Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/dev/ic/tulip.c

2906 lines
68 KiB
C
Raw Blame History

/* $NetBSD: tulip.c,v 1.6 1999/09/09 21:48:18 thorpej Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Device driver for the Digital Semiconductor ``Tulip'' (21x4x)
* Ethernet controller family, and a variety of clone chips.
*/
#include "opt_inet.h"
#include "opt_ns.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <vm/vm.h> /* for PAGE_SIZE */
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/ic/tulipreg.h>
#include <dev/ic/tulipvar.h>
/*
* The following tables compute the transmit threshold mode. We start
* at index 0. When ever we get a transmit underrun, we increment our
* index, falling back if we encounter the NULL terminator.
*
* Note: Store and forward mode is only available on the 100mbps chips
* (21140 and higher).
*/
const struct tulip_txthresh_tab tlp_10_txthresh_tab[] = {
{ OPMODE_TR_72, "72 bytes" },
{ OPMODE_TR_96, "96 bytes" },
{ OPMODE_TR_128, "128 bytes" },
{ OPMODE_TR_160, "160 bytes" },
{ 0, NULL },
};
const struct tulip_txthresh_tab tlp_10_100_txthresh_tab[] = {
{ OPMODE_TR_72, "72/128 bytes" },
{ OPMODE_TR_96, "96/256 bytes" },
{ OPMODE_TR_128, "128/512 bytes" },
{ OPMODE_TR_160, "160/1024 bytes" },
{ OPMODE_SF, "store and forward mode" },
{ 0, NULL },
};
#define TXTH_72 0
#define TXTH_96 1
#define TXTH_128 2
#define TXTH_160 3
#define TXTH_SF 4
/*
* The Winbond 89C840F does transmit threshold control totally
* differently. It simply has a 7-bit field which indicates
* the threshold:
*
* txth = ((OPMODE & OPMODE_WINB_TTH) >> OPMODE_WINB_TTH_SHIFT) * 16;
*
* However, we just do Store-and-Forward mode on these chips, since
* the DMA engines seem to be flaky.
*/
const struct tulip_txthresh_tab tlp_winb_txthresh_tab[] = {
{ 0, "store and forward mode" },
{ 0, NULL },
};
#define TXTH_WINB_SF 0
void tlp_start __P((struct ifnet *));
void tlp_watchdog __P((struct ifnet *));
int tlp_ioctl __P((struct ifnet *, u_long, caddr_t));
void tlp_shutdown __P((void *));
void tlp_reset __P((struct tulip_softc *));
int tlp_init __P((struct tulip_softc *));
void tlp_rxdrain __P((struct tulip_softc *));
void tlp_stop __P((struct tulip_softc *, int));
int tlp_add_rxbuf __P((struct tulip_softc *, int));
void tlp_idle __P((struct tulip_softc *, u_int32_t));
void tlp_srom_idle __P((struct tulip_softc *));
void tlp_filter_setup __P((struct tulip_softc *));
void tlp_winb_filter_setup __P((struct tulip_softc *));
void tlp_rxintr __P((struct tulip_softc *));
void tlp_txintr __P((struct tulip_softc *));
void tlp_mii_tick __P((void *));
void tlp_mii_statchg __P((struct device *));
void tlp_winb_mii_statchg __P((struct device *));
void tlp_mii_getmedia __P((struct tulip_softc *, struct ifmediareq *));
int tlp_mii_setmedia __P((struct tulip_softc *));
void tlp_sio_mii_sync __P((struct tulip_softc *));
void tlp_sio_mii_sendbits __P((struct tulip_softc *, u_int32_t, int));
int tlp_sio_mii_readreg __P((struct device *, int, int));
void tlp_sio_mii_writereg __P((struct device *, int, int, int));
int tlp_pnic_mii_readreg __P((struct device *, int, int));
void tlp_pnic_mii_writereg __P((struct device *, int, int, int));
u_int32_t tlp_crc32 __P((const u_int8_t *, size_t));
#define tlp_mchash(addr) (tlp_crc32((addr), ETHER_ADDR_LEN) & \
(TULIP_MCHASHSIZE - 1))
#ifdef TLP_DEBUG
#define DPRINTF(sc, x) if ((sc)->sc_ethercom.ec_if.if_flags & IFF_DEBUG) \
printf x
#else
#define DPRINTF(sc, x) /* nothing */
#endif
/*
* tlp_attach:
*
* Attach a Tulip interface to the system.
*/
void
tlp_attach(sc, name, enaddr)
struct tulip_softc *sc;
const char *name;
const u_int8_t *enaddr;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
int i, rseg, error;
bus_dma_segment_t seg;
/*
* NOTE: WE EXPECT THE FRONT-END TO INITIALIZE sc_regshift!
*/
/*
* Setup the transmit threshold table.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_DE425:
case TULIP_CHIP_21040:
case TULIP_CHIP_21041:
sc->sc_txth = tlp_10_txthresh_tab;
break;
default:
sc->sc_txth = tlp_10_100_txthresh_tab;
break;
}
/*
* Setup the filter setup function.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_WB89C840F:
sc->sc_filter_setup = tlp_winb_filter_setup;
break;
default:
sc->sc_filter_setup = tlp_filter_setup;
break;
}
/*
* Set up the media status change function.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_WB89C840F:
sc->sc_statchg = tlp_winb_mii_statchg;
break;
default:
sc->sc_statchg = tlp_mii_statchg;
break;
}
/*
* Set up various chip-specific quirks.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_82C168:
case TULIP_CHIP_82C169:
/*
* These chips seem to have busted DMA engines; just put them
* in Store-and-Forward mode from the get-go.
*/
sc->sc_txthresh = TXTH_SF;
break;
case TULIP_CHIP_WB89C840F:
sc->sc_flags |= TULIPF_IC_FS;
break;
default:
/* Nothing. */
}
SIMPLEQ_INIT(&sc->sc_txfreeq);
SIMPLEQ_INIT(&sc->sc_txdirtyq);
/*
* Allocate the control data structures, and create and load the
* DMA map for it.
*/
if ((error = bus_dmamem_alloc(sc->sc_dmat,
sizeof(struct tulip_control_data), PAGE_SIZE, 0, &seg, 1, &rseg,
0)) != 0) {
printf("%s: unable to allocate control data, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_0;
}
if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
sizeof(struct tulip_control_data), (caddr_t *)&sc->sc_control_data,
BUS_DMA_COHERENT)) != 0) {
printf("%s: unable to map control data, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_1;
}
if ((error = bus_dmamap_create(sc->sc_dmat,
sizeof(struct tulip_control_data), 1,
sizeof(struct tulip_control_data), 0, 0, &sc->sc_cddmamap)) != 0) {
printf("%s: unable to create control data DMA map, "
"error = %d\n", sc->sc_dev.dv_xname, error);
goto fail_2;
}
if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_cddmamap,
sc->sc_control_data, sizeof(struct tulip_control_data), NULL,
0)) != 0) {
printf("%s: unable to load control data DMA map, error = %d\n",
sc->sc_dev.dv_xname, error);
goto fail_3;
}
/*
* Create the transmit buffer DMA maps.
*/
for (i = 0; i < TULIP_TXQUEUELEN; i++) {
if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES,
TULIP_NTXSEGS, MCLBYTES, 0, 0,
&sc->sc_txsoft[i].txs_dmamap)) != 0) {
printf("%s: unable to create tx DMA map %d, "
"error = %d\n", sc->sc_dev.dv_xname, i, error);
goto fail_4;
}
}
/*
* Create the recieve buffer DMA maps.
*/
for (i = 0; i < TULIP_NRXDESC; i++) {
if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1,
MCLBYTES, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) {
printf("%s: unable to create rx DMA map %d, "
"error = %d\n", sc->sc_dev.dv_xname, i, error);
goto fail_5;
}
sc->sc_rxsoft[i].rxs_mbuf = NULL;
}
/*
* Reset the chip to a known state.
*/
tlp_reset(sc);
/* Announce ourselves. */
printf("%s: %s%sEthernet address %s\n", sc->sc_dev.dv_xname,
name != NULL ? name : "", name != NULL ? ", " : "",
ether_sprintf(enaddr));
/*
* Initialize our media structures. This may probe the MII, if
* present.
*/
(*sc->sc_mediasw->tmsw_init)(sc);
ifp = &sc->sc_ethercom.ec_if;
strcpy(ifp->if_xname, sc->sc_dev.dv_xname);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = tlp_ioctl;
ifp->if_start = tlp_start;
ifp->if_watchdog = tlp_watchdog;
/*
* Attach the interface.
*/
if_attach(ifp);
ether_ifattach(ifp, enaddr);
#if NBPFILTER > 0
bpfattach(&sc->sc_ethercom.ec_if.if_bpf, ifp, DLT_EN10MB,
sizeof(struct ether_header));
#endif
/*
* Make sure the interface is shutdown during reboot.
*/
sc->sc_sdhook = shutdownhook_establish(tlp_shutdown, sc);
if (sc->sc_sdhook == NULL)
printf("%s: WARNING: unable to establish shutdown hook\n",
sc->sc_dev.dv_xname);
return;
/*
* Free any resources we've allocated during the failed attach
* attempt. Do this in reverse order and fall through.
*/
fail_5:
for (i = 0; i < TULIP_NRXDESC; i++) {
if (sc->sc_rxsoft[i].rxs_dmamap != NULL)
bus_dmamap_destroy(sc->sc_dmat,
sc->sc_rxsoft[i].rxs_dmamap);
}
fail_4:
for (i = 0; i < TULIP_TXQUEUELEN; i++) {
if (sc->sc_txsoft[i].txs_dmamap != NULL)
bus_dmamap_destroy(sc->sc_dmat,
sc->sc_txsoft[i].txs_dmamap);
}
bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap);
fail_3:
bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap);
fail_2:
bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data,
sizeof(struct tulip_control_data));
fail_1:
bus_dmamem_free(sc->sc_dmat, &seg, rseg);
fail_0:
return;
}
/*
* tlp_shutdown:
*
* Make sure the interface is stopped at reboot time.
