| 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 | #ifdef HAVE_XORG_CONFIG_H |
| 27 | #include <xorg-config.h> |
| 28 | #endif |
| 29 | |
| 30 | #include <X11/X.h> |
| 31 | #include "xf86.h" |
| 32 | #include "xf86Priv.h" |
| 33 | |
| 34 | #include <sys/param.h> |
| 35 | #ifndef __NetBSD__ |
| 36 | #include <sys/sysctl.h> |
| 37 | #endif |
| 38 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) |
| 39 | #include <machine/sysarch.h> |
| 40 | #endif |
| 41 | |
| 42 | #include "xf86Axp.h" |
| 43 | |
| 44 | #include "xf86_OSlib.h" |
| 45 | #include "xf86OSpriv.h" |
| 46 | |
| 47 | #if defined(__NetBSD__) && !defined(MAP_FILE) |
| 48 | #define MAP_FLAGS MAP_SHARED |
| 49 | #else |
| 50 | #define MAP_FLAGS (MAP_FILE | MAP_SHARED) |
| 51 | #endif |
| 52 | |
| 53 | axpDevice bsdGetAXP(void); |
| 54 | |
| 55 | #ifndef __NetBSD__ |
| 56 | extern unsigned long dense_base(void); |
| 57 | |
| 58 | static int axpSystem = -1; |
| 59 | static unsigned long hae_thresh; |
| 60 | static unsigned long hae_mask; |
| 61 | |
| 62 | static unsigned long |
| 63 | memory_base(void) |
| 64 | { |
| 65 | static unsigned long base = 0; |
| 66 | |
| 67 | if (base == 0) { |
| 68 | size_t len = sizeof(base); |
| 69 | int error; |
| 70 | |
| 71 | #ifdef __OpenBSD__ |
| 72 | int mib[3]; |
| 73 | |
| 74 | mib[0] = CTL_MACHDEP; |
| 75 | mib[1] = CPU_CHIPSET; |
| 76 | mib[2] = CPU_CHIPSET_MEM; |
| 77 | |
| 78 | if ((error = sysctl(mib, 3, &base, &len, NULL, 0)) < 0) |
| 79 | #else |
| 80 | if ((error = sysctlbyname("hw.chipset.memory", &base, &len, 0, 0)) < 0) |
| 81 | #endif |
| 82 | FatalError("xf86MapVidMem: can't find memory\n"); |
| 83 | } |
| 84 | |
| 85 | return base; |
| 86 | } |
| 87 | |
| 88 | static int |
| 89 | has_bwx(void) |
| 90 | { |
| 91 | static int bwx = 0; |
| 92 | size_t len = sizeof(bwx); |
| 93 | int error; |
| 94 | |
| 95 | #ifdef __OpenBSD__ |
| 96 | int mib[3]; |
| 97 | |
| 98 | mib[0] = CTL_MACHDEP; |
| 99 | mib[1] = CPU_CHIPSET; |
| 100 | mib[2] = CPU_CHIPSET_BWX; |
| 101 | |
| 102 | if ((error = sysctl(mib, 3, &bwx, &len, NULL, 0)) < 0) |
| 103 | return FALSE; |
| 104 | else |
| 105 | return bwx; |
| 106 | #else |
| 107 | if ((error = sysctlbyname("hw.chipset.bwx", &bwx, &len, 0, 0)) < 0) |
| 108 | return FALSE; |
| 109 | else |
| 110 | return bwx; |
| 111 | #endif |
| 112 | } |
| 113 | #else /* __NetBSD__ */ |
| 114 | static unsigned long hae_thresh = (1UL << 24); |
| 115 | static unsigned long hae_mask = 0xf8000000UL; /* XXX - should use xf86AXP.c */ |
| 116 | static struct alpha_bus_window *abw; |
| 117 | static int abw_count = -1; |
| 118 | |
| 119 | static void |
| 120 | init_abw(void) |
| 121 | { |
| 122 | if (abw_count < 0) { |
| 123 | abw_count = alpha_bus_getwindows(ALPHA_BUS_TYPE_PCI_MEM, &abw); |
| 124 | if (abw_count <= 0) |
| 125 | FatalError("init_abw: alpha_bus_getwindows failed\n"); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | has_bwx(void) |
| 131 | { |
| 132 | if (abw_count < 0) |
| 133 | init_abw(); |
| 134 | |
| 135 | xf86Msg(X_INFO, "has_bwx = %d\n", abw[0].abw_abst.abst_flags & ABST_BWX ? 1 : 0); /* XXXX */ |
