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_media.h>
61 #include <net/if_types.h>
62 #include <net/ethernet.h>
65 #include <dev/cs/if_csvar.h>
66 #include <dev/cs/if_csreg.h>
69 #define CS_DMA_BUFFER_SIZE 65536
71 #define CS_DMA_BUFFER_SIZE 16384
74 static void cs_init(void *);
75 static int cs_ioctl(struct ifnet *, u_long, caddr_t);
76 static void cs_start(struct ifnet *);
77 static void cs_stop(struct cs_softc *);
78 static void cs_reset(struct cs_softc *);
79 static void cs_watchdog(struct ifnet *);
81 static int cs_mediachange(struct ifnet *);
82 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
83 static int cs_mediaset(struct cs_softc *, int);
85 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
86 static void cs_xmit_buf(struct cs_softc*);
87 static int cs_get_packet(struct cs_softc*);
88 static void cs_setmode(struct cs_softc*);
90 static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
91 static int get_eeprom_cksum(int, int, uint16_t *);
92 static int wait_eeprom_ready( struct cs_softc *);
93 static void control_dc_dc( struct cs_softc *, int );
94 static int send_test_pkt( struct cs_softc * );
95 static int enable_tp(struct cs_softc *);
96 static int enable_aui(struct cs_softc *);
97 static int enable_bnc(struct cs_softc *);
98 static int cs_duplex_auto(struct cs_softc *);
100 devclass_t cs_devclass;
103 SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
106 TUNABLE_INT("hw.cs.debug", &cs_debug);
107 SYSCTL_INT(_hw_cs, OID_AUTO, debug, CTLFLAG_RW,
111 int cs_ignore_cksum_failure = 0;
112 TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure);
113 SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW,
114 &cs_ignore_cksum_failure, 0,
115 "ignore checksum errors in cs card EEPROM");
117 static int cs_recv_delay = 570;
118 TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay);
119 SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, "");
122 get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
127 printf(CS_NAME":EEPROM data from %x for %x:\n", off, len);
130 for (i=0; i < len; i++) {
131 if (wait_eeprom_ready(sc) < 0)
133 /* Send command to EEPROM to read */
134 cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
135 if (wait_eeprom_ready(sc) < 0)
137 buffer[i] = cs_readreg(sc, PP_EEData);
140 printf("%02x %02x ",(unsigned char)buffer[i],
141 (unsigned char)buffer[i] >> 8);
152 get_eeprom_cksum(int off, int len, uint16_t *buffer)
157 for (i = 0; i < len; i++)
162 if (cs_ignore_cksum_failure) {
163 printf(CS_NAME": checksum mismatch, ignoring\n");
170 wait_eeprom_ready(struct cs_softc *sc)
172 DELAY(30000); /* XXX should we do some checks here ? */
177 control_dc_dc(struct cs_softc *sc, int on_not_off)
179 unsigned int self_control = HCB1_ENBL;
181 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
182 self_control |= HCB1;
184 self_control &= ~HCB1;
185 cs_writereg(sc, PP_SelfCTL, self_control);
192 cs_duplex_auto(struct cs_softc *sc)
196 cs_writereg(sc, PP_AutoNegCTL,
197 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
198 for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
201 "full/half duplex auto negotiation timeout\n");
212 enable_tp(struct cs_softc *sc)
215 cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
216 control_dc_dc(sc, 0);
219 if ((cs_readreg(sc, PP_LineST) & LINK_OK)==0) {
220 if_printf(sc->ifp, "failed to enable TP\n");
228 * XXX This was rewritten from Linux driver without any tests.
231 send_test_pkt(struct cs_softc *sc)
233 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
234 0, 46, /* A 46 in network order */
235 0, 0, /* DSAP=0 & SSAP=0 fields */
236 0xf3, 0 /* Control (Test Req + P bit set) */ };
238 u_char ether_address_backup[ETHER_ADDR_LEN];
240 for (i = 0; i < ETHER_ADDR_LEN; i++)
241 ether_address_backup[i] = sc->enaddr[i];
243 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_TX_ON);
244 bcopy(test_packet, sc->enaddr, ETHER_ADDR_LEN);
245 bcopy(test_packet+ETHER_ADDR_LEN,
246 sc->enaddr, ETHER_ADDR_LEN);
247 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
248 cs_outw(sc, TX_LEN_PORT, sizeof(test_packet));
250 /* Wait for chip to allocate memory */
252 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
253 for (i = 0; i < ETHER_ADDR_LEN; i++)
254 sc->enaddr[i] = ether_address_backup[i];
258 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
262 for (i = 0; i < ETHER_ADDR_LEN; i++)
263 sc->enaddr[i] = ether_address_backup[i];
264 if ((cs_readreg(sc, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK)
270 * XXX This was rewritten from Linux driver without any tests.
