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 #include <linux/delay.h> 16 17 #include <asm/set_memory.h> 18 19 #include <acpi/video.h> 20 21 #include <drm/drm.h> 22 #include <drm/drm_aperture.h> 23 #include <drm/drm_drv.h> 24 #include <drm/drm_fb_helper.h> 25 #include <drm/drm_file.h> 26 #include <drm/drm_ioctl.h> 27 #include <drm/drm_pciids.h> 28 #include <drm/drm_vblank.h> 29 30 #include "framebuffer.h" 31 #include "gem.h" 32 #include "intel_bios.h" 33 #include "mid_bios.h" 34 #include "power.h" 35 #include "psb_drv.h" 36 #include "psb_intel_reg.h" 37 #include "psb_irq.h" 38 #include "psb_reg.h" 39 40 static const struct drm_driver driver; 41 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent); 42 43 /* 44 * The table below contains a mapping of the PCI vendor ID and the PCI Device ID 45 * to the different groups of PowerVR 5-series chip designs 46 * 47 * 0x8086 = Intel Corporation 48 * 49 * PowerVR SGX535 - Poulsbo - Intel GMA 500, Intel Atom Z5xx 50 * PowerVR SGX535 - Moorestown - Intel GMA 600 51 * PowerVR SGX535 - Oaktrail - Intel GMA 600, Intel Atom Z6xx, E6xx 52 * PowerVR SGX545 - Cedartrail - Intel GMA 3600, Intel Atom D2500, N2600 53 * PowerVR SGX545 - Cedartrail - Intel GMA 3650, Intel Atom D2550, D2700, 54 * N2800 55 */ 56 static const struct pci_device_id pciidlist[] = { 57 /* Poulsbo */ 58 { 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops }, 59 { 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops }, 60 /* Oak Trail */ 61 { 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 62 { 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 63 { 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 64 { 0x8086, 0x4103, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 65 { 0x8086, 0x4104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 66 { 0x8086, 0x4105, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 67 { 0x8086, 0x4106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 68 { 0x8086, 0x4107, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 69 { 0x8086, 0x4108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops }, 70 /* Cedar Trail */ 71 { 0x8086, 0x0be0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 72 { 0x8086, 0x0be1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 73 { 0x8086, 0x0be2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 74 { 0x8086, 0x0be3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 75 { 0x8086, 0x0be4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 76 { 0x8086, 0x0be5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 77 { 0x8086, 0x0be6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 78 { 0x8086, 0x0be7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 79 { 0x8086, 0x0be8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 80 { 0x8086, 0x0be9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 81 { 0x8086, 0x0bea, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 82 { 0x8086, 0x0beb, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 83 { 0x8086, 0x0bec, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 84 { 0x8086, 0x0bed, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 85 { 0x8086, 0x0bee, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 86 { 0x8086, 0x0bef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops }, 87 { 0, } 88 }; 89 MODULE_DEVICE_TABLE(pci, pciidlist); 90 91 /* 92 * Standard IOCTLs. 