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NetBSD/sys/dev/pci/if_lmc_media.c
tsutsui 60a7e59350 hz -> Hz
2003-02-22 04:57:48 +00:00

1287 lines
35 KiB
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/* $NetBSD: if_lmc_media.c,v 1.15 2003/02/22 04:57:49 tsutsui Exp $ */
/*-
* Copyright (c) 1997-1999 LAN Media Corporation (LMC)
* All rights reserved. www.lanmedia.com
*
* This code is written by Michael Graff <graff@vix.com> for LMC.
* The code is derived from permitted modifications to software created
* by Matt Thomas (matt@3am-software.com).
*
* 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 marketing or advertising materials mentioning features or
* use of this software must display the following acknowledgement:
* This product includes software developed by LAN Media Corporation
* and its contributors.
* 4. Neither the name of LAN Media Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_lmc_media.c,v 1.15 2003/02/22 04:57:49 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */
#if defined(__FreeBSD__)
#include <machine/clock.h>
#elif defined(__bsdi__) || defined(__NetBSD__)
#include <sys/device.h>
#endif
#if defined(__NetBSD__)
#include <dev/pci/pcidevs.h>
#include "rnd.h"
#if NRND > 0
#include <sys/rnd.h>
#endif
#endif
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/netisr.h>
#include "bpfilter.h"
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#if defined(__FreeBSD__)
#include <net/if_sppp.h>
#elif defined(__NetBSD__)
#include <net/if_spppvar.h>
#endif
#if defined(__bsdi__)
#if INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#endif
#include <net/netisr.h>
#include <net/if.h>
#include <net/netisr.h>
#include <net/if_types.h>
#include <net/if_p2p.h>
#include <net/if_c_hdlc.h>
#endif
#if defined(__FreeBSD__)
#include <vm/vm.h>
#include <vm/pmap.h>
#include <pci.h>
#if NPCI > 0
#include <pci/pcivar.h>
#include <pci/dc21040reg.h>
#endif
#endif /* __FreeBSD__ */
#if defined(__bsdi__)
#include <vm/vm.h>
#include <i386/pci/ic/dc21040.h>
#include <i386/isa/isa.h>
#include <i386/isa/icu.h>
#include <i386/isa/dma.h>
#include <i386/isa/isavar.h>
#include <i386/pci/pci.h>
#endif /* __bsdi__ */
#if defined(__NetBSD__)
#include <machine/bus.h>
#if defined(__alpha__)
#include <machine/intr.h>
#endif
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/ic/dc21040reg.h>
#endif /* __NetBSD__ */
/*
* Sigh. Every OS puts these in different places.
*/
#if defined(__NetBSD__)
#include <dev/pci/if_lmc_types.h>
#include <dev/pci/if_lmcioctl.h>
#include <dev/pci/if_lmcvar.h>
#elif defined(__FreeBSD__)
#include "pci/if_lmc_types.h"
#include "pci/if_lmcioctl.h"
#include "pci/if_lmcvar.h"
#else /* BSDI */
#include "i386/pci/if_lmctypes.h"
#include "i386/pci/if_lmcioctl.h"
#include "i386/pci/if_lmcvar.h"
#endif
/*
* For lack of a better place, put the T1 cable stuff here.
*/
char *lmc_t1_cables[] = {
"V.10/RS423", "EIA530A", "reserved", "X.21", "V.35",
"EIA449/EIA530/V.36", "V.28/EIA232", "none", NULL
};
/*
* protocol independent method.
*/
static void lmc_set_protocol(lmc_softc_t * const, lmc_ctl_t *);
/*
* media independent methods to check on media status, link, light LEDs,
* etc.
