if_cnw.c revision 1.61.14.2
1 /* $NetBSD: if_cnw.c,v 1.61.14.2 2018/07/28 04:37:57 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2004 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1996, 1997 Berkeley Software Design, Inc. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that this notice is retained, 38 * the conditions in the following notices are met, and terms applying 39 * to contributors in the following notices also apply to Berkeley 40 * Software Design, Inc. 41 * 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by 50 * Berkeley Software Design, Inc. 51 * 4. Neither the name of the Berkeley Software Design, Inc. nor the names 52 * of its contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * Paul Borman, December 1996 68 * 69 * This driver is derived from a generic frame work which is 70 * Copyright(c) 1994,1995,1996 71 * Yoichi Shinoda, Yoshitaka Tokugawa, WIDE Project, Wildboar Project 72 * and Foretune. All rights reserved. 73 * 74 * A linux driver was used as the "hardware reference manual" (i.e., 75 * to determine registers and a general outline of how the card works) 76 * That driver is publically available and copyright 77 * 78 * John Markus Bjrndalen 79 * Department of Computer Science 80 * University of Troms 81 * Norway 82 * johnm (at) staff.cs.uit.no, http://www.cs.uit.no/~johnm/ 83 */ 84 85 /* 86 * This is a driver for the Xircom CreditCard Netwave (also known as 87 * the Netwave Airsurfer) wireless LAN PCMCIA adapter. 88 * 89 * When this driver was developed, the Linux Netwave driver was used 90 * as a hardware manual. That driver is Copyright (c) 1997 University 91 * of Troms, Norway. It is part of the Linux pcmcia-cs package that 92 * can be found at http://pcmcia-cs.sourceforge.net/. The most recent 93 * version of the pcmcia-cs package when this driver was written was 94 * 3.0.6. 95 * 96 * Unfortunately, a lot of explicit numeric constants were used in the 97 * Linux driver. I have tried to use symbolic names whenever possible, 98 * but since I don't have any real hardware documentation, there's 99 * still one or two "magic numbers" :-(. 100 * 101 * Driver limitations: This driver doesn't do multicasting or receiver 102 * promiscuity, because of missing hardware documentation. I couldn't 103 * get receiver promiscuity to work, and I haven't even tried 104 * multicast. Volunteers are welcome, of course :-). 105 */ 106 107 #include <sys/cdefs.h> 108 __KERNEL_RCSID(0, "$NetBSD: if_cnw.c,v 1.61.14.2 2018/07/28 04:37:57 pgoyette Exp $"); 109 110 #include "opt_inet.h" 111 112 #include <sys/param.h> 113 #include <sys/systm.h> 114 #include <sys/device.h> 115 #include <sys/socket.h> 116 #include <sys/mbuf.h> 117 #include <sys/ioctl.h> 118 #include <sys/proc.h> 119 #include <sys/kauth.h> 120 121 #include <net/if.h> 122 123 #include <dev/pcmcia/if_cnwreg.h> 124 #include <dev/pcmcia/if_cnwioctl.h> 125 126 #include <dev/pcmcia/pcmciareg.h> 127 #include <dev/pcmcia/pcmciavar.h> 128 #include <dev/pcmcia/pcmciadevs.h> 129 130 #include <net/if_dl.h> 131 #include <net/if_ether.h> 132 #include <net/bpf.h> 133 134 #ifdef INET 135 #include <netinet/in.h> 136 #include <netinet/in_systm.h> 137 #include <netinet/in_var.h> 138 #include <netinet/ip.h> 139 #include <netinet/if_inarp.h> 140 #endif 141 142 /* 143 * Let these be patchable variables, initialized from macros that can 144 * be set in the kernel config file. Someone with lots of spare time 145 * could probably write a nice Netwave configuration program to do 146 * this a little bit more elegantly :-). 147 */ 148 #ifndef CNW_DOMAIN 149 #define CNW_DOMAIN 0x100 150 #endif 151 int cnw_domain = CNW_DOMAIN; /* Domain */ 152 #ifndef CNW_SCRAMBLEKEY 153 #define CNW_SCRAMBLEKEY 0 154 #endif 155 int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */ 156 157 /* 158 * The card appears to work much better when we only allow one packet 159 * "in the air" at a time. This is done by not allowing another packet 160 * on the card, even if there is room. Turning this off will allow the 161 * driver to stuff packets on the card as soon as a transmit buffer is 162 * available. This does increase the number of collisions, though. 