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NetBSD/sys/dev/qbus/if_qe.c

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/* $NetBSD: if_qe.c,v 1.49 2001/11/13 07:11:24 lukem Exp $ */
/*
* Copyright (c) 1999 Ludd, University of Lule}, Sweden. 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 at Ludd, University of
* Lule}, Sweden and its contributors.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for DEQNA/DELQA ethernet cards.
* Things that is still to do:
* Handle ubaresets. Does not work at all right now.
* Fix ALLMULTI reception. But someone must tell me how...
* Collect statistics.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_qe.c,v 1.49 2001/11/13 07:11:24 lukem Exp $");
#include "opt_inet.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/bus.h>
#include <dev/qbus/ubavar.h>
#include <dev/qbus/if_qereg.h>
#include "ioconf.h"
#define RXDESCS 30 /* # of receive descriptors */
#define TXDESCS 60 /* # transmit descs */
/*
* Structure containing the elements that must be in DMA-safe memory.
*/
struct qe_cdata {
struct qe_ring qc_recv[RXDESCS+1]; /* Receive descriptors */
struct qe_ring qc_xmit[TXDESCS+1]; /* Transmit descriptors */
u_int8_t qc_setup[128]; /* Setup packet layout */
};
struct qe_softc {
struct device sc_dev; /* Configuration common part */
struct evcnt sc_intrcnt; /* Interrupt counting */
struct ethercom sc_ec; /* Ethernet common part */
#define sc_if sc_ec.ec_if /* network-visible interface */
bus_space_tag_t sc_iot;
bus_addr_t sc_ioh;
bus_dma_tag_t sc_dmat;
struct qe_cdata *sc_qedata; /* Descriptor struct */
struct qe_cdata *sc_pqedata; /* Unibus address of above */
struct mbuf* sc_txmbuf[TXDESCS];
struct mbuf* sc_rxmbuf[RXDESCS];
bus_dmamap_t sc_xmtmap[TXDESCS];
bus_dmamap_t sc_rcvmap[RXDESCS];
struct ubinfo sc_ui;
int sc_intvec; /* Interrupt vector */
int sc_nexttx;
int sc_inq;
int sc_lastack;
int sc_nextrx;
int sc_setup; /* Setup packet in queue */
};
static int qematch(struct device *, struct cfdata *, void *);
static void qeattach(struct device *, struct device *, void *);
static void qeinit(struct qe_softc *);
static void qestart(struct ifnet *);
static void qeintr(void *);
static int qeioctl(struct ifnet *, u_long, caddr_t);
static int qe_add_rxbuf(struct qe_softc *, int);
static void qe_setup(struct qe_softc *);
static void qetimeout(struct ifnet *);
struct cfattach qe_ca = {
sizeof(struct qe_softc), qematch, qeattach
};
#define QE_WCSR(csr, val) \
bus_space_write_2(sc->sc_iot, sc->sc_ioh, csr, val)
#define QE_RCSR(csr) \
bus_space_read_2(sc->sc_iot, sc->sc_ioh, csr)
#define LOWORD(x) ((int)(x) & 0xffff)
#define HIWORD(x) (((int)(x) >> 16) & 0x3f)
/*
* Check for present DEQNA. Done by sending a fake setup packet
* and wait for interrupt.
*/
int
qematch(struct device *parent, struct cfdata *cf, void *aux)
{
struct qe_softc ssc;
struct qe_softc *sc = &ssc;
struct uba_attach_args *ua = aux;
struct uba_softc *ubasc = (struct uba_softc *)parent;
struct ubinfo ui;
#define PROBESIZE (sizeof(struct qe_ring) * 4 + 128)
struct qe_ring ring[15]; /* For diag purposes only */
struct qe_ring *rp;
int error;
bzero(sc, sizeof(struct qe_softc));
bzero(ring, PROBESIZE);
sc->sc_iot = ua->ua_iot;
sc->sc_ioh = ua->ua_ioh;
sc->sc_dmat = ua->ua_dmat;
ubasc->uh_lastiv -= 4;
QE_WCSR(QE_CSR_CSR, QE_RESET);
QE_WCSR(QE_CSR_VECTOR, ubasc->uh_lastiv);
/*
* Map the ring area. Actually this is done only to be able to
* send and receive a internal packet; some junk is loopbacked
* so that the DEQNA has a reason to interrupt.
