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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
34 * Device driver for Crystal Semiconductor CS8920 based ethernet
35 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/malloc.h>
46 #include <sys/socket.h>
47 #include <sys/sockio.h>
48 #include <sys/kernel.h>
49 #include <sys/sysctl.h>
50 #include <sys/syslog.h>
52 #include <sys/module.h>
54 #include <machine/bus.h>
56 #include <machine/resource.h>
59 #include <net/if_arp.h>
60 #include <net/if_dl.h>
61 #include <net/if_media.h>
62 #include <net/if_types.h>
63 #include <net/ethernet.h>
66 #include <dev/cs/if_csvar.h>
67 #include <dev/cs/if_csreg.h>
70 #define CS_DMA_BUFFER_SIZE 65536
72 #define CS_DMA_BUFFER_SIZE 16384
75 static void cs_init(void *);
76 static int cs_ioctl(struct ifnet *, u_long, caddr_t);
77 static void cs_start(struct ifnet *);
78 static void cs_stop(struct cs_softc *);
79 static void cs_reset(struct cs_softc *);
80 static void cs_watchdog(struct ifnet *);
82 static int cs_mediachange(struct ifnet *);
83 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
84 static int cs_mediaset(struct cs_softc *, int);
86 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
87 static void cs_xmit_buf(struct cs_softc*);
88 static int cs_get_packet(struct cs_softc*);
89 static void cs_setmode(struct cs_softc*);
91 static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
92 static int get_eeprom_cksum(int, int, uint16_t *);
93 static int wait_eeprom_ready( struct cs_softc *);
94 static void control_dc_dc( struct cs_softc *, int );
95 static int send_test_pkt( struct cs_softc * );
96 static int enable_tp(struct cs_softc *);
97 static int enable_aui(struct cs_softc *);
98 static int enable_bnc(struct cs_softc *);
99 static int cs_duplex_auto(struct cs_softc *);
101 devclass_t cs_devclass;
104 SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
107 TUNABLE_INT("hw.cs.debug", &cs_debug);
108 SYSCTL_INT(_hw_cs, OID_AUTO, debug, CTLFLAG_RW,
112 int cs_ignore_cksum_failure = 0;
113 TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure);
114 SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW,
115 &cs_ignore_cksum_failure, 0,
116 "ignore checksum errors in cs card EEPROM");
118 static int cs_recv_delay = 570;
119 TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay);
120 SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, "");
123 get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
128 printf(CS_NAME":EEPROM data from %x for %x:\n", off, len);
131 for (i=0; i < len; i++) {
132 if (wait_eeprom_ready(sc) < 0)
134 /* Send command to EEPROM to read */
135 cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
136 if (wait_eeprom_ready(sc) < 0)
138 buffer[i] = cs_readreg(sc, PP_EEData);
141 printf("%02x %02x ",(unsigned char)buffer[i],
142 (unsigned char)buffer[i] >> 8);
153 get_eeprom_cksum(int off, int len, uint16_t *buffer)
158 for (i = 0; i < len; i++)
163 if (cs_ignore_cksum_failure) {
164 printf(CS_NAME": checksum mismatch, ignoring\n");
171 wait_eeprom_ready(struct cs_softc *sc)
173 DELAY(30000); /* XXX should we do some checks here ? */
178 control_dc_dc(struct cs_softc *sc, int on_not_off)
180 unsigned int self_control = HCB1_ENBL;
182 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
183 self_control |= HCB1;
185 self_control &= ~HCB1;
186 cs_writereg(sc, PP_SelfCTL, self_control);
193 cs_duplex_auto(struct cs_softc *sc)
197 cs_writereg(sc, PP_AutoNegCTL,
198 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
199 for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
201 device_printf(sc->dev,
202 "full/half duplex auto negotiation timeout\n");
213 enable_tp(struct cs_softc *sc)
216 cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
217 control_dc_dc(sc, 0);
220 if ((cs_readreg(sc, PP_LineST) & LINK_OK)==0) {
221 device_printf(sc->dev, "failed to enable TP\n");
229 * XXX This was rewritten from Linux driver without any tests.