| 136 | return abw[0].abw_abst.abst_flags & ABST_BWX; |
| 137 | } |
| 138 | |
| 139 | static unsigned long |
| 140 | dense_base(void) |
| 141 | { |
| 142 | if (abw_count < 0) |
| 143 | init_abw(); |
| 144 | |
| 145 | /* XXX check abst_flags for ABST_DENSE just to be safe? */ |
| 146 | xf86Msg(X_INFO, "dense base = %#lx\n", abw[0].abw_abst.abst_sys_start); /* XXXX */ |
| 147 | return abw[0].abw_abst.abst_sys_start; |
| 148 | } |
| 149 | |
| 150 | static unsigned long |
| 151 | memory_base(void) |
| 152 | { |
| 153 | if (abw_count < 0) |
| 154 | init_abw(); |
| 155 | |
| 156 | if (abw_count > 1) { |
| 157 | xf86Msg(X_INFO, "memory base = %#lx\n", abw[1].abw_abst.abst_sys_start); /* XXXX */ |
| 158 | return abw[1].abw_abst.abst_sys_start; |
| 159 | } |
| 160 | else if (abw_count == 1) { |
| 161 | /* assume memory_base == dense_base */ |
| 162 | xf86Msg(X_INFO, "memory base = %#lx\n", abw[0].abw_abst.abst_sys_start); /* XXXX */ |
| 163 | return abw[0].abw_abst.abst_sys_start; |
| 164 | } |
| 165 | else { |
| 166 | xf86Msg(X_INFO, "no memory base\n"); /* XXXX */ |
| 167 | return 0; |
| 168 | } |
| 169 | } |
| 170 | #endif /* __NetBSD__ */ |
| 171 | |
| 172 | #define BUS_BASE dense_base() |
| 173 | #define BUS_BASE_BWX memory_base() |
| 174 | |
| 175 | /***************************************************************************/ |
| 176 | /* Video Memory Mapping section */ |
| 177 | /***************************************************************************/ |
| 178 | |
| 179 | #ifdef __OpenBSD__ |
| 180 | #define SYSCTL_MSG "\tCheck that you have set 'machdep.allowaperture=1'\n"\ |
| 181 | "\tin /etc/sysctl.conf and reboot your machine\n" \ |
| 182 | "\trefer to xf86(4) for details" |
| 183 | #endif |
| 184 | |
| 185 | static Bool useDevMem = FALSE; |
| 186 | static int devMemFd = -1; |
| 187 | |
| 188 | #ifdef HAS_APERTURE_DRV |
| 189 | #define DEV_APERTURE "/dev/xf86" |
| 190 | #endif |
| 191 | |
| 192 | static pointer mapVidMem(int, unsigned long, unsigned long, int); |
| 193 | static void unmapVidMem(int, pointer, unsigned long); |
| 194 | static pointer mapVidMemSparse(int, unsigned long, unsigned long, int); |
| 195 | static void unmapVidMemSparse(int, pointer, unsigned long); |
| 196 | |
| 197 | /* |
| 198 | * Check if /dev/mem can be mmap'd. If it can't print a warning when |
| 199 | * "warn" is TRUE. |
| 200 | */ |
| 201 | static void |
| 202 | checkDevMem(Bool warn) |
| 203 | { |
| 204 | static Bool devMemChecked = FALSE; |
| 205 | int fd; |
| 206 | pointer base; |
| 207 | |
| 208 | if (devMemChecked) |
| 209 | return; |
| 210 | devMemChecked = TRUE; |
| 211 | |
| 212 | #ifdef HAS_APERTURE_DRV |
| 213 | /* Try the aperture driver first */ |
| 214 | if ((fd = open(DEV_APERTURE, O_RDWR)) >= 0) { |
| 215 | /* Try to map a page at the VGA address */ |
| 216 | base = mmap((caddr_t) 0, 4096, PROT_READ | PROT_WRITE, |
| 217 | MAP_FLAGS, fd, (off_t) 0xA0000 + BUS_BASE); |
| 218 | |
| 219 | if (base != MAP_FAILED) { |
| 220 | munmap((caddr_t) base, 4096); |
| 221 | devMemFd = fd; |
| 222 | useDevMem = TRUE; |
| 223 | xf86Msg(X_INFO, "checkDevMem: using aperture driver %s\n", |
