NetBSD-5.0.2/sys/dev/sbus/qe.c
/* $NetBSD: qe.c,v 1.45 2008/04/28 20:23:57 martin Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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.
*
* 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.
*/
/*
* Copyright (c) 1998 Jason L. Wright.
* 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. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*/
/*
* Driver for the SBus qec+qe QuadEthernet board.
*
* This driver was written using the AMD MACE Am79C940 documentation, some
* ideas gleaned from the S/Linux driver for this card, Solaris header files,
* and a loan of a card from Paul Southworth of the Internet Engineering
* Group (www.ieng.com).
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: qe.c,v 1.45 2008/04/28 20:23:57 martin Exp $");
#define QEDEBUG
#include "opt_ddb.h"
#include "opt_inet.h"
#include "bpfilter.h"
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/malloc.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/netisr.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <sys/bus.h>
#include <sys/intr.h>
#include <machine/autoconf.h>
#include <dev/sbus/sbusvar.h>
#include <dev/sbus/qecreg.h>
#include <dev/sbus/qecvar.h>
#include <dev/sbus/qereg.h>
struct qe_softc {
struct device sc_dev; /* base device */
struct sbusdev sc_sd; /* sbus device */
bus_space_tag_t sc_bustag; /* bus & DMA tags */
bus_dma_tag_t sc_dmatag;
bus_dmamap_t sc_dmamap;
struct ethercom sc_ethercom;
struct ifmedia sc_ifmedia; /* interface media */
struct qec_softc *sc_qec; /* QEC parent */
bus_space_handle_t sc_qr; /* QEC registers */
bus_space_handle_t sc_mr; /* MACE registers */
bus_space_handle_t sc_cr; /* channel registers */
int sc_channel; /* channel number */
u_int sc_rev; /* board revision */
int sc_burst;
struct qec_ring sc_rb; /* Packet Ring Buffer */
/* MAC address */
u_int8_t sc_enaddr[6];
#ifdef QEDEBUG
int sc_debug;
#endif
};
int qematch(struct device *, struct cfdata *, void *);
void qeattach(struct device *, struct device *, void *);
void qeinit(struct qe_softc *);
void qestart(struct ifnet *);
void qestop(struct qe_softc *);
void qewatchdog(struct ifnet *);
int qeioctl(struct ifnet *, u_long, void *);
void qereset(struct qe_softc *);
int qeintr(void *);
int qe_eint(struct qe_softc *, u_int32_t);
int qe_rint(struct qe_softc *);
int qe_tint(struct qe_softc *);
void qe_mcreset(struct qe_softc *);
static int qe_put(struct qe_softc *, int, struct mbuf *);
static void qe_read(struct qe_softc *, int, int);
static struct mbuf *qe_get(struct qe_softc *, int, int);
/* ifmedia callbacks */
void qe_ifmedia_sts(struct ifnet *, struct ifmediareq *);
int qe_ifmedia_upd(struct ifnet *);
CFATTACH_DECL(qe, sizeof(struct qe_softc),
qematch, qeattach, NULL, NULL);
int
qematch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_name, sa->sa_name) == 0);
}
void
qeattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbus_attach_args *sa = aux;
struct qec_softc *qec = (struct qec_softc *)parent;
struct qe_softc *sc = (struct qe_softc *)self;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
int node = sa->sa_node;
bus_dma_tag_t dmatag = sa->sa_dmatag;
bus_dma_segment_t seg;
bus_size_t size;
int rseg, error;
if (sa->sa_nreg < 2) {
printf("%s: only %d register sets\n",
device_xname(self), sa->sa_nreg);
return;
}
if (bus_space_map(sa->sa_bustag,
(bus_addr_t)BUS_ADDR(
sa->sa_reg[0].oa_space,
sa->sa_reg[0].oa_base),
(bus_size_t)sa->sa_reg[0].oa_size,
0, &sc->sc_cr) != 0) {
aprint_error_dev(self, "cannot map registers\n");
return;
}
if (bus_space_map(sa->sa_bustag,
(bus_addr_t)BUS_ADDR(
sa->sa_reg[1].oa_space,
sa->sa_reg[1].oa_base),
(bus_size_t)sa->sa_reg[1].oa_size,
0, &sc->sc_mr) != 0) {
aprint_error_dev(self, "cannot map registers\n");
return;
}
sc->sc_rev = prom_getpropint(node, "mace-version", -1);
printf(" rev %x", sc->sc_rev);
sc->sc_bustag = sa->sa_bustag;
sc->sc_dmatag = sa->sa_dmatag;
sc->sc_qec = qec;
sc->sc_qr = qec->sc_regs;
sc->sc_channel = prom_getpropint(node, "channel#", -1);
sc->sc_burst = qec->sc_burst;
qestop(sc);
/* Note: no interrupt level passed */
(void)bus_intr_establish(sa->sa_bustag, 0, IPL_NET, qeintr, sc);
prom_getether(node, sc->sc_enaddr);
/*
* Allocate descriptor ring and buffers.
