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/*-
* Copyright (c) 2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/utopia/idtphy.c 142384 2005-02-24 16:56:36Z harti $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/unistd.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/proc.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <net/if_atm.h>
#include <dev/utopia/idtphy.h>
#include <dev/utopia/utopia.h>
#include <dev/utopia/utopia_priv.h>
/*
* Reset IDT77105. There is really no way to reset this thing by acessing
* the registers. Load the registers with default values.
*/
static int
idt77105_reset(struct utopia *utp)
{
int err = 0;
u_int n;
uint8_t val[2];
err |= UTP_WRITEREG(utp, IDTPHY_REGO_MCR, 0xff,
IDTPHY_REGM_MCR_DRIC | IDTPHY_REGM_MCR_EI);
n = 1;
err |= UTP_READREGS(utp, IDTPHY_REGO_ISTAT, val, &n);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_DIAG, 0xff, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_LHEC, 0xff, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_CNTS, 0xff, IDTPHY_REGM_CNTS_SEC);
n = 2;
err |= UTP_READREGS(utp, IDTPHY_REGO_CNT, val, &n);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_CNTS, 0xff, IDTPHY_REGM_CNTS_TX);
n = 2;
err |= UTP_READREGS(utp, IDTPHY_REGO_CNT, val, &n);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_CNTS, 0xff, IDTPHY_REGM_CNTS_RX);
n = 2;
err |= UTP_READREGS(utp, IDTPHY_REGO_CNT, val, &n);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_CNTS, 0xff, IDTPHY_REGM_CNTS_HECE);
n = 2;
err |= UTP_READREGS(utp, IDTPHY_REGO_CNT, val, &n);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_MCR, IDTPHY_REGM_MCR_DREC,
IDTPHY_REGM_MCR_DREC);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_DIAG, IDTPHY_REGM_DIAG_RFLUSH,
IDTPHY_REGM_DIAG_RFLUSH);
/* loopback */
err |= utopia_set_loopback(utp, utp->loopback);
/* update carrier state */
err |= utopia_update_carrier(utp);
return (err ? EIO : 0);
}
static int
idt77105_inval(struct utopia *utp, int what __unused)
{
return (EINVAL);
}
static int
idt77105_update_carrier(struct utopia *utp)
{
int err;
uint8_t reg;
u_int n = 1;
if ((err = UTP_READREGS(utp, IDTPHY_REGO_ISTAT, ®, &n)) != 0) {
utp->carrier = UTP_CARR_UNKNOWN;
return (err);
}
utopia_check_carrier(utp, reg & IDTPHY_REGM_ISTAT_GOOD);
return (0);
}
static int
idt77105_set_loopback(struct utopia *utp, u_int mode)
{
int err;
switch (mode) {
case UTP_LOOP_NONE:
err = UTP_WRITEREG(utp, IDTPHY_REGO_DIAG,
IDTPHY_REGM_DIAG_LOOP, IDTPHY_REGM_DIAG_LOOP_NONE);
break;
case UTP_LOOP_DIAG:
err = UTP_WRITEREG(utp, IDTPHY_REGO_DIAG,
IDTPHY_REGM_DIAG_LOOP, IDTPHY_REGM_DIAG_LOOP_PHY);
break;
case UTP_LOOP_LINE:
err = UTP_WRITEREG(utp, IDTPHY_REGO_DIAG,
IDTPHY_REGM_DIAG_LOOP, IDTPHY_REGM_DIAG_LOOP_LINE);
break;
default:
return (EINVAL);
}
if (err)
return (err);
utp->loopback = mode;
return (0);
}
/*
* Handle interrupt on IDT77105 chip
*/
static void
idt77105_intr(struct utopia *utp)
{
uint8_t reg;
u_int n = 1;
int err;
/* Interrupt status and ack the interrupt */
if ((err = UTP_READREGS(utp, IDTPHY_REGO_ISTAT, ®, &n)) != 0) {
printf("IDT77105 read error %d\n", err);
return;
}
/* check for signal condition */
utopia_check_carrier(utp, reg & IDTPHY_REGM_ISTAT_GOOD);
}
static void
idt77105_update_stats(struct utopia *utp)
{
int err = 0;
uint8_t regs[2];
u_int n;
#ifdef DIAGNOSTIC
#define UDIAG(F,A,B) printf(F, A, B)
#else
#define UDIAG(F,A,B) do { } while (0)
#endif
#define UPD(FIELD, CODE, N, MASK) \
err = UTP_WRITEREG(utp, IDTPHY_REGO_CNTS, 0xff, CODE); \
if (err != 0) { \
UDIAG("%s: cannot write CNTS: %d\n", __func__, err); \