*/
void
tlp_shutdown(arg)
void *arg;
{
struct tulip_softc *sc = arg;
tlp_stop(sc, 1);
}
/*
* tlp_start: [ifnet interface function]
*
* Start packet transmission on the interface.
*/
void
tlp_start(ifp)
struct ifnet *ifp;
{
struct tulip_softc *sc = ifp->if_softc;
struct mbuf *m0, *m;
struct tulip_txsoft *txs, *last_txs;
bus_dmamap_t dmamap;
int error, firsttx, nexttx, lasttx, ofree, seg;
DPRINTF(sc, ("%s: tlp_start: sc_flags 0x%08x, if_flags 0x%08x\n",
sc->sc_dev.dv_xname, sc->sc_flags, ifp->if_flags));
/*
* If we want a filter setup, it means no more descriptors were
* available for the setup routine. Let it get a chance to wedge
* itself into the ring.
*/
if (sc->sc_flags & TULIPF_WANT_SETUP)
ifp->if_flags |= IFF_OACTIVE;
if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
return;
/*
* Remember the previous number of free descriptors and
* the first descriptor we'll use.
*/
ofree = sc->sc_txfree;
firsttx = sc->sc_txnext;
DPRINTF(sc, ("%s: tlp_start: txfree %d, txnext %d\n",
sc->sc_dev.dv_xname, ofree, firsttx));
/*
* Loop through the send queue, setting up transmit descriptors
* until we drain the queue, or use up all available transmit
* descriptors.
*/
while ((txs = SIMPLEQ_FIRST(&sc->sc_txfreeq)) != NULL &&
sc->sc_txfree != 0) {
/*
* Grab a packet off the queue.
*/
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
dmamap = txs->txs_dmamap;
/*
* Load the DMA map. If this fails, the packet either
* didn't fit in the alloted number of segments, or we were
* short on resources. In this case, we'll copy and try
* again.
*/
if (bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0,
BUS_DMA_NOWAIT) != 0) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
printf("%s: unable to allocate Tx mbuf\n",
sc->sc_dev.dv_xname);
IF_PREPEND(&ifp->if_snd, m0);
break;
}
if (m0->m_pkthdr.len > MHLEN) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
printf("%s: unable to allocate Tx "
"cluster\n", sc->sc_dev.dv_xname);
m_freem(m);
IF_PREPEND(&ifp->if_snd, m0);
break;
}
}
m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, caddr_t));
m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len;
m_freem(m0);
m0 = m;
error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap,
m0, BUS_DMA_NOWAIT);
if (error) {
printf("%s: unable to load Tx buffer, "
"error = %d\n", sc->sc_dev.dv_xname, error);
IF_PREPEND(&ifp->if_snd, m0);
break;
}
}
/*
* Ensure we have enough descriptors free to describe
* the packet.
*/
if (dmamap->dm_nsegs > sc->sc_txfree) {
/*
* Not enough free descriptors to transmit this
* packet. We haven't committed to anything yet,
* so just unload the DMA map, put the packet
* back on the queue, and punt. Notify the upper
* layer that there are no more slots left.
*
* XXX We could allocate an mbuf and copy, but
* XXX it is worth it?
*/
ifp->if_flags |= IFF_OACTIVE;
bus_dmamap_unload(sc->sc_dmat, dmamap);
IF_PREPEND(&ifp->if_snd, m0);
break;
}
/*
* WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET.
*/
/* Sync the DMA map. */
bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize,
BUS_DMASYNC_PREWRITE);
/*
* Initialize the transmit descriptors.
*/
for (nexttx = sc->sc_txnext, seg = 0;
seg < dmamap->dm_nsegs;
seg++, nexttx = TULIP_NEXTTX(nexttx)) {
/*
* If this is the first descriptor we're
* enqueueing, don't set the OWN bit just
* yet. That could cause a race condition.
* We'll do it below.
*/
sc->sc_txdescs[nexttx].td_status =
(nexttx == firsttx) ? 0 : TDSTAT_OWN;
sc->sc_txdescs[nexttx].td_bufaddr1 =
dmamap->dm_segs[seg].ds_addr;
sc->sc_txdescs[nexttx].td_ctl =
(dmamap->dm_segs[seg].ds_len << TDCTL_SIZE1_SHIFT) |
TDCTL_CH;
lasttx = nexttx;
}
/* Set `first segment' and `last segment' appropriately. */
sc->sc_txdescs[sc->sc_txnext].td_ctl |= TDCTL_Tx_FS;
sc->sc_txdescs[lasttx].td_ctl |= TDCTL_Tx_LS;
#ifdef TLP_DEBUG
if (ifp->if_flags & IFF_DEBUG) {
printf(" txsoft %p trainsmit chain:\n", txs);
for (seg = sc->sc_txnext;; seg = TULIP_NEXTTX(seg)) {
printf(" descriptor %d:\n", seg);
printf(" td_status: 0x%08x\n",
sc->sc_txdescs[seg].td_status);
printf(" td_ctl: 0x%08x\n",
sc->sc_txdescs[seg].td_ctl);
printf(" td_bufaddr1: 0x%08x\n",
sc->sc_txdescs[seg].td_bufaddr1);
printf(" td_bufaddr2: 0x%08x\n",
sc->sc_txdescs[seg].td_bufaddr2);
if (seg == lasttx)
break;
}
}
#endif
/* Sync the descriptors we're using. */
TULIP_CDTXSYNC(sc, sc->sc_txnext, dmamap->dm_nsegs,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
/*
* Store a pointer to the packet so we can free it later,
* and remember what txdirty will be once the packet is
* done.
*/
txs->txs_mbuf = m0;
txs->txs_firstdesc = sc->sc_txnext;
txs->txs_lastdesc = lasttx;
/* Advance the tx pointer. */
sc->sc_txfree -= dmamap->dm_nsegs;
sc->sc_txnext = nexttx;
SIMPLEQ_REMOVE_HEAD(&sc->sc_txfreeq, txs, txs_q);
SIMPLEQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q);
last_txs = txs;
#if NBPFILTER > 0
/*
* Pass the packet to any BPF listeners.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m0);
#endif /* NBPFILTER > 0 */
}
if (txs == NULL || sc->sc_txfree == 0) {
/* No more slots left; notify upper layer. */
ifp->if_flags |= IFF_OACTIVE;
}
if (sc->sc_txfree != ofree) {
DPRINTF(sc, ("%s: packets enqueued, IC on %d, OWN on %d\n",
sc->sc_dev.dv_xname, lasttx, firsttx));
/*
* Cause a transmit interrupt to happen on the
* last packet we enqueued.
*/
sc->sc_txdescs[lasttx].td_ctl |= TDCTL_Tx_IC;
TULIP_CDTXSYNC(sc, lasttx, 1,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
/*
* Some clone chips want IC on the *first* segment in
* the packet. Appease them.
*/
if ((sc->sc_flags & TULIPF_IC_FS) != 0 &&
last_txs->txs_firstdesc != lasttx) {
sc->sc_txdescs[last_txs->txs_firstdesc].td_ctl |=
TDCTL_Tx_IC;
TULIP_CDTXSYNC(sc, last_txs->txs_firstdesc, 1,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
}
/*
* The entire packet chain is set up. Give the
* first descriptor to the chip now.
*/
sc->sc_txdescs[firsttx].td_status |= TDSTAT_OWN;
TULIP_CDTXSYNC(sc, firsttx, 1,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
/* Wake up the transmitter. */
/* XXX USE AUTOPOLLING? */
TULIP_WRITE(sc, CSR_TXPOLL, TXPOLL_TPD);
/* Set a watchdog timer in case the chip flakes out. */
ifp->if_timer = 5;
}
}
/*
* tlp_watchdog: [ifnet interface function]
*
* Watchdog timer handler.
*/
void
tlp_watchdog(ifp)
struct ifnet *ifp;
{
struct tulip_softc *sc = ifp->if_softc;
int doing_setup, doing_transmit;
doing_setup = (sc->sc_flags & TULIPF_DOING_SETUP);
doing_transmit = (SIMPLEQ_FIRST(&sc->sc_txdirtyq) != NULL);
if (doing_setup && doing_transmit) {
printf("%s: filter setup and transmit timeout\n",
sc->sc_dev.dv_xname);
ifp->if_oerrors++;
} else if (doing_transmit) {
printf("%s: transmit timeout\n", sc->sc_dev.dv_xname);
ifp->if_oerrors++;
} else if (doing_setup)
printf("%s: filter setup timeout\n", sc->sc_dev.dv_xname);
else
printf("%s: spurious watchdog timeout\n", sc->sc_dev.dv_xname);
(void) tlp_init(sc);
/* Try to get more packets going. */
tlp_start(ifp);
}
/*
* tlp_ioctl: [ifnet interface function]
*
* Handle control requests from the operator.
*/
int
tlp_ioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct tulip_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct ifaddr *ifa = (struct ifaddr *)data;
int s, error = 0;
s = splnet();
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
if ((error = tlp_init(sc)) != 0)
break;
arp_ifinit(ifp, ifa);
break;
#endif /* INET */
#ifdef NS
case AF_NS:
{
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),
ifp->if_addrlen);
/* Set new address. */
error = tlp_init(sc);
break;
}
#endif /* NS */
default:
error = tlp_init(sc);
break;
}
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
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.
*/
tlp_stop(sc, 1);
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interfase it marked up and it is stopped, then
* start it.
