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_gart_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_VIA 0x1106 /* Via */ 100 101static uint16 via_device_list[] = { 102 0x3022, /* CLE266 Unichrome Pro (CLE3022) */ 103 0x3108, /* K8M800 Unichrome Pro (unknown chiptype) */ 104 0x3122, /* CLE266 Unichrome Pro (CLE3122) */ 105 0x3205, /* KM400 Unichrome (VT3205) */ 106// 0x3344, /* P4M800 Pro (VT3344) */ 107 0x7205, /* KM400 Unichrome (VT7205) */ 108 0 109}; 110 111static struct { 112 uint16 vendor; 113 uint16 *devices; 114} SupportedDevices[] = { 115 {VENDOR_ID_VIA, via_device_list}, 116 {0x0000, NULL} 117}; 118 119static settings current_settings = { // see comments in skel.settings 120 // for driver 121 DRIVER_PREFIX ".accelerant", 122 false, // dumprom 123 // for accelerant 124 0x00000000, // logmask 125 0, // memory 126 true, // usebios 127 true, // hardcursor 128 false, // switchhead 129 false, // force_pci 130 false, // unhide_fw 131 true, // pgm_panel 132}; 133 134static void dumprom (void *rom, uint32 size) 135{ 136 int fd; 137 uint32 cnt; 138 139 fd = open (kUserDirectory "/" DRIVER_PREFIX ".rom", 140 O_WRONLY | O_CREAT, 0666); 141 if (fd < 0) return; 142 143 /* apparantly max. 32kb may be written at once; 144 * the ROM size is a multiple of that anyway. */ 145 for (cnt = 0; (cnt < size); cnt += 32768) 146 write (fd, ((void *)(((uint8 *)rom) + cnt)), 32768); 147 close (fd); 148} 149 150/* return 1 if vblank interrupt has occured */ 151static int caused_vbi(vuint32 * regs) 152{ 153// return (ENG_REG32(RG32_CRTC_INTS) & 0x00000001); 154return 0; 155} 156 157/* clear the vblank interrupt */ 158static void clear_vbi(vuint32 * regs) 159{ 160// ENG_REG32(RG32_CRTC_INTS) = 0x00000001; 161} 162 163static void enable_vbi(vuint32 * regs) 164{ 165 /* clear the vblank interrupt */ 166// ENG_REG32(RG32_CRTC_INTS) = 0x00000001; 167 /* enable nVidia interrupt source vblank */ 168// ENG_REG32(RG32_CRTC_INTE) |= 0x00000001; 169 /* enable nVidia interrupt system hardware (b0-1) */ 170// ENG_REG32(RG32_MAIN_INTE) = 0x00000001; 171} 172 173static void disable_vbi(vuint32 * regs) 174{ 175 /* disable nVidia interrupt source vblank */ 176// ENG_REG32(RG32_CRTC_INTE) &= 0xfffffffe; 177 /* clear the vblank interrupt */ 178// ENG_REG32(RG32_CRTC_INTS) = 0x00000001; 179 /* disable nVidia interrupt system hardware (b0-1) */ 180// ENG_REG32(RG32_MAIN_INTE) = 0x00000000; 181} 182 183/* 184 init_hardware() - Returns B_OK if one is 185 found, otherwise returns B_ERROR so the driver will be unloaded. 186*/ 187status_t 188init_hardware(void) { 189 long pci_index = 0; 190 pci_info pcii; 191 bool found_one = false; 192 193 /* choke if we can't find the PCI bus */ 194 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 195 return B_ERROR; 196 197 /* choke if we can't find the ISA bus */ 198 if (get_module(B_ISA_MODULE_NAME, (module_info **)&isa_bus) != B_OK) 199 { 200 put_module(B_PCI_MODULE_NAME); 201 return B_ERROR; 202 } 203 204 /* while there are more pci devices */ 205 while ((*pci_bus->get_nth_pci_info)(pci_index, &pcii) == B_NO_ERROR) { 206 int vendor = 0; 207 208 /* if we match a supported vendor */ 209 while (SupportedDevices[vendor].vendor) { 210 if (SupportedDevices[vendor].vendor == pcii.vendor_id) { 211 uint16 *devices = SupportedDevices[vendor].devices; 212 /* while there are more supported devices */ 213 while (*devices) { 214 /* if we match a supported device */ 215 if (*devices == pcii.device_id ) { 216 217 found_one = true; 218 goto done; 219 } 220 /* next supported device */ 221 devices++; 222 } 223 } 224 vendor++; 225 } 226 /* next pci_info struct, please */ 227 pci_index++; 228 } 229 230done: 231 /* put away the module manager */ 232 put_module(B_PCI_MODULE_NAME); 233 return (found_one ? B_OK : B_ERROR); 234} 235 236status_t 237init_driver(void) { 238 void *settings_handle; 239 240 // get driver/accelerant settings, apsed 241 settings_handle = load_driver_settings (DRIVER_PREFIX ".settings"); 242 if (settings_handle != NULL) { 243 const char *item; 244 char *end; 245 uint32 value; 246 247 // for driver 248 item = get_driver_parameter (settings_handle, "accelerant", "", ""); 249 if ((strlen (item) > 0) && (strlen (item) < sizeof (current_settings.accelerant) - 1)) { 250 strcpy (current_settings.accelerant, item); 251 } 252 current_settings.dumprom = get_driver_boolean_parameter (settings_handle, "dumprom", false, false); 253 254 // for accelerant 255 item = get_driver_parameter (settings_handle, "logmask", "0x00000000", "0x00000000"); 256 value = strtoul (item, &end, 0); 257 if (*end == '\0') current_settings.logmask = value; 258 259 item = get_driver_parameter (settings_handle, "memory", "0", "0"); 260 value = strtoul (item, &end, 0); 261 if (*end == '\0') current_settings.memory = value; 262 263 current_settings.hardcursor = get_driver_boolean_parameter (settings_handle, "hardcursor", false, false); 264 current_settings.usebios = get_driver_boolean_parameter (settings_handle, "usebios", false, false); 265 current_settings.switchhead = get_driver_boolean_parameter (settings_handle, "switchhead", false, false); 266 current_settings.force_pci = get_driver_boolean_parameter (settings_handle, "force_pci", false, false); 267 current_settings.unhide_fw = get_driver_boolean_parameter (settings_handle, "unhide_fw", false, false); 268 current_settings.pgm_panel = get_driver_boolean_parameter (settings_handle, "pgm_panel", false, false); 269 270 unload_driver_settings (settings_handle); 271 } 272 273 /* get a handle for the pci bus */ 274 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 275 return B_ERROR; 276 277 /* get a handle for the isa bus */ 278 if (get_module(B_ISA_MODULE_NAME, (module_info **)&isa_bus) != B_OK) 279 { 280 put_module(B_PCI_MODULE_NAME); 281 return B_ERROR; 282 } 283 284 /* get a handle for the agp bus if it exists */ 285 get_module(B_AGP_GART_MODULE_NAME, (module_info **)&agp_bus); 286 287 /* driver private data */ 288 pd = (DeviceData *)calloc(1, sizeof(DeviceData)); 289 if (!pd) { 290 if (agp_bus) 291 put_module(B_AGP_GART_MODULE_NAME); 292 put_module(B_ISA_MODULE_NAME); 293 put_module(B_PCI_MODULE_NAME); 294 return B_ERROR; 295 } 296 /* initialize the benaphore */ 297 INIT_BEN(pd->kernel); 298 /* find all of our supported devices */ 299 probe_devices(); 300 return B_OK; 301} 302 303const char ** 304publish_devices(void) { 305 /* return the list of supported devices */ 306 return (const char **)pd->device_names; 307} 308 309device_hooks * 