sys/dev/drm2/i915/i915_drv.c

   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 <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <dev/drm2/drmP.h>
  34 #include <dev/drm2/drm_pciids.h>
  35 #include <dev/drm2/i915/i915_drm.h>
  36 #include "dev/drm2/i915/i915_drv.h"
  37 #ifdef __linux__
  38 #include "dev/drm2/i915/i915_trace.h"
  39 #endif
  40 #include "dev/drm2/i915/intel_drv.h"
  41
  42 #include <dev/drm2/drm_crtc_helper.h>
  43
  44 #include "fb_if.h"
  45
  46 static int i915_modeset __read_mostly = 1;
  47 TUNABLE_INT("drm.i915.modeset", &i915_modeset);
  48 module_param_named(modeset, i915_modeset, int, 0400);
  49 MODULE_PARM_DESC(modeset,
  50                 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
  51                 "1=on, -1=force vga console preference [default])");
  52
  53 #ifdef __linux__
  54 unsigned int i915_fbpercrtc __always_unused = 0;
  55 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
  56 #endif
  57
  58 int i915_panel_ignore_lid __read_mostly = 1;
  59 TUNABLE_INT("drm.i915.panel_ignore_lid", &i915_panel_ignore_lid);
  60 module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600);
  61 MODULE_PARM_DESC(panel_ignore_lid,
  62                 "Override lid status (0=autodetect, 1=autodetect disabled [default], "
  63                 "-1=force lid closed, -2=force lid open)");
  64
  65 unsigned int i915_powersave __read_mostly = 1;
  66 TUNABLE_INT("drm.i915.powersave", &i915_powersave);
  67 module_param_named(powersave, i915_powersave, int, 0600);
  68 MODULE_PARM_DESC(powersave,
  69                 "Enable powersavings, fbc, downclocking, etc. (default: true)");
  70
  71 int i915_semaphores __read_mostly = -1;
  72 TUNABLE_INT("drm.i915.semaphores", &i915_semaphores);
  73 module_param_named(semaphores, i915_semaphores, int, 0600);
  74 MODULE_PARM_DESC(semaphores,
  75                 "Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))");
  76
  77 int i915_enable_rc6 __read_mostly = -1;
  78 TUNABLE_INT("drm.i915.enable_rc6", &i915_enable_rc6);
  79 module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0400);
  80 MODULE_PARM_DESC(i915_enable_rc6,
  81                 "Enable power-saving render C-state 6. "
  82                 "Different stages can be selected via bitmask values "
  83                 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
  84                 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
  85                 "default: -1 (use per-chip default)");
  86
  87 int i915_enable_fbc __read_mostly = -1;
  88 TUNABLE_INT("drm.i915.enable_fbc", &i915_enable_fbc);
  89 module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600);
  90 MODULE_PARM_DESC(i915_enable_fbc,
  91                 "Enable frame buffer compression for power savings "
  92                 "(default: -1 (use per-chip default))");
  93
  94 unsigned int i915_lvds_downclock __read_mostly = 0;
  95 TUNABLE_INT("drm.i915.lvds_downclock", &i915_lvds_downclock);
  96 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
  97 MODULE_PARM_DESC(lvds_downclock,
  98                 "Use panel (LVDS/eDP) downclocking for power savings "
  99                 "(default: false)");
 100
 101 int i915_lvds_channel_mode __read_mostly;
 102 TUNABLE_INT("drm.i915.lvds_channel_mode", &i915_lvds_channel_mode);
 103 module_param_named(lvds_channel_mode, i915_lvds_channel_mode, int, 0600);
 104 MODULE_PARM_DESC(lvds_channel_mode,
 105                  "Specify LVDS channel mode "
 106                  "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
 107
 108 int i915_panel_use_ssc __read_mostly = -1;
 109 TUNABLE_INT("drm.i915.panel_use_ssc", &i915_panel_use_ssc);
 110 module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600);
 111 MODULE_PARM_DESC(lvds_use_ssc,
 112                 "Use Spread Spectrum Clock with panels [LVDS/eDP] "
 113                 "(default: auto from VBT)");
 114
 115 int i915_vbt_sdvo_panel_type __read_mostly = -1;
 116 TUNABLE_INT("drm.i915.vbt_sdvo_panel_type", &i915_vbt_sdvo_panel_type);
 117 module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600);
 118 MODULE_PARM_DESC(vbt_sdvo_panel_type,
 119                 "Override/Ignore selection of SDVO panel mode in the VBT "
 120                 "(-2=ignore, -1=auto [default], index in VBT BIOS table)");
 121
 122 static int i915_try_reset __read_mostly = true;
 123 TUNABLE_INT("drm.i915.try_reset", &i915_try_reset);
 124 module_param_named(reset, i915_try_reset, bool, 0600);
 125 MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
 126
 127 int i915_enable_hangcheck __read_mostly = true;
 128 TUNABLE_INT("drm.i915.enable_hangcheck", &i915_enable_hangcheck);
 129 module_param_named(enable_hangcheck, i915_enable_hangcheck, bool, 0644);
 130 MODULE_PARM_DESC(enable_hangcheck,
 131                 "Periodically check GPU activity for detecting hangs. "
 132                 "WARNING: Disabling this can cause system wide hangs. "
 133                 "(default: true)");
 134
 135 int i915_enable_ppgtt __read_mostly = -1;
 136 TUNABLE_INT("drm.i915.enable_ppgtt", &i915_enable_ppgtt);
 137 module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, int, 0600);
 138 MODULE_PARM_DESC(i915_enable_ppgtt,
 139                 "Enable PPGTT (default: true)");
 140
 141 unsigned int i915_preliminary_hw_support __read_mostly = 0;
 142 TUNABLE_INT("drm.i915.enable_unsupported", &i915_preliminary_hw_support);
 143 module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600);
 144 MODULE_PARM_DESC(preliminary_hw_support,
 145                 "Enable preliminary hardware support. "
 146                 "Enable Haswell and ValleyView Support. "
 147                 "(default: false)");
 148
 149 int intel_iommu_gfx_mapped = 0;
 150 TUNABLE_INT("drm.i915.intel_iommu_gfx_mapped", &intel_iommu_gfx_mapped);
 151
 152 static struct drm_driver driver;
 153 int intel_agp_enabled = 1; /* On FreeBSD, agp is a required dependency. */
 154
 155 #define INTEL_VGA_DEVICE(id, info_) {           \
 156         .device = id,                           \
 157         .info = info_,                          \
 158 }
 159
 160 static const struct intel_device_info intel_i830_info = {
 161         .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1,
 162         .has_overlay = 1, .overlay_needs_physical = 1,
 163 };
 164
 165 static const struct intel_device_info intel_845g_info = {
 166         .gen = 2,
 167         .has_overlay = 1, .overlay_needs_physical = 1,
 168 };
 169
 170 static const struct intel_device_info intel_i85x_info = {
 171         .gen = 2, .is_i85x = 1, .is_mobile = 1,
 172         .cursor_needs_physical = 1,
