if_cnw.c revision 1.17.2.3
1 /* $NetBSD: if_cnw.c,v 1.17.2.3 2001/11/14 19:15:37 nathanw 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 <sys/cdefs.h> 116 __KERNEL_RCSID(0, "$NetBSD: if_cnw.c,v 1.17.2.3 2001/11/14 19:15:37 nathanw Exp $"); 117 118 #include "opt_inet.h" 119 #include "bpfilter.h" 120 121 #include <sys/param.h> 122 #include <sys/systm.h> 123 #include <sys/device.h> 124 #include <sys/socket.h> 125 #include <sys/mbuf.h> 126 #include <sys/ioctl.h> 127 #include <sys/lwp.h> 128 #include <sys/proc.h> 129 130 #include <net/if.h> 131 132 #include <dev/pcmcia/if_cnwreg.h> 133 #include <dev/pcmcia/if_cnwioctl.h> 134 135 #include <dev/pcmcia/pcmciareg.h> 136 #include <dev/pcmcia/pcmciavar.h> 137 #include <dev/pcmcia/pcmciadevs.h> 138 139 #include <net/if_dl.h> 140 #include <net/if_ether.h> 141 142 #ifdef INET 143 #include <netinet/in.h> 144 #include <netinet/in_systm.h> 145 #include <netinet/in_var.h> 146 #include <netinet/ip.h> 147 #include <netinet/if_inarp.h> 148 #endif 149 150 #if NBPFILTER > 0 151 #include <net/bpf.h> 152 #include <net/bpfdesc.h> 153 #endif 154 155 /* 156 * Let these be patchable variables, initialized from macros that can 157 * be set in the kernel config file. Someone with lots of spare time 158 * could probably write a nice Netwave configuration program to do 159 * this a little bit more elegantly :-). 160 */ 161 #ifndef CNW_DOMAIN 162 #define CNW_DOMAIN 0x100 163 #endif 164 int cnw_domain = CNW_DOMAIN; /* Domain */ 165 #ifndef CNW_SCRAMBLEKEY 166 #define CNW_SCRAMBLEKEY 0 167 #endif 168 int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */ 169 170 /* 171 * The card appears to work much better when we only allow one packet 172 * "in the air" at a time. This is done by not allowing another packet 173 * on the card, even if there is room. Turning this off will allow the 174 * driver to stuff packets on the card as soon as a transmit buffer is 175 * available. This does increase the number of collisions, though. 176 * We can que a second packet if there are transmit buffers available, 177 * but we do not actually send the packet until the last packet has 178 * been written. 179 */ 180 #define ONE_AT_A_TIME 181 182 /* 183 * Netwave cards choke if we try to use io memory address >= 0x400. 184 * Even though, CIS tuple does not talk about this. 185 * Use memory mapped access. 186 */ 187 #define MEMORY_MAPPED 188 189 int cnw_match __P((struct device *, struct cfdata *, void *)); 190 void cnw_attach __P((struct device *, struct device *, void *)); 191 int cnw_detach __P((struct device *, int)); 192 193 int cnw_activate __P((struct device *, enum devact)); 194 195 struct cnw_softc { 196 struct device sc_dev; /* Device glue (must be first) */ 197 struct ethercom sc_ethercom; /* Ethernet common part */ 198 int sc_domain; /* Netwave domain */ 199 int sc_skey; /* Netwave scramble key */ 200 struct cnwstats sc_stats; 201 202 /* PCMCIA-specific stuff */ 203 struct pcmcia_function *sc_pf; /* PCMCIA function */ 204 #ifndef MEMORY_MAPPED 205 struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */ 206 int sc_iowin; /* ...window */ 207 bus_space_tag_t sc_iot; /* ...bus_space tag */ 208 bus_space_handle_t sc_ioh; /* ...bus_space handle */ 209 #endif 210 struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */ 211 bus_addr_t sc_memoff; /* ...offset */ 212 int sc_memwin; /* ...window */ 213 bus_space_tag_t sc_memt; /* ...bus_space tag */ 214 bus_space_handle_t sc_memh; /* ...bus_space handle */ 215 void *sc_ih; /* Interrupt cookie */ 216 struct timeval sc_txlast; /* When the last xmit was made */ 217 int sc_active; /* Currently xmitting a packet */ 218 219 int sc_resource; /* Resources alloc'ed on attach */ 220 #define CNW_RES_PCIC 1 221 #define CNW_RES_IO 2 222 #define CNW_RES_MEM 4 223 #define CNW_RES_NET 8 224 }; 225 226 struct