*/
error = tlp_init(sc);
} else if ((ifp->if_flags & IFF_UP) != 0) {
/*
* Reset the interface to pick up changes in any other
* flags that affect the hardware state.
*/
error = tlp_init(sc);
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ethercom) :
ether_delmulti(ifr, &sc->sc_ethercom);
if (error == ENETRESET) {
/*
* Multicast list has changed. Set the filter
* accordingly.
*/
(*sc->sc_filter_setup)(sc);
error = 0;
}
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd);
break;
default:
error = EINVAL;
break;
}
/* Try to get more packets going. */
tlp_start(ifp);
splx(s);
return (error);
}
/*
* tlp_intr:
*
* Interrupt service routine.
*/
int
tlp_intr(arg)
void *arg;
{
struct tulip_softc *sc = arg;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
u_int32_t status, rxstatus, txstatus;
int handled = 0, txthresh;
DPRINTF(sc, ("%s: tlp_intr\n", sc->sc_dev.dv_xname));
for (;;) {
status = TULIP_READ(sc, CSR_STATUS);
if (status)
TULIP_WRITE(sc, CSR_STATUS, status);
if ((status & sc->sc_inten) == 0)
break;
handled = 1;
rxstatus = status & sc->sc_rxint_mask;
txstatus = status & sc->sc_txint_mask;
if (rxstatus) {
/* Grab new any new packets. */
tlp_rxintr(sc);
if (rxstatus & STATUS_RWT)
printf("%s: receive watchdog timeout\n",
sc->sc_dev.dv_xname);
if (rxstatus & STATUS_RU) {
printf("%s: receive ring overrun\n",
sc->sc_dev.dv_xname);
/* Get the receive process going again. */
tlp_idle(sc, OPMODE_SR);
TULIP_WRITE(sc, CSR_RXLIST,
TULIP_CDRXADDR(sc, sc->sc_rxptr));
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
TULIP_WRITE(sc, CSR_RXPOLL, RXPOLL_RPD);
break;
}
}
if (txstatus) {
/* Sweep up transmit descriptors. */
tlp_txintr(sc);
if (txstatus & STATUS_TJT)
printf("%s: transmit jabber timeout\n",
sc->sc_dev.dv_xname);
if (txstatus & STATUS_UNF) {
/*
* Increase our transmit threshold if
* another is available.
*/
txthresh = sc->sc_txthresh + 1;
if (sc->sc_txth[txthresh].txth_name != NULL) {
/* Idle the transmit process. */
tlp_idle(sc, OPMODE_ST);
sc->sc_txthresh = txthresh;
sc->sc_opmode &= ~(OPMODE_TR|OPMODE_SF);
sc->sc_opmode |=
sc->sc_txth[txthresh].txth_opmode;
printf("%s: transmit underrun; new "
"threshold: %s\n",
sc->sc_dev.dv_xname,
sc->sc_txth[txthresh].txth_name);
/*
* Set the new threshold and restart
* the transmit process.
*/
TULIP_WRITE(sc, CSR_OPMODE,
sc->sc_opmode);
}
/*
* XXX Log every Nth underrun from
* XXX now on?
*/
}
}
if (status & (STATUS_TPS|STATUS_RPS)) {
if (status & STATUS_TPS)
printf("%s: transmit process stopped\n",
sc->sc_dev.dv_xname);
if (status & STATUS_RPS)
printf("%s: receive process stopped\n",
sc->sc_dev.dv_xname);
(void) tlp_init(sc);
break;
}
if (status & STATUS_SE) {
const char *str;
switch (status & STATUS_EB) {
case STATUS_EB_PARITY:
str = "parity error";
break;
case STATUS_EB_MABT:
str = "master abort";
break;
case STATUS_EB_TABT:
str = "target abort";
break;
default:
str = "unknown error";
break;
}
printf("%s: fatal system error: %s\n",
sc->sc_dev.dv_xname, str);
(void) tlp_init(sc);
break;
}
/*
* Not handled:
*
* Transmit buffer unavailable -- normal
* condition, nothing to do, really.
*
* General purpose timer experied -- we don't
* use the general purpose timer.
*
* Early receive interrupt -- not available on
* all chips, we just use RI. We also only
* use single-segment receive DMA, so this
* is mostly useless.
*/
}
/* Try to get more packets going. */
tlp_start(ifp);
return (handled);
}
/*
* tlp_rxintr:
*
* Helper; handle receive interrupts.
*/
void
tlp_rxintr(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct ether_header *eh;
struct tulip_rxsoft *rxs;
struct mbuf *m;
u_int32_t rxstat;
int i, len;
for (i = sc->sc_rxptr;; i = TULIP_NEXTRX(i)) {
rxs = &sc->sc_rxsoft[i];
TULIP_CDRXSYNC(sc, i,
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
rxstat = sc->sc_rxdescs[i].td_status;
if (rxstat & TDSTAT_OWN) {
/*
* We have processed all of the receive buffers.
*/
break;
}
/*
* Make sure the packet fit in one buffer. This should
* always be the case. But the Lite-On PNIC, rev 33
* has an awful receive engine bug, which may require
* a very icky work-around.
*/
if ((rxstat & (TDSTAT_Rx_FS|TDSTAT_Rx_LS)) !=
(TDSTAT_Rx_FS|TDSTAT_Rx_LS)) {
printf("%s: incoming packet spilled, resetting\n",
sc->sc_dev.dv_xname);
(void) tlp_init(sc);
return;
}
/*
* If any collisions were seen on the wire, count one.
*/
if (rxstat & TDSTAT_Rx_CS)
ifp->if_collisions++;
/*
* If an error occured, update stats, clear the status
* word, and leave the packet buffer in place. It will
* simply be reused the next time the ring comes around.
*/
if (rxstat & TDSTAT_ES) {
#define PRINTERR(bit, str) \
if (rxstat & (bit)) \
printf("%s: receive error: %s\n", \
sc->sc_dev.dv_xname, str)
ifp->if_ierrors++;
PRINTERR(TDSTAT_Rx_DE, "descriptor error");
PRINTERR(TDSTAT_Rx_RF, "runt frame");
PRINTERR(TDSTAT_Rx_TL, "frame too long");
PRINTERR(TDSTAT_Rx_RE, "MII error");
PRINTERR(TDSTAT_Rx_DB, "dribbling bit");
PRINTERR(TDSTAT_Rx_CE, "CRC error");
#undef PRINTERR
TULIP_INIT_RXDESC(sc, i);
continue;
}
bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0,
rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD);
/*
* No errors; receive the packet. Note the Tulip
* includes the CRC with every packet; trim it.
*/
len = TDSTAT_Rx_LENGTH(rxstat) - ETHER_CRC_LEN;
#ifdef __NO_STRICT_ALIGNMENT
/*
* Allocate a new mbuf cluster. If that fails, we are
* out of memory, and must drop the packet and recycle
* the buffer that's already attached to this descriptor.
*/
m = rxs->rxs_mbuf;
if (tlp_add_rxbuf(sc, i) != 0) {
ifp->if_ierrors++;
TULIP_INIT_RXDESC(sc, i);
bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0,
rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
continue;
}
#else
/*
* The Tulip's receive buffers must be 4-byte aligned.
* But this means that the data after the Ethernet header
* is misaligned. We must allocate a new buffer and
* copy the data, shifted forward 2 bytes.
*/
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
dropit:
ifp->if_ierrors++;
TULIP_INIT_RXDESC(sc, i);
bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0,
rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
continue;
}
if (len > (MHLEN - 2)) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
goto dropit;
}
}
m->m_data += 2;
/*
* Note that we use clusters for incoming frames, so the
* buffer is virtually contiguous.
*/
memcpy(mtod(m, caddr_t), mtod(rxs->rxs_mbuf, caddr_t), len);
/* Allow the receive descriptor to continue using its mbuf. */
TULIP_INIT_RXDESC(sc, i);
bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0,
rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
#endif /* __NO_STRICT_ALIGNMENT */
ifp->if_ipackets++;
eh = mtod(m, struct ether_header *);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = len;
#if NBPFILTER > 0
/*
* Pass this up to any BPF listeners, but only
* pass it up the stack if its for us.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif /* NPBFILTER > 0 */
/*
* This test is outside the NBPFILTER block because
* on the 21140 we have to use Hash-Only mode due to
* a bug in the filter logic.
*/
if ((ifp->if_flags & IFF_PROMISC) != 0 ||
sc->sc_filtmode == TDCTL_Tx_FT_HASHONLY) {
if (memcmp(LLADDR(ifp->if_sadl), eh->ether_dhost,
ETHER_ADDR_LEN) != 0 &&
ETHER_IS_MULTICAST(eh->ether_dhost) == 0) {
m_freem(m);
continue;
}
}
/* Pass it on. */
(*ifp->if_input)(ifp, m);
}
/* Update the recieve pointer. */
sc->sc_rxptr = i;
}
/*
* tlp_txintr:
*
* Helper; handle transmit interrupts.
*/
void
tlp_txintr(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct tulip_txsoft *txs;
u_int32_t txstat;
DPRINTF(sc, ("%s: tlp_txintr: sc_flags 0x%08x\n",
sc->sc_dev.dv_xname, sc->sc_flags));
ifp->if_flags &= ~IFF_OACTIVE;
/*
* If we were doing a filter setup, check to see if it completed.
*/
if (sc->sc_flags & TULIPF_DOING_SETUP) {
TULIP_CDSDSYNC(sc, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
if ((sc->sc_setup_desc.td_status & TDSTAT_OWN) == 0)
sc->sc_flags &= ~TULIPF_DOING_SETUP;
}
/*
* Go through our Tx list and free mbufs for those
* frames that have been transmitted.
