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  */
  77 #define KMS_DRIVER_MAJOR        2
  78 #define KMS_DRIVER_MINOR        30
  79 #define KMS_DRIVER_PATCHLEVEL   0
  80 int radeon_suspend_kms(struct drm_device *dev);
  81 int radeon_resume_kms(struct drm_device *dev);
  82 extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
  83                                       int *vpos, int *hpos);
  84 extern struct drm_ioctl_desc radeon_ioctls_kms[];
  85 extern int radeon_max_kms_ioctl;
  86 #ifdef DUMBBELL_WIP
  87 int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
  88 #endif /* DUMBBELL_WIP */
  89 int radeon_mode_dumb_mmap(struct drm_file *filp,
  90                           struct drm_device *dev,
  91                           uint32_t handle, uint64_t *offset_p);
  92 int radeon_mode_dumb_create(struct drm_file *file_priv,
  93                             struct drm_device *dev,
  94                             struct drm_mode_create_dumb *args);
  95 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
  96                              struct drm_device *dev,
  97                              uint32_t handle);
  98 struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
  99 struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
 100                                                         size_t size,
 101                                                         struct sg_table *sg);
 102 int radeon_gem_prime_pin(struct drm_gem_object *obj);
 103 void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
 104 void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 105
 106 #if defined(CONFIG_DEBUG_FS)
 107 int radeon_debugfs_init(struct drm_minor *minor);
 108 void radeon_debugfs_cleanup(struct drm_minor *minor);
 109 #endif
 110
 111 /* atpx handler */
 112 #if defined(CONFIG_VGA_SWITCHEROO)
 113 void radeon_register_atpx_handler(void);
 114 void radeon_unregister_atpx_handler(void);
 115 #else
 116 static inline void radeon_register_atpx_handler(void) {}
 117 static inline void radeon_unregister_atpx_handler(void) {}
 118 #endif
 119
 120 int radeon_no_wb;
 121 int radeon_modeset = 1;
 122 int radeon_dynclks = -1;
 123 int radeon_r4xx_atom = 0;
 124 int radeon_agpmode = 0;
 125 int radeon_vram_limit = 0;
 126 int radeon_gart_size = 512; /* default gart size */
 127 int radeon_benchmarking = 0;
 128 int radeon_testing = 0;
 129 int radeon_connector_table = 0;
 130 int radeon_tv = 1;
 131 int radeon_audio = 0;
 132 int radeon_disp_priority = 0;
 133 int radeon_hw_i2c = 0;
 134 int radeon_pcie_gen2 = -1;
 135 int radeon_msi = -1;
 136 int radeon_lockup_timeout = 10000;
 137
 138 static drm_pci_id_list_t pciidlist[] = {
 139         radeon_PCI_IDS
 140 };
 141
 142 #ifdef CONFIG_DRM_RADEON_UMS
 143
 144 #ifdef DUMBBELL_WIP
 145 MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
 146 module_param_named(no_wb, radeon_no_wb, int, 0444);
 147
 148 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 149 module_param_named(modeset, radeon_modeset, int, 0400);
 150
 151 MODULE_PARM_DESC(dynclks, "Disable/Enable dynamic clocks");
 152 module_param_named(dynclks, radeon_dynclks, int, 0444);
 153
 154 MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
 155 module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
 156
 157 MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing");
 158 module_param_named(vramlimit, radeon_vram_limit, int, 0600);
 159
 160 MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
 161 module_param_named(agpmode, radeon_agpmode, int, 0444);
 162
 163 MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc)");
 164 module_param_named(gartsize, radeon_gart_size, int, 0600);
 165
 166 MODULE_PARM_DESC(benchmark, "Run benchmark");
 167 module_param_named(benchmark, radeon_benchmarking, int, 0444);
 168
 169 MODULE_PARM_DESC(test, "Run tests");
 170 module_param_named(test, radeon_testing, int, 0444);
 171
 172 MODULE_PARM_DESC(connector_table, "Force connector table");
 173 module_param_named(connector_table, radeon_connector_table, int, 0444);
 174
 175 MODULE_PARM_DESC(tv, "TV enable (0 = disable)");
 176 module_param_named(tv, radeon_tv, int, 0444);
