if_cnw.c revision 1.18
1 /* $NetBSD: if_cnw.c,v 1.18 2001/07/07 16:49:57 thorpej 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 Bjrndalen 86 * Department of Computer Science 87 * University of Troms 88 * Norway 89 * johnm (at) 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 Troms, Norway. It is part of the Linix pcmcia-cs package that 99 * can be found at 100 * http://hyper.stanford.edu/HyperNews/get/pcmcia/home.html. The most 101 * recent version of the pcmcia-cs package when this driver was 102 * written was 3.0.6. 103 * 104 * Unfortunately, a lot of explicit numeric constants were used in the 105 * Linux driver. I have tried to use symbolic names whenever possible, 106 * but since I don't have any real hardware documentation, there's 107 * still one or two "magic numbers" :-(. 108 * 109 * Driver limitations: This driver doesn't do multicasting or receiver 110 * promiscuity, because of missing hardware documentation. I couldn't 111 * get receiver promiscuity to work, and I haven't even tried 112 * multicast. Volunteers are welcome, of course :-). 113 */ 114 115 #include "opt_inet.h" 116 #include "bpfilter.h" 117 118 #include <sys/param.h> 119 #include <sys/systm.h> 120 #include <sys/device.h> 121 #include <sys/socket.h> 122 #include <sys/mbuf.h> 123 #include <sys/ioctl.h> 124 #include <sys/proc.h> 125 126 #include <net/if.h> 127 128 #include <dev/pcmcia/if_cnwreg.h> 129 #include <dev/pcmcia/if_cnwioctl.h> 130 131 #include <dev/pcmcia/pcmciareg.h> 132 #include <dev/pcmcia/pcmciavar.h> 133 #include <dev/pcmcia/pcmciadevs.h> 134 135 #include <net/if_dl.h> 136 #include <net/if_ether.h> 137 138 #ifdef INET 139 #include <netinet/in.h> 140 #include <netinet/in_systm.h> 141 #include <netinet/in_var.h> 142 #include <netinet/ip.h> 143 #include <netinet/if_inarp.h> 144 #endif 145 146 #if NBPFILTER > 0 147 #include <net/bpf.h> 148 #include <net/bpfdesc.h> 149 #endif 150 151 /* 152 * Let these be patchable variables, initialized from macros that can 153 * be set in the kernel config file. Someone with lots of spare time 154 * could probably write a nice Netwave configuration program to do 155 * this a little bit more elegantly :-). 156 */ 157 #ifndef CNW_DOMAIN 158 #define CNW_DOMAIN 0x100 159 #endif 160 int cnw_domain = CNW_DOMAIN; /* Domain */ 161 #ifndef CNW_SCRAMBLEKEY 162 #define CNW_SCRAMBLEKEY 0 163 #endif 164 int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */ 165 166 /* 167 * The card appears to work much better when we only allow one packet 168 * "in the air" at a time. This is done by not allowing another packet 169 * on the card, even if there is room. Turning this off will allow the 170 * driver to stuff packets on the card as soon as a transmit buffer is 171 * available. This does increase the number of collisions, though. 172 * We can que a second packet if there are transmit buffers available, 173 * but we do not actually send the packet until the last packet has 174 * been written. 175 */ 176 #define ONE_AT_A_TIME 177 178 /* 179 * Netwave cards choke if we try to use io memory address >= 0x400. 180 * Even though, CIS tuple does not talk about this. 181 * Use memory mapped access. 182 */ 183 #define MEMORY_MAPPED 184 185 int cnw_match __P((struct device *, struct cfdata *, void *)); 186 void cnw_attach __P((struct device *, struct device *, void *)); 187 int cnw_detach __P((struct device *, int)); 188 189 int cnw_activate __P((struct device *, enum devact)); 190 191 struct cnw_softc { 192 struct device sc_dev; /* Device glue (must be first) */ 193 struct ethercom sc_ethercom; /* Ethernet common part */ 194 int sc_domain; /* Netwave domain */ 195 int sc_skey; /* Netwave scramble key */ 196 struct cnwstats sc_stats; 197 198 /* PCMCIA-specific stuff */ 199 struct pcmcia_function *sc_pf; /* PCMCIA function */ 200 #ifndef MEMORY_MAPPED 201 struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */ 202 int sc_iowin; /* ...window */ 203 