*/
while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
TULIP_CDTXSYNC(sc, txs->txs_firstdesc,
txs->txs_dmamap->dm_nsegs,
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
#ifdef TLP_DEBUG
if (ifp->if_flags & IFF_DEBUG) {
int i;
printf(" txsoft %p trainsmit chain:\n", txs);
for (i = txs->txs_firstdesc;; i = TULIP_NEXTTX(i)) {
printf(" descriptor %d:\n", i);
printf(" td_status: 0x%08x\n",
sc->sc_txdescs[i].td_status);
printf(" td_ctl: 0x%08x\n",
sc->sc_txdescs[i].td_ctl);
printf(" td_bufaddr1: 0x%08x\n",
sc->sc_txdescs[i].td_bufaddr1);
printf(" td_bufaddr2: 0x%08x\n",
sc->sc_txdescs[i].td_bufaddr2);
if (i == txs->txs_lastdesc)
break;
}
}
#endif
txstat = sc->sc_txdescs[txs->txs_firstdesc].td_status;
if (txstat & TDSTAT_OWN)
break;
SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs, txs_q);
sc->sc_txfree += txs->txs_dmamap->dm_nsegs;
bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap,
0, txs->txs_dmamap->dm_mapsize,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap);
m_freem(txs->txs_mbuf);
txs->txs_mbuf = NULL;
SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
/*
* Check for errors and collisions.
*/
if (txstat & TDSTAT_ES) {
ifp->if_oerrors++;
if (txstat & TDSTAT_Tx_EC)
ifp->if_collisions += 16;
if (txstat & TDSTAT_Tx_LC)
ifp->if_collisions++;
} else {
/* Packet was transmitted successfully. */
ifp->if_opackets++;
ifp->if_collisions += TDSTAT_Tx_COLLISIONS(txstat);
}
}
/*
* If there are no more pending transmissions, cancel the watchdog
* timer.
*/
if (txs == NULL && (sc->sc_flags & TULIPF_DOING_SETUP) == 0)
ifp->if_timer = 0;
/*
* If we have a receive filter setup pending, do it now.
*/
if (sc->sc_flags & TULIPF_WANT_SETUP)
(*sc->sc_filter_setup)(sc);
}
/*
* tlp_reset:
*
* Perform a soft reset on the Tulip.
*/
void
tlp_reset(sc)
struct tulip_softc *sc;
{
int i;
TULIP_WRITE(sc, CSR_BUSMODE, BUSMODE_SWR);
for (i = 0; i < 1000; i++) {
if (TULIP_ISSET(sc, CSR_BUSMODE, BUSMODE_SWR) == 0)
break;
delay(10);
}
if (TULIP_ISSET(sc, CSR_BUSMODE, BUSMODE_SWR))
printf("%s: reset failed to complete\n", sc->sc_dev.dv_xname);
delay(1000);
}
/*
* tlp_init:
*
* Initialize the interface. Must be called at splnet().
*/
int
tlp_init(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct tulip_txsoft *txs;
struct tulip_rxsoft *rxs;
int i, error = 0;
/*
* Cancel any pending I/O.
*/
tlp_stop(sc, 0);
/*
* Reset the Tulip to a known state.
*/
tlp_reset(sc);
/*
* Initialize the BUSMODE register.
*
* XXX What about read-multiple/read-line/write-line on
* XXX the 21140 and up?
*/
sc->sc_busmode = BUSMODE_BAR | BUSMODE_PBL_DEFAULT;
switch (sc->sc_cacheline) {
default:
/*
* Note: We must *always* set these bits; a cache
* alignment of 0 is RESERVED.
*/
case 8:
sc->sc_busmode |= BUSMODE_CAL_8LW;
break;
case 16:
sc->sc_busmode |= BUSMODE_CAL_16LW;
break;
case 32:
sc->sc_busmode |= BUSMODE_CAL_32LW;
break;
}
switch (sc->sc_chip) {
case TULIP_CHIP_82C168:
case TULIP_CHIP_82C169:
sc->sc_busmode |= BUSMODE_PNIC_MBO;
break;
default:
/* Nothing. */
break;
}
#if BYTE_ORDER == BIG_ENDIAN
/*
* XXX There are reports that this doesn't work properly
* in the old Tulip driver, but BUSMODE_DBO does. However,
* BUSMODE_DBO is not available on the 21040, and requires
* us to byte-swap the setup packet. What to do?
*/
sc->sc_busmode |= BUSMODE_BLE;
#endif
TULIP_WRITE(sc, CSR_BUSMODE, sc->sc_busmode);
/*
* Initialize the OPMODE register. We don't write it until
* we're ready to begin the transmit and receive processes.
*
* Media-related OPMODE bits are set in the media callbacks
* for each specific chip/board.
*/
sc->sc_opmode = OPMODE_SR | OPMODE_ST |
sc->sc_txth[sc->sc_txthresh].txth_opmode;
switch (sc->sc_chip) {
case TULIP_CHIP_21140:
case TULIP_CHIP_21140A:
case TULIP_CHIP_21142:
case TULIP_CHIP_21143:
sc->sc_opmode |= OPMODE_MBO;
break;
default:
/* Nothing. */
}
if (sc->sc_flags & TULIPF_HAS_MII) {
switch (sc->sc_chip) {
case TULIP_CHIP_82C168:
case TULIP_CHIP_82C169:
/* Enable the MII port. */
sc->sc_opmode |= OPMODE_PS;
TULIP_WRITE(sc, CSR_PNIC_ENDEC, PNIC_ENDEC_JDIS);
break;
case TULIP_CHIP_WB89C840F:
/* Nothing. */
break;
default:
/* Enable the MII port. */
sc->sc_opmode |= OPMODE_PS;
break;
}
}
/*
* Magical mystery initialization on the Macronix chips.
* The MX98713 uses its own magic value, the rest share
* a common one.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_MX98713:
TULIP_WRITE(sc, CSR_PMAC_TOR, PMAC_TOR_98713);
break;
case TULIP_CHIP_MX98713A:
case TULIP_CHIP_MX98715:
case TULIP_CHIP_MX98725:
TULIP_WRITE(sc, CSR_PMAC_TOR, PMAC_TOR_98715);
break;
default:
/* Nothing. */
}
/*
* Initialize the transmit descriptor ring.
*/
memset(sc->sc_txdescs, 0, sizeof(sc->sc_txdescs));
for (i = 0; i < TULIP_NTXDESC; i++) {
sc->sc_txdescs[i].td_ctl = TDCTL_CH;
sc->sc_txdescs[i].td_bufaddr2 =
TULIP_CDTXADDR(sc, TULIP_NEXTTX(i));
}
TULIP_CDTXSYNC(sc, 0, TULIP_NTXDESC,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
sc->sc_txfree = TULIP_NTXDESC;
sc->sc_txnext = 0;
/*
* Initialize the transmit job descriptors.
*/
SIMPLEQ_INIT(&sc->sc_txfreeq);
SIMPLEQ_INIT(&sc->sc_txdirtyq);
for (i = 0; i < TULIP_TXQUEUELEN; i++) {
txs = &sc->sc_txsoft[i];
txs->txs_mbuf = NULL;
SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
}
/*
* Initialize the receive descriptor and receive job
* descriptor rings.
*/
for (i = 0; i < TULIP_NRXDESC; i++) {
rxs = &sc->sc_rxsoft[i];
if (rxs->rxs_mbuf == NULL) {
if ((error = tlp_add_rxbuf(sc, i)) != 0) {
printf("%s: unable to allocate or map rx "
"buffer %d, error = %d\n",
sc->sc_dev.dv_xname, i, error);
/*
* XXX Should attempt to run with fewer receive
* XXX buffers instead of just failing.
*/
tlp_rxdrain(sc);
goto out;
}
}
}
sc->sc_rxptr = 0;
/*
* Initialize the interrupt mask and enable interrupts.
*/
/* normal interrupts */
sc->sc_inten = STATUS_TI | STATUS_TU | STATUS_RI | STATUS_NIS;
/* abnormal interrupts */
sc->sc_inten |= STATUS_TPS | STATUS_TJT | STATUS_UNF |
STATUS_RU | STATUS_RPS | STATUS_RWT | STATUS_SE | STATUS_AIS;
sc->sc_rxint_mask = STATUS_RI|STATUS_RU|STATUS_RWT;
sc->sc_txint_mask = STATUS_TI|STATUS_UNF|STATUS_TJT;
switch (sc->sc_chip) {
case TULIP_CHIP_WB89C840F:
/*
* Clear bits that we don't want that happen to
* overlap or don't exist.
*/
sc->sc_inten &= ~(STATUS_WINB_REI|STATUS_RWT);
break;
default:
/* Nothing. */
}
sc->sc_rxint_mask &= sc->sc_inten;
sc->sc_txint_mask &= sc->sc_inten;
TULIP_WRITE(sc, CSR_INTEN, sc->sc_inten);
TULIP_WRITE(sc, CSR_STATUS, 0xffffffff);
/*
* Give the transmit and receive rings to the Tulip.
*/
TULIP_WRITE(sc, CSR_TXLIST, TULIP_CDTXADDR(sc, sc->sc_txnext));
TULIP_WRITE(sc, CSR_RXLIST, TULIP_CDRXADDR(sc, sc->sc_rxptr));
/*
* On chips that do this differently, set the station address.
*/
switch (sc->sc_chip) {
case TULIP_CHIP_WB89C840F:
/* XXX Do this with stream writes? */
for (i = 0; i < ETHER_ADDR_LEN; i++) {
bus_space_write_1(sc->sc_st, sc->sc_sh,
(CSR_WINB_CPA0 >> sc->sc_regshift) + i,
LLADDR(ifp->if_sadl)[i]);
}
break;
default:
/* Nothing. */
}
/*
* Set the receive filter. This will start the transmit and
* receive processes.
*/
(*sc->sc_filter_setup)(sc);
/*
* Start the receive process.
