1 /* i915_drv.c -- Intel i915 driver -*- linux-c -*- 2 * Created: Wed Feb 14 17:10:04 2001 by gareth@valinux.com 3 */ 4 /*- 5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 6 * All Rights Reserved. 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 * Authors: 28 * Gareth Hughes <gareth@valinux.com> 29 * 30 * $FreeBSD: src/sys/dev/drm2/i915/i915_drv.c,v 1.1 2012/05/22 11:07:44 kib Exp $ 31 */ 32 33 #include <drm/drmP.h> 34 #include <drm/i915_drm.h> 35 #include "i915_drv.h" 36 #include <drm/drm_pciids.h> 37 #include "intel_drv.h" 38 39 /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */ 40 static drm_pci_id_list_t i915_pciidlist[] = { 41 i915_PCI_IDS 42 }; 43 44 #define INTEL_VGA_DEVICE(id, info_) { \ 45 .device = id, \ 46 .info = info_, \ 47 } 48 49 static const struct intel_device_info intel_i830_info = { 50 .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, 51 .has_overlay = 1, .overlay_needs_physical = 1, 52 }; 53 54 static const struct intel_device_info intel_845g_info = { 55 .gen = 2, 56 .has_overlay = 1, .overlay_needs_physical = 1, 57 }; 58 59 static const struct intel_device_info intel_i85x_info = { 60 .gen = 2, .is_i85x = 1, .is_mobile = 1, 61 .cursor_needs_physical = 1, 62 .has_overlay = 1, .overlay_needs_physical = 1, 63 }; 64 65 static const struct intel_device_info intel_i865g_info = { 66 .gen = 2, 67 .has_overlay = 1, .overlay_needs_physical = 1, 68 }; 69 70 static const struct intel_device_info intel_i915g_info = { 71 .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, 72 .has_overlay = 1, .overlay_needs_physical = 1, 73 }; 74 static const struct intel_device_info intel_i915gm_info = { 75 .gen = 3, .is_mobile = 1, 76 .cursor_needs_physical = 1, 77 .has_overlay = 1, .overlay_needs_physical = 1, 78 .supports_tv = 1, 79 }; 80 static const struct intel_device_info intel_i945g_info = { 81 .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, 82 .has_overlay = 1, .overlay_needs_physical = 1, 83 }; 84 static const struct intel_device_info intel_i945gm_info = { 85 .gen = 3, .is_i945gm = 1, .is_mobile = 1, 86 .has_hotplug = 1, .cursor_needs_physical = 1, 87 .has_overlay = 1, .overlay_needs_physical = 1, 88 .supports_tv = 1, 89 }; 90 91 static const struct intel_device_info intel_i965g_info = { 92 .gen = 4, .is_broadwater = 1, 93 .has_hotplug = 1, 94 .has_overlay = 1, 95 }; 96 97 static const struct intel_device_info intel_i965gm_info = { 98 .gen = 4, .is_crestline = 1, 99 .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1, 100 .has_overlay = 1, 101 .supports_tv = 1, 102 }; 103 104 static const struct intel_device_info intel_g33_info = { 105 .gen = 3, .is_g33 = 1, 106 .need_gfx_hws = 1, .has_hotplug = 1, 107 .has_overlay = 1, 108 }; 109 110 static const struct intel_device_info intel_g45_info = { 111 .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, 112 .has_pipe_cxsr = 1, .has_hotplug = 1, 113 .has_bsd_ring = 1, 114 }; 115 116 static const struct intel_device_info intel_gm45_info = { 117 .gen = 4, .is_g4x = 1, 118 .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, 119 .has_pipe_cxsr = 1, .has_hotplug = 1, 120 .supports_tv = 1, 121 .has_bsd_ring = 1, 122 }; 123 124 static const struct intel_device_info intel_pineview_info = { 125 .