2 * Copyright (c) 1998, 1999, 2003 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 1.39 2003/10/14 22:51:35 rsm Exp $
28 * $DragonFly: src/sys/dev/netif/xe/if_xe.c,v 1.35 2008/05/14 11:59:23 sephe Exp $
32 * Portions of this software were derived from Werner Koch's xirc2ps driver
33 * for Linux under the terms of the following license (from v1.30 of the
36 * Copyright (c) 1997 by Werner Koch (dd9jn)
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, and the entire permission notice in its entirety,
43 * including the disclaimer of warranties.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. The name of the author may not be used to endorse or promote
48 * products derived from this software without specific prior
51 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
52 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
54 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
55 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
56 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
57 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
59 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
60 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
61 * OF THE POSSIBILITY OF SUCH DAMAGE.
65 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The
66 * following cards are currently known to work with the driver:
67 * Xircom CreditCard 10/100 (CE3)
68 * Xircom CreditCard Ethernet + Modem 28 (CEM28)
69 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56)
70 * Xircom RealPort Ethernet 10
71 * Xircom RealPort Ethernet 10/100
72 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G)
73 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A)
74 * Compaq Netelligent 10/100 PC Card (CPQ-10/100)
76 * Some other cards *should* work, but support for them is either broken or in
77 * an unknown state at the moment. I'm always interested in hearing from
78 * people who own any of these cards:
79 * Xircom CreditCard 10Base-T (PS-CE2-10)
80 * Xircom CreditCard Ethernet + ModemII (CEM2)
81 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?)
83 * Thanks to all who assisted with the development and testing of the driver,
84 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru
85 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left
86 * out anyone who deserves a mention here.
88 * Special thanks to Ade Lovett for both hosting the mailing list and doing
89 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting
92 * Author email: <scott@uk.freebsd.org>
93 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/
97 #include <sys/param.h>
98 #include <sys/cdefs.h>
99 #include <sys/errno.h>
100 #include <sys/kernel.h>
101 #include <sys/mbuf.h>
102 #include <sys/select.h>
103 #include <sys/socket.h>
104 #include <sys/sockio.h>
105 #include <sys/sysctl.h>
106 #include <sys/systm.h>
108 #include <sys/serialize.h>
109 #include <sys/module.h>
111 #include <sys/rman.h>
112 #include <sys/thread2.h>
113 #include <sys/interrupt.h>
115 #include <net/ethernet.h>
117 #include <net/ifq_var.h>
118 #include <net/if_arp.h>
119 #include <net/if_dl.h>
120 #include <net/if_media.h>
121 #include <net/if_mib.h>
124 #include "if_xereg.h"
125 #include "if_xevar.h"
128 * MII command structure
130 struct xe_mii_frame
{
131 u_int8_t mii_stdelim
;
133 u_int8_t mii_phyaddr
;
134 u_int8_t mii_regaddr
;
135 u_int8_t mii_turnaround
;
140 * Media autonegotiation progress constants
142 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
143 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
144 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
145 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
146 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
149 * Multicast hashing CRC constants
151 #define XE_CRC_POLY 0x04c11db6
154 * Prototypes start here
156 static void xe_init (void *xscp
);
157 static void xe_intr (void *xscp
);
158 static void xe_start (struct ifnet
*ifp
);
159 static int xe_ioctl (struct ifnet
*ifp
, u_long command
, caddr_t data
, struct ucred
*);
160 static void xe_watchdog (struct ifnet
*ifp
);
161 static int xe_media_change (struct ifnet
*ifp
);
162 static void xe_media_status (struct ifnet
*ifp
, struct ifmediareq
*mrp
);
163 static timeout_t xe_setmedia
;
164 static timeout_t xe_setmedia_serialized
;
165 static void xe_reset (struct xe_softc
*scp
);
166 static void xe_stop (struct xe_softc
*scp
);
167 static void xe_enable_intr (struct xe_softc
*scp
);
168 static void xe_disable_intr (struct xe_softc
*scp
);
169 static void xe_set_multicast (struct xe_softc
*scp
);
170 static void xe_set_addr (struct xe_softc
*scp
, u_int8_t
* addr
, unsigned idx
);
171 static void xe_set_hash (struct xe_softc
*scp
, u_int8_t
* addr
);
172 static int xe_pio_write_packet (struct xe_softc
*scp
, struct mbuf
*mbp
);
177 static void xe_mii_sync (struct xe_softc
*scp
);
178 static int xe_mii_init (struct xe_softc
*scp
);
179 static void xe_mii_send (struct xe_softc
*scp
, u_int32_t bits
, int cnt
);
180 static int xe_mii_readreg (struct xe_softc
*scp
, struct xe_mii_frame
*frame
);
181 static int xe_mii_writereg (struct xe_softc
*scp
, struct xe_mii_frame
*frame
);
182 static u_int16_t
xe_phy_readreg (struct xe_softc
*scp
, u_int16_t reg
);
183 static void xe_phy_writereg (struct xe_softc
*scp
, u_int16_t reg
, u_int16_t data
);
185 /* Debugging functions */
186 static void xe_reg_dump (struct xe_softc
*scp
) __unused
;
187 static void xe_mii_dump (struct xe_softc
*scp
);
194 SYSCTL_NODE(_hw
, OID_AUTO
, xe
, CTLFLAG_RD
, 0, "xe parameters");
197 * Debug logging levels - set with hw.xe.debug sysctl
199 * 1 = More hardware details, probe/attach progress
200 * 2 = Most function calls, ioctls and media selection progress
201 * 3 = Everything - interrupts, packets in/out and multicast address setup
204 SYSCTL_INT(_hw_xe
, OID_AUTO
, debug
, CTLFLAG_RW
, &xe_debug
, 0, "xe debug level");
206 #define DPRINTF(level, arg) if (xe_debug >= (level)) kprintf arg
207 #define IFPRINTF(level, arg) if (xe_debug >= (level)) if_printf arg
208 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg
209 #define XE_MII_DUMP(scp) if (xe_debug >= 3) xe_mii_dump(scp)
210 #define XE_REG_DUMP(scp) if (xe_debug >= 3) xe_reg_dump(scp)
212 #else /* !XE_DEBUG */
214 #define DPRINTF(level, arg)
215 #define IFPRINTF(level, arg)
216 #define DEVPRINTF(level, arg)
217 #define XE_REG_DUMP(scp)
218 #define XE_MII_DUMP(scp)
220 #endif /* XE_DEBUG */
223 * The device entry is being removed, probably because someone ejected the
224 * card. The interface should have been brought down manually before calling
225 * this function; if not you may well lose packets. In any case, I shut down
226 * the card and the interface, and hope for the best.