*/
TULIP_WRITE(sc, CSR_RXPOLL, RXPOLL_RPD);
if (sc->sc_tick != NULL) {
/* Start the one second clock. */
timeout(sc->sc_tick, sc, hz);
}
/*
* Note that the interface is now running.
*/
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
/*
* Set the media. We must do this after the transmit process is
* running, since we may actually have to transmit packets on
* our board to test link integrity.
*/
(void) (*sc->sc_mediasw->tmsw_set)(sc);
out:
if (error)
printf("%s: interface not running\n", sc->sc_dev.dv_xname);
return (error);
}
/*
* tlp_rxdrain:
*
* Drain the receive queue.
*/
void
tlp_rxdrain(sc)
struct tulip_softc *sc;
{
struct tulip_rxsoft *rxs;
int i;
for (i = 0; i < TULIP_NRXDESC; i++) {
rxs = &sc->sc_rxsoft[i];
if (rxs->rxs_mbuf != NULL) {
bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap);
m_freem(rxs->rxs_mbuf);
rxs->rxs_mbuf = NULL;
}
}
}
/*
* tlp_stop:
*
* Stop transmission on the interface.
*/
void
tlp_stop(sc, drain)
struct tulip_softc *sc;
int drain;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct tulip_txsoft *txs;
if (sc->sc_tick != NULL) {
/* Stop the one second clock. */
untimeout(sc->sc_tick, sc);
}
/* Disable interrupts. */
TULIP_WRITE(sc, CSR_INTEN, 0);
/* Stop the transmit and receive processes. */
TULIP_WRITE(sc, CSR_OPMODE, 0);
TULIP_WRITE(sc, CSR_RXLIST, 0);
TULIP_WRITE(sc, CSR_TXLIST, 0);
/*
* Release any queued transmit buffers.
*/
while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs, txs_q);
if (txs->txs_mbuf != NULL) {
bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap);
m_freem(txs->txs_mbuf);
txs->txs_mbuf = NULL;
}
SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
}
if (drain) {
/*
* Release the receive buffers.
*/
tlp_rxdrain(sc);
}
sc->sc_flags &= ~(TULIPF_WANT_SETUP|TULIPF_DOING_SETUP);
/*
* Mark the interface down and cancel the watchdog timer.
*/
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
ifp->if_timer = 0;
}
#define SROM_EMIT(sc, x) \
do { \
TULIP_WRITE((sc), CSR_MIIROM, (x)); \
delay(1); \
} while (0)
/*
* tlp_srom_idle:
*
* Put the SROM in idle state.
*/
void
tlp_srom_idle(sc)
struct tulip_softc *sc;
{
u_int32_t miirom;
int i;
miirom = MIIROM_SR;
SROM_EMIT(sc, miirom);
miirom |= MIIROM_RD;
SROM_EMIT(sc, miirom);
miirom |= MIIROM_SROMCS;
SROM_EMIT(sc, miirom);
SROM_EMIT(sc, miirom|MIIROM_SROMSK);
/* Strobe the clock 25 times. */
for (i = 0; i < 25; i++) {
SROM_EMIT(sc, miirom);
SROM_EMIT(sc, miirom|MIIROM_SROMSK);
}
SROM_EMIT(sc, miirom);
miirom &= ~MIIROM_SROMCS;
SROM_EMIT(sc, miirom);
SROM_EMIT(sc, 0);
}
/*
* tlp_read_srom:
*
* Read the Tulip SROM.
*/
void
tlp_read_srom(sc, word, wordcnt, data)
struct tulip_softc *sc;
int word, wordcnt;
u_int16_t *data;
{
u_int32_t miirom;
int i, x;
tlp_srom_idle(sc);
/* Select the SROM. */
miirom = MIIROM_SR;
SROM_EMIT(sc, miirom);
miirom |= MIIROM_RD;
SROM_EMIT(sc, miirom);
for (i = 0; i < wordcnt; i++) {
/* Send CHIP SELECT for one clock tick. */
miirom |= MIIROM_SROMCS;
SROM_EMIT(sc, miirom);
/* Shift in the READ opcode. */
for (x = 3; x > 0; x--) {
if (TULIP_SROM_OPC_READ & (1 << (x - 1)))
miirom |= MIIROM_SROMDI;
else
miirom &= ~MIIROM_SROMDI;
SROM_EMIT(sc, miirom);
SROM_EMIT(sc, miirom|MIIROM_SROMSK);
SROM_EMIT(sc, miirom);
}
/* Shift in address. */
for (x = 6; x > 0; x--) {
if ((word + i) & (1 << (x - 1)))
miirom |= MIIROM_SROMDI;
else
miirom &= ~MIIROM_SROMDI;
SROM_EMIT(sc, miirom);
SROM_EMIT(sc, miirom|MIIROM_SROMSK);
SROM_EMIT(sc, miirom);
}
/* Shift out data. */
miirom &= ~MIIROM_SROMDI;
data[i] = 0;
for (x = 16; x > 0; x--) {
SROM_EMIT(sc, miirom|MIIROM_SROMSK);
if (TULIP_ISSET(sc, CSR_MIIROM, MIIROM_SROMDO))
data[i] |= (1 << (x - 1));
SROM_EMIT(sc, miirom);
}
/* Clear CHIP SELECT. */
miirom &= ~MIIROM_SROMCS;
SROM_EMIT(sc, miirom);
}
/* Deselect the SROM. */
SROM_EMIT(sc, 0);
/* ...and idle it. */
tlp_srom_idle(sc);
}
#undef SROM_EMIT
/*
* tlp_add_rxbuf:
*
* Add a receive buffer to the indicated descriptor.
*/
int
tlp_add_rxbuf(sc, idx)
struct tulip_softc *sc;
int idx;
{
struct tulip_rxsoft *rxs = &sc->sc_rxsoft[idx];
struct mbuf *m;
int error;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return (ENOBUFS);
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
return (ENOBUFS);
}
if (rxs->rxs_mbuf != NULL)
bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap);
rxs->rxs_mbuf = m;
error = bus_dmamap_load(sc->sc_dmat, rxs->rxs_dmamap,
m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT);
if (error) {
printf("%s: can't load rx DMA map %d, error = %d\n",
sc->sc_dev.dv_xname, idx, error);
panic("tlp_add_rxbuf"); /* XXX */
}
bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0,
rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD);
TULIP_INIT_RXDESC(sc, idx);
return (0);
}
/*
* tlp_crc32:
*
* Compute the 32-bit CRC of the provided buffer.
*/
u_int32_t
tlp_crc32(buf, len)
const u_int8_t *buf;
size_t len;
{
static const u_int32_t crctab[] = {
0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
};
u_int32_t crc;
int i;
crc = 0xffffffff;
for (i = 0; i < len; i++) {
crc ^= buf[i];
crc = (crc >> 4) ^ crctab[crc & 0xf];
crc = (crc >> 4) ^ crctab[crc & 0xf];
}
return (crc);
}
/*
* tlp_srom_crcok:
*
* Check the CRC of the Tulip SROM.
*/
int
tlp_srom_crcok(romdata)
u_int8_t *romdata;
{
u_int32_t crc;
crc = tlp_crc32(romdata, 126);
if ((crc ^ 0xffff) == (romdata[126] | (romdata[127] << 8)))
return (1);
return (0);
}
/*
* tlp_filter_setup:
*
* Set the Tulip's receive filter.
*/
void
tlp_filter_setup(sc)
struct tulip_softc *sc;
{
struct ethercom *ec = &sc->sc_ethercom;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct ether_multi *enm;
struct ether_multistep step;
__volatile u_int32_t *sp;
u_int8_t enaddr[ETHER_ADDR_LEN];
u_int32_t hash;
int cnt;
DPRINTF(sc, ("%s: tlp_filter_setup: sc_flags 0x%08x\n",
sc->sc_dev.dv_xname, sc->sc_flags));
memcpy(enaddr, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
/*
* If there are transmissions pending, wait until they have
* completed.
*/
if (SIMPLEQ_FIRST(&sc->sc_txdirtyq) != NULL ||
(sc->sc_flags & TULIPF_DOING_SETUP) != 0) {
sc->sc_flags |= TULIPF_WANT_SETUP;
DPRINTF(sc, ("%s: tlp_filter_setup: deferring\n",
sc->sc_dev.dv_xname));
return;
}
sc->sc_flags &= ~TULIPF_WANT_SETUP;
/*
* If we're running, idle the transmit and receive engines. If
* we're NOT running, we're being called from tlp_init(), and our
* writing OPMODE will start the transmit and receive processes
* in motion.
*/
if (ifp->if_flags & IFF_RUNNING)
tlp_idle(sc, OPMODE_ST|OPMODE_SR);
sc->sc_opmode &= ~(OPMODE_PR|OPMODE_PM);
if (ifp->if_flags & IFF_PROMISC) {
sc->sc_opmode |= OPMODE_PR;
goto allmulti;
}
/*
* Try Perfect filtering first.
*/
sc->sc_filtmode = TDCTL_Tx_FT_PERFECT;
sp = TULIP_CDSP(sc);
memset(TULIP_CDSP(sc), 0, TULIP_SETUP_PACKET_LEN);
cnt = 0;
ETHER_FIRST_MULTI(step, ec, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) {
/*
* 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;
}
if (cnt == (TULIP_MAXADDRS - 2)) {
/*
* We already have our multicast limit (still need
* our station address and broadcast). Go to
* Hash-Perfect mode.