 173         .has_overlay = 1, .overlay_needs_physical = 1,
 174 };
 175
 176 static const struct intel_device_info intel_i865g_info = {
 177         .gen = 2,
 178         .has_overlay = 1, .overlay_needs_physical = 1,
 179 };
 180
 181 static const struct intel_device_info intel_i915g_info = {
 182         .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1,
 183         .has_overlay = 1, .overlay_needs_physical = 1,
 184 };
 185 static const struct intel_device_info intel_i915gm_info = {
 186         .gen = 3, .is_mobile = 1,
 187         .cursor_needs_physical = 1,
 188         .has_overlay = 1, .overlay_needs_physical = 1,
 189         .supports_tv = 1,
 190 };
 191 static const struct intel_device_info intel_i945g_info = {
 192         .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1,
 193         .has_overlay = 1, .overlay_needs_physical = 1,
 194 };
 195 static const struct intel_device_info intel_i945gm_info = {
 196         .gen = 3, .is_i945gm = 1, .is_mobile = 1,
 197         .has_hotplug = 1, .cursor_needs_physical = 1,
 198         .has_overlay = 1, .overlay_needs_physical = 1,
 199         .supports_tv = 1,
 200 };
 201
 202 static const struct intel_device_info intel_i965g_info = {
 203         .gen = 4, .is_broadwater = 1,
 204         .has_hotplug = 1,
 205         .has_overlay = 1,
 206 };
 207
 208 static const struct intel_device_info intel_i965gm_info = {
 209         .gen = 4, .is_crestline = 1,
 210         .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
 211         .has_overlay = 1,
 212         .supports_tv = 1,
 213 };
 214
 215 static const struct intel_device_info intel_g33_info = {
 216         .gen = 3, .is_g33 = 1,
 217         .need_gfx_hws = 1, .has_hotplug = 1,
 218         .has_overlay = 1,
 219 };
 220
 221 static const struct intel_device_info intel_g45_info = {
 222         .gen = 4, .is_g4x = 1, .need_gfx_hws = 1,
 223         .has_pipe_cxsr = 1, .has_hotplug = 1,
 224         .has_bsd_ring = 1,
 225 };
 226
 227 static const struct intel_device_info intel_gm45_info = {
 228         .gen = 4, .is_g4x = 1,
 229         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
 230         .has_pipe_cxsr = 1, .has_hotplug = 1,
 231         .supports_tv = 1,
 232         .has_bsd_ring = 1,
 233 };
 234
 235 static const struct intel_device_info intel_pineview_info = {
 236         .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1,
 237         .need_gfx_hws = 1, .has_hotplug = 1,
 238         .has_overlay = 1,
 239 };
 240
 241 static const struct intel_device_info intel_ironlake_d_info = {
 242         .gen = 5,
 243         .need_gfx_hws = 1, .has_hotplug = 1,
 244         .has_bsd_ring = 1,
 245 };
 246
 247 static const struct intel_device_info intel_ironlake_m_info = {
 248         .gen = 5, .is_mobile = 1,
 249         .need_gfx_hws = 1, .has_hotplug = 1,
 250         .has_fbc = 1,
 251         .has_bsd_ring = 1,
 252 };
 253
 254 static const struct intel_device_info intel_sandybridge_d_info = {
 255         .gen = 6,
 256         .need_gfx_hws = 1, .has_hotplug = 1,
 257         .has_bsd_ring = 1,
 258         .has_blt_ring = 1,
 259         .has_llc = 1,
 260         .has_force_wake = 1,
 261 };
 262
 263 static const struct intel_device_info intel_sandybridge_m_info = {
 264         .gen = 6, .is_mobile = 1,
 265         .need_gfx_hws = 1, .has_hotplug = 1,
 266         .has_fbc = 1,
 267         .has_bsd_ring = 1,
 268         .has_blt_ring = 1,
 269         .has_llc = 1,
 270         .has_force_wake = 1,
 271 };
 272
 273 static const struct intel_device_info intel_ivybridge_d_info = {
 274         .is_ivybridge = 1, .gen = 7,
 275         .need_gfx_hws = 1, .has_hotplug = 1,
 276         .has_bsd_ring = 1,
 277         .has_blt_ring = 1,
 278         .has_llc = 1,
 279         .has_force_wake = 1,
 280 };
 281
 282 static const struct intel_device_info intel_ivybridge_m_info = {
 283         .is_ivybridge = 1, .gen = 7, .is_mobile = 1,
 284         .need_gfx_hws = 1, .has_hotplug = 1,
 285         .has_fbc = 0,   /* FBC is not enabled on Ivybridge mobile yet */
 286         .has_bsd_ring = 1,
 287         .has_blt_ring = 1,
 288         .has_llc = 1,
 289         .has_force_wake = 1,
 290 };
 291
 292 static const struct intel_device_info intel_valleyview_m_info = {
 293         .gen = 7, .is_mobile = 1,
 294         .need_gfx_hws = 1, .has_hotplug = 1,
 295         .has_fbc = 0,
 296         .has_bsd_ring = 1,
 297         .has_blt_ring = 1,
 298         .is_valleyview = 1,
 299 };
 300
 301 static const struct intel_device_info intel_valleyview_d_info = {
 302         .gen = 7,
 303         .need_gfx_hws = 1, .has_hotplug = 1,
 304         .has_fbc = 0,
 305         .has_bsd_ring = 1,
 306         .has_blt_ring = 1,
 307         .is_valleyview = 1,
 308 };
 309
 310 static const struct intel_device_info intel_haswell_d_info = {
 311         .is_haswell = 1, .gen = 7,
 312         .need_gfx_hws = 1, .has_hotplug = 1,
 313         .has_bsd_ring = 1,
 314         .has_blt_ring = 1,
 315         .has_llc = 1,
 316         .has_force_wake = 1,
 317 };
 318
 319 static const struct intel_device_info intel_haswell_m_info = {
 320         .is_haswell = 1, .gen = 7, .is_mobile = 1,
 321         .need_gfx_hws = 1, .has_hotplug = 1,
 322         .has_bsd_ring = 1,
 323         .has_blt_ring = 1,
 324         .has_llc = 1,
 325         .has_force_wake = 1,
 326 };
 327
 328 /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
 329 static const drm_pci_id_list_t pciidlist[] = {
 330         i915_PCI_IDS
 331 };
 332
 333 static const struct intel_gfx_device_id {
 334         int device;
 335         const struct intel_device_info *info;
 336 } i915_infolist[] = {           /* aka */
 337         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),             /* I830_M */
 338         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),             /* 845_G */
 339         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),             /* I855_GM */
 340         INTEL_VGA_DEVICE(0x358e, &intel_i85x_info),
 341         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),            /* I865_G */
 342         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),            /* I915_G */
 343         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),            /* E7221_G */
 344         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),           /* I915_GM */
 345         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),            /* I945_G */
 346         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),           /* I945_GM */
 347         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),           /* I945_GME */
