drivers/gpu/drm/exynos/exynos_drm_drv.c

   1 /*
   2  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   3  * Authors:
   4  *      Inki Dae <inki.dae@samsung.com>
   5  *      Joonyoung Shim <jy0922.shim@samsung.com>
   6  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "drm_crtc_helper.h"
  31
  32 #include <drm/exynos_drm.h>
  33
  34 #include "exynos_drm_drv.h"
  35 #include "exynos_drm_crtc.h"
  36 #include "exynos_drm_encoder.h"
  37 #include "exynos_drm_fbdev.h"
  38 #include "exynos_drm_fb.h"
  39 #include "exynos_drm_gem.h"
  40 #include "exynos_drm_plane.h"
  41 #include "exynos_drm_vidi.h"
  42 #include "exynos_drm_dmabuf.h"
  43 #include "exynos_drm_display.h"
  44
  45 #define DRIVER_NAME     "exynos"
  46 #define DRIVER_DESC     "Samsung SoC DRM"
  47 #define DRIVER_DATE     "20110530"
  48 #define DRIVER_MAJOR    1
  49 #define DRIVER_MINOR    0
  50
  51 #define VBLANK_OFF_DELAY        50000
  52
  53 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
  54 {
  55         struct exynos_drm_private *private;
  56         int ret;
  57         int nr;
  58
  59         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  60
  61         private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
  62         if (!private) {
  63                 DRM_ERROR("failed to allocate private\n");
  64                 return -ENOMEM;
  65         }
  66
  67 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
  68         if (kds_callback_init(&private->kds_cb, 1,
  69                               exynos_drm_kds_callback) < 0) {
  70                 DRM_ERROR("kds alloc queue failed.\n");
  71                 ret = -ENOMEM;
  72                 goto err_kds;
  73         }
  74         if (kds_callback_init(&private->kds_cb_rm_fb, 0,
  75                               exynos_drm_kds_callback_rm_fb) < 0) {
  76                 DRM_ERROR("kds alloc queue failed.\n");
  77                 ret = -ENOMEM;
  78                 goto err_kds_rm_fb;
  79         }
  80 #endif
  81
  82         DRM_INIT_WAITQUEUE(&private->wait_vsync_queue);
  83         atomic_set(&private->wait_vsync_event, 0);
  84
  85         dev->dev_private = (void *)private;
  86
  87         drm_mode_config_init(dev);
  88
  89         /* init kms poll for handling hpd */
  90         drm_kms_helper_poll_init(dev);
  91
  92         exynos_drm_mode_config_init(dev);
  93
  94         /*
  95          * EXYNOS4 is enough to have two CRTCs and each crtc would be used
  96          * without dependency of hardware.
  97          */
  98         for (nr = 0; nr < MAX_CRTC; nr++) {
  99                 ret = exynos_drm_crtc_create(dev, nr);
 100                 if (ret)
 101                         goto err_crtc;
 102         }
 103
 104         for (nr = 0; nr < MAX_PLANE; nr++) {
 105                 ret = exynos_plane_init(dev, nr);
 106                 if (ret)
 107                         goto err_crtc;
 108         }
 109
 110         ret = drm_vblank_init(dev, MAX_CRTC);
 111         if (ret)
 112                 goto err_crtc;
 113
 114         /*
 115          * probe sub drivers such as display controller and hdmi driver,
 116          * that were registered at probe() of platform driver
 117          * to the sub driver and create encoder and connector for them.
 118          */
 119         ret = exynos_drm_device_register(dev);
 120         if (ret)
 121                 goto err_vblank;
 122
 123         /* setup possible_clones. */
 124         exynos_drm_encoder_setup(dev);
 125
 126         /*
 127          * create and configure fb helper and also exynos specific
 128          * fbdev object.
