2 * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
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 unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/cs/if_cs.c,v 1.19.2.1 2001/01/25 20:13:48 imp Exp $
28 * $DragonFly: src/sys/dev/netif/cs/if_cs.c,v 1.15 2005/05/24 09:52:13 joerg Exp $
32 * Device driver for Crystal Semiconductor CS8920 based ethernet
33 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
44 #include <sys/socket.h>
45 #include <sys/sockio.h>
46 #include <sys/kernel.h>
47 #include <sys/sysctl.h>
48 #include <sys/syslog.h>
50 #include <sys/module.h>
52 #include <machine/bus.h>
54 #include <machine/resource.h>
55 #include <machine/clock.h>
58 #include <net/ifq_var.h>
59 #include <net/if_arp.h>
60 #include <net/if_media.h>
61 #include <net/ethernet.h>
68 #define CS_DMA_BUFFER_SIZE 65536
70 #define CS_DMA_BUFFER_SIZE 16384
73 static int cs_recv_delay = 570;
74 SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, "");
76 static void cs_init(void *);
77 static int cs_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
78 static void cs_start(struct ifnet *);
79 static void cs_stop(struct cs_softc *);
80 static void cs_reset(struct cs_softc *);
81 static void cs_watchdog(struct ifnet *);
83 static int cs_mediachange(struct ifnet *);
84 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
85 static int cs_mediaset(struct cs_softc *, int);
87 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
88 static void cs_xmit_buf(struct cs_softc*);
89 static int cs_get_packet(struct cs_softc*);
90 static void cs_setmode(struct cs_softc*);
92 static int get_eeprom_data(struct cs_softc *sc, int, int, int *);
93 static int get_eeprom_cksum(int, int, int *);
94 static int wait_eeprom_ready( struct cs_softc *);
95 static void control_dc_dc(struct cs_softc *, int );
96 static int send_test_pkt(struct cs_softc * );
97 static int enable_tp(struct cs_softc *);
98 static int enable_aui(struct cs_softc *);
99 static int enable_bnc(struct cs_softc *);
100 static int cs_duplex_auto(struct cs_softc *);
102 devclass_t cs_devclass;
104 DECLARE_DUMMY_MODULE(if_cs);
107 get_eeprom_data( struct cs_softc *sc, int off, int len, int *buffer)
112 printf(CS_NAME":EEPROM data from %x for %x:\n", off,len);
115 for (i=0;i<len;i++) {
116 if (wait_eeprom_ready(sc) < 0) return -1;
117 /* Send command to EEPROM to read */
118 cs_writereg(sc->nic_addr, PP_EECMD, (off+i)|EEPROM_READ_CMD );
119 if (wait_eeprom_ready(sc)<0)
121 buffer[i] = cs_readreg (sc->nic_addr, PP_EEData);
124 printf("%02x %02x ",(unsigned char)buffer[i],
125 (unsigned char)buffer[i+1]);
137 get_eeprom_cksum(int off, int len, int *buffer)
150 wait_eeprom_ready(struct cs_softc *sc)
152 DELAY ( 30000 ); /* XXX should we do some checks here ? */
157 control_dc_dc(struct cs_softc *sc, int on_not_off)
159 unsigned int self_control = HCB1_ENBL;
161 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
162 self_control |= HCB1;
164 self_control &= ~HCB1;
165 cs_writereg( sc->nic_addr, PP_SelfCTL, self_control );
172 cs_duplex_auto(struct cs_softc *sc)
176 cs_writereg(sc->nic_addr, PP_AutoNegCTL,
177 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE );
178 for (i=0; cs_readreg(sc->nic_addr,PP_AutoNegST)&AUTO_NEG_BUSY; i++) {
180 printf("%s: full/half duplex "
181 "auto negotiation timeout\n",
182 sc->arpcom.ac_if.if_xname);
193 enable_tp(struct cs_softc *sc)
195 cs_writereg(sc->nic_addr, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
196 control_dc_dc(sc, 0);
199 if ((cs_readreg(sc->nic_addr, PP_LineST) & LINK_OK)==0) {
200 printf("%s: failed to enable TP\n",
201 sc->arpcom.ac_if.if_xname);
209 * XXX This was rewritten from Linux driver without any tests.
