| 1 | /*- |
| 2 | * Copyright (c) 1998, 1999 Scott Mitchell |
| 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 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $Id: if_xe.c,v 1.20 1999/06/13 19:17:40 scott Exp $ |
| 27 | * $FreeBSD: src/sys/dev/xe/if_xe.c,v 1.13.2.6 2003/02/05 22:03:57 mbr Exp $ |
| 28 | * $DragonFly: src/sys/dev/netif/xe/if_xe.c,v 1.25 2005/07/13 17:31:05 joerg Exp $ |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * XXX TODO XXX |
| 33 | * |
| 34 | * I've pushed this fairly far, but there are some things that need to be |
| 35 | * done here. I'm documenting them here in case I get destracted. -- imp |
| 36 | * |
| 37 | * xe_cem56fix -- need to figure out how to map the extra stuff. |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | * Portions of this software were derived from Werner Koch's xirc2ps driver |
| 42 | * for Linux under the terms of the following license (from v1.30 of the |
| 43 | * xirc2ps driver): |
| 44 | * |
| 45 | * Copyright (c) 1997 by Werner Koch (dd9jn) |
| 46 | * |
| 47 | * Redistribution and use in source and binary forms, with or without |
| 48 | * modification, are permitted provided that the following conditions |
| 49 | * are met: |
| 50 | * 1. Redistributions of source code must retain the above copyright |
| 51 | * notice, and the entire permission notice in its entirety, |
| 52 | * including the disclaimer of warranties. |
| 53 | * 2. Redistributions in binary form must reproduce the above copyright |
| 54 | * notice, this list of conditions and the following disclaimer in the |
| 55 | * documentation and/or other materials provided with the distribution. |
| 56 | * 3. The name of the author may not be used to endorse or promote |
| 57 | * products derived from this software without specific prior |
| 58 | * written permission. |
| 59 | * |
| 60 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 61 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 62 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 63 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
| 64 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 65 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 66 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 67 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 68 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 69 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 70 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 71 | */ |
| 72 | |
| 73 | /* |
| 74 | * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The |
| 75 | * following cards are currently known to work with the driver: |
| 76 | * Xircom CreditCard 10/100 (CE3) |
| 77 | * Xircom CreditCard Ethernet + Modem 28 (CEM28) |
| 78 | * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) |
| 79 | * Xircom RealPort Ethernet 10 |
| 80 | * Xircom RealPort Ethernet 10/100 |
| 81 | * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) |
| 82 | * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) |
| 83 | * Compaq Netelligent 10/100 PC Card (CPQ-10/100) |
| 84 | * |
| 85 | * Some other cards *should* work, but support for them is either broken or in |
| 86 | * an unknown state at the moment. I'm always interested in hearing from |
| 87 | * people who own any of these cards: |
| 88 | * Xircom CreditCard 10Base-T (PS-CE2-10) |
| 89 | * Xircom CreditCard Ethernet + ModemII (CEM2) |
| 90 | * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) |
| 91 | * |
| 92 | * Thanks to all who assisted with the development and testing of the driver, |
| 93 | * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru |
| 94 | * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left |
| 95 | * out anyone who deserves a mention here. |
| 96 | * |
| 97 | * Special thanks to Ade Lovett for both hosting the mailing list and doing |
| 98 | * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting |
| 99 | * the web pages. |
| 100 | * |
| 101 | * Contact points: |
| 102 | * |
| 103 | * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ |
| 104 | * |
| 105 | * Mailing list: http://www.lovett.com/lists/freebsd-xircom/ |
| 106 | * or send "subscribe freebsd-xircom" to <majordomo@lovett.com> |
| 107 | * |
| 108 | * Author email: <scott@uk.freebsd.org> |
| 109 | */ |
| 110 | |
| 111 | |
| 112 | #include <sys/param.h> |
| 113 | #include <sys/cdefs.h> |
| 114 | #include <sys/errno.h> |
| 115 | #include <sys/kernel.h> |
| 116 | #include <sys/mbuf.h> |
| 117 | #include <sys/select.h> |
| 118 | #include <sys/socket.h> |
| 119 | #include <sys/sockio.h> |
| 120 | #include <sys/systm.h> |
| 121 | #include <sys/uio.h> |
| 122 | #include <sys/thread2.h> |
| 123 | |
| 124 | #include <sys/module.h> |
| 125 | #include <sys/bus.h> |
| 126 | |
| 127 | #include <machine/bus.h> |
| 128 | #include <machine/resource.h> |
| 129 | #include <sys/rman.h> |
| 130 | |
| 131 | #include <net/ethernet.h> |
| 132 | #include <net/if.h> |
| 133 | #include <net/ifq_var.h> |
| 134 | #include <net/if_arp.h> |
| 135 | #include <net/if_dl.h> |
| 136 | #include <net/if_media.h> |
| 137 | #include <net/if_mib.h> |
| 138 | #include <net/bpf.h> |
| 139 | |
| 140 | #include "if_xereg.h" |
| 141 | #include "if_xevar.h" |
| 142 | |
| 143 | /* |
| 144 | * MII command structure |
| 145 | */ |
| 146 | struct xe_mii_frame { |
| 147 | u_int8_t mii_stdelim; |
| 148 | u_int8_t mii_opcode; |
| 149 | u_int8_t mii_phyaddr; |
| 150 | u_int8_t mii_regaddr; |
| 151 | u_int8_t mii_turnaround; |
| 152 | u_int16_t mii_data; |
| 153 | }; |
| 154 | |
| 155 | /* |
| 156 | * Media autonegotiation progress constants |
| 157 | */ |
| 158 | #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ |
| 159 | #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ |
| 160 | #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ |
| 161 | #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ |
| 162 | #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ |
| 163 | |
| 164 | |
| 165 | /* |
| 166 | * Prototypes start here |
| 167 | */ |
| 168 | static void xe_init (void *xscp); |
| 169 | static void xe_start (struct ifnet *ifp); |
| 170 | static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *); |
| 171 | static void xe_watchdog (struct ifnet *ifp); |
| 172 | static int xe_media_change (struct ifnet *ifp); |
| 173 | static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); |
| 174 | static timeout_t xe_setmedia; |
| 175 | static void xe_hard_reset (struct xe_softc *scp); |
| 176 | static void xe_soft_reset (struct xe_softc *scp); |
| 177 | static void xe_stop (struct xe_softc *scp); |
| 178 | static void xe_enable_intr (struct xe_softc *scp); |
| 179 | static void xe_disable_intr (struct xe_softc *scp); |
| 180 | static void xe_setmulti (struct xe_softc *scp); |
| 181 | static void xe_setaddrs (struct xe_softc *scp); |
| 182 | static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); |
| 183 | #if 0 |
| 184 | static u_int32_t xe_compute_crc (u_int8_t *data, int len); |
| 185 | static int xe_compute_hashbit (u_int32_t crc); |
| 186 | #endif |
| 187 | |
| 188 | /* |
| 189 | * MII functions |
| 190 | */ |
| 191 | static void xe_mii_sync (struct xe_softc *scp); |
| 192 | static int xe_mii_init (struct xe_softc *scp); |
| 193 | static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); |
| 194 | static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); |
| 195 | static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); |
| 196 | static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); |
| 197 | static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); |
| 198 | |
| 199 | /* |
| 200 | * Debug functions -- uncomment for VERY verbose dignostic information. |
| 201 | * Set to 1 for less verbose information |
| 202 | */ |
| 203 | /* #define XE_DEBUG 2 */ |
| 204 | #ifdef XE_DEBUG |
| 205 | #define XE_REG_DUMP(scp) xe_reg_dump((scp)) |
| 206 | #define XE_MII_DUMP(scp) xe_mii_dump((scp)) |
| 207 | static void xe_reg_dump (struct xe_softc *scp); |
| 208 | static void xe_mii_dump (struct xe_softc *scp); |
| 209 | #else |
| 210 | #define XE_REG_DUMP(scp) |
| 211 | #define XE_MII_DUMP(scp) |
