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freebsd-skq/sys/dev/ep/if_ep.c
Matthew N. Dodd bb25efadc4 - Return error status instead of value in get_e(). 
- Modify ep_get_macaddr() to return an error status.
- Reverse the return value logic of eeprom_rdy().
2003-03-29 21:44:46 +00:00

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/*
* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
* 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 Herb Peyerl.
* 4. The name of Herb Peyerl 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.
*
* if_ep.c,v 1.19 1995/01/24 20:53:45 davidg Exp
*/
/*
* Modified from the FreeBSD 1.1.5.1 version by:
* Andres Vega Garcia
* INRIA - Sophia Antipolis, France
* avega@sophia.inria.fr
*/
/*
* $FreeBSD$
*
* Promiscuous mode added and interrupt logic slightly changed
* to reduce the number of adapter failures. Transceiver select
* logic changed to use value from EEPROM. Autoconfiguration
* features added.
* Done by:
* Serge Babkin
* Chelindbank (Chelyabinsk, Russia)
* babkin@hq.icb.chel.su
*/
/*
* Pccard support for 3C589 by:
* HAMADA Naoki
* nao@tom-yam.or.jp
*/
/*
* MAINTAINER: Matthew N. Dodd <winter@jurai.net>
* <mdodd@FreeBSD.org>
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <net/bpf.h>
#include <dev/ep/if_epreg.h>
#include <dev/ep/if_epvar.h>
/* Exported variables */
devclass_t ep_devclass;
#if 0
static char * ep_conn_type[] = {"UTP", "AUI", "???", "BNC"};
static int if_media2ep_media[] = { 0, 0, 0, UTP, BNC, AUI };
#endif
static int ep_media2if_media[] =
{ IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE };
/* if functions */
static void ep_if_init (void *);
static int ep_if_ioctl (struct ifnet *, u_long, caddr_t);
static void ep_if_start (struct ifnet *);
static void ep_if_watchdog (struct ifnet *);
/* if_media functions */
static int ep_ifmedia_upd (struct ifnet *);
static void ep_ifmedia_sts (struct ifnet *, struct ifmediareq *);
static void epstop (struct ep_softc *);
static void epread (struct ep_softc *);
static int eeprom_rdy (struct ep_softc *);
#define EP_FTST(sc, f) (sc->stat & (f))
#define EP_FSET(sc, f) (sc->stat |= (f))
#define EP_FRST(sc, f) (sc->stat &= ~(f))
static int
eeprom_rdy(sc)
struct ep_softc *sc;
{
int i;
for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++) {
DELAY(100);
}
if (i >= MAX_EEPROMBUSY) {
printf("ep%d: eeprom failed to come ready.\n", sc->unit);
return (ENXIO);
}
return (0);
}
/*
* get_e: gets a 16 bits word from the EEPROM. we must have set the window
* before
*/
int
get_e(sc, offset, result)
struct ep_softc *sc;
u_int16_t offset;
u_int16_t *result;
{
if (eeprom_rdy(sc))
return (ENXIO);
outw(BASE + EP_W0_EEPROM_COMMAND,
(EEPROM_CMD_RD << sc->epb.cmd_off) | offset);
if (eeprom_rdy(sc))
return (ENXIO);
(*result) = inw(BASE + EP_W0_EEPROM_DATA);
return (0);
}
int
ep_get_macaddr(sc, addr)
struct ep_softc * sc;
u_char * addr;
{
int i;
u_int16_t result;
int error;
u_int16_t * macaddr;
macaddr = (u_int16_t *)addr;
GO_WINDOW(0);
for(i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) {
error = get_e(sc, i, &result);
if (error)
return (error);
macaddr[i] = htons(result);
}
return (0);
}
int
ep_alloc(device_t dev)
{
struct ep_softc * sc = device_get_softc(dev);
int rid;
int error = 0;
u_int16_t result;
rid = 0;
sc->iobase = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (!sc->iobase) {
device_printf(dev, "No I/O space?!\n");
