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NetBSD/sys/dev/ic/am7990.c
mycroft 607e071f1b Fix pasto.
1995-07-24 04:34:51 +00:00

1219 lines
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/* $NetBSD: am7990.c,v 1.3 1995/07/24 04:34:51 mycroft Exp $ */
/*-
* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include <sys/ioctl.h>
#include <sys/errno.h>
#ifdef INET
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if defined(CCITT) && defined(LLC)
#include <sys/socketvar.h>
#include <netccitt/x25.h>
extern llc_ctlinput(), cons_rtrequest();
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#ifdef LEDEBUG
void recv_print __P((struct le_softc *, int));
void xmit_print __P((struct le_softc *, int));
#endif
void
leconfig(sc)
struct le_softc *sc;
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
int mem;
/* Make sure the chip is stopped. */
lestop(sc);
/* Initialize ifnet structure. */
ifp->if_unit = sc->sc_dev.dv_unit;
ifp->if_start = lestart;
ifp->if_ioctl = leioctl;
ifp->if_watchdog = lewatchdog;
ifp->if_flags =
IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
/* Attach the interface. */
if_attach(ifp);
ether_ifattach(ifp);
#if NBPFILTER > 0
bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
switch (sc->sc_memsize) {
case 8192:
sc->sc_nrbuf = 4;
sc->sc_ntbuf = 1;
break;
case 16384:
sc->sc_nrbuf = 8;
sc->sc_ntbuf = 2;
break;
case 32768:
sc->sc_nrbuf = 16;
sc->sc_ntbuf = 4;
break;
case 65536:
sc->sc_nrbuf = 32;
sc->sc_ntbuf = 8;
break;
default:
panic("leconfig: weird memory size");
}
printf(": address %s, %d receive buffers, %d transmit buffers\n",
ether_sprintf(sc->sc_arpcom.ac_enaddr),
sc->sc_nrbuf, sc->sc_ntbuf);
mem = 0;
sc->sc_initaddr = mem;
mem += sizeof(struct leinit);
sc->sc_rmdaddr = mem;
mem += sizeof(struct lermd) * sc->sc_nrbuf;
sc->sc_tmdaddr = mem;
mem += sizeof(struct letmd) * sc->sc_ntbuf;
sc->sc_rbufaddr = mem;
mem += LEBLEN * sc->sc_nrbuf;
sc->sc_tbufaddr = mem;
mem += LEBLEN * sc->sc_ntbuf;
#ifdef notyet
if (mem > ...)
panic(...);
#endif
}
void
lereset(sc)
struct le_softc *sc;
{
int s;
s = splimp();
leinit(sc);
splx(s);
}
void
lewatchdog(unit)
short unit;
{
struct le_softc *sc = LE_SOFTC(unit);
log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
++sc->sc_arpcom.ac_if.if_oerrors;
lereset(sc);
}
/*
* Set up the initialization block and the descriptor rings.
*/
void
lememinit(sc)
register struct le_softc *sc;
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
u_long a;
int bix;
struct leinit init;
struct lermd rmd;
struct letmd tmd;
#if NBPFILTER > 0
if (ifp->if_flags & IFF_PROMISC)
init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
else
#endif
init.init_mode = LE_MODE_NORMAL;
init.init_padr[0] =
(sc->sc_arpcom.ac_enaddr[1] << 8) | sc->sc_arpcom.ac_enaddr[0];
init.init_padr[1] =
(sc->sc_arpcom.ac_enaddr[3] << 8) | sc->sc_arpcom.ac_enaddr[2];
init.init_padr[2] =
(sc->sc_arpcom.ac_enaddr[5] << 8) | sc->sc_arpcom.ac_enaddr[4];
lesetladrf(&sc->sc_arpcom, init.init_ladrf);
sc->sc_last_rd = 0;
sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
a = sc->sc_addr + LE_RMDADDR(sc, 0);
init.init_rdra = a;
init.init_rlen = (a >> 16) | ((ffs(sc->sc_nrbuf) - 1) << 13);
a = sc->sc_addr + LE_TMDADDR(sc, 0);
init.init_tdra = a;
init.init_tlen = (a >> 16) | ((ffs(sc->sc_ntbuf) - 1) << 13);
(*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
/*
* Set up receive ring descriptors.
