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 1.2 2003/06/17 04:28:33 dillon 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>
123 #include <sys/module.h>
126 #include <machine/bus.h>
127 #include <machine/resource.h>
128 #include <sys/rman.h>
130 #include <net/ethernet.h>
132 #include <net/if_arp.h>
133 #include <net/if_dl.h>
134 #include <net/if_media.h>
135 #include <net/if_mib.h>
138 #include <dev/pccard/pccardvar.h>
141 #include <dev/xe/if_xereg.h>
142 #include <dev/xe/if_xevar.h>
144 #include <machine/clock.h>
147 * MII command structure
149 struct xe_mii_frame {
150 u_int8_t mii_stdelim;
152 u_int8_t mii_phyaddr;
153 u_int8_t mii_regaddr;
154 u_int8_t mii_turnaround;
159 * Media autonegotiation progress constants
161 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
162 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
163 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
164 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
165 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
169 * Prototypes start here
171 static int xe_probe (device_t dev);
172 static int xe_attach (device_t dev);
173 static int xe_detach (device_t dev);
174 static int xe_activate (device_t dev);
175 static void xe_deactivate (device_t dev);
176 static void xe_init (void *xscp);
177 static void xe_start (struct ifnet *ifp);
178 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data);
179 static void xe_watchdog (struct ifnet *ifp);
180 static int xe_media_change (struct ifnet *ifp);
181 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp);
182 static timeout_t xe_setmedia;
183 static void xe_hard_reset (struct xe_softc *scp);
184 static void xe_soft_reset (struct xe_softc *scp);
185 static void xe_stop (struct xe_softc *scp);
186 static void xe_enable_intr (struct xe_softc *scp);
187 static void xe_disable_intr (struct xe_softc *scp);
188 static void xe_setmulti (struct xe_softc *scp);
189 static void xe_setaddrs (struct xe_softc *scp);
190 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
191 static u_int32_t xe_compute_crc (u_int8_t *data, int len);
192 static int xe_compute_hashbit (u_int32_t crc);
197 static void xe_mii_sync (struct xe_softc *scp);
198 static int xe_mii_init (struct xe_softc *scp);
199 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt);
200 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame);
201 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame);
202 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg);
203 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data);
206 * Debug functions -- uncomment for VERY verbose dignostic information.
207 * Set to 1 for less verbose information
209 /* #define XE_DEBUG 2 */
211 #define XE_REG_DUMP(scp) xe_reg_dump((scp))
212 #define XE_MII_DUMP(scp) xe_mii_dump((scp))
213 static void xe_reg_dump (struct xe_softc *scp);
214 static void xe_mii_dump (struct xe_softc *scp);
216 #define XE_REG_DUMP(scp)
217 #define XE_MII_DUMP(scp)
221 * Fixing for RealPort cards - they need a little furtling to get the
225 xe_cem56fix(device_t dev)
227 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev);
229 bus_space_handle_t bsh;
235 device_printf(dev, "Hacking your Realport, master\n");
239 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n",
240 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
241 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid));
245 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE);
248 device_printf(dev, "Can't map in attribute memory\n");
253 bsh = rman_get_bushandle(r);
254 bst = rman_get_bustag(r);
256 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
259 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL |
260 DINGO_ECOR_INT_ENABLE |
261 DINGO_ECOR_IOB_ENABLE |
262 DINGO_ECOR_ETH_ENABLE);
263 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid);
264 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff);
265 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff);
267 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT);
268 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL |
270 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00);
271 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00);
272 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00);
274 bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
281 * PCMCIA probe routine.
282 * Probe and identify the device. Called by the slot manager when the card is
283 * inserted or the machine wakes up from suspend mode. Assmes that the slot
284 * structure has been initialised already.
287 xe_probe(device_t dev)
289 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev);
291 bus_space_handle_t bsh;
293 u_char ver_str[CISTPL_BUFSIZE>>1];
302 device_printf(dev, "xe: Probing\n");
307 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE);
310 device_printf(dev, "Can't map in cis\n");
314 bsh = rman_get_bushandle(r);
315 bst = rman_get_bustag(r);
318 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
321 /* Grep through CIS looking for relevant tuples */
325 u_int8_t rev, media, prod;
327 switch (CISTPL_TYPE(buf)) {
329 case 0x15: /* Grab version string (needed to ID some weird CE2's) */
331 device_printf(dev, "Got version string (0x15)\n");
333 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++));
335 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf);
339 case 0x20: /* Figure out what type of card we have */
341 device_printf(dev, "Got card ID (0x20)\n");
343 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8);
344 rev = CISTPL_DATA(buf, 2);
345 media = CISTPL_DATA(buf, 3);
346 prod = CISTPL_DATA(buf, 4);
348 switch (vendor) { /* Get vendor ID */
350 scp->vendor = "Xircom"; break;
353 scp->vendor = "Compaq"; break;
355 scp->vendor = "Intel"; break;
357 scp->vendor = "Unknown";
360 if (!((prod & 0x40) && (media & 0x01))) {
