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 1.19 2005/05/27 15:36:10 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>
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/ifq_var.h>
133 #include <net/if_arp.h>
134 #include <net/if_dl.h>
135 #include <net/if_media.h>
136 #include <net/if_mib.h>
139 #include <bus/pccard/pccardvar.h>
142 #include "if_xereg.h"
143 #include "if_xevar.h"
145 #include <machine/clock.h>
148 * MII command structure
150 struct xe_mii_frame {
151 u_int8_t mii_stdelim;
153 u_int8_t mii_phyaddr;
154 u_int8_t mii_regaddr;
155 u_int8_t mii_turnaround;
160 * Media autonegotiation progress constants
162 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
163 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
164 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
165 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
166 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
170 * Prototypes start here
172 static int xe_probe (device_t dev);
173 static int xe_attach (device_t dev);
174 static int xe_detach (device_t dev);
175 static int xe_activate (device_t dev);
176 static void xe_deactivate (device_t dev);
177 static void xe_init (void *xscp);
178 static void xe_start (struct ifnet *ifp);
179 static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *);
180 static void xe_watchdog (struct ifnet *ifp);
181 static int xe_media_change (struct ifnet *ifp);
182 static void xe_media_status (struct ifnet *ifp, struct ifmediareq *mrp);
183 static timeout_t xe_setmedia;
184 static void xe_hard_reset (struct xe_softc *scp);
185 static void xe_soft_reset (struct xe_softc *scp);
186 static void xe_stop (struct xe_softc *scp);
187 static void xe_enable_intr (struct xe_softc *scp);
188 static void xe_disable_intr (struct xe_softc *scp);
189 static void xe_setmulti (struct xe_softc *scp);
190 static void xe_setaddrs (struct xe_softc *scp);
191 static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
193 static u_int32_t xe_compute_crc (u_int8_t *data, int len);
194 static int xe_compute_hashbit (u_int32_t crc);
200 static void xe_mii_sync (struct xe_softc *scp);
201 static int xe_mii_init (struct xe_softc *scp);
202 static void xe_mii_send (struct xe_softc *scp, u_int32_t bits, int cnt);
203 static int xe_mii_readreg (struct xe_softc *scp, struct xe_mii_frame *frame);
204 static int xe_mii_writereg (struct xe_softc *scp, struct xe_mii_frame *frame);
205 static u_int16_t xe_phy_readreg (struct xe_softc *scp, u_int16_t reg);
206 static void xe_phy_writereg (struct xe_softc *scp, u_int16_t reg, u_int16_t data);
209 * Debug functions -- uncomment for VERY verbose dignostic information.
210 * Set to 1 for less verbose information
212 /* #define XE_DEBUG 2 */
214 #define XE_REG_DUMP(scp) xe_reg_dump((scp))
215 #define XE_MII_DUMP(scp) xe_mii_dump((scp))
216 static void xe_reg_dump (struct xe_softc *scp);
217 static void xe_mii_dump (struct xe_softc *scp);
219 #define XE_REG_DUMP(scp)
220 #define XE_MII_DUMP(scp)
224 * Fixing for RealPort cards - they need a little furtling to get the
228 xe_cem56fix(device_t dev)
230 struct xe_softc *sc = (struct xe_softc *) device_get_softc(dev);
232 bus_space_handle_t bsh;
238 device_printf(dev, "Hacking your Realport, master\n");
242 device_printf(dev, "Realport port 0x%0lx, size 0x%0lx\n",
243 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
244 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid));
248 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE);
251 device_printf(dev, "Can't map in attribute memory\n");
256 bsh = rman_get_bushandle(r);
257 bst = rman_get_bustag(r);
259 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
262 bus_space_write_1(bst, bsh, DINGO_ECOR, DINGO_ECOR_IRQ_LEVEL |
263 DINGO_ECOR_INT_ENABLE |
264 DINGO_ECOR_IOB_ENABLE |
265 DINGO_ECOR_ETH_ENABLE);
266 ioport = bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid);
267 bus_space_write_1(bst, bsh, DINGO_EBAR0, ioport & 0xff);
268 bus_space_write_1(bst, bsh, DINGO_EBAR1, (ioport >> 8) & 0xff);
270 bus_space_write_1(bst, bsh, DINGO_DCOR0, DINGO_DCOR0_SF_INT);
271 bus_space_write_1(bst, bsh, DINGO_DCOR1, DINGO_DCOR1_INT_LEVEL |
273 bus_space_write_1(bst, bsh, DINGO_DCOR2, 0x00);
274 bus_space_write_1(bst, bsh, DINGO_DCOR3, 0x00);
275 bus_space_write_1(bst, bsh, DINGO_DCOR4, 0x00);
277 bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
284 * PCMCIA probe routine.
285 * Probe and identify the device. Called by the slot manager when the card is
286 * inserted or the machine wakes up from suspend mode. Assmes that the slot
287 * structure has been initialised already.
