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freebsd-dev/sys/dev/pccard/if_xe.c

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Virgin import of Xircom PCCARD driver v1.13
1999-05-14 01:41:26 +00:00
/*-
* Copyright (c) 1998, 1999 Scott Mitchell
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id: if_xe.c,v 1.13 1999/01/24 22:14:54 root Exp $
*/
/*
* Portions of this software were derived from Werner Koch's xirc2ps driver
* for Linux under the terms of the following license (from v1.30 of the
* xirc2ps driver):
*
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* 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, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 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 author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED ``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.
*/
/*
* FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters.
* The following cards and media are supported (Ethernet part only on the
* multifunction CEM cards):
* CE2 10BASE-2, 10BASE-T (I think)
* CEM28 ditto
* CEM33 ditto
* CE3 10BASE-T, 100BASE-TX
* CEM56 ditto
* Certain Intel and Compaq branded cards are also rumoured to work.
*
* <Acknowledgements>
*
* <Contact details>
*/
#define XE_DEBUG 1
#include "xe.h"
#include "card.h"
#include "apm.h"
#include "bpfilter.h"
#if NXE > 0
#if NCARD > 0
#include <sys/param.h>
#include <sys/cdefs.h>
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_mib.h>
#if NBPFILTER > 0
#include <net/bpf.h>
#endif /* NBPFILTER > 0 */
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/if_xereg.h>
#include <machine/clock.h>
#if NAPM > 0
#include <machine/apm_bios.h>
#endif /* NAPM > 0 */
#include <pccard/cardinfo.h>
#include <pccard/cis.h>
#include <pccard/driver.h>
#include <pccard/slot.h>
/*
* One of these structures per allocated device
*/
struct xe_softc {
struct arpcom arpcom;
struct ifmedia ifmedia;
struct isa_device *dev;
struct pccard_devinfo *crd;
struct ifmib_iso_8802_3 mibdata;
#if NAPM > 0
struct apmhook suspend_hook;
struct apmhook resume_hook;
#endif /* NAPM > 0 */
char *card_type; /* Card model name */
char *vendor; /* Card manufacturer */
int srev; /* Silicon revision */
int modem; /* 1 = Multifunction card with modem */
int ce3; /* 1 = CE3 class (100Mbit) adapter */
int cem56; /* 1 = CEM56 class (CE3 + 56Kbps modem) adapter */
int gone; /* 1 = Card bailed out */
int tx_queued; /* Packets currently waiting to transmit */
int tx_ptr; /* Last value of PTR reg on card */
int tx_collisions; /* Collisions since last successful send */
int tx_timeouts; /* Count of transmit timeouts */
int probe; /* XXX 0 = use value in port, 1 = look for a port */
int port; /* XXX 0 = Unknown, 1 = 10Base2, 2 = 10BaseT, 4 = 100BaseTX */
};
static struct xe_softc *sca[MAXSLOT];
/*
* For accessing card registers
*/
#define XE_INB(r) inb(scp->dev->id_iobase+(r))
#define XE_INW(r) inw(scp->dev->id_iobase+(r))
#define XE_OUTB(r, b) outb(scp->dev->id_iobase+(r), (b))
#define XE_OUTW(r, w) outw(scp->dev->id_iobase+(r), (w))
#define XE_SELECT_PAGE(p) XE_OUTB(XE_PSR, (p))
/*
* PC-Card driver routines
*/
static int xe_card_init (struct pccard_devinfo *devi);
static void xe_card_unload (struct pccard_devinfo *devi);
static int xe_card_intr (struct pccard_devinfo *devi);
/*
* isa_driver member functions
*/
static int xe_probe (struct isa_device *dev);
static int xe_attach (struct isa_device *dev);
/*
* ifnet member functions
*/
static void xe_init (void *xscp);
static void xe_start (struct ifnet *ifp);
static int xe_ioctl (struct ifnet *ifp, u_long command, caddr_t data);
static void xe_watchdog (struct ifnet *ifp);
/*
* Other random functions
*/
static void xe_stop (struct xe_softc *scp);
static void xe_reset (struct xe_softc *scp);
static void xe_setmulti (struct xe_softc *scp);
static void xe_setaddrs (struct xe_softc *scp);
static int xe_pio_write_packet (struct xe_softc *scp, struct mbuf *mbp);
#ifdef XE_DEBUG
static void xe_reg_dump (struct xe_softc *scp);
#endif
/*
* Media selection functions
*/
static int xe_media_change (struct ifnet *ifp);
static void xe_media_status (struct ifnet *ifp, struct ifmediareq *ifm);
/*
* MII (Medium Independent Interface) functions
*/
static void xe_mii_clock (struct xe_softc *scp);
static u_int16_t xe_mii_getbit (struct xe_softc *scp);
static void xe_mii_putbit (struct xe_softc *scp, u_int16_t data);
static void xe_mii_putbits (struct xe_softc *scp, u_int16_t data, int len);
static u_int16_t xe_mii_read (struct xe_softc *scp, u_int8_t phy, u_int8_t reg);
static void xe_mii_write (struct xe_softc *scp, u_int8_t phy, u_int8_t reg, u_int16_t data, int len);
static int xe_mii_init (struct xe_softc *scp);
#ifdef XE_DEBUG
static void xe_mii_dump (struct xe_softc *scp);
#endif
#if NAPM > 0
/*
* APM hook functions
*/
static int xe_suspend (void *xunit);
static int xe_resume (void *xunit);
#endif /* NAPM > 0 */
/*
* PCMCIA driver hooks
*/
static struct pccard_device xe_info = {
"xe",
xe_card_init,
xe_card_unload,
xe_card_intr,
0,
&net_imask
};
DATA_SET(pccarddrv_set, xe_info);
/*
* ISA driver hooks
*/
struct isa_driver xedriver = {
xe_probe,
xe_attach,
"xe"
};
/*
* All of the supported devices are PCMCIA cards. I have no idea if it's even
* possible to successfully probe/attach these at boot time (pccardd normally
* does a lot of setup work) so I don't even bother trying.
*/
static int
xe_probe (struct isa_device *dev) {
bzero(sca, MAXSLOT * sizeof(sca[0]));
return 0;
}
/*
* Attach a device (called when xe_card_init succeeds). Assume that the probe
* routine has set up the softc structure correctly and that we can trust the
* unit number.
*/
static int
xe_attach (struct isa_device *dev)
{
struct ifnet *ifp;
struct xe_softc *scp;
int unit, i;
unit = dev->id_unit;
scp = sca[unit];
ifp = &(scp->arpcom.ac_if);
/*
* Power down the interface
*/
xe_stop(scp);
/*
* Initialise the ifnet structure
*/
if (!ifp->if_name) {
ifp->if_softc = scp;
ifp->if_name = "xe";
ifp->if_unit = unit;
ifp->if_timer = 0;
ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
ifp->if_linkmib = &scp->mibdata;
ifp->if_linkmiblen = sizeof scp->mibdata;
ifp->if_output = ether_output;
ifp->if_start = xe_start;
ifp->if_ioctl = xe_ioctl;
ifp->if_watchdog = xe_watchdog;
ifp->if_init = xe_init;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
if_attach(ifp);
ether_ifattach(ifp);
}
#if NBPFILTER > 0
/*
* If BPF is in the kernel, call the attach for it
*/
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
/*
* Print some useful information
*/
printf("\nxe%d: %s %s%s%s\n",
unit,
scp->vendor,
scp->card_type,
scp->ce3 ? ", 100Mbps capable" : "",
scp->cem56 ? ", with modem" : "");
printf("xe%d: Ethernet address %02x", unit, scp->arpcom.ac_enaddr[0]);
for (i = 1; i < ETHER_ADDR_LEN; i++) {
printf(":%02x", scp->arpcom.ac_enaddr[i]);
}
printf("\n");
return 1;
}
/*
* Interrupt service routine. This shouldn't ever get called, but if it does
* we just call the card interrupt handler with the appropriate arguments.
