| 1 | /* |
| 2 | * Copyright 1992 by Rich Murphey <Rich@Rice.edu> |
| 3 | * Copyright 1993 by David Wexelblat <dwex@goblin.org> |
| 4 | * |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | * documentation for any purpose is hereby granted without fee, provided that |
| 7 | * the above copyright notice appear in all copies and that both that |
| 8 | * copyright notice and this permission notice appear in supporting |
| 9 | * documentation, and that the names of Rich Murphey and David Wexelblat |
| 10 | * not be used in advertising or publicity pertaining to distribution of |
| 11 | * the software without specific, written prior permission. Rich Murphey and |
| 12 | * David Wexelblat make no representations about the suitability of this |
| 13 | * software for any purpose. It is provided "as is" without express or |
| 14 | * implied warranty. |
| 15 | * |
| 16 | * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO |
| 17 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 18 | * FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR |
| 19 | * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| 20 | * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF |
| 21 | * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 22 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * The ARM32 code here carries the following copyright: |
| 28 | * |
| 29 | * Copyright 1997 |
| 30 | * Digital Equipment Corporation. All rights reserved. |
| 31 | * This software is furnished under license and may be used and copied only in |
| 32 | * accordance with the following terms and conditions. Subject to these |
| 33 | * conditions, you may download, copy, install, use, modify and distribute |
| 34 | * this software in source and/or binary form. No title or ownership is |
| 35 | * transferred hereby. |
| 36 | * |
| 37 | * 1) Any source code used, modified or distributed must reproduce and retain |
| 38 | * this copyright notice and list of conditions as they appear in the |
| 39 | * source file. |
| 40 | * |
| 41 | * 2) No right is granted to use any trade name, trademark, or logo of Digital |
| 42 | * Equipment Corporation. Neither the "Digital Equipment Corporation" |
| 43 | * name nor any trademark or logo of Digital Equipment Corporation may be |
| 44 | * used to endorse or promote products derived from this software without |
| 45 | * the prior written permission of Digital Equipment Corporation. |
| 46 | * |
| 47 | * 3) This software is provided "AS-IS" and any express or implied warranties, |
| 48 | * including but not limited to, any implied warranties of merchantability, |
| 49 | * fitness for a particular purpose, or non-infringement are disclaimed. |
| 50 | * In no event shall DIGITAL be liable for any damages whatsoever, and in |
| 51 | * particular, DIGITAL shall not be liable for special, indirect, |
| 52 | * consequential, or incidental damages or damages for lost profits, loss |