290 xe_probe(device_t dev)
292 struct xe_softc *scp = (struct xe_softc *) device_get_softc(dev);
294 bus_space_handle_t bsh;
296 u_char ver_str[CISTPL_BUFSIZE>>1];
305 device_printf(dev, "xe: Probing\n");
310 r = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 4 << 10, RF_ACTIVE);
313 device_printf(dev, "Can't map in cis\n");
317 bsh = rman_get_bushandle(r);
318 bst = rman_get_bustag(r);
321 CARD_SET_RES_FLAGS(device_get_parent(dev), dev, SYS_RES_MEMORY, rid,
324 /* Grep through CIS looking for relevant tuples */
329 u_int8_t rev, media, prod;
331 switch (CISTPL_TYPE(buf)) {
333 case 0x15: /* Grab version string (needed to ID some weird CE2's) */
335 device_printf(dev, "Got version string (0x15)\n");
337 for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++));
339 ver_str[(CISTPL_BUFSIZE>>1) - 1] = CISTPL_LEN(buf);
343 case 0x20: /* Figure out what type of card we have */
345 device_printf(dev, "Got card ID (0x20)\n");
347 vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8);
348 rev = CISTPL_DATA(buf, 2);
349 media = CISTPL_DATA(buf, 3);
350 prod = CISTPL_DATA(buf, 4);
352 switch (vendor) { /* Get vendor ID */
354 scp->vendor = "Xircom"; break;
357 scp->vendor = "Compaq"; break;
359 scp->vendor = "Intel"; break;
361 scp->vendor = "Unknown";
364 if (!((prod & 0x40) && (media & 0x01))) {
366 device_printf(dev, "Not a PCMCIA Ethernet card!\n");
368 rc = ENODEV; /* Not a PCMCIA Ethernet device */
370 if (media & 0x10) { /* Ethernet/modem cards */
372 device_printf(dev, "Card is Ethernet/modem combo\n");
375 switch (prod & 0x0f) {
377 scp->card_type = "CEM"; break;
380 scp->card_type = "CEM2"; break;
383 scp->card_type = "CEM3"; break;
386 scp->card_type = "CEM33"; break;
389 scp->card_type = "CEM56M"; break;
391 case 7: /* Some kind of RealPort card */
394 scp->card_type = "CEM56"; break;
398 } else { /* Ethernet-only cards */
400 device_printf(dev, "Card is Ethernet only\n");
402 switch (prod & 0x0f) {
404 scp->card_type = "CE"; break;
407 scp->card_type = "CE2"; break;
410 scp->card_type = "CE3"; break;
419 case 0x22: /* Get MAC address */
420 if ((CISTPL_LEN(buf) == 8) &&
421 (CISTPL_DATA(buf, 0) == 0x04) &&
422 (CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) {
424 device_printf(dev, "Got MAC address (0x22)\n");
426 for (i = 0; i < ETHER_ADDR_LEN; i++)
427 scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2);
435 if (CISTPL_TYPE(buf) == 0xff)
437 /* Skip to next tuple */
438 buf += ((CISTPL_LEN(buf) + 2) << 1);
443 bus_release_resource(dev, SYS_RES_MEMORY, rid, r);
448 /* Die now if something went wrong above */
452 /* Check for certain strange CE2's that look like CE's */
453 if (strcmp(scp->card_type, "CE") == 0) {
454 u_char *str = ver_str;
456 device_printf(dev, "Checking for weird CE2 string\n");
458 str += strlen(str) + 1; /* Skip forward to 3rd version string */
459 str += strlen(str) + 1;
460 str += strlen(str) + 1;
461 for (i = 0; i < strlen(str) - 2; i++) {
462 if (bcmp(&str[i], "CE2", 3) ==0) { /* Look for "CE2" string */
463 scp->card_type = "CE2";
468 /* Reject unsupported cards */
469 if (strcmp(scp->card_type, "CE") == 0 || strcmp(scp->card_type, "CEM") == 0) {
470 device_printf(dev, "Sorry, your %s card is not supported :(\n",
480 * The device entry is being removed, probably because someone ejected the
481 * card. The interface should have been brought down manually before calling
482 * this function; if not you may well lose packets. In any case, I shut down
483 * the card and the interface, and hope for the best.
486 xe_detach(device_t dev) {
487 struct xe_softc *sc = device_get_softc(dev);
489 sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING;
490 callout_stop(&sc->xe_timer);
491 ether_ifdetach(&sc->arpcom.ac_if);
500 xe_attach (device_t dev) {
501 struct xe_softc *scp = device_get_softc(dev);
505 device_printf(dev, "attach\n");
508 if ((err = xe_activate(dev)) != 0)
511 /* Fill in some private data */
512 scp->ifp = &scp->arpcom.ac_if;
513 scp->ifm = &scp->ifmedia;
514 scp->autoneg_status = 0;
516 /* Hack RealPorts into submission */
517 if (scp->dingo && xe_cem56fix(dev) < 0) {
518 device_printf(dev, "Unable to fix your RealPort\n");
523 /* Hopefully safe to read this here */
525 scp->version = XE_INB(XE_BOV);
528 /* Initialise the ifnet structure */
529 scp->ifp->if_softc = scp;
530 if_initname(scp->ifp, "xe", device_get_unit(dev));
531 scp->ifp->if_timer = 0;
532 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
533 scp->ifp->if_linkmib = &scp->mibdata;
534 scp->ifp->if_linkmiblen = sizeof scp->mibdata;
535 scp->ifp->if_start = xe_start;
536 scp->ifp->if_ioctl = xe_ioctl;
537 scp->ifp->if_watchdog = xe_watchdog;
538 scp->ifp->if_init = xe_init;
539 ifq_set_maxlen(&scp->ifp->if_snd, IFQ_MAXLEN);
540 ifq_set_ready(&scp->ifp->if_snd);
542 /* Initialise the ifmedia structure */
543 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
544 callout_init(&scp->xe_timer);
547 * Fill in supported media types. Some cards _do_ support full duplex
548 * operation, but this driver doesn't, yet. Therefore we leave those modes
549 * out of the list. We support some form of autoselection in all cases.
552 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
553 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
556 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
557 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
559 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
561 /* Default is to autoselect best supported media type */
562 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
564 /* Print some useful information */
565 device_printf(dev, "%s %s, bonding version %#x%s%s\n",
569 scp->mohawk ? ", 100Mbps capable" : "",
570 scp->modem ? ", with modem" : "");
572 XE_SELECT_PAGE(0x10);
573 device_printf(dev, "DingoID = %#x, RevisionID = %#x, VendorID = %#x\n",
576 XE_INW(XE_VendorID));
579 XE_SELECT_PAGE(0x45);
580 device_printf(dev, "CE2 version = %#x\n", XE_INB(XE_REV));
583 /* Attach the interface */
584 ether_ifattach(scp->ifp, scp->arpcom.ac_enaddr);
592 * Initialize device. Completes the reset procedure on the card and starts
593 * output. If there's an autonegotiation in progress we DON'T do anything;
594 * the media selection code will call us again when it's done.
