i915_drv.c revision 1.2.4.2
1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- 2 */ 3 /* 4 * 5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 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 10 * "Software"), to deal in the Software without restriction, including 11 * without limitation the rights to use, copy, modify, merge, publish, 12 * distribute, sub license, and/or sell copies of the Software, and to 13 * permit persons to whom the Software is furnished to do so, subject to 14 * the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial portions 18 * of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 23 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 */ 29 30 #include <linux/device.h> 31 #include <linux/moduleparam.h> 32 #include <linux/time.h> 33 #include <drm/drmP.h> 34 #include <drm/i915_drm.h> 35 #include "i915_drv.h" 36 #include "i915_trace.h" 37 #include "intel_drv.h" 38 39 #include <linux/console.h> 40 #include <linux/module.h> 41 #include <drm/drm_crtc_helper.h> 42 43 #ifndef __NetBSD__ /* XXX Use i915_modeset somewhere. */ 44 static int i915_modeset __read_mostly = -1; 45 module_param_named(modeset, i915_modeset, int, 0400); 46 MODULE_PARM_DESC(modeset, 47 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, " 48 "1=on, -1=force vga console preference [default])"); 49 #endif 50 51 unsigned int i915_fbpercrtc __always_unused = 0; 52 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400); 53 54 int i915_panel_ignore_lid __read_mostly = 1; 55 module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600); 56 MODULE_PARM_DESC(panel_ignore_lid, 57 "Override lid status (0=autodetect, 1=autodetect disabled [default], " 58 "-1=force lid closed, -2=force lid open)"); 59 60 unsigned int i915_powersave __read_mostly = 1; 61 module_param_named(powersave, i915_powersave, int, 0600); 62 MODULE_PARM_DESC(powersave, 63 "Enable powersavings, fbc, downclocking, etc. (default: true)"); 64 65 int i915_semaphores __read_mostly = -1; 66 module_param_named(semaphores, i915_semaphores, int, 0600); 67 MODULE_PARM_DESC(semaphores, 68 "Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))"); 69 70 int i915_enable_rc6 __read_mostly = -1; 71 module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0400); 72 MODULE_PARM_DESC(i915_enable_rc6, 73 "Enable power-saving render C-state 6. " 74 "Different stages can be selected via bitmask values " 75 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " 76 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " 77 "default: -1 (use per-chip default)"); 78 79 int i915_enable_fbc __read_mostly = -1; 80 module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600); 81 MODULE_PARM_DESC(i915_enable_fbc, 82 "Enable frame buffer compression for power savings " 83 "(default: -1 (use per-chip default))"); 84 85 unsigned int i915_lvds_downclock __read_mostly = 0; 86 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400); 87 MODULE_PARM_DESC(lvds_downclock, 88 "Use panel (LVDS/eDP) downclocking for power savings " 89 "(default: false)"); 90 91 int i915_lvds_channel_mode __read_mostly; 92 module_param_named(lvds_channel_mode, i915_lvds_channel_mode, int, 0600); 93 MODULE_PARM_DESC(lvds_channel_mode, 94 "Specify LVDS channel mode " 95 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); 96 97 int i915_panel_use_ssc __read_mostly = -1; 98 module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600); 99 MODULE_PARM_DESC(lvds_use_ssc, 100 "Use Spread Spectrum Clock with panels [LVDS/eDP] " 101 "(default: auto from VBT)"); 102 103 int i915_vbt_sdvo_panel_type __read_mostly = -1; 104 module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600); 105 MODULE_PARM_DESC(vbt_sdvo_panel_type, 106 "Override/Ignore selection of SDVO panel mode in the VBT " 107 "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); 108 109 static bool i915_try_reset __read_mostly = true; 110 module_param_named(reset, i915_try_reset, bool, 0600); 111 MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); 112 113 bool i915_enable_hangcheck __read_mostly = true; 114 module_param_named(enable_hangcheck, i915_enable_hangcheck, bool, 0644); 115 MODULE_PARM_DESC(enable_hangcheck, 116 "Periodically check GPU activity for detecting hangs. " 117 "WARNING: Disabling this can cause system wide hangs. " 118 "(default: true)"); 119 120 int i915_enable_ppgtt __read_mostly = -1; 121 module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, int, 0600); 122 MODULE_PARM_DESC(i915_enable_ppgtt, 123 "Enable PPGTT (default: true)"); 124 125 unsigned int i915_preliminary_hw_support __read_mostly = 0; 126 module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600); 127 MODULE_PARM_DESC(preliminary_hw_support, 128 "Enable preliminary hardware support. " 129 "Enable Haswell and ValleyView Support. " 130 "(default: false)"); 131 132 static struct drm_driver driver; 133 extern int intel_agp_enabled; 134 135 #ifdef __NetBSD__ 136 /* XXX Kludge to expose this to NetBSD driver attachment goop. */ 137 struct drm_driver *const i915_drm_driver = &driver; 138 #endif 139 140 #define INTEL_VGA_DEVICE(id, info) { \ 141 .class = PCI_BASE_CLASS_DISPLAY << 16, \ 142 .class_mask = 0xff0000, \ 143 .vendor = 0x8086, \ 144 .device = id, \ 145 .subvendor = PCI_ANY_ID, \ 146 .subdevice = PCI_ANY_ID, \ 147 .driver_data = (unsigned long) info } 148 149 static const struct intel_device_info intel_i830_info = { 150 .