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, 126 .need_gfx_hws = 1, .has_hotplug = 1, 127 .has_overlay = 1, 128 }; 129 130 static const struct intel_device_info intel_ironlake_d_info = { 131 .gen = 5, 132 .need_gfx_hws = 1, .has_hotplug = 1, 133 .has_bsd_ring = 1, 134 }; 135 136 static const struct intel_device_info intel_ironlake_m_info = { 137 .gen = 5, .is_mobile = 1, 138 .need_gfx_hws = 1, .has_hotplug = 1, 139 .has_fbc = 0, /* disabled due to buggy hardware */ 140 .has_bsd_ring = 1, 141 }; 142 143 static const struct intel_device_info intel_sandybridge_d_info = { 144 .gen = 6, 145 .need_gfx_hws = 1, .has_hotplug = 1, 146 .has_bsd_ring = 1, 147 .has_blt_ring = 1, 148 .has_llc = 1, 149 .has_force_wake = 1, 150 }; 151 152 static const struct intel_device_info intel_sandybridge_m_info = { 153 .gen = 6, .is_mobile = 1, 154 .need_gfx_hws = 1, .has_hotplug = 1, 155 .has_fbc = 1, 156 .has_bsd_ring = 1, 157 .has_blt_ring = 1, 158 .has_llc = 1, 159 .has_force_wake = 1, 160 }; 161 162 static const struct intel_device_info intel_ivybridge_d_info = { 163 .is_ivybridge = 1, .gen = 7, 164 .need_gfx_hws = 1, .has_hotplug = 1, 165 .has_bsd_ring = 1, 166 .has_blt_ring = 1, 167 .has_llc = 1, 168 .has_force_wake = 1, 169 }; 170 171 static const struct intel_device_info intel_ivybridge_m_info = { 172 .is_ivybridge = 1, .gen = 7, .is_mobile = 1, 173 .need_gfx_hws = 1, .has_hotplug = 1, 174 .has_fbc = 0, /* FBC is not enabled on Ivybridge mobile yet */ 175 .has_bsd_ring = 1, 176 .has_blt_ring = 1, 177 .has_llc = 1, 178 .has_force_wake = 1, 179 }; 180 181 static const struct intel_device_info intel_valleyview_m_info = { 182 .gen = 7, .is_mobile = 1, 183 .need_gfx_hws = 1, .has_hotplug = 1, 184 .has_fbc = 0, 185 .has_bsd_ring = 1, 186 .has_blt_ring = 1, 187 .is_valleyview = 1, 188 }; 189 190 static const struct intel_device_info intel_valleyview_d_info = { 191 .gen = 7, 192 .need_gfx_hws = 1, .has_hotplug = 1, 193 .has_fbc = 0, 194 .has_bsd_ring = 1, 195 .has_blt_ring = 1, 196 .is_valleyview = 1, 197 }; 198 199 static const struct intel_device_info intel_haswell_d_info = { 200 .is_haswell = 1, .gen = 7, 201 .need_gfx_hws = 1, .has_hotplug = 1, 202 .has_bsd_ring = 1, 203 .has_blt_ring = 1, 204 .has_llc = 1, 205 .has_force_wake = 1, 206 }; 207 208 static const struct intel_device_info intel_haswell_m_info = { 209 .is_haswell = 1, .gen = 7, .is_mobile = 1, 210 .need_gfx_hws = 1, .has_hotplug = 1, 211 .has_bsd_ring = 1, 212 .has_blt_ring = 1, 213 .has_llc = 1, 214 .has_force_wake = 1, 215 }; 216 217 static const struct intel_gfx_device_id { 218 int device; 219 const struct intel_device_info *info; 220 } pciidlist[] = { /* aka */ 221 INTEL_VGA_DEVICE(0x3577, &intel_i830_info), /* I830_M */ 222 INTEL_VGA_DEVICE(0x2562, &intel_845g_info), /* 845_G */ 223 INTEL_VGA_DEVICE(0x3582, &intel_i85x_info), /* I855_GM */ 224 INTEL_VGA_DEVICE(0x358e, &intel_i85x_info), 225 INTEL_VGA_DEVICE(0x2572, &intel_i865g_info), /* I865_G */ 226 INTEL_VGA_DEVICE(0x2582, &intel_i915g_info), /* I915_G */ 227 INTEL_VGA_DEVICE(0x258a, &intel_i915g_info), /* E7221_G */ 228 INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info), /* I915_GM */ 229 INTEL_VGA_DEVICE(0x2772, &intel_i945g_info), /* I945_G */ 230 INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info), /* I945_GM */ 231 INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info), /* I945_GME */ 232 INTEL_VGA_DEVICE(0x2972, &intel_i965g_info), /* I946_GZ */ 233 INTEL_VGA_DEVICE(0x2982, &intel_i965g_info), /* G35_G */ 234 INTEL_VGA_DEVICE(0x2992, &intel_i965g_info), /* I965_Q */ 235 INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info), /* I965_G */ 236 INTEL_VGA_DEVICE(0x29b2, &intel_g33_info), /* Q35_G */ 237 INTEL_VGA_DEVICE(0x29c2, &intel_g33_info), /* G33_G */ 238 INTEL_VGA_DEVICE(0x29d2, &intel_g33_info), /* Q33_G */ 239 INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info), /* I965_GM */ 240 INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info), /* I965_GME */ 241 INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info), /* GM45_G */ 242 INTEL_VGA_DEVICE(0x2e02, &intel_g45_info), /* IGD_E_G */ 243 INTEL_VGA_DEVICE(0x2e12, &intel_g45_info), /* Q45_G */ 244 