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sys/dev/exca/exca.c
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1 /*- 2 * Copyright (c) 2002-2005 M Warner Losh. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * 24 * This software may be derived from NetBSD i82365.c and other files with 25 * the following copyright: 26 * 27 * Copyright (c) 1997 Marc Horowitz. All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 1. Redistributions of source code must retain the above copyright 33 * notice, this list of conditions and the following disclaimer. 34 * 2. Redistributions in binary form must reproduce the above copyright 35 * notice, this list of conditions and the following disclaimer in the 36 * documentation and/or other materials provided with the distribution. 37 * 3. All advertising materials mentioning features or use of this software 38 * must display the following acknowledgement: 39 * This product includes software developed by Marc Horowitz. 40 * 4. The name of the author may not be used to endorse or promote products 41 * derived from this software without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 */ 54 55 #include <sys/cdefs.h> 56 __FBSDID("$FreeBSD: releng/9.0/sys/dev/exca/exca.c 189579 2009-03-09 13:29:13Z imp $"); 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/condvar.h> 61 #include <sys/errno.h> 62 #include <sys/kernel.h> 63 #include <sys/malloc.h> 64 #include <sys/queue.h> 65 #include <sys/module.h> 66 #include <sys/lock.h> 67 #include <sys/mutex.h> 68 #include <sys/conf.h> 69 70 #include <sys/bus.h> 71 #include <machine/bus.h> 72 #include <sys/rman.h> 73 #include <machine/resource.h> 74 75 #include <dev/pccard/pccardreg.h> 76 #include <dev/pccard/pccardvar.h> 77 78 #include <dev/exca/excareg.h> 79 #include <dev/exca/excavar.h> 80 81 #ifdef EXCA_DEBUG 82 #define DEVPRINTF(dev, fmt, args...) device_printf((dev), (fmt), ## args) 83 #define DPRINTF(fmt, args...) printf(fmt, ## args) 84 #else 85 #define DEVPRINTF(dev, fmt, args...) 86 #define DPRINTF(fmt, args...) 87 #endif 88 89 static const char *chip_names[] = 90 { 91 "CardBus socket", 92 "Intel i82365SL-A/B or clone", 93 "Intel i82365sl-DF step", 94 "VLSI chip", 95 "Cirrus Logic PD6710", 96 "Cirrus logic PD6722", 97 "Cirrus Logic PD6729", 98 "Vadem 365", 99 "Vadem 465", 100 "Vadem 468", 101 "Vadem 469", 102 "Ricoh RF5C296", 103 "Ricoh RF5C396", 104 "IBM clone", 105 "IBM KING PCMCIA Controller" 106 }; 107 108 static exca_getb_fn exca_mem_getb; 109 static exca_putb_fn exca_mem_putb; 110 static exca_getb_fn exca_io_getb; 111 static exca_putb_fn exca_io_putb; 112 113 /* memory */ 114 115 #define EXCA_MEMINFO(NUM) { \ 116 EXCA_SYSMEM_ADDR ## NUM ## _START_LSB, \ 117 EXCA_SYSMEM_ADDR ## NUM ## _START_MSB, \ 118 EXCA_SYSMEM_ADDR ## NUM ## _STOP_LSB, \ 119 EXCA_SYSMEM_ADDR ## NUM ## _STOP_MSB, \ 120 EXCA_SYSMEM_ADDR ## NUM ## _WIN, \ 121 EXCA_CARDMEM_ADDR ## NUM ## _LSB, \ 122 EXCA_CARDMEM_ADDR ## NUM ## _MSB, \ 123 EXCA_ADDRWIN_ENABLE_MEM ## NUM, \ 124 } 125 126 static struct mem_map_index_st { 127 int sysmem_start_lsb; 128 int sysmem_start_msb; 129 int sysmem_stop_lsb; 130 int sysmem_stop_msb; 131 int sysmem_win; 132 int cardmem_lsb; 133 int cardmem_msb; 134 int memenable; 135 } mem_map_index[] = { 136 EXCA_MEMINFO(0), 137 EXCA_MEMINFO(1), 138 EXCA_MEMINFO(2), 139 