| 1 | /* |
| 2 | * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by Herb Peyerl. |
| 16 | * 4. The name of Herb Peyerl may not be used to endorse or promote products |
| 17 | * derived from this software without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | * |
| 30 | * if_ep.c,v 1.19 1995/01/24 20:53:45 davidg Exp |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * Modified from the FreeBSD 1.1.5.1 version by: |
| 35 | * Andres Vega Garcia |
| 36 | * INRIA - Sophia Antipolis, France |
| 37 | * avega@sophia.inria.fr |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | * $FreeBSD: src/sys/dev/ep/if_ep.c,v 1.95.2.3 2002/03/06 07:26:35 imp Exp $ |
| 42 | * $DragonFly: src/sys/dev/netif/ep/if_ep.c,v 1.24 2006/01/28 14:05:57 sephe Exp $ |
| 43 | * |
| 44 | * Promiscuous mode added and interrupt logic slightly changed |
| 45 | * to reduce the number of adapter failures. Transceiver select |
| 46 | * logic changed to use value from EEPROM. Autoconfiguration |
| 47 | * features added. |
| 48 | * Done by: |
| 49 | * Serge Babkin |
| 50 | * Chelindbank (Chelyabinsk, Russia) |
| 51 | * babkin@hq.icb.chel.su |
| 52 | */ |
| 53 | |
| 54 | /* |
| 55 | * Pccard support for 3C589 by: |
| 56 | * HAMADA Naoki |
| 57 | * nao@tom-yam.or.jp |
| 58 | */ |
| 59 | |
| 60 | /* |
| 61 | * MAINTAINER: Matthew N. Dodd <winter@jurai.net> |
| 62 | * <mdodd@FreeBSD.org> |
| 63 | */ |
| 64 | |
| 65 | #include <sys/param.h> |
| 66 | #include <sys/kernel.h> |
| 67 | #include <sys/systm.h> |
| 68 | #include <sys/malloc.h> |
| 69 | #include <sys/mbuf.h> |
| 70 | #include <sys/socket.h> |
| 71 | #include <sys/sockio.h> |
| 72 | #include <sys/thread2.h> |
| 73 | |
| 74 | #include <sys/module.h> |
| 75 | #include <sys/bus.h> |
| 76 | |
| 77 | #include <machine/bus.h> |
| 78 | #include <machine/resource.h> |
| 79 | #include <sys/rman.h> |
| 80 | |
| 81 | #include <net/if.h> |
| 82 | #include <net/ifq_var.h> |
| 83 | #include <net/if_arp.h> |
| 84 | #include <net/if_media.h> |
| 85 | #include <net/ethernet.h> |
| 86 | #include <net/bpf.h> |
| 87 | |
| 88 | #include <netinet/in.h> |
| 89 | #include <netinet/if_ether.h> |
| 90 | |
| 91 | #include <machine/clock.h> |
| 92 | |
| 93 | #include "if_epreg.h" |
| 94 | #include "if_epvar.h" |
| 95 | #include "../elink_layer/elink.h" |
| 96 | |
| 97 | /* Exported variables */ |
| 98 | devclass_t ep_devclass; |
| 99 | |
| 100 | #if 0 |
| 101 | static char * ep_conn_type[] = {"UTP", "AUI", "???", "BNC"}; |
| 102 | static int if_media2ep_media[] = { 0, 0, 0, UTP, BNC, AUI }; |
| 103 | #endif |
| 104 | |
| 105 | static int ep_media2if_media[] = |
| 106 | { IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE }; |
| 107 | |
| 108 | /* if functions */ |
| 109 | static void ep_if_init (void *); |
| 110 | static int ep_if_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); |
| 111 | static void ep_if_start (struct ifnet *); |
| 112 | static void ep_if_watchdog (struct ifnet *); |
| 113 | |
| 114 | /* if_media functions */ |
| 115 | static int ep_ifmedia_upd (struct ifnet *); |
| 116 | static void ep_ifmedia_sts (struct ifnet *, struct ifmediareq *); |
| 117 | |
| 118 | static void epstop (struct ep_softc *); |
| 119 | static void epread (struct ep_softc *); |
| 120 | static int eeprom_rdy (struct ep_softc *); |
| 121 | |
| 122 | DECLARE_DUMMY_MODULE(if_ep); |
| 123 | |
| 124 | #define EP_FTST(sc, f) (sc->stat & (f)) |
| 125 | #define EP_FSET(sc, f) (sc->stat |= (f)) |
| 126 | #define EP_FRST(sc, f) (sc->stat &= ~(f)) |
| 127 | |
| 128 | static int |