212 send_test_pkt(struct cs_softc *sc)
214 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
215 0, 46, /* A 46 in network order */
216 0, 0, /* DSAP=0 & SSAP=0 fields */
217 0xf3, 0 /* Control (Test Req + P bit set) */ };
219 u_char ether_address_backup[ETHER_ADDR_LEN];
221 for (i = 0; i < ETHER_ADDR_LEN; i++) {
222 ether_address_backup[i] = sc->arpcom.ac_enaddr[i];
225 cs_writereg(sc->nic_addr, PP_LineCTL,
226 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_TX_ON );
228 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
229 bcopy(test_packet+ETHER_ADDR_LEN,
230 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
231 outw(sc->nic_addr + TX_CMD_PORT, sc->send_cmd);
232 outw(sc->nic_addr + TX_LEN_PORT, sizeof(test_packet));
234 /* Wait for chip to allocate memory */
236 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
237 for (i = 0; i < ETHER_ADDR_LEN; i++) {
238 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
243 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
247 if ((cs_readreg(sc->nic_addr,PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
248 for (i = 0; i < ETHER_ADDR_LEN; i++) {
249 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
253 for (i = 0; i < ETHER_ADDR_LEN; i++) {
254 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
260 * XXX This was rewritten from Linux driver without any tests.
263 enable_aui(struct cs_softc *sc)
265 control_dc_dc(sc, 0);
266 cs_writereg(sc->nic_addr, PP_LineCTL,
267 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
269 if (!send_test_pkt(sc)) {
270 printf("%s failed to enable AUI\n",
271 sc->arpcom.ac_if.if_xname);
278 * XXX This was rewritten from Linux driver without any tests.
281 enable_bnc(struct cs_softc *sc)
283 control_dc_dc(sc, 1);
284 cs_writereg(sc->nic_addr, PP_LineCTL,
285 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
287 if (!send_test_pkt(sc)) {
288 printf("%s failed to enable BNC\n", sc->arpcom.ac_if.if_xname);
295 cs_cs89x0_probe(device_t dev)
303 struct cs_softc *sc = device_get_softc(dev);
305 unsigned rev_type = 0;
307 int eeprom_buff[CHKSUM_LEN];
308 int chip_type, pp_isaint, pp_isadma;
310 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
314 iobase=rman_get_start(sc->port_res);
316 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG) {
317 /* Chip not detected. Let's try to reset it */
319 device_printf(dev, "trying to reset the chip.\n");
320 outw(iobase+ADD_PORT, PP_SelfCTL);
321 i = inw(iobase+DATA_PORT);
322 outw(iobase+ADD_PORT, PP_SelfCTL);
323 outw(iobase+DATA_PORT, i | POWER_ON_RESET);
324 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG)
328 outw(iobase+ADD_PORT, PP_ChipID);
329 if (inw(iobase+DATA_PORT) != CHIP_EISA_ID_SIG)
332 rev_type = cs_readreg(iobase, PRODUCT_ID_ADD);
333 chip_type = rev_type & ~REVISON_BITS;
334 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
336 sc->nic_addr = iobase;
337 sc->chip_type = chip_type;
339 if(chip_type==CS8900) {
340 pp_isaint = PP_CS8900_ISAINT;
341 pp_isadma = PP_CS8900_ISADMA;
342 sc->send_cmd = TX_CS8900_AFTER_ALL;
344 pp_isaint = PP_CS8920_ISAINT;
345 pp_isadma = PP_CS8920_ISADMA;
346 sc->send_cmd = TX_CS8920_AFTER_ALL;
350 * Clear some fields so that fail of EEPROM will left them clean
352 sc->auto_neg_cnf = 0;
357 * If no interrupt specified (or "?"), use what the board tells us.