273 enable_aui(struct cs_softc *sc)
276 control_dc_dc(sc, 0);
277 cs_writereg(sc, PP_LineCTL,
278 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
280 if (!send_test_pkt(sc)) {
281 if_printf(sc->ifp, "failed to enable AUI\n");
288 * XXX This was rewritten from Linux driver without any tests.
291 enable_bnc(struct cs_softc *sc)
294 control_dc_dc(sc, 1);
295 cs_writereg(sc, PP_LineCTL,
296 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
298 if (!send_test_pkt(sc)) {
299 if_printf(sc->ifp, "failed to enable BNC\n");
306 cs_cs89x0_probe(device_t dev)
311 struct cs_softc *sc = device_get_softc(dev);
312 unsigned rev_type = 0;
315 uint16_t eeprom_buff[CHKSUM_LEN];
316 int chip_type, pp_isaint, pp_isadma;
318 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
322 sc->nic_addr = rman_get_start(sc->port_res);
324 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
325 /* Chip not detected. Let's try to reset it */
327 device_printf(dev, "trying to reset the chip.\n");
328 cs_outw(sc, ADD_PORT, PP_SelfCTL);
329 i = cs_inw(sc, DATA_PORT);
330 cs_outw(sc, ADD_PORT, PP_SelfCTL);
331 cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
332 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
336 for (i = 0; i < 10000; i++) {
337 id = cs_readreg(sc, PP_ChipID);
338 if (id == CHIP_EISA_ID_SIG)
344 rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
345 chip_type = rev_type & ~REVISON_BITS;
346 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
348 sc->chip_type = chip_type;
350 if(chip_type==CS8900) {
351 pp_isaint = PP_CS8900_ISAINT;
352 pp_isadma = PP_CS8900_ISADMA;
353 sc->send_cmd = TX_CS8900_AFTER_ALL;
355 pp_isaint = PP_CS8920_ISAINT;
356 pp_isadma = PP_CS8920_ISADMA;
357 sc->send_cmd = TX_CS8920_AFTER_ALL;
361 * Clear some fields so that fail of EEPROM will left them clean
363 sc->auto_neg_cnf = 0;
368 * If no interrupt specified (or "?"), use what the board tells us.
370 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
373 * Get data from EEPROM
375 if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
376 device_printf(dev, "No EEPROM, assuming defaults.\n");
378 if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
379 device_printf(dev, "EEPROM read failed, "
380 "assuming defaults.\n");
382 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
383 device_printf(dev, "EEPROM cheksum bad, "
384 "assuming defaults.\n");
387 eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
389 eeprom_buff[ADAPTER_CNF_OFFSET/2];
391 eeprom_buff[ISA_CNF_OFFSET/2];
393 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
401 * If no interrupt specified,
402 * use what the board tells us.
405 irq = sc->isa_config & INT_NO_MASK;
407 if (chip_type==CS8900) {
422 device_printf(dev, "invalid irq in EEPROM.\n");
426 if (irq>CS8920_NO_INTS) {
427 device_printf(dev, "invalid irq in EEPROM.\n");
432 bus_set_resource(dev, SYS_RES_IRQ, 0,
440 if (chip_type == CS8900) {
458 if (irq > CS8920_NO_INTS) {
465 if (!(sc->flags & CS_NO_IRQ))
466 cs_writereg(sc, pp_isaint, irq);
468 device_printf(dev, "Unknown or invalid irq\n");
476 cs_writereg(sc, pp_isadma, drq);
478 device_printf(dev, "incorrect drq\n",);
484 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
485 chip_type==CS8900 ? '0' : '2',
486 chip_type==CS8920M ? "M" : "",
488 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
489 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
490 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
492 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
493 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
494 sc->line_ctl = LOW_RX_SQUELCH;
502 * Allocate a port resource with the given resource id.