bus_space_tag_t sc_iot; /* ...bus_space tag */ 204 bus_space_handle_t sc_ioh; /* ...bus_space handle */ 205 #endif 206 struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */ 207 bus_addr_t sc_memoff; /* ...offset */ 208 int sc_memwin; /* ...window */ 209 bus_space_tag_t sc_memt; /* ...bus_space tag */ 210 bus_space_handle_t sc_memh; /* ...bus_space handle */ 211 void *sc_ih; /* Interrupt cookie */ 212 struct timeval sc_txlast; /* When the last xmit was made */ 213 int sc_active; /* Currently xmitting a packet */ 214 215 int sc_resource; /* Resources alloc'ed on attach */ 216 #define CNW_RES_PCIC 1 217 #define CNW_RES_IO 2 218 #define CNW_RES_MEM 4 219 #define CNW_RES_NET 8 220 }; 221 222 struct cfattach cnw_ca = { 223 sizeof(struct cnw_softc), cnw_match, cnw_attach, cnw_detach, 224 cnw_activate 225 }; 226 227 228 void cnw_reset __P((struct cnw_softc *)); 229 void cnw_init __P((struct cnw_softc *)); 230 int cnw_enable __P((struct cnw_softc *sc)); 231 void cnw_disable __P((struct cnw_softc *sc)); 232 void cnw_config __P((struct cnw_softc *sc, u_int8_t *)); 233 void cnw_start __P((struct ifnet *)); 234 void cnw_transmit __P((struct cnw_softc *, struct mbuf *)); 235 struct mbuf *cnw_read __P((struct cnw_softc *)); 236 void cnw_recv __P((struct cnw_softc *)); 237 int cnw_intr __P((void *arg)); 238 int cnw_ioctl __P((struct ifnet *, u_long, caddr_t)); 239 void cnw_watchdog __P((struct ifnet *)); 240 static int cnw_setdomain __P((struct cnw_softc *, int)); 241 static int cnw_setkey __P((struct cnw_softc *, int)); 242 243 /* ---------------------------------------------------------------- */ 244 245 /* Help routines */ 246 static int wait_WOC __P((struct cnw_softc *, int)); 247 static int read16 __P((struct cnw_softc *, int)); 248 static int cnw_cmd __P((struct cnw_softc *, int, int, int, int)); 249 250 /* 251 * Wait until the WOC (Write Operation Complete) bit in the 252 * ASR (Adapter Status Register) is asserted. 253 */ 254 static int 255 wait_WOC(sc, line) 256 struct cnw_softc *sc; 257 int line; 258 { 259 int i, asr; 260 261 for (i = 0; i < 5000; i++) { 262 #ifndef MEMORY_MAPPED 263 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 264 #else 265 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 266 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 267 #endif 268 if (asr & CNW_ASR_WOC) 269 return (0); 270 DELAY(100); 271 } 272 if (line > 0) 273 printf("%s: wedged at line %d\n", sc->sc_dev.dv_xname, line); 274 return (1); 275 } 276 #define WAIT_WOC(sc) wait_WOC(sc, __LINE__) 277 278 279 /* 280 * Read a 16 bit value from the card. 281 */ 282 static int 283 read16(sc, offset) 284 struct cnw_softc *sc; 285 int offset; 286 { 287 int hi, lo; 288 int offs = sc->sc_memoff + offset; 289 290 /* This could presumably be done more efficient with 291 * bus_space_read_2(), but I don't know anything about the 292 * byte sex guarantees... Besides, this is pretty cheap as 293 * well :-) 294 */ 295 lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs); 296 hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1); 297 return ((hi << 8) | lo); 298 } 299 300 301 /* 302 * Send a command to the card by writing it to the command buffer. 303 */ 304 int 305 cnw_cmd(sc, cmd, count, arg1, arg2) 306 struct cnw_softc *sc; 307 int cmd, count, arg1, arg2; 308 { 309 int ptr = sc->sc_memoff + CNW_EREG_CB; 310 311 if (wait_WOC(sc, 0)) { 312 printf("%s: wedged when issuing cmd 0x%x\n", 313 sc->sc_dev.dv_xname, cmd); 314 /* 315 * We'll continue anyway, as that's probably the best 316 * thing we can do; at least the user knows there's a 317 * problem, and can reset the interface with ifconfig 318 * down/up. 319 */ 320 } 321 322 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd); 323 if (count > 0) { 324 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1); 325 if (count > 1) 326 bus_space_write_1(sc->sc_memt, sc->sc_memh, 327 ptr + 2, arg2); 328 } 329 bus_space_write_1(sc->sc_memt, sc->sc_memh, 330 ptr + count + 1, CNW_CMD_EOC); 331 return (0); 332 } 333 #define CNW_CMD0(sc, cmd) \ 334 do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0) 335 #define CNW_CMD1(sc, cmd, arg1) \ 336 do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0) 337 #define CNW_CMD2(sc, cmd, arg1, arg2) \ 338 do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0) 339 340 /* ---------------------------------------------------------------- */ 341 342 /* 343 * Reset the hardware. 