*/
void
xeintr(int unit) {
xe_card_intr(sca[unit]->crd);
}
/*
* Initialize device. Except for the media selection stuff this is pretty
* much verbatim from the Linux code.
*/
static void
xe_init(void *xscp) {
struct xe_softc *scp;
struct ifnet *ifp;
int unit, s;
scp = xscp;
ifp = &scp->arpcom.ac_if;
unit = scp->crd->isahd.id_unit;
if (scp->gone)
return;
if (TAILQ_EMPTY(&ifp->if_addrhead))
return;
s = splimp();
/*
* Reset transmitter flags
*/
scp->tx_queued = 0;
scp->tx_ptr = 0;
scp->tx_collisions = 0;
ifp->if_timer = 0;
/*
* Hard, then soft, reset the card.
*/
XE_SELECT_PAGE(4);
DELAY(1);
XE_OUTB(XE_GPR1, 0); /* Power off */
DELAY(40000);
if (scp->ce3)
XE_OUTB(XE_GPR1, 1); /* And back on again */
else
XE_OUTB(XE_GPR1, 5); /* Also set AIC bit, whatever that is */
DELAY(40000);
XE_OUTB(XE_CR, XE_CR_SOFT_RESET); /* Software reset */
DELAY(40000);
XE_OUTB(XE_CR, 0);
DELAY(40000);
if (scp->ce3) {
/*
* set GP1 and GP2 as outputs (bits 2 & 3)
* set GP1 low to power on the ML6692 (bit 0)
* set GP2 high to power on the 10Mhz chip (bit 1)
*/
XE_SELECT_PAGE(4);
XE_OUTB(XE_GPR0, 0x0e);
}
/*
* Wait for everything to wake up.
*/
DELAY(500000);
/*
* Get silicon revision number
*/
if (scp->ce3)
scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
else
scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
#ifdef XE_DEBUG
printf("xe%d: silicon revision %d\n", unit, scp->srev);
#endif
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
if (scp->probe) {
if (!scp->ce3) {
XE_SELECT_PAGE(4);
XE_OUTB(XE_GPR0, 4);
scp->probe = 0;
}
}
else if (scp->port == 2) {
/* select 10BaseT */
#ifdef XE_DEBUG
printf("xe%d: selecting 10BaseT\n", unit);
#endif
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC1, 0x80);
}
else if (scp->port == 1) {
/* select 10Base2 */
#ifdef XE_DEBUG
printf("xe%d: selecting 10Base2\n", unit);
#endif
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC1, 0xc0);
}
DELAY(40000);
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/*
* Setup the ECR
*/
XE_SELECT_PAGE(1);
XE_OUTB(XE_IMR0, 0xff); /* Allow all interrupts */
XE_OUTB(XE_IMR1, 0x01); /* Enable Tx underrun detection */
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC0, 0x20); /* Disable source insertion (WTF is that?) */
/*
* Set the 'local memory dividing line' -- splits the 32K card memory into
* 8K for transmit buffers and 24K for receive. This is done automatically
* on newer revision cards.
*/
if (scp->srev != 1) {
XE_SELECT_PAGE(2);
XE_OUTW(XE_RBS, 0x2000);
}
/*
* Set up multicast addresses
*/
xe_setmulti(scp);
/*
* Fix the data offset register -- reset leaves it off-by-one
*/
XE_SELECT_PAGE(0);
XE_OUTW(XE_DOR, 0x2000);
/*
* Set MAC interrupt masks and clear status regs. The bit names are direct
* from the Linux code; I have no idea what most of them do.
*/
XE_SELECT_PAGE(0x40); /* Bit 7..0 */
XE_OUTB(XE_RXM0, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
XE_OUTB(XE_TXM0, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
XE_OUTB(XE_TXM1, 0xb0); /* rsv, rsv, PTD, EXT, rsv, rsv, rsv, rsv */
XE_OUTB(XE_RXS0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
XE_OUTB(XE_TXS0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
XE_OUTB(XE_TXS1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
if (scp->ce3 && xe_mii_init(scp)) {
u_char val;
#ifdef XE_DEBUG
printf("xe%d: found an MII\n", unit);
#endif
if ((scp->port == 4) || scp->cem56) {
/* use MII */
#ifdef XE_DEBUG
printf("xe%d: using MII\n", unit);
#endif
XE_SELECT_PAGE(2);
val = XE_INB(XE_MSR);
val |= 0x08;
XE_OUTB(XE_MSR, val);
DELAY(20000);
}
else {
XE_SELECT_PAGE(0x42);
if (scp->port == 2) {
/* enable 10BaseT */
#ifdef XE_DEBUG
printf("xe%d: selecting 10BaseT\n", unit);
#endif
XE_OUTB(XE_SWC1, 0x80);
}
else {
/* enable 10Base2 */
#ifdef XE_DEBUG
printf("xe%d: selecting 10Base2\n", unit);
#endif
XE_OUTB(XE_SWC1, 0xc0);
}
DELAY(40000);
}
}
else {
XE_SELECT_PAGE(0);
scp->port = (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 2 : 1;
}
/*
* Configure the LEDs
*/
XE_SELECT_PAGE(2);
if (scp->port > 1) {
XE_OUTB(XE_LED, 0x3b); /* For TP: link and activity */
}
else {
XE_OUTB(XE_LED, 0x3a); /* For BNC: !collision and activity */
}
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/***** XXX XXX XXX XXX *****/
/*
* Enable receiver, put MAC online
*/
XE_SELECT_PAGE(0x40);
XE_OUTB(XE_OCR, XE_OCR_RX_ENABLE|XE_OCR_ONLINE);
/*
* Set up IMR, enable interrupts
*/
XE_SELECT_PAGE(1);
XE_OUTB(XE_IMR0, 0xff); /* Enable everything */
DELAY(1);
XE_SELECT_PAGE(0);
XE_OUTB(XE_CR, XE_CR_ENABLE_INTR);
if (scp->modem && !scp->cem56) { /* This bit is just magic */
if (!(XE_INB(0x10) & 0x01)) {
XE_OUTB(0x10, 0x11); /* Unmask master int enable bit */
}
}
XE_SELECT_PAGE(0);
/*
* Attempt to start output
*/
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
xe_start(ifp);
(void)splx(s);
}
/*
* Start output on interface. We make two assumptions here:
* 1) that the current priority is set to splimp _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)
*/
static void
xe_start(struct ifnet *ifp) {
struct xe_softc *scp;
struct mbuf *mbp;
int unit;
scp = ifp->if_softc;
unit = scp->crd->isahd.id_unit;
if (scp->gone)
return;
/*
* Loop while there are packets to be sent, and space to send them.
