1 /* $OpenBSD: ts102.c,v 1.14 2005/01/27 17:03:23 millert Exp $ */ 2 /* $NetBSD: ts102.c,v 1.22 2023/12/20 05:33:18 thorpej Exp $ */ 3 /* 4 * Copyright (c) 2003, 2004, Miodrag Vallat. 5 * Copyright (c) 2005, Michael Lorenz. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for the PCMCIA controller found in Tadpole SPARCbook 3 series 31 * notebooks. 32 * 33 * Based on the information provided in the SPARCbook 3 Technical Reference 34 * Manual (s3gxtrmb.pdf), chapter 7. A few ramblings against this document 35 * and/or the chip itself are scattered across this file. 36 * 37 * Implementation notes: 38 * 39 * - The TS102 exports its PCMCIA windows as SBus memory ranges: 64MB for 40 * the common memory window, and 16MB for the attribute and I/O windows. 41 * 42 * Mapping the whole windows would consume 192MB of address space, which 43 * is much more that what the iospace can offer. 44 * 45 * A best-effort solution would be to map the windows on demand. However, 46 * due to the wap mapdev() works, the va used for the mappings would be 47 * lost after unmapping (although using an extent to register iospace memory 48 * usage would fix this). So, instead, we will do a fixed mapping of a subset 49 * of each window upon attach - this is similar to what the stp4020 driver 50 * does. 51 * 52 * Endianness farce: 53 * 54 * - The documentation pretends that the endianness settings only affect the 55 * common memory window. Gee, thanks a lot. What about other windows, then? 56 * As a result, this driver runs with endianness conversions turned off. 57 * 58 * - One of the little-endian SBus and big-endian PCMCIA flags has the reverse 59 * meaning, actually. To achieve a ``no endianness conversion'' status, 60 * one has to be set and the other unset. It does not matter which one, 61 * though. 62 */ 63 64 #include <sys/cdefs.h> 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/errno.h> 69 #include <sys/extent.h> 70 #include <sys/proc.h> 71 #include <sys/kernel.h> 72 #include <sys/kthread.h> 73 #include <sys/device.h> 74 75 #include <dev/pcmcia/pcmciareg.h> 76 #include <dev/pcmcia/pcmciavar.h> 77 #include <dev/pcmcia/pcmciachip.h> 78 79 #include <sys/bus.h> 80 #include <machine/intr.h> 81 #include <machine/autoconf.h> 82 83 #include <dev/sbus/sbusvar.h> 84 #include <sparc/dev/ts102reg.h> 85 86 #include "tctrl.h" 87 88 #if NTCTRL > 0 89 #include <machine/tctrl.h> 90 #include <sparc/dev/tctrlvar.h> 91 #endif 92 93 #define TS102_NUM_SLOTS 2 94 95 /* 96 * Memory ranges 97 */ 98 #define TS102_RANGE_COMMON 0 99 #define TS102_RANGE_ATTR 1 100 #define TS102_RANGE_IO 2 101 102 #define TS102_RANGE_CNT 3 103 #define TS102_NUM_RANGES (TS102_RANGE_CNT * TS102_NUM_SLOTS) 104 105 #define TS102_ARBITRARY_MAP_SIZE (1 * 1024 * 1024) 106 107 struct tslot_softc; 108 109 #ifdef TSLOT_DEBUG 110 #define TSPRINTF printf 111 #else 112 #define TSPRINTF while (0) printf 113 #endif 114 115 /* 116 * Per-slot data 117 */ 118 struct tslot_data { 119 struct tslot_softc *td_parent; 120 device_t td_pcmcia; 121 122 volatile uint8_t *td_regs; 123 bus_addr_t td_space[TS102_RANGE_CNT]; 124 bus_space_tag_t td_pcmciat; /* for accessing cards */ 125 126 /* Interrupt handler */ 127 int (*td_intr)(void *); 128 void *td_intrarg; 129 void *td_softint; 130 131 /* Socket status */ 132 int td_slot; 133 int td_status; 134 #define TS_CARD 0x0001 135 }; 136 137 struct tslot_softc { 138 device_t sc_dev; 139 140 bus_space_tag_t sc_bustag; /* socket control io */ 141 bus_space_handle_t sc_regh; /* space */ 142 143 pcmcia_chipset_tag_t sc_pct; 144 145 lwp_t *sc_thread; /* event thread */ 146 uint32_t