*/
/* for now, allocate as many bufs as there are ring descriptors */
sc->sc_rb.rb_ntbuf = QEC_XD_RING_MAXSIZE;
sc->sc_rb.rb_nrbuf = QEC_XD_RING_MAXSIZE;
size = QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd) +
QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd) +
sc->sc_rb.rb_ntbuf * QE_PKT_BUF_SZ +
sc->sc_rb.rb_nrbuf * QE_PKT_BUF_SZ;
/* Get a DMA handle */
if ((error = bus_dmamap_create(dmatag, size, 1, size, 0,
BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) {
aprint_error_dev(self, "DMA map create error %d\n",
error);
return;
}
/* Allocate DMA buffer */
if ((error = bus_dmamem_alloc(dmatag, size, 0, 0,
&seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) {
aprint_error_dev(self, "DMA buffer alloc error %d\n",
error);
return;
}
/* Map DMA buffer in CPU addressable space */
if ((error = bus_dmamem_map(dmatag, &seg, rseg, size,
&sc->sc_rb.rb_membase,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
aprint_error_dev(self, "DMA buffer map error %d\n",
error);
bus_dmamem_free(dmatag, &seg, rseg);
return;
}
/* Load the buffer */
if ((error = bus_dmamap_load(dmatag, sc->sc_dmamap,
sc->sc_rb.rb_membase, size, NULL,
BUS_DMA_NOWAIT)) != 0) {
aprint_error_dev(self, "DMA buffer map load error %d\n",
error);
bus_dmamem_unmap(dmatag, sc->sc_rb.rb_membase, size);
bus_dmamem_free(dmatag, &seg, rseg);
return;
}
sc->sc_rb.rb_dmabase = sc->sc_dmamap->dm_segs[0].ds_addr;
/* Initialize media properties */
ifmedia_init(&sc->sc_ifmedia, 0, qe_ifmedia_upd, qe_ifmedia_sts);
ifmedia_add(&sc->sc_ifmedia,
IFM_MAKEWORD(IFM_ETHER,IFM_10_T,0,0),
0, NULL);
ifmedia_add(&sc->sc_ifmedia,
IFM_MAKEWORD(IFM_ETHER,IFM_10_5,0,0),
0, NULL);
ifmedia_add(&sc->sc_ifmedia,
IFM_MAKEWORD(IFM_ETHER,IFM_AUTO,0,0),
0, NULL);
ifmedia_set(&sc->sc_ifmedia, IFM_ETHER|IFM_AUTO);
memcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ);
ifp->if_softc = sc;
ifp->if_start = qestart;
ifp->if_ioctl = qeioctl;
ifp->if_watchdog = qewatchdog;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS |
IFF_MULTICAST;
IFQ_SET_READY(&ifp->if_snd);
/* Attach the interface. */
if_attach(ifp);
ether_ifattach(ifp, sc->sc_enaddr);
printf(" address %s\n", ether_sprintf(sc->sc_enaddr));
}
/*
* Pull data off an interface.