*/
for (bix = 0; bix < sc->sc_nrbuf; bix++) {
a = sc->sc_addr + LE_RBUFADDR(sc, bix);
rmd.rmd0 = a;
rmd.rmd1_hadr = a >> 16;
rmd.rmd1_bits = LE_R1_OWN;
rmd.rmd2 = -LEBLEN | LE_XMD2_ONES;
rmd.rmd3 = 0;
(*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
sizeof(rmd));
}
/*
* Set up transmit ring descriptors.
*/
for (bix = 0; bix < sc->sc_ntbuf; bix++) {
a = sc->sc_addr + LE_TBUFADDR(sc, bix);
tmd.tmd0 = a;
tmd.tmd1_hadr = a >> 16;
tmd.tmd1_bits = 0;
tmd.tmd2 = 0 | LE_XMD2_ONES;
tmd.tmd3 = 0;
(*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
sizeof(tmd));
}
}
void
lestop(sc)
struct le_softc *sc;
{
lewrcsr(sc, LE_CSR0, LE_C0_STOP);
}
/*
* Initialization of interface; set up initialization block
* and transmit/receive descriptor rings.
*/
void
leinit(sc)
register struct le_softc *sc;
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
register int timo;
u_long a;
lewrcsr(sc, LE_CSR0, LE_C0_STOP);
LE_DELAY(100);
/* Set the correct byte swapping mode, etc. */
lewrcsr(sc, LE_CSR3, sc->sc_conf3);
/* Set up LANCE init block. */
lememinit(sc);
/* Give LANCE the physical address of its init block. */
a = sc->sc_addr + LE_INITADDR(sc);
lewrcsr(sc, LE_CSR1, a);
lewrcsr(sc, LE_CSR2, a >> 16);
/* Try to initialize the LANCE. */
LE_DELAY(100);
lewrcsr(sc, LE_CSR0, LE_C0_INIT);
/* Wait for initialization to finish. */
for (timo = 100000; timo; timo--)
if (lerdcsr(sc, LE_CSR0) & LE_C0_IDON)
break;
if (lerdcsr(sc, LE_CSR0) & LE_C0_IDON) {
/* Start the LANCE. */
lewrcsr(sc, LE_CSR0, LE_C0_INEA | LE_C0_STRT | LE_C0_IDON);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
lestart(ifp);
} else
printf("%s: card failed to initialize\n", sc->sc_dev.dv_xname);
}
/*
* Routine to copy from mbuf chain to transmit buffer in
* network buffer memory.
*/
integrate int
leput(sc, boff, m)
struct le_softc *sc;
int boff;
register struct mbuf *m;
{
register struct mbuf *n;
register int len, tlen = 0;
for (; m; m = n) {
len = m->m_len;
if (len == 0) {
MFREE(m, n);
continue;
}
(*sc->sc_copytobuf)(sc, mtod(m, caddr_t), boff, len);
boff += len;
tlen += len;
MFREE(m, n);
}
if (tlen < LEMINSIZE) {
(*sc->sc_zerobuf)(sc, boff, LEMINSIZE - tlen);
tlen = LEMINSIZE;
}
return (tlen);
}
/*
* Pull data off an interface.
* Len is length of data, with local net header stripped.
* We copy the data into mbufs. When full cluster sized units are present
* we copy into clusters.
*/
integrate struct mbuf *
leget(sc, boff, totlen)
struct le_softc *sc;
int boff, totlen;
{
register struct mbuf *m;
struct mbuf *top, **mp;
int len, pad;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
return (0);
m->m_pkthdr.rcvif = &sc->sc_arpcom.ac_if;
m->m_pkthdr.len = totlen;
pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header);
m->m_data += pad;
len = MHLEN - pad;
top = 0;
mp = &top;
while (totlen > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(top);
return 0;
}
len = MLEN;
}
if (top && totlen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
len = MCLBYTES;
}
m->m_len = len = min(totlen, len);
(*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), boff, len);
boff += len;
totlen -= len;
*mp = m;
mp = &m->m_next;
}
return (top);
}
/*
* Pass a packet to the higher levels.