| 212 | #endif |
| 213 | |
| 214 | /* |
| 215 | * The device entry is being removed, probably because someone ejected the |
| 216 | * card. The interface should have been brought down manually before calling |
| 217 | * this function; if not you may well lose packets. In any case, I shut down |
| 218 | * the card and the interface, and hope for the best. |
| 219 | */ |
| 220 | int |
| 221 | xe_detach(device_t dev) |
| 222 | { |
| 223 | struct xe_softc *sc = device_get_softc(dev); |
| 224 | |
| 225 | sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; |
| 226 | callout_stop(&sc->xe_timer); |
| 227 | ether_ifdetach(&sc->arpcom.ac_if); |
| 228 | xe_deactivate(dev); |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | /* |
| 233 | * Attach a device. |
| 234 | */ |
| 235 | int |
| 236 | xe_attach (device_t dev) |
| 237 | { |
| 238 | struct xe_softc *scp = device_get_softc(dev); |
| 239 | |
| 240 | #ifdef XE_DEBUG |
| 241 | device_printf(dev, "attach\n"); |
| 242 | #endif |
| 243 | |
| 244 | /* Fill in some private data */ |
| 245 | scp->ifp = &scp->arpcom.ac_if; |
| 246 | scp->ifm = &scp->ifmedia; |
| 247 | scp->autoneg_status = 0; |
| 248 | |
| 249 | /* Hopefully safe to read this here */ |
| 250 | XE_SELECT_PAGE(4); |
| 251 | scp->version = XE_INB(XE_BOV); |
| 252 | |
| 253 | /* Initialise the ifnet structure */ |
| 254 | scp->ifp->if_softc = scp; |
| 255 | if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev)); |
| 256 | scp->ifp->if_timer = 0; |
| 257 | scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); |
| 258 | scp->ifp->if_linkmib = &scp->mibdata; |
| 259 | scp->ifp->if_linkmiblen = sizeof scp->mibdata; |
| 260 | scp->ifp->if_start = xe_start; |
| 261 | scp->ifp->if_ioctl = xe_ioctl; |
| 262 | scp->ifp->if_watchdog = xe_watchdog; |
| 263 | scp->ifp->if_init = xe_init; |
| 264 | ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN); |
| 265 | ifq_set_ready(&scp->ifp->if_snd); |
| 266 | |
| 267 | /* Initialise the ifmedia structure */ |
| 268 | ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); |
| 269 | callout_init(&scp->xe_timer); |
| 270 | |
| 271 | /* |
| 272 | * Fill in supported media types. Some cards _do_ support full duplex |
| 273 | * operation, but this driver doesn't, yet. Therefore we leave those modes |
| 274 | * out of the list. We support some form of autoselection in all cases. |
| 275 | */ |
| 276 | if (scp->mohawk) { |
| 277 | ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); |
| 278 | ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); |
| 279 | } |
| 280 | else { |
| 281 | ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); |
| 282 | ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); |
| 283 | } |
| 284 | ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); |
| 285 | |
| 286 | /* Default is to autoselect best supported media type */ |
| 287 | ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); |
| 288 | |
| 289 | /* Print some useful information */ |
| 290 | device_printf(dev, "%s %s, bonding version %#x%s%s\n", |
| 291 | scp->vendor, |
| 292 | scp->card_type, |
| 293 | scp->version, |
| 294 | scp->mohawk ? ", 100Mbps capable" : "", |
| 295 | scp->modem ? ", with modem" : ""); |
| 296 | if (scp->mohawk) { |
| 297 | XE_SELECT_PAGE(0x10); |
| 298 | device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", |
| 299 | XE_INW(XE_DINGOID), |
| 300 | XE_INW(XE_RevID), |
| 301 | XE_INW(XE_VendorID)); |
| 302 | } |
| 303 | if (scp->ce2) { |
| 304 | XE_SELECT_PAGE(0x45); |
| 305 | device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); |
| 306 | } |
| 307 | |
| 308 | /* Attach the interface */ |
| 309 | ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr); |
| 310 | |
| 311 | /* Done */ |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /* |
| 317 | * Initialize device. Completes the reset procedure on the card and starts |
| 318 | * output. If there's an autonegotiation in progress we DON'T do anything; |
| 319 | * the media selection code will call us again when it's done. |
| 320 | */ |
| 321 | static void |
| 322 | xe_init(void *xscp) { |
| 323 | struct xe_softc *scp = xscp; |
| 324 | |
| 325 | #ifdef XE_DEBUG |
| 326 | if_printf(scp->ifp, "init\n"); |
| 327 | #endif |
| 328 | |
| 329 | /* Reset transmitter flags */ |
| 330 | scp->tx_queued = 0; |
| 331 | scp->tx_tpr = 0; |
| 332 | scp->tx_collisions = 0; |
| 333 | scp->ifp->if_timer = 0; |
| 334 | |
| 335 | crit_enter(); |
| 336 | |
| 337 | XE_SELECT_PAGE(0x42); |
| 338 | XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ |
| 339 | |
| 340 | /* |
| 341 | * Set the 'local memory dividing line' -- splits the 32K card memory into |
| 342 | * 8K for transmit buffers and 24K for receive. This is done automatically |
| 343 | * on newer revision cards. |
| 344 | */ |
| 345 | if (scp->srev != 1) { |
| 346 | XE_SELECT_PAGE(2); |
| 347 | XE_OUTW(XE_RBS, 0x2000); |
| 348 | } |
| 349 | |
| 350 | /* Set up multicast addresses */ |
| 351 | xe_setmulti(scp); |
| 352 | |
| 353 | /* Fix the data offset register -- reset leaves it off-by-one */ |
| 354 | XE_SELECT_PAGE(0); |
| 355 | XE_OUTW(XE_DO, 0x2000); |
| 356 | |
| 357 | /* |
| 358 | * Set MAC interrupt masks and clear status regs. The bit names are direct |
| 359 | * from the Linux code; I have no idea what most of them do. |
| 360 | */ |
| 361 | XE_SELECT_PAGE(0x40); /* Bit 7..0 */ |
| 362 | XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ |
| 363 | XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ |
| 364 | XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ |
| 365 | XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ |
| 366 | XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ |
| 367 | XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ |
| 368 | |
| 369 | /* |
| 370 | * Check for an in-progress autonegotiation. If one is active, just set |
| 371 | * IFF_RUNNING and return. The media selection code will call us again when |
| 372 | * it's done. |
| 373 | */ |
| 374 | if (scp->autoneg_status) { |
| 375 | scp->ifp->if_flags |= IFF_RUNNING; |
| 376 | } |
| 377 | else { |
| 378 | /* Enable receiver, put MAC online */ |
| 379 | XE_SELECT_PAGE(0x40); |
| 380 | XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); |
| 381 | |
| 382 | /* Set up IMR, enable interrupts */ |
| 383 | xe_enable_intr(scp); |
| 384 | |
| 385 | /* Attempt to start output */ |
| 386 | scp->ifp->if_flags |= IFF_RUNNING; |
| 387 | scp->ifp->if_flags &= ~IFF_OACTIVE; |
| 388 | xe_start(scp->ifp); |
| 389 | } |
| 390 | |
| 391 | crit_exit(); |
| 392 | } |
| 393 | |
| 394 | |
| 395 | /* |
| 396 | * Start output on interface. We make two assumptions here: |
| 397 | * 1) that we are in a critical section _before_ this code |
| 398 | * is called *and* is returned to the appropriate priority after |
| 399 | * return |
| 400 | * 2) that the IFF_OACTIVE flag is checked before this code is called |
| 401 | * (i.e. that the output part of the interface is idle) |
| 402 | */ |
| 403 | static void |
| 404 | xe_start(struct ifnet *ifp) { |
| 405 | struct xe_softc *scp = ifp->if_softc; |
| 406 | struct mbuf *mbp; |
| 407 | |
| 408 | /* |
| 409 | * Loop while there are packets to be sent, and space to send them. |
| 410 | */ |
| 411 | while (1) { |
| 412 | mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */ |
| 413 | |
| 414 | if (mbp == NULL) { |
| 415 | /* |
| 416 | * We are using the !OACTIVE flag to indicate to the outside world that |
| 417 | * we can accept an additional packet rather than that the transmitter |
| 418 | * is _actually_ active. Indeed, the transmitter may be active, but if |
| 419 | * we haven't filled all the buffers with data then we still want to |
| 420 | * accept more. |
| 421 | */ |
| 422 | ifp->if_flags &= ~IFF_OACTIVE; |
| 423 | return; |
| 424 | } |
| 425 | |
| 426 | if (xe_pio_write_packet(scp, mbp) != 0) { |
| 427 | ifp->if_flags |= IFF_OACTIVE; |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | mbp = ifq_dequeue(&ifp->if_snd); |
| 432 | BPF_MTAP(ifp, mbp); |
| 433 | |
| 434 | ifp->if_timer = 5; /* In case we don't hear from the card again */ |
| 435 | scp->tx_queued++; |