*/
static void lmc_ds3_init(lmc_softc_t * const);
static void lmc_ds3_default(lmc_softc_t * const);
static void lmc_ds3_set_status(lmc_softc_t * const, lmc_ctl_t *);
static void lmc_ds3_set_100ft(lmc_softc_t * const, int);
static int lmc_ds3_get_link_status(lmc_softc_t * const);
static void lmc_ds3_set_crc_length(lmc_softc_t * const, int);
static void lmc_ds3_set_scram(lmc_softc_t * const, int);
static void lmc_ds3_watchdog(lmc_softc_t * const);
static void lmc_hssi_init(lmc_softc_t * const);
static void lmc_hssi_default(lmc_softc_t * const);
static void lmc_hssi_set_status(lmc_softc_t * const, lmc_ctl_t *);
static void lmc_hssi_set_clock(lmc_softc_t * const, int);
static int lmc_hssi_get_link_status(lmc_softc_t * const);
static void lmc_hssi_set_link_status(lmc_softc_t * const, int);
static void lmc_hssi_set_crc_length(lmc_softc_t * const, int);
static void lmc_hssi_watchdog(lmc_softc_t * const);
static void lmc_ssi_init(lmc_softc_t * const);
static void lmc_ssi_default(lmc_softc_t * const);
static void lmc_ssi_set_status(lmc_softc_t * const, lmc_ctl_t *);
static void lmc_ssi_set_clock(lmc_softc_t * const, int);
static void lmc_ssi_set_speed(lmc_softc_t * const, lmc_ctl_t *);
static int lmc_ssi_get_link_status(lmc_softc_t * const);
static void lmc_ssi_set_link_status(lmc_softc_t * const, int);
static void lmc_ssi_set_crc_length(lmc_softc_t * const, int);
static void lmc_ssi_watchdog(lmc_softc_t * const);
static void lmc_t1_init(lmc_softc_t * const);
static void lmc_t1_default(lmc_softc_t * const);
static void lmc_t1_set_status(lmc_softc_t * const, lmc_ctl_t *);
static int lmc_t1_get_link_status(lmc_softc_t * const);
static void lmc_t1_set_circuit_type(lmc_softc_t * const, int);
static void lmc_t1_set_crc_length(lmc_softc_t * const, int);
static void lmc_t1_set_clock(lmc_softc_t * const, int);
static void lmc_t1_watchdog(lmc_softc_t * const);
static void lmc_dummy_set_1(lmc_softc_t * const, int);
static void lmc_dummy_set2_1(lmc_softc_t * const, lmc_ctl_t *);
static inline void write_av9110_bit(lmc_softc_t *, int);
static void write_av9110(lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t,
u_int32_t, u_int32_t);
lmc_media_t lmc_ds3_media = {
lmc_ds3_init, /* special media init stuff */
lmc_ds3_default, /* reset to default state */
lmc_ds3_set_status, /* reset status to state provided */
lmc_dummy_set_1, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_ds3_set_100ft, /* set cable length */
lmc_ds3_set_scram, /* set scrambler */
lmc_ds3_get_link_status, /* get link status */
lmc_dummy_set_1, /* set link status */
lmc_ds3_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_ds3_watchdog
};
lmc_media_t lmc_hssi_media = {
lmc_hssi_init, /* special media init stuff */
lmc_hssi_default, /* reset to default state */
lmc_hssi_set_status, /* reset status to state provided */
lmc_hssi_set_clock, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_hssi_get_link_status, /* get link status */
lmc_hssi_set_link_status, /* set link status */
lmc_hssi_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_hssi_watchdog
};
lmc_media_t lmc_ssi_media = {
lmc_ssi_init, /* special media init stuff */
lmc_ssi_default, /* reset to default state */
lmc_ssi_set_status, /* reset status to state provided */
lmc_ssi_set_clock, /* set clock source */
lmc_ssi_set_speed, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_ssi_get_link_status, /* get link status */
lmc_ssi_set_link_status, /* set link status */
lmc_ssi_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_ssi_watchdog
};
lmc_media_t lmc_t1_media = {
lmc_t1_init, /* special media init stuff */
lmc_t1_default, /* reset to default state */
lmc_t1_set_status, /* reset status to state provided */
lmc_t1_set_clock, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_t1_get_link_status, /* get link status */
lmc_dummy_set_1, /* set link status */
lmc_t1_set_crc_length, /* set CRC length */
lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
lmc_t1_watchdog
};
static void
lmc_dummy_set_1(lmc_softc_t * const sc, int a)
{
}
static void
lmc_dummy_set2_1(lmc_softc_t * const sc, lmc_ctl_t *a)
{
}
/*
* HSSI methods
*/
static void
lmc_hssi_init(lmc_softc_t * const sc)
{
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
lmc_gpio_mkoutput(sc, LMC_GEP_HSSI_CLOCK);
}
static void
lmc_hssi_default(lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status(sc, LMC_LINK_DOWN);
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_hssi_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
