drivers/gpu/drm/nouveau/nouveau_state.c

   1 /*
   2  * Copyright 2005 Stephane Marchesin
   3  * Copyright 2008 Stuart Bennett
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include <linux/swab.h>
  27 #include <linux/slab.h>
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "drm_sarea.h"
  31 #include "drm_crtc_helper.h"
  32 #include <linux/vgaarb.h>
  33 #include <linux/vga_switcheroo.h>
  34
  35 #include "nouveau_drv.h"
  36 #include <nouveau_drm.h>
  37 #include "nouveau_fbcon.h"
  38 #include "nouveau_pm.h"
  39 #include "nv04_display.h"
  40 #include "nv50_display.h"
  41 #include "nouveau_acpi.h"
  42
  43 static void nouveau_stub_takedown(struct drm_device *dev) {}
  44 static int nouveau_stub_init(struct drm_device *dev) { return 0; }
  45
  46 static int nouveau_init_engine_ptrs(struct drm_device *dev)
  47 {
  48         struct drm_nouveau_private *dev_priv = dev->dev_private;
  49         struct nouveau_engine *engine = &dev_priv->engine;
  50
  51         switch (dev_priv->chipset & 0xf0) {
  52         case 0x00:
  53                 engine->display.early_init      = nv04_display_early_init;
  54                 engine->display.late_takedown   = nv04_display_late_takedown;
  55                 engine->display.create          = nv04_display_create;
  56                 engine->display.destroy         = nv04_display_destroy;
  57                 engine->display.init            = nv04_display_init;
  58                 engine->display.fini            = nv04_display_fini;
  59                 engine->pm.clocks_get           = nv04_pm_clocks_get;
  60                 engine->pm.clocks_pre           = nv04_pm_clocks_pre;
  61                 engine->pm.clocks_set           = nv04_pm_clocks_set;
  62                 break;
  63         case 0x10:
  64                 engine->display.early_init      = nv04_display_early_init;
  65                 engine->display.late_takedown   = nv04_display_late_takedown;
  66                 engine->display.create          = nv04_display_create;
  67                 engine->display.destroy         = nv04_display_destroy;
  68                 engine->display.init            = nv04_display_init;
  69                 engine->display.fini            = nv04_display_fini;
  70                 engine->pm.clocks_get           = nv04_pm_clocks_get;
  71                 engine->pm.clocks_pre           = nv04_pm_clocks_pre;
  72                 engine->pm.clocks_set           = nv04_pm_clocks_set;
  73                 break;
  74         case 0x20:
  75                 engine->display.early_init      = nv04_display_early_init;
  76                 engine->display.late_takedown   = nv04_display_late_takedown;
  77                 engine->display.create          = nv04_display_create;
  78                 engine->display.destroy         = nv04_display_destroy;
  79                 engine->display.init            = nv04_display_init;
  80                 engine->display.fini            = nv04_display_fini;
  81                 engine->pm.clocks_get           = nv04_pm_clocks_get;
  82                 engine->pm.clocks_pre           = nv04_pm_clocks_pre;
  83                 engine->pm.clocks_set           = nv04_pm_clocks_set;
  84                 break;
  85         case 0x30:
  86                 engine->display.early_init      = nv04_display_early_init;
  87                 engine->display.late_takedown   = nv04_display_late_takedown;
  88                 engine->display.create          = nv04_display_create;
  89                 engine->display.destroy         = nv04_display_destroy;
  90                 engine->display.init            = nv04_display_init;
  91                 engine->display.fini            = nv04_display_fini;
  92                 engine->pm.clocks_get           = nv04_pm_clocks_get;
  93                 engine->pm.clocks_pre           = nv04_pm_clocks_pre;
  94                 engine->pm.clocks_set           = nv04_pm_clocks_set;
  95                 engine->pm.voltage_get          = nouveau_voltage_gpio_get;
  96                 engine->pm.voltage_set          = nouveau_voltage_gpio_set;
  97                 break;
  98         case 0x40:
  99         case 0x60:
 100                 engine->display.early_init      = nv04_display_early_init;
 101                 engine->display.late_takedown   = nv04_display_late_takedown;
 102                 engine->display.create          = nv04_display_create;
 103                 engine->display.destroy         = nv04_display_destroy;
 104                 engine->display.init            = nv04_display_init;
 105                 engine->display.fini            = nv04_display_fini;
 106                 engine->pm.clocks_get           = nv40_pm_clocks_get;