sc_events; /* sockets with pending events */ 147 148 /* bits 0 and 1 are set according to card presence in slot 0 and 1 */ 149 uint32_t sc_active; 150 151 struct tslot_data sc_slot[TS102_NUM_SLOTS]; 152 }; 153 154 static void tslot_attach(device_t, device_t, void *); 155 static void tslot_event_thread(void *); 156 static int tslot_intr(void *); 157 static void tslot_intr_disestablish(pcmcia_chipset_handle_t, void *); 158 static void *tslot_intr_establish(pcmcia_chipset_handle_t, 159 struct pcmcia_function *, int, int (*)(void *), void *); 160 161 const char *tslot_intr_string(pcmcia_chipset_handle_t, void *); 162 static int tslot_io_alloc(pcmcia_chipset_handle_t, bus_addr_t, bus_size_t, 163 bus_size_t, struct pcmcia_io_handle *); 164 static void tslot_io_free(pcmcia_chipset_handle_t, struct pcmcia_io_handle *); 165 static int tslot_io_map(pcmcia_chipset_handle_t, int, bus_addr_t, bus_size_t, 166 struct pcmcia_io_handle *, int *); 167 static void tslot_io_unmap(pcmcia_chipset_handle_t, int); 168 static int tslot_match(device_t, struct cfdata *, void *); 169 static int tslot_mem_alloc(pcmcia_chipset_handle_t, bus_size_t, 170 struct pcmcia_mem_handle *); 171 static void tslot_mem_free(pcmcia_chipset_handle_t, struct pcmcia_mem_handle *); 172 static int tslot_mem_map(pcmcia_chipset_handle_t, int, bus_addr_t, bus_size_t, 173 struct pcmcia_mem_handle *, bus_size_t *, int *); 174 static void tslot_mem_unmap(pcmcia_chipset_handle_t, int); 175 static int tslot_print(void *, const char *); 176 static void tslot_queue_event(struct tslot_softc *, int); 177 static void tslot_reset(struct tslot_data *, uint32_t); 178 static void tslot_slot_disable(pcmcia_chipset_handle_t); 179 static void tslot_slot_enable(pcmcia_chipset_handle_t); 180 static void tslot_slot_intr(struct tslot_data *, int); 181 static void tslot_slot_settype(pcmcia_chipset_handle_t, int); 182 static void tslot_update_lcd(struct tslot_softc *, int, int); 183 static void tslot_intr_dispatch(void *arg); 184 void tslot_delay(struct tslot_softc *sc, unsigned int ms); 185 186 CFATTACH_DECL_NEW(tslot, sizeof(struct tslot_softc), 187 tslot_match, tslot_attach, NULL, NULL); 188 189 extern struct cfdriver tslot_cd; 190 191 /* 192 * PCMCIA chipset methods 193 */ 194 struct pcmcia_chip_functions tslot_functions = { 195 tslot_mem_alloc, 196 tslot_mem_free, 197 tslot_mem_map, 198 tslot_mem_unmap, 199 200 tslot_io_alloc, 201 tslot_io_free, 202 tslot_io_map, 203 tslot_io_unmap, 204 205 tslot_intr_establish, 206 tslot_intr_disestablish, 207 208 tslot_slot_enable, 209 tslot_slot_disable, 210 tslot_slot_settype 211 }; 212 213 static uint16_t ts102_read_2(bus_space_tag_t, 214 bus_space_handle_t, 215 bus_size_t); 216 static uint32_t ts102_read_4(bus_space_tag_t, 217 bus_space_handle_t, 218 bus_size_t); 219 static uint64_t ts102_read_8(bus_space_tag_t, 220 bus_space_handle_t, 221 bus_size_t); 222 static void ts102_write_2(bus_space_tag_t, 223 bus_space_handle_t, 224 bus_size_t, 225 uint16_t); 226 static void ts102_write_4(bus_space_tag_t, 227 bus_space_handle_t, 228 bus_size_t, 229 uint32_t); 230 static void ts102_write_8(bus_space_tag_t, 231 bus_space_handle_t, 232 bus_size_t, 233 uint64_t); 234 235 static uint16_t 236 ts102_read_2(bus_space_tag_t space, bus_space_handle_t handle, 237 bus_size_t offset) 238 { 239 return (le16toh(*(volatile uint16_t *)(handle + 240 offset))); 241 } 242 243 static uint32_t 244 ts102_read_4(bus_space_tag_t space, bus_space_handle_t handle, 245 bus_size_t offset) 246 { 247 return (le32toh(*(volatile uint32_t *)(handle + 248 offset))); 249 } 250 251 static uint64_t 252 