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_var.h>
60 #include <net/if_arp.h>
61 #include <net/if_dl.h>
62 #include <net/if_media.h>
63 #include <net/if_types.h>
64 #include <net/ethernet.h>
67 #include <dev/cs/if_csvar.h>
68 #include <dev/cs/if_csreg.h>
71 #define CS_DMA_BUFFER_SIZE 65536
73 #define CS_DMA_BUFFER_SIZE 16384
76 static void cs_init(void *);
77 static void cs_init_locked(struct cs_softc *);
78 static int cs_ioctl(struct ifnet *, u_long, caddr_t);
79 static void cs_start(struct ifnet *);
80 static void cs_start_locked(struct ifnet *);
81 static void cs_stop(struct cs_softc *);
82 static void cs_reset(struct cs_softc *);
83 static void cs_watchdog(void *);
85 static int cs_mediachange(struct ifnet *);
86 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
87 static int cs_mediaset(struct cs_softc *, int);
89 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
90 static void cs_xmit_buf(struct cs_softc*);
91 static int cs_get_packet(struct cs_softc*);
92 static void cs_setmode(struct cs_softc*);
94 static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
95 static int get_eeprom_cksum(int, int, uint16_t *);
96 static int wait_eeprom_ready( struct cs_softc *);
97 static void control_dc_dc( struct cs_softc *, int );
98 static int enable_tp(struct cs_softc *);
99 static int enable_aui(struct cs_softc *);
100 static int enable_bnc(struct cs_softc *);
101 static int cs_duplex_auto(struct cs_softc *);
103 devclass_t cs_devclass;
104 driver_intr_t csintr;
107 static SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
109 int cs_ignore_cksum_failure = 0;
110 SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RWTUN,
111 &cs_ignore_cksum_failure, 0,
112 "ignore checksum errors in cs card EEPROM");
114 static int cs_recv_delay = 570;
115 SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RWTUN, &cs_recv_delay, 570, "");
117 static int cs8900_eeint2irq[16] = {
118 10, 11, 12, 5, 255, 255, 255, 255,
119 255, 255, 255, 255, 255, 255, 255, 255
122 static int cs8900_irq2eeint[16] = {
123 255, 255, 255, 255, 255, 3, 255, 255,
124 255, 0, 1, 2, 255, 255, 255, 255
128 get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
133 device_printf(sc->dev, "EEPROM data from %x for %x:\n", off, len);
135 for (i=0; i < len; i++) {
136 if (wait_eeprom_ready(sc) < 0)
138 /* Send command to EEPROM to read */
139 cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
140 if (wait_eeprom_ready(sc) < 0)
142 buffer[i] = cs_readreg(sc, PP_EEData);
145 printf("%04x ",buffer[i]);
156 get_eeprom_cksum(int off, int len, uint16_t *buffer)
161 for (i = 0; i < len; i++)
164 if (cksum == 0 || cs_ignore_cksum_failure)
170 wait_eeprom_ready(struct cs_softc *sc)
175 * From the CS8900A datasheet, section 3.5.2:
176 * "Before issuing any command to the EEPROM, the host must wait
177 * for the SIBUSY bit (Register 16, SelfST, bit 8) to clear. After
178 * each command has been issued, the host must wait again for SIBUSY
181 * Before we issue the command, we should be !busy, so that will
182 * be fast. The datasheet suggests that clock out from the part
183 * per word will be on the order of 25us, which is consistent with
184 * the 1MHz serial clock and 16bits... We should never hit 100,
185 * let alone 15,000 here. The original code did an unconditional
186 * 30ms DELAY here. Bad Kharma. cs_readreg takes ~2us.
