sys/dev/drm/radeon/radeon_drv.c

   1 /**
   2  * \file radeon_drv.c
   3  * ATI Radeon driver
   4  *
   5  * \author Gareth Hughes <gareth@valinux.com>
   6  */
   7
   8 /*
   9  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  10  * All Rights Reserved.
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice (including the next
  20  * paragraph) shall be included in all copies or substantial portions of the
  21  * Software.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  26  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  27  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  28  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  29  * OTHER DEALINGS IN THE SOFTWARE.
  30  *
  31  * $FreeBSD: head/sys/dev/drm2/radeon/radeon_drv.c 254885 2013-08-25 19:37:15Z dumbbell $
  32  */
  33
  34 #include <drm/drmP.h>
  35 #include <uapi_drm/radeon_drm.h>
  36 #include "radeon_drv.h"
  37 #include "radeon_gem.h"
  38 #include "radeon_kms.h"
  39 #include "radeon_irq_kms.h"
  40
  41 #include <drm/drm_pciids.h>
  42
  43 /*
  44  * KMS wrapper.
  45  * - 2.0.0 - initial interface
  46  * - 2.1.0 - add square tiling interface
  47  * - 2.2.0 - add r6xx/r7xx const buffer support
  48  * - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
  49  * - 2.4.0 - add crtc id query
  50  * - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
  51  * - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
  52  *   2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
  53  *   2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
  54  *   2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
  55  *   2.10.0 - fusion 2D tiling
  56  *   2.11.0 - backend map, initial compute support for the CS checker
  57  *   2.12.0 - RADEON_CS_KEEP_TILING_FLAGS
  58  *   2.13.0 - virtual memory support, streamout
  59  *   2.14.0 - add evergreen tiling informations
  60  *   2.15.0 - add max_pipes query
  61  *   2.16.0 - fix evergreen 2D tiled surface calculation
  62  *   2.17.0 - add STRMOUT_BASE_UPDATE for r7xx
  63  *   2.18.0 - r600-eg: allow "invalid" DB formats
  64  *   2.19.0 - r600-eg: MSAA textures
  65  *   2.20.0 - r600-si: RADEON_INFO_TIMESTAMP query
  66  *   2.21.0 - r600-r700: FMASK and CMASK
  67  *   2.22.0 - r600 only: RESOLVE_BOX allowed
  68  *   2.23.0 - allow STRMOUT_BASE_UPDATE on RS780 and RS880
  69  *   2.24.0 - eg only: allow MIP_ADDRESS=0 for MSAA textures
  70  *   2.25.0 - eg+: new info request for num SE and num SH
  71  *   2.26.0 - r600-eg: fix htile size computation
  72  *   2.27.0 - r600-SI: Add CS ioctl support for async DMA
  73  *   2.28.0 - r600-eg: Add MEM_WRITE packet support
  74  *   2.29.0 - R500 FP16 color clear registers
  75  *   2.30.0 - fix for FMASK texturing
  76  *   2.31.0 - Add fastfb support for rs690
  77  *   2.32.0 - new info request for rings working
  78  *   2.33.0 - Add SI tiling mode array query
  79  */
  80 #define KMS_DRIVER_MAJOR        2
  81 #define KMS_DRIVER_MINOR        33
  82 #define KMS_DRIVER_PATCHLEVEL   0
  83 int radeon_suspend_kms(struct drm_device *dev);
  84 int radeon_resume_kms(struct drm_device *dev);
  85 extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
  86                                       int *vpos, int *hpos);
  87 extern struct drm_ioctl_desc radeon_ioctls_kms[];
  88 extern int radeon_max_kms_ioctl;
  89 #ifdef DUMBBELL_WIP
  90 int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
  91 #endif /* DUMBBELL_WIP */
  92 int radeon_mode_dumb_mmap(struct drm_file *filp,
  93                           struct drm_device *dev,
  94                           uint32_t handle, uint64_t *offset_p);
  95 int radeon_mode_dumb_create(struct drm_file *file_priv,
  96                             struct drm_device *dev,
  97                             struct drm_mode_create_dumb *args);
  98 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