*/
ui.ui_size = PROBESIZE;
ui.ui_vaddr = (caddr_t)&ring[0];
if ((error = uballoc((void *)parent, &ui, UBA_CANTWAIT)))
return 0;
/*
* Init a simple "fake" receive and transmit descriptor that
* points to some unused area. Send a fake setup packet.
*/
rp = (void *)ui.ui_baddr;
ring[0].qe_flag = ring[0].qe_status1 = QE_NOTYET;
ring[0].qe_addr_lo = LOWORD(&rp[4]);
ring[0].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID | QE_EOMSG | QE_SETUP;
ring[0].qe_buf_len = 128;
ring[2].qe_flag = ring[2].qe_status1 = QE_NOTYET;
ring[2].qe_addr_lo = LOWORD(&rp[4]);
ring[2].qe_addr_hi = HIWORD(&rp[4]) | QE_VALID;
ring[2].qe_buf_len = 128;
QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET);
DELAY(1000);
/*
* Start the interface and wait for the packet.
*/
QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT);
QE_WCSR(QE_CSR_RCLL, LOWORD(&rp[2]));
QE_WCSR(QE_CSR_RCLH, HIWORD(&rp[2]));
QE_WCSR(QE_CSR_XMTL, LOWORD(rp));
QE_WCSR(QE_CSR_XMTH, HIWORD(rp));
DELAY(10000);
/*
* All done with the bus resources.
*/
ubfree((void *)parent, &ui);
return 1;
}
/*
* Interface exists: make available by filling in network interface
* record. System will initialize the interface when it is ready
* to accept packets.
*/
void
qeattach(struct device *parent, struct device *self, void *aux)
{
struct uba_attach_args *ua = aux;
struct uba_softc *ubasc = (struct uba_softc *)parent;
struct qe_softc *sc = (struct qe_softc *)self;
struct ifnet *ifp = (struct ifnet *)&sc->sc_if;
struct qe_ring *rp;
u_int8_t enaddr[ETHER_ADDR_LEN];
int i, error;
sc->sc_iot = ua->ua_iot;
sc->sc_ioh = ua->ua_ioh;
sc->sc_dmat = ua->ua_dmat;
/*
* Allocate DMA safe memory for descriptors and setup memory.
*/
sc->sc_ui.ui_size = sizeof(struct qe_cdata);
if ((error = ubmemalloc((struct uba_softc *)parent, &sc->sc_ui, 0))) {
printf(": unable to ubmemalloc(), error = %d\n", error);
return;
}
sc->sc_pqedata = (struct qe_cdata *)sc->sc_ui.ui_baddr;
sc->sc_qedata = (struct qe_cdata *)sc->sc_ui.ui_vaddr;
/*
* Zero the newly allocated memory.
*/
bzero(sc->sc_qedata, sizeof(struct qe_cdata));
/*
* Create the transmit descriptor DMA maps. We take advantage
* of the fact that the Qbus address space is big, and therefore
* allocate map registers for all transmit descriptors also,
* so that we can avoid this each time we send a packet.
*/
for (i = 0; i < TXDESCS; i++) {
if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES,
1, MCLBYTES, 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW,
&sc->sc_xmtmap[i]))) {
printf(": unable to create tx DMA map %d, error = %d\n",
i, error);
goto fail_4;
}
}
/*
* Create receive buffer DMA maps.
*/
for (i = 0; i < RXDESCS; i++) {
if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1,
MCLBYTES, 0, BUS_DMA_NOWAIT,
&sc->sc_rcvmap[i]))) {
printf(": unable to create rx DMA map %d, error = %d\n",
i, error);
goto fail_5;
}
}
/*
* Pre-allocate the receive buffers.
*/
for (i = 0; i < RXDESCS; i++) {
if ((error = qe_add_rxbuf(sc, i)) != 0) {
printf(": unable to allocate or map rx buffer %d\n,"
" error = %d\n", i, error);
goto fail_6;
}
}
/*
* Create ring loops of the buffer chains.
* This is only done once.