232 send_test_pkt(struct cs_softc *sc)
234 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
235 0, 46, /* A 46 in network order */
236 0, 0, /* DSAP=0 & SSAP=0 fields */
237 0xf3, 0 /* Control (Test Req + P bit set) */ };
239 u_char ether_address_backup[ETHER_ADDR_LEN];
241 for (i = 0; i < ETHER_ADDR_LEN; i++)
242 ether_address_backup[i] = sc->enaddr[i];
244 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_TX_ON);
245 bcopy(test_packet, sc->enaddr, ETHER_ADDR_LEN);
246 bcopy(test_packet+ETHER_ADDR_LEN,
247 sc->enaddr, ETHER_ADDR_LEN);
248 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
249 cs_outw(sc, TX_LEN_PORT, sizeof(test_packet));
251 /* Wait for chip to allocate memory */
253 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
254 for (i = 0; i < ETHER_ADDR_LEN; i++)
255 sc->enaddr[i] = ether_address_backup[i];
259 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
263 for (i = 0; i < ETHER_ADDR_LEN; i++)
264 sc->enaddr[i] = ether_address_backup[i];
265 if ((cs_readreg(sc, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK)
271 * XXX This was rewritten from Linux driver without any tests.
274 enable_aui(struct cs_softc *sc)
277 control_dc_dc(sc, 0);
278 cs_writereg(sc, PP_LineCTL,
279 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
281 if (!send_test_pkt(sc)) {
282 device_printf(sc->dev, "failed to enable AUI\n");
289 * XXX This was rewritten from Linux driver without any tests.
292 enable_bnc(struct cs_softc *sc)
295 control_dc_dc(sc, 1);
296 cs_writereg(sc, PP_LineCTL,
297 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
299 if (!send_test_pkt(sc)) {
300 device_printf(sc->dev, "failed to enable BNC\n");
307 cs_cs89x0_probe(device_t dev)
312 struct cs_softc *sc = device_get_softc(dev);
313 unsigned rev_type = 0;
316 uint16_t eeprom_buff[CHKSUM_LEN];
317 int chip_type, pp_isaint, pp_isadma;
319 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
323 sc->nic_addr = rman_get_start(sc->port_res);
325 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
326 /* Chip not detected. Let's try to reset it */
328 device_printf(dev, "trying to reset the chip.\n");
329 cs_outw(sc, ADD_PORT, PP_SelfCTL);
330 i = cs_inw(sc, DATA_PORT);
331 cs_outw(sc, ADD_PORT, PP_SelfCTL);
332 cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
333 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
337 for (i = 0; i < 10000; i++) {
338 id = cs_readreg(sc, PP_ChipID);
339 if (id == CHIP_EISA_ID_SIG)
345 rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
346 chip_type = rev_type & ~REVISON_BITS;
347 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
349 sc->chip_type = chip_type;
351 if(chip_type==CS8900) {
352 pp_isaint = PP_CS8900_ISAINT;
353 pp_isadma = PP_CS8900_ISADMA;
354 sc->send_cmd = TX_CS8900_AFTER_ALL;
356 pp_isaint = PP_CS8920_ISAINT;
357 pp_isadma = PP_CS8920_ISADMA;
358 sc->send_cmd = TX_CS8920_AFTER_ALL;
362 * Clear some fields so that fail of EEPROM will left them clean
364 sc->auto_neg_cnf = 0;
369 * If no interrupt specified (or "?"), use what the board tells us.
371 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
374 * Get data from EEPROM
376 if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
377 device_printf(dev, "No EEPROM, assuming defaults.\n");
379 if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
380 device_printf(dev, "EEPROM read failed, "
381 "assuming defaults.\n");
383 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
384 device_printf(dev, "EEPROM cheksum bad, "
385 "assuming defaults.\n");
388 eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
390 eeprom_buff[ADAPTER_CNF_OFFSET/2];
392 eeprom_buff[ISA_CNF_OFFSET/2];
394 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
402 * If no interrupt specified,
403 * use what the board tells us.
406 irq = sc->isa_config & INT_NO_MASK;
408 if (chip_type==CS8900) {
423 device_printf(dev, "invalid irq in EEPROM.\n");
427 if (irq>CS8920_NO_INTS) {
428 device_printf(dev, "invalid irq in EEPROM.\n");
433 bus_set_resource(dev, SYS_RES_IRQ, 0,
441 if (chip_type == CS8900) {
459 if (irq > CS8920_NO_INTS) {
466 if (!(sc->flags & CS_NO_IRQ))
467 cs_writereg(sc, pp_isaint, irq);
469 device_printf(dev, "Unknown or invalid irq\n");
477 cs_writereg(sc, pp_isadma, drq);
479 device_printf(dev, "incorrect drq\n",);
485 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
486 chip_type==CS8900 ? '0' : '2',
487 chip_type==CS8920M ? "M" : "",
489 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
490 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
491 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
493 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
494 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
495 sc->line_ctl = LOW_RX_SQUELCH;
503 * Allocate a port resource with the given resource id.