  99                              struct drm_device *dev,
 100                              uint32_t handle);
 101 struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
 102 struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
 103                                                         size_t size,
 104                                                         struct sg_table *sg);
 105 int radeon_gem_prime_pin(struct drm_gem_object *obj);
 106 void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
 107 void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 108
 109 #if defined(CONFIG_DEBUG_FS)
 110 int radeon_debugfs_init(struct drm_minor *minor);
 111 void radeon_debugfs_cleanup(struct drm_minor *minor);
 112 #endif
 113
 114 /* atpx handler */
 115 #if defined(CONFIG_VGA_SWITCHEROO)
 116 void radeon_register_atpx_handler(void);
 117 void radeon_unregister_atpx_handler(void);
 118 #else
 119 static inline void radeon_register_atpx_handler(void) {}
 120 static inline void radeon_unregister_atpx_handler(void) {}
 121 #endif
 122
 123 int radeon_no_wb;
 124 int radeon_modeset = 1;
 125 int radeon_dynclks = -1;
 126 int radeon_r4xx_atom = 0;
 127 int radeon_agpmode = 0;
 128 int radeon_vram_limit = 0;
 129 int radeon_gart_size = 512; /* default gart size */
 130 int radeon_benchmarking = 0;
 131 int radeon_testing = 0;
 132 int radeon_connector_table = 0;
 133 int radeon_tv = 1;
 134 int radeon_audio = 0;
 135 int radeon_disp_priority = 0;
 136 int radeon_hw_i2c = 0;
 137 int radeon_pcie_gen2 = -1;
 138 int radeon_msi = -1;
 139 int radeon_lockup_timeout = 10000;
 140 int radeon_fastfb = 0;
 141
 142 static drm_pci_id_list_t pciidlist[] = {
 143         radeon_PCI_IDS
 144 };
 145
 146 #ifdef CONFIG_DRM_RADEON_UMS
 147
 148 #ifdef DUMBBELL_WIP
 149 MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
 150 module_param_named(no_wb, radeon_no_wb, int, 0444);
 151
 152 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 153 module_param_named(modeset, radeon_modeset, int, 0400);
 154
 155 MODULE_PARM_DESC(dynclks, "Disable/Enable dynamic clocks");
 156 module_param_named(dynclks, radeon_dynclks, int, 0444);
 157
 158 MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
 159 module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
 160
 161 MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing");
 162 module_param_named(vramlimit, radeon_vram_limit, int, 0600);
 163
 164 MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
 165 module_param_named(agpmode, radeon_agpmode, int, 0444);
 166
 167 MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc)");
 168 module_param_named(gartsize, radeon_gart_size, int, 0600);
 169
 170 MODULE_PARM_DESC(benchmark, "Run benchmark");
 171 module_param_named(benchmark, radeon_benchmarking, int, 0444);
 172
 173 MODULE_PARM_DESC(test, "Run tests");
 174 module_param_named(test, radeon_testing, int, 0444);
 175
 176 MODULE_PARM_DESC(connector_table, "Force connector table");
 177 module_param_named(connector_table, radeon_connector_table, int, 0444);
 178
 179 MODULE_PARM_DESC(tv, "TV enable (0 = disable)");
 180 module_param_named(tv, radeon_tv, int, 0444);
 181
 182 MODULE_PARM_DESC(audio, "Audio enable (1 = enable)");
 183 module_param_named(audio, radeon_audio, int, 0444);
 184
 185 MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
 186 module_param_named(disp_priority, radeon_disp_priority, int, 0444);
 187
 188 MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
 189 module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
 190
 191 MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
 192 module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
 193
 194 MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
 195 module_param_named(msi, radeon_msi, int, 0444);
 196
 197 MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable)");
 198 module_param_named(lockup_timeout, radeon_lockup_timeout, int, 0444);
 199