*/
rp = sc->sc_qedata->qc_recv;
rp[RXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_recv[0]);
rp[RXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_recv[0]) |
QE_VALID | QE_CHAIN;
rp[RXDESCS].qe_flag = rp[RXDESCS].qe_status1 = QE_NOTYET;
rp = sc->sc_qedata->qc_xmit;
rp[TXDESCS].qe_addr_lo = LOWORD(&sc->sc_pqedata->qc_xmit[0]);
rp[TXDESCS].qe_addr_hi = HIWORD(&sc->sc_pqedata->qc_xmit[0]) |
QE_VALID | QE_CHAIN;
rp[TXDESCS].qe_flag = rp[TXDESCS].qe_status1 = QE_NOTYET;
/*
* Get the vector that were set at match time, and remember it.
*/
sc->sc_intvec = ubasc->uh_lastiv;
QE_WCSR(QE_CSR_CSR, QE_RESET);
DELAY(1000);
QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET);
/*
* Read out ethernet address and tell which type this card is.
*/
for (i = 0; i < 6; i++)
enaddr[i] = QE_RCSR(i * 2) & 0xff;
QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec | 1);
printf("\n%s: %s, hardware address %s\n", sc->sc_dev.dv_xname,
QE_RCSR(QE_CSR_VECTOR) & 1 ? "delqa":"deqna",
ether_sprintf(enaddr));
QE_WCSR(QE_CSR_VECTOR, QE_RCSR(QE_CSR_VECTOR) & ~1); /* ??? */
uba_intr_establish(ua->ua_icookie, ua->ua_cvec, qeintr,
sc, &sc->sc_intrcnt);
evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt,
sc->sc_dev.dv_xname, "intr");
strcpy(ifp->if_xname, sc->sc_dev.dv_xname);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_start = qestart;
ifp->if_ioctl = qeioctl;
ifp->if_watchdog = qetimeout;
IFQ_SET_READY(&ifp->if_snd);
/*
* Attach the interface.
*/
if_attach(ifp);
ether_ifattach(ifp, enaddr);
return;
/*
* Free any resources we've allocated during the failed attach
* attempt. Do this in reverse order and fall through.
*/
fail_6:
for (i = 0; i < RXDESCS; i++) {
if (sc->sc_rxmbuf[i] != NULL) {
bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[i]);
m_freem(sc->sc_rxmbuf[i]);
}
}
fail_5:
for (i = 0; i < RXDESCS; i++) {
if (sc->sc_xmtmap[i] != NULL)
bus_dmamap_destroy(sc->sc_dmat, sc->sc_xmtmap[i]);
}
fail_4:
for (i = 0; i < TXDESCS; i++) {
if (sc->sc_rcvmap[i] != NULL)
bus_dmamap_destroy(sc->sc_dmat, sc->sc_rcvmap[i]);
}
}
/*
* Initialization of interface.
*/
void
qeinit(struct qe_softc *sc)
{
struct ifnet *ifp = (struct ifnet *)&sc->sc_if;
struct qe_cdata *qc = sc->sc_qedata;
int i;
/*
* Reset the interface.
*/
QE_WCSR(QE_CSR_CSR, QE_RESET);
DELAY(1000);
QE_WCSR(QE_CSR_CSR, QE_RCSR(QE_CSR_CSR) & ~QE_RESET);
QE_WCSR(QE_CSR_VECTOR, sc->sc_intvec);
sc->sc_nexttx = sc->sc_inq = sc->sc_lastack = 0;
/*
* Release and init transmit descriptors.
*/
for (i = 0; i < TXDESCS; i++) {
if (sc->sc_txmbuf[i]) {
bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[i]);
m_freem(sc->sc_txmbuf[i]);
sc->sc_txmbuf[i] = 0;
}
qc->qc_xmit[i].qe_addr_hi = 0; /* Clear valid bit */
qc->qc_xmit[i].qe_status1 = qc->qc_xmit[i].qe_flag = QE_NOTYET;
}
/*
* Init receive descriptors.
*/
for (i = 0; i < RXDESCS; i++)
qc->qc_recv[i].qe_status1 = qc->qc_recv[i].qe_flag = QE_NOTYET;
sc->sc_nextrx = 0;
/*
* Write the descriptor addresses to the device.
* Receiving packets will be enabled in the interrupt routine.