310find_device(const char *name) { 311 int index = 0; 312 while (pd->device_names[index]) { 313 if (strcmp(name, pd->device_names[index]) == 0) 314 return &graphics_device_hooks; 315 index++; 316 } 317 return NULL; 318 319} 320 321void uninit_driver(void) { 322 323 /* free the driver data */ 324 DELETE_BEN(pd->kernel); 325 free(pd); 326 pd = NULL; 327 328 /* put the pci module away */ 329 put_module(B_PCI_MODULE_NAME); 330 put_module(B_ISA_MODULE_NAME); 331 332 /* put the agp module away if it's there */ 333 if (agp_bus) 334 put_module(B_AGP_GART_MODULE_NAME); 335} 336 337static status_t map_device(device_info *di) 338{ 339 char buffer[B_OS_NAME_LENGTH]; /*memory for device name*/ 340 shared_info *si = di->si; 341 uint32 tmpUlong; 342 pci_info *pcii = &(di->pcii); 343 system_info sysinfo; 344 345 /*storage for the physical to virtual table (used for dma buffer)*/ 346// physical_entry physical_memory[2]; 347// #define G400_DMA_BUFFER_SIZE 1024*1024 348 349 /* variables for making copy of ROM */ 350 uint8* rom_temp; 351 area_id rom_area; 352 353 /* Nvidia cards have registers in [0] and framebuffer in [1] */ 354 int registers = 1; 355 int frame_buffer = 0; 356// int pseudo_dma = 2; 357 358 /* enable memory mapped IO, disable VGA I/O - this is defined in the PCI standard */ 359 tmpUlong = get_pci(PCI_command, 2); 360 /* enable PCI access */ 361 tmpUlong |= PCI_command_memory; 362 /* enable busmastering */ 363 tmpUlong |= PCI_command_master; 364 /* disable ISA I/O access */ 365 tmpUlong &= ~PCI_command_io; 366 set_pci(PCI_command, 2, tmpUlong); 367 368 /*work out which version of BeOS is running*/ 369 get_system_info(&sysinfo); 370 if (0)//sysinfo.kernel_build_date[0]=='J')/*FIXME - better ID version*/ 371 { 372 si->use_clone_bugfix = 1; 373 } 374 else 375 { 376 si->use_clone_bugfix = 0; 377 } 378 379 /* work out a name for the register mapping */ 380 sprintf(buffer, DEVICE_FORMAT " regs", 381 di->pcii.vendor_id, di->pcii.device_id, 382 di->pcii.bus, di->pcii.device, di->pcii.function); 383 384 /* get a virtual memory address for the registers*/ 385 si->regs_area = map_physical_memory( 386 buffer, 387 /* WARNING: Nvidia needs to map regs as viewed from PCI space! */ 388 di->pcii.u.h0.base_registers_pci[registers], 389 di->pcii.u.h0.base_register_sizes[registers], 390 B_ANY_KERNEL_ADDRESS, 391 (si->use_clone_bugfix ? B_READ_AREA|B_WRITE_AREA : 0), 392 (void **)&(di->regs)); 393 si->clone_bugfix_regs = (uint32 *) di->regs; 394 395 /* if mapping registers to vmem failed then pass on error */ 396 if (si->regs_area < 0) return si->regs_area; 397 398 /* work out a name for the ROM mapping*/ 399 sprintf(buffer, DEVICE_FORMAT " rom", 400 di->pcii.vendor_id, di->pcii.device_id, 401 di->pcii.bus, di->pcii.device, di->pcii.function); 402 403 /* disable ROM shadowing, we want the guaranteed exact contents of the chip */ 404 /* warning: 405 * don't touch: (confirmed) NV04, NV05, NV05-M64, NV11 all shutoff otherwise. 406 * NV18, NV28 and NV34 keep working. 