2 * Copyright (c) 1998, 1999 Scott Mitchell
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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 $
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
37 * xe_cem56fix -- need to figure out how to map the extra stuff.
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
45 * Copyright (c) 1997 by Werner Koch (dd9jn)
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
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
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.
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)
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?)
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.
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
103 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/
105 * Mailing list: http://www.lovett.com/lists/freebsd-xircom/
106 * or send "subscribe freebsd-xircom" to <majordomo@lovett.com>
108 * Author email: <scott@uk.freebsd.org>
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>
122 #include <sys/thread2.h>
124 #include <sys/module.h>
127 #include <machine/bus.h>
128 #include <machine/resource.h>
129 #include <sys/rman.h>
131 #include <net/ethernet.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>
140 #include "if_xereg.h"
141 #include "if_xevar.h"
144 * MII command structure
146 struct xe_mii_frame {
147 u_int8_t mii_stdelim;
149 u_int8_t mii_phyaddr;
150 u_int8_t mii_regaddr;
151 u_int8_t mii_turnaround;
156 * Media autonegotiation progress constants
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 */
166 * Prototypes start here
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);
184 static u_int32_t xe_compute_crc (u_int8_t *data, int len);
185 static int xe_compute_hashbit (u_int32_t crc);
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);
200 * Debug functions -- uncomment for VERY verbose dignostic information.
201 * Set to 1 for less verbose information
203 /* #define XE_DEBUG 2 */
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);
210 #define XE_REG_DUMP(scp)
211 #define XE_MII_DUMP(scp)
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.
221 xe_detach(device_t dev)
223 struct xe_softc *sc = device_get_softc(dev);
225 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
226 callout_stop(&sc->xe_timer);
227 ether_ifdetach(&sc->arpcom.ac_if);
236 xe_attach (device_t dev)
238 struct xe_softc *scp = device_get_softc(dev);
241 device_printf(dev, "attach\n");
244 /* Fill in some private data */
245 scp->ifp = &scp->arpcom.ac_if;
246 scp->ifm = &scp->ifmedia;
247 scp->autoneg_status = 0;
249 /* Hopefully safe to read this here */
251 scp->version = XE_INB(XE_BOV);
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);
267 /* Initialise the ifmedia structure */
268 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
269 callout_init(&scp->xe_timer);
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.
277 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
278 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
281 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
282 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
284 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
286 /* Default is to autoselect best supported media type */
287 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
289 /* Print some useful information */
290 device_printf(dev, "%s %s, bonding version %#x%s%s\n",
294 scp->mohawk ? ", 100Mbps capable" : "",
295 scp->modem ? ", with modem" : "");
297 XE_SELECT_PAGE(0x10);
298 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n",
301 XE_INW(XE_VendorID));
304 XE_SELECT_PAGE(0x45);
305 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV));
308 /* Attach the interface */
309 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr);
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.
322 xe_init(void *xscp) {
323 struct xe_softc *scp = xscp;
326 if_printf(scp->ifp, "init\n");
329 /* Reset transmitter flags */
332 scp->tx_collisions = 0;
333 scp->ifp->if_timer = 0;
337 XE_SELECT_PAGE(0x42);
338 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */
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.
345 if (scp->srev != 1) {
347 XE_OUTW(XE_RBS, 0x2000);
350 /* Set up multicast addresses */
353 /* Fix the data offset register -- reset leaves it off-by-one */
355 XE_OUTW(XE_DO, 0x2000);
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.
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 */
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
374 if (scp->autoneg_status) {
375 scp->ifp->if_flags |= IFF_RUNNING;
378 /* Enable receiver, put MAC online */
379 XE_SELECT_PAGE(0x40);
380 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
382 /* Set up IMR, enable interrupts */
385 /* Attempt to start output */
386 scp->ifp->if_flags |= IFF_RUNNING;
387 scp->ifp->if_flags &= ~IFF_OACTIVE;
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
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)
404 xe_start(struct ifnet *ifp) {
405 struct xe_softc *scp = ifp->if_softc;
409 * Loop while there are packets to be sent, and space to send them.
412 mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */
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
422 ifp->if_flags &= ~IFF_OACTIVE;
426 if (xe_pio_write_packet(scp, mbp) != 0) {
427 ifp->if_flags |= IFF_OACTIVE;
431 mbp = ifq_dequeue(&ifp->if_snd);
434 ifp->if_timer = 5; /* In case we don't hear from the card again */
443 * Process an ioctl request. Adapted from the ed driver.
446 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) {
447 struct xe_softc *scp;
459 * If the interface is marked up and stopped, then start it. If it is
460 * marked down and running, then stop it.
