2 * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved.
3 * Author: Denis I.Timofeev <timofeev@granch.ru>
5 * Redistributon 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 NEIGENCE 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("$FreeBSD$");
33 * Device driver for Granch SBNI12 leased line adapters
35 * Revision 2.0.0 1997/08/06
36 * Initial revision by Alexey Zverev
38 * Revision 2.0.1 1997/08/11
39 * Additional internal statistics support (tx statistics)
41 * Revision 2.0.2 1997/11/05
42 * if_bpf bug has been fixed
44 * Revision 2.0.3 1998/12/20
45 * Memory leakage has been eliminated in
46 * the sbni_st and sbni_timeout routines.
48 * Revision 3.0 2000/08/10 by Yaroslav Polyakov
49 * Support for PCI cards. 4.1 modification.
51 * Revision 3.1 2000/09/12
52 * Removed extra #defines around bpf functions
54 * Revision 4.0 2000/11/23 by Denis Timofeev
55 * Completely redesigned the buffer management
57 * Revision 4.1 2001/01/21
58 * Support for PCI Dual cards and new SBNI12D-10, -11 Dual/ISA cards
60 * Written with reference to NE2000 driver developed by David Greenman.
64 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/socket.h>
68 #include <sys/sockio.h>
70 #include <sys/kernel.h>
73 #include <sys/callout.h>
74 #include <sys/syslog.h>
75 #include <sys/random.h>
77 #include <machine/bus.h>
79 #include <machine/resource.h>
82 #include <net/if_var.h>
83 #include <net/if_dl.h>
84 #include <net/ethernet.h>
86 #include <net/if_types.h>
88 #include <dev/sbni/if_sbnireg.h>
89 #include <dev/sbni/if_sbnivar.h>
91 static void sbni_init(void *);
92 static void sbni_init_locked(struct sbni_softc *);
93 static void sbni_start(struct ifnet *);
94 static void sbni_start_locked(struct ifnet *);
95 static int sbni_ioctl(struct ifnet *, u_long, caddr_t);
96 static void sbni_stop(struct sbni_softc *);
97 static void handle_channel(struct sbni_softc *);
99 static void card_start(struct sbni_softc *);
100 static int recv_frame(struct sbni_softc *);
101 static void send_frame(struct sbni_softc *);
102 static int upload_data(struct sbni_softc *, u_int, u_int, u_int, u_int32_t);
103 static int skip_tail(struct sbni_softc *, u_int, u_int32_t);
104 static void interpret_ack(struct sbni_softc *, u_int);
105 static void download_data(struct sbni_softc *, u_int32_t *);
106 static void prepare_to_send(struct sbni_softc *);
107 static void drop_xmit_queue(struct sbni_softc *);
108 static int get_rx_buf(struct sbni_softc *);
109 static void indicate_pkt(struct sbni_softc *);
110 static void change_level(struct sbni_softc *);
111 static int check_fhdr(struct sbni_softc *, u_int *, u_int *,
112 u_int *, u_int *, u_int32_t *);
113 static int append_frame_to_pkt(struct sbni_softc *, u_int, u_int32_t);
114 static void timeout_change_level(struct sbni_softc *);
115 static void send_frame_header(struct sbni_softc *, u_int32_t *);
116 static void set_initial_values(struct sbni_softc *, struct sbni_flags);
118 static u_int32_t calc_crc32(u_int32_t, caddr_t, u_int);
119 static timeout_t sbni_timeout;
121 static __inline u_char sbni_inb(struct sbni_softc *, enum sbni_reg);
122 static __inline void sbni_outb(struct sbni_softc *, enum sbni_reg, u_char);
123 static __inline void sbni_insb(struct sbni_softc *, u_char *, u_int);
124 static __inline void sbni_outsb(struct sbni_softc *, u_char *, u_int);
126 static u_int32_t crc32tab[];
128 #ifdef SBNI_DUAL_COMPOUND
129 static struct mtx headlist_lock;
130 MTX_SYSINIT(headlist_lock, &headlist_lock, "sbni headlist", MTX_DEF);
131 static struct sbni_softc *sbni_headlist;
134 /* -------------------------------------------------------------------------- */
136 static __inline u_char
137 sbni_inb(struct sbni_softc *sc, enum sbni_reg reg)
139 return bus_space_read_1(
140 rman_get_bustag(sc->io_res),
141 rman_get_bushandle(sc->io_res),
146 sbni_outb(struct sbni_softc *sc, enum sbni_reg reg, u_char value)
149 rman_get_bustag(sc->io_res),
150 rman_get_bushandle(sc->io_res),
151 sc->io_off + reg, value);