 177
 178 MODULE_PARM_DESC(audio, "Audio enable (1 = enable)");
 179 module_param_named(audio, radeon_audio, int, 0444);
 180
 181 MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
 182 module_param_named(disp_priority, radeon_disp_priority, int, 0444);
 183
 184 MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
 185 module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
 186
 187 MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
 188 module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
 189
 190 MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
 191 module_param_named(msi, radeon_msi, int, 0444);
 192
 193 MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable)");
 194 module_param_named(lockup_timeout, radeon_lockup_timeout, int, 0444);
 195
 196 static int radeon_suspend(struct drm_device *dev, pm_message_t state)
 197 {
 198         drm_radeon_private_t *dev_priv = dev->dev_private;
 199
 200         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 201                 return 0;
 202
 203         /* Disable *all* interrupts */
 204         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 205                 RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 206         RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
 207         return 0;
 208 }
 209
 210 static int radeon_resume(struct drm_device *dev)
 211 {
 212         drm_radeon_private_t *dev_priv = dev->dev_private;
 213
 214         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
 215                 return 0;
 216
 217         /* Restore interrupt registers */
 218         if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
 219                 RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 220         RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 221         return 0;
 222 }
 223 #endif /* DUMBBELL_WIP */
 224
 225 #ifdef DUMBBELL_WIP
 226 static const struct file_operations radeon_driver_old_fops = {
 227         .owner = THIS_MODULE,
 228         .open = drm_open,
 229         .release = drm_release,
 230         .unlocked_ioctl = drm_ioctl,
 231         .mmap = drm_mmap,
 232         .poll = drm_poll,
 233         .fasync = drm_fasync,
 234         .read = drm_read,
 235 #ifdef CONFIG_COMPAT
 236         .compat_ioctl = radeon_compat_ioctl,
 237 #endif
 238         .llseek = noop_llseek,
 239 };
 240
 241 static struct drm_driver driver_old = {
 242         .driver_features =
 243             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
 244             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
 245         .dev_priv_size = sizeof(drm_radeon_buf_priv_t),
 246         .load = radeon_driver_load,
 247         .firstopen = radeon_driver_firstopen,
 248         .open = radeon_driver_open,
 249         .preclose = radeon_driver_preclose,
 250         .postclose = radeon_driver_postclose,
 251         .lastclose = radeon_driver_lastclose,
 252         .unload = radeon_driver_unload,
 253 #ifdef DUMBBELL_WIP
 254         .suspend = radeon_suspend,
 255         .resume = radeon_resume,
 256 #endif /* DUMBBELL_WIP */
 257         .get_vblank_counter = radeon_get_vblank_counter,
 258         .enable_vblank = radeon_enable_vblank,
 259         .disable_vblank = radeon_disable_vblank,
 260         .master_create = radeon_master_create,
 261         .master_destroy = radeon_master_destroy,
 262         .irq_preinstall = radeon_driver_irq_preinstall,
 263         .irq_postinstall = radeon_driver_irq_postinstall,
 264         .irq_uninstall = radeon_driver_irq_uninstall,
 265         .irq_handler = radeon_driver_irq_handler,
 266         .ioctls = radeon_ioctls,
 267         .dma_ioctl = radeon_cp_buffers,
 268         .fops = &radeon_driver_old_fops,
 269         .name = DRIVER_NAME,
 270         .desc = DRIVER_DESC,
 271         .date = DRIVER_DATE,
 272         .major = DRIVER_MAJOR,
 273         .minor = DRIVER_MINOR,
 274         .patchlevel = DRIVER_PATCHLEVEL,
 275 };
 276 #endif /* DUMBBELL_WIP */
 277
 278 #endif
 279
 280 static struct drm_driver kms_driver;
 281
 282 #ifdef DUMBBELL_WIP
 283 static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