| 436 | |
| 437 | m_freem(mbp); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | |
| 442 | /* |
| 443 | * Process an ioctl request. Adapted from the ed driver. |
| 444 | */ |
| 445 | static int |
| 446 | xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { |
| 447 | struct xe_softc *scp; |
| 448 | int error; |
| 449 | |
| 450 | scp = ifp->if_softc; |
| 451 | error = 0; |
| 452 | |
| 453 | crit_enter(); |
| 454 | |
| 455 | switch (command) { |
| 456 | |
| 457 | case SIOCSIFFLAGS: |
| 458 | /* |
| 459 | * If the interface is marked up and stopped, then start it. If it is |
| 460 | * marked down and running, then stop it. |
| 461 | */ |
| 462 | if (ifp->if_flags & IFF_UP) { |
| 463 | if (!(ifp->if_flags & IFF_RUNNING)) { |
| 464 | xe_hard_reset(scp); |
| 465 | xe_setmedia(scp); |
| 466 | xe_init(scp); |
| 467 | } |
| 468 | } |
| 469 | else { |
| 470 | if (ifp->if_flags & IFF_RUNNING) |
| 471 | xe_stop(scp); |
| 472 | } |
| 473 | |
| 474 | case SIOCADDMULTI: |
| 475 | case SIOCDELMULTI: |
| 476 | /* |
| 477 | * Multicast list has (maybe) changed; set the hardware filter |
| 478 | * accordingly. This also serves to deal with promiscuous mode if we have |
| 479 | * a BPF listener active. |
| 480 | */ |
| 481 | xe_setmulti(scp); |
| 482 | error = 0; |
| 483 | break; |
| 484 | |
| 485 | case SIOCSIFMEDIA: |
| 486 | case SIOCGIFMEDIA: |
| 487 | /* |
| 488 | * Someone wants to get/set media options. |
| 489 | */ |
| 490 | error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); |
| 491 | break; |
| 492 | |
| 493 | default: |
| 494 | error = ether_ioctl(ifp, command, data); |
| 495 | break; |
| 496 | } |
| 497 | |
| 498 | crit_exit(); |
| 499 | |
| 500 | return error; |
| 501 | } |
| 502 | |
| 503 | |
| 504 | /* |
| 505 | * Card interrupt handler. |
| 506 | * |
| 507 | * This function is probably more complicated than it needs to be, as it |
| 508 | * attempts to deal with the case where multiple packets get sent between |
| 509 | * interrupts. This is especially annoying when working out the collision |
| 510 | * stats. Not sure whether this case ever really happens or not (maybe on a |
| 511 | * slow/heavily loaded machine?) so it's probably best to leave this like it |
| 512 | * is. |
| 513 | * |
| 514 | * Note that the crappy PIO used to get packets on and off the card means that |
| 515 | * you will spend a lot of time in this routine -- I can get my P150 to spend |
| 516 | * 90% of its time servicing interrupts if I really hammer the network. Could |
| 517 | * fix this, but then you'd start dropping/losing packets. The moral of this |
| 518 | * story? If you want good network performance _and_ some cycles left over to |
| 519 | * get your work done, don't buy a Xircom card. Or convince them to tell me |
| 520 | * how to do memory-mapped I/O :) |
| 521 | */ |
| 522 | static void |
| 523 | xe_intr(void *xscp) |
| 524 | { |
| 525 | struct xe_softc *scp = (struct xe_softc *) xscp; |
| 526 | struct ifnet *ifp; |
| 527 | int result; |
| 528 | u_int16_t rx_bytes, rxs, txs; |
| 529 | u_int8_t psr, isr, esr, rsr; |
| 530 | |
| 531 | ifp = &scp->arpcom.ac_if; |
| 532 | rx_bytes = 0; /* Bytes received on this interrupt */ |
| 533 | result = 0; /* Set true if the interrupt is for us */ |
| 534 | |
| 535 | if (scp->mohawk) { |
| 536 | XE_OUTB(XE_CR, 0); /* Disable interrupts */ |
| 537 | } |
| 538 | |
| 539 | psr = XE_INB(XE_PR); /* Stash the current register page */ |
| 540 | |
| 541 | /* |
| 542 | * Read ISR to see what caused this interrupt. Note that this clears the |
| 543 | * ISR on CE2 type cards. |
| 544 | */ |
| 545 | if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { |
| 546 | |
| 547 | result = 1; /* This device did generate an int */ |
| 548 | esr = XE_INB(XE_ESR); /* Read the other status registers */ |
| 549 | XE_SELECT_PAGE(0x40); |
| 550 | rxs = XE_INB(XE_RST0); |
| 551 | XE_OUTB(XE_RST0, ~rxs & 0xff); |
| 552 | txs = XE_INB(XE_TXST0); |
| 553 | txs |= XE_INB(XE_TXST1) << 8; |
| 554 | XE_OUTB(XE_TXST0, 0); |
| 555 | XE_OUTB(XE_TXST1, 0); |
| 556 | XE_SELECT_PAGE(0); |
| 557 | |
| 558 | #if XE_DEBUG > 2 |
| 559 | if_printf(ifp, "ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", isr, esr, rxs, txs); |
| 560 | #endif |
| 561 | |
| 562 | /* |
| 563 | * Handle transmit interrupts |
| 564 | */ |
| 565 | if (isr & XE_ISR_TX_PACKET) { |
| 566 | u_int8_t new_tpr, sent; |
| 567 | |
| 568 | if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ |
| 569 | sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ |
| 570 | else |
| 571 | sent = new_tpr - scp->tx_tpr; |
| 572 | |
| 573 | if (sent > 0) { /* Packets sent since last interrupt */ |
| 574 | scp->tx_tpr = new_tpr; |
| 575 | scp->tx_queued -= sent; |
| 576 | ifp->if_opackets += sent; |
| 577 | ifp->if_collisions += scp->tx_collisions; |
| 578 | |
| 579 | /* |
| 580 | * Collision stats are a PITA. If multiples frames have been sent, we |
| 581 | * distribute any outstanding collision count equally amongst them. |
| 582 | * However, if we're missing interrupts we're quite likely to also |
| 583 | * miss some collisions; thus the total count will be off anyway. |
| 584 | * Likewise, if we miss a frame dropped due to excessive collisions |
| 585 | * any outstanding collisions count will be held against the next |
| 586 | * frame to be successfully sent. Hopefully it averages out in the |
| 587 | * end! |
| 588 | * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! |
| 589 | */ |
| 590 | switch (scp->tx_collisions) { |
| 591 | case 0: |
| 592 | break; |
| 593 | case 1: |
| 594 | scp->mibdata.dot3StatsSingleCollisionFrames++; |
| 595 | scp->mibdata.dot3StatsCollFrequencies[0]++; |
| 596 | break; |
| 597 | default: |
| 598 | if (sent == 1) { |
| 599 | scp->mibdata.dot3StatsMultipleCollisionFrames++; |
| 600 | scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; |
| 601 | } |
| 602 | else { /* Distribute across multiple frames */ |
| 603 | scp->mibdata.dot3StatsMultipleCollisionFrames += sent; |
| 604 | scp->mibdata. |
| 605 | dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; |
| 606 | scp->mibdata. |
| 607 | dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; |
| 608 | } |
| 609 | } |
| 610 | scp->tx_collisions = 0; |
| 611 | } |
| 612 | ifp->if_timer = 0; |
| 613 | ifp->if_flags &= ~IFF_OACTIVE; |
| 614 | } |
| 615 | if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ |
| 616 | ifp->if_collisions += 16; |
| 617 | ifp->if_oerrors++; |
| 618 | scp->tx_collisions = 0; |
| 619 | scp->mibdata.dot3StatsExcessiveCollisions++; |
| 620 | scp->mibdata.dot3StatsMultipleCollisionFrames++; |
| 621 | scp->mibdata.dot3StatsCollFrequencies[15]++; |
| 622 | XE_OUTB(XE_CR, XE_CR_RESTART_TX); |
| 623 | } |
| 624 | if (txs & 0x0040) /* Transmit aborted -- probably collisions */ |
| 625 | scp->tx_collisions++; |
| 626 | |
| 627 | |
| 628 | /* |
| 629 | * Handle receive interrupts |
| 630 | */ |
| 631 | while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { |
| 632 | |
| 633 | if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { |
| 634 | struct ether_header *ehp; |
| 635 | struct mbuf *mbp; |
| 636 | u_int16_t len; |
| 637 | |
| 638 | len = XE_INW(XE_RBC); |
| 639 | |
| 640 | if (len == 0) |
| 641 | continue; |
| 642 | |
| 643 | #if 0 |
| 644 | /* |
| 645 | * Limit the amount of time we spend in this loop, dropping packets if |
| 646 | * necessary. The Linux code does this with considerably more |
| 647 | * finesse, adjusting the threshold dynamically. |
| 648 | */ |
| 649 | if ((rx_bytes += len) > 22000) { |
| 650 | ifp->if_iqdrops++; |
| 651 | scp->mibData.dot3StatsMissedFrames++; |
| 652 | XE_OUTW(XE_DO, 0x8000); |
| 653 | continue; |
| 654 | } |
| 655 | #endif |
| 656 | |
| 657 | if (len & 0x01) |
| 658 | len++; |
| 659 | |
| 660 | MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ |
| 661 | if (mbp != NULL) { |
| 662 | mbp->m_pkthdr.rcvif = ifp; |
| 663 | mbp->m_pkthdr.len = mbp->m_len = len; |
| 664 | |
| 665 | /* |
| 666 | * If the mbuf header isn't big enough for the packet, attach an |
| 667 | * mbuf cluster to hold it. The +2 is to allow for the nasty little |
| 668 | * alignment hack below. |