362 device_printf(dev, "Not a PCMCIA Ethernet card!\n");
364 rc = ENODEV; /* Not a PCMCIA Ethernet device */
366 if (media & 0x10) { /* Ethernet/modem cards */
368 device_printf(dev, "Card is Ethernet/modem combo\n");
371 switch (prod & 0x0f) {
373 scp->card_type = "CEM"; break;
376 scp->card_type = "CEM2"; break;
379 scp->card_type = "CEM3"; break;
382 scp->card_type = "CEM33"; break;
385 scp->card_type = "CEM56M"; break;
387 case 7: /* Some kind of RealPort card */
390 scp->card_type = "CEM56"; break;
394 } else { /* Ethernet-only cards */
396 device_printf(dev, "Card is Ethernet only\n");
398 switch (prod & 0x0f) {
400 scp->card_type = "CE"; break;
403 scp->card_type = "CE2"; break;
406 scp->card_type = "CE3"; break;
415 case 0x22: /* Get MAC address */
416 if ((CISTPL_LEN(buf) == 8) &&
417 (CISTPL_DATA(buf, 0) == 0x04) &&
418 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) {
420 device_printf(dev, "Got MAC address (0x22)\n");
422 for (i = 0; i < ETHER_ADDR_LEN; i++)
423 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2);
431 if (CISTPL_TYPE(buf) == 0xff)
433 /* Skip to next tuple */
434 buf += ((CISTPL_LEN(buf) + 2) << 1);
439 bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
441 /* Die now if something went wrong above */
445 /* Check for certain strange CE2's that look like CE's */
446 if (strcmp(scp->card_type, "CE") == 0) {
447 u_char *str = ver_str;
449 device_printf(dev, "Checking for weird CE2 string\n");
451 str += strlen(str) + 1; /* Skip forward to 3rd version string */
452 str += strlen(str) + 1;
453 str += strlen(str) + 1;
454 for (i = 0; i < strlen(str) - 2; i++) {
455 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */
456 scp->card_type = "CE2";
461 /* Reject unsupported cards */
462 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) {
463 device_printf(dev, "Sorry, your %s card is not supported :(\n",
473 * The device entry is being removed, probably because someone ejected the
474 * card. The interface should have been brought down manually before calling
475 * this function; if not you may well lose packets. In any case, I shut down
476 * the card and the interface, and hope for the best.
479 xe_detach(device_t dev) {
480 struct xe_softc *sc = device_get_softc(dev);
482 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
483 ether_ifdetach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED);
492 xe_attach (device_t dev) {
493 struct xe_softc *scp = device_get_softc(dev);
497 device_printf(dev, "attach\n");
500 if ((err = xe_activate(dev)) != 0)
503 /* Fill in some private data */
504 scp->ifp = &scp->arpcom.ac_if;
505 scp->ifm = &scp->ifmedia;
506 scp->autoneg_status = 0;
508 /* Hack RealPorts into submission */
509 if (scp->dingo && xe_cem56fix(dev) < 0) {
510 device_printf(dev, "Unable to fix your RealPort\n");
515 /* Hopefully safe to read this here */
517 scp->version = XE_INB(XE_BOV);
520 /* Initialise the ifnet structure */
521 if (!scp->ifp->if_name) {
522 scp->ifp->if_softc = scp;
523 scp->ifp->if_name = "xe";
524 scp->ifp->if_unit = device_get_unit(dev);
525 scp->ifp->if_timer = 0;
526 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
527 scp->ifp->if_linkmib = &scp->mibdata;
528 scp->ifp->if_linkmiblen = sizeof scp->mibdata;
529 scp->ifp->if_output = ether_output;
530 scp->ifp->if_start = xe_start;
531 scp->ifp->if_ioctl = xe_ioctl;
532 scp->ifp->if_watchdog = xe_watchdog;
533 scp->ifp->if_init = xe_init;
534 scp->ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
537 /* Initialise the ifmedia structure */
538 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
539 callout_handle_init(&scp->chand);
542 * Fill in supported media types. Some cards _do_ support full duplex
543 * operation, but this driver doesn't, yet. Therefore we leave those modes
544 * out of the list. We support some form of autoselection in all cases.
547 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
548 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
551 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
552 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
554 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
556 /* Default is to autoselect best supported media type */
557 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
559 /* Print some useful information */
560 device_printf(dev, "%s %s, bonding version %#x%s%s\n",
564 scp->mohawk ? ", 100Mbps capable" : "",
565 scp->modem ? ", with modem" : "");
567 XE_SELECT_PAGE(0x10);
568 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n",
571 XE_INW(XE_VendorID));
574 XE_SELECT_PAGE(0x45);
575 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV));
578 /* Print MAC address */
579 device_printf(dev, "Ethernet address %6D\n", scp->arpcom.ac_enaddr, ":");
581 /* Attach the interface */
582 ether_ifattach(scp->ifp, ETHER_BPF_SUPPORTED);
590 * Initialize device. Completes the reset procedure on the card and starts
591 * output. If there's an autonegotiation in progress we DON'T do anything;
592 * the media selection code will call us again when it's done.
595 xe_init(void *xscp) {
596 struct xe_softc *scp = xscp;
600 device_printf(scp->dev, "init\n");
603 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return;
605 /* Reset transmitter flags */
608 scp->tx_collisions = 0;
609 scp->ifp->if_timer = 0;
613 XE_SELECT_PAGE(0x42);
614 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */
617 * Set the 'local memory dividing line' -- splits the 32K card memory into
618 * 8K for transmit buffers and 24K for receive. This is done automatically
619 * on newer revision cards.
621 if (scp->srev != 1) {
623 XE_OUTW(XE_RBS, 0x2000);
626 /* Set up multicast addresses */
629 /* Fix the data offset register -- reset leaves it off-by-one */
631 XE_OUTW(XE_DO, 0x2000);
634 * Set MAC interrupt masks and clear status regs. The bit names are direct
635 * from the Linux code; I have no idea what most of them do.