INTEL_VGA_DEVICE(0x2e22, &intel_g45_info), /* G45_G */ 245 INTEL_VGA_DEVICE(0x2e32, &intel_g45_info), /* G41_G */ 246 INTEL_VGA_DEVICE(0x2e42, &intel_g45_info), /* B43_G */ 247 INTEL_VGA_DEVICE(0x2e92, &intel_g45_info), /* B43_G.1 */ 248 INTEL_VGA_DEVICE(0xa001, &intel_pineview_info), 249 INTEL_VGA_DEVICE(0xa011, &intel_pineview_info), 250 INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info), 251 INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info), 252 INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info), 253 INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info), 254 INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info), 255 INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info), 256 INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info), 257 INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info), 258 INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info), 259 INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info), /* GT1 mobile */ 260 INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info), /* GT2 mobile */ 261 INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info), /* GT1 desktop */ 262 INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info), /* GT2 desktop */ 263 INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info), /* GT1 server */ 264 INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info), /* GT2 server */ 265 INTEL_VGA_DEVICE(0x0402, &intel_haswell_d_info), /* GT1 desktop */ 266 INTEL_VGA_DEVICE(0x0412, &intel_haswell_d_info), /* GT2 desktop */ 267 INTEL_VGA_DEVICE(0x0422, &intel_haswell_d_info), /* GT2 desktop */ 268 INTEL_VGA_DEVICE(0x040a, &intel_haswell_d_info), /* GT1 server */ 269 INTEL_VGA_DEVICE(0x041a, &intel_haswell_d_info), /* GT2 server */ 270 INTEL_VGA_DEVICE(0x042a, &intel_haswell_d_info), /* GT2 server */ 271 INTEL_VGA_DEVICE(0x0406, &intel_haswell_m_info), /* GT1 mobile */ 272 INTEL_VGA_DEVICE(0x0416, &intel_haswell_m_info), /* GT2 mobile */ 273 INTEL_VGA_DEVICE(0x0426, &intel_haswell_m_info), /* GT2 mobile */ 274 INTEL_VGA_DEVICE(0x0C02, &intel_haswell_d_info), /* SDV GT1 desktop */ 275 INTEL_VGA_DEVICE(0x0C12, &intel_haswell_d_info), /* SDV GT2 desktop */ 276 INTEL_VGA_DEVICE(0x0C22, &intel_haswell_d_info), /* SDV GT2 desktop */ 277 INTEL_VGA_DEVICE(0x0C0A, &intel_haswell_d_info), /* SDV GT1 server */ 278 INTEL_VGA_DEVICE(0x0C1A, &intel_haswell_d_info), /* SDV GT2 server */ 279 INTEL_VGA_DEVICE(0x0C2A, &intel_haswell_d_info), /* SDV GT2 server */ 280 INTEL_VGA_DEVICE(0x0C06, &intel_haswell_m_info), /* SDV GT1 mobile */ 281 INTEL_VGA_DEVICE(0x0C16, &intel_haswell_m_info), /* SDV GT2 mobile */ 282 INTEL_VGA_DEVICE(0x0C26, &intel_haswell_m_info), /* SDV GT2 mobile */ 283 INTEL_VGA_DEVICE(0x0A02, &intel_haswell_d_info), /* ULT GT1 desktop */ 284 INTEL_VGA_DEVICE(0x0A12, &intel_haswell_d_info), /* ULT GT2 desktop */ 285 INTEL_VGA_DEVICE(0x0A22, &intel_haswell_d_info), /* ULT GT2 desktop */ 286 INTEL_VGA_DEVICE(0x0A0A, &intel_haswell_d_info), /* ULT GT1 server */ 287 INTEL_VGA_DEVICE(0x0A1A, &intel_haswell_d_info), /* ULT GT2 server */ 288 INTEL_VGA_DEVICE(0x0A2A, &intel_haswell_d_info), /* ULT GT2 server */ 289 INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info), /* ULT GT1 mobile */ 290 INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info), /* ULT GT2 mobile */ 291 INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info), /* ULT GT2 mobile */ 292 INTEL_VGA_DEVICE(0x0D02, &intel_haswell_d_info), /* CRW GT1 desktop */ 293 INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT2 desktop */ 294 INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info), /* CRW GT2 desktop */ 295 INTEL_VGA_DEVICE(0x0D0A, &intel_haswell_d_info), /* CRW