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, 151 .has_overlay = 1, .overlay_needs_physical = 1, 152 }; 153 154 static const struct intel_device_info intel_845g_info = { 155 .gen = 2, 156 .has_overlay = 1, .overlay_needs_physical = 1, 157 }; 158 159 static const struct intel_device_info intel_i85x_info = { 160 .gen = 2, .is_i85x = 1, .is_mobile = 1, 161 .cursor_needs_physical = 1, 162 .has_overlay = 1, .overlay_needs_physical = 1, 163 }; 164 165 static const struct intel_device_info intel_i865g_info = { 166 .gen = 2, 167 .has_overlay = 1, .overlay_needs_physical = 1, 168 }; 169 170 static const struct intel_device_info intel_i915g_info = { 171 .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, 172 .has_overlay = 1, .overlay_needs_physical = 1, 173 }; 174 static const struct intel_device_info intel_i915gm_info = { 175 .gen = 3, .is_mobile = 1, 176 .cursor_needs_physical = 1, 177 .has_overlay = 1, .overlay_needs_physical = 1, 178 .supports_tv = 1, 179 }; 180 static const struct intel_device_info intel_i945g_info = { 181 .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, 182 .has_overlay = 1, .overlay_needs_physical = 1, 183 }; 184 static const struct intel_device_info intel_i945gm_info = { 185 .gen = 3, .is_i945gm = 1, .is_mobile = 1, 186 .has_hotplug = 1, .cursor_needs_physical = 1, 187 .has_overlay = 1, .overlay_needs_physical = 1, 188 .supports_tv = 1, 189 }; 190 191 static const struct intel_device_info intel_i965g_info = { 192 .gen = 4, .is_broadwater = 1, 193 .has_hotplug = 1, 194 .has_overlay = 1, 195 }; 196 197 static const struct intel_device_info intel_i965gm_info = { 198 .gen = 4, .is_crestline = 1, 199 .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1, 200 .has_overlay = 1, 201 .supports_tv = 1, 202 }; 203 204 static const struct intel_device_info intel_g33_info = { 205 .gen = 3, .is_g33 = 1, 206 .need_gfx_hws = 1, .has_hotplug = 1, 207 .has_overlay = 1, 208 }; 209 210 static const struct intel_device_info intel_g45_info = { 211 .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, 212 .has_pipe_cxsr = 1, .has_hotplug = 1, 213 .has_bsd_ring = 1, 214 }; 215 216 static const struct intel_device_info intel_gm45_info = { 217 .gen = 4, .is_g4x = 1, 218 .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, 219 .has_pipe_cxsr = 1, .has_hotplug = 1, 220 .supports_tv = 1, 221 .has_bsd_ring = 1, 222 }; 223 224 static const struct intel_device_info intel_pineview_info = { 225 .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, 226 .need_gfx_hws = 1, .has_hotplug = 1, 227 .has_overlay = 1, 228 }; 229 230 static const struct intel_device_info intel_ironlake_d_info = { 231 .gen = 5, 232 .need_gfx_hws = 1, .has_hotplug = 1, 233 .has_bsd_ring = 1, 234 }; 235 236 static const struct intel_device_info intel_ironlake_m_info = { 237 .gen = 5, .is_mobile = 1, 238 .need_gfx_hws = 1, .has_hotplug = 1, 239 .has_fbc = 1, 240 .has_bsd_ring = 1, 241 }; 242 243 static const struct intel_device_info intel_sandybridge_d_info = { 244 .gen = 6, 245 .need_gfx_hws = 1, .has_hotplug = 1, 246 .has_bsd_ring = 1, 247 .has_blt_ring = 1, 248 .has_llc = 1, 249 .has_force_wake = 1, 250 }; 251 252 static const struct intel_device_info intel_sandybridge_m_info = { 253 .gen = 6, .is_mobile = 1, 254 .need_gfx_hws = 1, .has_hotplug = 1, 255 .has_fbc = 1, 256 .has_bsd_ring = 1, 257 .has_blt_ring = 1, 258 .has_llc = 1, 259 .has_force_wake = 1, 260 }; 261 262 static const struct intel_device_info intel_ivybridge_d_info = { 263 .is_ivybridge = 1, .gen = 7, 264 .need_gfx_hws = 1, .has_hotplug = 1, 265 .has_bsd_ring = 1, 266 .has_blt_ring = 1, 267 .has_llc = 1, 268 .has_force_wake = 1, 269 }; 270 271 static const struct intel_device_info intel_ivybridge_m_info = { 272 .is_ivybridge = 1, .gen = 7, .is_mobile = 1, 273 .need_gfx_hws = 1, .has_hotplug = 1, 274 .has_fbc = 0, /* FBC is not enabled on Ivybridge mobile yet */ 275 .has_bsd_ring = 1, 276 .has_blt_ring = 1, 277 .has_llc = 1, 278 .has_force_wake = 1, 279 }; 280 281 static const struct intel_device_info intel_valleyview_m_info = { 282 .gen = 7, .is_mobile = 1, 283 .need_gfx_hws = 1, .has_hotplug = 1, 284 .has_fbc = 0, 285 .has_bsd_ring = 1, 286 .has_blt_ring = 1, 287 .is_valleyview = 1, 288 }; 289 290 static const struct intel_device_info intel_valleyview_d_info = { 291 .gen = 7, 292 .need_gfx_hws = 1, .has_hotplug = 1, 293 .has_fbc = 0, 294 .has_bsd_ring = 1, 295 .has_blt_ring = 1, 296 .is_valleyview = 1, 297 }; 298 299 static const struct intel_device_info intel_haswell_d_info = { 300 .is_haswell = 1, .gen = 7, 301 .need_gfx_hws = 1, .has_hotplug = 1, 302 .has_bsd_ring = 1, 303 .has_blt_ring = 1, 304 .has_llc = 1, 305 .has_force_wake = 1, 306 }; 307 308 static const struct intel_device_info intel_haswell_m_info = { 309 .is_haswell = 1, .gen = 7, .is_mobile = 1, 310 .need_gfx_hws = 1, .has_hotplug = 1, 311 .has_bsd_ring = 1, 312 .has_blt_ring = 1, 313 .has_llc = 1, 314 .has_force_wake = 1, 315 }; 316 317 static const struct pci_device_id pciidlist[] = { /* aka */ 318 INTEL_VGA_DEVICE(0x3577, &intel_i830_info), /* I830_M */ 319 INTEL_VGA_DEVICE(0x2562, &intel_845g_info), /* 845_G */ 320 INTEL_VGA_DEVICE(0x3582, &intel_i85x_info), /* I855_GM */ 321 INTEL_VGA_DEVICE(0x358e, &intel_i85x_info), 322 INTEL_VGA_DEVICE(0x2572, &intel_i865g_info), /* I865_G */ 323 INTEL_VGA_DEVICE(0x2582, &intel_i915g_info), /* I915_G */ 324 INTEL_VGA_DEVICE(0x258a, &intel_i915g_info), /* E7221_G */ 325 INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info), /* I915_GM */ 326 INTEL_VGA_DEVICE(0x2772, &intel_i945g_info), /* I945_G */ 327 INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info), /* I945_GM */ 328 INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info), /* I945_GME */ 329 INTEL_VGA_DEVICE(0x2972, &intel_i965g_info), /* I946_GZ */ 330 INTEL_VGA_DEVICE(0x2982, &intel_i965g_info), /* G35_G */ 331 INTEL_VGA_DEVICE(0x2992, &intel_i965g_info), /* I965_Q */ 332 INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info), /* I965_G */ 333 