cfattach cnw_ca = { 227 sizeof(struct cnw_softc), cnw_match, cnw_attach, cnw_detach, 228 cnw_activate 229 }; 230 231 232 void cnw_reset __P((struct cnw_softc *)); 233 void cnw_init __P((struct cnw_softc *)); 234 int cnw_enable __P((struct cnw_softc *sc)); 235 void cnw_disable __P((struct cnw_softc *sc)); 236 void cnw_config __P((struct cnw_softc *sc, u_int8_t *)); 237 void cnw_start __P((struct ifnet *)); 238 void cnw_transmit __P((struct cnw_softc *, struct mbuf *)); 239 struct mbuf *cnw_read __P((struct cnw_softc *)); 240 void cnw_recv __P((struct cnw_softc *)); 241 int cnw_intr __P((void *arg)); 242 int cnw_ioctl __P((struct ifnet *, u_long, caddr_t)); 243 void cnw_watchdog __P((struct ifnet *)); 244 static int cnw_setdomain __P((struct cnw_softc *, int)); 245 static int cnw_setkey __P((struct cnw_softc *, int)); 246 247 /* ---------------------------------------------------------------- */ 248 249 /* Help routines */ 250 static int wait_WOC __P((struct cnw_softc *, int)); 251 static int read16 __P((struct cnw_softc *, int)); 252 static int cnw_cmd __P((struct cnw_softc *, int, int, int, int)); 253 254 /* 255 * Wait until the WOC (Write Operation Complete) bit in the 256 * ASR (Adapter Status Register) is asserted. 257 */ 258 static int 259 wait_WOC(sc, line) 260 struct cnw_softc *sc; 261 int line; 262 { 263 int i, asr; 264 265 for (i = 0; i < 5000; i++) { 266 #ifndef MEMORY_MAPPED 267 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 268 #else 269 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 270 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 271 #endif 272 if (asr & CNW_ASR_WOC) 273 return (0); 274 DELAY(100); 275 } 276 if (line > 0) 277 printf("%s: wedged at line %d\n", sc->sc_dev.dv_xname, line); 278 return (1); 279 } 280 #define WAIT_WOC(sc) wait_WOC(sc, __LINE__) 281 282 283 /* 284 * Read a 16 bit value from the card. 285 */ 286 static int 287 read16(sc, offset) 288 struct cnw_softc *sc; 289 int offset; 290 { 291 int hi, lo; 292 int offs = sc->sc_memoff + offset; 293 294 /* This could presumably be done more efficient with 295 * bus_space_read_2(), but I don't know anything about the 296 * byte sex guarantees... Besides, this is pretty cheap as 297 * well :-) 298 */ 299 lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs); 300 hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1); 301 return ((hi << 8) | lo); 302 } 303 304 305 /* 306 * Send a command to the card by writing it to the command buffer. 307 */ 308 int 309 cnw_cmd(sc, cmd, count, arg1, arg2) 310 struct cnw_softc *sc; 311 int cmd, count, arg1, arg2; 312 { 313 int ptr = sc->sc_memoff + CNW_EREG_CB; 314 315 if (wait_WOC(sc, 0)) { 316 printf("%s: wedged when issuing cmd 0x%x\n", 317 sc->sc_dev.dv_xname, cmd); 318 /* 319 * We'll continue anyway, as that's probably the best 320 * thing we can do; at least the user knows there's a 321 * problem, and can reset the interface with ifconfig 322 * down/up. 323 */ 324 } 325 326 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd); 327 if (count > 0) { 328 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1); 329 if (count > 1) 330 bus_space_write_1(sc->sc_memt, sc->sc_memh, 331 ptr + 2, arg2); 332 } 333 bus_space_write_1(sc->sc_memt, sc->sc_memh, 334 ptr + count + 1, CNW_CMD_EOC); 335 return (0); 336 } 337 #define CNW_CMD0(sc, cmd) \ 338 do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0) 339 #define CNW_CMD1(sc, cmd, arg1) \ 340 do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0) 341 #define CNW_CMD2(sc, cmd, arg1, arg2) \ 342 do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0) 343 344 /* ---------------------------------------------------------------- */ 345 346 /* 347 * Reset the hardware. 