597 xe_init(void *xscp) {
598 struct xe_softc *scp = xscp;
602 device_printf(scp->dev, "init\n");
605 if (TAILQ_EMPTY(&scp->ifp->if_addrhead)) return;
607 /* Reset transmitter flags */
610 scp->tx_collisions = 0;
611 scp->ifp->if_timer = 0;
615 XE_SELECT_PAGE(0x42);
616 XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */
619 * Set the 'local memory dividing line' -- splits the 32K card memory into
620 * 8K for transmit buffers and 24K for receive. This is done automatically
621 * on newer revision cards.
623 if (scp->srev != 1) {
625 XE_OUTW(XE_RBS, 0x2000);
628 /* Set up multicast addresses */
631 /* Fix the data offset register -- reset leaves it off-by-one */
633 XE_OUTW(XE_DO, 0x2000);
636 * Set MAC interrupt masks and clear status regs. The bit names are direct
637 * from the Linux code; I have no idea what most of them do.
639 XE_SELECT_PAGE(0x40); /* Bit 7..0 */
640 XE_OUTB(XE_RX0Msk, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
641 XE_OUTB(XE_TX0Msk, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
642 XE_OUTB(XE_TX0Msk+1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */
643 XE_OUTB(XE_RST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
644 XE_OUTB(XE_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
645 XE_OUTB(XE_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
648 * Check for an in-progress autonegotiation. If one is active, just set
649 * IFF_RUNNING and return. The media selection code will call us again when
652 if (scp->autoneg_status) {
653 scp->ifp->if_flags |= IFF_RUNNING;
656 /* Enable receiver, put MAC online */
657 XE_SELECT_PAGE(0x40);
658 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
660 /* Set up IMR, enable interrupts */
663 /* Attempt to start output */
664 scp->ifp->if_flags |= IFF_RUNNING;
665 scp->ifp->if_flags &= ~IFF_OACTIVE;
674 * Start output on interface. We make two assumptions here:
675 * 1) that the current priority is set to splimp _before_ this code
676 * is called *and* is returned to the appropriate priority after
678 * 2) that the IFF_OACTIVE flag is checked before this code is called
679 * (i.e. that the output part of the interface is idle)
682 xe_start(struct ifnet *ifp) {
683 struct xe_softc *scp = ifp->if_softc;
687 * Loop while there are packets to be sent, and space to send them.
690 mbp = ifq_poll(&ifp->if_snd); /* Suck a packet off the send queue */
694 * We are using the !OACTIVE flag to indicate to the outside world that
695 * we can accept an additional packet rather than that the transmitter
696 * is _actually_ active. Indeed, the transmitter may be active, but if
697 * we haven't filled all the buffers with data then we still want to
700 ifp->if_flags &= ~IFF_OACTIVE;
704 if (xe_pio_write_packet(scp, mbp) != 0) {
705 ifp->if_flags |= IFF_OACTIVE;
709 mbp = ifq_dequeue(&ifp->if_snd);
712 ifp->if_timer = 5; /* In case we don't hear from the card again */
721 * Process an ioctl request. Adapted from the ed driver.
724 xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) {
725 struct xe_softc *scp;
737 * If the interface is marked up and stopped, then start it. If it is
738 * marked down and running, then stop it.
740 if (ifp->if_flags & IFF_UP) {
741 if (!(ifp->if_flags & IFF_RUNNING)) {
748 if (ifp->if_flags & IFF_RUNNING)
755 * Multicast list has (maybe) changed; set the hardware filter
756 * accordingly. This also serves to deal with promiscuous mode if we have
757 * a BPF listener active.
766 * Someone wants to get/set media options.
768 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia, command);
772 error = ether_ioctl(ifp, command, data);
783 * Card interrupt handler.
785 * This function is probably more complicated than it needs to be, as it
786 * attempts to deal with the case where multiple packets get sent between
787 * interrupts. This is especially annoying when working out the collision
788 * stats. Not sure whether this case ever really happens or not (maybe on a
789 * slow/heavily loaded machine?) so it's probably best to leave this like it
792 * Note that the crappy PIO used to get packets on and off the card means that
793 * you will spend a lot of time in this routine -- I can get my P150 to spend
794 * 90% of its time servicing interrupts if I really hammer the network. Could
795 * fix this, but then you'd start dropping/losing packets. The moral of this
796 * story? If you want good network performance _and_ some cycles left over to
797 * get your work done, don't buy a Xircom card. Or convince them to tell me
798 * how to do memory-mapped I/O :)
803 struct xe_softc *scp = (struct xe_softc *) xscp;
806 u_int16_t rx_bytes, rxs, txs;
807 u_int8_t psr, isr, esr, rsr;
809 ifp = &scp->arpcom.ac_if;
810 rx_bytes = 0; /* Bytes received on this interrupt */
811 result = 0; /* Set true if the interrupt is for us */
814 XE_OUTB(XE_CR, 0); /* Disable interrupts */
817 psr = XE_INB(XE_PR); /* Stash the current register page */
820 * Read ISR to see what caused this interrupt. Note that this clears the
821 * ISR on CE2 type cards.
823 if ((isr = XE_INB(XE_ISR)) && isr != 0xff) {
825 result = 1; /* This device did generate an int */
826 esr = XE_INB(XE_ESR); /* Read the other status registers */
827 XE_SELECT_PAGE(0x40);
828 rxs = XE_INB(XE_RST0);
829 XE_OUTB(XE_RST0, ~rxs & 0xff);
830 txs = XE_INB(XE_TXST0);
831 txs |= XE_INB(XE_TXST1) << 8;
832 XE_OUTB(XE_TXST0, 0);
833 XE_OUTB(XE_TXST1, 0);
837 printf("xe%d: ISR=%#2.2x ESR=%#2.2x RST=%#2.2x TXST=%#4.4x\n", unit, isr, esr, rxs, txs);
841 * Handle transmit interrupts
843 if (isr & XE_ISR_TX_PACKET) {
844 u_int8_t new_tpr, sent;
846 if ((new_tpr = XE_INB(XE_TPR)) < scp->tx_tpr) /* Update packet count */
847 sent = (0xff - scp->tx_tpr) + new_tpr; /* TPR rolled over */
849 sent = new_tpr - scp->tx_tpr;
851 if (sent > 0) { /* Packets sent since last interrupt */
852 scp->tx_tpr = new_tpr;
853 scp->tx_queued -= sent;
854 ifp->if_opackets += sent;
855 ifp->if_collisions += scp->tx_collisions;
858 * Collision stats are a PITA. If multiples frames have been sent, we
859 * distribute any outstanding collision count equally amongst them.