 107                 engine->pm.clocks_pre           = nv40_pm_clocks_pre;
 108                 engine->pm.clocks_set           = nv40_pm_clocks_set;
 109                 engine->pm.voltage_get          = nouveau_voltage_gpio_get;
 110                 engine->pm.voltage_set          = nouveau_voltage_gpio_set;
 111                 engine->pm.temp_get             = nv40_temp_get;
 112                 engine->pm.pwm_get              = nv40_pm_pwm_get;
 113                 engine->pm.pwm_set              = nv40_pm_pwm_set;
 114                 break;
 115         case 0x50:
 116         case 0x80: /* gotta love NVIDIA's consistency.. */
 117         case 0x90:
 118         case 0xa0:
 119                 engine->display.early_init      = nv50_display_early_init;
 120                 engine->display.late_takedown   = nv50_display_late_takedown;
 121                 engine->display.create          = nv50_display_create;
 122                 engine->display.destroy         = nv50_display_destroy;
 123                 engine->display.init            = nv50_display_init;
 124                 engine->display.fini            = nv50_display_fini;
 125                 switch (dev_priv->chipset) {
 126                 case 0x84:
 127                 case 0x86:
 128                 case 0x92:
 129                 case 0x94:
 130                 case 0x96:
 131                 case 0x98:
 132                 case 0xa0:
 133                 case 0xaa:
 134                 case 0xac:
 135                 case 0x50:
 136                         engine->pm.clocks_get   = nv50_pm_clocks_get;
 137                         engine->pm.clocks_pre   = nv50_pm_clocks_pre;
 138                         engine->pm.clocks_set   = nv50_pm_clocks_set;
 139                         break;
 140                 default:
 141                         engine->pm.clocks_get   = nva3_pm_clocks_get;
 142                         engine->pm.clocks_pre   = nva3_pm_clocks_pre;
 143                         engine->pm.clocks_set   = nva3_pm_clocks_set;
 144                         break;
 145                 }
 146                 engine->pm.voltage_get          = nouveau_voltage_gpio_get;
 147                 engine->pm.voltage_set          = nouveau_voltage_gpio_set;
 148                 if (dev_priv->chipset >= 0x84)
 149                         engine->pm.temp_get     = nv84_temp_get;
 150                 else
 151                         engine->pm.temp_get     = nv40_temp_get;
 152                 engine->pm.pwm_get              = nv50_pm_pwm_get;
 153                 engine->pm.pwm_set              = nv50_pm_pwm_set;
 154                 break;
 155         case 0xc0:
 156                 engine->display.early_init      = nv50_display_early_init;
 157                 engine->display.late_takedown   = nv50_display_late_takedown;
 158                 engine->display.create          = nv50_display_create;
 159                 engine->display.destroy         = nv50_display_destroy;
 160                 engine->display.init            = nv50_display_init;
 161                 engine->display.fini            = nv50_display_fini;
 162                 engine->pm.temp_get             = nv84_temp_get;
 163                 engine->pm.clocks_get           = nvc0_pm_clocks_get;
 164                 engine->pm.clocks_pre           = nvc0_pm_clocks_pre;
 165                 engine->pm.clocks_set           = nvc0_pm_clocks_set;
 166                 engine->pm.voltage_get          = nouveau_voltage_gpio_get;
 167                 engine->pm.voltage_set          = nouveau_voltage_gpio_set;
 168                 engine->pm.pwm_get              = nv50_pm_pwm_get;
 169                 engine->pm.pwm_set              = nv50_pm_pwm_set;
 170                 break;
 171         case 0xd0:
 172                 engine->display.early_init      = nouveau_stub_init;
 173                 engine->display.late_takedown   = nouveau_stub_takedown;
 174                 engine->display.create          = nvd0_display_create;
 175                 engine->display.destroy         = nvd0_display_destroy;
 176                 engine->display.init            = nvd0_display_init;
 177                 engine->display.fini            = nvd0_display_fini;
 178                 engine->pm.temp_get             = nv84_temp_get;
 179                 engine->pm.clocks_get           = nvc0_pm_clocks_get;
 180                 engine->pm.clocks_pre           = nvc0_pm_clocks_pre;
 181                 engine->pm.clocks_set           = nvc0_pm_clocks_set;
 182                 engine->pm.voltage_get          = nouveau_voltage_gpio_get;
 183                 engine->pm.voltage_set          = nouveau_voltage_gpio_set;
 184                 break;
 185         case 0xe0:
 186                 engine->display.early_init      = nouveau_stub_init;