505 int cs_alloc_port(device_t dev, int rid, int size)
507 struct cs_softc *sc = device_get_softc(dev);
508 struct resource *res;
510 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
511 0ul, ~0ul, size, RF_ACTIVE);
516 sc->port_used = size;
521 * Allocate a memory resource with the given resource id.
523 int cs_alloc_memory(device_t dev, int rid, int size)
525 struct cs_softc *sc = device_get_softc(dev);
526 struct resource *res;
528 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
529 0ul, ~0ul, size, RF_ACTIVE);
539 * Allocate an irq resource with the given resource id.
541 int cs_alloc_irq(device_t dev, int rid, int flags)
543 struct cs_softc *sc = device_get_softc(dev);
544 struct resource *res;
546 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
547 (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)
586 struct cs_softc *sc = device_get_softc(dev);;
591 ifp = sc->ifp = if_alloc(IFT_ETHER);
593 device_printf(dev, "can not if_alloc()\n");
600 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
601 ifp->if_start=cs_start;
602 ifp->if_ioctl=cs_ioctl;
603 ifp->if_watchdog=cs_watchdog;
604 ifp->if_init=cs_init;
605 ifp->if_snd.ifq_maxlen= IFQ_MAXLEN;
610 ifp->if_linkmib=&sc->mibdata;
611 ifp->if_linkmiblen=sizeof sc->mibdata;
614 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
618 * this code still in progress (DMA support)
621 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT);
622 if (sc->recv_ring == NULL) {
624 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
627 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
628 < (128*1024-CS_DMA_BUFFER_SIZE))
629 sc->recv_ring+=16*1024;
633 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT);
634 if (sc->buffer == NULL) {
635 device_printf(sc->dev, "Couldn't allocate memory for NIC\n");
640 * Initialize the media structures.
642 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
644 if (sc->adapter_cnf & A_CNF_10B_T) {
645 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
646 if (sc->chip_type != CS8900) {
647 ifmedia_add(&sc->media,
648 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
649 ifmedia_add(&sc->media,
650 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
654 if (sc->adapter_cnf & A_CNF_10B_2)
655 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
657 if (sc->adapter_cnf & A_CNF_AUI)
658 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
660 if (sc->adapter_cnf & A_CNF_MEDIA)
661 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
663 /* Set default media from EEPROM */
664 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
665 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
666 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
667 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
668 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
670 device_printf(sc->dev, "no media, assuming 10baseT\n");
671 sc->adapter_cnf |= A_CNF_10B_T;
672 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
673 if (sc->chip_type != CS8900) {
674 ifmedia_add(&sc->media,
675 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
676 ifmedia_add(&sc->media,
677 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
679 media = IFM_ETHER | IFM_10_T;
682 ifmedia_set(&sc->media, media);
683 cs_mediaset(sc, media);
685 ether_ifattach(ifp, sc->enaddr);
691 cs_detach(device_t dev)
696 sc = device_get_softc(dev);
700 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
702 cs_release_resources(dev);
708 * Initialize the board
713 struct cs_softc *sc=(struct cs_softc *)xsc;
714 struct ifnet *ifp = sc->ifp;
718 * reset whatchdog timer
726 * Hardware initialization of cs
729 /* Enable receiver and transmitter */
730 cs_writereg(sc, PP_LineCTL,
731 cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
733 /* Configure the receiver mode */
737 * This defines what type of frames will cause interrupts
738 * Bad frames should generate interrupts so that the driver
739 * could track statistics of discarded packets
741 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
743 if (sc->isa_config & STREAM_TRANSFER)
744 rx_cfg |= RX_STREAM_ENBL;
745 cs_writereg(sc, PP_RxCFG, rx_cfg);
746 cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL |
747 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
748 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
749 cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL |
750 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
751 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
753 /* Write MAC address into IA filter */
754 for (i=0; i<ETHER_ADDR_LEN/2; i++)
755 cs_writereg(sc, PP_IA + i * 2,
757 (sc->enaddr[i * 2 + 1] << 8) );
760 * Now enable everything
763 #ifdef CS_USE_64K_DMA
764 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
766 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
769 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
772 * Set running and clear output active flags
774 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
775 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
778 * Start sending process
786 * Get the packet from the board and send it to the upper layer.
