/*- * Copyright (c) 1998, 1999 Scott Mitchell * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: if_xe.c,v 1.20 1999/06/13 19:17:40 scott Exp $ * $FreeBSD$ */ /* * XXX TODO XXX * * I've pushed this fairly far, but there are some things that need to be * done here. I'm documenting them here in case I get destracted. -- imp * * xe_cem56fix -- need to figure out how to map the extra stuff. */ /* * Portions of this software were derived from Werner Koch's xirc2ps driver * for Linux under the terms of the following license (from v1.30 of the * xirc2ps driver): * * Copyright (c) 1997 by Werner Koch (dd9jn) * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, and the entire permission notice in its entirety, * including the disclaimer of warranties. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The * following cards are currently known to work with the driver: * Xircom CreditCard 10/100 (CE3) * Xircom CreditCard Ethernet + Modem 28 (CEM28) * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56) * Xircom RealPort Ethernet 10 * Xircom RealPort Ethernet 10/100 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G) * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A) * Compaq Netelligent 10/100 PC Card (CPQ-10/100) * * Some other cards *should* work, but support for them is either broken or in * an unknown state at the moment. I'm always interested in hearing from * people who own any of these cards: * Xircom CreditCard 10Base-T (PS-CE2-10) * Xircom CreditCard Ethernet + ModemII (CEM2) * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?) * * Thanks to all who assisted with the development and testing of the driver, * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left * out anyone who deserves a mention here. * * Special thanks to Ade Lovett for both hosting the mailing list and doing * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting * the web pages. * * Contact points: * * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/ * * Mailing list: http://www.lovett.com/lists/freebsd-xircom/ * or send "subscribe freebsd-xircom" to * * Author email: */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * MII command structure */ struct xe_mii_frame { u_int8_t mii_stdelim; u_int8_t mii_opcode; u_int8_t mii_phyaddr; u_int8_t mii_regaddr; u_int8_t mii_turnaround; u_int16_t mii_data; }; /* * Media autonegotiation progress constants */ #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */ #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */ #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */ #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */ #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */ /* * Prototypes start here */ static void xe_init (void *xscp); static void xe_start (struct ifnet *ifp); static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data); static void xe_watchdog (struct ifnet *ifp); static int xe_media_change (struct ifnet *ifp); static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp); static timeout_t xe_setmedia; static void xe_hard_reset (struct xe_softc *scp); static void xe_soft_reset (struct xe_softc *scp); static void xe_stop (struct xe_softc *scp); static void xe_enable_intr (struct xe_softc *scp); static void xe_disable_intr (struct xe_softc *scp); static void xe_setmulti (struct xe_softc *scp); static void xe_setaddrs (struct xe_softc *scp); static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp); static u_int32_t xe_compute_crc (u_int8_t *data, int len) __unused; static int xe_compute_hashbit (u_int32_t crc) __unused; /* * MII functions */ static void xe_mii_sync (struct xe_softc *scp); static int xe_mii_init (struct xe_softc *scp); static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt); static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame); static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame); static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg); static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data); /* * Debug functions -- uncomment for VERY verbose dignostic information. * Set to 1 for less verbose information */ /* #define XE_DEBUG 2 */ #ifdef XE_DEBUG #define XE_REG_DUMP(scp) xe_reg_dump((scp)) #define XE_MII_DUMP(scp) xe_mii_dump((scp)) static void xe_reg_dump (struct xe_softc *scp); static void xe_mii_dump (struct xe_softc *scp); #else #define XE_REG_DUMP(scp) #define XE_MII_DUMP(scp) #endif /* * Attach a device. */ int xe_attach (device_t dev) { struct xe_softc *scp = device_get_softc(dev); #ifdef XE_DEBUG device_printf(dev, "attach\n"); #endif /* Fill in some private data */ scp->ifp = &scp->arpcom.ac_if; scp->ifm = &scp->ifmedia; scp->autoneg_status = 0; /* Hopefully safe to read this here */ XE_SELECT_PAGE(4); scp->version = XE_INB(XE_BOV); scp->dev = dev; /* Initialise the ifnet structure */ if (!scp->ifp->if_name) { scp->ifp->if_softc = scp; scp->ifp->if_name = "xe"; scp->ifp->if_unit = device_get_unit(dev); scp->ifp->if_timer = 0; scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); scp->ifp->if_linkmib = &scp->mibdata; scp->ifp->if_linkmiblen = sizeof scp->mibdata; scp->ifp->if_output = ether_output; scp->ifp->if_start = xe_start; scp->ifp->if_ioctl = xe_ioctl; scp->ifp->if_watchdog = xe_watchdog; scp->ifp->if_init = xe_init; scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; } /* Initialise the ifmedia structure */ ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status); callout_handle_init(&scp->chand); /* * Fill in supported media types. Some cards _do_ support full duplex * operation, but this driver doesn't, yet. Therefore we leave those modes * out of the list. We support some form of autoselection in all cases. */ if (scp->mohawk) { ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL); ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); } else { ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL); ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL); } ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL); /* Default is to autoselect best supported media type */ ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO); /* Print some useful information */ device_printf(dev, "%s %s, bonding version %#x%s%s\n", scp->vendor, scp->card_type, scp->version, scp->mohawk ? ", 100Mbps capable" : "", scp->modem ? ", with modem" : ""); if (scp->mohawk) { XE_SELECT_PAGE(0x10); device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n", XE_INW(XE_DINGOID), XE_INW(XE_RevID), XE_INW(XE_VendorID)); } if (scp->ce2) { XE_SELECT_PAGE(0x45); device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV)); } /* Print MAC address */ device_printf(dev, "Ethernet address %6D\n", scp->arpcom.ac_enaddr, ":"); /* Attach the interface */ ether_ifattach(scp->ifp, ETHER_BPF_SUPPORTED); /* Done */ return 0; } /* * Initialize device. Completes the reset procedure on the card and starts * output. If there's an autonegotiation in progress we DON'T do anything; * the media selection code will call us again when it's done. */ static void xe_init(void *xscp) { struct xe_softc *scp = xscp; int s; #ifdef XE_DEBUG device_printf(scp->dev, "init\n"); #endif if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return; /* Reset transmitter flags */ scp->tx_queued = 0; scp->tx_tpr = 0; scp->tx_collisions = 0; scp->ifp->if_timer = 0; s = splimp(); XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */ /* * Set the 'local memory dividing line' -- splits the 32K card memory into * 8K for transmit buffers and 24K for receive. This is done automatically * on newer revision cards. */ if (scp->srev != 1) { XE_SELECT_PAGE(2); XE_OUTW(XE_RBS, 0x2000); } /* Set up multicast addresses */ xe_setmulti(scp); /* Fix the data offset register -- reset leaves it off-by-one */ XE_SELECT_PAGE(0); XE_OUTW(XE_DO, 0x2000); /* * Set MAC interrupt masks and clear status regs. The bit names are direct * from the Linux code; I have no idea what most of them do. */ XE_SELECT_PAGE(0x40); /* Bit 7..0 */ XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */ XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */ XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */ XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */ XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */ /* * Check for an in-progress autonegotiation. If one is active, just set * IFF_RUNNING and return. The media selection code will call us again when * it's done. */ if (scp->autoneg_status) { scp->ifp->if_flags |= IFF_RUNNING; } else { /* Enable receiver, put MAC online */ XE_SELECT_PAGE(0x40); XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); /* Set up IMR, enable interrupts */ xe_enable_intr(scp); /* Attempt to start output */ scp->ifp->if_flags |= IFF_RUNNING; scp->ifp->if_flags &= ~IFF_OACTIVE; xe_start(scp->ifp); } (void)splx(s); } /* * Start output on interface. We make two assumptions here: * 1) that the current priority is set to splimp _before_ this code * is called *and* is returned to the appropriate priority after * return * 2) that the IFF_OACTIVE flag is checked before this code is called * (i.e. that the output part of the interface is idle) */ static void xe_start(struct ifnet *ifp) { struct xe_softc *scp = ifp->if_softc; struct mbuf *mbp; /* * Loop while there are packets to be sent, and space to send them. */ while (1) { IF_DEQUEUE(&ifp->if_snd, mbp); /* Suck a packet off the send queue */ if (mbp == NULL) { /* * We are using the !OACTIVE flag to indicate to the outside world that * we can accept an additional packet rather than that the transmitter * is _actually_ active. Indeed, the transmitter may be active, but if * we haven't filled all the buffers with data then we still want to * accept more. */ ifp->if_flags &= ~IFF_OACTIVE; return; } if (xe_pio_write_packet(scp, mbp) != 0) { IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */ ifp->if_flags |= IFF_OACTIVE; return; } /* Tap off here if there is a bpf listener */ if (ifp->if_bpf) { #if XE_DEBUG > 1 device_printf(scp->dev, "sending output packet to BPF\n"); #endif bpf_mtap(ifp, mbp); } ifp->if_timer = 5; /* In case we don't hear from the card again */ scp->tx_queued++; m_freem(mbp); } } /* * Process an ioctl request. Adapted from the ed driver. */ static int xe_ioctl (register struct ifnet *ifp, u_long command, caddr_t data) { struct xe_softc *scp; int s, error; scp = ifp->if_softc; error = 0; s = splimp(); switch (command) { case SIOCSIFADDR: case SIOCGIFADDR: case SIOCSIFMTU: error = ether_ioctl(ifp, command, data); break; case SIOCSIFFLAGS: /* * If the interface is marked up and stopped, then start it. If it is * marked down and running, then stop it. */ if (ifp->if_flags & IFF_UP) { if (!