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 void cs_init_locked(struct cs_softc *);
77 static int cs_ioctl(struct ifnet *, u_long, caddr_t);
78 static void cs_start(struct ifnet *);
79 static void cs_start_locked(struct ifnet *);
80 static void cs_stop(struct cs_softc *);
81 static void cs_reset(struct cs_softc *);
82 static void cs_watchdog(void *);
84 static int cs_mediachange(struct ifnet *);
85 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
86 static int cs_mediaset(struct cs_softc *, int);
88 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
89 static void cs_xmit_buf(struct cs_softc*);
90 static int cs_get_packet(struct cs_softc*);
91 static void cs_setmode(struct cs_softc*);
93 static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
94 static int get_eeprom_cksum(int, int, uint16_t *);
95 static int wait_eeprom_ready( struct cs_softc *);
96 static void control_dc_dc( struct cs_softc *, int );
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;
103 driver_intr_t csintr;
106 static SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
108 int cs_ignore_cksum_failure = 0;
109 TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure);
110 SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW,
111 &cs_ignore_cksum_failure, 0,
112 "ignore checksum errors in cs card EEPROM");
114 static int cs_recv_delay = 570;
115 TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay);
116 SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, "");
118 static int cs8900_eeint2irq[16] = {
119 10, 11, 12, 5, 255, 255, 255, 255,
120 255, 255, 255, 255, 255, 255, 255, 255
123 static int cs8900_irq2eeint[16] = {
124 255, 255, 255, 255, 255, 3, 255, 255,
125 255, 0, 1, 2, 255, 255, 255, 255
129 get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
134 device_printf(sc->dev, "EEPROM data from %x for %x:\n", off, len);
136 for (i=0; i < len; i++) {
137 if (wait_eeprom_ready(sc) < 0)
139 /* Send command to EEPROM to read */
140 cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
141 if (wait_eeprom_ready(sc) < 0)
143 buffer[i] = cs_readreg(sc, PP_EEData);
146 printf("%04x ",buffer[i]);
157 get_eeprom_cksum(int off, int len, uint16_t *buffer)
162 for (i = 0; i < len; i++)
165 if (cksum == 0 || cs_ignore_cksum_failure)
171 wait_eeprom_ready(struct cs_softc *sc)
176 * From the CS8900A datasheet, section 3.5.2:
177 * "Before issuing any command to the EEPROM, the host must wait
178 * for the SIBUSY bit (Register 16, SelfST, bit 8) to clear. After
179 * each command has been issued, the host must wait again for SIBUSY
182 * Before we issue the command, we should be !busy, so that will
183 * be fast. The datasheet suggests that clock out from the part
184 * per word will be on the order of 25us, which is consistant with
185 * the 1MHz serial clock and 16bits... We should never hit 100,
186 * let alone 15,000 here. The original code did an unconditional
187 * 30ms DELAY here. Bad Kharma. cs_readreg takes ~2us.
189 for (i = 0; i < 15000; i++) /* 30ms max */
190 if (!(cs_readreg(sc, PP_SelfST) & SI_BUSY))
196 control_dc_dc(struct cs_softc *sc, int on_not_off)
198 unsigned int self_control = HCB1_ENBL;
200 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
201 self_control |= HCB1;
203 self_control &= ~HCB1;
204 cs_writereg(sc, PP_SelfCTL, self_control);
205 DELAY(500000); /* Bad! */
210 cs_duplex_auto(struct cs_softc *sc)
214 cs_writereg(sc, PP_AutoNegCTL,
215 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
216 for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
218 device_printf(sc->dev,
219 "full/half duplex auto negotiation timeout\n");
229 enable_tp(struct cs_softc *sc)
232 cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
233 control_dc_dc(sc, 0);
238 enable_aui(struct cs_softc *sc)
241 cs_writereg(sc, PP_LineCTL,
242 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
243 control_dc_dc(sc, 0);
248 enable_bnc(struct cs_softc *sc)
251 cs_writereg(sc, PP_LineCTL,
252 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
253 control_dc_dc(sc, 1);
258 cs_cs89x0_probe(device_t dev)
263 struct cs_softc *sc = device_get_softc(dev);
264 unsigned rev_type = 0;
267 uint16_t eeprom_buff[CHKSUM_LEN];
268 int chip_type, pp_isaint, pp_isadma;
271 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
275 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
276 /* Chip not detected. Let's try to reset it */
278 device_printf(dev, "trying to reset the chip.\n");
279 cs_outw(sc, ADD_PORT, PP_SelfCTL);
280 i = cs_inw(sc, DATA_PORT);
281 cs_outw(sc, ADD_PORT, PP_SelfCTL);
282 cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