GT1 server */ 296 INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT2 server */ 297 INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info), /* CRW GT2 server */ 298 INTEL_VGA_DEVICE(0x0D06, &intel_haswell_m_info), /* CRW GT1 mobile */ 299 INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT2 mobile */ 300 INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info), /* CRW GT2 mobile */ 301 INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info), 302 INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info), 303 INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info), 304 {0, 0} 305 }; 306 307 #define PCI_VENDOR_INTEL 0x8086 308 309 void intel_detect_pch(struct drm_device *dev) 310 { 311 struct drm_i915_private *dev_priv = dev->dev_private; 312 device_t pch; 313 314 /* 315 * The reason to probe ISA bridge instead of Dev31:Fun0 is to 316 * make graphics device passthrough work easy for VMM, that only 317 * need to expose ISA bridge to let driver know the real hardware 318 * underneath. This is a requirement from virtualization team. 319 */ 320 pch = pci_find_class(PCIC_BRIDGE, PCIS_BRIDGE_ISA); 321 if (pch) { 322 if (pci_get_vendor(pch) == PCI_VENDOR_INTEL) { 323 unsigned short id; 324 id = pci_get_device(pch) & INTEL_PCH_DEVICE_ID_MASK; 325 dev_priv->pch_id = id; 326 327 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) { 328 dev_priv->pch_type = PCH_IBX; 329 dev_priv->num_pch_pll = 2; 330 DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); 331 WARN_ON(!IS_GEN5(dev)); 332 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { 333 dev_priv->pch_type = PCH_CPT; 334 dev_priv->num_pch_pll = 2; 335 DRM_DEBUG_KMS("Found CougarPoint PCH\n"); 336 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); 337 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) { 338 /* PantherPoint is CPT compatible */ 339 dev_priv->pch_type = PCH_CPT; 340 dev_priv->num_pch_pll = 2; 341 DRM_DEBUG_KMS("Found PatherPoint PCH\n"); 342 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); 343 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { 344 dev_priv->pch_type = PCH_LPT; 345 dev_priv->num_pch_pll = 0; 346 DRM_DEBUG_KMS("Found LynxPoint PCH\n"); 347 WARN_ON(!IS_HASWELL(dev)); 348 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { 349 dev_priv->pch_type = PCH_LPT; 350 dev_priv->num_pch_pll = 0; 351 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); 352 WARN_ON(!IS_HASWELL(dev)); 353 } 354 BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS); 355 } 356 #if 0 357 pci_dev_put(pch); 358 #endif 359 } 360 } 361 362 static int i915_drm_freeze(struct drm_device *dev) 363 { 364 struct drm_i915_private *dev_priv = dev->dev_private; 365 366 drm_kms_helper_poll_disable(dev); 367 368 #if 0 369 pci_save_state(dev->pdev); 370 #endif 371 372 /* If KMS is active, we do the leavevt stuff here */ 373 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 374 int error = i915_gem_idle(dev); 375 if (error) { 376 device_printf(dev->dev, 377 "GEM idle failed, resume might fail"); 378 return error; 379 } 380 cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); 381 382 #if 0 383 intel_modeset_disable(dev); 384 #endif 385 386 drm_irq_uninstall(dev); 387 } 388 389 i915_save_state(dev); 390 391 intel_opregion_fini(dev); 392 393 /* Modeset on resume, not lid events */ 394 dev_priv->modeset_on_lid = 0; 395 396 return 0; 397 } 398 399 static int 400 i915_suspend(device_t kdev) 401 { 402 struct drm_device *dev; 403 int error; 404 405 dev = device_get_softc(kdev); 406 if (dev == NULL || dev->dev_private == NULL) { 407 DRM_ERROR("DRM not initialized, aborting suspend.