sys/dev/drm2/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
  32 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include <dev/drm2/drmP.h>
  36 #include <dev/drm2/radeon/radeon_drm.h>
  37 #include "radeon_drv.h"
  38 #include "radeon_gem.h"
  39 #include "radeon_kms.h"
  40 #include "radeon_irq_kms.h"
  41
  42 #include <dev/drm2/drm_pciids.h>
  43
  44 #include "fb_if.h"
  45
  46 /*
  47  * KMS wrapper.
  48  * - 2.0.0 - initial interface
  49  * - 2.1.0 - add square tiling interface
  50  * - 2.2.0 - add r6xx/r7xx const buffer support
  51  * - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
  52  * - 2.4.0 - add crtc id query
  53  * - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
  54  * - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
  55  *   2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
  56  *   2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
  57  *   2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
  58  *   2.10.0 - fusion 2D tiling
  59  *   2.11.0 - backend map, initial compute support for the CS checker
  60  *   2.12.0 - RADEON_CS_KEEP_TILING_FLAGS
  61  *   2.13.0 - virtual memory support, streamout
  62  *   2.14.0 - add evergreen tiling informations
  63  *   2.15.0 - add max_pipes query
  64  *   2.16.0 - fix evergreen 2D tiled surface calculation
  65  *   2.17.0 - add STRMOUT_BASE_UPDATE for r7xx
  66  *   2.18.0 - r600-eg: allow "invalid" DB formats
  67  *   2.19.0 - r600-eg: MSAA textures
  68  *   2.20.0 - r600-si: RADEON_INFO_TIMESTAMP query
  69  *   2.21.0 - r600-r700: FMASK and CMASK
  70  *   2.22.0 - r600 only: RESOLVE_BOX allowed
  71  *   2.23.0 - allow STRMOUT_BASE_UPDATE on RS780 and RS880
  72  *   2.24.0 - eg only: allow MIP_ADDRESS=0 for MSAA textures
  73  *   2.25.0 - eg+: new info request for num SE and num SH
  74  *   2.26.0 - r600-eg: fix htile size computation
  75  *   2.27.0 - r600-SI: Add CS ioctl support for async DMA
  76  *   2.28.0 - r600-eg: Add MEM_WRITE packet support
  77  *   2.29.0 - R500 FP16 color clear registers
  78  */
  79 #define KMS_DRIVER_MAJOR        2
  80 #define KMS_DRIVER_MINOR        29
  81 #define KMS_DRIVER_PATCHLEVEL   0
  82 int radeon_suspend_kms(struct drm_device *dev);
  83 int radeon_resume_kms(struct drm_device *dev);
  84 extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
  85                                       int *vpos, int *hpos);
  86 extern struct drm_ioctl_desc radeon_ioctls_kms[];
  87 extern int radeon_max_kms_ioctl;
  88 #ifdef COMPAT_FREEBSD32
  89 extern struct drm_ioctl_desc radeon_compat_ioctls[];
  90 extern int radeon_num_compat_ioctls;
  91 #endif
  92 #ifdef DUMBBELL_WIP
  93 int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
  94 #endif /* DUMBBELL_WIP */
  95 int radeon_mode_dumb_mmap(struct drm_file *filp,
  96                           struct drm_device *dev,
  97                           uint32_t handle, uint64_t *offset_p);
  98 int radeon_mode_dumb_create(struct drm_file *file_priv,
  99                             struct drm_device *dev,
 100                             struct drm_mode_create_dumb *args);
 101 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 102                              struct drm_device *dev,
 103                              uint32_t handle);
 104 struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
 105                                         struct drm_gem_object *obj,
 106                                         int flags);
 107 struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
 108                                                struct dma_buf *dma_buf);
 109
 110 #if defined(CONFIG_DEBUG_FS)
 111 int radeon_debugfs_init(struct drm_minor *minor);
 112 void radeon_debugfs_cleanup(struct drm_minor *minor);
 113 #endif
 114
 115
 116 int radeon_no_wb;