*/
while (1) {
IF_DEQUEUE(&ifp->if_snd, mbp); /* Suck a packet off the send queue */
if (mbp == NULL) {
/*
* We are using the !OACTIVE flag to indicate to the outside world that
* we can accept an additional packet rather than that the transmitter
* is _actually_ active. Indeed, the transmitter may be active, but if
* we haven't filled all the buffers with data then we still want to
* accept more.
*/
ifp->if_flags &= ~IFF_OACTIVE;
return;
}
if (xe_pio_write_packet(scp, mbp) != 0) {
IF_PREPEND(&ifp->if_snd, mbp); /* Push the packet back onto the queue */
ifp->if_flags |= IFF_OACTIVE;
return;
}
#if NBPFILTER > 0
/*
* Tap off here if there is a bpf listener.
*/
if (ifp->if_bpf) {
bpf_mtap(ifp, mbp);
}
#endif /* NBPFILTER > 0 */
ifp->if_timer = 5; /* In case we don't hear from the card again */
scp->tx_queued++;
m_freem(mbp);
}
}
/*
* Process an ioctl request. Adapted from the ed driver.
*/
static int
xe_ioctl (register struct ifnet *ifp, u_long command, caddr_t data) {
struct xe_softc *scp = ifp->if_softc;
int s, error;
scp = ifp->if_softc;
error = 0;
if (scp->gone) {
return ENXIO;
}
s = splimp();
switch (command) {
case SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_LINK2) {
scp->port = 4; /* 100BASE-TX */
scp->probe = 0;
}
else if (ifp->if_flags & IFF_LINK1) {
scp->port = 2; /* 10BASE-T */
scp->probe = 0;
}
else if (ifp->if_flags & IFF_LINK0) {
scp->port = 1; /* 10BASE-2 */
scp->probe = 0;
}
else {
scp->port = 0; /* Unknown */
scp->probe = 1;
}
/*
* If the interface is marked up and stopped, then start it. If it is
* marked down and running, then stop it.
*/
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_flags & IFF_RUNNING))
xe_init(scp);
}
else {
if (ifp->if_flags & IFF_RUNNING)
xe_stop(scp);
}
case SIOCADDMULTI:
case SIOCDELMULTI:
/*
* Multicast list has (maybe) changed; set the hardware filter
* accordingly. This also serves to deal with promiscuous mode if we have
* a BPF listener active.
*/
xe_setmulti(scp);
error = 0;
break;
default:
error = EINVAL;
}
(void)splx(s);
return error;
}
/*
* Device timeout/watchdog routine. Called automatically if we queue a packet
* for transmission but don't get an interrupt within a specified timeout
* (usually 5 seconds). When this happens we assume the worst and reset the
* card.
*/
static void
xe_watchdog(struct ifnet *ifp) {
struct xe_softc *scp;
int unit;
scp = ifp->if_softc;
unit = scp->crd->isahd.id_unit;
if (scp->gone)
return;
printf("xe%d: transmit timeout; resetting card\n", unit);
scp->tx_timeouts++;
ifp->if_oerrors += scp->tx_queued;
xe_reset(scp);
}
/*
* Take interface offline. This is done by powering down the device, which I
* assume means just shutting down the transceiver and Ethernet logic. There
* is probably a more elegant method that doesn't require a full reset to
* recover from.
*/
static void
xe_stop(struct xe_softc *scp) {
struct ifnet *ifp;
ifp = &scp->arpcom.ac_if;
if (scp->gone)
return;
XE_SELECT_PAGE(0);
XE_OUTB(XE_CR, 0); /* Disable interrupts */
XE_SELECT_PAGE(1);
XE_OUTB(XE_IMR0, 0); /* Forbid all interrupts */
XE_SELECT_PAGE(4);
XE_OUTB(XE_GPR1, 0); /* Power down (clear bit 0) */
XE_SELECT_PAGE(0);
ifp->if_flags &= ~IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
}
/*
* Reset the hardware. Power-down the card then re-initialise it. The
* xe_stop() is redundant if xe_init() also does one, but it can't hurt.
*/
static void
xe_reset(struct xe_softc *scp) {
int s;
if (scp->gone)
return;
s = splimp();
xe_stop(scp);
xe_init(scp);
(void)splx(s);
}
/*
* Set up multicast filter and promiscuous mode
*/
static void
xe_setmulti(struct xe_softc *scp) {
struct ifnet *ifp;
struct ifmultiaddr *maddr;
int count;
ifp = &scp->arpcom.ac_if;
maddr = ifp->if_multiaddrs.lh_first;
/* Get length of multicast list */
for (count = 0; maddr != NULL; maddr = maddr->ifma_link.le_next, count++);
if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI) || (count > 9)) {
/*
* Go into promiscuous mode if either of the PROMISC or ALLMULTI flags are
* set, or if we have been asked to deal with more than 9 multicast
* addresses. To do this: set MPE and PME in SWC1
*/
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC1, 0x06);
}
else if ((ifp->if_flags & IFF_MULTICAST) && (count > 0)) {
/*
* Program the filters for up to 9 addresses
*/
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC1, 0);
XE_SELECT_PAGE(0x40);
XE_OUTB(XE_OCR, XE_OCR_OFFLINE);
xe_setaddrs(scp);
XE_SELECT_PAGE(0x40);
XE_OUTB(XE_OCR, XE_OCR_RX_ENABLE|XE_OCR_ONLINE);
}
else {
/*
* No multicast operation (default)
*/
XE_SELECT_PAGE(0x42);
XE_OUTB(XE_SWC1, 0);
}
XE_SELECT_PAGE(0);
}
/*
* Set up all on-chip addresses (for multicast). AFAICS, there are 10
* of these things; the first is our MAC address, the other 9 are mcast
* addresses, padded with the MAC address if there aren't enough.
* XXX - I think the Linux code gets this wrong and only writes one byte for
* XXX - each address. I *think* this code does it right, but it needs more
* XXX - intensive testing to be sure.
*/
static void
xe_setaddrs(struct xe_softc *scp) {
struct ifmultiaddr *maddr;
u_int8_t *addr;
u_int8_t page, slot, byte, i;
maddr = scp->arpcom.ac_if.if_multiaddrs.lh_first;
XE_SELECT_PAGE(page = 0x50);
for (slot = 0, byte = 8; slot < 10; slot++) {
if (slot == 0)
addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
else {
while (maddr != NULL && maddr->ifma_addr->sa_family != AF_LINK)
maddr = maddr->ifma_link.le_next;
if (maddr != NULL)
addr = LLADDR((struct sockaddr_dl *)maddr->ifma_addr);
else
addr = (u_int8_t *)(&scp->arpcom.ac_enaddr);
}
for (i = 0; i < 6; i++, byte++) {
if (byte > 15) {
page++;
byte = 8;
XE_SELECT_PAGE(page);
}
if (scp->ce3)
XE_OUTB(byte, addr[5 - i]);
else
XE_OUTB(byte, addr[i]);
}
}
XE_SELECT_PAGE(0);
}
/*
* Write an outgoing packet to the card using programmed I/O.