| 129 | eeprom_rdy(struct ep_softc *sc) |
| 130 | { |
| 131 | int i; |
| 132 | |
| 133 | for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++) { |
| 134 | DELAY(100); |
| 135 | } |
| 136 | if (i >= MAX_EEPROMBUSY) { |
| 137 | if_printf(&sc->arpcom.ac_if, "eeprom failed to come ready.\n"); |
| 138 | return (0); |
| 139 | } |
| 140 | return (1); |
| 141 | } |
| 142 | |
| 143 | /* |
| 144 | * get_e: gets a 16 bits word from the EEPROM. we must have set the window |
| 145 | * before |
| 146 | */ |
| 147 | u_int16_t |
| 148 | get_e(struct ep_softc *sc, int offset) |
| 149 | { |
| 150 | if (!eeprom_rdy(sc)) |
| 151 | return (0); |
| 152 | outw(BASE + EP_W0_EEPROM_COMMAND, (EEPROM_CMD_RD << sc->epb.cmd_off) | offset); |
| 153 | if (!eeprom_rdy(sc)) |
| 154 | return (0); |
| 155 | return (inw(BASE + EP_W0_EEPROM_DATA)); |
| 156 | } |
| 157 | |
| 158 | void |
| 159 | ep_get_macaddr(struct ep_softc *sc, uint8_t *addr) |
| 160 | { |
| 161 | int i; |
| 162 | u_int16_t * macaddr = (u_int16_t *)addr; |
| 163 | |
| 164 | GO_WINDOW(0); |
| 165 | for(i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) { |
| 166 | macaddr[i] = htons(get_e(sc, i)); |
| 167 | } |
| 168 | |
| 169 | return; |
| 170 | } |
| 171 | |
| 172 | int |
| 173 | ep_alloc(device_t dev) |
| 174 | { |
| 175 | struct ep_softc * sc = device_get_softc(dev); |
| 176 | int rid; |
| 177 | int error = 0; |
| 178 | |
| 179 | rid = 0; |
| 180 | sc->iobase = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, |
| 181 | RF_ACTIVE); |
| 182 | if (!sc->iobase) { |
| 183 | device_printf(dev, "No I/O space?!\n"); |
| 184 | error = ENXIO; |
| 185 | goto bad; |
| 186 | } |
| 187 | |
| 188 | rid = 0; |
| 189 | sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); |
| 190 | if (!sc->irq) { |
| 191 | device_printf(dev, "No irq?!\n"); |
| 192 | error = ENXIO; |
| 193 | goto bad; |
| 194 | } |
| 195 | |
| 196 | if_initname(&sc->arpcom.ac_if, |
| 197 | device_get_name(dev), device_get_unit(dev)); |
| 198 | sc->stat = 0; /* 16 bit access */ |
| 199 | |
| 200 | sc->ep_io_addr = rman_get_start(sc->iobase); |
| 201 | |
| 202 | sc->ep_btag = rman_get_bustag(sc->iobase); |
| 203 | sc->ep_bhandle = rman_get_bushandle(sc->iobase); |
| 204 | |
| 205 | sc->ep_connectors = 0; |
| 206 | sc->ep_connector = 0; |
| 207 | |
| 208 | GO_WINDOW(0); |
| 209 | sc->epb.cmd_off = 0; |
| 210 | sc->epb.prod_id = get_e(sc, EEPROM_PROD_ID); |
| 211 | sc->epb.res_cfg = get_e(sc, EEPROM_RESOURCE_CFG); |
| 212 | |
| 213 | bad: |
| 214 | return (error); |
| 215 | } |
| 216 | |
| 217 | void |
| 218 | ep_get_media(struct ep_softc *sc) |
| 219 | { |
| 220 | u_int16_t config; |
| 221 | |
| 222 | GO_WINDOW(0); |
| 223 | config = inw(BASE + EP_W0_CONFIG_CTRL); |
| 224 | if (config & IS_AUI) |
| 225 | sc->ep_connectors |= AUI; |
| 226 | if (config & IS_BNC) |
| 227 | sc->ep_connectors |= BNC; |
| 228 | if (config & IS_UTP) |
| 229 | sc->ep_connectors |= UTP; |
| 230 | |
| 231 | if (!(sc->ep_connectors & 7)) { |
| 232 | if (bootverbose) |
| 233 | if_printf(&sc->arpcom.ac_if, "no connectors!\n"); |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * This works for most of the cards so we'll do it here. |
| 238 | * The cards that require something different can override |
| 239 | * this later on. |
| 240 | */ |
| 241 | sc->ep_connector = inw(BASE + EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS; |
| 242 | |
| 243 | return; |
| 244 | } |
| 245 | |
| 246 | void |
| 247 | ep_free(device_t dev) |
| 248 | { |
| 249 | struct ep_softc * sc = device_get_softc(dev); |
| 250 | |
| 251 | if (sc->iobase) |