155 sbni_insb(struct sbni_softc *sc, u_char *to, u_int len)
157 bus_space_read_multi_1(
158 rman_get_bustag(sc->io_res),
159 rman_get_bushandle(sc->io_res),
160 sc->io_off + DAT, to, len);
164 sbni_outsb(struct sbni_softc *sc, u_char *from, u_int len)
166 bus_space_write_multi_1(
167 rman_get_bustag(sc->io_res),
168 rman_get_bushandle(sc->io_res),
169 sc->io_off + DAT, from, len);
174 Valid combinations in CSR0 (for probing):
176 VALID_DECODER 0000,0011,1011,1010
181 TR_RDY TR_REQ ; 3 ; +
183 BU_EMP TR_REQ ; 5 ; +
184 BU_EMP TR_RDY ; 6 ; -
185 BU_EMP TR_RDY TR_REQ ; 7 ; +
187 RC_RDY TR_REQ ; 9 ; +
188 RC_RDY TR_RDY ; 10 ; -
189 RC_RDY TR_RDY TR_REQ ; 11 ; -
190 RC_RDY BU_EMP ; 12 ; -
191 RC_RDY BU_EMP TR_REQ ; 13 ; -
192 RC_RDY BU_EMP TR_RDY ; 14 ; -
193 RC_RDY BU_EMP TR_RDY TR_REQ ; 15 ; -
196 #define VALID_DECODER (2 + 8 + 0x10 + 0x20 + 0x80 + 0x100 + 0x200)
200 sbni_probe(struct sbni_softc *sc)
204 csr0 = sbni_inb(sc, CSR0);
205 if (csr0 != 0xff && csr0 != 0x00) {
210 if (VALID_DECODER & (1 << (csr0 >> 4)))
219 * Install interface into kernel networking data structures
222 sbni_attach(struct sbni_softc *sc, int unit, struct sbni_flags flags)
227 ifp = sc->ifp = if_alloc(IFT_ETHER);
230 sbni_outb(sc, CSR0, 0);
231 set_initial_values(sc, flags);
233 /* Initialize ifnet structure */
235 if_initname(ifp, "sbni", unit);
236 ifp->if_init = sbni_init;
237 ifp->if_start = sbni_start;
238 ifp->if_ioctl = sbni_ioctl;
239 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
241 /* report real baud rate */
242 csr0 = sbni_inb(sc, CSR0);
244 (csr0 & 0x01 ? 500000 : 2000000) / (1 << flags.rate);
246 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
248 mtx_init(&sc->lock, ifp->if_xname, MTX_NETWORK_LOCK, MTX_DEF);
249 callout_init_mtx(&sc->wch, &sc->lock, 0);
250 ether_ifattach(ifp, sc->enaddr);
251 /* device attach does transition from UNCONFIGURED to IDLE state */
253 if_printf(ifp, "speed %ju, rxl ", (uintmax_t)ifp->if_baudrate);
257 printf("%d (fixed)\n", sc->cur_rxl_index);
262 sbni_detach(struct sbni_softc *sc)
268 callout_drain(&sc->wch);
269 ether_ifdetach(sc->ifp);
271 bus_teardown_intr(sc->dev, sc->irq_res, sc->irq_handle);
272 mtx_destroy(&sc->lock);
277 sbni_release_resources(struct sbni_softc *sc)
281 bus_release_resource(sc->dev, SYS_RES_IRQ, sc->irq_rid,
283 if (sc->io_res && sc->io_off == 0)
284 bus_release_resource(sc->dev, SYS_RES_IOPORT, sc->io_rid,
288 /* -------------------------------------------------------------------------- */
293 struct sbni_softc *sc;
295 sc = (struct sbni_softc *)xsc;
297 sbni_init_locked(sc);
302 sbni_init_locked(struct sbni_softc *sc)
309 * kludge to avoid multiple initialization when more than once
310 * protocols configured
312 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
316 callout_reset(&sc->wch, hz/SBNI_HZ, sbni_timeout, sc);
318 ifp->if_drv_flags |= IFF_DRV_RUNNING;
319 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
321 /* attempt to start output */
322 sbni_start_locked(ifp);
326 sbni_start(struct ifnet *ifp)
328 struct sbni_softc *sc = ifp->if_softc;
331 sbni_start_locked(ifp);
336 sbni_start_locked(struct ifnet *ifp)
338 struct sbni_softc *sc = ifp->if_softc;
340 if (sc->tx_frameno == 0)
346 sbni_stop(struct sbni_softc *sc)
348 sbni_outb(sc, CSR0, 0);
352 m_freem(sc->rx_buf_p);
356 callout_stop(&sc->wch);
357 sc->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
360 /* -------------------------------------------------------------------------- */
362 /* interrupt handler */
365 * SBNI12D-10, -11/ISA boards within "common interrupt" mode could not
366 * be looked as two independent single-channel devices. Every channel seems
367 * as Ethernet interface but interrupt handler must be common. Really, first
368 * channel ("master") driver only registers the handler. In it's struct softc
369 * it has got pointer to "slave" channel's struct softc and handles that's
371 * softc of successfully attached ISA SBNI boards is linked to list.