*/
static int
xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp) {
struct mbuf *mbp2;
u_int16_t len, pad, free, ok;
u_int8_t *data;
u_int8_t savebyte[2], wantbyte;
/* Get total packet length */
for (len = 0, mbp2 = mbp; mbp2 != NULL; len += mbp2->m_len, mbp2 = mbp2->m_next);
/* Packets < minimum length may need to be padded out */
pad = 0;
if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
pad = (ETHER_MIN_LEN - ETHER_CRC_LEN - len + 1) >> 1;
len = ETHER_MIN_LEN - ETHER_CRC_LEN;
}
/* Check transmit buffer space */
XE_SELECT_PAGE(0);
XE_OUTW(XE_TRS, len+2);
free = XE_INW(XE_TSO);
ok = free & 0x8000;
free &= 0x7fff;
if (free <= len + 2)
return 1;
/* Send packet length to card */
XE_OUTW(XE_EDP, len);
/*
* Write packet to card using PIO (code stolen from the ed driver)
*/
wantbyte = 0;
while (mbp != NULL) {
len = mbp->m_len;
if (len > 0) {
data = mtod(mbp, caddr_t);
if (wantbyte) { /* Finish the last word */
savebyte[1] = *data;
XE_OUTW(XE_EDP, *(u_short *)savebyte);
data++;
len--;
wantbyte = 0;
}
if (len > 1) { /* Output contiguous words */
outsw(scp->dev->id_iobase+XE_EDP, data, len >> 1);
data += len & ~1;
len &= 1;
}
if (len == 1) { /* Save last byte, if necessary */
savebyte[0] = *data;
wantbyte = 1;
}
}
mbp = mbp->m_next;
}
if (wantbyte) /* Last byte for odd-length packets */
XE_OUTW(XE_EDP, *(u_short *)savebyte);
/*
* For CE3 cards, just tell 'em to send -- apparently the card will pad out
* short packets with random cruft. Otherwise, write nonsense words to fill
* out the packet. I guess it is then sent automatically (?)
*/
if (scp->ce3)
XE_OUTB(XE_CR, XE_CR_TX_PACKET|XE_CR_ENABLE_INTR);
else
while (pad > 0)
XE_OUTW(XE_EDP, 0xfeed);
return 0;
}
/**************************************************************
* *
* M I I F U N C T I O N S *
* *
**************************************************************/
#if 0
/*
* Alternative MII/PHY handling code adapted from the xl driver. It doesn't
* seem to work any better than the xirc2_ps stuff, but it's cleaner code.
* Will probably use this if I can ever get the autoneg to work right :(
*/
struct xe_mii_frame {
u_int8_t mii_stdelim;
u_int8_t mii_opcode;
u_int8_t mii_phyaddr;
u_int8_t mii_regaddr;
u_int8_t mii_turnaround;
u_int16_t mii_data;
};
/*
* Sync the PHYs by setting data bit and strobing the clock 32 times.
*/
static void
xe_mii_sync(struct xe_softc *scp) {
register int i;
XE_SELECT_PAGE(2);
XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
for (i = 0; i < 32; i++) {
XE_MII_SET(XE_MII_CLK);
DELAY(1);
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
}
}
/*
* Clock a series of bits through the MII.
*/
static void
xe_mii_send(struct xe_softc *scp, u_int32_t bits, int cnt) {
int i;
XE_SELECT_PAGE(2);
XE_MII_CLR(XE_MII_CLK);
for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
if (bits & i) {
XE_MII_SET(XE_MII_WRD);
} else {
XE_MII_CLR(XE_MII_WRD);
}
DELAY(1);
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
XE_MII_SET(XE_MII_CLK);
}
}
/*
* Read an PHY register through the MII.
*/
static int
xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame) {
int i, ack, s;
s = splimp();
/*
* Set up frame for RX.
*/
frame->mii_stdelim = XE_MII_STARTDELIM;
frame->mii_opcode = XE_MII_READOP;
frame->mii_turnaround = 0;
frame->mii_data = 0;
XE_SELECT_PAGE(2);
XE_OUTB(XE_GPR2, 0);
/*
* Turn on data xmit.
*/
XE_MII_SET(XE_MII_DIR);
xe_mii_sync(scp);
/*
* Send command/address info.
*/
xe_mii_send(scp, frame->mii_stdelim, 2);
xe_mii_send(scp, frame->mii_opcode, 2);
xe_mii_send(scp, frame->mii_phyaddr, 5);
xe_mii_send(scp, frame->mii_regaddr, 5);
/* Idle bit */
XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
DELAY(1);
XE_MII_SET(XE_MII_CLK);
DELAY(1);
/* Turn off xmit. */
XE_MII_CLR(XE_MII_DIR);
/* Check for ack */
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
XE_MII_SET(XE_MII_CLK);
DELAY(1);
ack = XE_INB(XE_GPR2) & XE_MII_RDD;
/*
* Now try reading data bits. If the ack failed, we still
* need to clock through 16 cycles to keep the PHY(s) in sync.
*/
if (ack) {
for(i = 0; i < 16; i++) {
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
XE_MII_SET(XE_MII_CLK);
DELAY(1);
}
goto fail;
}
for (i = 0x8000; i; i >>= 1) {
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
if (!ack) {
if (XE_INB(XE_GPR2) & XE_MII_RDD)
frame->mii_data |= i;
DELAY(1);
}
XE_MII_SET(XE_MII_CLK);
DELAY(1);
}
fail:
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
XE_MII_SET(XE_MII_CLK);
DELAY(1);
splx(s);
if (ack)
return(1);
return(0);
}
/*
* Write to a PHY register through the MII.
*/
static int
xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame) {
int s;
s = splimp();
/*
* Set up frame for TX.
*/
frame->mii_stdelim = XE_MII_STARTDELIM;
frame->mii_opcode = XE_MII_WRITEOP;
frame->mii_turnaround = XE_MII_TURNAROUND;
XE_SELECT_PAGE(2);
/*
* Turn on data output.
*/
XE_MII_SET(XE_MII_DIR);
xe_mii_sync(scp);
xe_mii_send(scp, frame->mii_stdelim, 2);
xe_mii_send(scp, frame->mii_opcode, 2);
xe_mii_send(scp, frame->mii_phyaddr, 5);
xe_mii_send(scp, frame->mii_regaddr, 5);
xe_mii_send(scp, frame->mii_turnaround, 2);
xe_mii_send(scp, frame->mii_data, 16);
/* Idle bit. */
XE_MII_SET(XE_MII_CLK);
DELAY(1);
XE_MII_CLR(XE_MII_CLK);
DELAY(1);
/*
* Turn off xmit.
*/
XE_MII_CLR(XE_MII_DIR);
splx(s);
return(0);
}
static u_int16_t
xe_phy_readreg(struct xe_softc *scp, u_int16_t reg) {
struct xe_mii_frame frame;
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = 0;
frame.mii_regaddr = reg;
xe_mii_readreg(scp, &frame);
return(frame.mii_data);
}
static void
xe_phy_writereg(struct xe_softc *scp, u_int16_t reg, u_int16_t data) {
struct xe_mii_frame frame;
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = 0;
frame.mii_regaddr = reg;
frame.mii_data = data;
xe_mii_writereg(scp, &frame);
return;
}
/*
* Initiate an autonegotiation session.