229 xe_detach(device_t dev
)
231 struct xe_softc
*sc
= device_get_softc(dev
);
232 struct ifnet
*ifp
= &sc
->arpcom
.ac_if
;
234 lwkt_serialize_enter(ifp
->if_serializer
);
236 ifp
->if_flags
&= ~IFF_RUNNING
;
237 callout_stop(&sc
->xe_timer
);
238 bus_teardown_intr(dev
, sc
->irq_res
, sc
->intrhand
);
240 lwkt_serialize_exit(ifp
->if_serializer
);
252 xe_attach (device_t dev
)
254 struct xe_softc
*scp
= device_get_softc(dev
);
257 DEVPRINTF(2, (dev
, "attach\n"));
259 /* Fill in some private data */
260 scp
->ifp
= &scp
->arpcom
.ac_if
;
261 scp
->ifm
= &scp
->ifmedia
;
262 scp
->autoneg_status
= XE_AUTONEG_NONE
;
264 /* Initialise the ifnet structure */
265 scp
->ifp
->if_softc
= scp
;
266 if_initname(scp
->ifp
, device_get_name(dev
), device_get_unit(dev
));
267 scp
->ifp
->if_timer
= 0;
268 scp
->ifp
->if_flags
= (IFF_BROADCAST
| IFF_SIMPLEX
| IFF_MULTICAST
);
269 scp
->ifp
->if_linkmib
= &scp
->mibdata
;
270 scp
->ifp
->if_linkmiblen
= sizeof scp
->mibdata
;
271 scp
->ifp
->if_start
= xe_start
;
272 scp
->ifp
->if_ioctl
= xe_ioctl
;
273 scp
->ifp
->if_watchdog
= xe_watchdog
;
274 scp
->ifp
->if_init
= xe_init
;
275 scp
->ifp
->if_baudrate
= 100000000;
276 ifq_set_maxlen(&scp
->ifp
->if_snd
, IFQ_MAXLEN
);
277 ifq_set_ready(&scp
->ifp
->if_snd
);
279 /* Initialise the ifmedia structure */
280 ifmedia_init(scp
->ifm
, 0, xe_media_change
, xe_media_status
);
281 callout_init(&scp
->xe_timer
);
283 /* Add supported media types */
285 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_100_TX
, 0, NULL
);
286 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_10_T
|IFM_FDX
, 0, NULL
);
287 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_10_T
|IFM_HDX
, 0, NULL
);
289 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_10_T
, 0, NULL
);
291 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_10_2
, 0, NULL
);
292 ifmedia_add(scp
->ifm
, IFM_ETHER
|IFM_AUTO
, 0, NULL
);
294 /* Default is to autoselect best supported media type */
295 ifmedia_set(scp
->ifm
, IFM_ETHER
|IFM_AUTO
);
297 /* Get the hardware into a known state */
300 /* Get hardware version numbers */
302 scp
->version
= XE_INB(XE_BOV
);
304 scp
->srev
= (XE_INB(XE_BOV
) & 0x70) >> 4;
306 scp
->srev
= (XE_INB(XE_BOV
) & 0x30) >> 4;
308 /* Print some useful information */
309 device_printf(dev
, "%s %s, version 0x%02x/0x%02x%s%s\n",
314 scp
->mohawk
? ", 100Mbps capable" : "",
315 scp
->modem
? ", with modem" : "");
318 XE_SELECT_PAGE(0x10);
319 DEVPRINTF(1, (dev
, "DingoID=0x%04x, RevisionID=0x%04x, VendorID=0x%04x\n",
322 XE_INW(XE_VendorID
)));
325 XE_SELECT_PAGE(0x45);
326 DEVPRINTF(1, (dev
, "CE2 version = 0x%#02x\n", XE_INB(XE_REV
)));
329 /* Attach the interface */
330 ether_ifattach(scp
->ifp
, scp
->arpcom
.ac_enaddr
, NULL
);
332 err
= bus_setup_intr(dev
, scp
->irq_res
, INTR_NETSAFE
,
333 xe_intr
, scp
, &scp
->intrhand
,
334 scp
->ifp
->if_serializer
);
336 device_printf(dev
, "Setup intr failed\n");
337 ether_ifdetach(scp
->ifp
);
342 scp
->ifp
->if_cpuid
= ithread_cpuid(rman_get_start(scp
->irq_res
));
343 KKASSERT(scp
->ifp
->if_cpuid
>= 0 && scp
->ifp
->if_cpuid
< ncpus
);
351 * Complete hardware intitialisation and enable output. Exits without doing
352 * anything if there's no address assigned to the card, or if media selection
353 * is in progress (the latter implies we've already run this function).
356 xe_init(void *xscp
) {
357 struct xe_softc
*scp
= xscp
;
360 if (scp
->autoneg_status
!= XE_AUTONEG_NONE
) return;
362 IFPRINTF(2, (scp
->ifp
, "init\n"));
366 /* Reset transmitter flags */
369 scp
->tx_timeouts
= 0;
371 scp
->tx_min
= ETHER_MIN_LEN
- ETHER_CRC_LEN
;
372 scp
->ifp
->if_timer
= 0;
374 /* Soft reset the card */
376 XE_OUTB(XE_CR
, XE_CR_SOFT_RESET
);
383 * set GP1 and GP2 as outputs (bits 2 & 3)
384 * set GP1 low to power on the ML6692 (bit 0)
385 * set GP2 high to power on the 10Mhz chip (bit 1)
388 XE_OUTB(XE_GPR0
, XE_GPR0_GP2_SELECT
|XE_GPR0_GP1_SELECT
|XE_GPR0_GP2_OUT
);
391 /* Shut off interrupts */
392 xe_disable_intr(scp
);
394 /* Wait for everything to wake up */
399 scp
->phy_ok
= xe_mii_init(scp
);
401 /* Disable 'source insertion' (not sure what that means) */
402 XE_SELECT_PAGE(0x42);
403 XE_OUTB(XE_SWC0
, XE_SWC0_NO_SRC_INSERT
);
405 /* Set 8K/24K Tx/Rx buffer split */
406 if (scp
->srev
!= 1) {
408 XE_OUTW(XE_RBS
, 0x2000);
411 /* Enable early transmit mode on Mohawk/Dingo */
413 XE_SELECT_PAGE(0x03);
414 XE_OUTW(XE_TPT
, scp
->tx_thres
);
415 XE_SELECT_PAGE(0x01);
416 XE_OUTB(XE_ECR
, XE_INB(XE_ECR
) | XE_ECR_EARLY_TX
);
419 /* Put MAC address in first 'individual address' register */
420 XE_SELECT_PAGE(0x50);
421 for (i
= 0; i
< 6; i
++)
422 XE_OUTB(0x08 + i
, scp
->arpcom
.ac_enaddr
[scp
->mohawk
? 5 - i
: i
]);
424 /* Set up multicast addresses */
425 xe_set_multicast(scp
);
427 /* Fix the receive data offset -- reset can leave it off-by-one */
429 XE_OUTW(XE_DO
, 0x2000);
431 /* Set interrupt masks */
433 XE_OUTB(XE_IMR0
, XE_IMR0_TX_PACKET
| XE_IMR0_MAC_INTR
| XE_IMR0_RX_PACKET
);
435 /* Set MAC interrupt masks */
436 XE_SELECT_PAGE(0x40);
438 ~(XE_RX0M_RX_OVERRUN
| XE_RX0M_CRC_ERROR
439 | XE_RX0M_ALIGN_ERROR
| XE_RX0M_LONG_PACKET
));
441 ~(XE_TX0M_SQE_FAIL
| XE_TX0M_LATE_COLLISION
| XE_TX0M_TX_UNDERRUN
442 | XE_TX0M_16_COLLISIONS
| XE_TX0M_NO_CARRIER
));
444 /* Clear MAC status registers */
445 XE_SELECT_PAGE(0x40);
446 XE_OUTB(XE_RST0
, 0x00);
447 XE_OUTB(XE_TXST0
, 0x00);
449 /* Enable receiver and put MAC online */
450 XE_SELECT_PAGE(0x40);
451 XE_OUTB(XE_CMD0
, XE_CMD0_RX_ENABLE
|XE_CMD0_ONLINE
);
453 /* Set up IMR, enable interrupts */
456 /* Start media selection */
457 xe_setmedia_serialized(scp
);
460 scp
->ifp
->if_flags
|= IFF_RUNNING
;
461 scp
->ifp
->if_flags
&= ~IFF_OACTIVE
;
468 * Start output on interface. Should be called at splimp() priority. Check
469 * that the output is idle (ie, IFF_OACTIVE is not set) before calling this
470 * function. If media selection is in progress we set IFF_OACTIVE ourselves
471 * and return immediately.
474 xe_start(struct ifnet
*ifp
) {
475 struct xe_softc
*scp
= ifp
->if_softc
;
478 if (scp
->autoneg_status
!= XE_AUTONEG_NONE
) {
479 ifp
->if_flags
|= IFF_OACTIVE
;
483 IFPRINTF(3, (ifp
, "start\n"));
486 * Loop while there are packets to be sent, and space to send them.