504 int cs_alloc_port(device_t dev, int rid, int size)
506 struct cs_softc *sc = device_get_softc(dev);
507 struct resource *res;
509 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
510 0ul, ~0ul, size, RF_ACTIVE);
515 sc->port_used = size;
520 * Allocate a memory resource with the given resource id.
522 int cs_alloc_memory(device_t dev, int rid, int size)
524 struct cs_softc *sc = device_get_softc(dev);
525 struct resource *res;
527 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
528 0ul, ~0ul, size, RF_ACTIVE);
538 * Allocate an irq resource with the given resource id.
540 int cs_alloc_irq(device_t dev, int rid, int flags)
542 struct cs_softc *sc = device_get_softc(dev);
543 struct resource *res;
545 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
546 (RF_ACTIVE | flags));
555 * Release all resources
557 void cs_release_resources(device_t dev)
559 struct cs_softc *sc = device_get_softc(dev);
562 bus_release_resource(dev, SYS_RES_IOPORT,
563 sc->port_rid, sc->port_res);
567 bus_release_resource(dev, SYS_RES_MEMORY,
568 sc->mem_rid, sc->mem_res);
572 bus_release_resource(dev, SYS_RES_IRQ,
573 sc->irq_rid, sc->irq_res);
579 * Install the interface into kernel networking data structures
582 cs_attach(device_t dev)
585 struct cs_softc *sc = device_get_softc(dev);;
588 ifp = sc->ifp = if_alloc(IFT_ETHER);
590 device_printf(dev, "can not if_alloc()\n");
597 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
598 ifp->if_start=cs_start;
599 ifp->if_ioctl=cs_ioctl;
600 ifp->if_watchdog=cs_watchdog;
601 ifp->if_init=cs_init;
602 ifp->if_snd.ifq_maxlen= IFQ_MAXLEN;
607 ifp->if_linkmib=&sc->mibdata;
608 ifp->if_linkmiblen=sizeof sc->mibdata;
611 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
615 * this code still in progress (DMA support)
618 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT);
619 if (sc->recv_ring == NULL) {
621 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
624 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
625 < (128*1024-CS_DMA_BUFFER_SIZE))
626 sc->recv_ring+=16*1024;
630 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT);
631 if (sc->buffer == NULL) {
632 if_printf(ifp, "Couldn't allocate memory for NIC\n");
637 * Initialize the media structures.
639 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
641 if (sc->adapter_cnf & A_CNF_10B_T) {
642 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
643 if (sc->chip_type != CS8900) {
644 ifmedia_add(&sc->media,
645 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
646 ifmedia_add(&sc->media,
647 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
651 if (sc->adapter_cnf & A_CNF_10B_2)
652 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
654 if (sc->adapter_cnf & A_CNF_AUI)
655 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
657 if (sc->adapter_cnf & A_CNF_MEDIA)
658 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
660 /* Set default media from EEPROM */
661 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
662 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
663 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
664 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
665 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
667 if_printf(ifp, "no media, assuming 10baseT\n");
668 sc->adapter_cnf |= A_CNF_10B_T;
669 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
670 if (sc->chip_type != CS8900) {
671 ifmedia_add(&sc->media,
672 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
673 ifmedia_add(&sc->media,
674 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
676 media = IFM_ETHER | IFM_10_T;
679 ifmedia_set(&sc->media, media);
680 cs_mediaset(sc, media);
682 ether_ifattach(ifp, sc->enaddr);
688 cs_detach(device_t dev)
693 sc = device_get_softc(dev);
697 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
699 cs_release_resources(dev);
705 * Initialize the board
710 struct cs_softc *sc=(struct cs_softc *)xsc;
711 struct ifnet *ifp = sc->ifp;
715 * reset whatchdog timer
723 * Hardware initialization of cs
726 /* Enable receiver and transmitter */
727 cs_writereg(sc, PP_LineCTL,
728 cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
730 /* Configure the receiver mode */
734 * This defines what type of frames will cause interrupts
735 * Bad frames should generate interrupts so that the driver
736 * could track statistics of discarded packets
738 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
740 if (sc->isa_config & STREAM_TRANSFER)
741 rx_cfg |= RX_STREAM_ENBL;
742 cs_writereg(sc, PP_RxCFG, rx_cfg);
743 cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL |
744 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
745 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
746 cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL |
747 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
748 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
750 /* Write MAC address into IA filter */
751 for (i=0; i<ETHER_ADDR_LEN/2; i++)
752 cs_writereg(sc, PP_IA + i * 2,
754 (sc->enaddr[i * 2 + 1] << 8) );
757 * Now enable everything
760 #ifdef CS_USE_64K_DMA
761 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
763 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
766 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
769 * Set running and clear output active flags
771 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
772 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
775 * Start sending process
783 * Get the packet from the board and send it to the upper layer.