| 53 | * of revenue or loss of use, whether such damages arise in contract, |
| 54 | * negligence, tort, under statute, in equity, at law or otherwise, even |
| 55 | * if advised of the possibility of such damage. |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | #ifdef HAVE_XORG_CONFIG_H |
| 60 | #include <xorg-config.h> |
| 61 | #endif |
| 62 | |
| 63 | #include <X11/X.h> |
| 64 | #include "xf86.h" |
| 65 | #include "xf86Priv.h" |
| 66 | #include "xf86_OSlib.h" |
| 67 | #include "xf86OSpriv.h" |
| 68 | |
| 69 | #ifdef __arm32__ |
| 70 | #include "machine/devmap.h" |
| 71 | struct memAccess { |
| 72 | int ioctl; |
| 73 | struct map_info memInfo; |
| 74 | pointer regionVirtBase; |
| 75 | Bool Checked; |
| 76 | Bool OK; |
| 77 | }; |
| 78 | |
| 79 | static pointer xf86MapInfoMap(); |
| 80 | static void xf86MapInfoUnmap(); |
| 81 | static struct memAccess *checkMapInfo(); |
| 82 | extern int vgaPhysLinearBase; |
| 83 | |
| 84 | /* A memAccess structure is needed for each possible region */ |
| 85 | struct memAccess vgaMemInfo = { CONSOLE_GET_MEM_INFO, NULL, NULL, |
| 86 | FALSE, FALSE |
| 87 | }; |
| 88 | |
| 89 | struct memAccess linearMemInfo = { CONSOLE_GET_LINEAR_INFO, NULL, NULL, |
| 90 | FALSE, FALSE |
| 91 | }; |
| 92 | |
| 93 | struct memAccess ioMemInfo = { CONSOLE_GET_IO_INFO, NULL, NULL, |
| 94 | FALSE, FALSE |
| 95 | }; |
| 96 | #endif /* __arm32__ */ |
| 97 | |
| 98 | #if defined(__NetBSD__) && !defined(MAP_FILE) |
| 99 | #define MAP_FLAGS MAP_SHARED |
| 100 | #else |
| 101 | #define MAP_FLAGS (MAP_FILE | MAP_SHARED) |
| 102 | #endif |
| 103 | |
| 104 | #define BUS_BASE 0L |
| 105 | #define BUS_BASE_BWX 0L |
| 106 | |
| 107 | /***************************************************************************/ |
| 108 | /* Video Memory Mapping section */ |
| 109 | /***************************************************************************/ |
| 110 | |
| 111 | static Bool useDevMem = FALSE; |
| 112 | static int devMemFd = -1; |
| 113 | |
| 114 | static pointer mapVidMem(int, unsigned long, unsigned long, int); |
| 115 | static void unmapVidMem(int, pointer, unsigned long); |
| 116 | |
| 117 | /* |
| 118 | * Check if /dev/mem can be mmap'd. If it can't print a warning when |
| 119 | * "warn" is TRUE. |
| 120 | */ |
| 121 | static void |
| 122 | checkDevMem(Bool warn) |
| 123 | { |
| 124 | static Bool devMemChecked = FALSE; |
| 125 | int fd; |
| 126 | pointer base; |
| 127 | |
| 128 | if (devMemChecked) |
| 129 | return; |
| 130 | devMemChecked = TRUE; |
| 131 | |
| 132 | if ((fd = open(DEV_MEM, O_RDWR)) >= 0) { |
| 133 | /* Try to map a page at the VGA address */ |
| 134 | base = mmap((caddr_t) 0, 4096, PROT_READ | PROT_WRITE, |
| 135 | MAP_FLAGS, fd, (off_t) 0xA0000 + BUS_BASE); |
| 136 | |
| 137 | if (base != MAP_FAILED) { |
| 138 | munmap((caddr_t) base, 4096); |
| 139 | devMemFd = fd; |
| 140 | useDevMem = TRUE; |
| 141 | return; |
| 142 | } |
| 143 | else { |
| 144 | /* This should not happen */ |
