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NetBSD/sys/arch/arm32/mainbus/if_es.c

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/* $NetBSD: if_es.c,v 1.7 1997/03/15 18:09:32 is Exp $ */
/*
* Copyright (c) 1996, Danny C Tsen.
* Copyright (c) 1996, VLSI Technology Inc. All Rights Reserved.
* Copyright (c) 1995 Michael L. Hitch
* All rights reserved.
*
* 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 Michael L. Hitch.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* Modified from Amiga's es driver for SMC 91C9x ethernet controller.
*/
/*
* SMC 91C90 Single-Chip Ethernet Controller
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/buf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <net/if.h>
#include <net/if_ether.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#include <machine/cpu.h>
#include <machine/irqhandler.h>
#include <machine/io.h>
#include <machine/katelib.h>
#include <arm32/mainbus/if_esreg.h>
#include <arm32/mainbus/mainbus.h>
#define SWAP(x) (((x & 0xff) << 8) | ((x >> 8) & 0xff))
/*
* Ethernet software status per interface.
*
* Each interface is referenced by a network interface structure,
* es_if, which the routing code uses to locate the interface.
* This structure contains the output queue for the interface, its address, ...
*/
struct es_softc {
struct device sc_dev;
irqhandler_t sc_ih;
struct ethercom sc_ethercom; /* common Ethernet structures */
u_int sc_base; /* base address of board */
int nrxovrn;
u_int sc_intctl;
u_char pktbuf[1530];
#ifdef ESDEBUG
int sc_debug;
int sc_intbusy;
int sc_smcbusy;
#endif
};
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#ifdef ESDEBUG
/* console error messages */
int esdebug = 0;
int estxints = 0; /* IST_TX with TX enabled */
int estxint2 = 0; /* IST_TX active after IST_TX_EMPTY */
int estxint3 = 0; /* IST_TX interrupt processed */
int estxint4 = 0; /* ~TEMPTY counts */
int estxint5 = 0; /* IST_TX_EMPTY interrupts */
#endif
static int esintr __P((void *));
static void estint __P((struct ifnet *));
static void esstart __P((struct ifnet *));
static void eswatchdog __P((struct ifnet *));
static int esioctl __P((struct ifnet *, u_long, caddr_t));
static void esrint __P((struct es_softc *));
static void esinit __P((struct es_softc *));
static void esreset __P((struct es_softc *));
int esprobe __P((struct device *, void *, void *));
void esattach __P((struct device *, struct device *, void *));
struct cfattach es_ca = {
sizeof(struct es_softc), esprobe, esattach
};
struct cfdriver es_cd = {
NULL, "es", DV_IFNET
};
int
esprobe(parent, match, aux)
struct device *parent;
void *match, *aux;
{
/*
* This is a driver for the ethernet controller on the RC7500 motherboard.
* It would be nice to be able to probe rather that using conditional
* compilation. Alternatively we should probe for the RC7500 and
* use a flag for that to enable the driver.
*/
#ifdef RC7500
return(1);
#else
return(0);
#endif
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets.
*/
/*
* XXX - FIX ME
* fake an Ethernet address.
*/
unsigned long vendor_id = 0x007f00; /* just make one */
void
esattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct es_softc *sc = (void *)self;
struct mainbus_attach_args *mbap = aux;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
unsigned long ser;
u_int8_t myaddr[ETHER_ADDR_LEN];
sc->sc_base = mbap->mb_iobase;
ser = 0x5B98FF;
/*
* Manufacturer decides the 3 first bytes, i.e. ethernet vendor ID.
* (Currently only Ameristar.)
*/
myaddr[0] = (vendor_id >> 16) & 0xff;
myaddr[1] = (vendor_id >> 8) & 0xff;
myaddr[2] = vendor_id & 0xff;
/*
* XXX We should have a serial number on board!!!!
* Serial number for board contains last 3 bytes.