 187                 engine->display.late_takedown   = nouveau_stub_takedown;
 188                 engine->display.create          = nvd0_display_create;
 189                 engine->display.destroy         = nvd0_display_destroy;
 190                 engine->display.init            = nvd0_display_init;
 191                 engine->display.fini            = nvd0_display_fini;
 192                 break;
 193         default:
 194                 NV_ERROR(dev, "NV%02x unsupported\n", dev_priv->chipset);
 195                 return 1;
 196         }
 197
 198         /* headless mode */
 199         if (nouveau_modeset == 2) {
 200                 engine->display.early_init = nouveau_stub_init;
 201                 engine->display.late_takedown = nouveau_stub_takedown;
 202                 engine->display.create = nouveau_stub_init;
 203                 engine->display.init = nouveau_stub_init;
 204                 engine->display.destroy = nouveau_stub_takedown;
 205         }
 206
 207         return 0;
 208 }
 209
 210 static unsigned int
 211 nouveau_vga_set_decode(void *priv, bool state)
 212 {
 213         struct drm_device *dev = priv;
 214         struct drm_nouveau_private *dev_priv = dev->dev_private;
 215
 216         if (dev_priv->chipset >= 0x40)
 217                 nv_wr32(dev, 0x88054, state);
 218         else
 219                 nv_wr32(dev, 0x1854, state);
 220
 221         if (state)
 222                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 223                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 224         else
 225                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 226 }
 227
 228 static void nouveau_switcheroo_set_state(struct pci_dev *pdev,
 229                                          enum vga_switcheroo_state state)
 230 {
 231         struct drm_device *dev = pci_get_drvdata(pdev);
 232         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
 233         if (state == VGA_SWITCHEROO_ON) {
 234                 printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
 235                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 236                 nouveau_pci_resume(pdev);
 237                 drm_kms_helper_poll_enable(dev);
 238                 dev->switch_power_state = DRM_SWITCH_POWER_ON;
 239         } else {
 240                 printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
 241                 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 242                 drm_kms_helper_poll_disable(dev);
 243                 nouveau_switcheroo_optimus_dsm();
 244                 nouveau_pci_suspend(pdev, pmm);
 245                 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
 246         }
 247 }
 248
 249 static void nouveau_switcheroo_reprobe(struct pci_dev *pdev)
 250 {
 251         struct drm_device *dev = pci_get_drvdata(pdev);
 252         nouveau_fbcon_output_poll_changed(dev);
 253 }
 254
 255 static bool nouveau_switcheroo_can_switch(struct pci_dev *pdev)
 256 {
 257         struct drm_device *dev = pci_get_drvdata(pdev);
 258         bool can_switch;
 259
 260         spin_lock(&dev->count_lock);
 261         can_switch = (dev->open_count == 0);
 262         spin_unlock(&dev->count_lock);
 263         return can_switch;
 264 }
 265
 266 static const struct vga_switcheroo_client_ops nouveau_switcheroo_ops = {
 267         .set_gpu_state = nouveau_switcheroo_set_state,
 268         .reprobe = nouveau_switcheroo_reprobe,
 269         .can_switch = nouveau_switcheroo_can_switch,
 270 };
 271
 272 int
 273 nouveau_card_init(struct drm_device *dev)
 274 {
 275         struct drm_nouveau_private *dev_priv = dev->dev_private;
 276         struct nouveau_engine *engine;
 277         int ret;
 278
 279         vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
 280         vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops);
 281
 282         /* Initialise internal driver API hooks */
 283         ret = nouveau_init_engine_ptrs(dev);
 284         if (ret)
 285                 goto out;
 286         engine = &dev_priv->engine;
 287         spin_lock_init(&dev_priv->context_switch_lock);
 288
 289         /* Make the CRTCs and I2C buses accessible */
 290         ret = engine->display.early_init(dev);
 291         if (ret)
 292                 goto out;
 293
 294         /* Parse BIOS tables / Run init tables if card not POSTed */
 295         ret = nouveau_bios_init(dev);
 296         if (ret)
 297                 goto out_display_early;
 298
 299         /* workaround an odd issue on nvc1 by disabling the device's
 300          * nosnoop capability.  hopefully won't cause issues until a
 301          * better fix is found - assuming there is one...