163 * We can que a second packet if there are transmit buffers available, 164 * but we do not actually send the packet until the last packet has 165 * been written. 166 */ 167 #define ONE_AT_A_TIME 168 169 /* 170 * Netwave cards choke if we try to use io memory address >= 0x400. 171 * Even though, CIS tuple does not talk about this. 172 * Use memory mapped access. 173 */ 174 #define MEMORY_MAPPED 175 176 int cnw_match(device_t, cfdata_t, void *); 177 void cnw_attach(device_t, device_t, void *); 178 int cnw_detach(device_t, int); 179 180 int cnw_activate(device_t, enum devact); 181 182 struct cnw_softc { 183 device_t sc_dev; /* Device glue (must be first) */ 184 struct ethercom sc_ethercom; /* Ethernet common part */ 185 int sc_domain; /* Netwave domain */ 186 int sc_skey; /* Netwave scramble key */ 187 struct cnwstats sc_stats; 188 189 /* PCMCIA-specific stuff */ 190 struct pcmcia_function *sc_pf; /* PCMCIA function */ 191 #ifndef MEMORY_MAPPED 192 struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */ 193 int sc_iowin; /* ...window */ 194 bus_space_tag_t sc_iot; /* ...bus_space tag */ 195 bus_space_handle_t sc_ioh; /* ...bus_space handle */ 196 #endif 197 struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */ 198 bus_size_t sc_memoff; /* ...offset */ 199 int sc_memwin; /* ...window */ 200 bus_space_tag_t sc_memt; /* ...bus_space tag */ 201 bus_space_handle_t sc_memh; /* ...bus_space handle */ 202 void *sc_ih; /* Interrupt cookie */ 203 struct timeval sc_txlast; /* When the last xmit was made */ 204 int sc_active; /* Currently xmitting a packet */ 205 206 int sc_resource; /* Resources alloc'ed on attach */ 207 #define CNW_RES_PCIC 1 208 #define CNW_RES_IO 2 209 #define CNW_RES_MEM 4 210 #define CNW_RES_NET 8 211 }; 212 213 CFATTACH_DECL_NEW(cnw, sizeof(struct cnw_softc), 214 cnw_match, cnw_attach, cnw_detach, cnw_activate); 215 216 void cnw_reset(struct cnw_softc *); 217 void cnw_init(struct cnw_softc *); 218 int cnw_enable(struct cnw_softc *sc); 219 void cnw_disable(struct cnw_softc *sc); 220 void cnw_config(struct cnw_softc *sc, u_int8_t *); 221 void cnw_start(struct ifnet *); 222 void cnw_transmit(struct cnw_softc *, struct mbuf *); 223 struct mbuf *cnw_read(struct cnw_softc *); 224 void cnw_recv(struct cnw_softc *); 225 int cnw_intr(void *arg); 226 int cnw_ioctl(struct ifnet *, u_long, void *); 227 void cnw_watchdog(struct ifnet *); 228 static int cnw_setdomain(struct cnw_softc *, int); 229 static int cnw_setkey(struct cnw_softc *, int); 230 231 /* ---------------------------------------------------------------- */ 232 233 /* Help routines */ 234 static int wait_WOC(struct cnw_softc *, int); 235 static int read16(struct cnw_softc *, int); 236 static int cnw_cmd(struct cnw_softc *, int, int, int, int); 237 238 /* 239 * Wait until the WOC (Write Operation Complete) bit in the 240 * ASR (Adapter Status Register) is asserted. 241 */ 242 static int 243 wait_WOC(struct cnw_softc *sc, int line) 244 { 245 int i, asr; 246 247 for (i = 0; i < 5000; i++) { 248 #ifndef MEMORY_MAPPED 249 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 250 #else 251 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 252 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 253 #endif 254 if (asr & CNW_ASR_WOC) 255 return (0); 256 DELAY(100); 257 } 258 if (line > 0) 259 printf("%s: wedged at line %d\n", device_xname(sc->sc_dev), line); 260 return (1); 261 } 262 #define WAIT_WOC(sc) wait_WOC(sc, __LINE__) 263 264 265 /* 266 * Read a 16 bit value from the card. 267 */ 268 static int 269 read16(struct cnw_softc *sc, int offset) 270 { 271 int hi, lo; 272 int offs = sc->sc_memoff + offset; 273 274 /* This could presumably be done more efficient with 275 * bus_space_read_2(), but I don't know anything about the 276 * byte sex guarantees... Besides, this is pretty cheap as 277 * well :-) 278 */ 279 lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs); 280 hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1); 281 return ((hi << 8) | lo); 282 } 283 284 285 /* 286 * Send a command to the card by writing it to the command buffer. 