359 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
362 * Get data from EEPROM
364 if((cs_readreg(iobase, PP_SelfST) & EEPROM_PRESENT) == 0) {
365 device_printf(dev, "No EEPROM, assuming defaults.\n");
367 if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
368 device_printf(dev, "EEPROM read failed, "
369 "assuming defaults.\n");
371 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
372 device_printf(dev, "EEPROM cheksum bad, "
373 "assuming defaults.\n");
376 eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
378 eeprom_buff[ADAPTER_CNF_OFFSET/2];
380 eeprom_buff[ISA_CNF_OFFSET/2];
382 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
383 sc->arpcom.ac_enaddr[i*2]=
385 sc->arpcom.ac_enaddr[i*2+1]=
390 * If no interrupt specified (or "?"),
391 * use what the board tells us.
394 irq = sc->isa_config & INT_NO_MASK;
395 if (chip_type==CS8900) {
414 device_printf(dev, "invalid irq in EEPROM.\n");
418 if (irq>CS8920_NO_INTS) {
419 device_printf(dev, "invalid irq in EEPROM.\n");
427 bus_set_resource(dev, SYS_RES_IRQ, 0,
435 if (chip_type == CS8900) {
453 if (irq > CS8920_NO_INTS) {
460 cs_writereg(iobase, pp_isaint, irq);
462 device_printf(dev, "Unknown or invalid irq\n");
470 cs_writereg(iobase, pp_isadma, drq);
472 printf("%s: incorrect drq\n", sc->arpcom.ac_if.if_xname);
478 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
479 chip_type==CS8900 ? '0' : '2',
480 chip_type==CS8920M ? "M" : "",
482 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
483 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
484 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
486 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
487 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
488 sc->line_ctl = LOW_RX_SQUELCH;
497 * Allocate a port resource with the given resource id.
499 int cs_alloc_port(device_t dev, int rid, int size)
501 struct cs_softc *sc = device_get_softc(dev);
502 struct resource *res;
504 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
505 0ul, ~0ul, size, RF_ACTIVE);
509 sc->port_used = size;
517 * Allocate a memory resource with the given resource id.
519 int cs_alloc_memory(device_t dev, int rid, int size)
521 struct cs_softc *sc = device_get_softc(dev);
522 struct resource *res;
524 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
525 0ul, ~0ul, size, RF_ACTIVE);
537 * Allocate an irq resource with the given resource id.
539 int cs_alloc_irq(device_t dev, int rid, int flags)
541 struct cs_softc *sc = device_get_softc(dev);
542 struct resource *res;
544 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
545 (RF_ACTIVE | flags));
556 * Release all resources
558 void cs_release_resources(device_t dev)
560 struct cs_softc *sc = device_get_softc(dev);
563 bus_release_resource(dev, SYS_RES_IOPORT,
564 sc->port_rid, sc->port_res);
568 bus_release_resource(dev, SYS_RES_MEMORY,
569 sc->mem_rid, sc->mem_res);
573 bus_release_resource(dev, SYS_RES_IRQ,
574 sc->irq_rid, sc->irq_res);
580 * Install the interface into kernel networking data structures
583 cs_attach(device_t dev)
585 struct cs_softc *sc = device_get_softc(dev);
587 struct ifnet *ifp = &(sc->arpcom.ac_if);
592 if_initname(ifp, "cs", device_get_unit(dev));
593 ifp->if_start=cs_start;
594 ifp->if_ioctl=cs_ioctl;
595 ifp->if_watchdog=cs_watchdog;
596 ifp->if_init=cs_init;
597 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
598 ifq_set_ready(&ifp->if_snd);
603 * XXX: Ugly comments here
606 ifp->if_linkmib=&sc->mibdata;
607 ifp->if_linkmiblen=sizeof sc->mibdata;
610 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST );
613 * this code still in progress (DMA support)
616 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_WAITOK);
617 if (sc->recv_ring == NULL) {
619 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
622 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
623 < (128*1024-CS_DMA_BUFFER_SIZE))
624 sc->recv_ring+=16*1024;
627 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_WAITOK);
628 if (sc->buffer == NULL) {
629 printf("%s: Couldn't allocate memory for NIC\n",
635 * Initialize the media structures.