| 145 | if (warn) { |
| 146 | xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n", |
| 147 | DEV_MEM, strerror(errno)); |
| 148 | } |
| 149 | useDevMem = FALSE; |
| 150 | return; |
| 151 | } |
| 152 | } |
| 153 | if (warn) { |
| 154 | xf86Msg(X_WARNING, "checkDevMem: failed to open %s (%s)\n", |
| 155 | DEV_MEM, strerror(errno)); |
| 156 | } |
| 157 | useDevMem = FALSE; |
| 158 | return; |
| 159 | } |
| 160 | |
| 161 | void |
| 162 | xf86OSInitVidMem(VidMemInfoPtr pVidMem) |
| 163 | { |
| 164 | |
| 165 | checkDevMem(TRUE); |
| 166 | pVidMem->linearSupported = useDevMem; |
| 167 | pVidMem->mapMem = armMapVidMem; |
| 168 | pVidMem->unmapVidMem = armUnmapVidMem; |
| 169 | |
| 170 | pVidMem->initialised = TRUE; |
| 171 | } |
| 172 | |
| 173 | static pointer |
| 174 | mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) |
| 175 | { |
| 176 | pointer base; |
| 177 | |
| 178 | checkDevMem(FALSE); |
| 179 | |
| 180 | if (useDevMem) { |
| 181 | if (devMemFd < 0) { |
| 182 | FatalError("xf86MapVidMem: failed to open %s (%s)\n", |
| 183 | DEV_MEM, strerror(errno)); |
| 184 | } |
| 185 | base = mmap((caddr_t) 0, Size, |
| 186 | (flags & VIDMEM_READONLY) ? |
| 187 | PROT_READ : (PROT_READ | PROT_WRITE), |
| 188 | MAP_FLAGS, devMemFd, (off_t) Base + BUS_BASE_BWX); |
| 189 | if (base == MAP_FAILED) { |
| 190 | FatalError("%s: could not mmap %s [s=%x,a=%x] (%s)\n", |
| 191 | "xf86MapVidMem", DEV_MEM, Size, Base, strerror(errno)); |
| 192 | } |
| 193 | return base; |
| 194 | } |
| 195 | |
| 196 | /* else, mmap /dev/vga */ |
| 197 | if ((unsigned long) Base < 0xA0000 || (unsigned long) Base >= 0xC0000) { |
| 198 | FatalError("%s: Address 0x%x outside allowable range\n", |
| 199 | "xf86MapVidMem", Base); |
| 200 | } |
| 201 | base = mmap(0, Size, |
| 202 | (flags & VIDMEM_READONLY) ? |
| 203 | PROT_READ : (PROT_READ | PROT_WRITE), |
| 204 | MAP_FLAGS, xf86Info.consoleFd, (unsigned long) Base - 0xA0000); |
| 205 | if (base == MAP_FAILED) { |
| 206 | FatalError("xf86MapVidMem: Could not mmap /dev/vga (%s)\n", |
| 207 | strerror(errno)); |
| 208 | } |
| 209 | return base; |
| 210 | } |
| 211 | |
| 212 | static void |
| 213 | unmapVidMem(int ScreenNum, pointer Base, unsigned long Size) |
| 214 | { |
| 215 | munmap((caddr_t) Base, Size); |
| 216 | } |
| 217 | |
| 218 | /* |
| 219 | * Read BIOS via mmap()ing DEV_MEM |
| 220 | */ |
| 221 | |
| 222 | int |
| 223 | xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, |
| 224 | int Len) |
| 225 | { |
| 226 | unsigned char *ptr; |
| 227 | int psize; |
| 228 | int mlen; |
| 229 | |
| 230 | checkDevMem(TRUE); |
| 231 | if (devMemFd == -1) { |
| 232 | return -1; |
| 233 | } |
| 234 | |
| 235 | psize = getpagesize(); |
| 236 | Offset += Base & (psize - 1); |
| 237 | Base &= ~(psize - 1); |
| 238 | mlen = (Offset + Len + psize - 1) & ~(psize - 1); |
| 239 | ptr = (unsigned char *) mmap((caddr_t) 0, mlen, PROT_READ, |
| 240 | MAP_SHARED, devMemFd, (off_t) Base + BUS_BASE); |