(ifp->if_flags & IFF_RUNNING)) { xe_hard_reset(scp); xe_setmedia(scp); xe_init(scp); } } else { if (ifp->if_flags & IFF_RUNNING) xe_stop(scp); } case SIOCADDMULTI: case SIOCDELMULTI: /* * Multicast list has (maybe) changed; set the hardware filter * accordingly. This also serves to deal with promiscuous mode if we have * a BPF listener active. */ xe_setmulti(scp); error = 0; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: /* * Someone wants to get/set media options. */ error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command); break; default: error = EINVAL; } (void)splx(s); return error; } /* * Card interrupt handler. * * This function is probably more complicated than it needs to be, as it * attempts to deal with the case where multiple packets get sent between * interrupts. This is especially annoying when working out the collision * stats. Not sure whether this case ever really happens or not (maybe on a * slow/heavily loaded machine?) so it's probably best to leave this like it * is. * * Note that the crappy PIO used to get packets on and off the card means that * you will spend a lot of time in this routine -- I can get my P150 to spend * 90% of its time servicing interrupts if I really hammer the network. Could * fix this, but then you'd start dropping/losing packets. The moral of this * story? If you want good network performance _and_ some cycles left over to * get your work done, don't buy a Xircom card. Or convince them to tell me * how to do memory-mapped I/O :) */ static void xe_intr(void *xscp) { struct xe_softc *scp = (struct xe_softc *) xscp; struct ifnet *ifp; int result; u_int16_t rx_bytes, rxs, txs; u_int8_t psr, isr, esr, rsr; ifp = &scp->arpcom.ac_if; rx_bytes = 0; /* Bytes received on this interrupt */ result = 0; /* Set true if the interrupt is for us */ if (scp->mohawk) { XE_OUTB(XE_CR, 0); /* Disable interrupts */ } psr = XE_INB(XE_PR); /* Stash the current register page */ /* * Read ISR to see what caused this interrupt. Note that this clears the * ISR on CE2 type cards. */ if ((isr = XE_INB(XE_ISR)) && isr != 0xff) { result = 1; /* This device did generate an int */ esr = XE_INB(XE_ESR); /* Read the other status registers */ XE_SELECT_PAGE(0x40); rxs = XE_INB(XE_RST0); XE_OUTB(XE_RST0, ~rxs & 0xff); txs = XE_INB(XE_TXST0); txs |= XE_INB(XE_TXST1) << 8; XE_OUTB(XE_TXST0, 0); XE_OUTB(XE_TXST1, 0); XE_SELECT_PAGE(0); #if XE_DEBUG > 2 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs); #endif /* * Handle transmit interrupts */ if (isr & XE_ISR_TX_PACKET) { u_int8_t new_tpr, sent; if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */ sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */ else sent = new_tpr - scp->tx_tpr; if (sent > 0) { /* Packets sent since last interrupt */ scp->tx_tpr = new_tpr; scp->tx_queued -= sent; ifp->if_opackets += sent; ifp->if_collisions += scp->tx_collisions; /* * Collision stats are a PITA. If multiples frames have been sent, we * distribute any outstanding collision count equally amongst them. * However, if we're missing interrupts we're quite likely to also * miss some collisions; thus the total count will be off anyway. * Likewise, if we miss a frame dropped due to excessive collisions * any outstanding collisions count will be held against the next * frame to be successfully sent. Hopefully it averages out in the * end! * XXX - This will screw up if tx_collisions/sent > 14. FIX IT! */ switch (scp->tx_collisions) { case 0: break; case 1: scp->mibdata.dot3StatsSingleCollisionFrames++; scp->mibdata.dot3StatsCollFrequencies[0]++; break; default: if (sent == 1) { scp->mibdata.dot3StatsMultipleCollisionFrames++; scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++; } else { /* Distribute across multiple frames */ scp->mibdata.dot3StatsMultipleCollisionFrames += sent; scp->mibdata. dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent; scp->mibdata. dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent; } } scp->tx_collisions = 0; } ifp->if_timer = 0; ifp->if_flags &= ~IFF_OACTIVE; } if (txs & 0x0002) { /* Excessive collisions (packet dropped) */ ifp->if_collisions += 16; ifp->if_oerrors++; scp->tx_collisions = 0; scp->mibdata.dot3StatsExcessiveCollisions++; scp->mibdata.dot3StatsMultipleCollisionFrames++; scp->mibdata.dot3StatsCollFrequencies[15]++; XE_OUTB(XE_CR, XE_CR_RESTART_TX); } if (txs & 0x0040) /* Transmit aborted -- probably collisions */ scp->tx_collisions++; /* * Handle receive interrupts */ while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) { if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) { struct ether_header *ehp; struct mbuf *mbp; u_int16_t len; len = XE_INW(XE_RBC); if (len == 0) continue; #if 0 /* * Limit the amount of time we spend in this loop, dropping packets if * necessary. The Linux code does this with considerably more * finesse, adjusting the threshold dynamically. */ if ((rx_bytes += len) > 22000) { ifp->if_iqdrops++; scp->mibData.dot3StatsMissedFrames++; XE_OUTW(XE_DO, 0x8000); continue; } #endif if (len & 0x01) len++; MGETHDR(mbp, M_DONTWAIT, MT_DATA); /* Allocate a header mbuf */ if (mbp != NULL) { mbp->m_pkthdr.rcvif = ifp; mbp->m_pkthdr.len = mbp->m_len = len; /* * If the mbuf header isn't big enough for the packet, attach an * mbuf cluster to hold it. The +2 is to allow for the nasty little * alignment hack below. */ if (len + 2 > MHLEN) { MCLGET(mbp, M_DONTWAIT); if ((mbp->m_flags & M_EXT) == 