 200 MODULE_PARM_DESC(fastfb, "Direct FB access for IGP chips (0 = disable, 1 = enable)");
 201 module_param_named(fastfb, radeon_fastfb, int, 0444);
 202
 203 static int radeon_suspend(struct drm_device *dev, pm_message_t state)
 204 {
 205         drm_radeon_private_t *dev_priv = dev->dev_private;
 206
 207         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 208                 return 0;
 209
 210         /* Disable *all* interrupts */
 211         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 212                 RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 213         RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 214         return 0;
 215 }
 216
 217 static int radeon_resume(struct drm_device *dev)
 218 {
 219         drm_radeon_private_t *dev_priv = dev->dev_private;
 220
 221         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 222                 return 0;
 223
 224         /* Restore interrupt registers */
 225         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 226                 RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 227         RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 228         return 0;
 229 }
 230 #endif /* DUMBBELL_WIP */
 231
 232 #ifdef DUMBBELL_WIP
 233 static const struct file_operations radeon_driver_old_fops = {
 234         .owner = THIS_MODULE,
 235         .open = drm_open,
 236         .release = drm_release,
 237         .unlocked_ioctl = drm_ioctl,
 238         .mmap = drm_mmap,
 239         .poll = drm_poll,
 240         .fasync = drm_fasync,
 241         .read = drm_read,
 242 #ifdef CONFIG_COMPAT
 243         .compat_ioctl = radeon_compat_ioctl,
 244 #endif
 245         .llseek = noop_llseek,
 246 };
 247
 248 static struct drm_driver driver_old = {
 249         .driver_features =
 250             DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
 251             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
 252         .dev_priv_size = sizeof(drm_radeon_buf_priv_t),
 253         .load = radeon_driver_load,
 254         .firstopen = radeon_driver_firstopen,
 255         .open = radeon_driver_open,
 256         .preclose = radeon_driver_preclose,
 257         .postclose = radeon_driver_postclose,
 258         .lastclose = radeon_driver_lastclose,
 259         .unload = radeon_driver_unload,
 260 #ifdef DUMBBELL_WIP
 261         .suspend = radeon_suspend,
 262         .resume = radeon_resume,
 263 #endif /* DUMBBELL_WIP */
 264         .get_vblank_counter = radeon_get_vblank_counter,
 265         .enable_vblank = radeon_enable_vblank,
 266         .disable_vblank = radeon_disable_vblank,
 267         .master_create = radeon_master_create,
 268         .master_destroy = radeon_master_destroy,
 269         .irq_preinstall = radeon_driver_irq_preinstall,
 270         .irq_postinstall = radeon_driver_irq_postinstall,
 271         .irq_uninstall = radeon_driver_irq_uninstall,
 272         .irq_handler = radeon_driver_irq_handler,
 273         .ioctls = radeon_ioctls,
 274         .dma_ioctl = radeon_cp_buffers,
 275         .fops = &radeon_driver_old_fops,
 276         .name = DRIVER_NAME,
 277         .desc = DRIVER_DESC,
 278         .date = DRIVER_DATE,
 279         .major = DRIVER_MAJOR,
 280         .minor = DRIVER_MINOR,
 281         .patchlevel = DRIVER_PATCHLEVEL,
 282 };
 283 #endif /* DUMBBELL_WIP */
 284
 285 #endif
 286
 287 static struct drm_driver kms_driver;
 288
 289 #ifdef DUMBBELL_WIP
 290 static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
 291 {
 292         struct apertures_struct *ap;
 293         bool primary = false;
 294
 295         ap = alloc_apertures(1);
 296         if (!ap)
 297                 return -ENOMEM;
 298
 299         ap->ranges[0].base = pci_resource_start(pdev, 0);
 300         ap->ranges[0].size = pci_resource_len(pdev, 0);
 301
 302 #ifdef CONFIG_X86
 303         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 304 #endif