93 */ 94 static const struct drm_ioctl_desc psb_ioctls[] = { 95 }; 96 97 /** 98 * psb_spank - reset the 2D engine 99 * @dev_priv: our PSB DRM device 100 * 101 * Soft reset the graphics engine and then reload the necessary registers. 102 */ 103 static void psb_spank(struct drm_psb_private *dev_priv) 104 { 105 PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET | 106 _PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET | 107 _PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET | 108 _PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET); 109 PSB_RSGX32(PSB_CR_SOFT_RESET); 110 111 msleep(1); 112 113 PSB_WSGX32(0, PSB_CR_SOFT_RESET); 114 wmb(); 115 PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT, 116 PSB_CR_BIF_CTRL); 117 wmb(); 118 (void) PSB_RSGX32(PSB_CR_BIF_CTRL); 119 120 msleep(1); 121 PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT, 122 PSB_CR_BIF_CTRL); 123 (void) PSB_RSGX32(PSB_CR_BIF_CTRL); 124 PSB_WSGX32(dev_priv->gtt.gatt_start, PSB_CR_BIF_TWOD_REQ_BASE); 125 } 126 127 static int psb_do_init(struct drm_device *dev) 128 { 129 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 130 struct psb_gtt *pg = &dev_priv->gtt; 131 132 uint32_t stolen_gtt; 133 134 if (pg->mmu_gatt_start & 0x0FFFFFFF) { 135 dev_err(dev->dev, "Gatt must be 256M aligned. This is a bug.\n"); 136 return -EINVAL; 137 } 138 139 stolen_gtt = (pg->stolen_size >> PAGE_SHIFT) * 4; 140 stolen_gtt = (stolen_gtt + PAGE_SIZE - 1) >> PAGE_SHIFT; 141 stolen_gtt = (stolen_gtt < pg->gtt_pages) ? stolen_gtt : pg->gtt_pages; 142 143 dev_priv->gatt_free_offset = pg->mmu_gatt_start + 144 (stolen_gtt << PAGE_SHIFT) * 1024; 145 146 spin_lock_init(&dev_priv->irqmask_lock); 147 148 PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0); 149 PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1); 150 PSB_RSGX32(PSB_CR_BIF_BANK1); 151 152 /* Do not bypass any MMU access, let them pagefault instead */ 153 PSB_WSGX32((PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_MMU_ER_MASK), 154 PSB_CR_BIF_CTRL); 155 PSB_RSGX32(PSB_CR_BIF_CTRL); 156 157 psb_spank(dev_priv); 158 159 /* mmu_gatt ?? */ 160 PSB_WSGX32(pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE); 161 PSB_RSGX32(PSB_CR_BIF_TWOD_REQ_BASE); /* Post */ 162 163 return 0; 164 } 165 166 static void psb_driver_unload(struct drm_device *dev) 167 { 168 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 169 170 /* TODO: Kill vblank etc here */ 171 172 if (dev_priv->backlight_device) 173 gma_backlight_exit(dev); 174 psb_modeset_cleanup(dev); 175 176 gma_irq_uninstall(dev); 177 178 if (dev_priv->ops->chip_teardown) 179 dev_priv->ops->chip_teardown(dev); 180 181 psb_intel_opregion_fini(dev); 182 183 if (dev_priv->pf_pd) { 184 psb_mmu_free_pagedir(dev_priv->pf_pd); 185 dev_priv->pf_pd = NULL; 186 } 187 if (dev_priv->mmu) { 188 struct psb_gtt *pg = &dev_priv->gtt; 189 190 psb_mmu_remove_pfn_sequence( 191 psb_mmu_get_default_pd 192 (dev_priv->mmu), 193 pg->mmu_gatt_start, 194 dev_priv->vram_stolen_size >> PAGE_SHIFT); 195 psb_mmu_driver_takedown(dev_priv->mmu); 196 dev_priv->mmu = NULL; 197 } 198 psb_gem_mm_fini(dev); 199 