489 /* Suck a packet off the send queue */
490 mbp
= ifq_dequeue(&ifp
->if_snd
, NULL
);
493 * We are using the !OACTIVE flag to indicate to the outside
494 * world that we can accept an additional packet rather than
495 * that the transmitter is _actually_ active. Indeed, the
496 * transmitter may be active, but if we haven't filled all
497 * the buffers with data then we still want to accept more.
499 ifp
->if_flags
&= ~IFF_OACTIVE
;
503 if (xe_pio_write_packet(scp
, mbp
) != 0) {
504 ifp
->if_flags
|= IFF_OACTIVE
;
505 ifq_prepend(&ifp
->if_snd
, mbp
);
511 ifp
->if_timer
= 5; /* In case we don't hear from the card again */
520 * Process an ioctl request. Adapted from the ed driver.
523 xe_ioctl (struct ifnet
*ifp
, u_long command
, caddr_t data
, struct ucred
*cr
) {
524 struct xe_softc
*scp
;
535 IFPRINTF(2, (ifp
, "ioctl: SIOCSIFFLAGS: 0x%04x\n", ifp
->if_flags
));
537 * If the interface is marked up and stopped, then start it. If it is
538 * marked down and running, then stop it.
540 if (ifp
->if_flags
& IFF_UP
) {
541 if (!(ifp
->if_flags
& IFF_RUNNING
)) {
547 if (ifp
->if_flags
& IFF_RUNNING
)
550 /* FALL THROUGH (handle changes to PROMISC/ALLMULTI flags) */
554 IFPRINTF(2, (ifp
, "ioctl: SIOC{ADD,DEL}MULTI\n"));
556 * Multicast list has (maybe) changed; set the hardware filters
559 xe_set_multicast(scp
);
565 IFPRINTF(3, (ifp
, "ioctl: bounce to ifmedia_ioctl\n"));
567 * Someone wants to get/set media options.
569 error
= ifmedia_ioctl(ifp
, (struct ifreq
*)data
, &scp
->ifmedia
, command
);
573 IFPRINTF(3, (ifp
, "ioctl: bounce to ether_ioctl\n"));
574 error
= ether_ioctl(ifp
, command
, data
);
585 * Card interrupt handler.
587 * This function is probably more complicated than it needs to be, as it
588 * attempts to deal with the case where multiple packets get sent between
589 * interrupts. This is especially annoying when working out the collision
590 * stats. Not sure whether this case ever really happens or not (maybe on a
591 * slow/heavily loaded machine?) so it's probably best to leave this like it
594 * Note that the crappy PIO used to get packets on and off the card means that
595 * you will spend a lot of time in this routine -- I can get my P150 to spend
596 * 90% of its time servicing interrupts if I really hammer the network. Could
597 * fix this, but then you'd start dropping/losing packets. The moral of this
598 * story? If you want good network performance _and_ some cycles left over to
599 * get your work done, don't buy a Xircom card. Or convince them to tell me
600 * how to do memory-mapped I/O :)
605 struct xe_softc
*scp
= (struct xe_softc
*) xscp
;
607 u_int8_t psr
, isr
, esr
, rsr
, rst0
, txst0
, txst1
, coll
;
609 ifp
= &scp
->arpcom
.ac_if
;
611 /* Disable interrupts */
615 /* Cache current register page */
618 /* Read ISR to see what caused this interrupt */
619 while ((isr
= XE_INB(XE_ISR
)) != 0) {
620 /* 0xff might mean the card is no longer around */
622 IFPRINTF(3, (ifp
, "intr: interrupt received for missing card?\n"));
626 /* Read other status registers */
627 XE_SELECT_PAGE(0x40);
628 rst0
= XE_INB(XE_RST0
);
630 txst0
= XE_INB(XE_TXST0
);
631 txst1
= XE_INB(XE_TXST1
);
632 coll
= txst1
& XE_TXST1_RETRY_COUNT
;
633 XE_OUTB(XE_TXST0
, 0);
634 XE_OUTB(XE_TXST1
, 0);
638 "intr: ISR=0x%02x, RST=0x%02x, TXT=0x%02x%02x, COLL=0x%01x\n",
639 isr
, rst0
, txst1
, txst0
, coll
));
641 /* Handle transmitted packet(s) */
642 if (isr
& XE_ISR_TX_PACKET
) {
645 /* Update packet count, accounting for rollover */
646 tpr
= XE_INB(XE_TPR
);
647 sent
= -scp
->tx_tpr
+ tpr
;
649 /* Update statistics if we actually sent anything */
652 scp
->tx_queued
-= sent
;
653 ifp
->if_opackets
+= sent
;
654 ifp
->if_collisions
+= coll
;
657 * According to the Xircom manual, Dingo will sometimes manage to
658 * transmit a packet with triggering an interrupt. If this happens,
659 * we have sent > 1 and the collision count only reflects collisions
660 * on the last packet sent (the one that triggered the interrupt).
661 * Collision stats might therefore be a bit low, but there doesn't
662 * seem to be anything we can do about that.
668 scp
->mibdata
.dot3StatsSingleCollisionFrames
++;
669 scp
->mibdata
.dot3StatsCollFrequencies
[0]++;
672 scp
->mibdata
.dot3StatsMultipleCollisionFrames
++;
673 scp
->mibdata
.dot3StatsCollFrequencies
[coll
-1]++;
677 ifp
->if_flags
&= ~IFF_OACTIVE
;
680 /* Handle most MAC interrupts */
681 if (isr
& XE_ISR_MAC_INTR
) {
683 /* Carrier sense lost -- only in 10Mbit HDX mode */
684 if (txst0
& XE_TXST0_NO_CARRIER
|| !(txst1
& XE_TXST1_LINK_STATUS
)) {
685 /* XXX - Need to update media status here */
686 device_printf(scp
->dev
, "no carrier\n");
688 scp
->mibdata
.dot3StatsCarrierSenseErrors
++;
691 /* Excessive collisions -- try sending again */
692 if (txst0
& XE_TXST0_16_COLLISIONS
) {
693 ifp
->if_collisions
+= 16;
695 scp
->mibdata
.dot3StatsExcessiveCollisions
++;
696 scp
->mibdata
.dot3StatsMultipleCollisionFrames
++;
697 scp
->mibdata
.dot3StatsCollFrequencies
[15]++;
698 XE_OUTB(XE_CR
, XE_CR_RESTART_TX
);
700 /* Transmit underrun -- increase early transmit threshold */
701 if (txst0
& XE_TXST0_TX_UNDERRUN
&& scp
->mohawk
) {
702 IFPRINTF(1, (ifp
, "transmit underrun"));
703 if (scp
->tx_thres
< ETHER_MAX_LEN
) {
704 if ((scp
->tx_thres
+= 64) > ETHER_MAX_LEN
)
705 scp
->tx_thres
= ETHER_MAX_LEN
;
706 DPRINTF(1, (": increasing transmit threshold to %u", scp
->tx_thres
));
708 XE_OUTW(XE_TPT
, scp
->tx_thres
);
713 scp
->mibdata
.dot3StatsInternalMacTransmitErrors
++;
715 /* Late collision -- just complain about it */
716 if (txst0
& XE_TXST0_LATE_COLLISION
) {
717 if_printf(ifp
, "late collision\n");
719 scp
->mibdata
.dot3StatsLateCollisions
++;
721 /* SQE test failure -- just complain about it */
722 if (txst0
& XE_TXST0_SQE_FAIL
) {
723 if_printf(ifp
, "SQE test failure\n");
725 scp
->mibdata
.dot3StatsSQETestErrors
++;
727 /* Packet too long -- what happens to these */
728 if (rst0
& XE_RST0_LONG_PACKET
) {
729 if_printf(ifp
, "received giant packet\n");
731 scp
->mibdata
.dot3StatsFrameTooLongs
++;
733 /* CRC error -- packet dropped */
734 if (rst0
& XE_RST0_CRC_ERROR
) {
735 if_printf(ifp
, "CRC error\n");
737 scp
->mibdata
.dot3StatsFCSErrors
++;
741 /* Handle received packet(s) */
742 while ((esr
= XE_INB(XE_ESR
)) & XE_ESR_FULL_PACKET_RX
) {
743 rsr
= XE_INB(XE_RSR
);
744 IFPRINTF(3, (ifp
, "intr: ESR=0x%02x, RSR=0x%02x\n", esr
, rsr
));
746 /* Make sure packet is a good one */
747 if (rsr
& XE_RSR_RX_OK
) {
748 struct ether_header
*ehp
;
752 len
= XE_INW(XE_RBC
) - ETHER_CRC_LEN
;
754 IFPRINTF(3, (ifp
, "intr: receive length = %d\n", len
));
762 * Allocate mbuf to hold received packet. If the mbuf header isn't
763 * big enough, we attach an mbuf cluster to hold the packet. Note the
764 * +=2 to align the packet data on a 32-bit boundary, and the +3 to
765 * allow for the possibility of reading one more byte than the actual
766 * packet length (we always read 16-bit words).
