2 * Copyright (c) 1994-1998
3 * Paul Richards. All rights reserved.
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 * verbatim and that no modifications are made prior to this
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Paul Richards.
18 * 4. The name Paul Richards may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * $FreeBSD: src/sys/i386/isa/if_lnc.c,v 1.68.2.5 2002/02/13 00:43:10 dillon Exp $
34 * $DragonFly: src/sys/dev/netif/lnc/Attic/if_lnc.c,v 1.4 2003/08/27 09:38:31 rob Exp $
43 * This driver will need bounce buffer support when dma'ing to mbufs above the
46 * Check all the XXX comments -- some of them are just things I've left
47 * unfinished rather than "difficult" problems that were hacked around.
51 * Check how all the arpcom flags get set and used.
53 * Re-inline and re-static all routines after debugging.
55 * Remember to assign iobase in SHMEM probe routines.
57 * Replace all occurences of LANCE-controller-card etc in prints by the name
58 * strings of the appropriate type -- nifty window dressing
60 * Add DEPCA support -- mostly done.
69 /* Some defines that should really be in generic locations */
71 #define MULTICAST_FILTER_LEN 8
73 #include <sys/param.h>
74 #include <sys/systm.h>
76 #include <sys/sockio.h>
77 #include <sys/malloc.h>
79 #include <sys/socket.h>
80 #include <sys/syslog.h>
82 #include <net/ethernet.h>
84 #include <net/if_dl.h>
85 #include <net/if_types.h>
87 #include <netinet/in.h>
88 #include <netinet/if_ether.h>
93 #include <machine/clock.h>
95 #include <machine/md_var.h>
97 #include <bus/isa/i386/isa_device.h>
101 struct arpcom arpcom; /* see ../../net/if_arp.h */
102 struct nic_info nic; /* NIC specific info */
104 struct host_ring_entry *recv_ring; /* start of alloc'd mem */
107 struct host_ring_entry *trans_ring;
109 struct init_block *init_block; /* Initialisation block */
110 int pending_transmits; /* No. of transmit descriptors in use */
124 static struct lnc_softc lnc_softc[NLNC];
126 static char const * const nic_ident[] = {
131 "CNET98S", /* PC-98 */
134 static char const * const ic_ident[] = {
149 static void lnc_setladrf (struct lnc_softc *sc);
150 static void lnc_stop (struct lnc_softc *sc);
151 static void lnc_reset (struct lnc_softc *sc);
152 static void lnc_free_mbufs (struct lnc_softc *sc);
153 static __inline int alloc_mbuf_cluster (struct lnc_softc *sc,
154 struct host_ring_entry *desc);
155 static __inline struct mbuf *chain_mbufs (struct lnc_softc *sc,
158 static __inline struct mbuf *mbuf_packet (struct lnc_softc *sc,
161 static __inline void lnc_rint (struct lnc_softc *sc);
162 static __inline void lnc_tint (struct lnc_softc *sc);
163 static int lnc_probe (struct isa_device *isa_dev);
165 static int cnet98s_probe (struct lnc_softc *sc, unsigned iobase);
167 static int ne2100_probe (struct lnc_softc *sc, unsigned iobase);
168 static int bicc_probe (struct lnc_softc *sc, unsigned iobase);
169 static int dec_macaddr_extract (u_char ring[], struct lnc_softc *sc);
170 static int depca_probe (struct lnc_softc *sc, unsigned iobase);
171 static int lance_probe (struct lnc_softc *sc);
172 static int pcnet_probe (struct lnc_softc *sc);
173 static int lnc_attach_sc (struct lnc_softc *sc, int unit);
174 static int lnc_attach (struct isa_device *isa_dev);
175 static void lnc_init (void *);
176 static ointhand2_t lncintr;
177 static __inline int mbuf_to_buffer (struct mbuf *m, char *buffer);
178 static __inline struct mbuf *chain_to_cluster (struct mbuf *m);
179 static void lnc_start (struct ifnet *ifp);
180 static int lnc_ioctl (struct ifnet *ifp, u_long command, caddr_t data);
181 static void lnc_watchdog (struct ifnet *ifp);
183 void lnc_dump_state (struct lnc_softc *sc);
184 void mbuf_dump_chain (struct mbuf *m);
188 void *lnc_attach_ne2100_pci (int unit, unsigned iobase);
190 void lncintr_sc (struct lnc_softc *sc);
192 struct isa_driver lncdriver = {lnc_probe, lnc_attach, "lnc"};
195 write_csr(struct lnc_softc *sc, u_short port, u_short val)
201 static __inline u_short
202 read_csr(struct lnc_softc *sc, u_short port)
205 return (inw(sc->rdp));
209 write_bcr(struct lnc_softc *sc, u_short port, u_short val)
215 static __inline u_short
216 read_bcr(struct lnc_softc *sc, u_short port)
219 return (inw(sc->bdp));
222 static __inline u_long
223 ether_crc(const u_char *ether_addr)
225 #define POLYNOMIAL 0xEDB88320UL
227 u_int crc = 0xFFFFFFFFUL;
229 for (i = 0; i < ETHER_ADDR_LEN; i++) {
230 addr = *ether_addr++;
231 for (j = 0; j < MULTICAST_FILTER_LEN; j++) {
232 crc = (crc >> 1) ^ (((crc ^ addr) & 1) ? POLYNOMIAL : 0);
241 * Set up the logical address filter for multicast packets
244 lnc_setladrf(struct lnc_softc *sc)
246 struct ifnet *ifp = &sc->arpcom.ac_if;
247 struct ifmultiaddr *ifma;
251 if (sc->flags & IFF_ALLMULTI) {
252 for (i=0; i < MULTICAST_FILTER_LEN; i++)
253 sc->init_block->ladrf[i] = 0xFF;
258 * For each multicast address, calculate a crc for that address and
259 * then use the high order 6 bits of the crc as a hash code where
260 * bits 3-5 select the byte of the address filter and bits 0-2 select
261 * the bit within that byte.
264 bzero(sc->init_block->ladrf, MULTICAST_FILTER_LEN);
265 for (ifma = ifp->if_multiaddrs.lh_first; ifma;
266 ifma = ifma->ifma_link.le_next) {
267 if (ifma->ifma_addr->sa_family != AF_LINK)
270 index = ether_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr))
272 sc->init_block->ladrf[index >> 3] |= 1 << (index & 7);
277 lnc_stop(struct lnc_softc *sc)
279 write_csr(sc, CSR0, STOP);
283 lnc_reset(struct lnc_softc *sc)
289 lnc_free_mbufs(struct lnc_softc *sc)
294 * We rely on other routines to keep the buff.mbuf field valid. If
295 * it's not NULL then we assume it points to an allocated mbuf.
