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freebsd-skq/sys/dev/ep/if_ep.c
imp f5e8ef092a Commit part of the patch that I have for card eject problems with the 
ep driver.  The rest of the patch will wait until I can put the time
into it to get it righter than the kludge it is.

This protects us against card eject problems at all times,e xecpt when
we're in the epintr ISR.
2001-06-05 22:29:16 +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 __P((void *));
static int ep_if_ioctl __P((struct ifnet *, u_long, caddr_t));
static void ep_if_start __P((struct ifnet *));
static void ep_if_watchdog __P((struct ifnet *));
/* if_media functions */
static int ep_ifmedia_upd __P((struct ifnet *));
static void ep_ifmedia_sts __P((struct ifnet *, struct ifmediareq *));
static void epstop __P((struct ep_softc *));
static void epread __P((struct ep_softc *));
static int eeprom_rdy __P((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 (0);
}
return (1);
}
/*
* get_e: gets a 16 bits word from the EEPROM. we must have set the window
* before
*/
u_int16_t
get_e(sc, offset)
struct ep_softc *sc;
u_int16_t offset;
{
if (!eeprom_rdy(sc))
return (0);
outw(BASE + EP_W0_EEPROM_COMMAND, (EEPROM_CMD_RD << sc->epb.cmd_off) | offset);
if (!eeprom_rdy(sc))
return (0);
return (inw(BASE + EP_W0_EEPROM_DATA));
}
void
ep_get_macaddr(sc, addr)
struct ep_softc * sc;
u_char * addr;
{
int i;
u_int16_t * macaddr = (u_int16_t *)addr;
GO_WINDOW(0);
for(i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) {
macaddr[i] = htons(get_e(sc, i));
}
return;
}
int
ep_alloc(device_t dev)
{
struct ep_softc * sc = device_get_softc(dev);
int rid;
int error = 0;
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;
sc->epb.prod_id = get_e(sc, EEPROM_PROD_ID);
sc->epb.res_cfg = get_e(sc, EEPROM_RESOURCE_CFG);
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;
sc->gone = 0;
ep_get_macaddr(sc, (u_char *)&sc->arpcom.ac_enaddr);
/*
* 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, ETHER_BPF_SUPPORTED);
#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);
if (ifp->if_bpf) {
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;
if (sc->gone)
return;
/*
* quick fix: Try to detect an interrupt when the card goes away.
*/
if (inw(BASE + EP_STATUS) == 0xffff)
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);
continue;
}
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 ether_header *eh;
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;
eh = mtod(top, struct ether_header *);
m_adj(top, sizeof(struct ether_header));
ether_input(ifp, eh, 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 SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, cmd, data);
break;
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 = EINVAL;
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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