344 */ 345 void 346 cnw_reset(sc) 347 struct cnw_softc *sc; 348 { 349 #ifdef CNW_DEBUG 350 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 351 printf("%s: resetting\n", sc->sc_dev.dv_xname); 352 #endif 353 wait_WOC(sc, 0); 354 #ifndef MEMORY_MAPPED 355 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET); 356 #else 357 bus_space_write_1(sc->sc_memt, sc->sc_memh, 358 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, CNW_PMR_RESET); 359 #endif 360 bus_space_write_1(sc->sc_memt, sc->sc_memh, 361 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC); 362 #ifndef MEMORY_MAPPED 363 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0); 364 #else 365 bus_space_write_1(sc->sc_memt, sc->sc_memh, 366 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, 0); 367 #endif 368 } 369 370 371 /* 372 * Initialize the card. 373 */ 374 void 375 cnw_init(sc) 376 struct cnw_softc *sc; 377 { 378 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 379 const u_int8_t rxmode = 380 CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP; 381 382 /* Reset the card */ 383 cnw_reset(sc); 384 385 /* Issue a NOP to check the card */ 386 CNW_CMD0(sc, CNW_CMD_NOP); 387 388 /* Set up receive configuration */ 389 CNW_CMD1(sc, CNW_CMD_SRC, 390 rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0)); 391 392 /* Set up transmit configuration */ 393 CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA); 394 395 /* Set domain */ 396 CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8); 397 398 /* Set scramble key */ 399 CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8); 400 401 /* Enable interrupts */ 402 WAIT_WOC(sc); 403 #ifndef MEMORY_MAPPED 404 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 405 CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); 406 #else 407 bus_space_write_1(sc->sc_memt, sc->sc_memh, 408 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_IMR, 409 CNW_IMR_IENA | CNW_IMR_RFU1); 410 #endif 411 412 /* Enable receiver */ 413 CNW_CMD0(sc, CNW_CMD_ER); 414 415 /* "Set the IENA bit in COR" */ 416 WAIT_WOC(sc); 417 #ifndef MEMORY_MAPPED 418 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR, 419 CNW_COR_IENA | CNW_COR_LVLREQ); 420 #else 421 bus_space_write_1(sc->sc_memt, sc->sc_memh, 422 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_COR, 423 CNW_COR_IENA | CNW_COR_LVLREQ); 424 #endif 425 } 426 427 428 /* 429 * Enable and initialize the card. 430 */ 431 int 432 cnw_enable(sc) 433 struct cnw_softc *sc; 434 { 435 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 436 437 if ((ifp->if_flags & IFF_RUNNING) != 0) 438 return (0); 439 440 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc); 441 if (sc->sc_ih == NULL) { 442 printf("%s: couldn't establish interrupt handler\n", 443 sc->sc_dev.dv_xname); 444 return (EIO); 445 } 446 if (pcmcia_function_enable(sc->sc_pf) != 0) { 447 printf("%s: couldn't enable card\n", sc->sc_dev.dv_xname); 448 return (EIO); 449 } 450 sc->sc_resource |= CNW_RES_PCIC; 451 cnw_init(sc); 452 ifp->if_flags &= ~IFF_OACTIVE; 453 ifp->if_flags |= IFF_RUNNING; 454 return (0); 455 } 456 457 458 /* 459 * Stop and disable the card. 460 */ 461 void 462 cnw_disable(sc) 463 struct cnw_softc *sc; 464 { 465 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 466 467 if ((ifp->if_flags & IFF_RUNNING) == 0) 468 return; 469 470 pcmcia_function_disable(sc->sc_pf); 471 sc->sc_resource &= ~CNW_RES_PCIC; 472 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 473 ifp->if_flags &= ~IFF_RUNNING; 474 ifp->if_timer = 0; 475 } 476 477 478 /* 479 * Match the hardware we handle. 