298 for (i = 0; i < NDESC(sc->nrdre); i++)
299 if ((sc->recv_ring + i)->buff.mbuf)
300 m_free((sc->recv_ring + i)->buff.mbuf);
302 for (i = 0; i < NDESC(sc->ntdre); i++)
303 if ((sc->trans_ring + i)->buff.mbuf)
304 m_free((sc->trans_ring + i)->buff.mbuf);
311 alloc_mbuf_cluster(struct lnc_softc *sc, struct host_ring_entry *desc)
313 register struct mds *md = desc->md;
317 /* Try and get cluster off local cache */
318 if (sc->mbuf_count) {
321 sc->mbufs = m->m_next;
322 /* XXX m->m_data = m->m_ext.ext_buf;*/
324 MGET(m, M_DONTWAIT, MT_DATA);
327 MCLGET(m, M_DONTWAIT);
328 if (!m->m_ext.ext_buf) {
335 addr = kvtop(m->m_data);
337 md->md1= ((addr >> 16) & 0xff) | OWN;
338 md->md2 = -(short)(MCLBYTES - sizeof(struct pkthdr));
343 static __inline struct mbuf *
344 chain_mbufs(struct lnc_softc *sc, int start_of_packet, int pkt_len)
346 struct mbuf *head, *m;
347 struct host_ring_entry *desc;
350 * Turn head into a pkthdr mbuf --
351 * assumes a pkthdr type mbuf was
352 * allocated to the descriptor
356 desc = sc->recv_ring + start_of_packet;
358 head = desc->buff.mbuf;
359 head->m_flags |= M_PKTHDR;
364 m->m_len = min((MCLBYTES - sizeof(struct pkthdr)), pkt_len);
366 if (alloc_mbuf_cluster(sc, desc))
367 return((struct mbuf *)NULL);
368 INC_MD_PTR(start_of_packet, sc->nrdre)
369 desc = sc->recv_ring + start_of_packet;
370 m->m_next = desc->buff.mbuf;
371 } while (start_of_packet != sc->recv_next);
377 static __inline struct mbuf *
378 mbuf_packet(struct lnc_softc *sc, int start_of_packet, int pkt_len)
381 struct host_ring_entry *start;
382 struct mbuf *head,*m,*m_prev;
383 char *data,*mbuf_data;
387 /* Get a pkthdr mbuf for the start of packet */
388 MGETHDR(head, M_DONTWAIT, MT_DATA);
390 LNCSTATS(drop_packet)
396 start = sc->recv_ring + start_of_packet;
397 /*blen = -(start->md->md2);*/
398 blen = RECVBUFSIZE; /* XXX More PCnet-32 crap */
399 data = start->buff.data;
400 mbuf_data = m->m_data;
402 while (start_of_packet != sc->recv_next) {
404 * If the data left fits in a single buffer then set
405 * blen to the size of the data left.
411 * amount is least of data in current ring buffer and
412 * amount of space left in current mbuf.
414 amount = min(blen, M_TRAILINGSPACE(m));
416 /* mbuf must be empty */
418 MGET(m, M_DONTWAIT, MT_DATA);
423 if (pkt_len >= MINCLSIZE)
424 MCLGET(m, M_DONTWAIT);
427 amount = min(blen, M_TRAILINGSPACE(m));
428 mbuf_data = m->m_data;
430 bcopy(data, mbuf_data, amount);
438 start->md->md1 &= HADR;
439 start->md->md1 |= OWN;
440 start->md->md2 = -RECVBUFSIZE; /* XXX - shouldn't be necessary */
441 INC_MD_PTR(start_of_packet, sc->nrdre)
442 start = sc->recv_ring + start_of_packet;
443 data = start->buff.data;
444 /*blen = -(start->md->md2);*/
445 blen = RECVBUFSIZE; /* XXX More PCnet-32 crap */
453 lnc_rint(struct lnc_softc *sc)
455 struct host_ring_entry *next, *start;
458 struct ether_header *eh;
464 * The LANCE will issue a RINT interrupt when the ownership of the
465 * last buffer of a receive packet has been relinquished by the LANCE.
466 * Therefore, it can be assumed that a complete packet can be found
467 * before hitting buffers that are still owned by the LANCE, if not
468 * then there is a bug in the driver that is causing the descriptors
469 * to get out of sync.
473 if ((sc->recv_ring + sc->recv_next)->md->md1 & OWN) {
474 int unit = sc->arpcom.ac_if.if_unit;
475 log(LOG_ERR, "lnc%d: Receive interrupt with buffer still owned by controller -- Resetting\n", unit);
479 if (!((sc->recv_ring + sc->recv_next)->md->md1 & STP)) {
480 int unit = sc->arpcom.ac_if.if_unit;
481 log(LOG_ERR, "lnc%d: Receive interrupt but not start of packet -- Resetting\n", unit);
488 next = sc->recv_ring + sc->recv_next;
489 while ((flags = next->md->md1) & STP) {
491 /* Make a note of the start of the packet */
492 start_of_packet = sc->recv_next;
495 * Find the end of the packet. Even if not data chaining,
496 * jabber packets can overrun into a second descriptor.
497 * If there is no error, then the ENP flag is set in the last
498 * descriptor of the packet. If there is an error then the ERR
499 * flag will be set in the descriptor where the error occured.
500 * Therefore, to find the last buffer of a packet we search for
504 if (!(flags & (ENP | MDERR))) {
506 INC_MD_PTR(sc->recv_next, sc->nrdre)
507 next = sc->recv_ring + sc->recv_next;
508 flags = next->md->md1;
509 } while (!(flags & (STP | OWN | ENP | MDERR)));
512 int unit = sc->arpcom.ac_if.if_unit;
513 log(LOG_ERR, "lnc%d: Start of packet found before end of previous in receive ring -- Resetting\n", unit);
520 * Looked ahead into a packet still
523 sc->recv_next = start_of_packet;
526 int unit = sc->arpcom.ac_if.if_unit;
527 log(LOG_ERR, "lnc%d: End of received packet not found-- Resetting\n", unit);
534 pkt_len = (next->md->md3 & MCNT) - FCS_LEN;
536 /* Move pointer onto start of next packet */
537 INC_MD_PTR(sc->recv_next, sc->nrdre)
538 next = sc->recv_ring + sc->recv_next;
541 int unit = sc->arpcom.ac_if.if_unit;
544 log(LOG_ERR, "lnc%d: Receive buffer error\n", unit);
547 /* OFLO only valid if ENP is not set */
548 if (!(flags & ENP)) {
550 log(LOG_ERR, "lnc%d: Receive overflow error \n", unit);
552 } else if (flags & ENP) {
553 if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC)==0) {
555 * FRAM and CRC are valid only if ENP
556 * is set and OFLO is not.
560 log(LOG_ERR, "lnc%d: Framing error\n", unit);
562 * FRAM is only set if there's a CRC
563 * error so avoid multiple messages
565 } else if (flags & CRC) {
567 log(LOG_ERR, "lnc%d: Receive CRC error\n", unit);
574 sc->arpcom.ac_if.if_ierrors++;
575 while (start_of_packet != sc->recv_next) {
576 start = sc->recv_ring + start_of_packet;
577 start->md->md2 = -RECVBUFSIZE; /* XXX - shouldn't be necessary */
578 start->md->md1 &= HADR;
579 start->md->md1 |= OWN;
580 INC_MD_PTR(start_of_packet, sc->nrdre)
582 } else { /* Valid packet */
584 sc->arpcom.ac_if.if_ipackets++;
587 if (sc->nic.mem_mode == DMA_MBUF)
588 head = chain_mbufs(sc, start_of_packet, pkt_len);
590 head = mbuf_packet(sc, start_of_packet, pkt_len);
594 * First mbuf in packet holds the
595 * ethernet and packet headers
597 head->m_pkthdr.rcvif = &sc->arpcom.ac_if;
598 head->m_pkthdr.len = pkt_len ;
599 eh = (struct ether_header *) head->m_data;
602 * vmware ethernet hardware emulation loops
603 * packets back to itself, violates IFF_SIMPLEX.
