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 1.26 2005/07/13 17:46:05 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_intr (void *xscp);
170 static void xe_start (struct ifnet *ifp);
171 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *);
172 static void xe_watchdog (struct ifnet *ifp);
173 static int xe_media_change (struct ifnet *ifp);
174 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp);
175 static timeout_t xe_setmedia;
176 static void xe_hard_reset (struct xe_softc *scp);
177 static void xe_soft_reset (struct xe_softc *scp);
178 static void xe_stop (struct xe_softc *scp);
179 static void xe_enable_intr (struct xe_softc *scp);
180 static void xe_disable_intr (struct xe_softc *scp);
181 static void xe_setmulti (struct xe_softc *scp);
182 static void xe_setaddrs (struct xe_softc *scp);
183 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
185 static u_int32_t xe_compute_crc (u_int8_t *data, int len);
186 static int xe_compute_hashbit (u_int32_t crc);
192 static void xe_mii_sync (struct xe_softc *scp);
193 static int xe_mii_init (struct xe_softc *scp);
194 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt);
195 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame);
196 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame);
197 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg);
198 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data);
201 * Debug functions -- uncomment for VERY verbose dignostic information.
202 * Set to 1 for less verbose information
204 /* #define XE_DEBUG 2 */
206 #define XE_REG_DUMP(scp) xe_reg_dump((scp))
207 #define XE_MII_DUMP(scp) xe_mii_dump((scp))
208 static void xe_reg_dump (struct xe_softc *scp);
209 static void xe_mii_dump (struct xe_softc *scp);
211 #define XE_REG_DUMP(scp)
212 #define XE_MII_DUMP(scp)
216 * The device entry is being removed, probably because someone ejected the
217 * card. The interface should have been brought down manually before calling
218 * this function; if not you may well lose packets. In any case, I shut down
219 * the card and the interface, and hope for the best.
222 xe_detach(device_t dev)
224 struct xe_softc *sc = device_get_softc(dev);
228 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
229 callout_stop(&sc->xe_timer);
230 ether_ifdetach(&sc->arpcom.ac_if);
231 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
243 xe_attach (device_t dev)
245 struct xe_softc *scp = device_get_softc(dev);
249 device_printf(dev, "attach\n");
252 /* Fill in some private data */
253 scp->ifp = &scp->arpcom.ac_if;
254 scp->ifm = &scp->ifmedia;
255 scp->autoneg_status = 0;
257 /* Hopefully safe to read this here */
259 scp->version = XE_INB(XE_BOV);
261 /* Initialise the ifnet structure */
262 scp->ifp->if_softc = scp;
263 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev));
264 scp->ifp->if_timer = 0;
265 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
266 scp->ifp->if_linkmib = &scp->mibdata;
267 scp->ifp->if_linkmiblen = sizeof scp->mibdata;
268 scp->ifp->if_start = xe_start;
269 scp->ifp->if_ioctl = xe_ioctl;
270 scp->ifp->if_watchdog = xe_watchdog;
271 scp->ifp->if_init = xe_init;
272 ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN);
273 ifq_set_ready(&scp->ifp->if_snd);
275 /* Initialise the ifmedia structure */
276 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
277 callout_init(&scp->xe_timer);
280 * Fill in supported media types. Some cards _do_ support full duplex
281 * operation, but this driver doesn't, yet. Therefore we leave those modes
282 * out of the list. We support some form of autoselection in all cases.
285 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
286 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
289 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
290 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
292 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
294 /* Default is to autoselect best supported media type */
295 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
297 /* Print some useful information */
298 device_printf(dev, "%s %s, bonding version %#x%s%s\n",
302 scp->mohawk ? ", 100Mbps capable" : "",
303 scp->modem ? ", with modem" : "");
305 XE_SELECT_PAGE(0x10);
306 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n",
309 XE_INW(XE_VendorID));
312 XE_SELECT_PAGE(0x45);
313 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV));
316 /* Attach the interface */
317 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr);
319 err = bus_setup_intr(dev, scp->irq_res, INTR_TYPE_NET, xe_intr, scp,
320 &scp->intrhand, NULL);
322 ether_ifdetach(&scp->arpcom.ac_if);
333 * Initialize device. Completes the reset procedure on the card and starts
334 * output. If there's an autonegotiation in progress we DON'T do anything;
335 * the media selection code will call us again when it's done.