 348         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),            /* I946_GZ */
 349         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),            /* G35_G */
 350         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),            /* I965_Q */
 351         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),            /* I965_G */
 352         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),              /* Q35_G */
 353         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),              /* G33_G */
 354         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),              /* Q33_G */
 355         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),           /* I965_GM */
 356         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),           /* I965_GME */
 357         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),             /* GM45_G */
 358         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),              /* IGD_E_G */
 359         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),              /* Q45_G */
 360         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),              /* G45_G */
 361         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),              /* G41_G */
 362         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),              /* B43_G */
 363         INTEL_VGA_DEVICE(0x2e92, &intel_g45_info),              /* B43_G.1 */
 364         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 365         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 366         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 367         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 368         INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info),
 369         INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info),
 370         INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info),
 371         INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info),
 372         INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info),
 373         INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info),
 374         INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info),
 375         INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info), /* GT1 mobile */
 376         INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info), /* GT2 mobile */
 377         INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info), /* GT1 desktop */
 378         INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info), /* GT2 desktop */
 379         INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info), /* GT1 server */
 380         INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info), /* GT2 server */
 381         INTEL_VGA_DEVICE(0x0402, &intel_haswell_d_info), /* GT1 desktop */
 382         INTEL_VGA_DEVICE(0x0412, &intel_haswell_d_info), /* GT2 desktop */
 383         INTEL_VGA_DEVICE(0x0422, &intel_haswell_d_info), /* GT2 desktop */
 384         INTEL_VGA_DEVICE(0x040a, &intel_haswell_d_info), /* GT1 server */
 385         INTEL_VGA_DEVICE(0x041a, &intel_haswell_d_info), /* GT2 server */
 386         INTEL_VGA_DEVICE(0x042a, &intel_haswell_d_info), /* GT2 server */
 387         INTEL_VGA_DEVICE(0x0406, &intel_haswell_m_info), /* GT1 mobile */
 388         INTEL_VGA_DEVICE(0x0416, &intel_haswell_m_info), /* GT2 mobile */
 389         INTEL_VGA_DEVICE(0x0426, &intel_haswell_m_info), /* GT2 mobile */
 390         INTEL_VGA_DEVICE(0x0C02, &intel_haswell_d_info), /* SDV GT1 desktop */
 391         INTEL_VGA_DEVICE(0x0C12, &intel_haswell_d_info), /* SDV GT2 desktop */
 392         INTEL_VGA_DEVICE(0x0C22, &intel_haswell_d_info), /* SDV GT2 desktop */
 393         INTEL_VGA_DEVICE(0x0C0A, &intel_haswell_d_info), /* SDV GT1 server */
 394         INTEL_VGA_DEVICE(0x0C1A, &intel_haswell_d_info), /* SDV GT2 server */
 395         INTEL_VGA_DEVICE(0x0C2A, &intel_haswell_d_info), /* SDV GT2 server */
 396         INTEL_VGA_DEVICE(0x0C06, &intel_haswell_m_info), /* SDV GT1 mobile */
 397         INTEL_VGA_DEVICE(0x0C16, &intel_haswell_m_info), /* SDV GT2 mobile */
 398         INTEL_VGA_DEVICE(0x0C26, &intel_haswell_m_info), /* SDV GT2 mobile */
 399         INTEL_VGA_DEVICE(0x0A02, &intel_haswell_d_info), /* ULT GT1 desktop */
 400         INTEL_VGA_DEVICE(0x0A12, &intel_haswell_d_info), /* ULT GT2 desktop */
 401         INTEL_VGA_DEVICE(0x0A22, &intel_haswell_d_info), /* ULT GT2 desktop */
 402         INTEL_VGA_DEVICE(0x0A0A, &intel_haswell_d_info), /* ULT GT1 server */
 403         INTEL_VGA_DEVICE(0x0A1A, &intel_haswell_d_info), /* ULT GT2 server */
 404         INTEL_VGA_DEVICE(0x0A2A, &intel_haswell_d_info), /* ULT GT2 server */
 405         INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info), /* ULT GT1 mobile */
 406         INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info), /* ULT GT2 mobile */
 407         INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info), /* ULT GT2 mobile */
 408         INTEL_VGA_DEVICE(0x0D02, &intel_haswell_d_info), /* CRW GT1 desktop */
 409         INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT2 desktop */
 410         INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info), /* CRW GT2 desktop */
 411         INTEL_VGA_DEVICE(0x0D0A, &intel_haswell_d_info), /* CRW GT1 server */
 412         INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT2 server */
 413         INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info), /* CRW GT2 server */
 414         INTEL_VGA_DEVICE(0x0D06, &intel_haswell_m_info), /* CRW GT1 mobile */
 415         INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT2 mobile */
 416         INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info), /* CRW GT2 mobile */
 417         INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info),
 418         INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info),
 419         INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info),
 420         {0, 0}
 421 };
 422
 423 #if defined(CONFIG_DRM_I915_KMS)
 424 MODULE_DEVICE_TABLE(pci, pciidlist);
 425 #endif
 426
 427 void intel_detect_pch(struct drm_device *dev)
 428 {
 429         struct drm_i915_private *dev_priv = dev->dev_private;
 430         device_t pch;
 431
 432         /*
 433          * The reason to probe ISA bridge instead of Dev31:Fun0 is to
 434          * make graphics device passthrough work easy for VMM, that only
 435          * need to expose ISA bridge to let driver know the real hardware
 436          * underneath. This is a requirement from virtualization team.