480 */ 481 int 482 cnw_match(parent, match, aux) 483 struct device *parent; 484 struct cfdata *match; 485 void *aux; 486 { 487 struct pcmcia_attach_args *pa = aux; 488 489 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 490 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_801) 491 return 1; 492 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 493 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_802) 494 return 1; 495 return 0; 496 } 497 498 499 /* 500 * Attach the card. 501 */ 502 void 503 cnw_attach(parent, self, aux) 504 struct device *parent, *self; 505 void *aux; 506 { 507 struct cnw_softc *sc = (void *) self; 508 struct pcmcia_attach_args *pa = aux; 509 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 510 u_int8_t macaddr[ETHER_ADDR_LEN]; 511 int i; 512 bus_size_t memsize; 513 514 sc->sc_resource = 0; 515 516 /* Enable the card */ 517 sc->sc_pf = pa->pf; 518 pcmcia_function_init(sc->sc_pf, sc->sc_pf->cfe_head.sqh_first); 519 if (pcmcia_function_enable(sc->sc_pf)) { 520 printf(": function enable failed\n"); 521 return; 522 } 523 sc->sc_resource |= CNW_RES_PCIC; 524 525 /* Map I/O register and "memory" */ 526 #ifndef MEMORY_MAPPED 527 if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE, 528 &sc->sc_pcioh) != 0) { 529 printf(": can't allocate i/o space\n"); 530 goto fail; 531 } 532 if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, 0, 533 CNW_IO_SIZE, &sc->sc_pcioh, &sc->sc_iowin) != 0) { 534 printf(": can't map i/o space\n"); 535 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 536 goto fail; 537 } 538 sc->sc_iot = sc->sc_pcioh.iot; 539 sc->sc_ioh = sc->sc_pcioh.ioh; 540 sc->sc_resource |= CNW_RES_IO; 541 #endif 542 #ifndef MEMORY_MAPPED 543 memsize = CNW_MEM_SIZE; 544 #else 545 memsize = CNW_MEM_SIZE + CNW_IOM_SIZE; 546 #endif 547 if (pcmcia_mem_alloc(sc->sc_pf, memsize, &sc->sc_pcmemh) != 0) { 548 printf(": can't allocate memory\n"); 549 goto fail; 550 } 551 if (pcmcia_mem_map(sc->sc_pf, PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, 552 CNW_MEM_ADDR, memsize, &sc->sc_pcmemh, &sc->sc_memoff, 553 &sc->sc_memwin) != 0) { 554 printf(": can't map memory\n"); 555 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 556 goto fail; 557 } 558 sc->sc_memt = sc->sc_pcmemh.memt; 559 sc->sc_memh = sc->sc_pcmemh.memh; 560 sc->sc_resource |= CNW_RES_MEM; 561 switch (pa->product) { 562 case PCMCIA_PRODUCT_XIRCOM_CNW_801: 563 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_801); 564 break; 565 case PCMCIA_PRODUCT_XIRCOM_CNW_802: 566 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_802); 567 break; 568 } 569 570 /* Finish setup of softc */ 571 sc->sc_domain = cnw_domain; 572 sc->sc_skey = cnw_skey; 573 574 /* Get MAC address */ 575 cnw_reset(sc); 576 for (i = 0; i < ETHER_ADDR_LEN; i++) 577 macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, 578 sc->sc_memoff + CNW_EREG_PA + i); 579 printf("%s: address %s\n", sc->sc_dev.dv_xname, 580 ether_sprintf(macaddr)); 581 582 /* Set up ifnet structure */ 583 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 584 ifp->if_softc = sc; 585 ifp->if_start = cnw_start; 586 ifp->if_ioctl = cnw_ioctl; 587 ifp->if_watchdog = cnw_watchdog; 588 ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | 589 IFF_NOTRAILERS; 590 IFQ_SET_READY(&ifp->if_snd); 591 592 /* Attach the interface */ 593 if_attach(ifp); 594 ether_ifattach(ifp, macaddr); 595 596 sc->sc_resource |= CNW_RES_NET; 597 598 ifp->if_baudrate = IF_Mbps(1); 599 600 /* Disable the card now, and turn it on when the interface goes up */ 601 pcmcia_function_disable(sc->sc_pf); 602 sc->sc_resource &= ~CNW_RES_PCIC; 603 return; 604 605 fail: 606 #ifndef MEMORY_MAPPED 607 if ((sc->sc_resource & CNW_RES_IO) != 0) { 608 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 609 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 610 sc->sc_resource &= ~CNW_RES_IO; 611 } 612 #endif 613 if ((sc->sc_resource & CNW_RES_PCIC) != 0) { 614 pcmcia_function_disable(sc->sc_pf); 615 sc->sc_resource &= ~CNW_RES_PCIC; 616 } 617 } 618 619 /* 620 * Start outputting on the interface. 