462 if (ifp->if_flags & IFF_UP) {
463 if (!(ifp->if_flags & IFF_RUNNING)) {
470 if (ifp->if_flags & IFF_RUNNING)
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.
488 * Someone wants to get/set media options.
490 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
494 error = ether_ioctl(ifp, command, data);
505 * Card interrupt handler.
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
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 :)
525 struct xe_softc *scp = (struct xe_softc *) xscp;
528 u_int16_t rx_bytes, rxs, txs;
529 u_int8_t psr, isr, esr, rsr;
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 */
536 XE_OUTB(XE_CR, 0); /* Disable interrupts */
539 psr = XE_INB(XE_PR); /* Stash the current register page */
542 * Read ISR to see what caused this interrupt. Note that this clears the
543 * ISR on CE2 type cards.
545 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) {
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);
559 if_printf(ifp, "ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", isr, esr, rxs, txs);
563 * Handle transmit interrupts
565 if (isr & XE_ISR_TX_PACKET) {
566 u_int8_t new_tpr, sent;
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 */
571 sent = new_tpr - scp->tx_tpr;
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;
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
588 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT!
590 switch (scp->tx_collisions) {
594 scp->mibdata.dot3StatsSingleCollisionFrames++;
595 scp->mibdata.dot3StatsCollFrequencies[0]++;
599 scp->mibdata.dot3StatsMultipleCollisionFrames++;
600 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++;
602 else { /* Distribute across multiple frames */
603 scp->mibdata.dot3StatsMultipleCollisionFrames += sent;
605 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent;
607 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent;
610 scp->tx_collisions = 0;
613 ifp->if_flags &= ~IFF_OACTIVE;
615 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */
616 ifp->if_collisions += 16;
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);
624 if (txs & 0x0040) /* Transmit aborted -- probably collisions */
625 scp->tx_collisions++;
629 * Handle receive interrupts
631 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
633 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) {
634 struct ether_header *ehp;
638 len = XE_INW(XE_RBC);
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.
649 if ((rx_bytes += len) > 22000) {
651 scp->mibData.dot3StatsMissedFrames++;
652 XE_OUTW(XE_DO, 0x8000);
660 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */
662 mbp->m_pkthdr.rcvif = ifp;
663 mbp->m_pkthdr.len = mbp->m_len = len;
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.
670 if (len + 2 > MHLEN) {
671 MCLGET(mbp, MB_DONTWAIT);
672 if ((mbp->m_flags & M_EXT) == 0) {
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.
687 ehp = mtod(mbp, struct ether_header *);
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).
695 if (scp->srev == 0) { /* Workaround a bug in old cards */
699 rhs = XE_INW(XE_RHSA);
702 rhs += 3; /* Skip control info */
707 if (rhs + len > 0x8000) {
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?).
717 for (i = 0; i < len; i++, rhs++) {
718 ((char *)ehp)[i] = XE_INB(XE_EDP);
726 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
727 (u_int16_t *) ehp, len >> 1);
730 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
731 (u_int16_t *) ehp, len >> 1);
733 /* Deliver packet to upper layers */
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! */
739 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */
742 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */
743 scp->mibdata.dot3StatsFrameTooLongs++;
746 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */
747 scp->mibdata.dot3StatsFCSErrors++;
750 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */
751 scp->mibdata.dot3StatsAlignmentErrors++;
755 if (rxs & 0x10) { /* Receiver overrun */
756 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
758 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
762 XE_SELECT_PAGE(psr); /* Restore saved page */
763 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */
765 /* Could force an int here, instead of dropping packets? */
766 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */
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
779 xe_watchdog(struct ifnet *ifp) {
780 struct xe_softc *scp = ifp->if_softc;
782 if_printf(ifp, "watchdog timeout; resetting card\n");
784 ifp->if_oerrors += scp->tx_queued;
793 * Change media selection.
796 xe_media_change(struct ifnet *ifp) {
797 struct xe_softc *scp = ifp->if_softc;
800 if_printf(ifp, "media_change\n");
803 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
807 * Some card/media combos aren't always possible -- filter those out here.
809 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
810 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
820 * Return current media selection.
823 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
826 if_printf(ifp, "media_status\n");
829 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
836 * Select active media.
838 static void xe_setmedia(void *xscp) {
839 struct xe_softc *scp = xscp;
840 u_int16_t bmcr, bmsr, anar, lpar;
843 if_printf(scp->ifp, "setmedia\n");
846 /* Cancel any pending timeout */
847 callout_stop(&scp->xe_timer);
848 xe_disable_intr(scp);
851 scp->media = IFM_ETHER;
852 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
854 case IFM_AUTO: /* Autoselect media */
855 scp->media = IFM_ETHER|IFM_AUTO;
858 * Autoselection is really awful. It goes something like this:
860 * Wait until the transmitter goes idle (2sec timeout).