 117 int radeon_modeset = 1;
 118 int radeon_dynclks = -1;
 119 int radeon_r4xx_atom = 0;
 120 int radeon_agpmode = 0;
 121 int radeon_vram_limit = 0;
 122 int radeon_gart_size = 512; /* default gart size */
 123 int radeon_benchmarking = 0;
 124 int radeon_testing = 0;
 125 int radeon_connector_table = 0;
 126 int radeon_tv = 1;
 127 int radeon_audio = 0;
 128 int radeon_disp_priority = 0;
 129 int radeon_hw_i2c = 0;
 130 int radeon_pcie_gen2 = -1;
 131 int radeon_msi = -1;
 132 int radeon_lockup_timeout = 10000;
 133
 134 #ifdef DUMBBELL_WIP
 135 MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
 136 module_param_named(no_wb, radeon_no_wb, int, 0444);
 137
 138 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 139 module_param_named(modeset, radeon_modeset, int, 0400);
 140
 141 MODULE_PARM_DESC(dynclks, "Disable/Enable dynamic clocks");
 142 module_param_named(dynclks, radeon_dynclks, int, 0444);
 143
 144 MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
 145 module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
 146
 147 MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing");
 148 module_param_named(vramlimit, radeon_vram_limit, int, 0600);
 149
 150 MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
 151 module_param_named(agpmode, radeon_agpmode, int, 0444);
 152
 153 MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc)");
 154 module_param_named(gartsize, radeon_gart_size, int, 0600);
 155
 156 MODULE_PARM_DESC(benchmark, "Run benchmark");
 157 module_param_named(benchmark, radeon_benchmarking, int, 0444);
 158
 159 MODULE_PARM_DESC(test, "Run tests");
 160 module_param_named(test, radeon_testing, int, 0444);
 161
 162 MODULE_PARM_DESC(connector_table, "Force connector table");
 163 module_param_named(connector_table, radeon_connector_table, int, 0444);
 164
 165 MODULE_PARM_DESC(tv, "TV enable (0 = disable)");
 166 module_param_named(tv, radeon_tv, int, 0444);
 167
 168 MODULE_PARM_DESC(audio, "Audio enable (1 = enable)");
 169 module_param_named(audio, radeon_audio, int, 0444);
 170
 171 MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
 172 module_param_named(disp_priority, radeon_disp_priority, int, 0444);
 173
 174 MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
 175 module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
 176
 177 MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
 178 module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
 179
 180 MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
 181 module_param_named(msi, radeon_msi, int, 0444);
 182
 183 MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable)");
 184 module_param_named(lockup_timeout, radeon_lockup_timeout, int, 0444);
 185
 186 static int radeon_suspend(struct drm_device *dev, pm_message_t state)
 187 {
 188         drm_radeon_private_t *dev_priv = dev->dev_private;
 189
 190         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 191                 return 0;
 192
 193         /* Disable *all* interrupts */
 194         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 195                 RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 196         RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 197         return 0;
 198 }
 199
 200 static int radeon_resume(struct drm_device *dev)
 201 {
 202         drm_radeon_private_t *dev_priv = dev->dev_private;
 203
 204         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 205                 return 0;
 206
 207         /* Restore interrupt registers */
 208         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 209                 RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 210         RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 211         return 0;
 212 }
 213 #endif /* DUMBBELL_WIP */
 214
 215 static drm_pci_id_list_t pciidlist[] = {