789 cs_get_packet(struct cs_softc *sc)
791 struct ifnet *ifp = sc->ifp;
792 int iobase = sc->nic_addr, status, length;
793 struct ether_header *eh;
800 status = cs_inw(sc, RX_FRAME_PORT);
801 length = cs_inw(sc, RX_FRAME_PORT);
804 device_printf(sc->dev, "rcvd: stat %x, len %d\n",
808 if (!(status & RX_OK)) {
810 device_printf(sc->dev, "bad pkt stat %x\n", status);
816 MGETHDR(m, M_DONTWAIT, MT_DATA);
820 if (length > MHLEN) {
821 MCLGET(m, M_DONTWAIT);
822 if (!(m->m_flags & M_EXT)) {
828 /* Initialize packet's header info */
829 m->m_pkthdr.rcvif = ifp;
830 m->m_pkthdr.len = length;
834 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
836 eh = mtod(m, struct ether_header *);
839 for (i=0;i<length;i++)
840 printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
844 if (status & (RX_IA | RX_BROADCAST) ||
845 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
846 /* Feed the packet to the upper layer */
847 (*ifp->if_input)(ifp, m);
849 if (length == ETHER_MAX_LEN-ETHER_CRC_LEN)
850 DELAY(cs_recv_delay);
864 struct cs_softc *sc = (struct cs_softc*) arg;
865 struct ifnet *ifp = sc->ifp;
869 device_printf(sc->dev, "Interrupt.\n");
872 while ((status=cs_inw(sc, ISQ_PORT))) {
875 device_printf(sc->dev, "from ISQ: %04x\n", status);
878 switch (status & ISQ_EVENT_MASK) {
879 case ISQ_RECEIVER_EVENT:
883 case ISQ_TRANSMITTER_EVENT:
888 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
892 case ISQ_BUFFER_EVENT:
893 if (status & READY_FOR_TX) {
894 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
898 if (status & TX_UNDERRUN) {
899 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
905 case ISQ_RX_MISS_EVENT:
906 ifp->if_ierrors+=(status>>6);
909 case ISQ_TX_COL_EVENT:
910 ifp->if_collisions+=(status>>6);
915 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
921 * Save the data in buffer
925 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
929 unsigned char *data, *buf;
931 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
941 * Find actual data address
943 data = mtod(mp, caddr_t);
945 bcopy((caddr_t) data, (caddr_t) buf, len);
953 cs_xmit_buf( struct cs_softc *sc )
955 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
960 cs_start(struct ifnet *ifp)
964 struct cs_softc *sc = ifp->if_softc;
970 length = sc->buf_len;
972 IF_DEQUEUE( &ifp->if_snd, m );
979 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
982 /* Skip zero-length packets */
988 cs_write_mbufs(sc, m);
996 * Issue a SEND command
998 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
999 cs_outw(sc, TX_LEN_PORT, length );
1002 * If there's no free space in the buffer then leave
1003 * this packet for the next time: indicate output active
1006 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
1007 ifp->if_timer = sc->buf_len;
1009 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1016 * Set the watchdog timer in case we never hear
1017 * from board again. (I don't know about correct
1018 * value for this timeout)
1020 ifp->if_timer = length;
1023 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1029 * Stop everything on the interface
1032 cs_stop(struct cs_softc *sc)
1036 cs_writereg(sc, PP_RxCFG, 0);
1037 cs_writereg(sc, PP_TxCFG, 0);
1038 cs_writereg(sc, PP_BufCFG, 0);
1039 cs_writereg(sc, PP_BusCTL, 0);
1041 sc->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1042 sc->ifp->if_timer = 0;
1048 * Reset the interface
1051 cs_reset(struct cs_softc *sc)
1058 cs_hash_index(struct sockaddr_dl *addr)
1065 crc = ether_crc32_le(lla, ETHER_ADDR_LEN);
1072 cs_setmode(struct cs_softc *sc)
1076 uint16_t port, mask, index;
1077 struct ifnet *ifp = sc->ifp;
1078 struct ifmultiaddr *ifma;
1080 /* Stop the receiver while changing filters */
1081 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
1083 if (ifp->if_flags & IFF_PROMISC) {
1084 /* Turn on promiscuous mode. */
1085 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1086 } else if (ifp->if_flags & IFF_MULTICAST) {
1087 /* Allow receiving frames with multicast addresses */
1088 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1089 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1091 /* Start with an empty filter */
1092 af[0] = af[1] = af[2] = af[3] = 0x0000;
1094 if (ifp->if_flags & IFF_ALLMULTI) {
1095 /* Accept all multicast frames */
1096 af[0] = af[1] = af[2] = af[3] = 0xffff;
1099 * Set up the filter to only accept multicast
1100 * frames we're interested in.
