> 12 #include <drm/lima_drm.h> 13 14 #include "lima_device.h" 15 #include "lima_drv.h" 16 #include "lima_gem.h" 17 #include "lima_vm.h" 18 19 int lima_sched_timeout_ms; 20 uint lima_heap_init_nr_pages = 8; 21 uint lima_max_error_tasks; 22 uint lima_job_hang_limit; 23 24 MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms"); 25 module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444); 26 27 MODULE_PARM_DESC(heap_init_nr_pages, "heap buffer init number of pages"); 28 module_param_named(heap_init_nr_pages, lima_heap_init_nr_pages, uint, 0444); 29 30 MODULE_PARM_DESC(max_error_tasks, "max number of error tasks to save"); 31 module_param_named(max_error_tasks, lima_max_error_tasks, uint, 0644); 32 33 MODULE_PARM_DESC(job_hang_limit, "number of times to allow a job to hang before dropping it (default 0)"); 34 module_param_named(job_hang_limit, lima_job_hang_limit, uint, 0444); 35 36 static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file) 37 { 38 struct drm_lima_get_param *args = data; 39 struct lima_device *ldev = to_lima_dev(dev); 40 41 if (args->pad) 42 return -EINVAL; 43 44 switch (args->param) { 45 case DRM_LIMA_PARAM_GPU_ID: 46 switch (ldev->id) { 47 case lima_gpu_mali400: 48 args->value = DRM_LIMA_PARAM_GPU_ID_MALI400; 49 break; 50 case lima_gpu_mali450: 51 args->value = DRM_LIMA_PARAM_GPU_ID_MALI450; 52 break; 53 default: 54 args->value = DRM_LIMA_PARAM_GPU_ID_UNKNOWN; 55 break; 56 } 57 break; 58 59 case DRM_LIMA_PARAM_NUM_PP: 60 args->value = ldev->pipe[lima_pipe_pp].num_processor; 61 break; 62 63 case DRM_LIMA_PARAM_GP_VERSION: 64 args->value = ldev->gp_version; 65 break; 66 67 case DRM_LIMA_PARAM_PP_VERSION: 68 args->value = ldev->pp_version; 69 break; 70 71 default: 72 return -EINVAL; 73 } 74 75 return 0; 76 } 77 78 static int lima_ioctl_gem_create(struct drm_device *dev, void *data, struct drm_file *file) 79 { 80 struct drm_lima_gem_create *args = data; 81 82 if (args->pad) 83 return -EINVAL; 84 85 if (args->flags & ~(LIMA_BO_FLAG_HEAP)) 86 return -EINVAL; 87 88 if (args->size == 0) 89 return -EINVAL; 90 91 return lima_gem_create_handle(dev, file, args->size, args->flags, &args->handle); 92 } 93 94 static int lima_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file) 95 { 96 struct drm_lima_gem_info *args = data; 97 98 return lima_gem_get_info(file, args->handle, &args->va, &args->offset); 99 } 100 101 static int lima_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file) 102 { 103 struct drm_lima_gem_submit *args = data; 104 struct lima_device *ldev = to_lima_dev(dev); 105 struct lima_drm_priv *priv = file->driver_priv; 106 struct drm_lima_gem_submit_bo *bos; 107 struct lima_sched_pipe *pipe; 108 struct lima_sched_task *task; 109 struct lima_ctx *ctx; 110 struct lima_submit submit = {0}; 111 size_t size; 112 int err = 0; 113 114 if (args->pipe >= lima_pipe_num || args->nr_bos == 0) 115 return -EINVAL; 116 117 if (args->flags & ~(LIMA_SUBMIT_FLAG_EXPLICIT_FENCE)) 118 return -EINVAL; 119 120 pipe = ldev->pipe + args->pipe; 121 if (args->frame_size != pipe->frame_size) 122 return -EINVAL; 123 124 bos = kvcalloc(args->nr_bos, sizeof(*submit.bos) + sizeof(*submit.lbos), GFP_KERNEL); 125 if (!bos) 