637 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
639 if (sc->adapter_cnf & A_CNF_10B_T) {
640 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
641 if (sc->chip_type != CS8900) {
642 ifmedia_add(&sc->media,
643 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
644 ifmedia_add(&sc->media,
645 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
649 if (sc->adapter_cnf & A_CNF_10B_2)
650 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
652 if (sc->adapter_cnf & A_CNF_AUI)
653 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
655 if (sc->adapter_cnf & A_CNF_MEDIA)
656 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
658 /* Set default media from EEPROM */
659 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
660 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
661 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
662 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
663 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
664 default: printf("%s: adapter has no media\n", ifp->if_xname);
666 ifmedia_set(&sc->media, media);
667 cs_mediaset(sc, media);
669 ether_ifattach(ifp, sc->arpcom.ac_enaddr);
675 * Initialize the board
680 struct cs_softc *sc=(struct cs_softc *)xsc;
681 struct ifnet *ifp = &sc->arpcom.ac_if;
684 /* address not known */
685 if (TAILQ_EMPTY(&ifp->if_addrhead)) /* unlikely? XXX */
689 * reset whatchdog timer
697 * Hardware initialization of cs
700 /* Enable receiver and transmitter */
701 cs_writereg(sc->nic_addr, PP_LineCTL,
702 cs_readreg( sc->nic_addr, PP_LineCTL ) |
703 SERIAL_RX_ON | SERIAL_TX_ON);
705 /* Configure the receiver mode */
709 * This defines what type of frames will cause interrupts
710 * Bad frames should generate interrupts so that the driver
711 * could track statistics of discarded packets
713 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
715 if (sc->isa_config & STREAM_TRANSFER)
716 rx_cfg |= RX_STREAM_ENBL;
717 cs_writereg(sc->nic_addr, PP_RxCFG, rx_cfg);
719 cs_writereg(sc->nic_addr, PP_TxCFG, TX_LOST_CRS_ENBL |
720 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
721 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
723 cs_writereg(sc->nic_addr, PP_BufCFG, READY_FOR_TX_ENBL |
724 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
725 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
727 /* Write MAC address into IA filter */
728 for (i=0; i<ETHER_ADDR_LEN/2; i++)
729 cs_writereg(sc->nic_addr, PP_IA+i*2,
730 sc->arpcom.ac_enaddr[i*2] |
731 (sc->arpcom.ac_enaddr[i*2+1] << 8) );
734 * Now enable everything
737 #ifdef CS_USE_64K_DMA
738 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
741 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
744 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
747 * Set running and clear output active flags
749 sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
750 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
753 * Start sending process
761 * Get the packet from the board and send it to the upper layer
765 cs_get_packet(struct cs_softc *sc)
767 struct ifnet *ifp = &(sc->arpcom.ac_if);
768 int iobase = sc->nic_addr, status, length;
775 status = inw(iobase + RX_FRAME_PORT);
776 length = inw(iobase + RX_FRAME_PORT);
779 printf("%s: rcvd: stat %x, len %d\n",
780 ifp->if_xname, status, length);
783 if (!(status & RX_OK)) {
785 printf"%s: bad pkt stat %x\n", ifp->if_xname, status);
791 MGETHDR(m, MB_DONTWAIT, MT_DATA);
795 if (length > MHLEN) {
796 MCLGET(m, MB_DONTWAIT);
797 if (!(m->m_flags & M_EXT)) {
803 /* Initialize packet's header info */
804 m->m_pkthdr.rcvif = ifp;
805 m->m_pkthdr.len = length;
809 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
812 for (i=0;i<length;i++)
813 printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
817 if (status & (RX_IA | RX_BROADCAST) ||
818 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
819 (*ifp->if_input)(ifp, m);
