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sys/dev/pcmcia/if_cnw.c
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1 /* $NetBSD: if_cnw.c,v 1.25 2003/11/10 08:55:41 wiz Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Michael Eriksson. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1996, 1997 Berkeley Software Design, Inc. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that this notice is retained, 45 * the conditions in the following notices are met, and terms applying 46 * to contributors in the following notices also apply to Berkeley 47 * Software Design, Inc. 48 * 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by 57 * Berkeley Software Design, Inc. 58 * 4. Neither the name of the Berkeley Software Design, Inc. nor the names 59 * of its contributors may be used to endorse or promote products derived 60 * from this software without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * Paul Borman, December 1996 75 * 76 * This driver is derived from a generic frame work which is 77 * Copyright(c) 1994,1995,1996 78 * Yoichi Shinoda, Yoshitaka Tokugawa, WIDE Project, Wildboar Project 79 * and Foretune. All rights reserved. 80 * 81 * A linux driver was used as the "hardware reference manual" (i.e., 82 * to determine registers and a general outline of how the card works) 83 * That driver is publically available and copyright 84 * 85 * John Markus Bjørndalen 86 * Department of Computer Science 87 * University of Tromsø 88 * Norway 89 * johnm@staff.cs.uit.no, http://www.cs.uit.no/~johnm/ 90 */ 91 92 /* 93 * This is a driver for the Xircom CreditCard Netwave (also known as 94 * the Netwave Airsurfer) wireless LAN PCMCIA adapter. 95 * 96 * When this driver was developed, the Linux Netwave driver was used 97 * as a hardware manual. That driver is Copyright (c) 1997 University 98 * of Tromsø, Norway. It is part of the Linux pcmcia-cs package that 99 * can be found at http://pcmcia-cs.sourceforge.net/. The most recent 100 * version of the pcmcia-cs package when this driver was written was 101 * 3.0.6. 102 * 103 * Unfortunately, a lot of explicit numeric constants were used in the 104 * Linux driver. I have tried to use symbolic names whenever possible, 105 * but since I don't have any real hardware documentation, there's 106 * still one or two "magic numbers" :-(. 107 * 108 * Driver limitations: This driver doesn't do multicasting or receiver 109 * promiscuity, because of missing hardware documentation. I couldn't 110 * get receiver promiscuity to work, and I haven't even tried 111 * multicast. Volunteers are welcome, of course :-). 112 */ 113 114 #include <sys/cdefs.h> 115 __KERNEL_RCSID(0, "$NetBSD: if_cnw.c,v 1.25 2003/11/10 08:55:41 wiz Exp $"); 116 117 #include "opt_inet.h" 118 #include "bpfilter.h" 119 120 #include <sys/param.h> 121 #include <sys/systm.h> 122 #include <sys/device.h> 123 #include <sys/socket.h> 124 #include <sys/mbuf.h> 125 #include <sys/ioctl.h> 126 #include <sys/proc.h> 127 128 #include <net/if.h> 129 130 #include <dev/pcmcia/if_cnwreg.h> 131 #include <dev/pcmcia/if_cnwioctl.h> 132 133 #include <dev/pcmcia/pcmciareg.h> 134 #include <dev/pcmcia/pcmciavar.h> 135 #include <dev/pcmcia/pcmciadevs.h> 136 137 #include <net/if_dl.h> 138 #include <net/if_ether.h> 139 140 #ifdef INET 141 #include <netinet/in.h> 142 #include <netinet/in_systm.h> 143 #include <netinet/in_var.h> 144 #include <netinet/ip.h> 145 #include <netinet/if_inarp.h> 146 #endif 147 148 #if NBPFILTER > 0 149 #include <net/bpf.h> 150 #include <net/bpfdesc.h> 151 #endif 152 153 /* 154 * Let these be patchable variables, initialized from macros that can 155 * be set in the kernel config file. Someone with lots of spare time 156 * could probably write a nice Netwave configuration program to do 157 * this a little bit more elegantly :-). 158 */ 159 #ifndef CNW_DOMAIN 160 #define CNW_DOMAIN 0x100 161 #endif 162 int cnw_domain = CNW_DOMAIN; /* Domain */ 163 #ifndef CNW_SCRAMBLEKEY 164 #define CNW_SCRAMBLEKEY 0 165 #endif 166 int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */ 167 168 /* 169 * The card appears to work much better when we only allow one packet 170 * "in the air" at a time. This is done by not allowing another packet 171 * on the card, even if there is room. Turning this off will allow the 172 * driver to stuff packets on the card as soon as a transmit buffer is 173 * available. This does increase the number of collisions, though. 