621 */ 622 void 623 cnw_start(ifp) 624 struct ifnet *ifp; 625 { 626 struct cnw_softc *sc = ifp->if_softc; 627 struct mbuf *m0; 628 int lif; 629 int asr; 630 #ifdef ONE_AT_A_TIME 631 struct timeval now; 632 #endif 633 634 #ifdef CNW_DEBUG 635 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 636 printf("%s: cnw_start\n", ifp->if_xname); 637 if (ifp->if_flags & IFF_OACTIVE) 638 printf("%s: cnw_start reentered\n", ifp->if_xname); 639 #endif 640 641 ifp->if_flags |= IFF_OACTIVE; 642 643 for (;;) { 644 #ifdef ONE_AT_A_TIME 645 microtime(&now); 646 now.tv_sec -= sc->sc_txlast.tv_sec; 647 now.tv_usec -= sc->sc_txlast.tv_usec; 648 if (now.tv_usec < 0) { 649 now.tv_usec += 1000000; 650 now.tv_sec--; 651 } 652 653 /* 654 * Don't ship this packet out until the last 655 * packet has left the building. 656 * If we have not tried to send a packet for 1/5 657 * a second then we assume we lost an interrupt, 658 * lets go on and send the next packet anyhow. 659 * 660 * I suppose we could check to see if it is okay 661 * to put additional packets on the card (beyond 662 * the one already waiting to be sent) but I don't 663 * think we would get any improvement in speed as 664 * we should have ample time to put the next packet 665 * on while this one is going out. 666 */ 667 if (sc->sc_active && now.tv_sec == 0 && now.tv_usec < 200000) 668 break; 669 #endif 670 671 /* Make sure the link integrity field is on */ 672 WAIT_WOC(sc); 673 lif = bus_space_read_1(sc->sc_memt, sc->sc_memh, 674 sc->sc_memoff + CNW_EREG_LIF); 675 if (lif == 0) { 676 #ifdef CNW_DEBUG 677 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 678 printf("%s: link integrity %d\n", lif); 679 #endif 680 break; 681 } 682 683 /* Is there any buffer space available on the card? */ 684 WAIT_WOC(sc); 685 #ifndef MEMORY_MAPPED 686 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 687 #else 688 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 689 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 690 #endif 691 if (!(asr & CNW_ASR_TXBA)) { 692 #ifdef CNW_DEBUG 693 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 694 printf("%s: no buffer space\n", ifp->if_xname); 695 #endif 696 break; 697 } 698 699 sc->sc_stats.nws_tx++; 700 701 IFQ_DEQUEUE(&ifp->if_snd, m0); 702 if (m0 == 0) 703 break; 704 705 #if NBPFILTER > 0 706 if (ifp->if_bpf) 707 bpf_mtap(ifp->if_bpf, m0); 708 #endif 709 710 cnw_transmit(sc, m0); 711 ++ifp->if_opackets; 712 ifp->if_timer = 3; /* start watchdog timer */ 713 714 microtime(&sc->sc_txlast); 715 sc->sc_active = 1; 716 } 717 718 ifp->if_flags &= ~IFF_OACTIVE; 719 } 720 721 /* 722 * Transmit a packet. 723 */ 724 void 725 cnw_transmit(sc, m0) 726 struct cnw_softc *sc; 727 struct mbuf *m0; 728 { 729 int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n; 730 struct mbuf *m; 731 u_int8_t *mptr; 732 733 /* Get buffer info from card */ 734 buffer = read16(sc, CNW_EREG_TDP); 735 bufsize = read16(sc, CNW_EREG_TDP + 2); 736 bufoffset = read16(sc, CNW_EREG_TDP + 4); 737 #ifdef CNW_DEBUG 738 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 739 printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n", 740 sc->sc_dev.dv_xname, buffer, bufsize, bufoffset); 741 #endif 742 743 /* Copy data from mbuf chain to card buffers */ 744 bufptr = sc->sc_memoff + buffer + bufoffset; 745 bufspace = bufsize; 746 len = 0; 747 for (m = m0; m; ) { 748 mptr = mtod(m, u_int8_t *); 749 mbytes = m->m_len; 750 len += mbytes; 751 while (mbytes > 0) { 752 if (bufspace == 0) { 753 buffer = read16(sc, buffer); 754 bufptr = sc->sc_memoff + buffer + bufoffset; 755 bufspace = bufsize; 756 #ifdef CNW_DEBUG 757 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 758 printf("%s: next buffer @0x%x\n", 759 sc->sc_dev.dv_xname, buffer); 760 #endif 761 } 762 n = mbytes <= bufspace ? mbytes : bufspace; 763 bus_space_write_region_1(sc->sc_memt, sc->sc_memh, 764 bufptr, mptr, n); 765 bufptr += n; 766 bufspace -= n; 767 mptr += n; 768 mbytes -= n; 769 } 770 MFREE(m, m0); 771 m = m0; 772 } 773 774 /* Issue transmit command */ 775 CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8); 776 } 777 778 779 /* 780 * Pull a packet from the card into an mbuf chain. 