604 * drop it if it is from myself.
606 if (bcmp(eh->ether_shost,
607 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN) == 0) {
610 /* Skip over the ether header */
611 head->m_data += sizeof *eh;
612 head->m_len -= sizeof *eh;
613 head->m_pkthdr.len -= sizeof *eh;
615 ether_input(&sc->arpcom.ac_if, eh, head);
619 int unit = sc->arpcom.ac_if.if_unit;
620 log(LOG_ERR,"lnc%d: Packet dropped, no mbufs\n",unit);
621 LNCSTATS(drop_packet)
629 * At this point all completely received packets have been processed
630 * so clear RINT since any packets that have arrived while we were in
631 * here have been dealt with.
634 outw(sc->rdp, RINT | INEA);
638 lnc_tint(struct lnc_softc *sc)
640 struct host_ring_entry *next, *start;
645 * If the driver is reset in this routine then we return immediately to
646 * the interrupt driver routine. Any interrupts that have occured
647 * since the reset will be dealt with there. sc->trans_next
648 * should point to the start of the first packet that was awaiting
649 * transmission after the last transmit interrupt was dealt with. The
650 * LANCE should have relinquished ownership of that descriptor before
651 * the interrupt. Therefore, sc->trans_next should point to a
652 * descriptor with STP set and OWN cleared. If not then the driver's
653 * pointers are out of sync with the LANCE, which signifies a bug in
654 * the driver. Therefore, the following two checks are really
655 * diagnostic, since if the driver is working correctly they should
660 if ((sc->trans_ring + sc->trans_next)->md->md1 & OWN) {
661 int unit = sc->arpcom.ac_if.if_unit;
662 log(LOG_ERR, "lnc%d: Transmit interrupt with buffer still owned by controller -- Resetting\n", unit);
670 * The LANCE will write the status information for the packet it just
671 * tried to transmit in one of two places. If the packet was
672 * transmitted successfully then the status will be written into the
673 * last descriptor of the packet. If the transmit failed then the
674 * status will be written into the descriptor that was being accessed
675 * when the error occured and all subsequent descriptors in that
676 * packet will have been relinquished by the LANCE.
678 * At this point we know that sc->trans_next points to the start
679 * of a packet that the LANCE has just finished trying to transmit.
680 * We now search for a buffer with either ENP or ERR set.
686 start_of_packet = sc->trans_next;
687 next = sc->trans_ring + sc->trans_next;
690 if (!(next->md->md1 & STP)) {
691 int unit = sc->arpcom.ac_if.if_unit;
692 log(LOG_ERR, "lnc%d: Transmit interrupt but not start of packet -- Resetting\n", unit);
699 * Find end of packet.
702 if (!(next->md->md1 & (ENP | MDERR))) {
704 INC_MD_PTR(sc->trans_next, sc->ntdre)
705 next = sc->trans_ring + sc->trans_next;
706 } while (!(next->md->md1 & (STP | OWN | ENP | MDERR)));
708 if (next->md->md1 & STP) {
709 int unit = sc->arpcom.ac_if.if_unit;
710 log(LOG_ERR, "lnc%d: Start of packet found before end of previous in transmit ring -- Resetting\n", unit);
714 if (next->md->md1 & OWN) {
717 * Looked ahead into a packet still
720 sc->trans_next = start_of_packet;
723 int unit = sc->arpcom.ac_if.if_unit;
724 log(LOG_ERR, "lnc%d: End of transmitted packet not found -- Resetting\n", unit);
731 * Check for ERR first since other flags are irrelevant if an
734 if (next->md->md1 & MDERR) {
736 int unit = sc->arpcom.ac_if.if_unit;
739 sc->arpcom.ac_if.if_oerrors++;
741 if (next->md->md3 & LCOL) {
743 log(LOG_ERR, "lnc%d: Transmit late collision -- Net error?\n", unit);
744 sc->arpcom.ac_if.if_collisions++;
746 * Clear TBUFF since it's not valid when LCOL
749 next->md->md3 &= ~TBUFF;
751 if (next->md->md3 & LCAR) {
753 log(LOG_ERR, "lnc%d: Loss of carrier during transmit -- Net error?\n", unit);
755 if (next->md->md3 & RTRY) {
757 log(LOG_ERR, "lnc%d: Transmit of packet failed after 16 attempts -- TDR = %d\n", unit, ((sc->trans_ring + sc->trans_next)->md->md3 & TDR));
758 sc->arpcom.ac_if.if_collisions += 16;
760 * Clear TBUFF since it's not valid when RTRY
763 next->md->md3 &= ~TBUFF;
766 * TBUFF is only valid if neither LCOL nor RTRY are set.
767 * We need to check UFLO after LCOL and RTRY so that we
768 * know whether or not TBUFF is valid. If either are
769 * set then TBUFF will have been cleared above. A
770 * UFLO error will turn off the transmitter so we
775 if (next->md->md3 & UFLO) {
778 * If an UFLO has occured it's possibly due
781 if (next->md->md3 & TBUFF) {
783 log(LOG_ERR, "lnc%d: Transmit buffer error -- Resetting\n", unit);
785 log(LOG_ERR, "lnc%d: Transmit underflow error -- Resetting\n", unit);
790 INC_MD_PTR(sc->trans_next, sc->ntdre)
791 next = sc->trans_ring + sc->trans_next;
792 } while (!(next->md->md1 & STP) && (sc->trans_next != sc->next_to_send));
796 * Since we check for ERR first then if we get here
797 * the packet was transmitted correctly. There may
798 * still have been non-fatal errors though.
799 * Don't bother checking for DEF, waste of time.
802 sc->arpcom.ac_if.if_opackets++;
804 if (next->md->md1 & MORE) {
806 sc->arpcom.ac_if.if_collisions += 2;
810 * ONE is invalid if LCOL is set. If LCOL was set then
811 * ERR would have also been set and we would have
812 * returned from lnc_tint above. Therefore we can
813 * assume if we arrive here that ONE is valid.
817 if (next->md->md1 & ONE) {
819 sc->arpcom.ac_if.if_collisions++;
821 INC_MD_PTR(sc->trans_next, sc->ntdre)
822 next = sc->trans_ring + sc->trans_next;
826 * Clear descriptors and free any mbufs.
