2 * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/cs/if_cs.c,v 1.19.2.1 2001/01/25 20:13:48 imp Exp $
28 * $DragonFly: src/sys/dev/netif/cs/if_cs.c,v 1.28 2006/12/22 23:26:19 swildner Exp $
32 * Device driver for Crystal Semiconductor CS8920 based ethernet
33 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
44 #include <sys/socket.h>
45 #include <sys/sockio.h>
46 #include <sys/kernel.h>
47 #include <sys/sysctl.h>
48 #include <sys/syslog.h>
49 #include <sys/module.h>
52 #include <sys/thread2.h>
54 #include <machine/clock.h>
57 #include <net/ifq_var.h>
58 #include <net/if_arp.h>
59 #include <net/if_media.h>
60 #include <net/ethernet.h>
67 #define CS_DMA_BUFFER_SIZE 65536
69 #define CS_DMA_BUFFER_SIZE 16384
72 static int cs_recv_delay = 570;
73 SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, "");
75 static void cs_init(void *);
76 static int cs_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
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 *);
81 static void csintr(void *);
83 static int cs_mediachange(struct ifnet *);
84 static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
85 static int cs_mediaset(struct cs_softc *, int);
87 static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
88 static void cs_xmit_buf(struct cs_softc*);
89 static int cs_get_packet(struct cs_softc*);
90 static void cs_setmode(struct cs_softc*);
92 static int get_eeprom_data(device_t, int, int, int *);
93 static int get_eeprom_cksum(int, int, int *);
94 static int wait_eeprom_ready( struct cs_softc *);
95 static void control_dc_dc(struct cs_softc *, int );
96 static int send_test_pkt(struct cs_softc * );
97 static int enable_tp(struct cs_softc *);
98 static int enable_aui(struct cs_softc *);
99 static int enable_bnc(struct cs_softc *);
100 static int cs_duplex_auto(struct cs_softc *);
102 devclass_t cs_devclass;
104 DECLARE_DUMMY_MODULE(if_cs);
107 get_eeprom_data(device_t dev, int off, int len, int *buffer)
112 sc = device_get_softc(dev);
115 device_printf(dev, "EEPROM data from %x for %x:\n", off, len);
118 for (i=0;i<len;i++) {
119 if (wait_eeprom_ready(sc) < 0) return -1;
120 /* Send command to EEPROM to read */
121 cs_writereg(sc->nic_addr, PP_EECMD, (off+i)|EEPROM_READ_CMD );
122 if (wait_eeprom_ready(sc)<0)
124 buffer[i] = cs_readreg (sc->nic_addr, PP_EEData);
127 kprintf("%02x %02x ",(unsigned char)buffer[i],
128 (unsigned char)buffer[i+1]);
140 get_eeprom_cksum(int off, int len, int *buffer)
153 wait_eeprom_ready(struct cs_softc *sc)
155 DELAY ( 30000 ); /* XXX should we do some checks here ? */
160 control_dc_dc(struct cs_softc *sc, int on_not_off)
162 unsigned int self_control = HCB1_ENBL;
164 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
165 self_control |= HCB1;
167 self_control &= ~HCB1;
168 cs_writereg( sc->nic_addr, PP_SelfCTL, self_control );
175 cs_duplex_auto(struct cs_softc *sc)
179 cs_writereg(sc->nic_addr, PP_AutoNegCTL,
180 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE );
181 for (i=0; cs_readreg(sc->nic_addr,PP_AutoNegST)&AUTO_NEG_BUSY; i++) {
183 if_printf(&sc->arpcom.ac_if, "full/half duplex "
184 "auto negotiation timeout\n");
195 enable_tp(struct cs_softc *sc)
197 cs_writereg(sc->nic_addr, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
198 control_dc_dc(sc, 0);
201 if ((cs_readreg(sc->nic_addr, PP_LineST) & LINK_OK)==0) {
202 if_printf(&sc->arpcom.ac_if, "failed to enable TP\n");
210 * XXX This was rewritten from Linux driver without any tests.