174 * We can que a second packet if there are transmit buffers available, 175 * but we do not actually send the packet until the last packet has 176 * been written. 177 */ 178 #define ONE_AT_A_TIME 179 180 /* 181 * Netwave cards choke if we try to use io memory address >= 0x400. 182 * Even though, CIS tuple does not talk about this. 183 * Use memory mapped access. 184 */ 185 #define MEMORY_MAPPED 186 187 int cnw_match __P((struct device *, struct cfdata *, void *)); 188 void cnw_attach __P((struct device *, struct device *, void *)); 189 int cnw_detach __P((struct device *, int)); 190 191 int cnw_activate __P((struct device *, enum devact)); 192 193 struct cnw_softc { 194 struct device sc_dev; /* Device glue (must be first) */ 195 struct ethercom sc_ethercom; /* Ethernet common part */ 196 int sc_domain; /* Netwave domain */ 197 int sc_skey; /* Netwave scramble key */ 198 struct cnwstats sc_stats; 199 200 /* PCMCIA-specific stuff */ 201 struct pcmcia_function *sc_pf; /* PCMCIA function */ 202 #ifndef MEMORY_MAPPED 203 struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */ 204 int sc_iowin; /* ...window */ 205 bus_space_tag_t sc_iot; /* ...bus_space tag */ 206 bus_space_handle_t sc_ioh; /* ...bus_space handle */ 207 #endif 208 struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */ 209 bus_size_t sc_memoff; /* ...offset */ 210 int sc_memwin; /* ...window */ 211 bus_space_tag_t sc_memt; /* ...bus_space tag */ 212 bus_space_handle_t sc_memh; /* ...bus_space handle */ 213 void *sc_ih; /* Interrupt cookie */ 214 struct timeval sc_txlast; /* When the last xmit was made */ 215 int sc_active; /* Currently xmitting a packet */ 216 217 int sc_resource; /* Resources alloc'ed on attach */ 218 #define CNW_RES_PCIC 1 219 #define CNW_RES_IO 2 220 #define CNW_RES_MEM 4 221 #define CNW_RES_NET 8 222 }; 223 224 CFATTACH_DECL(cnw, sizeof(struct cnw_softc), 225 cnw_match, cnw_attach, cnw_detach, cnw_activate); 226 227 void cnw_reset __P((struct cnw_softc *)); 228 void cnw_init __P((struct cnw_softc *)); 229 int cnw_enable __P((struct cnw_softc *sc)); 230 void cnw_disable __P((struct cnw_softc *sc)); 231 void cnw_config __P((struct cnw_softc *sc, u_int8_t *)); 232 void cnw_start __P((struct ifnet *)); 233 void cnw_transmit __P((struct cnw_softc *, struct mbuf *)); 234 struct mbuf *cnw_read __P((struct cnw_softc *)); 235 void cnw_recv __P((struct cnw_softc *)); 236 int cnw_intr __P((void *arg)); 237 int cnw_ioctl __P((struct ifnet *, u_long, caddr_t)); 238 void cnw_watchdog __P((struct ifnet *)); 239 static int cnw_setdomain __P((struct cnw_softc *, int)); 240 static int cnw_setkey __P((struct cnw_softc *, int)); 241 242 /* ---------------------------------------------------------------- */ 243 244 /* Help routines */ 245 static int wait_WOC __P((struct cnw_softc *, int)); 246 static int read16 __P((struct cnw_softc *, int)); 247 static int cnw_cmd __P((struct cnw_softc *, int, int, int, int)); 248 249 /* 250 * Wait until the WOC (Write Operation Complete) bit in the 251 * ASR (Adapter Status Register) is asserted. 252 */ 253 static int 254 wait_WOC(sc, line) 255 struct cnw_softc *sc; 256 int line; 257 { 258 int i, asr; 259 260 for (i = 0; i < 5000; i++) { 261 #ifndef MEMORY_MAPPED 262 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 263 #else 264 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 265 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 266 #endif 267 if (asr & CNW_ASR_WOC) 268 return (0); 269 DELAY(100); 270 } 271 if (line > 0) 272 printf("%s: wedged at line %d\n", sc->sc_dev.dv_xname, line); 273 return (1); 274 } 275 #define WAIT_WOC(sc) wait_WOC(sc, __LINE__) 276 277 278 /* 279 * Read a 16 bit value from the card. 280 */ 281 static int 282 read16(sc, offset) 283 struct cnw_softc *sc; 284 int offset; 285 { 286 int hi, lo; 287 int offs = sc->sc_memoff + offset; 288 289 /* This could presumably be done more efficient with 290 * bus_space_read_2(), but I don't know anything about the 291 * byte sex guarantees... Besides, this is pretty cheap as 292 * well :-) 293 */ 294 lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs); 295 hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1); 296 return ((hi << 8) | lo); 297 } 298 299 300 /* 301 * Send a command to the card by writing it to the command buffer. 