830 start = sc->trans_ring + start_of_packet;
831 start->md->md1 &= HADR;
832 if (sc->nic.mem_mode == DMA_MBUF) {
833 /* Cache clusters on a local queue */
834 if ((start->buff.mbuf->m_flags & M_EXT) && (sc->mbuf_count < MBUF_CACHE_LIMIT)) {
835 if (sc->mbuf_count) {
836 start->buff.mbuf->m_next = sc->mbufs;
837 sc->mbufs = start->buff.mbuf;
839 sc->mbufs = start->buff.mbuf;
841 start->buff.mbuf = 0;
843 /* XXX shouldn't this be m_freem ?? */
844 m_free(start->buff.mbuf);
845 start->buff.mbuf = NULL;
848 sc->pending_transmits--;
849 INC_MD_PTR(start_of_packet, sc->ntdre)
850 }while (start_of_packet != sc->trans_next);
853 * There's now at least one free descriptor
854 * in the ring so indicate that we can accept
855 * more packets again.
858 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
862 } while (sc->pending_transmits && !(next->md->md1 & OWN));
865 * Clear TINT since we've dealt with all
866 * the completed transmissions.
869 outw(sc->rdp, TINT | INEA);
871 /* XXX only while doing if_is comparisons */
872 if (!(sc->arpcom.ac_if.if_flags & IFF_OACTIVE))
873 lnc_start(&sc->arpcom.ac_if);
878 lnc_probe(struct isa_device * isa_dev)
881 int unit = isa_dev->id_unit;
882 struct lnc_softc *sc = &lnc_softc[unit];
883 unsigned iobase = isa_dev->id_iobase;
887 vsw = inw(isa_dev->id_iobase + PCNET_VSW);
888 printf("Vendor Specific Word = %x\n", vsw);
891 nports = bicc_probe(sc, iobase);
893 nports = ne2100_probe(sc, iobase);
895 nports = depca_probe(sc, iobase);
898 nports = cnet98s_probe(sc, iobase);
904 /* ISA Bus Configuration Registers */
905 /* XXX - Should be in ic/Am7990.h */
906 #define MSRDA 0x0000 /* ISACSR0: Master Mode Read Activity */
907 #define MSWRA 0x0001 /* ISACSR1: Master Mode Write Activity */
908 #define MC 0x0002 /* ISACSR2: Miscellaneous Configuration */
910 #define LED1 0x0005 /* ISACSR5: LED1 Status */
911 #define LED2 0x0006 /* ISACSR6: LED2 Status */
912 #define LED3 0x0007 /* ISACSR7: LED3 Status */
914 #define LED_PSE 0x0080 /* Pulse Stretcher */
915 #define LED_XMTE 0x0010 /* Transmit Status */
916 #define LED_RVPOLE 0x0008 /* Receive Polarity */
917 #define LED_RCVE 0x0004 /* Receive Status */
918 #define LED_JABE 0x0002 /* Jabber */
919 #define LED_COLE 0x0001 /* Collision */
922 cnet98s_probe(struct lnc_softc *sc, unsigned iobase)
927 sc->rap = iobase + CNET98S_RAP;
928 sc->rdp = iobase + CNET98S_RDP;
931 tmp = inw(iobase + CNET98S_RESET);
932 outw(iobase + CNET98S_RESET, tmp);
935 sc->nic.ic = pcnet_probe(sc);
936 if ((sc->nic.ic == UNKNOWN) || (sc->nic.ic > PCnet_32)) {
940 sc->nic.ident = CNET98S;
941 sc->nic.mem_mode = DMA_FIXED;
943 /* XXX - For now just use the defines */
947 /* Extract MAC address from PROM */
948 for (i = 0; i < ETHER_ADDR_LEN; i++) {
949 sc->arpcom.ac_enaddr[i] = inb(iobase + (i * 2));
955 * XXX - Following parameters are Contec C-NET(98)S only.
956 * So, check the Ethernet address here.
958 * Contec uses 00 80 4c ?? ?? ??
960 if (sc->arpcom.ac_enaddr[0] == (u_char)0x00
961 && sc->arpcom.ac_enaddr[1] == (u_char)0x80
962 && sc->arpcom.ac_enaddr[2] == (u_char)0x4c) {
963 outw(sc->rap, MSRDA);
964 outw(iobase + CNET98S_IDP, 0x0006);
965 outw(sc->rap, MSWRA);
966 outw(iobase + CNET98S_IDP, 0x0006);
969 printf("ISACSR2 = %x\n", inw(iobase + CNET98S_IDP));
972 outw(iobase + CNET98S_IDP, LED_PSE | LED_XMTE);
974 outw(iobase + CNET98S_IDP, LED_PSE | LED_RCVE);
976 outw(iobase + CNET98S_IDP, LED_PSE | LED_COLE);
979 return (CNET98S_IOSIZE);
984 ne2100_probe(struct lnc_softc *sc, unsigned iobase)
988 sc->rap = iobase + PCNET_RAP;
989 sc->rdp = iobase + PCNET_RDP;
991 sc->nic.ic = pcnet_probe(sc);
992 if ((sc->nic.ic > 0) && (sc->nic.ic < PCnet_PCI)) {
993 sc->nic.ident = NE2100;
994 sc->nic.mem_mode = DMA_FIXED;
996 /* XXX - For now just use the defines */
1000 /* Extract MAC address from PROM */
1001 for (i = 0; i < ETHER_ADDR_LEN; i++)
1002 sc->arpcom.ac_enaddr[i] = inb(iobase + i);
1003 return (NE2100_IOSIZE);
1010 bicc_probe(struct lnc_softc *sc, unsigned iobase)
1015 * There isn't any way to determine if a NIC is a BICC. Basically, if
1016 * the lance probe succeeds using the i/o addresses of the BICC then
1017 * we assume it's a BICC.
1021 sc->rap = iobase + BICC_RAP;
1022 sc->rdp = iobase + BICC_RDP;
1024 /* I think all these cards us the Am7990 */
1026 if ((sc->nic.ic = lance_probe(sc))) {
1027 sc->nic.ident = BICC;
1028 sc->nic.mem_mode = DMA_FIXED;
1030 /* XXX - For now just use the defines */
1034 /* Extract MAC address from PROM */
1035 for (i = 0; i < ETHER_ADDR_LEN; i++)
1036 sc->arpcom.ac_enaddr[i] = inb(iobase + (i * 2));
1038 return (BICC_IOSIZE);
1045 * I don't have data sheets for the dec cards but it looks like the mac
1046 * address is contained in a 32 byte ring. Each time you read from the port
1047 * you get the next byte in the ring. The mac address is stored after a
1048 * signature so keep searching for the signature first.
1051 dec_macaddr_extract(u_char ring[], struct lnc_softc * sc)
1053 const unsigned char signature[] = {0xff, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x55, 0xaa};
1057 for (i = 0; i < sizeof ring; i++) {
1058 for (j = 0, rindex = i; j < sizeof signature; j++) {
1059 if (ring[rindex] != signature[j])
1061 if (++rindex > sizeof ring)
1064 if (j == sizeof signature) {
1065 for (j = 0, rindex = i; j < ETHER_ADDR_LEN; j++) {
1066 sc->arpcom.ac_enaddr[j] = ring[rindex];
1067 if (++rindex > sizeof ring)
1077 depca_probe(struct lnc_softc *sc, unsigned iobase)
1080 unsigned char maddr_ring[DEPCA_ADDR_ROM_SIZE];
1082 sc->rap = iobase + DEPCA_RAP;
1083 sc->rdp = iobase + DEPCA_RDP;
1085 if ((sc->nic.ic = lance_probe(sc))) {
1086 sc->nic.ident = DEPCA;
1087 sc->nic.mem_mode = SHMEM;
1089 /* Extract MAC address from PROM */
1090 for (i = 0; i < DEPCA_ADDR_ROM_SIZE; i++)
1091 maddr_ring[i] = inb(iobase + DEPCA_ADP);
1092 if (dec_macaddr_extract(maddr_ring, sc)) {
1093 return (DEPCA_IOSIZE);
1100 lance_probe(struct lnc_softc *sc)
1102 write_csr(sc, CSR0, STOP);
1104 if ((inw(sc->rdp) & STOP) && !(read_csr(sc, CSR3))) {
1106 * Check to see if it's a C-LANCE. For the LANCE the INEA bit
1107 * cannot be set while the STOP bit is. This restriction is
1108 * removed for the C-LANCE.
