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freebsd/sys/dev/lmc/if_lmc_media.c
Poul-Henning Kamp 599fcb028d Driver for DEC "Tulip" based WAN cards from LanMedia Corporation. 
This driver should support both the SSI (V.35 etc) E1/T1 unchannelized,
DS3 and HSSI cards.  Only tested on the SSI card.

More info at: http://www.lanmedia.com

Thanks to LanMedia for donating two LMC1000P cards.

if_de.c driver modified by:     LanMedia
NetGraphification by:   	Stephen Kiernan <sk-ports@vegamuse.org>
2000-04-26 20:16:56 +00:00

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/*
* Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
* Copyright (c) LAN Media Corporation 1998, 1999.
* Copyright (c) 2000 Stephen Kiernan (sk-ports@vegamuse.org)
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough 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.
*
* $FreeBSD$
* $Id: if_lmc_media.c,v 1.23 1999/03/01 15:12:24 explorer Exp $
*/
/*
* For lack of a better place, put the SSI cable stuff here.
*/
char *lmc_ssi_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_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_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_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_dummy_set_1(lmc_softc_t * const, int);
static void lmc_dummy_set2_1(lmc_softc_t * const, lmc_ctl_t *);
static 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
};
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
};
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
};
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_dummy_set_1, /* 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 */
};
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, 0);
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);
else if (!ctl->clock_source && sc->ictl.clock_source)
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);
}
/*
* 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, 0);
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);
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, 0);
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);
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);
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;
if (ctl == NULL) {
av = &ictl->cardspec.ssi;
ictl->clock_rate = 100000;
av->f = ictl->clock_rate;
av->n = 8;
av->m = 25;
av->v = 0;
av->x = 0;
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.
*/
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);
}
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;
} else {
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
}
lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
}
/*
* These are bits to program the SSI frequency generator
*/
static 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_set_protocol(lmc_softc_t * const sc, lmc_ctl_t *ctl)
{
if (ctl == 0) {
sc->ictl.keepalive_onoff = LMC_CTL_ON;
return;
}
}
/*
* 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);
}
#if 0
/* XXX future to be integtrated with if_lmc.c for alarms */
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);
}
#endif
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);
/* 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 or E1 line impedance */
/* mii16 &= ~LMC_MII16_T1_Z; */
mii16 |= LMC_MII16_T1_Z;
lmc_mii_writereg(sc, 0, 16, mii16);
lmc_t1_write(sc, 0x01, 0x1B); /* CR0 - primary control */
lmc_t1_write(sc, 0x02, 0x42); /* JAT_CR - jitter atten config */
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, 0x41); /* LIU_CR - RX LIU config */
lmc_t1_write(sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */
lmc_t1_write(sc, 0x40, 0x03); /* RCR0 - RX config */
lmc_t1_write(sc, 0x45, 0x00); /* RALM - RX alarm config */
lmc_t1_write(sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */
lmc_t1_write(sc, 0x68, 0x40); /* 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, 0x05); /* CLAD_CR - clock rate adapter confg */
lmc_t1_write(sc, 0x91, 0x05); /* CSEL - clad freq sel */
lmc_t1_write(sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */
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++)
{ lmc_t1_write(sc, 0x0E0+i, 0x0D);
/* SBCn - sys bus per-channel ctl */
}
/* Turn on the transmiter */
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, 0);
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) & 0x00FF; /* Make sure it's 8 bits only */
/*
* 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( link_status & T1F_RAIS )
{ /* turn on blue LED */
lmc_led_on(sc, LMC_DS3_LED1);
}
else
{ /* turn off blue LED */
lmc_led_off(sc, LMC_DS3_LED1);
}
if( (sc->t1_alarm1_status & T1F_RAIS) != (link_status & T1F_RAIS) )
{
if( link_status & T1F_RAIS )
{ /* turn on blue LED */
printf(" link status: RAIS turn ON Blue %x\n", link_status ); /* DEBUG */
lmc_led_on(sc, LMC_DS3_LED1);
}
else
{ /* turn off blue LED */
printf(" link status: RAIS turn OFF Blue %x\n", link_status ); /* DEBUG */
lmc_led_off(sc, LMC_DS3_LED1);
}
}
/*
* T1F_RYEL wiggles quite a bit,
* taking it out until I understand why -baz 6/22/99
*/
if(link_status & T1F_RMYEL)
{
/* turn on yellow LED */
lmc_led_on(sc, LMC_DS3_LED0);
}
else
{
lmc_led_off(sc, LMC_DS3_LED0);
}
/* Yellow alarm indication */
if( (sc->t1_alarm1_status & T1F_RMYEL) !=
(link_status & T1F_RMYEL) )
{
if((link_status & T1F_RMYEL) == 0 )
{
printf(" link status: RYEL turn OFF Yellow %x\n", link_status ); /* DEBUG */
}
else
{
printf(" link status: RYEL turn ON Yellow %x\n", link_status ); /* DEBUG */
}
}
if (link_status & (T1F_RLOF | T1F_RLOS))
{
lmc_led_on(sc, LMC_DS3_LED3);
}
else
{
lmc_led_off(sc, LMC_DS3_LED3);
}
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);
}
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