*/
goto hashperfect;
}
*sp++ = ((u_int16_t *) enm->enm_addrlo)[0];
*sp++ = ((u_int16_t *) enm->enm_addrlo)[1];
*sp++ = ((u_int16_t *) enm->enm_addrlo)[2];
ETHER_NEXT_MULTI(step, enm);
}
if (ifp->if_flags & IFF_BROADCAST) {
/* ...and the broadcast address. */
cnt++;
*sp++ = 0xffff;
*sp++ = 0xffff;
*sp++ = 0xffff;
}
/* Pad the rest with our station address. */
for (; cnt < TULIP_MAXADDRS; cnt++) {
*sp++ = ((u_int16_t *) enaddr)[0];
*sp++ = ((u_int16_t *) enaddr)[1];
*sp++ = ((u_int16_t *) enaddr)[2];
}
ifp->if_flags &= ~IFF_ALLMULTI;
goto setit;
hashperfect:
/*
* Try Hash-Perfect mode.
*/
/*
* Some 21140 chips have broken Hash-Perfect modes. On these
* chips, we simply use Hash-Only mode, and put our station
* address into the filter.
*/
if (sc->sc_chip == TULIP_CHIP_21140)
sc->sc_filtmode = TDCTL_Tx_FT_HASHONLY;
else
sc->sc_filtmode = TDCTL_Tx_FT_HASH;
sp = TULIP_CDSP(sc);
memset(TULIP_CDSP(sc), 0, TULIP_SETUP_PACKET_LEN);
ETHER_FIRST_MULTI(step, ec, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) {
/*
* 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;
}
hash = tlp_mchash(enm->enm_addrlo);
sp[hash >> 4] |= 1 << (hash & 0xf);
ETHER_NEXT_MULTI(step, enm);
}
if (ifp->if_flags & IFF_BROADCAST) {
/* ...and the broadcast address. */
hash = tlp_mchash(etherbroadcastaddr);
sp[hash >> 4] |= 1 << (hash & 0xf);
}
if (sc->sc_filtmode == TDCTL_Tx_FT_HASHONLY) {
/* ...and our station address. */
hash = tlp_mchash(enaddr);
sp[hash >> 4] |= 1 << (hash & 0xf);
} else {
/*
* Hash-Perfect mode; put our station address after
* the hash table.
*/
sp[39] = ((u_int16_t *) enaddr)[0];
sp[40] = ((u_int16_t *) enaddr)[1];
sp[41] = ((u_int16_t *) enaddr)[2];
}
ifp->if_flags &= ~IFF_ALLMULTI;
goto setit;
allmulti:
/*
* Use Perfect filter mode. First address is the broadcast address,
* and pad the rest with our station address. We'll set Pass-all-
* multicast in OPMODE below.
*/
sc->sc_filtmode = TDCTL_Tx_FT_PERFECT;
sp = TULIP_CDSP(sc);
memset(TULIP_CDSP(sc), 0, TULIP_SETUP_PACKET_LEN);
cnt = 0;
if (ifp->if_flags & IFF_BROADCAST) {
cnt++;
*sp++ = 0xffff;
*sp++ = 0xffff;
*sp++ = 0xffff;
}
for (; cnt < TULIP_MAXADDRS; cnt++) {
*sp++ = ((u_int16_t *) enaddr)[0];
*sp++ = ((u_int16_t *) enaddr)[1];
*sp++ = ((u_int16_t *) enaddr)[2];
}
ifp->if_flags |= IFF_ALLMULTI;
setit:
if (ifp->if_flags & IFF_ALLMULTI)
sc->sc_opmode |= OPMODE_PM;
/* Sync the setup packet buffer. */
TULIP_CDSPSYNC(sc, BUS_DMASYNC_PREWRITE);
/*
* Fill in the setup packet descriptor.
*/
sc->sc_setup_desc.td_bufaddr1 = TULIP_CDSPADDR(sc);
sc->sc_setup_desc.td_bufaddr2 = TULIP_CDTXADDR(sc, sc->sc_txnext);
sc->sc_setup_desc.td_ctl =
(TULIP_SETUP_PACKET_LEN << TDCTL_SIZE1_SHIFT) |
sc->sc_filtmode | TDCTL_Tx_SET | TDCTL_Tx_FS | TDCTL_Tx_LS |
TDCTL_Tx_IC | TDCTL_CH;
sc->sc_setup_desc.td_status = TDSTAT_OWN;
TULIP_CDSDSYNC(sc, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
/*
* Write the address of the setup descriptor. This also has
* the side effect of giving the transmit ring to the chip,
* since the setup descriptor points to the next available
* descriptor in the ring.
*/
TULIP_WRITE(sc, CSR_TXLIST, TULIP_CDSDADDR(sc));
/*
* Set the OPMODE register. This will also resume the
* transmit transmit process we idled above.
*/
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
sc->sc_flags |= TULIPF_DOING_SETUP;
/*
* Kick the transmitter; this will cause the Tulip to
* read the setup descriptor.
*/
/* XXX USE AUTOPOLLING? */
TULIP_WRITE(sc, CSR_TXPOLL, TXPOLL_TPD);
/* Set up a watchdog timer in case the chip flakes out. */
ifp->if_timer = 5;
DPRINTF(sc, ("%s: tlp_filter_setup: returning\n", sc->sc_dev.dv_xname));
}
/*
* tlp_winb_filter_setup:
*
* Set the Winbond 89C840F's receive filter.
*/
void
tlp_winb_filter_setup(sc)
struct tulip_softc *sc;
{
struct ethercom *ec = &sc->sc_ethercom;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct ether_multi *enm;
struct ether_multistep step;
u_int32_t hash, mchash[2];
DPRINTF(sc, ("%s: tlp_winb_filter_setup: sc_flags 0x%08x\n",
sc->sc_dev.dv_xname, sc->sc_flags));
sc->sc_opmode &= ~(OPMODE_WINB_APP|OPMODE_WINB_AMP|OPMODE_WINB_ABP);
if (ifp->if_flags & IFF_MULTICAST)
sc->sc_opmode |= OPMODE_WINB_AMP;
if (ifp->if_flags & IFF_BROADCAST)
sc->sc_opmode |= OPMODE_WINB_ABP;
if (ifp->if_flags & IFF_PROMISC) {
sc->sc_opmode |= OPMODE_WINB_APP;
goto allmulti;
}
mchash[0] = mchash[1] = 0;
ETHER_FIRST_MULTI(step, ec, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) {
/*
* 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;
}
/*
* According to the FreeBSD `wb' driver, yes, you
* really do invert the hash.
*/
hash = (~(tlp_crc32(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26))
& 0x3f;
mchash[hash >> 5] |= 1 << (hash & 0x1f);
ETHER_NEXT_MULTI(step, enm);
}
ifp->if_flags &= ~IFF_ALLMULTI;
goto setit;
allmulti:
ifp->if_flags |= IFF_ALLMULTI;
mchash[0] = mchash[1] = 0xffffffff;
setit:
TULIP_WRITE(sc, CSR_WINB_CMA0, mchash[0]);
TULIP_WRITE(sc, CSR_WINB_CMA1, mchash[1]);
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
DPRINTF(sc, ("%s: tlp_winb_filter_setup: returning\n",
sc->sc_dev.dv_xname));
}
/*
* tlp_idle:
*
* Cause the transmit and/or receive processes to go idle.
*/
void
tlp_idle(sc, bits)
struct tulip_softc *sc;
u_int32_t bits;
{
static const char *tx_state_names[] = {
"STOPPED",
"RUNNING - FETCH",
"RUNNING - WAIT",
"RUNNING - READING",
"-- RESERVED --",
"RUNNING - SETUP",
"SUSPENDED",
"RUNNING - CLOSE",
};
static const char *rx_state_names[] = {
"STOPPED",
"RUNNING - FETCH",
"RUNNING - CHECK",
"RUNNING - WAIT",
"SUSPENDED",
"RUNNING - CLOSE",
"RUNNING - FLUSH",
"RUNNING - QUEUE",
};
u_int32_t csr, ackmask = 0;
int i;
if (bits & OPMODE_ST)
ackmask |= STATUS_TPS;
if (bits & OPMODE_SR)
ackmask |= STATUS_RPS;
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode & ~bits);
for (i = 0; i < 1000; i++) {
if (TULIP_ISSET(sc, CSR_STATUS, ackmask) == ackmask)
break;
delay(10);
}
csr = TULIP_READ(sc, CSR_STATUS);
if ((csr & ackmask) != ackmask) {
if ((bits & OPMODE_ST) != 0 && (csr & STATUS_TPS) == 0 &&
(csr & STATUS_TS) != STATUS_TS_STOPPED)
printf("%s: transmit process failed to idle: "
"state %s\n", sc->sc_dev.dv_xname,
tx_state_names[(csr & STATUS_TS) >> 20]);
if ((bits & OPMODE_SR) != 0 && (csr & STATUS_RPS) == 0 &&
(csr & STATUS_RS) != STATUS_RS_STOPPED)
printf("%s: receive process failed to idle: "
"state %s\n", sc->sc_dev.dv_xname,
rx_state_names[(csr & STATUS_RS) >> 17]);
}
TULIP_WRITE(sc, CSR_STATUS, ackmask);
}
/*****************************************************************************
* Generic media support functions.
*****************************************************************************/
/*
* tlp_mediastatus: [ifmedia interface function]
*
* Query the current media.
*/
void
tlp_mediastatus(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct tulip_softc *sc = ifp->if_softc;
(*sc->sc_mediasw->tmsw_get)(sc, ifmr);
}
/*
* tlp_mediachange: [ifmedia interface function]
*
* Update the current media.
*/
int
tlp_mediachange(ifp)
struct ifnet *ifp;
{
struct tulip_softc *sc = ifp->if_softc;
return ((*sc->sc_mediasw->tmsw_set)(sc));
}
/*****************************************************************************
* Support functions for MII-attached media.
*****************************************************************************/
/*
* tlp_mii_tick:
*
* One second timer, used to tick the MII.