| 252 | bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase); |
| 253 | if (sc->irq) |
| 254 | bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq); |
| 255 | |
| 256 | return; |
| 257 | } |
| 258 | |
| 259 | int |
| 260 | ep_attach(struct ep_softc *sc) |
| 261 | { |
| 262 | struct ifnet * ifp = NULL; |
| 263 | struct ifmedia * ifm = NULL; |
| 264 | u_short * p; |
| 265 | uint8_t ether_addr[ETHER_ADDR_LEN]; |
| 266 | int i; |
| 267 | |
| 268 | sc->gone = 0; |
| 269 | |
| 270 | ep_get_macaddr(sc, ether_addr); |
| 271 | |
| 272 | /* |
| 273 | * Setup the station address |
| 274 | */ |
| 275 | p = (u_short*)ether_addr; |
| 276 | GO_WINDOW(2); |
| 277 | for (i = 0; i < 3; i++) { |
| 278 | outw(BASE + EP_W2_ADDR_0 + (i * 2), ntohs(p[i])); |
| 279 | } |
| 280 | |
| 281 | ifp = &sc->arpcom.ac_if; |
| 282 | |
| 283 | ifp->if_softc = sc; |
| 284 | ifp->if_mtu = ETHERMTU; |
| 285 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 286 | ifp->if_start = ep_if_start; |
| 287 | ifp->if_ioctl = ep_if_ioctl; |
| 288 | ifp->if_watchdog = ep_if_watchdog; |
| 289 | ifp->if_init = ep_if_init; |
| 290 | ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); |
| 291 | ifq_set_ready(&ifp->if_snd); |
| 292 | |
| 293 | if (!sc->epb.mii_trans) { |
| 294 | ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts); |
| 295 | |
| 296 | if (sc->ep_connectors & AUI) |
| 297 | ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); |
| 298 | if (sc->ep_connectors & UTP) |
| 299 | ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); |
| 300 | if (sc->ep_connectors & BNC) |
| 301 | ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_2, 0, NULL); |
| 302 | if (!sc->ep_connectors) |
| 303 | ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_NONE, 0, NULL); |
| 304 | |
| 305 | ifmedia_set(&sc->ifmedia, IFM_ETHER|ep_media2if_media[sc->ep_connector]); |
| 306 | |
| 307 | ifm = &sc->ifmedia; |
| 308 | ifm->ifm_media = ifm->ifm_cur->ifm_media; |
| 309 | ep_ifmedia_upd(ifp); |
| 310 | } |
| 311 | |
| 312 | ether_ifattach(ifp, ether_addr, NULL); |
| 313 | |
| 314 | #ifdef EP_LOCAL_STATS |
| 315 | sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc = |
| 316 | sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; |
| 317 | #endif |
| 318 | EP_FSET(sc, F_RX_FIRST); |
| 319 | sc->top = sc->mcur = 0; |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * The order in here seems important. Otherwise we may not receive |
| 326 | * interrupts. ?! |
| 327 | */ |
| 328 | static void |
| 329 | ep_if_init(void *xsc) |
| 330 | { |
| 331 | struct ep_softc *sc = xsc; |
| 332 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 333 | int i; |
| 334 | |
| 335 | if (sc->gone) |
| 336 | return; |
| 337 | |
| 338 | crit_enter(); |
| 339 | |
| 340 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 341 | |
| 342 | GO_WINDOW(0); |
| 343 | outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); |
| 344 | GO_WINDOW(4); |
| 345 | outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP); |
| 346 | GO_WINDOW(0); |
| 347 | |
| 348 | /* Disable the card */ |
| 349 | outw(BASE + EP_W0_CONFIG_CTRL, 0); |
| 350 | |
| 351 | /* Enable the card */ |
| 352 | outw(BASE + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ); |
| 353 | |
| 354 | GO_WINDOW(2); |
| 355 | |
| 356 | /* Reload the ether_addr. */ |
| 357 | for (i = 0; i < 6; i++) |
| 358 | outb(BASE + EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]); |
| 359 | |
| 360 | outw(BASE + EP_COMMAND, RX_RESET); |
| 361 | outw(BASE + EP_COMMAND, TX_RESET); |