407 * confirmed NV28 and NV34 to use upper part of shadowed ROM for scratch purposes, 408 * however the actual ROM content (so the used part) is intact (confirmed). */ 409 //set_pci(ENCFG_ROMSHADOW, 4, 0); 410 411 /* get ROM memory mapped base adress - this is defined in the PCI standard */ 412 tmpUlong = get_pci(PCI_rom_base, 4); 413 if (tmpUlong) 414 { 415 /* ROM was assigned an adress, so enable ROM decoding - see PCI standard */ 416 tmpUlong |= 0x00000001; 417 set_pci(PCI_rom_base, 4, tmpUlong); 418 419 rom_area = map_physical_memory( 420 buffer, 421 (void *)di->pcii.u.h0.rom_base_pci, 422 di->pcii.u.h0.rom_size, 423 B_ANY_KERNEL_ADDRESS, 424 B_READ_AREA, 425 (void **)&(rom_temp) 426 ); 427 428 /* check if we got the BIOS signature (might fail on laptops..) */ 429 if (rom_temp[0]!=0x55 || rom_temp[1]!=0xaa) 430 { 431 /* apparantly no ROM is mapped here */ 432 delete_area(rom_area); 433 rom_area = -1; 434 /* force using ISA legacy map as fall-back */ 435 tmpUlong = 0x00000000; 436 } 437 } 438 439 if (!tmpUlong) 440 { 441 /* ROM was not assigned an adress, fetch it from ISA legacy memory map! */ 442 rom_area = map_physical_memory( 443 buffer, 444 (void *)0x000c0000, 445 65536, 446 B_ANY_KERNEL_ADDRESS, 447 B_READ_AREA, 448 (void **)&(rom_temp) 449 ); 450 } 451 452 /* if mapping ROM to vmem failed then clean up and pass on error */ 453 if (rom_area < 0) { 454 delete_area(si->regs_area); 455 si->regs_area = -1; 456 return rom_area; 457 } 458 459 /* dump ROM to file if selected in skel.settings 460 * (ROM always fits in 64Kb: checked TNT1 - FX5950) */ 461 if (current_settings.dumprom) dumprom (rom_temp, 65536); 462 /* make a copy of ROM for future reference */ 463 memcpy (si->rom_mirror, rom_temp, 65536); 464 465 /* disable ROM decoding - this is defined in the PCI standard, and delete the area */ 466 tmpUlong = get_pci(PCI_rom_base, 4); 467 tmpUlong &= 0xfffffffe; 468 set_pci(PCI_rom_base, 4, tmpUlong); 469 delete_area(rom_area); 470 471 /* work out a name for the framebuffer mapping*/ 472 sprintf(buffer, DEVICE_FORMAT " framebuffer", 473 di->pcii.vendor_id, di->pcii.device_id, 474 di->pcii.bus, di->pcii.device, di->pcii.function); 475 476 /* map the framebuffer into vmem, using Write Combining*/ 477 si->fb_area = map_physical_memory( 478 buffer, 479 /* WARNING: Nvidia needs to map framebuffer as viewed from PCI space! */ 480 (void *) di->pcii.u.h0.base_registers_pci[frame_buffer], 481 di->pcii.u.h0.base_register_sizes[frame_buffer], 482 B_ANY_KERNEL_BLOCK_ADDRESS | B_MTR_WC, 483 B_READ_AREA + B_WRITE_AREA, 484 &(si->framebuffer)); 485 486 /*if failed with write combining try again without*/ 487 if (si->fb_area < 0) { 488 si->fb_area = map_physical_memory( 489 buffer, 490 /* WARNING: Nvidia needs to map framebuffer as viewed from PCI space! */ 491 (void *) di->pcii.u.h0.base_registers_pci[frame_buffer], 492 di->pcii.u.h0.base_register_sizes[frame_buffer], 493 B_ANY_KERNEL_BLOCK_ADDRESS, 494 B_READ_AREA + B_WRITE_AREA, 495 &(si->framebuffer)); 496 } 497 498 /* if there was an error, delete our other areas and pass on error*/ 499 if (si->fb_area < 0) 500 { 501 delete_area(si->regs_area); 502 si->regs_area = -1; 503 return si->fb_area; 504 } 505//fixme: retest for card coldstart and PCI/virt_mem mapping!! 