*/
void
tlp_mii_tick(arg)
void *arg;
{
struct tulip_softc *sc = arg;
int s;
s = splnet();
mii_tick(&sc->sc_mii);
splx(s);
timeout(sc->sc_tick, sc, hz);
}
/*
* tlp_mii_statchg: [mii interface function]
*
* Callback from PHY when media changes.
*/
void
tlp_mii_statchg(self)
struct device *self;
{
struct tulip_softc *sc = (struct tulip_softc *)self;
/* Idle the transmit and receive processes. */
tlp_idle(sc, OPMODE_ST|OPMODE_SR);
/*
* XXX What about Heartbeat Disable? Is it magically frobbed
* XXX by the PHY? I hope so...
*/
if (IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_10_T)
sc->sc_opmode |= OPMODE_TTM;
else
sc->sc_opmode &= ~OPMODE_TTM;
if (sc->sc_mii.mii_media_active & IFM_FDX)
sc->sc_opmode |= OPMODE_FD;
else
sc->sc_opmode &= ~OPMODE_FD;
/*
* Write new OPMODE bits. This also restarts the transmit
* and receive processes.
*/
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
/* XXX Update ifp->if_baudrate */
}
/*
* tlp_winb_mii_statchg: [mii interface function]
*
* Callback from PHY when media changes. This version is
* for the Winbond 89C840F, which has different OPMODE bits.
*/
void
tlp_winb_mii_statchg(self)
struct device *self;
{
struct tulip_softc *sc = (struct tulip_softc *)self;
/* Idle the transmit and receive processes. */
tlp_idle(sc, OPMODE_ST|OPMODE_SR);
/*
* XXX What about Heartbeat Disable? Is it magically frobbed
* XXX by the PHY? I hope so...
*/
if (IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_100_TX)
sc->sc_opmode |= OPMODE_WINB_FES;
else
sc->sc_opmode &= ~OPMODE_WINB_FES;
if (sc->sc_mii.mii_media_active & IFM_FDX)
sc->sc_opmode |= OPMODE_FD;
else
sc->sc_opmode &= ~OPMODE_FD;
/*
* Write new OPMODE bits. This also restarts the transmit
* and receive processes.
*/
TULIP_WRITE(sc, CSR_OPMODE, sc->sc_opmode);
/* XXX Update ifp->if_baudrate */
}
/*
* tlp_mii_getmedia:
*
* Callback from ifmedia to request current media status.
*/
void
tlp_mii_getmedia(sc, ifmr)
struct tulip_softc *sc;
struct ifmediareq *ifmr;
{
mii_pollstat(&sc->sc_mii);
ifmr->ifm_status = sc->sc_mii.mii_media_status;
ifmr->ifm_active = sc->sc_mii.mii_media_active;
}
/*
* tlp_mii_setmedia:
*
* Callback from ifmedia to request new media setting.
*/
int
tlp_mii_setmedia(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
if (ifp->if_flags & IFF_UP)
mii_mediachg(&sc->sc_mii);
return (0);
}
#define MII_EMIT(sc, x) \
do { \
TULIP_WRITE((sc), CSR_MIIROM, (x)); \
delay(1); \
} while (0)
/*
* tlp_sio_mii_sync:
*
* Synchronize the SIO-attached MII.
*/
void
tlp_sio_mii_sync(sc)
struct tulip_softc *sc;
{
u_int32_t miirom;
int i;
miirom = MIIROM_MIIDIR|MIIROM_MDO;
MII_EMIT(sc, miirom);
for (i = 0; i < 32; i++) {
MII_EMIT(sc, miirom | MIIROM_MDC);
MII_EMIT(sc, miirom);
}
}
/*
* tlp_sio_mii_sendbits:
*
* Send a series of bits out the SIO to the MII.
*/
void
tlp_sio_mii_sendbits(sc, data, nbits)
struct tulip_softc *sc;
u_int32_t data;
int nbits;
{
u_int32_t miirom, i;
miirom = MIIROM_MIIDIR;
MII_EMIT(sc, miirom);
for (i = 1 << (nbits - 1); i != 0; i >>= 1) {
if (data & i)
miirom |= MIIROM_MDO;
else
miirom &= ~MIIROM_MDO;
MII_EMIT(sc, miirom);
MII_EMIT(sc, miirom|MIIROM_MDC);
MII_EMIT(sc, miirom);
}
}
/*
* tlp_sio_mii_readreg:
*
* Read a PHY register via SIO-attached MII.
*/
int
tlp_sio_mii_readreg(self, phy, reg)
struct device *self;
int phy, reg;
{
struct tulip_softc *sc = (void *) self;
int val = 0, err = 0, i;
tlp_sio_mii_sync(sc);
tlp_sio_mii_sendbits(sc, MII_COMMAND_START, 2);
tlp_sio_mii_sendbits(sc, MII_COMMAND_READ, 2);
tlp_sio_mii_sendbits(sc, phy, 5);
tlp_sio_mii_sendbits(sc, reg, 5);
MII_EMIT(sc, MIIROM_MIIDIR);
MII_EMIT(sc, MIIROM_MIIDIR|MIIROM_MDC);
MII_EMIT(sc, 0);
MII_EMIT(sc, MIIROM_MDC);
err = TULIP_ISSET(sc, CSR_MIIROM, MIIROM_MDI);
MII_EMIT(sc, 0);
MII_EMIT(sc, MIIROM_MDC);
for (i = 0; i < 16; i++) {
val <<= 1;
MII_EMIT(sc, 0);
if (err == 0 && TULIP_ISSET(sc, CSR_MIIROM, MIIROM_MDI))
val |= 1;
MII_EMIT(sc, MIIROM_MDC);
}
MII_EMIT(sc, 0);
return (err ? 0 : val);
}
/*
* tlp_sio_mii_writereg:
*
* Write a PHY register via SIO-attached MII.
*/
void
tlp_sio_mii_writereg(self, phy, reg, val)
struct device *self;
int phy, reg, val;
{
struct tulip_softc *sc = (void *) self;
tlp_sio_mii_sync(sc);
tlp_sio_mii_sendbits(sc, MII_COMMAND_START, 2);
tlp_sio_mii_sendbits(sc, MII_COMMAND_WRITE, 2);
tlp_sio_mii_sendbits(sc, phy, 5);
tlp_sio_mii_sendbits(sc, reg, 5);
tlp_sio_mii_sendbits(sc, MII_COMMAND_ACK, 2);
tlp_sio_mii_sendbits(sc, val, 16);
MII_EMIT(sc, 0);
}
#undef MII_EMIT
/*
* tlp_pnic_mii_readreg:
*
* Read a PHY register on the Lite-On PNIC.
*/
int
tlp_pnic_mii_readreg(self, phy, reg)
struct device *self;
int phy, reg;
{
struct tulip_softc *sc = (void *) self;
u_int32_t val;
int i;
TULIP_WRITE(sc, CSR_PNIC_MII,
PNIC_MII_MBO | PNIC_MII_RESERVED |
PNIC_MII_READ | (phy << PNIC_MII_PHYSHIFT) |
(reg << PNIC_MII_REGSHIFT));
for (i = 0; i < 1000; i++) {
delay(10);
val = TULIP_READ(sc, CSR_PNIC_MII);
if ((val & PNIC_MII_BUSY) == 0) {
if ((val & PNIC_MII_DATA) == PNIC_MII_DATA)
return (0);
else
return (val & PNIC_MII_DATA);
}
}
printf("%s: MII read timed out\n", sc->sc_dev.dv_xname);
return (0);
}
/*
* tlp_pnic_mii_writereg:
*
* Write a PHY register on the Lite-On PNIC.
*/
void
tlp_pnic_mii_writereg(self, phy, reg, val)
struct device *self;
int phy, reg, val;
{
struct tulip_softc *sc = (void *) self;
int i;
TULIP_WRITE(sc, CSR_PNIC_MII,
PNIC_MII_MBO | PNIC_MII_RESERVED |
PNIC_MII_WRITE | (phy << PNIC_MII_PHYSHIFT) |
(reg << PNIC_MII_REGSHIFT) | val);
for (i = 0; i < 1000; i++) {
delay(10);
if (TULIP_ISSET(sc, CSR_PNIC_MII, PNIC_MII_BUSY) == 0)
return;
}
printf("%s: MII write timed out\n", sc->sc_dev.dv_xname);
}
/*****************************************************************************
* Chip/board-specific media switches. The ones here are ones that
* are potentially common to multiple front-ends.
*****************************************************************************/
/*
* MII-on-SIO media switch. Handles only MII attached to the SIO.
*/
void tlp_sio_mii_tmsw_init __P((struct tulip_softc *));
const struct tulip_mediasw tlp_sio_mii_mediasw = {
tlp_sio_mii_tmsw_init, tlp_mii_getmedia, tlp_mii_setmedia
};
void
tlp_sio_mii_tmsw_init(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
sc->sc_mii.mii_ifp = ifp;
sc->sc_mii.mii_readreg = tlp_sio_mii_readreg;
sc->sc_mii.mii_writereg = tlp_sio_mii_writereg;
sc->sc_mii.mii_statchg = sc->sc_statchg;
ifmedia_init(&sc->sc_mii.mii_media, 0, tlp_mediachange,
tlp_mediastatus);
mii_phy_probe(&sc->sc_dev, &sc->sc_mii, 0xffffffff);
if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE);
} else {
sc->sc_flags |= TULIPF_HAS_MII;
sc->sc_tick = tlp_mii_tick;
ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);
}
}
/*
* Lite-On PNIC media switch. Must handle MII or internal NWAY.