*/
myaddr[3] = (ser >> 16) & 0xff;
myaddr[4] = (ser >> 8) & 0xff;
myaddr[5] = (ser ) & 0xff;
/* Initialize ifnet structure. */
bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
ifp->if_softc = sc;
ifp->if_output = ether_output;
ifp->if_ioctl = esioctl;
ifp->if_start = estint;
ifp->if_watchdog = eswatchdog;
/* XXX IFF_MULTICAST */
ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_NOTRAILERS;
/* Attach the interface. */
if_attach(ifp);
ether_ifattach(ifp, myaddr);
/* Print additional info when attached. */
printf(": address %s\n", ether_sprintf(myaddr));
#if NBPFILTER > 0
bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
sc->sc_ih.ih_func = esintr;
sc->sc_ih.ih_arg = sc;
sc->sc_ih.ih_level = IPL_NET;
if (irq_claim(IRQ_ETHERNET, &sc->sc_ih) == -1)
panic("Cannot installed SMC 91C9x Ethernet IRQ handler\n");
}
#ifdef ESDEBUG
static void
es_dump_smcregs(where, smc)
char *where;
union smcregs *smc;
{
u_int cur_bank = smc->b0.bsr & BSR_BANKMSK;
printf("SMC registers %08x from %s bank %04x\n", smc, where,
smc->b0.bsr);
smc->b0.bsr = BSR_BANK0;
printf("TCR %04x EPHSR %04x RCR %04x ECR %04x MIR %04x MCR %04x\n",
smc->b0.tcr, smc->b0.ephsr, smc->b0.rcr,
smc->b0.ecr, smc->b0.mir, smc->b0.mcr);
smc->b1.bsr = BSR_BANK1;
printf("CR %04x BAR %04x IAR %04x %04x %04x GPR %04x CTR %04x\n",
smc->b1.cr, smc->b1.bar, smc->b1.iar[0], smc->b1.iar[1],
smc->b1.iar[2], smc->b1.gpr, smc->b1.ctr);
smc->b2.bsr = BSR_BANK2;
printf("MMUCR %04x PNR %02x ARR %02x FIFO %04x PTR %04x",
smc->b2.mmucr, smc->b2.pnr, smc->b2.arr, smc->b2.fifo,
smc->b2.ptr);
printf(" DATA %04x %04x IST %02x MSK %02x\n", smc->b2.data,
smc->b2.datax, smc->b2.ist, smc->b2.msk);
smc->b3.bsr = BSR_BANK3;
printf("MT %04x %04x %04x %04x\n",
smc->b3.mt[0], smc->b3.mt[1], smc->b3.mt[2], smc->b3.mt[3]);
smc->b3.bsr = cur_bank;
}
#endif
static void
esstop(sc)
struct es_softc* sc;
{
}
static void
esinit(sc)
struct es_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
register u_int iobase = sc->sc_base;
int s;
s = splimp();
#ifdef ESDEBUG
if (ifp->if_flags & IFF_RUNNING)
es_dump_smcregs("esinit", smc);
#endif
outl(iobase + BANKSEL, BSR_BANK0);
outl(iobase + B0RCR, RCR_EPH_RST);
outl(iobase + B0RCR, 0);
/*
* clear Multicast table
*/
outl(iobase + BANKSEL, BSR_BANK3);
outl(iobase + B3MT0, 0);
outl(iobase + B3MT2, 0);
outl(iobase + B3MT4, 0);
outl(iobase + B3MT6, 0);
/* XXX set Multicast table from Multicast list */
outl(iobase + BANKSEL, BSR_BANK1);
outl(iobase + B1CR, (CR_ALLONES | CR_NO_WAIT_ST | CR_16BIT));
outl(iobase + B1CTR, CTR_AUTO_RLSE);
outl(iobase + B1IAR1, *((u_short *) LLADDR(ifp->if_sadl)[0]));
outl(iobase + B1IAR3, *((u_short *) LLADDR(ifp->if_sadl)[2]));
outl(iobase + B1IAR5, *((u_short *) LLADDR(ifp->if_sadl)[4]));
outl(iobase + BANKSEL, BSR_BANK2);
outl(iobase + B2MMUCR, MMUCR_RESET);
outl(iobase + BANKSEL, BSR_BANK0);
outl(iobase + B0MCR, 0); /* reserve 0 x 256 bytes for transmit buffers */
outl(iobase + B0TCR, (TCR_PAD_EN | TCR_TXENA | TCR_MON_CSN | TCR_FDUPLX));
outl(iobase + B0RCR, (RCR_STRIP_CRC | RCR_RXEN));
/* XXX add multicast/promiscuous flags */
outl(iobase + BANKSEL, BSR_BANK2);
outb(iobase + B2MSK, (MSK_RX_OVRN | MSK_RX));
sc->sc_intctl = MSK_RX_OVRN | MSK_RX;
sc->nrxovrn = 0;
/* Interface is now 'running', with no output active. */
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
#ifdef ESDEBUG
if (ifp->if_flags & IFF_RUNNING)
es_dump_smcregs("esinit", smc);
#endif
/* Attempt to start output, if any. */
esstart(ifp);
splx(s);
}
static int
esintr(arg)
void *arg;
{
