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 Modified to work with the Matrox G400 - Mark Watson 6 */ 7 8 /* standard kernel driver stuff */ 9 #include <KernelExport.h> 10 #include <PCI.h> 11 #include <OS.h> 12 #include <driver_settings.h> 13 #include <malloc.h> 14 #include <stdlib.h> // for strtoXX 15 16 /* this is for the standardized portion of the driver API */ 17 /* currently only one operation is defined: B_GET_ACCELERANT_SIGNATURE */ 18 #include <graphic_driver.h> 19 20 /* this is for sprintf() */ 21 #include <stdio.h> 22 23 /* this is for string compares */ 24 #include <string.h> 25 26 /* The private interface between the accelerant and the kernel driver. */ 27 #include "DriverInterface.h" 28 #include "mga_macros.h" 29 30 #define get_pci(o, s) (*pci_bus->read_pci_config)(pcii->bus, pcii->device, pcii->function, (o), (s)) 31 #define set_pci(o, s, v) (*pci_bus->write_pci_config)(pcii->bus, pcii->device, pcii->function, (o), (s), (v)) 32 33 #define MAX_DEVICES 8 34 35 #define DEVICE_FORMAT "%04X_%04X_%02X%02X%02X" // apsed 36 37 /* Tell the kernel what revision of the driver API we support */ 38 int32 api_version = B_CUR_DRIVER_API_VERSION; // apsed, was 2, is 2 in R5 39 40 /* these structures are private to the kernel driver */ 41 typedef struct device_info device_info; 42 43 typedef struct { 44 timer te; /* timer entry for add_timer() */ 45 device_info *di; /* pointer to the owning device */ 46 bigtime_t when_target; /* when we're supposed to wake up */ 47 } timer_info; 48 49 struct device_info { 50 uint32 is_open; /* a count of how many times the devices has been opened */ 51 area_id shared_area; /* the area shared between the driver and all of the accelerants */ 52 shared_info *si; /* a pointer to the shared area, for convenience */ 53 vuint32 *regs; /* kernel's pointer to memory mapped registers */ 54 pci_info pcii; /* a convenience copy of the pci info for this device */ 55 char name[B_OS_NAME_LENGTH]; /* where we keep the name of the device for publishing and comparing */ 56 }; 57 58 typedef struct { 59 uint32 count; /* number of devices actually found */ 60 benaphore kernel; /* for serializing opens/closes */ 61 char *device_names[MAX_DEVICES+1]; /* device name pointer storage */ 62 device_info di[MAX_DEVICES]; /* device specific stuff */ 63 } DeviceData; 64 65 /* prototypes for our private functions */ 66 static status_t open_hook (const char* name, uint32 flags, void** cookie); 67 static status_t close_hook (void* dev); 68 static status_t free_hook (void* dev); 69 static status_t read_hook (void* dev, off_t pos, void* buf, size_t* len); 70 static status_t write_hook (void* dev, off_t pos, const void* buf, size_t* len); 71 static status_t control_hook (void* dev, uint32 msg, void *buf, size_t len); 72 static status_t map_device(device_info *di); 73 static void unmap_device(device_info *di); 74 static void probe_devices(void); 75 static int32 gx00_interrupt(void *data); 76 77 static DeviceData *pd; 78 static pci_module_info *pci_bus; 79 static device_hooks graphics_device_hooks = { 80 open_hook, 81 close_hook, 82 free_hook, 83 control_hook, 84 read_hook, 85 write_hook, 86 NULL, 87 NULL, 88 NULL, 89 NULL 90 }; 91 92 #define VENDOR_ID 0x102b /* Matrox graphics inc. */ 93 94 static uint16 gx00_device_list[] = { 95 0x2527,/*G550AGP*/ 96 0x0525,/*G400AGP*/ 97 0x0520,/*G200PCI*/ 98 0x0521,/*G200AGP*/ 99 0x1000,/*G100PCI*/ 100 0x1001,/*G100AGP*/ 101 0x051F,/*MGA-2164 AGP