1110 write_csr(sc, CSR0, INEA);
1111 if (read_csr(sc, CSR0) & INEA)
1120 pcnet_probe(struct lnc_softc *sc)
1126 * The PCnet family don't reset the RAP register on reset so we'll
1127 * have to write during the probe :-) It does have an ID register
1128 * though so the probe is just a matter of reading it.
1131 if ((type = lance_probe(sc))) {
1132 chip_id = read_csr(sc, CSR89);
1134 chip_id |= read_csr(sc, CSR88);
1135 if (chip_id & AMD_MASK) {
1137 switch (chip_id & PART_MASK) {
1141 return (PCnet_ISAplus);
1143 return (PCnet_ISA_II);
1149 return (PCnet_PCI_II);
1151 return (PCnet_FAST);
1154 return (PCnet_FASTplus);
1156 return (PCnet_Home);
1166 lnc_attach_sc(struct lnc_softc *sc, int unit)
1171 * Allocate memory for use by the controller.
1173 * XXX -- the Am7990 and Am79C960 only have 24 address lines and so can
1174 * only access the lower 16Mb of physical memory. For the moment we
1175 * assume that malloc will allocate memory within the lower 16Mb
1176 * range. This is not a very valid assumption but there's nothing
1177 * that can be done about it yet. For shared memory NICs this isn't
1182 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
1183 sizeof(struct host_ring_entry));
1185 if (sc->nic.mem_mode != SHMEM)
1186 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
1187 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) +
1190 /* If using DMA to fixed host buffers then allocate memory for them */
1192 if (sc->nic.mem_mode == DMA_FIXED)
1193 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) + (NDESC(sc->ntdre) * TRANSBUFSIZE);
1195 if (sc->nic.mem_mode != SHMEM) {
1196 if (sc->nic.ic < PCnet_32) {
1197 /* ISA based cards */
1198 sc->recv_ring = contigmalloc(lnc_mem_size, M_DEVBUF, M_NOWAIT,
1199 0ul, 0xfffffful, 4ul, 0x1000000);
1201 /* Non-ISA based cards, 32 bit capable */
1204 * For the 32 bit driver we're not fussed where we DMA to
1205 * though it'll still need to be contiguous
1207 sc->recv_ring = malloc(lnc_mem_size, M_DEVBUF, M_NOWAIT);
1210 * For now it still needs to be below 16MB because the
1211 * descriptor's can only hold 16 bit addresses.
1213 sc->recv_ring = contigmalloc(lnc_mem_size, M_DEVBUF, M_NOWAIT,
1214 0ul, 0xfffffful, 4ul, 0x1000000);
1219 if (!sc->recv_ring) {
1220 log(LOG_ERR, "lnc%d: Couldn't allocate memory for NIC\n", unit);
1221 return (0); /* XXX -- attach failed -- not tested in
1222 * calling routines */
1225 /* Set default mode */
1226 sc->nic.mode = NORMAL;
1228 /* Fill in arpcom structure entries */
1230 sc->arpcom.ac_if.if_softc = sc;
1231 sc->arpcom.ac_if.if_name = lncdriver.name;
1232 sc->arpcom.ac_if.if_unit = unit;
1233 sc->arpcom.ac_if.if_mtu = ETHERMTU;
1234 sc->arpcom.ac_if.if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1235 sc->arpcom.ac_if.if_timer = 0;
1236 sc->arpcom.ac_if.if_output = ether_output;
1237 sc->arpcom.ac_if.if_start = lnc_start;
1238 sc->arpcom.ac_if.if_ioctl = lnc_ioctl;
1239 sc->arpcom.ac_if.if_watchdog = lnc_watchdog;
1240 sc->arpcom.ac_if.if_init = lnc_init;
1241 sc->arpcom.ac_if.if_type = IFT_ETHER;
1242 sc->arpcom.ac_if.if_addrlen = ETHER_ADDR_LEN;
1243 sc->arpcom.ac_if.if_hdrlen = ETHER_HDR_LEN;
1244 sc->arpcom.ac_if.if_snd.ifq_maxlen = IFQ_MAXLEN;
1246 ether_ifattach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED);
1248 printf("lnc%d: ", unit);
1249 if (sc->nic.ic == LANCE || sc->nic.ic == C_LANCE)
1251 nic_ident[sc->nic.ident], ic_ident[sc->nic.ic]);
1253 printf("%s", ic_ident[sc->nic.ic]);
1254 printf(" address %6D\n", sc->arpcom.ac_enaddr, ":");
1260 lnc_attach(struct isa_device * isa_dev)
1262 int unit = isa_dev->id_unit;
1263 struct lnc_softc *sc = &lnc_softc[unit];
1266 isa_dev->id_ointr = lncintr;
1267 result = lnc_attach_sc (sc, unit);
1273 * XXX - is it safe to call isa_dmacascade() after if_attach()
1274 * and ether_ifattach() have been called in lnc_attach() ???
1276 if ((sc->nic.mem_mode != SHMEM) &&
1277 (sc->nic.ic < PCnet_32))
1278 isa_dmacascade(isa_dev->id_drq);
1286 lnc_attach_ne2100_pci(int unit, unsigned iobase)
1289 struct lnc_softc *sc = malloc(sizeof *sc, M_DEVBUF, M_NOWAIT);
1292 bzero (sc, sizeof *sc);
1294 sc->rap = iobase + PCNET_RAP;
1295 sc->rdp = iobase + PCNET_RDP;
1296 sc->bdp = iobase + PCNET_BDP;
1298 sc->nic.ic = pcnet_probe(sc);
1299 if (sc->nic.ic >= PCnet_32) {
1300 sc->nic.ident = NE2100;
1301 sc->nic.mem_mode = DMA_FIXED;
1303 /* XXX - For now just use the defines */
1307 /* Extract MAC address from PROM */
1308 for (i = 0; i < ETHER_ADDR_LEN; i++)
1309 sc->arpcom.ac_enaddr[i] = inb(iobase + i);
1311 if (lnc_attach_sc(sc, unit) == 0) {
1329 struct lnc_softc *sc = xsc;
1333 /* Check that interface has valid address */
1335 if (TAILQ_EMPTY(&sc->arpcom.ac_if.if_addrhead)) /* XXX unlikely */
1338 /* Shut down interface */
1342 sc->arpcom.ac_if.if_flags |= IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; /* XXX??? */
1345 * This sets up the memory area for the controller. Memory is set up for
1346 * the initialisation block (12 words of contiguous memory starting
1347 * on a word boundary),the transmit and receive ring structures (each
1348 * entry is 4 words long and must start on a quadword boundary) and
1351 * The alignment tests are particularly paranoid.