637 XE_SELECT_PAGE(0x40); /* Bit 7..0 */
638 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
639 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
640 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */
641 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
642 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
643 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
646 * Check for an in-progress autonegotiation. If one is active, just set
647 * IFF_RUNNING and return. The media selection code will call us again when
650 if (scp->autoneg_status) {
651 scp->ifp->if_flags |= IFF_RUNNING;
654 /* Enable receiver, put MAC online */
655 XE_SELECT_PAGE(0x40);
656 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
658 /* Set up IMR, enable interrupts */
661 /* Attempt to start output */
662 scp->ifp->if_flags |= IFF_RUNNING;
663 scp->ifp->if_flags &= ~IFF_OACTIVE;
672 * Start output on interface. We make two assumptions here:
673 * 1) that the current priority is set to splimp _before_ this code
674 * is called *and* is returned to the appropriate priority after
676 * 2) that the IFF_OACTIVE flag is checked before this code is called
677 * (i.e. that the output part of the interface is idle)
680 xe_start(struct ifnet *ifp) {
681 struct xe_softc *scp = ifp->if_softc;
685 * Loop while there are packets to be sent, and space to send them.
688 IF_DEQUEUE(&ifp->if_snd, mbp); /* Suck a packet off the send queue */
692 * We are using the !OACTIVE flag to indicate to the outside world that
693 * we can accept an additional packet rather than that the transmitter
694 * is _actually_ active. Indeed, the transmitter may be active, but if
695 * we haven't filled all the buffers with data then we still want to
698 ifp->if_flags &= ~IFF_OACTIVE;
702 if (xe_pio_write_packet(scp, mbp) != 0) {
703 IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */
704 ifp->if_flags |= IFF_OACTIVE;
708 /* Tap off here if there is a bpf listener */
711 device_printf(scp->dev, "sending output packet to BPF\n");
716 ifp->if_timer = 5; /* In case we don't hear from the card again */
725 * Process an ioctl request. Adapted from the ed driver.
728 xe_ioctl (register struct ifnet *ifp, u_long command, caddr_t data) {
729 struct xe_softc *scp;
742 error = ether_ioctl(ifp, command, data);
747 * If the interface is marked up and stopped, then start it. If it is
748 * marked down and running, then stop it.
750 if (ifp->if_flags & IFF_UP) {
751 if (!(ifp->if_flags & IFF_RUNNING)) {
758 if (ifp->if_flags & IFF_RUNNING)
765 * Multicast list has (maybe) changed; set the hardware filter
766 * accordingly. This also serves to deal with promiscuous mode if we have
767 * a BPF listener active.
776 * Someone wants to get/set media options.
778 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
792 * Card interrupt handler.
794 * This function is probably more complicated than it needs to be, as it
795 * attempts to deal with the case where multiple packets get sent between
796 * interrupts. This is especially annoying when working out the collision
797 * stats. Not sure whether this case ever really happens or not (maybe on a
798 * slow/heavily loaded machine?) so it's probably best to leave this like it
801 * Note that the crappy PIO used to get packets on and off the card means that
802 * you will spend a lot of time in this routine -- I can get my P150 to spend
803 * 90% of its time servicing interrupts if I really hammer the network. Could
804 * fix this, but then you'd start dropping/losing packets. The moral of this
805 * story? If you want good network performance _and_ some cycles left over to
806 * get your work done, don't buy a Xircom card. Or convince them to tell me
807 * how to do memory-mapped I/O :)
812 struct xe_softc *scp = (struct xe_softc *) xscp;
815 u_int16_t rx_bytes, rxs, txs;
816 u_int8_t psr, isr, esr, rsr;
818 ifp = &scp->arpcom.ac_if;
819 rx_bytes = 0; /* Bytes received on this interrupt */
820 result = 0; /* Set true if the interrupt is for us */
823 XE_OUTB(XE_CR, 0); /* Disable interrupts */
826 psr = XE_INB(XE_PR); /* Stash the current register page */
829 * Read ISR to see what caused this interrupt. Note that this clears the
830 * ISR on CE2 type cards.
832 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) {
834 result = 1; /* This device did generate an int */
835 esr = XE_INB(XE_ESR); /* Read the other status registers */
836 XE_SELECT_PAGE(0x40);
837 rxs = XE_INB(XE_RST0);
838 XE_OUTB(XE_RST0, ~rxs & 0xff);
839 txs = XE_INB(XE_TXST0);
840 txs |= XE_INB(XE_TXST1) << 8;
841 XE_OUTB(XE_TXST0, 0);
842 XE_OUTB(XE_TXST1, 0);
846 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs);
850 * Handle transmit interrupts
852 if (isr & XE_ISR_TX_PACKET) {
853 u_int8_t new_tpr, sent;
855 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */
856 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */
858 sent = new_tpr - scp->tx_tpr;
860 if (sent > 0) { /* Packets sent since last interrupt */
861 scp->tx_tpr = new_tpr;
862 scp->tx_queued -= sent;
863 ifp->if_opackets += sent;
864 ifp->if_collisions += scp->tx_collisions;
867 * Collision stats are a PITA. If multiples frames have been sent, we
868 * distribute any outstanding collision count equally amongst them.
869 * However, if we're missing interrupts we're quite likely to also
870 * miss some collisions; thus the total count will be off anyway.