ts102_read_8(bus_space_tag_t space, bus_space_handle_t handle, 253 bus_size_t offset) 254 { 255 return (le64toh(*(volatile uint64_t *)(handle + 256 offset))); 257 } 258 259 static void 260 ts102_write_2(bus_space_tag_t space, bus_space_handle_t handle, 261 bus_size_t offset, uint16_t value) 262 { 263 (*(volatile uint16_t *)(handle + offset)) = 264 htole16(value); 265 } 266 267 static void 268 ts102_write_4(bus_space_tag_t space, bus_space_handle_t handle, 269 bus_size_t offset, uint32_t value) 270 { 271 (*(volatile uint32_t *)(handle + offset)) = 272 htole32(value); 273 } 274 275 static void 276 ts102_write_8(bus_space_tag_t space, bus_space_handle_t handle, 277 bus_size_t offset, uint64_t value) 278 { 279 (*(volatile uint64_t *)(handle + offset)) = 280 htole64(value); 281 } 282 283 284 #define TSLOT_READ(slot, offset) \ 285 *(volatile uint16_t *)((slot)->td_regs + (offset)) 286 #define TSLOT_WRITE(slot, offset, value) \ 287 *(volatile uint16_t *)((slot)->td_regs + (offset)) = (value) 288 289 /* 290 * Attachment and initialization 291 */ 292 293 static int 294 tslot_match(device_t parent, struct cfdata *vcf, void *aux) 295 { 296 struct sbus_attach_args *sa = aux; 297 298 return (strcmp("ts102", sa->sa_name) == 0); 299 } 300 301 static void 302 tslot_attach(device_t parent, device_t self, void *args) 303 { 304 struct sbus_attach_args *sa = args; 305 struct tslot_softc *sc = device_private(self); 306 struct tslot_data *td; 307 volatile uint8_t *regs; 308 int node, slot, rnum, base, size; 309 uint32_t ranges[30]; 310 void *rptr = ranges; 311 bus_space_handle_t hrang = 0; 312 bus_space_tag_t tag; 313 314 sc->sc_dev = self; 315 node = sa->sa_node; 316 sc->sc_bustag=sa->sa_bustag; 317 if (sbus_bus_map(sa->sa_bustag, 318 sa->sa_slot, 319 sa->sa_offset, 320 sa->sa_size, 321 0, &sc->sc_regh) != 0) { 322 printf("%s: cannot map registers\n", device_xname(self)); 323 return; 324 } 325 regs = (uint8_t *)bus_space_vaddr(sa->sa_bustag, sc->sc_regh); 326 327 tag = bus_space_tag_alloc(sa->sa_bustag, sc); 328 if (tag == NULL) { 329 printf("%s: attach: out of memory\n", device_xname(self)); 330 return; 331 } 332 tag->sparc_read_2 = ts102_read_2; 333 tag->sparc_read_4 = ts102_read_4; 334 tag->sparc_read_8 = ts102_read_8; 335 tag->sparc_write_2 = ts102_write_2; 336 tag->sparc_write_4 = ts102_write_4; 337 tag->sparc_write_8 = ts102_write_8; 338 339 bus_intr_establish(sa->sa_bustag, sa->sa_intr[0].oi_pri, 340 IPL_NONE, tslot_intr, sc); 341 342 printf(": %d slots\n", TS102_NUM_SLOTS); 343 344 size = sizeof(ranges); 345 if (prom_getprop(node, "ranges", 4, &size, &rptr) != 0) { 346 printf("couldn't read ranges\n"); 347 return; 348 } 349 350 /* 351 * Setup asynchronous event handler 352 */ 353 sc->sc_events = 0; 354 355 TSPRINTF("starting event thread...\n"); 356 if (kthread_create(PRI_NONE, 0, NULL, tslot_event_thread, sc, 357 &sc->sc_thread, "%s", device_xname(self)) != 0) { 358 panic("%s: unable to create event kthread", 359 device_xname(self)); 360 } 361 362 sc->sc_pct = (pcmcia_chipset_tag_t)&tslot_functions; 363 sc->sc_active = 0; 364 365 /* 366 * Setup slots 367 */ 368 TSPRINTF("mapping resources...