0) { m_freem(mbp); mbp = NULL; } } } if (mbp != NULL) { /* * The Ethernet header is 14 bytes long; thus the actual packet data * won't be 32-bit aligned when it's dumped into the mbuf. We * offset everything by 2 bytes to fix this. Apparently the * alignment is important for NFS, damn its eyes. */ mbp->m_data += 2; ehp = mtod(mbp, struct ether_header *); /* * Now get the packet, including the Ethernet header and trailer (?) * We use programmed I/O, because we don't know how to do shared * memory with these cards. So yes, it's real slow, and heavy on * the interrupts (CPU on my P150 maxed out at ~950KBps incoming). */ if (scp->srev == 0) { /* Workaround a bug in old cards */ u_short rhs; XE_SELECT_PAGE(5); rhs = XE_INW(XE_RHSA); XE_SELECT_PAGE(0); rhs += 3; /* Skip control info */ if (rhs >= 0x8000) rhs = 0; if (rhs + len > 0x8000) { int i; /* * XXX - This i-- seems very wrong, but it's what the Linux guys * XXX - do. Need someone with an old CE2 to test this for me. * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll * XXX - fix it? It seems as though the previous version would * XXX - have caused an infinite loop (what, another one?). */ for (i = 0; i < len; i++, rhs++) { ((char *)ehp)[i] = XE_INB(XE_EDP); if (rhs == 0x8000) { rhs = 0; i--; } } } else bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) ehp, len >> 1); } else bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) ehp, len >> 1); /* Deliver packet to upper layers */ if (mbp != NULL) { mbp->m_pkthdr.len = mbp->m_len = len - ETHER_HDR_LEN; mbp->m_data += ETHER_HDR_LEN; /* Strip off Ethernet header */ ether_input(ifp, ehp, mbp); /* Send the packet on its way */ ifp->if_ipackets++; /* Success! */ } XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */ } } else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */ scp->mibdata.dot3StatsFrameTooLongs++; ifp->if_ierrors++; } else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */ scp->mibdata.dot3StatsFCSErrors++; ifp->if_ierrors++; } else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */ scp->mibdata.dot3StatsAlignmentErrors++; ifp->if_ierrors++; } } if (rxs & 0x10) { /* Receiver overrun */ scp->mibdata.dot3StatsInternalMacReceiveErrors++; ifp->if_ierrors++; XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN); } } XE_SELECT_PAGE(psr); /* Restore saved page */ XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */ /* Could force an int here, instead of dropping packets? */ /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */ return; } /* * Device timeout/watchdog routine. Called automatically if we queue a packet * for transmission but don't get an interrupt within a specified timeout * (usually 5 seconds). When this happens we assume the worst and reset the * card. */ static void xe_watchdog(struct ifnet *ifp) { struct xe_softc *scp = ifp->if_softc; device_printf(scp->dev, "watchdog timeout; resetting card\n"); scp->tx_timeouts++; ifp->if_oerrors += scp->tx_queued; xe_stop(scp); xe_hard_reset(scp); xe_setmedia(scp); xe_init(scp); } /* * Change media selection. */ static int xe_media_change(struct ifnet *ifp) { struct xe_softc *scp = ifp->if_softc; #ifdef XE_DEBUG if_printf(ifp, "media_change\n"); #endif if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) return(EINVAL); /* * Some card/media combos aren't always possible -- filter those out here. */ if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO || IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) return (EINVAL); xe_setmedia(scp); return 0; } /* * Return current media selection. */ static void xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) { #ifdef XE_DEBUG if_printf(ifp, "media_status\n"); #endif mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media; return; } /* * Select active media. */ static void xe_setmedia(void *xscp) { struct xe_softc *scp = xscp; u_int16_t bmcr, bmsr, anar, lpar; #ifdef XE_DEBUG device_printf(scp->dev, "setmedia\n"); #endif /* Cancel any pending timeout */ untimeout(xe_setmedia, scp, scp->chand); xe_disable_intr(scp); /* Select media */ scp->media = IFM_ETHER; switch (IFM_SUBTYPE(scp->ifm->ifm_media)) { case IFM_AUTO: /* Autoselect media */ scp->media = IFM_ETHER|IFM_AUTO; /* * Autoselection is really awful. It goes something like this: * * Wait until the transmitter goes idle (2sec timeout). * Reset card * IF a 100Mbit PHY exists * Start NWAY autonegotiation (3.5sec timeout) * IF that succeeds * Select 100baseTX or 10baseT, whichever was detected * ELSE * Reset card * IF a 100Mbit PHY exists * Try to force a 100baseTX link (3sec timeout) * IF that succeeds * Select 100baseTX * ELSE * Disable the PHY * ENDIF * ENDIF * ENDIF * ENDIF * IF nothing selected so far * IF a 100Mbit PHY exists * Select 10baseT * ELSE * Select 10baseT or 10base2, whichever is connected * ENDIF * ENDIF */ switch (scp->autoneg_status) { case XE_AUTONEG_NONE: #if XE_DEBUG > 1 device_printf(scp->dev, "Waiting for idle transmitter\n"); #endif scp->arpcom.ac_if.if_flags |= IFF_OACTIVE; scp->autoneg_status = XE_AUTONEG_WAITING; scp->chand = timeout(xe_setmedia, scp, hz * 2); return; case XE_AUTONEG_WAITING: xe_soft_reset(scp); if (scp->phy_ok) { #if XE_DEBUG > 1 device_printf(scp->dev, "Starting autonegotiation\n"); #endif bmcr = xe_phy_readreg(scp, PHY_BMCR); bmcr &= ~(PHY_BMCR_AUTONEGENBL); xe_phy_writereg(scp, PHY_BMCR, bmcr); anar = xe_phy_readreg(scp, PHY_ANAR); anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL); anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF; xe_phy_writereg(scp, PHY_ANAR, anar); bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; xe_phy_writereg(scp, PHY_BMCR, bmcr); scp->autoneg_status = XE_AUTONEG_STARTED; scp->chand = timeout(xe_setmedia, scp, hz * 7/2); return; } else { scp->autoneg_status = XE_AUTONEG_FAIL; } break; case XE_AUTONEG_STARTED: bmsr = xe_phy_readreg(scp, PHY_BMSR); lpar = xe_phy_readreg(scp, PHY_LPAR); if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) { #if XE_DEBUG > 1 device_printf(scp->dev, "Autonegotiation complete!