 305         remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
 306         kfree(ap);
 307
 308         return 0;
 309 }
 310
 311 static int radeon_pci_probe(struct pci_dev *pdev,
 312                             const struct pci_device_id *ent)
 313 {
 314         int ret;
 315
 316         /* Get rid of things like offb */
 317         ret = radeon_kick_out_firmware_fb(pdev);
 318         if (ret)
 319                 return ret;
 320
 321         return drm_get_pci_dev(pdev, ent, &kms_driver);
 322 }
 323
 324 static void
 325 radeon_pci_remove(struct pci_dev *pdev)
 326 {
 327         struct drm_device *dev = pci_get_drvdata(pdev);
 328
 329         drm_put_dev(dev);
 330 }
 331
 332 static int
 333 radeon_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 334 {
 335         struct drm_device *dev = pci_get_drvdata(pdev);
 336         return radeon_suspend_kms(dev, state);
 337 }
 338
 339 static int
 340 radeon_pci_resume(struct pci_dev *pdev)
 341 {
 342         struct drm_device *dev = pci_get_drvdata(pdev);
 343         return radeon_resume_kms(dev);
 344 }
 345
 346 static const struct file_operations radeon_driver_kms_fops = {
 347         .owner = THIS_MODULE,
 348         .open = drm_open,
 349         .release = drm_release,
 350         .unlocked_ioctl = drm_ioctl,
 351         .mmap = radeon_mmap,
 352         .poll = drm_poll,
 353         .fasync = drm_fasync,
 354         .read = drm_read,
 355 #ifdef CONFIG_COMPAT
 356         .compat_ioctl = radeon_kms_compat_ioctl,
 357 #endif
 358 };
 359 #endif /* DUMBBELL_WIP */
 360
 361 static struct drm_driver kms_driver = {
 362         .driver_features =
 363             DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
 364             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
 365             DRIVER_PRIME /* | DRIVE_MODESET */,
 366 #ifdef DUMBBELL_WIP
 367         .dev_priv_size = 0,
 368 #endif /* DUMBBELL_WIP */
 369         .load = radeon_driver_load_kms,
 370         .use_msi = radeon_msi_ok,
 371         .firstopen = radeon_driver_firstopen_kms,
 372         .open = radeon_driver_open_kms,
 373         .preclose = radeon_driver_preclose_kms,
 374         .postclose = radeon_driver_postclose_kms,
 375         .lastclose = radeon_driver_lastclose_kms,
 376         .unload = radeon_driver_unload_kms,
 377 #ifdef DUMBBELL_WIP
 378         .suspend = radeon_suspend_kms,
 379         .resume = radeon_resume_kms,
 380 #endif /* DUMBBELL_WIP */
 381         .get_vblank_counter = radeon_get_vblank_counter_kms,
 382         .enable_vblank = radeon_enable_vblank_kms,
 383         .disable_vblank = radeon_disable_vblank_kms,
 384         .get_vblank_timestamp = radeon_get_vblank_timestamp_kms,
 385         .get_scanout_position = radeon_get_crtc_scanoutpos,
 386         .irq_preinstall = radeon_driver_irq_preinstall_kms,
 387         .irq_postinstall = radeon_driver_irq_postinstall_kms,
 388         .irq_uninstall = radeon_driver_irq_uninstall_kms,
 389         .irq_handler = radeon_driver_irq_handler_kms,
 390         .ioctls = radeon_ioctls_kms,
 391         .gem_free_object = radeon_gem_object_free,
 392         .gem_open_object = radeon_gem_object_open,
 393         .gem_close_object = radeon_gem_object_close,
 394         .dma_ioctl = radeon_dma_ioctl_kms,
 395         .dumb_create = radeon_mode_dumb_create,
 396         .dumb_map_offset = radeon_mode_dumb_mmap,
 397         .dumb_destroy = radeon_mode_dumb_destroy,
 398 #ifdef DUMBBELL_WIP
 399         .fops = &radeon_driver_kms_fops,
 400 #endif /* DUMBBELL_WIP */
 401
 402 #ifdef DUMBBELL_WIP
 403         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 404         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 405         .gem_prime_export = drm_gem_prime_export,
 406         .gem_prime_import = drm_gem_prime_import,
 407         .gem_prime_pin = radeon_gem_prime_pin,