psb_gtt_fini(dev); 200 if (dev_priv->scratch_page) { 201 set_pages_wb(dev_priv->scratch_page, 1); 202 __free_page(dev_priv->scratch_page); 203 dev_priv->scratch_page = NULL; 204 } 205 if (dev_priv->vdc_reg) { 206 iounmap(dev_priv->vdc_reg); 207 dev_priv->vdc_reg = NULL; 208 } 209 if (dev_priv->sgx_reg) { 210 iounmap(dev_priv->sgx_reg); 211 dev_priv->sgx_reg = NULL; 212 } 213 if (dev_priv->aux_reg) { 214 iounmap(dev_priv->aux_reg); 215 dev_priv->aux_reg = NULL; 216 } 217 pci_dev_put(dev_priv->aux_pdev); 218 pci_dev_put(dev_priv->lpc_pdev); 219 220 /* Destroy VBT data */ 221 psb_intel_destroy_bios(dev); 222 223 gma_power_uninit(dev); 224 } 225 226 static void psb_device_release(void *data) 227 { 228 struct drm_device *dev = data; 229 230 psb_driver_unload(dev); 231 } 232 233 static int psb_driver_load(struct drm_device *dev, unsigned long flags) 234 { 235 struct pci_dev *pdev = to_pci_dev(dev->dev); 236 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 237 unsigned long resource_start, resource_len; 238 unsigned long irqflags; 239 struct drm_connector_list_iter conn_iter; 240 struct drm_connector *connector; 241 struct gma_encoder *gma_encoder; 242 struct psb_gtt *pg; 243 int ret = -ENOMEM; 244 245 /* initializing driver private data */ 246 247 dev_priv->ops = (struct psb_ops *)flags; 248 249 pg = &dev_priv->gtt; 250 251 pci_set_master(pdev); 252 253 dev_priv->num_pipe = dev_priv->ops->pipes; 254 255 resource_start = pci_resource_start(pdev, PSB_MMIO_RESOURCE); 256 257 dev_priv->vdc_reg = 258 ioremap(resource_start + PSB_VDC_OFFSET, PSB_VDC_SIZE); 259 if (!dev_priv->vdc_reg) 260 goto out_err; 261 262 dev_priv->sgx_reg = ioremap(resource_start + dev_priv->ops->sgx_offset, 263 PSB_SGX_SIZE); 264 if (!dev_priv->sgx_reg) 265 goto out_err; 266 267 if (IS_MRST(dev)) { 268 int domain = pci_domain_nr(pdev->bus); 269 270 dev_priv->aux_pdev = 271 pci_get_domain_bus_and_slot(domain, 0, 272 PCI_DEVFN(3, 0)); 273 274 if (dev_priv->aux_pdev) { 275 resource_start = pci_resource_start(dev_priv->aux_pdev, 276 PSB_AUX_RESOURCE); 277 resource_len = pci_resource_len(dev_priv->aux_pdev, 278 PSB_AUX_RESOURCE); 279 dev_priv->aux_reg = ioremap(resource_start, 280 resource_len); 281 if (!dev_priv->aux_reg) 282 goto out_err; 283 284 DRM_DEBUG_KMS("Found aux vdc"); 285 } else { 286 /* Couldn't find the aux vdc so map to primary vdc */ 287 dev_priv->aux_reg = dev_priv->vdc_reg; 288 DRM_DEBUG_KMS("Couldn't find aux pci device"); 289 } 290 dev_priv->gmbus_reg = dev_priv->aux_reg; 291 292 dev_priv->lpc_pdev = 293 pci_get_domain_bus_and_slot(domain, 0, 294 PCI_DEVFN(31, 0)); 295 if (dev_priv->lpc_pdev) { 296 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA, 297 &dev_priv->lpc_gpio_base); 298 pci_write_config_dword(dev_priv->lpc_pdev, PSB_LPC_GBA, 299 (u32)dev_priv->lpc_gpio_base | (1L<<31)); 300 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA, 301 &dev_priv->lpc_gpio_base); 302 dev_priv->lpc_gpio_base &= 0xffc0; 303 if (dev_priv->lpc_gpio_base) 304 DRM_DEBUG_KMS("Found LPC GPIO at 0x%04x\n", 305 dev_priv->lpc_gpio_base); 306 else { 307 pci_dev_put(dev_priv->lpc_pdev); 308 dev_priv->lpc_pdev = NULL; 309 } 310 } 311 } else { 312 dev_priv->gmbus_reg = dev_priv->vdc_reg; 313 } 314 315 psb_intel_opregion_setup(dev); 316 