188 for (i = 0; i < 15000; i++) /* 30ms max */
189 if (!(cs_readreg(sc, PP_SelfST) & SI_BUSY))
195 control_dc_dc(struct cs_softc *sc, int on_not_off)
197 unsigned int self_control = HCB1_ENBL;
199 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
200 self_control |= HCB1;
202 self_control &= ~HCB1;
203 cs_writereg(sc, PP_SelfCTL, self_control);
204 DELAY(500000); /* Bad! */
209 cs_duplex_auto(struct cs_softc *sc)
213 cs_writereg(sc, PP_AutoNegCTL,
214 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
215 for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
217 device_printf(sc->dev,
218 "full/half duplex auto negotiation timeout\n");
228 enable_tp(struct cs_softc *sc)
231 cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
232 control_dc_dc(sc, 0);
237 enable_aui(struct cs_softc *sc)
240 cs_writereg(sc, PP_LineCTL,
241 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
242 control_dc_dc(sc, 0);
247 enable_bnc(struct cs_softc *sc)
250 cs_writereg(sc, PP_LineCTL,
251 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
252 control_dc_dc(sc, 1);
257 cs_cs89x0_probe(device_t dev)
261 rman_res_t irq, junk;
262 struct cs_softc *sc = device_get_softc(dev);
263 unsigned rev_type = 0;
266 uint16_t eeprom_buff[CHKSUM_LEN];
267 int chip_type, pp_isaint;
270 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
274 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
275 /* Chip not detected. Let's try to reset it */
277 device_printf(dev, "trying to reset the chip.\n");
278 cs_outw(sc, ADD_PORT, PP_SelfCTL);
279 i = cs_inw(sc, DATA_PORT);
280 cs_outw(sc, ADD_PORT, PP_SelfCTL);
281 cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
282 if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
286 for (i = 0; i < 10000; i++) {
287 id = cs_readreg(sc, PP_ChipID);
288 if (id == CHIP_EISA_ID_SIG)
294 rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
295 chip_type = rev_type & ~REVISON_BITS;
296 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
298 sc->chip_type = chip_type;
300 if (chip_type == CS8900) {
301 pp_isaint = PP_CS8900_ISAINT;
302 sc->send_cmd = TX_CS8900_AFTER_ALL;
304 pp_isaint = PP_CS8920_ISAINT;
305 sc->send_cmd = TX_CS8920_AFTER_ALL;
309 * Clear some fields so that fail of EEPROM will left them clean
311 sc->auto_neg_cnf = 0;
316 * If no interrupt specified, use what the board tells us.
318 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
321 * Get data from EEPROM
323 if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
324 device_printf(dev, "No EEPROM, assuming defaults.\n");
325 } else if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
326 device_printf(dev, "EEPROM read failed, assuming defaults.\n");
327 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
328 device_printf(dev, "EEPROM cheksum bad, assuming defaults.\n");
330 sc->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET];
331 sc->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET];
332 sc->isa_config = eeprom_buff[ISA_CNF_OFFSET];
333 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
334 sc->enaddr[i*2] = eeprom_buff[i];
335 sc->enaddr[i*2+1] = eeprom_buff[i] >> 8;
338 * If no interrupt specified, use what the
342 irq = sc->isa_config & INT_NO_MASK;
344 if (chip_type == CS8900) {
345 irq = cs8900_eeint2irq[irq];
347 if (irq > CS8920_NO_INTS)
351 device_printf(dev, "invalid irq in EEPROM.\n");
355 bus_set_resource(dev, SYS_RES_IRQ, 0,
360 if (!error && !(sc->flags & CS_NO_IRQ)) {
361 if (chip_type == CS8900) {
363 irq = cs8900_irq2eeint[irq];
367 if (irq > CS8920_NO_INTS)
375 device_printf(dev, "Unknown or invalid irq\n");
379 if (!(sc->flags & CS_NO_IRQ))
380 cs_writereg(sc, pp_isaint, irq);
383 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
384 chip_type == CS8900 ? '0' : '2',
385 chip_type == CS8920M ? "M" : "",
387 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
388 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
389 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
391 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
392 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
393 sc->line_ctl = LOW_RX_SQUELCH;
401 * Allocate a port resource with the given resource id.
404 cs_alloc_port(device_t dev, int rid, int size)
406 struct cs_softc *sc = device_get_softc(dev);
407 struct resource *res;
409 res = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
419 * Allocate an irq resource with the given resource id.