*/
integrate void
leread(sc, boff, len)
register struct le_softc *sc;
int boff, len;
{
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
struct mbuf *m;
struct ether_header *eh;
if (len <= sizeof(struct ether_header) ||
len > ETHERMTU + sizeof(struct ether_header)) {
printf("%s: invalid packet size %d; dropping\n",
sc->sc_dev.dv_xname, len);
ifp->if_ierrors++;
return;
}
/* Pull packet off interface. */
m = leget(sc, boff, len);
if (m == 0) {
ifp->if_ierrors++;
return;
}
ifp->if_ipackets++;
/* We assume that the header fit entirely in one mbuf. */
eh = mtod(m, struct ether_header *);
#if NBPFILTER > 0
/*
* Check if there's a BPF listener on this interface.
* If so, hand off the raw packet to BPF.
*/
if (ifp->if_bpf) {
bpf_mtap(ifp->if_bpf, m);
/*
* Note that the interface cannot be in promiscuous mode if
* there are no BPF listeners. And if we are in promiscuous
* mode, we have to check if this packet is really ours.
*/
if ((ifp->if_flags & IFF_PROMISC) != 0 &&
(eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr,
sizeof(eh->ether_dhost)) != 0) {
m_freem(m);
return;
}
}
#endif
/* Pass the packet up, with the ether header sort-of removed. */
m_adj(m, sizeof(struct ether_header));
ether_input(ifp, eh, m);
}
integrate void
lerint(sc)
struct le_softc *sc;
{
register int bix;
int rp;
struct lermd rmd;
bix = sc->sc_last_rd;
/* Process all buffers with valid data. */
for (;;) {
rp = LE_RMDADDR(sc, bix);
(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
if (rmd.rmd1_bits & LE_R1_OWN)
break;
if (rmd.rmd1_bits & LE_R1_ERR) {
if (rmd.rmd1_bits & LE_R1_ENP) {
if ((rmd.rmd1_bits & LE_R1_OFLO) == 0) {
if (rmd.rmd1_bits & LE_R1_FRAM)
printf("%s: framing error\n",
sc->sc_dev.dv_xname);
if (rmd.rmd1_bits & LE_R1_CRC)
printf("%s: crc mismatch\n",
sc->sc_dev.dv_xname);
}
} else {
if (rmd.rmd1_bits & LE_R1_OFLO)
printf("%s: overflow\n",
sc->sc_dev.dv_xname);
}
if (rmd.rmd1_bits & LE_R1_BUFF)
printf("%s: receive buffer error\n",
sc->sc_dev.dv_xname);
} else if (rmd.rmd1_bits & (LE_R1_STP | LE_R1_ENP) !=
(LE_R1_STP | LE_R1_ENP)) {
printf("%s: dropping chained buffer\n",
sc->sc_dev.dv_xname);
} else {
#ifdef LEDEBUG
if (sc->sc_debug)
recv_print(sc, sc->sc_last_rd);
#endif
leread(sc, LE_RBUFADDR(sc, bix), (int)rmd.rmd3 - 4);
}
rmd.rmd1_bits = LE_R1_OWN;
rmd.rmd2 = -LEBLEN | LE_XMD2_ONES;
rmd.rmd3 = 0;
(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
#ifdef LEDEBUG
if (sc->sc_debug)
printf("sc->sc_last_rd = %x, rmd = %x\n",
sc->sc_last_rd, rmd);
#endif
if (++bix == sc->sc_nrbuf)
bix = 0;
}
sc->sc_last_rd = bix;
}
integrate void
letint(sc)
register struct le_softc *sc;
{
register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
register int bix;
struct letmd tmd;
bix = sc->sc_first_td;
for (;;) {
if (sc->sc_no_td <= 0)
break;
#ifdef LEDEBUG
if (sc->sc_debug)
printf("trans tmd = %x\n", tmd);
#endif
(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
sizeof(tmd));
if (tmd.tmd1_bits & LE_T1_OWN)
break;
ifp->if_flags &= ~IFF_OACTIVE;
if (tmd.tmd1_bits & LE_T1_ERR) {
if (tmd.tmd3 & LE_T3_BUFF)