| 669 | */ |
| 670 | if (len + 2 > MHLEN) { |
| 671 | MCLGET(mbp, MB_DONTWAIT); |
| 672 | if ((mbp->m_flags & M_EXT) == 0) { |
| 673 | m_freem(mbp); |
| 674 | mbp = NULL; |
| 675 | } |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | if (mbp != NULL) { |
| 680 | /* |
| 681 | * The Ethernet header is 14 bytes long; thus the actual packet data |
| 682 | * won't be 32-bit aligned when it's dumped into the mbuf. We |
| 683 | * offset everything by 2 bytes to fix this. Apparently the |
| 684 | * alignment is important for NFS, damn its eyes. |
| 685 | */ |
| 686 | mbp->m_data += 2; |
| 687 | ehp = mtod(mbp, struct ether_header *); |
| 688 | |
| 689 | /* |
| 690 | * Now get the packet, including the Ethernet header and trailer (?) |
| 691 | * We use programmed I/O, because we don't know how to do shared |
| 692 | * memory with these cards. So yes, it's real slow, and heavy on |
| 693 | * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). |
| 694 | */ |
| 695 | if (scp->srev == 0) { /* Workaround a bug in old cards */ |
| 696 | u_short rhs; |
| 697 | |
| 698 | XE_SELECT_PAGE(5); |
| 699 | rhs = XE_INW(XE_RHSA); |
| 700 | XE_SELECT_PAGE(0); |
| 701 | |
| 702 | rhs += 3; /* Skip control info */ |
| 703 | |
| 704 | if (rhs >= 0x8000) |
| 705 | rhs = 0; |
| 706 | |
| 707 | if (rhs + len > 0x8000) { |
| 708 | int i; |
| 709 | |
| 710 | /* |
| 711 | * XXX - This i-- seems very wrong, but it's what the Linux guys |
| 712 | * XXX - do. Need someone with an old CE2 to test this for me. |
| 713 | * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll |
| 714 | * XXX - fix it? It seems as though the previous version would |
| 715 | * XXX - have caused an infinite loop (what, another one?). |
| 716 | */ |
| 717 | for (i = 0; i < len; i++, rhs++) { |
| 718 | ((char *)ehp)[i] = XE_INB(XE_EDP); |
| 719 | if (rhs == 0x8000) { |
| 720 | rhs = 0; |
| 721 | i--; |
| 722 | } |
| 723 | } |
| 724 | } |
| 725 | else |
| 726 | bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, |
| 727 | (u_int16_t *) ehp, len >> 1); |
| 728 | } |
| 729 | else |
| 730 | bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, |
| 731 | (u_int16_t *) ehp, len >> 1); |
| 732 | |
| 733 | /* Deliver packet to upper layers */ |
| 734 | if (mbp != NULL) { |
| 735 | mbp->m_pkthdr.len = mbp->m_len = len; |
| 736 | (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */ |
| 737 | ifp->if_ipackets++; /* Success! */ |
| 738 | } |
| 739 | XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ |
| 740 | } |
| 741 | } |
| 742 | else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ |
| 743 | scp->mibdata.dot3StatsFrameTooLongs++; |
| 744 | ifp->if_ierrors++; |
| 745 | } |
| 746 | else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ |
| 747 | scp->mibdata.dot3StatsFCSErrors++; |
| 748 | ifp->if_ierrors++; |
| 749 | } |
| 750 | else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ |
| 751 | scp->mibdata.dot3StatsAlignmentErrors++; |
| 752 | ifp->if_ierrors++; |
| 753 | } |
| 754 | } |
| 755 | if (rxs & 0x10) { /* Receiver overrun */ |
| 756 | scp->mibdata.dot3StatsInternalMacReceiveErrors++; |
| 757 | ifp->if_ierrors++; |
| 758 | XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); |
| 759 | } |
| 760 | } |
| 761 | |
| 762 | XE_SELECT_PAGE(psr); /* Restore saved page */ |
| 763 | XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ |
| 764 | |
| 765 | /* Could force an int here, instead of dropping packets? */ |
| 766 | /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ |
| 767 | |
| 768 | return; |
| 769 | } |
| 770 | |
| 771 | |
| 772 | /* |
| 773 | * Device timeout/watchdog routine. Called automatically if we queue a packet |
| 774 | * for transmission but don't get an interrupt within a specified timeout |
| 775 | * (usually 5 seconds). When this happens we assume the worst and reset the |
| 776 | * card. |
| 777 | */ |
| 778 | static void |
| 779 | xe_watchdog(struct ifnet *ifp) { |
| 780 | struct xe_softc *scp = ifp->if_softc; |
| 781 | |
| 782 | if_printf(ifp, "watchdog timeout; resetting card\n"); |
| 783 | scp->tx_timeouts++; |
| 784 | ifp->if_oerrors += scp->tx_queued; |
| 785 | xe_stop(scp); |
| 786 | xe_hard_reset(scp); |
| 787 | xe_setmedia(scp); |
| 788 | xe_init(scp); |
| 789 | } |
| 790 | |
| 791 | |
| 792 | /* |
| 793 | * Change media selection. |
| 794 | */ |
| 795 | static int |
| 796 | xe_media_change(struct ifnet *ifp) { |
| 797 | struct xe_softc *scp = ifp->if_softc; |
| 798 | |
| 799 | #ifdef XE_DEBUG |
| 800 | if_printf(ifp, "media_change\n"); |
| 801 | #endif |
| 802 | |
| 803 | if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) |
| 804 | return(EINVAL); |
| 805 | |
| 806 | /* |
| 807 | * Some card/media combos aren't always possible -- filter those out here. |
| 808 | */ |
| 809 | if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || |
| 810 | IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) |
| 811 | return (EINVAL); |
| 812 | |
| 813 | xe_setmedia(scp); |
| 814 | |
| 815 | return 0; |
| 816 | } |
| 817 | |
| 818 | |
| 819 | /* |
| 820 | * Return current media selection. |
| 821 | */ |
| 822 | static void |
| 823 | xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { |
| 824 | |
| 825 | #ifdef XE_DEBUG |
| 826 | if_printf(ifp, "media_status\n"); |
| 827 | #endif |
| 828 | |
| 829 | mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; |
| 830 | |
| 831 | return; |
| 832 | } |
| 833 | |
| 834 | |
| 835 | /* |
| 836 | * Select active media. |
| 837 | */ |
| 838 | static void xe_setmedia(void *xscp) { |
| 839 | struct xe_softc *scp = xscp; |
| 840 | u_int16_t bmcr, bmsr, anar, lpar; |
| 841 | |
| 842 | #ifdef XE_DEBUG |
| 843 | if_printf(scp->ifp, "setmedia\n"); |
| 844 | #endif |
| 845 | |
| 846 | /* Cancel any pending timeout */ |
| 847 | callout_stop(&scp->xe_timer); |
| 848 | xe_disable_intr(scp); |
| 849 | |
| 850 | /* Select media */ |
| 851 | scp->media = IFM_ETHER; |
| 852 | switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { |
| 853 | |
| 854 | case IFM_AUTO: /* Autoselect media */ |
| 855 | scp->media = IFM_ETHER|IFM_AUTO; |
| 856 | |
| 857 | /* |
| 858 | * Autoselection is really awful. It goes something like this: |
| 859 | * |
| 860 | * Wait until the transmitter goes idle (2sec timeout). |
| 861 | * Reset card |
| 862 | * IF a 100Mbit PHY exists |
| 863 | * Start NWAY autonegotiation (3.5sec timeout) |
| 864 | * IF that succeeds |
| 865 | * Select 100baseTX or 10baseT, whichever was detected |
| 866 | * ELSE |
| 867 | * Reset card |
| 868 | * IF a 100Mbit PHY exists |
| 869 | * Try to force a 100baseTX link (3sec timeout) |
| 870 | * IF that succeeds |
| 871 | * Select 100baseTX |
| 872 | * ELSE |
| 873 | * Disable the PHY |
| 874 | * ENDIF |
| 875 | * ENDIF |
| 876 | * ENDIF |
| 877 | * ENDIF |
| 878 | * IF nothing selected so far |
| 879 | * IF a 100Mbit PHY exists |
| 880 | * Select 10baseT |
| 881 | * ELSE |
| 882 | * Select 10baseT or 10base2, whichever is connected |
| 883 | * ENDIF |
| 884 | * ENDIF |
| 885 | */ |
| 886 | switch (scp->autoneg_status) { |
| 887 | |
| 888 | case XE_AUTONEG_NONE: |
| 889 | #if XE_DEBUG > 1 |
| 890 | if_printf(scp->ifp, "Waiting for idle transmitter\n"); |
| 891 | #endif |
| 892 | scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; |
| 893 | scp->autoneg_status = XE_AUTONEG_WAITING; |
| 894 | callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp); |
| 895 | return; |
| 896 | |
| 897 | case XE_AUTONEG_WAITING: |
| 898 | xe_soft_reset(scp); |
| 899 | if (scp->phy_ok) { |
| 900 | #if XE_DEBUG > 1 |
| 901 | if_printf(scp->ifp, "Starting autonegotiation\n"); |
| 902 | #endif |
| 903 | bmcr = xe_phy_readreg(scp, PHY_BMCR); |
| 904 | bmcr &= ~(PHY_BMCR_AUTONEGENBL); |
| 905 | xe_phy_writereg(scp, PHY_BMCR, bmcr); |
| 906 | anar = xe_phy_readreg(scp, PHY_ANAR); |
| 907 | anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); |
| 908 | anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; |
| 909 | xe_phy_writereg(scp, PHY_ANAR, anar); |
| 910 | bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; |
| 911 | xe_phy_writereg(scp, PHY_BMCR, bmcr); |
| 912 | scp->autoneg_status = XE_AUTONEG_STARTED; |
