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