INTEL_VGA_DEVICE(0x29b2, &intel_g33_info), /* Q35_G */ 334 INTEL_VGA_DEVICE(0x29c2, &intel_g33_info), /* G33_G */ 335 INTEL_VGA_DEVICE(0x29d2, &intel_g33_info), /* Q33_G */ 336 INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info), /* I965_GM */ 337 INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info), /* I965_GME */ 338 INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info), /* GM45_G */ 339 INTEL_VGA_DEVICE(0x2e02, &intel_g45_info), /* IGD_E_G */ 340 INTEL_VGA_DEVICE(0x2e12, &intel_g45_info), /* Q45_G */ 341 INTEL_VGA_DEVICE(0x2e22, &intel_g45_info), /* G45_G */ 342 INTEL_VGA_DEVICE(0x2e32, &intel_g45_info), /* G41_G */ 343 INTEL_VGA_DEVICE(0x2e42, &intel_g45_info), /* B43_G */ 344 INTEL_VGA_DEVICE(0x2e92, &intel_g45_info), /* B43_G.1 */ 345 INTEL_VGA_DEVICE(0xa001, &intel_pineview_info), 346 INTEL_VGA_DEVICE(0xa011, &intel_pineview_info), 347 INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info), 348 INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info), 349 INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info), 350 INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info), 351 INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info), 352 INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info), 353 INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info), 354 INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info), 355 INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info), 356 INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info), /* GT1 mobile */ 357 INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info), /* GT2 mobile */ 358 INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info), /* GT1 desktop */ 359 INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info), /* GT2 desktop */ 360 INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info), /* GT1 server */ 361 INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info), /* GT2 server */ 362 INTEL_VGA_DEVICE(0x0402, &intel_haswell_d_info), /* GT1 desktop */ 363 INTEL_VGA_DEVICE(0x0412, &intel_haswell_d_info), /* GT2 desktop */ 364 INTEL_VGA_DEVICE(0x0422, &intel_haswell_d_info), /* GT2 desktop */ 365 INTEL_VGA_DEVICE(0x040a, &intel_haswell_d_info), /* GT1 server */ 366 INTEL_VGA_DEVICE(0x041a, &intel_haswell_d_info), /* GT2 server */ 367 INTEL_VGA_DEVICE(0x042a, &intel_haswell_d_info), /* GT2 server */ 368 INTEL_VGA_DEVICE(0x0406, &intel_haswell_m_info), /* GT1 mobile */ 369 INTEL_VGA_DEVICE(0x0416, &intel_haswell_m_info), /* GT2 mobile */ 370 INTEL_VGA_DEVICE(0x0426, &intel_haswell_m_info), /* GT2 mobile */ 371 INTEL_VGA_DEVICE(0x0C02, &intel_haswell_d_info), /* SDV GT1 desktop */ 372 INTEL_VGA_DEVICE(0x0C12, &intel_haswell_d_info), /* SDV GT2 desktop */ 373 INTEL_VGA_DEVICE(0x0C22, &intel_haswell_d_info), /* SDV GT2 desktop */ 374 INTEL_VGA_DEVICE(0x0C0A, &intel_haswell_d_info), /* SDV GT1 server */ 375 INTEL_VGA_DEVICE(0x0C1A, &intel_haswell_d_info), /* SDV GT2 server */ 376 INTEL_VGA_DEVICE(0x0C2A, &intel_haswell_d_info), /* SDV GT2 server */ 377 INTEL_VGA_DEVICE(0x0C06, &intel_haswell_m_info), /* SDV GT1 mobile */ 378 INTEL_VGA_DEVICE(0x0C16, &intel_haswell_m_info), /* SDV GT2 mobile */ 379 INTEL_VGA_DEVICE(0x0C26, &intel_haswell_m_info), /* SDV GT2 mobile */ 380 INTEL_VGA_DEVICE(0x0A02, &intel_haswell_d_info), /* ULT GT1 desktop */ 381 INTEL_VGA_DEVICE(0x0A12, &intel_haswell_d_info), /* ULT GT2 desktop */ 382 INTEL_VGA_DEVICE(0x0A22, &intel_haswell_d_info), /* ULT GT2 desktop */ 383 INTEL_VGA_DEVICE(0x0A0A, &intel_haswell_d_info), /* ULT GT1 server */ 384 INTEL_VGA_DEVICE(0x0A1A, &intel_haswell_d_info), /* ULT GT2 server */ 385 INTEL_VGA_DEVICE(0x0A2A, &intel_haswell_d_info), /* ULT GT2 server */ 386 INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info), /* ULT GT1 mobile */ 387 INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info), /* ULT GT2 mobile */ 388 INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info), /* ULT GT2 mobile */ 389 INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT1 desktop */ 390 INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info), /* CRW GT2 desktop */ 391 INTEL_VGA_DEVICE(0x0D32, &intel_haswell_d_info), /* CRW GT2 desktop */ 392 INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT1 server */ 393 INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info), /* CRW GT2 server */ 394 INTEL_VGA_DEVICE(0x0D3A, &intel_haswell_d_info), /* CRW GT2 server */ 395 INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT1 mobile */ 396 INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info), /* CRW GT2 mobile */ 397 INTEL_VGA_DEVICE(0x0D36, &intel_haswell_m_info), /* CRW GT2 mobile */ 398 INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info), 399 INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info), 400 INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info), 401 #ifdef __NetBSD__ 402 {0, 0, 0, 0, 0, 0, 0} 403 #else 404 {0, 0, 0} 405 #endif 406 }; 407 408 #if defined(CONFIG_DRM_I915_KMS) 409 MODULE_DEVICE_TABLE(pci, pciidlist); 410 #endif 411 412 #ifdef __NetBSD__ 413 /* XXX Kludge to expose this to NetBSD driver attachment goop. */ 414 const struct pci_device_id *const i915_device_ids = pciidlist; 415 const size_t i915_n_device_ids = __arraycount(pciidlist); 416 #endif 417 418 void intel_detect_pch(struct drm_device *dev) 419 { 420 struct drm_i915_private *dev_priv = dev->dev_private; 421 struct pci_dev *pch; 422 423 /* 424 * The reason to probe ISA bridge instead of Dev31:Fun0 is to 425 * make graphics device passthrough work easy for VMM, that only 426 * need to expose ISA bridge to let driver know the real hardware 427 * underneath. This is a requirement from virtualization