gayle_pcmcia.c revision 1.6
1 /* $NetBSD: gayle_pcmcia.c,v 1.6 2000/09/27 08:24:02 aymeric Exp $ */ 2 3 /* public domain */ 4 5 /* PCMCIA front-end driver for A1200's and A600's. */ 6 7 #include <sys/param.h> 8 #include <sys/cdefs.h> 9 #include <sys/device.h> 10 #include <sys/kernel.h> 11 #include <sys/kthread.h> 12 #include <sys/systm.h> 13 14 #include <uvm/uvm.h> 15 16 #include <dev/pcmcia/pcmciareg.h> 17 #include <dev/pcmcia/pcmciavar.h> 18 19 #include <machine/cpu.h> 20 #include <amiga/amiga/custom.h> 21 #include <amiga/amiga/device.h> 22 #include <amiga/amiga/gayle.h> 23 #include <amiga/amiga/isr.h> 24 25 26 /* 27 * There is one of these for each slot. This is useless since we have only one, 28 * but it makes it clearer if someone wants to understand better the NetBSD 29 * device drivers scheme. 30 */ 31 struct pccard_slot { 32 struct pccard_softc *sc; /* refer to `parent' */ 33 int (*intr_func)(void *); 34 void * intr_arg; 35 struct device *card; 36 int flags; 37 #define SLOT_OCCUPIED 0x01 38 #define SLOT_NEW_CARD_EVENT 0x02 39 }; 40 41 struct pccard_softc { 42 struct device sc_dev; 43 struct bus_space_tag io_space; 44 struct bus_space_tag attr_space; 45 struct bus_space_tag mem_space; 46 struct pccard_slot devs[1]; 47 struct isr intr6; 48 struct isr intr2; 49 }; 50 51 static int pccard_probe __P((struct device *, struct cfdata *, void *)); 52 static void pccard_attach __P((struct device *, struct device *, void *)); 53 static void pccard_attach_slot __P((struct pccard_slot *)); 54 static int pccard_intr6 __P((void *)); 55 static int pccard_intr2 __P((void *)); 56 static void pccard_create_kthread __P((void *)); 57 static void pccard_kthread __P((void *)); 58 59 static int pcf_mem_alloc __P((pcmcia_chipset_handle_t, bus_size_t, 60 struct pcmcia_mem_handle *)); 61 static void pcf_mem_free __P((pcmcia_chipset_handle_t, 62 struct pcmcia_mem_handle *)); 63 static int pcf_mem_map __P((pcmcia_chipset_handle_t, int, bus_addr_t, 64 bus_size_t, struct pcmcia_mem_handle *, bus_addr_t *, int *)); 65 static void pcf_mem_unmap __P((pcmcia_chipset_handle_t, int)); 66 static int pcf_io_alloc __P((pcmcia_chipset_handle_t, bus_addr_t, bus_size_t, 67 bus_size_t, struct pcmcia_io_handle *)); 68 static void pcf_io_free __P((pcmcia_chipset_handle_t, 69 struct pcmcia_io_handle *)); 70 static int pcf_io_map __P((pcmcia_chipset_handle_t, int, bus_addr_t, 71 bus_size_t, struct pcmcia_io_handle *, int *)); 72 static void pcf_io_unmap __P((pcmcia_chipset_handle_t, int)); 73 static void *pcf_intr_establish __P((pcmcia_chipset_handle_t, 74 struct pcmcia_function *, int, int (*)(void *), void *)); 75 static void pcf_intr_disestablish __P((pcmcia_chipset_handle_t, void *)); 76 static void pcf_socket_enable __P((pcmcia_chipset_handle_t)); 77 static void pcf_socket_disable __P((pcmcia_chipset_handle_t)); 78 79 static bsr(pcmio_bsr1, u_int8_t); 80 static bsw(pcmio_bsw1, u_int8_t); 81 static bsrm(pcmio_bsrm1, u_int8_t); 82 static bswm(pcmio_bswm1, u_int8_t); 83 static bsrm(pcmio_bsrr1, u_int8_t); 84 static bswm(pcmio_bswr1, u_int8_t); 85 static bssr(pcmio_bssr1, u_int8_t); 86 static bscr(pcmio_bscr1, u_int8_t); 87 88 static