\n"); 369 for (slot = 0; slot < TS102_NUM_SLOTS; slot++) { 370 td = &sc->sc_slot[slot]; 371 TSPRINTF("slot %d, ",slot); 372 for (rnum = 0; rnum < TS102_RANGE_CNT; rnum++) { 373 base = (slot * TS102_RANGE_CNT + rnum) * 5; 374 TSPRINTF("%d: %08x %08x ",rnum,ranges[base + 3], 375 ranges[base + 4]); 376 if(sbus_bus_map(sc->sc_bustag, 377 sa->sa_slot, 378 ranges[base+3], 379 TS102_ARBITRARY_MAP_SIZE, 380 0, &hrang) != 0) { 381 printf("%s: cannot map registers\n", 382 device_xname(self)); 383 return; 384 } 385 TSPRINTF("%08x: %08x ",(uint32_t)ranges[base + 3], 386 (uint32_t)hrang); 387 td->td_space[rnum] = hrang; 388 } 389 td->td_parent = sc; 390 td->td_pcmciat = tag; 391 td->td_softint = NULL; 392 td->td_regs = regs + slot * (TS102_REG_CARD_B_INT - 393 TS102_REG_CARD_A_INT); 394 td->td_slot = slot; 395 396 TSPRINTF("resetting slot %d %d\n", slot, (int)td->td_regs); 397 tslot_reset(td, TS102_ARBITRARY_MAP_SIZE); 398 } 399 } 400 401 static void 402 tslot_reset(struct tslot_data *td, uint32_t iosize) 403 { 404 struct pcmciabus_attach_args paa; 405 int ctl, status; 406 407 paa.paa_busname = "pcmcia"; 408 paa.pct = (pcmcia_chipset_tag_t)td->td_parent->sc_pct; 409 paa.pch = (pcmcia_chipset_handle_t)td; 410 411 td->td_pcmcia = config_found(td->td_parent->sc_dev, &paa, tslot_print, 412 CFARGS_NONE); 413 414 if (td->td_pcmcia == NULL) { 415 /* 416 * If no pcmcia attachment, power down the slot. 417 */ 418 tslot_slot_disable((pcmcia_chipset_handle_t)td); 419 return; 420 } 421 422 /* 423 * Initialize the slot 424 */ 425 426 ctl = TSLOT_READ(td, TS102_REG_CARD_A_CTL); 427 428 /* force low addresses */ 429 ctl &= ~(TS102_CARD_CTL_AA_MASK | TS102_CARD_CTL_IA_MASK); 430 431 /* Put SBus and PCMCIA in their respective endian mode */ 432 ctl |= TS102_CARD_CTL_SBLE; /* this is not what it looks like! */ 433 ctl &= ~TS102_CARD_CTL_PCMBE; /* default */ 434 435 /* disable read ahead and address increment */ 436 ctl &= ~TS102_CARD_CTL_RAHD; 437 ctl |= TS102_CARD_CTL_INCDIS; 438 439 /* power on */ 440 ctl &= ~TS102_CARD_CTL_PWRD; 441 TSLOT_WRITE(td, TS102_REG_CARD_A_CTL, ctl); 442 TSPRINTF("ctl: %x\n", ctl); 443 444 /* 445 * Enable interrupt upon insertion/removal 446 */ 447 448 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, 449 TS102_CARD_INT_MASK_CARDDETECT_STATUS); 450 451 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 452 if (status & TS102_CARD_STS_PRES) { 453 td->td_status = TS_CARD; 454 pcmcia_card_attach(td->td_pcmcia); 455 } else 456 td->td_status = 0; 457 } 458 459 /* XXX there ought to be a common function for this... */ 460 static int 461 tslot_print(void *aux, const char *description) 462 { 463 struct pcmciabus_attach_args *paa = aux; 464 struct tslot_data *td = (struct tslot_data *)paa->pch; 465 466 printf(" socket %d", td->td_slot); 467 return (UNCONF); 468 } 469 470 /* 471 * PCMCIA Helpers 472 */ 473 474 static int 475 tslot_io_alloc(pcmcia_chipset_handle_t pch, bus_addr_t start, bus_size_t size, 476 bus_size_t align, struct pcmcia_io_handle *pih) 477 { 478 struct tslot_data *td = (struct tslot_data *)pch; 479 480 #ifdef TSLOT_DEBUG 481 printf("[io alloc %x]", (uint32_t)size); 482 #endif 483 484 pih->iot = td->td_pcmciat; 485 pih->ioh = td->td_space[TS102_RANGE_IO]; 486 pih->addr = start; 487 pih->size = size; 488 pih->flags = 0; 489 490 return (0); 491 } 492 493 static void 494 tslot_io_free(pcmcia_chipset_handle_t pch, struct pcmcia_io_handle *pih) 495 { 496 #ifdef TSLOT_DEBUG 497 printf("[io free]"); 498 #endif 499 } 500 501 static int 502 tslot_io_map(pcmcia_chipset_handle_t pch, int width, bus_addr_t offset, 503 bus_size_t size, struct pcmcia_io_handle *pih, int *windowp) 504 { 505 struct tslot_data *td = (struct tslot_data *)pch; 506 507 #ifdef TSLOT_DEBUG 508 printf("[io map %x/%x", (uint32_t)offset, (uint32_t)size); 509 #endif 510 511 pih->iot = td->td_pcmciat; 512 if (bus_space_subregion(pih->iot, td->td_space[TS102_RANGE_IO], 513 offset, size, &pih->ioh) != 0) 514 printf("io_map failed, offset %x\n", (uint32_t)offset); 515 *windowp = 0; /* TS102_RANGE_IO */ 516 517 #ifdef