348 */ 349 void 350 cnw_reset(sc) 351 struct cnw_softc *sc; 352 { 353 #ifdef CNW_DEBUG 354 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 355 printf("%s: resetting\n", sc->sc_dev.dv_xname); 356 #endif 357 wait_WOC(sc, 0); 358 #ifndef MEMORY_MAPPED 359 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET); 360 #else 361 bus_space_write_1(sc->sc_memt, sc->sc_memh, 362 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, CNW_PMR_RESET); 363 #endif 364 bus_space_write_1(sc->sc_memt, sc->sc_memh, 365 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC); 366 #ifndef MEMORY_MAPPED 367 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0); 368 #else 369 bus_space_write_1(sc->sc_memt, sc->sc_memh, 370 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, 0); 371 #endif 372 } 373 374 375 /* 376 * Initialize the card. 377 */ 378 void 379 cnw_init(sc) 380 struct cnw_softc *sc; 381 { 382 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 383 const u_int8_t rxmode = 384 CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP; 385 386 /* Reset the card */ 387 cnw_reset(sc); 388 389 /* Issue a NOP to check the card */ 390 CNW_CMD0(sc, CNW_CMD_NOP); 391 392 /* Set up receive configuration */ 393 CNW_CMD1(sc, CNW_CMD_SRC, 394 rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0)); 395 396 /* Set up transmit configuration */ 397 CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA); 398 399 /* Set domain */ 400 CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8); 401 402 /* Set scramble key */ 403 CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8); 404 405 /* Enable interrupts */ 406 WAIT_WOC(sc); 407 #ifndef MEMORY_MAPPED 408 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 409 CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); 410 #else 411 bus_space_write_1(sc->sc_memt, sc->sc_memh, 412 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_IMR, 413 CNW_IMR_IENA | CNW_IMR_RFU1); 414 #endif 415 416 /* Enable receiver */ 417 CNW_CMD0(sc, CNW_CMD_ER); 418 419 /* "Set the IENA bit in COR" */ 420 WAIT_WOC(sc); 421 #ifndef MEMORY_MAPPED 422 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR, 423 CNW_COR_IENA | CNW_COR_LVLREQ); 424 #else 425 bus_space_write_1(sc->sc_memt, sc->sc_memh, 426 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_COR, 427 CNW_COR_IENA | CNW_COR_LVLREQ); 428 #endif 429 } 430 431 432 /* 433 * Enable and initialize the card. 434 */ 435 int 436 cnw_enable(sc) 437 struct cnw_softc *sc; 438 { 439 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 440 441 if ((ifp->if_flags & IFF_RUNNING) != 0) 442 return (0); 443 444 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc); 445 if (sc->sc_ih == NULL) { 446 printf("%s: couldn't establish interrupt handler\n", 447 sc->sc_dev.dv_xname); 448 return (EIO); 449 } 450 if (pcmcia_function_enable(sc->sc_pf) != 0) { 451 printf("%s: couldn't enable card\n", sc->sc_dev.dv_xname); 452 return (EIO); 453 } 454 sc->sc_resource |= CNW_RES_PCIC; 455 cnw_init(sc); 456 ifp->if_flags &= ~IFF_OACTIVE; 457 ifp->if_flags |= IFF_RUNNING; 458 return (0); 459 } 460 461 462 /* 463 * Stop and disable the card. 464 */ 465 void 466 cnw_disable(sc) 467 struct cnw_softc *sc; 468 { 469 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 470 471 if ((ifp->if_flags & IFF_RUNNING) == 0) 472 return; 473 474 pcmcia_function_disable(sc->sc_pf); 475 sc->sc_resource &= ~CNW_RES_PCIC; 476 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 477 ifp->if_flags &= ~IFF_RUNNING; 478 ifp->if_timer = 0; 479 } 480 481 482 /* 483 * Match the hardware we handle. 