\n"); 408 return -ENODEV; 409 } 410 411 DRM_DEBUG_KMS("starting suspend\n"); 412 error = i915_drm_freeze(dev); 413 if (error) 414 return (error); 415 416 error = bus_generic_suspend(kdev); 417 DRM_DEBUG_KMS("finished suspend %d\n", error); 418 return (error); 419 } 420 421 static int i915_drm_thaw(struct drm_device *dev) 422 { 423 struct drm_i915_private *dev_priv = dev->dev_private; 424 int error = 0; 425 426 DRM_LOCK(dev); 427 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 428 i915_gem_restore_gtt_mappings(dev); 429 } 430 431 i915_restore_state(dev); 432 intel_opregion_setup(dev); 433 434 /* KMS EnterVT equivalent */ 435 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 436 dev_priv->mm.suspended = 0; 437 438 error = i915_gem_init_hw(dev); 439 440 if (HAS_PCH_SPLIT(dev)) 441 ironlake_init_pch_refclk(dev); 442 443 DRM_UNLOCK(dev); 444 lockmgr(&dev->mode_config.mutex, LK_EXCLUSIVE); 445 drm_mode_config_reset(dev); 446 lockmgr(&dev->mode_config.mutex, LK_RELEASE); 447 drm_irq_install(dev); 448 449 lockmgr(&dev->mode_config.mutex, LK_EXCLUSIVE); 450 /* Resume the modeset for every activated CRTC */ 451 drm_helper_resume_force_mode(dev); 452 lockmgr(&dev->mode_config.mutex, LK_RELEASE); 453 454 if (IS_IRONLAKE_M(dev)) 455 ironlake_enable_rc6(dev); 456 DRM_LOCK(dev); 457 } 458 459 intel_opregion_init(dev); 460 461 dev_priv->modeset_on_lid = 0; 462 463 DRM_UNLOCK(dev); 464 465 return error; 466 } 467 468 static int 469 i915_resume(device_t kdev) 470 { 471 struct drm_device *dev; 472 int ret; 473 474 dev = device_get_softc(kdev); 475 DRM_DEBUG_KMS("starting resume\n"); 476 #if 0 477 if (pci_enable_device(dev->pdev)) 478 return -EIO; 479 480 pci_set_master(dev->pdev); 481 #endif 482 483 ret = -i915_drm_thaw(dev); 484 if (ret != 0) 485 return (ret); 486 487 drm_kms_helper_poll_enable(dev); 488 ret = bus_generic_resume(kdev); 489 DRM_DEBUG_KMS("finished resume %d\n", ret); 490 return (ret); 491 } 492 493 static int 494 i915_probe(device_t kdev) 495 { 496 497 return drm_probe(kdev, i915_pciidlist); 498 } 499 500 int i915_modeset; 501 502 static int 503 i915_attach(device_t kdev) 504 { 505 struct drm_device *dev; 506 507 dev = device_get_softc(kdev); 508 if (i915_modeset == 1) 509 i915_driver_info.driver_features |= DRIVER_MODESET; 510 dev->driver = &i915_driver_info; 511 return (drm_attach(kdev, i915_pciidlist)); 512 } 513 514 const struct intel_device_info * 515 i915_get_device_id(int device) 516 { 517 const struct intel_gfx_device_id *did; 518 519 for (did = &pciidlist[0]; did->device != 0; did++) { 520 if (did->device != device) 521 continue; 522 return (did->info); 523 } 524 return (NULL); 525 } 526 527 static device_method_t i915_methods[] = { 528 /* Device interface */ 529 DEVMETHOD(device_probe, i915_probe), 530 DEVMETHOD(device_attach, i915_attach), 531 DEVMETHOD(device_suspend, i915_suspend), 532 DEVMETHOD(device_resume, i915_resume), 533 DEVMETHOD(device_detach, drm_detach), 534 DEVMETHOD_END 535 }; 536 537 static driver_t i915_driver = { 538 "drm", 539 i915_methods, 540 sizeof(struct drm_device) 541 }; 542 543 extern devclass_t drm_devclass; 544 DRIVER_MODULE_ORDERED(i915kms, vgapci, i915_driver, drm_devclass, 0, 0, 545 SI_ORDER_ANY); 546 MODULE_DEPEND(i915kms, drm, 1, 1, 1); 547 MODULE_DEPEND(i915kms, agp, 1, 1, 1); 548 MODULE_DEPEND(i915kms, iicbus, 1, 1, 1); 549 MODULE_DEPEND(i915kms, iic, 1, 1, 1); 550 MODULE_DEPEND(i915kms, iicbb, 1, 1, 1); 551 552 int intel_iommu_enabled = 0; 553 TUNABLE_INT("drm.i915.intel_iommu_enabled", &intel_iommu_enabled); 554 555 int i915_semaphores = -1; 556 TUNABLE_INT("drm.i915.semaphores", &i915_semaphores); 557 static int i915_try_reset = 1; 558 TUNABLE_INT("drm.i915.try_reset", &i915_try_reset); 559 unsigned int i915_lvds_downclock = 0; 560 