317 ret = dev_priv->ops->chip_setup(dev); 318 if (ret) 319 goto out_err; 320 321 /* Init OSPM support */ 322 gma_power_init(dev); 323 324 ret = -ENOMEM; 325 326 dev_priv->scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO); 327 if (!dev_priv->scratch_page) 328 goto out_err; 329 330 set_pages_uc(dev_priv->scratch_page, 1); 331 332 ret = psb_gtt_init(dev); 333 if (ret) 334 goto out_err; 335 ret = psb_gem_mm_init(dev); 336 if (ret) 337 goto out_err; 338 339 ret = -ENOMEM; 340 341 dev_priv->mmu = psb_mmu_driver_init(dev, 1, 0, NULL); 342 if (!dev_priv->mmu) 343 goto out_err; 344 345 dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0); 346 if (!dev_priv->pf_pd) 347 goto out_err; 348 349 ret = psb_do_init(dev); 350 if (ret) 351 return ret; 352 353 /* Add stolen memory to SGX MMU */ 354 ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu), 355 dev_priv->stolen_base >> PAGE_SHIFT, 356 pg->gatt_start, 357 pg->stolen_size >> PAGE_SHIFT, 0); 358 359 psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0); 360 psb_mmu_set_pd_context(dev_priv->pf_pd, 1); 361 362 PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE); 363 PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE); 364 365 acpi_video_register(); 366 367 /* Setup vertical blanking handling */ 368 ret = drm_vblank_init(dev, dev_priv->num_pipe); 369 if (ret) 370 goto out_err; 371 372 /* 373 * Install interrupt handlers prior to powering off SGX or else we will 374 * crash. 375 */ 376 dev_priv->vdc_irq_mask = 0; 377 dev_priv->pipestat[0] = 0; 378 dev_priv->pipestat[1] = 0; 379 dev_priv->pipestat[2] = 0; 380 spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags); 381 PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM); 382 PSB_WVDC32(0x00000000, PSB_INT_ENABLE_R); 383 PSB_WVDC32(0xFFFFFFFF, PSB_INT_MASK_R); 384 spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags); 385 386 gma_irq_install(dev, pdev->irq); 387 388 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ 389 390 psb_modeset_init(dev); 391 psb_fbdev_init(dev); 392 drm_kms_helper_poll_init(dev); 393 394 /* Only add backlight support if we have LVDS or MIPI output */ 395 drm_connector_list_iter_begin(dev, &conn_iter); 396 drm_for_each_connector_iter(connector, &conn_iter) { 397 gma_encoder = gma_attached_encoder(connector); 398 399 switch (gma_encoder->type) { 400 case INTEL_OUTPUT_LVDS: 401 case INTEL_OUTPUT_MIPI: 402 ret = gma_backlight_init(dev); 403 break; 404 } 405 } 406 drm_connector_list_iter_end(&conn_iter); 407 408 if (ret) 409 return ret; 410 psb_intel_opregion_enable_asle(dev); 411 #if 0 412 /* Enable runtime pm at last */ 413 pm_runtime_enable(dev->dev); 414 pm_runtime_set_active(dev->dev); 415 #endif 416 417 return devm_add_action_or_reset(dev->dev, psb_device_release, dev); 418 419 out_err: 420 psb_driver_unload(dev); 421 return ret; 422 } 423 424 static inline void get_brightness(struct backlight_device *bd) 425 { 426 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE 427 if (bd) { 428 bd->props.brightness = bd->ops->get_brightness(bd); 429 backlight_update_status(bd); 430 } 431 #endif 432 } 433 434 static long psb_unlocked_ioctl(struct file *filp, unsigned int cmd, 435 unsigned long arg) 436 { 437 struct drm_file *file_priv = filp->private_data; 