338 xe_init(void *xscp) {
339 struct xe_softc *scp = xscp;
342 if_printf(scp->ifp, "init\n");
345 /* Reset transmitter flags */
348 scp->tx_collisions = 0;
349 scp->ifp->if_timer = 0;
353 XE_SELECT_PAGE(0x42);
354 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */
357 * Set the 'local memory dividing line' -- splits the 32K card memory into
358 * 8K for transmit buffers and 24K for receive. This is done automatically
359 * on newer revision cards.
361 if (scp->srev != 1) {
363 XE_OUTW(XE_RBS, 0x2000);
366 /* Set up multicast addresses */
369 /* Fix the data offset register -- reset leaves it off-by-one */
371 XE_OUTW(XE_DO, 0x2000);
374 * Set MAC interrupt masks and clear status regs. The bit names are direct
375 * from the Linux code; I have no idea what most of them do.
377 XE_SELECT_PAGE(0x40); /* Bit 7..0 */
378 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
379 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
380 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */
381 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
382 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
383 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
386 * Check for an in-progress autonegotiation. If one is active, just set
387 * IFF_RUNNING and return. The media selection code will call us again when
390 if (scp->autoneg_status) {
391 scp->ifp->if_flags |= IFF_RUNNING;
394 /* Enable receiver, put MAC online */
395 XE_SELECT_PAGE(0x40);
396 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
398 /* Set up IMR, enable interrupts */
401 /* Attempt to start output */
402 scp->ifp->if_flags |= IFF_RUNNING;
403 scp->ifp->if_flags &= ~IFF_OACTIVE;
412 * Start output on interface. We make two assumptions here:
413 * 1) that we are in a critical section _before_ this code
414 * is called *and* is returned to the appropriate priority after
416 * 2) that the IFF_OACTIVE flag is checked before this code is called
417 * (i.e. that the output part of the interface is idle)
420 xe_start(struct ifnet *ifp) {
421 struct xe_softc *scp = ifp->if_softc;
425 * Loop while there are packets to be sent, and space to send them.
428 mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */
432 * We are using the !OACTIVE flag to indicate to the outside world that
433 * we can accept an additional packet rather than that the transmitter
434 * is _actually_ active. Indeed, the transmitter may be active, but if
435 * we haven't filled all the buffers with data then we still want to
438 ifp->if_flags &= ~IFF_OACTIVE;
442 if (xe_pio_write_packet(scp, mbp) != 0) {
443 ifp->if_flags |= IFF_OACTIVE;
447 mbp = ifq_dequeue(&ifp->if_snd);
450 ifp->if_timer = 5; /* In case we don't hear from the card again */
459 * Process an ioctl request. Adapted from the ed driver.
462 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) {
463 struct xe_softc *scp;
475 * If the interface is marked up and stopped, then start it. If it is
476 * marked down and running, then stop it.
478 if (ifp->if_flags & IFF_UP) {
479 if (!(ifp->if_flags & IFF_RUNNING)) {
486 if (ifp->if_flags & IFF_RUNNING)
493 * Multicast list has (maybe) changed; set the hardware filter
494 * accordingly. This also serves to deal with promiscuous mode if we have
495 * a BPF listener active.
504 * Someone wants to get/set media options.
506 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
510 error = ether_ioctl(ifp, command, data);
521 * Card interrupt handler.
523 * This function is probably more complicated than it needs to be, as it
524 * attempts to deal with the case where multiple packets get sent between
525 * interrupts. This is especially annoying when working out the collision
526 * stats. Not sure whether this case ever really happens or not (maybe on a
527 * slow/heavily loaded machine?) so it's probably best to leave this like it
530 * Note that the crappy PIO used to get packets on and off the card means that
531 * you will spend a lot of time in this routine -- I can get my P150 to spend
532 * 90% of its time servicing interrupts if I really hammer the network. Could
533 * fix this, but then you'd start dropping/losing packets. The moral of this
534 * story? If you want good network performance _and_ some cycles left over to
535 * get your work done, don't buy a Xircom card. Or convince them to tell me
536 * how to do memory-mapped I/O :)
541 struct xe_softc *scp = (struct xe_softc *) xscp;
544 u_int16_t rx_bytes, rxs, txs;
545 u_int8_t psr, isr, esr, rsr;
547 ifp = &scp->arpcom.ac_if;
548 rx_bytes = 0; /* Bytes received on this interrupt */
549 result = 0; /* Set true if the interrupt is for us */
552 XE_OUTB(XE_CR, 0); /* Disable interrupts */
555 psr = XE_INB(XE_PR); /* Stash the current register page */
558 * Read ISR to see what caused this interrupt. Note that this clears the
559 * ISR on CE2 type cards.