Millennium 2*/ 102 0x051B,/*MGA-2164 PCI Millennium 2*/ 103 0x051A,/*MGA-1054 PCI Mystic*/ 104 0x0519,/*MGA-2064 PCI Millennium*/ 105 0 106 }; 107 108 static struct { 109 uint16 vendor; 110 uint16 *devices; 111 } SupportedDevices[] = { 112 {VENDOR_ID, gx00_device_list}, 113 {0x0000, NULL} 114 }; 115 116 static settings current_settings = { // see comments in mga.settings 117 // for driver 118 DRIVER_PREFIX ".accelerant", 119 false, // dumprom 120 // for accelerant 121 0x00000000, // logmask 122 0, // memory 123 false, // usebios 124 false, // hardcursor 125 }; 126 127 static void dumprom (void *rom, size_t size) 128 { 129 int fd = open ("/boot/home/" DRIVER_PREFIX ".rom", O_WRONLY | O_CREAT, 0666); 130 if (fd < 0) return; 131 write (fd, rom, size); 132 close (fd); 133 } 134 135 /*return 1, is interrupt has occured*/ 136 int caused_vbi(vuint32 * regs) 137 { 138 return (ACCR(STATUS)&0x20); 139 } 140 141 /*clear the interrupt*/ 142 void clear_vbi(vuint32 * regs) 143 { 144 ACCW(ICLEAR,0x20); 145 } 146 147 void enable_vbi(vuint32 * regs) 148 { 149 ACCW(IEN,ACCR(IEN)|0x20); 150 } 151 152 void disable_vbi(vuint32 * regs) 153 { 154 ACCW(IEN,(ACCR(IEN)&~0x20)); 155 ACCW(ICLEAR,0x20); 156 } 157 158 159 /* 160 init_hardware() - Returns B_OK if one is 161 found, otherwise returns B_ERROR so the driver will be unloaded. 162 */ 163 status_t 164 init_hardware(void) { 165 long pci_index = 0; 166 pci_info pcii; 167 bool found_one = FALSE; 168 169 /* choke if we can't find the PCI bus */ 170 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 171 return B_ERROR; 172 173 /* while there are more pci devices */ 174 while ((*pci_bus->get_nth_pci_info)(pci_index, &pcii) == B_NO_ERROR) { 175 int vendor = 0; 176 177 /* if we match a supported vendor */ 178 while (SupportedDevices[vendor].vendor) { 179 if (SupportedDevices[vendor].vendor == pcii.vendor_id) { 180 uint16 *devices = SupportedDevices[vendor].devices; 181 /* while there are more supported devices */ 182 while (*devices) { 183 /* if we match a supported device */ 184 if (*devices == pcii.device_id ) { 185 186 found_one = TRUE; 187 goto done; 188 } 189 /* next supported device */ 190 devices++; 191 } 192 } 193 vendor++; 194 } 195 /* next pci_info struct, please */ 196 pci_index++; 197 } 198 199 done: 200 /* put away the module manager */ 201 put_module(B_PCI_MODULE_NAME); 202 return (found_one ? B_OK : B_ERROR); 203 } 204 205 status_t 206 init_driver(void) { 207 void *settings_handle; 208 209 // get driver/accelerant settings, apsed 210 settings_handle = load_driver_settings (DRIVER_PREFIX ".settings"); 211 if (settings_handle != NULL) { 212 const char *item; 213 char *end; 214 uint32 value; 215 216 // for driver 217 item = get_driver_parameter (settings_handle, "accelerant", "", ""); 218 if ((strlen (item) > 0) && (strlen (item) < sizeof (current_settings.accelerant) - 1)) { 219 strcpy (current_settings.accelerant, item); 220 } 221 current_settings.dumprom = get_driver_boolean_parameter (settings_handle, "dumprom", false, false); 222 223 // for accelerant 224 item = get_driver_parameter (settings_handle, "logmask", "0x00000000", "0x00000000"); 225 value = strtoul (item, &end, 0); 226 if (*end == '\0') current_settings.logmask = value; 227 228 item = get_driver_parameter (settings_handle, "memory", "0", "0"); 229 value = strtoul (item, &end, 0); 230 if (*end == '\0') current_settings.memory = value; 231 232 current_settings.hardcursor = get_driver_boolean_parameter (settings_handle, "hardcursor", false, false); 233 current_settings.usebios = get_driver_boolean_parameter (settings_handle, "usebios", false, false); 234 235 unload_driver_settings (settings_handle); 236 } 237 238 /* get a handle for the pci bus */ 239 if (get_module(B_PCI_MODULE_NAME, (module_info **)&pci_bus) != B_OK) 240 return B_ERROR; 241 242 /* driver private data */ 243 pd = (DeviceData *)calloc(1, sizeof(DeviceData)); 244 if (!pd) { 245 put_module(B_PCI_MODULE_NAME); 246 return B_ERROR; 247 } 248 /* initialize the benaphore */ 249 INIT_BEN(pd->kernel); 250 /* find all of our supported devices */ 251 probe_devices(); 252 return B_OK; 253 } 254 255 const char ** 256 publish_devices(void) { 257 /* return the list of supported devices */ 258 return (const char **)pd->device_names; 259 } 260 261 device_hooks * 262 find_device(const char *name) { 263 int index = 0; 264 while (pd->device_names[index]) { 265 if (strcmp(name, pd->device_names[index]) == 0) 266 return &graphics_device_hooks; 267 index++; 268 } 269 return NULL; 270 271 } 272 273 void uninit_driver(void) { 274 275 /* free the driver data */ 276 DELETE_BEN(pd->kernel); 277 free(pd); 278 pd = NULL; 279 280 /* put the pci module away */ 281 put_module(B_PCI_MODULE_NAME); 282 } 283 284 static status_t map_device(device_info *di) { 285 /* frame buffer in [0], control regs in [1], pseudo_dma in [2] */ 286 int frame_buffer = 0; 287 int registers = 1; 288 int pseudo_dma = 2; 289 290 char buffer[B_OS_NAME_LENGTH]; /*memory for device name*/ 291 shared_info *si = di->si; 292 uint32 tmpUlong; 293 pci_info *pcii = &(di->pcii); 294 system_info sysinfo; 295 296 /*storage for the physical to virtual table (used for dma buffer)*/ 297 // physical_entry physical_memory[2]; 298 // #define G400_DMA_BUFFER_SIZE 1024*1024 299 300 /*variables for making copy of ROM*/ 301 int i; 302 char * rom_temp; 303 area_id rom_area; 304 305 /* enable memory mapped IO, disable VGA I/O - this is standard*/ 306 tmpUlong = get_pci(PCI_command, 4); 307 tmpUlong |= 0x00000002; 308 tmpUlong &= 0xfffffffe; 309 set_pci(PCI_command, 4, tmpUlong); 310 311 /*work out which version of BeOS is running*/ 312 get_system_info(&sysinfo); 313 if (sysinfo.kernel_build_date[0]=='J')/*FIXME - better ID version*/ 314 { 315 si->use_clone_bugfix = 1; 316 } 317 else 318 { 319 si->use_clone_bugfix = 0; 320 } 321 322 /* work out a name for the register mapping */ 323 sprintf(buffer, DEVICE_FORMAT " regs", 324 di->pcii.vendor_id, di->pcii.device_id, 325 di->pcii.bus, di->pcii.device, di->pcii.function); 326 327 /* get a virtual memory address for the registers*/ 328 si->regs_area = map_physical_memory( 329 buffer, 330 (void *) di->pcii.u.h0.base_registers[registers], 331 di->pcii.u.h0.base_register_sizes[registers], 332 B_ANY_KERNEL_ADDRESS, 333 (si->use_clone_bugfix ? B_READ_AREA|B_WRITE_AREA : 0), 334 (void **)&(di->regs)); 335 si->clone_bugfix_regs = (uint32 *) di->regs; 336 337 /* if mapping registers to vmem failed then pass on error */ 338 if (si->regs_area < 0) return si->regs_area; 339 340 /* work out a name for the ROM mapping*/ 341 sprintf(buffer, DEVICE_FORMAT " rom", 342 di->pcii.vendor_id, di->pcii.device_id, 343 di->pcii.bus, di->pcii.device, di->pcii.function); 344 345 /*place ROM over the fbspace (this is definately safe)*/ 346 tmpUlong = di->pcii.u.h0.base_registers[frame_buffer]; 347 tmpUlong |= 0x00000001; 348 set_pci(PCI_rom_base, 4, tmpUlong); 349 350 rom_area = map_physical_memory( 351 buffer, 352 (void *)di->pcii.u.h0.base_registers[frame_buffer], 353 32768, 354 B_ANY_KERNEL_ADDRESS, 355 B_READ_AREA, 356 (void **)&(rom_temp) 357 ); 358 359 /* if mapping ROM to vmem failed then clean up and pass on error */ 360 if (rom_area < 0) { 361 delete_area(si->regs_area); 362 si->regs_area = -1; 363 return rom_area; 364 } 365 366 /* make a copy of ROM for future reference*/ 367 memcpy (si->rom_mirror, rom_temp, 32768); 368 if (current_settings.dumprom) dumprom (rom_temp, 32768); 369 370 /*disable ROM and delete the area*/ 371 set_pci(PCI_rom_base,4,0); 372 delete_area(rom_area); 373 374 /* work out a name for the pseudo dma mapping*/ 375 sprintf(buffer, DEVICE_FORMAT " pseudodma", 376 di->pcii.vendor_id, di->pcii.device_id, 377 di->pcii.bus, di->pcii.device, di->pcii.function); 378 379 /* map the pseudo dma into vmem (write-only)*/ 380 si->pseudo_dma_area = map_physical_memory( 381 buffer, 382 (void *) di->pcii.u.h0.base_registers[pseudo_dma], 383 di->pcii.u.h0.base_register_sizes[pseudo_dma], 384 B_ANY_KERNEL_ADDRESS, 385 B_WRITE_AREA, 386 &(si->pseudo_dma)); 387 388 /* if there was an error, delete our other areas and pass on error*/ 389 if (si->pseudo_dma_area < 0) { 390 delete_area(si->regs_area); 391 si->regs_area = -1; 392 return si->pseudo_dma_area; 393 } 394 395 /* work out a name for the a dma buffer*/ 396 // sprintf(buffer, DEVICE_FORMAT " dmabuffer", 397 // di->pcii.vendor_id, di->pcii.device_id, 398 // di->pcii.bus, di->pcii.device, di->pcii.function); 399 400 /* create an area for the dma buffer*/ 401 // si->dma_buffer_area = create_area( 402 // buffer, 403 // &si->dma_buffer, 404 // B_ANY_ADDRESS, 405 // G400_DMA_BUFFER_SIZE, 406 // B_FULL_LOCK|B_CONTIGUOUS, 407 // B_READ_AREA|B_WRITE_AREA); 408 409 /* if there was an error, delete our other areas and pass on error*/ 410 // if (si->dma_buffer_area < 0) { 411 // delete_area(si->pseudo_dma_area); 412 // si->pseudo_dma_area = -1; 413 // delete_area(si->regs_area); 414 // si->regs_area = -1; 415 // return si->dma_buffer_area; 416 // } 417 418 /*find where it is in real memory*/ 419 // get_memory_map(si->dma_buffer,4,physical_memory,1); 420 // si->dma_buffer_pci = physical_memory[0].address; /*addr from PCI space*/ 421 422 /* work out a name for the framebuffer mapping*/ 423 sprintf(buffer, DEVICE_FORMAT " framebuffer", 424 di->pcii.vendor_id, di->pcii.device_id, 425 di->pcii.bus, di->pcii.device, di->pcii.function); 426 427 /* map the framebuffer into vmem, using Write Combining*/ 428 si->fb_area = map_physical_memory( 429 buffer, 430 (void *) di->pcii.u.h0.base_registers[frame_buffer], 431 di->pcii.u.h0.base_register_sizes[frame_buffer], 432 B_ANY_KERNEL_BLOCK_ADDRESS | B_MTR_WC, 433 B_READ_AREA + B_WRITE_AREA, 434 &(si->framebuffer)); 435 436 /*if failed with write combining try again without*/ 437 if (si->fb_area < 0) { 438 si->fb_area = map_physical_memory( 439 buffer, 440 (void *) di->pcii.u.h0.base_registers[frame_buffer], 441 di->pcii.u.h0.base_register_sizes[frame_buffer], 442 B_ANY_KERNEL_BLOCK_ADDRESS, 443 B_READ_AREA + B_WRITE_AREA, 444 &(si->framebuffer)); 445 } 446 447 /* if there was an error, delete our other areas and pass on error*/ 448 if (si->fb_area < 0) { 449 delete_area(si->dma_buffer_area); 450 si->dma_buffer_area = -1; 451 delete_area(si->pseudo_dma_area); 452 si->pseudo_dma_area = -1; 453 delete_area(si->regs_area); 454 si->regs_area = -1; 455 return si->fb_area; 456 } 