283 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
287 for (i = 0; i < 10000; i++) {
288 id = cs_readreg(sc, PP_ChipID);
289 if (id == CHIP_EISA_ID_SIG)
295 rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
296 chip_type = rev_type & ~REVISON_BITS;
297 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
299 sc->chip_type = chip_type;
301 if (chip_type == CS8900) {
302 pp_isaint = PP_CS8900_ISAINT;
303 pp_isadma = PP_CS8900_ISADMA;
304 sc->send_cmd = TX_CS8900_AFTER_ALL;
306 pp_isaint = PP_CS8920_ISAINT;
307 pp_isadma = PP_CS8920_ISADMA;
308 sc->send_cmd = TX_CS8920_AFTER_ALL;
312 * Clear some fields so that fail of EEPROM will left them clean
314 sc->auto_neg_cnf = 0;
319 * If no interrupt specified, use what the board tells us.
321 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
324 * Get data from EEPROM
326 if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
327 device_printf(dev, "No EEPROM, assuming defaults.\n");
328 } else if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
329 device_printf(dev, "EEPROM read failed, assuming defaults.\n");
330 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
331 device_printf(dev, "EEPROM cheksum bad, assuming defaults.\n");
333 sc->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET];
334 sc->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET];
335 sc->isa_config = eeprom_buff[ISA_CNF_OFFSET];
336 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
337 sc->enaddr[i*2] = eeprom_buff[i];
338 sc->enaddr[i*2+1] = eeprom_buff[i] >> 8;
341 * If no interrupt specified, use what the
345 irq = sc->isa_config & INT_NO_MASK;
347 if (chip_type == CS8900) {
348 irq = cs8900_eeint2irq[irq];
350 if (irq > CS8920_NO_INTS)
354 device_printf(dev, "invalid irq in EEPROM.\n");
358 bus_set_resource(dev, SYS_RES_IRQ, 0,
363 if (!error && !(sc->flags & CS_NO_IRQ)) {
364 if (chip_type == CS8900) {
366 irq = cs8900_irq2eeint[irq];
370 if (irq > CS8920_NO_INTS)
378 device_printf(dev, "Unknown or invalid irq\n");
382 if (!(sc->flags & CS_NO_IRQ))
383 cs_writereg(sc, pp_isaint, irq);
389 cs_writereg(sc, pp_isadma, drq);
391 device_printf(dev, "incorrect drq\n",);
397 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
398 chip_type == CS8900 ? '0' : '2',
399 chip_type == CS8920M ? "M" : "",
401 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
402 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
403 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
405 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
406 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
407 sc->line_ctl = LOW_RX_SQUELCH;
415 * Allocate a port resource with the given resource id.
418 cs_alloc_port(device_t dev, int rid, int size)
420 struct cs_softc *sc = device_get_softc(dev);
421 struct resource *res;
423 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
424 0ul, ~0ul, size, RF_ACTIVE);
433 * Allocate an irq resource with the given resource id.
436 cs_alloc_irq(device_t dev, int rid)
438 struct cs_softc *sc = device_get_softc(dev);
439 struct resource *res;
441 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
450 * Release all resources
453 cs_release_resources(device_t dev)
455 struct cs_softc *sc = device_get_softc(dev);
458 bus_release_resource(dev, SYS_RES_IOPORT,
459 sc->port_rid, sc->port_res);
463 bus_release_resource(dev, SYS_RES_IRQ,
464 sc->irq_rid, sc->irq_res);
470 * Install the interface into kernel networking data structures
473 cs_attach(device_t dev)
476 struct cs_softc *sc = device_get_softc(dev);
481 ifp = sc->ifp = if_alloc(IFT_ETHER);
483 device_printf(dev, "can not if_alloc()\n");
484 cs_release_resources(dev);
488 mtx_init(&sc->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
490 callout_init_mtx(&sc->timer, &sc->lock, 0);
497 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
498 ifp->if_start=cs_start;
499 ifp->if_ioctl=cs_ioctl;
500 ifp->if_init=cs_init;
501 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
503 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
506 * this code still in progress (DMA support)
509 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT);
510 if (sc->recv_ring == NULL) {
512 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
515 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
516 < (128*1024-CS_DMA_BUFFER_SIZE))
517 sc->recv_ring+=16*1024;
521 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT);
522 if (sc->buffer == NULL) {
523 device_printf(sc->dev, "Couldn't allocate memory for NIC\n");
525 mtx_destroy(&sc->lock);
526 cs_release_resources(dev);
531 * Initialize the media structures.