*/
static void
xe_autoneg_xmit(struct xe_softc *scp) {
u_int16_t phy_sts;
xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
DELAY(500);
while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET);
phy_sts = xe_phy_readreg(scp, PHY_BMCR);
phy_sts &= ~PHY_BMCR_AUTONEGENBL;
xe_phy_writereg(scp, PHY_BMCR, phy_sts);
DELAY(1000);
phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
phy_sts &= ~PHY_BMCR_ISOLATE;
xe_phy_writereg(scp, PHY_BMCR, phy_sts);
DELAY(1000);
return;
}
/*
* Invoke autonegotiation on a PHY. Also used with the 3Com internal
* autoneg logic which is mapped onto the MII.
*/
static void
xe_autoneg_mii(struct xe_softc *scp) {
u_int16_t phy_sts = 0, media, advert, ability;
int unit = scp->dev->id_unit;
int i;
/*
* First, see if autoneg is supported. If not, there's
* no point in continuing.
*/
phy_sts = xe_phy_readreg(scp, PHY_BMSR);
if (!(phy_sts & PHY_BMSR_CANAUTONEG)) {
printf("xe%d: autonegotiation not supported\n", unit);
media = xe_phy_readreg(scp, PHY_BMCR);
media &= ~PHY_BMCR_SPEEDSEL;
media &= ~PHY_BMCR_DUPLEX;
xe_phy_writereg(scp, PHY_BMCR, media);
return;
}
xe_autoneg_xmit(scp);
DELAY(5000000);
if (xe_phy_readreg(scp, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) {
printf("xe%d: autoneg complete, ", unit);
phy_sts = xe_phy_readreg(scp, PHY_BMSR);
} else {
printf("xe%d: autoneg not complete, ", unit);
}
media = xe_phy_readreg(scp, PHY_BMCR);
/* Link is good. Report modes and set duplex mode. */
if (xe_phy_readreg(scp, PHY_BMSR) & PHY_BMSR_LINKSTAT) {
printf("link status good ");
advert = xe_phy_readreg(scp, XL_PHY_ANAR);
ability = xe_phy_readreg(scp, XL_PHY_LPAR);
if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) {
printf("(100baseT4)\n");
} else if (advert & PHY_ANAR_100BTXFULL && ability & PHY_ANAR_100BTXFULL) {
printf("(full-duplex, 100Mbps)\n");
} else if (advert & PHY_ANAR_100BTXHALF && ability & PHY_ANAR_100BTXHALF) {
printf("(half-duplex, 100Mbps)\n");
} else if (advert & PHY_ANAR_10BTFULL && ability & PHY_ANAR_10BTFULL) {
printf("(full-duplex, 10Mbps)\n");
} else if (advert & PHY_ANAR_10BTHALF && ability & PHY_ANAR_10BTHALF) {
printf("(half-duplex, 10Mbps)\n");
}
} else {
printf("no carrier (forcing half-duplex, 10Mbps)\n");
xe_phy_writereg(scp, PHY_BMCR, 0x0000);
}
}
static void
xe_mii_new_dump(struct xe_softc *scp) {
int i, unit = scp->dev->id_unit;
for (i = 0; i < 2; i++) {
printf(" %d:%04x", i, xe_phy_readreg(scp, i));
}
for (i = 4; i < 7; i++) {
printf(" %d:%04x", i, xe_phy_readreg(scp, i));
}
printf("\n");
}
#endif
#if 1
/*
* Original MII/PHY code from xirc2_ps driver. Seems like it should work,
* according to the ML6692 and DP83840A specs, but the autonegotiation never
* completes, even on the 10/100 net at work. It's very weird.
*/
static void
xe_mii_clock(struct xe_softc *scp) {
XE_OUTB(XE_GPR2, 0x04); /* MDCK low */
DELAY(1);
XE_OUTB(XE_GPR2, 0x05); /* MDCK high */
DELAY(1);
}
static u_int16_t
xe_mii_getbit(struct xe_softc *scp) {
u_int16_t data;
XE_OUTB(XE_GPR2, 0x04);
DELAY(1);
data = XE_INB(XE_GPR2);
XE_OUTB(XE_GPR2, 0x05);
DELAY(1);
return data & 0x20;
}
static void
xe_mii_putbit(struct xe_softc *scp, u_int16_t data) {
if (data) {
XE_OUTB(XE_GPR2, 0x0e);
DELAY(1);
XE_OUTB(XE_GPR2, 0x0f);
DELAY(1);
}
else {
XE_OUTB(XE_GPR2, 0x0c);
DELAY(1);
XE_OUTB(XE_GPR2, 0x0d);
DELAY(1);
}
}
static void
xe_mii_putbits(struct xe_softc *scp, u_int16_t data, int len) {
u_int16_t mask;
for (mask = 1 << (--len); mask != 0; mask >>= 1)
xe_mii_putbit(scp, data & mask);
}
static u_int16_t
xe_mii_read(struct xe_softc *scp, u_int8_t phy, u_int8_t reg) {
int i;
u_int16_t mask, data = 0;
XE_SELECT_PAGE(2);
for (i = 0; i < 32; i++)
xe_mii_putbit(scp, 1);
xe_mii_putbits(scp, 0x06, 4);
xe_mii_putbits(scp, phy, 5);
xe_mii_putbits(scp, reg, 5);
xe_mii_clock(scp);
xe_mii_getbit(scp);
for (mask = 1 << 15; mask != 0; mask >>= 1)
if (xe_mii_getbit(scp))
data |= mask;
xe_mii_clock(scp);
return data;
}
static void
xe_mii_write(struct xe_softc *scp, u_int8_t phy, u_int8_t reg, u_int16_t data, int len) {
int i;
XE_SELECT_PAGE(2);
for (i = 0; i < 32; i++)
xe_mii_putbit(scp, 1);
xe_mii_putbits(scp, 0x05, 4);
xe_mii_putbits(scp, phy, 5);
xe_mii_putbits(scp, reg, 5);
xe_mii_putbit(scp, 1);
xe_mii_putbit(scp, 0);
xe_mii_putbits(scp, data, len);
xe_mii_clock(scp);
}
static int
xe_mii_init(struct xe_softc *scp) {
u_int16_t control, status, partner;
int unit = scp->dev->id_unit, i;
status = xe_mii_read(scp, 0, 1);
if ((status & 0xff00) != 0x7800) {
#ifdef XE_DEBUG
printf("xe%d: no MII found, %0x\n", unit, status);
#endif
return 0;
}
/*
* XXX - do proper media selection here
*/
if (scp->probe) {
#ifdef XE_DEBUG
printf("xe%d: trying auto-negotiation\n", unit);
#endif
control = 0x1000; /* AutoNeg */
}
else if (scp->port == 4) {
#ifdef XE_DEBUG
printf("xe%d: defaulting to 100Mbps\n", unit);
#endif
control = 0x2000; /* 100Mbps */
}
else {
#ifdef XE_DEBUG
printf("xe%d: defaulting to 10Mbps\n", unit);
#endif
control = 0x0000; /* 10Mbps */
}
xe_mii_write(scp, 0, 0, control, 16);
DELAY(100);
control = xe_mii_read(scp, 0, 0);
if (control & 0x0400) {
#ifdef XE_DEBUG
printf("xe%d: can't take PHY out of isolation mode\n", unit);
#endif
return 0;
}
if (scp->probe) {
/* Wait for negotiation to finish */
#ifdef XE_DEBUG
printf("xe%d: waiting for auto-negotiation to complete...\n", unit);
#endif
for (i = 0; i < 35; i++) {
DELAY(100000);
status = xe_mii_read(scp, 0, 1);
if ((status & 0x0020) && (status &0x0004))
break;
}
if (!(status & 0x0020)) {
#ifdef XE_DEBUG
printf("xe%d: auto-negotiation failed\n", unit);
#endif
control = 0x0000;