 437          */
 438         pch = pci_find_class(PCIC_BRIDGE, PCIS_BRIDGE_ISA);
 439         if (pch) {
 440                 if (pci_get_vendor(pch) == PCI_VENDOR_ID_INTEL) {
 441                         unsigned short id;
 442                         id = pci_get_device(pch) & INTEL_PCH_DEVICE_ID_MASK;
 443                         dev_priv->pch_id = id;
 444
 445                         if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
 446                                 dev_priv->pch_type = PCH_IBX;
 447                                 dev_priv->num_pch_pll = 2;
 448                                 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
 449                                 WARN_ON(!IS_GEN5(dev));
 450                         } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
 451                                 dev_priv->pch_type = PCH_CPT;
 452                                 dev_priv->num_pch_pll = 2;
 453                                 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
 454                                 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
 455                         } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
 456                                 /* PantherPoint is CPT compatible */
 457                                 dev_priv->pch_type = PCH_CPT;
 458                                 dev_priv->num_pch_pll = 2;
 459                                 DRM_DEBUG_KMS("Found PatherPoint PCH\n");
 460                                 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
 461                         } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
 462                                 dev_priv->pch_type = PCH_LPT;
 463                                 dev_priv->num_pch_pll = 0;
 464                                 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
 465                                 WARN_ON(!IS_HASWELL(dev));
 466                         } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
 467                                 dev_priv->pch_type = PCH_LPT;
 468                                 dev_priv->num_pch_pll = 0;
 469                                 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
 470                                 WARN_ON(!IS_HASWELL(dev));
 471                         }
 472                         BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS);
 473                 }
 474         }
 475 }
 476
 477 bool i915_semaphore_is_enabled(struct drm_device *dev)
 478 {
 479         if (INTEL_INFO(dev)->gen < 6)
 480                 return 0;
 481
 482         if (i915_semaphores >= 0)
 483                 return i915_semaphores;
 484
 485 #ifdef CONFIG_INTEL_IOMMU
 486         /* Enable semaphores on SNB when IO remapping is off */
 487         if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
 488                 return false;
 489 #endif
 490
 491         return 1;
 492 }
 493
 494 static int i915_drm_freeze(struct drm_device *dev)
 495 {
 496         struct drm_i915_private *dev_priv = dev->dev_private;
 497
 498         drm_kms_helper_poll_disable(dev);
 499
 500 #ifdef __linux__
 501         pci_save_state(dev->pdev);
 502 #endif
 503
 504         /* If KMS is active, we do the leavevt stuff here */
 505         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 506                 int error = i915_gem_idle(dev);
 507                 if (error) {
 508                         dev_err(dev->dev,
 509                                 "GEM idle failed, resume might fail\n");
 510                         return error;
 511                 }
 512
 513                 taskqueue_cancel_timeout(dev_priv->wq,
 514                     &dev_priv->rps.delayed_resume_work, NULL);
 515
 516                 intel_modeset_disable(dev);
 517
 518                 drm_irq_uninstall(dev);
 519         }
 520
 521         i915_save_state(dev);
 522
 523         intel_opregion_fini(dev);
 524
 525         /* Modeset on resume, not lid events */
 526         dev_priv->modeset_on_lid = 0;
 527
 528         console_lock();
 529         intel_fbdev_set_suspend(dev, 1);
 530         console_unlock();
 531
 532         return 0;
 533 }
 534
 535 int i915_suspend(struct drm_device *dev, pm_message_t state)
 536 {
 537         int error;
 538
 539         if (!dev || !dev->dev_private) {
 540                 DRM_ERROR("dev: %p\n", dev);
 541                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 542                 return -ENODEV;
 543         }
 544
 545         if (state.event == PM_EVENT_PRETHAW)
 546                 return 0;
 547
 548
 549         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 550                 return 0;
 551
 552         error = i915_drm_freeze(dev);
 553         if (error)
 554                 return error;
 555
 556         if (state.event == PM_EVENT_SUSPEND) {
 557 #ifdef __linux__
 558                 /* Shut down the device */
 559                 pci_disable_device(dev->pdev);
 560                 pci_set_power_state(dev->pdev, PCI_D3hot);
 561 #endif
 562         }
 563
 564         return 0;
 565 }
 566
 567 void intel_console_resume(void *arg, int pending)
 568 {
 569         struct drm_i915_private *dev_priv =
 570                 arg;
 571         struct drm_device *dev = dev_priv->dev;
 572
 573         console_lock();
 574         intel_fbdev_set_suspend(dev, 0);
 575         console_unlock();
 576 }
 577
 578 static int __i915_drm_thaw(struct drm_device *dev)
 579 {
 580         struct drm_i915_private *dev_priv = dev->dev_private;
 581         int error = 0;
 582
 583         i915_restore_state(dev);
 584         intel_opregion_setup(dev);
 585
 586         /* KMS EnterVT equivalent */
 587         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 588                 intel_init_pch_refclk(dev);
 589
 590                 DRM_LOCK(dev);
 591                 dev_priv->mm.suspended = 0;
 592
 593                 error = i915_gem_init_hw(dev);
 594                 DRM_UNLOCK(dev);
 595
 596                 intel_modeset_init_hw(dev);
 597                 intel_modeset_setup_hw_state(dev, false);
 598                 drm_irq_install(dev);
 599         }
 600
 601         intel_opregion_init(dev);
 602
 603         dev_priv->modeset_on_lid = 0;
 604
 605         /*
 606          * The console lock can be pretty contented on resume due
 607          * to all the printk activity.  Try to keep it out of the hot
 608          * path of resume if possible.
 609          */
 610         if (console_trylock()) {
 611                 intel_fbdev_set_suspend(dev, 0);
 612                 console_unlock();
 613         } else {
 614                 taskqueue_enqueue(dev_priv->wq,
 615                     &dev_priv->console_resume_work);
 616         }
 617
 618         return error;
 619 }
 620
 621 #ifdef __linux__
 622 static int i915_drm_thaw(struct drm_device *dev)
 623 {
 624         int error = 0;
 625
 626         intel_gt_reset(dev);
 627
 628         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 629                 DRM_LOCK(dev);
 630                 i915_gem_restore_gtt_mappings(dev);
 631                 DRM_UNLOCK(dev);
 632         }
 633
 634         __i915_drm_thaw(dev);
 635
 636         return error;
 637 }
 638 #endif
 639
 640 int i915_resume(struct drm_device *dev)
 641 {
 642         struct drm_i915_private *dev_priv = dev->dev_private;
 643         int ret;
 644
 645         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 646                 return 0;
 647
 648 #ifdef __linux__
 649         if (pci_enable_device(dev->pdev))
 650                 return -EIO;
 651
 652         pci_set_master(dev->pdev);
 653 #endif
 654
 655         intel_gt_reset(dev);
 656
 657         /*
 658          * Platforms with opregion should have sane BIOS, older ones (gen3 and
 659          * earlier) need this since the BIOS might clear all our scratch PTEs.