team. 428 */ 429 pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); 430 if (pch) { 431 if (pch->vendor == PCI_VENDOR_ID_INTEL) { 432 unsigned short id; 433 id = pch->device & INTEL_PCH_DEVICE_ID_MASK; 434 dev_priv->pch_id = id; 435 436 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) { 437 dev_priv->pch_type = PCH_IBX; 438 dev_priv->num_pch_pll = 2; 439 DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); 440 WARN_ON(!IS_GEN5(dev)); 441 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { 442 dev_priv->pch_type = PCH_CPT; 443 dev_priv->num_pch_pll = 2; 444 DRM_DEBUG_KMS("Found CougarPoint PCH\n"); 445 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); 446 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) { 447 /* PantherPoint is CPT compatible */ 448 dev_priv->pch_type = PCH_CPT; 449 dev_priv->num_pch_pll = 2; 450 DRM_DEBUG_KMS("Found PatherPoint PCH\n"); 451 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); 452 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { 453 dev_priv->pch_type = PCH_LPT; 454 dev_priv->num_pch_pll = 0; 455 DRM_DEBUG_KMS("Found LynxPoint PCH\n"); 456 WARN_ON(!IS_HASWELL(dev)); 457 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { 458 dev_priv->pch_type = PCH_LPT; 459 dev_priv->num_pch_pll = 0; 460 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); 461 WARN_ON(!IS_HASWELL(dev)); 462 } 463 BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS); 464 } 465 pci_dev_put(pch); 466 } 467 } 468 469 bool i915_semaphore_is_enabled(struct drm_device *dev) 470 { 471 if (INTEL_INFO(dev)->gen < 6) 472 return 0; 473 474 if (i915_semaphores >= 0) 475 return i915_semaphores; 476 477 #ifdef CONFIG_INTEL_IOMMU 478 /* Enable semaphores on SNB when IO remapping is off */ 479 if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) 480 return false; 481 #endif 482 483 return 1; 484 } 485 486 static int i915_drm_freeze(struct drm_device *dev) 487 { 488 struct drm_i915_private *dev_priv = dev->dev_private; 489 490 drm_kms_helper_poll_disable(dev); 491 492 #ifndef __NetBSD__ /* pmf handles this for us. */ 493 pci_save_state(dev->pdev); 494 #endif 495 496 /* If KMS is active, we do the leavevt stuff here */ 497 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 498 int error = i915_gem_idle(dev); 499 if (error) { 500 #ifdef __NetBSD__ 501 dev_err(pci_dev_dev(dev->pdev), 502 "GEM idle failed, resume might fail\n"); 503 #else 504 dev_err(&dev->pdev->dev, 505 "GEM idle failed, resume might fail\n"); 506 #endif 507 return error; 508 } 509 510 cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); 511 512 intel_modeset_disable(dev); 513 514 drm_irq_uninstall(dev); 515 } 516 517 i915_save_state(dev); 518 519 intel_opregion_fini(dev); 520 521 /* Modeset on resume, not lid events */ 522 dev_priv->modeset_on_lid = 0; 523 524 #ifndef __NetBSD__ /* XXX fb */ 525 console_lock(); 526 intel_fbdev_set_suspend(dev, 1); 527 console_unlock(); 528 #endif 529 530 return 0; 531 } 532 533 int i915_suspend(struct drm_device *dev, pm_message_t state) 534 { 535 int error; 536 537 if (!dev || !dev->dev_private) { 538 DRM_ERROR("dev: %p\n", dev); 539 DRM_ERROR("DRM not initialized, aborting suspend.\n"); 540 return -ENODEV; 541 } 542 543 if (state.event == PM_EVENT_PRETHAW) 544 return 0; 545 546 547 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) 548 return 0; 549 550 error = i915_drm_freeze(dev); 551 if (error) 552 return error; 553 554 #ifndef __NetBSD__ /* pmf handles this for us. */ 555 if (state.event == PM_EVENT_SUSPEND) { 556 /* Shut down the device */ 557 pci_disable_device(dev->pdev); 558 pci_set_power_state(dev->pdev, PCI_D3hot); 559 } 560 #endif 561 562 return 0; 563 } 564 565 void intel_console_resume(struct work_struct *work) 566 { 567 #ifndef __NetBSD__ /* XXX fb */ 568 struct drm_i915_private *dev_priv = 569 container_of(work, struct drm_i915_private, 570 console_resume_work); 571 struct drm_device *dev = dev_priv->dev; 572 573 console_lock(); 574 intel_fbdev_set_suspend(dev, 0); 575 console_unlock(); 576 #endif 577 } 578 579 static int __i915_drm_thaw(struct drm_device *dev) 580 { 581 struct drm_i915_private *dev_priv = dev->dev_private; 582 int error = 0; 583 584 i915_restore_state(dev); 585 intel_opregion_setup(dev); 586 587 /* KMS EnterVT equivalent */ 588 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 589 intel_init_pch_refclk(dev); 590 591 mutex_lock(&dev->struct_mutex); 592 dev_priv->mm.suspended = 0; 593 594 error = i915_gem_init_hw(dev); 595 mutex_unlock(&dev->struct_mutex); 596 597 intel_modeset_init_hw(dev); 598 intel_modeset_setup_hw_state(dev, false); 599 drm_irq_install(dev); 600 } 601 602 intel_opregion_init(dev); 603 604 dev_priv->modeset_on_lid = 0; 605 606 #ifndef __NetBSD__ /* XXX fb */ 607 /* 608 * The console lock can be pretty contented on resume due 609 * to all the printk activity. Try to keep it out of the hot 610 * path of resume if possible. 