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 1.30 2008/08/17 04:32:33 sephe 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/interrupt.h>
43 #include <sys/malloc.h>
45 #include <sys/socket.h>
46 #include <sys/sockio.h>
47 #include <sys/kernel.h>
48 #include <sys/sysctl.h>
49 #include <sys/syslog.h>
50 #include <sys/module.h>
53 #include <sys/thread2.h>
55 #include <machine/clock.h>
58 #include <net/ifq_var.h>
59 #include <net/if_arp.h>
60 #include <net/if_media.h>
61 #include <net/ethernet.h>
68 #define CS_DMA_BUFFER_SIZE 65536
70 #define CS_DMA_BUFFER_SIZE 16384
73 static int cs_recv_delay = 570;
74 SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, "");
76 static void cs_init(void *);
77 static int cs_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
78 static void cs_start(struct ifnet *);
79 static void cs_stop(struct cs_softc *);
80 static void cs_reset(struct cs_softc *);
81 static void cs_watchdog(struct ifnet *);
82 static void csintr(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(device_t, int, int, int *);
94 static int get_eeprom_cksum(int, int, int *);
95 static int wait_eeprom_ready( struct cs_softc *);
96 static void control_dc_dc(struct cs_softc *, int );
97 static int send_test_pkt(struct cs_softc * );
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;
105 DECLARE_DUMMY_MODULE(if_cs);
108 get_eeprom_data(device_t dev, int off, int len, int *buffer)
113 sc = device_get_softc(dev);
116 device_printf(dev, "EEPROM data from %x for %x:\n", off, len);
119 for (i=0;i<len;i++) {
120 if (wait_eeprom_ready(sc) < 0) return -1;
121 /* Send command to EEPROM to read */
122 cs_writereg(sc->nic_addr, PP_EECMD, (off+i)|EEPROM_READ_CMD );
123 if (wait_eeprom_ready(sc)<0)
125 buffer[i] = cs_readreg (sc->nic_addr, PP_EEData);
128 kprintf("%02x %02x ",(unsigned char)buffer[i],
129 (unsigned char)buffer[i+1]);
141 get_eeprom_cksum(int off, int len, int *buffer)
154 wait_eeprom_ready(struct cs_softc *sc)
156 DELAY ( 30000 ); /* XXX should we do some checks here ? */
161 control_dc_dc(struct cs_softc *sc, int on_not_off)
163 unsigned int self_control = HCB1_ENBL;
165 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
166 self_control |= HCB1;
168 self_control &= ~HCB1;
169 cs_writereg( sc->nic_addr, PP_SelfCTL, self_control );
176 cs_duplex_auto(struct cs_softc *sc)
180 cs_writereg(sc->nic_addr, PP_AutoNegCTL,
181 RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE );
182 for (i=0; cs_readreg(sc->nic_addr,PP_AutoNegST)&AUTO_NEG_BUSY; i++) {
184 if_printf(&sc->arpcom.ac_if, "full/half duplex "
185 "auto negotiation timeout\n");
196 enable_tp(struct cs_softc *sc)
198 cs_writereg(sc->nic_addr, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
199 control_dc_dc(sc, 0);
202 if ((cs_readreg(sc->nic_addr, PP_LineST) & LINK_OK)==0) {
203 if_printf(&sc->arpcom.ac_if, "failed to enable TP\n");
211 * XXX This was rewritten from Linux driver without any tests.
214 send_test_pkt(struct cs_softc *sc)
216 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
217 0, 46, /* A 46 in network order */
218 0, 0, /* DSAP=0 & SSAP=0 fields */
219 0xf3, 0 /* Control (Test Req + P bit set) */ };
221 u_char ether_address_backup[ETHER_ADDR_LEN];
223 for (i = 0; i < ETHER_ADDR_LEN; i++) {
224 ether_address_backup[i] = sc->arpcom.ac_enaddr[i];
227 cs_writereg(sc->nic_addr, PP_LineCTL,
228 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_TX_ON );
230 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
231 bcopy(test_packet+ETHER_ADDR_LEN,
232 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
233 outw(sc->nic_addr + TX_CMD_PORT, sc->send_cmd);
234 outw(sc->nic_addr + TX_LEN_PORT, sizeof(test_packet));
236 /* Wait for chip to allocate memory */
238 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
239 for (i = 0; i < ETHER_ADDR_LEN; i++) {
240 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
245 outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
249 if ((cs_readreg(sc->nic_addr,PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
250 for (i = 0; i < ETHER_ADDR_LEN; i++) {
251 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
255 for (i = 0; i < ETHER_ADDR_LEN; i++) {
256 sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
262 * XXX This was rewritten from Linux driver without any tests.