484 */ 485 int 486 cnw_match(parent, match, aux) 487 struct device *parent; 488 struct cfdata *match; 489 void *aux; 490 { 491 struct pcmcia_attach_args *pa = aux; 492 493 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 494 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_801) 495 return 1; 496 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 497 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_802) 498 return 1; 499 return 0; 500 } 501 502 503 /* 504 * Attach the card. 505 */ 506 void 507 cnw_attach(parent, self, aux) 508 struct device *parent, *self; 509 void *aux; 510 { 511 struct cnw_softc *sc = (void *) self; 512 struct pcmcia_attach_args *pa = aux; 513 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 514 u_int8_t macaddr[ETHER_ADDR_LEN]; 515 int i; 516 bus_size_t memsize; 517 518 sc->sc_resource = 0; 519 520 /* Enable the card */ 521 sc->sc_pf = pa->pf; 522 pcmcia_function_init(sc->sc_pf, sc->sc_pf->cfe_head.sqh_first); 523 if (pcmcia_function_enable(sc->sc_pf)) { 524 printf(": function enable failed\n"); 525 return; 526 } 527 sc->sc_resource |= CNW_RES_PCIC; 528 529 /* Map I/O register and "memory" */ 530 #ifndef MEMORY_MAPPED 531 if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE, 532 &sc->sc_pcioh) != 0) { 533 printf(": can't allocate i/o space\n"); 534 goto fail; 535 } 536 if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, 0, 537 CNW_IO_SIZE, &sc->sc_pcioh, &sc->sc_iowin) != 0) { 538 printf(": can't map i/o space\n"); 539 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 540 goto fail; 541 } 542 sc->sc_iot = sc->sc_pcioh.iot; 543 sc->sc_ioh = sc->sc_pcioh.ioh; 544 sc->sc_resource |= CNW_RES_IO; 545 #endif 546 #ifndef MEMORY_MAPPED 547 memsize = CNW_MEM_SIZE; 548 #else 549 memsize = CNW_MEM_SIZE + CNW_IOM_SIZE; 550 #endif 551 if (pcmcia_mem_alloc(sc->sc_pf, memsize, &sc->sc_pcmemh) != 0) { 552 printf(": can't allocate memory\n"); 553 goto fail; 554 } 555 if (pcmcia_mem_map(sc->sc_pf, PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, 556 CNW_MEM_ADDR, memsize, &sc->sc_pcmemh, &sc->sc_memoff, 557 &sc->sc_memwin) != 0) { 558 printf(": can't map memory\n"); 559 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 560 goto fail; 561 } 562 sc->sc_memt = sc->sc_pcmemh.memt; 563 sc->sc_memh = sc->sc_pcmemh.memh; 564 sc->sc_resource |= CNW_RES_MEM; 565 switch (pa->product) { 566 case PCMCIA_PRODUCT_XIRCOM_CNW_801: 567 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_801); 568 break; 569 case PCMCIA_PRODUCT_XIRCOM_CNW_802: 570 printf(": %s\n", PCMCIA_STR_XIRCOM_CNW_802); 571 break; 572 } 573 574 /* Finish setup of softc */ 575 sc->sc_domain = cnw_domain; 576 sc->sc_skey = cnw_skey; 577 578 /* Get MAC address */ 579 cnw_reset(sc); 580 for (i = 0; i < ETHER_ADDR_LEN; i++) 581 macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, 582 sc->sc_memoff + CNW_EREG_PA + i); 583 printf("%s: address %s\n", sc->sc_dev.dv_xname, 584 ether_sprintf(macaddr)); 585 586 /* Set up ifnet structure */ 587 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 588 ifp->if_softc = sc; 589 ifp->if_start = cnw_start; 590 ifp->if_ioctl = cnw_ioctl; 591 ifp->if_watchdog = cnw_watchdog; 592 ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | 593 IFF_NOTRAILERS; 594 IFQ_SET_READY(&ifp->if_snd); 595 596 /* Attach the interface */ 597 if_attach(ifp); 598 ether_ifattach(ifp, macaddr); 599 600 sc->sc_resource |= CNW_RES_NET; 601 602 ifp->if_baudrate = IF_Mbps(1); 603 604 /* Disable the card now, and turn it on when the interface goes up */ 605 pcmcia_function_disable(sc->sc_pf); 606 sc->sc_resource &= ~CNW_RES_PCIC; 607 return; 608 609 fail: 610 #ifndef MEMORY_MAPPED 611 if ((sc->sc_resource & CNW_RES_IO) != 0) { 612 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 613 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 614 sc->sc_resource &= ~CNW_RES_IO; 615 } 616 #endif 617 if ((sc->sc_resource & CNW_RES_PCIC) != 0) { 618 pcmcia_function_disable(sc->sc_pf); 619 sc->sc_resource &= ~CNW_RES_PCIC; 620 } 621 } 622 623 /* 624 * Start outputting on the interface. 