860 * However, if we're missing interrupts we're quite likely to also
861 * miss some collisions; thus the total count will be off anyway.
862 * Likewise, if we miss a frame dropped due to excessive collisions
863 * any outstanding collisions count will be held against the next
864 * frame to be successfully sent. Hopefully it averages out in the
866 * XXX - This will screw up if tx_collisions/sent > 14. FIX IT!
868 switch (scp->tx_collisions) {
872 scp->mibdata.dot3StatsSingleCollisionFrames++;
873 scp->mibdata.dot3StatsCollFrequencies[0]++;
877 scp->mibdata.dot3StatsMultipleCollisionFrames++;
878 scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++;
880 else { /* Distribute across multiple frames */
881 scp->mibdata.dot3StatsMultipleCollisionFrames += sent;
883 dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent;
885 dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent;
888 scp->tx_collisions = 0;
891 ifp->if_flags &= ~IFF_OACTIVE;
893 if (txs & 0x0002) { /* Excessive collisions (packet dropped) */
894 ifp->if_collisions += 16;
896 scp->tx_collisions = 0;
897 scp->mibdata.dot3StatsExcessiveCollisions++;
898 scp->mibdata.dot3StatsMultipleCollisionFrames++;
899 scp->mibdata.dot3StatsCollFrequencies[15]++;
900 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
902 if (txs & 0x0040) /* Transmit aborted -- probably collisions */
903 scp->tx_collisions++;
907 * Handle receive interrupts
909 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
911 if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) {
912 struct ether_header *ehp;
916 len = XE_INW(XE_RBC);
923 * Limit the amount of time we spend in this loop, dropping packets if
924 * necessary. The Linux code does this with considerably more
925 * finesse, adjusting the threshold dynamically.
927 if ((rx_bytes += len) > 22000) {
929 scp->mibData.dot3StatsMissedFrames++;
930 XE_OUTW(XE_DO, 0x8000);
938 MGETHDR(mbp, MB_DONTWAIT, MT_DATA); /* Allocate a header mbuf */
940 mbp->m_pkthdr.rcvif = ifp;
941 mbp->m_pkthdr.len = mbp->m_len = len;
944 * If the mbuf header isn't big enough for the packet, attach an
945 * mbuf cluster to hold it. The +2 is to allow for the nasty little
946 * alignment hack below.
948 if (len + 2 > MHLEN) {
949 MCLGET(mbp, MB_DONTWAIT);
950 if ((mbp->m_flags & M_EXT) == 0) {
959 * The Ethernet header is 14 bytes long; thus the actual packet data
960 * won't be 32-bit aligned when it's dumped into the mbuf. We
961 * offset everything by 2 bytes to fix this. Apparently the
962 * alignment is important for NFS, damn its eyes.
965 ehp = mtod(mbp, struct ether_header *);
968 * Now get the packet, including the Ethernet header and trailer (?)
969 * We use programmed I/O, because we don't know how to do shared
970 * memory with these cards. So yes, it's real slow, and heavy on
971 * the interrupts (CPU on my P150 maxed out at ~950KBps incoming).
973 if (scp->srev == 0) { /* Workaround a bug in old cards */
977 rhs = XE_INW(XE_RHSA);
980 rhs += 3; /* Skip control info */
985 if (rhs + len > 0x8000) {
989 * XXX - This i-- seems very wrong, but it's what the Linux guys
990 * XXX - do. Need someone with an old CE2 to test this for me.
991 * XXX - 99/3/28: Changed the first i-- to an i++, maybe that'll
992 * XXX - fix it? It seems as though the previous version would
993 * XXX - have caused an infinite loop (what, another one?).
995 for (i = 0; i < len; i++, rhs++) {
996 ((char *)ehp)[i] = XE_INB(XE_EDP);
1004 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
1005 (u_int16_t *) ehp, len >> 1);
1008 bus_space_read_multi_2(scp->bst, scp->bsh, XE_EDP,
1009 (u_int16_t *) ehp, len >> 1);
1011 /* Deliver packet to upper layers */
1013 mbp->m_pkthdr.len = mbp->m_len = len;
1014 (*ifp->if_input)(ifp, mbp); /* Send the packet on its way */
1015 ifp->if_ipackets++; /* Success! */
1017 XE_OUTW(XE_DO, 0x8000); /* skip_rx_packet command */
1020 else if (rsr & XE_RSR_LONG_PACKET) { /* Packet length >1518 bytes */
1021 scp->mibdata.dot3StatsFrameTooLongs++;
1024 else if (rsr & XE_RSR_CRC_ERROR) { /* Bad checksum on packet */
1025 scp->mibdata.dot3StatsFCSErrors++;
1028 else if (rsr & XE_RSR_ALIGN_ERROR) { /* Packet alignment error */
1029 scp->mibdata.dot3StatsAlignmentErrors++;
1033 if (rxs & 0x10) { /* Receiver overrun */
1034 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
1036 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
1040 XE_SELECT_PAGE(psr); /* Restore saved page */
1041 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */
1043 /* Could force an int here, instead of dropping packets? */
1044 /* XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */
1051 * Device timeout/watchdog routine. Called automatically if we queue a packet
1052 * for transmission but don't get an interrupt within a specified timeout
1053 * (usually 5 seconds). When this happens we assume the worst and reset the
1057 xe_watchdog(struct ifnet *ifp) {
1058 struct xe_softc *scp = ifp->if_softc;
1060 device_printf(scp->dev, "watchdog timeout; resetting card\n");
1062 ifp->if_oerrors += scp->tx_queued;
1071 * Change media selection.
