drivers/gpu/drm/gma500/psb_drv.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /**************************************************************************
   3  * Copyright (c) 2007-2011, Intel Corporation.
   4  * All Rights Reserved.
   5  * Copyright (c) 2008, Tungsten Graphics, Inc. Cedar Park, TX., USA.
   6  * All Rights Reserved.
   7  *
   8  **************************************************************************/
   9
  10 #include <linux/cpu.h>
  11 #include <linux/module.h>
  12 #include <linux/notifier.h>
  13 #include <linux/pm_runtime.h>
  14 #include <linux/spinlock.h>
  15
  16 #include <asm/set_memory.h>
  17
  18 #include <acpi/video.h>
  19
  20 #include <drm/drm.h>
  21 #include <drm/drm_drv.h>
  22 #include <drm/drm_fb_helper.h>
  23 #include <drm/drm_file.h>
  24 #include <drm/drm_ioctl.h>
  25 #include <drm/drm_irq.h>
  26 #include <drm/drm_pciids.h>
  27 #include <drm/drm_vblank.h>
  28
  29 #include "framebuffer.h"
  30 #include "intel_bios.h"
  31 #include "mid_bios.h"
  32 #include "power.h"
  33 #include "psb_drv.h"
  34 #include "psb_intel_reg.h"
  35 #include "psb_reg.h"
  36
  37 static const struct drm_driver driver;
  38 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
  39
  40 /*
  41  * The table below contains a mapping of the PCI vendor ID and the PCI Device ID
  42  * to the different groups of PowerVR 5-series chip designs
  43  *
  44  * 0x8086 = Intel Corporation
  45  *
  46  * PowerVR SGX535    - Poulsbo    - Intel GMA 500, Intel Atom Z5xx
  47  * PowerVR SGX535    - Moorestown - Intel GMA 600
  48  * PowerVR SGX535    - Oaktrail   - Intel GMA 600, Intel Atom Z6xx, E6xx
  49  * PowerVR SGX545    - Cedartrail - Intel GMA 3600, Intel Atom D2500, N2600
  50  * PowerVR SGX545    - Cedartrail - Intel GMA 3650, Intel Atom D2550, D2700,
  51  *                                  N2800
  52  */
  53 static const struct pci_device_id pciidlist[] = {
  54         { 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
  55         { 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
  56 #if defined(CONFIG_DRM_GMA600)
  57         { 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  58         { 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  59         { 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  60         { 0x8086, 0x4103, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  61         { 0x8086, 0x4104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  62         { 0x8086, 0x4105, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  63         { 0x8086, 0x4106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  64         { 0x8086, 0x4107, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  65         { 0x8086, 0x4108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
  66 #endif
  67 #if defined(CONFIG_DRM_GMA3600)
  68         { 0x8086, 0x0be0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  69         { 0x8086, 0x0be1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  70         { 0x8086, 0x0be2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  71         { 0x8086, 0x0be3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  72         { 0x8086, 0x0be4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  73         { 0x8086, 0x0be5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  74         { 0x8086, 0x0be6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  75         { 0x8086, 0x0be7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  76         { 0x8086, 0x0be8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  77         { 0x8086, 0x0be9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  78         { 0x8086, 0x0bea, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  79         { 0x8086, 0x0beb, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  80         { 0x8086, 0x0bec, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  81         { 0x8086, 0x0bed, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  82         { 0x8086, 0x0bee, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  83         { 0x8086, 0x0bef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
  84 #endif
  85         { 0, }
  86 };
  87 MODULE_DEVICE_TABLE(pci, pciidlist);
  88
  89 /*
  90  * Standard IOCTLs.