 302          */
 303         if (dev_priv->chipset == 0xc1) {
 304                 nv_mask(dev, 0x00088080, 0x00000800, 0x00000000);
 305         }
 306
 307         ret = nouveau_irq_init(dev);
 308         if (ret)
 309                 goto out_bios;
 310
 311         ret = nouveau_display_create(dev);
 312         if (ret)
 313                 goto out_irq;
 314
 315         nouveau_backlight_init(dev);
 316         nouveau_pm_init(dev);
 317
 318         if (dev->mode_config.num_crtc) {
 319                 ret = nouveau_display_init(dev);
 320                 if (ret)
 321                         goto out_pm;
 322         }
 323
 324         return 0;
 325
 326 out_pm:
 327         nouveau_pm_fini(dev);
 328         nouveau_backlight_exit(dev);
 329         nouveau_display_destroy(dev);
 330 out_irq:
 331         nouveau_irq_fini(dev);
 332 out_bios:
 333         nouveau_bios_takedown(dev);
 334 out_display_early:
 335         engine->display.late_takedown(dev);
 336 out:
 337         vga_switcheroo_unregister_client(dev->pdev);
 338         vga_client_register(dev->pdev, NULL, NULL, NULL);
 339         return ret;
 340 }
 341
 342 static void nouveau_card_takedown(struct drm_device *dev)
 343 {
 344         struct drm_nouveau_private *dev_priv = dev->dev_private;
 345         struct nouveau_engine *engine = &dev_priv->engine;
 346
 347         if (dev->mode_config.num_crtc)
 348                 nouveau_display_fini(dev);
 349
 350         nouveau_pm_fini(dev);
 351         nouveau_backlight_exit(dev);
 352         nouveau_display_destroy(dev);
 353
 354         nouveau_bios_takedown(dev);
 355         engine->display.late_takedown(dev);
 356
 357         nouveau_irq_fini(dev);
 358
 359         vga_switcheroo_unregister_client(dev->pdev);
 360         vga_client_register(dev->pdev, NULL, NULL, NULL);
 361 }
 362
 363 /* first module load, setup the mmio/fb mapping */
 364 /* KMS: we need mmio at load time, not when the first drm client opens. */
 365 int nouveau_firstopen(struct drm_device *dev)
 366 {
 367         return 0;
 368 }
 369
 370 /* if we have an OF card, copy vbios to RAMIN */
 371 static void nouveau_OF_copy_vbios_to_ramin(struct drm_device *dev)
 372 {
 373 #if defined(__powerpc__)
 374         int size, i;
 375         const uint32_t *bios;
 376         struct device_node *dn = pci_device_to_OF_node(dev->pdev);
 377         if (!dn) {
 378                 NV_INFO(dev, "Unable to get the OF node\n");
 379                 return;
 380         }
 381
 382         bios = of_get_property(dn, "NVDA,BMP", &size);
 383         if (bios) {
 384                 for (i = 0; i < size; i += 4)
 385                         nv_wi32(dev, i, bios[i/4]);
 386                 NV_INFO(dev, "OF bios successfully copied (%d bytes)\n", size);
 387         } else {
 388                 NV_INFO(dev, "Unable to get the OF bios\n");
 389         }
 390 #endif
 391 }
 392
 393 int nouveau_load(struct drm_device *dev, unsigned long flags)
 394 {
 395         struct drm_nouveau_private *dev_priv;
 396         uint32_t reg0 = ~0, strap;
 397         int ret;
 398
 399         dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 400         if (!dev_priv) {
 401                 ret = -ENOMEM;
 402                 goto err_out;
 403         }
 404         dev_priv->newpriv = dev->dev_private;
 405         dev->dev_private = dev_priv;
 406         dev_priv->dev = dev;
 407
 408         NV_DEBUG(dev, "vendor: 0x%X device: 0x%X class: 0x%X\n",
 409                  dev->pci_vendor, dev->pci_device, dev->pdev->class);