| 224 | DEV_APERTURE); |
| 225 | return; |
| 226 | } |
| 227 | else { |
| 228 | if (warn) { |
| 229 | xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n", |
| 230 | DEV_APERTURE, strerror(errno)); |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | #endif |
| 235 | if ((fd = open(DEV_MEM, O_RDWR)) >= 0) { |
| 236 | /* Try to map a page at the VGA address */ |
| 237 | base = mmap((caddr_t) 0, 4096, PROT_READ | PROT_WRITE, |
| 238 | MAP_FLAGS, fd, (off_t) 0xA0000 + BUS_BASE); |
| 239 | |
| 240 | if (base != MAP_FAILED) { |
| 241 | munmap((caddr_t) base, 4096); |
| 242 | devMemFd = fd; |
| 243 | useDevMem = TRUE; |
| 244 | return; |
| 245 | } |
| 246 | else { |
| 247 | if (warn) { |
| 248 | xf86Msg(X_WARNING, "checkDevMem: failed to mmap %s (%s)\n", |
| 249 | DEV_MEM, strerror(errno)); |
| 250 | } |
| 251 | } |
| 252 | } |
| 253 | if (warn) { |
| 254 | #ifndef HAS_APERTURE_DRV |
| 255 | xf86Msg(X_WARNING, "checkDevMem: failed to open/mmap %s (%s)\n", |
| 256 | DEV_MEM, strerror(errno)); |
| 257 | #else |
| 258 | #ifndef __OpenBSD__ |
| 259 | xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n" |
| 260 | "\t(%s)\n", DEV_APERTURE, DEV_MEM, strerror(errno)); |
| 261 | #else /* __OpenBSD__ */ |
| 262 | xf86Msg(X_WARNING, "checkDevMem: failed to open %s and %s\n" |
| 263 | "\t(%s)\n%s", DEV_APERTURE, DEV_MEM, strerror(errno), |
| 264 | SYSCTL_MSG); |
| 265 | #endif /* __OpenBSD__ */ |
| 266 | #endif |
| 267 | xf86ErrorF("\tlinear framebuffer access unavailable\n"); |
| 268 | } |
| 269 | useDevMem = FALSE; |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | void |
| 274 | xf86OSInitVidMem(VidMemInfoPtr pVidMem) |
| 275 | { |
| 276 | checkDevMem(TRUE); |
| 277 | pVidMem->linearSupported = useDevMem; |
| 278 | |
| 279 | if (has_bwx()) { |
| 280 | xf86Msg(X_PROBED, "Machine type has 8/16 bit access\n"); |
| 281 | pVidMem->mapMem = mapVidMem; |
| 282 | pVidMem->unmapMem = unmapVidMem; |
| 283 | } |
| 284 | else { |
| 285 | xf86Msg(X_PROBED, "Machine needs sparse mapping\n"); |
| 286 | pVidMem->mapMem = mapVidMemSparse; |
| 287 | pVidMem->unmapMem = unmapVidMemSparse; |
| 288 | #ifndef __NetBSD__ |
| 289 | if (axpSystem == -1) |
| 290 | axpSystem = bsdGetAXP(); |
| 291 | hae_thresh = xf86AXPParams[axpSystem].hae_thresh; |
| 292 | hae_mask = xf86AXPParams[axpSystem].hae_mask; |
| 293 | #endif /* __NetBSD__ */ |
| 294 | } |
| 295 | pVidMem->initialised = TRUE; |
| 296 | } |
| 297 | |
| 298 | static pointer |
| 299 | mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) |
| 300 | { |
| 301 | pointer base; |
| 302 | |
| 303 | checkDevMem(FALSE); |
| 304 | Base = Base & ((1L << 32) - 1); |
| 305 | |
| 306 | if (useDevMem) { |
| 307 | if (devMemFd < 0) { |
| 308 | FatalError("xf86MapVidMem: failed to open %s (%s)\n", |
| 309 | DEV_MEM, strerror(errno)); |
| 310 | } |
| 311 | base = mmap((caddr_t) 0, Size, |
| 312 | (flags & VIDMEM_READONLY) ? |
| 313 | PROT_READ : (PROT_READ | PROT_WRITE), |
| 314 | MAP_FLAGS, devMemFd, (off_t) Base + BUS_BASE_BWX); |
| 315 | if (base == MAP_FAILED) { |
| 316 | FatalError("%s: could not mmap %s [s=%lx,a=%lx] (%s)\n", |