 284 {
 285         struct apertures_struct *ap;
 286         bool primary = false;
 287
 288         ap = alloc_apertures(1);
 289         if (!ap)
 290                 return -ENOMEM;
 291
 292         ap->ranges[0].base = pci_resource_start(pdev, 0);
 293         ap->ranges[0].size = pci_resource_len(pdev, 0);
 294
 295 #ifdef CONFIG_X86
 296         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 297 #endif
 298         remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
 299         kfree(ap);
 300
 301         return 0;
 302 }
 303
 304 static int radeon_pci_probe(struct pci_dev *pdev,
 305                             const struct pci_device_id *ent)
 306 {
 307         int ret;
 308
 309         /* Get rid of things like offb */
 310         ret = radeon_kick_out_firmware_fb(pdev);
 311         if (ret)
 312                 return ret;
 313
 314         return drm_get_pci_dev(pdev, ent, &kms_driver);
 315 }
 316
 317 static void
 318 radeon_pci_remove(struct pci_dev *pdev)
 319 {
 320         struct drm_device *dev = pci_get_drvdata(pdev);
 321
 322         drm_put_dev(dev);
 323 }
 324
 325 static int
 326 radeon_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 327 {
 328         struct drm_device *dev = pci_get_drvdata(pdev);
 329         return radeon_suspend_kms(dev, state);
 330 }
 331
 332 static int
 333 radeon_pci_resume(struct pci_dev *pdev)
 334 {
 335         struct drm_device *dev = pci_get_drvdata(pdev);
 336         return radeon_resume_kms(dev);
 337 }
 338
 339 static const struct file_operations radeon_driver_kms_fops = {
 340         .owner = THIS_MODULE,
 341         .open = drm_open,
 342         .release = drm_release,
 343         .unlocked_ioctl = drm_ioctl,
 344         .mmap = radeon_mmap,
 345         .poll = drm_poll,
 346         .fasync = drm_fasync,
 347         .read = drm_read,
 348 #ifdef CONFIG_COMPAT
 349         .compat_ioctl = radeon_kms_compat_ioctl,
 350 #endif
 351 };
 352 #endif /* DUMBBELL_WIP */
 353
 354 static struct drm_driver kms_driver = {
 355         .driver_features =
 356             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
 357             DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
 358             DRIVER_PRIME /* | DRIVE_MODESET */,
 359 #ifdef DUMBBELL_WIP
 360         .dev_priv_size = 0,
 361 #endif /* DUMBBELL_WIP */
 362         .load = radeon_driver_load_kms,
 363         .use_msi = radeon_msi_ok,
 364         .firstopen = radeon_driver_firstopen_kms,
 365         .open = radeon_driver_open_kms,
 366         .preclose = radeon_driver_preclose_kms,
 367         .postclose = radeon_driver_postclose_kms,
 368         .lastclose = radeon_driver_lastclose_kms,
 369         .unload = radeon_driver_unload_kms,
 370 #ifdef DUMBBELL_WIP
 371         .suspend = radeon_suspend_kms,
 372         .resume = radeon_resume_kms,
 373 #endif /* DUMBBELL_WIP */
 374         .get_vblank_counter = radeon_get_vblank_counter_kms,
 375         .enable_vblank = radeon_enable_vblank_kms,
 376         .disable_vblank = radeon_disable_vblank_kms,
 377         .get_vblank_timestamp = radeon_get_vblank_timestamp_kms,
 378         .get_scanout_position = radeon_get_crtc_scanoutpos,
 379         .irq_preinstall = radeon_driver_irq_preinstall_kms,
 380         .irq_postinstall = radeon_driver_irq_postinstall_kms,
 381         .irq_uninstall = radeon_driver_irq_uninstall_kms,
 382         .irq_handler = radeon_driver_irq_handler_kms,
 383         .ioctls = radeon_ioctls_kms,
 384         .gem_init_object = radeon_gem_object_init,
 385         .gem_free_object = radeon_gem_object_free,
 386         .gem_open_object = radeon_gem_object_open,
 387         .gem_close_object = radeon_gem_object_close,
 388         .dma_ioctl = radeon_dma_ioctl_kms,
 389         .dumb_create = radeon_mode_dumb_create,
 390         .dumb_map_offset = radeon_mode_dumb_mmap,
 391         .dumb_destroy = radeon_mode_dumb_destroy,
 392 #ifdef DUMBBELL_WIP
 393         .fops = &radeon_driver_kms_fops,
 394 #endif /* DUMBBELL_WIP */
 395
 396 #ifdef DUMBBELL_WIP