457 /* remember the DMA address of the frame buffer for BDirectWindow?? purposes */ 458 si->framebuffer_pci = (void *) di->pcii.u.h0.base_registers_pci[frame_buffer]; 459 460 // remember settings for use here and in accelerant 461 si->settings = current_settings; 462 463 /* in any case, return the result */ 464 return si->fb_area; 465 } 466 467 static void unmap_device(device_info *di) { 468 shared_info *si = di->si; 469 uint32 tmpUlong; 470 pci_info *pcii = &(di->pcii); 471 472 /* disable memory mapped IO */ 473 tmpUlong = get_pci(PCI_command, 4); 474 tmpUlong &= 0xfffffffc; 475 set_pci(PCI_command, 4, tmpUlong); 476 /* delete the areas */ 477 if (si->regs_area >= 0) delete_area(si->regs_area); 478 if (si->fb_area >= 0) delete_area(si->fb_area); 479 si->regs_area = si->fb_area = -1; 480 si->framebuffer = NULL; 481 di->regs = NULL; 482 } 483 484 static void probe_devices(void) { 485 uint32 pci_index = 0; 486 uint32 count = 0; 487 device_info *di = pd->di; 488 489 /* while there are more pci devices */ 490 while ((count < MAX_DEVICES) && ((*pci_bus->get_nth_pci_info)(pci_index, &(di->pcii)) == B_NO_ERROR)) { 491 int vendor = 0; 492 493 /* if we match a supported vendor */ 494 while (SupportedDevices[vendor].vendor) { 495 if (SupportedDevices[vendor].vendor == di->pcii.vendor_id) { 496 uint16 *devices = SupportedDevices[vendor].devices; 497 /* while there are more supported devices */ 498 while (*devices) { 499 /* if we match a supported device */ 500 if (*devices == di->pcii.device_id ) { 501 /* publish the device name */ 502 sprintf(di->name, "graphics/" DEVICE_FORMAT, 503 di->pcii.vendor_id, di->pcii.device_id, 504 di->pcii.bus, di->pcii.device, di->pcii.function); 505 506 /* remember the name */ 507 pd->device_names[count] = di->name; 508 /* mark the driver as available for R/W open */ 509 di->is_open = 0; 510 /* mark areas as not yet created */ 511 di->shared_area = -1; 512 /* mark pointer to shared data as invalid */ 513 di->si = NULL; 514 /* inc pointer to device info */ 515 di++; 516 /* inc count */ 517 count++; 518 /* break out of these while loops */ 519 goto next_device; 520 } 521 /* next supported device */ 522 devices++; 523 } 524 } 525 vendor++; 526 } 527 next_device: 528 /* next pci_info struct, please */ 529 pci_index++; 530 } 531 /* propagate count */ 532 pd->count = count; 533 /* terminate list of device names with a null pointer */ 534 pd->device_names[pd->count] = NULL; 535 } 536 537 static uint32 thread_interrupt_work(int32 *flags, vuint32 *regs, shared_info *si) { 538 uint32 handled = B_HANDLED_INTERRUPT; 539 /* release the vblank semaphore */ 540 if (si->vblank >= 0) { 541 int32 blocked; 542 if ((get_sem_count(si->vblank, &blocked) == B_OK) && (blocked < 0)) { 543 release_sem_etc(si->vblank, -blocked, B_DO_NOT_RESCHEDULE); 544 handled = B_INVOKE_SCHEDULER; 545 } 546 } 547 return handled; 548 } 549 550 static int32 551 gx00_interrupt(void *data) 552 { 553 int32 handled = B_UNHANDLED_INTERRUPT; 554 device_info *di = (device_info *)data; 555 shared_info *si = di->si; 556 int32 *flags = &(si->flags); 557 vuint32 *regs; 558 559 /* is someone already handling an interrupt for this device? */ 560 if (atomic_or(flags, SKD_HANDLER_INSTALLED) & SKD_HANDLER_INSTALLED) { 561 goto exit0; 562 } 563 /* get regs */ 564 regs = di->regs; 565 566 /* was it a VBI? */ 567 if (caused_vbi(regs)) { 568 /*clear the interrupt*/ 569 clear_vbi(regs); 570 /*release the semaphore*/ 571 handled = thread_interrupt_work(flags, regs, si); 572 } 573 574 /* note that we're not in the handler any more */ 575 atomic_and(flags, ~SKD_HANDLER_INSTALLED); 576 577 exit0: 578 return handled; 579 } 580 581 static status_t open_hook (const char* name, uint32 flags, void** cookie) { 582 int32 index = 0; 583 device_info *di; 584 shared_info *si; 585 thread_id thid; 586 thread_info thinfo; 587 status_t result = B_OK; 588 vuint32 *regs; 589 char shared_name[B_OS_NAME_LENGTH]; 590 591 /* find the device name in the list of devices */ 592 /* we're never passed a name we didn't publish */ 593 while (pd->device_names[index] && (strcmp(name, pd->device_names[index]) != 0)) index++; 594 595 /* for convienience */ 596 di = &(pd->di[index]); 597 598 /* make sure no one else has write access to the common data */ 599 AQUIRE_BEN(pd->kernel); 600 601 /* if it's already open for writing */ 602 if (di->is_open) { 603 /* mark it open another time */ 604 goto mark_as_open; 605 } 606 /* create the shared area */ 607 sprintf(shared_name, DEVICE_FORMAT " shared", 608 di->pcii.vendor_id, di->pcii.device_id, 609 di->pcii.bus, di->pcii.device, di->pcii.function); 610 /* create this area with NO user-space read or write permissions, to prevent accidental dammage */ 611 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); 612 if (di->shared_area < 0) { 613 /* return the error */ 614 result = di->shared_area; 615 goto done; 616 } 617 618 /* save a few dereferences */ 619 si = di->si; 620 621 /* save the vendor and device IDs */ 622 si->vendor_id = di->pcii.vendor_id; 623 si->device_id = di->pcii.device_id; 624 si->revision = di->pcii.revision; 625 626 /* map the device */ 627 result = map_device(di); 628 if (result < 0) goto free_shared; 629 result = B_OK; 630 631 /* create a semaphore for vertical blank management */ 632 si->vblank = create_sem(0, di->name); 633 if (si->vblank < 0) { 634 result = si->vblank; 635 goto unmap; 636 } 637 638 /* change the owner of the semaphores to the opener's team */ 639 /* this is required because apps can't aquire kernel semaphores */ 640 thid = find_thread(NULL); 641 get_thread_info(thid, &thinfo); 642 set_sem_owner(si->vblank, thinfo.team); 643 644 /* assign local regs pointer for SAMPLExx() macros */ 645 regs = di->regs; 646 647 /* disable and clear any pending interrupts */ 648 disable_vbi(regs); 649 650 /* If there is an interrupt line then set up interrupts*/ 651 if ((di->pcii.u.h0.interrupt_pin == 0x00) || (di->pcii.u.h0.interrupt_line == 0xff)){ 652 /*interrupt does not exist so DIE*/ 653 goto delete_the_sem; 654 } else { 655 /* otherwise install our interrupt handler */ 656 result = install_io_interrupt_handler(di->pcii.u.h0.interrupt_line, gx00_interrupt, (void *)di, 0); 657 /* bail if we couldn't install the handler */ 658 if (result != B_OK) goto delete_the_sem; 659 } 660 661 mark_as_open: 662 /* mark the device open */ 663 di->is_open++; 664 665 /* send the cookie to the opener */ 666 *cookie = di; 667 668 goto done; 669 670 671 delete_the_sem: 672 delete_sem(si->vblank); 673 674 unmap: 675 unmap_device(di); 676 677 free_shared: 678 /* clean up our shared area */ 679 delete_area(di->shared_area); 680 di->shared_area = -1; 681 di->si = NULL; 682 683 done: 684 /* end of critical section */ 685 RELEASE_BEN(pd->kernel); 686 687 /* all done, return the status */ 688 return result; 689 } 690 691 /* ---------- 692 read_hook - does nothing, gracefully 693 ----- */ 694 static status_t 