561 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) {
563 result = 1; /* This device did generate an int */
564 esr = XE_INB(XE_ESR); /* Read the other status registers */
565 XE_SELECT_PAGE(0x40);
566 rxs = XE_INB(XE_RST0);
567 XE_OUTB(XE_RST0, ~rxs & 0xff);
568 txs = XE_INB(XE_TXST0);
569 txs |= XE_INB(XE_TXST1) << 8;
570 XE_OUTB(XE_TXST0, 0);
571 XE_OUTB(XE_TXST1, 0);
575 if_printf(ifp, "ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", isr, esr, rxs, txs);
579 * Handle transmit interrupts
581 if (isr & XE_ISR_TX_PACKET) {
582 u_int8_t new_tpr, sent;
584 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */
585 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */
587 sent = new_tpr - scp->tx_tpr;
589 if (sent > 0) { /* Packets sent since last interrupt */
590 scp->tx_tpr = new_tpr;
591 scp->tx_queued -= sent;
592 ifp->if_opackets += sent;
593 ifp->if_collisions += scp->tx_collisions;
596 * Collision stats are a PITA. If multiples frames have been sent, we
597 * distribute any outstanding collision count equally amongst them.
598 * However, if we're missing interrupts we're quite likely to also
599 * miss some collisions; thus the total count will be off anyway.
600 * Likewise, if we miss a frame dropped due to excessive collisions
601 * any outstanding collisions count will be held against the next
602 * frame to be successfully sent. Hopefully it averages out in the
604 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT!
606 switch (scp->tx_collisions) {
610 scp->mibdata.dot3StatsSingleCollisionFrames++;
611 scp->mibdata.dot3StatsCollFrequencies[0]++;
615 scp->mibdata.dot3StatsMultipleCollisionFrames++;
616 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++;
618 else { /* Distribute across multiple frames */
619 scp->mibdata.dot3StatsMultipleCollisionFrames += sent;
621 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent;
623 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent;
626 scp->tx_collisions = 0;
629 ifp->if_flags &= ~IFF_OACTIVE;
631 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */
632 ifp->if_collisions += 16;
634 scp->tx_collisions = 0;
635 scp->mibdata.dot3StatsExcessiveCollisions++;
636 scp->mibdata.dot3StatsMultipleCollisionFrames++;
637 scp->mibdata.dot3StatsCollFrequencies[15]++;
638 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
640 if (txs & 0x0040) /* Transmit aborted -- probably collisions */
641 scp->tx_collisions++;
645 * Handle receive interrupts
647 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
649 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) {
650 struct ether_header *ehp;
654 len = XE_INW(XE_RBC);
661 * Limit the amount of time we spend in this loop, dropping packets if
662 * necessary. The Linux code does this with considerably more
663 * finesse, adjusting the threshold dynamically.
665 if ((rx_bytes += len) > 22000) {
667 scp->mibData.dot3StatsMissedFrames++;
668 XE_OUTW(XE_DO, 0x8000);
676 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */
678 mbp->m_pkthdr.rcvif = ifp;
679 mbp->m_pkthdr.len = mbp->m_len = len;
682 * If the mbuf header isn't big enough for the packet, attach an
683 * mbuf cluster to hold it. The +2 is to allow for the nasty little
684 * alignment hack below.
686 if (len + 2 > MHLEN) {
687 MCLGET(mbp, MB_DONTWAIT);
688 if ((mbp->m_flags & M_EXT) == 0) {
697 * The Ethernet header is 14 bytes long; thus the actual packet data
698 * won't be 32-bit aligned when it's dumped into the mbuf. We
699 * offset everything by 2 bytes to fix this. Apparently the
700 * alignment is important for NFS, damn its eyes.
703 ehp = mtod(mbp, struct ether_header *);
706 * Now get the packet, including the Ethernet header and trailer (?)
707 * We use programmed I/O, because we don't know how to do shared
708 * memory with these cards. So yes, it's real slow, and heavy on
709 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming).
711 if (scp->srev == 0) { /* Workaround a bug in old cards */
715 rhs = XE_INW(XE_RHSA);
718 rhs += 3; /* Skip control info */
723 if (rhs + len > 0x8000) {
727 * XXX - This i-- seems very wrong, but it's what the Linux guys
728 * XXX - do. Need someone with an old CE2 to test this for me.
729 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll
730 * XXX - fix it? It seems as though the previous version would
731 * XXX - have caused an infinite loop (what, another one?).