287 */ 288 int 289 cnw_cmd(struct cnw_softc *sc, int cmd, int count, int arg1, int arg2) 290 { 291 int ptr = sc->sc_memoff + CNW_EREG_CB; 292 293 if (wait_WOC(sc, 0)) { 294 printf("%s: wedged when issuing cmd 0x%x\n", 295 device_xname(sc->sc_dev), cmd); 296 /* 297 * We'll continue anyway, as that's probably the best 298 * thing we can do; at least the user knows there's a 299 * problem, and can reset the interface with ifconfig 300 * down/up. 301 */ 302 } 303 304 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd); 305 if (count > 0) { 306 bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1); 307 if (count > 1) 308 bus_space_write_1(sc->sc_memt, sc->sc_memh, 309 ptr + 2, arg2); 310 } 311 bus_space_write_1(sc->sc_memt, sc->sc_memh, 312 ptr + count + 1, CNW_CMD_EOC); 313 return (0); 314 } 315 #define CNW_CMD0(sc, cmd) \ 316 do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0) 317 #define CNW_CMD1(sc, cmd, arg1) \ 318 do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0) 319 #define CNW_CMD2(sc, cmd, arg1, arg2) \ 320 do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0) 321 322 /* ---------------------------------------------------------------- */ 323 324 /* 325 * Reset the hardware. 326 */ 327 void 328 cnw_reset(struct cnw_softc *sc) 329 { 330 #ifdef CNW_DEBUG 331 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 332 printf("%s: resetting\n", device_xname(sc->sc_dev)); 333 #endif 334 wait_WOC(sc, 0); 335 #ifndef MEMORY_MAPPED 336 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET); 337 #else 338 bus_space_write_1(sc->sc_memt, sc->sc_memh, 339 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, CNW_PMR_RESET); 340 #endif 341 bus_space_write_1(sc->sc_memt, sc->sc_memh, 342 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC); 343 #ifndef MEMORY_MAPPED 344 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0); 345 #else 346 bus_space_write_1(sc->sc_memt, sc->sc_memh, 347 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, 0); 348 #endif 349 } 350 351 352 /* 353 * Initialize the card. 354 */ 355 void 356 cnw_init(struct cnw_softc *sc) 357 { 358 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 359 const u_int8_t rxmode = 360 CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP; 361 362 /* Reset the card */ 363 cnw_reset(sc); 364 365 /* Issue a NOP to check the card */ 366 CNW_CMD0(sc, CNW_CMD_NOP); 367 368 /* Set up receive configuration */ 369 CNW_CMD1(sc, CNW_CMD_SRC, 370 rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0)); 371 372 /* Set up transmit configuration */ 373 CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA); 374 375 /* Set domain */ 376 CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8); 377 378 /* Set scramble key */ 379 CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8); 380 381 /* Enable interrupts */ 382 WAIT_WOC(sc); 383 #ifndef MEMORY_MAPPED 384 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 385 CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); 386 #else 387 bus_space_write_1(sc->sc_memt, sc->sc_memh, 388 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_IMR, 389 CNW_IMR_IENA | CNW_IMR_RFU1); 390 #endif 391 392 /* Enable receiver */ 393 CNW_CMD0(sc, CNW_CMD_ER); 394 395 /* "Set the IENA bit in COR" */ 396 WAIT_WOC(sc); 397 #ifndef MEMORY_MAPPED 398 bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR, 399 CNW_COR_IENA | CNW_COR_LVLREQ); 400 #else 401 bus_space_write_1(sc->sc_memt, sc->sc_memh, 402 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_COR, 403 CNW_COR_IENA | CNW_COR_LVLREQ); 404 #endif 405 } 406 407 408 /* 409 * Enable and initialize the card. 410 */ 411 int 412 cnw_enable(struct cnw_softc *sc) 413 { 414 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 415 416 if ((ifp->if_flags & IFF_RUNNING) != 0) 417 return (0); 418 419 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc); 