126 return -ENOMEM; 127 128 size = args->nr_bos * sizeof(*submit.bos); 129 if (copy_from_user(bos, u64_to_user_ptr(args->bos), size)) { 130 err = -EFAULT; 131 goto out0; 132 } 133 134 task = kmem_cache_zalloc(pipe->task_slab, GFP_KERNEL); 135 if (!task) { 136 err = -ENOMEM; 137 goto out0; 138 } 139 140 task->frame = task + 1; 141 if (copy_from_user(task->frame, u64_to_user_ptr(args->frame), args->frame_size)) { 142 err = -EFAULT; 143 goto out1; 144 } 145 146 err = pipe->task_validate(pipe, task); 147 if (err) 148 goto out1; 149 150 ctx = lima_ctx_get(&priv->ctx_mgr, args->ctx); 151 if (!ctx) { 152 err = -ENOENT; 153 goto out1; 154 } 155 156 submit.pipe = args->pipe; 157 submit.bos = bos; 158 submit.lbos = (void *)bos + size; 159 submit.nr_bos = args->nr_bos; 160 submit.task = task; 161 submit.ctx = ctx; 162 submit.flags = args->flags; 163 submit.in_sync[0] = args->in_sync[0]; 164 submit.in_sync[1] = args->in_sync[1]; 165 submit.out_sync = args->out_sync; 166 167 err = lima_gem_submit(file, &submit); 168 169 lima_ctx_put(ctx); 170 out1: 171 if (err) 172 kmem_cache_free(pipe->task_slab, task); 173 out0: 174 kvfree(bos); 175 return err; 176 } 177 178 static int lima_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file) 179 { 180 struct drm_lima_gem_wait *args = data; 181 182 if (args->op & ~(LIMA_GEM_WAIT_READ|LIMA_GEM_WAIT_WRITE)) 183 return -EINVAL; 184 185 return lima_gem_wait(file, args->handle, args->op, args->timeout_ns); 186 } 187 188 static int lima_ioctl_ctx_create(struct drm_device *dev, void *data, struct drm_file *file) 189 { 190 struct drm_lima_ctx_create *args = data; 191 struct lima_drm_priv *priv = file->driver_priv; 192 struct lima_device *ldev = to_lima_dev(dev); 193 194 if (args->_pad) 195 return -EINVAL; 196 197 return lima_ctx_create(ldev, &priv->ctx_mgr, &args->id); 198 } 199 200 static int lima_ioctl_ctx_free(struct drm_device *dev, void *data, struct drm_file *file) 201 { 202 struct drm_lima_ctx_create *args = data; 203 struct lima_drm_priv *priv = file->driver_priv; 204 205 if (args->_pad) 206 return -EINVAL; 207 208 return lima_ctx_free(&priv->ctx_mgr, args->id); 209 } 210 211 static int lima_drm_driver_open(struct drm_device *dev, struct drm_file *file) 212 { 213 int err; 214 struct lima_drm_priv *priv; 215 struct lima_device *ldev = to_lima_dev(dev); 216 217 priv = kzalloc(sizeof(*priv), GFP_KERNEL); 218 if (!priv) 219 return -ENOMEM; 220 221 priv->vm = lima_vm_create(ldev); 222 if (!priv->vm) { 223 err = -ENOMEM; 224 goto err_out0; 225 } 226 227 lima_ctx_mgr_init(&priv->ctx_mgr); 228 229 file->driver_priv = priv; 230 return 0; 231 232 err_out0: 233 kfree(priv); 234 return err; 235 } 236 237 static void lima_drm_driver_postclose(struct drm_device *dev, struct drm_file *file) 238 { 239 struct lima_drm_priv *priv = file->driver_priv; 240 241 lima_ctx_mgr_fini(&priv->ctx_mgr); 242 lima_vm_put(priv->vm); 243 kfree(priv); 244 } 245 246 static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = { 247 DRM_IOCTL_DEF_DRV(LIMA_GET_PARAM, lima_ioctl_get_param, DRM_RENDER_ALLOW), 248 DRM_IOCTL_DEF_DRV(LIMA_GEM_CREATE, lima_ioctl_gem_create, DRM_RENDER_ALLOW), 249 DRM_IOCTL_DEF_DRV(LIMA_GEM_INFO, lima_ioctl_gem_info, DRM_RENDER_ALLOW), 