 129          */
 130         ret = exynos_drm_fbdev_init(dev);
 131         if (ret) {
 132                 DRM_ERROR("failed to initialize drm fbdev\n");
 133                 goto err_drm_device;
 134         }
 135
 136         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 137
 138         return 0;
 139
 140 err_drm_device:
 141         exynos_drm_device_unregister(dev);
 142 err_vblank:
 143         drm_vblank_cleanup(dev);
 144 err_crtc:
 145         drm_mode_config_cleanup(dev);
 146 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 147         kds_callback_term(&private->kds_cb_rm_fb);
 148 err_kds_rm_fb:
 149         kds_callback_term(&private->kds_cb);
 150 err_kds:
 151 #endif
 152         kfree(private);
 153
 154         return ret;
 155 }
 156
 157 static int exynos_drm_unload(struct drm_device *dev)
 158 {
 159         struct exynos_drm_private *private = dev->dev_private;
 160
 161         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 162
 163         exynos_drm_fbdev_fini(dev);
 164         exynos_drm_device_unregister(dev);
 165         drm_vblank_cleanup(dev);
 166         drm_kms_helper_poll_fini(dev);
 167         drm_mode_config_cleanup(dev);
 168 #ifdef CONFIG_DMA_SHARED_BUFFER_USES_KDS
 169         kds_callback_term(&private->kds_cb);
 170 #endif
 171         kfree(private);
 172
 173         dev->dev_private = NULL;
 174
 175         return 0;
 176 }
 177
 178 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 179 {
 180         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 181
 182         return exynos_drm_subdrv_open(dev, file);
 183 }
 184
 185 static void exynos_drm_preclose(struct drm_device *dev,
 186                                         struct drm_file *file)
 187 {
 188         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 189
 190         exynos_drm_subdrv_close(dev, file);
 191 }
 192
 193 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 194 {
 195         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 196
 197         if (!file->driver_priv)
 198                 return;
 199
 200         kfree(file->driver_priv);
 201         file->driver_priv = NULL;
 202 }
 203
 204 static void exynos_drm_lastclose(struct drm_device *dev)
 205 {
 206         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 207
 208         exynos_drm_fbdev_restore_mode(dev);
 209 }
 210
 211 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
 212         .fault = exynos_drm_gem_fault,
 213         .open = drm_gem_vm_open,
 214         .close = drm_gem_vm_close,
 215 };
 216
 217 static struct drm_ioctl_desc exynos_ioctls[] = {
 218         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 219                         DRM_UNLOCKED | DRM_AUTH),
 220         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 221                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 222                         DRM_AUTH),
 223         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 224                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 225         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
 226                         DRM_UNLOCKED | DRM_AUTH),
 227         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
 228                         vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
 229 };
 230
 231 static const struct file_operations exynos_drm_driver_fops = {
 232         .owner          = THIS_MODULE,
 233         .open           = drm_open,
 234         .mmap           = exynos_drm_gem_mmap,
 235         .poll           = drm_poll,
 236         .read           = drm_read,
 237         .unlocked_ioctl = drm_ioctl,
 238         .release        = drm_release,
 239 };
 240
 241 static struct drm_driver exynos_drm_driver = {
 242         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
 243                                   DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
 244         .load                   = exynos_drm_load,
 245         .unload                 = exynos_drm_unload,
 246         .open                   = exynos_drm_open,
 247         .preclose               = exynos_drm_preclose,
 248         .lastclose              = exynos_drm_lastclose,
 249         .postclose              = exynos_drm_postclose,
 250         .get_vblank_counter     = drm_vblank_count,
 251         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 252         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 253         .gem_init_object        = exynos_drm_gem_init_object,
 254         .gem_free_object        = exynos_drm_gem_free_object,
 255         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 256         .dumb_create            = exynos_drm_gem_dumb_create,
 257         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 258         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 259         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 260         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 261         .gem_prime_export       = exynos_dmabuf_prime_export,
 262         .gem_prime_import       = exynos_dmabuf_prime_import,
 263         .ioctls                 = exynos_ioctls,
 264         .fops                   = &exynos_drm_driver_fops,
 265         .name   = DRIVER_NAME,
 266         .desc   = DRIVER_DESC,
 267         .date   = DRIVER_DATE,
 268         .major  = DRIVER_MAJOR,
 269         .minor  = DRIVER_MINOR,
 270 };
 271
 272 #ifdef CONFIG_EXYNOS_IOMMU
 273 static int iommu_init(struct platform_device *pdev)
 274 {
 275         /* DRM device expects a IOMMU mapping to be already
 276          * created in FIMD. Else this function should
 277          * throw an error.