265 enable_aui(struct cs_softc *sc)
267 control_dc_dc(sc, 0);
268 cs_writereg(sc->nic_addr, PP_LineCTL,
269 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
271 if (!send_test_pkt(sc)) {
272 if_printf(&sc->arpcom.ac_if, "failed to enable AUI\n");
279 * XXX This was rewritten from Linux driver without any tests.
282 enable_bnc(struct cs_softc *sc)
284 control_dc_dc(sc, 1);
285 cs_writereg(sc->nic_addr, PP_LineCTL,
286 (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
288 if (!send_test_pkt(sc)) {
289 if_printf(&sc->arpcom.ac_if, "failed to enable BNC\n");
296 cs_cs89x0_probe(device_t dev)
304 struct cs_softc *sc = device_get_softc(dev);
306 unsigned rev_type = 0;
308 int eeprom_buff[CHKSUM_LEN];
309 int chip_type, pp_isaint, pp_isadma;
311 error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
315 iobase=rman_get_start(sc->port_res);
317 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG) {
318 /* Chip not detected. Let's try to reset it */
320 device_printf(dev, "trying to reset the chip.\n");
321 outw(iobase+ADD_PORT, PP_SelfCTL);
322 i = inw(iobase+DATA_PORT);
323 outw(iobase+ADD_PORT, PP_SelfCTL);
324 outw(iobase+DATA_PORT, i | POWER_ON_RESET);
325 if ((inw(iobase+ADD_PORT) & ADD_MASK) != ADD_SIG)
329 outw(iobase+ADD_PORT, PP_ChipID);
330 if (inw(iobase+DATA_PORT) != CHIP_EISA_ID_SIG)
333 rev_type = cs_readreg(iobase, PRODUCT_ID_ADD);
334 chip_type = rev_type & ~REVISON_BITS;
335 chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
337 sc->nic_addr = iobase;
338 sc->chip_type = chip_type;
340 if(chip_type==CS8900) {
341 pp_isaint = PP_CS8900_ISAINT;
342 pp_isadma = PP_CS8900_ISADMA;
343 sc->send_cmd = TX_CS8900_AFTER_ALL;
345 pp_isaint = PP_CS8920_ISAINT;
346 pp_isadma = PP_CS8920_ISADMA;
347 sc->send_cmd = TX_CS8920_AFTER_ALL;
351 * Clear some fields so that fail of EEPROM will left them clean
353 sc->auto_neg_cnf = 0;
358 * If no interrupt specified (or "?"), use what the board tells us.
360 error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
363 * Get data from EEPROM
365 if((cs_readreg(iobase, PP_SelfST) & EEPROM_PRESENT) == 0) {
366 device_printf(dev, "No EEPROM, assuming defaults.\n");
368 if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN,
370 device_printf(dev, "EEPROM read failed, "
371 "assuming defaults.\n");
373 if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
374 device_printf(dev, "EEPROM cheksum bad, "
375 "assuming defaults.\n");
378 eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
380 eeprom_buff[ADAPTER_CNF_OFFSET/2];
382 eeprom_buff[ISA_CNF_OFFSET/2];
384 for (i=0; i<ETHER_ADDR_LEN/2; i++) {
385 sc->arpcom.ac_enaddr[i*2]=
387 sc->arpcom.ac_enaddr[i*2+1]=
392 * If no interrupt specified (or "?"),
393 * use what the board tells us.