 216         radeon_PCI_IDS
 217 };
 218
 219 #ifdef DUMBBELL_WIP
 220 static const struct file_operations radeon_driver_old_fops = {
 221         .owner = THIS_MODULE,
 222         .open = drm_open,
 223         .release = drm_release,
 224         .unlocked_ioctl = drm_ioctl,
 225         .mmap = drm_mmap,
 226         .poll = drm_poll,
 227         .fasync = drm_fasync,
 228         .read = drm_read,
 229 #ifdef CONFIG_COMPAT
 230         .compat_ioctl = radeon_compat_ioctl,
 231 #endif
 232         .llseek = noop_llseek,
 233 };
 234
 235 static struct drm_driver driver_old = {
 236         .driver_features =
 237             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
 238             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
 239         .dev_priv_size = sizeof(drm_radeon_buf_priv_t),
 240         .load = radeon_driver_load,
 241         .firstopen = radeon_driver_firstopen,
 242         .open = radeon_driver_open,
 243         .preclose = radeon_driver_preclose,
 244         .postclose = radeon_driver_postclose,
 245         .lastclose = radeon_driver_lastclose,
 246         .unload = radeon_driver_unload,
 247 #ifdef DUMBBELL_WIP
 248         .suspend = radeon_suspend,
 249         .resume = radeon_resume,
 250 #endif /* DUMBBELL_WIP */
 251         .get_vblank_counter = radeon_get_vblank_counter,
 252         .enable_vblank = radeon_enable_vblank,
 253         .disable_vblank = radeon_disable_vblank,
 254         .master_create = radeon_master_create,
 255         .master_destroy = radeon_master_destroy,
 256         .irq_preinstall = radeon_driver_irq_preinstall,
 257         .irq_postinstall = radeon_driver_irq_postinstall,
 258         .irq_uninstall = radeon_driver_irq_uninstall,
 259         .irq_handler = radeon_driver_irq_handler,
 260         .ioctls = radeon_ioctls,
 261         .dma_ioctl = radeon_cp_buffers,
 262         .fops = &radeon_driver_old_fops,
 263         .name = DRIVER_NAME,
 264         .desc = DRIVER_DESC,
 265         .date = DRIVER_DATE,
 266         .major = DRIVER_MAJOR,
 267         .minor = DRIVER_MINOR,
 268         .patchlevel = DRIVER_PATCHLEVEL,
 269 };
 270 #endif /* DUMBBELL_WIP */
 271
 272 static struct drm_driver_info kms_driver;
 273
 274 #ifdef DUMBBELL_WIP
 275 static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
 276 {
 277         struct apertures_struct *ap;
 278         bool primary = false;
 279
 280         ap = alloc_apertures(1);
 281         if (!ap)
 282                 return -ENOMEM;
 283
 284         ap->ranges[0].base = pci_resource_start(pdev, 0);
 285         ap->ranges[0].size = pci_resource_len(pdev, 0);
 286
 287 #ifdef CONFIG_X86
 288         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 289 #endif
 290         remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
 291         kfree(ap);
 292
 293         return 0;
 294 }
 295
 296 static int radeon_pci_probe(struct pci_dev *pdev,
 297                             const struct pci_device_id *ent)
 298 {
 299         int ret;
 300
 301         /* Get rid of things like offb */
 302         ret = radeon_kick_out_firmware_fb(pdev);
 303         if (ret)
 304                 return ret;
 305
 306         return drm_get_pci_dev(pdev, ent, &kms_driver);
 307 }
 308
 309 static void
 310 radeon_pci_remove(struct pci_dev *pdev)
 311 {
 312         struct drm_device *dev = pci_get_drvdata(pdev);
 313
 314         drm_put_dev(dev);
 315 }
 316
 317 static int
 318 radeon_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 319 {
 320         struct drm_device *dev = pci_get_drvdata(pdev);
 321         return radeon_suspend_kms(dev, state);
 322 }
 323
 324 static int
 325 radeon_pci_resume(struct pci_dev *pdev)
 326 {
 327         struct drm_device *dev = pci_get_drvdata(pdev);
 328         return radeon_resume_kms(dev);
 329 }
 330