422 cs_alloc_irq(device_t dev, int rid)
424 struct cs_softc *sc = device_get_softc(dev);
425 struct resource *res;
427 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
436 * Release all resources
439 cs_release_resources(device_t dev)
441 struct cs_softc *sc = device_get_softc(dev);
444 bus_release_resource(dev, SYS_RES_IOPORT,
445 sc->port_rid, sc->port_res);
449 bus_release_resource(dev, SYS_RES_IRQ,
450 sc->irq_rid, sc->irq_res);
456 * Install the interface into kernel networking data structures
459 cs_attach(device_t dev)
462 struct cs_softc *sc = device_get_softc(dev);
467 ifp = sc->ifp = if_alloc(IFT_ETHER);
469 device_printf(dev, "can not if_alloc()\n");
470 cs_release_resources(dev);
474 mtx_init(&sc->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
476 callout_init_mtx(&sc->timer, &sc->lock, 0);
483 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
484 ifp->if_start=cs_start;
485 ifp->if_ioctl=cs_ioctl;
486 ifp->if_init=cs_init;
487 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
489 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
492 * this code still in progress (DMA support)
495 sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT);
496 if (sc->recv_ring == NULL) {
498 "%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
501 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
502 < (128*1024-CS_DMA_BUFFER_SIZE))
503 sc->recv_ring+=16*1024;
507 sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT);
508 if (sc->buffer == NULL) {
509 device_printf(sc->dev, "Couldn't allocate memory for NIC\n");
511 mtx_destroy(&sc->lock);
512 cs_release_resources(dev);
517 * Initialize the media structures.
519 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
521 if (sc->adapter_cnf & A_CNF_10B_T) {
522 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
523 if (sc->chip_type != CS8900) {
524 ifmedia_add(&sc->media,
525 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
526 ifmedia_add(&sc->media,
527 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
531 if (sc->adapter_cnf & A_CNF_10B_2)
532 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
534 if (sc->adapter_cnf & A_CNF_AUI)
535 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
537 if (sc->adapter_cnf & A_CNF_MEDIA)
538 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
540 /* Set default media from EEPROM */
541 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
542 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
543 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
544 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
545 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
547 device_printf(sc->dev, "no media, assuming 10baseT\n");
548 sc->adapter_cnf |= A_CNF_10B_T;
549 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
550 if (sc->chip_type != CS8900) {
551 ifmedia_add(&sc->media,
552 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
553 ifmedia_add(&sc->media,
554 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
556 media = IFM_ETHER | IFM_10_T;
559 ifmedia_set(&sc->media, media);
560 cs_mediaset(sc, media);
562 ether_ifattach(ifp, sc->enaddr);
564 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET | INTR_MPSAFE,
565 NULL, csintr, sc, &sc->irq_handle);
568 free(sc->buffer, M_DEVBUF);
570 mtx_destroy(&sc->lock);
571 cs_release_resources(dev);
579 cs_detach(device_t dev)
584 sc = device_get_softc(dev);
590 callout_drain(&sc->timer);
592 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
593 cs_release_resources(dev);
594 free(sc->buffer, M_DEVBUF);
596 mtx_destroy(&sc->lock);
601 * Initialize the board
606 struct cs_softc *sc=(struct cs_softc *)xsc;
614 cs_init_locked(struct cs_softc *sc)
616 struct ifnet *ifp = sc->ifp;
620 * reset watchdog timer
626 * Hardware initialization of cs
629 /* Enable receiver and transmitter */
630 cs_writereg(sc, PP_LineCTL,
631 cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
633 /* Configure the receiver mode */
637 * This defines what type of frames will cause interrupts
638 * Bad frames should generate interrupts so that the driver
639 * could track statistics of discarded packets
641 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
643 if (sc->isa_config & STREAM_TRANSFER)
644 rx_cfg |= RX_STREAM_ENBL;
645 cs_writereg(sc, PP_RxCFG, rx_cfg);
646 cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL |
647 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
648 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
649 cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL |
650 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
651 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
653 /* Write MAC address into IA filter */
654 for (i=0; i<ETHER_ADDR_LEN/2; i++)
655 cs_writereg(sc, PP_IA + i * 2,
657 (sc->enaddr[i * 2 + 1] << 8) );
660 * Now enable everything
663 #ifdef CS_USE_64K_DMA
664 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
666 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
669 cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
672 * Set running and clear output active flags
674 sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
675 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
676 callout_reset(&sc->timer, hz, cs_watchdog, sc);
679 * Start sending process
681 cs_start_locked(ifp);
685 * Get the packet from the board and send it to the upper layer.