213 send_test_pkt(struct cs_softc *sc)
215 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
216 0, 46, /* A 46 in network order */
217 0, 0, /* DSAP=0 & SSAP=0 fields */
218 0xf3, 0 /* Control (Test Req + P bit set) */ };
220 u_char ether_address_backup[ETHER_ADDR_LEN];
222 for (i = 0; i < ETHER_ADDR_LEN; i++) {
223 ether_address_backup[i] = sc->arpcom.ac_enaddr[i];
226 cs_writereg(sc->nic_addr, PP_LineCTL,
227 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_TX_ON );
229 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
230 bcopy(test_packet+ETHER_ADDR_LEN,
231 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
232 outw(sc->nic_addr + TX_CMD_PORT, sc->send_cmd);
233 outw(sc->nic_addr + TX_LEN_PORT, sizeof(test_packet));
235 /* Wait for chip to allocate memory */
237 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
238 for (i = 0; i < ETHER_ADDR_LEN; i++) {
239 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
244 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
248 if ((cs_readreg(sc->nic_addr,PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
249 for (i = 0; i < ETHER_ADDR_LEN; i++) {
250 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
254 for (i = 0; i < ETHER_ADDR_LEN; i++) {
255 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
261 * XXX This was rewritten from Linux driver without any tests.
264 enable_aui(struct cs_softc *sc)
266 control_dc_dc(sc, 0);
267 cs_writereg(sc->nic_addr, PP_LineCTL,
268 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
270 if (!send_test_pkt(sc)) {
271 if_printf(&sc->arpcom.ac_if, "failed to enable AUI\n");
278 * XXX This was rewritten from Linux driver without any tests.
281 enable_bnc(struct cs_softc *sc)
283 control_dc_dc(sc, 1);
284 cs_writereg(sc->nic_addr, PP_LineCTL,
285 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
287 if (!send_test_pkt(sc)) {
288 if_printf(&sc->arpcom.ac_if, "failed to enable BNC\n");
295 cs_cs89x0_probe(device_t dev)
303 struct cs_softc *sc = device_get_softc(dev);
305 unsigned rev_type = 0;
307 int eeprom_buff[CHKSUM_LEN];
308 int chip_type, pp_isaint, pp_isadma;
310 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
314 iobase=rman_get_start(sc->port_res);
316 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG) {
317 /* Chip not detected. Let's try to reset it */
319 device_printf(dev, "trying to reset the chip.\n");
320 outw(iobase+ADD_PORT, PP_SelfCTL);
321 i = inw(iobase+DATA_PORT);
322 outw(iobase+ADD_PORT, PP_SelfCTL);
323 outw(iobase+DATA_PORT, i | POWER_ON_RESET);
324 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG)
328 outw(iobase+ADD_PORT, PP_ChipID);
329 if (inw(iobase+DATA_PORT) != CHIP_EISA_ID_SIG)
332 rev_type = cs_readreg(iobase, PRODUCT_ID_ADD);
333 chip_type = rev_type & ~REVISON_BITS;
334 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
336 sc->nic_addr = iobase;
337 sc->chip_type = chip_type;
339 if(chip_type==CS8900) {
340 pp_isaint = PP_CS8900_ISAINT;
341 pp_isadma = PP_CS8900_ISADMA;
342 sc->send_cmd = TX_CS8900_AFTER_ALL;
344 pp_isaint = PP_CS8920_ISAINT;
345 pp_isadma = PP_CS8920_ISADMA;
346 sc->send_cmd = TX_CS8920_AFTER_ALL;
350 * Clear some fields so that fail of EEPROM will left them clean
352 sc->auto_neg_cnf = 0;
357 * If no interrupt specified (or "?"), use what the board tells us.
359 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
362 * Get data from EEPROM
364 if((cs_readreg(iobase, PP_SelfST) & EEPROM_PRESENT) == 0) {
365 device_printf(dev, "No EEPROM, assuming defaults.\n");
367 if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN,
369 device_printf(dev, "EEPROM read failed, "
370 "assuming defaults.\n");
372 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
373 device_printf(dev, "EEPROM cheksum bad, "
374 "assuming defaults.\n");
377 eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
379 eeprom_buff[ADAPTER_CNF_OFFSET/2];
381 eeprom_buff[ISA_CNF_OFFSET/2];
383 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
384 sc->arpcom.ac_enaddr[i*2]=
386 sc->arpcom.ac_enaddr[i*2+1]=
391 * If no interrupt specified (or "?"),
392 * use what the board tells us.