*/
QE_WCSR(QE_CSR_CSR, QE_INT_ENABLE|QE_XMIT_INT|QE_RCV_INT);
QE_WCSR(QE_CSR_RCLL, LOWORD(sc->sc_pqedata->qc_recv));
QE_WCSR(QE_CSR_RCLH, HIWORD(sc->sc_pqedata->qc_recv));
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
/*
* Send a setup frame.
* This will start the transmit machinery as well.
*/
qe_setup(sc);
}
/*
* Start output on interface.
*/
void
qestart(struct ifnet *ifp)
{
struct qe_softc *sc = ifp->if_softc;
struct qe_cdata *qc = sc->sc_qedata;
paddr_t buffer;
struct mbuf *m, *m0;
int idx, len, s, i, totlen, error;
short orword, csr;
if ((QE_RCSR(QE_CSR_CSR) & QE_RCV_ENABLE) == 0)
return;
s = splnet();
while (sc->sc_inq < (TXDESCS - 1)) {
if (sc->sc_setup) {
qe_setup(sc);
continue;
}
idx = sc->sc_nexttx;
IFQ_POLL(&ifp->if_snd, m);
if (m == 0)
goto out;
/*
* Count number of mbufs in chain.
* Always do DMA directly from mbufs, therefore the transmit
* ring is really big.
*/
for (m0 = m, i = 0; m0; m0 = m0->m_next)
if (m0->m_len)
i++;
if (i >= TXDESCS)
panic("qestart");
if ((i + sc->sc_inq) >= (TXDESCS - 1)) {
ifp->if_flags |= IFF_OACTIVE;
goto out;
}
IFQ_DEQUEUE(&ifp->if_snd, m);
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
/*
* m now points to a mbuf chain that can be loaded.
* Loop around and set it.
*/
totlen = 0;
for (m0 = m; m0; m0 = m0->m_next) {
error = bus_dmamap_load(sc->sc_dmat, sc->sc_xmtmap[idx],
mtod(m0, void *), m0->m_len, 0, 0);
buffer = sc->sc_xmtmap[idx]->dm_segs[0].ds_addr;
len = m0->m_len;
if (len == 0)
continue;
totlen += len;
/* Word alignment calc */
orword = 0;
if (totlen == m->m_pkthdr.len) {
if (totlen < ETHER_MIN_LEN)
len += (ETHER_MIN_LEN - totlen);
orword |= QE_EOMSG;
sc->sc_txmbuf[idx] = m;
}
if ((buffer & 1) || (len & 1))
len += 2;
if (buffer & 1)
orword |= QE_ODDBEGIN;
if ((buffer + len) & 1)
orword |= QE_ODDEND;
qc->qc_xmit[idx].qe_buf_len = -(len/2);
qc->qc_xmit[idx].qe_addr_lo = LOWORD(buffer);
qc->qc_xmit[idx].qe_addr_hi = HIWORD(buffer);
qc->qc_xmit[idx].qe_flag =
qc->qc_xmit[idx].qe_status1 = QE_NOTYET;
qc->qc_xmit[idx].qe_addr_hi |= (QE_VALID | orword);
if (++idx == TXDESCS)
idx = 0;
sc->sc_inq++;
}
#ifdef DIAGNOSTIC
if (totlen != m->m_pkthdr.len)
panic("qestart: len fault");
#endif
/*
* Kick off the transmit logic, if it is stopped.