 331 static const struct file_operations radeon_driver_kms_fops = {
 332         .owner = THIS_MODULE,
 333         .open = drm_open,
 334         .release = drm_release,
 335         .unlocked_ioctl = drm_ioctl,
 336         .mmap = radeon_mmap,
 337         .poll = drm_poll,
 338         .fasync = drm_fasync,
 339         .read = drm_read,
 340 #ifdef CONFIG_COMPAT
 341         .compat_ioctl = radeon_kms_compat_ioctl,
 342 #endif
 343 };
 344 #endif /* DUMBBELL_WIP */
 345
 346 static int radeon_sysctl_init(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 347                               struct sysctl_oid *top)
 348 {
 349         return drm_add_busid_modesetting(dev, ctx, top);
 350 }
 351
 352 static struct drm_driver_info kms_driver = {
 353         .driver_features =
 354             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
 355             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
 356             DRIVER_PRIME /* | DRIVE_MODESET */,
 357 #ifdef DUMBBELL_WIP
 358         .dev_priv_size = 0,
 359 #endif /* DUMBBELL_WIP */
 360         .load = radeon_driver_load_kms,
 361         .use_msi = radeon_msi_ok,
 362         .firstopen = radeon_driver_firstopen_kms,
 363         .open = radeon_driver_open_kms,
 364         .preclose = radeon_driver_preclose_kms,
 365         .postclose = radeon_driver_postclose_kms,
 366         .lastclose = radeon_driver_lastclose_kms,
 367         .unload = radeon_driver_unload_kms,
 368 #ifdef DUMBBELL_WIP
 369         .suspend = radeon_suspend_kms,
 370         .resume = radeon_resume_kms,
 371 #endif /* DUMBBELL_WIP */
 372         .get_vblank_counter = radeon_get_vblank_counter_kms,
 373         .enable_vblank = radeon_enable_vblank_kms,
 374         .disable_vblank = radeon_disable_vblank_kms,
 375         .get_vblank_timestamp = radeon_get_vblank_timestamp_kms,
 376         .get_scanout_position = radeon_get_crtc_scanoutpos,
 377         .irq_preinstall = radeon_driver_irq_preinstall_kms,
 378         .irq_postinstall = radeon_driver_irq_postinstall_kms,
 379         .irq_uninstall = radeon_driver_irq_uninstall_kms,
 380         .irq_handler = radeon_driver_irq_handler_kms,
 381         .sysctl_init = radeon_sysctl_init,
 382         .ioctls = radeon_ioctls_kms,
 383         .gem_init_object = radeon_gem_object_init,
 384         .gem_free_object = radeon_gem_object_free,
 385         .gem_open_object = radeon_gem_object_open,
 386         .gem_close_object = radeon_gem_object_close,
 387         .dma_ioctl = radeon_dma_ioctl_kms,
 388         .dumb_create = radeon_mode_dumb_create,
 389         .dumb_map_offset = radeon_mode_dumb_mmap,
 390         .dumb_destroy = radeon_mode_dumb_destroy,
 391 #ifdef DUMBBELL_WIP
 392         .fops = &radeon_driver_kms_fops,
 393 #endif /* DUMBBELL_WIP */
 394
 395 #ifdef DUMBBELL_WIP
 396         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 397         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 398         .gem_prime_export = radeon_gem_prime_export,
 399         .gem_prime_import = radeon_gem_prime_import,
 400 #endif /* DUMBBELL_WIP */
 401
 402         .name = DRIVER_NAME,
 403         .desc = DRIVER_DESC,
 404         .date = DRIVER_DATE,
 405         .major = KMS_DRIVER_MAJOR,
 406         .minor = KMS_DRIVER_MINOR,
 407         .patchlevel = KMS_DRIVER_PATCHLEVEL,
 408 };
 409
 410 #ifdef DUMBBELL_WIP
 411 static int __init radeon_init(void)
 412 {
 413         driver = &driver_old;
 414         pdriver = &radeon_pci_driver;
 415         driver->num_ioctls = radeon_max_ioctl;
 416 #ifdef CONFIG_VGA_CONSOLE
 417         if (vgacon_text_force() && radeon_modeset == -1) {
 418                 DRM_INFO("VGACON disable radeon kernel modesetting.\n");
 419                 driver = &driver_old;
 420                 pdriver = &radeon_pci_driver;