1074 xe_media_change(struct ifnet *ifp) {
1075 struct xe_softc *scp = ifp->if_softc;
1078 printf("%s: media_change\n", ifp->if_xname);
1081 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER)
1085 * Some card/media combos aren't always possible -- filter those out here.
1087 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
1088 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok)
1098 * Return current media selection.
1101 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp) {
1104 printf("%s: media_status\n", ifp->if_xname);
1107 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
1114 * Select active media.
1116 static void xe_setmedia(void *xscp) {
1117 struct xe_softc *scp = xscp;
1118 u_int16_t bmcr, bmsr, anar, lpar;
1121 device_printf(scp->dev, "setmedia\n");
1124 /* Cancel any pending timeout */
1125 callout_stop(&scp->xe_timer);
1126 xe_disable_intr(scp);
1129 scp->media = IFM_ETHER;
1130 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
1132 case IFM_AUTO: /* Autoselect media */
1133 scp->media = IFM_ETHER|IFM_AUTO;
1136 * Autoselection is really awful. It goes something like this:
1138 * Wait until the transmitter goes idle (2sec timeout).
1140 * IF a 100Mbit PHY exists
1141 * Start NWAY autonegotiation (3.5sec timeout)
1143 * Select 100baseTX or 10baseT, whichever was detected
1146 * IF a 100Mbit PHY exists
1147 * Try to force a 100baseTX link (3sec timeout)
1156 * IF nothing selected so far
1157 * IF a 100Mbit PHY exists
1160 * Select 10baseT or 10base2, whichever is connected
1164 switch (scp->autoneg_status) {
1166 case XE_AUTONEG_NONE:
1168 device_printf(scp->dev, "Waiting for idle transmitter\n");
1170 scp->arpcom.ac_if.if_flags |= IFF_OACTIVE;
1171 scp->autoneg_status = XE_AUTONEG_WAITING;
1172 callout_reset(&scp->xe_timer, hz * 2, xe_setmedia, scp);
1175 case XE_AUTONEG_WAITING:
1179 device_printf(scp->dev, "Starting autonegotiation\n");
1181 bmcr = xe_phy_readreg(scp, PHY_BMCR);
1182 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
1183 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1184 anar = xe_phy_readreg(scp, PHY_ANAR);
1185 anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_10BTFULL);
1186 anar |= PHY_ANAR_100BTXHALF|PHY_ANAR_10BTHALF;
1187 xe_phy_writereg(scp, PHY_ANAR, anar);
1188 bmcr |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
1189 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1190 scp->autoneg_status = XE_AUTONEG_STARTED;
1191 callout_reset(&scp->xe_timer, hz * 7 / 2, xe_setmedia, scp);
1195 scp->autoneg_status = XE_AUTONEG_FAIL;
1199 case XE_AUTONEG_STARTED:
1200 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1201 lpar = xe_phy_readreg(scp, PHY_LPAR);
1202 if (bmsr & (PHY_BMSR_AUTONEGCOMP|PHY_BMSR_LINKSTAT)) {
1204 device_printf(scp->dev, "Autonegotiation complete!\n");
1207 * XXX - Shouldn't have to do this, but (on my hub at least) the
1208 * XXX - transmitter won't work after a successful autoneg. So we see
1209 * XXX - what the negotiation result was and force that mode. I'm
1210 * XXX - sure there is an easy fix for this.
1212 if (lpar & PHY_LPAR_100BTXHALF) {
1213 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1216 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1217 scp->media = IFM_ETHER|IFM_100_TX;
1218 scp->autoneg_status = XE_AUTONEG_NONE;
1222 * XXX - Bit of a hack going on in here.
1223 * XXX - This is derived from Ken Hughes patch to the Linux driver
1224 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
1225 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
1226 * XXX - these are the things we need to find out.
1228 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1231 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1232 XE_SELECT_PAGE(0x42);
1233 XE_OUTB(XE_SWC1, 0x80);
1234 scp->media = IFM_ETHER|IFM_10_T;
1235 scp->autoneg_status = XE_AUTONEG_NONE;
1237 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
1238 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
1243 device_printf(scp->dev, "Autonegotiation failed; trying 100baseTX\n");
1248 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1249 scp->autoneg_status = XE_AUTONEG_100TX;
1250 callout_reset(&scp->xe_timer, hz * 3, xe_setmedia, scp);
1254 scp->autoneg_status = XE_AUTONEG_FAIL;
1259 case XE_AUTONEG_100TX:
1260 (void)xe_phy_readreg(scp, PHY_BMSR);
1261 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1262 if (bmsr & PHY_BMSR_LINKSTAT) {
1264 device_printf(scp->dev, "Got 100baseTX link!\n");
1268 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1269 scp->media = IFM_ETHER|IFM_100_TX;
1270 scp->autoneg_status = XE_AUTONEG_NONE;
1274 device_printf(scp->dev, "Autonegotiation failed; disabling PHY\n");
1277 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1279 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY? */
1280 scp->autoneg_status = XE_AUTONEG_FAIL;
1286 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1287 * either autonegotiation failed, or never got started to begin with. In
1288 * either case, select a suitable 10Mbit media and hope it works. We
1289 * don't need to reset the card again, since it will have been done
1290 * already by the big switch above.
1292 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1294 device_printf(scp->dev, "Selecting 10baseX\n");
1297 XE_SELECT_PAGE(0x42);
1298 XE_OUTB(XE_SWC1, 0x80);
1299 scp->media = IFM_ETHER|IFM_10_T;
1300 scp->autoneg_status = XE_AUTONEG_NONE;
1304 XE_OUTB(XE_GPR0, 4);
1306 XE_SELECT_PAGE(0x42);
1307 XE_OUTB(XE_SWC1, (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 0x80 : 0xc0);
1308 scp->media = IFM_ETHER|((XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1309 scp->autoneg_status = XE_AUTONEG_NONE;
1316 * If a specific media has been requested, we just reset the card and
1317 * select it (one small exception -- if 100baseTX is requested by there is
1318 * no PHY, we fall back to 10baseT operation).