TUNABLE_INT("drm.i915.lvds_downclock", &i915_lvds_downclock); 561 int i915_vbt_sdvo_panel_type = -1; 562 TUNABLE_INT("drm.i915.vbt_sdvo_panel_type", &i915_vbt_sdvo_panel_type); 563 unsigned int i915_powersave = 1; 564 TUNABLE_INT("drm.i915.powersave", &i915_powersave); 565 int i915_enable_fbc = 0; 566 TUNABLE_INT("drm.i915.enable_fbc", &i915_enable_fbc); 567 int i915_enable_rc6 = 0; 568 TUNABLE_INT("drm.i915.enable_rc6", &i915_enable_rc6); 569 int i915_panel_use_ssc = -1; 570 TUNABLE_INT("drm.i915.panel_use_ssc", &i915_panel_use_ssc); 571 int i915_panel_ignore_lid = 0; 572 TUNABLE_INT("drm.i915.panel_ignore_lid", &i915_panel_ignore_lid); 573 int i915_modeset = 1; 574 TUNABLE_INT("drm.i915.modeset", &i915_modeset); 575 int i915_enable_ppgtt = -1; 576 TUNABLE_INT("drm.i915.enable_ppgtt", &i915_enable_ppgtt); 577 int i915_enable_hangcheck = 1; 578 TUNABLE_INT("drm.i915.enable_hangcheck", &i915_enable_hangcheck); 579 580 static int 581 i8xx_do_reset(struct drm_device *dev, u8 flags) 582 { 583 struct drm_i915_private *dev_priv = dev->dev_private; 584 585 if (IS_I85X(dev)) 586 return -ENODEV; 587 588 I915_WRITE(D_STATE, I915_READ(D_STATE) | DSTATE_GFX_RESET_I830); 589 POSTING_READ(D_STATE); 590 591 if (IS_I830(dev) || IS_845G(dev)) { 592 I915_WRITE(DEBUG_RESET_I830, 593 DEBUG_RESET_DISPLAY | 594 DEBUG_RESET_RENDER | 595 DEBUG_RESET_FULL); 596 POSTING_READ(DEBUG_RESET_I830); 597 DELAY(1000); 598 599 I915_WRITE(DEBUG_RESET_I830, 0); 600 POSTING_READ(DEBUG_RESET_I830); 601 } 602 603 DELAY(1000); 604 605 I915_WRITE(D_STATE, I915_READ(D_STATE) & ~DSTATE_GFX_RESET_I830); 606 POSTING_READ(D_STATE); 607 608 return 0; 609 } 610 611 static int 612 i965_reset_complete(struct drm_device *dev) 613 { 614 u8 gdrst; 615 616 gdrst = pci_read_config(dev->dev, I965_GDRST, 1); 617 return (gdrst & 0x1); 618 } 619 620 static int 621 i965_do_reset(struct drm_device *dev, u8 flags) 622 { 623 u8 gdrst; 624 625 /* 626 * Set the domains we want to reset (GRDOM/bits 2 and 3) as 627 * well as the reset bit (GR/bit 0). Setting the GR bit 628 * triggers the reset; when done, the hardware will clear it. 629 */ 630 gdrst = pci_read_config(dev->dev, I965_GDRST, 1); 631 pci_write_config(dev->dev, I965_GDRST, gdrst | flags | 0x1, 1); 632 633 return (_intel_wait_for(dev, i965_reset_complete(dev), 500, 1, 634 "915rst")); 635 } 636 637 static int 638 ironlake_do_reset(struct drm_device *dev, u8 flags) 639 { 640 struct drm_i915_private *dev_priv; 641 u32 gdrst; 642 643 dev_priv = dev->dev_private; 644 gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); 645 I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, gdrst | flags | 0x1); 646 return (_intel_wait_for(dev, 647 (I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1) != 0, 648 500, 1, "915rst")); 649 } 650 651 static int gen6_do_reset(struct drm_device *dev) 652 { 653 struct drm_i915_private *dev_priv = dev->dev_private; 654 int ret; 655 656 dev_priv = dev->dev_private; 657 658 /* Hold gt_lock across reset to prevent any register access 659 * with forcewake not set correctly 660 */ 661 lockmgr(&dev_priv->gt_lock, LK_EXCLUSIVE); 662 663 /* Reset the chip */ 664 665 /* GEN6_GDRST is not in the gt power well, no need to check 666 * for fifo space for the write or forcewake the chip for 667 * the read 668 */ 669 I915_WRITE_NOTRACE(GEN6_GDRST, GEN6_GRDOM_FULL); 670 671 /* Spin waiting for the device to ack the reset request */ 672 ret = _intel_wait_for(dev, 673 (I915_READ(GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 674 500, 1, "915rst"); 675 676 /* If reset with a user forcewake, try to restore, otherwise turn it off */ 677 if (dev_priv->forcewake_count) 678 dev_priv->gt.force_wake_get(dev_priv); 679 else 680 