420 if (sc->sc_ih == NULL) { 421 aprint_error_dev(sc->sc_dev, "couldn't establish interrupt handler\n"); 422 return (EIO); 423 } 424 if (pcmcia_function_enable(sc->sc_pf) != 0) { 425 aprint_error_dev(sc->sc_dev, "couldn't enable card\n"); 426 return (EIO); 427 } 428 sc->sc_resource |= CNW_RES_PCIC; 429 cnw_init(sc); 430 ifp->if_flags &= ~IFF_OACTIVE; 431 ifp->if_flags |= IFF_RUNNING; 432 return (0); 433 } 434 435 436 /* 437 * Stop and disable the card. 438 */ 439 void 440 cnw_disable(struct cnw_softc *sc) 441 { 442 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 443 444 if ((ifp->if_flags & IFF_RUNNING) == 0) 445 return; 446 447 pcmcia_function_disable(sc->sc_pf); 448 sc->sc_resource &= ~CNW_RES_PCIC; 449 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 450 ifp->if_flags &= ~IFF_RUNNING; 451 ifp->if_timer = 0; 452 } 453 454 455 /* 456 * Match the hardware we handle. 457 */ 458 int 459 cnw_match(device_t parent, cfdata_t match, void *aux) 460 { 461 struct pcmcia_attach_args *pa = aux; 462 463 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 464 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_801) 465 return 1; 466 if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && 467 pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_802) 468 return 1; 469 return 0; 470 } 471 472 473 /* 474 * Attach the card. 475 */ 476 void 477 cnw_attach(device_t parent, device_t self, void *aux) 478 { 479 struct cnw_softc *sc = device_private(self); 480 struct pcmcia_attach_args *pa = aux; 481 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 482 u_int8_t macaddr[ETHER_ADDR_LEN]; 483 int i; 484 bus_size_t memsize; 485 486 sc->sc_dev = self; 487 sc->sc_resource = 0; 488 489 /* Enable the card */ 490 sc->sc_pf = pa->pf; 491 pcmcia_function_init(sc->sc_pf, SIMPLEQ_FIRST(&sc->sc_pf->cfe_head)); 492 if (pcmcia_function_enable(sc->sc_pf)) { 493 aprint_error_dev(self, "function enable failed\n"); 494 return; 495 } 496 sc->sc_resource |= CNW_RES_PCIC; 497 498 /* Map I/O register and "memory" */ 499 #ifndef MEMORY_MAPPED 500 if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE, 501 &sc->sc_pcioh) != 0) { 502 aprint_error_dev(self, "can't allocate i/o space\n"); 503 goto fail; 504 } 505 if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, &sc->sc_pcioh, 506 &sc->sc_iowin) != 0) { 507 aprint_error_dev(self, "can't map i/o space\n"); 508 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 509 goto fail; 510 } 511 sc->sc_iot = sc->sc_pcioh.iot; 512 sc->sc_ioh = sc->sc_pcioh.ioh; 513 sc->sc_resource |= CNW_RES_IO; 514 #endif 515 #ifndef MEMORY_MAPPED 516 memsize = CNW_MEM_SIZE; 517 #else 518 memsize = CNW_MEM_SIZE + CNW_IOM_SIZE; 519 #endif 520 if (pcmcia_mem_alloc(sc->sc_pf, memsize, &sc->sc_pcmemh) != 0) { 521 aprint_error_dev(self, "can't allocate memory\n"); 522 goto fail; 523 } 524 if (pcmcia_mem_map(sc->sc_pf, PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, 525 CNW_MEM_ADDR, memsize, &sc->sc_pcmemh, &sc->sc_memoff, 526 &sc->sc_memwin) != 0) { 527 aprint_error_dev(self, "can't map memory\n"); 528 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 529 goto fail; 530 } 531 sc->sc_memt = sc->sc_pcmemh.memt; 532 sc->sc_memh = sc->sc_pcmemh.memh; 533 sc->sc_resource |= CNW_RES_MEM; 534 535 /* Finish setup of softc */ 536 sc->sc_domain = cnw_domain; 537 sc->sc_skey = cnw_skey; 538 539 /* Get MAC address */ 540 cnw_reset(sc); 541 for (i = 0; i < ETHER_ADDR_LEN; i++) 542 macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, 543 sc->sc_memoff + CNW_EREG_PA + i); 544 printf("%s: address %s\n", device_xname(sc->sc_dev), 545 ether_sprintf(macaddr)); 546 547 /* Set up ifnet structure */ 548 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 549 ifp->if_softc = sc; 550 ifp->if_start = cnw_start; 551 ifp->if_ioctl = cnw_ioctl; 552 ifp->if_watchdog = cnw_watchdog; 553 ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | 554 IFF_NOTRAILERS; 555 IFQ_SET_READY(&ifp->if_snd); 556 557 /* Attach the interface */ 558 if_attach(ifp); 559 