767 * XXX - Surely there's a better way to do this alignment?
769 MGETHDR(mbp
, MB_DONTWAIT
, MT_DATA
);
775 if (len
+ 3 > MHLEN
) {
776 MCLGET(mbp
, MB_DONTWAIT
);
777 if ((mbp
->m_flags
& M_EXT
) == 0) {
785 ehp
= mtod(mbp
, struct ether_header
*);
788 * Now get the packet in PIO mode, including the Ethernet header but
789 * omitting the trailing CRC.
793 * Work around a bug in CE2 cards. There seems to be a problem with
794 * duplicated and extraneous bytes in the receive buffer, but without
795 * any real documentation for the CE2 it's hard to tell for sure.
796 * XXX - Needs testing on CE2 hardware
798 if (scp
->srev
== 0) {
802 rhs
= XE_INW(XE_RHSA
);
805 rhs
+= 3; /* Skip control info */
810 if (rhs
+ len
> 0x8000) {
813 for (i
= 0; i
< len
; i
++, rhs
++) {
814 ((char *)ehp
)[i
] = XE_INB(XE_EDP
);
822 bus_space_read_multi_2(scp
->bst
, scp
->bsh
, XE_EDP
,
823 (u_int16_t
*) ehp
, (len
+ 1) >> 1);
826 bus_space_read_multi_2(scp
->bst
, scp
->bsh
, XE_EDP
,
827 (u_int16_t
*) ehp
, (len
+ 1) >> 1);
829 /* Deliver packet to upper layers */
830 mbp
->m_pkthdr
.rcvif
= ifp
;
831 mbp
->m_pkthdr
.len
= mbp
->m_len
= len
;
832 ifp
->if_input(ifp
, mbp
);
835 else if (rsr
& XE_RSR_ALIGN_ERROR
) {
836 /* Packet alignment error -- drop packet */
837 if_printf(ifp
, "alignment error\n");
838 scp
->mibdata
.dot3StatsAlignmentErrors
++;
842 /* Skip to next packet, if there is one */
843 XE_OUTW(XE_DO
, 0x8000);
846 /* Clear receiver overruns now we have some free buffer space */
847 if (rst0
& XE_RST0_RX_OVERRUN
) {
848 IFPRINTF(1, (ifp
, "receive overrun\n"));
850 scp
->mibdata
.dot3StatsInternalMacReceiveErrors
++;
851 XE_OUTB(XE_CR
, XE_CR_CLEAR_OVERRUN
);
855 /* Restore saved page */
858 /* Re-enable interrupts */
859 XE_OUTB(XE_CR
, XE_CR_ENABLE_INTR
);
864 * Device timeout/watchdog routine. Called automatically if we queue a packet
865 * for transmission but don't get an interrupt within a specified timeout
866 * (usually 5 seconds). When this happens we assume the worst and reset the
870 xe_watchdog(struct ifnet
*ifp
) {
871 struct xe_softc
*scp
= ifp
->if_softc
;
873 if_printf(ifp
, "watchdog timeout; resetting card\n");
875 ifp
->if_oerrors
+= scp
->tx_queued
;
883 * Change media selection.
886 xe_media_change(struct ifnet
*ifp
) {
887 struct xe_softc
*scp
= ifp
->if_softc
;
889 IFPRINTF(2, (ifp
, "media_change\n"));
891 if (IFM_TYPE(scp
->ifm
->ifm_media
) != IFM_ETHER
)
895 * Some card/media combos aren't always possible -- filter those out here.
897 if ((IFM_SUBTYPE(scp
->ifm
->ifm_media
) == IFM_AUTO
||
898 IFM_SUBTYPE(scp
->ifm
->ifm_media
) == IFM_100_TX
) && !scp
->phy_ok
)
901 xe_setmedia_serialized(scp
);
908 * Return current media selection.
911 xe_media_status(struct ifnet
*ifp
, struct ifmediareq
*mrp
) {
913 IFPRINTF(3, (ifp
, "media_status\n"));
915 /* XXX - This is clearly wrong. Will fix once I have CE2 working */
916 mrp
->ifm_status
= IFM_AVALID
| IFM_ACTIVE
;
917 mrp
->ifm_active
= ((struct xe_softc
*)ifp
->if_softc
)->media
;
922 xe_setmedia(void *xscp
)
924 struct xe_softc
*scp
= xscp
;
926 lwkt_serialize_enter(scp
->arpcom
.ac_if
.if_serializer
);
927 xe_setmedia_serialized(xscp
);
928 lwkt_serialize_exit(scp
->arpcom
.ac_if
.if_serializer
);
932 * Select active media.
936 xe_setmedia_serialized(void *xscp
)
938 struct xe_softc
*scp
= xscp
;
939 u_int16_t bmcr
, bmsr
, anar
, lpar
;
941 IFPRINTF(2, (scp
->ifp
, "setmedia\n"));
943 /* Cancel any pending timeout */
944 callout_stop(&scp
->xe_timer
);
945 xe_disable_intr(scp
);
948 scp
->media
= IFM_ETHER
;
949 switch (IFM_SUBTYPE(scp
->ifm
->ifm_media
)) {
951 case IFM_AUTO
: /* Autoselect media */
952 scp
->media
= IFM_ETHER
|IFM_AUTO
;
955 * Autoselection is really awful. It goes something like this:
957 * Wait until the transmitter goes idle (2sec timeout).
959 * IF a 100Mbit PHY exists
960 * Start NWAY autonegotiation (3.5sec timeout)
962 * Select 100baseTX or 10baseT, whichever was detected
965 * IF a 100Mbit PHY exists
966 * Try to force a 100baseTX link (3sec timeout)
975 * IF nothing selected so far
976 * IF a 100Mbit PHY exists
979 * Select 10baseT or 10base2, whichever is connected
983 switch (scp
->autoneg_status
) {
985 case XE_AUTONEG_NONE
:
986 IFPRINTF(2, (scp
->ifp
, "Waiting for idle transmitter\n"));
987 scp
->arpcom
.ac_if
.if_flags
|= IFF_OACTIVE
;
988 scp
->autoneg_status
= XE_AUTONEG_WAITING
;
991 case XE_AUTONEG_WAITING
:
992 if (scp
->tx_queued
!= 0) {
993 callout_reset(&scp
->xe_timer
, hz
/ 2, xe_setmedia
, scp
);
997 IFPRINTF(2, (scp
->ifp
, "Starting autonegotiation\n"));
998 bmcr
= xe_phy_readreg(scp
, PHY_BMCR
);
999 bmcr
&= ~(PHY_BMCR_AUTONEGENBL
);
1000 xe_phy_writereg(scp
, PHY_BMCR
, bmcr
);
1001 anar
= xe_phy_readreg(scp
, PHY_ANAR
);
1002 anar
&= ~(PHY_ANAR_100BT4
|PHY_ANAR_100BTXFULL
|PHY_ANAR_10BTFULL
);
1003 anar
|= PHY_ANAR_100BTXHALF
|PHY_ANAR_10BTHALF
;
1004 xe_phy_writereg(scp
, PHY_ANAR
, anar
);
1005 bmcr
|= PHY_BMCR_AUTONEGENBL
|PHY_BMCR_AUTONEGRSTR
;
1006 xe_phy_writereg(scp
, PHY_BMCR
, bmcr
);
1007 scp
->autoneg_status
= XE_AUTONEG_STARTED
;
1008 callout_reset(&scp
->xe_timer
, hz
* 7 / 2, xe_setmedia
, scp
);
1012 scp
->autoneg_status
= XE_AUTONEG_FAIL
;
1016 case XE_AUTONEG_STARTED
:
1017 bmsr
= xe_phy_readreg(scp
, PHY_BMSR
);
1018 lpar
= xe_phy_readreg(scp
, PHY_LPAR
);
1019 if (bmsr
& (PHY_BMSR_AUTONEGCOMP
|PHY_BMSR_LINKSTAT
)) {
1020 IFPRINTF(2, (scp
->ifp
, "Autonegotiation complete!\n"));
1022 * XXX - Shouldn't have to do this, but (on my hub at least) the
1023 * XXX - transmitter won't work after a successful autoneg. So we see
1024 * XXX - what the negotiation result was and force that mode. I'm
1025 * XXX - sure there is an easy fix for this.