786 cs_get_packet(struct cs_softc *sc)
788 struct ifnet *ifp = sc->ifp;
789 int iobase = sc->nic_addr, status, length;
790 struct ether_header *eh;
797 status = cs_inw(sc, RX_FRAME_PORT);
798 length = cs_inw(sc, RX_FRAME_PORT);
801 if_printf(ifp, "rcvd: stat %x, len %d\n",
805 if (!(status & RX_OK)) {
807 if_printf(ifp, "bad pkt stat %x\n", status);
813 MGETHDR(m, M_DONTWAIT, MT_DATA);
817 if (length > MHLEN) {
818 MCLGET(m, M_DONTWAIT);
819 if (!(m->m_flags & M_EXT)) {
825 /* Initialize packet's header info */
826 m->m_pkthdr.rcvif = ifp;
827 m->m_pkthdr.len = length;
831 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
833 eh = mtod(m, struct ether_header *);
836 for (i=0;i<length;i++)
837 printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
841 if (status & (RX_IA | RX_BROADCAST) ||
842 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
843 /* Feed the packet to the upper layer */
844 (*ifp->if_input)(ifp, m);
846 if (length == ETHER_MAX_LEN-ETHER_CRC_LEN)
847 DELAY(cs_recv_delay);
861 struct cs_softc *sc = (struct cs_softc*) arg;
862 struct ifnet *ifp = sc->ifp;
866 if_printf(ifp, "Interrupt.\n");
869 while ((status=cs_inw(sc, ISQ_PORT))) {
872 if_printf(ifp, "from ISQ: %04x\n", status);
875 switch (status & ISQ_EVENT_MASK) {
876 case ISQ_RECEIVER_EVENT:
880 case ISQ_TRANSMITTER_EVENT:
885 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
889 case ISQ_BUFFER_EVENT:
890 if (status & READY_FOR_TX) {
891 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
895 if (status & TX_UNDERRUN) {
896 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
902 case ISQ_RX_MISS_EVENT:
903 ifp->if_ierrors+=(status>>6);
906 case ISQ_TX_COL_EVENT:
907 ifp->if_collisions+=(status>>6);
912 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
918 * Save the data in buffer
922 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
926 unsigned char *data, *buf;
928 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
938 * Find actual data address
940 data = mtod(mp, caddr_t);
942 bcopy((caddr_t) data, (caddr_t) buf, len);
950 cs_xmit_buf( struct cs_softc *sc )
952 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
957 cs_start(struct ifnet *ifp)
961 struct cs_softc *sc = ifp->if_softc;
967 length = sc->buf_len;
969 IF_DEQUEUE( &ifp->if_snd, m );
976 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
979 /* Skip zero-length packets */
985 cs_write_mbufs(sc, m);
993 * Issue a SEND command
995 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
996 cs_outw(sc, TX_LEN_PORT, length );
999 * If there's no free space in the buffer then leave
1000 * this packet for the next time: indicate output active
1003 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
1004 ifp->if_timer = sc->buf_len;
1006 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1013 * Set the watchdog timer in case we never hear
1014 * from board again. (I don't know about correct
1015 * value for this timeout)
1017 ifp->if_timer = length;
1020 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1026 * Stop everything on the interface
1029 cs_stop(struct cs_softc *sc)
1033 cs_writereg(sc, PP_RxCFG, 0);
1034 cs_writereg(sc, PP_TxCFG, 0);
1035 cs_writereg(sc, PP_BufCFG, 0);
1036 cs_writereg(sc, PP_BusCTL, 0);
1038 sc->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1039 sc->ifp->if_timer = 0;
1045 * Reset the interface
1048 cs_reset(struct cs_softc *sc)
1055 cs_setmode(struct cs_softc *sc)
1057 struct ifnet *ifp = sc->ifp;
1060 /* Stop the receiver while changing filters */
1061 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
1063 if (ifp->if_flags & IFF_PROMISC) {
1064 /* Turn on promiscuous mode. */
1065 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1067 if (ifp->if_flags & IFF_MULTICAST) {