if_deferred_start_init(ifp, NULL); 560 ether_ifattach(ifp, macaddr); 561 562 sc->sc_resource |= CNW_RES_NET; 563 564 ifp->if_baudrate = IF_Mbps(1); 565 566 /* Disable the card now, and turn it on when the interface goes up */ 567 pcmcia_function_disable(sc->sc_pf); 568 sc->sc_resource &= ~CNW_RES_PCIC; 569 return; 570 571 fail: 572 #ifndef MEMORY_MAPPED 573 if ((sc->sc_resource & CNW_RES_IO) != 0) { 574 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 575 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 576 sc->sc_resource &= ~CNW_RES_IO; 577 } 578 #endif 579 if ((sc->sc_resource & CNW_RES_PCIC) != 0) { 580 pcmcia_function_disable(sc->sc_pf); 581 sc->sc_resource &= ~CNW_RES_PCIC; 582 } 583 } 584 585 /* 586 * Start outputting on the interface. 587 */ 588 void 589 cnw_start(struct ifnet *ifp) 590 { 591 struct cnw_softc *sc = ifp->if_softc; 592 struct mbuf *m0; 593 int lif; 594 int asr; 595 #ifdef ONE_AT_A_TIME 596 struct timeval now; 597 #endif 598 599 #ifdef CNW_DEBUG 600 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 601 printf("%s: cnw_start\n", ifp->if_xname); 602 if (ifp->if_flags & IFF_OACTIVE) 603 printf("%s: cnw_start reentered\n", ifp->if_xname); 604 #endif 605 606 ifp->if_flags |= IFF_OACTIVE; 607 608 for (;;) { 609 #ifdef ONE_AT_A_TIME 610 microtime(&now); 611 now.tv_sec -= sc->sc_txlast.tv_sec; 612 now.tv_usec -= sc->sc_txlast.tv_usec; 613 if (now.tv_usec < 0) { 614 now.tv_usec += 1000000; 615 now.tv_sec--; 616 } 617 618 /* 619 * Don't ship this packet out until the last 620 * packet has left the building. 621 * If we have not tried to send a packet for 1/5 622 * a second then we assume we lost an interrupt, 623 * lets go on and send the next packet anyhow. 624 * 625 * I suppose we could check to see if it is okay 626 * to put additional packets on the card (beyond 627 * the one already waiting to be sent) but I don't 628 * think we would get any improvement in speed as 629 * we should have ample time to put the next packet 630 * on while this one is going out. 631 */ 632 if (sc->sc_active && now.tv_sec == 0 && now.tv_usec < 200000) 633 break; 634 #endif 635 636 /* Make sure the link integrity field is on */ 637 WAIT_WOC(sc); 638 lif = bus_space_read_1(sc->sc_memt, sc->sc_memh, 639 sc->sc_memoff + CNW_EREG_LIF); 640 if (lif == 0) { 641 #ifdef CNW_DEBUG 642 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 643 printf("%s: link integrity %d\n", ifp->if_xname, lif); 644 #endif 645 break; 646 } 647 648 /* Is there any buffer space available on the card? */ 649 WAIT_WOC(sc); 650 #ifndef MEMORY_MAPPED 651 asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 652 #else 653 asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, 654 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 655 #endif 656 if (!(asr & CNW_ASR_TXBA)) { 657 #ifdef CNW_DEBUG 658 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 659 printf("%s: no buffer space\n", ifp->if_xname); 660 #endif 661 break; 662 } 663 664 sc->sc_stats.nws_tx++; 665 666 IFQ_DEQUEUE(&ifp->if_snd, m0); 667 if (m0 == 0) 668 break; 669 670 bpf_mtap(ifp, m0, BPF_D_OUT); 671 672 cnw_transmit(sc, m0); 673 ++ifp->if_opackets; 674 ifp->if_timer = 3; /* start watchdog timer */ 675 676 microtime(&sc->sc_txlast); 677 sc->sc_active = 1; 678 } 679 680 ifp->if_flags &= ~IFF_OACTIVE; 681 } 682 683 /* 684 * Transmit a packet. 685 */ 686 void 687 cnw_transmit(struct cnw_softc *sc, struct mbuf *m0) 688 { 689 int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n; 690 struct mbuf *m; 691 u_int8_t *mptr; 692 693 /* Get buffer info from card */ 694 buffer = read16(sc, CNW_EREG_TDP); 695 bufsize = read16(sc, CNW_EREG_TDP + 2); 696 bufoffset = read16(sc, CNW_EREG_TDP + 4); 697 #ifdef CNW_DEBUG 698 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 699 printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n", 700 device_xname(sc->sc_dev), buffer, bufsize, bufoffset); 701 #endif 702 703 /* Copy data from mbuf chain to card buffers */ 704 bufptr = sc->sc_memoff + buffer + bufoffset; 705 bufspace = bufsize; 706 len = 