1027 if (lpar
& PHY_LPAR_100BTXHALF
) {
1028 xe_phy_writereg(scp
, PHY_BMCR
, PHY_BMCR_SPEEDSEL
);
1031 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) | 0x08);
1032 scp
->media
= IFM_ETHER
|IFM_100_TX
;
1033 scp
->autoneg_status
= XE_AUTONEG_NONE
;
1037 * XXX - Bit of a hack going on in here.
1038 * XXX - This is derived from Ken Hughes patch to the Linux driver
1039 * XXX - to make it work with 10Mbit _autonegotiated_ links on CE3B
1040 * XXX - cards. What's a CE3B and how's it differ from a plain CE3?
1041 * XXX - these are the things we need to find out.
1043 xe_phy_writereg(scp
, PHY_BMCR
, 0x0000);
1046 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) | 0x08);
1047 XE_SELECT_PAGE(0x42);
1048 XE_OUTB(XE_SWC1
, 0x80);
1049 scp
->media
= IFM_ETHER
|IFM_10_T
;
1050 scp
->autoneg_status
= XE_AUTONEG_NONE
;
1052 /*XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);*/ /* Disable PHY? */
1053 /*scp->autoneg_status = XE_AUTONEG_FAIL;*/
1057 IFPRINTF(2, (scp
->ifp
, "Autonegotiation failed; trying 100baseTX\n"));
1060 xe_phy_writereg(scp
, PHY_BMCR
, PHY_BMCR_SPEEDSEL
);
1061 scp
->autoneg_status
= XE_AUTONEG_100TX
;
1062 callout_reset(&scp
->xe_timer
, hz
* 3, xe_setmedia
, scp
);
1066 scp
->autoneg_status
= XE_AUTONEG_FAIL
;
1071 case XE_AUTONEG_100TX
:
1072 xe_phy_readreg(scp
, PHY_BMSR
);
1073 bmsr
= xe_phy_readreg(scp
, PHY_BMSR
);
1074 if (bmsr
& PHY_BMSR_LINKSTAT
) {
1075 IFPRINTF(2, (scp
->ifp
, "Got 100baseTX link!\n"));
1078 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) | 0x08);
1079 scp
->media
= IFM_ETHER
|IFM_100_TX
;
1080 scp
->autoneg_status
= XE_AUTONEG_NONE
;
1083 IFPRINTF(2, (scp
->ifp
, "Autonegotiation failed; disabling PHY\n"));
1085 xe_phy_writereg(scp
, PHY_BMCR
, 0x0000);
1087 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) & ~0x08); /* Disable PHY? */
1088 scp
->autoneg_status
= XE_AUTONEG_FAIL
;
1094 * If we got down here _and_ autoneg_status is XE_AUTONEG_FAIL, then
1095 * either autonegotiation failed, or never got started to begin with. In
1096 * either case, select a suitable 10Mbit media and hope it works. We
1097 * don't need to reset the card again, since it will have been done
1098 * already by the big switch above.
1100 if (scp
->autoneg_status
== XE_AUTONEG_FAIL
) {
1101 IFPRINTF(2, (scp
->ifp
, "Selecting 10baseX\n"));
1103 XE_SELECT_PAGE(0x42);
1104 XE_OUTB(XE_SWC1
, 0x80);
1105 scp
->media
= IFM_ETHER
|IFM_10_T
;
1106 scp
->autoneg_status
= XE_AUTONEG_NONE
;
1110 XE_OUTB(XE_GPR0
, 4);
1112 XE_SELECT_PAGE(0x42);
1113 XE_OUTB(XE_SWC1
, (XE_INB(XE_ESR
) & XE_ESR_MEDIA_SELECT
) ? 0x80 : 0xc0);
1114 scp
->media
= IFM_ETHER
|((XE_INB(XE_ESR
) & XE_ESR_MEDIA_SELECT
) ? IFM_10_T
: IFM_10_2
);
1115 scp
->autoneg_status
= XE_AUTONEG_NONE
;
1122 * If a specific media has been requested, we just reset the card and
1123 * select it (one small exception -- if 100baseTX is requested by there is
1124 * no PHY, we fall back to 10baseT operation).
1126 case IFM_100_TX
: /* Force 100baseTX */
1128 IFPRINTF(2, (scp
->ifp
, "Selecting 100baseTX\n"));
1129 XE_SELECT_PAGE(0x42);
1130 XE_OUTB(XE_SWC1
, 0);
1131 xe_phy_writereg(scp
, PHY_BMCR
, PHY_BMCR_SPEEDSEL
);
1133 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) | 0x08);
1134 scp
->media
|= IFM_100_TX
;
1139 case IFM_10_T
: /* Force 10baseT */
1140 IFPRINTF(2, (scp
->ifp
, "Selecting 10baseT\n"));
1142 xe_phy_writereg(scp
, PHY_BMCR
, 0x0000);
1144 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) & ~0x08); /* Disable PHY */
1146 XE_SELECT_PAGE(0x42);
1147 XE_OUTB(XE_SWC1
, 0x80);
1148 scp
->media
|= IFM_10_T
;
1152 IFPRINTF(2, (scp
->ifp
, "Selecting 10base2\n"));
1153 XE_SELECT_PAGE(0x42);
1154 XE_OUTB(XE_SWC1
, 0xc0);
1155 scp
->media
|= IFM_10_2
;
1161 * Finally, the LEDs are set to match whatever media was chosen and the
1162 * transmitter is unblocked.
1164 IFPRINTF(2, (scp
->ifp
, "Setting LEDs\n"));
1166 switch (IFM_SUBTYPE(scp
->media
)) {
1169 XE_OUTB(XE_LED
, 0x3b);
1171 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1175 XE_OUTB(XE_LED
, 0x3a);
1179 /* Restart output? */
1180 xe_enable_intr(scp
);
1181 scp
->ifp
->if_flags
&= ~IFF_OACTIVE
;
1182 if_devstart(scp
->ifp
);
1187 * Hard reset (power cycle) the card.
1190 xe_reset(struct xe_softc
*scp
) {
1191 IFPRINTF(2, (scp
->ifp
, "hard_reset\n"));
1197 XE_OUTB(XE_GPR1
, 0);
1200 /* Power up again */
1202 XE_OUTB(XE_GPR1
, XE_GPR1_POWER_DOWN
);
1204 XE_OUTB(XE_GPR1
, XE_GPR1_POWER_DOWN
|XE_GPR1_AIC
);
1214 * Take interface offline. This is done by powering down the device, which I
1215 * assume means just shutting down the transceiver and Ethernet logic. This
1216 * requires a _hard_ reset to recover from, as we need to power up again.