 660          */
 661         if (drm_core_check_feature(dev, DRIVER_MODESET) &&
 662             !dev_priv->opregion.header) {
 663                 DRM_LOCK(dev);
 664                 i915_gem_restore_gtt_mappings(dev);
 665                 DRM_UNLOCK(dev);
 666         }
 667
 668         ret = __i915_drm_thaw(dev);
 669         if (ret)
 670                 return ret;
 671
 672         drm_kms_helper_poll_enable(dev);
 673         return 0;
 674 }
 675
 676 static int i8xx_do_reset(struct drm_device *dev)
 677 {
 678         struct drm_i915_private *dev_priv = dev->dev_private;
 679         int onems;
 680
 681         if (IS_I85X(dev))
 682                 return -ENODEV;
 683
 684         onems = hz / 1000;
 685         if (onems == 0)
 686                 onems = 1;
 687
 688         I915_WRITE(D_STATE, I915_READ(D_STATE) | DSTATE_GFX_RESET_I830);
 689         POSTING_READ(D_STATE);
 690
 691         if (IS_I830(dev) || IS_845G(dev)) {
 692                 I915_WRITE(DEBUG_RESET_I830,
 693                            DEBUG_RESET_DISPLAY |
 694                            DEBUG_RESET_RENDER |
 695                            DEBUG_RESET_FULL);
 696                 POSTING_READ(DEBUG_RESET_I830);
 697                 pause("i8xxrst1", onems);
 698
 699                 I915_WRITE(DEBUG_RESET_I830, 0);
 700                 POSTING_READ(DEBUG_RESET_I830);
 701         }
 702
 703         pause("i8xxrst2", onems);
 704
 705         I915_WRITE(D_STATE, I915_READ(D_STATE) & ~DSTATE_GFX_RESET_I830);
 706         POSTING_READ(D_STATE);
 707
 708         return 0;
 709 }
 710
 711 static int i965_reset_complete(struct drm_device *dev)
 712 {
 713         u8 gdrst;
 714         pci_read_config_byte(dev->dev, I965_GDRST, &gdrst);
 715         return (gdrst & GRDOM_RESET_ENABLE) == 0;
 716 }
 717
 718 static int i965_do_reset(struct drm_device *dev)
 719 {
 720         int ret;
 721         u8 gdrst;
 722
 723         /*
 724          * Set the domains we want to reset (GRDOM/bits 2 and 3) as
 725          * well as the reset bit (GR/bit 0).  Setting the GR bit
 726          * triggers the reset; when done, the hardware will clear it.
 727          */
 728         pci_read_config_byte(dev->dev, I965_GDRST, &gdrst);
 729         pci_write_config_byte(dev->dev, I965_GDRST,
 730                               gdrst | GRDOM_RENDER |
 731                               GRDOM_RESET_ENABLE);
 732         ret =  wait_for(i965_reset_complete(dev), 500);
 733         if (ret)
 734                 return ret;
 735
 736         /* We can't reset render&media without also resetting display ... */
 737         pci_read_config_byte(dev->dev, I965_GDRST, &gdrst);
 738         pci_write_config_byte(dev->dev, I965_GDRST,
 739                               gdrst | GRDOM_MEDIA |
 740                               GRDOM_RESET_ENABLE);
 741
 742         return wait_for(i965_reset_complete(dev), 500);
 743 }
 744
 745 static int ironlake_do_reset(struct drm_device *dev)
 746 {
 747         struct drm_i915_private *dev_priv = dev->dev_private;
 748         u32 gdrst;
 749         int ret;
 750
 751         gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR);
 752         I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR,
 753                    gdrst | GRDOM_RENDER | GRDOM_RESET_ENABLE);
 754         ret = wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500);
 755         if (ret)
 756                 return ret;
 757
 758         /* We can't reset render&media without also resetting display ... */
 759         gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR);
 760         I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR,
 761                    gdrst | GRDOM_MEDIA | GRDOM_RESET_ENABLE);
 762         return wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500);
 763 }
 764
 765 static int gen6_do_reset(struct drm_device *dev)
 766 {
 767         struct drm_i915_private *dev_priv = dev->dev_private;
 768         int     ret;
 769
 770         /* Hold gt_lock across reset to prevent any register access
 771          * with forcewake not set correctly
 772          */
 773         mtx_lock(&dev_priv->gt_lock);
 774
 775         /* Reset the chip */
 776
 777         /* GEN6_GDRST is not in the gt power well, no need to check
 778          * for fifo space for the write or forcewake the chip for
 779          * the read
 780          */
 781         I915_WRITE_NOTRACE(GEN6_GDRST, GEN6_GRDOM_FULL);
 782
 783         /* Spin waiting for the device to ack the reset request */
 784         /*
 785          * NOTE Linux<->FreeBSD: We use _intel_wait_for() instead of
 786          * wait_for(), because we want to set the 4th argument to 0.
 787          * This allows us to use a struct mtx for dev_priv->gt_lock and
 788          * avoid a LOR.
 789          */
 790         ret = _intel_wait_for(dev,
 791             (I915_READ_NOTRACE(GEN6_GDRST) & GEN6_GRDOM_FULL) == 0,
 792             500, 0, "915rst");
 793
 794         /* If reset with a user forcewake, try to restore, otherwise turn it off */
 795         if (dev_priv->forcewake_count)
 796                 dev_priv->gt.force_wake_get(dev_priv);
 797         else
 798                 dev_priv->gt.force_wake_put(dev_priv);
 799
 800         /* Restore fifo count */
 801         dev_priv->gt_fifo_count = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES);
 802
 803         mtx_unlock(&dev_priv->gt_lock);
 804         return ret;
 805 }
 806
 807 int intel_gpu_reset(struct drm_device *dev)
 808 {
 809         struct drm_i915_private *dev_priv = dev->dev_private;
 810         int ret = -ENODEV;
 811
 812         switch (INTEL_INFO(dev)->gen) {
 813         case 7:
 814         case 6:
 815                 ret = gen6_do_reset(dev);
 816                 break;
 817         case 5:
 818                 ret = ironlake_do_reset(dev);
 819                 break;
 820         case 4:
 821                 ret = i965_do_reset(dev);
 822                 break;
 823         case 2:
 824                 ret = i8xx_do_reset(dev);
 825                 break;
 826         }
 827
 828         /* Also reset the gpu hangman. */
 829         if (dev_priv->stop_rings) {
 830                 DRM_DEBUG("Simulated gpu hang, resetting stop_rings\n");
 831                 dev_priv->stop_rings = 0;
 832                 if (ret == -ENODEV) {
 833                         DRM_ERROR("Reset not implemented, but ignoring "
 834                                   "error for simulated gpu hangs\n");
 835                         ret = 0;
 836                 }
 837         }
 838
 839         return ret;
 840 }
 841
 842 /**
 843  * i915_reset - reset chip after a hang
 844  * @dev: drm device to reset
 845  *
 846  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 847  * reset or otherwise an error code.
 848  *
 849  * Procedure is fairly simple:
 850  *   - reset the chip using the reset reg
 851  *   - re-init context state
 852  *   - re-init hardware status page
 853  *   - re-init ring buffer
 854  *   - re-init interrupt state
 855  *   - re-init display
 856  */
 857 int i915_reset(struct drm_device *dev)
 858 {
 859         drm_i915_private_t *dev_priv = dev->dev_private;
 860         int ret;
 861
 862         if (!i915_try_reset)
 863                 return 0;
 864
 865         DRM_LOCK(dev);
 866
 867         i915_gem_reset(dev);
 868
 869         ret = -ENODEV;
 870         if (get_seconds() - dev_priv->last_gpu_reset < 5)
 871                 DRM_ERROR("GPU hanging too fast, declaring wedged!\n");
 872         else
 873                 ret = intel_gpu_reset(dev);
 874
 875         dev_priv->last_gpu_reset = get_seconds();
 876         if (ret) {
 877                 DRM_ERROR("Failed to reset chip.\n");
 878                 DRM_UNLOCK(dev);
 879                 return ret;
 880         }
 881
 882         /* Ok, now get things going again... */
 883
 884         /*
 885          * Everything depends on having the GTT running, so we need to start
 886          * there.  Fortunately we don't need to do this unless we reset the
 887          * chip at a PCI level.