  91  */
  92 static const struct drm_ioctl_desc psb_ioctls[] = {
  93 };
  94
  95 static int psb_do_init(struct drm_device *dev)
  96 {
  97         struct drm_psb_private *dev_priv = dev->dev_private;
  98         struct psb_gtt *pg = &dev_priv->gtt;
  99
 100         uint32_t stolen_gtt;
 101
 102         if (pg->mmu_gatt_start & 0x0FFFFFFF) {
 103                 dev_err(dev->dev, "Gatt must be 256M aligned. This is a bug.\n");
 104                 return -EINVAL;
 105         }
 106
 107         stolen_gtt = (pg->stolen_size >> PAGE_SHIFT) * 4;
 108         stolen_gtt = (stolen_gtt + PAGE_SIZE - 1) >> PAGE_SHIFT;
 109         stolen_gtt = (stolen_gtt < pg->gtt_pages) ? stolen_gtt : pg->gtt_pages;
 110
 111         dev_priv->gatt_free_offset = pg->mmu_gatt_start +
 112             (stolen_gtt << PAGE_SHIFT) * 1024;
 113
 114         spin_lock_init(&dev_priv->irqmask_lock);
 115
 116         PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
 117         PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
 118         PSB_RSGX32(PSB_CR_BIF_BANK1);
 119
 120         /* Do not bypass any MMU access, let them pagefault instead */
 121         PSB_WSGX32((PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_MMU_ER_MASK),
 122                    PSB_CR_BIF_CTRL);
 123         PSB_RSGX32(PSB_CR_BIF_CTRL);
 124
 125         psb_spank(dev_priv);
 126
 127         /* mmu_gatt ?? */
 128         PSB_WSGX32(pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
 129         PSB_RSGX32(PSB_CR_BIF_TWOD_REQ_BASE); /* Post */
 130
 131         return 0;
 132 }
 133
 134 static void psb_driver_unload(struct drm_device *dev)
 135 {
 136         struct drm_psb_private *dev_priv = dev->dev_private;
 137
 138         /* TODO: Kill vblank etc here */
 139
 140         if (dev_priv) {
 141                 if (dev_priv->backlight_device)
 142                         gma_backlight_exit(dev);
 143                 psb_modeset_cleanup(dev);
 144
 145                 if (dev_priv->ops->chip_teardown)
 146                         dev_priv->ops->chip_teardown(dev);
 147
 148                 psb_intel_opregion_fini(dev);
 149
 150                 if (dev_priv->pf_pd) {
 151                         psb_mmu_free_pagedir(dev_priv->pf_pd);
 152                         dev_priv->pf_pd = NULL;
 153                 }
 154                 if (dev_priv->mmu) {
 155                         struct psb_gtt *pg = &dev_priv->gtt;
 156
 157                         down_read(&pg->sem);
 158                         psb_mmu_remove_pfn_sequence(
 159                                 psb_mmu_get_default_pd
 160                                 (dev_priv->mmu),
 161                                 pg->mmu_gatt_start,
 162                                 dev_priv->vram_stolen_size >> PAGE_SHIFT);
 163                         up_read(&pg->sem);
 164                         psb_mmu_driver_takedown(dev_priv->mmu);
 165                         dev_priv->mmu = NULL;
 166                 }
 167                 psb_gtt_takedown(dev);
 168                 if (dev_priv->scratch_page) {
 169                         set_pages_wb(dev_priv->scratch_page, 1);
 170                         __free_page(dev_priv->scratch_page);
 171                         dev_priv->scratch_page = NULL;
 172                 }
 173                 if (dev_priv->vdc_reg) {
 174                         iounmap(dev_priv->vdc_reg);
 175                         dev_priv->vdc_reg = NULL;
 176                 }
 177                 if (dev_priv->sgx_reg) {
 178                         iounmap(dev_priv->sgx_reg);
 179                         dev_priv->sgx_reg = NULL;
 180                 }
 181                 if (dev_priv->aux_reg) {
 182                         iounmap(dev_priv->aux_reg);
 183                         dev_priv->aux_reg = NULL;
 184                 }
 185                 pci_dev_put(dev_priv->aux_pdev);
 186                 pci_dev_put(dev_priv->lpc_pdev);
 187
 188                 /* Destroy VBT data */
 189                 psb_intel_destroy_bios(dev);
 190
 191                 kfree(dev_priv);
 192                 dev->dev_private = NULL;