396 irq = sc->isa_config & INT_NO_MASK;
397 if (chip_type==CS8900) {
416 device_printf(dev, "invalid irq in EEPROM.\n");
420 if (irq>CS8920_NO_INTS) {
421 device_printf(dev, "invalid irq in EEPROM.\n");
429 bus_set_resource(dev, SYS_RES_IRQ, 0,
437 if (chip_type == CS8900) {
455 if (irq > CS8920_NO_INTS) {
462 cs_writereg(iobase, pp_isaint, irq);
464 device_printf(dev, "Unknown or invalid irq\n");
472 cs_writereg(iobase, pp_isadma, drq);
474 device_printf(dev, "incorrect drq\n");
480 device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
481 chip_type==CS8900 ? '0' : '2',
482 chip_type==CS8920M ? "M" : "",
484 (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
485 (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
486 (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
488 if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
489 (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
490 sc->line_ctl = LOW_RX_SQUELCH;
499 * Allocate a port resource with the given resource id.
502 cs_alloc_port(device_t dev, int rid, int size)
504 struct cs_softc *sc = device_get_softc(dev);
505 struct resource *res;
507 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
508 0ul, ~0ul, size, RF_ACTIVE);
512 sc->port_used = size;
520 * Allocate a memory resource with the given resource id.
523 cs_alloc_memory(device_t dev, int rid, int size)
525 struct cs_softc *sc = device_get_softc(dev);
526 struct resource *res;
528 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
529 0ul, ~0ul, size, RF_ACTIVE);
541 * Allocate an irq resource with the given resource id.
544 cs_alloc_irq(device_t dev, int rid, int flags)
546 struct cs_softc *sc = device_get_softc(dev);
547 struct resource *res;
549 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
550 (RF_ACTIVE | flags));
561 * Release all resources
564 cs_release_resources(device_t dev)
566 struct cs_softc *sc = device_get_softc(dev);
569 bus_release_resource(dev, SYS_RES_IOPORT,
570 sc->port_rid, sc->port_res);
574 bus_release_resource(dev, SYS_RES_MEMORY,
575 sc->mem_rid, sc->mem_res);
579 bus_release_resource(dev, SYS_RES_IRQ,
580 sc->irq_rid, sc->irq_res);
586 * Install the interface into kernel networking data structures
589 cs_attach(device_t dev)
591 struct cs_softc *sc = device_get_softc(dev);
592 int media = 0, error;
593 struct ifnet *ifp = &sc->arpcom.ac_if;
596 * Initialize the media structures.
598 ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
600 KASSERT(sc->port_used > 0 || sc->mem_used > 0,
601 ("%s: either I/O port or I/O memory should be used",
602 device_get_nameunit(dev)));
603 if (sc->port_used > 0)
604 cs_alloc_port(dev, sc->port_rid, sc->port_used);
605 if (sc->mem_used > 0)
606 cs_alloc_memory(dev, sc->mem_rid, sc->mem_used);
608 error = cs_alloc_irq(dev, sc->irq_rid, 0);
610 device_printf(dev, "Couldn't allocate irq");
617 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
618 ifp->if_start=cs_start;
619 ifp->if_ioctl=cs_ioctl;
620 ifp->if_watchdog=cs_watchdog;
621 ifp->if_init=cs_init;
622 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
623 ifq_set_ready(&ifp->if_snd);
629 ifp->if_linkmib=&sc->mibdata;
630 ifp->if_linkmiblen=sizeof sc->mibdata;
633 ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST );
637 * this code still in progress (DMA support)
639 sc->recv_ring=kmalloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_WAITOK);
640 if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
641 < (128*1024-CS_DMA_BUFFER_SIZE))
642 sc->recv_ring+=16*1024;
645 sc->buffer=kmalloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_WAITOK);
647 if (sc->adapter_cnf & A_CNF_10B_T) {
648 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
649 if (sc->chip_type != CS8900) {
650 ifmedia_add(&sc->media,
651 IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
652 ifmedia_add(&sc->media,
653 IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
657 if (sc->adapter_cnf & A_CNF_10B_2)
658 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
660 if (sc->adapter_cnf & A_CNF_AUI)