*/
csr = QE_RCSR(QE_CSR_CSR);
if (csr & QE_XL_INVALID) {
QE_WCSR(QE_CSR_XMTL,
LOWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx]));
QE_WCSR(QE_CSR_XMTH,
HIWORD(&sc->sc_pqedata->qc_xmit[sc->sc_nexttx]));
}
sc->sc_nexttx = idx;
}
if (sc->sc_inq == (TXDESCS - 1))
ifp->if_flags |= IFF_OACTIVE;
out: if (sc->sc_inq)
ifp->if_timer = 5; /* If transmit logic dies */
splx(s);
}
static void
qeintr(void *arg)
{
struct qe_softc *sc = arg;
struct qe_cdata *qc = sc->sc_qedata;
struct ifnet *ifp = &sc->sc_if;
struct mbuf *m;
int csr, status1, status2, len;
csr = QE_RCSR(QE_CSR_CSR);
QE_WCSR(QE_CSR_CSR, QE_RCV_ENABLE | QE_INT_ENABLE | QE_XMIT_INT |
QE_RCV_INT | QE_ILOOP);
if (csr & QE_RCV_INT)
while (qc->qc_recv[sc->sc_nextrx].qe_status1 != QE_NOTYET) {
status1 = qc->qc_recv[sc->sc_nextrx].qe_status1;
status2 = qc->qc_recv[sc->sc_nextrx].qe_status2;
m = sc->sc_rxmbuf[sc->sc_nextrx];
len = ((status1 & QE_RBL_HI) |
(status2 & QE_RBL_LO)) + 60;
qe_add_rxbuf(sc, sc->sc_nextrx);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = len;
if (++sc->sc_nextrx == RXDESCS)
sc->sc_nextrx = 0;
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
if ((status1 & QE_ESETUP) == 0)
(*ifp->if_input)(ifp, m);
else
m_freem(m);
}
if (csr & (QE_XMIT_INT|QE_XL_INVALID)) {
while (qc->qc_xmit[sc->sc_lastack].qe_status1 != QE_NOTYET) {
int idx = sc->sc_lastack;
sc->sc_inq--;
if (++sc->sc_lastack == TXDESCS)
sc->sc_lastack = 0;
/* XXX collect statistics */
qc->qc_xmit[idx].qe_addr_hi &= ~QE_VALID;
qc->qc_xmit[idx].qe_status1 =
qc->qc_xmit[idx].qe_flag = QE_NOTYET;
if (qc->qc_xmit[idx].qe_addr_hi & QE_SETUP)
continue;
bus_dmamap_unload(sc->sc_dmat, sc->sc_xmtmap[idx]);
if (sc->sc_txmbuf[idx]) {
m_freem(sc->sc_txmbuf[idx]);
sc->sc_txmbuf[idx] = 0;
}
}
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
qestart(ifp); /* Put in more in queue */
}
/*
* How can the receive list get invalid???
* Verified that it happens anyway.
*/
if ((qc->qc_recv[sc->sc_nextrx].qe_status1 == QE_NOTYET) &&
(QE_RCSR(QE_CSR_CSR) & QE_RL_INVALID)) {
QE_WCSR(QE_CSR_RCLL,
LOWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx]));
QE_WCSR(QE_CSR_RCLH,
HIWORD(&sc->sc_pqedata->qc_recv[sc->sc_nextrx]));
}
}
/*
* Process an ioctl request.
*/
int
qeioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct qe_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct ifaddr *ifa = (struct ifaddr *)data;
int s = splnet(), error = 0;
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
}
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,
* stop it. (by disabling receive mechanism).
*/
QE_WCSR(QE_CSR_CSR,
QE_RCSR(QE_CSR_CSR) & ~QE_RCV_ENABLE);
ifp->if_flags &= ~IFF_RUNNING;
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interface it marked up and it is stopped, then
* start it.
*/
qeinit(sc);
} else if ((ifp->if_flags & IFF_UP) != 0) {
/*
* Send a new setup packet to match any new changes.
* (Like IFF_PROMISC etc)
*/
qe_setup(sc);
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
/*
* Update our multicast list.
*/
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ec):
ether_delmulti(ifr, &sc->sc_ec);
if (error == ENETRESET) {
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*/
qe_setup(sc);
error = 0;
}
break;
default:
error = EINVAL;
}
splx(s);
return (error);
}
/*
* Add a receive buffer to the indicated descriptor.
*/
int
qe_add_rxbuf(struct qe_softc *sc, int i)
{
struct mbuf *m;
struct qe_ring *rp;
vaddr_t addr;
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 (sc->sc_rxmbuf[i] != NULL)
bus_dmamap_unload(sc->sc_dmat, sc->sc_rcvmap[i]);
error = bus_dmamap_load(sc->sc_dmat, sc->sc_rcvmap[i],
m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT);
if (error)
panic("%s: can't load rx DMA map %d, error = %d\n",
sc->sc_dev.dv_xname, i, error);
sc->sc_rxmbuf[i] = m;
bus_dmamap_sync(sc->sc_dmat, sc->sc_rcvmap[i], 0,
sc->sc_rcvmap[i]->dm_mapsize, BUS_DMASYNC_PREREAD);
/*
* We know that the mbuf cluster is page aligned. Also, be sure
* that the IP header will be longword aligned.