862 * IF a 100Mbit PHY exists
863 * Start NWAY autonegotiation (3.5sec timeout)
865 * Select 100baseTX or 10baseT, whichever was detected
868 * IF a 100Mbit PHY exists
869 * Try to force a 100baseTX link (3sec timeout)
878 * IF nothing selected so far
879 * IF a 100Mbit PHY exists
882 * Select 10baseT or 10base2, whichever is connected
886 switch (scp->autoneg_status) {
888 case XE_AUTONEG_NONE:
890 if_printf(scp->ifp, "Waiting for idle transmitter\n");
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);
897 case XE_AUTONEG_WAITING:
901 if_printf(scp->ifp, "Starting autonegotiation\n");
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);
917 scp->autoneg_status = XE_AUTONEG_FAIL;
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)) {
926 if_printf(scp->ifp, "Autonegotiation complete!\n");
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.
934 if (lpar & PHY_LPAR_100BTXHALF) {
935 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
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;
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.
950 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
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;
959 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
960 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
965 if_printf(scp->ifp, "Autonegotiation failed; trying 100baseTX\n");
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);
976 scp->autoneg_status = XE_AUTONEG_FAIL;
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) {
986 if_printf(scp->ifp, "Got 100baseTX link!\n");
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;
996 if_printf(scp->ifp, "Autonegotiation failed; disabling PHY\n");
999 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1001 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1002 scp->autoneg_status = XE_AUTONEG_FAIL;
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.
1014 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1016 if_printf(scp->ifp, "Selecting 10baseX\n");
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;
1026 XE_OUTB(XE_GPR0, 4);
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;
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).
1042 case IFM_100_TX: /* Force 100baseTX */
1046 if_printf(scp->ifp, "Selecting 100baseTX\n");
1048 XE_SELECT_PAGE(0x42);
1049 XE_OUTB(XE_SWC1, 0);
1050 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1052 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1053 scp->media |= IFM_100_TX;
1058 case IFM_10_T: /* Force 10baseT */
1061 if_printf(scp->ifp, "Selecting 10baseT\n");
1064 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1066 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1068 XE_SELECT_PAGE(0x42);
1069 XE_OUTB(XE_SWC1, 0x80);
1070 scp->media |= IFM_10_T;
1076 if_printf(scp->ifp, "Selecting 10base2\n");
1078 XE_SELECT_PAGE(0x42);
1079 XE_OUTB(XE_SWC1, 0xc0);
1080 scp->media |= IFM_10_2;
1086 * Finally, the LEDs are set to match whatever media was chosen and the
1087 * transmitter is unblocked.
1090 if_printf(scp->ifp, "Setting LEDs\n");
1093 switch (IFM_SUBTYPE(scp->media)) {
1096 XE_OUTB(XE_LED, 0x3b);
1098 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1102 XE_OUTB(XE_LED, 0x3a);
1106 /* Restart output? */
1107 scp->ifp->if_flags &= ~IFF_OACTIVE;
1113 * Hard reset (power cycle) the card.
1116 xe_hard_reset(struct xe_softc *scp) {
1119 if_printf(scp->ifp, "hard_reset\n");
1125 * Power cycle the card.
1128 XE_OUTB(XE_GPR1, 0); /* Power off */
1132 XE_OUTB(XE_GPR1, 1); /* And back on again */
1134 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */
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.
1150 xe_soft_reset(struct xe_softc *scp) {
1153 if_printf(scp->ifp, "soft_reset\n");
1159 * Reset the card, (again).
1162 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
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)
1174 XE_OUTB(XE_GPR0, 0x0e);
1178 * Wait for everything to wake up.
1183 * Get silicon revision number.
1187 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
1189 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
1191 if_printf(scp->ifp, "silicon revision = %d\n", scp->srev);
1195 * Shut off interrupts.
1197 xe_disable_intr(scp);
1203 scp->phy_ok = xe_mii_init(scp);
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.
1218 xe_stop(struct xe_softc *scp) {
1221 if_printf(scp->ifp, "stop\n");
1227 * Shut off interrupts.
1229 xe_disable_intr(scp);
1235 XE_OUTB(XE_GPR1, 0);
1239 * ~IFF_RUNNING == interface down.
1241 scp->ifp->if_flags &= ~IFF_RUNNING;
1242 scp->ifp->if_flags &= ~IFF_OACTIVE;
1243 scp->ifp->if_timer = 0;
1250 * Enable Ethernet interrupts from the card.