TSLOT_DEBUG 518 printf("->%x/%x]", (uint32_t)pih->ioh, (uint32_t)size); 519 { 520 int addr, line; 521 for( addr = offset; addr < (offset + size); addr += 16) { 522 printf("%04x:", addr); 523 for(line = addr; line < (addr + 16); line += 2) { 524 printf(" %04x", bus_space_read_2(pih->iot, 525 pih->ioh, line)); 526 } 527 printf("\n"); 528 } 529 } 530 #endif 531 532 return (0); 533 } 534 535 static void 536 tslot_io_unmap(pcmcia_chipset_handle_t pch, int win) 537 { 538 #ifdef TSLOT_DEBUG 539 struct tslot_data *td = (struct tslot_data *)pch; 540 541 printf("[io unmap]"); 542 { 543 int addr, line, offset = 0, size = 0x80; 544 for (addr = offset; addr < (offset + size); addr += 16) { 545 printf("%04x:", addr); 546 for (line = addr; line < (addr + 16); line += 2){ 547 printf(" %04x", bus_space_read_2(td->td_pcmciat, 548 td->td_space[2], line)); 549 } 550 printf("\n"); 551 } 552 } 553 #endif 554 } 555 556 static int 557 tslot_mem_alloc(pcmcia_chipset_handle_t pch, bus_size_t size, 558 struct pcmcia_mem_handle *pmh) 559 { 560 struct tslot_data *td = (struct tslot_data *)pch; 561 562 #ifdef TSLOT_DEBUG 563 printf("[mem alloc %x]", (uint32_t)size); 564 #endif 565 pmh->memt = td->td_pcmciat; 566 pmh->size = size; 567 pmh->addr = 0; 568 pmh->mhandle = 0; 569 pmh->realsize = size; /* nothing so far! */ 570 571 return (0); 572 } 573 574 static void 575 tslot_mem_free(pcmcia_chipset_handle_t pch, struct pcmcia_mem_handle *pmh) 576 { 577 #ifdef TSLOT_DEBUG 578 printf("[mem free]"); 579 #endif 580 } 581 582 static int 583 tslot_mem_map(pcmcia_chipset_handle_t pch, int kind, bus_addr_t addr, 584 bus_size_t size, struct pcmcia_mem_handle *pmh, bus_size_t *offsetp, 585 int *windowp) 586 { 587 struct tslot_data *td = (struct tslot_data *)pch; 588 int slot; 589 590 slot = kind & PCMCIA_MEM_ATTR ? TS102_RANGE_ATTR : TS102_RANGE_COMMON; 591 #ifdef TSLOT_DEBUG 592 printf("[mem map %d %x/%x", slot, (uint32_t)addr, (uint32_t)size); 593 #endif 594 595 pmh->memt = td->td_parent->sc_bustag; 596 if (bus_space_subregion(pmh->memt, td->td_space[slot], 597 addr, size, &pmh->memh) != 0) 598 printf("mem_map failed, offset %x\n", (uint32_t)addr); 599 pmh->realsize = TS102_ARBITRARY_MAP_SIZE - addr; 600 pmh->size = size; 601 *offsetp = 0; 602 *windowp = 0; 603 604 #ifdef TSLOT_DEBUG 605 printf("->%x/%x]", (uint32_t)pmh->memh, (uint32_t)size); 606 #endif 607 608 return (0); 609 } 610 611 static void 612 tslot_mem_unmap(pcmcia_chipset_handle_t pch, int win) 613 { 614 #ifdef TSLOT_DEBUG 615 printf("[mem unmap %d]", win); 616 #endif 617 } 618 619 static void 620 tslot_slot_disable(pcmcia_chipset_handle_t pch) 621 { 622 struct tslot_data *td = (struct tslot_data *)pch; 623 int status; 624 625 #ifdef TSLOT_DEBUG 626 printf("%s: disable slot %d\n", 627 device_xname(td->td_parent->sc_dev), td->td_slot); 628 #endif 629 630 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 631 632 status &= ~TS102_CARD_STS_ACEN; 633 634 /* 635 * Disable interrupts, except for insertion. 636 */ 637 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, 638 TS102_CARD_INT_MASK_CARDDETECT_STATUS); 639 640 /* 641 * Power down the socket and disable access 642 */ 643 status &= ~TS102_CARD_STS_ACEN; 644 status &= ~(TS102_CARD_STS_VPP1_MASK | TS102_CARD_STS_VPP2_MASK); 645 status |= TS102_CARD_STS_VCCEN; 646 TSLOT_WRITE(td, TS102_REG_CARD_A_STS, status); 647 648 /* 649 * wait 300ms until power fails (Tpf). 