823 if (length==ETHER_MAX_LEN-ETHER_CRC_LEN)
824 DELAY( cs_recv_delay );
838 struct cs_softc *sc = (struct cs_softc*) arg;
839 struct ifnet *ifp = &(sc->arpcom.ac_if);
843 printf("%s: Interrupt.\n", ifp->xname);
846 while ((status=cs_readword(sc->nic_addr, ISQ_PORT))) {
849 printf("%s:from ISQ: %04x\n", ifp->if_xname, status );
852 switch (status & ISQ_EVENT_MASK) {
853 case ISQ_RECEIVER_EVENT:
857 case ISQ_TRANSMITTER_EVENT:
862 ifp->if_flags &= ~IFF_OACTIVE;
866 case ISQ_BUFFER_EVENT:
867 if (status & READY_FOR_TX) {
868 ifp->if_flags &= ~IFF_OACTIVE;
872 if (status & TX_UNDERRUN) {
873 ifp->if_flags &= ~IFF_OACTIVE;
879 case ISQ_RX_MISS_EVENT:
880 ifp->if_ierrors+=(status>>6);
883 case ISQ_TX_COL_EVENT:
884 ifp->if_collisions+=(status>>6);
889 if (!(ifp->if_flags & IFF_OACTIVE)) {
895 * Save the data in buffer
899 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
903 unsigned char *data, *buf;
905 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
915 * Find actual data address
917 data = mtod(mp, caddr_t);
919 bcopy((caddr_t) data, (caddr_t) buf, len);
927 cs_xmit_buf( struct cs_softc *sc )
929 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
934 cs_start(struct ifnet *ifp)
938 struct cs_softc *sc = ifp->if_softc;
944 length = sc->buf_len;
946 m = ifq_dequeue(&ifp->if_snd);
953 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
956 /* Skip zero-length packets */
962 cs_write_mbufs(sc, m);
970 * Issue a SEND command
972 outw(sc->nic_addr+TX_CMD_PORT, sc->send_cmd);
973 outw(sc->nic_addr+TX_LEN_PORT, length );
976 * If there's no free space in the buffer then leave
977 * this packet for the next time: indicate output active
980 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
981 ifp->if_timer = sc->buf_len;
983 ifp->if_flags |= IFF_OACTIVE;
990 * Set the watchdog timer in case we never hear
991 * from board again. (I don't know about correct
992 * value for this timeout)
994 ifp->if_timer = length;
997 ifp->if_flags |= IFF_OACTIVE;
1003 * Stop everything on the interface
1006 cs_stop(struct cs_softc *sc)
1010 cs_writereg(sc->nic_addr, PP_RxCFG, 0);
1011 cs_writereg(sc->nic_addr, PP_TxCFG, 0);
1012 cs_writereg(sc->nic_addr, PP_BufCFG, 0);
1013 cs_writereg(sc->nic_addr, PP_BusCTL, 0);
1015 sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1016 sc->arpcom.ac_if.if_timer = 0;
1022 * Reset the interface
1025 cs_reset(struct cs_softc *sc)
1032 cs_setmode(struct cs_softc *sc)
1034 struct ifnet *ifp = &(sc->arpcom.ac_if);
1037 /* Stop the receiver while changing filters */
1038 cs_writereg(sc->nic_addr, PP_LineCTL,
1039 cs_readreg(sc->nic_addr, PP_LineCTL) & ~SERIAL_RX_ON);
1041 if (ifp->if_flags & IFF_PROMISC) {
1042 /* Turn on promiscuous mode. */
1043 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1045 if (ifp->if_flags & IFF_MULTICAST) {
1046 /* Allow receiving frames with multicast addresses */
1047 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1048 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1050 * Here the reconfiguration of chip's multicast
1051 * filters should be done but I've no idea about
1052 * hash transformation in this chip. If you can
1053 * add this code or describe me the transformation
1058 * Receive only good frames addressed for us and
1061 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1066 /* Set up the filter */
1067 cs_writereg(sc->nic_addr, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1069 /* Turn on receiver */
1070 cs_writereg(sc->nic_addr, PP_LineCTL,
1071 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_RX_ON);
1075 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data,
1078 struct cs_softc *sc=ifp->if_softc;
1079 struct ifreq *ifr = (struct ifreq *)data;
1083 printf("%s: ioctl(%lx)\n",sc->arpcom.ac_if.if_xname, command);
1092 ether_ioctl(ifp, command, data);
1097 * Switch interface state between "running" and
1098 * "stopped", reflecting the UP flag.