 397         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 398         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 399         .gem_prime_export = drm_gem_prime_export,
 400         .gem_prime_import = drm_gem_prime_import,
 401         .gem_prime_pin = radeon_gem_prime_pin,
 402         .gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
 403         .gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
 404         .gem_prime_vmap = radeon_gem_prime_vmap,
 405         .gem_prime_vunmap = radeon_gem_prime_vunmap,
 406 #endif /* DUMBBELL_WIP */
 407
 408         .name = DRIVER_NAME,
 409         .desc = DRIVER_DESC,
 410         .date = DRIVER_DATE,
 411         .major = KMS_DRIVER_MAJOR,
 412         .minor = KMS_DRIVER_MINOR,
 413         .patchlevel = KMS_DRIVER_PATCHLEVEL,
 414 };
 415
 416 #ifdef DUMBBELL_WIP
 417 static int __init radeon_init(void)
 418 {
 419         if (radeon_modeset == 1) {
 420                 DRM_INFO("radeon kernel modesetting enabled.\n");
 421                 driver = &kms_driver;
 422                 pdriver = &radeon_kms_pci_driver;
 423                 driver->driver_features |= DRIVER_MODESET;
 424                 driver->num_ioctls = radeon_max_kms_ioctl;
 425                 radeon_register_atpx_handler();
 426
 427         } else {
 428 #ifdef CONFIG_DRM_RADEON_UMS
 429                 DRM_INFO("radeon userspace modesetting enabled.\n");
 430                 driver = &driver_old;
 431                 pdriver = &radeon_pci_driver;
 432                 driver->driver_features &= ~DRIVER_MODESET;
 433                 driver->num_ioctls = radeon_max_ioctl;
 434 #else
 435                 DRM_ERROR("No UMS support in radeon module!\n");
 436                 return -EINVAL;
 437 #endif
 438         }
 439
 440         /* let modprobe override vga console setting */
 441         return drm_pci_init(driver, pdriver);
 442 }
 443
 444 static void __exit radeon_exit(void)
 445 {
 446         drm_pci_exit(driver, pdriver);
 447         radeon_unregister_atpx_handler();
 448 }
 449 #endif /* DUMBBELL_WIP */
 450
 451 /* =================================================================== */
 452
 453 static int
 454 radeon_probe(device_t kdev)
 455 {
 456
 457         return drm_probe(kdev, pciidlist);
 458 }
 459
 460 static int
 461 radeon_attach(device_t kdev)
 462 {
 463         struct drm_device *dev;
 464
 465         dev = device_get_softc(kdev);
 466         if (radeon_modeset == 1) {
 467                 kms_driver.driver_features |= DRIVER_MODESET;
 468                 kms_driver.num_ioctls = radeon_max_kms_ioctl;
 469                 radeon_register_atpx_handler();
 470         }
 471         dev->driver = &kms_driver;
 472         return (drm_attach(kdev, pciidlist));
 473 }
 474
 475 static int
 476 radeon_suspend(device_t kdev)
 477 {
 478         struct drm_device *dev;
 479         int ret;
 480
 481         dev = device_get_softc(kdev);
 482         ret = radeon_suspend_kms(dev);
 483
 484         return (-ret);
 485 }
 486
 487 static int
 488 radeon_resume(device_t kdev)
 489 {
 490         struct drm_device *dev;
 491         int ret;
 492
 493         dev = device_get_softc(kdev);
 494         ret = radeon_resume_kms(dev);
 495
 496         return (-ret);
 497 }
 498
 499 static device_method_t radeon_methods[] = {
 500         /* Device interface */
 501         DEVMETHOD(device_probe,         radeon_probe),
 502         DEVMETHOD(device_attach,        radeon_attach),
 503         DEVMETHOD(device_suspend,       radeon_suspend),
 504         DEVMETHOD(device_resume,        radeon_resume),
 505         DEVMETHOD(device_detach,        drm_release),
 506         DEVMETHOD_END
 507 };
 508
 509 static driver_t radeon_driver = {
 510         "drm",
 511         radeon_methods,
 512         sizeof(struct drm_device)
 513 };
 514
 515 extern devclass_t drm_devclass;
 516 DRIVER_MODULE_ORDERED(radeonkms, vgapci, radeon_driver, drm_devclass,
 517     NULL, NULL, SI_ORDER_ANY);
 518 MODULE_DEPEND(radeonkms, drm, 1, 1, 1);
 519 MODULE_DEPEND(radeonkms, agp, 1, 1, 1);
 520 MODULE_DEPEND(radeonkms, iicbus, 1, 1, 1);
 521 MODULE_DEPEND(radeonkms, iic, 1, 1, 1);
 522 MODULE_DEPEND(radeonkms, iicbb, 1, 1, 1);