| 241 | if ((long) ptr == -1) { |
| 242 | xf86Msg(X_WARNING, |
| 243 | "xf86ReadBIOS: %s mmap[s=%x,a=%x,o=%x] failed (%s)\n", |
| 244 | DEV_MEM, Len, Base, Offset, strerror(errno)); |
| 245 | return -1; |
| 246 | } |
| 247 | #ifdef DEBUG |
| 248 | ErrorF("xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n", |
| 249 | Base, ptr[0] | (ptr[1] << 8)); |
| 250 | #endif |
| 251 | (void) memcpy(Buf, (void *) (ptr + Offset), Len); |
| 252 | (void) munmap((caddr_t) ptr, mlen); |
| 253 | #ifdef DEBUG |
| 254 | xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS(%x, %x, Buf, %x)" |
| 255 | "-> %02x %02x %02x %02x...\n", |
| 256 | Base, Offset, Len, Buf[0], Buf[1], Buf[2], Buf[3]); |
| 257 | #endif |
| 258 | return Len; |
| 259 | } |
| 260 | |
| 261 | /* XXX This needs to be updated for the ND */ |
| 262 | |
| 263 | /* |
| 264 | ** Find out whether the console driver provides memory mapping information |
| 265 | ** for the specified region and return the map_info pointer. Print a warning if required. |
| 266 | */ |
| 267 | static struct memAccess * |
| 268 | checkMapInfo(Bool warn, int Region) |
| 269 | { |
| 270 | struct memAccess *memAccP; |
| 271 | |
| 272 | switch (Region) { |
| 273 | case VGA_REGION: |
| 274 | memAccP = &vgaMemInfo; |
| 275 | break; |
| 276 | |
| 277 | case LINEAR_REGION: |
| 278 | memAccP = &linearMemInfo; |
| 279 | break; |
| 280 | |
| 281 | case MMIO_REGION: |
| 282 | memAccP = &ioMemInfo; |
| 283 | break; |
| 284 | |
| 285 | default: |
| 286 | return NULL; |
| 287 | break; |
| 288 | } |
| 289 | |
| 290 | if (!memAccP->Checked) { |
| 291 | if (ioctl(xf86Info.consoleFd, memAccP->ioctl, &(memAccP->memInfo)) == |
| 292 | -1) { |
| 293 | if (warn) { |
| 294 | xf86Msg(X_WARNING, |
| 295 | "checkMapInfo: failed to get map info for region %d\n\t(%s)\n", |
| 296 | Region, strerror(errno)); |
| 297 | } |
| 298 | } |
| 299 | else { |
| 300 | if (memAccP->memInfo.u.map_info_mmap.map_offset != MAP_INFO_UNKNOWN) |
| 301 | memAccP->OK = TRUE; |
| 302 | } |
| 303 | memAccP->Checked = TRUE; |
| 304 | } |
| 305 | if (memAccP->OK) { |
| 306 | return memAccP; |
| 307 | } |
| 308 | else { |
| 309 | return NULL; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | static pointer |
| 314 | xf86MapInfoMap(struct memAccess *memInfoP, pointer Base, unsigned long Size) |
| 315 | { |
| 316 | struct map_info *mapInfoP = &(memInfoP->memInfo); |
| 317 | |
| 318 | if (mapInfoP->u.map_info_mmap.map_size == MAP_INFO_UNKNOWN) { |
| 319 | Size = (unsigned long) Base + Size; |
| 320 | } |
| 321 | else { |
| 322 | Size = mapInfoP->u.map_info_mmap.map_size; |
| 323 | } |
| 324 | |
| 325 | switch (mapInfoP->method) { |
| 326 | case MAP_MMAP: |
| 327 | /* Need to remap if size is unknown because we may not have |
| 328 | mapped the whole region initially */ |
| 329 | if (memInfoP->regionVirtBase == NULL || |
| 330 | mapInfoP->u.map_info_mmap.map_size == MAP_INFO_UNKNOWN) { |
| 331 | if ((memInfoP->regionVirtBase = |