395 irq = sc->isa_config & INT_NO_MASK;
396 if (chip_type==CS8900) {
415 device_printf(dev, "invalid irq in EEPROM.\n");
419 if (irq>CS8920_NO_INTS) {
420 device_printf(dev, "invalid irq in EEPROM.\n");
428 bus_set_resource(dev, SYS_RES_IRQ, 0,
436 if (chip_type == CS8900) {
454 if (irq > CS8920_NO_INTS) {
461 cs_writereg(iobase, pp_isaint, irq);
463 device_printf(dev, "Unknown or invalid irq\n");
471 cs_writereg(iobase, pp_isadma, drq);
473 device_printf(dev, "incorrect drq\n");
479 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
480 chip_type==CS8900 ? '0' : '2',
481 chip_type==CS8920M ? "M" : "",
483 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
484 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
485 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
487 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
488 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
489 sc->line_ctl = LOW_RX_SQUELCH;
498 * Allocate a port resource with the given resource id.
501 cs_alloc_port(device_t dev, int rid, int size)
503 struct cs_softc *sc = device_get_softc(dev);
504 struct resource *res;
506 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
507 0ul, ~0ul, size, RF_ACTIVE);
511 sc->port_used = size;
519 * Allocate a memory resource with the given resource id.
522 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);
540 * Allocate an irq resource with the given resource id.
543 cs_alloc_irq(device_t dev, int rid, int flags)
545 struct cs_softc *sc = device_get_softc(dev);
546 struct resource *res;
548 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
549 (RF_ACTIVE | flags));
560 * Release all resources
563 cs_release_resources(device_t dev)
565 struct cs_softc *sc = device_get_softc(dev);
568 bus_release_resource(dev, SYS_RES_IOPORT,
569 sc->port_rid, sc->port_res);
573 bus_release_resource(dev, SYS_RES_MEMORY,
574 sc->mem_rid, sc->mem_res);
578 bus_release_resource(dev, SYS_RES_IRQ,
579 sc->irq_rid, sc->irq_res);
585 * Install the interface into kernel networking data structures
588 cs_attach(device_t dev)
590 struct cs_softc *sc = device_get_softc(dev);
591 int media = 0, error;
592 struct ifnet *ifp = &sc->arpcom.ac_if;
595 * Initialize the media structures.
597 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
599 KASSERT(sc->port_used > 0 || sc->mem_used > 0,
600 ("%s: either I/O port or I/O memory should be used",
601 device_get_nameunit(dev)));
602 if (sc->port_used > 0)
603 cs_alloc_port(dev, sc->port_rid, sc->port_used);
604 if (sc->mem_used > 0)
605 cs_alloc_memory(dev, sc->mem_rid, sc->mem_used);
607 error = cs_alloc_irq(dev, sc->irq_rid, 0);
609 device_printf(dev, "Couldn't allocate irq");
616 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
617 ifp->if_start=cs_start;
618 ifp->if_ioctl=cs_ioctl;
619 ifp->if_watchdog=cs_watchdog;
620 ifp->if_init=cs_init;
621 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
622 ifq_set_ready(&ifp->if_snd);
628 ifp->if_linkmib=&sc->mibdata;
629 ifp->if_linkmiblen=sizeof sc->mibdata;
632 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST );
636 * this code still in progress (DMA support)
638 sc->recv_ring=kmalloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_WAITOK);
639 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
640 < (128*1024-CS_DMA_BUFFER_SIZE))
641 sc->recv_ring+=16*1024;
644 sc->buffer=kmalloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_WAITOK);
646 if (sc->adapter_cnf & A_CNF_10B_T) {
647 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
648 if (sc->chip_type != CS8900) {
649 ifmedia_add(&sc->media,
650 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
651 ifmedia_add(&sc->media,
652 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
656 if (sc->adapter_cnf & A_CNF_10B_2)
657 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
659 if (sc->adapter_cnf & A_CNF_AUI)
660 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