 888          *
 889          * Next we need to restore the context, but we don't use those
 890          * yet either...
 891          *
 892          * Ring buffer needs to be re-initialized in the KMS case, or if X
 893          * was running at the time of the reset (i.e. we weren't VT
 894          * switched away).
 895          */
 896         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 897                         !dev_priv->mm.suspended) {
 898                 struct intel_ring_buffer *ring;
 899                 int i;
 900
 901                 dev_priv->mm.suspended = 0;
 902
 903                 i915_gem_init_swizzling(dev);
 904
 905                 for_each_ring(ring, dev_priv, i)
 906                         ring->init(ring);
 907
 908                 i915_gem_context_init(dev);
 909                 i915_gem_init_ppgtt(dev);
 910
 911                 /*
 912                  * It would make sense to re-init all the other hw state, at
 913                  * least the rps/rc6/emon init done within modeset_init_hw. For
 914                  * some unknown reason, this blows up my ilk, so don't.
 915                  */
 916
 917                 DRM_UNLOCK(dev);
 918
 919                 drm_irq_uninstall(dev);
 920                 drm_irq_install(dev);
 921         } else {
 922                 DRM_UNLOCK(dev);
 923         }
 924
 925         return 0;
 926 }
 927
 928 const struct intel_device_info *
 929 i915_get_device_id(int device)
 930 {
 931         const struct intel_gfx_device_id *did;
 932
 933         for (did = &i915_infolist[0]; did->device != 0; did++) {
 934                 if (did->device != device)
 935                         continue;
 936                 return (did->info);
 937         }
 938         return (NULL);
 939 }
 940
 941 static int i915_probe(device_t kdev)
 942 {
 943         const struct intel_device_info *intel_info =
 944                 i915_get_device_id(pci_get_device(kdev));
 945
 946         if (intel_info == NULL)
 947                 return (ENXIO);
 948         if (intel_info->is_valleyview)
 949                 if(!i915_preliminary_hw_support) {
 950                         DRM_ERROR("Preliminary hardware support disabled\n");
 951                         return (ENXIO);
 952                 }
 953
 954         /* Only bind to function 0 of the device. Early generations
 955          * used function 1 as a placeholder for multi-head. This causes
 956          * us confusion instead, especially on the systems where both
 957          * functions have the same PCI-ID!
 958          */
 959         if (pci_get_function(kdev))
 960                 return (ENXIO);
 961
 962         /* We've managed to ship a kms-enabled ddx that shipped with an XvMC
 963          * implementation for gen3 (and only gen3) that used legacy drm maps
 964          * (gasp!) to share buffers between X and the client. Hence we need to
 965          * keep around the fake agp stuff for gen3, even when kms is enabled. */
 966         if (intel_info->gen != 3) {
 967                 driver.driver_features &=
 968                         ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP);
 969         } else if (!intel_agp_enabled) {
 970                 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
 971                 return (ENXIO);
 972         }
 973
 974         return -drm_probe_helper(kdev, pciidlist);
 975 }
 976
 977 #ifdef __linux__
 978 static void
 979 i915_pci_remove(struct pci_dev *pdev)
 980 {
 981         struct drm_device *dev = pci_get_drvdata(pdev);
 982
 983         drm_put_dev(dev);
 984 }
 985
 986 static int i915_pm_suspend(struct device *dev)
 987 {
 988         struct pci_dev *pdev = to_pci_dev(dev);
 989         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 990         int error;
 991
 992         if (!drm_dev || !drm_dev->dev_private) {
 993                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 994                 return -ENODEV;
 995         }
 996
 997         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 998                 return 0;
 999
1000         error = i915_drm_freeze(drm_dev);
1001         if (error)
1002                 return error;
1003
1004         pci_disable_device(pdev);
1005         pci_set_power_state(pdev, PCI_D3hot);
1006
1007         return 0;
1008 }
1009
1010 static int i915_pm_resume(struct device *dev)
1011 {
1012         struct pci_dev *pdev = to_pci_dev(dev);
1013         struct drm_device *drm_dev = pci_get_drvdata(pdev);
1014
1015         return i915_resume(drm_dev);
1016 }
1017
1018 static int i915_pm_freeze(struct device *dev)
1019 {
1020         struct pci_dev *pdev = to_pci_dev(dev);
1021         struct drm_device *drm_dev = pci_get_drvdata(pdev);
1022
1023         if (!drm_dev || !drm_dev->dev_private) {
1024                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
1025                 return -ENODEV;
1026         }
1027
1028         return i915_drm_freeze(drm_dev);
1029 }
1030
1031 static int i915_pm_thaw(struct device *dev)
1032 {
1033         struct pci_dev *pdev = to_pci_dev(dev);
1034         struct drm_device *drm_dev = pci_get_drvdata(pdev);
1035
1036         return i915_drm_thaw(drm_dev);
1037 }
1038
1039 static int i915_pm_poweroff(struct device *dev)
1040 {
1041         struct pci_dev *pdev = to_pci_dev(dev);
1042         struct drm_device *drm_dev = pci_get_drvdata(pdev);
1043
1044         return i915_drm_freeze(drm_dev);
1045 }
1046
1047 static const struct dev_pm_ops i915_pm_ops = {
1048         .suspend = i915_pm_suspend,
1049         .resume = i915_pm_resume,
1050         .freeze = i915_pm_freeze,
1051         .thaw = i915_pm_thaw,
1052         .poweroff = i915_pm_poweroff,
1053         .restore = i915_pm_resume,
1054 };
1055
1056 static const struct vm_operations_struct i915_gem_vm_ops = {
1057         .fault = i915_gem_fault,
1058         .open = drm_gem_vm_open,
1059         .close = drm_gem_vm_close,
1060 };
1061
1062 static const struct file_operations i915_driver_fops = {
1063         .owner = THIS_MODULE,
1064         .open = drm_open,
1065         .release = drm_release,
1066         .unlocked_ioctl = drm_ioctl,
1067         .mmap = drm_gem_mmap,
1068         .poll = drm_poll,
1069         .fasync = drm_fasync,
1070         .read = drm_read,
1071 #ifdef CONFIG_COMPAT
1072         .compat_ioctl = i915_compat_ioctl,
1073 #endif
1074         .llseek = noop_llseek,
1075 };
1076 #endif /* __linux__ */
1077
1078 #ifdef COMPAT_FREEBSD32
1079 extern struct drm_ioctl_desc i915_compat_ioctls[];
1080 extern int i915_compat_ioctls_nr;
1081 #endif
1082
1083 static struct drm_driver driver = {
1084         /* Don't use MTRRs here; the Xserver or userspace app should
1085          * deal with them for Intel hardware.