0; 707 for (m = m0; m; ) { 708 mptr = mtod(m, u_int8_t *); 709 mbytes = m->m_len; 710 len += mbytes; 711 while (mbytes > 0) { 712 if (bufspace == 0) { 713 buffer = read16(sc, buffer); 714 bufptr = sc->sc_memoff + buffer + bufoffset; 715 bufspace = bufsize; 716 #ifdef CNW_DEBUG 717 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 718 printf("%s: next buffer @0x%x\n", 719 device_xname(sc->sc_dev), buffer); 720 #endif 721 } 722 n = mbytes <= bufspace ? mbytes : bufspace; 723 bus_space_write_region_1(sc->sc_memt, sc->sc_memh, 724 bufptr, mptr, n); 725 bufptr += n; 726 bufspace -= n; 727 mptr += n; 728 mbytes -= n; 729 } 730 m = m0 = m_free(m); 731 } 732 733 /* Issue transmit command */ 734 CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8); 735 } 736 737 738 /* 739 * Pull a packet from the card into an mbuf chain. 740 */ 741 struct mbuf * 742 cnw_read(struct cnw_softc *sc) 743 { 744 struct mbuf *m, *top, **mp; 745 int totbytes, buffer, bufbytes, bufptr, mbytes, n; 746 u_int8_t *mptr; 747 748 WAIT_WOC(sc); 749 totbytes = read16(sc, CNW_EREG_RDP); 750 #ifdef CNW_DEBUG 751 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 752 printf("%s: recv %d bytes\n", device_xname(sc->sc_dev), totbytes); 753 #endif 754 buffer = CNW_EREG_RDP + 2; 755 bufbytes = 0; 756 bufptr = 0; /* XXX make gcc happy */ 757 758 MGETHDR(m, M_DONTWAIT, MT_DATA); 759 if (m == 0) 760 return (0); 761 m_set_rcvif(m, &sc->sc_ethercom.ec_if); 762 m->m_pkthdr.len = totbytes; 763 mbytes = MHLEN; 764 top = 0; 765 mp = ⊤ 766 767 while (totbytes > 0) { 768 if (top) { 769 MGET(m, M_DONTWAIT, MT_DATA); 770 if (m == 0) { 771 m_freem(top); 772 return (0); 773 } 774 mbytes = MLEN; 775 } 776 if (totbytes >= MINCLSIZE) { 777 MCLGET(m, M_DONTWAIT); 778 if ((m->m_flags & M_EXT) == 0) { 779 m_free(m); 780 m_freem(top); 781 return (0); 782 } 783 mbytes = MCLBYTES; 784 } 785 if (!top) { 786 int pad = ALIGN(sizeof(struct ether_header)) - 787 sizeof(struct ether_header); 788 m->m_data += pad; 789 mbytes -= pad; 790 } 791 mptr = mtod(m, u_int8_t *); 792 mbytes = m->m_len = min(totbytes, mbytes); 793 totbytes -= mbytes; 794 while (mbytes > 0) { 795 if (bufbytes == 0) { 796 buffer = read16(sc, buffer); 797 bufbytes = read16(sc, buffer + 2); 798 bufptr = sc->sc_memoff + buffer + 799 read16(sc, buffer + 4); 800 #ifdef CNW_DEBUG 801 if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) 802 printf("%s: %d bytes @0x%x+0x%lx\n", 803 device_xname(sc->sc_dev), bufbytes, 804 buffer, (u_long)(bufptr - buffer - 805 sc->sc_memoff)); 806 #endif 807 } 808 n = mbytes <= bufbytes ? mbytes : bufbytes; 809 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 810 bufptr, mptr, n); 811 bufbytes -= n; 812 bufptr += n; 813 mbytes -= n; 814 mptr += n; 815 } 816 *mp = m; 817 mp = &m->m_next; 818 } 819 820 return (top); 821 } 822 823 824 /* 825 * Handle received packets. 826 */ 827 void 828 cnw_recv(struct cnw_softc *sc) 829 { 830 int rser; 831 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 832 struct mbuf *m; 833 834 for (;;) { 835 WAIT_WOC(sc); 836 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 837 sc->sc_memoff + CNW_EREG_RSER); 838 if (!(rser & CNW_RSER_RXAVAIL)) 839 return; 840 841 /* Pull packet off card */ 842 m = cnw_read(sc); 843 844 /* Acknowledge packet */ 845 CNW_CMD0(sc, CNW_CMD_SRP); 846 847 /* Did we manage to get the packet from the interface? */ 848 if (m == 0) { 849 ++ifp->if_ierrors; 850 return; 851 } 852 ++ifp->if_ipackets; 853 854 /* Pass the packet up. */ 855 if_percpuq_enqueue(ifp->if_percpuq, m); 856 } 857 } 858 859 860 /* 861 * Interrupt handler. 862 */ 863 int 864 cnw_intr(void *arg) 865 { 866 struct cnw_softc *sc = arg; 867 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 868 int ret, status, rser, tser; 869 870 if ((sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) == 0 || 871 !device_is_active(sc->sc_dev)) 872 return (0); 873 ifp->if_timer = 0; /* stop watchdog timer */ 874 875 ret = 0; 876 for (;;) { 877 WAIT_WOC(sc); 878 #ifndef MEMORY_MAPPED 879 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 880 CNW_REG_CCSR); 881 #else 882 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 883 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_CCSR); 884 #endif 885 if (!