*/
void tlp_pnic_tmsw_init __P((struct tulip_softc *));
void tlp_pnic_tmsw_get __P((struct tulip_softc *, struct ifmediareq *));
int tlp_pnic_tmsw_set __P((struct tulip_softc *));
const struct tulip_mediasw tlp_pnic_mediasw = {
tlp_pnic_tmsw_init, tlp_pnic_tmsw_get, tlp_pnic_tmsw_set
};
void tlp_pnic_nway_tick __P((void *));
int tlp_pnic_nway_service __P((struct tulip_softc *, int));
void tlp_pnic_nway_reset __P((struct tulip_softc *));
int tlp_pnic_nway_auto __P((struct tulip_softc *, int));
void tlp_pnic_nway_auto_timeout __P((void *));
void tlp_pnic_nway_status __P((struct tulip_softc *));
void tlp_pnic_nway_acomp __P((struct tulip_softc *));
void
tlp_pnic_tmsw_init(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
const char *sep = "";
#define ADD(m, c) ifmedia_add(&sc->sc_mii.mii_media, (m), (c), NULL)
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
sc->sc_mii.mii_ifp = ifp;
sc->sc_mii.mii_readreg = tlp_pnic_mii_readreg;
sc->sc_mii.mii_writereg = tlp_pnic_mii_writereg;
sc->sc_mii.mii_statchg = sc->sc_statchg;
ifmedia_init(&sc->sc_mii.mii_media, 0, tlp_mediachange,
tlp_mediastatus);
mii_phy_probe(&sc->sc_dev, &sc->sc_mii, 0xffffffff);
if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
/* XXX What about AUI/BNC support? */
printf("%s: ", sc->sc_dev.dv_xname);
tlp_pnic_nway_reset(sc);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
PNIC_NWAY_TW|PNIC_NWAY_CAP10T);
PRINT("10baseT");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0),
PNIC_NWAY_TW|PNIC_NWAY_FD|PNIC_NWAY_CAP10TFDX);
PRINT("10baseT-FDX");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, 0),
PNIC_NWAY_TW|PNIC_NWAY_100|PNIC_NWAY_CAP100TX);
PRINT("100baseTX");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, 0),
PNIC_NWAY_TW|PNIC_NWAY_100|PNIC_NWAY_FD|
PNIC_NWAY_CAP100TXFDX);
PRINT("100baseTX-FDX");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
PNIC_NWAY_TW|PNIC_NWAY_RN|PNIC_NWAY_NW|
PNIC_NWAY_CAP10T|PNIC_NWAY_CAP10TFDX|
PNIC_NWAY_CAP100TXFDX|PNIC_NWAY_CAP100TX);
PRINT("auto");
sc->sc_tick = tlp_pnic_nway_tick;
ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);
} else {
sc->sc_flags |= TULIPF_HAS_MII;
sc->sc_tick = tlp_mii_tick;
ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);
}
#undef ADD
#undef PRINT
}
void
tlp_pnic_tmsw_get(sc, ifmr)
struct tulip_softc *sc;
struct ifmediareq *ifmr;
{
struct mii_data *mii = &sc->sc_mii;
if (sc->sc_flags & TULIPF_HAS_MII)
tlp_mii_getmedia(sc, ifmr);
else {
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
tlp_pnic_nway_service(sc, MII_POLLSTAT);
ifmr->ifm_status = sc->sc_mii.mii_media_status;
ifmr->ifm_active = sc->sc_mii.mii_media_active;
}
}
int
tlp_pnic_tmsw_set(sc)
struct tulip_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct mii_data *mii = &sc->sc_mii;
if (sc->sc_flags & TULIPF_HAS_MII)
return (tlp_mii_setmedia(sc));
if (ifp->if_flags & IFF_UP) {
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
return (tlp_pnic_nway_service(sc, MII_MEDIACHG));
}
return (0);
}
void
tlp_pnic_nway_tick(arg)
void *arg;
{
struct tulip_softc *sc = arg;
int s;
s = splnet();
tlp_pnic_nway_service(sc, MII_TICK);
splx(s);
timeout(tlp_pnic_nway_tick, sc, hz);
}
/*
* Support for the Lite-On PNIC internal NWay block. This is constructed
* somewhat like a PHY driver for simplicity.
*/
int
tlp_pnic_nway_service(sc, cmd)
struct tulip_softc *sc;
int cmd;
{
struct mii_data *mii = &sc->sc_mii;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
switch (cmd) {
case MII_POLLSTAT:
/* Nothing special to do here. */
break;
case MII_MEDIACHG:
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
(void) tlp_pnic_nway_auto(sc, 1);
break;
case IFM_100_T4:
/*
* XXX Not supported as a manual setting right now.
*/
return (EINVAL);
default:
/*
* NWAY register data is stored in the ifmedia entry.
*/
TULIP_WRITE(sc, CSR_PNIC_NWAY, ife->ifm_data);
}
break;
case MII_TICK:
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process.
*/
if (sc->sc_flags & TULIPF_LINK_UP)
return (0);
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->sc_nway_ticks != 5)
return (0);
sc->sc_nway_ticks = 0;
tlp_pnic_nway_reset(sc);
if (tlp_pnic_nway_auto(sc, 0) == EJUSTRETURN)
return (0);
break;
}
/* Update the media status. */
tlp_pnic_nway_status(sc);
/* Callback if something changed. */
if (sc->sc_nway_active != mii->mii_media_active ||
cmd == MII_MEDIACHG) {
(*sc->sc_statchg)(&sc->sc_dev);
sc->sc_nway_active = mii->mii_media_active;
}
return (0);
}
void
tlp_pnic_nway_reset(sc)
struct tulip_softc *sc;
{
TULIP_WRITE(sc, CSR_PNIC_NWAY, PNIC_NWAY_RS);
delay(100);
TULIP_WRITE(sc, CSR_PNIC_NWAY, 0);
}
int
tlp_pnic_nway_auto(sc, waitfor)
struct tulip_softc *sc;
int waitfor;
{
struct mii_data *mii = &sc->sc_mii;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
u_int32_t reg;
int i;
if ((sc->sc_flags & TULIPF_DOINGAUTO) == 0)
TULIP_WRITE(sc, CSR_PNIC_NWAY, ife->ifm_data);
if (waitfor) {
/* Wait 500ms for it to complete. */
for (i = 0; i < 500; i++) {
reg = TULIP_READ(sc, CSR_PNIC_NWAY);
if (reg & PNIC_NWAY_LPAR_MASK) {
tlp_pnic_nway_acomp(sc);
return (0);
}
delay(1000);
}
#if 0
if ((reg & PNIC_NWAY_LPAR_MASK) == 0)
printf("%s: autonegotiation failed to complete\n",
sc->sc_dev.dv_xname);
#endif
/*
* Don't need to worry about clearing DOINGAUTO.
* If that's set, a timeout is pending, and it will
* clear the flag.
*/
return (EIO);
}
/*
* Just let it finish asynchronously. This is for the benefit of
* the tick handler driving autonegotiation. Don't want 500ms
* delays all the time while the system is running!
*/
if ((sc->sc_flags & TULIPF_DOINGAUTO) == 0) {
sc->sc_flags |= TULIPF_DOINGAUTO;
timeout(tlp_pnic_nway_auto_timeout, sc, hz >> 1);
}
return (EJUSTRETURN);
}
void
tlp_pnic_nway_auto_timeout(arg)
void *arg;
{
struct tulip_softc *sc = arg;
u_int32_t reg;
int s;
s = splnet();
sc->sc_flags &= ~TULIPF_DOINGAUTO;
reg = TULIP_READ(sc, CSR_PNIC_NWAY);
#if 0
if ((reg & PNIC_NWAY_LPAR_MASK) == 0)
printf("%s: autonegotiation failed to complete\n",
sc->sc_dev.dv_xname);
#endif
tlp_pnic_nway_acomp(sc);
/* Update the media status. */
(void) tlp_pnic_nway_service(sc, MII_POLLSTAT);
splx(s);
}
void
tlp_pnic_nway_status(sc)
struct tulip_softc *sc;
{
struct mii_data *mii = &sc->sc_mii;
u_int32_t reg;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
reg = TULIP_READ(sc, CSR_PNIC_NWAY);
if (sc->sc_flags & TULIPF_LINK_UP)
mii->mii_media_status |= IFM_ACTIVE;
if (reg & PNIC_NWAY_NW) {
if ((reg & PNIC_NWAY_LPAR_MASK) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
#if 0
if (reg & PNIC_NWAY_LPAR100T4)
mii->mii_media_active |= IFM_100_T4;
else
#endif
if (reg & PNIC_NWAY_LPAR100TXFDX)
mii->mii_media_active |= IFM_100_TX|IFM_FDX;
else if (reg & PNIC_NWAY_LPAR100TX)
mii->mii_media_active |= IFM_100_TX;
else if (reg & PNIC_NWAY_LPAR10TFDX)
mii->mii_media_active |= IFM_10_T|IFM_FDX;
else if (reg & PNIC_NWAY_LPAR10T)
mii->mii_media_active |= IFM_10_T;
else
mii->mii_media_active |= IFM_NONE;
} else {
if (reg & PNIC_NWAY_100)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (reg & PNIC_NWAY_FD)
mii->mii_media_active |= IFM_FDX;
}
}
void
tlp_pnic_nway_acomp(sc)
struct tulip_softc *sc;
{
u_int32_t reg;
reg = TULIP_READ(sc, CSR_PNIC_NWAY);
reg &= ~(PNIC_NWAY_FD|PNIC_NWAY_100|PNIC_NWAY_RN);
if (reg & (PNIC_NWAY_LPAR100TXFDX|PNIC_NWAY_LPAR100TX))
reg |= PNIC_NWAY_100;
if (reg & (PNIC_NWAY_LPAR10TFDX|PNIC_NWAY_LPAR100TXFDX))
reg |= PNIC_NWAY_FD;
TULIP_WRITE(sc, CSR_PNIC_NWAY, reg);
}
Reference in New Issue View Git Blame Copy Permalink