650 */ 651 tslot_delay(td->td_parent, 300); 652 } 653 654 static void 655 tslot_slot_enable(pcmcia_chipset_handle_t pch) 656 { 657 struct tslot_data *td = (struct tslot_data *)pch; 658 int status, intr, i; 659 660 #ifdef TSLOT_DEBUG 661 printf("%s: enable slot %d\n", 662 device_xname(td->td_parent->sc_dev), td->td_slot); 663 #endif 664 665 /* Power down the socket to reset it */ 666 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 667 TSPRINTF("status: %x\n", status); 668 669 status &= ~TS102_CARD_STS_ACEN; 670 status &= ~(TS102_CARD_STS_VPP1_MASK | TS102_CARD_STS_VPP2_MASK); 671 status |= TS102_CARD_STS_VCCEN; 672 TSLOT_WRITE(td, TS102_REG_CARD_A_STS, status); 673 674 /* 675 * wait 300ms until power fails (Tpf). Then, wait 100ms since we 676 * are changing Vcc (Toff). 677 */ 678 tslot_delay(td->td_parent, 300 + 100); 679 680 /* 681 * Power on the card if not already done, and enable card access 682 */ 683 status |= TS102_CARD_STS_ACEN; 684 status |= TS102_CARD_STS_VPP1_VCC; 685 status &= ~TS102_CARD_STS_VCCEN; 686 TSLOT_WRITE(td, TS102_REG_CARD_A_STS, status); 687 688 /* 689 * wait 100ms until power raise (Tpr) and 20ms to become 690 * stable (Tsu(Vcc)). 691 */ 692 tslot_delay(td->td_parent, 100 + 20); 693 694 /* 695 * hold RESET at least 20us. 696 */ 697 intr = TSLOT_READ(td, TS102_REG_CARD_A_INT); 698 delay(20); 699 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, 700 intr & ~TS102_CARD_INT_SOFT_RESET); 701 702 /* wait 20ms as per pc card standard (r2.01) section 4.3.6 */ 703 tslot_delay(td->td_parent, 20); 704 705 /* We need level-triggered interrupts for PC Card hardware */ 706 TSLOT_WRITE(td, TS102_REG_CARD_A_STS, 707 TSLOT_READ(td, TS102_REG_CARD_A_STS) | TS102_CARD_STS_LVL); 708 709 /* 710 * Wait until the card is unbusy. If it is still busy after 3 seconds, 711 * give up. We could enable card interrupts and wait for the interrupt 712 * to happen when BUSY is released, but the interrupt could also be 713 * triggered by the card itself if it's an I/O card, so better poll 714 * here. 715 */ 716 for (i = 30000; i != 0; i--) { 717 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 718 /* If the card has been removed, abort */ 719 if ((status & TS102_CARD_STS_PRES) == 0) { 720 tslot_slot_disable(pch); 721 return; 722 } 723 if (status & TS102_CARD_STS_RDY) 724 break; 725 else 726 delay(100); 727 } 728 729 if (i == 0) { 730 printf("%s: slot %d still busy after 3 seconds, status 0x%x\n", 731 device_xname(td->td_parent->sc_dev), td->td_slot, 732 TSLOT_READ(td, TS102_REG_CARD_A_STS)); 733 return; 734 } 735 } 736 static void 737 tslot_event_thread(void *v) 738 { 739 struct tslot_softc *sc = v; 740 struct tslot_data *td; 741 int s, status; 742 unsigned int socket; 743 744 #if NTCTRL > 0 745 int i; 746 747 /* 748 * First-time setup of our LCD symbol. When a card is present at boot 749 * time we won't detect a change here and therefore the LCD symbol won't 750 * light up. 751 */ 752 for (i = 0; i < TS102_NUM_SLOTS; i++) { 753 td = &sc->sc_slot[i]; 754 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 755 tslot_update_lcd(sc, i, status & TS102_CARD_STS_PRES); 756 } 757 #endif 758 759 for (;;) { 760 s = splhigh(); 761 762 if ((socket = ffs(sc->sc_events)) == 0) { 763 splx(s); 764 tsleep(&sc->sc_events, PWAIT, "tslot_event", hz * 30); 765 continue; 766 } 767 socket--; 768 sc->sc_events &= ~(1 << socket); 769 splx(s); 770 771 if (socket >= TS102_NUM_SLOTS) { 772 #ifdef DEBUG 773 printf("%s: invalid slot number %d\n", 774 device_xname(sc->sc_dev), socket); 775 #endif 776 continue; 777 } 778 779 td = &sc->sc_slot[socket]; 780 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 781 782 if (status & TS102_CARD_STS_PRES) { 783 /* Card insertion */ 784 if ((td->td_status & TS_CARD) == 0) { 785 td->td_status |= TS_CARD; 