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/aperture.h> 11#include <linux/cpu.h> 12#include <linux/module.h> 13#include <linux/notifier.h> 14#include <linux/pm_runtime.h> 15#include <linux/spinlock.h> 16#include <linux/delay.h> 17 18#include <asm/set_memory.h> 19 20#include <acpi/video.h> 21 22#include <drm/drm.h> 23#include <drm/drm_drv.h> 24#include <drm/drm_file.h> 25#include <drm/drm_ioctl.h> 26#include <drm/drm_pciids.h> 27#include <drm/drm_vblank.h> 28 29#include "framebuffer.h" 30#include "gem.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 39static const struct drm_driver driver; 40static 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 */ 55static 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}; 88MODULE_DEVICE_TABLE(pci, pciidlist); 89 90/* 91 * Standard IOCTLs. 92 */ 93static 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 */ 102static 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 126static 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 165static 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 gma_backlight_exit(dev); 172 psb_modeset_cleanup(dev); 173 174 gma_irq_uninstall(dev); 175 176 if (dev_priv->ops->chip_teardown) 177 dev_priv->ops->chip_teardown(dev); 178 179 psb_intel_opregion_fini(dev); 180 181 if (dev_priv->pf_pd) { 182 psb_mmu_free_pagedir(dev_priv->pf_pd); 183 dev_priv->pf_pd = NULL; 184 } 185 if (dev_priv->mmu) { 186 struct psb_gtt *pg = &dev_priv->gtt; 187 188 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 psb_mmu_driver_takedown(dev_priv->mmu); 194 dev_priv->mmu = NULL; 195 } 196 psb_gem_mm_fini(dev); 197 psb_gtt_fini(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 224static void psb_device_release(void *data) 225{ 226 struct drm_device *dev = data; 227 228 psb_driver_unload(dev); 229} 230 231static 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 struct drm_connector_list_iter conn_iter; 238 struct drm_connector *connector; 239 struct gma_encoder *gma_encoder; 240 struct psb_gtt *pg; 241 int ret = -ENOMEM; 242 243 /* initializing driver private data */ 244 245 dev_priv->ops = (struct psb_ops *)flags; 246 247 pg = &dev_priv->gtt; 248 249 pci_set_master(pdev); 250 251 dev_priv->num_pipe = dev_priv->ops->pipes; 252 253 resource_start = pci_resource_start(pdev, PSB_MMIO_RESOURCE); 254 255 dev_priv->vdc_reg = 256 ioremap(resource_start + PSB_VDC_OFFSET, PSB_VDC_SIZE); 257 if (!dev_priv->vdc_reg) 258 goto out_err; 259 260 dev_priv->sgx_reg = ioremap(resource_start + dev_priv->ops->sgx_offset, 261 PSB_SGX_SIZE); 262 if (!dev_priv->sgx_reg) 263 goto out_err; 264 265 if (IS_MRST(dev)) { 266 int domain = pci_domain_nr(pdev->bus); 267 268 dev_priv->aux_pdev = 269 pci_get_domain_bus_and_slot(domain, 0, 270 PCI_DEVFN(3, 0)); 271 272 if (dev_priv->aux_pdev) { 273 resource_start = pci_resource_start(dev_priv->aux_pdev, 274 PSB_AUX_RESOURCE); 275 resource_len = pci_resource_len(dev_priv->aux_pdev, 276 PSB_AUX_RESOURCE); 277 dev_priv->aux_reg = ioremap(resource_start, 278 resource_len); 279 if (!dev_priv->aux_reg) 280 goto out_err; 281 282 DRM_DEBUG_KMS("Found aux vdc"); 283 } else { 284 /* Couldn't find the aux vdc so map to primary vdc */ 285 dev_priv->aux_reg = dev_priv->vdc_reg; 286 DRM_DEBUG_KMS("Couldn't find aux pci device"); 287 } 288 dev_priv->gmbus_reg = dev_priv->aux_reg; 289 290 dev_priv->lpc_pdev = 291 pci_get_domain_bus_and_slot(domain, 0, 292 PCI_DEVFN(31, 0)); 293 if (dev_priv->lpc_pdev) { 294 