1086          */
1087         .driver_features =
1088             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
1089             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME,
1090         .load = i915_driver_load,
1091         .unload = i915_driver_unload,
1092         .open = i915_driver_open,
1093         .lastclose = i915_driver_lastclose,
1094         .preclose = i915_driver_preclose,
1095         .postclose = i915_driver_postclose,
1096
1097         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
1098         .suspend = i915_suspend,
1099         .resume = i915_resume,
1100
1101         .device_is_agp = i915_driver_device_is_agp,
1102         .master_create = i915_master_create,
1103         .master_destroy = i915_master_destroy,
1104 #if defined(CONFIG_DEBUG_FS)
1105         .debugfs_init = i915_debugfs_init,
1106         .debugfs_cleanup = i915_debugfs_cleanup,
1107 #endif
1108         .gem_init_object = i915_gem_init_object,
1109         .gem_free_object = i915_gem_free_object,
1110 #if defined(__linux__)
1111         .gem_vm_ops = &i915_gem_vm_ops,
1112 #elif defined(__FreeBSD__)
1113         .gem_pager_ops  = &i915_gem_pager_ops,
1114 #endif
1115
1116 #ifdef FREEBSD_WIP
1117         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1118         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1119         .gem_prime_export = i915_gem_prime_export,
1120         .gem_prime_import = i915_gem_prime_import,
1121 #endif /* FREEBSD_WIP */
1122
1123         .dumb_create = i915_gem_dumb_create,
1124         .dumb_map_offset = i915_gem_mmap_gtt,
1125         .dumb_destroy = i915_gem_dumb_destroy,
1126         .ioctls = i915_ioctls,
1127 #ifdef COMPAT_FREEBSD32
1128         .compat_ioctls  = i915_compat_ioctls,
1129         .num_compat_ioctls = &i915_compat_ioctls_nr,
1130 #endif
1131 #ifdef __linux__
1132         .fops = &i915_driver_fops,
1133 #endif
1134 #ifdef __FreeBSD__
1135         .sysctl_init    = i915_sysctl_init,
1136         .sysctl_cleanup = i915_sysctl_cleanup,
1137 #endif
1138         .name = DRIVER_NAME,
1139         .desc = DRIVER_DESC,
1140         .date = DRIVER_DATE,
1141         .major = DRIVER_MAJOR,
1142         .minor = DRIVER_MINOR,
1143         .patchlevel = DRIVER_PATCHLEVEL,
1144 };
1145
1146 #ifdef __linux__
1147 static struct pci_driver i915_pci_driver = {
1148         .name = DRIVER_NAME,
1149         .id_table = pciidlist,
1150         .probe = i915_pci_probe,
1151         .remove = i915_pci_remove,
1152         .driver.pm = &i915_pm_ops,
1153 };
1154 #endif
1155
1156 static int __init i915_attach(device_t kdev)
1157 {
1158         driver.num_ioctls = i915_max_ioctl;
1159
1160         /*
1161          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1162          * explicitly disabled with the module pararmeter.
1163          *
1164          * Otherwise, just follow the parameter (defaulting to off).
1165          *
1166          * Allow optional vga_text_mode_force boot option to override
1167          * the default behavior.
1168          */
1169 #if defined(CONFIG_DRM_I915_KMS)
1170         if (i915_modeset != 0)
1171                 driver.driver_features |= DRIVER_MODESET;
1172 #endif
1173         if (i915_modeset == 1)
1174                 driver.driver_features |= DRIVER_MODESET;
1175
1176 #ifdef CONFIG_VGA_CONSOLE
1177         if (vgacon_text_force() && i915_modeset == -1)
1178                 driver.driver_features &= ~DRIVER_MODESET;
1179 #endif
1180
1181         if (!(driver.driver_features & DRIVER_MODESET))
1182                 driver.get_vblank_timestamp = NULL;
1183
1184         return (-drm_attach_helper(kdev, pciidlist, &driver));
1185 }
1186
1187 static struct fb_info *
1188 i915_fb_helper_getinfo(device_t kdev)
1189 {
1190         struct intel_fbdev *ifbdev;
1191         drm_i915_private_t *dev_priv;
1192         struct drm_device *dev;
1193         struct fb_info *info;
1194
1195         dev = device_get_softc(kdev);
1196         dev_priv = dev->dev_private;
1197         ifbdev = dev_priv->fbdev;
1198         if (ifbdev == NULL)
1199                 return (NULL);
1200
1201         info = ifbdev->helper.fbdev;
1202
1203         return (info);
1204 }
1205
1206 static device_method_t i915_methods[] = {
1207         /* Device interface */
1208         DEVMETHOD(device_probe,         i915_probe),
1209         DEVMETHOD(device_attach,        i915_attach),
1210         DEVMETHOD(device_suspend,       drm_generic_suspend),
1211         DEVMETHOD(device_resume,        drm_generic_resume),
1212         DEVMETHOD(device_detach,        drm_generic_detach),
1213
1214         /* Framebuffer service methods */
1215         DEVMETHOD(fb_getinfo,           i915_fb_helper_getinfo),
1216
1217         DEVMETHOD_END
1218 };
1219
1220 static driver_t i915_driver = {
1221         "drmn",
1222         i915_methods,
1223         sizeof(struct drm_device)
1224 };
1225
1226 MODULE_AUTHOR(DRIVER_AUTHOR);
1227 MODULE_DESCRIPTION(DRIVER_DESC);
1228 MODULE_LICENSE("GPL and additional rights");
1229
1230 extern devclass_t drm_devclass;
1231 DRIVER_MODULE_ORDERED(i915kms, vgapci, i915_driver, drm_devclass, 0, 0,
1232     SI_ORDER_ANY);
1233 MODULE_DEPEND(i915kms, drmn, 1, 1, 1);
1234 MODULE_DEPEND(i915kms, agp, 1, 1, 1);
1235 MODULE_DEPEND(i915kms, iicbus, 1, 1, 1);
1236 MODULE_DEPEND(i915kms, iic, 1, 1, 1);
1237 MODULE_DEPEND(i915kms, iicbb, 1, 1, 1);
1238
1239 /* We give fast paths for the really cool registers */
1240 #define NEEDS_FORCE_WAKE(dev_priv, reg) \
1241         ((HAS_FORCE_WAKE((dev_priv)->dev)) && \
1242          ((reg) < 0x40000) &&            \
1243          ((reg) != FORCEWAKE))
1244
1245 static bool IS_DISPLAYREG(u32 reg)
1246 {
1247         /*
1248          * This should make it easier to transition modules over to the
1249          * new register block scheme, since we can do it incrementally.