302 */ 303 int 304 cnw_cmd(sc, cmd, count, arg1, arg2) 305 struct cnw_softc *sc; 306 int cmd, count, arg1, arg2; 307 { 308 int ptr = sc->sc_memoff + CNW_EREG_CB; 309 310 if (wait_WOC(sc, 0)) { 311 printf("%s: wedged when issuing cmd 0x%x\n", 312 sc->sc_dev.dv_xname, cmd); 313 /* 314 * We'll continue anyway, as that's probably the best 315 * thing we can do; at least the user knows there's a 316 * problem, and can reset the interface with ifconfig 317 * down/up. 318 */ 319 } 320 321 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd); 322 if (count > 0) { 323 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1); 324 if (count > 1) 325 bus_space_write_1(sc->sc_memt, sc->sc_memh, 326 ptr + 2, arg2); 327 } 328 bus_space_write_1(sc->sc_memt, sc->sc_memh, 329 ptr + count + 1, CNW_CMD_EOC); 330 return (0); 331 } 332 #define CNW_CMD0(sc, cmd) \ 333 do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0) 334 #define CNW_CMD1(sc, cmd, arg1) \ 335 do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0) 336 #define CNW_CMD2(sc, cmd, arg1, arg2) \ 337 do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0) 338 339 /* ---------------------------------------------------------------- */ 340 341 /* 342 * Reset the hardware. 343 */ 344 void 345 cnw_reset(sc) 346 struct cnw_softc *sc; 347 { 348 #ifdef CNW_DEBUG 349 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 350 printf("%s: resetting\n", sc->sc_dev.dv_xname); 351 #endif 352 wait_WOC(sc, 0); 353 #ifndef MEMORY_MAPPED 354 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET); 355 #else 356 bus_space_write_1(sc->sc_memt, sc->sc_memh, 357 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, CNW_PMR_RESET); 358 #endif 359 bus_space_write_1(sc->sc_memt, sc->sc_memh, 360 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC); 361 #ifndef MEMORY_MAPPED 362 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0); 363 #else 364 bus_space_write_1(sc->sc_memt, sc->sc_memh, 365 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, 0); 366 #endif 367 } 368 369 370 /* 371 * Initialize the card. 372 */ 373 void 374 cnw_init(sc) 375 struct cnw_softc *sc; 376 { 377 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 378 const u_int8_t rxmode = 379 CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP; 380 381 /* Reset the card */ 382 cnw_reset(sc); 383 384 /* Issue a NOP to check the card */ 385 CNW_CMD0(sc, CNW_CMD_NOP); 386 387 /* Set up receive configuration */ 388 CNW_CMD1(sc, CNW_CMD_SRC, 389 rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0)); 390 391 /* Set up transmit configuration */ 392 CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA); 393 394 /* Set domain */ 395 CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8); 396 397 /* Set scramble key */ 398 CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8); 399 400 /* Enable interrupts */ 401 WAIT_WOC(sc); 402 #ifndef MEMORY_MAPPED 403 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 404 CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); 405 #else 406 bus_space_write_1(sc->sc_memt, sc->sc_memh, 407 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_IMR, 408 CNW_IMR_IENA | CNW_IMR_RFU1); 409 #endif 410 411 /* Enable receiver */ 412 CNW_CMD0(sc, CNW_CMD_ER); 413 414 /* "Set the IENA bit in COR" */ 415 WAIT_WOC(sc); 416 #ifndef MEMORY_MAPPED 417 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR, 418 CNW_COR_IENA | CNW_COR_LVLREQ); 419 #else 420 bus_space_write_1(sc->sc_memt, sc->sc_memh, 421 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_COR, 422 CNW_COR_IENA | CNW_COR_LVLREQ); 423 #endif 424 } 425 426 427 /* 428 * Enable and initialize the