781 */ 782 struct mbuf * 783 cnw_read(sc) 784 struct cnw_softc *sc; 785 { 786 struct mbuf *m, *top, **mp; 787 int totbytes, buffer, bufbytes, bufptr, mbytes, n; 788 u_int8_t *mptr; 789 790 WAIT_WOC(sc); 791 totbytes = read16(sc, CNW_EREG_RDP); 792 #ifdef CNW_DEBUG 793 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 794 printf("%s: recv %d bytes\n", sc->sc_dev.dv_xname, totbytes); 795 #endif 796 buffer = CNW_EREG_RDP + 2; 797 bufbytes = 0; 798 bufptr = 0; /* XXX make gcc happy */ 799 800 MGETHDR(m, M_DONTWAIT, MT_DATA); 801 if (m == 0) 802 return (0); 803 m->m_pkthdr.rcvif = &sc->sc_ethercom.ec_if; 804 m->m_pkthdr.len = totbytes; 805 mbytes = MHLEN; 806 top = 0; 807 mp = ⊤ 808 809 while (totbytes > 0) { 810 if (top) { 811 MGET(m, M_DONTWAIT, MT_DATA); 812 if (m == 0) { 813 m_freem(top); 814 return (0); 815 } 816 mbytes = MLEN; 817 } 818 if (totbytes >= MINCLSIZE) { 819 MCLGET(m, M_DONTWAIT); 820 if ((m->m_flags & M_EXT) == 0) { 821 m_free(m); 822 m_freem(top); 823 return (0); 824 } 825 mbytes = MCLBYTES; 826 } 827 if (!top) { 828 int pad = ALIGN(sizeof(struct ether_header)) - 829 sizeof(struct ether_header); 830 m->m_data += pad; 831 mbytes -= pad; 832 } 833 mptr = mtod(m, u_int8_t *); 834 mbytes = m->m_len = min(totbytes, mbytes); 835 totbytes -= mbytes; 836 while (mbytes > 0) { 837 if (bufbytes == 0) { 838 buffer = read16(sc, buffer); 839 bufbytes = read16(sc, buffer + 2); 840 bufptr = sc->sc_memoff + buffer + 841 read16(sc, buffer + 4); 842 #ifdef CNW_DEBUG 843 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 844 printf("%s: %d bytes @0x%x+0x%x\n", 845 sc->sc_dev.dv_xname, bufbytes, 846 buffer, bufptr - buffer - 847 sc->sc_memoff); 848 #endif 849 } 850 n = mbytes <= bufbytes ? mbytes : bufbytes; 851 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 852 bufptr, mptr, n); 853 bufbytes -= n; 854 bufptr += n; 855 mbytes -= n; 856 mptr += n; 857 } 858 *mp = m; 859 mp = &m->m_next; 860 } 861 862 return (top); 863 } 864 865 866 /* 867 * Handle received packets. 868 */ 869 void 870 cnw_recv(sc) 871 struct cnw_softc *sc; 872 { 873 int rser; 874 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 875 struct mbuf *m; 876 877 for (;;) { 878 WAIT_WOC(sc); 879 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 880 sc->sc_memoff + CNW_EREG_RSER); 881 if (!(rser & CNW_RSER_RXAVAIL)) 882 return; 883 884 /* Pull packet off card */ 885 m = cnw_read(sc); 886 887 /* Acknowledge packet */ 888 CNW_CMD0(sc, CNW_CMD_SRP); 889 890 /* Did we manage to get the packet from the interface? */ 891 if (m == 0) { 892 ++ifp->if_ierrors; 893 return; 894 } 895 ++ifp->if_ipackets; 896 897 #if NBPFILTER > 0 898 if (ifp->if_bpf) 899 bpf_mtap(ifp->if_bpf, m); 900 #endif 901 902 /* Pass the packet up. */ 903 (*ifp->if_input)(ifp, m); 904 } 905 } 906 907 908 /* 909 * Interrupt handler. 910 */ 911 int 912 cnw_intr(arg) 913 void *arg; 914 { 915 struct cnw_softc *sc = arg; 916 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 917 int ret, status, rser, tser; 918 919 if ((sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) == 0 || 920 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 921 return (0); 922 ifp->if_timer = 0; /* stop watchdog timer */ 923 924 ret = 0; 925 for (;;) { 926 WAIT_WOC(sc); 927 #ifndef MEMORY_MAPPED 928 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 929 CNW_REG_CCSR); 930 #else 931 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 932 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_CCSR); 933 #endif 934 if (!