| 317 | "xf86MapVidMem", DEV_MEM, Size, Base, strerror(errno)); |
| 318 | } |
| 319 | return base; |
| 320 | } |
| 321 | |
| 322 | /* else, mmap /dev/vga */ |
| 323 | if ((unsigned long) Base < 0xA0000 || (unsigned long) Base >= 0xC0000) { |
| 324 | FatalError("%s: Address 0x%lx outside allowable range\n", |
| 325 | "xf86MapVidMem", Base); |
| 326 | } |
| 327 | base = mmap(0, Size, |
| 328 | (flags & VIDMEM_READONLY) ? |
| 329 | PROT_READ : (PROT_READ | PROT_WRITE), |
| 330 | MAP_FLAGS, xf86Info.consoleFd, (unsigned long) Base + BUS_BASE); |
| 331 | if (base == MAP_FAILED) { |
| 332 | FatalError("xf86MapVidMem: Could not mmap /dev/vga (%s)\n", |
| 333 | strerror(errno)); |
| 334 | } |
| 335 | return base; |
| 336 | } |
| 337 | |
| 338 | static void |
| 339 | unmapVidMem(int ScreenNum, pointer Base, unsigned long Size) |
| 340 | { |
| 341 | munmap((caddr_t) Base, Size); |
| 342 | } |
| 343 | |
| 344 | /* |
| 345 | * Read BIOS via mmap()ing DEV_MEM |
| 346 | */ |
| 347 | |
| 348 | int |
| 349 | xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, |
| 350 | int Len) |
| 351 | { |
| 352 | unsigned char *ptr; |
| 353 | int psize; |
| 354 | int mlen; |
| 355 | |
| 356 | checkDevMem(TRUE); |
| 357 | if (devMemFd == -1) { |
| 358 | return -1; |
| 359 | } |
| 360 | |
| 361 | psize = getpagesize(); |
| 362 | Offset += Base & (psize - 1); |
| 363 | Base &= ~(psize - 1); |
| 364 | mlen = (Offset + Len + psize - 1) & ~(psize - 1); |
| 365 | ptr = (unsigned char *) mmap((caddr_t) 0, mlen, PROT_READ, |
| 366 | MAP_SHARED, devMemFd, (off_t) Base + BUS_BASE); |
| 367 | if ((long) ptr == -1) { |
| 368 | xf86Msg(X_WARNING, |
| 369 | "xf86ReadBIOS: %s mmap[s=%x,a=%lx,o=%lx] failed (%s)\n", |
| 370 | DEV_MEM, Len, Base, Offset, strerror(errno)); |
| 371 | return -1; |
| 372 | } |
| 373 | #ifdef DEBUG |
| 374 | xf86MsgVerb(X_INFO, 3, |
| 375 | "xf86ReadBIOS: BIOS at 0x%08x has signature 0x%04x\n", Base, |
| 376 | ptr[0] | (ptr[1] << 8)); |
| 377 | #endif |
| 378 | (void) memcpy(Buf, (void *) (ptr + Offset), Len); |
| 379 | (void) munmap((caddr_t) ptr, mlen); |
| 380 | #ifdef DEBUG |
| 381 | xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS(%x, %x, Buf, %x)" |
| 382 | "-> %02x %02x %02x %02x...\n", |
| 383 | Base, Offset, Len, Buf[0], Buf[1], Buf[2], Buf[3]); |
| 384 | #endif |
| 385 | return Len; |
| 386 | } |
| 387 | |
| 388 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__) |
| 389 | |
| 390 | extern int ioperm(unsigned long from, unsigned long num, int on); |
| 391 | |
| 392 | Bool |
| 393 | xf86EnableIO() |
| 394 | { |
| 395 | if (!ioperm(0, 65536, TRUE)) |
| 396 | return TRUE; |
| 397 | return FALSE; |
| 398 | } |
| 399 | |
| 400 | void |
| 401 | xf86DisableIO() |
| 402 | { |
| 403 | return; |
| 404 | } |
| 405 | |
| 406 | #endif /* __FreeBSD_kernel__ || __OpenBSD__ */ |
| 407 | |
| 408 | #ifdef USE_ALPHA_PIO |
| 409 | |
| 410 | Bool |
| 411 | xf86EnableIO() |
| 412 | { |
| 413 | alpha_pci_io_enable(1); |
| 414 | return TRUE; |
| 415 | } |
| 416 | |
| 417 | void |
| 418 | xf86DisableIO() |
| 419 | { |
| 420 | alpha_pci_io_enable(0); |