1357 sc->trans_ring = sc->recv_ring + NDESC(sc->nrdre);
1360 if (sc->nic.mem_mode == SHMEM)
1361 lnc_mem = (char *) sc->nic.iobase;
1363 lnc_mem = (char *) (sc->trans_ring + NDESC(sc->ntdre));
1365 lnc_mem = (char *)(((int)lnc_mem + 1) & ~1);
1366 sc->init_block = (struct init_block *) ((int) lnc_mem & ~1);
1367 lnc_mem = (char *) (sc->init_block + 1);
1368 lnc_mem = (char *)(((int)lnc_mem + 7) & ~7);
1370 /* Initialise pointers to descriptor entries */
1371 for (i = 0; i < NDESC(sc->nrdre); i++) {
1372 (sc->recv_ring + i)->md = (struct mds *) lnc_mem;
1373 lnc_mem += sizeof(struct mds);
1375 for (i = 0; i < NDESC(sc->ntdre); i++) {
1376 (sc->trans_ring + i)->md = (struct mds *) lnc_mem;
1377 lnc_mem += sizeof(struct mds);
1380 /* Initialise the remaining ring entries */
1382 if (sc->nic.mem_mode == DMA_MBUF) {
1387 /* Free previously allocated mbufs */
1388 if (sc->flags & LNC_INITIALISED)
1392 for (i = 0; i < NDESC(sc->nrdre); i++) {
1393 if (alloc_mbuf_cluster(sc, sc->recv_ring+i)) {
1394 log(LOG_ERR, "Initialisation failed -- no mbufs\n");
1400 for (i = 0; i < NDESC(sc->ntdre); i++) {
1401 (sc->trans_ring + i)->buff.mbuf = 0;
1402 (sc->trans_ring + i)->md->md0 = 0;
1403 (sc->trans_ring + i)->md->md1 = 0;
1404 (sc->trans_ring + i)->md->md2 = 0;
1405 (sc->trans_ring + i)->md->md3 = 0;
1408 for (i = 0; i < NDESC(sc->nrdre); i++) {
1409 (sc->recv_ring + i)->md->md0 = kvtop(lnc_mem);
1410 (sc->recv_ring + i)->md->md1 = ((kvtop(lnc_mem) >> 16) & 0xff) | OWN;
1411 (sc->recv_ring + i)->md->md2 = -RECVBUFSIZE;
1412 (sc->recv_ring + i)->md->md3 = 0;
1413 (sc->recv_ring + i)->buff.data = lnc_mem;
1414 lnc_mem += RECVBUFSIZE;
1416 for (i = 0; i < NDESC(sc->ntdre); i++) {
1417 (sc->trans_ring + i)->md->md0 = kvtop(lnc_mem);
1418 (sc->trans_ring + i)->md->md1 = ((kvtop(lnc_mem) >> 16) & 0xff);
1419 (sc->trans_ring + i)->md->md2 = 0;
1420 (sc->trans_ring + i)->md->md3 = 0;
1421 (sc->trans_ring + i)->buff.data = lnc_mem;
1422 lnc_mem += TRANSBUFSIZE;
1426 sc->next_to_send = 0;
1428 /* Set up initialisation block */
1430 sc->init_block->mode = sc->nic.mode;
1432 for (i = 0; i < ETHER_ADDR_LEN; i++)
1433 sc->init_block->padr[i] = sc->arpcom.ac_enaddr[i];
1437 sc->init_block->rdra = kvtop(sc->recv_ring->md);
1438 sc->init_block->rlen = ((kvtop(sc->recv_ring->md) >> 16) & 0xff) | (sc->nrdre << 13);
1439 sc->init_block->tdra = kvtop(sc->trans_ring->md);
1440 sc->init_block->tlen = ((kvtop(sc->trans_ring->md) >> 16) & 0xff) | (sc->ntdre << 13);
1443 /* Set flags to show that the memory area is valid */
1444 sc->flags |= LNC_INITIALISED;
1446 sc->pending_transmits = 0;
1448 /* Give the LANCE the physical address of the initialisation block */
1450 if (sc->nic.ic == PCnet_Home) {
1452 /* Set PHY_SEL to HomeRun */
1453 media = read_bcr(sc, BCR49);
1456 write_bcr(sc, BCR49, media);
1459 write_csr(sc, CSR1, kvtop(sc->init_block));
1460 write_csr(sc, CSR2, (kvtop(sc->init_block) >> 16) & 0xff);
1463 * Depending on which controller this is, CSR3 has different meanings.
1464 * For the Am7990 it controls DMA operations, for the Am79C960 it
1465 * controls interrupt masks and transmitter algorithms. In either
1466 * case, none of the flags are set.
1470 write_csr(sc, CSR3, 0);
1472 /* Let's see if it starts */
1474 write_csr(sc, CSR0, INIT);
1475 for (i = 0; i < 1000; i++)
1476 if (read_csr(sc, CSR0) & IDON)
1480 * Now that the initialisation is complete there's no reason to
1481 * access anything except CSR0, so we leave RAP pointing there
1482 * so we can just access RDP from now on, saving an outw each
1486 if (read_csr(sc, CSR0) & IDON) {
1488 * Enable interrupts, start the LANCE, mark the interface as
1489 * running and transmit any pending packets.
1491 write_csr(sc, CSR0, STRT | INEA);
1492 sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
1493 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
1494 lnc_start(&sc->arpcom.ac_if);
1496 log(LOG_ERR, "lnc%d: Initialisation failed\n",
1497 sc->arpcom.ac_if.if_unit);
1503 * The interrupt flag (INTR) will be set and provided that the interrupt enable
1504 * flag (INEA) is also set, the interrupt pin will be driven low when any of
1505 * the following occur:
1507 * 1) Completion of the initialisation routine (IDON). 2) The reception of a
1508 * packet (RINT). 3) The transmission of a packet (TINT). 4) A transmitter
1509 * timeout error (BABL). 5) A missed packet (MISS). 6) A memory error (MERR).
1511 * The interrupt flag is cleared when all of the above conditions are cleared.
1513 * If the driver is reset from this routine then it first checks to see if any
1514 * interrupts have ocurred since the reset and handles them before returning.
1515 * This is because the NIC may signify a pending interrupt in CSR0 using the
1516 * INTR flag even if a hardware interrupt is currently inhibited (at least I
1517 * think it does from reading the data sheets). We may as well deal with
1518 * these pending interrupts now rather than get the overhead of another
1519 * hardware interrupt immediately upon returning from the interrupt handler.
1524 lncintr_sc(struct lnc_softc *sc)
1526 int unit = sc->arpcom.ac_if.if_unit;
1530 * INEA is the only bit that can be cleared by writing a 0 to it so
1531 * we have to include it in any writes that clear other flags.