625 */ 626 void 627 cnw_start(ifp) 628 struct ifnet *ifp; 629 { 630 struct cnw_softc *sc = ifp->if_softc; 631 struct mbuf *m0; 632 int lif; 633 int asr; 634 #ifdef ONE_AT_A_TIME 635 struct timeval now; 636 #endif 637 638 #ifdef CNW_DEBUG 639 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 640 printf("%s: cnw_start\n", ifp->if_xname); 641 if (ifp->if_flags & IFF_OACTIVE) 642 printf("%s: cnw_start reentered\n", ifp->if_xname); 643 #endif 644 645 ifp->if_flags |= IFF_OACTIVE; 646 647 for (;;) { 648 #ifdef ONE_AT_A_TIME 649 microtime(&now); 650 now.tv_sec -= sc->sc_txlast.tv_sec; 651 now.tv_usec -= sc->sc_txlast.tv_usec; 652 if (now.tv_usec < 0) { 653 now.tv_usec += 1000000; 654 now.tv_sec--; 655 } 656 657 /* 658 * Don't ship this packet out until the last 659 * packet has left the building. 660 * If we have not tried to send a packet for 1/5 661 * a second then we assume we lost an interrupt, 662 * lets go on and send the next packet anyhow. 663 * 664 * I suppose we could check to see if it is okay 665 * to put additional packets on the card (beyond 666 * the one already waiting to be sent) but I don't 667 * think we would get any improvement in speed as 668 * we should have ample time to put the next packet 669 * on while this one is going out. 670 */ 671 if (sc->sc_active && now.tv_sec == 0 && now.tv_usec < 200000) 672 break; 673 #endif 674 675 /* Make sure the link integrity field is on */ 676 WAIT_WOC(sc); 677 lif = bus_space_read_1(sc->sc_memt, sc->sc_memh, 678 sc->sc_memoff + CNW_EREG_LIF); 679 if (lif == 0) { 680 #ifdef CNW_DEBUG 681 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 682 printf("%s: link integrity %d\n", lif); 683 #endif 684 break; 685 } 686 687 /* Is there any buffer space available on the card? */ 688 WAIT_WOC(sc); 689 #ifndef MEMORY_MAPPED 690 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 691 #else 692 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 693 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 694 #endif 695 if (!(asr & CNW_ASR_TXBA)) { 696 #ifdef CNW_DEBUG 697 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 698 printf("%s: no buffer space\n", ifp->if_xname); 699 #endif 700 break; 701 } 702 703 sc->sc_stats.nws_tx++; 704 705 IFQ_DEQUEUE(&ifp->if_snd, m0); 706 if (m0 == 0) 707 break; 708 709 #if NBPFILTER > 0 710 if (ifp->if_bpf) 711 bpf_mtap(ifp->if_bpf, m0); 712 #endif 713 714 cnw_transmit(sc, m0); 715 ++ifp->if_opackets; 716 ifp->if_timer = 3; /* start watchdog timer */ 717 718 microtime(&sc->sc_txlast); 719 sc->sc_active = 1; 720 } 721 722 ifp->if_flags &= ~IFF_OACTIVE; 723 } 724 725 /* 726 * Transmit a packet. 727 */ 728 void 729 cnw_transmit(sc, m0) 730 struct cnw_softc *sc; 731 struct mbuf *m0; 732 { 733 int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n; 734 struct mbuf *m; 735 u_int8_t *mptr; 736 737 /* Get buffer info from card */ 738 buffer = read16(sc, CNW_EREG_TDP); 739 bufsize = read16(sc, CNW_EREG_TDP + 2); 740 bufoffset = read16(sc, CNW_EREG_TDP + 4); 741 #ifdef CNW_DEBUG 742 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 743 printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n", 744 sc->sc_dev.dv_xname, buffer, bufsize, bufoffset); 745 #endif 746 747 /* Copy data from mbuf chain to card buffers */ 748 bufptr = sc->sc_memoff + buffer + bufoffset; 749 bufspace = bufsize; 750 len = 0; 751 for (m = m0; m; ) { 752 mptr = mtod(m, u_int8_t *); 753 mbytes = m->m_len; 754 len += mbytes; 755 while (mbytes > 0) { 756 if (bufspace == 0) { 757 buffer = read16(sc, buffer); 758 bufptr = sc->sc_memoff + buffer + bufoffset; 759 bufspace = bufsize; 760 #ifdef CNW_DEBUG 761 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 762 printf("%s: next buffer @0x%x\n", 763 sc->sc_dev.dv_xname, buffer); 764 #endif 765 } 766 n = mbytes <= bufspace ? mbytes : bufspace; 767 bus_space_write_region_1(sc->sc_memt, sc->sc_memh, 768 bufptr, mptr, n); 769 bufptr += n; 770 bufspace -= n; 771 mptr += n; 772 mbytes -= n; 773 } 774 MFREE(m, m0); 775 m = m0; 776 } 777 778 /* Issue transmit command */ 779 CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8); 780 } 781 782 783 /* 784 * Pull a packet from the card into an mbuf chain. 