1103 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1104 struct sockaddr_dl *dl =
1105 (struct sockaddr_dl *)ifma->ifma_addr;
1107 index = cs_hash_index(dl);
1108 port = (u_int16_t) (index >> 4);
1109 mask = (u_int16_t) (1 << (index & 0xf));
1112 IF_ADDR_UNLOCK(ifp);
1115 cs_writereg(sc, PP_LAF + 0, af[0]);
1116 cs_writereg(sc, PP_LAF + 2, af[1]);
1117 cs_writereg(sc, PP_LAF + 4, af[2]);
1118 cs_writereg(sc, PP_LAF + 6, af[3]);
1121 * Receive only good frames addressed for us and
1124 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1128 /* Set up the filter */
1129 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1131 /* Turn on receiver */
1132 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1136 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data)
1138 struct cs_softc *sc=ifp->if_softc;
1139 struct ifreq *ifr = (struct ifreq *)data;
1143 if_printf(ifp, "%s command=%lx\n", __func__, command);
1151 * Switch interface state between "running" and
1152 * "stopped", reflecting the UP flag.
1154 if (sc->ifp->if_flags & IFF_UP) {
1155 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)==0) {
1159 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)!=0) {
1164 * Promiscuous and/or multicast flags may have changed,
1165 * so reprogram the multicast filter and/or receive mode.
1167 * See note about multicasts in cs_setmode
1175 * Multicast list has changed; set the hardware filter
1178 * See note about multicasts in cs_setmode
1186 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1190 error = ether_ioctl(ifp, command, data);
1199 * Device timeout/watchdog routine. Entered if the device neglects to
1200 * generate an interrupt after a transmit has been started on it.
1203 cs_watchdog(struct ifnet *ifp)
1205 struct cs_softc *sc = ifp->if_softc;
1208 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1210 /* Reset the interface */
1211 if (ifp->if_flags & IFF_UP)
1218 cs_mediachange(struct ifnet *ifp)
1220 struct cs_softc *sc = ifp->if_softc;
1221 struct ifmedia *ifm = &sc->media;
1223 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1226 return (cs_mediaset(sc, ifm->ifm_media));
1230 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1233 struct cs_softc *sc = ifp->if_softc;
1235 ifmr->ifm_active = IFM_ETHER;
1236 line_status = cs_readreg(sc, PP_LineST);
1237 if (line_status & TENBASET_ON) {
1238 ifmr->ifm_active |= IFM_10_T;
1239 if (sc->chip_type != CS8900) {
1240 if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE)
1241 ifmr->ifm_active |= IFM_FDX;
1242 if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE)
1243 ifmr->ifm_active |= IFM_HDX;
1245 ifmr->ifm_status = IFM_AVALID;
1246 if (line_status & LINK_OK)
1247 ifmr->ifm_status |= IFM_ACTIVE;
1249 if (line_status & AUI_ON) {
1250 cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) |
1252 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1253 (cs_readreg(sc, PP_SelfCTL) & HCB1))
1254 ifmr->ifm_active |= IFM_10_2;
1256 ifmr->ifm_active |= IFM_10_5;
1262 cs_mediaset(struct cs_softc *sc, int media)
1266 /* Stop the receiver & transmitter */
1267 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
1268 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1271 device_printf(sc->dev, "%s media=%x\n", __func__, media);
1274 switch (IFM_SUBTYPE(media)) {
1277 if ((error=enable_tp(sc))==0)
1278 error = cs_duplex_auto(sc);
1279 else if ((error=enable_bnc(sc)) != 0)
1280 error = enable_aui(sc);
1283 if ((error=enable_tp(sc)) != 0)
1285 if (media & IFM_FDX)
1287 else if (media & IFM_HDX)
1290 error = cs_duplex_auto(sc);
1293 error = enable_bnc(sc);
1296 error = enable_aui(sc);
1301 * Turn the transmitter & receiver back on
1303 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) |
1304 SERIAL_RX_ON | SERIAL_TX_ON);