error = ENXIO;
goto bad;
}
rid = 0;
sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
0, ~0, 1, RF_ACTIVE);
if (!sc->irq) {
device_printf(dev, "No irq?!\n");
error = ENXIO;
goto bad;
}
sc->dev = dev;
sc->unit = device_get_unit(dev);
sc->stat = 0; /* 16 bit access */
sc->ep_io_addr = rman_get_start(sc->iobase);
sc->ep_btag = rman_get_bustag(sc->iobase);
sc->ep_bhandle = rman_get_bushandle(sc->iobase);
sc->ep_connectors = 0;
sc->ep_connector = 0;
GO_WINDOW(0);
sc->epb.cmd_off = 0;
error = get_e(sc, EEPROM_PROD_ID, &result);
if (error)
goto bad;
sc->epb.prod_id = result;
error = get_e(sc, EEPROM_RESOURCE_CFG, &result);
if (error)
goto bad;
sc->epb.res_cfg = result;
bad:
return (error);
}
void
ep_get_media(sc)
struct ep_softc * sc;
{
u_int16_t config;
GO_WINDOW(0);
config = inw(BASE + EP_W0_CONFIG_CTRL);
if (config & IS_AUI)
sc->ep_connectors |= AUI;
if (config & IS_BNC)
sc->ep_connectors |= BNC;
if (config & IS_UTP)
sc->ep_connectors |= UTP;
if (!(sc->ep_connectors & 7)) {
if (bootverbose)
device_printf(sc->dev, "no connectors!\n");
}
/*
* This works for most of the cards so we'll do it here.
* The cards that require something different can override
* this later on.
*/
sc->ep_connector = inw(BASE + EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS;
return;
}
void
ep_free(device_t dev)
{
struct ep_softc * sc = device_get_softc(dev);
if (sc->iobase)
bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase);
if (sc->irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
return;
}
int
ep_attach(sc)
struct ep_softc * sc;
{
struct ifnet * ifp = NULL;
struct ifmedia * ifm = NULL;
u_short * p;
int i;
int attached;
int error;
sc->gone = 0;
error = ep_get_macaddr(sc, (u_char *)&sc->arpcom.ac_enaddr);
if (error) {
device_printf(sc->dev, "Unable to retrieve Ethernet address!\n");
return (ENXIO);
}
/*
* Setup the station address
*/
p = (u_short *)&sc->arpcom.ac_enaddr;
GO_WINDOW(2);
for (i = 0; i < 3; i++) {
outw(BASE + EP_W2_ADDR_0 + (i * 2), ntohs(p[i]));
}
device_printf(sc->dev, "Ethernet address %6D\n",
sc->arpcom.ac_enaddr, ":");
ifp = &sc->arpcom.ac_if;
attached = (ifp->if_softc != 0);
ifp->if_softc = sc;
ifp->if_unit = sc->unit;
ifp->if_name = "ep";
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_output = ether_output;
ifp->if_start = ep_if_start;
ifp->if_ioctl = ep_if_ioctl;
ifp->if_watchdog = ep_if_watchdog;
ifp->if_init = ep_if_init;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
if (!sc->epb.mii_trans) {
ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts);
if (sc->ep_connectors & AUI)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL);
if (sc->ep_connectors & UTP)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
if (sc->ep_connectors & BNC)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_2, 0, NULL);
if (!sc->ep_connectors)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(&sc->ifmedia, IFM_ETHER|ep_media2if_media[sc->ep_connector]);
ifm = &sc->ifmedia;
ifm->ifm_media = ifm->ifm_cur->ifm_media;
ep_ifmedia_upd(ifp);
}
if (!attached)
ether_ifattach(ifp, sc->arpcom.ac_enaddr);
#ifdef EP_LOCAL_STATS
sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc =
sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
#endif
EP_FSET(sc, F_RX_FIRST);
sc->top = sc->mcur = 0;
epstop(sc);
return 0;
}
/*
* The order in here seems important. Otherwise we may not receive
* interrupts. ?!