1219 xe_stop(struct xe_softc
*scp
) {
1220 IFPRINTF(2, (scp
->ifp
, "stop\n"));
1225 * Shut off interrupts.
1227 xe_disable_intr(scp
);
1233 XE_OUTB(XE_GPR1
, 0);
1237 * set GP1 and GP2 as outputs (bits 2 & 3)
1238 * set GP1 high to power on the ML6692 (bit 0)
1239 * set GP2 low to power on the 10Mhz chip (bit 1)
1242 XE_OUTB(XE_GPR0
, XE_GPR0_GP2_SELECT
|XE_GPR0_GP1_SELECT
|XE_GPR0_GP1_OUT
);
1246 * ~IFF_RUNNING == interface down.
1248 scp
->ifp
->if_flags
&= ~IFF_RUNNING
;
1249 scp
->ifp
->if_flags
&= ~IFF_OACTIVE
;
1250 scp
->ifp
->if_timer
= 0;
1257 * Enable interrupts from the card.
1260 xe_enable_intr(struct xe_softc
*scp
) {
1261 IFPRINTF(2, (scp
->ifp
, "enable_intr\n"));
1264 XE_OUTB(XE_CR
, XE_CR_ENABLE_INTR
); /* Enable interrupts */
1265 if (scp
->modem
&& !scp
->dingo
) { /* This bit is just magic */
1266 if (!(XE_INB(0x10) & 0x01)) {
1267 XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
1274 * Disable interrupts from the card.
1277 xe_disable_intr(struct xe_softc
*scp
) {
1278 IFPRINTF(2, (scp
->ifp
, "disable_intr\n"));
1281 XE_OUTB(XE_CR
, 0); /* Disable interrupts */
1282 if (scp
->modem
&& !scp
->dingo
) { /* More magic */
1283 XE_OUTB(0x10, 0x10); /* Mask the master int enable bit */
1289 * Set up multicast filter and promiscuous modes.
1292 xe_set_multicast(struct xe_softc
*scp
) {
1294 struct ifmultiaddr
*ifma
;
1297 ifp
= &scp
->arpcom
.ac_if
;
1299 IFPRINTF(2, (ifp
, "set_multicast\n"));
1301 XE_SELECT_PAGE(0x42);
1303 /* Handle PROMISC flag */
1304 if (ifp
->if_flags
& IFF_PROMISC
) {
1305 XE_OUTB(XE_SWC1
, XE_INB(XE_SWC1
) | XE_SWC1_PROMISCUOUS
);
1309 XE_OUTB(XE_SWC1
, XE_INB(XE_SWC1
) & ~XE_SWC1_PROMISCUOUS
);
1311 /* Handle ALLMULTI flag */
1312 if (ifp
->if_flags
& IFF_ALLMULTI
) {
1313 XE_OUTB(XE_SWC1
, XE_INB(XE_SWC1
) | XE_SWC1_ALLMULTI
);
1317 XE_OUTB(XE_SWC1
, XE_INB(XE_SWC1
) & ~XE_SWC1_ALLMULTI
);
1319 /* Iterate over multicast address list */
1321 LIST_FOREACH(ifma
, &ifp
->if_multiaddrs
, ifma_link
) {
1322 if (ifma
->ifma_addr
->sa_family
!= AF_LINK
)
1328 /* First 9 use Individual Addresses for exact matching */
1329 xe_set_addr(scp
, LLADDR((struct sockaddr_dl
*)ifma
->ifma_addr
), count
);
1332 /* Use hash filter on Mohawk and Dingo */
1333 xe_set_hash(scp
, LLADDR((struct sockaddr_dl
*)ifma
->ifma_addr
));
1335 /* Nowhere else to put them on CE2 */
1339 IFPRINTF(2, (ifp
, "set_multicast: count = %u\n", count
));
1341 /* Now do some cleanup and enable multicast handling as needed */
1343 /* Disable all multicast handling */
1345 XE_SELECT_PAGE(0x42);
1346 XE_OUTB(XE_SWC1
, XE_INB(XE_SWC1
) & ~(XE_SWC1_IA_ENABLE
|XE_SWC1_ALLMULTI
));
1348 XE_SELECT_PAGE(0x02);
1349 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) & ~XE_MSR_HASH_TABLE
);
1352 else if (count
< 10) {
1353 /* Full in any unused Individual Addresses with our MAC address */
1354 for (i
= count
+ 1; i
< 10; i
++)
1355 xe_set_addr(scp
, (u_int8_t
*)(&scp
->arpcom
.ac_enaddr
), i
);
1356 /* Enable Individual Address matching only */
1357 XE_SELECT_PAGE(0x42);
1358 XE_OUTB(XE_SWC1
, (XE_INB(XE_SWC1
) & ~XE_SWC1_ALLMULTI
) | XE_SWC1_IA_ENABLE
);
1360 XE_SELECT_PAGE(0x02);
1361 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) & ~XE_MSR_HASH_TABLE
);
1366 /* Check whether hash table is full */
1367 XE_SELECT_PAGE(0x58);
1368 for (i
= 0x08; i
< 0x10; i
++)
1369 if (XE_INB(i
) != 0xff)
1372 /* Hash table full - enable promiscuous multicast matching */
1373 XE_SELECT_PAGE(0x42);
1374 XE_OUTB(XE_SWC1
, (XE_INB(XE_SWC1
) & ~XE_SWC1_IA_ENABLE
) | XE_SWC1_ALLMULTI
);
1375 XE_SELECT_PAGE(0x02);
1376 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) & ~XE_MSR_HASH_TABLE
);
1379 /* Enable hash table and Individual Address matching */
1380 XE_SELECT_PAGE(0x42);
1381 XE_OUTB(XE_SWC1
, (XE_INB(XE_SWC1
) & ~XE_SWC1_ALLMULTI
) | XE_SWC1_IA_ENABLE
);
1382 XE_SELECT_PAGE(0x02);
1383 XE_OUTB(XE_MSR
, XE_INB(XE_MSR
) | XE_MSR_HASH_TABLE
);
1387 /* Enable promiscuous multicast matching */
1388 XE_SELECT_PAGE(0x42);
1389 XE_OUTB(XE_SWC1
, (XE_INB(XE_SWC1
) & ~XE_SWC1_IA_ENABLE
) | XE_SWC1_ALLMULTI
);
1397 * Copy the Ethernet multicast address in addr to the on-chip registers for
1398 * Individual Address idx. Assumes that addr is really a multicast address
1399 * and that idx > 0 (slot 0 is always used for the card MAC address).
1402 xe_set_addr(struct xe_softc
*scp
, u_int8_t
* addr
, unsigned idx
) {
1407 * Individual Addresses are stored in registers 8-F of pages 0x50-0x57. IA1
1408 * therefore starts at register 0xE on page 0x50. The expressions below
1409 * compute the starting page and register for any IA index > 0.
1412 page
= 0x50 + idx
%4 + idx
/4*3;
1413 reg
= 0x0e - 2 * (idx
%4);
1415 IFPRINTF(3, (scp
->ifp
, "set_addr: idx = %u, page = 0x%02x, reg = 0x%02x\n",
1419 * Copy the IA bytes. Note that the byte order is reversed for Mohawk and
1420 * Dingo wrt. CE2 hardware.