\n"); #endif /* * XXX - Shouldn't have to do this, but (on my hub at least) the * XXX - transmitter won't work after a successful autoneg. So we see * XXX - what the negotiation result was and force that mode. I'm * XXX - sure there is an easy fix for this. */ if (lpar & PHY_LPAR_100BTXHALF) { xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); XE_MII_DUMP(scp); XE_SELECT_PAGE(2); XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); scp->media = IFM_ETHER|IFM_100_TX; scp->autoneg_status = XE_AUTONEG_NONE; } else { /* * XXX - Bit of a hack going on in here. * XXX - This is derived from Ken Hughes patch to the Linux driver * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B * XXX - cards. What's a CE3B and how's it differ from a plain CE3? * XXX - these are the things we need to find out. */ xe_phy_writereg(scp, PHY_BMCR, 0x0000); XE_SELECT_PAGE(2); /* BEGIN HACK */ XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0x80); scp->media = IFM_ETHER|IFM_10_T; scp->autoneg_status = XE_AUTONEG_NONE; /* END HACK */ /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */ /*scp->autoneg_status = XE_AUTONEG_FAIL;*/ } } else { #if XE_DEBUG > 1 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n"); #endif XE_MII_DUMP(scp); xe_soft_reset(scp); if (scp->phy_ok) { xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); scp->autoneg_status = XE_AUTONEG_100TX; scp->chand = timeout(xe_setmedia, scp, hz * 3); return; } else { scp->autoneg_status = XE_AUTONEG_FAIL; } } break; case XE_AUTONEG_100TX: (void)xe_phy_readreg(scp, PHY_BMSR); bmsr = xe_phy_readreg(scp, PHY_BMSR); if (bmsr & PHY_BMSR_LINKSTAT) { #if XE_DEBUG > 1 device_printf(scp->dev, "Got 100baseTX link!\n"); #endif XE_MII_DUMP(scp); XE_SELECT_PAGE(2); XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); scp->media = IFM_ETHER|IFM_100_TX; scp->autoneg_status = XE_AUTONEG_NONE; } else { #if XE_DEBUG > 1 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n"); #endif XE_MII_DUMP(scp); xe_phy_writereg(scp, PHY_BMCR, 0x0000); XE_SELECT_PAGE(2); XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */ scp->autoneg_status = XE_AUTONEG_FAIL; } break; } /* * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then * either autonegotiation failed, or never got started to begin with. In * either case, select a suitable 10Mbit media and hope it works. We * don't need to reset the card again, since it will have been done * already by the big switch above. */ if (scp->autoneg_status == XE_AUTONEG_FAIL) { #if XE_DEBUG > 1 device_printf(scp->dev, "Selecting 10baseX\n"); #endif if (scp->mohawk) { XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0x80); scp->media = IFM_ETHER|IFM_10_T; scp->autoneg_status = XE_AUTONEG_NONE; } else { XE_SELECT_PAGE(4); XE_OUTB(XE_GPR0, 4); DELAY(50000); XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0); scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2); scp->autoneg_status = XE_AUTONEG_NONE; } } break; /* * If a specific media has been requested, we just reset the card and * select it (one small exception -- if 100baseTX is requested by there is * no PHY, we fall back to 10baseT operation). */ case IFM_100_TX: /* Force 100baseTX */ xe_soft_reset(scp); if (scp->phy_ok) { #if XE_DEBUG > 1 device_printf(scp->dev, "Selecting 100baseTX\n"); #endif XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0); xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL); XE_SELECT_PAGE(2); XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08); scp->media |= IFM_100_TX; break; } /* FALLTHROUGH */ case IFM_10_T: /* Force 10baseT */ xe_soft_reset(scp); #if XE_DEBUG > 1 device_printf(scp->dev, "Selecting 10baseT\n"); #endif if (scp->phy_ok) { xe_phy_writereg(scp, PHY_BMCR, 0x0000); XE_SELECT_PAGE(2); XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */ } XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0x80); scp->media |= IFM_10_T; break; case IFM_10_2: xe_soft_reset(scp); #if XE_DEBUG > 1 device_printf(scp->dev, "Selecting 10base2\n"); #endif XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0xc0); scp->media |= IFM_10_2; break; } /* * Finally, the LEDs are set to match whatever media was chosen and the * transmitter is unblocked. */ #if XE_DEBUG > 1 device_printf(scp->dev, "Setting LEDs\n"); #endif XE_SELECT_PAGE(2); switch (IFM_SUBTYPE(scp->media)) { case IFM_100_TX: case IFM_10_T: XE_OUTB(XE_LED, 0x3b); if (scp->dingo) XE_OUTB(0x0b, 0x04); /* 100Mbit LED */ break; case IFM_10_2: XE_OUTB(XE_LED, 0x3a); break; } /* Restart output? */ scp->ifp->if_flags &= ~IFF_OACTIVE; xe_init(scp); } /* * Hard reset (power cycle) the card. */ static void xe_hard_reset(struct xe_softc *scp) { int s; #ifdef XE_DEBUG device_printf(scp->dev, "hard_reset\n"); #endif