| 362 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 363 | |
| 364 | /* Window 1 is operating window */ |
| 365 | GO_WINDOW(1); |
| 366 | for (i = 0; i < 31; i++) |
| 367 | inb(BASE + EP_W1_TX_STATUS); |
| 368 | |
| 369 | /* get rid of stray intr's */ |
| 370 | outw(BASE + EP_COMMAND, ACK_INTR | 0xff); |
| 371 | |
| 372 | outw(BASE + EP_COMMAND, SET_RD_0_MASK | S_5_INTS); |
| 373 | |
| 374 | outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS); |
| 375 | |
| 376 | if (ifp->if_flags & IFF_PROMISC) |
| 377 | outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | |
| 378 | FIL_GROUP | FIL_BRDCST | FIL_ALL); |
| 379 | else |
| 380 | outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | |
| 381 | FIL_GROUP | FIL_BRDCST); |
| 382 | |
| 383 | if (!sc->epb.mii_trans) { |
| 384 | ep_ifmedia_upd(ifp); |
| 385 | } |
| 386 | |
| 387 | outw(BASE + EP_COMMAND, RX_ENABLE); |
| 388 | outw(BASE + EP_COMMAND, TX_ENABLE); |
| 389 | |
| 390 | ifp->if_flags |= IFF_RUNNING; |
| 391 | ifp->if_flags &= ~IFF_OACTIVE; /* just in case */ |
| 392 | |
| 393 | #ifdef EP_LOCAL_STATS |
| 394 | sc->rx_no_first = sc->rx_no_mbuf = |
| 395 | sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; |
| 396 | #endif |
| 397 | EP_FSET(sc, F_RX_FIRST); |
| 398 | if (sc->top) { |
| 399 | m_freem(sc->top); |
| 400 | sc->top = sc->mcur = 0; |
| 401 | } |
| 402 | outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); |
| 403 | outw(BASE + EP_COMMAND, SET_TX_START_THRESH | 16); |
| 404 | |
| 405 | /* |
| 406 | * Store up a bunch of mbuf's for use later. (MAX_MBS). First we free up |
| 407 | * any that we had in case we're being called from intr or somewhere |
| 408 | * else. |
| 409 | */ |
| 410 | |
| 411 | GO_WINDOW(1); |
| 412 | ep_if_start(ifp); |
| 413 | |
| 414 | crit_exit(); |
| 415 | } |
| 416 | |
| 417 | static const char padmap[] = {0, 3, 2, 1}; |
| 418 | |
| 419 | static void |
| 420 | ep_if_start(struct ifnet *ifp) |
| 421 | { |
| 422 | struct ep_softc *sc = ifp->if_softc; |
| 423 | u_int len; |
| 424 | struct mbuf *m; |
| 425 | struct mbuf *top; |
| 426 | int pad; |
| 427 | |
| 428 | if (sc->gone) { |
| 429 | return; |
| 430 | } |
| 431 | |
| 432 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 433 | if (ifp->if_flags & IFF_OACTIVE) { |
| 434 | return; |
| 435 | } |
| 436 | |
| 437 | crit_enter(); |
| 438 | |
| 439 | startagain: |
| 440 | /* Sneak a peek at the next packet */ |
| 441 | m = ifq_poll(&ifp->if_snd); |
| 442 | if (m == NULL) { |
| 443 | crit_exit(); |
| 444 | return; |
| 445 | } |
| 446 | |
| 447 | for (len = 0, top = m; m; m = m->m_next) |
| 448 | len += m->m_len; |
| 449 | m = top; |
| 450 | |
| 451 | pad = padmap[len & 3]; |
| 452 | |
| 453 | /* |
| 454 | * The 3c509 automatically pads short packets to minimum ethernet length, |
| 455 | * but we drop packets that are too large. Perhaps we should truncate |
| 456 | * them instead? |
| 457 | */ |
| 458 | if (len + pad > ETHER_MAX_LEN) { |
| 459 | /* packet is obviously too large: toss it */ |
| 460 | ++ifp->if_oerrors; |
| 461 | ifq_dequeue(&ifp->if_snd, m); |
| 462 | m_freem(m); |
| 463 | goto readcheck; |
| 464 | } |
| 465 | if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) { |
| 466 | /* no room in FIFO */ |
| 467 | outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4)); |
| 468 | /* make sure */ |
| 469 | if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) { |
| 470 | ifp->if_flags |= IFF_OACTIVE; |
| 471 | crit_exit(); |
| 472 | return; |
| 473 | } |
| 474 | } else { |