 193         }
 194         gma_power_uninit(dev);
 195 }
 196
 197 static int psb_driver_load(struct drm_device *dev, unsigned long flags)
 198 {
 199         struct pci_dev *pdev = to_pci_dev(dev->dev);
 200         struct drm_psb_private *dev_priv;
 201         unsigned long resource_start, resource_len;
 202         unsigned long irqflags;
 203         int ret = -ENOMEM;
 204         struct drm_connector *connector;
 205         struct gma_encoder *gma_encoder;
 206         struct psb_gtt *pg;
 207
 208         /* allocating and initializing driver private data */
 209         dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 210         if (dev_priv == NULL)
 211                 return -ENOMEM;
 212
 213         dev_priv->ops = (struct psb_ops *)flags;
 214         dev_priv->dev = dev;
 215         dev->dev_private = (void *) dev_priv;
 216
 217         pg = &dev_priv->gtt;
 218
 219         pci_set_master(pdev);
 220
 221         dev_priv->num_pipe = dev_priv->ops->pipes;
 222
 223         resource_start = pci_resource_start(pdev, PSB_MMIO_RESOURCE);
 224
 225         dev_priv->vdc_reg =
 226             ioremap(resource_start + PSB_VDC_OFFSET, PSB_VDC_SIZE);
 227         if (!dev_priv->vdc_reg)
 228                 goto out_err;
 229
 230         dev_priv->sgx_reg = ioremap(resource_start + dev_priv->ops->sgx_offset,
 231                                                         PSB_SGX_SIZE);
 232         if (!dev_priv->sgx_reg)
 233                 goto out_err;
 234
 235         if (IS_MRST(dev)) {
 236                 int domain = pci_domain_nr(pdev->bus);
 237
 238                 dev_priv->aux_pdev =
 239                         pci_get_domain_bus_and_slot(domain, 0,
 240                                                     PCI_DEVFN(3, 0));
 241
 242                 if (dev_priv->aux_pdev) {
 243                         resource_start = pci_resource_start(dev_priv->aux_pdev,
 244                                                             PSB_AUX_RESOURCE);
 245                         resource_len = pci_resource_len(dev_priv->aux_pdev,
 246                                                         PSB_AUX_RESOURCE);
 247                         dev_priv->aux_reg = ioremap(resource_start,
 248                                                             resource_len);
 249                         if (!dev_priv->aux_reg)
 250                                 goto out_err;
 251
 252                         DRM_DEBUG_KMS("Found aux vdc");
 253                 } else {
 254                         /* Couldn't find the aux vdc so map to primary vdc */
 255                         dev_priv->aux_reg = dev_priv->vdc_reg;
 256                         DRM_DEBUG_KMS("Couldn't find aux pci device");
 257                 }
 258                 dev_priv->gmbus_reg = dev_priv->aux_reg;
 259
 260                 dev_priv->lpc_pdev =
 261                         pci_get_domain_bus_and_slot(domain, 0,
 262                                                     PCI_DEVFN(31, 0));
 263                 if (dev_priv->lpc_pdev) {
 264                         pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA,
 265                                 &dev_priv->lpc_gpio_base);
 266                         pci_write_config_dword(dev_priv->lpc_pdev, PSB_LPC_GBA,
 267                                 (u32)dev_priv->lpc_gpio_base | (1L<<31));
 268                         pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA,
 269                                 &dev_priv->lpc_gpio_base);
 270                         dev_priv->lpc_gpio_base &= 0xffc0;
 271                         if (dev_priv->lpc_gpio_base)
 272                                 DRM_DEBUG_KMS("Found LPC GPIO at 0x%04x\n",
 273                                                 dev_priv->lpc_gpio_base);
 274                         else {
 275                                 pci_dev_put(dev_priv->lpc_pdev);
 276                                 dev_priv->lpc_pdev = NULL;
 277                         }
 278                 }
 279         } else {
 280                 dev_priv->gmbus_reg = dev_priv->vdc_reg;