xe_mii_write(scp, 0, 0, control, 16);
DELAY(100);
XE_SELECT_PAGE(0);
scp->port = (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 2 : 1;
}
else {
partner = xe_mii_read(scp, 0, 5);
#ifdef XE_DEBUG
printf("xe%d: MII link partner = %04x\n", unit, partner);
#endif
if (partner & 0x0080) {
scp->port = 4;
}
else {
DELAY(100);
XE_SELECT_PAGE(0);
scp->port = (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ? 2 : 1;
}
}
scp->probe = 0;
}
#ifdef XE_DEBUG
printf("xe%d: auto-negotiation result: ", unit);
switch (scp->port) {
case 4: printf("100BaseTX\n"); break;
case 2: printf("10BaseT\n"); break;
case 1: printf("10Base2\n"); break;
default: printf("unknown\n");
}
#endif
return 1;
}
#ifdef XE_DEBUG
static void
xe_mii_dump(struct xe_softc *scp) {
int i, unit = scp->dev->id_unit;
printf("xe%d: MII register dump\n", unit);
for (i = 0; i < 7; i++) {
printf(" %04x", xe_mii_read(scp, 0, i));
}
printf("\n");
}
static void
xe_reg_dump(struct xe_softc *scp) {
int unit = scp->dev->id_unit;
int page, i;
printf("xe%d: Common registers: ", unit);
for (i = 0; i < 8; i++) {
printf(" %2.2x", XE_INB(i));
}
printf("\n");
for (page = 0; page < 8; page++) {
printf("xe%d: Register page %2.2x: ", unit, page);
XE_SELECT_PAGE(page);
for (i = 8; i < 16; i++) {
printf(" %2.2x", XE_INB(i));
}
printf("\n");
}
for (page = 0x40; page < 0x5f; page++) {
if (page==0x43 || (page>=0x46 && page<=0x4f) || (page>=0x51 && page<=0x5e))
continue;
printf("xe%d: Register page %2.2x: ", unit, page);
XE_SELECT_PAGE(page);
for (i = 8; i < 16; i++) {
printf(" %2.2x", XE_INB(i));
}
printf("\n");
}
}
#endif
#endif
/**************************************************************
* *
* P C M C I A F U N C T I O N S *
* *
**************************************************************/
#define CARD_MAJOR 50
/*
* Horrid stuff for accessing CIS tuples
*/
#define CISTPL_BUFSIZE 512
#define CISTPL_TYPE(tpl) tpl[0]
#define CISTPL_LEN(tpl) tpl[2]
#define CISTPL_DATA(tpl,pos) tpl[4 + ((pos)<<1)]
/*
* Probe and identify the device. Called by the slot manager when the card is
* inserted or the machine wakes up from suspend mode. Assmes that the slot
* structure has been initialised already.
*/
static int
xe_card_init(struct pccard_devinfo *devi)
{
struct xe_softc *scp;
struct isa_device *dev;
struct uio uios;
struct iovec iov;
u_char buf[CISTPL_BUFSIZE];
u_char ver_str[CISTPL_BUFSIZE>>1];
off_t offs;
int unit, success, rc, i;
unit = devi->isahd.id_unit;
scp = sca[unit];
dev = &devi->isahd;
success = 0;
#ifdef XE_DEBUG
printf("xe: Probing for unit %d\n", unit);
#endif
/* Check that unit number is OK */
if (unit > MAXSLOT) {
printf("xe: bad unit (%d)\n", unit);
return (ENODEV);
}
/* Don't attach an active device */
if (scp && !scp->gone) {
printf("xe: unit already attached (%d)\n", unit);
return (EBUSY);
}
/* Allocate per-instance storage */
if (!scp) {
if ((scp = malloc(sizeof(*scp), M_DEVBUF, M_NOWAIT)) == NULL) {
printf("xe%d: failed to allocage driver strorage\n", unit);
return (ENOMEM);
}
bzero(scp, sizeof(*scp));
}
/* Re-attach an existing device */
if (scp->gone) {
scp->gone = 0;
xe_stop(scp);
return 0;
}
/* Grep through CIS looking for relevant tuples */
offs = 0;
do {
u_int16_t vendor;
u_int8_t rev, media, prod;
iov.iov_base = buf;
iov.iov_len = CISTPL_BUFSIZE;
uios.uio_iov = &iov;
uios.uio_iovcnt = 1;
uios.uio_offset = offs;
uios.uio_resid = CISTPL_BUFSIZE;
uios.uio_segflg = UIO_SYSSPACE;
uios.uio_rw = UIO_READ;
uios.uio_procp = 0;
/*
* Read tuples one at a time into buf. Sucks, but it only happens once.
* XXX - If the stuff we need isn't in attribute memory, or (worse yet)
* XXX - attribute memory isn't mapped, we're FUBAR. Maybe need to do an
* XXX - ioctl on the card device and follow links?
*/
if ((rc = cdevsw[CARD_MAJOR]->d_read(makedev(CARD_MAJOR, devi->slt->slotnum), &uios, 0)) == 0) {
switch (CISTPL_TYPE(buf)) {
case 0x15: /* Grab version string (needed to ID some weird CE2's) */
#ifdef XE_DEBUG
printf("xe%d: Got version string (0x15)\n", unit);
#endif
for (i = 0; i < CISTPL_LEN(buf); ver_str[i] = CISTPL_DATA(buf, i++));
ver_str[i] = '\0';
ver_str[CISTPL_BUFSIZE>>1 - 1] = CISTPL_LEN(buf);
success++;
break;
case 0x20: /* Figure out what type of card we have */
#ifdef XE_DEBUG
printf("xe%d: Got card ID (0x20)\n", unit);
#endif
vendor = CISTPL_DATA(buf, 0) + (CISTPL_DATA(buf, 1) << 8);
rev = CISTPL_DATA(buf, 2);
media = CISTPL_DATA(buf, 3);
prod = CISTPL_DATA(buf, 4);
switch (vendor) { /* Get vendor ID */
case 0x0105:
scp->vendor = "Xircom"; break;
case 0x0138:
case 0x0183:
scp->vendor = "Compaq"; break;
case 0x0089:
scp->vendor = "Intel"; break;
default:
scp->vendor = "Unknown";
}
if (!((prod & 0x40) && (media & 0x01))) {
#ifdef XE_DEBUG
printf("xe%d: Not a PCMCIA Ethernet card!\n", unit);
#endif
rc = ENODEV; /* Not a PCMCIA Ethernet device */
}
else {
if (media & 0x10) { /* Ethernet/modem cards */
#ifdef XE_DEBUG
printf("xe%d: Card is Ethernet/modem combo\n", unit);
#endif
scp->modem = 1;
switch (prod & 0x0f) {
case 1:
scp->card_type = "CEM"; break;
case 2:
scp->card_type = "CEM2"; break;
case 3:
scp->card_type = "CEM3"; break;
case 4:
scp->card_type = "CEM33"; break;
case 5:
scp->ce3 = 1;
scp->card_type = "CEM56M"; break;
case 6:
scp->ce3 = 1;
scp->cem56 = 1;
scp->card_type = "CEM56"; break;
default:
rc = ENODEV;
}
}
else { /* Ethernet-only cards */
#ifdef XE_DEBUG
printf("xe%d: Card is Ethernet only\n", unit);
#endif
switch (prod & 0x0f) {
case 1:
scp->card_type = "CE"; break;
case 2:
scp->card_type = "CE2"; break;
case 3:
scp->ce3 = 1;
scp->card_type = "CE3"; break;
default:
rc = ENODEV;
}
}