if (ctl == NULL) {
sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
lmc_set_protocol(sc, NULL);
return;
}
/*
* check for change in clock source
*/
if (ctl->clock_source && !sc->ictl.clock_source) {
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
} else if (!ctl->clock_source && sc->ictl.clock_source) {
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
}
lmc_set_protocol(sc, ctl);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_hssi_set_clock(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
printf(LMC_PRINTF_FMT ": clock external\n",
LMC_PRINTF_ARGS);
} else {
sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
printf(LMC_PRINTF_FMT ": clock internal\n",
LMC_PRINTF_ARGS);
}
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_hssi_get_link_status(lmc_softc_t * const sc)
{
u_int16_t link_status;
link_status = lmc_mii_readreg(sc, 0, 16);
if ((link_status & LMC_MII16_HSSI_CA) == LMC_MII16_HSSI_CA)
return 1;
else
return 0;
}
static void
lmc_hssi_set_link_status(lmc_softc_t * const sc, int state)
{
if (state)
sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
else
sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_hssi_set_crc_length(lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32) {
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
} else {
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
static void
lmc_hssi_watchdog (lmc_softc_t * const sc)
{
/* HSSI is blank */
}
static void
lmc_ds3_watchdog (lmc_softc_t * const sc)
{
sc->lmc_miireg16 = lmc_mii_readreg (sc, 0, 16);
if (sc->lmc_miireg16 & 0x0018)
{
#if 1
printf("%s: AIS Received\n", sc->lmc_xname);
#endif
lmc_led_on (sc, LMC_DS3_LED1 | LMC_DS3_LED2);
}
}
/*
* DS3 methods
*/
/*
* Set cable length
*/
static void
lmc_ds3_set_100ft(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT) {
sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
} else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT) {
sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
static void
lmc_ds3_default(lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status(sc, LMC_LINK_DOWN);
sc->lmc_media->set_cable_length(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
sc->lmc_media->set_scrambler(sc, LMC_CTL_OFF);
sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_ds3_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
if (ctl == NULL) {
sc->lmc_media->set_cable_length(sc, sc->ictl.cable_length);
sc->lmc_media->set_scrambler(sc, sc->ictl.scrambler_onoff);
lmc_set_protocol(sc, NULL);
return;
}
/*
* check for change in cable length setting
*/
if (ctl->cable_length && !sc->ictl.cable_length)
lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
else if (!ctl->cable_length && sc->ictl.cable_length)
lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
/*
* Check for change in scrambler setting (requires reset)
*/
if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
lmc_ds3_set_scram(sc, LMC_CTL_ON);
else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
lmc_ds3_set_scram(sc, LMC_CTL_OFF);
lmc_set_protocol(sc, ctl);
}
static void
lmc_ds3_init(lmc_softc_t * const sc)
{
int i;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
/* writes zeros everywhere */
for (i = 0 ; i < 21 ; i++) {
lmc_mii_writereg(sc, 0, 17, i);
lmc_mii_writereg(sc, 0, 18, 0);
}
/* set some essential bits */
lmc_mii_writereg(sc, 0, 17, 1);
lmc_mii_writereg(sc, 0, 18, 0x05); /* ser, xtx */
lmc_mii_writereg(sc, 0, 17, 5);
lmc_mii_writereg(sc, 0, 18, 0x80); /* emode */
lmc_mii_writereg(sc, 0, 17, 14);
lmc_mii_writereg(sc, 0, 18, 0x30); /* rcgen, tcgen */
/* clear counters and latched bits */
for (i = 0 ; i < 21 ; i++) {
lmc_mii_writereg(sc, 0, 17, i);
lmc_mii_readreg(sc, 0, 18);
}
}
/*
* 1 == DS3 payload scrambled, 0 == not scrambled
*/
static void
lmc_ds3_set_scram(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_ON) {
sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
sc->ictl.scrambler_onoff = LMC_CTL_ON;
} else {
sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
sc->ictl.scrambler_onoff = LMC_CTL_OFF;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_ds3_get_link_status(lmc_softc_t * const sc)
{
u_int16_t link_status;
lmc_mii_writereg(sc, 0, 17, 7);
link_status = lmc_mii_readreg(sc, 0, 18);
// printf("lmc_ds3_get_link_status: %x\n", link_status);
if ((link_status & LMC_FRAMER_REG0_DLOS) == 0)
return 1;
else
return 0;
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_ds3_set_crc_length(lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32) {
