1/* 2 Copyright 1999, Be Incorporated. All Rights Reserved. 3 This file may be used under the terms of the Be Sample Code License. 4 5 Other authors: 6 Mark Watson; 7 Rudolf Cornelissen 3/2002-4/2006. 8*/ 9 10/* standard kernel driver stuff */ 11#include <KernelExport.h> 12#include <ISA.h> 13#include <PCI.h> 14#include <OS.h> 15#include <directories.h> 16#include <driver_settings.h> 17#include <malloc.h> 18#include <stdlib.h> // for strtoXX 19#include "AGP.h" 20 21/* this is for the standardized portion of the driver API */ 22/* currently only one operation is defined: B_GET_ACCELERANT_SIGNATURE */ 23#include <graphic_driver.h> 24 25/* this is for sprintf() */ 26#include <stdio.h> 27 28/* this is for string compares */ 29#include <string.h> 30 31/* The private interface between the accelerant and the kernel driver. */ 32#include "DriverInterface.h" 33#include "macros.h" 34 35#define get_pci(o, s) (*pci_bus->read_pci_config)(pcii->bus, pcii->device, pcii->function, (o), (s)) 36#define set_pci(o, s, v) (*pci_bus->write_pci_config)(pcii->bus, pcii->device, pcii->function, (o), (s), (v)) 37 38#define MAX_DEVICES 8 39 40#define DEVICE_FORMAT "%04x_%04x_%02x%02x%02x" // apsed 41 42/* Tell the kernel what revision of the driver API we support */ 43int32 api_version = B_CUR_DRIVER_API_VERSION; // apsed, was 2, is 2 in R5 44 45/* these structures are private to the kernel driver */ 46typedef struct device_info device_info; 47 48typedef struct { 49 timer te; /* timer entry for add_timer() */ 50 device_info *di; /* pointer to the owning device */ 51 bigtime_t when_target; /* when we're supposed to wake up */ 52} timer_info; 53 54struct device_info { 55 uint32 is_open; /* a count of how many times the devices has been opened */ 56 area_id shared_area; /* the area shared between the driver and all of the accelerants */ 57 shared_info *si; /* a pointer to the shared area, for convenience */ 58 vuint32 *regs; /* kernel's pointer to memory mapped registers */ 59 pci_info pcii; /* a convenience copy of the pci info for this device */ 60 char name[B_OS_NAME_LENGTH]; /* where we keep the name of the device for publishing and comparing */ 61}; 62 63typedef struct { 64 uint32 count; /* number of devices actually found */ 65 benaphore kernel; /* for serializing opens/closes */ 66 char *device_names[MAX_DEVICES+1]; /* device name pointer storage */ 67 device_info di[MAX_DEVICES]; /* device specific stuff */ 68} DeviceData; 69 70/* prototypes for our private functions */ 71static status_t open_hook (const char* name, uint32 flags, void** cookie); 72static status_t close_hook (void* dev); 73static status_t free_hook (void* dev); 74static status_t read_hook (void* dev, off_t pos, void* buf, size_t* len); 75static status_t write_hook (void* dev, off_t pos, const void* buf, size_t* len); 76static status_t control_hook (void* dev, uint32 msg, void *buf, size_t len); 77static status_t map_device(device_info *di); 78static void unmap_device(device_info *di); 79static void probe_devices(void); 80static int32 eng_interrupt(void *data); 81 82static DeviceData *pd; 83static isa_module_info *isa_bus = NULL; 84static pci_module_info *pci_bus = NULL; 85static agp_module_info *agp_bus = NULL; 86static device_hooks graphics_device_hooks = { 87 open_hook, 88 close_hook, 89 free_hook, 90 control_hook, 91 read_hook, 92 write_hook, 93 NULL, 94 NULL, 95 NULL, 96 NULL 97}; 98 99#define VENDOR_ID_NVIDIA 0x1106 /* Via */ 100 101static uint16 nvidia_device_list[] = { 102 0x3122, /* */ 103 0 104}; 105 106static struct { 107 uint16 vendor; 108 uint16 *devices; 109} SupportedDevices[] = { 110// {VENDOR_ID_NVIDIA, nvidia_device_list}, 111 {0x0000, NULL} 112}; 113 114static settings current_settings = { // see comments in