611 */ 612 if (console_trylock()) { 613 intel_fbdev_set_suspend(dev, 0); 614 console_unlock(); 615 } else { 616 schedule_work(&dev_priv->console_resume_work); 617 } 618 #endif 619 620 return error; 621 } 622 623 #ifndef __NetBSD__ /* XXX freeze/thaw */ 624 static int i915_drm_thaw(struct drm_device *dev) 625 { 626 int error = 0; 627 628 intel_gt_reset(dev); 629 630 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 631 mutex_lock(&dev->struct_mutex); 632 i915_gem_restore_gtt_mappings(dev); 633 mutex_unlock(&dev->struct_mutex); 634 } 635 636 __i915_drm_thaw(dev); 637 638 return error; 639 } 640 #endif 641 642 int i915_resume(struct drm_device *dev) 643 { 644 struct drm_i915_private *dev_priv = dev->dev_private; 645 int ret; 646 647 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) 648 return 0; 649 650 #ifndef __NetBSD__ /* pmf handles this for us. */ 651 if (pci_enable_device(dev->pdev)) 652 return -EIO; 653 #endif 654 655 pci_set_master(dev->pdev); 656 657 intel_gt_reset(dev); 658 659 /* 660 * Platforms with opregion should have sane BIOS, older ones (gen3 and 661 * earlier) need this since the BIOS might clear all our scratch PTEs. 662 */ 663 if (drm_core_check_feature(dev, DRIVER_MODESET) && 664 !dev_priv->opregion.header) { 665 mutex_lock(&dev->struct_mutex); 666 i915_gem_restore_gtt_mappings(dev); 667 mutex_unlock(&dev->struct_mutex); 668 } 669 670 ret = __i915_drm_thaw(dev); 671 if (ret) 672 return ret; 673 674 drm_kms_helper_poll_enable(dev); 675 return 0; 676 } 677 678 static int i8xx_do_reset(struct drm_device *dev) 679 { 680 struct drm_i915_private *dev_priv = dev->dev_private; 681 682 if (IS_I85X(dev)) 683 return -ENODEV; 684 685 I915_WRITE(D_STATE, I915_READ(D_STATE) | DSTATE_GFX_RESET_I830); 686 POSTING_READ(D_STATE); 687 688 if (IS_I830(dev) || IS_845G(dev)) { 689 I915_WRITE(DEBUG_RESET_I830, 690 DEBUG_RESET_DISPLAY | 691 DEBUG_RESET_RENDER | 692 DEBUG_RESET_FULL); 693 POSTING_READ(DEBUG_RESET_I830); 694 msleep(1); 695 696 I915_WRITE(DEBUG_RESET_I830, 0); 697 POSTING_READ(DEBUG_RESET_I830); 698 } 699 700 msleep(1); 701 702 I915_WRITE(D_STATE, I915_READ(D_STATE) & ~DSTATE_GFX_RESET_I830); 703 POSTING_READ(D_STATE); 704 705 return 0; 706 } 707 708 static int i965_reset_complete(struct drm_device *dev) 709 { 710 u8 gdrst; 711 pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); 712 return (gdrst & GRDOM_RESET_ENABLE) == 0; 713 } 714 715 static int i965_do_reset(struct drm_device *dev) 716 { 717 int ret; 718 u8 gdrst; 719 720 /* 721 * Set the domains we want to reset (GRDOM/bits 2 and 3) as 722 * well as the reset bit (GR/bit 0). Setting the GR bit 723 * triggers the reset; when done, the hardware will clear it. 724 */ 725 pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); 726 pci_write_config_byte(dev->pdev, I965_GDRST, 727 gdrst | GRDOM_RENDER | 728 GRDOM_RESET_ENABLE); 729 ret = wait_for(i965_reset_complete(dev), 500); 730 if (ret) 731 return ret; 732 733 /* We can't reset render&media without also resetting display ... */ 734 pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); 735 pci_write_config_byte(dev->pdev, I965_GDRST, 736 gdrst | GRDOM_MEDIA | 737 GRDOM_RESET_ENABLE); 738 739 return wait_for(i965_reset_complete(dev), 500); 740 } 741 742 static int ironlake_do_reset(struct drm_device *dev) 743 { 744 struct drm_i915_private *dev_priv = dev->dev_private; 745 u32 gdrst; 746 int ret; 747 748 gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); 749 I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, 750 gdrst | GRDOM_RENDER | GRDOM_RESET_ENABLE); 751 ret = wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500); 752 if (ret) 753 return ret; 754 755 /* We can't reset render&media without also resetting display ... */ 756 gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); 757 I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, 758 gdrst | GRDOM_MEDIA | GRDOM_RESET_ENABLE); 759 return wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500); 760 } 761 762 static int gen6_do_reset(struct drm_device *dev) 763 { 764 struct drm_i915_private *dev_priv = dev->dev_private; 765 int ret; 766 unsigned long irqflags; 767 768 /* Hold gt_lock across reset to prevent any register access 769 * with forcewake not set correctly 770 */ 771 spin_lock_irqsave(&dev_priv->gt_lock, irqflags); 772 773 /* Reset the chip */ 774 775 /* GEN6_GDRST is not in the gt power well, no need to check 776 * for fifo space for the write or forcewake the chip for 777 * the read 778 */ 779 I915_WRITE_NOTRACE(GEN6_GDRST, GEN6_GRDOM_FULL); 780 781 /* Spin waiting for the device to ack the reset request */ 782 ret = wait_for((I915_READ_NOTRACE(GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 500); 783 784 /* If reset with a user forcewake, try to restore, otherwise turn it off */ 785 if (dev_priv->forcewake_count) 786 dev_priv->gt.force_wake_get(dev_priv); 787 else 788 dev_priv->gt.force_wake_put(dev_priv); 789 790 /* Restore fifo count */ 791 dev_priv->gt_fifo_count = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); 792 793 spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); 794 return ret; 795 } 796 797 int intel_gpu_reset(struct drm_device *dev) 798 { 799 struct drm_i915_private *dev_priv = dev->dev_private; 800 int ret = -ENODEV; 801 802 switch (INTEL_INFO(dev)->gen) { 803 case 7: 804 case 6: 805 ret = gen6_do_reset(dev); 806 break; 807 case 5: 808 ret = ironlake_do_reset(dev); 809 break; 810 case 4: 811 ret = i965_do_reset(dev); 812 break; 813 case 2: 814 ret = i8xx_do_reset(dev); 815 break; 816 } 817 818 /* Also reset the gpu hangman. */ 819 if (dev_priv->stop_rings) { 820 DRM_DEBUG("Simulated gpu hang, resetting stop_rings\n"); 821 dev_priv->stop_rings = 0; 822 if (ret == -ENODEV) { 823 DRM_ERROR("Reset not implemented, but ignoring " 824 "error for simulated gpu hangs\n"); 825 ret = 0; 826 } 827 } 828 829 return ret; 830 } 831 832 /** 833 * i915_reset - reset chip after a hang 834 * @dev: drm device to reset 835 * 836 * Reset the chip. Useful if a hang is detected. Returns zero on successful 837 * reset or otherwise an error code. 838 * 839 * Procedure is fairly simple: 840 * - reset the chip using the reset reg 841 * - re-init context state 842 * - re-init hardware status page 843 * - re-init ring buffer 844 * - re-init interrupt state 845 * - re-init display 846 */ 847 int i915_reset(struct drm_device *dev) 848 { 849 drm_i915_private_t *dev_priv = dev->dev_private; 850 int ret; 851 852 if (!i915_try_reset) 853 return 0; 854 855 mutex_lock(&dev->struct_mutex); 856 857 i915_gem_reset(dev); 858 859 ret = -ENODEV; 860 if (get_seconds() - dev_priv->last_gpu_reset < 5) 861 DRM_ERROR("GPU hanging too fast, declaring wedged!