1422 XE_SELECT_PAGE(page
);
1423 for (i
= 0; i
< 6; i
++) {
1426 DPRINTF(3, (":%02x", addr
[i
]));
1428 IFPRINTF(3, (scp
->ifp
, "set_addr: %02x", addr
[0]));
1431 XE_OUTB(reg
, addr
[scp
->mohawk
? 5 - i
: i
]);
1432 if (++reg
== 0x10) {
1434 XE_SELECT_PAGE(++page
);
1442 * Set the appropriate bit in the multicast hash table for the supplied
1443 * Ethernet multicast address addr. Assumes that addr is really a multicast
1447 xe_set_hash(struct xe_softc
* scp
, u_int8_t
* addr
) {
1448 u_int32_t crc
= 0xffffffff;
1449 u_int8_t bit
, byte
, crc31
, idx
;
1452 /* Compute CRC of the address -- standard Ethernet CRC function */
1453 for (i
= 0; i
< 6; i
++) {
1455 for (j
= 1; j
<= 8; j
++) {
1456 if (crc
& 0x80000000)
1460 bit
= crc31
^ (byte
& 0x01);
1464 crc
= (crc
^ XE_CRC_POLY
)|1;
1468 IFPRINTF(3, (scp
->ifp
, "set_hash: CRC = 0x%08x\n", crc
));
1470 /* Hash table index = 6 msbs of CRC, reversed */
1471 for (i
= 0, idx
= 0; i
< 6; i
++) {
1473 if (crc
& 0x80000000) {
1479 /* Top 3 bits of idx give register - 8, bottom 3 give bit within register */
1480 byte
= idx
>> 3 | 0x08;
1481 bit
= 0x01 << (idx
& 0x07);
1483 IFPRINTF(3, (scp
->ifp
,
1484 "set_hash: idx = 0x%02x, byte = 0x%02x, bit = 0x%02x\n",
1487 XE_SELECT_PAGE(0x58);
1488 XE_OUTB(byte
, XE_INB(byte
) | bit
);
1493 * Write an outgoing packet to the card using programmed I/O.
1496 xe_pio_write_packet(struct xe_softc
*scp
, struct mbuf
*mbp
) {
1500 u_int8_t savebyte
[2];
1502 /* Get total packet length */
1503 if (mbp
->m_flags
& M_PKTHDR
)
1504 len
= mbp
->m_pkthdr
.len
;
1506 struct mbuf
* mbp2
= mbp
;
1507 for (len
= 0; mbp2
!= NULL
; len
+= mbp2
->m_len
, mbp2
= mbp2
->m_next
);
1510 IFPRINTF(3, (scp
->ifp
, "pio_write_packet: len = %u\n", len
));
1512 /* Packets < minimum length may need to be padded out */
1514 if (len
< scp
->tx_min
) {
1515 pad
= scp
->tx_min
- len
;
1519 /* Check transmit buffer space */
1521 XE_OUTW(XE_TRS
, len
+2); /* Only effective on rev. 1 CE2 cards */
1522 if ((XE_INW(XE_TSO
) & 0x7fff) <= len
+ 2)
1525 /* Send packet length to card */
1526 XE_OUTW(XE_EDP
, len
);
1529 * Write packet to card using PIO (code stolen from the ed driver)
1532 while (mbp
!= NULL
) {
1535 data
= mtod(mbp
, caddr_t
);
1536 if (wantbyte
) { /* Finish the last word */
1537 savebyte
[1] = *data
;
1538 XE_OUTW(XE_EDP
, *(u_short
*)savebyte
);
1543 if (len
> 1) { /* Output contiguous words */
1544 bus_space_write_multi_2(scp
->bst
, scp
->bsh
, XE_EDP
, (u_int16_t
*) data
,
1549 if (len
== 1) { /* Save last byte, if necessary */
1550 savebyte
[0] = *data
;
1558 * Send last byte of odd-length packets
1561 XE_OUTB(XE_EDP
, savebyte
[0]);
1564 * Can just tell CE3 cards to send; short packets will be padded out with
1565 * random cruft automatically. For CE2, manually pad the packet with
1566 * garbage; it will be sent when the required number or bytes have been
1567 * delivered to the card.
1570 XE_OUTB(XE_CR
, XE_CR_TX_PACKET
| XE_CR_RESTART_TX
| XE_CR_ENABLE_INTR
);
1573 XE_OUTB(XE_EDP
, 0xaa);
1576 XE_OUTW(XE_EDP
, 0xdead);
1585 /**************************************************************
1587 * M I I F U N C T I O N S *
1589 **************************************************************/
1592 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1593 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1594 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1595 * XXX - some kind of common MII-handling code, shared by all drivers. But
1596 * XXX - that's a whole other mission.
1598 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1599 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1603 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1606 xe_mii_sync(struct xe_softc
*scp
) {
1610 XE_MII_SET(XE_MII_DIR
|XE_MII_WRD
);
1612 for (i
= 0; i
< 32; i
++) {
1613 XE_MII_SET(XE_MII_CLK
);
1615 XE_MII_CLR(XE_MII_CLK
);
1622 * Look for a MII-compliant PHY. If we find one, reset it.
1625 xe_mii_init(struct xe_softc
*scp
) {
1628 status
= xe_phy_readreg(scp
, PHY_BMSR
);
1629 if ((status
& 0xff00) != 0x7800) {
1630 IFPRINTF(2, (scp
->ifp
, "no PHY found, %0x\n", status
));
1634 IFPRINTF(2, (scp
->ifp
, "PHY OK!\n"));
1637 xe_phy_writereg(scp
, PHY_BMCR
, PHY_BMCR_RESET
);
1639 while(xe_phy_readreg(scp
, PHY_BMCR
) & PHY_BMCR_RESET
);
1647 * Clock a series of bits through the MII.
1650 xe_mii_send(struct xe_softc
*scp
, u_int32_t bits
, int cnt
) {
1654 XE_MII_CLR(XE_MII_CLK
);
1656 for (i
= (0x1 << (cnt
- 1)); i
; i
>>= 1) {
1658 XE_MII_SET(XE_MII_WRD
);
1660 XE_MII_CLR(XE_MII_WRD
);
1663 XE_MII_CLR(XE_MII_CLK
);
1665 XE_MII_SET(XE_MII_CLK
);
1671 * Read an PHY register through the MII.
1674 xe_mii_readreg(struct xe_softc
*scp
, struct xe_mii_frame
*frame
) {
1680 * Set up frame for RX.
1682 frame
->mii_stdelim
= XE_MII_STARTDELIM
;
1683 frame
->mii_opcode
= XE_MII_READOP
;
1684 frame
->mii_turnaround
= 0;
1685 frame
->mii_data
= 0;
1688 XE_OUTB(XE_GPR2
, 0);
1691 * Turn on data xmit.
1693 XE_MII_SET(XE_MII_DIR
);
1698 * Send command/address info.
1700 xe_mii_send(scp
, frame
->mii_stdelim
, 2);
1701 xe_mii_send(scp
, frame
->mii_opcode
, 2);
1702 xe_mii_send(scp
, frame
->mii_phyaddr
, 5);
1703 xe_mii_send(scp
, frame
->mii_regaddr
, 5);
1706 XE_MII_CLR((XE_MII_CLK
|XE_MII_WRD
));
1708 XE_MII_SET(XE_MII_CLK
);
1711 /* Turn off xmit. */
1712 XE_MII_CLR(XE_MII_DIR
);
1715 XE_MII_CLR(XE_MII_CLK
);
1717 ack
= XE_INB(XE_GPR2
) & XE_MII_RDD
;
1718 XE_MII_SET(XE_MII_CLK
);
1722 * Now try reading data bits. If the ack failed, we still
1723 * need to clock through 16 cycles to keep the PHY(s) in sync.
1726 for(i
= 0; i
< 16; i
++) {
1727 XE_MII_CLR(XE_MII_CLK
);
1729 XE_MII_SET(XE_MII_CLK
);
1735 for (i
= 0x8000; i
; i
>>= 1) {
1736 XE_MII_CLR(XE_MII_CLK
);
1739 if (XE_INB(XE_GPR2
) & XE_MII_RDD
)
1740 frame
->mii_data
|= i
;
1743 XE_MII_SET(XE_MII_CLK
);
1749 XE_MII_CLR(XE_MII_CLK
);
1751 XE_MII_SET(XE_MII_CLK
);
1763 * Write to a PHY register through the MII.
1766 xe_mii_writereg(struct xe_softc
*scp
, struct xe_mii_frame
*frame
) {
1771 * Set up frame for TX.