skel.settings 115 // for driver 116 DRIVER_PREFIX ".accelerant", 117 false, // dumprom 118 // for accelerant 119 0x00000000, // logmask 120 0, // memory 121 true, // usebios 122 true, // hardcursor 123 false, // switchhead 124 false, // force_pci 125 false, // unhide_fw 126 true, // pgm_panel 127}; 128 129static void dumprom (void *rom, uint32 size) 130{ 131 int fd; 132 uint32 cnt; 133 134 fd = open (kUserDirectory "/" DRIVER_PREFIX ".rom", 135 O_WRONLY | O_CREAT, 0666); 136 if (fd < 0) return; 137 138 /* apparantly max. 32kb may be written at once; 139 * the ROM size is a multiple of that anyway. */ 140 for (cnt = 0; (cnt < size); cnt += 32768) 141 write (fd, ((void *)(((uint8 *)rom) + cnt)), 32768); 142 close (fd); 143} 144 145/* return 1 if vblank interrupt has occured */ 146static int caused_vbi(vuint32 * regs) 147{ 148// return (ENG_RG32(RG32_CRTC_INTS) & 0x00000001); 149return 0; 150} 151 152/* clear the vblank interrupt */ 153static void clear_vbi(vuint32 * regs) 154{ 155// ENG_RG32(RG32_CRTC_INTS) = 0x00000001; 156} 157 158static void enable_vbi(vuint32 * regs) 159{ 160 /* clear the vblank interrupt */ 161// ENG_RG32(RG32_CRTC_INTS) = 0x00000001; 162 /* enable nVidia interrupt source vblank */ 163// ENG_RG32(RG32_CRTC_INTE) |= 0x00000001; 164 /* enable nVidia interrupt system hardware (b0-1) */ 165// ENG_RG32(RG32_MAIN_INTE) = 0x00000001; 166} 167 168static void disable_vbi(vuint32 * regs) 169{ 170 /* disable nVidia interrupt source vblank */ 171// ENG_RG32(RG32_CRTC_INTE) &= 0xfffffffe; 172 /* clear the vblank interrupt */ 173// ENG_RG32(RG32_CRTC_INTS) = 0x00000001; 174 /* disable nVidia interrupt system hardware (b0-1) */ 175// ENG_RG32(RG32_MAIN_INTE) = 0x00000000; 176} 177 178/* 179 init_hardware() - Returns B_OK if one is 180 found, otherwise returns B_ERROR so the driver will be unloaded. 181*/ 182status_t 183init_hardware(void) { 184 long pci_index = 0; 185 pci_info pcii; 186 bool found_one = false; 187 188 /* choke if we can't find the PCI bus */ 189 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 190 return B_ERROR; 191 192 /* choke if we can't find the ISA bus */ 193 if (get_module(B_ISA_MODULE_NAME, (module_info **)&isa_bus) != B_OK) 194 { 195 put_module(B_PCI_MODULE_NAME); 196 return B_ERROR; 197 } 198 199 /* while there are more pci devices */ 200 while ((*pci_bus->get_nth_pci_info)(pci_index, &pcii) == B_NO_ERROR) { 201 int vendor = 0; 202 203 /* if we match a supported vendor */ 204 while (SupportedDevices[vendor].vendor) { 205 if (SupportedDevices[vendor].vendor == pcii.vendor_id) { 206 uint16 *devices = SupportedDevices[vendor].devices; 207 /* while there are more supported devices */ 208 while (*devices) { 209 /* if we match a supported device */ 210 if (*devices == pcii.device_id ) { 211 212 found_one = true; 213 goto done; 214 } 215 /* next supported device */ 216 devices++; 217 } 218 } 219 vendor++; 220 } 221 /* next pci_info struct, please */ 222 pci_index++; 223 } 224 225done: 226 /* put away the module manager */ 227 put_module(B_PCI_MODULE_NAME); 228 return (found_one ? B_OK : B_ERROR); 229} 230 231status_t 232init_driver(void) { 233 void *settings_handle; 234 235 // get driver/accelerant settings, apsed 236 settings_handle = load_driver_settings (DRIVER_PREFIX ".settings"); 237 if (settings_handle != NULL) { 238 const char *item; 239 char *end; 240 uint32 value; 241 242 // for driver 243 item = get_driver_parameter (settings_handle, "accelerant", "", ""); 244 if ((strlen (item) > 0) && (strlen (item) < sizeof (current_settings.accelerant) - 1)) { 245 strcpy (current_settings.accelerant, item); 246 } 247 current_settings.dumprom = get_driver_boolean_parameter (settings_handle, "dumprom", false, false); 248 249 // for accelerant 