}
success++;
break;
case 0x22: /* Get MAC address */
#ifdef XE_DEBUG
printf("xe%d: Got MAC address (0x22)\n", unit);
#endif
if ((CISTPL_LEN(buf) == 8) &&
(CISTPL_DATA(buf, 0) == 0x04) &&
(CISTPL_DATA(buf, 1) == ETHER_ADDR_LEN)) {
for (i = 0; i < ETHER_ADDR_LEN; scp->arpcom.ac_enaddr[i] = CISTPL_DATA(buf, i+2), i++);
}
success++;
break;
default:
}
}
/* Skip to next tuple */
offs += ((CISTPL_LEN(buf) + 2) << 1);
} while ((CISTPL_TYPE(buf) != 0xff) && (CISTPL_LEN(buf) != 0xff) && (rc == 0));
/* Die now if something went wrong above */
if ((rc != 0) || (success < 3)) {
free(scp, M_DEVBUF);
return rc;
}
/* Check for certain strange CE2's that look like CE's */
if (strcmp(scp->card_type, "CE") == 0) {
u_char len = ver_str[CISTPL_BUFSIZE>>1 - 1];
#ifdef XE_DEBUG
printf("xe%d: Checking for weird CE2 string\n", unit);
#endif
for (i = 0; i < len - 2; i++)
if (bcmp("CE2", &ver_str[i], 3) == 0)
scp->card_type = "CE2";
}
/* Fill in some private data */
sca[unit] = scp;
scp->dev = &devi->isahd;
scp->crd = devi;
scp->probe = 1; /* Do media auto-detect by default */
/* Attempt to attach the device */
#ifdef XE_DEBUG
printf("xe%d: Attaching...\n", unit);
#endif
if (xe_attach(scp->dev) == 0) {
sca[unit] = 0;
free(scp, M_DEVBUF);
return ENXIO;
}
#if NAPM > 0
/* Establish APM hooks once device attached */
scp->suspend_hook.ah_name = "xe_suspend";
scp->suspend_hook.ah_fun = xe_suspend;
scp->suspend_hook.ah_arg = (void *)unit;
scp->suspend_hook.ah_order = APM_MIN_ORDER;
apm_hook_establish(APM_HOOK_SUSPEND, &scp->suspend_hook);
scp->resume_hook.ah_name = "xe_resume";
scp->resume_hook.ah_fun = xe_resume;
scp->resume_hook.ah_arg = (void *)unit;
scp->resume_hook.ah_order = APM_MIN_ORDER;
apm_hook_establish(APM_HOOK_RESUME, &scp->resume_hook);
#endif /* NAPM > 0 */
/* Success */
return 0;
}
/*
* The device entry is being removed, probably because someone ejected the
* card. The interface should have been brought down manually before calling
* this function; if not you may well lose packets. In any case, I shut down
* the card and the interface, and hope for the best. The 'gone' flag is set,
* so hopefully no-one else will try to access the missing card.
*/
static void
xe_card_unload(struct pccard_devinfo *devi) {
struct xe_softc *scp;
struct ifnet *ifp;
int unit;
unit = devi->isahd.id_unit;
scp = sca[unit];
ifp = &scp->arpcom.ac_if;
if (scp->gone) {
printf("xe%d: already unloaded\n", unit);
return;
}
if_down(ifp);
ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
xe_stop(scp);
scp->gone = 1;
}
/*
* Card interrupt handler: should return true if the interrupt was for us, in
* case we are sharing our IRQ line with other devices (this will probably be
* the case for multifunction cards).
*
* This function is probably more complicated than it needs to be, as it
* attempts to deal with the case where multiple packets get sent between
* interrupts. This is especially annoying when working out the collision
* stats. Not sure whether this case ever really happens or not (maybe on a
* slow/heavily loaded machine?) so it's probably best to leave this like it
* is.
*
* Note that the crappy PIO used to get packets on and off the card means that
* you will spend a lot of time in this routine -- I can get my P150 to spend
* 90% of its time servicing interrupts if I really hammer the network. Could
* fix this, but then you'd start dropping/losing packets. The moral of this
* story? If you want good network performance _and_ some cycles left over to
* get your work done, don't buy a Xircom card. Or convince them to tell me
* how to do memory-mapped I/O :)
*/
static int
xe_card_intr(struct pccard_devinfo *devi) {
struct xe_softc *scp;
struct ifnet *ifp;
int unit, result;
u_int16_t rx_bytes, rxs, txs;
u_int8_t psr, isr, esr, rsr;
unit = devi->isahd.id_unit;
scp = sca[unit];
ifp = &scp->arpcom.ac_if;
rx_bytes = 0; /* Bytes received on this interrupt */
result = 0; /* Set true if the interrupt is for us */
if (scp->gone)
return 0;
if (scp->ce3) {
XE_OUTB(XE_CR, 0); /* Disable interrupts */
}
psr = XE_INB(XE_PSR); /* Stash the current register page */
/*
* Read ISR to see what caused this interrupt. Note that this clears the
* ISR on CE2 type cards.
*/
if ((isr = XE_INB(XE_ISR)) && isr != 0xff) {
result = 1; /* This device did generate an int */
esr = XE_INB(XE_ESR); /* Read the other status registers */
XE_SELECT_PAGE(0x40);
rxs = XE_INB(XE_RXS0);
XE_OUTB(XE_RXS0, ~rxs & 0xff);
txs = XE_INB(XE_TXS0);
txs |= XE_INB(XE_TXS1) << 8;
XE_OUTB(XE_TXS0, 0);
XE_OUTB(XE_TXS1, 0);
XE_SELECT_PAGE(0);
#if XE_DEBUG > 3
printf("xe%d: ISR=%#2.2x ESR=%#2.2x RXS=%#2.2x TXS=%#4.4x\n", unit, isr, esr, rxs, txs);
#endif
/*
* Handle transmit interrupts
*/
if (isr & XE_ISR_TX_PACKET) {
u_int8_t new_ptr, sent;
if ((new_ptr = XE_INB(XE_PTR)) < scp->tx_ptr) /* Update packet count */
sent = (0xff - scp->tx_ptr) + new_ptr; /* PTR rolled over */
else
sent = new_ptr - scp->tx_ptr;
if (sent > 0) { /* Packets sent since last interrupt */
scp->tx_ptr = new_ptr;
scp->tx_queued -= sent;
ifp->if_opackets += sent;
ifp->if_collisions += scp->tx_collisions;
/*
* Collision stats are a PITA. If multiples frames have been sent, we
* distribute any outstanding collision count equally amongst them.
* However, if we're missing interrupts we're quite likely to also
* miss some collisions; thus the total count will be off anyway.
* Likewise, if we miss a frame dropped due to excessive collisions
* any outstanding collisions count will be held against the next
* frame to be successfully sent. Hopefully it averages out in the
* end!