785 */ 786 struct mbuf * 787 cnw_read(sc) 788 struct cnw_softc *sc; 789 { 790 struct mbuf *m, *top, **mp; 791 int totbytes, buffer, bufbytes, bufptr, mbytes, n; 792 u_int8_t *mptr; 793 794 WAIT_WOC(sc); 795 totbytes = read16(sc, CNW_EREG_RDP); 796 #ifdef CNW_DEBUG 797 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 798 printf("%s: recv %d bytes\n", sc->sc_dev.dv_xname, totbytes); 799 #endif 800 buffer = CNW_EREG_RDP + 2; 801 bufbytes = 0; 802 bufptr = 0; /* XXX make gcc happy */ 803 804 MGETHDR(m, M_DONTWAIT, MT_DATA); 805 if (m == 0) 806 return (0); 807 m->m_pkthdr.rcvif = &sc->sc_ethercom.ec_if; 808 m->m_pkthdr.len = totbytes; 809 mbytes = MHLEN; 810 top = 0; 811 mp = ⊤ 812 813 while (totbytes > 0) { 814 if (top) { 815 MGET(m, M_DONTWAIT, MT_DATA); 816 if (m == 0) { 817 m_freem(top); 818 return (0); 819 } 820 mbytes = MLEN; 821 } 822 if (totbytes >= MINCLSIZE) { 823 MCLGET(m, M_DONTWAIT); 824 if ((m->m_flags & M_EXT) == 0) { 825 m_free(m); 826 m_freem(top); 827 return (0); 828 } 829 mbytes = MCLBYTES; 830 } 831 if (!top) { 832 int pad = ALIGN(sizeof(struct ether_header)) - 833 sizeof(struct ether_header); 834 m->m_data += pad; 835 mbytes -= pad; 836 } 837 mptr = mtod(m, u_int8_t *); 838 mbytes = m->m_len = min(totbytes, mbytes); 839 totbytes -= mbytes; 840 while (mbytes > 0) { 841 if (bufbytes == 0) { 842 buffer = read16(sc, buffer); 843 bufbytes = read16(sc, buffer + 2); 844 bufptr = sc->sc_memoff + buffer + 845 read16(sc, buffer + 4); 846 #ifdef CNW_DEBUG 847 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 848 printf("%s: %d bytes @0x%x+0x%x\n", 849 sc->sc_dev.dv_xname, bufbytes, 850 buffer, bufptr - buffer - 851 sc->sc_memoff); 852 #endif 853 } 854 n = mbytes <= bufbytes ? mbytes : bufbytes; 855 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 856 bufptr, mptr, n); 857 bufbytes -= n; 858 bufptr += n; 859 mbytes -= n; 860 mptr += n; 861 } 862 *mp = m; 863 mp = &m->m_next; 864 } 865 866 return (top); 867 } 868 869 870 /* 871 * Handle received packets. 872 */ 873 void 874 cnw_recv(sc) 875 struct cnw_softc *sc; 876 { 877 int rser; 878 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 879 struct mbuf *m; 880 881 for (;;) { 882 WAIT_WOC(sc); 883 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 884 sc->sc_memoff + CNW_EREG_RSER); 885 if (!(rser & CNW_RSER_RXAVAIL)) 886 return; 887 888 /* Pull packet off card */ 889 m = cnw_read(sc); 890 891 /* Acknowledge packet */ 892 CNW_CMD0(sc, CNW_CMD_SRP); 893 894 /* Did we manage to get the packet from the interface? */ 895 if (m == 0) { 896 ++ifp->if_ierrors; 897 return; 898 } 899 ++ifp->if_ipackets; 900 901 #if NBPFILTER > 0 902 if (ifp->if_bpf) 903 bpf_mtap(ifp->if_bpf, m); 904 #endif 905 906 /* Pass the packet up. */ 907 (*ifp->if_input)(ifp, m); 908 } 909 } 910 911 912 /* 913 * Interrupt handler. 914 */ 915 int 916 cnw_intr(arg) 917 void *arg; 918 { 919 struct cnw_softc *sc = arg; 920 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 921 int ret, status, rser, tser; 922 923 if ((sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) == 0 || 924 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 925 return (0); 926 ifp->if_timer = 0; /* stop watchdog timer */ 927 928 ret = 0; 929 for (;;) { 930 WAIT_WOC(sc); 931 #ifndef MEMORY_MAPPED 932 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 933 CNW_REG_CCSR); 934 #else 935 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 936 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_CCSR); 937 #endif 938 if (!