871 * Likewise, if we miss a frame dropped due to excessive collisions
872 * any outstanding collisions count will be held against the next
873 * frame to be successfully sent. Hopefully it averages out in the
875 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT!
877 switch (scp->tx_collisions) {
881 scp->mibdata.dot3StatsSingleCollisionFrames++;
882 scp->mibdata.dot3StatsCollFrequencies[0]++;
886 scp->mibdata.dot3StatsMultipleCollisionFrames++;
887 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++;
889 else { /* Distribute across multiple frames */
890 scp->mibdata.dot3StatsMultipleCollisionFrames += sent;
892 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent;
894 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent;
897 scp->tx_collisions = 0;
900 ifp->if_flags &= ~IFF_OACTIVE;
902 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */
903 ifp->if_collisions += 16;
905 scp->tx_collisions = 0;
906 scp->mibdata.dot3StatsExcessiveCollisions++;
907 scp->mibdata.dot3StatsMultipleCollisionFrames++;
908 scp->mibdata.dot3StatsCollFrequencies[15]++;
909 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
911 if (txs & 0x0040) /* Transmit aborted -- probably collisions */
912 scp->tx_collisions++;
916 * Handle receive interrupts
918 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
920 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) {
921 struct ether_header *ehp;
925 len = XE_INW(XE_RBC);
932 * Limit the amount of time we spend in this loop, dropping packets if
933 * necessary. The Linux code does this with considerably more
934 * finesse, adjusting the threshold dynamically.
936 if ((rx_bytes += len) > 22000) {
938 scp->mibData.dot3StatsMissedFrames++;
939 XE_OUTW(XE_DO, 0x8000);
947 MGETHDR(mbp, M_DONTWAIT, MT_DATA); /* Allocate a header mbuf */
949 mbp->m_pkthdr.rcvif = ifp;
950 mbp->m_pkthdr.len = mbp->m_len = len;
953 * If the mbuf header isn't big enough for the packet, attach an
954 * mbuf cluster to hold it. The +2 is to allow for the nasty little
955 * alignment hack below.
957 if (len + 2 > MHLEN) {
958 MCLGET(mbp, M_DONTWAIT);
959 if ((mbp->m_flags & M_EXT) == 0) {
968 * The Ethernet header is 14 bytes long; thus the actual packet data
969 * won't be 32-bit aligned when it's dumped into the mbuf. We
970 * offset everything by 2 bytes to fix this. Apparently the
971 * alignment is important for NFS, damn its eyes.
974 ehp = mtod(mbp, struct ether_header *);
977 * Now get the packet, including the Ethernet header and trailer (?)
978 * We use programmed I/O, because we don't know how to do shared
979 * memory with these cards. So yes, it's real slow, and heavy on
980 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming).
982 if (scp->srev == 0) { /* Workaround a bug in old cards */
986 rhs = XE_INW(XE_RHSA);
989 rhs += 3; /* Skip control info */
994 if (rhs + len > 0x8000) {
998 * XXX - This i-- seems very wrong, but it's what the Linux guys
999 * XXX - do. Need someone with an old CE2 to test this for me.
1000 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll
1001 * XXX - fix it? It seems as though the previous version would
1002 * XXX - have caused an infinite loop (what, another one?).
1004 for (i = 0; i < len; i++, rhs++) {
1005 ((char *)ehp)[i] = XE_INB(XE_EDP);
1006 if (rhs == 0x8000) {
1013 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
1014 (u_int16_t *) ehp, len >> 1);
1017 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
1018 (u_int16_t *) ehp, len >> 1);
1020 /* Deliver packet to upper layers */
1022 mbp->m_pkthdr.len = mbp->m_len = len - ETHER_HDR_LEN;
1023 mbp->m_data += ETHER_HDR_LEN; /* Strip off Ethernet header */
1024 ether_input(ifp, ehp, mbp); /* Send the packet on its way */
1025 ifp->if_ipackets++; /* Success! */
1027 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */
1030 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */
1031 scp->mibdata.dot3StatsFrameTooLongs++;
1034 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */
1035 scp->mibdata.dot3StatsFCSErrors++;
1038 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */
1039 scp->mibdata.dot3StatsAlignmentErrors++;
1043 if (rxs & 0x10) { /* Receiver overrun */
1044 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
1046 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
1050 XE_SELECT_PAGE(psr); /* Restore saved page */
1051 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */
1053 /* Could force an int here, instead of dropping packets? */
1054 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */
1061 * Device timeout/watchdog routine. Called automatically if we queue a packet
1062 * for transmission but don't get an interrupt within a specified timeout
1063 * (usually 5 seconds). When this happens we assume the worst and reset the
1067 xe_watchdog(struct ifnet *ifp) {
1068 struct xe_softc *scp = ifp->if_softc;
1070 device_printf(scp->dev, "watchdog timeout; resetting card\n");
1072 ifp->if_oerrors += scp->tx_queued;
1081 * Change media selection.
1084 xe_media_change(struct ifnet *ifp) {
1085 struct xe_softc *scp = ifp->if_softc;
1088 printf("xe%d: media_change\n", ifp->if_unit);
1091 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
1095 * Some card/media combos aren't always possible -- filter those out here.
1097 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
1098 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
1108 * Return current media selection.
1111 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
1114 printf("xe%d: media_status\n", ifp->if_unit);
1117 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
1124 * Select active media.