688 cs_get_packet(struct cs_softc *sc)
690 struct ifnet *ifp = sc->ifp;
698 status = cs_inw(sc, RX_FRAME_PORT);
699 length = cs_inw(sc, RX_FRAME_PORT);
702 device_printf(sc->dev, "rcvd: stat %x, len %d\n",
706 if (!(status & RX_OK)) {
708 device_printf(sc->dev, "bad pkt stat %x\n", status);
710 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
714 MGETHDR(m, M_NOWAIT, MT_DATA);
718 if (length > MHLEN) {
719 if (!(MCLGET(m, M_NOWAIT))) {
725 /* Initialize packet's header info */
726 m->m_pkthdr.rcvif = ifp;
727 m->m_pkthdr.len = length;
731 bus_read_multi_2(sc->port_res, RX_FRAME_PORT, mtod(m, uint16_t *),
735 for (i=0;i<length;i++)
736 printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
740 if (status & (RX_IA | RX_BROADCAST) ||
741 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
742 /* Feed the packet to the upper layer */
743 (*ifp->if_input)(ifp, m);
744 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
745 if (length == ETHER_MAX_LEN-ETHER_CRC_LEN)
746 DELAY(cs_recv_delay);
760 struct cs_softc *sc = (struct cs_softc*) arg;
761 struct ifnet *ifp = sc->ifp;
765 device_printf(sc->dev, "Interrupt.\n");
769 while ((status=cs_inw(sc, ISQ_PORT))) {
772 device_printf(sc->dev, "from ISQ: %04x\n", status);
775 switch (status & ISQ_EVENT_MASK) {
776 case ISQ_RECEIVER_EVENT:
780 case ISQ_TRANSMITTER_EVENT:
782 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
784 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
785 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
789 case ISQ_BUFFER_EVENT:
790 if (status & READY_FOR_TX) {
791 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
795 if (status & TX_UNDERRUN) {
796 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
798 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
802 case ISQ_RX_MISS_EVENT:
803 if_inc_counter(ifp, IFCOUNTER_IERRORS, status >> 6);
806 case ISQ_TX_COL_EVENT:
807 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, status >> 6);
812 if (!(ifp->if_drv_flags & IFF_DRV_OACTIVE)) {
813 cs_start_locked(ifp);
819 * Save the data in buffer
823 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
827 unsigned char *data, *buf;
829 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
839 * Find actual data address
841 data = mtod(mp, caddr_t);
843 bcopy((caddr_t) data, (caddr_t) buf, len);
851 cs_xmit_buf( struct cs_softc *sc )
853 bus_write_multi_2(sc->port_res, TX_FRAME_PORT, (uint16_t *)sc->buffer,
854 (sc->buf_len + 1) >> 1);
859 cs_start(struct ifnet *ifp)
861 struct cs_softc *sc = ifp->if_softc;
864 cs_start_locked(ifp);
869 cs_start_locked(struct ifnet *ifp)
873 struct cs_softc *sc = ifp->if_softc;
877 length = sc->buf_len;
879 IF_DEQUEUE( &ifp->if_snd, m );
885 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
888 /* Skip zero-length packets */
894 cs_write_mbufs(sc, m);
902 * Issue a SEND command
904 cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
905 cs_outw(sc, TX_LEN_PORT, length );
908 * If there's no free space in the buffer then leave
909 * this packet for the next time: indicate output active
912 if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
913 sc->tx_timeout = sc->buf_len;
914 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
921 * Set the watchdog timer in case we never hear
922 * from board again. (I don't know about correct
923 * value for this timeout)
925 sc->tx_timeout = length;
927 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
933 * Stop everything on the interface
936 cs_stop(struct cs_softc *sc)
939 CS_ASSERT_LOCKED(sc);
940 cs_writereg(sc, PP_RxCFG, 0);
941 cs_writereg(sc, PP_TxCFG, 0);
942 cs_writereg(sc, PP_BufCFG, 0);
943 cs_writereg(sc, PP_BusCTL, 0);
945 sc->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
947 callout_stop(&sc->timer);
951 * Reset the interface
954 cs_reset(struct cs_softc *sc)
957 CS_ASSERT_LOCKED(sc);
963 cs_hash_index(struct sockaddr_dl *addr)
970 crc = ether_crc32_le(lla, ETHER_ADDR_LEN);
977 cs_setmode(struct cs_softc *sc)
981 uint16_t port, mask, index;
982 struct ifnet *ifp = sc->ifp;
983 struct ifmultiaddr *ifma;
985 /* Stop the receiver while changing filters */
986 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
988 if (ifp->if_flags & IFF_PROMISC) {
989 /* Turn on promiscuous mode. */
990 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
991 } else if (ifp->if_flags & IFF_MULTICAST) {
992 /* Allow receiving frames with multicast addresses */
993 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
994 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
996 /* Start with an empty filter */
997 af[0] = af[1] = af[2] = af[3] = 0x0000;
999 if (ifp->if_flags & IFF_ALLMULTI) {
1000 /* Accept all multicast frames */
1001 af[0] = af[1] = af[2] = af[3] = 0xffff;
1004 * Set up the filter to only accept multicast
1005 * frames we're interested in.