1250          */
1251         if (reg >= VLV_DISPLAY_BASE)
1252                 return false;
1253
1254         if (reg >= RENDER_RING_BASE &&
1255             reg < RENDER_RING_BASE + 0xff)
1256                 return false;
1257         if (reg >= GEN6_BSD_RING_BASE &&
1258             reg < GEN6_BSD_RING_BASE + 0xff)
1259                 return false;
1260         if (reg >= BLT_RING_BASE &&
1261             reg < BLT_RING_BASE + 0xff)
1262                 return false;
1263
1264         if (reg == PGTBL_ER)
1265                 return false;
1266
1267         if (reg >= IPEIR_I965 &&
1268             reg < HWSTAM)
1269                 return false;
1270
1271         if (reg == MI_MODE)
1272                 return false;
1273
1274         if (reg == GFX_MODE_GEN7)
1275                 return false;
1276
1277         if (reg == RENDER_HWS_PGA_GEN7 ||
1278             reg == BSD_HWS_PGA_GEN7 ||
1279             reg == BLT_HWS_PGA_GEN7)
1280                 return false;
1281
1282         if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL ||
1283             reg == GEN6_BSD_RNCID)
1284                 return false;
1285
1286         if (reg == GEN6_BLITTER_ECOSKPD)
1287                 return false;
1288
1289         if (reg >= 0x4000c &&
1290             reg <= 0x4002c)
1291                 return false;
1292
1293         if (reg >= 0x4f000 &&
1294             reg <= 0x4f08f)
1295                 return false;
1296
1297         if (reg >= 0x4f100 &&
1298             reg <= 0x4f11f)
1299                 return false;
1300
1301         if (reg >= VLV_MASTER_IER &&
1302             reg <= GEN6_PMIER)
1303                 return false;
1304
1305         if (reg >= FENCE_REG_SANDYBRIDGE_0 &&
1306             reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8)))
1307                 return false;
1308
1309         if (reg >= VLV_IIR_RW &&
1310             reg <= VLV_ISR)
1311                 return false;
1312
1313         if (reg == FORCEWAKE_VLV ||
1314             reg == FORCEWAKE_ACK_VLV)
1315                 return false;
1316
1317         if (reg == GEN6_GDRST)
1318                 return false;
1319
1320         switch (reg) {
1321         case _3D_CHICKEN3:
1322         case IVB_CHICKEN3:
1323         case GEN7_COMMON_SLICE_CHICKEN1:
1324         case GEN7_L3CNTLREG1:
1325         case GEN7_L3_CHICKEN_MODE_REGISTER:
1326         case GEN7_ROW_CHICKEN2:
1327         case GEN7_L3SQCREG4:
1328         case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG:
1329         case GEN7_HALF_SLICE_CHICKEN1:
1330         case GEN6_MBCTL:
1331         case GEN6_UCGCTL2:
1332                 return false;
1333         default:
1334                 break;
1335         }
1336
1337         return true;
1338 }
1339
1340 static void
1341 ilk_dummy_write(struct drm_i915_private *dev_priv)
1342 {
1343         /* WaIssueDummyWriteToWakeupFromRC6: Issue a dummy write to wake up the
1344          * chip from rc6 before touching it for real. MI_MODE is masked, hence
1345          * harmless to write 0 into. */
1346         I915_WRITE_NOTRACE(MI_MODE, 0);
1347 }
1348
1349 #define __i915_read(x, y) \
1350 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
1351         u##x val = 0; \
1352         if (IS_GEN5(dev_priv->dev)) \
1353                 ilk_dummy_write(dev_priv); \
1354         if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1355                 mtx_lock(&dev_priv->gt_lock); \
1356                 if (dev_priv->forcewake_count == 0) \
1357                         dev_priv->gt.force_wake_get(dev_priv); \
1358                 val = DRM_READ##x(dev_priv->mmio_map, reg); \
1359                 if (dev_priv->forcewake_count == 0) \
1360                         dev_priv->gt.force_wake_put(dev_priv); \
1361                 mtx_unlock(&dev_priv->gt_lock); \
1362         } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
1363                 val = DRM_READ##x(dev_priv->mmio_map, reg + 0x180000);          \
1364         } else { \
1365                 val = DRM_READ##x(dev_priv->mmio_map, reg); \
1366         } \
1367         trace_i915_reg_rw(false, reg, val, sizeof(val)); \
1368         return val; \
1369 }
1370
1371 __i915_read(8, b)
1372 __i915_read(16, w)
1373 __i915_read(32, l)
1374 __i915_read(64, q)
1375 #undef __i915_read
1376
1377 #define __i915_write(x, y) \
1378 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
1379         u32 __fifo_ret = 0; \
1380         trace_i915_reg_rw(true, reg, val, sizeof(val)); \
1381         if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1382                 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
1383         } \
1384         if (IS_GEN5(dev_priv->dev)) \
1385                 ilk_dummy_write(dev_priv); \
1386         if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \
1387                 DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \
1388                 I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \
1389         } \
1390         if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \
1391                 DRM_WRITE##x(dev_priv->mmio_map, reg + 0x180000, val);          \
1392         } else {                                                        \
1393                 DRM_WRITE##x(dev_priv->mmio_map, reg, val);                     \
1394         }                                                               \
1395         if (unlikely(__fifo_ret)) { \
1396                 gen6_gt_check_fifodbg(dev_priv); \
1397         } \
1398         if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \
1399                 DRM_ERROR("Unclaimed write to %x\n", reg); \
1400                 DRM_WRITE32(dev_priv->mmio_map, GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED);  \
1401         } \
1402 }
1403 __i915_write(8, b)
1404 __i915_write(16, w)
1405 __i915_write(32, l)
1406 __i915_write(64, q)
1407 #undef __i915_write
1408
1409 static const struct register_whitelist {
1410         uint64_t offset;
1411         uint32_t size;
1412         uint32_t gen_bitmask; /* support gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
1413 } whitelist[] = {
1414         { RING_TIMESTAMP(RENDER_RING_BASE), 8, 0xF0 },
1415 };
1416
1417 int i915_reg_read_ioctl(struct drm_device *dev,
1418                         void *data, struct drm_file *file)
1419 {
1420         struct drm_i915_private *dev_priv = dev->dev_private;
1421         struct drm_i915_reg_read *reg = data;
1422         struct register_whitelist const *entry = whitelist;
1423         int i;
1424
1425         for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
1426                 if (entry->offset == reg->offset &&
1427                     (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask))
1428                         break;
1429         }
1430
1431         if (i == ARRAY_SIZE(whitelist))
1432                 return -EINVAL;
1433
1434         switch (entry->size) {
1435         case 8:
1436                 reg->val = I915_READ64(reg->offset);
1437                 break;
1438         case 4:
1439                 reg->val = I915_READ(reg->offset);
1440                 break;
1441         case 2:
1442                 reg->val = I915_READ16(reg->offset);
1443                 break;
1444         case 1:
1445                 reg->val = I915_READ8(reg->offset);
1446                 break;
1447         default:
1448                 WARN_ON(1);
1449                 return -EINVAL;
1450         }
1451
1452         return 0;
1453 }