1320 case IFM_100_TX: /* Force 100baseTX */
1324 device_printf(scp->dev, "Selecting 100baseTX\n");
1326 XE_SELECT_PAGE(0x42);
1327 XE_OUTB(XE_SWC1, 0);
1328 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1330 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1331 scp->media |= IFM_100_TX;
1336 case IFM_10_T: /* Force 10baseT */
1339 device_printf(scp->dev, "Selecting 10baseT\n");
1342 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1344 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08); /* Disable PHY */
1346 XE_SELECT_PAGE(0x42);
1347 XE_OUTB(XE_SWC1, 0x80);
1348 scp->media |= IFM_10_T;
1354 device_printf(scp->dev, "Selecting 10base2\n");
1356 XE_SELECT_PAGE(0x42);
1357 XE_OUTB(XE_SWC1, 0xc0);
1358 scp->media |= IFM_10_2;
1364 * Finally, the LEDs are set to match whatever media was chosen and the
1365 * transmitter is unblocked.
1368 device_printf(scp->dev, "Setting LEDs\n");
1371 switch (IFM_SUBTYPE(scp->media)) {
1374 XE_OUTB(XE_LED, 0x3b);
1376 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1380 XE_OUTB(XE_LED, 0x3a);
1384 /* Restart output? */
1385 scp->ifp->if_flags &= ~IFF_OACTIVE;
1391 * Hard reset (power cycle) the card.
1394 xe_hard_reset(struct xe_softc *scp) {
1398 device_printf(scp->dev, "hard_reset\n");
1404 * Power cycle the card.
1407 XE_OUTB(XE_GPR1, 0); /* Power off */
1411 XE_OUTB(XE_GPR1, 1); /* And back on again */
1413 XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */
1422 * Soft reset the card. Also makes sure that the ML6692 and 10Mbit controller
1423 * are powered up, sets the silicon revision number in softc, disables
1424 * interrupts and checks for the prescence of a 100Mbit PHY. This should
1425 * leave us in a position where we can access the PHY and do media
1426 * selection. The function imposes a 0.5s delay while the hardware powers up.
1429 xe_soft_reset(struct xe_softc *scp) {
1433 device_printf(scp->dev, "soft_reset\n");
1439 * Reset the card, (again).
1442 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
1449 * set GP1 and GP2 as outputs (bits 2 & 3)
1450 * set GP1 low to power on the ML6692 (bit 0)
1451 * set GP2 high to power on the 10Mhz chip (bit 1)
1454 XE_OUTB(XE_GPR0, 0x0e);
1458 * Wait for everything to wake up.
1463 * Get silicon revision number.
1467 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
1469 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
1471 device_printf(scp->dev, "silicon revision = %d\n", scp->srev);
1475 * Shut off interrupts.
1477 xe_disable_intr(scp);
1483 scp->phy_ok = xe_mii_init(scp);
1493 * Take interface offline. This is done by powering down the device, which I
1494 * assume means just shutting down the transceiver and Ethernet logic. This
1495 * requires a _hard_ reset to recover from, as we need to power up again.
1498 xe_stop(struct xe_softc *scp) {
1502 device_printf(scp->dev, "stop\n");
1508 * Shut off interrupts.
1510 xe_disable_intr(scp);
1516 XE_OUTB(XE_GPR1, 0);
1520 * ~IFF_RUNNING == interface down.
1522 scp->ifp->if_flags &= ~IFF_RUNNING;
1523 scp->ifp->if_flags &= ~IFF_OACTIVE;
1524 scp->ifp->if_timer = 0;
1531 * Enable Ethernet interrupts from the card.
1534 xe_enable_intr(struct xe_softc *scp) {
1536 device_printf(scp->dev, "enable_intr\n");
1540 XE_OUTB(XE_IMR0, 0xff); /* Unmask everything */
1541 XE_OUTB(XE_IMR1, 0x01); /* Unmask TX underrun detection */
1545 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1546 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1547 if (!(XE_INB(0x10) & 0x01)) {
1548 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1555 * Disable all Ethernet interrupts from the card.
1558 xe_disable_intr(struct xe_softc *scp) {
1560 device_printf(scp->dev, "disable_intr\n");
1564 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1565 if (scp->modem && !scp->dingo) { /* More magic (does this work?) */
1566 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1570 XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */
1571 XE_OUTB(XE_IMR1, 0);
1577 * Set up multicast filter and promiscuous mode
1580 xe_setmulti(struct xe_softc *scp) {
1582 struct ifmultiaddr *maddr;
1585 ifp = &scp->arpcom.ac_if;
1586 maddr = ifp->if_multiaddrs.lh_first;
1588 /* Get length of multicast list */
1589 for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++);
1591 if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) {
1593 * Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are
1594 * set, or if we have been asked to deal with more than 9 multicast
1595 * addresses. To do this: set MPE and PME in SWC1
1597 XE_SELECT_PAGE(0x42);
1598 XE_OUTB(XE_SWC1, 0x06);
1600 else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) {
1602 * Program the filters for up to 9 addresses
1604 XE_SELECT_PAGE(0x42);
1605 XE_OUTB(XE_SWC1, 0x01);
1606 XE_SELECT_PAGE(0x40);
1607 XE_OUTB(XE_CMD0, XE_CMD0_OFFLINE);
1608 /*xe_reg_dump(scp);*/
1610 /*xe_reg_dump(scp);*/
1611 XE_SELECT_PAGE(0x40);
1612 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
1616 * No multicast operation (default)
1618 XE_SELECT_PAGE(0x42);
1619 XE_OUTB(XE_SWC1, 0);
1626 * Set up all on-chip addresses (for multicast). AFAICS, there are 10
1627 * of these things; the first is our MAC address, the other 9 are mcast
1628 * addresses, padded with the MAC address if there aren't enough.