661 ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
663 if (sc->adapter_cnf & A_CNF_MEDIA)
664 ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
666 /* Set default media from EEPROM */
667 switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
668 case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
669 case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
670 case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
671 case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
672 default: device_printf(dev, "adapter has no media\n");
674 ifmedia_set(&sc->media, media);
675 cs_mediaset(sc, media);
677 ether_ifattach(ifp, sc->arpcom.ac_enaddr, NULL);
679 error = bus_setup_intr(dev, sc->irq_res, INTR_MPSAFE,
680 csintr, sc, &sc->irq_handle,
683 device_printf(dev, "Couldn't set up irq");
688 ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->irq_res));
689 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
699 cs_detach(device_t dev)
701 struct cs_softc *sc = device_get_softc(dev);
702 struct ifnet *ifp = &sc->arpcom.ac_if;
704 if (device_is_attached(dev)) {
705 lwkt_serialize_enter(ifp->if_serializer);
707 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
708 lwkt_serialize_exit(ifp->if_serializer);
710 ether_ifdetach(&sc->arpcom.ac_if);
715 * this code still in progress (DMA support)
717 if (sc->recv_ring != NULL)
718 kfree(sc->recv_ring, M_DEVBUF);
721 if (sc->buffer != NULL)
722 kfree(sc->buffer, M_DEVBUF);
723 cs_release_resources(dev);
724 ifmedia_removeall(&sc->media);
730 * Initialize the board
735 struct cs_softc *sc=(struct cs_softc *)xsc;
736 struct ifnet *ifp = &sc->arpcom.ac_if;
740 * reset whatchdog timer
746 * Hardware initialization of cs
749 /* Enable receiver and transmitter */
750 cs_writereg(sc->nic_addr, PP_LineCTL,
751 cs_readreg( sc->nic_addr, PP_LineCTL ) |
752 SERIAL_RX_ON | SERIAL_TX_ON);
754 /* Configure the receiver mode */
758 * This defines what type of frames will cause interrupts
759 * Bad frames should generate interrupts so that the driver
760 * could track statistics of discarded packets
762 rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
764 if (sc->isa_config & STREAM_TRANSFER)
765 rx_cfg |= RX_STREAM_ENBL;
766 cs_writereg(sc->nic_addr, PP_RxCFG, rx_cfg);
768 cs_writereg(sc->nic_addr, PP_TxCFG, TX_LOST_CRS_ENBL |
769 TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
770 TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
772 cs_writereg(sc->nic_addr, PP_BufCFG, READY_FOR_TX_ENBL |
773 RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
774 TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
776 /* Write MAC address into IA filter */
777 for (i=0; i<ETHER_ADDR_LEN/2; i++)
778 cs_writereg(sc->nic_addr, PP_IA+i*2,
779 sc->arpcom.ac_enaddr[i*2] |
780 (sc->arpcom.ac_enaddr[i*2+1] << 8) );
783 * Now enable everything
786 #ifdef CS_USE_64K_DMA
787 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
790 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
793 cs_writereg(sc->nic_addr, PP_BusCTL, ENABLE_IRQ);
796 * Set running and clear output active flags
798 sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
799 sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
802 * Start sending process
804 if_devstart(&sc->arpcom.ac_if);
808 * Get the packet from the board and send it to the upper layer
812 cs_get_packet(struct cs_softc *sc)
814 struct ifnet *ifp = &(sc->arpcom.ac_if);
815 int iobase = sc->nic_addr, status, length;
822 status = inw(iobase + RX_FRAME_PORT);
823 length = inw(iobase + RX_FRAME_PORT);
826 if_printf(ifp, "rcvd: stat %x, len %d\n", status, length);
829 if (!(status & RX_OK)) {
831 if_printf(ifp, "bad pkt stat %x\n", status);
837 MGETHDR(m, MB_DONTWAIT, MT_DATA);
841 if (length > MHLEN) {
842 MCLGET(m, MB_DONTWAIT);
843 if (!(m->m_flags & M_EXT)) {
849 /* Initialize packet's header info */
850 m->m_pkthdr.rcvif = ifp;
851 m->m_pkthdr.len = length;
855 insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
858 for (i=0;i<length;i++)