| 913 | callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp); |
| 914 | return; |
| 915 | } |
| 916 | else { |
| 917 | scp->autoneg_status = XE_AUTONEG_FAIL; |
| 918 | } |
| 919 | break; |
| 920 | |
| 921 | case XE_AUTONEG_STARTED: |
| 922 | bmsr = xe_phy_readreg(scp, PHY_BMSR); |
| 923 | lpar = xe_phy_readreg(scp, PHY_LPAR); |
| 924 | if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { |
| 925 | #if XE_DEBUG > 1 |
| 926 | if_printf(scp->ifp, "Autonegotiation complete!\n"); |
| 927 | #endif |
| 928 | /* |
| 929 | * XXX - Shouldn't have to do this, but (on my hub at least) the |
| 930 | * XXX - transmitter won't work after a successful autoneg. So we see |
| 931 | * XXX - what the negotiation result was and force that mode. I'm |
| 932 | * XXX - sure there is an easy fix for this. |
| 933 | */ |
| 934 | if (lpar & PHY_LPAR_100BTXHALF) { |
| 935 | xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); |
| 936 | XE_MII_DUMP(scp); |
| 937 | XE_SELECT_PAGE(2); |
| 938 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); |
| 939 | scp->media = IFM_ETHER|IFM_100_TX; |
| 940 | scp->autoneg_status = XE_AUTONEG_NONE; |
| 941 | } |
| 942 | else { |
| 943 | /* |
| 944 | * XXX - Bit of a hack going on in here. |
| 945 | * XXX - This is derived from Ken Hughes patch to the Linux driver |
| 946 | * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B |
| 947 | * XXX - cards. What's a CE3B and how's it differ from a plain CE3? |
| 948 | * XXX - these are the things we need to find out. |
| 949 | */ |
| 950 | xe_phy_writereg(scp, PHY_BMCR, 0x0000); |
| 951 | XE_SELECT_PAGE(2); |
| 952 | /* BEGIN HACK */ |
| 953 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); |
| 954 | XE_SELECT_PAGE(0x42); |
| 955 | XE_OUTB(XE_SWC1, 0x80); |
| 956 | scp->media = IFM_ETHER|IFM_10_T; |
| 957 | scp->autoneg_status = XE_AUTONEG_NONE; |
| 958 | /* END HACK */ |
| 959 | /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ |
| 960 | /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ |
| 961 | } |
| 962 | } |
| 963 | else { |
| 964 | #if XE_DEBUG > 1 |
| 965 | if_printf(scp->ifp, "Autonegotiation failed; trying 100baseTX\n"); |
| 966 | #endif |
| 967 | XE_MII_DUMP(scp); |
| 968 | xe_soft_reset(scp); |
| 969 | if (scp->phy_ok) { |
| 970 | xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); |
| 971 | scp->autoneg_status = XE_AUTONEG_100TX; |
| 972 | callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp); |
| 973 | return; |
| 974 | } |
| 975 | else { |
| 976 | scp->autoneg_status = XE_AUTONEG_FAIL; |
| 977 | } |
| 978 | } |
| 979 | break; |
| 980 | |
| 981 | case XE_AUTONEG_100TX: |
| 982 | (void)xe_phy_readreg(scp, PHY_BMSR); |
| 983 | bmsr = xe_phy_readreg(scp, PHY_BMSR); |
| 984 | if (bmsr & PHY_BMSR_LINKSTAT) { |
| 985 | #if XE_DEBUG > 1 |
| 986 | if_printf(scp->ifp, "Got 100baseTX link!\n"); |
| 987 | #endif |
| 988 | XE_MII_DUMP(scp); |
| 989 | XE_SELECT_PAGE(2); |
| 990 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); |
| 991 | scp->media = IFM_ETHER|IFM_100_TX; |
| 992 | scp->autoneg_status = XE_AUTONEG_NONE; |
| 993 | } |
| 994 | else { |
| 995 | #if XE_DEBUG > 1 |
| 996 | if_printf(scp->ifp, "Autonegotiation failed; disabling PHY\n"); |
| 997 | #endif |
| 998 | XE_MII_DUMP(scp); |
| 999 | xe_phy_writereg(scp, PHY_BMCR, 0x0000); |
| 1000 | XE_SELECT_PAGE(2); |
| 1001 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ |
| 1002 | scp->autoneg_status = XE_AUTONEG_FAIL; |
| 1003 | } |
| 1004 | break; |
| 1005 | } |
| 1006 | |
| 1007 | /* |
| 1008 | * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then |
| 1009 | * either autonegotiation failed, or never got started to begin with. In |
| 1010 | * either case, select a suitable 10Mbit media and hope it works. We |
| 1011 | * don't need to reset the card again, since it will have been done |
| 1012 | * already by the big switch above. |
| 1013 | */ |
| 1014 | if (scp->autoneg_status == XE_AUTONEG_FAIL) { |
| 1015 | #if XE_DEBUG > 1 |
| 1016 | if_printf(scp->ifp, "Selecting 10baseX\n"); |
| 1017 | #endif |
| 1018 | if (scp->mohawk) { |
| 1019 | XE_SELECT_PAGE(0x42); |
| 1020 | XE_OUTB(XE_SWC1, 0x80); |
| 1021 | scp->media = IFM_ETHER|IFM_10_T; |
| 1022 | scp->autoneg_status = XE_AUTONEG_NONE; |
| 1023 | } |
| 1024 | else { |
| 1025 | XE_SELECT_PAGE(4); |
| 1026 | XE_OUTB(XE_GPR0, 4); |
| 1027 | DELAY(50000); |
| 1028 | XE_SELECT_PAGE(0x42); |
| 1029 | XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); |
| 1030 | scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); |
| 1031 | scp->autoneg_status = XE_AUTONEG_NONE; |
| 1032 | } |
| 1033 | } |
| 1034 | break; |
| 1035 | |
| 1036 | |
| 1037 | /* |
| 1038 | * If a specific media has been requested, we just reset the card and |
| 1039 | * select it (one small exception -- if 100baseTX is requested by there is |
| 1040 | * no PHY, we fall back to 10baseT operation). |
| 1041 | */ |
| 1042 | case IFM_100_TX: /* Force 100baseTX */ |
| 1043 | xe_soft_reset(scp); |
| 1044 | if (scp->phy_ok) { |
| 1045 | #if XE_DEBUG > 1 |
| 1046 | if_printf(scp->ifp, "Selecting 100baseTX\n"); |
| 1047 | #endif |
| 1048 | XE_SELECT_PAGE(0x42); |
| 1049 | XE_OUTB(XE_SWC1, 0); |
| 1050 | xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); |
| 1051 | XE_SELECT_PAGE(2); |
| 1052 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); |
| 1053 | scp->media |= IFM_100_TX; |
| 1054 | break; |
| 1055 | } |
| 1056 | /* FALLTHROUGH */ |
| 1057 | |
| 1058 | case IFM_10_T: /* Force 10baseT */ |
| 1059 | xe_soft_reset(scp); |
| 1060 | #if XE_DEBUG > 1 |
| 1061 | if_printf(scp->ifp, "Selecting 10baseT\n"); |
| 1062 | #endif |
| 1063 | if (scp->phy_ok) { |
| 1064 | xe_phy_writereg(scp, PHY_BMCR, 0x0000); |
| 1065 | XE_SELECT_PAGE(2); |
| 1066 | XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ |
| 1067 | } |
| 1068 | XE_SELECT_PAGE(0x42); |
| 1069 | XE_OUTB(XE_SWC1, 0x80); |
| 1070 | scp->media |= IFM_10_T; |
| 1071 | break; |
| 1072 | |
| 1073 | case IFM_10_2: |
| 1074 | xe_soft_reset(scp); |
| 1075 | #if XE_DEBUG > 1 |
| 1076 | if_printf(scp->ifp, "Selecting 10base2\n"); |
| 1077 | #endif |
| 1078 | XE_SELECT_PAGE(0x42); |
| 1079 | XE_OUTB(XE_SWC1, 0xc0); |
| 1080 | scp->media |= IFM_10_2; |
| 1081 | break; |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | /* |
| 1086 | * Finally, the LEDs are set to match whatever media was chosen and the |
| 1087 | * transmitter is unblocked. |
| 1088 | */ |
| 1089 | #if XE_DEBUG > 1 |
| 1090 | if_printf(scp->ifp, "Setting LEDs\n"); |
| 1091 | #endif |
| 1092 | XE_SELECT_PAGE(2); |
| 1093 | switch (IFM_SUBTYPE(scp->media)) { |
| 1094 | case IFM_100_TX: |
| 1095 | case IFM_10_T: |
| 1096 | XE_OUTB(XE_LED, 0x3b); |
| 1097 | if (scp->dingo) |
| 1098 | XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ |
| 1099 | break; |
| 1100 | |
| 1101 | case IFM_10_2: |
| 1102 | XE_OUTB(XE_LED, 0x3a); |
| 1103 | break; |
| 1104 | } |
| 1105 | |
| 1106 | /* Restart output? */ |
| 1107 | scp->ifp->if_flags &= ~IFF_OACTIVE; |
| 1108 | xe_init(scp); |
| 1109 | } |
| 1110 | |
| 1111 | |
| 1112 | /* |
| 1113 | * Hard reset (power cycle) the card. |
| 1114 | */ |
| 1115 | static void |
| 1116 | xe_hard_reset(struct xe_softc *scp) { |
| 1117 | |
| 1118 | #ifdef XE_DEBUG |
| 1119 | if_printf(scp->ifp, "hard_reset\n"); |
| 1120 | #endif |
| 1121 | |
| 1122 | crit_enter(); |
| 1123 | |
| 1124 | /* |
| 1125 | * Power cycle the card. |
| 1126 | */ |
| 1127 | XE_SELECT_PAGE(4); |
| 1128 | XE_OUTB(XE_GPR1, 0); /* Power off */ |
| 1129 | DELAY(40000); |
| 1130 | |
| 1131 | if (scp->mohawk) |
| 1132 | XE_OUTB(XE_GPR1, 1); /* And back on again */ |
| 1133 | else |
| 1134 | XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ |
| 1135 | DELAY(40000); |
| 1136 | XE_SELECT_PAGE(0); |
| 1137 | |
| 1138 | crit_exit(); |
| 1139 | } |
| 1140 | |
| 1141 | |
| 1142 | /* |
| 1143 | * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller |
| 1144 | * are powered up, sets the silicon revision number in softc, disables |
| 1145 | * interrupts and checks for the prescence of a 100Mbit PHY. This should |
| 1146 | * leave us in a position where we can access the PHY and do media |