372 * While next board driver is initialized, it scans this list. If one
373 * has found softc with same irq and ioaddr different by 4 then it assumes
374 * this board to be "master".
380 struct sbni_softc *sc;
383 sc = (struct sbni_softc *)arg;
388 if (sbni_inb(sc, CSR0) & (RC_RDY | TR_RDY)) {
394 /* second channel present */
395 SBNI_LOCK(sc->slave_sc);
396 if (sbni_inb(sc->slave_sc, CSR0) & (RC_RDY | TR_RDY)) {
397 handle_channel(sc->slave_sc);
400 SBNI_UNLOCK(sc->slave_sc);
407 handle_channel(struct sbni_softc *sc)
412 sbni_outb(sc, CSR0, (sbni_inb(sc, CSR0) & ~EN_INT) | TR_REQ);
414 sc->timer_ticks = CHANGE_LEVEL_START_TICKS;
416 csr0 = sbni_inb(sc, CSR0);
417 if ((csr0 & (RC_RDY | TR_RDY)) == 0)
420 req_ans = !(sc->state & FL_PREV_OK);
423 req_ans = recv_frame(sc);
426 * TR_RDY always equals 1 here because we have owned the marker,
427 * and we set TR_REQ when disabled interrupts
429 csr0 = sbni_inb(sc, CSR0);
430 if ((csr0 & TR_RDY) == 0 || (csr0 & RC_RDY) != 0)
431 if_printf(sc->ifp, "internal error!\n");
433 /* if state & FL_NEED_RESEND != 0 then tx_frameno != 0 */
434 if (req_ans || sc->tx_frameno != 0)
437 /* send the marker without any data */
438 sbni_outb(sc, CSR0, sbni_inb(sc, CSR0) & ~TR_REQ);
442 sbni_outb(sc, CSR0, sbni_inb(sc, CSR0) | EN_INT);
447 * Routine returns 1 if it need to acknoweledge received frame.
448 * Empty frame received without errors won't be acknoweledged.
452 recv_frame(struct sbni_softc *sc)
455 u_int framelen, frameno, ack;
456 u_int is_first, frame_ok;
459 if (check_fhdr(sc, &framelen, &frameno, &ack, &is_first, &crc)) {
460 frame_ok = framelen > 4 ?
461 upload_data(sc, framelen, frameno, is_first, crc) :
462 skip_tail(sc, framelen, crc);
464 interpret_ack(sc, ack);
470 sbni_outb(sc, CSR0, sbni_inb(sc, CSR0) ^ CT_ZER);
472 sc->state |= FL_PREV_OK;
474 sc->in_stats.all_rx_number++;
476 sc->state &= ~FL_PREV_OK;
478 sc->in_stats.all_rx_number++;
479 sc->in_stats.bad_rx_number++;
482 return (!frame_ok || framelen > 4);
487 send_frame(struct sbni_softc *sc)
493 if (sc->state & FL_NEED_RESEND) {
495 /* if frame was sended but not ACK'ed - resend it */
496 if (sc->trans_errors) {
498 if (sc->framelen != 0)
499 sc->in_stats.resend_tx_number++;
501 /* cannot xmit with many attempts */
506 sc->trans_errors = TR_ERROR_COUNT;
508 send_frame_header(sc, &crc);
509 sc->state |= FL_NEED_RESEND;
511 * FL_NEED_RESEND will be cleared after ACK, but if empty
512 * frame sended then in prepare_to_send next frame
517 download_data(sc, &crc);
518 sc->in_stats.all_tx_number++;
519 sc->state |= FL_WAIT_ACK;
522 sbni_outsb(sc, (u_char *)&crc, sizeof crc);
525 csr0 = sbni_inb(sc, CSR0);
526 sbni_outb(sc, CSR0, csr0 & ~TR_REQ);
528 if (sc->tx_frameno) {
529 /* next frame exists - request to send */
530 sbni_outb(sc, CSR0, csr0 | TR_REQ);