| 475 | outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE); |
| 476 | } |
| 477 | |
| 478 | ifq_dequeue(&ifp->if_snd, m); |
| 479 | |
| 480 | outw(BASE + EP_W1_TX_PIO_WR_1, len); |
| 481 | outw(BASE + EP_W1_TX_PIO_WR_1, 0x0); /* Second dword meaningless */ |
| 482 | |
| 483 | if (EP_FTST(sc, F_ACCESS_32_BITS)) { |
| 484 | for (top = m; m != 0; m = m->m_next) { |
| 485 | outsl(BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), |
| 486 | m->m_len / 4); |
| 487 | if (m->m_len & 3) |
| 488 | outsb(BASE + EP_W1_TX_PIO_WR_1, |
| 489 | mtod(m, caddr_t) + (m->m_len & (~3)), |
| 490 | m->m_len & 3); |
| 491 | } |
| 492 | } else { |
| 493 | for (top = m; m != 0; m = m->m_next) { |
| 494 | outsw(BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), m->m_len / 2); |
| 495 | if (m->m_len & 1) |
| 496 | outb(BASE + EP_W1_TX_PIO_WR_1, |
| 497 | *(mtod(m, caddr_t) + m->m_len - 1)); |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | while (pad--) |
| 502 | outb(BASE + EP_W1_TX_PIO_WR_1, 0); /* Padding */ |
| 503 | |
| 504 | BPF_MTAP(ifp, top); |
| 505 | |
| 506 | ifp->if_timer = 2; |
| 507 | ifp->if_opackets++; |
| 508 | m_freem(top); |
| 509 | |
| 510 | /* |
| 511 | * Is another packet coming in? We don't want to overflow the tiny RX |
| 512 | * fifo. |
| 513 | */ |
| 514 | readcheck: |
| 515 | if (inw(BASE + EP_W1_RX_STATUS) & RX_BYTES_MASK) { |
| 516 | /* |
| 517 | * we check if we have packets left, in that case we prepare to come |
| 518 | * back later |
| 519 | */ |
| 520 | if (!ifq_is_empty(&ifp->if_snd)) |
| 521 | outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8); |
| 522 | |
| 523 | crit_exit(); |
| 524 | return; |
| 525 | } |
| 526 | goto startagain; |
| 527 | } |
| 528 | |
| 529 | void |
| 530 | ep_intr(void *arg) |
| 531 | { |
| 532 | struct ep_softc *sc = arg; |
| 533 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 534 | int status; |
| 535 | |
| 536 | /* |
| 537 | * quick fix: Try to detect an interrupt when the card goes away. |
| 538 | */ |
| 539 | if (sc->gone || inw(BASE + EP_STATUS) == 0xffff) { |
| 540 | return; |
| 541 | } |
| 542 | |
| 543 | outw(BASE + EP_COMMAND, SET_INTR_MASK); /* disable all Ints */ |
| 544 | |
| 545 | rescan: |
| 546 | |
| 547 | while ((status = inw(BASE + EP_STATUS)) & S_5_INTS) { |
| 548 | |
| 549 | /* first acknowledge all interrupt sources */ |
| 550 | outw(BASE + EP_COMMAND, ACK_INTR | (status & S_MASK)); |
| 551 | |
| 552 | if (status & (S_RX_COMPLETE | S_RX_EARLY)) |
| 553 | epread(sc); |
| 554 | if (status & S_TX_AVAIL) { |
| 555 | /* we need ACK */ |
| 556 | ifp->if_timer = 0; |
| 557 | ifp->if_flags &= ~IFF_OACTIVE; |
| 558 | GO_WINDOW(1); |
| 559 | inw(BASE + EP_W1_FREE_TX); |
| 560 | ep_if_start(ifp); |
| 561 | } |
| 562 | if (status & S_CARD_FAILURE) { |
| 563 | ifp->if_timer = 0; |
| 564 | #ifdef EP_LOCAL_STATS |
| 565 | printf("\n"); |
| 566 | if_printf(ifp, "\n\tStatus: %x\n", status); |
| 567 | GO_WINDOW(4); |
| 568 | printf("\tFIFO Diagnostic: %x\n", inw(BASE + EP_W4_FIFO_DIAG)); |
| 569 | printf("\tStat: %x\n", sc->stat); |
| 570 | printf("\tIpackets=%d, Opackets=%d\n", |
| 571 | ifp->if_ipackets, ifp->if_opackets); |
| 572 | printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n", |
| 573 | sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf, |
| 574 | sc->rx_overrunl, sc->tx_underrun); |
| 575 | #else |
| 576 | |
| 577 | #ifdef DIAGNOSTIC |
| 578 | if_printf(ifp, "Status: %x (input buffer overflow)\n", status); |
| 579 | #else |
| 580 | ++ifp->if_ierrors; |
| 581 | #endif |
| 582 | |
| 583 | #endif |
| 584 | ep_if_init(sc); |