533 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
535 if (sc->adapter_cnf & A_CNF_10B_T) {
536 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
537 if (sc->chip_type != CS8900) {
538 ifmedia_add(&sc->media,
539 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
540 ifmedia_add(&sc->media,
541 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
545 if (sc->adapter_cnf & A_CNF_10B_2)
546 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
548 if (sc->adapter_cnf & A_CNF_AUI)
549 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
551 if (sc->adapter_cnf & A_CNF_MEDIA)
552 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
554 /* Set default media from EEPROM */
555 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
556 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
557 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
558 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
559 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
561 device_printf(sc->dev, "no media, assuming 10baseT\n");
562 sc->adapter_cnf |= A_CNF_10B_T;
563 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
564 if (sc->chip_type != CS8900) {
565 ifmedia_add(&sc->media,
566 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
567 ifmedia_add(&sc->media,
568 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
570 media = IFM_ETHER | IFM_10_T;
573 ifmedia_set(&sc->media, media);
574 cs_mediaset(sc, media);
576 ether_ifattach(ifp, sc->enaddr);
578 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET | INTR_MPSAFE,
579 NULL, csintr, sc, &sc->irq_handle);
582 free(sc->buffer, M_DEVBUF);
584 mtx_destroy(&sc->lock);
585 cs_release_resources(dev);
593 cs_detach(device_t dev)
598 sc = device_get_softc(dev);
604 callout_drain(&sc->timer);
606 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
607 cs_release_resources(dev);
608 free(sc->buffer, M_DEVBUF);
610 mtx_destroy(&sc->lock);
615 * Initialize the board
620 struct cs_softc *sc=(struct cs_softc *)xsc;
628 cs_init_locked(struct cs_softc *sc)
630 struct ifnet *ifp = sc->ifp;
634 * reset watchdog timer
640 * Hardware initialization of cs
643 /* Enable receiver and transmitter */
644 cs_writereg(sc, PP_LineCTL,
645 cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
647 /* Configure the receiver mode */
651 * This defines what type of frames will cause interrupts
652 * Bad frames should generate interrupts so that the driver
653 * could track statistics of discarded packets
655 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
657 if (sc->isa_config & STREAM_TRANSFER)
658 rx_cfg |= RX_STREAM_ENBL;
659 cs_writereg(sc, PP_RxCFG, rx_cfg);
660 cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL |
661 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
662 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
663 cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL |
664 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
665 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
667 /* Write MAC address into IA filter */
668 for (i=0; i<ETHER_ADDR_LEN/2; i++)
669 cs_writereg(sc, PP_IA + i * 2,
671 (sc->enaddr[i * 2 + 1] << 8) );
674 * Now enable everything
677 #ifdef CS_USE_64K_DMA
678 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
680 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
683 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
686 * Set running and clear output active flags
688 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
689 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
690 callout_reset(&sc->timer, hz, cs_watchdog, sc);
693 * Start sending process
695 cs_start_locked(ifp);
699 * Get the packet from the board and send it to the upper layer.