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
} else {
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* SSI methods
*/
static void
lmc_ssi_init(lmc_softc_t * const sc)
{
u_int16_t mii17;
int cable;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
mii17 = lmc_mii_readreg(sc, 0, 17);
cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT;
sc->ictl.cable_type = cable;
lmc_gpio_mkoutput(sc, LMC_GEP_SSI_TXCLOCK);
}
static void
lmc_ssi_default(lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
/*
* make TXCLOCK always be an output
*/
lmc_gpio_mkoutput(sc, LMC_GEP_SSI_TXCLOCK);
sc->lmc_media->set_link_status(sc, LMC_LINK_DOWN);
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_media->set_speed(sc, NULL);
sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_ssi_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
if (ctl == NULL) {
sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
sc->lmc_media->set_speed(sc, &sc->ictl);
lmc_set_protocol(sc, NULL);
return;
}
/*
* check for change in clock source
*/
if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT &&
sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT) {
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
} else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT &&
sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT) {
sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
}
if (ctl->clock_rate != sc->ictl.clock_rate)
sc->lmc_media->set_speed(sc, ctl);
lmc_set_protocol(sc, ctl);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_ssi_set_clock(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
printf(LMC_PRINTF_FMT ": clock external\n",
LMC_PRINTF_ARGS);
} else {
sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
printf(LMC_PRINTF_FMT ": clock internal\n",
LMC_PRINTF_ARGS);
}
}
static void
lmc_ssi_set_speed(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
lmc_ctl_t *ictl = &sc->ictl;
lmc_av9110_t *av;
/*
* original settings for clock rate of:
* 100 KHz (8,25,0,0,2) were incorrect
* they should have been 80,125,1,3,3
* There are 17 param combinations to produce this freq.
* For 1.5 MHz use 120,100,1,1,2 (226 param. combinations)
*/
if (ctl == NULL) {
av = &ictl->cardspec.ssi;
ictl->clock_rate = 1500000;
av->f = ictl->clock_rate;
av->n = 120;
av->m = 100;
av->v = 1;
av->x = 1;
av->r = 2;
write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
return;
}
av = &ctl->cardspec.ssi;
if (av->f == 0)
return;
ictl->clock_rate = av->f; /* really, this is the rate we are */
ictl->cardspec.ssi = *av;
write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_ssi_get_link_status(lmc_softc_t * const sc)
{
u_int16_t link_status;
/*
* missing CTS? Hmm. If we require CTS on, we may never get the
* link to come up, so omit it in this test.
*
* Also, it seems that with a loopback cable, DCD isn't asserted,
* so just check for things like this:
* DSR _must_ be asserted.
* One of DCD or CTS must be asserted.
*/
#ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE
link_status = LMC_CSR_READ(sc, csr_gp_timer);
link_status = 0x0000ffff - (link_status & 0x0000ffff);
return(link_status);
#else
link_status = lmc_mii_readreg(sc, 0, 16);
if ((link_status & LMC_MII16_SSI_DSR) == 0)
return (0);
if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0)
return (0);
return (1);
#endif
}
static void
lmc_ssi_set_link_status(lmc_softc_t * const sc, int state)
{
if (state) {
sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
printf(LMC_PRINTF_FMT ": asserting DTR and RTS\n",
LMC_PRINTF_ARGS);
} else {
sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
printf(LMC_PRINTF_FMT ": deasserting DTR and RTS\n",
LMC_PRINTF_ARGS);
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_ssi_set_crc_length(lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32) {
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_SSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
} else {
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* These are bits to program the ssi frequency generator
*/
static inline void
write_av9110_bit(lmc_softc_t *sc, int c)
{
/*
* set the data bit as we need it.
*/
sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
if (c & 0x01)
sc->lmc_gpio |= LMC_GEP_SERIAL;
else
sc->lmc_gpio &= ~(LMC_GEP_SERIAL);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
/*
* set the clock to high
*/
sc->lmc_gpio |= LMC_GEP_SERIALCLK;
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
/*
* set the clock to low again.