| 421 | } |
| 422 | |
| 423 | #endif /* USE_ALPHA_PIO */ |
| 424 | |
| 425 | #define vuip volatile unsigned int * |
| 426 | |
| 427 | static pointer memSBase = 0; |
| 428 | static pointer memBase = 0; |
| 429 | |
| 430 | extern int readDense8(pointer Base, register unsigned long Offset); |
| 431 | extern int readDense16(pointer Base, register unsigned long Offset); |
| 432 | extern int readDense32(pointer Base, register unsigned long Offset); |
| 433 | extern void |
| 434 | writeDenseNB8(int Value, pointer Base, register unsigned long Offset); |
| 435 | extern void |
| 436 | writeDenseNB16(int Value, pointer Base, register unsigned long Offset); |
| 437 | extern void |
| 438 | writeDenseNB32(int Value, pointer Base, register unsigned long Offset); |
| 439 | extern void |
| 440 | writeDense8(int Value, pointer Base, register unsigned long Offset); |
| 441 | extern void |
| 442 | writeDense16(int Value, pointer Base, register unsigned long Offset); |
| 443 | extern void |
| 444 | writeDense32(int Value, pointer Base, register unsigned long Offset); |
| 445 | |
| 446 | static int readSparse8(pointer Base, register unsigned long Offset); |
| 447 | static int readSparse16(pointer Base, register unsigned long Offset); |
| 448 | static int readSparse32(pointer Base, register unsigned long Offset); |
| 449 | static void |
| 450 | writeSparseNB8(int Value, pointer Base, register unsigned long Offset); |
| 451 | static void |
| 452 | writeSparseNB16(int Value, pointer Base, register unsigned long Offset); |
| 453 | static void |
| 454 | writeSparseNB32(int Value, pointer Base, register unsigned long Offset); |
| 455 | static void |
| 456 | writeSparse8(int Value, pointer Base, register unsigned long Offset); |
| 457 | static void |
| 458 | writeSparse16(int Value, pointer Base, register unsigned long Offset); |
| 459 | static void |
| 460 | writeSparse32(int Value, pointer Base, register unsigned long Offset); |
| 461 | |
| 462 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 463 | extern int sysarch(int, void *); |
| 464 | |
| 465 | struct parms { |
| 466 | u_int64_t hae; |
| 467 | }; |
| 468 | |
| 469 | static void |
| 470 | sethae(u_int64_t hae) |
| 471 | { |
| 472 | #ifndef ALPHA_SETHAE |
| 473 | #define ALPHA_SETHAE 0 |
| 474 | #endif |
| 475 | static struct parms p; |
| 476 | |
| 477 | if (p.hae != hae) { |
| 478 | p.hae = hae; |
| 479 | sysarch(ALPHA_SETHAE, (char *) &p); |
| 480 | } |
| 481 | } |
| 482 | #endif |
| 483 | |
| 484 | static pointer |
| 485 | mapVidMemSparse(int ScreenNum, unsigned long Base, unsigned long Size, |
| 486 | int flags) |
| 487 | { |
| 488 | static Bool was_here = FALSE; |
| 489 | |
| 490 | if (!was_here) { |
| 491 | was_here = TRUE; |
| 492 | |
| 493 | checkDevMem(FALSE); |
| 494 | |
| 495 | xf86WriteMmio8 = writeSparse8; |
| 496 | xf86WriteMmio16 = writeSparse16; |
| 497 | xf86WriteMmio32 = writeSparse32; |
| 498 | xf86WriteMmioNB8 = writeSparseNB8; |
| 499 | xf86WriteMmioNB16 = writeSparseNB16; |
| 500 | xf86WriteMmioNB32 = writeSparseNB32; |
| 501 | xf86ReadMmio8 = readSparse8; |
| 502 | xf86ReadMmio16 = readSparse16; |