\n"); 862 else 863 ret = intel_gpu_reset(dev); 864 865 dev_priv->last_gpu_reset = get_seconds(); 866 if (ret) { 867 DRM_ERROR("Failed to reset chip.\n"); 868 mutex_unlock(&dev->struct_mutex); 869 return ret; 870 } 871 872 /* Ok, now get things going again... */ 873 874 /* 875 * Everything depends on having the GTT running, so we need to start 876 * there. Fortunately we don't need to do this unless we reset the 877 * chip at a PCI level. 878 * 879 * Next we need to restore the context, but we don't use those 880 * yet either... 881 * 882 * Ring buffer needs to be re-initialized in the KMS case, or if X 883 * was running at the time of the reset (i.e. we weren't VT 884 * switched away). 885 */ 886 if (drm_core_check_feature(dev, DRIVER_MODESET) || 887 !dev_priv->mm.suspended) { 888 struct intel_ring_buffer *ring; 889 int i; 890 891 dev_priv->mm.suspended = 0; 892 893 i915_gem_init_swizzling(dev); 894 895 for_each_ring(ring, dev_priv, i) 896 ring->init(ring); 897 898 i915_gem_context_init(dev); 899 i915_gem_init_ppgtt(dev); 900 901 /* 902 * It would make sense to re-init all the other hw state, at 903 * least the rps/rc6/emon init done within modeset_init_hw. For 904 * some unknown reason, this blows up my ilk, so don't. 905 */ 906 907 mutex_unlock(&dev->struct_mutex); 908 909 drm_irq_uninstall(dev); 910 drm_irq_install(dev); 911 } else { 912 mutex_unlock(&dev->struct_mutex); 913 } 914 915 return 0; 916 } 917 918 #ifdef __NetBSD__ 919 920 static const struct uvm_pagerops i915_gem_uvm_ops = { 921 .pgo_reference = drm_gem_pager_reference, 922 .pgo_detach = drm_gem_pager_detach, 923 .pgo_fault = i915_gem_fault, 924 }; 925 926 #else 927 928 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 929 { 930 struct intel_device_info *intel_info = 931 (struct intel_device_info *) ent->driver_data; 932 933 if (intel_info->is_valleyview) 934 if(!i915_preliminary_hw_support) { 935 DRM_ERROR("Preliminary hardware support disabled\n"); 936 return -ENODEV; 937 } 938 939 /* Only bind to function 0 of the device. Early generations 940 * used function 1 as a placeholder for multi-head. This causes 941 * us confusion instead, especially on the systems where both 942 * functions have the same PCI-ID! 943 */ 944 if (PCI_FUNC(pdev->devfn)) 945 return -ENODEV; 946 947 /* We've managed to ship a kms-enabled ddx that shipped with an XvMC 948 * implementation for gen3 (and only gen3) that used legacy drm maps 949 * (gasp!) to share buffers between X and the client. Hence we need to 950 * keep around the fake agp stuff for gen3, even when kms is enabled. */ 951 if (intel_info->gen != 3) { 952 driver.driver_features &= 953 ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP); 954 } else if (!intel_agp_enabled) { 955 DRM_ERROR("drm/i915 can't work without intel_agp module!\n"); 956 return -ENODEV; 957 } 958 959 return drm_get_pci_dev(pdev, ent, &driver); 960 } 961 962 static void 963 i915_pci_remove(struct pci_dev *pdev) 964 { 965 struct drm_device *dev = pci_get_drvdata(pdev); 966 967 drm_put_dev(dev); 968 } 969 970 static int i915_pm_suspend(struct device *dev) 971 { 972 struct pci_dev *pdev = to_pci_dev(dev); 973 struct drm_device *drm_dev = pci_get_drvdata(pdev); 974 int error; 975 976 if (!drm_dev || !drm_dev->dev_private) { 977 dev_err(dev, "DRM not initialized, aborting suspend.\n"); 978 return -ENODEV; 979 } 980 981 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF) 982 return 0; 983 984 error = i915_drm_freeze(drm_dev); 985 if (error) 986 return error; 987 988 pci_disable_device(pdev); 989 pci_set_power_state(pdev, PCI_D3hot); 990 991 return 0; 992 } 993 994 static int i915_pm_resume(struct device *dev) 995 { 996 struct pci_dev *pdev = to_pci_dev(dev); 997 struct drm_device *drm_dev = pci_get_drvdata(pdev); 998 999 return i915_resume(drm_dev); 1000 } 1001 1002 static int i915_pm_freeze(struct device *dev) 1003 { 1004 struct pci_dev *pdev = to_pci_dev(dev); 1005 struct drm_device *drm_dev = pci_get_drvdata(pdev); 1006 1007 if (!drm_dev || !drm_dev->dev_private) { 1008 dev_err(dev, "DRM not initialized, aborting suspend.\n"); 1009 return -ENODEV; 1010 } 1011 1012 return i915_drm_freeze(drm_dev); 1013 } 1014 1015 static int i915_pm_thaw(struct device *dev) 1016 { 1017 struct pci_dev *pdev = to_pci_dev(dev); 1018 struct drm_device *drm_dev = pci_get_drvdata(pdev); 1019 1020 return i915_drm_thaw(drm_dev); 1021 } 1022 1023 static int i915_pm_poweroff(struct device *dev) 1024 { 1025 struct pci_dev *pdev = to_pci_dev(dev); 1026 struct drm_device *drm_dev = pci_get_drvdata(pdev); 1027 1028 return i915_drm_freeze(drm_dev); 1029 } 1030 1031 static const struct dev_pm_ops i915_pm_ops = { 1032 .suspend = i915_pm_suspend, 1033 .resume = i915_pm_resume, 1034 .freeze = i915_pm_freeze, 1035 .thaw = i915_pm_thaw, 1036 .poweroff = i915_pm_poweroff, 1037 .restore = i915_pm_resume, 1038 }; 1039 1040 static const struct vm_operations_struct i915_gem_vm_ops = { 1041 .fault = i915_gem_fault, 1042 .open = drm_gem_vm_open, 1043 .close = drm_gem_vm_close, 1044 }; 1045 1046 static const struct file_operations i915_driver_fops = { 1047 .owner = THIS_MODULE, 1048 .open = drm_open, 1049 .release = drm_release, 1050 .unlocked_ioctl = drm_ioctl, 1051 .mmap = drm_gem_mmap, 1052 .poll = drm_poll, 1053 .fasync = drm_fasync, 1054 .read = drm_read, 1055 #ifdef CONFIG_COMPAT 1056 .compat_ioctl = i915_compat_ioctl, 1057 #endif 1058 .llseek = noop_llseek, 1059 }; 1060 1061 #endif /* defined(__NetBSD__) */ 1062 1063 static struct drm_driver driver = { 1064 /* Don't use MTRRs here; the Xserver or userspace app should 1065 * deal with them for Intel hardware. 