struct es_softc *sc = arg;
u_int intsts, intact;
register u_int iobase;
int n = 4;
iobase = sc->sc_base;
#ifdef ESDEBUG
while ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2 &&
sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) {
printf("%s: intr BSR not 2: %04x\n", sc->sc_dev.dv_xname,
smc->b2.bsr);
smc->b2.bsr = BSR_BANK2;
}
#endif
intsts = inb(iobase + B2IST);
intact = inb(iobase + B2MSK) & intsts;
if ((intact) == 0) {
return (0); /* Pass interrupt on down the chain */
}
#ifdef ESDEBUG
if (esdebug)
printf ("%s: esintr ist %02x msk %02x",
sc->sc_dev.dv_xname, intsts, smc->b2.msk);
if (sc->sc_intbusy++) {
printf("%s: esintr re-entered\n", sc->sc_dev.dv_xname);
panic("esintr re-entered");
}
#endif
outb(iobase + B2MSK, 0);
#ifdef ESDEBUG
if (esdebug)
printf ("=>%02x%02x pnr %02x arr %02x fifo %04x\n",
smc->b2.ist, smc->b2.ist, smc->b2.pnr, smc->b2.arr,
smc->b2.fifo);
#endif
while (n-- && ((inl(iobase + B2FIFO) & FIFO_REMPTY) == 0)) {
esrint(sc);
}
if (intact & IST_RX_OVRN) {
printf ("%s: Overrun ist %02x", sc->sc_dev.dv_xname,
intsts);
outb(iobase + B2IST, ACK_RX_OVRN);
printf ("->%02x\n", inb(iobase + B2IST));
sc->sc_ethercom.ec_if.if_ierrors++;
if (sc->nrxovrn++ >= 10) {
outl(iobase + B2MMUCR, MMUCR_RESET);
sc->nrxovrn = 0;
}
}
if (intact & IST_ALLOC) {
u_char b2arr;
sc->sc_intctl &= ~MSK_ALLOC;
b2arr = inb(iobase + B2ARR);
if ((b2arr & ARR_FAILED) == 0) {
u_char save_pnr;
save_pnr = inb(iobase + B2PNR);
outb(iobase + B2PNR, b2arr);
outl(iobase + B2MMUCR, MMUCR_RLSPKT);
/*
* we don't want to wait forever.
*/
for (n = 100; n ; n--) {
if (!(inl(iobase + B2MMUCR) & MMUCR_BUSY))
break;
}
outb(iobase + B2PNR, save_pnr);
sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE;
}
#ifdef ESDEBUG
else if (esdebug || 1) {
printf ("%s: ist %02x arr %02x\n", sc->sc_dev.dv_xname,
intsts, smc->b2.arr);
printf (" IST_ALLOC with ARR_FAILED?\n");
}
#endif
}
if (intact & IST_TX_EMPTY) {
u_int ecr;
#ifdef ESDEBUG
if (esdebug)
printf ("%s: TX EMPTY %02x",
sc->sc_dev.dv_xname, intsts);
++estxint5; /* count # IST_TX_EMPTY ints */
#endif
outb(iobase + B2IST, ACK_TX_EMPTY);
sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX);
#ifdef ESDEBUG
if (esdebug)
printf ("->%02x intcl %x pnr %02x arr %02x\n",
smc->b2.ist, sc->sc_intctl, smc->b2.pnr,
smc->b2.arr);
#endif
if (inb(iobase + B2IST) & IST_TX) {
intact |= IST_TX;
#ifdef ESDEBUG
++estxint2; /* count # TX after TX_EMPTY */
#endif
} else {
outl(iobase + BANKSEL, BSR_BANK0);
ecr = inl(iobase + B0ECR); /* Get error counters */
if (ecr & ECR_CCMSK)
sc->sc_ethercom.ec_if.if_collisions += (ecr & 0x0f) +
((ecr >> 4) & 0x0f);
outl(iobase + BANKSEL, BSR_BANK2);
}
}
if (intact & IST_TX) {
u_char tx_pnr, save_pnr;
u_int save_ptr, ephsr, tcr;
#ifdef ESDEBUG
if (esdebug) {
printf ("%s: TX INT ist %02x",
sc->sc_dev.dv_xname, intsts);
printf ("->%02x\n", smc->b2.ist);
}
++estxint3; /* count # IST_TX */
#endif
n = 0;
zzzz:
#ifdef ESDEBUG
++estxint4; /* count # ~TEMPTY */
#endif
outl(iobase + BANKSEL, BSR_BANK0);
ephsr = inl(iobase + B0EPHSR); /* get EPHSR */
tcr = inl(iobase + B0TCR); /* and TCR */
outl(iobase + BANKSEL, BSR_BANK2);
save_ptr = inl(iobase + B2PTR);
save_pnr = inb(iobase + B2PNR);
tx_pnr = inl(iobase + B2FIFO) >> 8; /* pktno from completion fifo */
outb(iobase + B2PNR, tx_pnr); /* set TX packet number */
outl(iobase + B2PTR, PTR_READ); /* point to status word */
if ((ephsr & EPHSR_TX_SUC) == 0 && (tcr & TCR_TXENA) == 0) {
/*
* Transmitter was stopped for some error. Enqueue
* the packet again and restart the transmitter.