733 for (i = 0; i < len; i++, rhs++) {
734 ((char *)ehp)[i] = XE_INB(XE_EDP);
742 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
743 (u_int16_t *) ehp, len >> 1);
746 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
747 (u_int16_t *) ehp, len >> 1);
749 /* Deliver packet to upper layers */
751 mbp->m_pkthdr.len = mbp->m_len = len;
752 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */
753 ifp->if_ipackets++; /* Success! */
755 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */
758 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */
759 scp->mibdata.dot3StatsFrameTooLongs++;
762 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */
763 scp->mibdata.dot3StatsFCSErrors++;
766 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */
767 scp->mibdata.dot3StatsAlignmentErrors++;
771 if (rxs & 0x10) { /* Receiver overrun */
772 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
774 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
778 XE_SELECT_PAGE(psr); /* Restore saved page */
779 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */
781 /* Could force an int here, instead of dropping packets? */
782 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */
789 * Device timeout/watchdog routine. Called automatically if we queue a packet
790 * for transmission but don't get an interrupt within a specified timeout
791 * (usually 5 seconds). When this happens we assume the worst and reset the
795 xe_watchdog(struct ifnet *ifp) {
796 struct xe_softc *scp = ifp->if_softc;
798 if_printf(ifp, "watchdog timeout; resetting card\n");
800 ifp->if_oerrors += scp->tx_queued;
809 * Change media selection.
812 xe_media_change(struct ifnet *ifp) {
813 struct xe_softc *scp = ifp->if_softc;
816 if_printf(ifp, "media_change\n");
819 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
823 * Some card/media combos aren't always possible -- filter those out here.
825 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
826 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
836 * Return current media selection.
839 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
842 if_printf(ifp, "media_status\n");
845 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
852 * Select active media.
854 static void xe_setmedia(void *xscp) {
855 struct xe_softc *scp = xscp;
856 u_int16_t bmcr, bmsr, anar, lpar;
859 if_printf(scp->ifp, "setmedia\n");
862 /* Cancel any pending timeout */
863 callout_stop(&scp->xe_timer);
864 xe_disable_intr(scp);
867 scp->media = IFM_ETHER;
868 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
870 case IFM_AUTO: /* Autoselect media */
871 scp->media = IFM_ETHER|IFM_AUTO;
874 * Autoselection is really awful. It goes something like this:
876 * Wait until the transmitter goes idle (2sec timeout).
878 * IF a 100Mbit PHY exists
879 * Start NWAY autonegotiation (3.5sec timeout)
881 * Select 100baseTX or 10baseT, whichever was detected
884 * IF a 100Mbit PHY exists
885 * Try to force a 100baseTX link (3sec timeout)
894 * IF nothing selected so far
895 * IF a 100Mbit PHY exists
898 * Select 10baseT or 10base2, whichever is connected
902 switch (scp->autoneg_status) {
904 case XE_AUTONEG_NONE:
906 if_printf(scp->ifp, "Waiting for idle transmitter\n");
908 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE;
909 scp->autoneg_status = XE_AUTONEG_WAITING;
910 callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp);
913 case XE_AUTONEG_WAITING:
917 if_printf(scp->ifp, "Starting autonegotiation\n");
919 bmcr = xe_phy_readreg(scp, PHY_BMCR);
920 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
921 xe_phy_writereg(scp, PHY_BMCR, bmcr);
922 anar = xe_phy_readreg(scp, PHY_ANAR);
923 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL);
924 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF;
925 xe_phy_writereg(scp, PHY_ANAR, anar);
926 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
927 xe_phy_writereg(scp, PHY_BMCR, bmcr);
928 scp->autoneg_status = XE_AUTONEG_STARTED;
929 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp);
933 scp->autoneg_status = XE_AUTONEG_FAIL;
937 case XE_AUTONEG_STARTED:
938 bmsr = xe_phy_readreg(scp, PHY_BMSR);
939 lpar = xe_phy_readreg(scp, PHY_LPAR);
940 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) {
942 if_printf(scp->ifp, "Autonegotiation complete!\n");
945 * XXX - Shouldn't have to do this, but (on my hub at least) the
946 * XXX - transmitter won't work after a successful autoneg. So we see
947 * XXX - what the negotiation result was and force that mode. I'm
948 * XXX - sure there is an easy fix for this.
950 if (lpar & PHY_LPAR_100BTXHALF) {
951 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
954 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
955 scp->media = IFM_ETHER|IFM_100_TX;
956 scp->autoneg_status = XE_AUTONEG_NONE;
960 * XXX - Bit of a hack going on in here.
961 * XXX - This is derived from Ken Hughes patch to the Linux driver
962 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
963 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
964 * XXX - these are the things we need to find out.