859 kprintf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
863 if (status & (RX_IA | RX_BROADCAST) ||
864 (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
865 ifp->if_input(ifp, m);
869 if (length==ETHER_MAX_LEN-ETHER_CRC_LEN)
870 DELAY( cs_recv_delay );
884 struct cs_softc *sc = (struct cs_softc*) arg;
885 struct ifnet *ifp = &(sc->arpcom.ac_if);
889 if_printf(ifp, "Interrupt.\n");
892 while ((status=cs_readword(sc->nic_addr, ISQ_PORT))) {
895 if_printf(ifp, "from ISQ: %04x\n", status);
898 switch (status & ISQ_EVENT_MASK) {
899 case ISQ_RECEIVER_EVENT:
903 case ISQ_TRANSMITTER_EVENT:
908 ifp->if_flags &= ~IFF_OACTIVE;
912 case ISQ_BUFFER_EVENT:
913 if (status & READY_FOR_TX) {
914 ifp->if_flags &= ~IFF_OACTIVE;
918 if (status & TX_UNDERRUN) {
919 ifp->if_flags &= ~IFF_OACTIVE;
925 case ISQ_RX_MISS_EVENT:
926 ifp->if_ierrors+=(status>>6);
929 case ISQ_TX_COL_EVENT:
930 ifp->if_collisions+=(status>>6);
935 if (!(ifp->if_flags & IFF_OACTIVE))
940 * Save the data in buffer
944 cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
948 unsigned char *data, *buf;
950 for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
960 * Find actual data address
962 data = mtod(mp, caddr_t);
964 bcopy((caddr_t) data, (caddr_t) buf, len);
972 cs_xmit_buf( struct cs_softc *sc )
974 outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
979 cs_start(struct ifnet *ifp)
983 struct cs_softc *sc = ifp->if_softc;
987 length = sc->buf_len;
989 m = ifq_dequeue(&ifp->if_snd, NULL);
995 for (length=0, mp=m; mp != NULL; mp=mp->m_next)
998 /* Skip zero-length packets */
1004 cs_write_mbufs(sc, m);
1012 * Issue a SEND command
1014 outw(sc->nic_addr+TX_CMD_PORT, sc->send_cmd);
1015 outw(sc->nic_addr+TX_LEN_PORT, length );
1018 * If there's no free space in the buffer then leave
1019 * this packet for the next time: indicate output active
1022 if (!(cs_readreg(sc->nic_addr, PP_BusST) & READY_FOR_TX_NOW)) {
1023 ifp->if_timer = sc->buf_len;
1024 ifp->if_flags |= IFF_OACTIVE;
1031 * Set the watchdog timer in case we never hear
1032 * from board again. (I don't know about correct
1033 * value for this timeout)
1035 ifp->if_timer = length;
1037 ifp->if_flags |= IFF_OACTIVE;
1043 * Stop everything on the interface
1046 cs_stop(struct cs_softc *sc)
1048 cs_writereg(sc->nic_addr, PP_RxCFG, 0);
1049 cs_writereg(sc->nic_addr, PP_TxCFG, 0);
1050 cs_writereg(sc->nic_addr, PP_BufCFG, 0);
1051 cs_writereg(sc->nic_addr, PP_BusCTL, 0);
1053 sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1054 sc->arpcom.ac_if.if_timer = 0;
1058 * Reset the interface
1061 cs_reset(struct cs_softc *sc)
1068 cs_setmode(struct cs_softc *sc)
1070 struct ifnet *ifp = &(sc->arpcom.ac_if);
1073 /* Stop the receiver while changing filters */
1074 cs_writereg(sc->nic_addr, PP_LineCTL,
1075 cs_readreg(sc->nic_addr, PP_LineCTL) & ~SERIAL_RX_ON);
1077 if (ifp->if_flags & IFF_PROMISC) {
1078 /* Turn on promiscuous mode. */
1079 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1081 if (ifp->if_flags & IFF_MULTICAST) {
1082 /* Allow receiving frames with multicast addresses */
1083 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1084 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1086 * Here the reconfiguration of chip's multicast
1087 * filters should be done but I've no idea about
1088 * hash transformation in this chip. If you can
1089 * add this code or describe me the transformation
1094 * Receive only good frames addressed for us and
1097 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1102 /* Set up the filter */
1103 cs_writereg(sc->nic_addr, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1105 /* Turn on receiver */
1106 cs_writereg(sc->nic_addr, PP_LineCTL,
1107 cs_readreg(sc->nic_addr, PP_LineCTL) | SERIAL_RX_ON);
1111 cs_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
1113 struct cs_softc *sc=ifp->if_softc;
1114 struct ifreq *ifr = (struct ifreq *)data;
1118 if_printf(ifp, "ioctl(%lx)\n", command);
1124 * Switch interface state between "running" and
1125 * "stopped", reflecting the UP flag.