* May need some check to limit the number of retries.
*/
outl(iobase + B2MMUCR, MMUCR_ENQ_TX);
outl(iobase + BANKSEL, BSR_BANK0);
outl(iobase + B0TCR, inl(iobase + B0TCR) | TCR_TXENA);
outl(iobase + BANKSEL, BSR_BANK2);
sc->sc_ethercom.ec_if.if_oerrors++;
sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX;
} else {
/*
* This shouldn't have happened: IST_TX indicates
* the TX completion FIFO is not empty, but the
* status for the packet on the completion FIFO
* shows that the transmit was sucessful. Since
* AutoRelease is being used, a sucessful transmit
* should not result in a packet on the completion
* FIFO. Also, that packet doesn't seem to want
* to be acknowledged. If this occurs, just reset
* the TX FIFOs.
*/
if (inb(iobase + B2IST) & IST_TX_EMPTY) {
outl(iobase + B2MMUCR, MMUCR_RESET_TX);
sc->sc_intctl &= ~(MSK_TX_EMPTY | MSK_TX);
}
#ifdef ESDEBUG
++estxints; /* count IST_TX with TX enabled */
#endif
}
outb(iobase + B2PNR, save_pnr);
outl(iobase + B2PTR, save_ptr);
outb(iobase + B2IST, ACK_TX);
if ((inl(iobase + B2FIFO) & FIFO_TEMPTY) == 0 && n++ < 10) {
if (tx_pnr != (inl(iobase + B2FIFO) >> 8))
goto zzzz;
}
}
/* output packets */
estint(&sc->sc_ethercom.ec_if);
#ifdef ESDEBUG
while ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2) {
printf("%s: intr+++ BSR not 2: %04x\n", sc->sc_dev.dv_xname,
smc->b2.bsr);
smc->b2.bsr = BSR_BANK2;
}
#endif
outb(iobase + B2MSK, sc->sc_intctl & 0xff);
#ifdef ESDEBUG
if (--sc->sc_intbusy) {
printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname);
panic("esintr busy on exit");
}
#endif
return (1); /* Claim interrupt */
}
#define NWAIT(n) \
{\
int nwait = n; \
while (nwait--) ; \
}
static void
esrint(sc)
struct es_softc *sc;
{
register iobase = sc->sc_base;
u_short len;
short cnt;
u_short pktctlw, pktlen, *buf;
struct ifnet *ifp;
struct mbuf *top, **mp, *m;
struct ether_header *eh;
u_char *b, *pktbuf;
#ifdef ESDEBUG
if (esdebug)
printf ("%s: esrint fifo %04x", sc->sc_dev.dv_xname,
smc->b2.fifo);
if (sc->sc_smcbusy++) {
printf("%s: esrint re-entered\n", sc->sc_dev.dv_xname);
panic("esrint re-entered");
}
while ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2) {
printf("%s: rint BSR not 2: %04x\n", sc->sc_dev.dv_xname,
smc->b2.bsr);
smc->b2.bsr = BSR_BANK2;
}
#endif
outl(iobase + B2PTR, (PTR_RCV | PTR_AUTOINCR | PTR_READ | 0x0000));
NWAIT(3);
pktctlw = (u_short) inl(iobase + B2DATA);
pktlen = (u_short) inl(iobase + B2DATA);
len = pktlen;
pktlen -= 6;
if (pktctlw & RFSW_ODDFRM)
pktlen++;
if (len > 1530) {
printf("%s: Corrupted packet length-sts %04x bytcnt %04x len %04x bank %04x\n",
sc->sc_dev.dv_xname, pktctlw, pktlen, len, inl(iobase + BANKSEL));
/* XXX ignore packet, or just truncate? */
#if defined(ESDEBUG) && defined(DDB)
if ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2)
Debugger();
#endif
outl(iobase + BANKSEL, BSR_BANK2);
outl(iobase + B2MMUCR, MMUCR_REMRLS_RX);
while (inl(iobase + B2MMUCR) & MMUCR_BUSY)
;
++sc->sc_ethercom.ec_if.if_ierrors;
#ifdef ESDEBUG
if (--sc->sc_smcbusy) {
printf("%s: esrintr busy on bad packet exit\n",
sc->sc_dev.dv_xname);
panic("esrintr busy on exit");
}
#endif
return;
}
pktbuf = sc->pktbuf;
buf = (u_short *)pktbuf;
cnt = (len - 4) / 2;
while (cnt--) {
*buf = (u_short) (inl(iobase + B2DATA) & 0x0000ffff);
buf++;
}
outl(iobase + B2MMUCR, MMUCR_REMRLS_RX);
/*
* We will check MMUCR_BUSY later.