 281         }
 282
 283         psb_intel_opregion_setup(dev);
 284
 285         ret = dev_priv->ops->chip_setup(dev);
 286         if (ret)
 287                 goto out_err;
 288
 289         /* Init OSPM support */
 290         gma_power_init(dev);
 291
 292         ret = -ENOMEM;
 293
 294         dev_priv->scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO);
 295         if (!dev_priv->scratch_page)
 296                 goto out_err;
 297
 298         set_pages_uc(dev_priv->scratch_page, 1);
 299
 300         ret = psb_gtt_init(dev, 0);
 301         if (ret)
 302                 goto out_err;
 303
 304         ret = -ENOMEM;
 305
 306         dev_priv->mmu = psb_mmu_driver_init(dev, 1, 0, 0);
 307         if (!dev_priv->mmu)
 308                 goto out_err;
 309
 310         dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0);
 311         if (!dev_priv->pf_pd)
 312                 goto out_err;
 313
 314         ret = psb_do_init(dev);
 315         if (ret)
 316                 return ret;
 317
 318         /* Add stolen memory to SGX MMU */
 319         down_read(&pg->sem);
 320         ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu),
 321                                           dev_priv->stolen_base >> PAGE_SHIFT,
 322                                           pg->gatt_start,
 323                                           pg->stolen_size >> PAGE_SHIFT, 0);
 324         up_read(&pg->sem);
 325
 326         psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);
 327         psb_mmu_set_pd_context(dev_priv->pf_pd, 1);
 328
 329         PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE);
 330         PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE);
 331
 332         acpi_video_register();
 333
 334         /* Setup vertical blanking handling */
 335         ret = drm_vblank_init(dev, dev_priv->num_pipe);
 336         if (ret)
 337                 goto out_err;
 338
 339         /*
 340          * Install interrupt handlers prior to powering off SGX or else we will
 341          * crash.
 342          */
 343         dev_priv->vdc_irq_mask = 0;
 344         dev_priv->pipestat[0] = 0;
 345         dev_priv->pipestat[1] = 0;
 346         dev_priv->pipestat[2] = 0;
 347         spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags);
 348         PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM);
 349         PSB_WVDC32(0x00000000, PSB_INT_ENABLE_R);
 350         PSB_WVDC32(0xFFFFFFFF, PSB_INT_MASK_R);
 351         spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags);
 352
 353         drm_irq_install(dev, pdev->irq);
 354
 355         dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
 356
 357         psb_modeset_init(dev);
 358         psb_fbdev_init(dev);
 359         drm_kms_helper_poll_init(dev);
 360
 361         /* Only add backlight support if we have LVDS output */
 362         list_for_each_entry(connector, &dev->mode_config.connector_list,
 363                             head) {
 364                 gma_encoder = gma_attached_encoder(connector);
 365
 366                 switch (gma_encoder->type) {
 367                 case INTEL_OUTPUT_LVDS:
 368                 case INTEL_OUTPUT_MIPI:
 369                         ret = gma_backlight_init(dev);
 370                         break;
 371                 }
 372         }
 373
 374         if (ret)
 375                 return ret;
 376         psb_intel_opregion_enable_asle(dev);
 377 #if 0
 378         /* Enable runtime pm at last */
 379         pm_runtime_enable(dev->dev);
 380         pm_runtime_set_active(dev->dev);
 381 #endif
 382         /* Intel drm driver load is done, continue doing pvr load */
 383         return 0;
 384 out_err:
 385         psb_driver_unload(dev);
 386         return ret;
 387 }
 388
 389 static inline void get_brightness(struct backlight_device *bd)
 390 {
 391 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
 392         if (bd) {
 393                 bd->props.brightness = bd->ops->get_brightness(bd);
 394                 backlight_update_status(bd);
 395         }
 396 #endif
 397 }
 398