*/
sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
}
static void
write_av9110(lmc_softc_t *sc, u_int32_t n, u_int32_t m, u_int32_t v,
u_int32_t x, u_int32_t r)
{
int i;
#if 0
printf(LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
LMC_PRINTF_ARGS, sc->ictl.clock_rate,
n, m, v, x, r);
#endif
sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR;
sc->lmc_gpio &= ~(LMC_GEP_SERIAL | LMC_GEP_SERIALCLK);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
/*
* Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
* as outputs.
*/
lmc_gpio_mkoutput(sc, (LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
| LMC_GEP_SSI_GENERATOR));
sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR);
LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
/*
* a shifting we will go...
*/
for (i = 0 ; i < 7 ; i++)
write_av9110_bit(sc, n >> i);
for (i = 0 ; i < 7 ; i++)
write_av9110_bit(sc, m >> i);
for (i = 0 ; i < 1 ; i++)
write_av9110_bit(sc, v >> i);
for (i = 0 ; i < 2 ; i++)
write_av9110_bit(sc, x >> i);
for (i = 0 ; i < 2 ; i++)
write_av9110_bit(sc, r >> i);
for (i = 0 ; i < 5 ; i++)
write_av9110_bit(sc, 0x17 >> i);
/*
* stop driving serial-related signals
*/
lmc_gpio_mkinput(sc,
(LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
| LMC_GEP_SSI_GENERATOR));
}
static void
lmc_ssi_watchdog(lmc_softc_t * const sc)
{
union {
u_int16_t mii17;
struct ssicsr2 {
unsigned short dtr:1, dsr:1, rts:1, cable:3, crc:1,
led0:1, led1:1, led2:1, led3:1, fifo:1, ll:1,
rl:1, tm:1, loop:1;
} ssicsr;
} ssicr_un;
ssicr_un.mii17 = lmc_mii_readreg (sc, 0, 17);
if (ssicr_un.ssicsr.cable == 7) {
lmc_led_off (sc, LMC_MII16_LED2);
}
else {
lmc_led_on (sc, LMC_MII16_LED2);
}
}
/*
* T1 methods
*/
/*
* The framer regs are multiplexed through MII regs 17 & 18
* write the register address to MII reg 17 and the
* data to MII reg 18.
*/
static void
lmc_t1_write(lmc_softc_t * const sc, int a, int d)
{
lmc_mii_writereg(sc, 0, 17, a);
lmc_mii_writereg(sc, 0, 18, d);
}
static int
lmc_t1_read(lmc_softc_t * const sc, int a)
{
lmc_mii_writereg(sc, 0, 17, a);
return lmc_mii_readreg(sc, 0, 18);
}
static void
lmc_t1_init(lmc_softc_t * const sc)
{
u_int16_t mii16;
int i;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200;
mii16 = lmc_mii_readreg(sc, 0, 16);
mii16 &= ~LMC_MII16_T1_XOE;
lmc_mii_writereg (sc, 0, 16, mii16);
sc->lmc_miireg16 = mii16;
/* reset 8370 */
mii16 &= ~LMC_MII16_T1_RST;
lmc_mii_writereg(sc, 0, 16, mii16 | LMC_MII16_T1_RST);
lmc_mii_writereg(sc, 0, 16, mii16);
/* set T1 line impedance */
mii16 |= LMC_MII16_T1_Z;
lmc_mii_writereg(sc, 0, 16, mii16);
/* CR0 - Set framing to ESF + Force CRC - Set T1 */
lmc_t1_write(sc, 0x01, 0x1b);
/* Reset Elastic store to center - 64 bit elastic store */
lmc_t1_write(sc, 0x02, 0x4b);
/* Release Elastic store reset */
lmc_t1_write(sc, 0x02, 0x43);
/* Disable all interrupts except BOP receive */
lmc_t1_write(sc, 0x0C, 0x00);
lmc_t1_write(sc, 0x0D, 0x00);
lmc_t1_write(sc, 0x0E, 0x00);
lmc_t1_write(sc, 0x0F, 0x00);
lmc_t1_write(sc, 0x10, 0x00);
lmc_t1_write(sc, 0x11, 0x00);
lmc_t1_write(sc, 0x12, 0x80);
lmc_t1_write(sc, 0x13, 0x00);
lmc_t1_write(sc, 0x14, 0x00); /* LOOP - loopback config */