card. 429 */ 430 int 431 cnw_enable(sc) 432 struct cnw_softc *sc; 433 { 434 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 435 436 if ((ifp->if_flags & IFF_RUNNING) != 0) 437 return (0); 438 439 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc); 440 if (sc->sc_ih == NULL) { 441 printf("%s: couldn't establish interrupt handler\n", 442 sc->sc_dev.dv_xname); 443 return (EIO); 444 } 445 if (pcmcia_function_enable(sc->sc_pf) != 0) { 446 printf("%s: couldn't enable card\n", sc->sc_dev.dv_xname); 447 return (EIO); 448 } 449 sc->sc_resource |= CNW_RES_PCIC; 450 cnw_init(sc); 451 ifp->if_flags &= ~IFF_OACTIVE; 452 ifp->if_flags |= IFF_RUNNING; 453 return (0); 454 } 455 456 457 /* 458 * Stop and disable the card. 459 */ 460 void 461 cnw_disable(sc) 462 struct cnw_softc *sc; 463 { 464 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 465 466 if ((ifp->if_flags & IFF_RUNNING) == 0) 467 return; 468 469 pcmcia_function_disable(sc->sc_pf); 470 sc->sc_resource &= ~CNW_RES_PCIC; 471 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 472 ifp->if_flags &= ~IFF_RUNNING; 473 ifp->if_timer = 0; 474 } 475 476 477 /* 478 * Match the hardware we handle. 479 */ 480 int 481 cnw_match(parent, match, aux) 482 struct device *parent; 483 struct cfdata *match; 484 void *aux; 485 { 486 struct pcmcia_attach_args *pa = aux; 487 488 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 489 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_801) 490 return 1; 491 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 492 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_802) 493 return 1; 494 return 0; 495 } 496 497 498 /* 499 * Attach the card. 500 */ 501 void 502 cnw_attach(parent, self, aux) 503 struct device *parent, *self; 504 void *aux; 505 { 506 struct cnw_softc *sc = (void *) self; 507 struct pcmcia_attach_args *pa = aux; 508 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 509 u_int8_t macaddr[ETHER_ADDR_LEN]; 510 int i; 511 bus_size_t memsize; 512 513 sc->sc_resource = 0; 514 515 /* Enable the card */ 516 sc->sc_pf = pa->pf; 517 pcmcia_function_init(sc->sc_pf, SIMPLEQ_FIRST(&sc->sc_pf->cfe_head)); 518 if (pcmcia_function_enable(sc->sc_pf)) { 519 printf(": function enable failed\n"); 520 return; 521 } 522 sc->sc_resource |= CNW_RES_PCIC; 523 524 /* Map I/O register and "memory" */ 525 #ifndef MEMORY_MAPPED 526 if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE, 527 &sc->sc_pcioh) != 0) { 528 printf(": can't allocate i/o space\n"); 529 goto fail; 530 } 531 if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, 0, 532 CNW_IO_SIZE, &sc->sc_pcioh, &sc->sc_iowin) != 0) { 533 printf(": can't map i/o space\n"); 534 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 535 goto fail; 536 } 537 sc->sc_iot = sc->sc_pcioh.iot; 538 sc->sc_ioh = sc->sc_pcioh.ioh; 539 sc->sc_resource |= CNW_RES_IO; 540 #endif 541 #ifndef MEMORY_MAPPED 542 memsize = CNW_MEM_SIZE; 543 #else 544 memsize = CNW_MEM_SIZE + CNW_IOM_SIZE; 545 #endif 546 if (pcmcia_mem_alloc(sc->sc_pf, memsize, &sc->sc_pcmemh) != 0) { 547 printf(": can't allocate memory\n"); 548 goto fail; 549 } 550 if (pcmcia_mem_map(sc->sc_pf, PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, 551 CNW_MEM_ADDR, memsize, &sc->sc_pcmemh, &sc->sc_memoff, 552 &sc->sc_memwin) != 0) { 553 printf(": can't map memory\n"); 554 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 555 goto fail; 556 } 557 sc->sc_memt = sc->sc_pcmemh.memt; 558 sc->sc_memh = sc->sc_pcmemh.memh; 559 sc->sc_resource |= CNW_RES_MEM; 560 switch (pa->product) { 561 case PCMCIA_PRODUCT_XIRCOM_CNW_801: 562 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_801); 563 break; 564 case PCMCIA_PRODUCT_XIRCOM_CNW_802: 565 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_802); 566 break; 567 } 568 569 /* Finish setup of softc */ 570 sc->sc_domain = cnw_domain; 571 sc->sc_skey = cnw_skey; 572 573 /* Get MAC address */ 574 cnw_reset(sc); 575 for (i = 0; i < ETHER_ADDR_LEN; i++) 576 macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, 577 sc->sc_memoff + CNW_EREG_PA + i); 578 printf("%s: address %s\n", sc->sc_dev.dv_xname, 579 ether_sprintf(macaddr)); 