u_int8_t *reset_card_reg; 89 90 struct cfattach pccard_ca = { 91 sizeof(struct pccard_softc), pccard_probe, pccard_attach 92 }; 93 94 struct pcmcia_chip_functions chip_functions = { 95 pcf_mem_alloc, pcf_mem_free, 96 pcf_mem_map, pcf_mem_unmap, 97 pcf_io_alloc, pcf_io_free, 98 pcf_io_map, pcf_io_unmap, 99 pcf_intr_establish, pcf_intr_disestablish, 100 pcf_socket_enable, pcf_socket_disable 101 }; 102 103 struct amiga_bus_space_methods pcmio_bs_methods; 104 105 static int 106 pccard_probe(dev, cfd, aux) 107 struct device *dev; 108 struct cfdata *cfd; 109 void *aux; 110 { 111 return (/*is_a600() || */is_a1200()) && matchname(aux, "pccard"); 112 } 113 114 static void 115 pccard_attach(parent, myself, aux) 116 struct device *parent, *myself; 117 void *aux; 118 { 119 struct pccard_softc *self = (struct pccard_softc *) myself; 120 struct pcmciabus_attach_args paa; 121 vaddr_t pcmcia_base = GAYLE_PCMCIA_START; 122 vaddr_t i; 123 int ret; 124 125 printf("\n"); 126 127 gayle_init(); 128 129 ret = uvm_map(kernel_map, &pcmcia_base, 130 GAYLE_PCMCIA_END - GAYLE_PCMCIA_START, NULL, 131 UVM_UNKNOWN_OFFSET, 0, 132 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, 133 UVM_INH_NONE, UVM_ADV_RANDOM, 0)); 134 if (ret != KERN_SUCCESS) { 135 printf("attach failed (no virtual memory)\n"); 136 return; 137 } 138 139 for (i = GAYLE_PCMCIA_START; i < GAYLE_PCMCIA_END; i += PAGE_SIZE) 140 pmap_enter(kernel_map->pmap, 141 i - GAYLE_PCMCIA_START + pcmcia_base, i, 142 VM_PROT_READ | VM_PROT_WRITE, TRUE); 143 144 /* override the one-byte access methods for I/O space */ 145 pcmio_bs_methods = amiga_bus_stride_1; 146 pcmio_bs_methods.bsr1 = pcmio_bsr1; 147 pcmio_bs_methods.bsw1 = pcmio_bsw1; 148 pcmio_bs_methods.bsrm1 = pcmio_bsrm1; 149 pcmio_bs_methods.bswm1 = pcmio_bswm1; 150 pcmio_bs_methods.bsrr1 = pcmio_bsrr1; 151 pcmio_bs_methods.bswr1 = pcmio_bswr1; 152 pcmio_bs_methods.bssr1 = pcmio_bssr1; 153 pcmio_bs_methods.bscr1 = pcmio_bscr1; 154 155 reset_card_reg = (u_int8_t *) pcmcia_base - GAYLE_PCMCIA_START + 156 GAYLE_PCMCIA_RESET; 157 158 self->io_space.base = (u_int) pcmcia_base - GAYLE_PCMCIA_START + 159 GAYLE_PCMCIA_IO_START; 160 self->io_space.absm = &pcmio_bs_methods; 161 162 self->attr_space.base = (u_int) pcmcia_base - GAYLE_PCMCIA_START + 163 GAYLE_PCMCIA_ATTR_START; 164 self->attr_space.absm = &amiga_bus_stride_1; 165 166 /* XXX we should check if the 4M of common memory are actually 167 * RAM or PCMCIA usable. 168 * For now, we just do as if the 4M were RAM and make common memory 169 * point to attribute memory, which is OK for some I/O cards. 170 */ 171 self->mem_space.base = (u_int) pcmcia_base; 172 self->mem_space.absm = &amiga_bus_stride_1; 173 174 self->devs[0].sc = self; 175 self->devs[0].intr_func = NULL; 176 self->devs[0].intr_arg = NULL; 177 self->devs[0].flags = 0; 178 179 gayle.pcc_status = 0; 180 gayle.intreq = 0; 181 gayle.pcc_config = 0; 182 gayle.intena &= GAYLE_INT_IDE; 183 184 paa.paa_busname = "pcmcia"; 185 paa.pct = &chip_functions; 186 paa.pch = &self->devs[0]; 187 paa.iobase = 0; 188 paa.iosize = 0; 189 self->devs[0].card = 190 config_found_sm(myself, &paa, simple_devprint, NULL); 191 if (self->devs[0].card == NULL) { 192 printf("attach failed, config_found_sm() returned NULL\n"); 193 return; 194 } 195 196 self->intr6.isr_intr = pccard_intr6; 197 self->intr6.isr_arg = self; 198 self->intr6.isr_ipl = 6; 199 add_isr(&self->intr6); 200 201 self->intr2.isr_intr = pccard_intr2; 202 self->intr2.isr_arg = self; 203 self->intr2.isr_ipl = 2; 204 add_isr(&self->intr2); 205 206 kthread_create(pccard_create_kthread, self); 207 208 gayle.intena |= GAYLE_INT_DETECT | GAYLE_INT_IREQ; 209 210 /* reset the card if it's already there */ 211 if (gayle.pcc_status & GAYLE_CCMEM_DETECT) { 212 volatile u_int8_t x; 213 *reset_card_reg = 0x0; 214 delay(1000); 215 x = *reset_card_reg; 216 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 217 } 218 219 pccard_attach_slot(&self->devs[0]); 220 } 221 222 /* This is called as soon as it is possible to create a kernel thread */ 223 static void 224 pccard_create_kthread(arg) 225 void *arg; 226 { 227 struct pccard_softc *self = arg; 228 229 if (kthread_create1(pccard_kthread, self, NULL, "pccard thread")) { 230 printf("%s: can't create kernel thread\n", 231 self->sc_dev.dv_xname); 232 panic("pccard kthread_create() failed"); 233 } 234 } 235 236 static int 237 pccard_intr6(arg) 238 void *arg; 239 { 240 struct pccard_softc *self = arg; 241 242 if (gayle.intreq & GAYLE_INT_DETECT) { 243 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_STSCHG | 244 GAYLE_INT_SPKR | GAYLE_INT_WP | GAYLE_INT_IREQ; 245 self->devs[0].flags |= SLOT_NEW_CARD_EVENT; 246 return 1; 247 } 248 return 0; 249 } 250 251 static int 252 pccard_intr2(arg) 253 void *arg; 254 { 255 struct pccard_softc *self = arg; 256 struct pccard_slot *slot = &self->devs[0]; 257 258 if (slot->flags & SLOT_NEW_CARD_EVENT) { 259 slot->flags &= ~SLOT_NEW_CARD_EVENT; 260 261 /* reset the registers */ 262 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_DETECT; 263 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 264 gayle.pcc_config = 0; 265 pccard_attach_slot(&self->devs[0]); 266 } else { 267 int intreq = gayle.intreq & 268 (GAYLE_INT_STSCHG | GAYLE_INT_WP | GAYLE_INT_IREQ); 269 if (intreq) { 270 gayle.intreq = (intreq ^ 0x2c) | 0xc0; 271 272 return slot->flags & SLOT_OCCUPIED && 273 slot->intr_func != NULL && 274 slot->intr_func(slot->intr_arg); 275 } 276 } 277 return 0; 278 } 279 280 static void 281 pccard_kthread(arg) 282 void *arg; 283 { 284 struct pccard_softc *self = arg; 285 struct pccard_slot *slot = &self->devs[0]; 286 287 for (;;) { 288 int s = spl2(); 289 290 if (slot->flags & SLOT_NEW_CARD_EVENT) { 291 slot->flags &= ~SLOT_NEW_CARD_EVENT; 292 gayle.intreq = 0xc0; 293 294 /* reset the registers */ 295 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_DETECT; 296 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 297 gayle.pcc_config = 0; 298 pccard_attach_slot(&self->devs[0]); 299 } 300 splx(s); 301 302 tsleep(slot, PWAIT, "pccthread", hz); 303 } 304 } 305 306 static void 307 pccard_attach_slot(slot) 308 struct pccard_slot *slot; 309 { 310 if (!