 410
 411         /* determine chipset and derive architecture from it */
 412         reg0 = nv_rd32(dev, NV03_PMC_BOOT_0);
 413         if ((reg0 & 0x0f000000) > 0) {
 414                 dev_priv->chipset = (reg0 & 0xff00000) >> 20;
 415                 switch (dev_priv->chipset & 0xf0) {
 416                 case 0x10:
 417                 case 0x20:
 418                 case 0x30:
 419                         dev_priv->card_type = dev_priv->chipset & 0xf0;
 420                         break;
 421                 case 0x40:
 422                 case 0x60:
 423                         dev_priv->card_type = NV_40;
 424                         break;
 425                 case 0x50:
 426                 case 0x80:
 427                 case 0x90:
 428                 case 0xa0:
 429                         dev_priv->card_type = NV_50;
 430                         break;
 431                 case 0xc0:
 432                         dev_priv->card_type = NV_C0;
 433                         break;
 434                 case 0xd0:
 435                         dev_priv->card_type = NV_D0;
 436                         break;
 437                 case 0xe0:
 438                         dev_priv->card_type = NV_E0;
 439                         break;
 440                 default:
 441                         break;
 442                 }
 443         } else
 444         if ((reg0 & 0xff00fff0) == 0x20004000) {
 445                 if (reg0 & 0x00f00000)
 446                         dev_priv->chipset = 0x05;
 447                 else
 448                         dev_priv->chipset = 0x04;
 449                 dev_priv->card_type = NV_04;
 450         }
 451
 452         if (!dev_priv->card_type) {
 453                 NV_ERROR(dev, "unsupported chipset 0x%08x\n", reg0);
 454                 ret = -EINVAL;
 455                 goto err_priv;
 456         }
 457
 458         NV_INFO(dev, "Detected an NV%02x generation card (0x%08x)\n",
 459                      dev_priv->card_type, reg0);
 460
 461         /* determine frequency of timing crystal */
 462         strap = nv_rd32(dev, 0x101000);
 463         if ( dev_priv->chipset < 0x17 ||
 464             (dev_priv->chipset >= 0x20 && dev_priv->chipset <= 0x25))
 465                 strap &= 0x00000040;
 466         else
 467                 strap &= 0x00400040;
 468
 469         switch (strap) {
 470         case 0x00000000: dev_priv->crystal = 13500; break;
 471         case 0x00000040: dev_priv->crystal = 14318; break;
 472         case 0x00400000: dev_priv->crystal = 27000; break;
 473         case 0x00400040: dev_priv->crystal = 25000; break;
 474         }
 475
 476         NV_DEBUG(dev, "crystal freq: %dKHz\n", dev_priv->crystal);
 477
 478         nouveau_OF_copy_vbios_to_ramin(dev);
 479
 480         /* For kernel modesetting, init card now and bring up fbcon */
 481         ret = nouveau_card_init(dev);
 482         if (ret)
 483                 goto err_priv;
 484
 485         return 0;
 486
 487 err_priv:
 488         dev->dev_private = dev_priv->newpriv;
 489         kfree(dev_priv);
 490 err_out:
 491         return ret;
 492 }
 493
 494 void nouveau_lastclose(struct drm_device *dev)
 495 {
 496         vga_switcheroo_process_delayed_switch();
 497 }
 498
 499 int nouveau_unload(struct drm_device *dev)
 500 {
 501         struct drm_nouveau_private *dev_priv = dev->dev_private;
 502
 503         nouveau_card_takedown(dev);
 504
 505         dev->dev_private = dev_priv->newpriv;
 506         kfree(dev_priv);
 507         return 0;
 508 }