(status & 0x02)) { 939 if (ret == 0) 940 printf("%s: spurious interrupt\n", 941 sc->sc_dev.dv_xname); 942 return (ret); 943 } 944 ret = 1; 945 #ifndef MEMORY_MAPPED 946 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 947 #else 948 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 949 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 950 #endif 951 952 /* Anything to receive? */ 953 if (status & CNW_ASR_RXRDY) { 954 sc->sc_stats.nws_rx++; 955 cnw_recv(sc); 956 } 957 958 /* Receive error */ 959 if (status & CNW_ASR_RXERR) { 960 /* 961 * I get a *lot* of spurious receive errors 962 * (many per second), even when the interface 963 * is quiescent, so we don't increment 964 * if_ierrors here. 965 */ 966 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 967 sc->sc_memoff + CNW_EREG_RSER); 968 969 /* RX statistics */ 970 sc->sc_stats.nws_rxerr++; 971 if (rser & CNW_RSER_RXBIG) 972 sc->sc_stats.nws_rxframe++; 973 if (rser & CNW_RSER_RXCRC) 974 sc->sc_stats.nws_rxcrcerror++; 975 if (rser & CNW_RSER_RXOVERRUN) 976 sc->sc_stats.nws_rxoverrun++; 977 if (rser & CNW_RSER_RXOVERFLOW) 978 sc->sc_stats.nws_rxoverflow++; 979 if (rser & CNW_RSER_RXERR) 980 sc->sc_stats.nws_rxerrors++; 981 if (rser & CNW_RSER_RXAVAIL) 982 sc->sc_stats.nws_rxavail++; 983 984 /* Clear error bits in RSER */ 985 WAIT_WOC(sc); 986 bus_space_write_1(sc->sc_memt, sc->sc_memh, 987 sc->sc_memoff + CNW_EREG_RSERW, 988 CNW_RSER_RXERR | 989 (rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG))); 990 /* Clear RXERR in ASR */ 991 WAIT_WOC(sc); 992 bus_space_write_1(sc->sc_memt, sc->sc_memh, 993 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR); 994 } 995 996 /* Transmit done */ 997 if (status & CNW_ASR_TXDN) { 998 tser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 999 CNW_EREG_TSER); 1000 1001 /* TX statistics */ 1002 if (tser & CNW_TSER_TXERR) 1003 sc->sc_stats.nws_txerrors++; 1004 if (tser & CNW_TSER_TXNOAP) 1005 sc->sc_stats.nws_txlostcd++; 1006 if (tser & CNW_TSER_TXGU) 1007 sc->sc_stats.nws_txabort++; 1008 1009 if (tser & CNW_TSER_TXOK) { 1010 sc->sc_stats.nws_txokay++; 1011 sc->sc_stats.nws_txretries[status & 0xf]++; 1012 WAIT_WOC(sc); 1013 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1014 sc->sc_memoff + CNW_EREG_TSERW, 1015 CNW_TSER_TXOK | CNW_TSER_RTRY); 1016 } 1017 1018 if (tser & CNW_TSER_ERROR) { 1019 ++ifp->if_oerrors; 1020 WAIT_WOC(sc); 1021 bus_space_write_1(sc->sc_memt, sc->sc_memh, 1022 sc->sc_memoff + CNW_EREG_TSERW, 1023 (tser & CNW_TSER_ERROR) | 1024 CNW_TSER_RTRY); 1025 } 1026 1027 sc->sc_active = 0; 1028 ifp->if_flags &= ~IFF_OACTIVE; 1029 1030 /* Continue to send packets from the queue */ 1031 cnw_start(&sc->sc_ethercom.ec_if); 1032 } 1033 1034 } 1035 } 1036 1037 1038 /* 1039 * Handle device ioctls. 1040 */ 1041 int 1042 cnw_ioctl(ifp, cmd, data) 1043 struct ifnet *ifp; 1044 u_long cmd; 1045 caddr_t data; 1046 { 1047 struct cnw_softc *sc = ifp->if_softc; 1048 struct ifaddr *ifa = (struct ifaddr *)data; 1049 struct ifreq *ifr = (struct ifreq *)data; 1050 int s, error = 0; 1051 struct proc *p = curproc->l_proc; /*XXX*/ 1052 1053 s = splnet(); 1054 1055 switch (cmd) { 1056 1057 case SIOCSIFADDR: 1058 if (!(ifp->if_flags & IFF_RUNNING) && 1059 (error = cnw_enable(sc)) != 0) 1060 break; 1061 ifp->if_flags |= IFF_UP; 1062 switch (ifa->ifa_addr->sa_family) { 1063 #ifdef INET 1064 case AF_INET: 1065 cnw_init(sc); 1066 arp_ifinit(&sc->sc_ethercom.ec_if, ifa); 1067 break; 1068 #endif 1069 default: 1070 cnw_init(sc); 1071 break; 1072 } 1073 break; 1074 1075 case SIOCSIFFLAGS: 1076 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_RUNNING) { 1077 /* 1078 * The interface is marked down and it is running, so 1079 * stop it. 1080 */ 1081 cnw_disable(sc); 1082 } else if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP){ 1083 /* 1084 * The interface is marked up and it is stopped, so 1085 * start it. 1086 */ 1087 error = cnw_enable(sc); 1088 } else { 1089 /* IFF_PROMISC may be changed */ 1090 cnw_init(sc); 1091 } 1092 break; 1093 1094 case SIOCADDMULTI: 1095 case SIOCDELMULTI: 1096 /* Update our multicast list. */ 1097 error = (cmd == SIOCADDMULTI) ? 