EXCA_MEMINFO(3), 140 EXCA_MEMINFO(4) 141 }; 142 #undef EXCA_MEMINFO 143 144 static uint8_t 145 exca_mem_getb(struct exca_softc *sc, int reg) 146 { 147 return (bus_space_read_1(sc->bst, sc->bsh, sc->offset + reg)); 148 } 149 150 static void 151 exca_mem_putb(struct exca_softc *sc, int reg, uint8_t val) 152 { 153 bus_space_write_1(sc->bst, sc->bsh, sc->offset + reg, val); 154 } 155 156 static uint8_t 157 exca_io_getb(struct exca_softc *sc, int reg) 158 { 159 bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset); 160 return (bus_space_read_1(sc->bst, sc->bsh, EXCA_REG_DATA)); 161 } 162 163 static void 164 exca_io_putb(struct exca_softc *sc, int reg, uint8_t val) 165 { 166 bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset); 167 bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_DATA, val); 168 } 169 170 /* 171 * Helper function. This will map the requested memory slot. We setup the 172 * map before we call this function. This is used to initially force the 173 * mapping, as well as later restore the mapping after it has been destroyed 174 * in some fashion (due to a power event typically). 175 */ 176 static void 177 exca_do_mem_map(struct exca_softc *sc, int win) 178 { 179 struct mem_map_index_st *map; 180 struct pccard_mem_handle *mem; 181 uint32_t offset; 182 uint32_t mem16; 183 uint32_t attrmem; 184 185 map = &mem_map_index[win]; 186 mem = &sc->mem[win]; 187 mem16 = (mem->kind & PCCARD_MEM_16BIT) ? 188 EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_16BIT : 0; 189 attrmem = (mem->kind & PCCARD_MEM_ATTR) ? 190 EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_ATTR : 0; 191 offset = ((mem->cardaddr >> EXCA_CARDMEM_ADDRX_SHIFT) - 192 (mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT)) & 0x3fff; 193 exca_putb(sc, map->sysmem_start_lsb, 194 mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT); 195 exca_putb(sc, map->sysmem_start_msb, 196 ((mem->addr >> (EXCA_SYSMEM_ADDRX_SHIFT + 8)) & 197 EXCA_SYSMEM_ADDRX_START_MSB_ADDR_MASK) | mem16); 198 199 exca_putb(sc, map->sysmem_stop_lsb, 200 (mem->addr + mem->realsize - 1) >> EXCA_SYSMEM_ADDRX_SHIFT); 201 exca_putb(sc, map->sysmem_stop_msb, 202 (((mem->addr + mem->realsize - 1) >> 203 (EXCA_SYSMEM_ADDRX_SHIFT + 8)) & 204 EXCA_SYSMEM_ADDRX_STOP_MSB_ADDR_MASK) | 205 EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT2); 206 exca_putb(sc, map->sysmem_win, mem->addr >> EXCA_MEMREG_WIN_SHIFT); 207 208 exca_putb(sc, map->cardmem_lsb, offset & 0xff); 209 exca_putb(sc, map->cardmem_msb, ((offset >> 8) & 210 EXCA_CARDMEM_ADDRX_MSB_ADDR_MASK) | attrmem); 211 212 DPRINTF("%s %d-bit memory", 213 mem->kind & PCCARD_MEM_ATTR ? "attribute" : "common", 214 mem->kind & PCCARD_MEM_16BIT ? 16 : 8); 215 exca_setb(sc, EXCA_ADDRWIN_ENABLE, map->memenable | 216 EXCA_ADDRWIN_ENABLE_MEMCS16); 217 218 DELAY(100); 219 #ifdef EXCA_DEBUG 220 { 221 int r1, r2, r3, r4, r5, r6, r7; 222 r1 = exca_getb(sc, map->sysmem_start_msb); 223 r2 = exca_getb(sc, map->sysmem_start_lsb); 224 r3 = exca_getb(sc, map->sysmem_stop_msb); 225 r4 = exca_getb(sc, map->sysmem_stop_lsb); 226 r5 = exca_getb(sc, map->cardmem_msb); 227 r6 = exca_getb(sc, map->cardmem_lsb); 228 r7 = exca_getb(sc, map->sysmem_win); 229 printf("exca_do_mem_map win %d: %#02x%#02x %#02x%#02x " 230 "%#02x%#02x %#02x (%#08x+%#06x.