580 581 /* Set up ifnet structure */ 582 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 583 ifp->if_softc = sc; 584 ifp->if_start = cnw_start; 585 ifp->if_ioctl = cnw_ioctl; 586 ifp->if_watchdog = cnw_watchdog; 587 ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | 588 IFF_NOTRAILERS; 589 IFQ_SET_READY(&ifp->if_snd); 590 591 /* Attach the interface */ 592 if_attach(ifp); 593 ether_ifattach(ifp, macaddr); 594 595 sc->sc_resource |= CNW_RES_NET; 596 597 ifp->if_baudrate = IF_Mbps(1); 598 599 /* Disable the card now, and turn it on when the interface goes up */ 600 pcmcia_function_disable(sc->sc_pf); 601 sc->sc_resource &= ~CNW_RES_PCIC; 602 return; 603 604 fail: 605 #ifndef MEMORY_MAPPED 606 if ((sc->sc_resource & CNW_RES_IO) != 0) { 607 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 608 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 609 sc->sc_resource &= ~CNW_RES_IO; 610 } 611 #endif 612 if ((sc->sc_resource & CNW_RES_PCIC) != 0) { 613 pcmcia_function_disable(sc->sc_pf); 614 sc->sc_resource &= ~CNW_RES_PCIC; 615 } 616 } 617 618 /* 619 * Start outputting on the interface. 620 */ 621 void 622 cnw_start(ifp) 623 struct ifnet *ifp; 624 { 625 struct cnw_softc *sc = ifp->if_softc; 626 struct mbuf *m0; 627 int lif; 628 int asr; 629 #ifdef ONE_AT_A_TIME 630 struct timeval now; 631 #endif 632 633 #ifdef CNW_DEBUG 634 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 635 printf("%s: cnw_start\n", ifp->if_xname); 636 if (ifp->if_flags & IFF_OACTIVE) 637 printf("%s: cnw_start reentered\n", ifp->if_xname); 638 #endif 639 640 ifp->if_flags |= IFF_OACTIVE; 641 642 for (;;) { 643 #ifdef ONE_AT_A_TIME 644 microtime(&now); 645 now.tv_sec -= sc->sc_txlast.tv_sec; 646 now.tv_usec -= sc->sc_txlast.tv_usec; 647 if (now.tv_usec < 0) { 648 now.tv_usec += 1000000; 649 now.tv_sec--; 650 } 651 652 /* 653 * Don't ship this packet out until the last 654 * packet has left the building. 655 * If we have not tried to send a packet for 1/5 656 * a second then we assume we lost an interrupt, 657 * lets go on and send the next packet anyhow. 658 * 659 * I suppose we could check to see if it is okay 660 * to put additional packets on the card (beyond 661 * the one already waiting to be sent) but I don't 662 * think we would get any improvement in speed as 663 * we should have ample time to put the next packet 664 * on while this one is going out. 665 */ 666 if (sc->sc_active && now.tv_sec == 0 && now.tv_usec < 200000) 667 break; 668 #endif 669 670 /* Make sure the link integrity field is on */ 671 WAIT_WOC(sc); 672 lif = bus_space_read_1(sc->sc_memt, sc->sc_memh, 673 sc->sc_memoff + CNW_EREG_LIF); 674 if (lif == 0) { 675 #ifdef CNW_DEBUG 676 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 677 printf("%s: link integrity %d\n", lif); 678 #endif 679 break; 680 } 681 682 /* Is there any buffer space available on the card? */ 683 WAIT_WOC(sc); 684 #ifndef MEMORY_MAPPED 685 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 686 #else 687 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 688 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 689 #endif 690 if (!(asr & CNW_ASR_TXBA)) { 691 #ifdef CNW_DEBUG 692 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 693 printf("%s: no buffer space\n", ifp->if_xname); 694 #endif 695 break; 696 } 697 698 sc->sc_stats.nws_tx++; 699 700 IFQ_DEQUEUE(&ifp->if_snd, m0); 701 if (m0 == 0) 702 break; 703 704 #if NBPFILTER > 0 705 if (ifp->if_bpf) 706 bpf_mtap(ifp->if_bpf, m0); 707 #endif 708 709 cnw_transmit(sc, m0); 710 ++ifp->if_opackets; 711 ifp->if_timer = 3; /* start watchdog timer */ 712 713 microtime(&sc->sc_txlast); 714 sc->sc_active = 1; 715 } 716 717 ifp->if_flags &= ~IFF_OACTIVE; 718 } 719 720 /* 721 * Transmit a packet. 