695 read_hook (void* dev, off_t pos, void* buf, size_t* len) 696 { 697 *len = 0; 698 return B_NOT_ALLOWED; 699 } 700 701 702 /* ---------- 703 write_hook - does nothing, gracefully 704 ----- */ 705 static status_t 706 write_hook (void* dev, off_t pos, const void* buf, size_t* len) 707 { 708 *len = 0; 709 return B_NOT_ALLOWED; 710 } 711 712 /* ---------- 713 close_hook - does nothing, gracefully 714 ----- */ 715 static status_t 716 close_hook (void* dev) 717 { 718 /* we don't do anything on close: there might be dup'd fd */ 719 return B_NO_ERROR; 720 } 721 722 /* ----------- 723 free_hook - close down the device 724 ----------- */ 725 static status_t 726 free_hook (void* dev) { 727 device_info *di = (device_info *)dev; 728 shared_info *si = di->si; 729 vuint32 *regs = di->regs; 730 731 /* lock the driver */ 732 AQUIRE_BEN(pd->kernel); 733 734 /* if opened multiple times, decrement the open count and exit */ 735 if (di->is_open > 1) 736 goto unlock_and_exit; 737 738 /* disable and clear any pending interrupts */ 739 disable_vbi(regs); 740 741 /* remove interrupt handler */ 742 remove_io_interrupt_handler(di->pcii.u.h0.interrupt_line, gx00_interrupt, di); 743 744 /* delete the semaphores, ignoring any errors ('cause the owning team may have died on us) */ 745 delete_sem(si->vblank); 746 si->vblank = -1; 747 748 /* free regs and framebuffer areas */ 749 unmap_device(di); 750 751 /* clean up our shared area */ 752 delete_area(di->shared_area); 753 di->shared_area = -1; 754 di->si = NULL; 755 756 unlock_and_exit: 757 /* mark the device available */ 758 di->is_open--; 759 /* unlock the driver */ 760 RELEASE_BEN(pd->kernel); 761 /* all done */ 762 return B_OK; 763 } 764 765 /* ----------- 766 control_hook - where the real work is done 767 ----------- */ 768 static status_t 769 control_hook (void* dev, uint32 msg, void *buf, size_t len) { 770 device_info *di = (device_info *)dev; 771 status_t result = B_DEV_INVALID_IOCTL; 772 773 switch (msg) { 774 /* the only PUBLIC ioctl */ 775 case B_GET_ACCELERANT_SIGNATURE: { 776 char *sig = (char *)buf; 777 strcpy(sig, current_settings.accelerant); 778 result = B_OK; 779 } break; 780 781 /* PRIVATE ioctl from here on */ 782 case GX00_GET_PRIVATE_DATA: { 783 gx00_get_private_data *gpd = (gx00_get_private_data *)buf; 784 if (gpd->magic == GX00_PRIVATE_DATA_MAGIC) { 785 gpd->shared_info_area = di->shared_area; 786 result = B_OK; 787 } 788 } break; 789 case GX00_GET_PCI: { 790 gx00_get_set_pci *gsp = (gx00_get_set_pci *)buf; 791 if (gsp->magic == GX00_PRIVATE_DATA_MAGIC) { 792 pci_info *pcii = &(di->pcii); 793 gsp->value = get_pci(gsp->offset, gsp->size); 794 result = B_OK; 795 } 796 } break; 797 case GX00_SET_PCI: { 798 gx00_get_set_pci *gsp = (gx00_get_set_pci *)buf; 799 if (gsp->magic == GX00_PRIVATE_DATA_MAGIC) { 800 pci_info *pcii = &(di->pcii); 801 set_pci(gsp->offset, gsp->size, gsp->value); 802 result = B_OK; 803 } 804 } break; 805 case GX00_DEVICE_NAME: { // apsed 806 gx00_device_name *dn = (gx00_device_name *)buf; 807 if (dn->magic == GX00_PRIVATE_DATA_MAGIC) { 808 strcpy(dn->name, di->name); 809 result = B_OK; 810 } 811 } break; 812 case GX00_RUN_INTERRUPTS: { 813 gx00_set_bool_state *ri = (gx00_set_bool_state *)buf; 814 if (ri->magic == GX00_PRIVATE_DATA_MAGIC) { 815 vuint32 *regs = di->regs; 816 if (ri->do_it) { 817 enable_vbi(regs); 818 } else { 819 disable_vbi(regs); 820 } 821 result = B_OK; 822 } 823 } break; 824 } 825 return result; 826 } 827 828