786 tslot_update_lcd(sc, socket, 1); 787 pcmcia_card_attach(td->td_pcmcia); 788 } 789 } else { 790 /* Card removal */ 791 if ((td->td_status & TS_CARD) != 0) { 792 tslot_update_lcd(sc, socket, 0); 793 td->td_status &= ~TS_CARD; 794 pcmcia_card_detach(td->td_pcmcia, 795 DETACH_FORCE); 796 } 797 } 798 } 799 } 800 801 /* 802 * Interrupt handling 803 */ 804 805 static int 806 tslot_intr(void *v) 807 { 808 struct tslot_softc *sc = v; 809 struct tslot_data *td; 810 int intregs[TS102_NUM_SLOTS], *intreg; 811 int i, s, rc = 0; 812 813 s = splhigh(); 814 815 /* 816 * Scan slots, and acknowledge the interrupt if necessary first 817 */ 818 for (i = 0; i < TS102_NUM_SLOTS; i++) { 819 td = &sc->sc_slot[i]; 820 intreg = &intregs[i]; 821 *intreg = TSLOT_READ(td, TS102_REG_CARD_A_INT); 822 823 /* 824 * Acknowledge all interrupt situations at once, even if they 825 * did not occur. 826 */ 827 if ((*intreg & (TS102_CARD_INT_STATUS_IRQ | 828 TS102_CARD_INT_STATUS_WP_STATUS_CHANGED | 829 TS102_CARD_INT_STATUS_BATTERY_STATUS_CHANGED | 830 TS102_CARD_INT_STATUS_CARDDETECT_STATUS_CHANGED)) != 0) { 831 rc = 1; 832 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, *intreg | 833 TS102_CARD_INT_RQST_IRQ | 834 TS102_CARD_INT_RQST_WP_STATUS_CHANGED | 835 TS102_CARD_INT_RQST_BATTERY_STATUS_CHANGED | 836 TS102_CARD_INT_RQST_CARDDETECT_STATUS_CHANGED); 837 } 838 } 839 840 #ifdef TSLOT_DEBUG 841 printf("tslot_intr: %x %x\n", intregs[0], intregs[1]); 842 #endif 843 844 /* 845 * Invoke the interrupt handler for each slot 846 */ 847 for (i = 0; i < TS102_NUM_SLOTS; i++) { 848 td = &sc->sc_slot[i]; 849 intreg = &intregs[i]; 850 851 if ((*intreg & (TS102_CARD_INT_STATUS_IRQ | 852 TS102_CARD_INT_STATUS_WP_STATUS_CHANGED | 853 TS102_CARD_INT_STATUS_BATTERY_STATUS_CHANGED | 854 TS102_CARD_INT_STATUS_CARDDETECT_STATUS_CHANGED)) != 0) 855 tslot_slot_intr(td, *intreg); 856 } 857 splx(s); 858 859 return (rc); 860 } 861 862 static void 863 tslot_queue_event(struct tslot_softc *sc, int slot) 864 { 865 int s; 866 867 s = splhigh(); 868 sc->sc_events |= (1 << slot); 869 splx(s); 870 wakeup(&sc->sc_events); 871 } 872 873 static void 874 tslot_slot_intr(struct tslot_data *td, int intreg) 875 { 876 struct tslot_softc *sc = td->td_parent; 877 int status, sockstat; 878 uint32_t ireg; 879 880 status = TSLOT_READ(td, TS102_REG_CARD_A_STS); 881 #ifdef TSLOT_DEBUG 882 printf("%s: interrupt on socket %d ir %x sts %x\n", 883 device_xname(sc->sc_dev), td->td_slot, intreg, status); 884 #else 885 __USE(status); 886 #endif 887 888 sockstat = td->td_status; 889 890 /* 891 * The TS102 queues interrupt request, and may trigger an interrupt 892 * for a condition the driver does not want to receive anymore (for 893 * example, after a card gets removed). 894 * Thus, only proceed if the driver is currently allowing a particular 895 * condition. 896 */ 897 898 if ((intreg & TS102_CARD_INT_STATUS_CARDDETECT_STATUS_CHANGED) != 0 && 899 (intreg & TS102_CARD_INT_MASK_CARDDETECT_STATUS) != 0) { 900 tslot_queue_event(sc, td->td_slot); 901 #ifdef TSLOT_DEBUG 902 printf("%s: slot %d status changed from %d to %d\n", 903 device_xname(sc->sc_dev), td->td_slot, sockstat, 904 td->td_status); 905 #endif 906 /* 907 * Ignore extra interrupt bits, they are part of the change. 