506 /* remember the DMA address of the frame buffer for BDirectWindow?? purposes */ 507 si->framebuffer_pci = (void *) di->pcii.u.h0.base_registers_pci[frame_buffer]; 508 509 // remember settings for use here and in accelerant 510 si->settings = current_settings; 511 512 /* in any case, return the result */ 513 return si->fb_area; 514} 515 516static void unmap_device(device_info *di) { 517 shared_info *si = di->si; 518 uint32 tmpUlong; 519 pci_info *pcii = &(di->pcii); 520 521 /* disable memory mapped IO */ 522 tmpUlong = get_pci(PCI_command, 4); 523 tmpUlong &= 0xfffffffc; 524 set_pci(PCI_command, 4, tmpUlong); 525 /* delete the areas */ 526 if (si->regs_area >= 0) delete_area(si->regs_area); 527 if (si->fb_area >= 0) delete_area(si->fb_area); 528 si->regs_area = si->fb_area = -1; 529 si->framebuffer = NULL; 530 di->regs = NULL; 531} 532 533static void probe_devices(void) { 534 uint32 pci_index = 0; 535 uint32 count = 0; 536 device_info *di = pd->di; 537 538 /* while there are more pci devices */ 539 while ((count < MAX_DEVICES) && ((*pci_bus->get_nth_pci_info)(pci_index, &(di->pcii)) == B_NO_ERROR)) { 540 int vendor = 0; 541 542 /* if we match a supported vendor */ 543 while (SupportedDevices[vendor].vendor) { 544 if (SupportedDevices[vendor].vendor == di->pcii.vendor_id) { 545 uint16 *devices = SupportedDevices[vendor].devices; 546 /* while there are more supported devices */ 547 while (*devices) { 548 /* if we match a supported device */ 549 if (*devices == di->pcii.device_id ) { 550 /* publish the device name */ 551 sprintf(di->name, "graphics/" DEVICE_FORMAT, 552 di->pcii.vendor_id, di->pcii.device_id, 553 di->pcii.bus, di->pcii.device, di->pcii.function); 554 555 /* remember the name */ 556 pd->device_names[count] = di->name; 557 /* mark the driver as available for R/W open */ 558 di->is_open = 0; 559 /* mark areas as not yet created */ 560 di->shared_area = -1; 561 /* mark pointer to shared data as invalid */ 562 di->si = NULL; 563 /* inc pointer to device info */ 564 di++; 565 /* inc count */ 566 count++; 567 /* break out of these while loops */ 568 goto next_device; 569 } 570 /* next supported device */ 571 devices++; 572 } 573 } 574 vendor++; 575 } 576next_device: 577 /* next pci_info struct, please */ 578 pci_index++; 579 } 580 /* propagate count */ 581 pd->count = count; 582 /* terminate list of device names with a null pointer */ 583 pd->device_names[pd->count] = NULL; 584} 585 586static uint32 thread_interrupt_work(int32 *flags, vuint32 *regs, shared_info *si) { 587 uint32 handled = B_HANDLED_INTERRUPT; 588 /* release the vblank semaphore */ 589 if (si->vblank >= 0) { 590 int32 blocked; 591 if ((get_sem_count(si->vblank, &blocked) == B_OK) && (blocked < 0)) { 592 release_sem_etc(si->vblank, -blocked, B_DO_NOT_RESCHEDULE); 593 handled = B_INVOKE_SCHEDULER; 594 } 595 } 596 return handled; 597} 598 599static int32 600eng_interrupt(void *data) 601{ 602 int32 handled = B_UNHANDLED_INTERRUPT; 603 device_info *di = (device_info *)data; 604 shared_info *si = di->si; 605 int32 *flags = &(si->flags); 606 vuint32 *regs; 607 608 /* is someone already handling an interrupt for this device? */ 609 if (atomic_or(flags, SKD_HANDLER_INSTALLED) & SKD_HANDLER_INSTALLED) { 610 goto exit0; 611 } 612 /* get regs */ 613 regs = di->regs; 614 615 /* was it a VBI? */ 616 if (caused_vbi(regs)) { 617 /*clear the interrupt*/ 618 clear_vbi(regs); 619 /*release the semaphore*/ 620 handled = thread_interrupt_work(flags, regs, si); 621 } 622 623 /* note that we're not in the handler any more */ 624 atomic_and(flags, ~SKD_HANDLER_INSTALLED); 625 626exit0: 627 return handled; 628} 629 630static status_t open_hook (const char* name, uint32 flags, void** cookie) { 631 int32 index = 0; 632 device_info *di; 633 shared_info *si; 634 thread_id thid; 635 thread_info thinfo; 636 status_t result = B_OK; 637 vuint32 *regs; 638 char shared_name[B_OS_NAME_LENGTH]; 639 640 /* find the device name in the list of devices */ 641 /* we're never passed a name we didn't publish */ 642 while (pd->device_names[index] && (strcmp(name, pd->device_names[index]) != 0)) index++; 643 644 /* for convienience */ 645 di = &(pd->di[index]); 646 647 /* make sure no one else has write access to the common data */ 648 AQUIRE_BEN(pd->kernel); 649 650 /* if it's already open for writing */ 651 if (di->is_open) { 652 /* mark it open another time */ 653 goto mark_as_open; 654 } 655 /* create the shared area */ 656 sprintf(shared_name, DEVICE_FORMAT " shared", 657 di->pcii.vendor_id, di->pcii.device_id, 658 di->pcii.bus, di->pcii.device, di->pcii.function); 659 /* create this area with NO user-space read or write permissions, to prevent accidental dammage */ 660 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); 661 if (di->shared_area < 0) { 662 /* return the error */ 663 result = di->shared_area; 664 goto done; 665 } 666 667 /* save a few dereferences */ 668 si = di->si; 669 670 /* save the vendor and device IDs */ 671 si->vendor_id = di->pcii.vendor_id; 672 si->device_id = di->pcii.device_id; 673 si->revision = di->pcii.revision; 674 si->bus = di->pcii.bus; 675 si->device = di->pcii.device; 676 si->function = di->pcii.function; 677 678 /* device at bus #0, device #0, function #0 holds byte value at byte-index 0xf6 */ 679 si->ps.chip_rev = ((*pci_bus->read_pci_config)(0, 0, 0, 0xf6, 1)); 680 681 /* map the device */ 682 result = map_device(di); 683 if (result < 0) goto free_shared; 684 result = B_OK; 685 686 /* create a semaphore for vertical blank management */ 687 si->vblank = create_sem(0, di->name); 688 if (si->vblank < 0) { 689 result = si->vblank; 690 goto unmap; 691 } 692 693 /* change the owner of the semaphores to the opener's team */ 694 /* this is required because apps can't aquire kernel semaphores */ 695 thid = find_thread(NULL); 696 get_thread_info(thid, &thinfo); 697 set_sem_owner(si->vblank, thinfo.team); 698 699 /* assign local regs pointer for SAMPLExx() macros */ 700 regs = di->regs; 701 702 /* disable and clear any pending interrupts */ 703 disable_vbi(regs); 704 705 /* If there is a valid interrupt line assigned then set up interrupts */ 706 if ((di->pcii.u.h0.interrupt_pin == 0x00) || 707 (di->pcii.u.h0.interrupt_line == 0xff) || /* no IRQ assigned */ 708 (di->pcii.u.h0.interrupt_line <= 0x02)) /* system IRQ assigned */ 709 { 710 /* we are aborting! */ 711 /* Note: the R4 graphics driver kit lacks this statement!! */ 712 result = B_ERROR; 713 /* interrupt does not exist so exit without installing our handler */ 714 goto delete_the_sem; 715 } 716 else 717 { 718 /* otherwise install our interrupt handler */ 719 result = install_io_interrupt_handler(di->pcii.u.h0.interrupt_line, eng_interrupt, (void *)di, 0); 720 /* bail if we