s = splimp(); /* * Power cycle the card. */ XE_SELECT_PAGE(4); XE_OUTB(XE_GPR1, 0); /* Power off */ DELAY(40000); if (scp->mohawk) XE_OUTB(XE_GPR1, 1); /* And back on again */ else XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */ DELAY(40000); XE_SELECT_PAGE(0); (void)splx(s); } /* * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller * are powered up, sets the silicon revision number in softc, disables * interrupts and checks for the prescence of a 100Mbit PHY. This should * leave us in a position where we can access the PHY and do media * selection. The function imposes a 0.5s delay while the hardware powers up. */ static void xe_soft_reset(struct xe_softc *scp) { int s; #ifdef XE_DEBUG device_printf(scp->dev, "soft_reset\n"); #endif s = splimp(); /* * Reset the card, (again). */ XE_SELECT_PAGE(0); XE_OUTB(XE_CR, XE_CR_SOFT_RESET); DELAY(40000); XE_OUTB(XE_CR, 0); DELAY(40000); if (scp->mohawk) { /* * set GP1 and GP2 as outputs (bits 2 & 3) * set GP1 low to power on the ML6692 (bit 0) * set GP2 high to power on the 10Mhz chip (bit 1) */ XE_SELECT_PAGE(4); XE_OUTB(XE_GPR0, 0x0e); } /* * Wait for everything to wake up. */ DELAY(500000); /* * Get silicon revision number. */ XE_SELECT_PAGE(4); if (scp->mohawk) scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4; else scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4; #ifdef XE_DEBUG device_printf(scp->dev, "silicon revision = %d\n", scp->srev); #endif /* * Shut off interrupts. */ xe_disable_intr(scp); /* * Check for PHY. */ if (scp->mohawk) { scp->phy_ok = xe_mii_init(scp); } XE_SELECT_PAGE(0); (void)splx(s); } /* * Take interface offline. This is done by powering down the device, which I * assume means just shutting down the transceiver and Ethernet logic. This * requires a _hard_ reset to recover from, as we need to power up again. */ static void xe_stop(struct xe_softc *scp) { int s; #ifdef XE_DEBUG device_printf(scp->dev, "stop\n"); #endif s = splimp(); /* * Shut off interrupts. */ xe_disable_intr(scp); /* * Power down. */ XE_SELECT_PAGE(4); XE_OUTB(XE_GPR1, 0); XE_SELECT_PAGE(0); /* * ~IFF_RUNNING == interface down. */ scp->ifp->if_flags &= ~IFF_RUNNING; scp->ifp->if_flags &= ~IFF_OACTIVE; scp->ifp->if_timer = 0; (void)splx(s); } /* * Enable Ethernet interrupts from the card. */ static void xe_enable_intr(struct xe_softc *scp) { #ifdef XE_DEBUG device_printf(scp->dev, "enable_intr\n"); #endif XE_SELECT_PAGE(1); XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */ XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */ DELAY(1); XE_SELECT_PAGE(0); XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */ if (scp->modem && !scp->dingo) { /* This bit is just magic */ if (!(XE_INB(0x10) & 0x01)) { XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */ } } } /* * Disable all Ethernet interrupts from the card. */ static void xe_disable_intr(struct xe_softc *scp) { #ifdef XE_DEBUG device_printf(scp->dev, "disable_intr\n"); #endif XE_SELECT_PAGE(0); XE_OUTB(XE_CR, 0); /* Disable interrupts */ if (scp->modem && !scp->dingo) { /* More magic (does this work?) */ XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */ } XE_SELECT_PAGE(1); XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */ XE_OUTB(XE_IMR1, 0); XE_SELECT_PAGE(0); } /* * Set up multicast filter and promiscuous mode */ static void xe_setmulti(struct xe_softc *scp) { struct ifnet *ifp; struct ifmultiaddr *maddr; int count; ifp = &scp->arpcom.ac_if; maddr = TAILQ_FIRST(&ifp->if_multiaddrs); /* Get length of multicast list */ for (count = 0; maddr != NULL; maddr = TAILQ_NEXT(maddr, ifma_link), count++); if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) { /* * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are * set, or if we have been asked to deal with more than 9 multicast * addresses. To do this: set MPE and PME in SWC1 */ XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0x06); } else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) { /* * Program the filters for up to 9 addresses */ XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0x01); XE_SELECT_PAGE(0x40); XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE); /*xe_reg_dump(scp);*/ xe_setaddrs(scp); /*xe_reg_dump(scp);*/ XE_SELECT_PAGE(0x40); XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE); } else { /* * No multicast operation (default) */ XE_SELECT_PAGE(0x42); XE_OUTB(XE_SWC1, 0); } XE_SELECT_PAGE(0); } /* * Set up all on-chip addresses (for multicast). AFAICS, there are 10 * of these things; the first is our MAC address, the other 9 are mcast * addresses, padded with the MAC address if there aren't enough. * XXX - This doesn't work right, but I'm not sure why yet. We seem to be * XXX - doing much the same as the Linux code, which is weird enough that * XXX - it's probably right (despite my earlier comments to the contrary). */ static void xe_setaddrs(struct xe_softc *scp) { struct ifmultiaddr *maddr; u_int8_t *addr; u_int8_t page, slot, byte, i; maddr = TAILQ_FIRST(&scp->arpcom.ac_if.if_multiaddrs); XE_SELECT_PAGE(page = 0x50); for (slot = 0, byte = 8; slot < 10; slot++) { if (slot == 0) addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); else { while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK) maddr = TAILQ_NEXT(maddr, ifma_link); if (maddr != NULL) addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr); else