* Len is the length of data, with local net header stripped.
* We copy the data into mbufs. When full cluster sized units are present,
* we copy into clusters.
*/
static inline struct mbuf *
qe_get(sc, idx, totlen)
struct qe_softc *sc;
int idx, totlen;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct mbuf *m;
struct mbuf *top, **mp;
int len, pad, boff = 0;
void *bp;
bp = (char *)sc->sc_rb.rb_rxbuf + (idx % sc->sc_rb.rb_nrbuf) * QE_PKT_BUF_SZ;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return (NULL);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = totlen;
pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header);
m->m_data += pad;
len = MHLEN - pad;
top = NULL;
mp = ⊤
while (totlen > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(top);
return (NULL);
}
len = MLEN;
}
if (top && totlen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
len = MCLBYTES;
}
m->m_len = len = min(totlen, len);
memcpy(mtod(m, void *), (char *)bp + boff, len);
boff += len;
totlen -= len;
*mp = m;
mp = &m->m_next;
}
return (top);
}
/*
* Routine to copy from mbuf chain to transmit buffer in
* network buffer memory.
*/
inline int
qe_put(sc, idx, m)
struct qe_softc *sc;
int idx;
struct mbuf *m;
{
struct mbuf *n;
int len, tlen = 0, boff = 0;
void *bp;
bp = (char *)sc->sc_rb.rb_txbuf + (idx % sc->sc_rb.rb_ntbuf) * QE_PKT_BUF_SZ;
for (; m; m = n) {
len = m->m_len;
if (len == 0) {
MFREE(m, n);
continue;
}
memcpy((char *)bp + boff, mtod(m, void *), len);
boff += len;
tlen += len;
MFREE(m, n);
}
return (tlen);
}
/*
* Pass a packet to the higher levels.
*/
inline void
qe_read(sc, idx, len)
struct qe_softc *sc;
int idx, len;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct mbuf *m;
if (len <= sizeof(struct ether_header) ||
len > ETHERMTU + sizeof(struct ether_header)) {
printf("%s: invalid packet size %d; dropping\n",
ifp->if_xname, len);
ifp->if_ierrors++;
return;
}
/*
* Pull packet off interface.
*/
m = qe_get(sc, idx, len);
if (m == NULL) {
ifp->if_ierrors++;
return;
}
ifp->if_ipackets++;
#if NBPFILTER > 0
/*
* Check if there's a BPF listener on this interface.
* If so, hand off the raw packet to BPF.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
/* Pass the packet up. */
(*ifp->if_input)(ifp, m);
}
/*
* Start output on interface.
* We make two assumptions here:
* 1) that the current priority is set to splnet _before_ this code
* is called *and* is returned to the appropriate priority after
* return
* 2) that the IFF_OACTIVE flag is checked before this code is called
* (i.e. that the output part of the interface is idle)
*/
void
qestart(ifp)
struct ifnet *ifp;
{
struct qe_softc *sc = (struct qe_softc *)ifp->if_softc;
struct qec_xd *txd = sc->sc_rb.rb_txd;
struct mbuf *m;
unsigned int bix, len;
unsigned int ntbuf = sc->sc_rb.rb_ntbuf;
if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
return;
bix = sc->sc_rb.rb_tdhead;
for (;;) {
IFQ_DEQUEUE(&ifp->if_snd, m);
if (m == 0)
break;
#if NBPFILTER > 0
/*
* If BPF is listening on this interface, let it see the
* packet before we commit it to the wire.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
/*
* Copy the mbuf chain into the transmit buffer.