 278          */
 279         if (exynos_drm_common_mapping==NULL) {
 280                 printk(KERN_ERR "exynos drm common mapping is invalid\n");
 281                 return -1;
 282         }
 283
 284         /*
 285          * The ordering in Makefile warrants that this is initialized after
 286          * FIMD, so only just ensure that it works as expected and we are
 287          * reusing the mapping originally created in exynos_drm_fimd.c.
 288          */
 289         WARN_ON(!exynos_drm_common_mapping);
 290         if (!s5p_create_iommu_mapping(&pdev->dev, 0,
 291                                 0, 0, exynos_drm_common_mapping)) {
 292                 printk(KERN_ERR "failed to create IOMMU mapping\n");
 293                 return -1;
 294         }
 295
 296         return 0;
 297 }
 298
 299 static void iommu_deinit(struct platform_device *pdev)
 300 {
 301         /* detach the device and mapping */
 302         s5p_destroy_iommu_mapping(&pdev->dev);
 303         DRM_DEBUG("released the IOMMU mapping\n");
 304
 305         return;
 306 }
 307 #endif
 308
 309 static int exynos_drm_platform_probe(struct platform_device *pdev)
 310 {
 311         struct device *dev = &pdev->dev;
 312
 313         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 314
 315 #ifdef CONFIG_EXYNOS_IOMMU
 316         if (iommu_init(pdev)) {
 317                 DRM_ERROR("failed to initialize IOMMU\n");
 318                 return -ENODEV;
 319         }
 320 #endif
 321
 322         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 323
 324         pm_runtime_enable(dev);
 325         pm_runtime_get_sync(dev);
 326
 327         return drm_platform_init(&exynos_drm_driver, pdev);
 328 }
 329
 330 static int __devexit exynos_drm_platform_remove(struct platform_device *pdev)
 331 {
 332         struct device *dev = &pdev->dev;
 333
 334         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 335
 336         pm_runtime_disable(dev);
 337
 338         drm_platform_exit(&exynos_drm_driver, pdev);
 339
 340 #ifdef CONFIG_EXYNOS_IOMMU
 341         iommu_deinit(pdev);
 342 #endif
 343         return 0;
 344 }
 345
 346 /* TODO (seanpaul): Once we remove platform drivers, we'll be calling the
 347  * various panel/controller init functions directly. These init functions will
 348  * return to us the ops and context, so we can get rid of these attach
 349  * functions. Once the attach functions are gone, we can move this array of
 350  * display pointers into the drm device's platform data.
 351  *
 352  * For now, we'll use a global to keep track of things.