| 503 | xf86ReadMmio32 = readSparse32; |
| 504 | |
| 505 | memBase = mmap((caddr_t) 0, 0x100000000, |
| 506 | PROT_READ | PROT_WRITE, |
| 507 | MAP_SHARED, devMemFd, (off_t) BUS_BASE); |
| 508 | memSBase = mmap((caddr_t) 0, 0x100000000, |
| 509 | PROT_READ | PROT_WRITE, |
| 510 | MAP_SHARED, devMemFd, (off_t) BUS_BASE_BWX); |
| 511 | |
| 512 | if (memSBase == MAP_FAILED || memBase == MAP_FAILED) { |
| 513 | FatalError("xf86MapVidMem: Could not mmap framebuffer (%s)\n", |
| 514 | strerror(errno)); |
| 515 | } |
| 516 | } |
| 517 | return (pointer) ((unsigned long) memBase + Base); |
| 518 | } |
| 519 | |
| 520 | static void |
| 521 | unmapVidMemSparse(int ScreenNum, pointer Base, unsigned long Size) |
| 522 | { |
| 523 | } |
| 524 | |
| 525 | static int |
| 526 | readSparse8(pointer Base, register unsigned long Offset) |
| 527 | { |
| 528 | register unsigned long result, shift; |
| 529 | register unsigned long msb; |
| 530 | |
| 531 | mem_barrier(); |
| 532 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 533 | shift = (Offset & 0x3) << 3; |
| 534 | if (Offset >= (hae_thresh)) { |
| 535 | msb = Offset & hae_mask; |
| 536 | Offset -= msb; |
| 537 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 538 | sethae(msb); |
| 539 | #endif |
| 540 | } |
| 541 | result = *(vuip) ((unsigned long) memSBase + (Offset << 5)); |
| 542 | result >>= shift; |
| 543 | return 0xffUL & result; |
| 544 | } |
| 545 | |
| 546 | static int |
| 547 | readSparse16(pointer Base, register unsigned long Offset) |
| 548 | { |
| 549 | register unsigned long result, shift; |
| 550 | register unsigned long msb; |
| 551 | |
| 552 | mem_barrier(); |
| 553 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 554 | shift = (Offset & 0x2) << 3; |
| 555 | if (Offset >= (hae_thresh)) { |
| 556 | msb = Offset & hae_mask; |
| 557 | Offset -= msb; |
| 558 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 559 | sethae(msb); |
| 560 | #endif |
| 561 | } |
| 562 | result = |
| 563 | *(vuip) ((unsigned long) memSBase + (Offset << 5) + (1 << (5 - 2))); |
| 564 | result >>= shift; |
| 565 | return 0xffffUL & result; |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | readSparse32(pointer Base, register unsigned long Offset) |
| 570 | { |
| 571 | mem_barrier(); |
| 572 | return *(vuip) ((unsigned long) Base + (Offset)); |
| 573 | } |
| 574 | |
| 575 | static void |
| 576 | writeSparse8(int Value, pointer Base, register unsigned long Offset) |
| 577 | { |
| 578 | register unsigned long msb; |
| 579 | register unsigned int b = Value & 0xffU; |
| 580 | |
| 581 | write_mem_barrier(); |
| 582 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 583 | if (Offset >= (hae_thresh)) { |
| 584 | msb = Offset & hae_mask; |
| 585 | Offset -= msb; |
| 586 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 587 | sethae(msb); |
| 588 | #endif |
| 589 | } |
| 590 | *(vuip) ((unsigned long) memSBase + (Offset << 5)) = b * 0x01010101; |
| 591 | } |
| 592 | |
| 593 | static void |
| 594 | writeSparse16(int Value, pointer Base, register unsigned long Offset) |
| 595 | { |
| 596 | register unsigned long msb; |