*/
len = qe_put(sc, bix, m);
/*
* Initialize transmit registers and start transmission
*/
txd[bix].xd_flags = QEC_XD_OWN | QEC_XD_SOP | QEC_XD_EOP |
(len & QEC_XD_LENGTH);
bus_space_write_4(sc->sc_bustag, sc->sc_cr, QE_CRI_CTRL,
QE_CR_CTRL_TWAKEUP);
if (++bix == QEC_XD_RING_MAXSIZE)
bix = 0;
if (++sc->sc_rb.rb_td_nbusy == ntbuf) {
ifp->if_flags |= IFF_OACTIVE;
break;
}
}
sc->sc_rb.rb_tdhead = bix;
}
void
qestop(sc)
struct qe_softc *sc;
{
bus_space_tag_t t = sc->sc_bustag;
bus_space_handle_t mr = sc->sc_mr;
bus_space_handle_t cr = sc->sc_cr;
int n;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
/* Stop the schwurst */
bus_space_write_1(t, mr, QE_MRI_BIUCC, QE_MR_BIUCC_SWRST);
for (n = 200; n > 0; n--) {
if ((bus_space_read_1(t, mr, QE_MRI_BIUCC) &
QE_MR_BIUCC_SWRST) == 0)
break;
DELAY(20);
}
/* then reset */
bus_space_write_4(t, cr, QE_CRI_CTRL, QE_CR_CTRL_RESET);
for (n = 200; n > 0; n--) {
if ((bus_space_read_4(t, cr, QE_CRI_CTRL) &
QE_CR_CTRL_RESET) == 0)
break;
DELAY(20);
}
}
/*
* Reset interface.
*/
void
qereset(sc)
struct qe_softc *sc;
{
int s;
s = splnet();
qestop(sc);
qeinit(sc);
splx(s);
}
void
qewatchdog(ifp)
struct ifnet *ifp;
{
struct qe_softc *sc = ifp->if_softc;
log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
qereset(sc);
}
/*
* Interrupt dispatch.
*/
int
qeintr(arg)
void *arg;
{
struct qe_softc *sc = (struct qe_softc *)arg;
bus_space_tag_t t = sc->sc_bustag;
u_int32_t qecstat, qestat;
int r = 0;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
/* Read QEC status and channel status */
qecstat = bus_space_read_4(t, sc->sc_qr, QEC_QRI_STAT);
#ifdef QEDEBUG
if (sc->sc_debug) {
printf("qe%d: intr: qecstat=%x\n", sc->sc_channel, qecstat);
}
#endif
/* Filter out status for this channel */
qecstat = qecstat >> (4 * sc->sc_channel);
if ((qecstat & 0xf) == 0)
return (r);
qestat = bus_space_read_4(t, sc->sc_cr, QE_CRI_STAT);
#ifdef QEDEBUG
if (sc->sc_debug) {
char bits[64]; int i;
bus_space_tag_t t1 = sc->sc_bustag;
bus_space_handle_t mr = sc->sc_mr;
printf("qe%d: intr: qestat=%s\n", sc->sc_channel,
bitmask_snprintf(qestat, QE_CR_STAT_BITS, bits, sizeof(bits)));
printf("MACE registers:\n");
for (i = 0 ; i < 32; i++) {
printf(" m[%d]=%x,", i, bus_space_read_1(t1, mr, i));
if (((i+1) & 7) == 0)
printf("\n");
}
}
#endif
if (qestat & QE_CR_STAT_ALLERRORS) {
#ifdef QEDEBUG
if (sc->sc_debug) {
char bits[64];
printf("qe%d: eint: qestat=%s\n", sc->sc_channel,
bitmask_snprintf(qestat, QE_CR_STAT_BITS, bits,
sizeof(bits)));
}
#endif
r |= qe_eint(sc, qestat);
if (r == -1)
return (1);
}
if (qestat & QE_CR_STAT_TXIRQ)
r |= qe_tint(sc);
if (qestat & QE_CR_STAT_RXIRQ)
r |= qe_rint(sc);
return (r);
}
/*
* Transmit interrupt.