1253 xe_enable_intr(struct xe_softc *scp) {
1255 if_printf(scp->ifp, "enable_intr\n");
1259 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */
1260 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */
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 */
1274 * Disable all Ethernet interrupts from the card.
1277 xe_disable_intr(struct xe_softc *scp) {
1279 if_printf(scp->ifp, "disable_intr\n");
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 */
1289 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */
1290 XE_OUTB(XE_IMR1, 0);
1296 * Set up multicast filter and promiscuous mode
1299 xe_setmulti(struct xe_softc *scp) {
1301 struct ifmultiaddr *ifma;
1304 ifp = &scp->arpcom.ac_if;
1306 /* Get length of multicast list */
1308 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
1311 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) {
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
1317 XE_SELECT_PAGE(0x42);
1318 XE_OUTB(XE_SWC1, 0x06);
1320 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) {
1322 * Program the filters for up to 9 addresses
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);*/
1330 /*xe_reg_dump(scp);*/
1331 XE_SELECT_PAGE(0x40);
1332 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
1336 * No multicast operation (default)
1338 XE_SELECT_PAGE(0x42);
1339 XE_OUTB(XE_SWC1, 0);
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).
1354 xe_setaddrs(struct xe_softc *scp) {
1355 struct ifmultiaddr *ifma;
1357 u_int8_t page, slot, byte, i;
1359 ifma = LIST_FIRST(&scp->arpcom.ac_if.if_multiaddrs);
1361 XE_SELECT_PAGE(page = 0x50);
1363 for (slot = 0, byte = 8; slot < 10; slot++) {
1366 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1368 while (ifma != NULL && ifma->ifma_addr->sa_family != AF_LINK)
1369 ifma = LIST_NEXT(ifma, ifma_link);
1371 addr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
1373 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1376 for (i = 0; i < 6; i++, byte++) {
1379 printf(":%x", addr[i]);
1381 if_printf(scp->ifp, "individual addresses %d: %x", slot, addr[0]);
1387 XE_SELECT_PAGE(page);
1391 XE_OUTB(byte, addr[5 - i]);
1393 XE_OUTB(byte, addr[i]);
1405 * Write an outgoing packet to the card using programmed I/O.
1408 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1410 u_int16_t len, pad, free, ok;
1412 u_int8_t savebyte[2], wantbyte;
1414 /* Get total packet length */
1415 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1417 /* Packets < minimum length may need to be padded out */
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;
1424 /* Check transmit buffer space */
1426 XE_OUTW(XE_TRS, len+2);
1427 free = XE_INW(XE_TSO);
1430 if (free <= len + 2)
1433 /* Send packet length to card */
1434 XE_OUTW(XE_EDP, len);
1437 * Write packet to card using PIO (code stolen from the ed driver)
1440 while (mbp != NULL) {
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);
1451 if (len > 1) { /* Output contiguous words */
1452 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1457 if (len == 1) { /* Save last byte, if necessary */
1458 savebyte[0] = *data;
1464 if (wantbyte) /* Last byte for odd-length packets */
1465 XE_OUTW(XE_EDP, *(u_short *)savebyte);
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 (?)
1473 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR);
1476 XE_OUTW(XE_EDP, 0xdead);
1485 * Compute the 32-bit Ethernet CRC for the given buffer.
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;
1494 for (i = 0; i < len; i++) {
1496 for (k = 1; k <= 8; k++) {
1497 if (crc & 0x80000000) {
1503 bit = crc31 ^ (current & 0x01);
1507 crc = (crc ^ poly)|1;
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.
1523 xe_compute_hashbit(u_int32_t crc) {
1524 u_int8_t hashbit = 0;
1527 for (i = 0; i < 6; i++) {
1529 if (crc & 0x80000000) {
1534 return (hashbit >> 2);
1541 /**************************************************************
1543 * M I I F U N C T I O N S *
1545 **************************************************************/
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.
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))
1559 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1562 xe_mii_sync(struct xe_softc *scp) {
1566 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1568 for (i = 0; i < 32; i++) {
1569 XE_MII_SET(XE_MII_CLK);
1571 XE_MII_CLR(XE_MII_CLK);
1578 * Look for a MII-compliant PHY. If we find one, reset it.
1581 xe_mii_init(struct xe_softc *scp) {
1584 status = xe_phy_readreg(scp, PHY_BMSR);
1585 if ((status & 0xff00) != 0x7800) {
1587 if_printf(scp->ifp, "no PHY found, %0x\n", status);
1593 if_printf(scp->ifp, "PHY OK!\n");
1597 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1599 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1607 * Clock a series of bits through the MII.