*/
m->m_data += 2;
addr = sc->sc_rcvmap[i]->dm_segs[0].ds_addr + 2;
rp = &sc->sc_qedata->qc_recv[i];
rp->qe_flag = rp->qe_status1 = QE_NOTYET;
rp->qe_addr_lo = LOWORD(addr);
rp->qe_addr_hi = HIWORD(addr) | QE_VALID;
rp->qe_buf_len = -(m->m_ext.ext_size - 2)/2;
return (0);
}
/*
* Create a setup packet and put in queue for sending.
*/
void
qe_setup(struct qe_softc *sc)
{
struct ether_multi *enm;
struct ether_multistep step;
struct qe_cdata *qc = sc->sc_qedata;
struct ifnet *ifp = &sc->sc_if;
u_int8_t *enaddr = LLADDR(ifp->if_sadl);
int i, j, k, idx, s;
s = splnet();
if (sc->sc_inq == (TXDESCS - 1)) {
sc->sc_setup = 1;
splx(s);
return;
}
sc->sc_setup = 0;
/*
* Init the setup packet with valid info.
*/
memset(qc->qc_setup, 0xff, sizeof(qc->qc_setup)); /* Broadcast */
for (i = 0; i < ETHER_ADDR_LEN; i++)
qc->qc_setup[i * 8 + 1] = enaddr[i]; /* Own address */
/*
* Multicast handling. The DEQNA can handle up to 12 direct
* ethernet addresses.
*/
j = 3; k = 0;
ifp->if_flags &= ~IFF_ALLMULTI;
ETHER_FIRST_MULTI(step, &sc->sc_ec, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6)) {
ifp->if_flags |= IFF_ALLMULTI;
break;
}
for (i = 0; i < ETHER_ADDR_LEN; i++)
qc->qc_setup[i * 8 + j + k] = enm->enm_addrlo[i];
j++;
if (j == 8) {
j = 1; k += 64;
}
if (k > 64) {
ifp->if_flags |= IFF_ALLMULTI;
break;
}
ETHER_NEXT_MULTI(step, enm);
}
idx = sc->sc_nexttx;
qc->qc_xmit[idx].qe_buf_len = -64;
/*
* How is the DEQNA turned in ALLMULTI mode???
* Until someone tells me, fall back to PROMISC when more than
* 12 ethernet addresses.
*/
if (ifp->if_flags & IFF_ALLMULTI)
ifp->if_flags |= IFF_PROMISC;
else if (ifp->if_pcount == 0)
ifp->if_flags &= ~IFF_PROMISC;
if (ifp->if_flags & IFF_PROMISC)
qc->qc_xmit[idx].qe_buf_len = -65;
qc->qc_xmit[idx].qe_addr_lo = LOWORD(sc->sc_pqedata->qc_setup);
qc->qc_xmit[idx].qe_addr_hi =
HIWORD(sc->sc_pqedata->qc_setup) | QE_SETUP | QE_EOMSG;
qc->qc_xmit[idx].qe_status1 = qc->qc_xmit[idx].qe_flag = QE_NOTYET;
qc->qc_xmit[idx].qe_addr_hi |= QE_VALID;
if (QE_RCSR(QE_CSR_CSR) & QE_XL_INVALID) {
QE_WCSR(QE_CSR_XMTL,
LOWORD(&sc->sc_pqedata->qc_xmit[idx]));
QE_WCSR(QE_CSR_XMTH,
HIWORD(&sc->sc_pqedata->qc_xmit[idx]));
}
sc->sc_inq++;
if (++sc->sc_nexttx == TXDESCS)
sc->sc_nexttx = 0;
splx(s);
}
/*
* Check for dead transmit logic. Not uncommon.
*/
void
qetimeout(struct ifnet *ifp)
{
struct qe_softc *sc = ifp->if_softc;
if (sc->sc_inq == 0)
return;
printf("%s: xmit logic died, resetting...\n", sc->sc_dev.dv_xname);
/*
* Do a reset of interface, to get it going again.
* Will it work by just restart the transmit logic?
*/
qeinit(sc);
}
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