*/
int
qe_tint(sc)
struct qe_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
unsigned int bix, txflags;
bix = sc->sc_rb.rb_tdtail;
for (;;) {
if (sc->sc_rb.rb_td_nbusy <= 0)
break;
txflags = sc->sc_rb.rb_txd[bix].xd_flags;
if (txflags & QEC_XD_OWN)
break;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_opackets++;
if (++bix == QEC_XD_RING_MAXSIZE)
bix = 0;
--sc->sc_rb.rb_td_nbusy;
}
sc->sc_rb.rb_tdtail = bix;
qestart(ifp);
if (sc->sc_rb.rb_td_nbusy == 0)
ifp->if_timer = 0;
return (1);
}
/*
* Receive interrupt.
*/
int
qe_rint(sc)
struct qe_softc *sc;
{
struct qec_xd *xd = sc->sc_rb.rb_rxd;
unsigned int bix, len;
unsigned int nrbuf = sc->sc_rb.rb_nrbuf;
#ifdef QEDEBUG
int npackets = 0;
#endif
bix = sc->sc_rb.rb_rdtail;
/*
* Process all buffers with valid data.
*/
for (;;) {
len = xd[bix].xd_flags;
if (len & QEC_XD_OWN)
break;
#ifdef QEDEBUG
npackets++;
#endif
len &= QEC_XD_LENGTH;
len -= 4;
qe_read(sc, bix, len);
/* ... */
xd[(bix+nrbuf) % QEC_XD_RING_MAXSIZE].xd_flags =
QEC_XD_OWN | (QE_PKT_BUF_SZ & QEC_XD_LENGTH);
if (++bix == QEC_XD_RING_MAXSIZE)
bix = 0;
}
#ifdef QEDEBUG
if (npackets == 0 && sc->sc_debug)
printf("%s: rint: no packets; rb index %d; status 0x%x\n",
device_xname(&sc->sc_dev), bix, len);
#endif
sc->sc_rb.rb_rdtail = bix;
return (1);
}
/*
* Error interrupt.
*/
int
qe_eint(sc, why)
struct qe_softc *sc;
u_int32_t why;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
int r = 0, rst = 0;
if (why & QE_CR_STAT_EDEFER) {
printf("%s: excessive tx defers.\n", device_xname(&sc->sc_dev));
r |= 1;
ifp->if_oerrors++;
}
if (why & QE_CR_STAT_CLOSS) {
printf("%s: no carrier, link down?\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
r |= 1;
}
if (why & QE_CR_STAT_ERETRIES) {
printf("%s: excessive tx retries\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_LCOLL) {
printf("%s: late tx transmission\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_FUFLOW) {
printf("%s: tx fifo underflow\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_JERROR) {
printf("%s: jabber seen\n", device_xname(&sc->sc_dev));
r |= 1;
}
if (why & QE_CR_STAT_BERROR) {
printf("%s: babble seen\n", device_xname(&sc->sc_dev));
r |= 1;
}
if (why & QE_CR_STAT_TCCOFLOW) {
ifp->if_collisions += 256;
ifp->if_oerrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_TXDERROR) {
printf("%s: tx descriptor is bad\n", device_xname(&sc->sc_dev));
rst = 1;
r |= 1;
}
if (why & QE_CR_STAT_TXLERR) {
printf("%s: tx late error\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
rst = 1;
r |= 1;
}
if (why & QE_CR_STAT_TXPERR) {
printf("%s: tx DMA parity error\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
rst = 1;
r |= 1;
}
if (why & QE_CR_STAT_TXSERR) {
printf("%s: tx DMA sbus error ack\n", device_xname(&sc->sc_dev));
ifp->if_oerrors++;
rst = 1;
r |= 1;
}
if (why & QE_CR_STAT_RCCOFLOW) {
ifp->if_collisions += 256;
ifp->if_ierrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_RUOFLOW) {
ifp->if_ierrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_MCOFLOW) {
ifp->if_ierrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_RXFOFLOW) {
printf("%s: rx fifo overflow\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
}
if (why & QE_CR_STAT_RLCOLL) {
printf("%s: rx late collision\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
ifp->if_collisions++;
r |= 1;
}
if (why & QE_CR_STAT_FCOFLOW) {