438 struct drm_device *dev = file_priv->minor->dev; 439 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 440 static unsigned int runtime_allowed; 441 442 if (runtime_allowed == 1 && dev_priv->is_lvds_on) { 443 runtime_allowed++; 444 pm_runtime_allow(dev->dev); 445 dev_priv->rpm_enabled = 1; 446 } 447 return drm_ioctl(filp, cmd, arg); 448 /* FIXME: do we need to wrap the other side of this */ 449 } 450 451 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 452 { 453 struct drm_psb_private *dev_priv; 454 struct drm_device *dev; 455 int ret; 456 457 /* 458 * We cannot yet easily find the framebuffer's location in memory. So 459 * remove all framebuffers here. 460 * 461 * TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then we 462 * might be able to read the framebuffer range from the device. 463 */ 464 ret = drm_aperture_remove_framebuffers(true, &driver); 465 if (ret) 466 return ret; 467 468 ret = pcim_enable_device(pdev); 469 if (ret) 470 return ret; 471 472 dev_priv = devm_drm_dev_alloc(&pdev->dev, &driver, struct drm_psb_private, dev); 473 if (IS_ERR(dev_priv)) 474 return PTR_ERR(dev_priv); 475 dev = &dev_priv->dev; 476 477 pci_set_drvdata(pdev, dev); 478 479 ret = psb_driver_load(dev, ent->driver_data); 480 if (ret) 481 return ret; 482 483 ret = drm_dev_register(dev, ent->driver_data); 484 if (ret) 485 return ret; 486 487 return 0; 488 } 489 490 static void psb_pci_remove(struct pci_dev *pdev) 491 { 492 struct drm_device *dev = pci_get_drvdata(pdev); 493 494 drm_dev_unregister(dev); 495 } 496 497 static const struct dev_pm_ops psb_pm_ops = { 498 .resume = gma_power_resume, 499 .suspend = gma_power_suspend, 500 .thaw = gma_power_thaw, 501 .freeze = gma_power_freeze, 502 .restore = gma_power_restore, 503 .runtime_suspend = psb_runtime_suspend, 504 .runtime_resume = psb_runtime_resume, 505 .runtime_idle = psb_runtime_idle, 506 }; 507 508 static const struct file_operations psb_gem_fops = { 509 .owner = THIS_MODULE, 510 .open = drm_open, 511 .release = drm_release, 512 .unlocked_ioctl = psb_unlocked_ioctl, 513 .compat_ioctl = drm_compat_ioctl, 514 .mmap = drm_gem_mmap, 515 .poll = drm_poll, 516 .read = drm_read, 517 }; 518 519 static const struct drm_driver driver = { 520 .driver_features = DRIVER_MODESET | DRIVER_GEM, 521 .lastclose = drm_fb_helper_lastclose, 522 523 .num_ioctls = ARRAY_SIZE(psb_ioctls), 524 525 .dumb_create = psb_gem_dumb_create, 526 .ioctls = psb_ioctls, 527 .fops = &psb_gem_fops, 528 .name = DRIVER_NAME, 529 .desc = DRIVER_DESC, 530 .date = DRIVER_DATE, 531 .major = DRIVER_MAJOR, 532 .minor = DRIVER_MINOR, 533 .patchlevel = DRIVER_PATCHLEVEL 534 }; 535 536 static struct pci_driver psb_pci_driver = { 537 .name = DRIVER_NAME, 538 .id_table = pciidlist, 539 .probe = psb_pci_probe, 540 .remove = psb_pci_remove, 541 .driver.pm = &psb_pm_ops, 542 }; 543 544 static int __init psb_init(void) 545 { 546 if (drm_firmware_drivers_only()) 547 return -ENODEV; 548 549 return pci_register_driver(&psb_pci_driver); 550 } 551 552 static void __exit psb_exit(void) 553 { 554 pci_unregister_driver(&psb_pci_driver); 555 } 556 557 late_initcall(psb_init); 558 module_exit(psb_exit); 559 560 MODULE_AUTHOR(DRIVER_AUTHOR); 561 MODULE_DESCRIPTION(DRIVER_DESC); 562 MODULE_LICENSE("GPL"); 563