536 download_data(struct sbni_softc *sc, u_int32_t *crc_p)
540 u_int data_len, pos, slice;
542 data_p = NULL; /* initialized to avoid warn */
545 for (m = sc->tx_buf_p; m != NULL && pos < sc->pktlen; m = m->m_next) {
546 if (pos + m->m_len > sc->outpos) {
547 data_len = m->m_len - (sc->outpos - pos);
548 data_p = mtod(m, caddr_t) + (sc->outpos - pos);
561 slice = min(data_len, sc->framelen - pos);
562 sbni_outsb(sc, data_p, slice);
563 *crc_p = calc_crc32(*crc_p, data_p, slice);
566 if (data_len -= slice)
571 } while (m != NULL && m->m_len == 0);
575 data_p = mtod(m, caddr_t);
579 /* frame too short - zero padding */
581 pos = sc->framelen - pos;
583 sbni_outb(sc, DAT, 0);
584 *crc_p = CRC32(0, *crc_p);
588 } while (pos < sc->framelen);
593 upload_data(struct sbni_softc *sc, u_int framelen, u_int frameno,
594 u_int is_first, u_int32_t crc)
599 sc->wait_frameno = frameno;
603 if (sc->wait_frameno == frameno) {
605 if (sc->inppos + framelen <= ETHER_MAX_LEN) {
606 frame_ok = append_frame_to_pkt(sc, framelen, crc);
609 * if CRC is right but framelen incorrect then transmitter
610 * error was occured... drop entire packet
612 } else if ((frame_ok = skip_tail(sc, framelen, crc)) != 0) {
613 sc->wait_frameno = 0;
615 if_inc_counter(sc->ifp, IFCOUNTER_IERRORS, 1);
616 /* now skip all frames until is_first != 0 */
619 frame_ok = skip_tail(sc, framelen, crc);
621 if (is_first && !frame_ok) {
623 * Frame has been violated, but we have stored
624 * is_first already... Drop entire packet.
626 sc->wait_frameno = 0;
627 if_inc_counter(sc->ifp, IFCOUNTER_IERRORS, 1);
634 static __inline void send_complete(struct sbni_softc *);
637 send_complete(struct sbni_softc *sc)
639 m_freem(sc->tx_buf_p);
641 if_inc_counter(sc->ifp, IFCOUNTER_OPACKETS, 1);
646 interpret_ack(struct sbni_softc *sc, u_int ack)
648 if (ack == FRAME_SENT_OK) {
649 sc->state &= ~FL_NEED_RESEND;
651 if (sc->state & FL_WAIT_ACK) {
652 sc->outpos += sc->framelen;
654 if (--sc->tx_frameno) {
656 sc->maxframe, sc->pktlen - sc->outpos);
664 sc->state &= ~FL_WAIT_ACK;
669 * Glue received frame with previous fragments of packet.
670 * Indicate packet when last frame would be accepted.
674 append_frame_to_pkt(struct sbni_softc *sc, u_int framelen, u_int32_t crc)
678 if (sc->inppos + framelen > ETHER_MAX_LEN)
681 if (!sc->rx_buf_p && !get_rx_buf(sc))
684 p = sc->rx_buf_p->m_data + sc->inppos;
685 sbni_insb(sc, p, framelen);
686 if (calc_crc32(crc, p, framelen) != CRC32_REMAINDER)
689 sc->inppos += framelen - 4;
690 if (--sc->wait_frameno == 0) { /* last frame received */
692 if_inc_counter(sc->ifp, IFCOUNTER_IPACKETS, 1);
700 * Prepare to start output on adapter. Current priority must be set to splimp
701 * before this routine is called.
702 * Transmitter will be actually activated when marker has been accepted.