lmc_t1_write(sc, 0x15, 0x00); /* DL3_TS - xtrnl datalink timeslot */
lmc_t1_write(sc, 0x18, 0xFF); /* PIO - programmable I/O */
lmc_t1_write(sc, 0x19, 0x30); /* POE - programmable OE */
lmc_t1_write(sc, 0x1A, 0x0F); /* CMUX - clock input mux */
lmc_t1_write(sc, 0x20, 0xC1); /* LIU_CR - RX LIU config */
lmc_t1_write(sc, 0x20, 0x41); /* LIU_CR - RX LIU config */
lmc_t1_write(sc, 0x22, 0xB1); /* RLIU_CR - RX LIU config */
lmc_t1_write(sc, 0x24, 0x21); /* VGA_MAX -20db sesitivity */
lmc_t1_write(sc, 0x2A, 0xA6); /* Force off the pre-equalizer */
/* Equalizer Gain threshholds */
lmc_t1_write(sc, 0x38, 0x24); /* RX_TH0 - RX gain threshold 0 */
lmc_t1_write(sc, 0x39, 0x28); /* RX_TH1 - RX gain threshold 0 */
lmc_t1_write(sc, 0x3A, 0x2C); /* RX_TH2 - RX gain threshold 0 */
lmc_t1_write(sc, 0x3B, 0x30); /* RX_TH3 - RX gain threshold 0 */
lmc_t1_write(sc, 0x3C, 0x34); /* RX_TH4 - RX gain threshold 0 */
/* Reset LIU */
lmc_t1_write(sc, 0x20, 0x81); /* LIU_CR - RX LIU (reset RLIU) */
lmc_t1_write(sc, 0x20, 0x01); /* LIU_CR - RX LIU (clear reset) */
lmc_t1_write(sc, 0x40, 0x03); /* RCR0 - RX config */
lmc_t1_write(sc, 0x41, 0x00); /* Zero test pattern generator */
lmc_t1_write(sc, 0x42, 0x09); /* DN_LEN is 8, UP_LEN is 5 */
lmc_t1_write(sc, 0x43, 0x08); /* Loopback activate */
lmc_t1_write(sc, 0x44, 0x24); /* Loopback deactivate */
lmc_t1_write(sc, 0x45, 0x00); /* RALM - RX alarm config */
lmc_t1_write(sc, 0x46, 0x08); /* LATCH - RX alarm/err/cntr latch */
lmc_t1_write(sc, 0x68, 0x4E); /* TLIU_CR - TX LIU config */
lmc_t1_write(sc, 0x70, 0x0D); /* TCR0 - TX framer config */
lmc_t1_write(sc, 0x71, 0x05); /* TCR1 - TX config */
lmc_t1_write(sc, 0x72, 0x0B); /* TFRM - TX frame format */
lmc_t1_write(sc, 0x73, 0x00); /* TERROR - TX error insert */
lmc_t1_write(sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */
lmc_t1_write(sc, 0x75, 0x00); /* TALM - TX alarm signal config */
lmc_t1_write(sc, 0x76, 0x00); /* TPATT - TX test pattern config */
lmc_t1_write(sc, 0x77, 0x00); /* TLB - TX inband loopback confg */
lmc_t1_write(sc, 0x90, 0x06); /* CLAD_CR - clock rate adapter confg */
lmc_t1_write(sc, 0x91, 0x05); /* CSEL - clad freq sel */
lmc_t1_write(sc, 0x92, 0x00); /* CLAD Phase Det */
lmc_t1_write(sc, 0x93, 0x00); /* No CLAD Test */
/* Activate BOP */
lmc_t1_write(sc, 0xA0, 0xea); /* BOP - Bit oriented protocol xcvr */
lmc_t1_write(sc, 0xA4, 0x40); /* DL1_TS - DL1 time slot enable */
lmc_t1_write(sc, 0xA5, 0x00); /* DL1_BIT - DL1 bit enable */
lmc_t1_write(sc, 0xA6, 0x03); /* DL1_CTL - DL1 control */
lmc_t1_write(sc, 0xA7, 0x00); /* RDL1_FFC - DL1 FIFO Size */
lmc_t1_write(sc, 0xAB, 0x00); /* TDL1_FFC - DL1 Empty Control */
lmc_t1_write(sc, 0xAA, 0x00); /* PRM - no perf report messages */
lmc_t1_write(sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */
lmc_t1_write(sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */
lmc_t1_write(sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */
lmc_t1_write(sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */
for (i = 0; i < 32; i++) {
lmc_t1_write(sc, 0x0E0+i, 0x00); /*SBCn sysbus perchannel ctl */
lmc_t1_write(sc, 0x100+i, 0x00); /* TPCn - TX per-channel ctl */