1126 static void xe_setmedia(void *xscp) {
1127 struct xe_softc *scp = xscp;
1128 u_int16_t bmcr, bmsr, anar, lpar;
1131 device_printf(scp->dev, "setmedia\n");
1134 /* Cancel any pending timeout */
1135 untimeout(xe_setmedia, scp, scp->chand);
1136 xe_disable_intr(scp);
1139 scp->media = IFM_ETHER;
1140 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
1142 case IFM_AUTO: /* Autoselect media */
1143 scp->media = IFM_ETHER|IFM_AUTO;
1146 * Autoselection is really awful. It goes something like this:
1148 * Wait until the transmitter goes idle (2sec timeout).
1150 * IF a 100Mbit PHY exists
1151 * Start NWAY autonegotiation (3.5sec timeout)
1153 * Select 100baseTX or 10baseT, whichever was detected
1156 * IF a 100Mbit PHY exists
1157 * Try to force a 100baseTX link (3sec timeout)
1166 * IF nothing selected so far
1167 * IF a 100Mbit PHY exists
1170 * Select 10baseT or 10base2, whichever is connected
1174 switch (scp->autoneg_status) {
1176 case XE_AUTONEG_NONE:
1178 device_printf(scp->dev, "Waiting for idle transmitter\n");
1180 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE;
1181 scp->autoneg_status = XE_AUTONEG_WAITING;
1182 scp->chand = timeout(xe_setmedia, scp, hz * 2);
1185 case XE_AUTONEG_WAITING:
1189 device_printf(scp->dev, "Starting autonegotiation\n");
1191 bmcr = xe_phy_readreg(scp, PHY_BMCR);
1192 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
1193 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1194 anar = xe_phy_readreg(scp, PHY_ANAR);
1195 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL);
1196 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF;
1197 xe_phy_writereg(scp, PHY_ANAR, anar);
1198 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
1199 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1200 scp->autoneg_status = XE_AUTONEG_STARTED;
1201 scp->chand = timeout(xe_setmedia, scp, hz * 7/2);
1205 scp->autoneg_status = XE_AUTONEG_FAIL;
1209 case XE_AUTONEG_STARTED:
1210 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1211 lpar = xe_phy_readreg(scp, PHY_LPAR);
1212 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) {
1214 device_printf(scp->dev, "Autonegotiation complete!\n");
1217 * XXX - Shouldn't have to do this, but (on my hub at least) the
1218 * XXX - transmitter won't work after a successful autoneg. So we see
1219 * XXX - what the negotiation result was and force that mode. I'm
1220 * XXX - sure there is an easy fix for this.
1222 if (lpar & PHY_LPAR_100BTXHALF) {
1223 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1226 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1227 scp->media = IFM_ETHER|IFM_100_TX;
1228 scp->autoneg_status = XE_AUTONEG_NONE;
1232 * XXX - Bit of a hack going on in here.
1233 * XXX - This is derived from Ken Hughes patch to the Linux driver
1234 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
1235 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
1236 * XXX - these are the things we need to find out.
1238 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1241 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1242 XE_SELECT_PAGE(0x42);
1243 XE_OUTB(XE_SWC1, 0x80);
1244 scp->media = IFM_ETHER|IFM_10_T;
1245 scp->autoneg_status = XE_AUTONEG_NONE;
1247 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
1248 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
1253 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n");
1258 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1259 scp->autoneg_status = XE_AUTONEG_100TX;
1260 scp->chand = timeout(xe_setmedia, scp, hz * 3);
1264 scp->autoneg_status = XE_AUTONEG_FAIL;
1269 case XE_AUTONEG_100TX:
1270 (void)xe_phy_readreg(scp, PHY_BMSR);
1271 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1272 if (bmsr & PHY_BMSR_LINKSTAT) {
1274 device_printf(scp->dev, "Got 100baseTX link!\n");
1278 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1279 scp->media = IFM_ETHER|IFM_100_TX;
1280 scp->autoneg_status = XE_AUTONEG_NONE;
1284 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n");
1287 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1289 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1290 scp->autoneg_status = XE_AUTONEG_FAIL;
1296 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1297 * either autonegotiation failed, or never got started to begin with. In
1298 * either case, select a suitable 10Mbit media and hope it works. We
1299 * don't need to reset the card again, since it will have been done
1300 * already by the big switch above.
1302 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1304 device_printf(scp->dev, "Selecting 10baseX\n");
1307 XE_SELECT_PAGE(0x42);
1308 XE_OUTB(XE_SWC1, 0x80);
1309 scp->media = IFM_ETHER|IFM_10_T;
1310 scp->autoneg_status = XE_AUTONEG_NONE;
1314 XE_OUTB(XE_GPR0, 4);
1316 XE_SELECT_PAGE(0x42);
1317 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0);
1318 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1319 scp->autoneg_status = XE_AUTONEG_NONE;
1326 * If a specific media has been requested, we just reset the card and
1327 * select it (one small exception -- if 100baseTX is requested by there is
1328 * no PHY, we fall back to 10baseT operation).