706 prepare_to_send(struct sbni_softc *sc)
711 /* sc->tx_buf_p == NULL here! */
713 printf("sbni: memory leak!\n");
716 sc->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
719 IF_DEQUEUE(&sc->ifp->if_snd, sc->tx_buf_p);
721 /* nothing to transmit... */
725 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
729 for (len = 0, m = sc->tx_buf_p; m; m = m->m_next)
734 m_freem(sc->tx_buf_p);
737 if (len < SBNI_MIN_LEN)
741 sc->tx_frameno = (len + sc->maxframe - 1) / sc->maxframe;
742 sc->framelen = min(len, sc->maxframe);
744 sbni_outb(sc, CSR0, sbni_inb(sc, CSR0) | TR_REQ);
745 sc->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
746 BPF_MTAP(sc->ifp, sc->tx_buf_p);
751 drop_xmit_queue(struct sbni_softc *sc)
756 m_freem(sc->tx_buf_p);
758 if_inc_counter(sc->ifp, IFCOUNTER_OERRORS, 1);
762 IF_DEQUEUE(&sc->ifp->if_snd, m);
766 if_inc_counter(sc->ifp, IFCOUNTER_OERRORS, 1);
772 sc->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
773 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
778 send_frame_header(struct sbni_softc *sc, u_int32_t *crc_p)
785 len_field = sc->framelen + 6; /* CRC + frameno + reserved */
787 if (sc->state & FL_NEED_RESEND)
788 len_field |= FRAME_RETRY; /* non-first attempt... */
791 len_field |= FRAME_FIRST;
793 len_field |= (sc->state & FL_PREV_OK) ? FRAME_SENT_OK : FRAME_SENT_BAD;
794 sbni_outb(sc, DAT, SBNI_SIG);
796 value = (u_char)len_field;
797 sbni_outb(sc, DAT, value);
798 crc = CRC32(value, crc);
799 value = (u_char)(len_field >> 8);
800 sbni_outb(sc, DAT, value);
801 crc = CRC32(value, crc);
803 sbni_outb(sc, DAT, sc->tx_frameno);
804 crc = CRC32(sc->tx_frameno, crc);
805 sbni_outb(sc, DAT, 0);
812 * if frame tail not needed (incorrect number or received twice),
813 * it won't store, but CRC will be calculated
817 skip_tail(struct sbni_softc *sc, u_int tail_len, u_int32_t crc)
820 crc = CRC32(sbni_inb(sc, DAT), crc);
822 return (crc == CRC32_REMAINDER);
827 check_fhdr(struct sbni_softc *sc, u_int *framelen, u_int *frameno,
828 u_int *ack, u_int *is_first, u_int32_t *crc_p)
834 if (sbni_inb(sc, DAT) != SBNI_SIG)
837 value = sbni_inb(sc, DAT);
838 *framelen = (u_int)value;
839 crc = CRC32(value, crc);
840 value = sbni_inb(sc, DAT);
841 *framelen |= ((u_int)value) << 8;
842 crc = CRC32(value, crc);
844 *ack = *framelen & FRAME_ACK_MASK;
845 *is_first = (*framelen & FRAME_FIRST) != 0;
847 if ((*framelen &= FRAME_LEN_MASK) < 6 || *framelen > SBNI_MAX_FRAME - 3)
850 value = sbni_inb(sc, DAT);
851 *frameno = (u_int)value;
852 crc = CRC32(value, crc);
854 crc = CRC32(sbni_inb(sc, DAT), crc); /* reserved byte */
863 get_rx_buf(struct sbni_softc *sc)
867 MGETHDR(m, M_NOWAIT, MT_DATA);
869 if_printf(sc->ifp, "cannot allocate header mbuf\n");
874 * We always put the received packet in a single buffer -
875 * either with just an mbuf header or in a cluster attached
876 * to the header. The +2 is to compensate for the alignment
879 if (ETHER_MAX_LEN + 2 > MHLEN) {
880 /* Attach an mbuf cluster */
881 if (!(MCLGET(m, M_NOWAIT))) {
886 m->m_pkthdr.len = m->m_len = ETHER_MAX_LEN + 2;
889 * The +2 is to longword align the start of the real packet.
890 * (sizeof ether_header == 14)
891 * This is important for NFS.
900 indicate_pkt(struct sbni_softc *sc)
902 struct ifnet *ifp = sc->ifp;
906 m->m_pkthdr.rcvif = ifp;
907 m->m_pkthdr.len = m->m_len = sc->inppos;
911 (*ifp->if_input)(ifp, m);
915 /* -------------------------------------------------------------------------- */
918 * Routine checks periodically wire activity and regenerates marker if
919 * connect was inactive for a long time.