702 cs_get_packet(struct cs_softc *sc)
704 struct ifnet *ifp = sc->ifp;
706 struct ether_header *eh;
713 status = cs_inw(sc, RX_FRAME_PORT);
714 length = cs_inw(sc, RX_FRAME_PORT);
717 device_printf(sc->dev, "rcvd: stat %x, len %d\n",
721 if (!(status & RX_OK)) {
723 device_printf(sc->dev, "bad pkt stat %x\n", status);
729 MGETHDR(m, M_NOWAIT, MT_DATA);
733 if (length > MHLEN) {
735 if (!(m->m_flags & M_EXT)) {
741 /* Initialize packet's header info */
742 m->m_pkthdr.rcvif = ifp;
743 m->m_pkthdr.len = length;
747 bus_read_multi_2(sc->port_res, RX_FRAME_PORT, mtod(m, uint16_t *),
750 eh = mtod(m, struct ether_header *);
753 for (i=0;i<length;i++)
754 printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
758 if (status & (RX_IA | RX_BROADCAST) ||
759 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
760 /* Feed the packet to the upper layer */
761 (*ifp->if_input)(ifp, m);
763 if (length == ETHER_MAX_LEN-ETHER_CRC_LEN)
764 DELAY(cs_recv_delay);
778 struct cs_softc *sc = (struct cs_softc*) arg;
779 struct ifnet *ifp = sc->ifp;
783 device_printf(sc->dev, "Interrupt.\n");
787 while ((status=cs_inw(sc, ISQ_PORT))) {
790 device_printf(sc->dev, "from ISQ: %04x\n", status);
793 switch (status & ISQ_EVENT_MASK) {
794 case ISQ_RECEIVER_EVENT:
798 case ISQ_TRANSMITTER_EVENT:
803 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
807 case ISQ_BUFFER_EVENT:
808 if (status & READY_FOR_TX) {
809 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
813 if (status & TX_UNDERRUN) {
814 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
820 case ISQ_RX_MISS_EVENT:
821 ifp->if_ierrors+=(status>>6);
824 case ISQ_TX_COL_EVENT:
825 ifp->if_collisions+=(status>>6);
830 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
831 cs_start_locked(ifp);
837 * Save the data in buffer
841 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
845 unsigned char *data, *buf;
847 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
857 * Find actual data address
859 data = mtod(mp, caddr_t);
861 bcopy((caddr_t) data, (caddr_t) buf, len);
869 cs_xmit_buf( struct cs_softc *sc )
871 bus_write_multi_2(sc->port_res, TX_FRAME_PORT, (uint16_t *)sc->buffer,
872 (sc->buf_len + 1) >> 1);
877 cs_start(struct ifnet *ifp)
879 struct cs_softc *sc = ifp->if_softc;
882 cs_start_locked(ifp);
887 cs_start_locked(struct ifnet *ifp)
891 struct cs_softc *sc = ifp->if_softc;
895 length = sc->buf_len;
897 IF_DEQUEUE( &ifp->if_snd, m );
903 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
906 /* Skip zero-length packets */
912 cs_write_mbufs(sc, m);
920 * Issue a SEND command
922 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
923 cs_outw(sc, TX_LEN_PORT, length );
926 * If there's no free space in the buffer then leave
927 * this packet for the next time: indicate output active
930 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
931 sc->tx_timeout = sc->buf_len;
932 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
939 * Set the watchdog timer in case we never hear
940 * from board again. (I don't know about correct
941 * value for this timeout)
943 sc->tx_timeout = length;
945 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
951 * Stop everything on the interface
954 cs_stop(struct cs_softc *sc)
957 CS_ASSERT_LOCKED(sc);
958 cs_writereg(sc, PP_RxCFG, 0);
959 cs_writereg(sc, PP_TxCFG, 0);
960 cs_writereg(sc, PP_BufCFG, 0);
961 cs_writereg(sc, PP_BusCTL, 0);
963 sc->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
965 callout_stop(&sc->timer);
969 * Reset the interface
972 cs_reset(struct cs_softc *sc)
975 CS_ASSERT_LOCKED(sc);
981 cs_hash_index(struct sockaddr_dl *addr)
988 crc = ether_crc32_le(lla, ETHER_ADDR_LEN);
995 cs_setmode(struct cs_softc *sc)
999 uint16_t port, mask, index;
1000 struct ifnet *ifp = sc->ifp;
1001 struct ifmultiaddr *ifma;
1003 /* Stop the receiver while changing filters */
1004 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
1006 if (ifp->if_flags & IFF_PROMISC) {
1007 /* Turn on promiscuous mode. */
1008 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1009 } else if (ifp->if_flags & IFF_MULTICAST) {
1010 /* Allow receiving frames with multicast addresses */
1011 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1012 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1014 /* Start with an empty filter */
1015 af[0] = af[1] = af[2] = af[3] = 0x0000;
1017 if (ifp->if_flags & IFF_ALLMULTI) {
1018 /* Accept all multicast frames */
1019 af[0] = af[1] = af[2] = af[3] = 0xffff;
1022 * Set up the filter to only accept multicast
1023 * frames we're interested in.