(slot->flags & SLOT_OCCUPIED) && 311 gayle.pcc_status & GAYLE_CCMEM_DETECT) { 312 if (pcmcia_card_attach(slot->card) == 0) 313 slot->flags |= SLOT_OCCUPIED; 314 } 315 } 316 317 static int 318 pcf_mem_alloc(pch, bsz, pcmh) 319 pcmcia_chipset_handle_t pch; 320 bus_size_t bsz; 321 struct pcmcia_mem_handle *pcmh; 322 { 323 struct pccard_slot *slot = (struct pccard_slot *) pch; 324 pcmh->memt = &slot->sc->attr_space; 325 pcmh->memh = pcmh->memt->base; 326 return 0; 327 } 328 329 static void 330 pcf_mem_free(pch, memh) 331 pcmcia_chipset_handle_t pch; 332 struct pcmcia_mem_handle *memh; 333 { 334 } 335 336 static int 337 pcf_mem_map(pch, kind, addr, size, pcmh, offsetp, windowp) 338 pcmcia_chipset_handle_t pch; 339 int kind; 340 bus_addr_t addr; 341 bus_size_t size; 342 struct pcmcia_mem_handle *pcmh; 343 bus_addr_t *offsetp; 344 int *windowp; 345 { 346 struct pccard_slot *slot = (struct pccard_slot *) pch; 347 348 /* Ignore width requirements */ 349 kind &= ~PCMCIA_WIDTH_MEM_MASK; 350 351 switch (kind) { 352 case PCMCIA_MEM_ATTR: 353 pcmh->memt = &slot->sc->attr_space; 354 break; 355 case PCMCIA_MEM_COMMON: 356 pcmh->memt = &slot->sc->mem_space; 357 break; 358 default: 359 /* This means that this code needs an update/a bugfix */ 360 printf(__FILE__ ": Unknown kind of PCMCIA memory\n"); 361 return 1; 362 } 363 364 bus_space_map(pcmh->memt, addr, size, 0, &pcmh->memh); 365 *offsetp = 0; 366 *windowp = 0; /* unused */ 367 368 return 0; 369 } 370 371 static void 372 pcf_mem_unmap(pch, win) 373 pcmcia_chipset_handle_t pch; 374 int win; 375 { 376 } 377 378 static int 379 pcf_io_alloc(pch, start, size, align, pcihp) 380 pcmcia_chipset_handle_t pch; 381 bus_addr_t start; 382 bus_size_t size; 383 bus_size_t align; 384 struct pcmcia_io_handle *pcihp; 385 { 386 struct pccard_slot *slot = (struct pccard_slot *) pch; 387 388 pcihp->iot = &slot->sc->io_space; 389 pcihp->ioh = pcihp->iot->base; 390 return 0; 391 } 392 393 static void 394 pcf_io_free(pch, pcihp) 395 pcmcia_chipset_handle_t pch; 396 struct pcmcia_io_handle *pcihp; 397 { 398 } 399 400 static int 401 pcf_io_map(pch, width, offset, size, pcihp, windowp) 402 pcmcia_chipset_handle_t pch; 403 int width; 404 bus_addr_t offset; 405 bus_size_t size; 406 struct pcmcia_io_handle *pcihp; 407 int *windowp; 408 { 409 struct pccard_slot *slot = (struct pccard_slot *) pch; 410 411 pcihp->iot = &slot->sc->io_space; 412 pcihp->ioh = offset; 413 414 *windowp = 0; /* unused */ 415 return 0; 416 } 417 418 static void 419 pcf_io_unmap(pch, win) 420 pcmcia_chipset_handle_t pch; 421 int win; 422 { 423 } 424 425 static void * 426 pcf_intr_establish(pch, pf, ipl, func, arg) 427 pcmcia_chipset_handle_t pch; 428 struct pcmcia_function *pf; 429 int ipl; 430 int (*func)(void *); 431 void *arg; 432 { 433 struct pccard_slot *slot = (struct pccard_slot *) pch; 434 int s; 435 436 s = splhigh(); 437 if (slot->intr_func == NULL) { 438 slot->intr_func = func; 439 slot->intr_arg = arg; 440 } else { 441 /* if we are here, we need to put intrs into a list */ 442 printf("ARGH! see " __FILE__ "\n"); 443 slot = NULL; 444 } 445 splx(s); 446 447 return slot; 448 } 449 450 static void 451 pcf_intr_disestablish(pch, intr_handler) 452 pcmcia_chipset_handle_t pch; 453 void *intr_handler; 454 { 455 struct pccard_slot *slot = (struct pccard_slot *) intr_handler; 456 457 if (slot != NULL) { 458 slot->intr_func = NULL; 459 slot->intr_arg = NULL; 460 } 461 } 462 463 static void 464 pcf_socket_enable(pch) 465 pcmcia_chipset_handle_t pch; 466 { 467 } 468 469 static void 470 pcf_socket_disable(pch) 471 pcmcia_chipset_handle_t pch; 472 { 473 } 474 475 476 static u_int8_t 477 pcmio_bsr1(h, o) 478 bus_space_handle_t h; 479 bus_size_t o; 480 { 481 return *((volatile u_int8_t *) h + o + (o & 1 ? 