1330 case IFM_100_TX: /* Force 100baseTX */
1334 device_printf(scp->dev, "Selecting 100baseTX\n");
1336 XE_SELECT_PAGE(0x42);
1337 XE_OUTB(XE_SWC1, 0);
1338 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1340 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1341 scp->media |= IFM_100_TX;
1346 case IFM_10_T: /* Force 10baseT */
1349 device_printf(scp->dev, "Selecting 10baseT\n");
1352 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1354 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1356 XE_SELECT_PAGE(0x42);
1357 XE_OUTB(XE_SWC1, 0x80);
1358 scp->media |= IFM_10_T;
1364 device_printf(scp->dev, "Selecting 10base2\n");
1366 XE_SELECT_PAGE(0x42);
1367 XE_OUTB(XE_SWC1, 0xc0);
1368 scp->media |= IFM_10_2;
1374 * Finally, the LEDs are set to match whatever media was chosen and the
1375 * transmitter is unblocked.
1378 device_printf(scp->dev, "Setting LEDs\n");
1381 switch (IFM_SUBTYPE(scp->media)) {
1384 XE_OUTB(XE_LED, 0x3b);
1386 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1390 XE_OUTB(XE_LED, 0x3a);
1394 /* Restart output? */
1395 scp->ifp->if_flags &= ~IFF_OACTIVE;
1401 * Hard reset (power cycle) the card.
1404 xe_hard_reset(struct xe_softc *scp) {
1408 device_printf(scp->dev, "hard_reset\n");
1414 * Power cycle the card.
1417 XE_OUTB(XE_GPR1, 0); /* Power off */
1421 XE_OUTB(XE_GPR1, 1); /* And back on again */
1423 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */
1432 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller
1433 * are powered up, sets the silicon revision number in softc, disables
1434 * interrupts and checks for the prescence of a 100Mbit PHY. This should
1435 * leave us in a position where we can access the PHY and do media
1436 * selection. The function imposes a 0.5s delay while the hardware powers up.
1439 xe_soft_reset(struct xe_softc *scp) {
1443 device_printf(scp->dev, "soft_reset\n");
1449 * Reset the card, (again).
1452 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
1459 * set GP1 and GP2 as outputs (bits 2 & 3)
1460 * set GP1 low to power on the ML6692 (bit 0)
1461 * set GP2 high to power on the 10Mhz chip (bit 1)
1464 XE_OUTB(XE_GPR0, 0x0e);
1468 * Wait for everything to wake up.
1473 * Get silicon revision number.
1477 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
1479 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
1481 device_printf(scp->dev, "silicon revision = %d\n", scp->srev);
1485 * Shut off interrupts.
1487 xe_disable_intr(scp);
1493 scp->phy_ok = xe_mii_init(scp);
1503 * Take interface offline. This is done by powering down the device, which I
1504 * assume means just shutting down the transceiver and Ethernet logic. This
1505 * requires a _hard_ reset to recover from, as we need to power up again.
1508 xe_stop(struct xe_softc *scp) {
1512 device_printf(scp->dev, "stop\n");
1518 * Shut off interrupts.
1520 xe_disable_intr(scp);
1526 XE_OUTB(XE_GPR1, 0);
1530 * ~IFF_RUNNING == interface down.
1532 scp->ifp->if_flags &= ~IFF_RUNNING;
1533 scp->ifp->if_flags &= ~IFF_OACTIVE;
1534 scp->ifp->if_timer = 0;
1541 * Enable Ethernet interrupts from the card.
1544 xe_enable_intr(struct xe_softc *scp) {
1546 device_printf(scp->dev, "enable_intr\n");
1550 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */
1551 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */
1555 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1556 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1557 if (!(XE_INB(0x10) & 0x01)) {
1558 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1565 * Disable all Ethernet interrupts from the card.
1568 xe_disable_intr(struct xe_softc *scp) {
1570 device_printf(scp->dev, "disable_intr\n");
1574 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1575 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */
1576 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1580 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */
1581 XE_OUTB(XE_IMR1, 0);
1587 * Set up multicast filter and promiscuous mode
1590 xe_setmulti(struct xe_softc *scp) {
1592 struct ifmultiaddr *maddr;
1595 ifp = &scp->arpcom.ac_if;
1596 maddr = ifp->if_multiaddrs.lh_first;
1598 /* Get length of multicast list */
1599 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++);
1601 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) {
1603 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are
1604 * set, or if we have been asked to deal with more than 9 multicast
1605 * addresses. To do this: set MPE and PME in SWC1
1607 XE_SELECT_PAGE(0x42);
1608 XE_OUTB(XE_SWC1, 0x06);
1610 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) {
1612 * Program the filters for up to 9 addresses
1614 XE_SELECT_PAGE(0x42);
1615 XE_OUTB(XE_SWC1, 0x01);
1616 XE_SELECT_PAGE(0x40);
1617 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE);
1618 /*xe_reg_dump(scp);*/
1620 /*xe_reg_dump(scp);*/
1621 XE_SELECT_PAGE(0x40);
1622 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
1626 * No multicast operation (default)
1628 XE_SELECT_PAGE(0x42);
1629 XE_OUTB(XE_SWC1, 0);
1636 * Set up all on-chip addresses (for multicast). AFAICS, there are 10
1637 * of these things; the first is our MAC address, the other 9 are mcast
1638 * addresses, padded with the MAC address if there aren't enough.
1639 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be
1640 * XXX - doing much the same as the Linux code, which is weird enough that
1641 * XXX - it's probably right (despite my earlier comments to the contrary).