722 */ 723 void 724 cnw_transmit(sc, m0) 725 struct cnw_softc *sc; 726 struct mbuf *m0; 727 { 728 int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n; 729 struct mbuf *m; 730 u_int8_t *mptr; 731 732 /* Get buffer info from card */ 733 buffer = read16(sc, CNW_EREG_TDP); 734 bufsize = read16(sc, CNW_EREG_TDP + 2); 735 bufoffset = read16(sc, CNW_EREG_TDP + 4); 736 #ifdef CNW_DEBUG 737 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 738 printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n", 739 sc->sc_dev.dv_xname, buffer, bufsize, bufoffset); 740 #endif 741 742 /* Copy data from mbuf chain to card buffers */ 743 bufptr = sc->sc_memoff + buffer + bufoffset; 744 bufspace = bufsize; 745 len = 0; 746 for (m = m0; m; ) { 747 mptr = mtod(m, u_int8_t *); 748 mbytes = m->m_len; 749 len += mbytes; 750 while (mbytes > 0) { 751 if (bufspace == 0) { 752 buffer = read16(sc, buffer); 753 bufptr = sc->sc_memoff + buffer + bufoffset; 754 bufspace = bufsize; 755 #ifdef CNW_DEBUG 756 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 757 printf("%s: next buffer @0x%x\n", 758 sc->sc_dev.dv_xname, buffer); 759 #endif 760 } 761 n = mbytes <= bufspace ? mbytes : bufspace; 762 bus_space_write_region_1(sc->sc_memt, sc->sc_memh, 763 bufptr, mptr, n); 764 bufptr += n; 765 bufspace -= n; 766 mptr += n; 767 mbytes -= n; 768 } 769 MFREE(m, m0); 770 m = m0; 771 } 772 773 /* Issue transmit command */ 774 CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8); 775 } 776 777 778 /* 779 * Pull a packet from the card into an mbuf chain. 780 */ 781 struct mbuf * 782 cnw_read(sc) 783 struct cnw_softc *sc; 784 { 785 struct mbuf *m, *top, **mp; 786 int totbytes, buffer, bufbytes, bufptr, mbytes, n; 787 u_int8_t *mptr; 788 789 WAIT_WOC(sc); 790 totbytes = read16(sc, CNW_EREG_RDP); 791 #ifdef CNW_DEBUG 792 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 793 printf("%s: recv %d bytes\n", sc->sc_dev.dv_xname, totbytes); 794 #endif 795 buffer = CNW_EREG_RDP + 2; 796 bufbytes = 0; 797 bufptr = 0; /* XXX make gcc happy */ 798 799 MGETHDR(m, M_DONTWAIT, MT_DATA); 800 if (m == 0) 801 return (0); 802 m->m_pkthdr.rcvif = &sc->sc_ethercom.ec_if; 803 m->m_pkthdr.len = totbytes; 804 mbytes = MHLEN; 805 top = 0; 806 mp = ⊤ 807 808 while (totbytes > 0) { 809 if (top) { 810 MGET(m, M_DONTWAIT, MT_DATA); 811 if (m == 0) { 812 m_freem(top); 813 return (0); 814 } 815 mbytes = MLEN; 816 } 817 if (totbytes >= MINCLSIZE) { 818 MCLGET(m, M_DONTWAIT); 819 if ((m->m_flags & M_EXT) == 0) { 820 m_free(m); 821 m_freem(top); 822 return (0); 823 } 824 mbytes = MCLBYTES; 825 } 826 if (!top) { 827 int pad = ALIGN(sizeof(struct ether_header)) - 828 sizeof(struct ether_header); 829 m->m_data += pad; 830 mbytes -= pad; 831 } 832 mptr = mtod(m, u_int8_t *); 833 mbytes = m->m_len = min(totbytes, mbytes); 834 totbytes -= mbytes; 835 while (mbytes > 0) { 836 if (bufbytes == 0) { 837 buffer = read16(sc, buffer); 838 bufbytes = read16(sc, buffer + 2); 839 bufptr = sc->sc_memoff + buffer + 840 read16(sc, buffer + 4); 841 #ifdef CNW_DEBUG 842 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 843 printf("%s: %d bytes @0x%x+0x%x\n", 844 sc->sc_dev.dv_xname, bufbytes, 845 buffer, bufptr - buffer - 846 sc->sc_memoff); 847 #endif 848 } 849 n = mbytes <= bufbytes ? mbytes : bufbytes; 850 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 851 bufptr, mptr, n); 852 bufbytes -= n; 853 bufptr += n; 854 mbytes -= n; 855 mptr += n; 856 } 857 *mp = m; 858 mp = &m->m_next; 859 } 860 861 return (top); 862 } 863 864 865 /* 866 * Handle received packets. 867 */ 868 void 869 cnw_recv(sc) 870 struct cnw_softc *sc; 871 { 872 int rser; 873 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 874 struct mbuf *m; 875 876 for (;;) { 877 WAIT_WOC(sc); 878 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 879 sc->sc_memoff + CNW_EREG_RSER); 880 if (!(rser & CNW_RSER_RXAVAIL)) 881 return; 882 883 /* Pull packet off card */ 884 m = cnw_read(sc); 885 886 /* Acknowledge packet */ 887 CNW_CMD0(sc, CNW_CMD_SRP); 888 889 /* Did we manage to get the packet from the interface? */ 890 if (m == 0) { 891 ++ifp->if_ierrors; 892 return; 893 } 894 ++ifp->if_ipackets; 895 896 #if NBPFILTER > 0 897 if (ifp->if_bpf) 898 bpf_mtap(ifp->if_bpf, m); 899 #endif 900 901 /* Pass the packet up. */ 902 (*ifp->if_input)(ifp, m); 903 } 904 } 905 906 907 /* 908 * Interrupt handler. 