%#06x*%#06x) flags %#x\n", 231 win, r1, r2, r3, r4, r5, r6, r7, 232 mem->addr, mem->size, mem->realsize, 233 mem->cardaddr, mem->kind); 234 } 235 #endif 236 } 237 238 /* 239 * public interface to map a resource. kind is the type of memory to 240 * map (either common or attribute). Memory created via this interface 241 * starts out at card address 0. Since the only way to set this is 242 * to set it on a struct resource after it has been mapped, we're safe 243 * in maping this assumption. Note that resources can be remapped using 244 * exca_do_mem_map so that's how the card address can be set later. 245 */ 246 int 247 exca_mem_map(struct exca_softc *sc, int kind, struct resource *res) 248 { 249 int win; 250 251 for (win = 0; win < EXCA_MEM_WINS; win++) { 252 if ((sc->memalloc & (1 << win)) == 0) { 253 sc->memalloc |= (1 << win); 254 break; 255 } 256 } 257 if (win >= EXCA_MEM_WINS) 258 return (ENOSPC); 259 if (sc->flags & EXCA_HAS_MEMREG_WIN) { 260 #ifdef __LP64__ 261 if (rman_get_start(res) >> (EXCA_MEMREG_WIN_SHIFT + 8) != 0) { 262 device_printf(sc->dev, 263 "Does not support mapping above 4GB."); 264 return (EINVAL); 265 } 266 #endif 267 } else { 268 if (rman_get_start(res) >> EXCA_MEMREG_WIN_SHIFT != 0) { 269 device_printf(sc->dev, 270 "Does not support mapping above 16M."); 271 return (EINVAL); 272 } 273 } 274 275 sc->mem[win].cardaddr = 0; 276 sc->mem[win].memt = rman_get_bustag(res); 277 sc->mem[win].memh = rman_get_bushandle(res); 278 sc->mem[win].addr = rman_get_start(res); 279 sc->mem[win].size = rman_get_end(res) - sc->mem[win].addr + 1; 280 sc->mem[win].realsize = sc->mem[win].size + EXCA_MEM_PAGESIZE - 1; 281 sc->mem[win].realsize = sc->mem[win].realsize - 282 (sc->mem[win].realsize % EXCA_MEM_PAGESIZE); 283 sc->mem[win].kind = kind; 284 DPRINTF("exca_mem_map window %d bus %x+%x card addr %x\n", 285 win, sc->mem[win].addr, sc->mem[win].size, sc->mem[win].cardaddr); 286 exca_do_mem_map(sc, win); 287 288 return (0); 289 } 290 291 /* 292 * Private helper function. This turns off a given memory map that is in 293 * use. We do this by just clearing the enable bit in the pcic. If we needed 294 * to make memory unmapping/mapping pairs faster, we would have to store 295 * more state information about the pcic and then use that to intelligently 296 * to the map/unmap. However, since we don't do that sort of thing often 297 * (generally just at configure time), it isn't a case worth optimizing. 298 */ 299 static void 300 exca_mem_unmap(struct exca_softc *sc, int window) 301 { 302 if (window < 0 || window >= EXCA_MEM_WINS) 303 panic("exca_mem_unmap: window out of range"); 304 305 exca_clrb(sc, EXCA_ADDRWIN_ENABLE, mem_map_index[window].memenable); 306 sc->memalloc &= ~(1 << window); 307 } 308 309 /* 310 * Find the map that we're using to hold the resource. This works well 311 * so long as the client drivers don't do silly things like map the same 312 * area mutliple times, or map both common and attribute memory at the 313 * same time. This latter restriction is a bug. We likely should just 314 * store a pointer to the res in the mem[x] data structure. 