ifp->if_ierrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_CECOFLOW) {
ifp->if_ierrors += 256;
r |= 1;
}
if (why & QE_CR_STAT_RXDROP) {
printf("%s: rx packet dropped\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
}
if (why & QE_CR_STAT_RXSMALL) {
printf("%s: rx buffer too small\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_RXLERR) {
printf("%s: rx late error\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_RXPERR) {
printf("%s: rx DMA parity error\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
rst = 1;
}
if (why & QE_CR_STAT_RXSERR) {
printf("%s: rx DMA sbus error ack\n", device_xname(&sc->sc_dev));
ifp->if_ierrors++;
r |= 1;
rst = 1;
}
if (r == 0)
aprint_error_dev(&sc->sc_dev, "unexpected interrupt error: %08x\n",
why);
if (rst) {
printf("%s: resetting...\n", device_xname(&sc->sc_dev));
qereset(sc);
return (-1);
}
return (r);
}
int
qeioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
void *data;
{
struct qe_softc *sc = ifp->if_softc;
struct ifaddr *ifa = (struct ifaddr *)data;
struct ifreq *ifr = (struct ifreq *)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:
qeinit(sc);
arp_ifinit(ifp, ifa);
break;
#endif /* INET */
default:
qeinit(sc);
break;
}
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.
*/
qestop(sc);
ifp->if_flags &= ~IFF_RUNNING;
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interface is marked up and it is stopped, then
* start it.
*/
qeinit(sc);
} else {
/*
* Reset the interface to pick up changes in any other
* flags that affect hardware registers.
*/
qestop(sc);
qeinit(sc);
}
#ifdef QEDEBUG
sc->sc_debug = (ifp->if_flags & IFF_DEBUG) != 0 ? 1 : 0;
#endif
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) {
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*/
if (ifp->if_flags & IFF_RUNNING)
qe_mcreset(sc);
error = 0;
}
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
break;
default:
error = EINVAL;
break;
}
splx(s);
return (error);
}
void
qeinit(sc)
struct qe_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
bus_space_tag_t t = sc->sc_bustag;
bus_space_handle_t cr = sc->sc_cr;
bus_space_handle_t mr = sc->sc_mr;
struct qec_softc *qec = sc->sc_qec;
u_int32_t qecaddr;
u_int8_t *ea;
int s;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
s = splnet();
qestop(sc);
/*
* Allocate descriptor ring and buffers
*/
qec_meminit(&sc->sc_rb, QE_PKT_BUF_SZ);
/* Channel registers: */
bus_space_write_4(t, cr, QE_CRI_RXDS, (u_int32_t)sc->sc_rb.rb_rxddma);
bus_space_write_4(t, cr, QE_CRI_TXDS, (u_int32_t)sc->sc_rb.rb_txddma);
bus_space_write_4(t, cr, QE_CRI_RIMASK, 0);
bus_space_write_4(t, cr, QE_CRI_TIMASK, 0);
bus_space_write_4(t, cr, QE_CRI_QMASK, 0);
bus_space_write_4(t, cr, QE_CRI_MMASK, QE_CR_MMASK_RXCOLL);
bus_space_write_4(t, cr, QE_CRI_CCNT, 0);
bus_space_write_4(t, cr, QE_CRI_PIPG, 0);
qecaddr = sc->sc_channel * qec->sc_msize;
bus_space_write_4(t, cr, QE_CRI_RXWBUF, qecaddr);
bus_space_write_4(t, cr, QE_CRI_RXRBUF, qecaddr);
bus_space_write_4(t, cr, QE_CRI_TXWBUF, qecaddr + qec->sc_rsize);
bus_space_write_4(t, cr, QE_CRI_TXRBUF, qecaddr + qec->sc_rsize);
/* MACE registers: */
bus_space_write_1(t, mr, QE_MRI_PHYCC, QE_MR_PHYCC_ASEL);
bus_space_write_1(t, mr, QE_MRI_XMTFC, QE_MR_XMTFC_APADXMT);
bus_space_write_1(t, mr, QE_MRI_RCVFC, 0);
/*
* Mask MACE's receive interrupt, since we're being notified
* by the QEC after DMA completes.