| 585 | return; |
| 586 | } |
| 587 | if (status & S_TX_COMPLETE) { |
| 588 | ifp->if_timer = 0; |
| 589 | /* we need ACK. we do it at the end */ |
| 590 | /* |
| 591 | * We need to read TX_STATUS until we get a 0 status in order to |
| 592 | * turn off the interrupt flag. |
| 593 | */ |
| 594 | while ((status = inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE) { |
| 595 | if (status & TXS_SUCCES_INTR_REQ); |
| 596 | else if (status & (TXS_UNDERRUN | TXS_JABBER | TXS_MAX_COLLISION)) { |
| 597 | outw(BASE + EP_COMMAND, TX_RESET); |
| 598 | if (status & TXS_UNDERRUN) { |
| 599 | #ifdef EP_LOCAL_STATS |
| 600 | sc->tx_underrun++; |
| 601 | #endif |
| 602 | } else { |
| 603 | if (status & TXS_JABBER); |
| 604 | else /* TXS_MAX_COLLISION - we shouldn't get here */ |
| 605 | ++ifp->if_collisions; |
| 606 | } |
| 607 | ++ifp->if_oerrors; |
| 608 | outw(BASE + EP_COMMAND, TX_ENABLE); |
| 609 | /* |
| 610 | * To have a tx_avail_int but giving the chance to the |
| 611 | * Reception |
| 612 | */ |
| 613 | if (!ifq_is_empty(&ifp->if_snd)) |
| 614 | outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8); |
| 615 | } |
| 616 | outb(BASE + EP_W1_TX_STATUS, 0x0); /* pops up the next |
| 617 | * status */ |
| 618 | } /* while */ |
| 619 | ifp->if_flags &= ~IFF_OACTIVE; |
| 620 | GO_WINDOW(1); |
| 621 | inw(BASE + EP_W1_FREE_TX); |
| 622 | ep_if_start(ifp); |
| 623 | } /* end TX_COMPLETE */ |
| 624 | } |
| 625 | |
| 626 | outw(BASE + EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */ |
| 627 | |
| 628 | if ((status = inw(BASE + EP_STATUS)) & S_5_INTS) |
| 629 | goto rescan; |
| 630 | |
| 631 | /* re-enable Ints */ |
| 632 | outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS); |
| 633 | } |
| 634 | |
| 635 | static void |
| 636 | epread(struct ep_softc *sc) |
| 637 | { |
| 638 | struct mbuf *top, *mcur, *m; |
| 639 | struct ifnet *ifp; |
| 640 | int lenthisone; |
| 641 | |
| 642 | short rx_fifo2, status; |
| 643 | short rx_fifo; |
| 644 | |
| 645 | ifp = &sc->arpcom.ac_if; |
| 646 | status = inw(BASE + EP_W1_RX_STATUS); |
| 647 | |
| 648 | read_again: |
| 649 | |
| 650 | if (status & ERR_RX) { |
| 651 | ++ifp->if_ierrors; |
| 652 | if (status & ERR_RX_OVERRUN) { |
| 653 | /* |
| 654 | * we can think the rx latency is actually greather than we |
| 655 | * expect |
| 656 | */ |
| 657 | #ifdef EP_LOCAL_STATS |
| 658 | if (EP_FTST(sc, F_RX_FIRST)) |
| 659 | sc->rx_overrunf++; |
| 660 | else |
| 661 | sc->rx_overrunl++; |
| 662 | #endif |
| 663 | } |
| 664 | goto out; |
| 665 | } |
| 666 | rx_fifo = rx_fifo2 = status & RX_BYTES_MASK; |
| 667 | |
| 668 | if (EP_FTST(sc, F_RX_FIRST)) { |
| 669 | m = m_getl(rx_fifo, MB_DONTWAIT, MT_DATA, M_PKTHDR, NULL); |
| 670 | if (!m) |
| 671 | goto out; |
| 672 | sc->top = sc->mcur = top = m; |
| 673 | #define EROUND ((sizeof(struct ether_header) + 3) & ~3) |
| 674 | #define EOFF (EROUND - sizeof(struct ether_header)) |
| 675 | top->m_data += EOFF; |
| 676 | |
| 677 | /* Read what should be the header. */ |
| 678 | insw(BASE + EP_W1_RX_PIO_RD_1, |
| 679 | mtod(top, caddr_t), sizeof(struct ether_header) / 2); |
| 680 | top->m_len = sizeof(struct ether_header); |
| 681 | rx_fifo -= sizeof(struct ether_header); |
| 682 | sc->cur_len = rx_fifo2; |
| 683 | } else { |
| 684 | /* come here if we didn't have a complete packet last time */ |
| 685 | top = sc->top; |
| 686 | m = sc->mcur; |
| 687 | sc->cur_len += rx_fifo2; |
| 688 | } |
| 689 | |
| 690 | /* Reads what is left in the RX FIFO */ |
| 691 | while (rx_fifo > 0) { |