*/
#ifdef ESDEBUG
if (pktctlw & (RFSW_ALGNERR | RFSW_BADCRC | RFSW_TOOLNG | RFSW_TOOSHORT)) {
printf ("%s: Packet error %04x\n", sc->sc_dev.dv_xname, pktctlw);
/* count input error? */
}
if (esdebug) {
printf (" pktctlw %04x pktlen %04x fifo %04x\n", pktctlw, pktlen,
smc->b2.fifo);
for (i = 0; i < pktlen; ++i)
printf ("%02x%s", pktbuf[i], ((i & 31) == 31) ? "\n" :
"");
if (i & 31)
printf ("\n");
}
#endif
pktlen -= sizeof(struct ether_header);
ifp = &sc->sc_ethercom.ec_if;
ifp->if_ipackets++;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = pktlen;
len = MHLEN;
top = NULL;
mp = &top;
eh = (struct ether_header *) pktbuf;
b = pktbuf + sizeof(struct ether_header);
while (pktlen > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(top);
return;
}
len = MLEN;
}
if (pktlen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
len = MCLBYTES;
}
m->m_len = len = min(pktlen, len);
bcopy((caddr_t)b, mtod(m, caddr_t), len);
b += len;
pktlen -= len;
*mp = m;
mp = &m->m_next;
}
#if NBPFILTER > 0
/*
* Check if there's a BPF listener on this interface. If so, hand off
* the raw packet to bpf.
*/
if (sc->sc_ethercom.ec_if.if_bpf) {
bpf_tap(sc->sc_ethercom.ec_if.if_bpf, pktbuf, pktlen);
/* bpf_mtap(sc->sc_ethercom.ec_if.if_bpf, top);*/
/*
* 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 ((sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC) &&
(eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
bcmp(eh->ether_dhost, LLADDR(ifp->if_sadl),
sizeof(eh->ether_dhost)) != 0) {
m_freem(top);
return;
}
}
#endif
ether_input(ifp, eh, top);
#ifdef ESDEBUG
if (--sc->sc_smcbusy) {
printf("%s: esintr busy on exit\n", sc->sc_dev.dv_xname);
panic("esintr busy on exit");
}
#endif
while (inl(iobase + B2MMUCR) & MMUCR_BUSY)
;
}
static void
estint(ifp)
struct ifnet *ifp;
{
int s;
s = splnet();
esstart(ifp);
splx(s);
}
static void
esstart(ifp)
struct ifnet *ifp;
{
struct es_softc *sc = ifp->if_softc;
register u_int iobase = sc->sc_base;
struct mbuf *m0, *m;
u_short *pktbuf;
u_short pktctlw, pktlen, len;
u_short *buf;
short cnt;
int i;
u_char active_pnr;
if ((sc->sc_ethercom.ec_if.if_flags & (IFF_RUNNING | IFF_OACTIVE)) !=
IFF_RUNNING) {
IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m);
if (m)
m_freem(m);
return;
}
#ifdef ESDEBUG
if (sc->sc_smcbusy++) {
printf("%s: esstart re-entered\n", sc->sc_dev.dv_xname);
panic("esstart re-entred");
}
while ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2) {
printf("%s: esstart BSR not 2: %04x\n", sc->sc_dev.dv_xname,
smc->b2.bsr);
smc->b2.bsr = BSR_BANK2;
}
#endif
IF_DEQUEUE(&sc->sc_ethercom.ec_if.if_snd, m);
if (!m)
return;
pktbuf = (u_short *) sc->pktbuf;
for (m0 = m, pktlen = 0; m; m = m->m_next) {
bcopy(mtod(m, caddr_t), (char *)pktbuf + pktlen, m->m_len);
pktlen += m->m_len;
}
len = pktlen;
m_freem(m0);
if (len & 1) { /* Figure out where to put control byte */
pktbuf[len/2] = (pktbuf[len/2] & 0x00ff) | CTLB_ODD;
pktlen++;
} else {
pktbuf[len/2] = 0;
pktlen += 2;
}
if (pktlen > (ETHERMTU + 18)) {
printf("es: packet too long = %d bytes\n", pktlen);