*/
bus_space_write_1(t, mr, QE_MRI_IMR,
QE_MR_IMR_CERRM | QE_MR_IMR_RCVINTM);
bus_space_write_1(t, mr, QE_MRI_BIUCC,
QE_MR_BIUCC_BSWAP | QE_MR_BIUCC_64TS);
bus_space_write_1(t, mr, QE_MRI_FIFOFC,
QE_MR_FIFOCC_TXF16 | QE_MR_FIFOCC_RXF32 |
QE_MR_FIFOCC_RFWU | QE_MR_FIFOCC_TFWU);
bus_space_write_1(t, mr, QE_MRI_PLSCC, QE_MR_PLSCC_TP);
/*
* Station address
*/
ea = sc->sc_enaddr;
bus_space_write_1(t, mr, QE_MRI_IAC,
QE_MR_IAC_ADDRCHG | QE_MR_IAC_PHYADDR);
bus_space_write_multi_1(t, mr, QE_MRI_PADR, ea, 6);
/* Apply media settings */
qe_ifmedia_upd(ifp);
/*
* Clear Logical address filter
*/
bus_space_write_1(t, mr, QE_MRI_IAC,
QE_MR_IAC_ADDRCHG | QE_MR_IAC_LOGADDR);
bus_space_set_multi_1(t, mr, QE_MRI_LADRF, 0, 8);
bus_space_write_1(t, mr, QE_MRI_IAC, 0);
/* Clear missed packet count (register cleared on read) */
(void)bus_space_read_1(t, mr, QE_MRI_MPC);
#if 0
/* test register: */
bus_space_write_1(t, mr, QE_MRI_UTR, 0);
#endif
/* Reset multicast filter */
qe_mcreset(sc);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
splx(s);
}
/*
* Reset multicast filter.
*/
void
qe_mcreset(sc)
struct qe_softc *sc;
{
struct ethercom *ec = &sc->sc_ethercom;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
bus_space_tag_t t = sc->sc_bustag;
bus_space_handle_t mr = sc->sc_mr;
struct ether_multi *enm;
struct ether_multistep step;
u_int32_t crc;
u_int16_t hash[4];
u_int8_t octet, maccc, *ladrp = (u_int8_t *)&hash[0];
int i, j;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
/* We also enable transmitter & receiver here */
maccc = QE_MR_MACCC_ENXMT | QE_MR_MACCC_ENRCV;
if (ifp->if_flags & IFF_PROMISC) {
maccc |= QE_MR_MACCC_PROM;
bus_space_write_1(t, mr, QE_MRI_MACCC, maccc);
return;
}
if (ifp->if_flags & IFF_ALLMULTI) {
bus_space_write_1(t, mr, QE_MRI_IAC,
QE_MR_IAC_ADDRCHG | QE_MR_IAC_LOGADDR);
bus_space_set_multi_1(t, mr, QE_MRI_LADRF, 0xff, 8);
bus_space_write_1(t, mr, QE_MRI_IAC, 0);
bus_space_write_1(t, mr, QE_MRI_MACCC, maccc);
return;
}
hash[3] = hash[2] = hash[1] = hash[0] = 0;
ETHER_FIRST_MULTI(step, ec, enm);
while (enm != NULL) {
if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
ETHER_ADDR_LEN) != 0) {
/*
* We must listen to a range of multicast
* addresses. For now, just accept all
* multicasts, rather than trying to set only
* those filter bits needed to match the range.