| 692 | lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); |
| 693 | if (lenthisone == 0) { /* no room in this one */ |
| 694 | mcur = m; |
| 695 | m = m_getl(rx_fifo, MB_DONTWAIT, MT_DATA, 0, NULL); |
| 696 | if (!m) |
| 697 | goto out; |
| 698 | m->m_len = 0; |
| 699 | mcur->m_next = m; |
| 700 | lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); |
| 701 | } |
| 702 | if (EP_FTST(sc, F_ACCESS_32_BITS)) { /* default for EISA configured cards*/ |
| 703 | insl(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, |
| 704 | lenthisone / 4); |
| 705 | m->m_len += (lenthisone & ~3); |
| 706 | if (lenthisone & 3) |
| 707 | insb(BASE + EP_W1_RX_PIO_RD_1, |
| 708 | mtod(m, caddr_t) + m->m_len, |
| 709 | lenthisone & 3); |
| 710 | m->m_len += (lenthisone & 3); |
| 711 | } else { |
| 712 | insw(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, |
| 713 | lenthisone / 2); |
| 714 | m->m_len += lenthisone; |
| 715 | if (lenthisone & 1) |
| 716 | *(mtod(m, caddr_t) + m->m_len - 1) = inb(BASE + EP_W1_RX_PIO_RD_1); |
| 717 | } |
| 718 | rx_fifo -= lenthisone; |
| 719 | } |
| 720 | |
| 721 | if (status & ERR_RX_INCOMPLETE) { /* we haven't received the complete |
| 722 | * packet */ |
| 723 | sc->mcur = m; |
| 724 | #ifdef EP_LOCAL_STATS |
| 725 | sc->rx_no_first++; /* to know how often we come here */ |
| 726 | #endif |
| 727 | EP_FRST(sc, F_RX_FIRST); |
| 728 | if (!((status = inw(BASE + EP_W1_RX_STATUS)) & ERR_RX_INCOMPLETE)) { |
| 729 | /* we see if by now, the packet has completly arrived */ |
| 730 | goto read_again; |
| 731 | } |
| 732 | outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH); |
| 733 | return; |
| 734 | } |
| 735 | outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); |
| 736 | ++ifp->if_ipackets; |
| 737 | EP_FSET(sc, F_RX_FIRST); |
| 738 | top->m_pkthdr.rcvif = &sc->arpcom.ac_if; |
| 739 | top->m_pkthdr.len = sc->cur_len; |
| 740 | |
| 741 | ifp->if_input(ifp, top); |
| 742 | sc->top = 0; |
| 743 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 744 | outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); |
| 745 | return; |
| 746 | |
| 747 | out: |
| 748 | outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); |
| 749 | if (sc->top) { |
| 750 | m_freem(sc->top); |
| 751 | sc->top = 0; |
| 752 | #ifdef EP_LOCAL_STATS |
| 753 | sc->rx_no_mbuf++; |
| 754 | #endif |
| 755 | } |
| 756 | EP_FSET(sc, F_RX_FIRST); |
| 757 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 758 | outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); |
| 759 | } |
| 760 | |
| 761 | static int |
| 762 | ep_ifmedia_upd(struct ifnet *ifp) |
| 763 | { |
| 764 | struct ep_softc * sc = ifp->if_softc; |
| 765 | int i = 0, j; |
| 766 | |
| 767 | GO_WINDOW(0); |
| 768 | outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); |
| 769 | GO_WINDOW(4); |
| 770 | outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP); |
| 771 | GO_WINDOW(0); |
| 772 | |
| 773 | switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) { |
| 774 | case IFM_10_T: |
| 775 | if (sc->ep_connectors & UTP) { |
| 776 | i = ACF_CONNECTOR_UTP; |
| 777 | GO_WINDOW(4); |
| 778 | outw(BASE + EP_W4_MEDIA_TYPE, ENABLE_UTP); |
| 779 | } |
| 780 | break; |
| 781 | case IFM_10_2: |
| 782 | if (sc->ep_connectors & BNC) { |
| 783 | i = ACF_CONNECTOR_BNC; |
| 784 | outw(BASE + EP_COMMAND, START_TRANSCEIVER); |
| 785 | DELAY(DELAY_MULTIPLE * 1000); |
| 786 | } |
| 787 | break; |
| 788 | case IFM_10_5: |
| 789 | if (sc->ep_connectors & AUI) |
| 790 | i = ACF_CONNECTOR_AUI; |
| 791 | break; |
| 792 | default: |
| 793 | i = sc->ep_connector; |