923 sbni_timeout(void *xsc)
925 struct sbni_softc *sc;
928 sc = (struct sbni_softc *)xsc;
929 SBNI_ASSERT_LOCKED(sc);
931 csr0 = sbni_inb(sc, CSR0);
934 if (sc->timer_ticks) {
935 if (csr0 & (RC_RDY | BU_EMP))
936 /* receiving not active */
939 sc->in_stats.timeout_number++;
941 timeout_change_level(sc);
943 sbni_outb(sc, CSR1, *(u_char *)&sc->csr1 | PR_RES);
944 csr0 = sbni_inb(sc, CSR0);
948 sbni_outb(sc, CSR0, csr0 | RC_CHK);
949 callout_reset(&sc->wch, hz/SBNI_HZ, sbni_timeout, sc);
952 /* -------------------------------------------------------------------------- */
955 card_start(struct sbni_softc *sc)
957 sc->timer_ticks = CHANGE_LEVEL_START_TICKS;
958 sc->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
959 sc->state |= FL_PREV_OK;
962 sc->wait_frameno = 0;
964 sbni_outb(sc, CSR1, *(u_char *)&sc->csr1 | PR_RES);
965 sbni_outb(sc, CSR0, EN_INT);
968 /* -------------------------------------------------------------------------- */
970 static u_char rxl_tab[] = {
971 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08,
972 0x0a, 0x0c, 0x0f, 0x16, 0x18, 0x1a, 0x1c, 0x1f
975 #define SIZE_OF_TIMEOUT_RXL_TAB 4
976 static u_char timeout_rxl_tab[] = {
977 0x03, 0x05, 0x08, 0x0b
981 set_initial_values(struct sbni_softc *sc, struct sbni_flags flags)
983 if (flags.fixed_rxl) {
984 sc->delta_rxl = 0; /* disable receive level autodetection */
985 sc->cur_rxl_index = flags.rxl;
987 sc->delta_rxl = DEF_RXL_DELTA;
988 sc->cur_rxl_index = DEF_RXL;
991 sc->csr1.rate = flags.fixed_rate ? flags.rate : DEFAULT_RATE;
992 sc->csr1.rxl = rxl_tab[sc->cur_rxl_index];
993 sc->maxframe = DEFAULT_FRAME_LEN;
996 * generate Ethernet address (0x00ff01xxxxxx)
998 *(u_int16_t *) sc->enaddr = htons(0x00ff);
999 if (flags.mac_addr) {
1000 *(u_int32_t *) (sc->enaddr + 2) =
1001 htonl(flags.mac_addr | 0x01000000);
1003 *(u_char *) (sc->enaddr + 2) = 0x01;
1004 read_random(sc->enaddr + 3, 3);
1009 #ifdef SBNI_DUAL_COMPOUND
1011 sbni_add(struct sbni_softc *sc)
1014 mtx_lock(&headlist_lock);
1015 sc->link = sbni_headlist;
1017 mtx_unlock(&headlist_lock);
1021 connect_to_master(struct sbni_softc *sc)
1023 struct sbni_softc *p, *p_prev;
1025 mtx_lock(&headlist_lock);
1026 for (p = sbni_headlist, p_prev = NULL; p; p_prev = p, p = p->link) {
1027 if (rman_get_start(p->io_res) == rman_get_start(sc->io_res) + 4 ||
1028 rman_get_start(p->io_res) == rman_get_start(sc->io_res) - 4) {
1031 p_prev->link = p->link;
1033 sbni_headlist = p->link;
1034 mtx_unlock(&headlist_lock);
1038 mtx_unlock(&headlist_lock);
1043 #endif /* SBNI_DUAL_COMPOUND */
1046 /* Receive level auto-selection */
1049 change_level(struct sbni_softc *sc)
1051 if (sc->delta_rxl == 0) /* do not auto-negotiate RxL */
1054 if (sc->cur_rxl_index == 0)
1056 else if (sc->cur_rxl_index == 15)
1058 else if (sc->cur_rxl_rcvd < sc->prev_rxl_rcvd)
1059 sc->delta_rxl = -sc->delta_rxl;
1061 sc->csr1.rxl = rxl_tab[sc->cur_rxl_index += sc->delta_rxl];
1062 sbni_inb(sc, CSR0); /* it needed for PCI cards */
1063 sbni_outb(sc, CSR1, *(u_char *)&sc->csr1);
1065 sc->prev_rxl_rcvd = sc->cur_rxl_rcvd;
1066 sc->cur_rxl_rcvd = 0;
1071 timeout_change_level(struct sbni_softc *sc)
1073 sc->cur_rxl_index = timeout_rxl_tab[sc->timeout_rxl];
1074 if (++sc->timeout_rxl >= 4)
1075 sc->timeout_rxl = 0;
1077 sc->csr1.rxl = rxl_tab[sc->cur_rxl_index];
1079 sbni_outb(sc, CSR1, *(u_char *)&sc->csr1);
1081 sc->prev_rxl_rcvd = sc->cur_rxl_rcvd;
1082 sc->cur_rxl_rcvd = 0;
1085 /* -------------------------------------------------------------------------- */
1088 * Process an ioctl request. This code needs some work - it looks
1093 sbni_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
1095 struct sbni_softc *sc;
1098 struct sbni_in_stats *in_stats;
1099 struct sbni_flags flags;
1103 ifr = (struct ifreq *)data;
1110 * If the interface is marked up and stopped, then start it.
1111 * If it is marked down and running, then stop it.