315 */ 316 static int 317 exca_mem_findmap(struct exca_softc *sc, struct resource *res) 318 { 319 int win; 320 321 for (win = 0; win < EXCA_MEM_WINS; win++) { 322 if (sc->mem[win].memt == rman_get_bustag(res) && 323 sc->mem[win].addr == rman_get_start(res) && 324 sc->mem[win].size == rman_get_size(res)) 325 return (win); 326 } 327 return (-1); 328 } 329 330 /* 331 * Set the memory flag. This means that we are setting if the memory 332 * is coming from attribute memory or from common memory on the card. 333 * CIS entries are generally in attribute memory (although they can 334 * reside in common memory). Generally, this is the only use for attribute 335 * memory. However, some cards require their drivers to dance in both 336 * common and/or attribute memory and this interface (and setting the 337 * offset interface) exist for such cards. 338 */ 339 int 340 exca_mem_set_flags(struct exca_softc *sc, struct resource *res, uint32_t flags) 341 { 342 int win; 343 344 win = exca_mem_findmap(sc, res); 345 if (win < 0) { 346 device_printf(sc->dev, 347 "set_res_flags: specified resource not active\n"); 348 return (ENOENT); 349 } 350 351 switch (flags) 352 { 353 case PCCARD_A_MEM_ATTR: 354 sc->mem[win].kind |= PCCARD_MEM_ATTR; 355 break; 356 case PCCARD_A_MEM_COM: 357 sc->mem[win].kind &= ~PCCARD_MEM_ATTR; 358 break; 359 case PCCARD_A_MEM_16BIT: 360 sc->mem[win].kind |= PCCARD_MEM_16BIT; 361 break; 362 case PCCARD_A_MEM_8BIT: 363 sc->mem[win].kind &= ~PCCARD_MEM_16BIT; 364 break; 365 } 366 exca_do_mem_map(sc, win); 367 return (0); 368 } 369 370 /* 371 * Given a resource, go ahead and unmap it if we can find it in the 372 * resrouce list that's used. 373 */ 374 int 375 exca_mem_unmap_res(struct exca_softc *sc, struct resource *res) 376 { 377 int win; 378 379 win = exca_mem_findmap(sc, res); 380 if (win < 0) 381 return (ENOENT); 382 exca_mem_unmap(sc, win); 383 return (0); 384 } 385 386 /* 387 * Set the offset of the memory. We use this for reading the CIS and 388 * frobbing the pccard's pccard registers (CCR, etc). Some drivers 389 * need to access arbitrary attribute and common memory during their 390 * initialization and operation. 391 */ 392 int 393 exca_mem_set_offset(struct exca_softc *sc, struct resource *res, 394 uint32_t cardaddr, uint32_t *deltap) 395 { 396 int win; 397 uint32_t delta; 398 399 win = exca_mem_findmap(sc, res); 400 if (win < 0) { 401 device_printf(sc->dev, 402 "set_memory_offset: specified resource not active\n"); 403 return (ENOENT); 404 } 405 sc->mem[win].cardaddr = cardaddr & ~(EXCA_MEM_PAGESIZE - 1); 406 delta = cardaddr % EXCA_MEM_PAGESIZE; 407 if (deltap) 408 *deltap = delta; 409 sc->mem[win].realsize = sc->mem[win].size + delta + 410 EXCA_MEM_PAGESIZE - 1; 411 sc->mem[win].realsize = sc->mem[win].realsize - 412 (sc->mem[win].realsize % EXCA_MEM_PAGESIZE); 413 exca_do_mem_map(sc, win); 414 return (0); 415 } 416 417 418 /* I/O */ 419 420 #define EXCA_IOINFO(NUM) { \ 421 EXCA_IOADDR ## NUM ## _START_LSB, \ 422 EXCA_IOADDR ## NUM ## _START_MSB, \ 423 EXCA_IOADDR ## NUM ## _STOP_LSB, \ 424 EXCA_IOADDR ## NUM ## _STOP_MSB, \ 425 EXCA_ADDRWIN_ENABLE_IO ## NUM, \ 426 EXCA_IOCTL_IO ## NUM ## _WAITSTATE \ 427 | EXCA_IOCTL_IO ## NUM ## _ZEROWAIT \ 428 | EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_MASK \ 429 | EXCA_IOCTL_IO ## NUM ## _DATASIZE_MASK, \ 430 { \ 431 EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_CARD, \ 432 EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_DATASIZE \ 433 | EXCA_IOCTL_IO ## NUM ## _DATASIZE_8BIT, \ 434 EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_DATASIZE \ 435 | EXCA_IOCTL_IO ## NUM ## _DATASIZE_16BIT, \ 436 } \ 437 } 438 439 static struct io_map_index_st { 440 int start_lsb; 441 int start_msb; 442 int stop_lsb; 443 int stop_msb; 444 int ioenable; 445 int ioctlmask; 446 int ioctlbits[3]; /* indexed by PCCARD_WIDTH_* */ 447 } io_map_index[] = { 448 EXCA_IOINFO(0), 449 EXCA_IOINFO(1), 450 }; 451 #undef EXCA_IOINFO 452 453 static void 454 exca_do_io_map(struct exca_softc *sc, int win) 455 { 456 struct io_map_index_st *map; 457 458 struct pccard_io_handle *io; 459 460 map = &io_map_index[win]; 461 io = &sc->io[win]; 462 exca_putb(sc, map->start_lsb, io->addr & 0xff); 463 exca_putb(sc, map->start_msb, (io->addr >> 8) & 0xff); 464 465 exca_putb(sc, map->stop_lsb, (io->addr + io->size - 1) & 0xff); 466 exca_putb(sc, map->stop_msb, ((io->addr + io->size - 1) >> 8) & 0xff); 467 468 exca_clrb(sc, EXCA_IOCTL, map->ioctlmask); 469 exca_setb(sc, EXCA_IOCTL, map->ioctlbits[io->width]); 470 471 exca_setb(sc, EXCA_ADDRWIN_ENABLE, map->ioenable); 472 #ifdef EXCA_DEBUG 473 { 474 int r1, r2, r3, r4; 475 r1 = exca_getb(sc, map->start_msb); 476 r2 = exca_getb(sc, map->start_lsb); 477 r3 = exca_getb(sc, map->stop_msb); 478 r4 = exca_getb(sc, map->stop_lsb); 479 DPRINTF("exca_do_io_map window %d: %02x%02x %02x%02x " 480 "(%08x+%08x)\n", win, r1, r2, r3, r4, 481 io->addr, io->size); 482 } 483 #endif 484 } 485 486 int 487 exca_io_map(struct exca_softc *sc, int width, struct resource *r) 488 { 489 int win; 490 #ifdef EXCA_DEBUG 491 static char *width_names[] = { "auto", "io8", "io16"}; 492 #endif 493 for (win=0; win < EXCA_IO_WINS; win++) { 494 if ((sc->ioalloc & (1 << win)) == 0) { 495 sc->ioalloc |= (1 << win); 496 break; 497 } 498 } 499 if (win >= EXCA_IO_WINS) 500 return (ENOSPC); 501 502 sc->io[win].iot = rman_get_bustag(r); 503 sc->io[win].ioh = rman_get_bushandle(r); 504 sc->io[win].addr = rman_get_start(r); 505 sc->io[win].size = rman_get_end(r) - sc->io[win].addr + 1; 506 sc->io[win].flags = 0; 507 sc->io[win].width = width; 508 DPRINTF("exca_io_map window %d %s port %x+%x\n", 509 win, width_names[width], sc->io[win].addr, 510 sc->io[win].size); 511 exca_do_io_map(sc, win); 512 513 return (0); 514 } 515 516 static void 517 exca_io_unmap(struct exca_softc *sc, int window) 518 { 519 if (window >= EXCA_IO_WINS) 520 panic("exca_io_unmap: window out of range"); 521 522 exca_clrb(sc, EXCA_ADDRWIN_ENABLE, io_map_index[window].ioenable); 523 524 sc->ioalloc &= ~(1 << window); 525 526 sc->io[window].iot = 0; 527 sc->io[window].ioh = 0; 528 sc->io[window].addr = 0; 529 sc->io[window].size = 0; 530 sc->io[window].flags = 0; 531 sc->io[window].width = 0; 532 } 533 534 static int 535 exca_io_findmap(struct exca_softc *sc, struct resource *res) 536 { 537 int win; 538 539 for (win = 0; win < EXCA_IO_WINS; win++) { 540 if (sc->io[win].iot == rman_get_bustag(res) && 541 sc->io[win].addr == rman_get_start(res) && 542 sc->io[win].size == rman_get_size(res)) 543 return (win); 544 } 545 return (-1); 546 } 547 548 549 int 550 exca_io_unmap_res(struct exca_softc *sc, struct resource *res) 551 { 552 int win; 553 554 win = exca_io_findmap(sc, res); 555 if (win < 0) 556 return (ENOENT); 557 exca_io_unmap(sc, win); 558 return (0); 559 } 560 561 /* Misc */ 562 563 /* 564 * If interrupts are enabled, then we