966 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
969 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
970 XE_SELECT_PAGE(0x42);
971 XE_OUTB(XE_SWC1, 0x80);
972 scp->media = IFM_ETHER|IFM_10_T;
973 scp->autoneg_status = XE_AUTONEG_NONE;
975 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
976 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
981 if_printf(scp->ifp, "Autonegotiation failed; trying 100baseTX\n");
986 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
987 scp->autoneg_status = XE_AUTONEG_100TX;
988 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp);
992 scp->autoneg_status = XE_AUTONEG_FAIL;
997 case XE_AUTONEG_100TX:
998 (void)xe_phy_readreg(scp, PHY_BMSR);
999 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1000 if (bmsr & PHY_BMSR_LINKSTAT) {
1002 if_printf(scp->ifp, "Got 100baseTX link!\n");
1006 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1007 scp->media = IFM_ETHER|IFM_100_TX;
1008 scp->autoneg_status = XE_AUTONEG_NONE;
1012 if_printf(scp->ifp, "Autonegotiation failed; disabling PHY\n");
1015 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1017 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1018 scp->autoneg_status = XE_AUTONEG_FAIL;
1024 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1025 * either autonegotiation failed, or never got started to begin with. In
1026 * either case, select a suitable 10Mbit media and hope it works. We
1027 * don't need to reset the card again, since it will have been done
1028 * already by the big switch above.
1030 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1032 if_printf(scp->ifp, "Selecting 10baseX\n");
1035 XE_SELECT_PAGE(0x42);
1036 XE_OUTB(XE_SWC1, 0x80);
1037 scp->media = IFM_ETHER|IFM_10_T;
1038 scp->autoneg_status = XE_AUTONEG_NONE;
1042 XE_OUTB(XE_GPR0, 4);
1044 XE_SELECT_PAGE(0x42);
1045 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0);
1046 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1047 scp->autoneg_status = XE_AUTONEG_NONE;
1054 * If a specific media has been requested, we just reset the card and
1055 * select it (one small exception -- if 100baseTX is requested by there is
1056 * no PHY, we fall back to 10baseT operation).
1058 case IFM_100_TX: /* Force 100baseTX */
1062 if_printf(scp->ifp, "Selecting 100baseTX\n");
1064 XE_SELECT_PAGE(0x42);
1065 XE_OUTB(XE_SWC1, 0);
1066 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1068 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1069 scp->media |= IFM_100_TX;
1074 case IFM_10_T: /* Force 10baseT */
1077 if_printf(scp->ifp, "Selecting 10baseT\n");
1080 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1082 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1084 XE_SELECT_PAGE(0x42);
1085 XE_OUTB(XE_SWC1, 0x80);
1086 scp->media |= IFM_10_T;
1092 if_printf(scp->ifp, "Selecting 10base2\n");
1094 XE_SELECT_PAGE(0x42);
1095 XE_OUTB(XE_SWC1, 0xc0);
1096 scp->media |= IFM_10_2;
1102 * Finally, the LEDs are set to match whatever media was chosen and the
1103 * transmitter is unblocked.
1106 if_printf(scp->ifp, "Setting LEDs\n");
1109 switch (IFM_SUBTYPE(scp->media)) {
1112 XE_OUTB(XE_LED, 0x3b);
1114 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1118 XE_OUTB(XE_LED, 0x3a);
1122 /* Restart output? */
1123 scp->ifp->if_flags &= ~IFF_OACTIVE;
1129 * Hard reset (power cycle) the card.
1132 xe_hard_reset(struct xe_softc *scp) {
1135 if_printf(scp->ifp, "hard_reset\n");
1141 * Power cycle the card.
1144 XE_OUTB(XE_GPR1, 0); /* Power off */
1148 XE_OUTB(XE_GPR1, 1); /* And back on again */
1150 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */
1159 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller
1160 * are powered up, sets the silicon revision number in softc, disables
1161 * interrupts and checks for the prescence of a 100Mbit PHY. This should
1162 * leave us in a position where we can access the PHY and do media
1163 * selection. The function imposes a 0.5s delay while the hardware powers up.
1166 xe_soft_reset(struct xe_softc *scp) {
1169 if_printf(scp->ifp, "soft_reset\n");
1175 * Reset the card, (again).
1178 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
1185 * set GP1 and GP2 as outputs (bits 2 & 3)
1186 * set GP1 low to power on the ML6692 (bit 0)
1187 * set GP2 high to power on the 10Mhz chip (bit 1)
1190 XE_OUTB(XE_GPR0, 0x0e);
1194 * Wait for everything to wake up.
1199 * Get silicon revision number.