printf("%s: transmit buffer error\n", sc->sc_dev.dv_xname);
else if (tmd.tmd3 & LE_T3_UFLO)
printf("%s: underflow\n", sc->sc_dev.dv_xname);
if (tmd.tmd3 & (LE_T3_BUFF | LE_T3_UFLO)) {
lereset(sc);
return;
}
if (tmd.tmd3 & LE_T3_LCAR)
printf("%s: lost carrier\n", sc->sc_dev.dv_xname);
if (tmd.tmd3 & LE_T3_LCOL)
ifp->if_collisions++;
if (tmd.tmd3 & LE_T3_RTRY) {
printf("%s: excessive collisions, tdr %d\n",
sc->sc_dev.dv_xname, tmd.tmd3 & LE_T3_TDR_MASK);
ifp->if_collisions += 16;
}
ifp->if_oerrors++;
} else {
if (tmd.tmd1_bits & LE_T1_ONE)
ifp->if_collisions++;
else if (tmd.tmd1_bits & LE_T1_MORE)
/* Real number is unknown. */
ifp->if_collisions += 2;
ifp->if_opackets++;
}
if (++bix == sc->sc_ntbuf)
bix = 0;
--sc->sc_no_td;
}
sc->sc_first_td = bix;
lestart(ifp);
if (sc->sc_no_td == 0)
ifp->if_timer = 0;
}
/*
* Controller interrupt.
*/
#ifdef LEINTR_UNIT
int
leintr(unit)
int unit;
{
register struct le_softc *sc = LE_SOFTC(unit);
#else
int
leintr(arg)
register void *arg;
{
register struct le_softc *sc = arg;
#endif
register u_int16_t isr;
isr = lerdcsr(sc, LE_CSR0);
#ifdef LEDEBUG
if (sc->sc_debug)
printf("%s: leintr entering with isr=%04x\n",
sc->sc_dev.dv_xname, isr);
#endif
if ((isr & LE_C0_INTR) == 0)
return (0);
lewrcsr(sc, LE_CSR0,
isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
if (isr & LE_C0_ERR) {
if (isr & LE_C0_BABL) {
printf("%s: babble\n", sc->sc_dev.dv_xname);
sc->sc_arpcom.ac_if.if_oerrors++;
}
#if 0
if (isr & LE_C0_CERR) {
printf("%s: collision error\n", sc->sc_dev.dv_xname);
sc->sc_arpcom.ac_if.if_collisions++;
}
#endif
if (isr & LE_C0_MISS)
sc->sc_arpcom.ac_if.if_ierrors++;
if (isr & LE_C0_MERR) {
printf("%s: memory error\n", sc->sc_dev.dv_xname);
lereset(sc);
return (1);
}
}
if ((isr & LE_C0_RXON) == 0) {
printf("%s: receiver disabled\n", sc->sc_dev.dv_xname);
sc->sc_arpcom.ac_if.if_ierrors++;
lereset(sc);
return (1);
}
if ((isr & LE_C0_TXON) == 0) {
printf("%s: transmitter disabled\n", sc->sc_dev.dv_xname);
sc->sc_arpcom.ac_if.if_oerrors++;
lereset(sc);
return (1);
}
if (isr & LE_C0_RINT)
lerint(sc);
if (isr & LE_C0_TINT)
letint(sc);
return (1);
}
/*
* Setup output on interface.
* Get another datagram to send off of the interface queue, and map it to the
* interface before starting the output.
* Called only at splimp or interrupt level.
*/
void
lestart(ifp)
register struct ifnet *ifp;
{
register struct le_softc *sc = LE_SOFTC(ifp->if_unit);
register int bix;
register struct mbuf *m;
struct letmd tmd;
int rp;
int len;
if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
return;
bix = sc->sc_last_td;
for (;;) {
rp = LE_TMDADDR(sc, bix);
(*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
if (tmd.tmd1_bits & LE_T1_OWN) {
ifp->if_flags |= IFF_OACTIVE;
printf("missing buffer, no_td = %d, last_td = %d\n",
sc->sc_no_td, sc->sc_last_td);
}
IF_DEQUEUE(&ifp->if_snd, m);
if (m == 0)
break;
#if NBPFILTER > 0
/*
* If BPF is listening on this interface, let it see the packet
* before we commit it to the wire.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
/*
* Copy the mbuf chain into the transmit buffer.