0xffff : 0)); 482 } 483 484 static void 485 pcmio_bsw1(h, o, v) 486 bus_space_handle_t h; 487 bus_size_t o; 488 unsigned v; 489 { 490 *((volatile u_int8_t *) h + o + (o & 1 ? 0xffff : 0)) = v; 491 } 492 493 static void 494 pcmio_bsrm1(h, o, p, c) 495 bus_space_handle_t h; 496 bus_size_t o; 497 u_int8_t *p; 498 bus_size_t c; 499 { 500 volatile u_int8_t *src = (volatile u_int8_t *) (h + o + 501 (o & 1 ? 0xffff : 0)); 502 503 504 /* XXX we can (should, must) optimize this if c >= 4 */ 505 for (; c > 0; c--) 506 *p++ = *src; 507 } 508 509 510 static void 511 pcmio_bswm1(h, o, p, c) 512 bus_space_handle_t h; 513 bus_size_t o; 514 const u_int8_t *p; 515 bus_size_t c; 516 { 517 volatile u_int8_t *dst = (volatile u_int8_t *) (h + o + 518 (o & 1 ? 0xffff : 0)); 519 520 521 /* XXX we can (should, must) optimize this if c >= 4 */ 522 for (; c > 0; c--) 523 *dst = *p++; 524 } 525 526 static void 527 pcmio_bsrr1(h, o, p, c) 528 bus_space_handle_t h; 529 bus_size_t o; 530 u_int8_t *p; 531 bus_size_t c; 532 { 533 volatile u_int8_t *cp1; 534 volatile u_int8_t *cp2; 535 volatile u_int8_t *temp; 536 537 if (o & 1) { 538 cp1 = (volatile u_int8_t *) h + o + 0x10000; 539 cp2 = (volatile u_int8_t *) h + o; 540 } else { 541 cp1 = (volatile u_int8_t *) h + o; 542 cp2 = (volatile u_int8_t *) h + o + 0x10000 + 2; 543 } 544 545 /* XXX we can (should, must) optimize this if c >= 4 */ 546 for (; c > 0; c--) { 547 *p++ = *cp1; 548 cp1 += 2; 549 550 /* swap pointers - hope gcc generates exg for this ;) */ 551 temp = cp1; 552 cp1 = cp2; 553 cp2 = temp; 554 } 555 } 556 557 558 static void 559 pcmio_bswr1(h, o, p, c) 560 bus_space_handle_t h; 561 bus_size_t o; 562 const u_int8_t *p; 563 bus_size_t c; 564 { 565 volatile u_int8_t *cp1; 566 volatile u_int8_t *cp2; 567 volatile u_int8_t *temp; 568 569 if (o & 1) { 570 cp1 = (volatile u_int8_t *) h + o + 0x10000; 571 cp2 = (volatile u_int8_t *) h + o; 572 } else { 573 cp1 = (volatile u_int8_t *) h + o; 574 cp2 = (volatile u_int8_t *) h + o + 0x10000 + 2; 575 } 576 577 /* XXX we can (should, must) optimize this if c >= 4 */ 578 for (; c > 0; c--) { 579 *cp1 = *p++; 580 cp1 += 2; 581 582 /* swap pointers - hope gcc generates exg for this ;) */ 583 temp = cp1; 584 cp1 = cp2; 585 cp2 = temp; 586 } 587 } 588 589 void 590 pcmio_bssr1(h, o, v, c) 591 bus_space_handle_t h; 592 bus_size_t o; 593 unsigned v; 594 bus_size_t c; 595 { 596 panic("pcmio_bssr1 is not defined (" __FILE__ ")"); 597 } 598 599 void 600 pcmio_bscr1(h, o, g, q, c) 601 bus_space_handle_t h; 602 bus_size_t o; 603 bus_space_handle_t g; 604 bus_size_t q; 605 bus_size_t c; 606 { 607 panic("pcmio_bscr1 is not defined (" __FILE__ ")"); 608 } 609
Indexes created Tue Sep 30 11:09:46 GMT 2025