lmc_t1_write(sc, 0x180+i, 0x00); /* RPCn - RX per-channel ctl */
}
for (i = 1; i < 25; i++) {
/* SBCn - sys bus per-channel ctl */
lmc_t1_write(sc, 0x0E0+i, 0x0D);
}
/* PFM */
lmc_t1_write(sc, 0xA4, 0x40); /* DL1_TS - DL1 time slot enable */
lmc_t1_write(sc, 0xA5, 0x00); /* DL1_BIT - DL1 bit enable */
lmc_t1_write(sc, 0xA6, 0x03); /* DL1_CTL - DL1 control */
lmc_t1_write(sc, 0xA7, 0x00); /* RDL1_FFC - DL1 FIFO Size */
lmc_t1_write(sc, 0xAB, 0x00); /* TDL1_FFC - DL1 Empty Control */
mii16 |= LMC_MII16_T1_XOE;
lmc_mii_writereg (sc, 0, 16, mii16);
sc->lmc_miireg16 = mii16;
}
static void
lmc_t1_default(lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status(sc, LMC_LINK_DOWN);
sc->lmc_media->set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1);
sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_t1_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl){
if (ctl == NULL) {
sc->lmc_media->set_circuit_type(sc, sc->ictl.circuit_type);
lmc_set_protocol(sc, NULL);
return;
}
/*
* check for change in circuit type
*/
if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1
&& sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_E1)
sc->lmc_media->set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_E1);
else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1
&& sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1)
sc->lmc_media->set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1);
lmc_set_protocol(sc, ctl);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_t1_get_link_status(lmc_softc_t * const sc)
{
u_int16_t link_status;
lmc_mii_writereg(sc, 0, 17, T1FRAMER_ALARM1_STATUS);
link_status = lmc_mii_readreg(sc, 0, 18);
/*
* LMC 1200 LED definitions
* led0 yellow = far-end adapter is in Red alarm condition
* led1 blue = received an Alarm Indication signal (upstream failure)
* led2 Green = power to adapter, Gate Array loaded & driver attached
* led3 red = Loss of Signal (LOS) or out of frame (OOF) conditions
* detected on T3 receive signal
*/
/* detect a change in Blue alarm indication signal */
if ((sc->t1_alarm1_status & T1F_RAIS) != (link_status & T1F_RAIS)) {
if (link_status & T1F_RAIS) {
/* turn on blue LED */
/* DEBUG */
printf(" link status: RAIS turn ON Blue %x\n",
link_status);
lmc_led_on(sc, LMC_DS3_LED1);
} else {
/* turn off blue LED */
/* DEBUG */
printf(" link status: RAIS turn OFF Blue %x\n",
link_status);
lmc_led_off(sc, LMC_DS3_LED1);
}
}
/*
* T1F_RYEL wiggles quite a bit,
* taking it out until I understand why -baz 6/22/99
*/
/* Yellow alarm indication */
if ((sc->t1_alarm1_status & T1F_RMYEL) !=
(link_status & T1F_RMYEL)) {
if ((link_status & (T1F_RYEL | T1F_RMYEL)) == 0) {
/* turn off yellow LED */
/* DEBUG */
printf(" link status: RYEL turn OFF Yellow %x\n",
link_status);
lmc_led_off(sc, LMC_DS3_LED0);
} else {
/* turn on yellow LED */
/* DEBUG */
printf(" link status: RYEL turn ON Yellow %x\n",
link_status);
lmc_led_on(sc, LMC_DS3_LED0);
}
}
sc->t1_alarm1_status = link_status;
lmc_mii_writereg(sc, 0, 17, T1FRAMER_ALARM2_STATUS);
sc->t1_alarm2_status = lmc_mii_readreg(sc, 0, 18);
/*
* link status based upon T1 receive loss of frame or
* loss of signal - RED alarm indication