1127 if (sc->arpcom.ac_if.if_flags & IFF_UP) {
1128 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) {
1132 if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) {
1137 * Promiscuous and/or multicast flags may have changed,
1138 * so reprogram the multicast filter and/or receive mode.
1140 * See note about multicasts in cs_setmode
1148 * Multicast list has changed; set the hardware filter
1151 * See note about multicasts in cs_setmode
1159 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
1162 error = ether_ioctl(ifp, command, data);
1170 * Device timeout/watchdog routine. Entered if the device neglects to
1171 * generate an interrupt after a transmit has been started on it.
1174 cs_watchdog(struct ifnet *ifp)
1176 struct cs_softc *sc = ifp->if_softc;
1179 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
1181 /* Reset the interface */
1182 if (ifp->if_flags & IFF_UP)
1189 cs_mediachange(struct ifnet *ifp)
1191 struct cs_softc *sc = ifp->if_softc;
1192 struct ifmedia *ifm = &sc->media;
1194 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1197 return cs_mediaset(sc, ifm->ifm_media);
1201 cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
1204 struct cs_softc *sc = ifp->if_softc;
1206 ifmr->ifm_active = IFM_ETHER;
1207 line_status = cs_readreg(sc->nic_addr, PP_LineST);
1208 if (line_status & TENBASET_ON) {
1209 ifmr->ifm_active |= IFM_10_T;
1210 if (sc->chip_type != CS8900) {
1211 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & FDX_ACTIVE)
1212 ifmr->ifm_active |= IFM_FDX;
1213 if (cs_readreg(sc->nic_addr, PP_AutoNegST) & HDX_ACTIVE)
1214 ifmr->ifm_active |= IFM_HDX;
1216 ifmr->ifm_status = IFM_AVALID;
1217 if (line_status & LINK_OK)
1218 ifmr->ifm_status |= IFM_ACTIVE;
1220 if (line_status & AUI_ON) {
1221 cs_writereg(sc->nic_addr, PP_SelfCTL,
1222 cs_readreg(sc->nic_addr, PP_SelfCTL) |
1224 if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
1225 (cs_readreg(sc->nic_addr, PP_SelfCTL)&HCB1))
1226 ifmr->ifm_active |= IFM_10_2;
1228 ifmr->ifm_active |= IFM_10_5;
1234 cs_mediaset(struct cs_softc *sc, int media)
1238 /* Stop the receiver & transmitter */
1239 cs_writereg(sc->nic_addr, PP_LineCTL,
1240 cs_readreg(sc->nic_addr, PP_LineCTL) &
1241 ~(SERIAL_RX_ON | SERIAL_TX_ON));
1244 if_printf(&sc->arpcom.ac_if, "cs_setmedia(%x)\n", media);
1247 switch (IFM_SUBTYPE(media)) {
1250 if ((error=enable_tp(sc))==0)
1251 error = cs_duplex_auto(sc);
1252 else if ((error=enable_bnc(sc)) != 0)
1253 error = enable_aui(sc);
1256 if ((error=enable_tp(sc)) != 0)
1258 if (media & IFM_FDX)
1260 else if (media & IFM_HDX)
1263 error = cs_duplex_auto(sc);
1266 error = enable_bnc(sc);
1269 error = enable_aui(sc);
1274 * Turn the transmitter & receiver back on
1276 cs_writereg(sc->nic_addr, PP_LineCTL,
1277 cs_readreg( sc->nic_addr, PP_LineCTL ) |
1278 SERIAL_RX_ON | SERIAL_TX_ON);