*/
static void
ep_if_init(xsc)
void *xsc;
{
struct ep_softc *sc = xsc;
register struct ifnet *ifp = &sc->arpcom.ac_if;
int s, i;
if (sc->gone)
return;
/*
if (ifp->if_addrlist == (struct ifaddr *) 0)
return;
*/
s = splimp();
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
GO_WINDOW(0);
outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
GO_WINDOW(4);
outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP);
GO_WINDOW(0);
/* Disable the card */
outw(BASE + EP_W0_CONFIG_CTRL, 0);
/* Enable the card */
outw(BASE + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
GO_WINDOW(2);
/* Reload the ether_addr. */
for (i = 0; i < 6; i++)
outb(BASE + EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]);
outw(BASE + EP_COMMAND, RX_RESET);
outw(BASE + EP_COMMAND, TX_RESET);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
/* Window 1 is operating window */
GO_WINDOW(1);
for (i = 0; i < 31; i++)
inb(BASE + EP_W1_TX_STATUS);
/* get rid of stray intr's */
outw(BASE + EP_COMMAND, ACK_INTR | 0xff);
outw(BASE + EP_COMMAND, SET_RD_0_MASK | S_5_INTS);
outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS);
if (ifp->if_flags & IFF_PROMISC)
outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
FIL_GROUP | FIL_BRDCST | FIL_ALL);
else
outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
FIL_GROUP | FIL_BRDCST);
if (!sc->epb.mii_trans) {
ep_ifmedia_upd(ifp);
}
outw(BASE + EP_COMMAND, RX_ENABLE);
outw(BASE + EP_COMMAND, TX_ENABLE);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE; /* just in case */
#ifdef EP_LOCAL_STATS
sc->rx_no_first = sc->rx_no_mbuf =
sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0;
#endif
EP_FSET(sc, F_RX_FIRST);
if (sc->top) {
m_freem(sc->top);
sc->top = sc->mcur = 0;
}
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
outw(BASE + EP_COMMAND, SET_TX_START_THRESH | 16);
/*
* Store up a bunch of mbuf's for use later. (MAX_MBS). First we free up
* any that we had in case we're being called from intr or somewhere
* else.
*/
GO_WINDOW(1);
ep_if_start(ifp);
splx(s);
}
static void
ep_if_start(ifp)
struct ifnet *ifp;
{
struct ep_softc *sc = ifp->if_softc;
u_int len;
struct mbuf *m;
struct mbuf *top;
int s, pad;
if (sc->gone) {
return;
}
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
if (ifp->if_flags & IFF_OACTIVE) {
return;
}
startagain:
/* Sneak a peek at the next packet */
m = ifp->if_snd.ifq_head;
if (m == 0) {
return;
}
for (len = 0, top = m; m; m = m->m_next)
len += m->m_len;
pad = (4 - len) & 3;
/*
* The 3c509 automatically pads short packets to minimum ethernet length,
* but we drop packets that are too large. Perhaps we should truncate
* them instead?
*/
if (len + pad > ETHER_MAX_LEN) {
/* packet is obviously too large: toss it */
++ifp->if_oerrors;
IF_DEQUEUE(&ifp->if_snd, m);
m_freem(m);
goto readcheck;
}
if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) {
/* no room in FIFO */
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
/* make sure */
if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) {
ifp->if_flags |= IFF_OACTIVE;
return;
}
} else {
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE);
}
IF_DEQUEUE(&ifp->if_snd, m);
s = splhigh();
outw(BASE + EP_W1_TX_PIO_WR_1, len);
outw(BASE + EP_W1_TX_PIO_WR_1, 0x0); /* Second dword meaningless */
if (EP_FTST(sc, F_ACCESS_32_BITS)) {
for (top = m; m != 0; m = m->m_next) {
if (m->m_len > 3)
outsl(BASE + EP_W1_TX_PIO_WR_1,
mtod(m, caddr_t), m->m_len / 4);
if (m->m_len & 3)
outsb(BASE + EP_W1_TX_PIO_WR_1,
mtod(m, caddr_t) + (m->m_len & (~3)), m->m_len & 3);
}
} else {
for (top = m; m != 0; m = m->m_next) {
if (m->m_len > 1)
outsw(BASE + EP_W1_TX_PIO_WR_1,
mtod(m, caddr_t), m->m_len / 2);
if (m->m_len & 1)
outb(BASE + EP_W1_TX_PIO_WR_1,
*(mtod(m, caddr_t) + m->m_len - 1));
}
}
while (pad--)
outb(BASE + EP_W1_TX_PIO_WR_1, 0); /* Padding */
splx(s);
BPF_MTAP(ifp, top);
ifp->if_timer = 2;
ifp->if_opackets++;
m_freem(top);
/*
* Is another packet coming in? We don't want to overflow the tiny RX
* fifo.