909 */ 910 int 911 cnw_intr(arg) 912 void *arg; 913 { 914 struct cnw_softc *sc = arg; 915 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 916 int ret, status, rser, tser; 917 918 if ((sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) == 0 || 919 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 920 return (0); 921 ifp->if_timer = 0; /* stop watchdog timer */ 922 923 ret = 0; 924 for (;;) { 925 WAIT_WOC(sc); 926 #ifndef MEMORY_MAPPED 927 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 928 CNW_REG_CCSR); 929 #else 930 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 931 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_CCSR); 932 #endif 933 if (!(status & 0x02)) { 934 if (ret == 0) 935 printf("%s: spurious interrupt\n", 936 sc->sc_dev.dv_xname); 937 return (ret); 938 } 939 ret = 1; 940 #ifndef MEMORY_MAPPED 941 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 942 #else 943 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 944 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 945 #endif 946 947 /* Anything to receive? */ 948 if (status & CNW_ASR_RXRDY) { 949 sc->sc_stats.nws_rx++; 950 cnw_recv(sc); 951 } 952 953 /* Receive error */ 954 if (status & CNW_ASR_RXERR) { 955 /* 956 * I get a *lot* of spurious receive errors 957 * (many per second), even when the interface 958 * is quiescent, so we don't increment 959 * if_ierrors here. 960 */ 961 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 962 sc->sc_memoff + CNW_EREG_RSER); 963 964 /* RX statistics */ 965 sc->sc_stats.nws_rxerr++; 966 if (rser & CNW_RSER_RXBIG) 967 sc->sc_stats.nws_rxframe++; 968 if (rser & CNW_RSER_RXCRC) 969 sc->sc_stats.nws_rxcrcerror++; 970 if (rser & CNW_RSER_RXOVERRUN) 971 sc->sc_stats.nws_rxoverrun++; 972 if (rser & CNW_RSER_RXOVERFLOW) 973 sc->sc_stats.nws_rxoverflow++; 974 if (rser & CNW_RSER_RXERR) 975 sc->sc_stats.nws_rxerrors++; 976 if (rser & CNW_RSER_RXAVAIL) 977 sc->sc_stats.nws_rxavail++; 978 979 /* Clear error bits in RSER */ 980 WAIT_WOC(sc); 981 bus_space_write_1(sc->sc_memt, sc->sc_memh, 982 sc->sc_memoff + CNW_EREG_RSERW, 983 CNW_RSER_RXERR | 984 (rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG))); 985 /* Clear RXERR in ASR */ 986 WAIT_WOC(sc); 987 bus_space_write_1(sc->sc_memt, sc->sc_memh, 988 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR); 989 } 990 991 /* Transmit done */ 992 if (status & CNW_ASR_TXDN) { 993 tser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 994 CNW_EREG_TSER); 995 996 /* TX statistics */ 997 if (tser & CNW_TSER_TXERR) 998 sc->sc_stats.nws_txerrors++; 999 if (tser & CNW_TSER_TXNOAP) 1000 sc->sc_stats.nws_txlostcd++; 1001 if (tser & CNW_TSER_TXGU) 1002 sc->sc_stats.nws_txabort++; 1003 1004 if (tser & CNW_TSER_TXOK) { 1005 sc->sc_stats.nws_txokay++; 1006 sc->sc_stats.nws_txretries[status & 0xf]++; 1007 WAIT_WOC(sc); 1008 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1009 sc->sc_memoff + CNW_EREG_TSERW, 1010 CNW_TSER_TXOK | CNW_TSER_RTRY); 1011 } 1012 1013 if (tser & CNW_TSER_ERROR) { 1014 ++ifp->if_oerrors; 1015 WAIT_WOC(sc); 1016 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1017 sc->sc_memoff + CNW_EREG_TSERW, 1018 (tser & CNW_TSER_ERROR) | 1019 CNW_TSER_RTRY); 1020 } 1021 1022 sc->sc_active = 0; 1023 ifp->if_flags &= ~IFF_OACTIVE; 1024 1025 /* Continue to send packets from the queue */ 1026 cnw_start(&sc->sc_ethercom.ec_if); 1027 } 1028 1029 } 1030 } 1031 1032 1033 /* 1034 * Handle device ioctls. 1035 */ 1036 int 1037 cnw_ioctl(ifp, cmd, data) 1038 struct ifnet *ifp; 1039 u_long cmd; 1040 caddr_t data; 1041 { 1042 struct cnw_softc *sc = ifp->if_softc; 1043 struct ifaddr *ifa = (struct ifaddr *)data; 1044 struct ifreq *ifr = (struct ifreq *)data; 1045 int s, error = 0; 1046 struct proc *p = curproc; /*XXX*/ 1047 1048 s = splnet(); 1049 1050 switch (cmd) { 1051 1052 case SIOCSIFADDR: 1053 if (!