couldn't install the handler */ 721 if (result != B_OK) goto delete_the_sem; 722 } 723 724mark_as_open: 725 /* mark the device open */ 726 di->is_open++; 727 728 /* send the cookie to the opener */ 729 *cookie = di; 730 731 goto done; 732 733 734delete_the_sem: 735 delete_sem(si->vblank); 736 737unmap: 738 unmap_device(di); 739 740free_shared: 741 /* clean up our shared area */ 742 delete_area(di->shared_area); 743 di->shared_area = -1; 744 di->si = NULL; 745 746done: 747 /* end of critical section */ 748 RELEASE_BEN(pd->kernel); 749 750 /* all done, return the status */ 751 return result; 752} 753 754/* ---------- 755 read_hook - does nothing, gracefully 756----- */ 757static status_t 758read_hook (void* dev, off_t pos, void* buf, size_t* len) 759{ 760 *len = 0; 761 return B_NOT_ALLOWED; 762} 763 764/* ---------- 765 write_hook - does nothing, gracefully 766----- */ 767static status_t 768write_hook (void* dev, off_t pos, const void* buf, size_t* len) 769{ 770 *len = 0; 771 return B_NOT_ALLOWED; 772} 773 774/* ---------- 775 close_hook - does nothing, gracefully 776----- */ 777static status_t 778close_hook (void* dev) 779{ 780 /* we don't do anything on close: there might be dup'd fd */ 781 return B_NO_ERROR; 782} 783 784/* ----------- 785 free_hook - close down the device 786----------- */ 787static status_t 788free_hook (void* dev) { 789 device_info *di = (device_info *)dev; 790 shared_info *si = di->si; 791 vuint32 *regs = di->regs; 792 793 /* lock the driver */ 794 AQUIRE_BEN(pd->kernel); 795 796 /* if opened multiple times, decrement the open count and exit */ 797 if (di->is_open > 1) 798 goto unlock_and_exit; 799 800 /* disable and clear any pending interrupts */ 801 disable_vbi(regs); 802 803 /* remove interrupt handler */ 804 remove_io_interrupt_handler(di->pcii.u.h0.interrupt_line, eng_interrupt, di); 805 806 /* delete the semaphores, ignoring any errors ('cause the owning team may have died on us) */ 807 delete_sem(si->vblank); 808 si->vblank = -1; 809 810 /* free regs and framebuffer areas */ 811 unmap_device(di); 812 813 /* clean up our shared area */ 814 delete_area(di->shared_area); 815 di->shared_area = -1; 816 di->si = NULL; 817 818unlock_and_exit: 819 /* mark the device available */ 820 di->is_open--; 821 /* unlock the driver */ 822 RELEASE_BEN(pd->kernel); 823 /* all done */ 824 return B_OK; 825} 826 827/* ----------- 828 control_hook - where the real work is done 829----------- */ 830static status_t 831control_hook (void* dev, uint32 msg, void *buf, size_t len) { 832 device_info *di = (device_info *)dev; 833 status_t result = B_DEV_INVALID_IOCTL; 834 uint32 tmpUlong; 835 836 switch (msg) { 837 /* the only PUBLIC ioctl */ 838 case B_GET_ACCELERANT_SIGNATURE: { 839 char *sig = (char *)buf; 840 strcpy(sig, current_settings.accelerant); 841 result = B_OK; 842 } break; 843 844 /* PRIVATE ioctl from here on */ 845 case ENG_GET_PRIVATE_DATA: { 846 eng_get_private_data *gpd = (eng_get_private_data *)buf; 847 if (gpd->magic == VIA_PRIVATE_DATA_MAGIC) { 848 gpd->shared_info_area = di->shared_area; 849 result = B_OK; 850 } 851 } break; 852 case ENG_GET_PCI: { 853 eng_get_set_pci *gsp = (eng_get_set_pci *)buf; 854 if (gsp->magic == VIA_PRIVATE_DATA_MAGIC) { 855 pci_info *pcii = &(di->pcii); 856 gsp->value = get_pci(gsp->offset, gsp->size); 857 result = B_OK; 858 } 859 } break; 860 case ENG_SET_PCI: { 861 eng_get_set_pci *gsp = (eng_get_set_pci *)buf; 862 if (gsp->magic == VIA_PRIVATE_DATA_MAGIC) { 863 pci_info *pcii = &(di->pcii); 864 set_pci(gsp->offset, gsp->size, gsp->value); 865 result = B_OK; 866 } 867 } break; 868 case ENG_DEVICE_NAME: { // apsed 869 eng_device_name *dn = (eng_device_name *)buf; 870 if (dn->magic == VIA_PRIVATE_DATA_MAGIC) { 871 strcpy(dn->name, di->name); 872 result = B_OK; 873 } 874 } break; 875 case ENG_RUN_INTERRUPTS: { 876 eng_set_bool_state *ri = (eng_set_bool_state *)buf; 877 if (ri->magic == VIA_PRIVATE_DATA_MAGIC) { 878 vuint32 *regs = di->regs; 879 if (ri->do_it) { 880 enable_vbi(regs); 881 } else { 882 disable_vbi(regs); 883 } 884 result = B_OK; 885 } 886 } break; 887 case ENG_GET_NTH_AGP_INFO: { 888 eng_nth_agp_info *nai = (eng_nth_agp_info *)buf; 889 if (nai->magic == VIA_PRIVATE_DATA_MAGIC) { 890 nai->exist = false; 891 nai->agp_bus = false; 892 if (agp_bus) { 893 nai->agp_bus = true; 894 if ((*agp_bus->get_nth_agp_info)(nai->index, &(nai->agpi)) == B_NO_ERROR) { 895 nai->exist = true; 896 } 897 } 898 result = B_OK; 899 } 900 } break; 901 case ENG_ENABLE_AGP: { 902 eng_cmd_agp *nca = (eng_cmd_agp *)buf; 903 if (nca->magic == VIA_PRIVATE_DATA_MAGIC) { 904 if (agp_bus) { 905 nca->agp_bus = true; 906 nca->cmd = agp_bus->set_agp_mode(nca->cmd); 907 } else { 908 nca->agp_bus = false; 909 nca->cmd = 0; 910 } 911 result = B_OK; 912 } 913 } break; 914 case ENG_ISA_OUT: { 915 eng_in_out_isa *io_isa = (eng_in_out_isa *)buf; 916 if (io_isa->magic == VIA_PRIVATE_DATA_MAGIC) { 917 pci_info *pcii = &(di->pcii); 918 919 /* lock the driver: 920 * no other graphics card may have ISA I/O enabled when we enter */ 921 AQUIRE_BEN(pd->kernel); 922 923 /* enable ISA I/O access */ 924 tmpUlong = get_pci(PCI_command, 2); 925 tmpUlong |= PCI_command_io; 926 set_pci(PCI_command, 2, tmpUlong); 927 928 if (io_isa->size == 1) 929 isa_bus->write_io_8(io_isa->adress, (uint8)io_isa->data); 930 else 931 isa_bus->write_io_16(io_isa->adress, io_isa->data); 932 result = B_OK; 933 934 /* disable ISA I/O access */ 935 tmpUlong = get_pci(PCI_command, 2); 936 tmpUlong &= ~PCI_command_io; 937 set_pci(PCI_command, 2, tmpUlong); 938 939 /* end of critical section */ 940 RELEASE_BEN(pd->kernel); 941 } 942 } break; 943 case ENG_ISA_IN: { 944 eng_in_out_isa *io_isa = (eng_in_out_isa *)buf; 945 if (io_isa->magic == VIA_PRIVATE_DATA_MAGIC) { 946 pci_info *pcii = &(di->pcii); 947 948 /* lock the driver: 949 * no other graphics card may have ISA I/O enabled when we enter */ 950 AQUIRE_BEN(pd->kernel); 951 952 /* enable ISA I/O access */ 953 tmpUlong = get_pci(PCI_command, 2); 954 tmpUlong |= PCI_command_io; 955 set_pci(PCI_command, 2, tmpUlong); 956 957 if (io_isa->size == 1) 958 io_isa->data = isa_bus->read_io_8(io_isa->adress); 959 else 960 io_isa->data = isa_bus->read_io_16(io_isa->adress); 961 result = B_OK; 962 963 /* disable ISA I/O access */ 964 tmpUlong = get_pci(PCI_command, 2); 965 tmpUlong &= ~PCI_command_io; 966 set_pci(PCI_command, 2, tmpUlong); 967 968 /* end of critical section */ 969 RELEASE_BEN(pd->kernel); 970 } 971 } break; 972 } 973 return result; 974} 975