*/
if ((link_status & (T1F_RLOF | T1F_RLOS)) == 0)
return 1;
else
return 0;
}
/*
* 1 == T1 Circuit Type , 0 == E1 Circuit Type
*/
static void
lmc_t1_set_circuit_type(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CIRCUIT_TYPE_T1) {
sc->lmc_miireg16 |= LMC_MII16_T1_Z;
sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1;
} else {
sc->lmc_miireg16 &= ~LMC_MII16_T1_Z;
sc->ictl.scrambler_onoff = LMC_CTL_CIRCUIT_TYPE_E1;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_t1_set_crc_length(lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32) {
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
} else {
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_t1_set_clock(lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
printf (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
}
else {
sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
printf (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
}
}
static void
lmc_t1_watchdog(lmc_softc_t * const sc)
{
int t1stat;
/* read alarm 1 status (receive) */
t1stat = lmc_t1_read (sc, 0x47);
/* blue alarm -- RAIS */
if (t1stat & 0x08) {
#if 0
if (sc->lmc_blue != 1)
printf ("%s: AIS Received\n", sc->lmc_xname);
#endif
lmc_led_on (sc, LMC_DS3_LED1 | LMC_DS3_LED2);
sc->lmc_blue = 1;
} else {
#if 0
if (sc->lmc_blue == 1)
printf ("%s: AIS ok\n", sc->lmc_xname);
#endif
lmc_led_off (sc, LMC_DS3_LED1);
lmc_led_on (sc, LMC_DS3_LED2);
sc->lmc_blue = 0;
}
/* Red alarm -- LOS | LOF */
if (t1stat & 0x04) {
/* Only print the error once */
if (sc->lmc_red != 1)
printf ("%s: Red Alarm\n", sc->lmc_xname);
lmc_led_on (sc, LMC_DS3_LED2 | LMC_DS3_LED3);
sc->lmc_red = 1;
} else {
if (sc->lmc_red == 1)
printf ("%s: Red Alarm ok\n", sc->lmc_xname);
lmc_led_off (sc, LMC_DS3_LED3);
lmc_led_on (sc, LMC_DS3_LED2);
sc->lmc_red = 0;
}
/* check for Receive Multiframe Yellow Alarm
* Ignore Receive Yellow Alarm
*/
if (t1stat & 0x80) {
if (sc->lmc_yel != 1) {
printf ("%s: Receive Yellow Alarm\n", sc->lmc_xname);
}
lmc_led_on (sc, LMC_DS3_LED0 | LMC_DS3_LED2);
sc->lmc_yel = 1;
}
else {
if (sc->lmc_yel == 1)
printf ("%s: Yellow Alarm ok\n", sc->lmc_xname);
lmc_led_off (sc, LMC_DS3_LED0);
lmc_led_on (sc, LMC_DS3_LED2);
sc->lmc_yel = 0;
}
}
static void
lmc_set_protocol(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
if (ctl == 0) {
sc->ictl.keepalive_onoff = LMC_CTL_ON;
return;
}
#if defined(__NetBSD__) || defined(__FreeBSD__)
if (ctl->keepalive_onoff != sc->ictl.keepalive_onoff) {
switch (ctl->keepalive_onoff) {
case LMC_CTL_ON:
printf(LMC_PRINTF_FMT ": enabling keepalive\n",
LMC_PRINTF_ARGS);
sc->ictl.keepalive_onoff = LMC_CTL_ON;
sc->lmc_sppp.pp_flags = PP_CISCO | PP_KEEPALIVE;
break;
case LMC_CTL_OFF:
printf(LMC_PRINTF_FMT ": disabling keepalive\n",
LMC_PRINTF_ARGS);
sc->ictl.keepalive_onoff = LMC_CTL_OFF;
sc->lmc_sppp.pp_flags = PP_CISCO;
}
}
#if NBPFILTER > 0
/* just in case we are going to change encap type */
if ((sc->lmc_sppp.pp_flags & PP_CISCO) != 0)
bpf_change_type(&sc->lmc_if, DLT_HDLC, PPP_HEADER_LEN);
else
bpf_change_type(&sc->lmc_if, DLT_PPP, PPP_HEADER_LEN);
#endif /* NBPFILTER > 0 */
#endif
}
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