| 1147 | * selection. The function imposes a 0.5s delay while the hardware powers up. |
| 1148 | */ |
| 1149 | static void |
| 1150 | xe_soft_reset(struct xe_softc *scp) { |
| 1151 | |
| 1152 | #ifdef XE_DEBUG |
| 1153 | if_printf(scp->ifp, "soft_reset\n"); |
| 1154 | #endif |
| 1155 | |
| 1156 | crit_enter(); |
| 1157 | |
| 1158 | /* |
| 1159 | * Reset the card, (again). |
| 1160 | */ |
| 1161 | XE_SELECT_PAGE(0); |
| 1162 | XE_OUTB(XE_CR, XE_CR_SOFT_RESET); |
| 1163 | DELAY(40000); |
| 1164 | XE_OUTB(XE_CR, 0); |
| 1165 | DELAY(40000); |
| 1166 | |
| 1167 | if (scp->mohawk) { |
| 1168 | /* |
| 1169 | * set GP1 and GP2 as outputs (bits 2 & 3) |
| 1170 | * set GP1 low to power on the ML6692 (bit 0) |
| 1171 | * set GP2 high to power on the 10Mhz chip (bit 1) |
| 1172 | */ |
| 1173 | XE_SELECT_PAGE(4); |
| 1174 | XE_OUTB(XE_GPR0, 0x0e); |
| 1175 | } |
| 1176 | |
| 1177 | /* |
| 1178 | * Wait for everything to wake up. |
| 1179 | */ |
| 1180 | DELAY(500000); |
| 1181 | |
| 1182 | /* |
| 1183 | * Get silicon revision number. |
| 1184 | */ |
| 1185 | XE_SELECT_PAGE(4); |
| 1186 | if (scp->mohawk) |
| 1187 | scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; |
| 1188 | else |
| 1189 | scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; |
| 1190 | #ifdef XE_DEBUG |
| 1191 | if_printf(scp->ifp, "silicon revision = %d\n", scp->srev); |
| 1192 | #endif |
| 1193 | |
| 1194 | /* |
| 1195 | * Shut off interrupts. |
| 1196 | */ |
| 1197 | xe_disable_intr(scp); |
| 1198 | |
| 1199 | /* |
| 1200 | * Check for PHY. |
| 1201 | */ |
| 1202 | if (scp->mohawk) { |
| 1203 | scp->phy_ok = xe_mii_init(scp); |
| 1204 | } |
| 1205 | |
| 1206 | XE_SELECT_PAGE(0); |
| 1207 | |
| 1208 | crit_exit(); |
| 1209 | } |
| 1210 | |
| 1211 | |
| 1212 | /* |
| 1213 | * Take interface offline. This is done by powering down the device, which I |
| 1214 | * assume means just shutting down the transceiver and Ethernet logic. This |
| 1215 | * requires a _hard_ reset to recover from, as we need to power up again. |
| 1216 | */ |
| 1217 | static void |
| 1218 | xe_stop(struct xe_softc *scp) { |
| 1219 | |
| 1220 | #ifdef XE_DEBUG |
| 1221 | if_printf(scp->ifp, "stop\n"); |
| 1222 | #endif |
| 1223 | |
| 1224 | crit_enter(); |
| 1225 | |
| 1226 | /* |
| 1227 | * Shut off interrupts. |
| 1228 | */ |
| 1229 | xe_disable_intr(scp); |
| 1230 | |
| 1231 | /* |
| 1232 | * Power down. |
| 1233 | */ |
| 1234 | XE_SELECT_PAGE(4); |
| 1235 | XE_OUTB(XE_GPR1, 0); |
| 1236 | XE_SELECT_PAGE(0); |
| 1237 | |
| 1238 | /* |
| 1239 | * ~IFF_RUNNING == interface down. |
| 1240 | */ |
| 1241 | scp->ifp->if_flags &= ~IFF_RUNNING; |
| 1242 | scp->ifp->if_flags &= ~IFF_OACTIVE; |
| 1243 | scp->ifp->if_timer = 0; |
| 1244 | |
| 1245 | crit_exit(); |
| 1246 | } |
| 1247 | |
| 1248 | |
| 1249 | /* |
| 1250 | * Enable Ethernet interrupts from the card. |
| 1251 | */ |
| 1252 | static void |
| 1253 | xe_enable_intr(struct xe_softc *scp) { |
| 1254 | #ifdef XE_DEBUG |
| 1255 | if_printf(scp->ifp, "enable_intr\n"); |
| 1256 | #endif |
| 1257 | |
| 1258 | XE_SELECT_PAGE(1); |
| 1259 | XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ |
| 1260 | XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ |
| 1261 | DELAY(1); |
| 1262 | |
| 1263 | XE_SELECT_PAGE(0); |
| 1264 | XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ |
| 1265 | if (scp->modem && !scp->dingo) { /* This bit is just magic */ |
| 1266 | if (!(XE_INB(0x10) & 0x01)) { |
| 1267 | XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ |
| 1268 | } |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | /* |
| 1274 | * Disable all Ethernet interrupts from the card. |
| 1275 | */ |
| 1276 | static void |
| 1277 | xe_disable_intr(struct xe_softc *scp) { |
| 1278 | #ifdef XE_DEBUG |
| 1279 | if_printf(scp->ifp, "disable_intr\n"); |
| 1280 | #endif |
| 1281 | |
| 1282 | XE_SELECT_PAGE(0); |
| 1283 | XE_OUTB(XE_CR, 0); /* Disable interrupts */ |
| 1284 | if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ |
| 1285 | XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ |
| 1286 | } |
| 1287 | |
| 1288 | XE_SELECT_PAGE(1); |
| 1289 | XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ |
| 1290 | XE_OUTB(XE_IMR1, 0); |
| 1291 | XE_SELECT_PAGE(0); |
| 1292 | } |
| 1293 | |
| 1294 | |
| 1295 | /* |
| 1296 | * Set up multicast filter and promiscuous mode |
| 1297 | */ |
| 1298 | static void |
| 1299 | xe_setmulti(struct xe_softc *scp) { |
| 1300 | struct ifnet *ifp; |
| 1301 | struct ifmultiaddr *ifma; |
| 1302 | int count; |
| 1303 | |
| 1304 | ifp = &scp->arpcom.ac_if; |
| 1305 | |
| 1306 | /* Get length of multicast list */ |
| 1307 | count = 0; |
| 1308 | LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) |
| 1309 | count++; |
| 1310 | |
| 1311 | if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { |
| 1312 | /* |
| 1313 | * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are |
| 1314 | * set, or if we have been asked to deal with more than 9 multicast |
| 1315 | * addresses. To do this: set MPE and PME in SWC1 |
| 1316 | */ |
| 1317 | XE_SELECT_PAGE(0x42); |
| 1318 | XE_OUTB(XE_SWC1, 0x06); |
| 1319 | } |
| 1320 | else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { |
| 1321 | /* |
| 1322 | * Program the filters for up to 9 addresses |
| 1323 | */ |
| 1324 | XE_SELECT_PAGE(0x42); |
| 1325 | XE_OUTB(XE_SWC1, 0x01); |
| 1326 | XE_SELECT_PAGE(0x40); |
| 1327 | XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); |
| 1328 | /*xe_reg_dump(scp);*/ |
| 1329 | xe_setaddrs(scp); |
| 1330 | /*xe_reg_dump(scp);*/ |
| 1331 | XE_SELECT_PAGE(0x40); |
| 1332 | XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); |
| 1333 | } |
| 1334 | else { |
| 1335 | /* |
| 1336 | * No multicast operation (default) |
| 1337 | */ |
| 1338 | XE_SELECT_PAGE(0x42); |
| 1339 | XE_OUTB(XE_SWC1, 0); |
| 1340 | } |
| 1341 | XE_SELECT_PAGE(0); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | /* |
| 1346 | * Set up all on-chip addresses (for multicast). AFAICS, there are 10 |
| 1347 | * of these things; the first is our MAC address, the other 9 are mcast |
| 1348 | * addresses, padded with the MAC address if there aren't enough. |
| 1349 | * XXX - This doesn't work right, but I'm not sure why yet. We seem to be |
| 1350 | * XXX - doing much the same as the Linux code, which is weird enough that |
| 1351 | * XXX - it's probably right (despite my earlier comments to the contrary). |
| 1352 | */ |
| 1353 | static void |
| 1354 | xe_setaddrs(struct xe_softc *scp) { |
| 1355 | struct ifmultiaddr *ifma; |
| 1356 | u_int8_t *addr; |
| 1357 | u_int8_t page, slot, byte, i; |
| 1358 | |
| 1359 | ifma = LIST_FIRST(&scp->arpcom.ac_if.if_multiaddrs); |
| 1360 | |
| 1361 | XE_SELECT_PAGE(page = 0x50); |
| 1362 | |
| 1363 | for (slot = 0, byte = 8; slot < 10; slot++) { |
| 1364 | |
| 1365 | if (slot == 0) |
| 1366 | addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); |
| 1367 | else { |
| 1368 | while (ifma != NULL && ifma->ifma_addr->sa_family != AF_LINK) |
| 1369 | ifma = LIST_NEXT(ifma, ifma_link); |
| 1370 | if (ifma != NULL) |
| 1371 | addr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr); |
| 1372 | else |
| 1373 | addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); |
| 1374 | } |
| 1375 | |
| 1376 | for (i = 0; i < 6; i++, byte++) { |
| 1377 | #if XE_DEBUG > 2 |
| 1378 | if (i) |
| 1379 | printf(":%x", addr[i]); |
| 1380 | else |
| 1381 | if_printf(scp->ifp, "individual addresses %d: %x", slot, addr[0]); |
| 1382 | #endif |
| 1383 | |
| 1384 | if (byte > 15) { |
| 1385 | page++; |
| 1386 | byte = 8; |
| 1387 | XE_SELECT_PAGE(page); |
| 1388 | } |
| 1389 | |
| 1390 | if (scp->mohawk) |
| 1391 | XE_OUTB(byte, addr[5 - i]); |
| 1392 | else |
| 1393 | XE_OUTB(byte, addr[i]); |
| 1394 | } |
| 1395 | #if XE_DEBUG > 2 |
| 1396 | printf("\n"); |
| 1397 | #endif |
| 1398 | } |
| 1399 | |
| 1400 | XE_SELECT_PAGE(0); |
| 1401 | } |
| 1402 | |
| 1403 | |
| 1404 | /* |
| 1405 | * Write an outgoing packet to the card using programmed I/O. |
| 1406 | */ |
| 1407 | static int |
| 1408 | xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { |
| 1409 | struct mbuf *mbp2; |
| 1410 | u_int16_t len, pad, free, ok; |
| 1411 | u_int8_t *data; |
| 1412 | u_int8_t savebyte[2], wantbyte; |
| 1413 | |
| 1414 | /* Get total packet length */ |
| 1415 | for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); |
| 1416 | |
| 1417 | /* Packets < minimum length may need to be padded out */ |
| 1418 | pad = 0; |
| 1419 | if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { |
| 1420 | pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; |
| 1421 | len = ETHER_MIN_LEN - ETHER_CRC_LEN; |
| 1422 | } |
| 1423 | |
| 1424 | /* Check transmit buffer space */ |
| 1425 | XE_SELECT_PAGE(0); |
| 1426 | XE_OUTW(XE_TRS, len+2); |
| 1427 | free = XE_INW(XE_TSO); |
| 1428 | ok = free & 0x8000; |
| 1429 | free &= 0x7fff; |
| 1430 | if (free <= len + 2) |
| 1431 | return 1; |
| 1432 | |
| 1433 | /* Send packet length to card */ |
| 1434 | XE_OUTW(XE_EDP, len); |
| 1435 | |
| 1436 | /* |
| 1437 | * Write packet to card using PIO (code stolen from the ed driver) |
| 1438 | */ |
| 1439 | wantbyte = 0; |
| 1440 | while (mbp != NULL) { |
| 1441 | len = mbp->m_len; |
| 1442 | if (len > 0) { |
| 1443 | data = mtod(mbp, caddr_t); |
| 1444 | if (wantbyte) { /* Finish the last word */ |
| 1445 | savebyte[1] = *data; |
| 1446 | XE_OUTW(XE_EDP, *(u_short *)savebyte); |
| 1447 | data++; |
| 1448 | len--; |
| 1449 | wantbyte = 0; |
| 1450 | } |
| 1451 | if (len > 1) { /* Output contiguous words */ |
| 1452 | bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, |
| 1453 | len >> 1); |
| 1454 | data += len & ~1; |
| 1455 | len &= 1; |
| 1456 | } |
| 1457 | if (len == 1) { /* Save last byte, if necessary */ |
| 1458 | savebyte[0] = *data; |
| 1459 | wantbyte = 1; |
| 1460 | } |
| 1461 | } |
| 1462 | mbp = mbp->m_next; |
| 1463 | } |
| 1464 | if (wantbyte) /* Last byte for odd-length packets */ |
| 1465 | XE_OUTW(XE_EDP, *(u_short *)savebyte); |
| 1466 | |
| 1467 | /* |
| 1468 | * For CE3 cards, just tell 'em to send -- apparently the card will pad out |
| 1469 | * short packets with random cruft. Otherwise, write nonsense words to fill |
| 1470 | * out the packet. I guess it is then sent automatically (?) |
| 1471 | */ |
| 1472 | if (scp->mohawk) |
| 1473 | XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); |
| 1474 | else |
| 1475 | while (pad > 0) { |
| 1476 | XE_OUTW(XE_EDP, 0xdead); |
| 1477 | pad--; |
| 1478 | } |
| 1479 | |
| 1480 | return 0; |
| 1481 | } |
| 1482 | |
| 1483 | #if 0 |
| 1484 | /* |
| 1485 | * Compute the 32-bit Ethernet CRC for the given buffer. |
| 1486 | */ |
| 1487 | static u_int32_t |
| 1488 | xe_compute_crc(u_int8_t *data, int len) { |
| 1489 | u_int32_t crc = 0xffffffff; |
| 1490 | u_int32_t poly = 0x04c11db6; |
| 1491 | u_int8_t current, crc31, bit; |
| 1492 | int i, k; |
| 1493 | |
| 1494 | for (i = 0; i < len; i++) { |
| 1495 | current = data[i]; |
| 1496 | for (k = 1; k <= 8; k++) { |
| 1497 | if (crc & 0x80000000) { |
| 1498 | crc31 = 0x01; |
| 1499 | } |
| 1500 | else { |
| 1501 | crc31 = 0; |
| 1502 | } |
| 1503 | bit = crc31 ^ (current & 0x01); |
| 1504 | crc <<= 1; |
| 1505 | current >>= 1; |
| 1506 | if (bit) { |
| 1507 | crc = (crc ^ poly)|1; |
| 1508 | } |
| 1509 | } |
| 1510 | } |
| 1511 | return crc; |
| 1512 | } |
| 1513 | |
| 1514 | |
| 1515 | /* |
| 1516 | * Convert a CRC into an index into the multicast hash table. What we do is |
| 1517 | * take the most-significant 6 bits of the CRC, reverse them, and use that as |
| 1518 | * the bit number in the hash table. Bits 5:3 of the result give the byte |
| 1519 | * within the table (0-7); bits 2:0 give the bit number within that byte (also |
| 1520 | * 0-7), ie. the number of shifts needed to get it into the lsb position. |
| 1521 | */ |
| 1522 | static int |
| 1523 | xe_compute_hashbit(u_int32_t crc) { |
| 1524 | u_int8_t hashbit = 0; |
| 1525 | int i; |
| 1526 | |
| 1527 | for (i = 0; i < 6; i++) { |
| 1528 | hashbit >>= 1; |
| 1529 | if (crc & 0x80000000) { |
| 1530 | hashbit &= 0x80; |
| 1531 | } |
| 1532 | crc <<= 1; |
| 1533 | } |
| 1534 | return (hashbit >> 2); |
| 1535 | } |
| 1536 | |
| 1537 | #endif |
| 1538 | |
| 1539 | |
| 1540 | |
| 1541 | /************************************************************** |
| 1542 | * * |
| 1543 | * M I I F U N C T I O N S * |
| 1544 | * * |
| 1545 | **************************************************************/ |
| 1546 | |
| 1547 | /* |
| 1548 | * Alternative MII/PHY handling code adapted from the xl driver. It doesn't |
| 1549 | * seem to work any better than the xirc2_ps stuff, but it's cleaner code. |
| 1550 | * XXX - this stuff shouldn't be here. It should all be abstracted off to |
| 1551 | * XXX - some kind of common MII-handling code, shared by all drivers. But |
| 1552 | * XXX - that's a whole other mission. |
| 1553 | */ |
| 1554 | #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) |
| 1555 | #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) |
| 1556 | |
| 1557 | |
| 1558 | /* |
| 1559 | * Sync the PHYs by setting data bit and strobing the clock 32 times. |
| 1560 | */ |
| 1561 | static void |
| 1562 | xe_mii_sync(struct xe_softc *scp) { |
| 1563 | int i; |
| 1564 | |
| 1565 | XE_SELECT_PAGE(2); |
| 1566 | XE_MII_SET(XE_MII_DIR|XE_MII_WRD); |
| 1567 | |
| 1568 | for (i = 0; i < 32; i++) { |
| 1569 | XE_MII_SET(XE_MII_CLK); |
| 1570 | DELAY(1); |
| 1571 | XE_MII_CLR(XE_MII_CLK); |
| 1572 | DELAY(1); |
| 1573 | } |
| 1574 | } |
| 1575 | |
| 1576 | |
| 1577 | /* |
| 1578 | * Look for a MII-compliant PHY. If we find one, reset it. |
| 1579 | */ |
| 1580 | static int |
| 1581 | xe_mii_init(struct xe_softc *scp) { |
| 1582 | u_int16_t status; |
| 1583 | |
| 1584 | status = xe_phy_readreg(scp, PHY_BMSR); |
| 1585 | if ((status & 0xff00) != 0x7800) { |
| 1586 | #if XE_DEBUG > 1 |
| 1587 | if_printf(scp->ifp, "no PHY found, %0x\n", status); |
| 1588 | #endif |
| 1589 | return 0; |
| 1590 | } |
| 1591 | else { |
| 1592 | #if XE_DEBUG > 1 |
| 1593 | if_printf(scp->ifp, "PHY OK!\n"); |
| 1594 | #endif |
| 1595 | |
| 1596 | /* Reset the PHY */ |
| 1597 | xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); |
| 1598 | DELAY(500); |
| 1599 | while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); |
| 1600 | XE_MII_DUMP(scp); |
| 1601 | return 1; |
| 1602 | } |
| 1603 | } |
| 1604 | |
| 1605 | |
| 1606 | /* |
| 1607 | * Clock a series of bits through the MII. |
| 1608 | */ |
| 1609 | static void |
| 1610 | xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { |
| 1611 | int i; |
| 1612 | |
| 1613 | XE_SELECT_PAGE(2); |
| 1614 | XE_MII_CLR(XE_MII_CLK); |
| 1615 | |
| 1616 | for (i = (0x1 << (cnt - 1)); i; i >>= 1) { |
| 1617 | if (bits & i) { |
| 1618 | XE_MII_SET(XE_MII_WRD); |
| 1619 | } else { |
| 1620 | XE_MII_CLR(XE_MII_WRD); |
| 1621 | } |
| 1622 | DELAY(1); |
| 1623 | XE_MII_CLR(XE_MII_CLK); |
| 1624 | DELAY(1); |
| 1625 | XE_MII_SET(XE_MII_CLK); |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | |
| 1630 | /* |
| 1631 | * Read an PHY register through the MII. |
| 1632 | */ |
| 1633 | static int |
| 1634 | xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { |
| 1635 | int i, ack; |
| 1636 | |
| 1637 | crit_enter(); |
| 1638 | |
| 1639 | /* |
| 1640 | * Set up frame for RX. |
| 1641 | */ |
| 1642 | frame->mii_stdelim = XE_MII_STARTDELIM; |
| 1643 | frame->mii_opcode = XE_MII_READOP; |
| 1644 | frame->mii_turnaround = 0; |
| 1645 | frame->mii_data = 0; |
| 1646 | |
| 1647 | XE_SELECT_PAGE(2); |
| 1648 | XE_OUTB(XE_GPR2, 0); |
| 1649 | |
| 1650 | /* |
| 1651 | * Turn on data xmit. |
| 1652 | */ |
| 1653 | XE_MII_SET(XE_MII_DIR); |
| 1654 | |
| 1655 | xe_mii_sync(scp); |
| 1656 | |
| 1657 | /* |
| 1658 | * Send command/address info. |
| 1659 | */ |
| 1660 | xe_mii_send(scp, frame->mii_stdelim, 2); |
| 1661 | xe_mii_send(scp, frame->mii_opcode, 2); |
| 1662 | xe_mii_send(scp, frame->mii_phyaddr, 5); |
| 1663 | xe_mii_send(scp, frame->mii_regaddr, 5); |
| 1664 | |
| 1665 | /* Idle bit */ |
| 1666 | XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); |
| 1667 | DELAY(1); |
| 1668 | XE_MII_SET(XE_MII_CLK); |
| 1669 | DELAY(1); |
| 1670 | |
| 1671 | /* Turn off xmit. */ |