(status & 0x02)) { 935 if (ret == 0) 936 printf("%s: spurious interrupt\n", 937 sc->sc_dev.dv_xname); 938 return (ret); 939 } 940 ret = 1; 941 #ifndef MEMORY_MAPPED 942 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 943 #else 944 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 945 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 946 #endif 947 948 /* Anything to receive? */ 949 if (status & CNW_ASR_RXRDY) { 950 sc->sc_stats.nws_rx++; 951 cnw_recv(sc); 952 } 953 954 /* Receive error */ 955 if (status & CNW_ASR_RXERR) { 956 /* 957 * I get a *lot* of spurious receive errors 958 * (many per second), even when the interface 959 * is quiescent, so we don't increment 960 * if_ierrors here. 961 */ 962 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 963 sc->sc_memoff + CNW_EREG_RSER); 964 965 /* RX statistics */ 966 sc->sc_stats.nws_rxerr++; 967 if (rser & CNW_RSER_RXBIG) 968 sc->sc_stats.nws_rxframe++; 969 if (rser & CNW_RSER_RXCRC) 970 sc->sc_stats.nws_rxcrcerror++; 971 if (rser & CNW_RSER_RXOVERRUN) 972 sc->sc_stats.nws_rxoverrun++; 973 if (rser & CNW_RSER_RXOVERFLOW) 974 sc->sc_stats.nws_rxoverflow++; 975 if (rser & CNW_RSER_RXERR) 976 sc->sc_stats.nws_rxerrors++; 977 if (rser & CNW_RSER_RXAVAIL) 978 sc->sc_stats.nws_rxavail++; 979 980 /* Clear error bits in RSER */ 981 WAIT_WOC(sc); 982 bus_space_write_1(sc->sc_memt, sc->sc_memh, 983 sc->sc_memoff + CNW_EREG_RSERW, 984 CNW_RSER_RXERR | 985 (rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG))); 986 /* Clear RXERR in ASR */ 987 WAIT_WOC(sc); 988 bus_space_write_1(sc->sc_memt, sc->sc_memh, 989 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR); 990 } 991 992 /* Transmit done */ 993 if (status & CNW_ASR_TXDN) { 994 tser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 995 CNW_EREG_TSER); 996 997 /* TX statistics */ 998 if (tser & CNW_TSER_TXERR) 999 sc->sc_stats.nws_txerrors++; 1000 if (tser & CNW_TSER_TXNOAP) 1001 sc->sc_stats.nws_txlostcd++; 1002 if (tser & CNW_TSER_TXGU) 1003 sc->sc_stats.nws_txabort++; 1004 1005 if (tser & CNW_TSER_TXOK) { 1006 sc->sc_stats.nws_txokay++; 1007 sc->sc_stats.nws_txretries[status & 0xf]++; 1008 WAIT_WOC(sc); 1009 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1010 sc->sc_memoff + CNW_EREG_TSERW, 1011 CNW_TSER_TXOK | CNW_TSER_RTRY); 1012 } 1013 1014 if (tser & CNW_TSER_ERROR) { 1015 ++ifp->if_oerrors; 1016 WAIT_WOC(sc); 1017 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1018 sc->sc_memoff + CNW_EREG_TSERW, 1019 (tser & CNW_TSER_ERROR) | 1020 CNW_TSER_RTRY); 1021 } 1022 1023 sc->sc_active = 0; 1024 ifp->if_flags &= ~IFF_OACTIVE; 1025 1026 /* Continue to send packets from the queue */ 1027 cnw_start(&sc->sc_ethercom.ec_if); 1028 } 1029 1030 } 1031 } 1032 1033 1034 /* 1035 * Handle device ioctls. 1036 */ 1037 int 1038 cnw_ioctl(ifp, cmd, data) 1039 struct ifnet *ifp; 1040 u_long cmd; 1041 caddr_t data; 1042 { 1043 struct cnw_softc *sc = ifp->if_softc; 1044 struct ifaddr *ifa = (struct ifaddr *)data; 1045 struct ifreq *ifr = (struct ifreq *)data; 1046 int s, error = 0; 1047 struct proc *p = curproc; /*XXX*/ 1048 1049 s = splnet(); 1050 1051 switch (cmd) { 1052 1053 case SIOCSIFADDR: 1054 if (!(ifp->if_flags & IFF_RUNNING) && 1055 (error = cnw_enable(sc)) != 0) 1056 break; 1057 ifp->if_flags |= IFF_UP; 1058 switch (ifa->ifa_addr->sa_family) { 1059 #ifdef INET 1060 case AF_INET: 1061 cnw_init(sc); 1062 arp_ifinit(&sc->sc_ethercom.ec_if, ifa); 1063 break; 1064 #endif 1065 default: 1066 cnw_init(sc); 1067 break; 1068 } 1069 break; 1070 1071 case SIOCSIFFLAGS: 1072 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_RUNNING) { 1073 /* 1074 * The interface is marked down and it is running, so 1075 * stop it. 1076 */ 1077 cnw_disable(sc); 1078 } else if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP){ 1079 /* 1080 * The interface is marked up and it is stopped, so 1081 * start it. 1082 */ 1083 error = cnw_enable(sc); 1084 } else { 1085 /* IFF_PROMISC may be changed */ 1086 cnw_init(sc); 1087 } 1088 break; 1089 1090 case SIOCADDMULTI: 1091 case SIOCDELMULTI: 1092 /* Update our multicast list. */ 1093 error = (cmd == SIOCADDMULTI) ? 