1114 if (ifp->if_flags & IFF_UP) {
1115 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1116 sbni_init_locked(sc);
1118 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1128 * Multicast list has changed; set the hardware filter
1133 error = EAFNOSUPPORT; */
1137 * SBNI specific ioctl
1139 case SIOCGHWFLAGS: /* get flags */
1141 bcopy((caddr_t)IF_LLADDR(sc->ifp)+3, (caddr_t) &flags, 3);
1142 flags.rxl = sc->cur_rxl_index;
1143 flags.rate = sc->csr1.rate;
1144 flags.fixed_rxl = (sc->delta_rxl == 0);
1145 flags.fixed_rate = 1;
1147 ifr->ifr_data = *(caddr_t*) &flags;
1151 in_stats = malloc(sizeof(struct sbni_in_stats), M_DEVBUF,
1154 bcopy(&sc->in_stats, in_stats, sizeof(struct sbni_in_stats));
1156 error = copyout(ifr->ifr_data, in_stats,
1157 sizeof(struct sbni_in_stats));
1158 free(in_stats, M_DEVBUF);
1161 case SIOCSHWFLAGS: /* set flags */
1163 error = priv_check(td, PRIV_DRIVER);
1166 flags = *(struct sbni_flags*)&ifr->ifr_data;
1168 if (flags.fixed_rxl) {
1170 sc->cur_rxl_index = flags.rxl;
1172 sc->delta_rxl = DEF_RXL_DELTA;
1173 sc->cur_rxl_index = DEF_RXL;
1175 sc->csr1.rxl = rxl_tab[sc->cur_rxl_index];
1176 sc->csr1.rate = flags.fixed_rate ? flags.rate : DEFAULT_RATE;
1178 bcopy((caddr_t) &flags,
1179 (caddr_t) IF_LLADDR(sc->ifp)+3, 3);
1181 /* Don't be afraid... */
1182 sbni_outb(sc, CSR1, *(char*)(&sc->csr1) | PR_RES);
1188 if (!(error = priv_check(td, PRIV_DRIVER))) /* root only */
1189 bzero(&sc->in_stats, sizeof(struct sbni_in_stats));
1194 error = ether_ioctl(ifp, command, data);
1201 /* -------------------------------------------------------------------------- */
1204 calc_crc32(u_int32_t crc, caddr_t p, u_int len)
1207 crc = CRC32(*p++, crc);
1212 static u_int32_t crc32tab[] __aligned(8) = {
1213 0xD202EF8D, 0xA505DF1B, 0x3C0C8EA1, 0x4B0BBE37,
1214 0xD56F2B94, 0xA2681B02, 0x3B614AB8, 0x4C667A2E,
1215 0xDCD967BF, 0xABDE5729, 0x32D70693, 0x45D03605,
1216 0xDBB4A3A6, 0xACB39330, 0x35BAC28A, 0x42BDF21C,
1217 0xCFB5FFE9, 0xB8B2CF7F, 0x21BB9EC5, 0x56BCAE53,
1218 0xC8D83BF0, 0xBFDF0B66, 0x26D65ADC, 0x51D16A4A,
1219 0xC16E77DB, 0xB669474D, 0x2F6016F7, 0x58672661,
1220 0xC603B3C2, 0xB1048354, 0x280DD2EE, 0x5F0AE278,
1221 0xE96CCF45, 0x9E6BFFD3, 0x0762AE69, 0x70659EFF,
1222 0xEE010B5C, 0x99063BCA, 0x000F6A70, 0x77085AE6,
1223 0xE7B74777, 0x90B077E1, 0x09B9265B, 0x7EBE16CD,
1224 0xE0DA836E, 0x97DDB3F8, 0x0ED4E242, 0x79D3D2D4,
1225 0xF4DBDF21, 0x83DCEFB7, 0x1AD5BE0D, 0x6DD28E9B,
1226 0xF3B61B38, 0x84B12BAE, 0x1DB87A14, 0x6ABF4A82,
1227 0xFA005713, 0x8D076785, 0x140E363F, 0x630906A9,
1228 0xFD6D930A, 0x8A6AA39C, 0x1363F226, 0x6464C2B0,