 421                 driver->driver_features &= ~DRIVER_MODESET;
 422                 radeon_modeset = 0;
 423         }
 424 #endif
 425         /* if enabled by default */
 426         if (radeon_modeset == -1) {
 427 #ifdef CONFIG_DRM_RADEON_KMS
 428                 DRM_INFO("radeon defaulting to kernel modesetting.\n");
 429                 radeon_modeset = 1;
 430 #else
 431                 DRM_INFO("radeon defaulting to userspace modesetting.\n");
 432                 radeon_modeset = 0;
 433 #endif
 434         }
 435         if (radeon_modeset == 1) {
 436                 DRM_INFO("radeon kernel modesetting enabled.\n");
 437                 driver = &kms_driver;
 438                 pdriver = &radeon_kms_pci_driver;
 439                 driver->driver_features |= DRIVER_MODESET;
 440                 driver->num_ioctls = radeon_max_kms_ioctl;
 441                 radeon_register_atpx_handler();
 442         }
 443         /* if the vga console setting is enabled still
 444          * let modprobe override it */
 445         return drm_pci_init(driver, pdriver);
 446 }
 447
 448 static void __exit radeon_exit(void)
 449 {
 450         drm_pci_exit(driver, pdriver);
 451         radeon_unregister_atpx_handler();
 452 }
 453 #endif /* DUMBBELL_WIP */
 454
 455 /* =================================================================== */
 456
 457 static int
 458 radeon_probe(device_t kdev)
 459 {
 460
 461         return drm_probe(kdev, pciidlist);
 462 }
 463
 464 static int
 465 radeon_attach(device_t kdev)
 466 {
 467         struct drm_device *dev;
 468
 469         dev = device_get_softc(kdev);
 470         if (radeon_modeset == 1) {
 471                 kms_driver.driver_features |= DRIVER_MODESET;
 472                 kms_driver.max_ioctl = radeon_max_kms_ioctl;
 473 #ifdef COMPAT_FREEBSD32
 474                 kms_driver.compat_ioctls = radeon_compat_ioctls;
 475                 kms_driver.compat_ioctls_nr = &radeon_num_compat_ioctls;
 476 #endif
 477                 radeon_register_atpx_handler();
 478         }
 479         dev->driver = &kms_driver;
 480         return (drm_attach(kdev, pciidlist));
 481 }
 482
 483 static int
 484 radeon_suspend(device_t kdev)
 485 {
 486         struct drm_device *dev;
 487         int ret;
 488
 489         dev = device_get_softc(kdev);
 490         ret = radeon_suspend_kms(dev);
 491
 492         return (-ret);
 493 }
 494
 495 static int
 496 radeon_resume(device_t kdev)
 497 {
 498         struct drm_device *dev;
 499         int ret;
 500
 501         dev = device_get_softc(kdev);
 502         ret = radeon_resume_kms(dev);
 503
 504         return (-ret);
 505 }
 506
 507 extern struct fb_info * radeon_fb_helper_getinfo(device_t kdev);
 508
 509 static device_method_t radeon_methods[] = {
 510         /* Device interface */
 511         DEVMETHOD(device_probe,         radeon_probe),
 512         DEVMETHOD(device_attach,        radeon_attach),
 513         DEVMETHOD(device_suspend,       radeon_suspend),
 514         DEVMETHOD(device_resume,        radeon_resume),
 515         DEVMETHOD(device_detach,        drm_detach),
 516
 517         /* Framebuffer service methods */
 518         DEVMETHOD(fb_getinfo,           radeon_fb_helper_getinfo),
 519
 520         DEVMETHOD_END
 521 };
 522
 523 static driver_t radeon_driver = {
 524         "drmn",
 525         radeon_methods,
 526         sizeof(struct drm_device)
 527 };
 528
 529 extern devclass_t drm_devclass;
 530 DRIVER_MODULE_ORDERED(radeonkms, vgapci, radeon_driver, drm_devclass,
 531     NULL, NULL, SI_ORDER_ANY);
 532 MODULE_DEPEND(radeonkms, drmn, 1, 1, 1);
 533 MODULE_DEPEND(radeonkms, agp, 1, 1, 1);
 534 MODULE_DEPEND(radeonkms, iicbus, 1, 1, 1);
 535 MODULE_DEPEND(radeonkms, iic, 1, 1, 1);
 536 MODULE_DEPEND(radeonkms, iicbb, 1, 1, 1);
 537 MODULE_DEPEND(radeonkms, firmware, 1, 1, 1);