*/
readcheck:
if (inw(BASE + EP_W1_RX_STATUS) & RX_BYTES_MASK) {
/*
* we check if we have packets left, in that case we prepare to come
* back later
*/
if (ifp->if_snd.ifq_head) {
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
}
return;
}
goto startagain;
}
void
ep_intr(arg)
void *arg;
{
struct ep_softc *sc;
register int status;
struct ifnet *ifp;
int x;
x = splbio();
sc = (struct ep_softc *)arg;
/*
* quick fix: Try to detect an interrupt when the card goes away.
*/
if (sc->gone || inw(BASE + EP_STATUS) == 0xffff) {
splx(x);
return;
}
ifp = &sc->arpcom.ac_if;
outw(BASE + EP_COMMAND, SET_INTR_MASK); /* disable all Ints */
rescan:
while ((status = inw(BASE + EP_STATUS)) & S_5_INTS) {
/* first acknowledge all interrupt sources */
outw(BASE + EP_COMMAND, ACK_INTR | (status & S_MASK));
if (status & (S_RX_COMPLETE | S_RX_EARLY))
epread(sc);
if (status & S_TX_AVAIL) {
/* we need ACK */
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
GO_WINDOW(1);
inw(BASE + EP_W1_FREE_TX);
ep_if_start(ifp);
}
if (status & S_CARD_FAILURE) {
ifp->if_timer = 0;
#ifdef EP_LOCAL_STATS
printf("\nep%d:\n\tStatus: %x\n", sc->unit, status);
GO_WINDOW(4);
printf("\tFIFO Diagnostic: %x\n", inw(BASE + EP_W4_FIFO_DIAG));
printf("\tStat: %x\n", sc->stat);
printf("\tIpackets=%d, Opackets=%d\n",
ifp->if_ipackets, ifp->if_opackets);
printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf,
sc->rx_overrunl, sc->tx_underrun);
#else
#ifdef DIAGNOSTIC
printf("ep%d: Status: %x (input buffer overflow)\n", sc->unit, status);
#else
++ifp->if_ierrors;
#endif
#endif
ep_if_init(sc);
splx(x);
return;
}
if (status & S_TX_COMPLETE) {
ifp->if_timer = 0;
/* we need ACK. we do it at the end */
/*
* We need to read TX_STATUS until we get a 0 status in order to
* turn off the interrupt flag.