should be able to just wait for 565 * an interrupt routine to wake us up. Busy waiting shouldn't be 566 * necessary. Sadly, not all legacy ISA cards support an interrupt 567 * for the busy state transitions, at least according to their datasheets, 568 * so we busy wait a while here.. 569 */ 570 static void 571 exca_wait_ready(struct exca_softc *sc) 572 { 573 int i; 574 DEVPRINTF(sc->dev, "exca_wait_ready: status 0x%02x\n", 575 exca_getb(sc, EXCA_IF_STATUS)); 576 for (i = 0; i < 10000; i++) { 577 if (exca_getb(sc, EXCA_IF_STATUS) & EXCA_IF_STATUS_READY) 578 return; 579 DELAY(500); 580 } 581 device_printf(sc->dev, "ready never happened, status = %02x\n", 582 exca_getb(sc, EXCA_IF_STATUS)); 583 } 584 585 /* 586 * Reset the card. Ideally, we'd do a lot of this via interrupts. 587 * However, many PC Cards will deassert the ready signal. This means 588 * that they are asserting an interrupt. This makes it hard to 589 * do anything but a busy wait here. One could argue that these 590 * such cards are broken, or that the bridge that allows this sort 591 * of interrupt through isn't quite what you'd want (and may be a standards 592 * violation). However, such arguing would leave a huge class of PC Cards 593 * and bridges out of reach for use in the system. 594 * 595 * Maybe I should reevaluate the above based on the power bug I fixed 596 * in OLDCARD. 597 */ 598 void 599 exca_reset(struct exca_softc *sc, device_t child) 600 { 601 int win; 602 603 /* enable socket i/o */ 604 exca_setb(sc, EXCA_PWRCTL, EXCA_PWRCTL_OE); 605 606 exca_putb(sc, EXCA_INTR, EXCA_INTR_ENABLE); 607 /* hold reset for 30ms */ 608 DELAY(30*1000); 609 /* clear the reset flag */ 610 exca_setb(sc, EXCA_INTR, EXCA_INTR_RESET); 611 /* wait 20ms as per PC Card standard (r2.01) section 4.3.6 */ 612 DELAY(20*1000); 613 614 exca_wait_ready(sc); 615 616 /* disable all address windows */ 617 exca_putb(sc, EXCA_ADDRWIN_ENABLE, 0); 618 619 exca_setb(sc, EXCA_INTR, EXCA_INTR_CARDTYPE_IO); 620 DEVPRINTF(sc->dev, "card type is io\n"); 621 622 /* reinstall all the memory and io mappings */ 623 for (win = 0; win < EXCA_MEM_WINS; ++win) 624 if (sc->memalloc & (1 << win)) 625 exca_do_mem_map(sc, win); 626 for (win = 0; win < EXCA_IO_WINS; ++win) 627 if (sc->ioalloc & (1 << win)) 628 exca_do_io_map(sc, win); 629 } 630 631 /* 632 * Initialize the exca_softc data structure for the first time. 633 */ 634 void 635 exca_init(struct exca_softc *sc, device_t dev, 636 bus_space_tag_t bst, bus_space_handle_t bsh, uint32_t offset) 637 { 638 sc->dev = dev; 639 sc->memalloc = 0; 640 sc->ioalloc = 0; 641 sc->bst = bst; 642 sc->bsh = bsh; 643 sc->offset = offset; 644 sc->flags = 0; 645 sc->getb = exca_mem_getb; 646 sc->putb = exca_mem_putb; 647 } 648 649 /* 650 * Is this socket valid? 651 */ 652 static int 653 exca_valid_slot(struct exca_softc *exca) 654 { 655 uint8_t c; 656 657 /* Assume the worst */ 658 exca->chipset = EXCA_BOGUS; 659 660 /* 661 * see if there's a PCMCIA controller here 662 * Intel PCMCIA controllers use 0x82 and 0x83 663 * IBM clone chips use 0x88 and 0x89, apparently 664 */ 665 c = exca_getb(exca, EXCA_IDENT); 666 DEVPRINTF(exca->dev, "Ident is %x\n", c); 667 if ((c & EXCA_IDENT_IFTYPE_MASK) != EXCA_IDENT_IFTYPE_MEM_AND_IO) 668 return (0); 669 if ((c & EXCA_IDENT_ZERO) != 0) 670 return (0); 671 switch (c & EXCA_IDENT_REV_MASK) { 672 /* 673 * 82365 or clones. 