1203 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
1205 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
1207 if_printf(scp->ifp, "silicon revision = %d\n", scp->srev);
1211 * Shut off interrupts.
1213 xe_disable_intr(scp);
1219 scp->phy_ok = xe_mii_init(scp);
1229 * Take interface offline. This is done by powering down the device, which I
1230 * assume means just shutting down the transceiver and Ethernet logic. This
1231 * requires a _hard_ reset to recover from, as we need to power up again.
1234 xe_stop(struct xe_softc *scp) {
1237 if_printf(scp->ifp, "stop\n");
1243 * Shut off interrupts.
1245 xe_disable_intr(scp);
1251 XE_OUTB(XE_GPR1, 0);
1255 * ~IFF_RUNNING == interface down.
1257 scp->ifp->if_flags &= ~IFF_RUNNING;
1258 scp->ifp->if_flags &= ~IFF_OACTIVE;
1259 scp->ifp->if_timer = 0;
1266 * Enable Ethernet interrupts from the card.
1269 xe_enable_intr(struct xe_softc *scp) {
1271 if_printf(scp->ifp, "enable_intr\n");
1275 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */
1276 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */
1280 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1281 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1282 if (!(XE_INB(0x10) & 0x01)) {
1283 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1290 * Disable all Ethernet interrupts from the card.
1293 xe_disable_intr(struct xe_softc *scp) {
1295 if_printf(scp->ifp, "disable_intr\n");
1299 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1300 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */
1301 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1305 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */
1306 XE_OUTB(XE_IMR1, 0);
1312 * Set up multicast filter and promiscuous mode
1315 xe_setmulti(struct xe_softc *scp) {
1317 struct ifmultiaddr *ifma;
1320 ifp = &scp->arpcom.ac_if;
1322 /* Get length of multicast list */
1324 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
1327 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) {
1329 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are
1330 * set, or if we have been asked to deal with more than 9 multicast
1331 * addresses. To do this: set MPE and PME in SWC1
1333 XE_SELECT_PAGE(0x42);
1334 XE_OUTB(XE_SWC1, 0x06);
1336 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) {
1338 * Program the filters for up to 9 addresses
1340 XE_SELECT_PAGE(0x42);
1341 XE_OUTB(XE_SWC1, 0x01);
1342 XE_SELECT_PAGE(0x40);
1343 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE);
1344 /*xe_reg_dump(scp);*/
1346 /*xe_reg_dump(scp);*/
1347 XE_SELECT_PAGE(0x40);
1348 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
1352 * No multicast operation (default)
1354 XE_SELECT_PAGE(0x42);
1355 XE_OUTB(XE_SWC1, 0);
1362 * Set up all on-chip addresses (for multicast). AFAICS, there are 10
1363 * of these things; the first is our MAC address, the other 9 are mcast
1364 * addresses, padded with the MAC address if there aren't enough.
1365 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be
1366 * XXX - doing much the same as the Linux code, which is weird enough that
1367 * XXX - it's probably right (despite my earlier comments to the contrary).
1370 xe_setaddrs(struct xe_softc *scp) {
1371 struct ifmultiaddr *ifma;
1373 u_int8_t page, slot, byte, i;
1375 ifma = LIST_FIRST(&scp->arpcom.ac_if.if_multiaddrs);
1377 XE_SELECT_PAGE(page = 0x50);
1379 for (slot = 0, byte = 8; slot < 10; slot++) {
1382 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1384 while (ifma != NULL && ifma->ifma_addr->sa_family != AF_LINK)
1385 ifma = LIST_NEXT(ifma, ifma_link);
1387 addr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
1389 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1392 for (i = 0; i < 6; i++, byte++) {
1395 printf(":%x", addr[i]);
1397 if_printf(scp->ifp, "individual addresses %d: %x", slot, addr[0]);
1403 XE_SELECT_PAGE(page);
1407 XE_OUTB(byte, addr[5 - i]);
1409 XE_OUTB(byte, addr[i]);
1421 * Write an outgoing packet to the card using programmed I/O.