1094 ether_addmulti(ifr, &sc->sc_ethercom) : 1095 ether_delmulti(ifr, &sc->sc_ethercom); 1096 if (error == ENETRESET || error == 0) { 1097 cnw_init(sc); 1098 error = 0; 1099 } 1100 break; 1101 1102 case SIOCGCNWDOMAIN: 1103 ((struct ifreq *)data)->ifr_domain = sc->sc_domain; 1104 break; 1105 1106 case SIOCSCNWDOMAIN: 1107 error = suser(p->p_ucred, &p->p_acflag); 1108 if (error) 1109 break; 1110 error = cnw_setdomain(sc, ifr->ifr_domain); 1111 break; 1112 1113 case SIOCSCNWKEY: 1114 error = suser(p->p_ucred, &p->p_acflag); 1115 if (error) 1116 break; 1117 error = cnw_setkey(sc, ifr->ifr_key); 1118 break; 1119 1120 case SIOCGCNWSTATUS: 1121 error = suser(p->p_ucred, &p->p_acflag); 1122 if (error) 1123 break; 1124 if ((ifp->if_flags & IFF_RUNNING) == 0) 1125 break; 1126 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 1127 sc->sc_memoff + CNW_EREG_CB, 1128 ((struct cnwstatus *)data)->data, 1129 sizeof(((struct cnwstatus *)data)->data)); 1130 break; 1131 1132 case SIOCGCNWSTATS: 1133 memcpy((void *)&(((struct cnwistats *)data)->stats), 1134 (void *)&sc->sc_stats, sizeof(struct cnwstats)); 1135 break; 1136 1137 default: 1138 error = EINVAL; 1139 break; 1140 } 1141 1142 splx(s); 1143 return (error); 1144 } 1145 1146 1147 /* 1148 * Device timeout/watchdog routine. Entered if the device neglects to 1149 * generate an interrupt after a transmit has been started on it. 1150 */ 1151 void 1152 cnw_watchdog(ifp) 1153 struct ifnet *ifp; 1154 { 1155 struct cnw_softc *sc = ifp->if_softc; 1156 1157 printf("%s: device timeout; card reset\n", sc->sc_dev.dv_xname); 1158 ++ifp->if_oerrors; 1159 cnw_init(sc); 1160 } 1161 1162 int 1163 cnw_setdomain(sc, domain) 1164 struct cnw_softc *sc; 1165 int domain; 1166 { 1167 int s; 1168 1169 if (domain & ~0x1ff) 1170 return EINVAL; 1171 1172 s = splnet(); 1173 CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8); 1174 splx(s); 1175 1176 sc->sc_domain = domain; 1177 return 0; 1178 } 1179 1180 int 1181 cnw_setkey(sc, key) 1182 struct cnw_softc *sc; 1183 int key; 1184 { 1185 int s; 1186 1187 if (key & ~0xffff) 1188 return EINVAL; 1189 1190 s = splnet(); 1191 CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8); 1192 splx(s); 1193 1194 sc->sc_skey = key; 1195 return 0; 1196 } 1197 1198 int 1199 cnw_activate(self, act) 1200 struct device *self; 1201 enum devact act; 1202 { 1203 struct cnw_softc *sc = (struct cnw_softc *)self; 1204 int rv = 0, s; 1205 1206 s = splnet(); 1207 switch (act) { 1208 case DVACT_ACTIVATE: 1209 rv = EOPNOTSUPP; 1210 break; 1211 1212 case DVACT_DEACTIVATE: 1213 if_deactivate(&sc->sc_ethercom.ec_if); 1214 break; 1215 } 1216 splx(s); 1217 return (rv); 1218 } 1219 1220 int 1221 cnw_detach(self, flags) 1222 struct device *self; 1223 int flags; 1224 { 1225 struct cnw_softc *sc = (struct cnw_softc *)self; 1226 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1227 1228 /* cnw_disable() checks IFF_RUNNING */ 1229 cnw_disable(sc); 1230 1231 if ((sc->sc_resource & CNW_RES_NET) != 0) { 1232 ether_ifdetach(ifp); 1233 if_detach(ifp); 1234 } 1235 1236 #ifndef MEMORY_MAPPED 1237 /* unmap and free our i/o windows */ 1238 if ((sc->sc_resource & CNW_RES_IO) != 0) { 1239 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 1240 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 1241 } 1242 #endif 1243 1244 /* unmap and free our memory windows */ 1245 if ((sc->sc_resource & CNW_RES_MEM) != 0) { 1246 pcmcia_mem_unmap(sc->sc_pf, sc->sc_memwin); 1247 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 1248 } 1249 1250 return (0); 1251 } 1252
Indexes created Tue Oct 28 12:10:06 GMT 2025