1025 if_maddr_rlock(ifp);
1026 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1027 struct sockaddr_dl *dl =
1028 (struct sockaddr_dl *)ifma->ifma_addr;
1030 index = cs_hash_index(dl);
1031 port = (u_int16_t) (index >> 4);
1032 mask = (u_int16_t) (1 << (index & 0xf));
1035 if_maddr_runlock(ifp);
1038 cs_writereg(sc, PP_LAF + 0, af[0]);
1039 cs_writereg(sc, PP_LAF + 2, af[1]);
1040 cs_writereg(sc, PP_LAF + 4, af[2]);
1041 cs_writereg(sc, PP_LAF + 6, af[3]);
1044 * Receive only good frames addressed for us and
1047 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1051 /* Set up the filter */
1052 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1054 /* Turn on receiver */
1055 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1059 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data)
1061 struct cs_softc *sc=ifp->if_softc;
1062 struct ifreq *ifr = (struct ifreq *)data;
1066 if_printf(ifp, "%s command=%lx\n", __func__, command);
1072 * Switch interface state between "running" and
1073 * "stopped", reflecting the UP flag.
1076 if (sc->ifp->if_flags & IFF_UP) {
1077 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)==0) {
1081 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)!=0) {
1086 * Promiscuous and/or multicast flags may have changed,
1087 * so reprogram the multicast filter and/or receive mode.
1089 * See note about multicasts in cs_setmode
1098 * Multicast list has changed; set the hardware filter
1101 * See note about multicasts in cs_setmode
1111 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1115 error = ether_ioctl(ifp, command, data);
1123 * Device timeout/watchdog routine. Entered if the device neglects to
1124 * generate an interrupt after a transmit has been started on it.
1127 cs_watchdog(void *arg)
1129 struct cs_softc *sc = arg;
1130 struct ifnet *ifp = sc->ifp;
1132 CS_ASSERT_LOCKED(sc);
1133 if (sc->tx_timeout && --sc->tx_timeout == 0) {
1135 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1137 /* Reset the interface */
1138 if (ifp->if_flags & IFF_UP)
1143 callout_reset(&sc->timer, hz, cs_watchdog, sc);
1147 cs_mediachange(struct ifnet *ifp)
1149 struct cs_softc *sc = ifp->if_softc;
1150 struct ifmedia *ifm = &sc->media;
1153 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1157 error = cs_mediaset(sc, ifm->ifm_media);
1163 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1166 struct cs_softc *sc = ifp->if_softc;
1169 ifmr->ifm_active = IFM_ETHER;
1170 line_status = cs_readreg(sc, PP_LineST);
1171 if (line_status & TENBASET_ON) {
1172 ifmr->ifm_active |= IFM_10_T;
1173 if (sc->chip_type != CS8900) {
1174 if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE)
1175 ifmr->ifm_active |= IFM_FDX;
1176 if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE)
1177 ifmr->ifm_active |= IFM_HDX;
1179 ifmr->ifm_status = IFM_AVALID;
1180 if (line_status & LINK_OK)
1181 ifmr->ifm_status |= IFM_ACTIVE;
1183 if (line_status & AUI_ON) {
1184 cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) |
1186 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1187 (cs_readreg(sc, PP_SelfCTL) & HCB1))
1188 ifmr->ifm_active |= IFM_10_2;
1190 ifmr->ifm_active |= IFM_10_5;
1197 cs_mediaset(struct cs_softc *sc, int media)
1201 /* Stop the receiver & transmitter */
1202 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
1203 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1206 device_printf(sc->dev, "%s media=%x\n", __func__, media);
1209 switch (IFM_SUBTYPE(media)) {
1213 * This chip makes it a little hard to support this, so treat
1214 * it as IFM_10_T, auto duplex.
1221 if (media & IFM_FDX)
1223 else if (media & IFM_HDX)
1226 error = cs_duplex_auto(sc);
1237 * Turn the transmitter & receiver back on
1239 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) |
1240 SERIAL_RX_ON | SERIAL_TX_ON);