250 item = get_driver_parameter (settings_handle, "logmask", "0x00000000", "0x00000000"); 251 value = strtoul (item, &end, 0); 252 if (*end == '\0') current_settings.logmask = value; 253 254 item = get_driver_parameter (settings_handle, "memory", "0", "0"); 255 value = strtoul (item, &end, 0); 256 if (*end == '\0') current_settings.memory = value; 257 258 current_settings.hardcursor = get_driver_boolean_parameter (settings_handle, "hardcursor", false, false); 259 current_settings.usebios = get_driver_boolean_parameter (settings_handle, "usebios", false, false); 260 current_settings.switchhead = get_driver_boolean_parameter (settings_handle, "switchhead", false, false); 261 current_settings.force_pci = get_driver_boolean_parameter (settings_handle, "force_pci", false, false); 262 current_settings.unhide_fw = get_driver_boolean_parameter (settings_handle, "unhide_fw", false, false); 263 current_settings.pgm_panel = get_driver_boolean_parameter (settings_handle, "pgm_panel", false, false); 264 265 unload_driver_settings (settings_handle); 266 } 267 268 /* get a handle for the pci bus */ 269 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 270 return B_ERROR; 271 272 /* get a handle for the isa bus */ 273 if (get_module(B_ISA_MODULE_NAME, (module_info **)&isa_bus) != B_OK) 274 { 275 put_module(B_PCI_MODULE_NAME); 276 return B_ERROR; 277 } 278 279 /* get a handle for the agp bus if it exists */ 280 get_module(B_AGP_MODULE_NAME, (module_info **)&agp_bus); 281 282 /* driver private data */ 283 pd = (DeviceData *)calloc(1, sizeof(DeviceData)); 284 if (!pd) { 285 put_module(B_PCI_MODULE_NAME); 286 return B_ERROR; 287 } 288 /* initialize the benaphore */ 289 INIT_BEN(pd->kernel); 290 /* find all of our supported devices */ 291 probe_devices(); 292 return B_OK; 293} 294 295const char ** 296publish_devices(void) { 297 /* return the list of supported devices */ 298 return (const char **)pd->device_names; 299} 300 301device_hooks * 302find_device(const char *name) { 303 int index = 0; 304 while (pd->device_names[index]) { 305 if (strcmp(name, pd->device_names[index]) == 0) 306 return &graphics_device_hooks; 307 index++; 308 } 309 return NULL; 310 311} 312 313void uninit_driver(void) { 314 315 /* free the driver data */ 316 DELETE_BEN(pd->kernel); 317 free(pd); 318 pd = NULL; 319 320 /* put the pci module away */ 321 put_module(B_PCI_MODULE_NAME); 322 put_module(B_ISA_MODULE_NAME); 323 324 /* put the agp module away if it's there */ 325 if (agp_bus) put_module(B_AGP_MODULE_NAME); 326} 327 328static status_t map_device(device_info *di) 329{ 330 char buffer[B_OS_NAME_LENGTH]; /*memory for device name*/ 331 shared_info *si = di->si; 332 uint32 tmpUlong; 333 pci_info *pcii = &(di->pcii); 334 system_info sysinfo; 335 336 /*storage for the physical to virtual table (used for dma buffer)*/ 337// physical_entry physical_memory[2]; 338// #define G400_DMA_BUFFER_SIZE 1024*1024 339 340 /* variables for making copy of ROM */ 341 uint8* rom_temp; 342 area_id rom_area; 343 344 /* Nvidia cards have registers in [0] and framebuffer in [1] */ 345 int registers = 1; 346 int frame_buffer = 0; 347// int pseudo_dma = 2; 348 349 /* enable memory mapped IO, disable VGA I/O - this is defined in the PCI standard */ 350 tmpUlong = get_pci(PCI_command, 2); 351 /* enable PCI access */ 352 tmpUlong |= PCI_command_memory; 353 /* enable busmastering */ 354 tmpUlong |= PCI_command_master; 355 /* disable ISA I/O access */ 356 tmpUlong &= ~PCI_command_io; 357 set_pci(PCI_command, 2, tmpUlong); 358 359 /*work out which version of BeOS is running*/ 360 get_system_info(&sysinfo); 361 if (0)//sysinfo.kernel_build_date[0]=='J')/*FIXME - better ID version*/ 362 { 363 si->use_clone_bugfix = 1; 364 } 365 else 366 { 367 