1610 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1614 XE_MII_CLR(XE_MII_CLK);
1616 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1618 XE_MII_SET(XE_MII_WRD);
1620 XE_MII_CLR(XE_MII_WRD);
1623 XE_MII_CLR(XE_MII_CLK);
1625 XE_MII_SET(XE_MII_CLK);
1631 * Read an PHY register through the MII.
1634 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1640 * Set up frame for RX.
1642 frame->mii_stdelim = XE_MII_STARTDELIM;
1643 frame->mii_opcode = XE_MII_READOP;
1644 frame->mii_turnaround = 0;
1645 frame->mii_data = 0;
1648 XE_OUTB(XE_GPR2, 0);
1651 * Turn on data xmit.
1653 XE_MII_SET(XE_MII_DIR);
1658 * Send command/address info.
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);
1666 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1668 XE_MII_SET(XE_MII_CLK);
1671 /* Turn off xmit. */
1672 XE_MII_CLR(XE_MII_DIR);
1675 XE_MII_CLR(XE_MII_CLK);
1677 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1678 XE_MII_SET(XE_MII_CLK);
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.
1686 for(i = 0; i < 16; i++) {
1687 XE_MII_CLR(XE_MII_CLK);
1689 XE_MII_SET(XE_MII_CLK);
1695 for (i = 0x8000; i; i >>= 1) {
1696 XE_MII_CLR(XE_MII_CLK);
1699 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1700 frame->mii_data |= i;
1703 XE_MII_SET(XE_MII_CLK);
1709 XE_MII_CLR(XE_MII_CLK);
1711 XE_MII_SET(XE_MII_CLK);
1723 * Write to a PHY register through the MII.
1726 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1731 * Set up frame for TX.
1733 frame->mii_stdelim = XE_MII_STARTDELIM;
1734 frame->mii_opcode = XE_MII_WRITEOP;
1735 frame->mii_turnaround = XE_MII_TURNAROUND;
1740 * Turn on data output.
1742 XE_MII_SET(XE_MII_DIR);
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);
1754 XE_MII_SET(XE_MII_CLK);
1756 XE_MII_CLR(XE_MII_CLK);
1762 XE_MII_CLR(XE_MII_DIR);
1771 * Read a register from the PHY.
1774 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
1775 struct xe_mii_frame frame;
1777 bzero((char *)&frame, sizeof(frame));
1779 frame.mii_phyaddr = 0;
1780 frame.mii_regaddr = reg;
1781 xe_mii_readreg(scp, &frame);
1783 return(frame.mii_data);
1788 * Write to a PHY register.
1791 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
1792 struct xe_mii_frame frame;
1794 bzero((char *)&frame, sizeof(frame));
1796 frame.mii_phyaddr = 0;
1797 frame.mii_regaddr = reg;
1798 frame.mii_data = data;
1799 xe_mii_writereg(scp, &frame);
1807 * A bit of debugging code.
1810 xe_mii_dump(struct xe_softc *scp) {
1815 if_printf(scp->ifp, "MII registers: ");
1816 for (i = 0; i < 2; i++) {
1817 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1819 for (i = 4; i < 7; i++) {
1820 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1828 xe_reg_dump(struct xe_softc *scp) {
1833 if_printf(scp->ifp, "Common registers: ");
1834 for (i = 0; i < 8; i++) {
1835 printf(" %2.2x", XE_INB(i));
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));
1848 for (page = 0x10; page < 0x5f; page++) {
1849 if ((page >= 0x11 && page <= 0x3f) ||
1851 (page >= 0x43 && page <= 0x4f) ||
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));
1867 xe_activate(device_t dev)
1869 struct xe_softc *sc = device_get_softc(dev);
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);
1878 * Find a 16 byte aligned ioport for the card.
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 */
1886 sc->port_res = bus_alloc_resource(dev,
1887 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
1889 if (sc->port_res == 0)
1890 break; /* we failed */
1891 if ((rman_get_start(sc->port_res) & 0xf) == 0)
1893 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1895 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
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 */
1903 if (!sc->port_res) {
1905 device_printf(dev, "Cannot allocate ioport\n");
1911 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
1915 device_printf(dev, "Cannot allocate irq\n");
1920 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc,
1921 &sc->intrhand, NULL);
1923 ether_ifdetach(&sc->arpcom.ac_if);
1928 sc->bst = rman_get_bustag(sc->port_res);
1929 sc->bsh = rman_get_bushandle(sc->port_res);
1934 xe_deactivate(device_t dev)
1936 struct xe_softc *sc = device_get_softc(dev);
1939 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
1942 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1946 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,