1424 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1426 u_int16_t len, pad, free, ok;
1428 u_int8_t savebyte[2], wantbyte;
1430 /* Get total packet length */
1431 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1433 /* Packets < minimum length may need to be padded out */
1435 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
1436 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1;
1437 len = ETHER_MIN_LEN - ETHER_CRC_LEN;
1440 /* Check transmit buffer space */
1442 XE_OUTW(XE_TRS, len+2);
1443 free = XE_INW(XE_TSO);
1446 if (free <= len + 2)
1449 /* Send packet length to card */
1450 XE_OUTW(XE_EDP, len);
1453 * Write packet to card using PIO (code stolen from the ed driver)
1456 while (mbp != NULL) {
1459 data = mtod(mbp, caddr_t);
1460 if (wantbyte) { /* Finish the last word */
1461 savebyte[1] = *data;
1462 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1467 if (len > 1) { /* Output contiguous words */
1468 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1473 if (len == 1) { /* Save last byte, if necessary */
1474 savebyte[0] = *data;
1480 if (wantbyte) /* Last byte for odd-length packets */
1481 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1484 * For CE3 cards, just tell 'em to send -- apparently the card will pad out
1485 * short packets with random cruft. Otherwise, write nonsense words to fill
1486 * out the packet. I guess it is then sent automatically (?)
1489 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR);
1492 XE_OUTW(XE_EDP, 0xdead);
1501 * Compute the 32-bit Ethernet CRC for the given buffer.
1504 xe_compute_crc(u_int8_t *data, int len) {
1505 u_int32_t crc = 0xffffffff;
1506 u_int32_t poly = 0x04c11db6;
1507 u_int8_t current, crc31, bit;
1510 for (i = 0; i < len; i++) {
1512 for (k = 1; k <= 8; k++) {
1513 if (crc & 0x80000000) {
1519 bit = crc31 ^ (current & 0x01);
1523 crc = (crc ^ poly)|1;
1532 * Convert a CRC into an index into the multicast hash table. What we do is
1533 * take the most-significant 6 bits of the CRC, reverse them, and use that as
1534 * the bit number in the hash table. Bits 5:3 of the result give the byte
1535 * within the table (0-7); bits 2:0 give the bit number within that byte (also
1536 * 0-7), ie. the number of shifts needed to get it into the lsb position.
1539 xe_compute_hashbit(u_int32_t crc) {
1540 u_int8_t hashbit = 0;
1543 for (i = 0; i < 6; i++) {
1545 if (crc & 0x80000000) {
1550 return (hashbit >> 2);
1557 /**************************************************************
1559 * M I I F U N C T I O N S *
1561 **************************************************************/
1564 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1565 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1566 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1567 * XXX - some kind of common MII-handling code, shared by all drivers. But
1568 * XXX - that's a whole other mission.
1570 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1571 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1575 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1578 xe_mii_sync(struct xe_softc *scp) {
1582 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1584 for (i = 0; i < 32; i++) {
1585 XE_MII_SET(XE_MII_CLK);
1587 XE_MII_CLR(XE_MII_CLK);
1594 * Look for a MII-compliant PHY. If we find one, reset it.
1597 xe_mii_init(struct xe_softc *scp) {
1600 status = xe_phy_readreg(scp, PHY_BMSR);
1601 if ((status & 0xff00) != 0x7800) {
1603 if_printf(scp->ifp, "no PHY found, %0x\n", status);
1609 if_printf(scp->ifp, "PHY OK!\n");
1613 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1615 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1623 * Clock a series of bits through the MII.
1626 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1630 XE_MII_CLR(XE_MII_CLK);
1632 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1634 XE_MII_SET(XE_MII_WRD);
1636 XE_MII_CLR(XE_MII_WRD);
1639 XE_MII_CLR(XE_MII_CLK);
1641 XE_MII_SET(XE_MII_CLK);
1647 * Read an PHY register through the MII.
1650 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1656 * Set up frame for RX.
1658 frame->mii_stdelim = XE_MII_STARTDELIM;
1659 frame->mii_opcode = XE_MII_READOP;
1660 frame->mii_turnaround = 0;
1661 frame->mii_data = 0;
1664 XE_OUTB(XE_GPR2, 0);
1667 * Turn on data xmit.
1669 XE_MII_SET(XE_MII_DIR);
1674 * Send command/address info.
1676 xe_mii_send(scp, frame->mii_stdelim, 2);
1677 xe_mii_send(scp, frame->mii_opcode, 2);
1678 xe_mii_send(scp, frame->mii_phyaddr, 5);
1679 xe_mii_send(scp, frame->mii_regaddr, 5);
1682 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1684 XE_MII_SET(XE_MII_CLK);
1687 /* Turn off xmit. */
1688 XE_MII_CLR(XE_MII_DIR);
1691 XE_MII_CLR(XE_MII_CLK);
1693 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1694 XE_MII_SET(XE_MII_CLK);
1698 * Now try reading data bits. If the ack failed, we still
1699 * need to clock through 16 cycles to keep the PHY(s) in sync.