* (At this time, the only use of address
* ranges is for IP multicast routing, for
* which the range is big enough to require
* all bits set.)
*/
bus_space_write_1(t, mr, QE_MRI_IAC,
QE_MR_IAC_ADDRCHG | QE_MR_IAC_LOGADDR);
bus_space_set_multi_1(t, mr, QE_MRI_LADRF, 0xff, 8);
bus_space_write_1(t, mr, QE_MRI_IAC, 0);
ifp->if_flags |= IFF_ALLMULTI;
break;
}
crc = 0xffffffff;
for (i = 0; i < ETHER_ADDR_LEN; i++) {
octet = enm->enm_addrlo[i];
for (j = 0; j < 8; j++) {
if ((crc & 1) ^ (octet & 1)) {
crc >>= 1;
crc ^= MC_POLY_LE;
}
else
crc >>= 1;
octet >>= 1;
}
}
crc >>= 26;
hash[crc >> 4] |= 1 << (crc & 0xf);
ETHER_NEXT_MULTI(step, enm);
}
bus_space_write_1(t, mr, QE_MRI_IAC,
QE_MR_IAC_ADDRCHG | QE_MR_IAC_LOGADDR);
bus_space_write_multi_1(t, mr, QE_MRI_LADRF, ladrp, 8);
bus_space_write_1(t, mr, QE_MRI_IAC, 0);
bus_space_write_1(t, mr, QE_MRI_MACCC, maccc);
}
/*
* Get current media settings.
*/
void
qe_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct qe_softc *sc = ifp->if_softc;
bus_space_tag_t t = sc->sc_bustag;
bus_space_handle_t mr = sc->sc_mr;
u_int8_t v;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
v = bus_space_read_1(t, mr, QE_MRI_PLSCC);
switch (bus_space_read_1(t, mr, QE_MRI_PLSCC) & QE_MR_PLSCC_PORTMASK) {
case QE_MR_PLSCC_TP:
ifmr->ifm_active = IFM_ETHER | IFM_10_T;
break;
case QE_MR_PLSCC_AUI:
ifmr->ifm_active = IFM_ETHER | IFM_10_5;
break;
case QE_MR_PLSCC_GPSI:
case QE_MR_PLSCC_DAI:
/* ... */
break;
}
v = bus_space_read_1(t, mr, QE_MRI_PHYCC);
ifmr->ifm_status |= IFM_AVALID;
if ((v & QE_MR_PHYCC_LNKFL) != 0)
ifmr->ifm_status &= ~IFM_ACTIVE;
else
ifmr->ifm_status |= IFM_ACTIVE;
}
/*
* Set media options.
*/
int
qe_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct qe_softc *sc = ifp->if_softc;
struct ifmedia *ifm = &sc->sc_ifmedia;
bus_space_tag_t t = sc->sc_bustag;
bus_space_handle_t mr = sc->sc_mr;
int newmedia = ifm->ifm_media;
u_int8_t plscc, phycc;
#if defined(SUN4U) || defined(__GNUC__)
(void)&t;
#endif
if (IFM_TYPE(newmedia) != IFM_ETHER)
return (EINVAL);
plscc = bus_space_read_1(t, mr, QE_MRI_PLSCC) & ~QE_MR_PLSCC_PORTMASK;
phycc = bus_space_read_1(t, mr, QE_MRI_PHYCC) & ~QE_MR_PHYCC_ASEL;
if (IFM_SUBTYPE(newmedia) == IFM_AUTO)
phycc |= QE_MR_PHYCC_ASEL;
else if (IFM_SUBTYPE(newmedia) == IFM_10_T)
plscc |= QE_MR_PLSCC_TP;
else if (IFM_SUBTYPE(newmedia) == IFM_10_5)
plscc |= QE_MR_PLSCC_AUI;
bus_space_write_1(t, mr, QE_MRI_PLSCC, plscc);
bus_space_write_1(t, mr, QE_MRI_PHYCC, phycc);
return (0);
}