 408         .gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
 409         .gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
 410         .gem_prime_vmap = radeon_gem_prime_vmap,
 411         .gem_prime_vunmap = radeon_gem_prime_vunmap,
 412 #endif /* DUMBBELL_WIP */
 413
 414         .name = DRIVER_NAME,
 415         .desc = DRIVER_DESC,
 416         .date = DRIVER_DATE,
 417         .major = KMS_DRIVER_MAJOR,
 418         .minor = KMS_DRIVER_MINOR,
 419         .patchlevel = KMS_DRIVER_PATCHLEVEL,
 420 };
 421
 422 #ifdef DUMBBELL_WIP
 423 static int __init radeon_init(void)
 424 {
 425         if (radeon_modeset == 1) {
 426                 DRM_INFO("radeon kernel modesetting enabled.\n");
 427                 driver = &kms_driver;
 428                 pdriver = &radeon_kms_pci_driver;
 429                 driver->driver_features |= DRIVER_MODESET;
 430                 driver->num_ioctls = radeon_max_kms_ioctl;
 431                 radeon_register_atpx_handler();
 432
 433         } else {
 434 #ifdef CONFIG_DRM_RADEON_UMS
 435                 DRM_INFO("radeon userspace modesetting enabled.\n");
 436                 driver = &driver_old;
 437                 pdriver = &radeon_pci_driver;
 438                 driver->driver_features &= ~DRIVER_MODESET;
 439                 driver->num_ioctls = radeon_max_ioctl;
 440 #else
 441                 DRM_ERROR("No UMS support in radeon module!\n");
 442                 return -EINVAL;
 443 #endif
 444         }
 445
 446         /* let modprobe override vga console setting */
 447         return drm_pci_init(driver, pdriver);
 448 }
 449
 450 static void __exit radeon_exit(void)
 451 {
 452         drm_pci_exit(driver, pdriver);
 453         radeon_unregister_atpx_handler();
 454 }
 455 #endif /* DUMBBELL_WIP */
 456
 457 /* =================================================================== */
 458
 459 static int
 460 radeon_probe(device_t kdev)
 461 {
 462
 463         return drm_probe(kdev, pciidlist);
 464 }
 465
 466 static int
 467 radeon_attach(device_t kdev)
 468 {
 469         struct drm_device *dev;
 470
 471         dev = device_get_softc(kdev);
 472         if (radeon_modeset == 1) {
 473                 kms_driver.driver_features |= DRIVER_MODESET;
 474                 kms_driver.num_ioctls = radeon_max_kms_ioctl;
 475                 radeon_register_atpx_handler();
 476         }
 477         dev->driver = &kms_driver;
 478         return (drm_attach(kdev, pciidlist));
 479 }
 480
 481 static int
 482 radeon_suspend(device_t kdev)
 483 {
 484         struct drm_device *dev;
 485         int ret;
 486
 487         dev = device_get_softc(kdev);
 488         ret = radeon_suspend_kms(dev);
 489
 490         return (-ret);
 491 }
 492
 493 static int
 494 radeon_resume(device_t kdev)
 495 {
 496         struct drm_device *dev;
 497         int ret;
 498
 499         dev = device_get_softc(kdev);
 500         ret = radeon_resume_kms(dev);
 501
 502         return (-ret);
 503 }
 504
 505 static device_method_t radeon_methods[] = {
 506         /* Device interface */
 507         DEVMETHOD(device_probe,         radeon_probe),
 508         DEVMETHOD(device_attach,        radeon_attach),
 509         DEVMETHOD(device_suspend,       radeon_suspend),
 510         DEVMETHOD(device_resume,        radeon_resume),
 511         DEVMETHOD(device_detach,        drm_release),
 512         DEVMETHOD_END
 513 };
 514
 515 static driver_t radeon_driver = {
 516         "drm",
 517         radeon_methods,
 518         sizeof(struct drm_device)
 519 };
 520
 521 extern devclass_t drm_devclass;
 522 DRIVER_MODULE_ORDERED(radeonkms, vgapci, radeon_driver, drm_devclass,
 523     NULL, NULL, SI_ORDER_ANY);
 524 MODULE_DEPEND(radeonkms, drm, 1, 1, 1);
 525 MODULE_DEPEND(radeonkms, agp, 1, 1, 1);
 526 MODULE_DEPEND(radeonkms, iicbus, 1, 1, 1);
 527 MODULE_DEPEND(radeonkms, iic, 1, 1, 1);
 528 MODULE_DEPEND(radeonkms, iicbb, 1, 1, 1);