1644 xe_setaddrs(struct xe_softc *scp) {
1645 struct ifmultiaddr *maddr;
1647 u_int8_t page, slot, byte, i;
1649 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first;
1651 XE_SELECT_PAGE(page = 0x50);
1653 for (slot = 0, byte = 8; slot < 10; slot++) {
1656 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1658 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK)
1659 maddr = maddr->ifma_link.le_next;
1661 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr);
1663 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1666 for (i = 0; i < 6; i++, byte++) {
1669 printf(":%x", addr[i]);
1671 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]);
1677 XE_SELECT_PAGE(page);
1681 XE_OUTB(byte, addr[5 - i]);
1683 XE_OUTB(byte, addr[i]);
1695 * Write an outgoing packet to the card using programmed I/O.
1698 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1700 u_int16_t len, pad, free, ok;
1702 u_int8_t savebyte[2], wantbyte;
1704 /* Get total packet length */
1705 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1707 /* Packets < minimum length may need to be padded out */
1709 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
1710 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1;
1711 len = ETHER_MIN_LEN - ETHER_CRC_LEN;
1714 /* Check transmit buffer space */
1716 XE_OUTW(XE_TRS, len+2);
1717 free = XE_INW(XE_TSO);
1720 if (free <= len + 2)
1723 /* Send packet length to card */
1724 XE_OUTW(XE_EDP, len);
1727 * Write packet to card using PIO (code stolen from the ed driver)
1730 while (mbp != NULL) {
1733 data = mtod(mbp, caddr_t);
1734 if (wantbyte) { /* Finish the last word */
1735 savebyte[1] = *data;
1736 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1741 if (len > 1) { /* Output contiguous words */
1742 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1747 if (len == 1) { /* Save last byte, if necessary */
1748 savebyte[0] = *data;
1754 if (wantbyte) /* Last byte for odd-length packets */
1755 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1758 * For CE3 cards, just tell 'em to send -- apparently the card will pad out
1759 * short packets with random cruft. Otherwise, write nonsense words to fill
1760 * out the packet. I guess it is then sent automatically (?)
1763 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR);
1766 XE_OUTW(XE_EDP, 0xdead);
1774 * Compute the 32-bit Ethernet CRC for the given buffer.
1777 xe_compute_crc(u_int8_t *data, int len) {
1778 u_int32_t crc = 0xffffffff;
1779 u_int32_t poly = 0x04c11db6;
1780 u_int8_t current, crc31, bit;
1783 for (i = 0; i < len; i++) {
1785 for (k = 1; k <= 8; k++) {
1786 if (crc & 0x80000000) {
1792 bit = crc31 ^ (current & 0x01);
1796 crc = (crc ^ poly)|1;
1805 * Convert a CRC into an index into the multicast hash table. What we do is
1806 * take the most-significant 6 bits of the CRC, reverse them, and use that as
1807 * the bit number in the hash table. Bits 5:3 of the result give the byte
1808 * within the table (0-7); bits 2:0 give the bit number within that byte (also
1809 * 0-7), ie. the number of shifts needed to get it into the lsb position.
1812 xe_compute_hashbit(u_int32_t crc) {
1813 u_int8_t hashbit = 0;
1816 for (i = 0; i < 6; i++) {
1818 if (crc & 0x80000000) {
1823 return (hashbit >> 2);
1828 /**************************************************************
1830 * M I I F U N C T I O N S *
1832 **************************************************************/
1835 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1836 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1837 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1838 * XXX - some kind of common MII-handling code, shared by all drivers. But
1839 * XXX - that's a whole other mission.
1841 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1842 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1846 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1849 xe_mii_sync(struct xe_softc *scp) {
1853 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1855 for (i = 0; i < 32; i++) {
1856 XE_MII_SET(XE_MII_CLK);
1858 XE_MII_CLR(XE_MII_CLK);
1865 * Look for a MII-compliant PHY. If we find one, reset it.
1868 xe_mii_init(struct xe_softc *scp) {
1871 status = xe_phy_readreg(scp, PHY_BMSR);
1872 if ((status & 0xff00) != 0x7800) {
1874 device_printf(scp->dev, "no PHY found, %0x\n", status);
1880 device_printf(scp->dev, "PHY OK!\n");
1884 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1886 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1894 * Clock a series of bits through the MII.
1897 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1901 XE_MII_CLR(XE_MII_CLK);
1903 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1905 XE_MII_SET(XE_MII_WRD);
1907 XE_MII_CLR(XE_MII_WRD);
1910 XE_MII_CLR(XE_MII_CLK);
1912 XE_MII_SET(XE_MII_CLK);
1918 * Read an PHY register through the MII.
1921 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1927 * Set up frame for RX.
1929 frame->mii_stdelim = XE_MII_STARTDELIM;
1930 frame->mii_opcode = XE_MII_READOP;
1931 frame->mii_turnaround = 0;
1932 frame->mii_data = 0;
1935 XE_OUTB(XE_GPR2, 0);
1938 * Turn on data xmit.
1940 XE_MII_SET(XE_MII_DIR);
1945 * Send command/address info.
1947 xe_mii_send(scp, frame->mii_stdelim, 2);
1948 xe_mii_send(scp, frame->mii_opcode, 2);
1949 xe_mii_send(scp, frame->mii_phyaddr, 5);
1950 xe_mii_send(scp, frame->mii_regaddr, 5);
1953 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1955 XE_MII_SET(XE_MII_CLK);
1958 /* Turn off xmit. */
1959 XE_MII_CLR(XE_MII_DIR);
1962 XE_MII_CLR(XE_MII_CLK);
1964 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1965 XE_MII_SET(XE_MII_CLK);
1969 * Now try reading data bits. If the ack failed, we still
1970 * need to clock through 16 cycles to keep the PHY(s) in sync.