| 1672 | XE_MII_CLR(XE_MII_DIR); |
| 1673 | |
| 1674 | /* Check for ack */ |
| 1675 | XE_MII_CLR(XE_MII_CLK); |
| 1676 | DELAY(1); |
| 1677 | ack = XE_INB(XE_GPR2) & XE_MII_RDD; |
| 1678 | XE_MII_SET(XE_MII_CLK); |
| 1679 | DELAY(1); |
| 1680 | |
| 1681 | /* |
| 1682 | * Now try reading data bits. If the ack failed, we still |
| 1683 | * need to clock through 16 cycles to keep the PHY(s) in sync. |
| 1684 | */ |
| 1685 | if (ack) { |
| 1686 | for(i = 0; i < 16; i++) { |
| 1687 | XE_MII_CLR(XE_MII_CLK); |
| 1688 | DELAY(1); |
| 1689 | XE_MII_SET(XE_MII_CLK); |
| 1690 | DELAY(1); |
| 1691 | } |
| 1692 | goto fail; |
| 1693 | } |
| 1694 | |
| 1695 | for (i = 0x8000; i; i >>= 1) { |
| 1696 | XE_MII_CLR(XE_MII_CLK); |
| 1697 | DELAY(1); |
| 1698 | if (!ack) { |
| 1699 | if (XE_INB(XE_GPR2) & XE_MII_RDD) |
| 1700 | frame->mii_data |= i; |
| 1701 | DELAY(1); |
| 1702 | } |
| 1703 | XE_MII_SET(XE_MII_CLK); |
| 1704 | DELAY(1); |
| 1705 | } |
| 1706 | |
| 1707 | fail: |
| 1708 | |
| 1709 | XE_MII_CLR(XE_MII_CLK); |
| 1710 | DELAY(1); |
| 1711 | XE_MII_SET(XE_MII_CLK); |
| 1712 | DELAY(1); |
| 1713 | |
| 1714 | crit_exit(); |
| 1715 | |
| 1716 | if (ack) |
| 1717 | return(1); |
| 1718 | return(0); |
| 1719 | } |
| 1720 | |
| 1721 | |
| 1722 | /* |
| 1723 | * Write to a PHY register through the MII. |
| 1724 | */ |
| 1725 | static int |
| 1726 | xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { |
| 1727 | |
| 1728 | crit_enter(); |
| 1729 | |
| 1730 | /* |
| 1731 | * Set up frame for TX. |
| 1732 | */ |
| 1733 | frame->mii_stdelim = XE_MII_STARTDELIM; |
| 1734 | frame->mii_opcode = XE_MII_WRITEOP; |
| 1735 | frame->mii_turnaround = XE_MII_TURNAROUND; |
| 1736 | |
| 1737 | XE_SELECT_PAGE(2); |
| 1738 | |
| 1739 | /* |
| 1740 | * Turn on data output. |
| 1741 | */ |
| 1742 | XE_MII_SET(XE_MII_DIR); |
| 1743 | |
| 1744 | xe_mii_sync(scp); |
| 1745 | |
| 1746 | xe_mii_send(scp, frame->mii_stdelim, 2); |
| 1747 | xe_mii_send(scp, frame->mii_opcode, 2); |
| 1748 | xe_mii_send(scp, frame->mii_phyaddr, 5); |
| 1749 | xe_mii_send(scp, frame->mii_regaddr, 5); |
| 1750 | xe_mii_send(scp, frame->mii_turnaround, 2); |
| 1751 | xe_mii_send(scp, frame->mii_data, 16); |
| 1752 | |
| 1753 | /* Idle bit. */ |
| 1754 | XE_MII_SET(XE_MII_CLK); |
| 1755 | DELAY(1); |
| 1756 | XE_MII_CLR(XE_MII_CLK); |
| 1757 | DELAY(1); |
| 1758 | |
| 1759 | /* |
| 1760 | * Turn off xmit. |
| 1761 | */ |
| 1762 | XE_MII_CLR(XE_MII_DIR); |
| 1763 | |
| 1764 | crit_exit(); |
| 1765 | |
| 1766 | return(0); |
| 1767 | } |
| 1768 | |
| 1769 | |
| 1770 | /* |
| 1771 | * Read a register from the PHY. |
| 1772 | */ |
| 1773 | static u_int16_t |
| 1774 | xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { |
| 1775 | struct xe_mii_frame frame; |
| 1776 | |
| 1777 | bzero((char *)&frame, sizeof(frame)); |
| 1778 | |
| 1779 | frame.mii_phyaddr = 0; |
| 1780 | frame.mii_regaddr = reg; |
| 1781 | xe_mii_readreg(scp, &frame); |
| 1782 | |
| 1783 | return(frame.mii_data); |
| 1784 | } |
| 1785 | |
| 1786 | |
| 1787 | /* |
| 1788 | * Write to a PHY register. |
| 1789 | */ |
| 1790 | static void |
| 1791 | xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { |
| 1792 | struct xe_mii_frame frame; |
| 1793 | |
| 1794 | bzero((char *)&frame, sizeof(frame)); |
| 1795 | |
| 1796 | frame.mii_phyaddr = 0; |
| 1797 | frame.mii_regaddr = reg; |
| 1798 | frame.mii_data = data; |
| 1799 | xe_mii_writereg(scp, &frame); |
| 1800 | |
| 1801 | return; |
| 1802 | } |
| 1803 | |
| 1804 | |
| 1805 | #ifdef XE_DEBUG |
| 1806 | /* |
| 1807 | * A bit of debugging code. |
| 1808 | */ |
| 1809 | static void |
| 1810 | xe_mii_dump(struct xe_softc *scp) { |
| 1811 | int i; |
| 1812 | |
| 1813 | crit_enter(); |
| 1814 | |
| 1815 | if_printf(scp->ifp, "MII registers: "); |
| 1816 | for (i = 0; i < 2; i++) { |
| 1817 | printf(" %d:%04x", i, xe_phy_readreg(scp, i)); |
| 1818 | } |
| 1819 | for (i = 4; i < 7; i++) { |
| 1820 | printf(" %d:%04x", i, xe_phy_readreg(scp, i)); |
| 1821 | } |
| 1822 | printf("\n"); |
| 1823 | |
| 1824 | crit_exit(); |
| 1825 | } |
| 1826 | |
| 1827 | static void |
| 1828 | xe_reg_dump(struct xe_softc *scp) { |
| 1829 | int page, i; |
| 1830 | |
| 1831 | crit_enter(); |
| 1832 | |
| 1833 | if_printf(scp->ifp, "Common registers: "); |
| 1834 | for (i = 0; i < 8; i++) { |
| 1835 | printf(" %2.2x", XE_INB(i)); |
| 1836 | } |
| 1837 | printf("\n"); |
| 1838 | |
| 1839 | for (page = 0; page <= 8; page++) { |
| 1840 | if_printf(scp->ifp, "Register page %2.2x: ", page); |
| 1841 | XE_SELECT_PAGE(page); |
| 1842 | for (i = 8; i < 16; i++) { |
| 1843 | printf(" %2.2x", XE_INB(i)); |
| 1844 | } |
| 1845 | printf("\n"); |
| 1846 | } |
| 1847 | |
| 1848 | for (page = 0x10; page < 0x5f; page++) { |
| 1849 | if ((page >= 0x11 && page <= 0x3f) || |
| 1850 | (page == 0x41) || |
| 1851 | (page >= 0x43 && page <= 0x4f) || |
| 1852 | (page >= 0x59)) |
| 1853 | continue; |
| 1854 | if_printf(scp->ifp, "Register page %2.2x: ", page); |
| 1855 | XE_SELECT_PAGE(page); |
| 1856 | for (i = 8; i < 16; i++) { |
| 1857 | printf(" %2.2x", XE_INB(i)); |
| 1858 | } |
| 1859 | printf("\n"); |
| 1860 | } |
| 1861 | |
| 1862 | crit_exit(); |
| 1863 | } |
| 1864 | #endif |
| 1865 | |
| 1866 | int |
| 1867 | xe_activate(device_t dev) |
| 1868 | { |
| 1869 | struct xe_softc *sc = device_get_softc(dev); |
| 1870 | int start, err; |
| 1871 | |
| 1872 | if (!sc->dingo) { |
| 1873 | sc->port_rid = 0; /* 0 is managed by pccard */ |
| 1874 | sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, |
| 1875 | &sc->port_rid, 0, ~0, 16, RF_ACTIVE); |
| 1876 | } else { |
| 1877 | /* |
| 1878 | * Find a 16 byte aligned ioport for the card. |
| 1879 | */ |
| 1880 | #if XE_DEBUG > 0 |
| 1881 | device_printf(dev, "Finding an aligned port for RealPort\n"); |
| 1882 | #endif /* XE_DEBUG */ |
| 1883 | sc->port_rid = 1; /* 0 is managed by pccard */ |
| 1884 | start = 0x100; |
| 1885 | do { |
| 1886 | sc->port_res = bus_alloc_resource(dev, |
| 1887 | SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, |
| 1888 | RF_ACTIVE); |
| 1889 | if (sc->port_res == 0) |
| 1890 | break; /* we failed */ |
| 1891 | if ((rman_get_start(sc->port_res) & 0xf) == 0) |
| 1892 | break; /* good */ |
| 1893 | bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, |
| 1894 | sc->port_res); |
| 1895 | start = (rman_get_start(sc->port_res) + 15) & ~0xf; |
| 1896 | } while (1); |
| 1897 | #if XE_DEBUG > 2 |
| 1898 | device_printf(dev, "port 0x%0lx, size 0x%0lx\n", |
| 1899 | bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), |
| 1900 | bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); |
| 1901 | #endif /* XE_DEBUG */ |
| 1902 | } |
| 1903 | if (!sc->port_res) { |
| 1904 | #if XE_DEBUG > 0 |
| 1905 | device_printf(dev, "Cannot allocate ioport\n"); |
| 1906 | #endif |
| 1907 | return ENOMEM; |
| 1908 | } |
| 1909 | |
| 1910 | sc->irq_rid = 0; |
| 1911 | sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, |
| 1912 | RF_ACTIVE); |
| 1913 | if (!sc->irq_res) { |
| 1914 | #if XE_DEBUG > 0 |
| 1915 | device_printf(dev, "Cannot allocate irq\n"); |
| 1916 | #endif |
| 1917 | xe_deactivate(dev); |
| 1918 | return ENOMEM; |
| 1919 | } |
| 1920 | err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, |
| 1921 | &sc->intrhand, NULL); |
| 1922 | if (err) { |
| 1923 | ether_ifdetach(&sc->arpcom.ac_if); |
| 1924 | xe_deactivate(dev); |
| 1925 | return err; |
| 1926 | } |
| 1927 | |
| 1928 | sc->bst = rman_get_bustag(sc->port_res); |
| 1929 | sc->bsh = rman_get_bushandle(sc->port_res); |
| 1930 | return (0); |
| 1931 | } |
| 1932 | |
| 1933 | void |
| 1934 | xe_deactivate(device_t dev) |
| 1935 | { |
| 1936 | struct xe_softc *sc = device_get_softc(dev); |
| 1937 | |
| 1938 | if (sc->intrhand) |
| 1939 | bus_teardown_intr(dev, sc->irq_res, sc->intrhand); |
| 1940 | sc->intrhand = 0; |
| 1941 | if (sc->port_res) |
| 1942 | bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, |
| 1943 | sc->port_res); |
| 1944 | sc->port_res = 0; |
| 1945 | if (sc->irq_res) |
| 1946 | bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, |
| 1947 | sc->irq_res); |
| 1948 | sc->irq_res = 0; |
| 1949 | return; |
| 1950 | } |