1098 ether_addmulti(ifr, &sc->sc_ethercom) : 1099 ether_delmulti(ifr, &sc->sc_ethercom); 1100 if (error == ENETRESET || error == 0) { 1101 cnw_init(sc); 1102 error = 0; 1103 } 1104 break; 1105 1106 case SIOCGCNWDOMAIN: 1107 ((struct ifreq *)data)->ifr_domain = sc->sc_domain; 1108 break; 1109 1110 case SIOCSCNWDOMAIN: 1111 error = suser(p->p_ucred, &p->p_acflag); 1112 if (error) 1113 break; 1114 error = cnw_setdomain(sc, ifr->ifr_domain); 1115 break; 1116 1117 case SIOCSCNWKEY: 1118 error = suser(p->p_ucred, &p->p_acflag); 1119 if (error) 1120 break; 1121 error = cnw_setkey(sc, ifr->ifr_key); 1122 break; 1123 1124 case SIOCGCNWSTATUS: 1125 error = suser(p->p_ucred, &p->p_acflag); 1126 if (error) 1127 break; 1128 if ((ifp->if_flags & IFF_RUNNING) == 0) 1129 break; 1130 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 1131 sc->sc_memoff + CNW_EREG_CB, 1132 ((struct cnwstatus *)data)->data, 1133 sizeof(((struct cnwstatus *)data)->data)); 1134 break; 1135 1136 case SIOCGCNWSTATS: 1137 memcpy((void *)&(((struct cnwistats *)data)->stats), 1138 (void *)&sc->sc_stats, sizeof(struct cnwstats)); 1139 break; 1140 1141 default: 1142 error = EINVAL; 1143 break; 1144 } 1145 1146 splx(s); 1147 return (error); 1148 } 1149 1150 1151 /* 1152 * Device timeout/watchdog routine. Entered if the device neglects to 1153 * generate an interrupt after a transmit has been started on it. 1154 */ 1155 void 1156 cnw_watchdog(ifp) 1157 struct ifnet *ifp; 1158 { 1159 struct cnw_softc *sc = ifp->if_softc; 1160 1161 printf("%s: device timeout; card reset\n", sc->sc_dev.dv_xname); 1162 ++ifp->if_oerrors; 1163 cnw_init(sc); 1164 } 1165 1166 int 1167 cnw_setdomain(sc, domain) 1168 struct cnw_softc *sc; 1169 int domain; 1170 { 1171 int s; 1172 1173 if (domain & ~0x1ff) 1174 return EINVAL; 1175 1176 s = splnet(); 1177 CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8); 1178 splx(s); 1179 1180 sc->sc_domain = domain; 1181 return 0; 1182 } 1183 1184 int 1185 cnw_setkey(sc, key) 1186 struct cnw_softc *sc; 1187 int key; 1188 { 1189 int s; 1190 1191 if (key & ~0xffff) 1192 return EINVAL; 1193 1194 s = splnet(); 1195 CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8); 1196 splx(s); 1197 1198 sc->sc_skey = key; 1199 return 0; 1200 } 1201 1202 int 1203 cnw_activate(self, act) 1204 struct device *self; 1205 enum devact act; 1206 { 1207 struct cnw_softc *sc = (struct cnw_softc *)self; 1208 int rv = 0, s; 1209 1210 s = splnet(); 1211 switch (act) { 1212 case DVACT_ACTIVATE: 1213 rv = EOPNOTSUPP; 1214 break; 1215 1216 case DVACT_DEACTIVATE: 1217 if_deactivate(&sc->sc_ethercom.ec_if); 1218 break; 1219 } 1220 splx(s); 1221 return (rv); 1222 } 1223 1224 int 1225 cnw_detach(self, flags) 1226 struct device *self; 1227 int flags; 1228 { 1229 struct cnw_softc *sc = (struct cnw_softc *)self; 1230 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1231 1232 /* cnw_disable() checks IFF_RUNNING */ 1233 cnw_disable(sc); 1234 1235 if ((sc->sc_resource & CNW_RES_NET) != 0) { 1236 ether_ifdetach(ifp); 1237 if_detach(ifp); 1238 } 1239 1240 #ifndef MEMORY_MAPPED 1241 /* unmap and free our i/o windows */ 1242 if ((sc->sc_resource & CNW_RES_IO) != 0) { 1243 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 1244 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 1245 } 1246 #endif 1247 1248 /* unmap and free our memory windows */ 1249 if ((sc->sc_resource & CNW_RES_MEM) != 0) { 1250 pcmcia_mem_unmap(sc->sc_pf, sc->sc_memwin); 1251 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 1252 } 1253 1254 return (0); 1255 } 1256
Indexes created Tue Oct 28 12:10:06 GMT 2025