si->use_clone_bugfix = 0; 368 } 369 370 /* work out a name for the register mapping */ 371 sprintf(buffer, DEVICE_FORMAT " regs", 372 di->pcii.vendor_id, di->pcii.device_id, 373 di->pcii.bus, di->pcii.device, di->pcii.function); 374 375 /* get a virtual memory address for the registers*/ 376 si->regs_area = map_physical_memory( 377 buffer, 378 /* WARNING: Nvidia needs to map regs as viewed from PCI space! */ 379 di->pcii.u.h0.base_registers_pci[registers], 380 di->pcii.u.h0.base_register_sizes[registers], 381 B_ANY_KERNEL_ADDRESS, 382 (si->use_clone_bugfix ? B_READ_AREA|B_WRITE_AREA : 0), 383 (void **)&(di->regs)); 384 si->clone_bugfix_regs = (uint32 *) di->regs; 385 386 /* if mapping registers to vmem failed then pass on error */ 387 if (si->regs_area < 0) return si->regs_area; 388 389 /* work out a name for the ROM mapping*/ 390 sprintf(buffer, DEVICE_FORMAT " rom", 391 di->pcii.vendor_id, di->pcii.device_id, 392 di->pcii.bus, di->pcii.device, di->pcii.function); 393 394 /* disable ROM shadowing, we want the guaranteed exact contents of the chip */ 395 /* warning: 396 * don't touch: (confirmed) NV04, NV05, NV05-M64, NV11 all shutoff otherwise. 397 * NV18, NV28 and NV34 keep working. 398 * confirmed NV28 and NV34 to use upper part of shadowed ROM for scratch purposes, 399 * however the actual ROM content (so the used part) is intact (confirmed). */ 400 //set_pci(ENCFG_ROMSHADOW, 4, 0); 401 402 /* get ROM memory mapped base adress - this is defined in the PCI standard */ 403 tmpUlong = get_pci(PCI_rom_base, 4); 404 if (tmpUlong) 405 { 406 /* ROM was assigned an adress, so enable ROM decoding - see PCI standard */ 407 tmpUlong |= 0x00000001; 408 set_pci(PCI_rom_base, 4, tmpUlong); 409 410 rom_area = map_physical_memory( 411 buffer, 412 di->pcii.u.h0.rom_base_pci, 413 di->pcii.u.h0.rom_size, 414 B_ANY_KERNEL_ADDRESS, 415 B_READ_AREA, 416 (void **)&(rom_temp) 417 ); 418 419 /* check if we got the BIOS signature (might fail on laptops..) */ 420 if (rom_temp[0]!=0x55 || rom_temp[1]!=0xaa) 421 { 422 /* apparantly no ROM is mapped here */ 423 delete_area(rom_area); 424 rom_area = -1; 425 /* force using ISA legacy map as fall-back */ 426 tmpUlong = 0x00000000; 427 } 428 } 429 430 if (!tmpUlong) 431 { 432 /* ROM was not assigned an adress, fetch it from ISA legacy memory map! */ 433 rom_area = map_physical_memory( 434 buffer, 435 0x000c0000, 436 65536, 437 B_ANY_KERNEL_ADDRESS, 438 B_READ_AREA, 439 (void **)&(rom_temp) 440 ); 441 } 442 443 /* if mapping ROM to vmem failed then clean up and pass on error */ 444 if (rom_area < 0) { 445 delete_area(si->regs_area); 446 si->regs_area = -1; 447 return rom_area; 448 } 449 450 /* dump ROM to file if selected in skel.settings 451 * (ROM always fits in 64Kb: checked TNT1 - FX5950) */ 452 if (current_settings.dumprom) dumprom (rom_temp, 65536); 453 /* make a copy of ROM for future reference */ 454 memcpy (si->rom_mirror, rom_temp, 65536); 455 456 /* disable ROM decoding - this is defined in the PCI standard, and delete the area */ 457 tmpUlong = get_pci(PCI_rom_base, 4); 458 tmpUlong &= 0xfffffffe; 459 set_pci(PCI_rom_base, 4, tmpUlong); 460 delete_area(rom_area); 461 462 /* work out a name for the framebuffer mapping*/ 463 sprintf(buffer, DEVICE_FORMAT " framebuffer", 464 di->pcii.vendor_id, di->pcii.device_id, 465 di->pcii.bus, di->pcii.device, di->pcii.function); 466 467 /* map the framebuffer into vmem, using Write Combining*/ 468 si->fb_area = map_physical_memory( 469 buffer, 470 /* WARNING: Nvidia needs to map framebuffer as viewed from PCI space! */ 471 di->pcii.u.h0.base_registers_pci[frame_buffer], 472 di->pcii.u.h0.base_register_sizes[frame_buffer], 473 B_ANY_KERNEL_BLOCK_ADDRESS | B_MTR_WC, 474 B_READ_AREA + B_WRITE_AREA, 475 &(si->framebuffer)); 476 477 /*if failed with write combining try again without*/ 478 if (si->fb_area < 0) { 479 si->fb_area = map_physical_memory( 480 buffer, 481 /* WARNING: Nvidia needs to map framebuffer as viewed from PCI space! */ 482 di->pcii.u.h0.base_registers_pci[frame_buffer], 483 di->pcii.u.h0.base_register_sizes[frame_buffer], 484 B_ANY_KERNEL_BLOCK_ADDRESS, 485 B_READ_AREA + B_WRITE_AREA, 486 &(si->framebuffer)); 487 } 488 489 /* if there was an error, delete our other areas and pass on error*/ 490 if (si->fb_area < 0) 491 { 492 delete_area(si->regs_area); 493 si->regs_area = -1; 494 return si->fb_area; 495 } 496//fixme: retest for card coldstart and PCI/virt_mem mapping!! 497 /* remember the DMA address of the frame buffer for BDirectWindow?? purposes */ 498 si->framebuffer_pci = (void *) di->pcii.u.h0.base_registers_pci[frame_buffer]; 499 500 // remember settings for use here and in accelerant 501 si->settings = current_settings; 502 503 /* in any case, return the result */ 504 return si->fb_area; 505} 506 507static void unmap_device(device_info *di) { 508 shared_info *si = di->si; 509 uint32 tmpUlong; 510 pci_info *pcii = &(di->pcii); 511 512 /* disable memory mapped IO */ 513 tmpUlong = get_pci(PCI_command, 4); 514 tmpUlong &= 0xfffffffc; 515 set_pci(PCI_command, 4, tmpUlong); 516 /* delete the areas */ 517 if (si->regs_area >= 0) delete_area(si->regs_area); 518 if (si->fb_area >= 0) delete_area(si->fb_area); 519 si->regs_area = si->fb_area = -1; 520 si->framebuffer = NULL; 521 di->regs = NULL; 522} 523 524static void probe_devices(void) { 525 uint32 pci_index = 0; 526 uint32 count = 0; 527 device_info *di = pd->di; 528 529 /* while there are more pci devices */ 530 while ((count < MAX_DEVICES) && ((*pci_bus->get_nth_pci_info)(pci_index, &(di->pcii)) == B_NO_ERROR)) { 531 int vendor = 0; 532 533 /* if we match a supported vendor */ 534 while (SupportedDevices[vendor].vendor) { 535 if (SupportedDevices[vendor].vendor == di->pcii.vendor_id) { 536 uint16 *devices = SupportedDevices[vendor].devices; 537 /* while there are more supported devices */ 538 while (*devices) { 539 /* if we match a supported device */ 540 if (*devices == di->pcii.device_id ) { 541 /* publish the device name */ 542 sprintf(di->name, "graphics/" DEVICE_FORMAT, 543 di->pcii.vendor_id, di->pcii.device_id, 544 di->pcii.bus, di->pcii.device, di->pcii.function); 545 546 /* remember the name */ 547 pd->device_names[count] = di->name; 548 /* mark the driver as available for R/W open */ 549 di->is_open = 0; 550 /* mark areas as not yet created */ 551 di->shared_area = -1; 552 /* mark pointer to shared data as invalid */ 553 di->si = NULL; 554 /* inc pointer to device info */ 555 di++; 556 /* inc count */ 557 count++; 558 /* break out of these while loops */ 559 goto next_device; 560 } 561 /* next supported device */ 562 devices++; 563 } 564 } 565 vendor++; 566 } 567next_device: 568 /* next pci_info struct, please */ 569 pci_index++; 570 } 571 /* propagate count */ 572 pd->count = count; 573 /* terminate list of device names with a null pointer */ 574 pd->device_names[pd->count] = NULL; 575} 576 577static uint32 thread_interrupt_work(int32 *flags, vuint32 *regs, shared_info *si) { 578 uint32 handled = B_HANDLED_INTERRUPT; 579 /* release the vblank semaphore */ 580 if (si->vblank >= 0) { 581 int32 blocked; 582 if ((get_sem_count(si->vblank, &blocked) == B_OK) && (blocked < 0)) { 583 release_sem_etc(si->vblank, -blocked, B_DO_NOT_RESCHEDULE); 584 handled = B_INVOKE_SCHEDULER; 585 } 586 } 587 return handled; 588} 589 590static int32 591eng_interrupt(void *data) 592{ 593 int32 handled = B_UNHANDLED_INTERRUPT; 594 device_info *di = (device_info *)data; 595 shared_info *si = di->si; 596 int32 *flags = &(si->flags); 597 vuint32 *regs; 598 599 /* is someone already handling an interrupt for this device? */ 600 if (atomic_or(flags, SKD_HANDLER_INSTALLED) & SKD_HANDLER_INSTALLED) { 601 goto exit0; 602 } 603 /* get regs */ 604 regs = di->regs; 605 606 /* was it a VBI? */ 607 if (caused_vbi(regs)) { 608 /*clear the interrupt*/ 609 clear_vbi(regs); 610 /*release the semaphore*/ 611 handled = thread_interrupt_work(flags, regs, si); 612 } 613 614 /* note that we're not in the handler any more */ 615 atomic_and(flags, ~SKD_HANDLER_INSTALLED); 616 617exit0: 618 return handled; 619} 620 621static status_t open_hook (const char* name, uint32 flags, void** cookie) { 622 int32 index = 0; 623 device_info *di; 624 shared_info *si; 625 thread_id thid; 626 thread_info thinfo; 627 status_t result = B_OK; 628 vuint32 *regs; 629 char shared_name[B_OS_NAME_LENGTH]; 630 631 /* find the device name in the list of devices */ 632 /* we're never passed a name we didn't publish */ 633 while (pd->device_names[index] && (strcmp(name, pd->device_names[index]) != 0)) index++; 634 635 /* for convienience */ 636 di = &(pd->di[index]); 637 638 /* make sure no one else has write access to the common data */ 639 AQUIRE_BEN(pd->kernel); 640 641 /* if it's already open for writing */ 642 if (di->is_open) { 643 /* mark it open another time */ 644 goto mark_as_open; 645 } 646 /* create the shared area */ 647 sprintf(shared_name, DEVICE_FORMAT " shared", 648 di->pcii.vendor_id, di->pcii.device_id, 649 di->pcii.bus, di->pcii.device, di->pcii.function); 650 /* create this area with NO user-space read or write permissions, to prevent accidental dammage */ 651 di->shared_area = create_area(shared_name, (void **)&(di->si), B_ANY_KERNEL_ADDRESS, ((sizeof(shared_info) + (B_PAGE_SIZE - 1)) & ~(B_PAGE_SIZE - 1)), B_FULL_LOCK, 0); 652 if (di->shared_area < 0) { 653 /* return the error */ 654 result = di->shared_area; 655 goto done; 656 } 657 658 /* save a few dereferences */ 659 si = di->si; 660 661 /* save the vendor and device IDs */ 662 si->vendor_id = di->pcii.vendor_id; 663 si->device_id = di->pcii.device_id; 664 si->revision = di->pcii.revision; 665 si->bus = di->pcii.bus; 666 si->device = di->pcii.device; 667 si->function = di->pcii.function; 668 669 /* note the amount of system RAM the system BIOS assigned to the card if applicable: 670 * unified memory architecture (UMA) */ 671 switch ((((uint32)(si->device_id)) << 16) | si->vendor_id) 672 { 673 case 0x01a010de: /* Nvidia GeForce2 Integrated GPU */ 674 /* device at bus #0, device #0, function #1 holds value at byte-index 0x7C */ 675 si->ps.memory_size = 1024 * 1024 * 676 (((((*pci_bus->read_pci_config)(0, 0, 1, 0x7c, 4)) & 0x000007c0) >> 6) + 1); 677 /* last 64kB RAM is used for the BIOS (or something else?) */ 678 si->ps.memory_size -= (64 * 1024); 679 break; 680 case 0x01f010de: /* Nvidia GeForce4 MX Integrated GPU */ 681 /* device at bus #0, device #0, function #1 holds value at byte-index 0x84 */ 682 si->ps.memory_size = 1024 * 1024 * 683 (((((*pci_bus->read_pci_config)(0, 0, 1, 0x84, 4)) & 0x000007f0) >> 4) + 1); 684 /* last 64kB RAM is used for the BIOS (or something else?) */ 685 si->ps.memory_size -= (64 * 1024); 686 break; 687 default: 688 /* all other cards have own RAM: the amount of which is determined in the 689 * accelerant. */ 690 break; 691 } 692 693 /* map the device */ 694 result = map_device(di); 695 if (result < 0) goto free_shared; 696 result = B_OK; 697 698 /* create a semaphore for vertical blank management */ 699 si->vblank = create_sem(0, di->name); 700 if (si->vblank < 0) { 701 result = si->vblank; 702 goto unmap; 703 } 704 705 /* change the owner of the semaphores to the opener's team */ 706 /* this is required because apps can't