662 if (sc->adapter_cnf & A_CNF_MEDIA)
663 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
665 /* Set default media from EEPROM */
666 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
667 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
668 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
669 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
670 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
671 default: device_printf(dev, "adapter has no media\n");
673 ifmedia_set(&sc->media, media);
674 cs_mediaset(sc, media);
676 ether_ifattach(ifp, sc->arpcom.ac_enaddr, NULL);
678 error = bus_setup_intr(dev, sc->irq_res, INTR_NETSAFE,
679 csintr, sc, &sc->irq_handle,
682 device_printf(dev, "Couldn't set up irq");
695 cs_detach(device_t dev)
697 struct cs_softc *sc = device_get_softc(dev);
698 struct ifnet *ifp = &sc->arpcom.ac_if;
700 if (device_is_attached(dev)) {
701 lwkt_serialize_enter(ifp->if_serializer);
703 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
704 lwkt_serialize_exit(ifp->if_serializer);
706 ether_ifdetach(&sc->arpcom.ac_if);
711 * this code still in progress (DMA support)
713 if (sc->recv_ring != NULL)
714 kfree(sc->recv_ring, M_DEVBUF);
717 if (sc->buffer != NULL)
718 kfree(sc->buffer, M_DEVBUF);
719 cs_release_resources(dev);
720 ifmedia_removeall(&sc->media);
726 * Initialize the board
731 struct cs_softc *sc=(struct cs_softc *)xsc;
732 struct ifnet *ifp = &sc->arpcom.ac_if;
736 * reset whatchdog timer
742 * Hardware initialization of cs
745 /* Enable receiver and transmitter */
746 cs_writereg(sc->nic_addr, PP_LineCTL,
747 cs_readreg( sc->nic_addr, PP_LineCTL ) |
748 SERIAL_RX_ON | SERIAL_TX_ON);
750 /* Configure the receiver mode */
754 * This defines what type of frames will cause interrupts
755 * Bad frames should generate interrupts so that the driver
756 * could track statistics of discarded packets
758 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
760 if (sc->isa_config & STREAM_TRANSFER)
761 rx_cfg |= RX_STREAM_ENBL;
762 cs_writereg(sc->nic_addr, PP_RxCFG, rx_cfg);
764 cs_writereg(sc->nic_addr, PP_TxCFG, TX_LOST_CRS_ENBL |
765 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
766 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
768 cs_writereg(sc->nic_addr, PP_BufCFG, READY_FOR_TX_ENBL |
769 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
770 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
772 /* Write MAC address into IA filter */
773 for (i=0; i<ETHER_ADDR_LEN/2; i++)
774 cs_writereg(sc->nic_addr, PP_IA+i*2,
775 sc->arpcom.ac_enaddr[i*2] |
776 (sc->arpcom.ac_enaddr[i*2+1] << 8) );
779 * Now enable everything
782 #ifdef CS_USE_64K_DMA
783 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
786 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
789 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
792 * Set running and clear output active flags
794 sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
795 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
798 * Start sending process
804 * Get the packet from the board and send it to the upper layer
808 cs_get_packet(struct cs_softc *sc)
810 struct ifnet *ifp = &(sc->arpcom.ac_if);
811 int iobase = sc->nic_addr, status, length;
818 status = inw(iobase + RX_FRAME_PORT);
819 length = inw(iobase + RX_FRAME_PORT);
822 if_printf(ifp, "rcvd: stat %x, len %d\n", status, length);
825 if (!(status & RX_OK)) {
827 if_printf(ifp, "bad pkt stat %x\n", status);
833 MGETHDR(m, MB_DONTWAIT, MT_DATA);
837 if (length > MHLEN) {
838 MCLGET(m, MB_DONTWAIT);
839 if (!(m->m_flags & M_EXT)) {
845 /* Initialize packet's header info */
846 m->m_pkthdr.rcvif = ifp;
847 m->m_pkthdr.len = length;
851 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
854 for (i=0;i<length;i++)
855 kprintf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
859 if (status & (RX_IA | RX_BROADCAST) ||