}
#if NBPFILTER > 0
if (sc->sc_ethercom.ec_if.if_bpf)
bpf_tap(sc->sc_ethercom.ec_if.if_bpf, (char *)pktbuf, len);
#endif
pktctlw = 0;
pktlen += 4;
outl(iobase + B2MMUCR, (MMUCR_ALLOC | (pktlen >> 8)));
for (i = 0; i <= 100; ++i) {
if ((inb(iobase + B2ARR) & ARR_FAILED) == 0)
break;
}
if (inb(iobase + B2ARR) & ARR_FAILED) {
sc->sc_ethercom.ec_if.if_flags |= IFF_OACTIVE;
sc->sc_intctl |= MSK_ALLOC;
goto esstart_out;
}
active_pnr = inb(iobase + B2ARR);
outb(iobase + B2PNR, active_pnr);
outl(iobase + B2PTR, PTR_AUTOINCR);
NWAIT(3);
outl(iobase + B2DATA, pktctlw);
outl(iobase + B2DATA, pktlen);
buf = pktbuf;
cnt = (pktlen - 4) / 2;
while (cnt--) {
outl(iobase + B2DATA, (u_short) *buf);
buf++;
}
outl(iobase + B2MMUCR, MMUCR_ENQ_TX);
if (inb(iobase + B2PNR) != active_pnr)
printf("%s: esstart - PNR changed %x->%x\n",
sc->sc_dev.dv_xname, active_pnr, inb(iobase + B2PNR));
sc->sc_ethercom.ec_if.if_opackets++; /* move to interrupt? */
sc->sc_intctl |= MSK_TX_EMPTY | MSK_TX;
esstart_out:
outb(iobase + B2MSK, sc->sc_intctl & 0xff);
#ifdef ESDEBUG
while ((smc->b2.bsr & BSR_BANKMSK) != BSR_BANK2) {
printf("%s: esstart++++ BSR not 2: %04x\n", sc->sc_dev.dv_xname,
smc->b2.bsr);
smc->b2.bsr = BSR_BANK2;
}
if (--sc->sc_smcbusy) {
printf("%s: esstart busy on exit\n", sc->sc_dev.dv_xname);
panic("esstart busy on exit");
}
#endif
}
static int
esioctl(ifp, command, data)
register struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct es_softc *sc = ifp->if_softc;
register struct ifaddr *ifa = (struct ifaddr *)data;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splimp();
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
esinit(sc);
arp_ifinit(ifp, 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 *)LLADDR(ifp->if_sadl);
else
bcopy(ina->x_host.c_host,
LLADDR(ifp->if_sadl), ETHER_ADDR_LEN));
/* Set new address. */
esinit(sc);
break;
#endif
default:
esinit(sc);
break;
}
break;
case SIOCSIFFLAGS:
/*
* If interface is marked down and it is running, then stop it
*/
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.
*/
esstop(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.
*/
esinit(sc);
} else {
/*
* Reset the interface to pick up changes in any other
* flags that affect hardware registers.
*/
esstop(sc);
esinit(sc);
}
#ifdef ESDEBUG
if (ifp->if_flags & IFF_DEBUG)
esdebug = sc->sc_debug = 1;
else
esdebug = sc->sc_debug = 0;
#endif
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (command == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ethercom) :
ether_delmulti(ifr, &sc->sc_ethercom);
if (error == ENETRESET) {
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*/
/* XXX */
error = 0;
}
break;
default:
error = EINVAL;
}
splx(s);
return (error);
}
static void
esreset(sc)
struct es_softc *sc;
{
int s;
s = splimp();
esstop(sc);
esinit(sc);
splx(s);
}
static void
eswatchdog(ifp)
struct ifnet *ifp;
{
struct es_softc *sc = ifp->if_softc;
log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
++ifp->.if_oerrors;
esreset(sc);
}
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