1066 */ 1067 .driver_features = 1068 DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/ 1069 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME, 1070 .load = i915_driver_load, 1071 .unload = i915_driver_unload, 1072 .open = i915_driver_open, 1073 .lastclose = i915_driver_lastclose, 1074 .preclose = i915_driver_preclose, 1075 .postclose = i915_driver_postclose, 1076 1077 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */ 1078 .suspend = i915_suspend, 1079 .resume = i915_resume, 1080 1081 .device_is_agp = i915_driver_device_is_agp, 1082 .master_create = i915_master_create, 1083 .master_destroy = i915_master_destroy, 1084 #if defined(CONFIG_DEBUG_FS) 1085 .debugfs_init = i915_debugfs_init, 1086 .debugfs_cleanup = i915_debugfs_cleanup, 1087 #endif 1088 .gem_init_object = i915_gem_init_object, 1089 .gem_free_object = i915_gem_free_object, 1090 #ifdef __NetBSD__ 1091 .gem_uvm_ops = &i915_gem_uvm_ops, 1092 #else 1093 .gem_vm_ops = &i915_gem_vm_ops, 1094 #endif 1095 1096 #ifndef __NetBSD__ /* XXX drm prime */ 1097 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 1098 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 1099 .gem_prime_export = i915_gem_prime_export, 1100 .gem_prime_import = i915_gem_prime_import, 1101 #endif 1102 1103 .dumb_create = i915_gem_dumb_create, 1104 .dumb_map_offset = i915_gem_mmap_gtt, 1105 .dumb_destroy = i915_gem_dumb_destroy, 1106 .ioctls = i915_ioctls, 1107 #ifdef __NetBSD__ 1108 .fops = NULL, 1109 #else 1110 .fops = &i915_driver_fops, 1111 #endif 1112 .name = DRIVER_NAME, 1113 .desc = DRIVER_DESC, 1114 .date = DRIVER_DATE, 1115 .major = DRIVER_MAJOR, 1116 .minor = DRIVER_MINOR, 1117 .patchlevel = DRIVER_PATCHLEVEL, 1118 }; 1119 1120 #ifndef __NetBSD__ 1121 static struct pci_driver i915_pci_driver = { 1122 .name = DRIVER_NAME, 1123 .id_table = pciidlist, 1124 .probe = i915_pci_probe, 1125 .remove = i915_pci_remove, 1126 .driver.pm = &i915_pm_ops, 1127 }; 1128 #endif 1129 1130 #ifndef __NetBSD__ 1131 static int __init i915_init(void) 1132 { 1133 driver.num_ioctls = i915_max_ioctl; 1134 1135 /* 1136 * If CONFIG_DRM_I915_KMS is set, default to KMS unless 1137 * explicitly disabled with the module pararmeter. 1138 * 1139 * Otherwise, just follow the parameter (defaulting to off). 1140 * 1141 * Allow optional vga_text_mode_force boot option to override 1142 * the default behavior. 1143 */ 1144 #if defined(CONFIG_DRM_I915_KMS) 1145 if (i915_modeset != 0) 1146 driver.driver_features |= DRIVER_MODESET; 1147 #endif 1148 if (i915_modeset == 1) 1149 driver.driver_features |= DRIVER_MODESET; 1150 1151 #ifdef CONFIG_VGA_CONSOLE 1152 if (vgacon_text_force() && i915_modeset == -1) 1153 driver.driver_features &= ~DRIVER_MODESET; 1154 #endif 1155 1156 if (!(driver.driver_features & DRIVER_MODESET)) 1157 driver.get_vblank_timestamp = NULL; 1158 1159 return drm_pci_init(&driver, &i915_pci_driver); 1160 } 1161 1162 static void __exit i915_exit(void) 1163 { 1164 drm_pci_exit(&driver, &i915_pci_driver); 1165 } 1166 1167 module_init(i915_init); 1168 module_exit(i915_exit); 1169 #endif 1170 1171 MODULE_AUTHOR(DRIVER_AUTHOR); 1172 MODULE_DESCRIPTION(DRIVER_DESC); 1173 MODULE_LICENSE("GPL and additional rights"); 1174 1175 /* We give fast paths for the really cool registers */ 1176 #define NEEDS_FORCE_WAKE(dev_priv, reg) \ 1177 ((HAS_FORCE_WAKE((dev_priv)->dev)) && \ 1178 ((reg) < 0x40000) && \ 1179 ((reg) != FORCEWAKE)) 1180 1181 static bool IS_DISPLAYREG(u32 reg) 1182 { 1183 /* 1184 * This should make it easier to transition modules over to the 1185 * new register block scheme, since we can do it incrementally. 1186 */ 1187 if (reg >= VLV_DISPLAY_BASE) 1188 return false; 1189 1190 if (reg >= RENDER_RING_BASE && 1191 reg < RENDER_RING_BASE + 0xff) 1192 return false; 1193 if (reg >= GEN6_BSD_RING_BASE && 1194 reg < GEN6_BSD_RING_BASE + 0xff) 1195 return false; 1196 if (reg >= BLT_RING_BASE && 1197 reg < BLT_RING_BASE + 0xff) 1198 return false; 1199 1200 if (reg == PGTBL_ER) 1201 return false; 1202 1203 if (reg >= IPEIR_I965 && 1204 reg < HWSTAM) 1205 return false; 1206 1207 if (reg == MI_MODE) 1208 return false; 1209 1210 if (reg == GFX_MODE_GEN7) 1211 return false; 1212 1213 if (reg == RENDER_HWS_PGA_GEN7 || 1214 reg == BSD_HWS_PGA_GEN7 || 1215 reg == BLT_HWS_PGA_GEN7) 1216 return false; 1217 1218 if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL || 1219 reg == GEN6_BSD_RNCID) 1220 return false; 1221 1222 if (reg == GEN6_BLITTER_ECOSKPD) 1223 return false; 1224 1225 if (reg >= 0x4000c && 1226 reg <= 0x4002c) 1227 return false; 1228 1229 if (reg >= 0x4f000 && 1230 reg <= 0x4f08f) 1231 return false; 1232 1233 if (reg >= 0x4f100 && 1234 reg <= 0x4f11f) 1235 return false; 1236 1237 if (reg >= VLV_MASTER_IER && 1238 reg <= GEN6_PMIER) 1239 return false; 1240 1241 if (reg >= FENCE_REG_SANDYBRIDGE_0 && 1242 reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8))) 1243 return false; 1244 1245 if (reg >= VLV_IIR_RW && 1246 reg <= VLV_ISR) 1247 return false; 1248 1249 if (reg == FORCEWAKE_VLV || 1250 reg == FORCEWAKE_ACK_VLV) 1251 return false; 1252 1253 if (reg == GEN6_GDRST) 1254 return false; 1255 1256 switch (reg) { 1257 case _3D_CHICKEN3: 1258 case IVB_CHICKEN3: 1259 case GEN7_COMMON_SLICE_CHICKEN1: 1260 case GEN7_L3CNTLREG1: 1261 case GEN7_L3_CHICKEN_MODE_REGISTER: 1262 case GEN7_ROW_CHICKEN2: 1263 case GEN7_L3SQCREG4: 1264 case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG: 1265 case GEN7_HALF_SLICE_CHICKEN1: 1266 case GEN6_MBCTL: 1267 case GEN6_UCGCTL2: 1268 return false; 1269 default: 1270 break; 1271 } 1272 1273 return true; 1274 } 1275 1276 static void 1277 ilk_dummy_write(struct