1773 frame
->mii_stdelim
= XE_MII_STARTDELIM
;
1774 frame
->mii_opcode
= XE_MII_WRITEOP
;
1775 frame
->mii_turnaround
= XE_MII_TURNAROUND
;
1780 * Turn on data output.
1782 XE_MII_SET(XE_MII_DIR
);
1786 xe_mii_send(scp
, frame
->mii_stdelim
, 2);
1787 xe_mii_send(scp
, frame
->mii_opcode
, 2);
1788 xe_mii_send(scp
, frame
->mii_phyaddr
, 5);
1789 xe_mii_send(scp
, frame
->mii_regaddr
, 5);
1790 xe_mii_send(scp
, frame
->mii_turnaround
, 2);
1791 xe_mii_send(scp
, frame
->mii_data
, 16);
1794 XE_MII_SET(XE_MII_CLK
);
1796 XE_MII_CLR(XE_MII_CLK
);
1802 XE_MII_CLR(XE_MII_DIR
);
1811 * Read a register from the PHY.
1814 xe_phy_readreg(struct xe_softc
*scp
, u_int16_t reg
) {
1815 struct xe_mii_frame frame
;
1817 bzero((char *)&frame
, sizeof(frame
));
1819 frame
.mii_phyaddr
= 0;
1820 frame
.mii_regaddr
= reg
;
1821 xe_mii_readreg(scp
, &frame
);
1823 return(frame
.mii_data
);
1828 * Write to a PHY register.
1831 xe_phy_writereg(struct xe_softc
*scp
, u_int16_t reg
, u_int16_t data
) {
1832 struct xe_mii_frame frame
;
1834 bzero((char *)&frame
, sizeof(frame
));
1836 frame
.mii_phyaddr
= 0;
1837 frame
.mii_regaddr
= reg
;
1838 frame
.mii_data
= data
;
1839 xe_mii_writereg(scp
, &frame
);
1846 * A bit of debugging code.
1849 xe_mii_dump(struct xe_softc
*scp
) {
1854 if_printf(scp
->ifp
, "MII registers: ");
1855 for (i
= 0; i
< 2; i
++) {
1856 kprintf(" %d:%04x", i
, xe_phy_readreg(scp
, i
));
1858 for (i
= 4; i
< 7; i
++) {
1859 kprintf(" %d:%04x", i
, xe_phy_readreg(scp
, i
));
1867 xe_reg_dump(struct xe_softc
*scp
) {
1872 if_printf(scp
->ifp
, "Common registers: ");
1873 for (i
= 0; i
< 8; i
++) {
1874 kprintf(" %2.2x", XE_INB(i
));
1878 for (page
= 0; page
<= 8; page
++) {
1879 if_printf(scp
->ifp
, "Register page %2.2x: ", page
);
1880 XE_SELECT_PAGE(page
);
1881 for (i
= 8; i
< 16; i
++) {
1882 kprintf(" %2.2x", XE_INB(i
));
1887 for (page
= 0x10; page
< 0x5f; page
++) {
1888 if ((page
>= 0x11 && page
<= 0x3f) ||
1890 (page
>= 0x43 && page
<= 0x4f) ||
1893 if_printf(scp
->ifp
, "Register page %2.2x: ", page
);
1894 XE_SELECT_PAGE(page
);
1895 for (i
= 8; i
< 16; i
++) {
1896 kprintf(" %2.2x", XE_INB(i
));
1905 xe_activate(device_t dev
)
1907 struct xe_softc
*sc
= device_get_softc(dev
);
1910 DEVPRINTF(2, (dev
, "activate\n"));
1913 sc
->port_rid
= 0; /* 0 is managed by pccard */
1914 sc
->port_res
= bus_alloc_resource(dev
, SYS_RES_IOPORT
,
1915 &sc
->port_rid
, 0, ~0, 16, RF_ACTIVE
);
1916 } else if (sc
->dingo
) {
1918 * Find a 16 byte aligned ioport for the card.
1920 DEVPRINTF(1, (dev
, "Finding an aligned port for RealPort\n"));
1921 sc
->port_rid
= 1; /* 0 is managed by pccard */
1924 sc
->port_res
= bus_alloc_resource(dev
,
1925 SYS_RES_IOPORT
, &sc
->port_rid
, start
, 0x3ff, 16,
1927 if (sc
->port_res
== 0)
1928 break; /* we failed */
1929 if ((rman_get_start(sc
->port_res
) & 0xf) == 0)
1931 bus_release_resource(dev
, SYS_RES_IOPORT
, sc
->port_rid
,
1933 start
= (rman_get_start(sc
->port_res
) + 15) & ~0xf;
1935 DEVPRINTF(1, (dev
, "RealPort port 0x%0lx, size 0x%0lx\n",
1936 bus_get_resource_start(dev
, SYS_RES_IOPORT
, sc
->port_rid
),
1937 bus_get_resource_count(dev
, SYS_RES_IOPORT
, sc
->port_rid
)));
1941 * Find contiguous I/O port for the Ethernet function on CEM2 and
1942 * CEM3 cards. We allocate window 0 wherever pccard has decided
1943 * it should be, then find an available window adjacent to it for
1944 * the second function. Not sure that both windows are actually
1947 DEVPRINTF(1, (dev
, "Finding I/O port for CEM2/CEM3\n"));
1948 sc
->ce2_port_rid
= 0; /* 0 is managed by pccard */
1949 sc
->ce2_port_res
= bus_alloc_resource(dev
, SYS_RES_IOPORT
,
1950 &sc
->ce2_port_rid
, 0, ~0,
1952 if (!sc
->ce2_port_res
) {
1953 device_printf(dev
, "Cannot allocate I/O port for modem\n");
1958 start
= bus_get_resource_start(dev
, SYS_RES_IOPORT
,
1960 for (i
= 0; i
< 2; i
++) {
1961 start
+= (i
== 0 ? 8 : -24);
1962 sc
->port_res
= bus_alloc_resource(dev
, SYS_RES_IOPORT
,
1963 &sc
->port_rid
, start
,
1964 start
+ 18, 18, RF_ACTIVE
);
1965 if (sc
->port_res
== 0)
1966 continue; /* Failed, try again if possible */
1967 if (bus_get_resource_start(dev
, SYS_RES_IOPORT
,
1968 sc
->port_rid
) == start
)
1969 break; /* Success! */
1971 bus_release_resource(dev
, SYS_RES_IOPORT
, sc
->port_rid
,
1975 DEVPRINTF(1, (dev
, "CEM2/CEM3 port 0x%0lx, size 0x%0lx\n",
1976 bus_get_resource_start(dev
, SYS_RES_IOPORT
, sc
->port_rid
),
1977 bus_get_resource_count(dev
, SYS_RES_IOPORT
, sc
->port_rid
)));
1979 if (!sc
->port_res
) {
1980 device_printf(dev
, "Cannot allocate ioport\n");
1985 sc
->irq_res
= bus_alloc_resource_any(dev
, SYS_RES_IRQ
, &sc
->irq_rid
,
1988 device_printf(dev
, "Cannot allocate irq\n");
1993 sc
->bst
= rman_get_bustag(sc
->port_res
);
1994 sc
->bsh
= rman_get_bushandle(sc
->port_res
);
1999 xe_deactivate(device_t dev
)
2001 struct xe_softc
*sc
= device_get_softc(dev
);
2003 DEVPRINTF(2, (dev
, "deactivate\n"));
2004 xe_disable_intr(sc
);
2007 bus_release_resource(dev
, SYS_RES_IOPORT
, sc
->port_rid
,
2010 if (sc
->ce2_port_res
)
2011 bus_release_resource(dev
, SYS_RES_IOPORT
, sc
->ce2_port_rid
,
2013 sc
->ce2_port_res
= 0;
2015 bus_release_resource(dev
, SYS_RES_IRQ
, sc
->irq_rid
,