 353  */
 354 static struct exynos_drm_display *displays[EXYNOS_DRM_DISPLAY_NUM_DISPLAYS];
 355
 356 void exynos_display_attach_panel(enum exynos_drm_display_type type,
 357                 struct exynos_panel_ops *ops, void *ctx)
 358 {
 359         int i;
 360         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 361                 if (displays[i]->display_type == type) {
 362                         displays[i]->panel_ctx = ctx;
 363                         displays[i]->panel_ops = ops;
 364                         return;
 365                 }
 366         }
 367 }
 368
 369 void exynos_display_attach_controller(enum exynos_drm_display_type type,
 370                 struct exynos_controller_ops *ops, void *ctx)
 371 {
 372         int i;
 373         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 374                 if (displays[i]->display_type == type) {
 375                         displays[i]->controller_ctx = ctx;
 376                         displays[i]->controller_ops = ops;
 377                         return;
 378                 }
 379         }
 380 }
 381
 382 static int display_subdrv_probe(struct drm_device *drm_dev,
 383                 struct exynos_drm_subdrv *subdrv)
 384 {
 385         struct exynos_drm_display *display = subdrv->display;
 386         int ret;
 387
 388         if (!display->controller_ops || !display->panel_ops)
 389                 return -EINVAL;
 390
 391         if (display->controller_ops->subdrv_probe) {
 392                 ret = display->controller_ops->subdrv_probe(
 393                                 display->controller_ctx, drm_dev);
 394                 if (ret)
 395                         return ret;
 396         }
 397
 398         if (display->panel_ops->subdrv_probe) {
 399                 ret = display->panel_ops->subdrv_probe(display->panel_ctx,
 400                                 drm_dev);
 401                 if (ret)
 402                         return ret;
 403         }
 404
 405         return 0;
 406 }
 407
 408 int exynos_display_init(struct exynos_drm_display *display,
 409                 enum exynos_drm_display_type type)
 410 {
 411         struct exynos_drm_subdrv *subdrv;
 412
 413         subdrv = kzalloc(sizeof(*subdrv), GFP_KERNEL);
 414         if (!subdrv) {
 415                 DRM_ERROR("Failed to allocate display subdrv\n");
 416                 return -ENOMEM;
 417         }
 418
 419         display->display_type = type;
 420         display->pipe = -1;
 421         display->subdrv = subdrv;
 422
 423         subdrv->probe = display_subdrv_probe;
 424         subdrv->display = display;
 425         exynos_drm_subdrv_register(subdrv);
 426
 427         return 0;
 428 }
 429
 430 void exynos_display_remove(struct exynos_drm_display *display)
 431 {
 432         if (display->subdrv) {
 433                 exynos_drm_subdrv_unregister(display->subdrv);
 434                 kfree(display->subdrv);
 435         }
 436 }
 437
 438 static int exynos_drm_resume_displays(void)
 439 {
 440         int i;
 441
 442         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 443                 struct exynos_drm_display *display = displays[i];
 444                 struct drm_encoder *encoder = display->subdrv->encoder;
 445
 446                 if (!encoder)
 447                         continue;
 448
 449                 exynos_drm_encoder_dpms(encoder, display->suspend_dpms);
 450         }
 451         return 0;
 452 }
 453
 454 static int exynos_drm_suspend_displays(void)
 455 {
 456         int i;
 457
 458         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 459                 struct exynos_drm_display *display = displays[i];
 460                 struct drm_encoder *encoder = display->subdrv->encoder;
 461
 462                 if (!encoder)
 463                         continue;
 464
 465                 display->suspend_dpms = exynos_drm_encoder_get_dpms(encoder);
 466                 exynos_drm_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
 467         }
 468         return 0;
 469 }
 470
 471 #ifdef CONFIG_PM_SLEEP
 472 static int exynos_drm_suspend(struct device *dev)
 473 {
 474         if (pm_runtime_suspended(dev))
 475                 return 0;
 476
 477         return exynos_drm_suspend_displays();
 478 }
 479
 480 static int exynos_drm_resume(struct device *dev)
 481 {
 482         if (pm_runtime_suspended(dev))
 483                 return 0;
 484
 485         return exynos_drm_resume_displays();
 486 }
 487 #endif
 488
 489 #ifdef CONFIG_PM_RUNTIME