(ifp->if_flags & IFF_RUNNING) && 1054 (error = cnw_enable(sc)) != 0) 1055 break; 1056 ifp->if_flags |= IFF_UP; 1057 switch (ifa->ifa_addr->sa_family) { 1058 #ifdef INET 1059 case AF_INET: 1060 cnw_init(sc); 1061 arp_ifinit(&sc->sc_ethercom.ec_if, ifa); 1062 break; 1063 #endif 1064 default: 1065 cnw_init(sc); 1066 break; 1067 } 1068 break; 1069 1070 case SIOCSIFFLAGS: 1071 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_RUNNING) { 1072 /* 1073 * The interface is marked down and it is running, so 1074 * stop it. 1075 */ 1076 cnw_disable(sc); 1077 } else if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP){ 1078 /* 1079 * The interface is marked up and it is stopped, so 1080 * start it. 1081 */ 1082 error = cnw_enable(sc); 1083 } else { 1084 /* IFF_PROMISC may be changed */ 1085 cnw_init(sc); 1086 } 1087 break; 1088 1089 case SIOCADDMULTI: 1090 case SIOCDELMULTI: 1091 /* Update our multicast list. */ 1092 error = (cmd == SIOCADDMULTI) ? 1093 ether_addmulti(ifr, &sc->sc_ethercom) : 1094 ether_delmulti(ifr, &sc->sc_ethercom); 1095 if (error == ENETRESET || error == 0) { 1096 cnw_init(sc); 1097 error = 0; 1098 } 1099 break; 1100 1101 case SIOCGCNWDOMAIN: 1102 ((struct ifreq *)data)->ifr_domain = sc->sc_domain; 1103 break; 1104 1105 case SIOCSCNWDOMAIN: 1106 error = suser(p->p_ucred, &p->p_acflag); 1107 if (error) 1108 break; 1109 error = cnw_setdomain(sc, ifr->ifr_domain); 1110 break; 1111 1112 case SIOCSCNWKEY: 1113 error = suser(p->p_ucred, &p->p_acflag); 1114 if (error) 1115 break; 1116 error = cnw_setkey(sc, ifr->ifr_key); 1117 break; 1118 1119 case SIOCGCNWSTATUS: 1120 error = suser(p->p_ucred, &p->p_acflag); 1121 if (error) 1122 break; 1123 if ((ifp->if_flags & IFF_RUNNING) == 0) 1124 break; 1125 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 1126 sc->sc_memoff + CNW_EREG_CB, 1127 ((struct cnwstatus *)data)->data, 1128 sizeof(((struct cnwstatus *)data)->data)); 1129 break; 1130 1131 case SIOCGCNWSTATS: 1132 memcpy((void *)&(((struct cnwistats *)data)->stats), 1133 (void *)&sc->sc_stats, sizeof(struct cnwstats)); 1134 break; 1135 1136 default: 1137 error = EINVAL; 1138 break; 1139 } 1140 1141 splx(s); 1142 return (error); 1143 } 1144 1145 1146 /* 1147 * Device timeout/watchdog routine. Entered if the device neglects to 1148 * generate an interrupt after a transmit has been started on it. 1149 */ 1150 void 1151 cnw_watchdog(ifp) 1152 struct ifnet *ifp; 1153 { 1154 struct cnw_softc *sc = ifp->if_softc; 1155 1156 printf("%s: device timeout; card reset\n", sc->sc_dev.dv_xname); 1157 ++ifp->if_oerrors; 1158 cnw_init(sc); 1159 } 1160 1161 int 1162 cnw_setdomain(sc, domain) 1163 struct cnw_softc *sc; 1164 int domain; 1165 { 1166 int s; 1167 1168 if (domain & ~0x1ff) 1169 return EINVAL; 1170 1171 s = splnet(); 1172 CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8); 1173 splx(s); 1174 1175 sc->sc_domain = domain; 1176 return 0; 1177 } 1178 1179 int 1180 cnw_setkey(sc, key) 1181 struct cnw_softc *sc; 1182 int key; 1183 { 1184 int s; 1185 1186 if (key & ~0xffff) 1187 return EINVAL; 1188 1189 s = splnet(); 1190 CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8); 1191 splx(s); 1192 1193 sc->sc_skey = key; 1194 return 0; 1195 } 1196 1197 int 1198 cnw_activate(self, act) 1199 struct device *self; 1200 enum devact act; 1201 { 1202 struct cnw_softc *sc = (struct cnw_softc *)self; 1203 int rv = 0, s; 1204 1205 s = splnet(); 1206 switch (act) { 1207 case DVACT_ACTIVATE: 1208 rv = EOPNOTSUPP; 1209 break; 1210 1211 case DVACT_DEACTIVATE: 1212 if_deactivate(&sc->sc_ethercom.ec_if); 1213 break; 1214 } 1215 splx(s); 1216 return (rv); 1217 } 1218 1219 int 1220 cnw_detach(self, flags) 1221 struct device *self; 1222 int flags; 1223 { 1224 struct cnw_softc *sc = (struct cnw_softc *)self; 1225 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1226 1227 /* cnw_disable() checks IFF_RUNNING */ 1228 cnw_disable(sc); 1229 1230 if ((sc->sc_resource & CNW_RES_NET) != 0) { 1231 ether_ifdetach(ifp); 1232 if_detach(ifp); 1233 } 1234 1235 #ifndef MEMORY_MAPPED 1236 /* unmap and free our i/o windows */ 1237 if ((sc->sc_resource & CNW_RES_IO) != 0) { 1238 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 1239 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 1240 } 1241 #endif 1242 1243 /* unmap and free our memory windows */ 1244 if ((sc->sc_resource & CNW_RES_MEM) != 0) { 1245 pcmcia_mem_unmap(sc->sc_pf, sc->sc_memwin); 1246 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 1247 } 1248 1249 return (0); 1250 }
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