*/
while ((status = inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE) {
if (status & TXS_SUCCES_INTR_REQ);
else if (status & (TXS_UNDERRUN | TXS_JABBER | TXS_MAX_COLLISION)) {
outw(BASE + EP_COMMAND, TX_RESET);
if (status & TXS_UNDERRUN) {
#ifdef EP_LOCAL_STATS
sc->tx_underrun++;
#endif
} else {
if (status & TXS_JABBER);
else /* TXS_MAX_COLLISION - we shouldn't get here */
++ifp->if_collisions;
}
++ifp->if_oerrors;
outw(BASE + EP_COMMAND, TX_ENABLE);
/*
* To have a tx_avail_int but giving the chance to the
* Reception
*/
if (ifp->if_snd.ifq_head) {
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
}
}
outb(BASE + EP_W1_TX_STATUS, 0x0); /* pops up the next
* status */
} /* while */
ifp->if_flags &= ~IFF_OACTIVE;
GO_WINDOW(1);
inw(BASE + EP_W1_FREE_TX);
ep_if_start(ifp);
} /* end TX_COMPLETE */
}
outw(BASE + EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */
if ((status = inw(BASE + EP_STATUS)) & S_5_INTS)
goto rescan;
/* re-enable Ints */
outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS);
splx(x);
}
static void
epread(sc)
register struct ep_softc *sc;
{
struct mbuf *top, *mcur, *m;
struct ifnet *ifp;
int lenthisone;
short rx_fifo2, status;
register short rx_fifo;
ifp = &sc->arpcom.ac_if;
status = inw(BASE + EP_W1_RX_STATUS);
read_again:
if (status & ERR_RX) {
++ifp->if_ierrors;
if (status & ERR_RX_OVERRUN) {
/*
* we can think the rx latency is actually greather than we
* expect
*/
#ifdef EP_LOCAL_STATS
if (EP_FTST(sc, F_RX_FIRST))
sc->rx_overrunf++;
else
sc->rx_overrunl++;
#endif
}
goto out;
}
rx_fifo = rx_fifo2 = status & RX_BYTES_MASK;
if (EP_FTST(sc, F_RX_FIRST)) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (!m)
goto out;
if (rx_fifo >= MINCLSIZE)
MCLGET(m, M_DONTWAIT);
sc->top = sc->mcur = top = m;
#define EROUND ((sizeof(struct ether_header) + 3) & ~3)
#define EOFF (EROUND - sizeof(struct ether_header))
top->m_data += EOFF;
/* Read what should be the header. */
insw(BASE + EP_W1_RX_PIO_RD_1,
mtod(top, caddr_t), sizeof(struct ether_header) / 2);
top->m_len = sizeof(struct ether_header);
rx_fifo -= sizeof(struct ether_header);
sc->cur_len = rx_fifo2;
} else {
/* come here if we didn't have a complete packet last time */
top = sc->top;
m = sc->mcur;
sc->cur_len += rx_fifo2;
}
/* Reads what is left in the RX FIFO */
while (rx_fifo > 0) {
lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
if (lenthisone == 0) { /* no room in this one */
mcur = m;
MGET(m, M_DONTWAIT, MT_DATA);
if (!m)
goto out;
if (rx_fifo >= MINCLSIZE)
MCLGET(m, M_DONTWAIT);
m->m_len = 0;
mcur->m_next = m;
lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
}
if (EP_FTST(sc, F_ACCESS_32_BITS)) { /* default for EISA configured cards*/
insl(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len,
lenthisone / 4);
m->m_len += (lenthisone & ~3);
if (lenthisone & 3)
insb(BASE + EP_W1_RX_PIO_RD_1,
mtod(m, caddr_t) + m->m_len,
lenthisone & 3);
m->m_len += (lenthisone & 3);
} else {
insw(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len,
lenthisone / 2);
m->m_len += lenthisone;
if (lenthisone & 1)
*(mtod(m, caddr_t) + m->m_len - 1) = inb(BASE + EP_W1_RX_PIO_RD_1);
}
rx_fifo -= lenthisone;
}
if (status & ERR_RX_INCOMPLETE) { /* we haven't received the complete
* packet */
sc->mcur = m;
#ifdef EP_LOCAL_STATS
sc->rx_no_first++; /* to know how often we come here */
#endif
EP_FRST(sc, F_RX_FIRST);
if (!((status = inw(BASE + EP_W1_RX_STATUS)) & ERR_RX_INCOMPLETE)) {
/* we see if by now, the packet has completly arrived */
goto read_again;
}
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH);
return;
}