1229 0xA4DEAE1D, 0xD3D99E8B, 0x4AD0CF31, 0x3DD7FFA7,
1230 0xA3B36A04, 0xD4B45A92, 0x4DBD0B28, 0x3ABA3BBE,
1231 0xAA05262F, 0xDD0216B9, 0x440B4703, 0x330C7795,
1232 0xAD68E236, 0xDA6FD2A0, 0x4366831A, 0x3461B38C,
1233 0xB969BE79, 0xCE6E8EEF, 0x5767DF55, 0x2060EFC3,
1234 0xBE047A60, 0xC9034AF6, 0x500A1B4C, 0x270D2BDA,
1235 0xB7B2364B, 0xC0B506DD, 0x59BC5767, 0x2EBB67F1,
1236 0xB0DFF252, 0xC7D8C2C4, 0x5ED1937E, 0x29D6A3E8,
1237 0x9FB08ED5, 0xE8B7BE43, 0x71BEEFF9, 0x06B9DF6F,
1238 0x98DD4ACC, 0xEFDA7A5A, 0x76D32BE0, 0x01D41B76,
1239 0x916B06E7, 0xE66C3671, 0x7F6567CB, 0x0862575D,
1240 0x9606C2FE, 0xE101F268, 0x7808A3D2, 0x0F0F9344,
1241 0x82079EB1, 0xF500AE27, 0x6C09FF9D, 0x1B0ECF0B,
1242 0x856A5AA8, 0xF26D6A3E, 0x6B643B84, 0x1C630B12,
1243 0x8CDC1683, 0xFBDB2615, 0x62D277AF, 0x15D54739,
1244 0x8BB1D29A, 0xFCB6E20C, 0x65BFB3B6, 0x12B88320,
1245 0x3FBA6CAD, 0x48BD5C3B, 0xD1B40D81, 0xA6B33D17,
1246 0x38D7A8B4, 0x4FD09822, 0xD6D9C998, 0xA1DEF90E,
1247 0x3161E49F, 0x4666D409, 0xDF6F85B3, 0xA868B525,
1248 0x360C2086, 0x410B1010, 0xD80241AA, 0xAF05713C,
1249 0x220D7CC9, 0x550A4C5F, 0xCC031DE5, 0xBB042D73,
1250 0x2560B8D0, 0x52678846, 0xCB6ED9FC, 0xBC69E96A,
1251 0x2CD6F4FB, 0x5BD1C46D, 0xC2D895D7, 0xB5DFA541,
1252 0x2BBB30E2, 0x5CBC0074, 0xC5B551CE, 0xB2B26158,
1253 0x04D44C65, 0x73D37CF3, 0xEADA2D49, 0x9DDD1DDF,
1254 0x03B9887C, 0x74BEB8EA, 0xEDB7E950, 0x9AB0D9C6,
1255 0x0A0FC457, 0x7D08F4C1, 0xE401A57B, 0x930695ED,
1256 0x0D62004E, 0x7A6530D8, 0xE36C6162, 0x946B51F4,
1257 0x19635C01, 0x6E646C97, 0xF76D3D2D, 0x806A0DBB,
1258 0x1E0E9818, 0x6909A88E, 0xF000F934, 0x8707C9A2,
1259 0x17B8D433, 0x60BFE4A5, 0xF9B6B51F, 0x8EB18589,
1260 0x10D5102A, 0x67D220BC, 0xFEDB7106, 0x89DC4190,
1261 0x49662D3D, 0x3E611DAB, 0xA7684C11, 0xD06F7C87,
1262 0x4E0BE924, 0x390CD9B2, 0xA0058808, 0xD702B89E,
1263 0x47BDA50F, 0x30BA9599, 0xA9B3C423, 0xDEB4F4B5,
1264 0x40D06116, 0x37D75180, 0xAEDE003A, 0xD9D930AC,
1265 0x54D13D59, 0x23D60DCF, 0xBADF5C75, 0xCDD86CE3,
1266 0x53BCF940, 0x24BBC9D6, 0xBDB2986C, 0xCAB5A8FA,
1267 0x5A0AB56B, 0x2D0D85FD, 0xB404D447, 0xC303E4D1,
1268 0x5D677172, 0x2A6041E4, 0xB369105E, 0xC46E20C8,
1269 0x72080DF5, 0x050F3D63, 0x9C066CD9, 0xEB015C4F,
1270 0x7565C9EC, 0x0262F97A, 0x9B6BA8C0, 0xEC6C9856,
1271 0x7CD385C7, 0x0BD4B551, 0x92DDE4EB, 0xE5DAD47D,
1272 0x7BBE41DE, 0x0CB97148, 0x95B020F2, 0xE2B71064,
1273 0x6FBF1D91, 0x18B82D07, 0x81B17CBD, 0xF6B64C2B,
1274 0x68D2D988, 0x1FD5E91E, 0x86DCB8A4, 0xF1DB8832,
1275 0x616495A3, 0x1663A535, 0x8F6AF48F, 0xF86DC419,
1276 0x660951BA, 0x110E612C, 0x88073096, 0xFF000000