860 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
861 ifp->if_input(ifp, m);
865 if (length==ETHER_MAX_LEN-ETHER_CRC_LEN)
866 DELAY( cs_recv_delay );
880 struct cs_softc *sc = (struct cs_softc*) arg;
881 struct ifnet *ifp = &(sc->arpcom.ac_if);
885 if_printf(ifp, "Interrupt.\n");
888 while ((status=cs_readword(sc->nic_addr, ISQ_PORT))) {
891 if_printf(ifp, "from ISQ: %04x\n", status);
894 switch (status & ISQ_EVENT_MASK) {
895 case ISQ_RECEIVER_EVENT:
899 case ISQ_TRANSMITTER_EVENT:
904 ifp->if_flags &= ~IFF_OACTIVE;
908 case ISQ_BUFFER_EVENT:
909 if (status & READY_FOR_TX) {
910 ifp->if_flags &= ~IFF_OACTIVE;
914 if (status & TX_UNDERRUN) {
915 ifp->if_flags &= ~IFF_OACTIVE;
921 case ISQ_RX_MISS_EVENT:
922 ifp->if_ierrors+=(status>>6);
925 case ISQ_TX_COL_EVENT:
926 ifp->if_collisions+=(status>>6);
931 if (!(ifp->if_flags & IFF_OACTIVE)) {
937 * Save the data in buffer
941 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
945 unsigned char *data, *buf;
947 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
957 * Find actual data address
959 data = mtod(mp, caddr_t);
961 bcopy((caddr_t) data, (caddr_t) buf, len);
969 cs_xmit_buf( struct cs_softc *sc )
971 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
976 cs_start(struct ifnet *ifp)
980 struct cs_softc *sc = ifp->if_softc;
984 length = sc->buf_len;
986 m = ifq_dequeue(&ifp->if_snd, NULL);
992 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
995 /* Skip zero-length packets */
1001 cs_write_mbufs(sc, m);
1009 * Issue a SEND command
1011 outw(sc->nic_addr+TX_CMD_PORT, sc->send_cmd);
1012 outw(sc->nic_addr+TX_LEN_PORT, length );
1015 * If there's no free space in the buffer then leave
1016 * this packet for the next time: indicate output active
1019 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
1020 ifp->if_timer = sc->buf_len;
1021 ifp->if_flags |= IFF_OACTIVE;
1028 * Set the watchdog timer in case we never hear
1029 * from board again. (I don't know about correct
1030 * value for this timeout)
1032 ifp->if_timer = length;
1034 ifp->if_flags |= IFF_OACTIVE;
1040 * Stop everything on the interface
1043 cs_stop(struct cs_softc *sc)
1045 cs_writereg(sc->nic_addr, PP_RxCFG, 0);
1046 cs_writereg(sc->nic_addr, PP_TxCFG, 0);
1047 cs_writereg(sc->nic_addr, PP_BufCFG, 0);
1048 cs_writereg(sc->nic_addr, PP_BusCTL, 0);
1050 sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1051 sc->arpcom.ac_if.if_timer = 0;
1055 * Reset the interface
1058 cs_reset(struct cs_softc *sc)
1065 cs_setmode(struct cs_softc *sc)
1067 struct ifnet *ifp = &(sc->arpcom.ac_if);
1070 /* Stop the receiver while changing filters */
1071 cs_writereg(sc->nic_addr, PP_LineCTL,
1072 cs_readreg(sc->nic_addr, PP_LineCTL) & ~SERIAL_RX_ON);
1074 if (ifp->if_flags & IFF_PROMISC) {
1075 /* Turn on promiscuous mode. */
1076 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1078 if (ifp->if_flags & IFF_MULTICAST) {
1079 /* Allow receiving frames with multicast addresses */
1080 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1081 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1083 * Here the reconfiguration of chip's multicast
1084 * filters should be done but I've no idea about
1085 * hash transformation in this chip. If you can
1086 * add this code or describe me the transformation
1091 * Receive only good frames addressed for us and
1094 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1099 /* Set up the filter */
1100 cs_writereg(sc->nic_addr, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1102 /* Turn on receiver */
1103 cs_writereg(sc->nic_addr, PP_LineCTL,
1104 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_RX_ON);
1108 cs_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
1110 struct cs_softc *sc=ifp->if_softc;
1111 struct ifreq *ifr = (struct ifreq *)data;
1115 if_printf(ifp, "ioctl(%lx)\n", command);
1121 * Switch interface state between "running" and
1122 * "stopped", reflecting the UP flag.