| 332 | mmap((caddr_t) 0, |
| 333 | Size, |
| 334 | PROT_READ | PROT_WRITE, |
| 335 | MAP_SHARED, |
| 336 | xf86Info.consoleFd, |
| 337 | (unsigned long) mapInfoP->u.map_info_mmap.map_offset)) |
| 338 | == (pointer) -1) { |
| 339 | FatalError |
| 340 | ("xf86MapInfoMap: Failed to map memory at 0x%x\n\t%s\n", |
| 341 | mapInfoP->u.map_info_mmap.map_offset, strerror(errno)); |
| 342 | } |
| 343 | if (mapInfoP->u.map_info_mmap.internal_offset > 0) |
| 344 | memInfoP->regionVirtBase += |
| 345 | mapInfoP->u.map_info_mmap.internal_offset; |
| 346 | } |
| 347 | break; |
| 348 | |
| 349 | default: |
| 350 | FatalError("xf86MapInfoMap: Unsuported mapping method\n"); |
| 351 | break; |
| 352 | } |
| 353 | |
| 354 | return (pointer) ((int) memInfoP->regionVirtBase + (int) Base); |
| 355 | } |
| 356 | |
| 357 | static void |
| 358 | xf86MapInfoUnmap(struct memAccess *memInfoP, unsigned long Size) |
| 359 | { |
| 360 | struct map_info *mapInfoP = &(memInfoP->memInfo); |
| 361 | |
| 362 | switch (mapInfoP->method) { |
| 363 | case MAP_MMAP: |
| 364 | if (memInfoP->regionVirtBase != NULL) { |
| 365 | if (mapInfoP->u.map_info_mmap.map_size != MAP_INFO_UNKNOWN) |
| 366 | Size = mapInfoP->u.map_info_mmap.map_size; |
| 367 | munmap((caddr_t) memInfoP->regionVirtBase, Size); |
| 368 | memInfoP->regionVirtBase = NULL; |
| 369 | } |
| 370 | break; |
| 371 | default: |
| 372 | FatalError("xf86MapInfoMap: Unsuported mapping method\n"); |
| 373 | break; |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | static pointer |
| 378 | armMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) |
| 379 | { |
| 380 | struct memAccess *memInfoP; |
| 381 | |
| 382 | if ((memInfoP = checkMapInfo(FALSE, Region)) != NULL) { |
| 383 | /* |
| 384 | ** xf86 passes in a physical address offset from the start |
| 385 | ** of physical memory, but xf86MapInfoMap expects an |
| 386 | ** offset from the start of the specified region - it gets |
| 387 | ** the physical address of the region from the display driver. |
| 388 | */ |
| 389 | switch (Region) { |
| 390 | case LINEAR_REGION: |
| 391 | if (vgaPhysLinearBase) { |
| 392 | Base -= vgaPhysLinearBase; |
| 393 | } |
| 394 | break; |
| 395 | case VGA_REGION: |
| 396 | Base -= 0xA0000; |
| 397 | break; |
| 398 | } |
| 399 | |
| 400 | base = xf86MapInfoMap(memInfoP, Base, Size); |
| 401 | return base; |
| 402 | } |
| 403 | return mapVidMem(ScreenNum, Base, Size, flags); |
| 404 | } |
| 405 | |
| 406 | static void |
| 407 | armUnmapVidMem(int ScreenNum, pointer Base, unsigned long Size) |
| 408 | { |
| 409 | struct memAccess *memInfoP; |
| 410 | |
| 411 | if ((memInfoP = checkMapInfo(FALSE, Region)) != NULL) { |
| 412 | xf86MapInfoUnmap(memInfoP, Base, Size); |
| 413 | } |
| 414 | unmapVidMem(ScreenNum, Base, Size); |
| 415 | } |
| 416 | |
| 417 | #ifdef USE_DEV_IO |
| 418 | static int IoFd = -1; |
| 419 | |
| 420 | Bool |
| 421 | xf86EnableIO() |
| 422 | { |
| 423 | if (IoFd >= 0) |