1702 for(i = 0; i < 16; i++) {
1703 XE_MII_CLR(XE_MII_CLK);
1705 XE_MII_SET(XE_MII_CLK);
1711 for (i = 0x8000; i; i >>= 1) {
1712 XE_MII_CLR(XE_MII_CLK);
1715 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1716 frame->mii_data |= i;
1719 XE_MII_SET(XE_MII_CLK);
1725 XE_MII_CLR(XE_MII_CLK);
1727 XE_MII_SET(XE_MII_CLK);
1739 * Write to a PHY register through the MII.
1742 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1747 * Set up frame for TX.
1749 frame->mii_stdelim = XE_MII_STARTDELIM;
1750 frame->mii_opcode = XE_MII_WRITEOP;
1751 frame->mii_turnaround = XE_MII_TURNAROUND;
1756 * Turn on data output.
1758 XE_MII_SET(XE_MII_DIR);
1762 xe_mii_send(scp, frame->mii_stdelim, 2);
1763 xe_mii_send(scp, frame->mii_opcode, 2);
1764 xe_mii_send(scp, frame->mii_phyaddr, 5);
1765 xe_mii_send(scp, frame->mii_regaddr, 5);
1766 xe_mii_send(scp, frame->mii_turnaround, 2);
1767 xe_mii_send(scp, frame->mii_data, 16);
1770 XE_MII_SET(XE_MII_CLK);
1772 XE_MII_CLR(XE_MII_CLK);
1778 XE_MII_CLR(XE_MII_DIR);
1787 * Read a register from the PHY.
1790 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
1791 struct xe_mii_frame frame;
1793 bzero((char *)&frame, sizeof(frame));
1795 frame.mii_phyaddr = 0;
1796 frame.mii_regaddr = reg;
1797 xe_mii_readreg(scp, &frame);
1799 return(frame.mii_data);
1804 * Write to a PHY register.
1807 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
1808 struct xe_mii_frame frame;
1810 bzero((char *)&frame, sizeof(frame));
1812 frame.mii_phyaddr = 0;
1813 frame.mii_regaddr = reg;
1814 frame.mii_data = data;
1815 xe_mii_writereg(scp, &frame);
1823 * A bit of debugging code.
1826 xe_mii_dump(struct xe_softc *scp) {
1831 if_printf(scp->ifp, "MII registers: ");
1832 for (i = 0; i < 2; i++) {
1833 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1835 for (i = 4; i < 7; i++) {
1836 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1844 xe_reg_dump(struct xe_softc *scp) {
1849 if_printf(scp->ifp, "Common registers: ");
1850 for (i = 0; i < 8; i++) {
1851 printf(" %2.2x", XE_INB(i));
1855 for (page = 0; page <= 8; page++) {
1856 if_printf(scp->ifp, "Register page %2.2x: ", page);
1857 XE_SELECT_PAGE(page);
1858 for (i = 8; i < 16; i++) {
1859 printf(" %2.2x", XE_INB(i));
1864 for (page = 0x10; page < 0x5f; page++) {
1865 if ((page >= 0x11 && page <= 0x3f) ||
1867 (page >= 0x43 && page <= 0x4f) ||
1870 if_printf(scp->ifp, "Register page %2.2x: ", page);
1871 XE_SELECT_PAGE(page);
1872 for (i = 8; i < 16; i++) {
1873 printf(" %2.2x", XE_INB(i));
1883 xe_activate(device_t dev)
1885 struct xe_softc *sc = device_get_softc(dev);
1889 sc->port_rid = 0; /* 0 is managed by pccard */
1890 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1891 &sc->port_rid, 0, ~0, 16, RF_ACTIVE);
1894 * Find a 16 byte aligned ioport for the card.
1897 device_printf(dev, "Finding an aligned port for RealPort\n");
1898 #endif /* XE_DEBUG */
1899 sc->port_rid = 1; /* 0 is managed by pccard */
1902 sc->port_res = bus_alloc_resource(dev,
1903 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
1905 if (sc->port_res == 0)
1906 break; /* we failed */
1907 if ((rman_get_start(sc->port_res) & 0xf) == 0)
1909 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1911 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
1914 device_printf(dev, "port 0x%0lx, size 0x%0lx\n",
1915 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1916 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid));
1917 #endif /* XE_DEBUG */
1919 if (!sc->port_res) {
1921 device_printf(dev, "Cannot allocate ioport\n");
1927 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
1931 device_printf(dev, "Cannot allocate irq\n");
1937 sc->bst = rman_get_bustag(sc->port_res);
1938 sc->bsh = rman_get_bushandle(sc->port_res);
1943 xe_deactivate(device_t dev)
1945 struct xe_softc *sc = device_get_softc(dev);
1948 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1952 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,