674 */ 675 case EXCA_IDENT_REV_I82365SLR0: 676 case EXCA_IDENT_REV_I82365SLR1: 677 exca->chipset = EXCA_I82365; 678 /* 679 * Check for Vadem chips by unlocking their extra 680 * registers and looking for valid ID. Bit 3 in 681 * the ID register is normally 0, except when 682 * EXCA_VADEMREV is set. Other bridges appear 683 * to ignore this frobbing. 684 */ 685 bus_space_write_1(exca->bst, exca->bsh, EXCA_REG_INDEX, 686 EXCA_VADEM_COOKIE1); 687 bus_space_write_1(exca->bst, exca->bsh, EXCA_REG_INDEX, 688 EXCA_VADEM_COOKIE2); 689 exca_setb(exca, EXCA_VADEM_VMISC, EXCA_VADEM_REV); 690 c = exca_getb(exca, EXCA_IDENT); 691 if (c & 0x08) { 692 switch (c & 7) { 693 case 1: 694 exca->chipset = EXCA_VG365; 695 break; 696 case 2: 697 exca->chipset = EXCA_VG465; 698 break; 699 case 3: 700 exca->chipset = EXCA_VG468; 701 break; 702 default: 703 exca->chipset = EXCA_VG469; 704 break; 705 } 706 exca_clrb(exca, EXCA_VADEM_VMISC, EXCA_VADEM_REV); 707 break; 708 } 709 /* 710 * Check for RICOH RF5C[23]96 PCMCIA Controller 711 */ 712 c = exca_getb(exca, EXCA_RICOH_ID); 713 if (c == EXCA_RID_396) { 714 exca->chipset = EXCA_RF5C396; 715 break; 716 } else if (c == EXCA_RID_296) { 717 exca->chipset = EXCA_RF5C296; 718 break; 719 } 720 /* 721 * Check for Cirrus logic chips. 722 */ 723 exca_putb(exca, EXCA_CIRRUS_CHIP_INFO, 0); 724 c = exca_getb(exca, EXCA_CIRRUS_CHIP_INFO); 725 if ((c & EXCA_CIRRUS_CHIP_INFO_CHIP_ID) == 726 EXCA_CIRRUS_CHIP_INFO_CHIP_ID) { 727 c = exca_getb(exca, EXCA_CIRRUS_CHIP_INFO); 728 if ((c & EXCA_CIRRUS_CHIP_INFO_CHIP_ID) == 0) { 729 if (c & EXCA_CIRRUS_CHIP_INFO_SLOTS) 730 exca->chipset = EXCA_PD6722; 731 else 732 exca->chipset = EXCA_PD6710; 733 break; 734 } 735 } 736 break; 737 738 case EXCA_IDENT_REV_I82365SLDF: 739 /* 740 * Intel i82365sl-DF step or maybe a vlsi 82c146 741 * we detected the vlsi case earlier, so if the controller 742 * isn't set, we know it is a i82365sl step D. 743 */ 744 exca->chipset = EXCA_I82365SL_DF; 745 break; 746 case EXCA_IDENT_REV_IBM1: 747 case EXCA_IDENT_REV_IBM2: 748 exca->chipset = EXCA_IBM; 749 break; 750 case EXCA_IDENT_REV_IBM_KING: 751 exca->chipset = EXCA_IBM_KING; 752 break; 753 default: 754 return (0); 755 } 756 return (1); 757 } 758 759 /* 760 * Probe the expected slots. We maybe should set the ID for each of these 761 * slots too while we're at it. But maybe that belongs to a separate 762 * function. 763 * 764 * The caller must guarantee that at least EXCA_NSLOTS are present in exca. 765 */ 766 int 767 exca_probe_slots(device_t dev, struct exca_softc *exca, bus_space_tag_t iot, 768 bus_space_handle_t ioh) 769 { 770 int err; 771 int i; 772 773 err = ENXIO; 774 for (i = 0; i < EXCA_NSLOTS; i++) { 775 exca_init(&exca[i], dev, iot, ioh, i * EXCA_SOCKET_SIZE); 776 exca->getb = exca_io_getb; 777 exca->putb = exca_io_putb; 778 if (exca_valid_slot(&exca[i])) { 779 device_set_desc(dev, chip_names[exca[i].chipset]); 780 err = 0; 781 } 782 } 783 return (err); 784 } 785 786 void 787 exca_insert(struct exca_softc *exca) 788 { 789 if (device_is_attached(exca->pccarddev)) { 790 if (CARD_ATTACH_CARD(exca->pccarddev) != 0) 791 device_printf(exca->dev, 792 "PC Card card activation failed\n"); 793 } else { 794 device_printf(exca->dev, 795 "PC Card inserted, but no pccard bus.