| 424 | return TRUE; |
| 425 | |
| 426 | if ((IoFd = open("/dev/io", O_RDWR)) == -1) { |
| 427 | xf86Msg(X_WARNING, "xf86EnableIO: " |
| 428 | "Failed to open /dev/io for extended I/O\n"); |
| 429 | return FALSE; |
| 430 | } |
| 431 | return TRUE; |
| 432 | } |
| 433 | |
| 434 | void |
| 435 | xf86DisableIO() |
| 436 | { |
| 437 | if (IoFd < 0) |
| 438 | return; |
| 439 | |
| 440 | close(IoFd); |
| 441 | IoFd = -1; |
| 442 | return; |
| 443 | } |
| 444 | |
| 445 | #endif |
| 446 | |
| 447 | #if defined(USE_ARC_MMAP) || defined(__arm32__) |
| 448 | |
| 449 | Bool |
| 450 | xf86EnableIO() |
| 451 | { |
| 452 | int fd; |
| 453 | pointer base; |
| 454 | |
| 455 | if (ExtendedEnabled) |
| 456 | return TRUE; |
| 457 | |
| 458 | if ((fd = open("/dev/ttyC0", O_RDWR)) >= 0) { |
| 459 | /* Try to map a page at the pccons I/O space */ |
| 460 | base = (pointer) mmap((caddr_t) 0, 65536, PROT_READ | PROT_WRITE, |
| 461 | MAP_FLAGS, fd, (off_t) 0x0000); |
| 462 | |
| 463 | if (base != (pointer) -1) { |
| 464 | IOPortBase = base; |
| 465 | } |
| 466 | else { |
| 467 | xf86Msg(X_WARNING, "EnableIO: failed to mmap %s (%s)\n", |
| 468 | "/dev/ttyC0", strerror(errno)); |
| 469 | return FALSE; |
| 470 | } |
| 471 | } |
| 472 | else { |
| 473 | xf86Msg("EnableIO: failed to open %s (%s)\n", |
| 474 | "/dev/ttyC0", strerror(errno)); |
| 475 | return FALSE; |
| 476 | } |
| 477 | |
| 478 | ExtendedEnabled = TRUE; |
| 479 | |
| 480 | return TRUE; |
| 481 | } |
| 482 | |
| 483 | void |
| 484 | xf86DisableIO() |
| 485 | { |
| 486 | return; |
| 487 | } |
| 488 | |
| 489 | #endif /* USE_ARC_MMAP */ |
| 490 | |
| 491 | #if 0 |
| 492 | /* |
| 493 | * XXX This is here for reference. It needs to be handled differently for the |
| 494 | * ND. |
| 495 | */ |
| 496 | #if defined(USE_ARC_MMAP) || defined(__arm32__) |
| 497 | |
| 498 | #ifdef USE_ARM32_MMAP |
| 499 | #define DEV_MEM_IOBASE 0x43000000 |
| 500 | #endif |
| 501 | |
| 502 | static Bool ScreenEnabled[MAXSCREENS]; |
| 503 | static Bool ExtendedEnabled = FALSE; |
| 504 | static Bool InitDone = FALSE; |
| 505 | |
| 506 | Bool |
| 507 | xf86EnableIOPorts(ScreenNum) |
| 508 | int ScreenNum; |
| 509 | { |
| 510 | int i; |
| 511 | int fd; |
| 512 | pointer base; |
| 513 | |
| 514 | #ifdef __arm32__ |
| 515 | struct memAccess *memInfoP; |
| 516 | int *Size; |
| 517 | #endif |
| 518 | |
| 519 | ScreenEnabled[ScreenNum] = TRUE; |
| 520 | |
| 521 | if (ExtendedEnabled) |
| 522 | return TRUE; |
| 523 | |
| 524 | #ifdef USE_ARC_MMAP |
| 525 | if ((fd = open("/dev/ttyC0", O_RDWR)) >= 0) { |
| 526 | /* Try to map a page at the pccons I/O space */ |
| 527 | base = (pointer) mmap((caddr_t) 0, 65536, PROT_READ | PROT_WRITE, |
| 528 | MAP_FLAGS, fd, (off_t) 0x0000); |
| 529 | |
| 530 | if (base != (pointer) -1) { |
| 531 | IOPortBase = base; |
| 532 | } |
| 533 | else { |
| 534 | xf86Msg(X_ERROR, |
| 535 | "EnableIOPorts: failed to mmap %s (%s)\n", |
| 536 | "/dev/ttyC0", strerror(errno)); |