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA, 295 &dev_priv->lpc_gpio_base); 296 pci_write_config_dword(dev_priv->lpc_pdev, PSB_LPC_GBA, 297 (u32)dev_priv->lpc_gpio_base | (1L<<31)); 298 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA, 299 &dev_priv->lpc_gpio_base); 300 dev_priv->lpc_gpio_base &= 0xffc0; 301 if (dev_priv->lpc_gpio_base) 302 DRM_DEBUG_KMS("Found LPC GPIO at 0x%04x\n", 303 dev_priv->lpc_gpio_base); 304 else { 305 pci_dev_put(dev_priv->lpc_pdev); 306 dev_priv->lpc_pdev = NULL; 307 } 308 } 309 } else { 310 dev_priv->gmbus_reg = dev_priv->vdc_reg; 311 } 312 313 psb_intel_opregion_setup(dev); 314 315 ret = dev_priv->ops->chip_setup(dev); 316 if (ret) 317 goto out_err; 318 319 /* Init OSPM support */ 320 gma_power_init(dev); 321 322 ret = -ENOMEM; 323 324 dev_priv->scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO); 325 if (!dev_priv->scratch_page) 326 goto out_err; 327 328 set_pages_uc(dev_priv->scratch_page, 1); 329 330 ret = psb_gtt_init(dev); 331 if (ret) 332 goto out_err; 333 ret = psb_gem_mm_init(dev); 334 if (ret) 335 goto out_err; 336 337 ret = -ENOMEM; 338 339 dev_priv->mmu = psb_mmu_driver_init(dev, 1, 0, NULL); 340 if (!dev_priv->mmu) 341 goto out_err; 342 343 dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0); 344 if (!dev_priv->pf_pd) 345 goto out_err; 346 347 ret = psb_do_init(dev); 348 if (ret) 349 return ret; 350 351 /* Add stolen memory to SGX MMU */ 352 ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu), 353 dev_priv->stolen_base >> PAGE_SHIFT, 354 pg->gatt_start, 355 pg->stolen_size >> PAGE_SHIFT, 0); 356 357 psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0); 358 psb_mmu_set_pd_context(dev_priv->pf_pd, 1); 359 360 PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE); 361 PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE); 362 363 acpi_video_register(); 364 365 /* Setup vertical blanking handling */ 366 ret = drm_vblank_init(dev, dev_priv->num_pipe); 367 if (ret) 368 goto out_err; 369 370 /* 371 * Install interrupt handlers prior to powering off SGX or else we will 372 * crash. 373 */ 374 dev_priv->vdc_irq_mask = 0; 375 dev_priv->pipestat[0] = 0; 376 dev_priv->pipestat[1] = 0; 377 dev_priv->pipestat[2] = 0; 378 spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags); 379 PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM); 380 PSB_WVDC32(0x00000000, PSB_INT_ENABLE_R); 381 PSB_WVDC32(0xFFFFFFFF, PSB_INT_MASK_R); 382 spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags); 383 384 gma_irq_install(dev); 385 386 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ 387 388 psb_modeset_init(dev); 389 drm_kms_helper_poll_init(dev); 390 391 /* Only add backlight support if we have LVDS or MIPI output */ 392 drm_connector_list_iter_begin(dev, &conn_iter); 393 drm_for_each_connector_iter(connector, &conn_iter) { 394 gma_encoder = gma_attached_encoder(connector); 395 396 if (gma_encoder->type == INTEL_OUTPUT_LVDS || 397 gma_encoder->type == INTEL_OUTPUT_MIPI) { 398 ret = gma_backlight_init(dev); 399 if (ret == 0) 400 acpi_video_register_backlight(); 401 break; 402 } 403 } 404 drm_connector_list_iter_end(&conn_iter); 405 406 if (ret) 407 return ret; 408 psb_intel_opregion_enable_asle(dev); 409 410 return devm_add_action_or_reset(dev->dev, psb_device_release, dev); 411 412out_err: 413 psb_driver_unload(dev); 414 return ret; 415} 416 417/* 418 * Hardware for gma500 is a hybrid device, which both acts as a PCI 419 * device (for legacy vga functionality) but also more like an 420 * integrated display on a SoC where the framebuffer simply 421 * resides in main memory and not in a special PCI bar (that 422 * internally redirects to a stolen range of main memory) like all 423 * other integrated PCI display devices implement it. 424 * 425 * To catch all cases we need to remove conflicting firmware devices 426 * for the stolen system memory and for the VGA functionality. As we 427 * currently cannot easily find the framebuffer's location in stolen 428 * memory, we remove all framebuffers here. 429 * 430 * TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then 431 * we might be able to read the framebuffer range from the 432 * device. 433 */ 434static int gma_remove_conflicting_framebuffers(struct pci_dev *pdev, 435 const struct drm_driver *req_driver) 436{ 437 resource_size_t base = 0; 438 resource_size_t size = U32_MAX; /* 4 GiB HW limit */ 439 const char *name = req_driver->name; 440 int ret; 441 442 ret = aperture_remove_conflicting_devices(base, size, name); 443 if (ret) 444 return ret; 445 446 return __aperture_remove_legacy_vga_devices(pdev); 447} 448 449static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 450{ 451 struct drm_psb_private *dev_priv; 452 struct drm_device *dev; 453 int ret; 454 455 ret = gma_remove_conflicting_framebuffers(pdev, &driver); 456 if (ret) 457 return ret; 458 459 ret = pcim_enable_device(pdev); 460 if (ret) 461 return ret; 462 463 dev_priv = devm_drm_dev_alloc(&pdev->dev, &driver, struct drm_psb_private, dev); 464 if (IS_ERR(dev_priv)) 465 return PTR_ERR(dev_priv); 466 dev = &dev_priv->dev; 467 468 pci_set_drvdata(pdev, dev); 469 470 ret = psb_driver_load(dev, ent->driver_data); 471 if (ret) 472 return ret; 473 474 ret = drm_dev_register(dev, ent->driver_data); 475 if (ret) 476 return ret; 477 478 psb_fbdev_setup(dev_priv); 479 480 return 0; 481} 482 483static void psb_pci_remove(struct pci_dev *pdev) 484{ 485 struct drm_device *dev = pci_get_drvdata(pdev); 486 487 drm_dev_unregister(dev); 488} 489 490static DEFINE_RUNTIME_DEV_PM_OPS(psb_pm_ops, gma_power_suspend, gma_power_resume, NULL); 491 492static const struct file_operations psb_gem_fops = { 493 .owner = THIS_MODULE, 494 .open = drm_open, 495 .release = drm_release, 496 .unlocked_ioctl = drm_ioctl, 497 .compat_ioctl = drm_compat_ioctl, 498 .mmap = drm_gem_mmap, 499 .poll = drm_poll, 500 .read = drm_read, 501}; 502 503static const struct drm_driver driver = { 504 .driver_features = DRIVER_MODESET | DRIVER_GEM, 505 506 .num_ioctls = ARRAY_SIZE(psb_ioctls), 507 508 .dumb_create = psb_gem_dumb_create, 509 .ioctls = psb_ioctls, 510 .fops = &psb_gem_fops, 511 .name = DRIVER_NAME, 512 .desc = DRIVER_DESC, 513 .date = DRIVER_DATE, 514 .major = DRIVER_MAJOR, 515 .minor = DRIVER_MINOR, 516 .patchlevel = DRIVER_PATCHLEVEL 517}; 518 519static struct pci_driver psb_pci_driver = { 520 .name = DRIVER_NAME, 521 .id_table = pciidlist, 522 .probe = psb_pci_probe, 523 .remove = psb_pci_remove, 524 .driver.pm = &psb_pm_ops, 525}; 526 527static int __init psb_init(void) 528{ 529 if (drm_firmware_drivers_only()) 530 return -ENODEV; 531 532 return pci_register_driver(&psb_pci_driver); 533} 534 535static void __exit psb_exit(void) 536{ 537 pci_unregister_driver(&psb_pci_driver); 538} 539 540late_initcall(psb_init); 541module_exit(psb_exit); 542 543MODULE_AUTHOR(DRIVER_AUTHOR); 544MODULE_DESCRIPTION(DRIVER_DESC); 545MODULE_LICENSE("GPL"); 546