aquire kernel semaphores */ 707 thid = find_thread(NULL); 708 get_thread_info(thid, &thinfo); 709 set_sem_owner(si->vblank, thinfo.team); 710 711 /* assign local regs pointer for SAMPLExx() macros */ 712 regs = di->regs; 713 714 /* disable and clear any pending interrupts */ 715 disable_vbi(regs); 716 717 /* If there is a valid interrupt line assigned then set up interrupts */ 718 if ((di->pcii.u.h0.interrupt_pin == 0x00) || 719 (di->pcii.u.h0.interrupt_line == 0xff) || /* no IRQ assigned */ 720 (di->pcii.u.h0.interrupt_line <= 0x02)) /* system IRQ assigned */ 721 { 722 /* we are aborting! */ 723 /* Note: the R4 graphics driver kit lacks this statement!! */ 724 result = B_ERROR; 725 /* interrupt does not exist so exit without installing our handler */ 726 goto delete_the_sem; 727 } 728 else 729 { 730 /* otherwise install our interrupt handler */ 731 result = install_io_interrupt_handler(di->pcii.u.h0.interrupt_line, eng_interrupt, (void *)di, 0); 732 /* bail if we couldn't install the handler */ 733 if (result != B_OK) goto delete_the_sem; 734 } 735 736mark_as_open: 737 /* mark the device open */ 738 di->is_open++; 739 740 /* send the cookie to the opener */ 741 *cookie = di; 742 743 goto done; 744 745 746delete_the_sem: 747 delete_sem(si->vblank); 748 749unmap: 750 unmap_device(di); 751 752free_shared: 753 /* clean up our shared area */ 754 delete_area(di->shared_area); 755 di->shared_area = -1; 756 di->si = NULL; 757 758done: 759 /* end of critical section */ 760 RELEASE_BEN(pd->kernel); 761 762 /* all done, return the status */ 763 return result; 764} 765 766/* ---------- 767 read_hook - does nothing, gracefully 768----- */ 769static status_t 770read_hook (void* dev, off_t pos, void* buf, size_t* len) 771{ 772 *len = 0; 773 return B_NOT_ALLOWED; 774} 775 776/* ---------- 777 write_hook - does nothing, gracefully 778----- */ 779static status_t 780write_hook (void* dev, off_t pos, const void* buf, size_t* len) 781{ 782 *len = 0; 783 return B_NOT_ALLOWED; 784} 785 786/* ---------- 787 close_hook - does nothing, gracefully 788----- */ 789static status_t 790close_hook (void* dev) 791{ 792 /* we don't do anything on close: there might be dup'd fd */ 793 return B_NO_ERROR; 794} 795 796/* ----------- 797 free_hook - close down the device 798----------- */ 799static status_t 800free_hook (void* dev) { 801 device_info *di = (device_info *)dev; 802 shared_info *si = di->si; 803 vuint32 *regs = di->regs; 804 805 /* lock the driver */ 806 AQUIRE_BEN(pd->kernel); 807 808 /* if opened multiple times, decrement the open count and exit */ 809 if (di->is_open > 1) 810 goto unlock_and_exit; 811 812 /* disable and clear any pending interrupts */ 813 disable_vbi(regs); 814 815 /* remove interrupt handler */ 816 remove_io_interrupt_handler(di->pcii.u.h0.interrupt_line, eng_interrupt, di); 817 818 /* delete the semaphores, ignoring any errors ('cause the owning team may have died on us) */ 819 delete_sem(si->vblank); 820 si->vblank = -1; 821 822 /* free regs and framebuffer areas */ 823 unmap_device(di); 824 825 /* clean up our shared area */ 826 delete_area(di->shared_area); 827 di->shared_area = -1; 828 di->si = NULL; 829 830unlock_and_exit: 831 /* mark the device available */ 832 di->is_open--; 833 /* unlock the driver */ 834 RELEASE_BEN(pd->kernel); 835 /* all done */ 836 return B_OK; 837} 838 839/* ----------- 840 control_hook - where the real work is done 841----------- */ 842static status_t 843control_hook (void* dev, uint32 msg, void *buf, size_t len) { 844 device_info *di = (device_info *)dev; 845 status_t result = B_DEV_INVALID_IOCTL; 846 uint32 tmpUlong; 847 848 switch (msg) { 849 /* the only PUBLIC ioctl */ 850 case B_GET_ACCELERANT_SIGNATURE: { 851 char *sig = (char *)buf; 