1124 if (sc->arpcom.ac_if.if_flags & IFF_UP) {
1125 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) {
1129 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) {
1134 * Promiscuous and/or multicast flags may have changed,
1135 * so reprogram the multicast filter and/or receive mode.
1137 * See note about multicasts in cs_setmode
1145 * Multicast list has changed; set the hardware filter
1148 * See note about multicasts in cs_setmode
1156 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1159 error = ether_ioctl(ifp, command, data);
1167 * Device timeout/watchdog routine. Entered if the device neglects to
1168 * generate an interrupt after a transmit has been started on it.
1171 cs_watchdog(struct ifnet *ifp)
1173 struct cs_softc *sc = ifp->if_softc;
1176 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1178 /* Reset the interface */
1179 if (ifp->if_flags & IFF_UP)
1186 cs_mediachange(struct ifnet *ifp)
1188 struct cs_softc *sc = ifp->if_softc;
1189 struct ifmedia *ifm = &sc->media;
1191 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1194 return cs_mediaset(sc, ifm->ifm_media);
1198 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1201 struct cs_softc *sc = ifp->if_softc;
1203 ifmr->ifm_active = IFM_ETHER;
1204 line_status = cs_readreg(sc->nic_addr, PP_LineST);
1205 if (line_status & TENBASET_ON) {
1206 ifmr->ifm_active |= IFM_10_T;
1207 if (sc->chip_type != CS8900) {
1208 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & FDX_ACTIVE)
1209 ifmr->ifm_active |= IFM_FDX;
1210 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & HDX_ACTIVE)
1211 ifmr->ifm_active |= IFM_HDX;
1213 ifmr->ifm_status = IFM_AVALID;
1214 if (line_status & LINK_OK)
1215 ifmr->ifm_status |= IFM_ACTIVE;
1217 if (line_status & AUI_ON) {
1218 cs_writereg(sc->nic_addr, PP_SelfCTL,
1219 cs_readreg(sc->nic_addr, PP_SelfCTL) |
1221 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1222 (cs_readreg(sc->nic_addr, PP_SelfCTL)&HCB1))
1223 ifmr->ifm_active |= IFM_10_2;
1225 ifmr->ifm_active |= IFM_10_5;
1231 cs_mediaset(struct cs_softc *sc, int media)
1235 /* Stop the receiver & transmitter */
1236 cs_writereg(sc->nic_addr, PP_LineCTL,
1237 cs_readreg(sc->nic_addr, PP_LineCTL) &
1238 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1241 if_printf(&sc->arpcom.ac_if, "cs_setmedia(%x)\n", media);
1244 switch (IFM_SUBTYPE(media)) {
1247 if ((error=enable_tp(sc))==0)
1248 error = cs_duplex_auto(sc);
1249 else if ((error=enable_bnc(sc)) != 0)
1250 error = enable_aui(sc);
1253 if ((error=enable_tp(sc)) != 0)
1255 if (media & IFM_FDX)
1257 else if (media & IFM_HDX)
1260 error = cs_duplex_auto(sc);
1263 error = enable_bnc(sc);
1266 error = enable_aui(sc);
1271 * Turn the transmitter & receiver back on
1273 cs_writereg(sc->nic_addr, PP_LineCTL,
1274 cs_readreg( sc->nic_addr, PP_LineCTL ) |
1275 SERIAL_RX_ON | SERIAL_TX_ON);