1068 /* Allow receiving frames with multicast addresses */
1069 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1070 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1072 * Here the reconfiguration of chip's multicast
1073 * filters should be done but I've no idea about
1074 * hash transformation in this chip. If you can
1075 * add this code or describe me the transformation
1080 * Receive only good frames addressed for us and
1083 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1088 /* Set up the filter */
1089 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1091 /* Turn on receiver */
1092 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1096 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data)
1098 struct cs_softc *sc=ifp->if_softc;
1099 struct ifreq *ifr = (struct ifreq *)data;
1103 if_printf(ifp, "ioctl(%lx)\n", command);
1111 * Switch interface state between "running" and
1112 * "stopped", reflecting the UP flag.
1114 if (sc->ifp->if_flags & IFF_UP) {
1115 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)==0) {
1119 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)!=0) {
1124 * Promiscuous and/or multicast flags may have changed,
1125 * so reprogram the multicast filter and/or receive mode.
1127 * See note about multicasts in cs_setmode
1135 * Multicast list has changed; set the hardware filter
1138 * See note about multicasts in cs_setmode
1146 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1150 error = ether_ioctl(ifp, command, data);
1159 * Device timeout/watchdog routine. Entered if the device neglects to
1160 * generate an interrupt after a transmit has been started on it.
1163 cs_watchdog(struct ifnet *ifp)
1165 struct cs_softc *sc = ifp->if_softc;
1168 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1170 /* Reset the interface */
1171 if (ifp->if_flags & IFF_UP)
1178 cs_mediachange(struct ifnet *ifp)
1180 struct cs_softc *sc = ifp->if_softc;
1181 struct ifmedia *ifm = &sc->media;
1183 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1186 return (cs_mediaset(sc, ifm->ifm_media));
1190 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1193 struct cs_softc *sc = ifp->if_softc;
1195 ifmr->ifm_active = IFM_ETHER;
1196 line_status = cs_readreg(sc, PP_LineST);
1197 if (line_status & TENBASET_ON) {
1198 ifmr->ifm_active |= IFM_10_T;
1199 if (sc->chip_type != CS8900) {
1200 if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE)
1201 ifmr->ifm_active |= IFM_FDX;
1202 if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE)
1203 ifmr->ifm_active |= IFM_HDX;
1205 ifmr->ifm_status = IFM_AVALID;
1206 if (line_status & LINK_OK)
1207 ifmr->ifm_status |= IFM_ACTIVE;
1209 if (line_status & AUI_ON) {
1210 cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) |
1212 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1213 (cs_readreg(sc, PP_SelfCTL) & HCB1))
1214 ifmr->ifm_active |= IFM_10_2;
1216 ifmr->ifm_active |= IFM_10_5;
1222 cs_mediaset(struct cs_softc *sc, int media)
1226 /* Stop the receiver & transmitter */
1227 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
1228 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1231 if_printf(sc->ifp, "cs_setmedia(%x)\n", media);
1234 switch (IFM_SUBTYPE(media)) {
1237 if ((error=enable_tp(sc))==0)
1238 error = cs_duplex_auto(sc);
1239 else if ((error=enable_bnc(sc)) != 0)
1240 error = enable_aui(sc);
1243 if ((error=enable_tp(sc)) != 0)
1245 if (media & IFM_FDX)
1247 else if (media & IFM_HDX)
1250 error = cs_duplex_auto(sc);
1253 error = enable_bnc(sc);
1256 error = enable_aui(sc);
1261 * Turn the transmitter & receiver back on
1263 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) |
1264 SERIAL_RX_ON | SERIAL_TX_ON);