 490 static int exynos_drm_runtime_resume(struct device *dev)
 491 {
 492         return exynos_drm_resume_displays();
 493 }
 494
 495 static int exynos_drm_runtime_suspend(struct device *dev)
 496 {
 497         return exynos_drm_suspend_displays();
 498 }
 499 #endif
 500
 501 static const struct dev_pm_ops drm_pm_ops = {
 502         SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
 503         SET_RUNTIME_PM_OPS(exynos_drm_runtime_suspend,
 504                         exynos_drm_runtime_resume, NULL)
 505 };
 506
 507 static struct platform_driver exynos_drm_platform_driver = {
 508         .probe          = exynos_drm_platform_probe,
 509         .remove         = __devexit_p(exynos_drm_platform_remove),
 510         .driver         = {
 511                 .owner  = THIS_MODULE,
 512                 .name   = "exynos-drm",
 513                 .pm     = &drm_pm_ops,
 514         },
 515 };
 516
 517 static int __init exynos_drm_init(void)
 518 {
 519         int ret, i;
 520
 521         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 522
 523         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 524                 displays[i] = kzalloc(sizeof(*displays[i]), GFP_KERNEL);
 525                 if (!displays[i]) {
 526                         ret = -ENOMEM;
 527                         goto out_display;
 528                 }
 529
 530                 ret = exynos_display_init(displays[i], i);
 531                 if (ret)
 532                         goto out_display;
 533         }
 534
 535 #ifdef CONFIG_DRM_EXYNOS_FIMD
 536         ret = platform_driver_register(&fimd_driver);
 537         if (ret < 0)
 538                 goto out_fimd;
 539 #endif
 540
 541 #ifdef CONFIG_DRM_EXYNOS_DP
 542         ret = platform_driver_register(&dp_driver);
 543         if (ret < 0)
 544                 goto out_dp_driver;
 545 #endif
 546
 547 #ifdef CONFIG_DRM_EXYNOS_HDMI
 548         ret = platform_driver_register(&hdmi_driver);
 549         if (ret < 0)
 550                 goto out_hdmi;
 551         ret = platform_driver_register(&mixer_driver);
 552         if (ret < 0)
 553                 goto out_mixer;
 554 #endif
 555
 556 #ifdef CONFIG_DRM_EXYNOS_VIDI
 557         ret = platform_driver_register(&vidi_driver);
 558         if (ret < 0)
 559                 goto out_vidi;
 560 #endif
 561
 562         ret = platform_driver_register(&exynos_drm_platform_driver);
 563         if (ret < 0)
 564                 goto out;
 565
 566         return 0;
 567
 568 out:
 569 #ifdef CONFIG_DRM_EXYNOS_VIDI
 570 out_vidi:
 571         platform_driver_unregister(&vidi_driver);
 572 #endif
 573
 574 #ifdef CONFIG_DRM_EXYNOS_HDMI
 575         platform_driver_unregister(&mixer_driver);
 576 out_mixer:
 577         platform_driver_unregister(&hdmi_driver);
 578 out_hdmi:
 579 #endif
 580
 581         platform_driver_unregister(&dp_driver);
 582 out_dp_driver:
 583 #ifdef CONFIG_DRM_EXYNOS_FIMD
 584         platform_driver_unregister(&fimd_driver);
 585 out_fimd:
 586 #endif
 587 out_display:
 588         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 589                 if (!displays[i])
 590                         continue;
 591
 592                 exynos_display_remove(displays[i]);
 593                 kfree(displays[i]);
 594         }
 595         return ret;
 596 }
 597
 598 static void __exit exynos_drm_exit(void)
 599 {
 600         int i;
 601
 602         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 603
 604         platform_driver_unregister(&exynos_drm_platform_driver);
 605
 606 #ifdef CONFIG_DRM_EXYNOS_HDMI
 607         platform_driver_unregister(&mixer_driver);
 608         platform_driver_unregister(&hdmi_driver);
 609 #endif
 610
 611 #ifdef CONFIG_DRM_EXYNOS_VIDI
 612         platform_driver_unregister(&vidi_driver);
 613 #endif
 614
 615         platform_driver_unregister(&dp_driver);
 616 #ifdef CONFIG_DRM_EXYNOS_FIMD
 617         platform_driver_unregister(&fimd_driver);
 618 #endif
 619
 620         for (i = 0; i < EXYNOS_DRM_DISPLAY_NUM_DISPLAYS; i++) {
 621                 if (!displays[i])
 622                         continue;
 623
 624                 exynos_display_remove(displays[i]);
 625                 kfree(displays[i]);
 626         }
 627 }
 628
 629 module_init(exynos_drm_init);
 630 module_exit(exynos_drm_exit);
 631
 632 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 633 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 634 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 635 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 636 MODULE_LICENSE("GPL");