1629 * XXX - This doesn't work right, but I'm not sure why yet. We seem to be
1630 * XXX - doing much the same as the Linux code, which is weird enough that
1631 * XXX - it's probably right (despite my earlier comments to the contrary).
1634 xe_setaddrs(struct xe_softc *scp) {
1635 struct ifmultiaddr *maddr;
1637 u_int8_t page, slot, byte, i;
1639 maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first;
1641 XE_SELECT_PAGE(page = 0x50);
1643 for (slot = 0, byte = 8; slot < 10; slot++) {
1646 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1648 while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK)
1649 maddr = maddr->ifma_link.le_next;
1651 addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr);
1653 addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
1656 for (i = 0; i < 6; i++, byte++) {
1659 printf(":%x", addr[i]);
1661 device_printf(scp->dev, "individual addresses %d: %x", slot, addr[0]);
1667 XE_SELECT_PAGE(page);
1671 XE_OUTB(byte, addr[5 - i]);
1673 XE_OUTB(byte, addr[i]);
1685 * Write an outgoing packet to the card using programmed I/O.
1688 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
1690 u_int16_t len, pad, free, ok;
1692 u_int8_t savebyte[2], wantbyte;
1694 /* Get total packet length */
1695 for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
1697 /* Packets < minimum length may need to be padded out */
1699 if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
1700 pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1;
1701 len = ETHER_MIN_LEN - ETHER_CRC_LEN;
1704 /* Check transmit buffer space */
1706 XE_OUTW(XE_TRS, len+2);
1707 free = XE_INW(XE_TSO);
1710 if (free <= len + 2)
1713 /* Send packet length to card */
1714 XE_OUTW(XE_EDP, len);
1717 * Write packet to card using PIO (code stolen from the ed driver)
1720 while (mbp != NULL) {
1723 data = mtod(mbp, caddr_t);
1724 if (wantbyte) { /* Finish the last word */
1725 savebyte[1] = *data;
1726 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1731 if (len > 1) { /* Output contiguous words */
1732 bus_space_write_multi_2(scp->bst, scp->bsh, XE_EDP, (u_int16_t *) data,
1737 if (len == 1) { /* Save last byte, if necessary */
1738 savebyte[0] = *data;
1744 if (wantbyte) /* Last byte for odd-length packets */
1745 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1748 * For CE3 cards, just tell 'em to send -- apparently the card will pad out
1749 * short packets with random cruft. Otherwise, write nonsense words to fill
1750 * out the packet. I guess it is then sent automatically (?)
1753 XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR);
1756 XE_OUTW(XE_EDP, 0xdead);
1765 * Compute the 32-bit Ethernet CRC for the given buffer.
1768 xe_compute_crc(u_int8_t *data, int len) {
1769 u_int32_t crc = 0xffffffff;
1770 u_int32_t poly = 0x04c11db6;
1771 u_int8_t current, crc31, bit;
1774 for (i = 0; i < len; i++) {
1776 for (k = 1; k <= 8; k++) {
1777 if (crc & 0x80000000) {
1783 bit = crc31 ^ (current & 0x01);
1787 crc = (crc ^ poly)|1;
1796 * Convert a CRC into an index into the multicast hash table. What we do is
1797 * take the most-significant 6 bits of the CRC, reverse them, and use that as
1798 * the bit number in the hash table. Bits 5:3 of the result give the byte
1799 * within the table (0-7); bits 2:0 give the bit number within that byte (also
1800 * 0-7), ie. the number of shifts needed to get it into the lsb position.
1803 xe_compute_hashbit(u_int32_t crc) {
1804 u_int8_t hashbit = 0;
1807 for (i = 0; i < 6; i++) {
1809 if (crc & 0x80000000) {
1814 return (hashbit >> 2);
1821 /**************************************************************
1823 * M I I F U N C T I O N S *
1825 **************************************************************/
1828 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1829 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1830 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1831 * XXX - some kind of common MII-handling code, shared by all drivers. But
1832 * XXX - that's a whole other mission.
1834 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1835 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1839 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1842 xe_mii_sync(struct xe_softc *scp) {
1846 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1848 for (i = 0; i < 32; i++) {
1849 XE_MII_SET(XE_MII_CLK);
1851 XE_MII_CLR(XE_MII_CLK);
1858 * Look for a MII-compliant PHY. If we find one, reset it.
1861 xe_mii_init(struct xe_softc *scp) {
1864 status = xe_phy_readreg(scp, PHY_BMSR);
1865 if ((status & 0xff00) != 0x7800) {
1867 device_printf(scp->dev, "no PHY found, %0x\n", status);
1873 device_printf(scp->dev, "PHY OK!\n");
1877 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1879 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
1887 * Clock a series of bits through the MII.
1890 xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
1894 XE_MII_CLR(XE_MII_CLK);
1896 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1898 XE_MII_SET(XE_MII_WRD);
1900 XE_MII_CLR(XE_MII_WRD);
1903 XE_MII_CLR(XE_MII_CLK);
1905 XE_MII_SET(XE_MII_CLK);
1911 * Read an PHY register through the MII.
1914 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
1920 * Set up frame for RX.
1922 frame->mii_stdelim = XE_MII_STARTDELIM;
1923 frame->mii_opcode = XE_MII_READOP;
1924 frame->mii_turnaround = 0;
1925 frame->mii_data = 0;
1928 XE_OUTB(XE_GPR2, 0);
1931 * Turn on data xmit.
1933 XE_MII_SET(XE_MII_DIR);
1938 * Send command/address info.