(status & 0x02)) 886 /* No more commands, or shared IRQ */ 887 return (ret); 888 ret = 1; 889 #ifndef MEMORY_MAPPED 890 status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); 891 #else 892 status = bus_space_read_1(sc->sc_memt, sc->sc_memh, 893 sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); 894 #endif 895 896 /* Anything to receive? */ 897 if (status & CNW_ASR_RXRDY) { 898 sc->sc_stats.nws_rx++; 899 cnw_recv(sc); 900 } 901 902 /* Receive error */ 903 if (status & CNW_ASR_RXERR) { 904 /* 905 * I get a *lot* of spurious receive errors 906 * (many per second), even when the interface 907 * is quiescent, so we don't increment 908 * if_ierrors here. 909 */ 910 rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 911 sc->sc_memoff + CNW_EREG_RSER); 912 913 /* RX statistics */ 914 sc->sc_stats.nws_rxerr++; 915 if (rser & CNW_RSER_RXBIG) 916 sc->sc_stats.nws_rxframe++; 917 if (rser & CNW_RSER_RXCRC) 918 sc->sc_stats.nws_rxcrcerror++; 919 if (rser & CNW_RSER_RXOVERRUN) 920 sc->sc_stats.nws_rxoverrun++; 921 if (rser & CNW_RSER_RXOVERFLOW) 922 sc->sc_stats.nws_rxoverflow++; 923 if (rser & CNW_RSER_RXERR) 924 sc->sc_stats.nws_rxerrors++; 925 if (rser & CNW_RSER_RXAVAIL) 926 sc->sc_stats.nws_rxavail++; 927 928 /* Clear error bits in RSER */ 929 WAIT_WOC(sc); 930 bus_space_write_1(sc->sc_memt, sc->sc_memh, 931 sc->sc_memoff + CNW_EREG_RSERW, 932 CNW_RSER_RXERR | 933 (rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG))); 934 /* Clear RXERR in ASR */ 935 WAIT_WOC(sc); 936 bus_space_write_1(sc->sc_memt, sc->sc_memh, 937 sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR); 938 } 939 940 /* Transmit done */ 941 if (status & CNW_ASR_TXDN) { 942 tser = bus_space_read_1(sc->sc_memt, sc->sc_memh, 943 CNW_EREG_TSER); 944 945 /* TX statistics */ 946 if (tser & CNW_TSER_TXERR) 947 sc->sc_stats.nws_txerrors++; 948 if (tser & CNW_TSER_TXNOAP) 949 sc->sc_stats.nws_txlostcd++; 950 if (tser & CNW_TSER_TXGU) 951 sc->sc_stats.nws_txabort++; 952 953 if (tser & CNW_TSER_TXOK) { 954 sc->sc_stats.nws_txokay++; 955 sc->sc_stats.nws_txretries[status & 0xf]++; 956 WAIT_WOC(sc); 957 bus_space_write_1(sc->sc_memt, sc->sc_memh, 958 sc->sc_memoff + CNW_EREG_TSERW, 959 CNW_TSER_TXOK | CNW_TSER_RTRY); 960 } 961 962 if (tser & CNW_TSER_ERROR) { 963 ++ifp->if_oerrors; 964 WAIT_WOC(sc); 965 bus_space_write_1(sc->sc_memt, sc->sc_memh, 966 sc->sc_memoff + CNW_EREG_TSERW, 967 (tser & CNW_TSER_ERROR) | 968 CNW_TSER_RTRY); 969 } 970 971 sc->sc_active = 0; 972 ifp->if_flags &= ~IFF_OACTIVE; 973 974 /* Continue to send packets from the queue */ 975 if_schedule_deferred_start(&sc->sc_ethercom.ec_if); 976 } 977 978 } 979 } 980 981 982 /* 983 * Handle device ioctls. 984 */ 985 int 986 cnw_ioctl(struct ifnet *ifp, u_long cmd, void *data) 987 { 988 struct cnw_softc *sc = ifp->if_softc; 989 struct ifaddr *ifa = (struct ifaddr *)data; 990 struct ifreq *ifr = (struct ifreq *)data; 991 int s, error = 0; 992 struct lwp *l = curlwp; /*XXX*/ 993 994 switch (cmd) { 995 case SIOCINITIFADDR: 996 case SIOCSIFFLAGS: 997 case SIOCADDMULTI: 998 case SIOCDELMULTI: 999 case SIOCGCNWDOMAIN: 1000 case SIOCGCNWSTATS: 1001 break; 1002 case SIOCSCNWDOMAIN: 1003 case SIOCSCNWKEY: 1004 error = kauth_authorize_network(l->l_cred, 1005 KAUTH_NETWORK_INTERFACE, 1006 KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp, KAUTH_ARG(cmd), 1007 NULL); 1008 if (error) 1009 return (error); 1010 break; 1011 case SIOCGCNWSTATUS: 1012 error = kauth_authorize_network(l->l_cred, 1013 KAUTH_NETWORK_INTERFACE, 1014 KAUTH_REQ_NETWORK_INTERFACE_GETPRIV, ifp, KAUTH_ARG(cmd), 1015 NULL); 1016 if (error) 1017 return (error); 1018 break; 1019 default: 1020 return (EINVAL); 1021 } 1022 1023 s = splnet(); 1024 1025 switch (cmd) { 1026 1027 case SIOCINITIFADDR: 1028 if (!