*/
len = leput(sc, LE_TBUFADDR(sc, bix), m);
#ifdef LEDEBUG
if (len > ETHERMTU + sizeof(struct ether_header))
printf("packet length %d\n", len);
#endif
ifp->if_timer = 5;
/*
* Init transmit registers, and set transmit start flag.
*/
tmd.tmd1_bits = LE_T1_OWN | LE_T1_STP | LE_T1_ENP;
tmd.tmd2 = -len | LE_XMD2_ONES;
tmd.tmd3 = 0;
(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
#ifdef LEDEBUG
if (sc->sc_debug)
xmit_print(sc, sc->sc_last_td);
#endif
lewrcsr(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
if (++bix == sc->sc_ntbuf)
bix = 0;
if (++sc->sc_no_td == sc->sc_ntbuf) {
ifp->if_flags |= IFF_OACTIVE;
break;
}
}
sc->sc_last_td = bix;
}
/*
* Process an ioctl request.
*/
int
leioctl(ifp, cmd, data)
register struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct le_softc *sc = LE_SOFTC(ifp->if_unit);
struct ifaddr *ifa = (struct ifaddr *)data;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splimp();
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
leinit(sc);
arp_ifinit(&sc->sc_arpcom, ifa);
break;
#endif
#ifdef NS
case AF_NS:
{
register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr;
if (ns_nullhost(*ina))
ina->x_host =
*(union ns_host *)(sc->sc_arpcom.ac_enaddr);
else
bcopy(ina->x_host.c_host,
sc->sc_arpcom.ac_enaddr,
sizeof(sc->sc_arpcom.ac_enaddr));
/* Set new address. */
leinit(sc);
break;
}
#endif
default:
leinit(sc);
break;
}
break;
#if defined(CCITT) && defined(LLC)
case SIOCSIFCONF_X25:
ifp->if_flags |= IFF_UP;
ifa->ifa_rtrequest = (void (*)())cons_rtrequest; /* XXX */
error = x25_llcglue(PRC_IFUP, ifa->ifa_addr);
if (error == 0)
leinit(sc);
break;
#endif /* CCITT && LLC */
case SIOCSIFFLAGS:
if ((ifp->if_flags & IFF_UP) == 0 &&
(ifp->if_flags & IFF_RUNNING) != 0) {
/*
* If interface is marked down and it is running, then
* stop it.
*/
lestop(sc);
ifp->if_flags &= ~IFF_RUNNING;
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interface is marked up and it is stopped, then
* start it.
*/
leinit(sc);
} else {
/*
* Reset the interface to pick up changes in any other
* flags that affect hardware registers.