| 597 | register unsigned int w = Value & 0xffffU; |
| 598 | |
| 599 | write_mem_barrier(); |
| 600 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 601 | if (Offset >= (hae_thresh)) { |
| 602 | msb = Offset & hae_mask; |
| 603 | Offset -= msb; |
| 604 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 605 | sethae(msb); |
| 606 | #endif |
| 607 | } |
| 608 | *(vuip) ((unsigned long) memSBase + (Offset << 5) + (1 << (5 - 2))) = |
| 609 | w * 0x00010001; |
| 610 | |
| 611 | } |
| 612 | |
| 613 | static void |
| 614 | writeSparse32(int Value, pointer Base, register unsigned long Offset) |
| 615 | { |
| 616 | write_mem_barrier(); |
| 617 | *(vuip) ((unsigned long) Base + (Offset)) = Value; |
| 618 | return; |
| 619 | } |
| 620 | |
| 621 | static void |
| 622 | writeSparseNB8(int Value, pointer Base, register unsigned long Offset) |
| 623 | { |
| 624 | register unsigned long msb; |
| 625 | register unsigned int b = Value & 0xffU; |
| 626 | |
| 627 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 628 | if (Offset >= (hae_thresh)) { |
| 629 | msb = Offset & hae_mask; |
| 630 | Offset -= msb; |
| 631 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 632 | sethae(msb); |
| 633 | #endif |
| 634 | } |
| 635 | *(vuip) ((unsigned long) memSBase + (Offset << 5)) = b * 0x01010101; |
| 636 | } |
| 637 | |
| 638 | static void |
| 639 | writeSparseNB16(int Value, pointer Base, register unsigned long Offset) |
| 640 | { |
| 641 | register unsigned long msb; |
| 642 | register unsigned int w = Value & 0xffffU; |
| 643 | |
| 644 | Offset += (unsigned long) Base - (unsigned long) memBase; |
| 645 | if (Offset >= (hae_thresh)) { |
| 646 | msb = Offset & hae_mask; |
| 647 | Offset -= msb; |
| 648 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 649 | sethae(msb); |
| 650 | #endif |
| 651 | } |
| 652 | *(vuip) ((unsigned long) memSBase + (Offset << 5) + (1 << (5 - 2))) = |
| 653 | w * 0x00010001; |
| 654 | } |
| 655 | |
| 656 | static void |
| 657 | writeSparseNB32(int Value, pointer Base, register unsigned long Offset) |
| 658 | { |
| 659 | *(vuip) ((unsigned long) Base + (Offset)) = Value; |
| 660 | return; |
| 661 | } |
| 662 | |
| 663 | void (*xf86WriteMmio8) (int Value, pointer Base, unsigned long Offset) |
| 664 | = writeDense8; |
| 665 | void (*xf86WriteMmio16) (int Value, pointer Base, unsigned long Offset) |
| 666 | = writeDense16; |
| 667 | void (*xf86WriteMmio32) (int Value, pointer Base, unsigned long Offset) |
| 668 | = writeDense32; |
| 669 | void (*xf86WriteMmioNB8) (int Value, pointer Base, unsigned long Offset) |
| 670 | = writeDenseNB8; |
| 671 | void (*xf86WriteMmioNB16) (int Value, pointer Base, unsigned long Offset) |
| 672 | = writeDenseNB16; |
| 673 | void (*xf86WriteMmioNB32) (int Value, pointer Base, unsigned long Offset) |
| 674 | = writeDenseNB32; |
| 675 | int (*xf86ReadMmio8) (pointer Base, unsigned long Offset) |
| 676 | = readDense8; |
| 677 | int (*xf86ReadMmio16) (pointer Base, unsigned long Offset) |
| 678 | = readDense16; |
| 679 | int (*xf86ReadMmio32) (pointer Base, unsigned long Offset) |
| 680 | = readDense32; |