dev_priv->gt.force_wake_put(dev_priv); 681 682 /* Restore fifo count */ 683 dev_priv->gt_fifo_count = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); 684 685 lockmgr(&dev_priv->gt_lock, LK_RELEASE); 686 return ret; 687 } 688 689 /** 690 * i915_reset - reset chip after a hang 691 * @dev: drm device to reset 692 * 693 * Reset the chip. Useful if a hang is detected. Returns zero on successful 694 * reset or otherwise an error code. 695 * 696 * Procedure is fairly simple: 697 * - reset the chip using the reset reg 698 * - re-init context state 699 * - re-init hardware status page 700 * - re-init ring buffer 701 * - re-init interrupt state 702 * - re-init display 703 */ 704 int 705 i915_reset(struct drm_device *dev, u8 flags) 706 { 707 drm_i915_private_t *dev_priv = dev->dev_private; 708 int ret; 709 710 if (!i915_try_reset) 711 return 0; 712 713 /* 714 * We really should only reset the display subsystem if we actually 715 * need to 716 */ 717 bool need_display = true; 718 719 if (lockmgr(&dev->dev_struct_lock, LK_EXCLUSIVE|LK_NOWAIT)) 720 return (-EBUSY); 721 722 i915_gem_reset(dev); 723 724 ret = -ENODEV; 725 if (time_uptime - dev_priv->last_gpu_reset < 5) { 726 DRM_ERROR("GPU hanging too fast, declaring wedged!\n"); 727 } else { 728 switch (INTEL_INFO(dev)->gen) { 729 case 7: 730 case 6: 731 ret = gen6_do_reset(dev); 732 break; 733 case 5: 734 ret = ironlake_do_reset(dev, flags); 735 break; 736 case 4: 737 ret = i965_do_reset(dev, flags); 738 break; 739 case 2: 740 ret = i8xx_do_reset(dev, flags); 741 break; 742 } 743 } 744 dev_priv->last_gpu_reset = time_uptime; 745 if (ret) { 746 DRM_ERROR("Failed to reset chip.\n"); 747 DRM_UNLOCK(dev); 748 return (ret); 749 } 750 751 /* Ok, now get things going again... */ 752 753 /* 754 * Everything depends on having the GTT running, so we need to start 755 * there. Fortunately we don't need to do this unless we reset the 756 * chip at a PCI level. 757 * 758 * Next we need to restore the context, but we don't use those 759 * yet either... 760 * 761 * Ring buffer needs to be re-initialized in the KMS case, or if X 762 * was running at the time of the reset (i.e. we weren't VT 763 * switched away). 764 */ 765 if (drm_core_check_feature(dev, DRIVER_MODESET) || 766 !dev_priv->mm.suspended) { 767 dev_priv->mm.suspended = 0; 768 769 i915_gem_init_swizzling(dev); 770 771 dev_priv->ring[RCS].init(&dev_priv->ring[RCS]); 772 if (HAS_BSD(dev)) 773 dev_priv->ring[VCS].init(&dev_priv->ring[VCS]); 774 if (HAS_BLT(dev)) 775 dev_priv->ring[BCS].init(&dev_priv->ring[BCS]); 776 777 i915_gem_init_ppgtt(dev); 778 779 drm_irq_uninstall(dev); 780 drm_mode_config_reset(dev); 781 DRM_UNLOCK(dev); 782 drm_irq_install(dev); 783 DRM_LOCK(dev); 784 } 785 DRM_UNLOCK(dev); 786 787 if (need_display) { 788 lockmgr(&dev->mode_config.mutex, LK_EXCLUSIVE); 789 drm_helper_resume_force_mode(dev); 790 lockmgr(&dev->mode_config.mutex, LK_RELEASE); 791 } 792 793 return 0; 794 } 795 796 static bool IS_DISPLAYREG(u32 reg) 797 { 798 /* 799 * This should make it easier to transition modules over to the 800 * new register block scheme, since we can do it incrementally. 801 */ 802 if (reg >= VLV_DISPLAY_BASE) 803 return false; 804 805 if (reg >= RENDER_RING_BASE && 806 reg < RENDER_RING_BASE + 0xff) 807 return false; 808 if (reg >= GEN6_BSD_RING_BASE && 809 reg < GEN6_BSD_RING_BASE + 0xff) 810 return false; 811 if (reg >= BLT_RING_BASE && 812 reg < BLT_RING_BASE + 0xff) 813 return false; 814 815 if (reg == PGTBL_ER) 816 return false; 817 818 if (reg >= IPEIR_I965 && 819 reg < HWSTAM) 820 return false; 821 822 if (reg == MI_MODE) 823 return false; 824 825 if (reg == GFX_MODE_GEN7) 826 return false; 827 828 if (reg == RENDER_HWS_PGA_GEN7 || 829 reg == BSD_HWS_PGA_GEN7 || 830 reg == BLT_HWS_PGA_GEN7) 831 return false; 832 833 if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL || 834 reg == GEN6_BSD_RNCID) 835 return false; 836 837 if (reg == GEN6_BLITTER_ECOSKPD) 838 return false; 839 840 if (reg >= 0x4000c && 841 reg <= 0x4002c) 842 return false; 843 844 if (reg >= 0x4f000 && 845 reg <= 0x4f08f) 846 return false; 847 848 if (reg >= 0x4f100 && 849 reg <= 0x4f11f) 850 return false; 851 852 if (reg >= VLV_MASTER_IER && 853 reg <= GEN6_PMIER) 854 return false; 855 856 if (reg >= FENCE_REG_SANDYBRIDGE_0 && 857 reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8))) 858 return false; 859 860 if (reg >= VLV_IIR_RW && 861 reg <= VLV_ISR) 862 return false; 863 864 if (reg == FORCEWAKE_VLV || 865 reg == FORCEWAKE_ACK_VLV) 866 return false; 867 868 if (reg == GEN6_GDRST) 869 return false; 870 871 switch (reg) { 872 case _3D_CHICKEN3: 873 case IVB_CHICKEN3: 874 case GEN7_COMMON_SLICE_CHICKEN1: 875 case GEN7_L3CNTLREG1: 876 case GEN7_L3_CHICKEN_MODE_REGISTER: 877 case GEN7_ROW_CHICKEN2: 878 case GEN7_L3SQCREG4: 879 case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG: 880 case GEN7_HALF_SLICE_CHICKEN1: 881 case GEN6_MBCTL: 882 case GEN6_UCGCTL2: 883 return false; 884 default: 885 break; 886 } 887 888 return true; 889 } 890 891 static void 892 ilk_dummy_write(struct drm_i915_private *dev_priv) 893 { 894 /* WaIssueDummyWriteToWakeupFromRC6: Issue a dummy write to wake up the 895 * chip from rc6 before touching it for real. MI_MODE is masked, hence 896 * harmless to write 0 into. */ 897 I915_WRITE_NOTRACE(MI_MODE, 0); 898 } 899 900 #define __i915_read(x, y) \ 901 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \ 902 u##x val = 0; \ 903 if (IS_GEN5(dev_priv->dev)) \ 904 ilk_dummy_write(dev_priv); \ 905 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 906 lockmgr(&dev_priv->gt_lock, LK_EXCLUSIVE); \ 907 if (dev_priv->forcewake_count == 0) \ 908 dev_priv->gt.force_wake_get(dev_priv); \ 909 val = DRM_READ##y(dev_priv->mmio_map, reg); \ 910 if (dev_priv->forcewake_count == 0) \ 911 dev_priv->gt.force_wake_put(dev_priv); \ 912 lockmgr(&dev_priv->gt_lock, LK_RELEASE); \ 913 } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 914 val = DRM_READ##y(dev_priv->mmio_map, reg + 0x180000); \ 915 } else { \ 916 val = DRM_READ##y(dev_priv->mmio_map, reg); \ 917 } \ 918 trace_i915_reg_rw(false, reg, val, sizeof(val)); \ 919 return val; \ 920 } 921 922 __i915_read(8, 8) 923 __i915_read(16, 16) 924 __i915_read(32, 32) 925 __i915_read(64, 64) 926 #undef __i915_read 927 928 #define __i915_write(x, y) \ 929 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \ 930 u32 __fifo_ret = 0; \ 931 trace_i915_reg_rw(true, reg, val, sizeof(val)); \ 932 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 933 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ 934 } \ 935 if (IS_GEN5(dev_priv->dev)) \ 936 ilk_dummy_write(dev_priv); \ 937 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 938 DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \ 939 I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ 940 } \ 941 if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 942 DRM_WRITE##y(dev_priv->mmio_map, reg + 0x180000, val); \ 943 } else { \ 944 DRM_WRITE##y(dev_priv->mmio_map, reg, val); \ 945 } \ 946 if (unlikely(__fifo_ret)) { \ 947 gen6_gt_check_fifodbg(dev_priv); \ 948 } \ 949 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 950 DRM_ERROR("Unclaimed write to %x\n", reg); \ 951 DRM_WRITE32(dev_priv->mmio_map, GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ 952 } \ 953 } 954 955 __i915_write(8, 8) 956 __i915_write(16, 16) 957 __i915_write(32, 32) 958 __i915_write(64, 64) 959 #undef __i915_write 960