1534 while ((csr0 = inw(sc->rdp)) & INTR) {
1537 * Clear interrupt flags early to avoid race conditions. The
1538 * controller can still set these flags even while we're in
1539 * this interrupt routine. If the flag is still set from the
1540 * event that caused this interrupt any new events will
1544 /* outw(sc->rdp, IDON | CERR | BABL | MISS | MERR | RINT | TINT | INEA); */
1545 outw(sc->rdp, csr0);
1547 /* We don't do anything with the IDON flag */
1551 log(LOG_ERR, "lnc%d: Heartbeat error -- SQE test failed\n", unit);
1555 log(LOG_ERR, "lnc%d: Babble error - more than 1519 bytes transmitted\n", unit);
1557 sc->arpcom.ac_if.if_oerrors++;
1560 log(LOG_ERR, "lnc%d: Missed packet -- no receive buffer\n", unit);
1562 sc->arpcom.ac_if.if_ierrors++;
1565 log(LOG_ERR, "lnc%d: Memory error -- Resetting\n", unit);
1577 sc->arpcom.ac_if.if_timer = 0;
1582 * If there's room in the transmit descriptor ring then queue
1583 * some more transmit packets.
1586 if (!(sc->arpcom.ac_if.if_flags & IFF_OACTIVE))
1587 lnc_start(&sc->arpcom.ac_if);
1594 struct lnc_softc *sc = &lnc_softc[unit];
1599 mbuf_to_buffer(struct mbuf *m, char *buffer)
1604 for( ; m; m = m->m_next) {
1605 bcopy(mtod(m, caddr_t), buffer, m->m_len);
1613 static __inline struct mbuf *
1614 chain_to_cluster(struct mbuf *m)
1618 MGET(new, M_DONTWAIT, MT_DATA);
1620 MCLGET(new, M_DONTWAIT);
1621 if (new->m_ext.ext_buf) {
1622 new->m_len = mbuf_to_buffer(m, new->m_data);
1632 * IFF_OACTIVE and IFF_RUNNING are checked in ether_output so it's redundant
1633 * to check them again since we wouldn't have got here if they were not
1634 * appropriately set. This is also called from lnc_init and lncintr but the
1635 * flags should be ok at those points too.
1639 lnc_start(struct ifnet *ifp)
1642 struct lnc_softc *sc = ifp->if_softc;
1643 struct host_ring_entry *desc;
1646 struct mbuf *head, *m;
1649 int no_entries_needed;
1653 IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, head);
1657 if (sc->nic.mem_mode == DMA_MBUF) {
1659 no_entries_needed = 0;
1660 for (m=head; m; m = m->m_next)
1661 no_entries_needed++;
1664 * We try and avoid bcopy as much as possible
1665 * but there are two cases when we use it.
1667 * 1) If there are not enough free entries in the ring
1668 * to hold each mbuf in the chain then compact the
1669 * chain into a single cluster.
1671 * 2) The Am7990 and Am79C90 must not have less than
1672 * 100 bytes in the first descriptor of a chained
1673 * packet so it's necessary to shuffle the mbuf
1674 * contents to ensure this.
1678 if (no_entries_needed > (NDESC(sc->ntdre) - sc->pending_transmits)) {
1679 if (!(head = chain_to_cluster(head))) {
1680 log(LOG_ERR, "lnc%d: Couldn't get mbuf for transmit packet -- Resetting \n ",ifp->if_unit);
1684 } else if ((sc->nic.ic == LANCE) || (sc->nic.ic == C_LANCE)) {
1685 if ((head->m_len < 100) && (head->m_next)) {
1686 len = 100 - head->m_len;
1687 if (M_TRAILINGSPACE(head) < len) {
1689 * Move data to start of data
1690 * area. We assume the first
1691 * mbuf has a packet header
1692 * and is not a cluster.
1694 bcopy((caddr_t)head->m_data, (caddr_t)head->m_pktdat, head->m_len);
1695 head->m_data = head->m_pktdat;
1698 while (m && (len > 0)) {
1699 chunk = min(len, m->m_len);
1700 bcopy(mtod(m, caddr_t), mtod(head, caddr_t) + head->m_len, chunk);
1702 head->m_len += chunk;
1705 if (m->m_len <= 0) {
1713 tmp = sc->next_to_send;
1716 * On entering this loop we know that tmp points to a
1717 * descriptor with a clear OWN bit.
1720 desc = sc->trans_ring + tmp;
1721 len = ETHER_MIN_LEN;
1722 for (m = head; m; m = m->m_next) {
1723 desc->buff.mbuf = m;
1724 addr = kvtop(m->m_data);
1725 desc->md->md0 = addr;
1726 desc->md->md1 = ((addr >> 16) & 0xff);
1728 desc->md->md2 = -m->m_len;
1729 sc->pending_transmits++;
1732 INC_MD_PTR(tmp, sc->ntdre)
1733 desc = sc->trans_ring + tmp;
1736 end_of_packet = tmp;
1737 DEC_MD_PTR(tmp, sc->ntdre)
1738 desc = sc->trans_ring + tmp;
1739 desc->md->md1 |= ENP;
1742 desc->md->md2 -= len;
1745 * Set OWN bits in reverse order, otherwise the Lance
1746 * could start sending the packet before all the
1747 * buffers have been relinquished by the host.
1750 while (tmp != sc->next_to_send) {
1751 desc->md->md1 |= OWN;
1752 DEC_MD_PTR(tmp, sc->ntdre)
1753 desc = sc->trans_ring + tmp;
1755 sc->next_to_send = end_of_packet;
1756 desc->md->md1 |= STP | OWN;
1758 sc->pending_transmits++;
1759 desc = sc->trans_ring + sc->next_to_send;
1760 len = mbuf_to_buffer(head, desc->buff.data);
1762 desc->md->md2 = -max(len, ETHER_MIN_LEN - ETHER_CRC_LEN);
1763 desc->md->md1 |= OWN | STP | ENP;
1764 INC_MD_PTR(sc->next_to_send, sc->ntdre)
1767 /* Force an immediate poll of the transmit ring */
1768 outw(sc->rdp, TDMD | INEA);
1771 * Set a timer so if the buggy Am7990.h shuts
1772 * down we can wake it up.
1777 if (sc->arpcom.ac_if.if_bpf)
1778 bpf_mtap(&sc->arpcom.ac_if, head);
1780 if (sc->nic.mem_mode != DMA_MBUF)
1783 } while (sc->pending_transmits < NDESC(sc->ntdre));
1786 * Transmit ring is full so set IFF_OACTIVE
1787 * since we can't buffer any more packets.