| 794 | if_printf(ifp, "strange connector type in EEPROM: " |
| 795 | "assuming AUI\n"); |
| 796 | break; |
| 797 | } |
| 798 | |
| 799 | GO_WINDOW(0); |
| 800 | j = inw(BASE + EP_W0_ADDRESS_CFG) & 0x3fff; |
| 801 | outw(BASE + EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS)); |
| 802 | |
| 803 | return (0); |
| 804 | } |
| 805 | |
| 806 | static void |
| 807 | ep_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) |
| 808 | { |
| 809 | struct ep_softc * sc = ifp->if_softc; |
| 810 | |
| 811 | ifmr->ifm_active = sc->ifmedia.ifm_media; |
| 812 | |
| 813 | return; |
| 814 | } |
| 815 | |
| 816 | static int |
| 817 | ep_if_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr) |
| 818 | { |
| 819 | struct ep_softc * sc = ifp->if_softc; |
| 820 | struct ifreq * ifr = (struct ifreq *)data; |
| 821 | int error = 0; |
| 822 | |
| 823 | crit_enter(); |
| 824 | |
| 825 | switch (cmd) { |
| 826 | case SIOCSIFFLAGS: |
| 827 | if (((ifp->if_flags & IFF_UP) == 0) && |
| 828 | (ifp->if_flags & IFF_RUNNING)) { |
| 829 | ifp->if_flags &= ~IFF_RUNNING; |
| 830 | epstop(sc); |
| 831 | } else { |
| 832 | /* reinitialize card on any parameter change */ |
| 833 | ep_if_init(sc); |
| 834 | } |
| 835 | break; |
| 836 | #ifdef notdef |
| 837 | case SIOCGHWADDR: |
| 838 | bcopy((caddr_t) sc->sc_addr, (caddr_t) & ifr->ifr_data, |
| 839 | sizeof(sc->sc_addr)); |
| 840 | break; |
| 841 | #endif |
| 842 | case SIOCADDMULTI: |
| 843 | case SIOCDELMULTI: |
| 844 | /* |
| 845 | * The Etherlink III has no programmable multicast |
| 846 | * filter. We always initialize the card to be |
| 847 | * promiscuous to multicast, since we're always a |
| 848 | * member of the ALL-SYSTEMS group, so there's no |
| 849 | * need to process SIOC*MULTI requests. |
| 850 | */ |
| 851 | error = 0; |
| 852 | break; |
| 853 | case SIOCSIFMEDIA: |
| 854 | case SIOCGIFMEDIA: |
| 855 | if (!sc->epb.mii_trans) { |
| 856 | error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd); |
| 857 | } else { |
| 858 | error = EINVAL; |
| 859 | } |
| 860 | break; |
| 861 | default: |
| 862 | error = ether_ioctl(ifp, cmd, data); |
| 863 | break; |
| 864 | } |
| 865 | |
| 866 | crit_exit(); |
| 867 | |
| 868 | return (error); |
| 869 | } |
| 870 | |
| 871 | static void |
| 872 | ep_if_watchdog(struct ifnet *ifp) |
| 873 | { |
| 874 | struct ep_softc *sc = ifp->if_softc; |
| 875 | |
| 876 | /* |
| 877 | if_printf(ifp, "watchdog\n"); |
| 878 | |
| 879 | log(LOG_ERR, "%s: watchdog\n", ifp->if_xname); |
| 880 | ifp->if_oerrors++; |
| 881 | */ |
| 882 | |
| 883 | if (sc->gone) { |
| 884 | return; |
| 885 | } |
| 886 | |
| 887 | ifp->if_flags &= ~IFF_OACTIVE; |
| 888 | ep_if_start(ifp); |
| 889 | ep_intr(ifp->if_softc); |
| 890 | } |
| 891 | |
| 892 | static void |
| 893 | epstop(struct ep_softc *sc) |
| 894 | { |
| 895 | if (sc->gone) { |
| 896 | return; |
| 897 | } |
| 898 | |
| 899 | outw(BASE + EP_COMMAND, RX_DISABLE); |
| 900 | outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); |
| 901 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 902 | outw(BASE + EP_COMMAND, TX_DISABLE); |
| 903 | outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); |
| 904 | outw(BASE + EP_COMMAND, RX_RESET); |
| 905 | outw(BASE + EP_COMMAND, TX_RESET); |
| 906 | while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); |
| 907 | outw(BASE + EP_COMMAND, C_INTR_LATCH); |
| 908 | outw(BASE + EP_COMMAND, SET_RD_0_MASK); |
| 909 | outw(BASE + EP_COMMAND, SET_INTR_MASK); |
| 910 | outw(BASE + EP_COMMAND, SET_RX_FILTER); |
| 911 | } |