addr = (u_int8_t *)(&scp->arpcom.ac_enaddr); } for (i = 0; i < 6; i++, byte++) { #if XE_DEBUG > 2 if (i) printf(":%x", addr[i]); else device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]); #endif if (byte > 15) { page++; byte = 8; XE_SELECT_PAGE(page); } if (scp->mohawk) XE_OUTB(byte, addr[5 - i]); else XE_OUTB(byte, addr[i]); } #if XE_DEBUG > 2 printf("\n"); #endif } XE_SELECT_PAGE(0); } /* * Write an outgoing packet to the card using programmed I/O. */ static int xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) { struct mbuf *mbp2; u_int16_t len, pad, free, ok; u_int8_t *data; u_int8_t savebyte[2], wantbyte; /* Get total packet length */ for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next); /* Packets < minimum length may need to be padded out */ pad = 0; if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1; len = ETHER_MIN_LEN - ETHER_CRC_LEN; } /* Check transmit buffer space */ XE_SELECT_PAGE(0); XE_OUTW(XE_TRS, len+2); free = XE_INW(XE_TSO); ok = free & 0x8000; free &= 0x7fff; if (free <= len + 2) return 1; /* Send packet length to card */ XE_OUTW(XE_EDP, len); /* * Write packet to card using PIO (code stolen from the ed driver) */ wantbyte = 0; while (mbp != NULL) { len = mbp->m_len; if (len > 0) { data = mtod(mbp, caddr_t); if (wantbyte) { /* Finish the last word */ savebyte[1] = *data; XE_OUTW(XE_EDP, *(u_short *)savebyte); data++; len--; wantbyte = 0; } if (len > 1) { /* Output contiguous words */ bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data, len >> 1); data += len & ~1; len &= 1; } if (len == 1) { /* Save last byte, if necessary */ savebyte[0] = *data; wantbyte = 1; } } mbp = mbp->m_next; } if (wantbyte) /* Last byte for odd-length packets */ XE_OUTW(XE_EDP, *(u_short *)savebyte); /* * For CE3 cards, just tell 'em to send -- apparently the card will pad out * short packets with random cruft. Otherwise, write nonsense words to fill * out the packet. I guess it is then sent automatically (?) */ if (scp->mohawk) XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR); else while (pad > 0) { XE_OUTW(XE_EDP, 0xdead); pad--; } return 0; } /* * Compute the 32-bit Ethernet CRC for the given buffer. */ static u_int32_t xe_compute_crc(u_int8_t *data, int len) { u_int32_t crc = 0xffffffff; u_int32_t poly = 0x04c11db6; u_int8_t current, crc31, bit; int i, k; for (i = 0; i < len; i++) { current = data[i]; for (k = 1; k <= 8; k++) { if (crc & 0x80000000) { crc31 = 0x01; } else { crc31 = 0; } bit = crc31 ^ (current & 0x01); crc <<= 1; current >>= 1; if (bit) { crc = (crc ^ poly)|1; } } } return crc; } /* * Convert a CRC into an index into the multicast hash table. What we do is * take the most-significant 6 bits of the CRC, reverse them, and use that as * the bit number in the hash table. Bits 5:3 of the result give the byte * within the table (0-7); bits 2:0 give the bit number within that byte (also * 0-7), ie. the number of shifts needed to get it into the lsb position. */ static int xe_compute_hashbit(u_int32_t crc) { u_int8_t hashbit = 0; int i; for (i = 0; i < 6; i++) { hashbit >>= 1; if (crc & 0x80000000) { hashbit &= 0x80; } crc <<= 1; } return (hashbit >> 2); } /************************************************************** * * * M I I F U N C T I O N S * * * **************************************************************/ /* * Alternative MII/PHY handling code adapted from the xl driver. It doesn't * seem to work any better than the xirc2_ps stuff, but it's cleaner code. * XXX - this stuff shouldn't be here. It should all be abstracted off to * XXX - some kind of common MII-handling code, shared by all drivers. But * XXX - that's a whole other mission. */ #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x)) #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x)) /* * Sync the PHYs by setting data bit and strobing the clock 32 times. */ static void xe_mii_sync(struct xe_softc *scp) { register int i; XE_SELECT_PAGE(2); XE_MII_SET(XE_MII_DIR|XE_MII_WRD); for (i = 0; i < 32; i++) { XE_MII_SET(XE_MII_CLK); DELAY(1); XE_MII_CLR(XE_MII_CLK); DELAY(1); } } /* * Look for a MII-compliant PHY. If we find one, reset it. */ static int xe_mii_init(struct xe_softc *scp) { u_int16_t status; status = xe_phy_readreg(scp, PHY_BMSR); if ((status & 0xff00) != 0x7800) { #if XE_DEBUG > 1 device_printf(scp->dev, "no PHY found, %0x\n", status); #endif return 0; } else { #if XE_DEBUG > 1 device_printf(scp->dev, "PHY OK!\n"); #endif /* Reset the PHY */ xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET); DELAY(500); while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET); XE_MII_DUMP(scp); return 1; } } /* * Clock a series of bits through the MII. */ static void xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) { int i; XE_SELECT_PAGE(2); XE_MII_CLR(XE_MII_CLK); for (i = (0x1 << (cnt - 1)); i; i >>= 1) { if (bits & i) { XE_MII_SET(XE_MII_WRD); } else { XE_MII_CLR(XE_MII_WRD); } DELAY(1); XE_MII_CLR(XE_MII_CLK); DELAY(1); XE_MII_SET(XE_MII_CLK); } } /* * Read an PHY register through the MII. */ static int xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) { int i, ack, s; s = splimp(); /* * Set up frame for RX. */ frame->mii_stdelim = XE_MII_STARTDELIM; frame->mii_opcode = XE_MII_READOP; frame->mii_turnaround = 0; frame->mii_data = 0; XE_SELECT_PAGE(2); XE_OUTB(XE_GPR2, 0); /* * Turn on data xmit. */ XE_MII_SET(XE_MII_DIR); xe_mii_sync(scp); /* * Send command/address info. */ xe_mii_send(scp, frame->mii_stdelim, 2); xe_mii_send(scp, frame->mii_opcode, 2); xe_mii_send(scp, frame->mii_phyaddr, 5); xe_mii_send(scp, frame->mii_regaddr, 5); /* Idle bit */ XE_MII_CLR((XE_MII_CLK|XE_MII_WRD)); DELAY(1); XE_MII_SET(XE_MII_CLK); DELAY(1); /* Turn off xmit. */ XE_MII_CLR(XE_MII_DIR); /* Check for ack */ XE_MII_CLR(XE_MII_CLK); DELAY(1); XE_MII_SET(XE_MII_CLK); DELAY(1); ack = XE_INB(XE_GPR2) & XE_MII_RDD; /* * Now try reading data bits. If the ack failed, we still * need to clock through 16 cycles to keep the PHY(s) in sync. */ if (ack) { for(i = 0; i < 16; i++) { XE_MII_CLR(XE_MII_CLK); DELAY(1); XE_MII_SET(XE_MII_CLK); DELAY(1); } goto fail; } for (i = 0x8000; i; i >>= 1) { XE_MII_CLR(XE_MII_CLK); DELAY(1); if (!ack) { if (XE_INB(XE_GPR2) & XE_MII_RDD) frame->mii_data |= i; DELAY(1); } XE_MII_SET(XE_MII_CLK); DELAY(1); } fail: XE_MII_CLR(XE_MII_CLK); DELAY(1); XE_MII_SET(XE_MII_CLK); DELAY(1); splx(s); if (ack) return(1); return(0); } /* * Write to a PHY register through the MII. */ static int xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) { int s; s = splimp(); /* * Set up frame for TX. */ frame->mii_stdelim = XE_MII_STARTDELIM; frame->mii_opcode = XE_MII_WRITEOP; frame->mii_turnaround = XE_MII_TURNAROUND; XE_SELECT_PAGE(2); /* * Turn on data output. */ XE_MII_SET(XE_MII_DIR); xe_mii_sync(scp); xe_mii_send(scp, frame->mii_stdelim, 2); xe_mii_send(scp, frame->mii_opcode, 2); xe_mii_send(scp, frame->mii_phyaddr, 5); xe_mii_send(scp, frame->mii_regaddr, 5); xe_mii_send(scp, frame->mii_turnaround, 2); xe_mii_send(scp, frame->mii_data, 16); /* Idle bit. */ XE_MII_SET(XE_MII_CLK); DELAY(1); XE_MII_CLR(XE_MII_CLK); DELAY(1); /* * Turn off xmit. */ XE_MII_CLR(XE_MII_DIR); splx(s); return(0); } /* * Read a register from the PHY. */ static u_int16_t xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) { struct xe_mii_frame frame; bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = 0; frame.mii_regaddr = reg; xe_mii_readreg(scp, &frame); return(frame.mii_data); } /* * Write to a PHY register. */ static void xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) { struct xe_mii_frame frame; bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = 0; frame.mii_regaddr = reg; frame.mii_data = data; xe_mii_writereg(scp, &frame); return; } #ifdef XE_DEBUG /* * A bit of debugging code. */ static void xe_mii_dump(struct xe_softc *scp) { int i, s; s = splimp(); device_printf(scp->dev, "MII registers: "); for (i = 0; i < 2; i++) { printf(" %d:%04x", i, xe_phy_readreg(scp, i)); } for (i = 4; i < 7; i++) { printf(" %d:%04x", i, xe_phy_readreg(scp, i)); } printf("\n"); (void)splx(s); } static void xe_reg_dump(struct xe_softc *scp) { int page, i, s; s = splimp(); device_printf(scp->dev, "Common registers: "); for (i = 0; i < 8; i++) { printf(" %2.2x", XE_INB(i)); } printf("\n"); for (page = 0; page <= 8; page++) { device_printf(scp->dev, "Register page %2.2x: ", page); XE_SELECT_PAGE(page); for (i = 8; i < 16; i++) { printf(" %2.2x", XE_INB(i)); } printf("\n"); } for (page = 0x10; page < 0x5f; page++) { if ((page >= 0x11 && page <= 0x3f) || (page == 0x41) || (page >= 0x43 && page <= 0x4f) || (page >= 0x59)) continue; device_printf(scp->dev, "Register page %2.2x: ", page); XE_SELECT_PAGE(page); for (i = 8; i < 16; i++) { printf(" %2.2x", XE_INB(i)); } printf("\n"); } (void)splx(s); } #endif int xe_activate(device_t dev) { struct xe_softc *sc = device_get_softc(dev); int start, err; if (!sc->dingo) { sc->port_rid = 0; /* 0 is managed by pccard */ sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->port_rid, 0, ~0, 16, RF_ACTIVE); } else { /* * Find a 16 byte aligned ioport for the card. */ #if XE_DEBUG > 0 device_printf(dev, "Finding an aligned port for RealPort\n"); #endif /* XE_DEBUG */ sc->port_rid = 1; /* 0 is managed by pccard */ start = 0x100; do { sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16, RF_ACTIVE); if (sc->port_res == 0) break; /* we failed */ if ((rman_get_start(sc->port_res) & 0xf) == 0) break; /* good */ bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, sc->port_res); start = (rman_get_start(sc->port_res) + 15) & ~0xf; } while (1); #if XE_DEBUG > 2 device_printf(dev, "port 0x%0lx, size 0x%0lx\n", bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid), bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)); #endif /* XE_DEBUG */ } if (!sc->port_res) { #if XE_DEBUG > 0 device_printf(dev, "Cannot allocate ioport\n"); #endif return ENOMEM; } sc->irq_rid = 0; sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid, 0, ~0, 1, RF_ACTIVE); if (!sc->irq_res) { #if XE_DEBUG > 0 device_printf(dev, "Cannot allocate irq\n"); #endif xe_deactivate(dev); return ENOMEM; } if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc, &sc->intrhand)) != 0) { xe_deactivate(dev); return err; } sc->bst = rman_get_bustag(sc->port_res); sc->bsh = rman_get_bushandle(sc->port_res); return (0); } void xe_deactivate(device_t dev) { struct xe_softc *sc = device_get_softc(dev); if (sc->intrhand) bus_teardown_intr(dev, sc->irq_res, sc->intrhand); sc->intrhand = 0; if (sc->port_res) bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, sc->port_res); sc->port_res = 0; if (sc->irq_res) bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq_res); sc->irq_res = 0; return; }