 399 static long psb_unlocked_ioctl(struct file *filp, unsigned int cmd,
 400                                unsigned long arg)
 401 {
 402         struct drm_file *file_priv = filp->private_data;
 403         struct drm_device *dev = file_priv->minor->dev;
 404         struct drm_psb_private *dev_priv = dev->dev_private;
 405         static unsigned int runtime_allowed;
 406
 407         if (runtime_allowed == 1 && dev_priv->is_lvds_on) {
 408                 runtime_allowed++;
 409                 pm_runtime_allow(dev->dev);
 410                 dev_priv->rpm_enabled = 1;
 411         }
 412         return drm_ioctl(filp, cmd, arg);
 413         /* FIXME: do we need to wrap the other side of this */
 414 }
 415
 416 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 417 {
 418         struct drm_device *dev;
 419         int ret;
 420
 421         ret = pci_enable_device(pdev);
 422         if (ret)
 423                 return ret;
 424
 425         dev = drm_dev_alloc(&driver, &pdev->dev);
 426         if (IS_ERR(dev)) {
 427                 ret = PTR_ERR(dev);
 428                 goto err_pci_disable_device;
 429         }
 430
 431         pci_set_drvdata(pdev, dev);
 432
 433         ret = psb_driver_load(dev, ent->driver_data);
 434         if (ret)
 435                 goto err_drm_dev_put;
 436
 437         ret = drm_dev_register(dev, ent->driver_data);
 438         if (ret)
 439                 goto err_psb_driver_unload;
 440
 441         return 0;
 442
 443 err_psb_driver_unload:
 444         psb_driver_unload(dev);
 445 err_drm_dev_put:
 446         drm_dev_put(dev);
 447 err_pci_disable_device:
 448         pci_disable_device(pdev);
 449         return ret;
 450 }
 451
 452 static void psb_pci_remove(struct pci_dev *pdev)
 453 {
 454         struct drm_device *dev = pci_get_drvdata(pdev);
 455
 456         drm_dev_unregister(dev);
 457         psb_driver_unload(dev);
 458         drm_dev_put(dev);
 459 }
 460
 461 static const struct dev_pm_ops psb_pm_ops = {
 462         .resume = gma_power_resume,
 463         .suspend = gma_power_suspend,
 464         .thaw = gma_power_thaw,
 465         .freeze = gma_power_freeze,
 466         .restore = gma_power_restore,
 467         .runtime_suspend = psb_runtime_suspend,
 468         .runtime_resume = psb_runtime_resume,
 469         .runtime_idle = psb_runtime_idle,
 470 };
 471
 472 static const struct file_operations psb_gem_fops = {
 473         .owner = THIS_MODULE,
 474         .open = drm_open,
 475         .release = drm_release,
 476         .unlocked_ioctl = psb_unlocked_ioctl,
 477         .compat_ioctl = drm_compat_ioctl,
 478         .mmap = drm_gem_mmap,
 479         .poll = drm_poll,
 480         .read = drm_read,
 481 };
 482
 483 static const struct drm_driver driver = {
 484         .driver_features = DRIVER_MODESET | DRIVER_GEM,
 485         .lastclose = drm_fb_helper_lastclose,
 486
 487         .num_ioctls = ARRAY_SIZE(psb_ioctls),
 488         .irq_preinstall = psb_irq_preinstall,
 489         .irq_postinstall = psb_irq_postinstall,
 490         .irq_uninstall = psb_irq_uninstall,
 491         .irq_handler = psb_irq_handler,
 492
 493         .dumb_create = psb_gem_dumb_create,
 494         .ioctls = psb_ioctls,
 495         .fops = &psb_gem_fops,
 496         .name = DRIVER_NAME,
 497         .desc = DRIVER_DESC,
 498         .date = DRIVER_DATE,
 499         .major = DRIVER_MAJOR,
 500         .minor = DRIVER_MINOR,
 501         .patchlevel = DRIVER_PATCHLEVEL
 502 };
 503
 504 static struct pci_driver psb_pci_driver = {
 505         .name = DRIVER_NAME,
 506         .id_table = pciidlist,
 507         .probe = psb_pci_probe,
 508         .remove = psb_pci_remove,
 509         .driver.pm = &psb_pm_ops,
 510 };
 511
 512 static int __init psb_init(void)
 513 {
 514         return pci_register_driver(&psb_pci_driver);
 515 }
 516
 517 static void __exit psb_exit(void)
 518 {
 519         pci_unregister_driver(&psb_pci_driver);
 520 }
 521
 522 late_initcall(psb_init);
 523 module_exit(psb_exit);
 524
 525 MODULE_AUTHOR(DRIVER_AUTHOR);
 526 MODULE_DESCRIPTION(DRIVER_DESC);
 527 MODULE_LICENSE("GPL");