*/
/*lestop(sc);*/
leinit(sc);
}
#ifdef LEDEBUG
if (ifp->if_flags & IFF_DEBUG)
sc->sc_debug = 1;
else
sc->sc_debug = 0;
#endif
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_arpcom) :
ether_delmulti(ifr, &sc->sc_arpcom);
if (error == ENETRESET) {
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*/
lereset(sc);
error = 0;
}
break;
default:
error = EINVAL;
break;
}
splx(s);
return (error);
}
#ifdef LEDEBUG
void
recv_print(sc, no)
struct le_softc *sc;
int no;
{
struct lermd rmd;
u_int16_t len;
struct ether_header eh;
(*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
len = rmd.rmd3;
printf("%s: receive buffer %d, len = %d\n", sc->sc_dev.dv_xname, no,
len);
printf("%s: status %04x\n", sc->sc_dev.dv_xname, lerdcsr(sc, LE_CSR0));
printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n",
sc->sc_dev.dv_xname,
rmd.rmd0, rmd.rmd1_hadr, rmd.rmd1_bits, rmd.rmd2, rmd.rmd3);
if (len >= sizeof(eh)) {
(*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
printf("%s: dst %s", ether_sprintf(eh.ether_dhost));
printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
ntohs(eh.ether_type));
}
}
void
xmit_print(sc, no)
struct le_softc *sc;
int no;
{
struct letmd tmd;
u_int16_t len;
struct ether_header eh;
(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
len = -tmd.tmd2;
printf("%s: transmit buffer %d, len = %d\n", sc->sc_dev.dv_xname, no,
len);
printf("%s: status %04x\n", sc->sc_dev.dv_xname, lerdcsr(sc, LE_CSR0));
printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n",
sc->sc_dev.dv_xname,
tmd.tmd0, tmd.tmd1_hadr, tmd.tmd1_bits, tmd.tmd2, tmd.tmd3);
if (len >= sizeof(eh)) {
(*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
printf("%s: dst %s", ether_sprintf(eh.ether_dhost));
printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
ntohs(eh.ether_type));
}
}
#endif /* LEDEBUG */
/*
* Set up the logical address filter.
*/
void
lesetladrf(ac, af)
struct arpcom *ac;
u_int16_t *af;
{
struct ifnet *ifp = &ac->ac_if;
struct ether_multi *enm;
register u_char *cp, c;
register u_int32_t crc;
register int i, len;
struct ether_multistep step;
/*
* Set up multicast address filter by passing all multicast addresses
* through a crc generator, and then using the high order 6 bits as an
* index into the 64 bit logical address filter. The high order bit
* selects the word, while the rest of the bits select the bit within
* the word.
*/
if (ifp->if_flags & IFF_PROMISC)
goto allmulti;
af[0] = af[1] = af[2] = af[3] = 0x0000;
ETHER_FIRST_MULTI(step, ac, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi,
sizeof(enm->enm_addrlo)) != 0) {
/*
* We must listen to a range of multicast addresses.
* For now, just accept all multicasts, rather than
* trying to set only those filter bits needed to match
* the range. (At this time, the only use of address
* ranges is for IP multicast routing, for which the
* range is big enough to require all bits set.)
*/
goto allmulti;
}
cp = enm->enm_addrlo;
crc = 0xffffffff;
for (len = sizeof(enm->enm_addrlo); --len >= 0;) {
c = *cp++;
for (i = 8; --i >= 0;) {
if ((crc & 0x01) ^ (c & 0x01)) {
crc >>= 1;
crc ^= 0xedb88320;
} else
crc >>= 1;
c >>= 1;
}
}
/* Just want the 6 most significant bits. */
crc >>= 26;
/* Set the corresponding bit in the filter. */
af[crc >> 4] |= 1 << (crc & 0xf);
ETHER_NEXT_MULTI(step, enm);
}
ifp->if_flags &= ~IFF_ALLMULTI;
return;
allmulti:
ifp->if_flags |= IFF_ALLMULTI;
af[0] = af[1] = af[2] = af[3] = 0xffff;
}
#if 0 /* USE OF THE FOLLOWING IS MACHINE-SPECIFIC */
/*
* Routines for accessing the transmit and receive buffers. Unfortunately,
* CPU addressing of these buffers is done in one of 3 ways:
* - contiguous (for the 3max and turbochannel option card)
* - gap2, which means shorts (2 bytes) interspersed with short (2 byte)
* spaces (for the pmax)
* - gap16, which means 16bytes interspersed with 16byte spaces
* for buffers which must begin on a 32byte boundary (for 3min and maxine)
* The buffer offset is the logical byte offset, assuming contiguous storage.
*/
void
copytodesc_contig(sc, from, boff, len)
struct le_softc *sc;
caddr_t from;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
/*
* Just call bcopy() to do the work.
*/
bcopy(from, buf + boff, len);
}
void
copyfromdesc_contig(sc, to, boff, len)
struct le_softc *sc;
caddr_t to;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
/*
* Just call bcopy() to do the work.
*/
bcopy(buf + boff, to, len);
}
void
copytobuf_contig(sc, from, boff, len)
struct le_softc *sc;
caddr_t from;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
/*
* Just call bcopy() to do the work.