1007 if_maddr_rlock(ifp);
1008 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1009 struct sockaddr_dl *dl =
1010 (struct sockaddr_dl *)ifma->ifma_addr;
1012 index = cs_hash_index(dl);
1013 port = (u_int16_t) (index >> 4);
1014 mask = (u_int16_t) (1 << (index & 0xf));
1017 if_maddr_runlock(ifp);
1020 cs_writereg(sc, PP_LAF + 0, af[0]);
1021 cs_writereg(sc, PP_LAF + 2, af[1]);
1022 cs_writereg(sc, PP_LAF + 4, af[2]);
1023 cs_writereg(sc, PP_LAF + 6, af[3]);
1026 * Receive only good frames addressed for us and
1029 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1033 /* Set up the filter */
1034 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1036 /* Turn on receiver */
1037 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1041 cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data)
1043 struct cs_softc *sc=ifp->if_softc;
1044 struct ifreq *ifr = (struct ifreq *)data;
1048 if_printf(ifp, "%s command=%lx\n", __func__, command);
1054 * Switch interface state between "running" and
1055 * "stopped", reflecting the UP flag.
1058 if (sc->ifp->if_flags & IFF_UP) {
1059 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)==0) {
1063 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)!=0) {
1068 * Promiscuous and/or multicast flags may have changed,
1069 * so reprogram the multicast filter and/or receive mode.
1071 * See note about multicasts in cs_setmode
1080 * Multicast list has changed; set the hardware filter
1083 * See note about multicasts in cs_setmode
1093 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1097 error = ether_ioctl(ifp, command, data);
1105 * Device timeout/watchdog routine. Entered if the device neglects to
1106 * generate an interrupt after a transmit has been started on it.
1109 cs_watchdog(void *arg)
1111 struct cs_softc *sc = arg;
1112 struct ifnet *ifp = sc->ifp;
1114 CS_ASSERT_LOCKED(sc);
1115 if (sc->tx_timeout && --sc->tx_timeout == 0) {
1116 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1117 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1119 /* Reset the interface */
1120 if (ifp->if_flags & IFF_UP)
1125 callout_reset(&sc->timer, hz, cs_watchdog, sc);
1129 cs_mediachange(struct ifnet *ifp)
1131 struct cs_softc *sc = ifp->if_softc;
1132 struct ifmedia *ifm = &sc->media;
1135 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1139 error = cs_mediaset(sc, ifm->ifm_media);
1145 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1148 struct cs_softc *sc = ifp->if_softc;
1151 ifmr->ifm_active = IFM_ETHER;
1152 line_status = cs_readreg(sc, PP_LineST);
1153 if (line_status & TENBASET_ON) {
1154 ifmr->ifm_active |= IFM_10_T;
1155 if (sc->chip_type != CS8900) {
1156 if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE)
1157 ifmr->ifm_active |= IFM_FDX;
1158 if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE)
1159 ifmr->ifm_active |= IFM_HDX;
1161 ifmr->ifm_status = IFM_AVALID;
1162 if (line_status & LINK_OK)
1163 ifmr->ifm_status |= IFM_ACTIVE;
1165 if (line_status & AUI_ON) {
1166 cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) |
1168 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1169 (cs_readreg(sc, PP_SelfCTL) & HCB1))
1170 ifmr->ifm_active |= IFM_10_2;
1172 ifmr->ifm_active |= IFM_10_5;
1179 cs_mediaset(struct cs_softc *sc, int media)
1183 /* Stop the receiver & transmitter */
1184 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
1185 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1188 device_printf(sc->dev, "%s media=%x\n", __func__, media);
1191 switch (IFM_SUBTYPE(media)) {
1195 * This chip makes it a little hard to support this, so treat
1196 * it as IFM_10_T, auto duplex.
1203 if (media & IFM_FDX)
1205 else if (media & IFM_HDX)
1208 error = cs_duplex_auto(sc);
1219 * Turn the transmitter & receiver back on
1221 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) |
1222 SERIAL_RX_ON | SERIAL_TX_ON);