1790 sc->arpcom.ac_if.if_flags |= IFF_OACTIVE;
1791 LNCSTATS(trans_ring_full)
1795 lnc_ioctl(struct ifnet * ifp, u_long command, caddr_t data)
1798 struct lnc_softc *sc = ifp->if_softc;
1807 error = ether_ioctl(ifp, command, data);
1812 if (ifp->if_flags & IFF_DEBUG)
1817 if (ifp->if_flags & IFF_PROMISC) {
1818 if (!(sc->nic.mode & PROM)) {
1819 sc->nic.mode |= PROM;
1822 } else if (sc->nic.mode & PROM) {
1823 sc->nic.mode &= ~PROM;
1827 if ((ifp->if_flags & IFF_ALLMULTI) &&
1828 !(sc->flags & LNC_ALLMULTI)) {
1829 sc->flags |= LNC_ALLMULTI;
1831 } else if (!(ifp->if_flags & IFF_ALLMULTI) &&
1832 (sc->flags & LNC_ALLMULTI)) {
1833 sc->flags &= ~LNC_ALLMULTI;
1837 if ((ifp->if_flags & IFF_UP) == 0 &&
1838 (ifp->if_flags & IFF_RUNNING) != 0) {
1840 * If interface is marked down and it is running,
1844 ifp->if_flags &= ~IFF_RUNNING;
1845 } else if ((ifp->if_flags & IFF_UP) != 0 &&
1846 (ifp->if_flags & IFF_RUNNING) == 0) {
1848 * If interface is marked up and it is stopped, then
1867 lnc_watchdog(struct ifnet *ifp)
1869 log(LOG_ERR, "lnc%d: Device timeout -- Resetting\n", ifp->if_unit);
1871 lnc_reset(ifp->if_softc);
1876 lnc_dump_state(struct lnc_softc *sc)
1880 printf("\nDriver/NIC [%d] state dump\n", sc->arpcom.ac_if.if_unit);
1881 printf("Memory access mode: %b\n", sc->nic.mem_mode, MEM_MODES);
1882 printf("Host memory\n");
1883 printf("-----------\n");
1885 printf("Receive ring: base = %p, next = %p\n",
1886 (void *)sc->recv_ring, (void *)(sc->recv_ring + sc->recv_next));
1887 for (i = 0; i < NDESC(sc->nrdre); i++)
1888 printf("\t%d:%p md = %p buff = %p\n",
1889 i, (void *)(sc->recv_ring + i),
1890 (void *)(sc->recv_ring + i)->md,
1891 (void *)(sc->recv_ring + i)->buff.data);
1893 printf("Transmit ring: base = %p, next = %p\n",
1894 (void *)sc->trans_ring, (void *)(sc->trans_ring + sc->trans_next));
1895 for (i = 0; i < NDESC(sc->ntdre); i++)
1896 printf("\t%d:%p md = %p buff = %p\n",
1897 i, (void *)(sc->trans_ring + i),
1898 (void *)(sc->trans_ring + i)->md,
1899 (void *)(sc->trans_ring + i)->buff.data);
1900 printf("Lance memory (may be on host(DMA) or card(SHMEM))\n");
1901 printf("Init block = %p\n", (void *)sc->init_block);
1902 printf("\tmode = %b rlen:rdra = %x:%x tlen:tdra = %x:%x\n",
1903 sc->init_block->mode, INIT_MODE, sc->init_block->rlen,
1904 sc->init_block->rdra, sc->init_block->tlen, sc->init_block->tdra);
1905 printf("Receive descriptor ring\n");
1906 for (i = 0; i < NDESC(sc->nrdre); i++)
1907 printf("\t%d buffer = 0x%x%x, BCNT = %d,\tMCNT = %u,\tflags = %b\n",
1908 i, ((sc->recv_ring + i)->md->md1 & HADR),
1909 (sc->recv_ring + i)->md->md0,
1910 -(short) (sc->recv_ring + i)->md->md2,
1911 (sc->recv_ring + i)->md->md3,
1912 (((sc->recv_ring + i)->md->md1 & ~HADR) >> 8), RECV_MD1);
1913 printf("Transmit descriptor ring\n");
1914 for (i = 0; i < NDESC(sc->ntdre); i++)
1915 printf("\t%d buffer = 0x%x%x, BCNT = %d,\tflags = %b %b\n",
1916 i, ((sc->trans_ring + i)->md->md1 & HADR),
1917 (sc->trans_ring + i)->md->md0,
1918 -(short) (sc->trans_ring + i)->md->md2,
1919 ((sc->trans_ring + i)->md->md1 >> 8), TRANS_MD1,
1920 ((sc->trans_ring + i)->md->md3 >> 10), TRANS_MD3);
1921 printf("\nnext_to_send = %x\n", sc->next_to_send);
1922 printf("\n CSR0 = %b CSR1 = %x CSR2 = %x CSR3 = %x\n\n",
1923 read_csr(sc, CSR0), CSR0_FLAGS, read_csr(sc, CSR1),
1924 read_csr(sc, CSR2), read_csr(sc, CSR3));
1926 /* Set RAP back to CSR0 */
1927 outw(sc->rap, CSR0);
1931 mbuf_dump_chain(struct mbuf * m)
1934 #define MBUF_FLAGS \
1935 "\20\1M_EXT\2M_PKTHDR\3M_EOR\4UNKNOWN\5M_BCAST\6M_MCAST"
1938 log(LOG_DEBUG, "m == NULL\n");
1940 log(LOG_DEBUG, "m = %p\n", (void *)m);
1941 log(LOG_DEBUG, "m_hdr.mh_next = %p\n",
1942 (void *)m->m_hdr.mh_next);
1943 log(LOG_DEBUG, "m_hdr.mh_nextpkt = %p\n",
1944 (void *)m->m_hdr.mh_nextpkt);
1945 log(LOG_DEBUG, "m_hdr.mh_len = %d\n", m->m_hdr.mh_len);
1946 log(LOG_DEBUG, "m_hdr.mh_data = %p\n",
1947 (void *)m->m_hdr.mh_data);
1948 log(LOG_DEBUG, "m_hdr.mh_type = %d\n", m->m_hdr.mh_type);
1949 log(LOG_DEBUG, "m_hdr.mh_flags = %b\n", m->m_hdr.mh_flags,
1951 if (!(m->m_hdr.mh_flags & (M_PKTHDR | M_EXT)))
1952 log(LOG_DEBUG, "M_dat.M_databuf = %p\n",
1953 (void *)m->M_dat.M_databuf);
1955 if (m->m_hdr.mh_flags & M_PKTHDR) {
1956 log(LOG_DEBUG, "M_dat.MH.MH_pkthdr.len = %d\n",
1957 m->M_dat.MH.MH_pkthdr.len);
1959 "M_dat.MH.MH_pkthdr.rcvif = %p\n",
1960 (void *)m->M_dat.MH.MH_pkthdr.rcvif);
1961 if (!(m->m_hdr.mh_flags & M_EXT))
1963 "M_dat.MH.MH_dat.MH_databuf = %p\n",
1964 (void *)m->M_dat.MH.MH_dat.MH_databuf);
1966 if (m->m_hdr.mh_flags & M_EXT) {
1968 "M_dat.MH.MH_dat.MH_ext.ext_buff %p\n",
1969 (void *)m->M_dat.MH.MH_dat.MH_ext.ext_buf);
1971 "M_dat.MH.MH_dat.MH_ext.ext_free %p\n",
1972 (void *)m->M_dat.MH.MH_dat.MH_ext.ext_free);
1974 "M_dat.MH.MH_dat.MH_ext.ext_size %d\n",
1975 m->M_dat.MH.MH_dat.MH_ext.ext_size);
1978 } while ((m = m->m_next) != NULL);