1973 for(i = 0; i < 16; i++) {
1974 XE_MII_CLR(XE_MII_CLK);
1976 XE_MII_SET(XE_MII_CLK);
1982 for (i = 0x8000; i; i >>= 1) {
1983 XE_MII_CLR(XE_MII_CLK);
1986 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1987 frame->mii_data |= i;
1990 XE_MII_SET(XE_MII_CLK);
1996 XE_MII_CLR(XE_MII_CLK);
1998 XE_MII_SET(XE_MII_CLK);
2010 * Write to a PHY register through the MII.
2013 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
2019 * Set up frame for TX.
2021 frame->mii_stdelim = XE_MII_STARTDELIM;
2022 frame->mii_opcode = XE_MII_WRITEOP;
2023 frame->mii_turnaround = XE_MII_TURNAROUND;
2028 * Turn on data output.
2030 XE_MII_SET(XE_MII_DIR);
2034 xe_mii_send(scp, frame->mii_stdelim, 2);
2035 xe_mii_send(scp, frame->mii_opcode, 2);
2036 xe_mii_send(scp, frame->mii_phyaddr, 5);
2037 xe_mii_send(scp, frame->mii_regaddr, 5);
2038 xe_mii_send(scp, frame->mii_turnaround, 2);
2039 xe_mii_send(scp, frame->mii_data, 16);
2042 XE_MII_SET(XE_MII_CLK);
2044 XE_MII_CLR(XE_MII_CLK);
2050 XE_MII_CLR(XE_MII_DIR);
2059 * Read a register from the PHY.
2062 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
2063 struct xe_mii_frame frame;
2065 bzero((char *)&frame, sizeof(frame));
2067 frame.mii_phyaddr = 0;
2068 frame.mii_regaddr = reg;
2069 xe_mii_readreg(scp, &frame);
2071 return(frame.mii_data);
2076 * Write to a PHY register.
2079 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
2080 struct xe_mii_frame frame;
2082 bzero((char *)&frame, sizeof(frame));
2084 frame.mii_phyaddr = 0;
2085 frame.mii_regaddr = reg;
2086 frame.mii_data = data;
2087 xe_mii_writereg(scp, &frame);
2095 * A bit of debugging code.
2098 xe_mii_dump(struct xe_softc *scp) {
2103 device_printf(scp->dev, "MII registers: ");
2104 for (i = 0; i < 2; i++) {
2105 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
2107 for (i = 4; i < 7; i++) {
2108 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
2116 xe_reg_dump(struct xe_softc *scp) {
2121 device_printf(scp->dev, "Common registers: ");
2122 for (i = 0; i < 8; i++) {
2123 printf(" %2.2x", XE_INB(i));
2127 for (page = 0; page <= 8; page++) {
2128 device_printf(scp->dev, "Register page %2.2x: ", page);
2129 XE_SELECT_PAGE(page);
2130 for (i = 8; i < 16; i++) {
2131 printf(" %2.2x", XE_INB(i));
2136 for (page = 0x10; page < 0x5f; page++) {
2137 if ((page >= 0x11 && page <= 0x3f) ||
2139 (page >= 0x43 && page <= 0x4f) ||
2142 device_printf(scp->dev, "Register page %2.2x: ", page);
2143 XE_SELECT_PAGE(page);
2144 for (i = 8; i < 16; i++) {
2145 printf(" %2.2x", XE_INB(i));
2155 xe_activate(device_t dev)
2157 struct xe_softc *sc = device_get_softc(dev);
2161 sc->port_rid = 0; /* 0 is managed by pccard */
2162 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
2163 &sc->port_rid, 0, ~0, 16, RF_ACTIVE);
2166 * Find a 16 byte aligned ioport for the card.
2169 device_printf(dev, "Finding an aligned port for RealPort\n");
2170 #endif /* XE_DEBUG */
2171 sc->port_rid = 1; /* 0 is managed by pccard */
2174 sc->port_res = bus_alloc_resource(dev,
2175 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
2177 if (sc->port_res == 0)
2178 break; /* we failed */
2179 if ((rman_get_start(sc->port_res) & 0xf) == 0)
2181 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2183 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
2186 device_printf(dev, "port 0x%0lx, size 0x%0lx\n",
2187 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
2188 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid));
2189 #endif /* XE_DEBUG */
2191 if (!sc->port_res) {
2193 device_printf(dev, "Cannot allocate ioport\n");
2199 sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid,
2200 0, ~0, 1, RF_ACTIVE);
2203 device_printf(dev, "Cannot allocate irq\n");
2208 if ((err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc,
2209 &sc->intrhand)) != 0) {
2214 sc->bst = rman_get_bustag(sc->port_res);
2215 sc->bsh = rman_get_bushandle(sc->port_res);
2220 xe_deactivate(device_t dev)
2222 struct xe_softc *sc = device_get_softc(dev);
2225 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
2228 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2232 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
2238 static device_method_t xe_pccard_methods[] = {
2239 /* Device interface */
2240 DEVMETHOD(device_probe, xe_probe),
2241 DEVMETHOD(device_attach, xe_attach),
2242 DEVMETHOD(device_detach, xe_detach),
2247 static driver_t xe_pccard_driver = {
2250 sizeof(struct xe_softc),
2253 devclass_t xe_devclass;
2255 DRIVER_MODULE(xe, pccard, xe_pccard_driver, xe_devclass, 0, 0);