(ifp->if_flags & IFF_RUNNING) && 1029 (error = cnw_enable(sc)) != 0) 1030 break; 1031 ifp->if_flags |= IFF_UP; 1032 cnw_init(sc); 1033 switch (ifa->ifa_addr->sa_family) { 1034 #ifdef INET 1035 case AF_INET: 1036 arp_ifinit(&sc->sc_ethercom.ec_if, ifa); 1037 break; 1038 #endif 1039 default: 1040 break; 1041 } 1042 break; 1043 1044 case SIOCSIFFLAGS: 1045 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1046 break; 1047 /* XXX re-use ether_ioctl() */ 1048 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 1049 case IFF_RUNNING: 1050 /* 1051 * The interface is marked down and it is running, so 1052 * stop it. 1053 */ 1054 cnw_disable(sc); 1055 break; 1056 case IFF_UP: 1057 /* 1058 * The interface is marked up and it is stopped, so 1059 * start it. 1060 */ 1061 error = cnw_enable(sc); 1062 break; 1063 default: 1064 /* IFF_PROMISC may be changed */ 1065 cnw_init(sc); 1066 break; 1067 } 1068 break; 1069 1070 case SIOCADDMULTI: 1071 case SIOCDELMULTI: 1072 /* Update our multicast list. */ 1073 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1074 if (ifp->if_flags & IFF_RUNNING) 1075 cnw_init(sc); 1076 error = 0; 1077 } 1078 break; 1079 1080 case SIOCGCNWDOMAIN: 1081 ifr->ifr_domain = sc->sc_domain; 1082 break; 1083 1084 case SIOCSCNWDOMAIN: 1085 error = cnw_setdomain(sc, ifr->ifr_domain); 1086 break; 1087 1088 case SIOCSCNWKEY: 1089 error = cnw_setkey(sc, ifr->ifr_key); 1090 break; 1091 1092 case SIOCGCNWSTATUS: 1093 if ((ifp->if_flags & IFF_RUNNING) == 0) 1094 break; 1095 bus_space_read_region_1(sc->sc_memt, sc->sc_memh, 1096 sc->sc_memoff + CNW_EREG_CB, 1097 ((struct cnwstatus *)data)->data, 1098 sizeof(((struct cnwstatus *)data)->data)); 1099 break; 1100 1101 case SIOCGCNWSTATS: 1102 memcpy((void *)&(((struct cnwistats *)data)->stats), 1103 (void *)&sc->sc_stats, sizeof(struct cnwstats)); 1104 break; 1105 1106 default: 1107 error = ether_ioctl(ifp, cmd, data); 1108 break; 1109 } 1110 1111 splx(s); 1112 return (error); 1113 } 1114 1115 1116 /* 1117 * Device timeout/watchdog routine. Entered if the device neglects to 1118 * generate an interrupt after a transmit has been started on it. 1119 */ 1120 void 1121 cnw_watchdog(struct ifnet *ifp) 1122 { 1123 struct cnw_softc *sc = ifp->if_softc; 1124 1125 printf("%s: device timeout; card reset\n", device_xname(sc->sc_dev)); 1126 ++ifp->if_oerrors; 1127 cnw_init(sc); 1128 } 1129 1130 int 1131 cnw_setdomain(struct cnw_softc *sc, int domain) 1132 { 1133 int s; 1134 1135 if (domain & ~0x1ff) 1136 return EINVAL; 1137 1138 s = splnet(); 1139 CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8); 1140 splx(s); 1141 1142 sc->sc_domain = domain; 1143 return 0; 1144 } 1145 1146 int 1147 cnw_setkey(struct cnw_softc *sc, int key) 1148 { 1149 int s; 1150 1151 if (key & ~0xffff) 1152 return EINVAL; 1153 1154 s = splnet(); 1155 CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8); 1156 splx(s); 1157 1158 sc->sc_skey = key; 1159 return 0; 1160 } 1161 1162 int 1163 cnw_activate(device_t self, enum devact act) 1164 { 1165 struct cnw_softc *sc = device_private(self); 1166 1167 switch (act) { 1168 case DVACT_DEACTIVATE: 1169 if_deactivate(&sc->sc_ethercom.ec_if); 1170 return 0; 1171 default: 1172 return EOPNOTSUPP; 1173 } 1174 } 1175 1176 int 1177 cnw_detach(device_t self, int flags) 1178 { 1179 struct cnw_softc *sc = device_private(self); 1180 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1181 1182 /* cnw_disable() checks IFF_RUNNING */ 1183 cnw_disable(sc); 1184 1185 if ((sc->sc_resource & CNW_RES_NET) != 0) { 1186 ether_ifdetach(ifp); 1187 if_detach(ifp); 1188 } 1189 1190 #ifndef MEMORY_MAPPED 1191 /* unmap and free our i/o windows */ 1192 if ((sc->sc_resource & CNW_RES_IO) != 0) { 1193 pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); 1194 pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); 1195 } 1196 #endif 1197 1198 /* unmap and free our memory windows */ 1199 if ((sc->sc_resource & CNW_RES_MEM) != 0) { 1200 pcmcia_mem_unmap(sc->sc_pf, sc->sc_memwin); 1201 pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); 1202 } 1203 1204 return (0); 1205 } 1206
Indexes created Tue Oct 28 12:10:06 GMT 2025