drm_i915_private *dev_priv) 1278 { 1279 /* WaIssueDummyWriteToWakeupFromRC6: Issue a dummy write to wake up the 1280 * chip from rc6 before touching it for real. MI_MODE is masked, hence 1281 * harmless to write 0 into. */ 1282 I915_WRITE_NOTRACE(MI_MODE, 0); 1283 } 1284 1285 #ifdef __NetBSD__ 1286 #define __i915_read(x, y) \ 1287 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \ 1288 u##x val = 0; \ 1289 if (IS_GEN5(dev_priv->dev)) \ 1290 ilk_dummy_write(dev_priv); \ 1291 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 1292 unsigned long irqflags; \ 1293 spin_lock_irqsave(&dev_priv->gt_lock, irqflags); \ 1294 if (dev_priv->forcewake_count == 0) \ 1295 dev_priv->gt.force_wake_get(dev_priv); \ 1296 val = DRM_READ##x(dev_priv->regs_map, reg); \ 1297 if (dev_priv->forcewake_count == 0) \ 1298 dev_priv->gt.force_wake_put(dev_priv); \ 1299 spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \ 1300 } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 1301 val = DRM_READ##x(dev_priv->regs_map, reg + 0x180000); \ 1302 } else { \ 1303 val = DRM_READ##x(dev_priv->regs_map, reg); \ 1304 } \ 1305 trace_i915_reg_rw(false, reg, val, sizeof(val)); \ 1306 return val; \ 1307 } 1308 #else 1309 #define __i915_read(x, y) \ 1310 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \ 1311 u##x val = 0; \ 1312 if (IS_GEN5(dev_priv->dev)) \ 1313 ilk_dummy_write(dev_priv); \ 1314 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 1315 unsigned long irqflags; \ 1316 spin_lock_irqsave(&dev_priv->gt_lock, irqflags); \ 1317 if (dev_priv->forcewake_count == 0) \ 1318 dev_priv->gt.force_wake_get(dev_priv); \ 1319 val = read##y(dev_priv->regs + reg); \ 1320 if (dev_priv->forcewake_count == 0) \ 1321 dev_priv->gt.force_wake_put(dev_priv); \ 1322 spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \ 1323 } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 1324 val = read##y(dev_priv->regs + reg + 0x180000); \ 1325 } else { \ 1326 val = read##y(dev_priv->regs + reg); \ 1327 } \ 1328 trace_i915_reg_rw(false, reg, val, sizeof(val)); \ 1329 return val; \ 1330 } 1331 #endif 1332 1333 __i915_read(8, b) 1334 __i915_read(16, w) 1335 __i915_read(32, l) 1336 __i915_read(64, q) 1337 #undef __i915_read 1338 1339 #ifdef __NetBSD__ 1340 #define __i915_write(x, y) \ 1341 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \ 1342 u32 __fifo_ret = 0; \ 1343 trace_i915_reg_rw(true, reg, val, sizeof(val)); \ 1344 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 1345 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ 1346 } \ 1347 if (IS_GEN5(dev_priv->dev)) \ 1348 ilk_dummy_write(dev_priv); \ 1349 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 1350 DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \ 1351 I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ 1352 } \ 1353 if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 1354 DRM_WRITE##x(dev_priv->regs_map, reg + 0x180000, val); \ 1355 } else { \ 1356 DRM_WRITE##x(dev_priv->regs_map, reg, val); \ 1357 } \ 1358 if (unlikely(__fifo_ret)) { \ 1359 gen6_gt_check_fifodbg(dev_priv); \ 1360 } \ 1361 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 1362 DRM_ERROR("Unclaimed write to %x\n", reg); \ 1363 DRM_WRITE32(dev_priv->regs_map, GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ 1364 } \ 1365 } 1366 #else 1367 #define __i915_write(x, y) \ 1368 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \ 1369 u32 __fifo_ret = 0; \ 1370 trace_i915_reg_rw(true, reg, val, sizeof(val)); \ 1371 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ 1372 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ 1373 } \ 1374 if (IS_GEN5(dev_priv->dev)) \ 1375 ilk_dummy_write(dev_priv); \ 1376 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 1377 DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \ 1378 I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ 1379 } \ 1380 if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ 1381 write##y(val, dev_priv->regs + reg + 0x180000); \ 1382 } else { \ 1383 write##y(val, dev_priv->regs + reg); \ 1384 } \ 1385 if (unlikely(__fifo_ret)) { \ 1386 gen6_gt_check_fifodbg(dev_priv); \ 1387 } \ 1388 if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ 1389 DRM_ERROR("Unclaimed write to %x\n", reg); \ 1390 writel(ERR_INT_MMIO_UNCLAIMED, dev_priv->regs + GEN7_ERR_INT); \ 1391 } \ 1392 } 1393 #endif 1394 1395 __i915_write(8, b) 1396 __i915_write(16, w) 1397 __i915_write(32, l) 1398 __i915_write(64, q) 1399 #undef __i915_write 1400 1401 static const struct register_whitelist { 1402 uint64_t offset; 1403 uint32_t size; 1404 uint32_t gen_bitmask; /* support gens, 0x10 for 4, 0x30 for 4 and 5, etc. */ 1405 } whitelist[] = { 1406 { RING_TIMESTAMP(RENDER_RING_BASE), 8, 0xF0 }, 1407 }; 1408 1409 int i915_reg_read_ioctl(struct drm_device *dev, 1410 void *data, struct drm_file *file) 1411 { 1412 struct drm_i915_private *dev_priv = dev->dev_private; 1413 struct drm_i915_reg_read *reg = data; 1414 struct register_whitelist const *entry = whitelist; 1415 int i; 1416 1417 for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) { 1418 if (entry->offset == reg->offset && 1419 (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask)) 1420 break; 1421 } 1422 1423 if (i == ARRAY_SIZE(whitelist)) 1424 return -EINVAL; 1425 1426 switch (entry->size) { 1427 case 8: 1428 reg->val = I915_READ64(reg->offset); 1429 break; 1430 case 4: 1431 reg->val = I915_READ(reg->offset); 1432 break; 1433 case 2: 1434 reg->val = I915_READ16(reg->offset); 1435 break; 1436 case 1: 1437 reg->val = I915_READ8(reg->offset); 1438 break; 1439 default: 1440 WARN_ON(1); 1441 return -EINVAL; 1442 } 1443 1444 return 0; 1445 } 1446
Indexes created Tue Oct 21 08:09:48 GMT 2025