\n"); 796 } 797 } 798 799 800 void 801 exca_removal(struct exca_softc *exca) 802 { 803 if (device_is_attached(exca->pccarddev)) 804 CARD_DETACH_CARD(exca->pccarddev); 805 } 806 807 int 808 exca_activate_resource(struct exca_softc *exca, device_t child, int type, 809 int rid, struct resource *res) 810 { 811 int err; 812 813 if (rman_get_flags(res) & RF_ACTIVE) 814 return (0); 815 err = BUS_ACTIVATE_RESOURCE(device_get_parent(exca->dev), child, 816 type, rid, res); 817 if (err) 818 return (err); 819 switch (type) { 820 case SYS_RES_IOPORT: 821 err = exca_io_map(exca, PCCARD_WIDTH_AUTO, res); 822 break; 823 case SYS_RES_MEMORY: 824 err = exca_mem_map(exca, 0, res); 825 break; 826 } 827 if (err) 828 BUS_DEACTIVATE_RESOURCE(device_get_parent(exca->dev), child, 829 type, rid, res); 830 return (err); 831 } 832 833 int 834 exca_deactivate_resource(struct exca_softc *exca, device_t child, int type, 835 int rid, struct resource *res) 836 { 837 if (rman_get_flags(res) & RF_ACTIVE) { /* if activated */ 838 switch (type) { 839 case SYS_RES_IOPORT: 840 if (exca_io_unmap_res(exca, res)) 841 return (ENOENT); 842 break; 843 case SYS_RES_MEMORY: 844 if (exca_mem_unmap_res(exca, res)) 845 return (ENOENT); 846 break; 847 } 848 } 849 return (BUS_DEACTIVATE_RESOURCE(device_get_parent(exca->dev), child, 850 type, rid, res)); 851 } 852 853 #if 0 854 static struct resource * 855 exca_alloc_resource(struct exca_softc *sc, device_t child, int type, int *rid, 856 u_long start, u_long end, u_long count, uint flags) 857 { 858 struct resource *res = NULL; 859 int tmp; 860 861 switch (type) { 862 case SYS_RES_MEMORY: 863 if (start < cbb_start_mem) 864 start = cbb_start_mem; 865 if (end < start) 866 end = start; 867 flags = (flags & ~RF_ALIGNMENT_MASK) | 868 rman_make_alignment_flags(CBB_MEMALIGN); 869 break; 870 case SYS_RES_IOPORT: 871 if (start < cbb_start_16_io) 872 start = cbb_start_16_io; 873 if (end < start) 874 end = start; 875 break; 876 case SYS_RES_IRQ: 877 tmp = rman_get_start(sc->irq_res); 878 if (start > tmp || end < tmp || count != 1) { 879 device_printf(child, "requested interrupt %ld-%ld," 880 "count = %ld not supported by cbb\n", 881 start, end, count); 882 return (NULL); 883 } 884 flags |= RF_SHAREABLE; 885 start = end = rman_get_start(sc->irq_res); 886 break; 887 } 888 res = BUS_ALLOC_RESOURCE(up, child, type, rid, 889 start, end, count, flags & ~RF_ACTIVE); 890 if (res == NULL) 891 return (NULL); 892 cbb_insert_res(sc, res, type, *rid); 893 if (flags & RF_ACTIVE) { 894 if (bus_activate_resource(child, type, *rid, res) != 0) { 895 bus_release_resource(child, type, *rid, res); 896 return (NULL); 897 } 898 } 899 900 return (res); 901 } 902 903 static int 904 exca_release_resource(struct exca_softc *sc, device_t child, int type, 905 int rid, struct resource *res) 906 { 907 int error; 908 909 if (rman_get_flags(res) & RF_ACTIVE) { 910 error = bus_deactivate_resource(child, type, rid, res); 911 if (error != 0) 912 return (error); 913 } 914 cbb_remove_res(sc, res); 915 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 916 type, rid, res)); 917 } 918 #endif 919 920 static int 921 exca_modevent(module_t mod, int cmd, void *arg) 922 { 923 return 0; 924 } 925 926 DEV_MODULE(exca, exca_modevent, NULL); 927 MODULE_VERSION(exca, 1);
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