1940 xe_mii_send(scp, frame->mii_stdelim, 2);
1941 xe_mii_send(scp, frame->mii_opcode, 2);
1942 xe_mii_send(scp, frame->mii_phyaddr, 5);
1943 xe_mii_send(scp, frame->mii_regaddr, 5);
1946 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1948 XE_MII_SET(XE_MII_CLK);
1951 /* Turn off xmit. */
1952 XE_MII_CLR(XE_MII_DIR);
1955 XE_MII_CLR(XE_MII_CLK);
1957 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1958 XE_MII_SET(XE_MII_CLK);
1962 * Now try reading data bits. If the ack failed, we still
1963 * need to clock through 16 cycles to keep the PHY(s) in sync.
1966 for(i = 0; i < 16; i++) {
1967 XE_MII_CLR(XE_MII_CLK);
1969 XE_MII_SET(XE_MII_CLK);
1975 for (i = 0x8000; i; i >>= 1) {
1976 XE_MII_CLR(XE_MII_CLK);
1979 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1980 frame->mii_data |= i;
1983 XE_MII_SET(XE_MII_CLK);
1989 XE_MII_CLR(XE_MII_CLK);
1991 XE_MII_SET(XE_MII_CLK);
2003 * Write to a PHY register through the MII.
2006 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
2012 * Set up frame for TX.
2014 frame->mii_stdelim = XE_MII_STARTDELIM;
2015 frame->mii_opcode = XE_MII_WRITEOP;
2016 frame->mii_turnaround = XE_MII_TURNAROUND;
2021 * Turn on data output.
2023 XE_MII_SET(XE_MII_DIR);
2027 xe_mii_send(scp, frame->mii_stdelim, 2);
2028 xe_mii_send(scp, frame->mii_opcode, 2);
2029 xe_mii_send(scp, frame->mii_phyaddr, 5);
2030 xe_mii_send(scp, frame->mii_regaddr, 5);
2031 xe_mii_send(scp, frame->mii_turnaround, 2);
2032 xe_mii_send(scp, frame->mii_data, 16);
2035 XE_MII_SET(XE_MII_CLK);
2037 XE_MII_CLR(XE_MII_CLK);
2043 XE_MII_CLR(XE_MII_DIR);
2052 * Read a register from the PHY.
2055 xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
2056 struct xe_mii_frame frame;
2058 bzero((char *)&frame, sizeof(frame));
2060 frame.mii_phyaddr = 0;
2061 frame.mii_regaddr = reg;
2062 xe_mii_readreg(scp, &frame);
2064 return(frame.mii_data);
2069 * Write to a PHY register.
2072 xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
2073 struct xe_mii_frame frame;
2075 bzero((char *)&frame, sizeof(frame));
2077 frame.mii_phyaddr = 0;
2078 frame.mii_regaddr = reg;
2079 frame.mii_data = data;
2080 xe_mii_writereg(scp, &frame);
2088 * A bit of debugging code.
2091 xe_mii_dump(struct xe_softc *scp) {
2096 device_printf(scp->dev, "MII registers: ");
2097 for (i = 0; i < 2; i++) {
2098 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
2100 for (i = 4; i < 7; i++) {
2101 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
2109 xe_reg_dump(struct xe_softc *scp) {
2114 device_printf(scp->dev, "Common registers: ");
2115 for (i = 0; i < 8; i++) {
2116 printf(" %2.2x", XE_INB(i));
2120 for (page = 0; page <= 8; page++) {
2121 device_printf(scp->dev, "Register page %2.2x: ", page);
2122 XE_SELECT_PAGE(page);
2123 for (i = 8; i < 16; i++) {
2124 printf(" %2.2x", XE_INB(i));
2129 for (page = 0x10; page < 0x5f; page++) {
2130 if ((page >= 0x11 && page <= 0x3f) ||
2132 (page >= 0x43 && page <= 0x4f) ||
2135 device_printf(scp->dev, "Register page %2.2x: ", page);
2136 XE_SELECT_PAGE(page);
2137 for (i = 8; i < 16; i++) {
2138 printf(" %2.2x", XE_INB(i));
2148 xe_activate(device_t dev)
2150 struct xe_softc *sc = device_get_softc(dev);
2154 sc->port_rid = 0; /* 0 is managed by pccard */
2155 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
2156 &sc->port_rid, 0, ~0, 16, RF_ACTIVE);
2159 * Find a 16 byte aligned ioport for the card.
2162 device_printf(dev, "Finding an aligned port for RealPort\n");
2163 #endif /* XE_DEBUG */
2164 sc->port_rid = 1; /* 0 is managed by pccard */
2167 sc->port_res = bus_alloc_resource(dev,
2168 SYS_RES_IOPORT, &sc->port_rid, start, 0x3ff, 16,
2170 if (sc->port_res == 0)
2171 break; /* we failed */
2172 if ((rman_get_start(sc->port_res) & 0xf) == 0)
2174 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2176 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
2179 device_printf(dev, "port 0x%0lx, size 0x%0lx\n",
2180 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
2181 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid));
2182 #endif /* XE_DEBUG */
2184 if (!sc->port_res) {
2186 device_printf(dev, "Cannot allocate ioport\n");
2192 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
2196 device_printf(dev, "Cannot allocate irq\n");
2201 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET, xe_intr, sc,
2202 &sc->intrhand, NULL);
2208 sc->bst = rman_get_bustag(sc->port_res);
2209 sc->bsh = rman_get_bushandle(sc->port_res);
2214 xe_deactivate(device_t dev)
2216 struct xe_softc *sc = device_get_softc(dev);
2219 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
2222 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2226 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
2232 static device_method_t xe_pccard_methods[] = {
2233 /* Device interface */
2234 DEVMETHOD(device_probe, xe_probe),
2235 DEVMETHOD(device_attach, xe_attach),
2236 DEVMETHOD(device_detach, xe_detach),
2241 static driver_t xe_pccard_driver = {
2244 sizeof(struct xe_softc),
2247 devclass_t xe_devclass;
2249 DECLARE_DUMMY_MODULE(if_xe);
2250 DRIVER_MODULE(if_xe, pccard, xe_pccard_driver, xe_devclass, 0, 0);