908 */ 909 return; 910 } 911 912 if ((intreg & TS102_CARD_INT_STATUS_IRQ) != 0 && 913 (intreg & TS102_CARD_INT_MASK_IRQ) != 0) { 914 /* ignore interrupts if we have a pending state change */ 915 if (sc->sc_events & (1 << td->td_slot)) 916 { 917 TSPRINTF("ev: %d\n", sc->sc_events); 918 return; 919 } 920 if ((sockstat & TS_CARD) == 0) { 921 printf("%s: spurious interrupt on slot %d isr %x\n", 922 device_xname(sc->sc_dev), td->td_slot, intreg); 923 return; 924 } 925 926 if (td->td_intr != NULL) { 927 928 if (td->td_softint != NULL) 929 sparc_softintr_schedule(td->td_softint); 930 /* 931 * Disable this sbus interrupt, until the soft-int 932 * handler had a chance to run 933 */ 934 ireg = TSLOT_READ(td, TS102_REG_CARD_A_INT); 935 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, ireg & 936 ~TS102_CARD_INT_MASK_IRQ); 937 } 938 } 939 } 940 941 static void 942 tslot_intr_disestablish(pcmcia_chipset_handle_t pch, void *ih) 943 { 944 struct tslot_data *td = (struct tslot_data *)pch; 945 946 td->td_intr = NULL; 947 td->td_intrarg = NULL; 948 if (td->td_softint) { 949 sparc_softintr_disestablish(td->td_softint); 950 td->td_softint = NULL; 951 } 952 } 953 954 const char * 955 tslot_intr_string(pcmcia_chipset_handle_t pch, void *ih) 956 { 957 if (ih == NULL) 958 return ("couldn't establish interrupt"); 959 else 960 return (""); /* nothing for now */ 961 } 962 963 static void * 964 tslot_intr_establish(pcmcia_chipset_handle_t pch, struct pcmcia_function *pf, 965 int ipl, int (*handler)(void *), void *arg) 966 { 967 struct tslot_data *td = (struct tslot_data *)pch; 968 969 td->td_intr = handler; 970 td->td_intrarg = arg; 971 td->td_softint = sparc_softintr_establish(ipl, tslot_intr_dispatch, td); 972 973 return (td); 974 } 975 976 /* 977 * Softinterrupt called to invoke the real driver interrupt handler. 978 */ 979 static void 980 tslot_intr_dispatch(void *arg) 981 { 982 struct tslot_data *td = arg; 983 int s; 984 uint32_t ireg; 985 986 /* invoke driver handler */ 987 td->td_intr(td->td_intrarg); 988 989 /* enable SBUS interrupts for pcmcia interrupts again */ 990 s = splhigh(); 991 ireg = TSLOT_READ(td, TS102_REG_CARD_A_INT); 992 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, ireg | TS102_CARD_INT_MASK_IRQ); 993 splx(s); 994 } 995 996 static void 997 tslot_slot_settype(pcmcia_chipset_handle_t pch, int type) 998 { 999 struct tslot_data *td = (struct tslot_data *)pch; 1000 uint32_t reg; 1001 1002 /* 1003 * Enable the card interrupts if this is an I/O card. 1004 * Note that the TS102_CARD_STS_IO bit in the status register will 1005 * never get set, despite what the documentation says! 1006 */ 1007 TSPRINTF("tslot_slot_settype(%d)\n",type); 1008 if (type == PCMCIA_IFTYPE_IO) { 1009 TSLOT_WRITE(td, TS102_REG_CARD_A_STS, 1010 TSLOT_READ(td, TS102_REG_CARD_A_STS) | TS102_CARD_STS_IO); 1011 TSLOT_WRITE(td, TS102_REG_CARD_A_INT, 1012 TS102_CARD_INT_MASK_CARDDETECT_STATUS | 1013 TS102_CARD_INT_MASK_IRQ); 1014 reg=TSLOT_READ(td, TS102_REG_CARD_A_STS); 1015 TSPRINTF("status: %x\n", reg); 1016 } 1017 } 1018 1019 static void 1020 tslot_update_lcd(struct tslot_softc *sc, int socket, int status) 1021 { 1022 #if NTCTRL > 0 1023 int was = (sc->sc_active != 0), is; 1024 int mask = 1 << socket; 1025 1026 if (status > 0) { 1027 sc->sc_active |= mask; 1028 } else { 1029 sc->sc_active &= (mask ^ 3); 1030 } 1031 is = (sc->sc_active != 0); 1032 if (was != is) { 1033 tadpole_set_lcd(is, 0x40); 1034 } 1035 #endif 1036 } 1037 1038 /* 1039 * Delay and possibly yield CPU. 1040 * XXX - assumes a context 1041 */ 1042 void 1043 tslot_delay(struct tslot_softc *sc, unsigned int ms) 1044 { 1045 unsigned int ticks = mstohz(ms); 1046 1047 if (cold || ticks == 0) { 1048 delay(ms); 1049 return; 1050 } 1051 1052 #ifdef DIAGNOSTIC 1053 if (ticks > 60*hz) 1054 panic("tslot: preposterous delay: %u", ticks); 1055 #endif 1056 tsleep(sc, 0, "tslotdel", ticks); 1057 } 1058
Indexes created Mon Sep 22 05:09:51 GMT 2025