| 537 | } |
| 538 | } |
| 539 | else { |
| 540 | xf86Msg(X_ERROR, "EnableIOPorts: failed to open %s (%s)\n", |
| 541 | "/dev/ttyC0", strerror(errno)); |
| 542 | } |
| 543 | #endif |
| 544 | |
| 545 | #ifdef __arm32__ |
| 546 | IOPortBase = (unsigned int) -1; |
| 547 | |
| 548 | if ((memInfoP = checkMapInfo(TRUE, MMIO_REGION)) != NULL) { |
| 549 | /* |
| 550 | * xf86MapInfoMap maps an offset from the start of video IO |
| 551 | * space (e.g. 0x3B0), but IOPortBase is expected to map to |
| 552 | * physical address 0x000, so subtract the start of video I/O |
| 553 | * space from the result. This is safe for now becase we |
| 554 | * actually mmap the start of the page, then the start of video |
| 555 | * I/O space is added as an internal offset. |
| 556 | */ |
| 557 | IOPortBase = (unsigned int) xf86MapInfoMap(memInfoP, (caddr_t) 0x0, 0L) |
| 558 | - memInfoP->memInfo.u.map_info_mmap.internal_offset; |
| 559 | ExtendedEnabled = TRUE; |
| 560 | return TRUE; |
| 561 | } |
| 562 | #ifdef USE_ARM32_MMAP |
| 563 | checkDevMem(TRUE); |
| 564 | |
| 565 | if (devMemFd >= 0 && useDevMem) { |
| 566 | base = (pointer) mmap((caddr_t) 0, 0x400, PROT_READ | PROT_WRITE, |
| 567 | MAP_FLAGS, devMemFd, (off_t) DEV_MEM_IOBASE); |
| 568 | |
| 569 | if (base != (pointer) -1) |
| 570 | IOPortBase = (unsigned int) base; |
| 571 | } |
| 572 | |
| 573 | if (IOPortBase == (unsigned int) -1) { |
| 574 | xf86Msg(X_WARNING, |
| 575 | "xf86EnableIOPorts: failed to open mem device or map IO base. \n\ |
| 576 | Make sure you have the Aperture Driver installed, or a kernel built with the INSECURE option\n"); |
| 577 | return FALSE; |
| 578 | } |
| 579 | #else |
| 580 | /* We don't have the IOBASE, so we can't map the address */ |
| 581 | xf86Msg(X_WARNING, |
| 582 | "xf86EnableIOPorts: failed to open mem device or map IO base. \n\ |
| 583 | Try building the server with USE_ARM32_MMAP defined\n"); |
| 584 | return FALSE; |
| 585 | #endif |
| 586 | #endif |
| 587 | |
| 588 | ExtendedEnabled = TRUE; |
| 589 | |
| 590 | return TRUE; |
| 591 | } |
| 592 | |
| 593 | void |
| 594 | xf86DisableIOPorts(ScreenNum) |
| 595 | int ScreenNum; |
| 596 | { |
| 597 | int i; |
| 598 | |
| 599 | #ifdef __arm32__ |
| 600 | struct memAccess *memInfoP; |
| 601 | #endif |
| 602 | |
| 603 | ScreenEnabled[ScreenNum] = FALSE; |
| 604 | |
| 605 | #ifdef __arm32__ |
| 606 | if ((memInfoP = checkMapInfo(FALSE, MMIO_REGION)) != NULL) { |
| 607 | xf86MapInfoUnmap(memInfoP, 0); |
| 608 | } |
| 609 | #endif |
| 610 | |
| 611 | #ifdef USE_ARM32_MMAP |
| 612 | if (!ExtendedEnabled) |
| 613 | return; |
| 614 | |
| 615 | for (i = 0; i < MAXSCREENS; i++) |
| 616 | if (ScreenEnabled[i]) |
| 617 | return; |
| 618 | |
| 619 | munmap((caddr_t) IOPortBase, 0x400); |
| 620 | IOPortBase = (unsigned int) -1; |
| 621 | ExtendedEnabled = FALSE; |
| 622 | #endif |
| 623 | |
| 624 | return; |
| 625 | } |
| 626 | |
| 627 | #endif /* USE_ARC_MMAP || USE_ARM32_MMAP */ |
| 628 | #endif |