1100 if (sc->arpcom.ac_if.if_flags & IFF_UP) {
1101 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) {
1105 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) {
1110 * Promiscuous and/or multicast flags may have changed,
1111 * so reprogram the multicast filter and/or receive mode.
1113 * See note about multicasts in cs_setmode
1121 * Multicast list has changed; set the hardware filter
1124 * See note about multicasts in cs_setmode
1132 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1144 * Device timeout/watchdog routine. Entered if the device neglects to
1145 * generate an interrupt after a transmit has been started on it.
1148 cs_watchdog(struct ifnet *ifp)
1150 struct cs_softc *sc = ifp->if_softc;
1153 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1155 /* Reset the interface */
1156 if (ifp->if_flags & IFF_UP)
1163 cs_mediachange(struct ifnet *ifp)
1165 struct cs_softc *sc = ifp->if_softc;
1166 struct ifmedia *ifm = &sc->media;
1168 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1171 return cs_mediaset(sc, ifm->ifm_media);
1175 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1178 struct cs_softc *sc = ifp->if_softc;
1180 ifmr->ifm_active = IFM_ETHER;
1181 line_status = cs_readreg(sc->nic_addr, PP_LineST);
1182 if (line_status & TENBASET_ON) {
1183 ifmr->ifm_active |= IFM_10_T;
1184 if (sc->chip_type != CS8900) {
1185 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & FDX_ACTIVE)
1186 ifmr->ifm_active |= IFM_FDX;
1187 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & HDX_ACTIVE)
1188 ifmr->ifm_active |= IFM_HDX;
1190 ifmr->ifm_status = IFM_AVALID;
1191 if (line_status & LINK_OK)
1192 ifmr->ifm_status |= IFM_ACTIVE;
1194 if (line_status & AUI_ON) {
1195 cs_writereg(sc->nic_addr, PP_SelfCTL,
1196 cs_readreg(sc->nic_addr, PP_SelfCTL) |
1198 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1199 (cs_readreg(sc->nic_addr, PP_SelfCTL)&HCB1))
1200 ifmr->ifm_active |= IFM_10_2;
1202 ifmr->ifm_active |= IFM_10_5;
1208 cs_mediaset(struct cs_softc *sc, int media)
1212 /* Stop the receiver & transmitter */
1213 cs_writereg(sc->nic_addr, PP_LineCTL,
1214 cs_readreg(sc->nic_addr, PP_LineCTL) &
1215 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1218 printf("%s: cs_setmedia(%x)\n",sc->arpcom.ac_if.if_xname, media);
1221 switch (IFM_SUBTYPE(media)) {
1224 if ((error=enable_tp(sc))==0)
1225 error = cs_duplex_auto(sc);
1226 else if ((error=enable_bnc(sc)) != 0)
1227 error = enable_aui(sc);
1230 if ((error=enable_tp(sc)) != 0)
1232 if (media & IFM_FDX)
1234 else if (media & IFM_HDX)
1237 error = cs_duplex_auto(sc);
1240 error = enable_bnc(sc);
1243 error = enable_aui(sc);
1248 * Turn the transmitter & receiver back on
1250 cs_writereg(sc->nic_addr, PP_LineCTL,
1251 cs_readreg( sc->nic_addr, PP_LineCTL ) |
1252 SERIAL_RX_ON | SERIAL_TX_ON);