250 DRM_IOCTL_DEF_DRV(LIMA_GEM_SUBMIT, lima_ioctl_gem_submit, DRM_RENDER_ALLOW), 251 DRM_IOCTL_DEF_DRV(LIMA_GEM_WAIT, lima_ioctl_gem_wait, DRM_RENDER_ALLOW), 252 DRM_IOCTL_DEF_DRV(LIMA_CTX_CREATE, lima_ioctl_ctx_create, DRM_RENDER_ALLOW), 253 DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW), 254 }; 255 256 DEFINE_DRM_GEM_FOPS(lima_drm_driver_fops); 257 258 /* 259 * Changelog: 260 * 261 * - 1.1.0 - add heap buffer support 262 */ 263 264 static const struct drm_driver lima_drm_driver = { 265 .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ, 266 .open = lima_drm_driver_open, 267 .postclose = lima_drm_driver_postclose, 268 .ioctls = lima_drm_driver_ioctls, 269 .num_ioctls = ARRAY_SIZE(lima_drm_driver_ioctls), 270 .fops = &lima_drm_driver_fops, 271 .name = "lima", 272 .desc = "lima DRM", 273 .date = "20191231", 274 .major = 1, 275 .minor = 1, 276 .patchlevel = 0, 277 278 .gem_create_object = lima_gem_create_object, 279 .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, 280 }; 281 282 struct lima_block_reader { 283 void *dst; 284 size_t base; 285 size_t count; 286 size_t off; 287 ssize_t read; 288 }; 289 290 static bool lima_read_block(struct lima_block_reader *reader, 291 void *src, size_t src_size) 292 { 293 size_t max_off = reader->base + src_size; 294 295 if (reader->off < max_off) { 296 size_t size = min_t(size_t, max_off - reader->off, 297 reader->count); 298 299 memcpy(reader->dst, src + (reader->off - reader->base), size); 300 301 reader->dst += size; 302 reader->off += size; 303 reader->read += size; 304 reader->count -= size; 305 } 306 307 reader->base = max_off; 308 309 return !!reader->count; 310 } 311 312 static ssize_t lima_error_state_read(struct file *filp, struct kobject *kobj, 313 struct bin_attribute *attr, char *buf, 314 loff_t off, size_t count) 315 { 316 struct device *dev = kobj_to_dev(kobj); 317 struct lima_device *ldev = dev_get_drvdata(dev); 318 struct lima_sched_error_task *et; 319 struct lima_block_reader reader = { 320 .dst = buf, 321 .count = count, 322 .off = off, 323 }; 324 325 mutex_lock(&ldev->error_task_list_lock); 326 327 if (lima_read_block(&reader, &ldev->dump, sizeof(ldev->dump))) { 328 list_for_each_entry(et, &ldev->error_task_list, list) { 329 if (!lima_read_block(&reader, et->data, et->size)) 330 break; 331 } 332 } 333 334 mutex_unlock(&ldev->error_task_list_lock); 335 return reader.read; 336 } 337 338 static ssize_t lima_error_state_write(struct file *file, struct kobject *kobj, 339 struct bin_attribute *attr, char *buf, 340 loff_t off, size_t count) 341 { 342 struct device *dev = kobj_to_dev(kobj); 343 struct lima_device *ldev = dev_get_drvdata(dev); 344 struct lima_sched_error_task *et, *tmp; 345 346 mutex_lock(&ldev->error_task_list_lock); 347 348 list_for_each_entry_safe(et, tmp, &ldev->error_task_list, list) { 349 list_del(&et->list); 350 kvfree(et); 351 } 352 353 ldev->dump.size = 0; 354 ldev->dump.num_tasks = 0; 355 356 mutex_unlock(&ldev->error_task_list_lock); 357 358 return count; 359 } 360 361 static const struct bin_attribute lima_error_state_attr = { 362 .attr.name = "error", 363 .attr.mode = 0600, 364 .size = 0, 365 .read = lima_error_state_read, 366 .write = lima_error_state_write, 367 }; 368 369 static int lima_pdev_probe(struct platform_device *pdev) 370 { 371 struct lima_device *ldev; 372 struct drm_device *ddev; 373 int err; 374 375 err = lima_sched_slab_init(); 376 if (err) 377 return err; 378 379 ldev = devm_kzalloc(&pdev->dev, sizeof(*ldev), GFP_KERNEL); 380 if (!ldev) { 381 err = -ENOMEM; 382 goto err_out0; 383 } 384 385 ldev->dev = &pdev->dev; 386 ldev->id = (enum lima_gpu_id)of_device_get_match_data(&pdev->dev); 387 388 platform_set_drvdata(pdev, ldev); 389 390 /* Allocate and initialize the DRM device. */ 391 ddev = drm_dev_alloc(&lima_drm_driver, &pdev->dev); 392 if (IS_ERR(ddev)) { 393 err = PTR_ERR(ddev); 394 goto err_out0; 395 } 396 397 ddev->dev_private = ldev; 398 ldev->ddev = ddev; 399 400 err = lima_device_init(ldev); 401 if (err) 402 goto err_out1; 403 404 err = lima_devfreq_init(ldev); 405 if (err) { 406 dev_err(&pdev->dev, "Fatal error during devfreq init\n"); 407 goto err_out2; 408 } 409 410 pm_runtime_set_active(ldev->dev); 411 pm_runtime_mark_last_busy(ldev->dev); 412 pm_runtime_set_autosuspend_delay(ldev->dev, 200); 413 pm_runtime_use_autosuspend(ldev->dev); 414 pm_runtime_enable(ldev->dev); 415 416 /* 417 * Register the DRM device with the core and the connectors with 418 * sysfs. 419 */ 420 err = drm_dev_register(ddev, 0); 421 if (err < 0) 422 goto err_out3; 423 424 if (sysfs_create_bin_file(&ldev->dev->kobj, &lima_error_state_attr)) 425 dev_warn(ldev->dev, "fail to create error state sysfs\n"); 426 427 return 0; 428 429 err_out3: 430 pm_runtime_disable(ldev->dev); 431 lima_devfreq_fini(ldev); 432 err_out2: 433 lima_device_fini(ldev); 434 err_out1: 435 drm_dev_put(ddev); 436 err_out0: 437 lima_sched_slab_fini(); 438 return err; 439 } 440 441 static void lima_pdev_remove(struct platform_device *pdev) 442 { 443 struct lima_device *ldev = platform_get_drvdata(pdev); 444 struct drm_device *ddev = ldev->ddev; 445 446 sysfs_remove_bin_file(&ldev->dev->kobj, &lima_error_state_attr); 447 448 drm_dev_unregister(ddev); 449 450 /* stop autosuspend to make sure device is in active state */ 451 pm_runtime_set_autosuspend_delay(ldev->dev, -1); 452 pm_runtime_disable(ldev->dev); 453 454 lima_devfreq_fini(ldev); 455 lima_device_fini(ldev); 456 457 drm_dev_put(ddev); 458 lima_sched_slab_fini(); 459 } 460 461 static const struct of_device_id dt_match[] = { 462 { .compatible = "arm,mali-400", .data = (void *)lima_gpu_mali400 }, 463 { .compatible = "arm,mali-450", .data = (void *)lima_gpu_mali450 }, 464 {} 465 }; 466 MODULE_DEVICE_TABLE(of, dt_match); 467 468 static const struct dev_pm_ops lima_pm_ops = { 469 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) 470 SET_RUNTIME_PM_OPS(lima_device_suspend, lima_device_resume, NULL) 471 }; 472 473 static struct platform_driver lima_platform_driver = { 474 .probe = lima_pdev_probe, 475 .remove_new = lima_pdev_remove, 476 .driver = { 477 .name = "lima", 478 .pm = &lima_pm_ops, 479 .of_match_table = dt_match, 480 }, 481 }; 482 483 module_platform_driver(lima_platform_driver); 484 485 MODULE_AUTHOR("Lima Project Developers"); 486 MODULE_DESCRIPTION("Lima DRM Driver"); 487 MODULE_LICENSE("GPL v2"); 488