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
++ifp->if_ipackets;
EP_FSET(sc, F_RX_FIRST);
top->m_pkthdr.rcvif = &sc->arpcom.ac_if;
top->m_pkthdr.len = sc->cur_len;
(*ifp->if_input)(ifp, top);
sc->top = 0;
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
return;
out:
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
if (sc->top) {
m_freem(sc->top);
sc->top = 0;
#ifdef EP_LOCAL_STATS
sc->rx_no_mbuf++;
#endif
}
EP_FSET(sc, F_RX_FIRST);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
}
static int
ep_ifmedia_upd(ifp)
struct ifnet * ifp;
{
struct ep_softc * sc = ifp->if_softc;
int i = 0, j;
GO_WINDOW(0);
outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
GO_WINDOW(4);
outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP);
GO_WINDOW(0);
switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) {
case IFM_10_T:
if (sc->ep_connectors & UTP) {
i = ACF_CONNECTOR_UTP;
GO_WINDOW(4);
outw(BASE + EP_W4_MEDIA_TYPE, ENABLE_UTP);
}
break;
case IFM_10_2:
if (sc->ep_connectors & BNC) {
i = ACF_CONNECTOR_BNC;
outw(BASE + EP_COMMAND, START_TRANSCEIVER);
DELAY(DELAY_MULTIPLE * 1000);
}
break;
case IFM_10_5:
if (sc->ep_connectors & AUI)
i = ACF_CONNECTOR_AUI;
break;
default:
i = sc->ep_connector;
device_printf(sc->dev,
"strange connector type in EEPROM: assuming AUI\n");
}
GO_WINDOW(0);
j = inw(BASE + EP_W0_ADDRESS_CFG) & 0x3fff;
outw(BASE + EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS));
return (0);
}
static void
ep_ifmedia_sts(ifp, ifmr)
struct ifnet * ifp;
struct ifmediareq * ifmr;
{
struct ep_softc * sc = ifp->if_softc;
ifmr->ifm_active = sc->ifmedia.ifm_media;
return;
}
static int
ep_if_ioctl(ifp, cmd, data)
struct ifnet * ifp;
u_long cmd;
caddr_t data;
{
struct ep_softc * sc = ifp->if_softc;
struct ifreq * ifr = (struct ifreq *)data;
int s, error = 0;
s = splimp();
switch (cmd) {
case SIOCSIFFLAGS:
if (((ifp->if_flags & IFF_UP) == 0) &&
(ifp->if_flags & IFF_RUNNING)) {
ifp->if_flags &= ~IFF_RUNNING;
epstop(sc);
} else {
/* reinitialize card on any parameter change */
ep_if_init(sc);
}
break;
#ifdef notdef
case SIOCGHWADDR:
bcopy((caddr_t) sc->sc_addr, (caddr_t) & ifr->ifr_data,
sizeof(sc->sc_addr));
break;
#endif
case SIOCADDMULTI:
case SIOCDELMULTI:
/*
* The Etherlink III has no programmable multicast
* filter. We always initialize the card to be
* promiscuous to multicast, since we're always a
* member of the ALL-SYSTEMS group, so there's no
* need to process SIOC*MULTI requests.
*/
error = 0;
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
if (!sc->epb.mii_trans) {
error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd);
} else {
error = EINVAL;
}
break;
default:
error = ether_ioctl(ifp, cmd, data);
break;
}
(void)splx(s);
return (error);
}
static void
ep_if_watchdog(ifp)
struct ifnet *ifp;
{
struct ep_softc *sc = ifp->if_softc;
/*
printf("ep: watchdog\n");
log(LOG_ERR, "ep%d: watchdog\n", ifp->if_unit);
ifp->if_oerrors++;
*/
if (sc->gone) {
return;
}
ifp->if_flags &= ~IFF_OACTIVE;
ep_if_start(ifp);
ep_intr(ifp->if_softc);
}
static void
epstop(sc)
struct ep_softc *sc;
{
if (sc->gone) {
return;
}
outw(BASE + EP_COMMAND, RX_DISABLE);
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, TX_DISABLE);
outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
DELAY(800);
outw(BASE + EP_COMMAND, RX_RESET);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, TX_RESET);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, C_INTR_LATCH);
outw(BASE + EP_COMMAND, SET_RD_0_MASK);
outw(BASE + EP_COMMAND, SET_INTR_MASK);
outw(BASE + EP_COMMAND, SET_RX_FILTER);
}
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