* XXX - This will screw up if tx_collisions/sent > 14. FIX IT!
*/
switch (scp->tx_collisions) {
case 0:
break;
case 1:
scp->mibdata.dot3StatsSingleCollisionFrames++;
scp->mibdata.dot3StatsCollFrequencies[0]++;
break;
default:
if (sent == 1) {
scp->mibdata.dot3StatsMultipleCollisionFrames++;
scp->mibdata.dot3StatsCollFrequencies[scp->tx_collisions-1]++;
}
else { /* Distribute across multiple frames */
scp->mibdata.dot3StatsMultipleCollisionFrames += sent;
scp->mibdata.
dot3StatsCollFrequencies[scp->tx_collisions/sent] += sent - scp->tx_collisions%sent;
scp->mibdata.
dot3StatsCollFrequencies[scp->tx_collisions/sent + 1] += scp->tx_collisions%sent;
}
}
scp->tx_collisions = 0;
}
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
}
if (txs & 0x0002) { /* Excessive collisions (packet dropped) */
ifp->if_collisions += 16;
ifp->if_oerrors++;
scp->tx_collisions = 0;
scp->mibdata.dot3StatsExcessiveCollisions++;
scp->mibdata.dot3StatsMultipleCollisionFrames++;
scp->mibdata.dot3StatsCollFrequencies[15]++;
XE_OUTB(XE_CR, XE_CR_RESTART_TX);
}
if (txs & 0x0040) /* Transmit aborted -- probably collisions */
scp->tx_collisions++;
/*
* Handle receive interrupts
*/
while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PKT_RX) {
if ((rsr = XE_INB(XE_RSR)) & XE_RSR_RX_OK) {
struct ether_header *ehp;
struct mbuf *mbp;
u_int16_t len;
len = XE_INW(XE_RBC);
if (len == 0)
continue;
#if 0
/*
* Limit the amount of time we spend in this loop, dropping packets if
* necessary. The Linux code does this with considerably more
* finesse, adjusting the threshold dynamically.
*/
if ((rx_bytes += len) > 22000) {
ifp->if_iqdrops++;
scp->mibData.dot3StatsMissedFrames++;
XE_OUTW(XE_DOR, 0x8000);
continue;
}
#endif
if (len & 0x01)
len++;
MGETHDR(mbp, M_DONTWAIT, MT_DATA); /* Allocate a header mbuf */
if (mbp != NULL) {
mbp->m_pkthdr.rcvif = ifp;
mbp->m_pkthdr.len = mbp->m_len = len;
/*
* If the mbuf header isn't big enough for the packet, attach an
* mbuf cluster to hold it. The +2 is to allow for the nasty little
* alignment hack below.
*/
if (len + 2 > MHLEN) {
MCLGET(mbp, M_DONTWAIT);
if ((mbp->m_flags & M_EXT) == 0) {
m_freem(mbp);
mbp = NULL;
}
}
}
if (mbp != NULL) {
/*
* The Ethernet header is 14 bytes long; thus the actual packet data
* won't be 32-bit aligned when it's dumped into the mbuf. We
* offset everything by 2 bytes to fix this. Apparently the
* alignment is important for NFS, damn its eyes.
*/
mbp->m_data += 2;
ehp = mtod(mbp, struct ether_header *);
/*
* Now get the packet, including the Ethernet header and trailer (?)
* We use programmed I/O, because we don't know how to do shared
* memory with these cards. So yes, it's real slow, and heavy on
* the interrupts (CPU on my P150 maxed out at ~950KBps incoming).
*/
if (scp->srev == 0) { /* Workaround a bug in old cards */
u_short rhs;
XE_SELECT_PAGE(5);
rhs = XE_INW(XE_RHS);
XE_SELECT_PAGE(0);
rhs += 3; /* Skip control info */
if (rhs >= 0x8000)
rhs = 0;
if (rhs + len > 0x8000) {
int i;
/*
* XXX - this i-- seems very wrong, but it's what the Linux guys
* XXX - do. Need someone with an old CE2 to test this for me.
*/
for (i = 0; i < len; i--, rhs++) {
((char *)ehp)[i] = XE_INB(XE_EDP);
if (rhs = 0x8000) {
rhs = 0;
i--;
}
}
}
else
insw(scp->dev->id_iobase+XE_EDP, ehp, len >> 1);
}
else
insw(scp->dev->id_iobase+XE_EDP, ehp, len >> 1);
#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, mbp);
/*
* Note that the interface cannot be in promiscuous mode if there
* are no BPF listeners. And if we are in promiscuous mode, we
* have to check if this packet is really ours.
*/
if ((ifp->if_flags & IFF_PROMISC) &&
bcmp(ehp->ether_dhost, scp->arpcom.ac_enaddr, sizeof(ehp->ether_dhost)) != 0 &&
(rsr & XE_RSR_PHYS_PKT)) {
m_freem(mbp);
mbp = NULL;
}
}
#endif /* NBPFILTER > 0 */
if (mbp != NULL) {
mbp->m_pkthdr.len = mbp->m_len = len - ETHER_HDR_LEN;
mbp->m_data += ETHER_HDR_LEN; /* Strip off Ethernet header */
ether_input(ifp, ehp, mbp); /* Send the packet on its way */
ifp->if_ipackets++; /* Success! */
XE_OUTW(XE_DOR, 0x8000); /* skip_rx_packet command */
}
}
}
else if (rsr & XE_RSR_LONG_PKT) { /* Packet length >1518 bytes */
scp->mibdata.dot3StatsFrameTooLongs++;
ifp->if_ierrors++;
}
else if (rsr & XE_RSR_CRC_ERR) { /* Bad checksum on packet */
scp->mibdata.dot3StatsFCSErrors++;
ifp->if_ierrors++;
}
else if (rsr & XE_RSR_ALIGN_ERR) { /* Packet alignment error */
scp->mibdata.dot3StatsAlignmentErrors++;
ifp->if_ierrors++;
}
}
if (rxs & 0x10) { /* Receiver overrun */
scp->mibdata.dot3StatsInternalMacReceiveErrors++;
ifp->if_ierrors++;
XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
}
}
XE_SELECT_PAGE(psr); /* Restore saved page */
XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Re-enable interrupts */
/* XXX - force an int here, instead of dropping packets? */
/* XXX - XE_OUTB(XE_CR, XE_CR_ENABLE_INTR|XE_CE_FORCE_INTR); */
return result;
}
#if NAPM > 0
/**************************************************************
* *
* A P M F U N C T I O N S *
* *
**************************************************************/
/*
* This is called when we go into suspend/standby mode
*/
static int
xe_suspend(void *xunit) {
struct xe_softc *scp;
struct ifnet *ifp;
int unit;
unit = (int)xunit;
scp = sca[unit];
ifp = &scp->arpcom.ac_if;
#ifdef XE_DEBUG
printf("xe%d: APM suspend\n", unit);
#endif
if_down(ifp);
return 0;
}
/*
* This is called when we wake up again
*/
static int
xe_resume(void *xunit) {
struct xe_softc *scp;
int unit;
unit = (int)xunit;
scp = sca[unit];
#ifdef XE_DEBUG
printf("xe%d: APM resume\n", unit);
#endif
return 0;
}
#endif /* NAPM > 0 */
#endif /* NCARD > 0 */
#endif /* NXE > 0 */
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