852 strcpy(sig, current_settings.accelerant); 853 result = B_OK; 854 } break; 855 856 /* PRIVATE ioctl from here on */ 857 case ENG_GET_PRIVATE_DATA: { 858 eng_get_private_data *gpd = (eng_get_private_data *)buf; 859 if (gpd->magic == SKEL_PRIVATE_DATA_MAGIC) { 860 gpd->shared_info_area = di->shared_area; 861 result = B_OK; 862 } 863 } break; 864 case ENG_GET_PCI: { 865 eng_get_set_pci *gsp = (eng_get_set_pci *)buf; 866 if (gsp->magic == SKEL_PRIVATE_DATA_MAGIC) { 867 pci_info *pcii = &(di->pcii); 868 gsp->value = get_pci(gsp->offset, gsp->size); 869 result = B_OK; 870 } 871 } break; 872 case ENG_SET_PCI: { 873 eng_get_set_pci *gsp = (eng_get_set_pci *)buf; 874 if (gsp->magic == SKEL_PRIVATE_DATA_MAGIC) { 875 pci_info *pcii = &(di->pcii); 876 set_pci(gsp->offset, gsp->size, gsp->value); 877 result = B_OK; 878 } 879 } break; 880 case ENG_DEVICE_NAME: { // apsed 881 eng_device_name *dn = (eng_device_name *)buf; 882 if (dn->magic == SKEL_PRIVATE_DATA_MAGIC) { 883 strcpy(dn->name, di->name); 884 result = B_OK; 885 } 886 } break; 887 case ENG_RUN_INTERRUPTS: { 888 eng_set_bool_state *ri = (eng_set_bool_state *)buf; 889 if (ri->magic == SKEL_PRIVATE_DATA_MAGIC) { 890 vuint32 *regs = di->regs; 891 if (ri->do_it) { 892 enable_vbi(regs); 893 } else { 894 disable_vbi(regs); 895 } 896 result = B_OK; 897 } 898 } break; 899 case ENG_GET_NTH_AGP_INFO: { 900 eng_nth_agp_info *nai = (eng_nth_agp_info *)buf; 901 if (nai->magic == SKEL_PRIVATE_DATA_MAGIC) { 902 nai->exist = false; 903 nai->agp_bus = false; 904 if (agp_bus) { 905 nai->agp_bus = true; 906 if ((*agp_bus->get_nth_agp_info)(nai->index, &(nai->agpi)) == B_NO_ERROR) { 907 nai->exist = true; 908 } 909 } 910 result = B_OK; 911 } 912 } break; 913 case ENG_ENABLE_AGP: { 914 eng_cmd_agp *nca = (eng_cmd_agp *)buf; 915 if (nca->magic == SKEL_PRIVATE_DATA_MAGIC) { 916 if (agp_bus) { 917 nca->agp_bus = true; 918 (*agp_bus->enable_agp)(&(nca->cmd)); 919 } else { 920 nca->agp_bus = false; 921 nca->cmd = 0; 922 } 923 result = B_OK; 924 } 925 } break; 926 case ENG_ISA_OUT: { 927 eng_in_out_isa *io_isa = (eng_in_out_isa *)buf; 928 if (io_isa->magic == SKEL_PRIVATE_DATA_MAGIC) { 929 pci_info *pcii = &(di->pcii); 930 931 /* lock the driver: 932 * no other graphics card may have ISA I/O enabled when we enter */ 933 AQUIRE_BEN(pd->kernel); 934 935 /* enable ISA I/O access */ 936 tmpUlong = get_pci(PCI_command, 2); 937 tmpUlong |= PCI_command_io; 938 set_pci(PCI_command, 2, tmpUlong); 939 940 if (io_isa->size == 1) 941 isa_bus->write_io_8(io_isa->adress, (uint8)io_isa->data); 942 else 943 isa_bus->write_io_16(io_isa->adress, io_isa->data); 944 result = B_OK; 945 946 /* disable ISA I/O access */ 947 tmpUlong = get_pci(PCI_command, 2); 948 tmpUlong &= ~PCI_command_io; 949 set_pci(PCI_command, 2, tmpUlong); 950 951 /* end of critical section */ 952 RELEASE_BEN(pd->kernel); 953 } 954 } break; 955 case ENG_ISA_IN: { 956 eng_in_out_isa *io_isa = (eng_in_out_isa *)buf; 957 if (io_isa->magic == SKEL_PRIVATE_DATA_MAGIC) { 958 pci_info *pcii = &(di->pcii); 959 960 /* lock the driver: 961 * no other graphics card may have ISA I/O enabled when we enter */ 962 AQUIRE_BEN(pd->kernel); 963 964 /* enable ISA I/O access */ 965 tmpUlong = get_pci(PCI_command, 2); 966 tmpUlong |= PCI_command_io; 967 set_pci(PCI_command, 2, tmpUlong); 968 969 if (io_isa->size == 1) 970 io_isa->data = isa_bus->read_io_8(io_isa->adress); 971 else 972 io_isa->data = isa_bus->read_io_16(io_isa->adress); 973 result = B_OK; 974 975 /* disable ISA I/O access */ 976 tmpUlong = get_pci(PCI_command, 2); 977 tmpUlong &= ~PCI_command_io; 978 set_pci(PCI_command, 2, tmpUlong); 979 980 /* end of critical section */ 981 RELEASE_BEN(pd->kernel); 982 } 983 } break; 984 } 985 return result; 986} 987