*/
bcopy(from, buf + boff, len);
}
void
copyfrombuf_contig(sc, to, boff, len)
struct le_softc *sc;
caddr_t to;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
/*
* Just call bcopy() to do the work.
*/
bcopy(buf + boff, to, len);
}
void
zerobuf_contig(sc, boff, len)
struct le_softc *sc;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
/*
* Just let bzero() do the work
*/
bzero(buf + boff, len);
}
/*
* For the pmax the buffer consists of shorts (2 bytes) interspersed with
* short (2 byte) spaces and must be accessed with halfword load/stores.
* (don't worry about doing an extra byte)
*/
void
copytobuf_gap2(sc, from, boff, len)
struct le_softc *sc;
register caddr_t from;
int boff;
register int len;
{
volatile caddr_t buf = sc->sc_mem;
register volatile u_short *bptr;
register int xfer;
if (boff & 0x1) {
/* handle unaligned first byte */
bptr = ((volatile u_short *)buf) + (boff - 1);
*bptr = (*from++ << 8) | (*bptr & 0xff);
bptr += 2;
len--;
} else
bptr = ((volatile u_short *)buf) + boff;
if ((unsigned)from & 0x1) {
while (len > 1) {
*bptr = (from[1] << 8) | (from[0] & 0xff);
bptr += 2;
from += 2;
len -= 2;
}
} else {
/* optimize for aligned transfers */
xfer = (int)((unsigned)len & ~0x1);
CopyToBuffer((u_short *)from, bptr, xfer);
bptr += xfer;
from += xfer;
len -= xfer;
}
if (len == 1)
*bptr = (u_short)*from;
}
void
copyfrombuf_gap2(sc, to, boff, len)
struct le_softc *sc;
register caddr_t to;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register volatile u_short *bptr;
register u_short tmp;
register int xfer;
if (boff & 0x1) {
/* handle unaligned first byte */
bptr = ((volatile u_short *)buf) + (boff - 1);
*to++ = (*bptr >> 8) & 0xff;
bptr += 2;
len--;
} else
bptr = ((volatile u_short *)buf) + boff;
if ((unsigned)to & 0x1) {
while (len > 1) {
tmp = *bptr;
*to++ = tmp & 0xff;
*to++ = (tmp >> 8) & 0xff;
bptr += 2;
len -= 2;
}
} else {
/* optimize for aligned transfers */
xfer = (int)((unsigned)len & ~0x1);
CopyFromBuffer(bptr, to, xfer);
bptr += xfer;
to += xfer;
len -= xfer;
}
if (len == 1)
*to = *bptr & 0xff;
}
void
zerobuf_gap2(sc, boff, len)
struct le_softc *sc;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register volatile u_short *bptr;
if ((unsigned)boff & 0x1) {
bptr = ((volatile u_short *)buf) + (boff - 1);
*bptr &= 0xff;
bptr += 2;
len--;
} else
bptr = ((volatile u_short *)buf) + boff;
while (len > 0) {
*bptr = 0;
bptr += 2;
len -= 2;
}
}
/*
* For the 3min and maxine, the buffers are in main memory filled in with
* 16byte blocks interspersed with 16byte spaces.
*/
void
copytobuf_gap16(sc, from, boff, len)
struct le_softc *sc;
register caddr_t from;
int boff;
register int len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bcopy(from, bptr + boff, xfer);
from += xfer;
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}
void
copyfrombuf_gap16(sc, to, boff, len)
struct le_softc *sc;
register caddr_t to;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bcopy(bptr + boff, to, xfer);
to += xfer;
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}
void
zerobuf_gap16(sc, boff, len)
struct le_softc *sc;
int boff, len;
{
volatile caddr_t buf = sc->sc_mem;
register caddr_t bptr;
register int xfer;
bptr = buf + ((boff << 1) & ~0x1f);
boff &= 0xf;
xfer = min(len, 16 - boff);
while (len > 0) {
bzero(bptr + boff, xfer);
bptr += 32;
boff = 0;
len -= xfer;
xfer = min(len, 16);
}
}
#endif
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