return; \
} \
n = N; \
err = UTP_READREGS(utp, IDTPHY_REGO_CNT, regs, &n); \
if (err != 0) { \
UDIAG("%s: cannot read CNT: %d\n", __func__, err); \
return; \
} \
if (n != N) { \
UDIAG("%s: got only %u registers\n", __func__, n); \
return; \
} \
if (N == 1) \
utp->stats.FIELD += (regs[0] & MASK); \
else \
utp->stats.FIELD += (regs[0] | (regs[1] << 8)) & MASK;
UPD(rx_symerr, IDTPHY_REGM_CNTS_SEC, 1, 0xff);
UPD(tx_cells, IDTPHY_REGM_CNTS_TX, 2, 0xffff);
UPD(rx_cells, IDTPHY_REGM_CNTS_RX, 2, 0xffff);
UPD(rx_uncorr, IDTPHY_REGM_CNTS_HECE, 1, 0x1f);
#undef UDIAG
#undef UPD
}
struct utopia_chip utopia_chip_idt77105 = {
UTP_TYPE_IDT77105,
"IDT77105",
7,
idt77105_reset,
idt77105_inval,
idt77105_inval,
idt77105_inval,
idt77105_update_carrier,
idt77105_set_loopback,
idt77105_intr,
idt77105_update_stats,
};
/*
* Update the carrier status
*/
static int
idt77155_update_carrier(struct utopia *utp)
{
int err;
uint8_t reg;
u_int n = 1;
if ((err = UTP_READREGS(utp, IDTPHY_REGO_RSOS, ®, &n)) != 0) {
utp->carrier = UTP_CARR_UNKNOWN;
return (err);
}
utopia_check_carrier(utp, !(reg & IDTPHY_REGM_RSOS_LOS));
return (0);
}
/*
* Handle interrupt on IDT77155 chip
*/
static void
idt77155_intr(struct utopia *utp)
{
uint8_t reg;
u_int n = 1;
int err;
if ((err = UTP_READREGS(utp, IDTPHY_REGO_RSOS, ®, &n)) != 0) {
printf("IDT77105 read error %d\n", err);
return;
}
utopia_check_carrier(utp, !(reg & IDTPHY_REGM_RSOS_LOS));
}
/*
* set SONET/SDH mode
*/
static int
idt77155_set_sdh(struct utopia *utp, int sdh)
{
int err;
if (sdh)
err = UTP_WRITEREG(utp, IDTPHY_REGO_PTRM,
IDTPHY_REGM_PTRM_SS, IDTPHY_REGM_PTRM_SDH);
else
err = UTP_WRITEREG(utp, IDTPHY_REGO_PTRM,
IDTPHY_REGM_PTRM_SS, IDTPHY_REGM_PTRM_SONET);
if (err != 0)
return (err);
utp->state &= ~UTP_ST_SDH;
if (sdh)
utp->state |= UTP_ST_SDH;
return (0);
}
/*
* set idle/unassigned cells
*/
static int
idt77155_set_unass(struct utopia *utp, int unass)
{
int err;
if (unass)
err = UTP_WRITEREG(utp, IDTPHY_REGO_TCHP, 0xff, 0);
else
err = UTP_WRITEREG(utp, IDTPHY_REGO_TCHP, 0xff, 1);
if (err != 0)
return (err);
utp->state &= ~UTP_ST_UNASS;
if (unass)
utp->state |= UTP_ST_UNASS;
return (0);
}
/*
* enable/disable scrambling
*/
static int
idt77155_set_noscramb(struct utopia *utp, int noscramb)
{
int err;
if (noscramb) {
err = UTP_WRITEREG(utp, IDTPHY_REGO_TCC,
IDTPHY_REGM_TCC_DSCR, IDTPHY_REGM_TCC_DSCR);
if (err)
return (err);
err = UTP_WRITEREG(utp, IDTPHY_REGO_RCC,
IDTPHY_REGM_RCC_DSCR, IDTPHY_REGM_RCC_DSCR);
if (err)
return (err);
utp->state |= UTP_ST_NOSCRAMB;
} else {
err = UTP_WRITEREG(utp, IDTPHY_REGO_TCC,
IDTPHY_REGM_TCC_DSCR, 0);
if (err)
return (err);
err = UTP_WRITEREG(utp, IDTPHY_REGO_RCC,
IDTPHY_REGM_RCC_DSCR, 0);
if (err)
return (err);
utp->state &= ~UTP_ST_NOSCRAMB;
}
return (0);
}
/*
* Set loopback mode for the 77155
*/
static int
idt77155_set_loopback(struct utopia *utp, u_int mode)
{
int err;
uint32_t val;
u_int nmode;
val = 0;
nmode = mode;
if (mode & UTP_LOOP_TIME) {
nmode &= ~UTP_LOOP_TIME;
val |= IDTPHY_REGM_MCTL_TLOOP;
}
if (mode & UTP_LOOP_DIAG) {
nmode &= ~UTP_LOOP_DIAG;
val |= IDTPHY_REGM_MCTL_DLOOP;
}
if (mode & UTP_LOOP_LINE) {
nmode &= ~UTP_LOOP_LINE;
val |= IDTPHY_REGM_MCTL_LLOOP;
}
if (nmode != 0)
return (EINVAL);
err = UTP_WRITEREG(utp, IDTPHY_REGO_MCTL, IDTPHY_REGM_MCTL_TLOOP |
IDTPHY_REGM_MCTL_DLOOP | IDTPHY_REGM_MCTL_LLOOP, val);
if (err)
return (err);
utp->loopback = mode;
return (0);
}
/*
* Set the chip to reflect the current state in utopia.
* Assume, that the chip has been reset.
*/
static int
idt77155_set_chip(struct utopia *utp)
{
int err = 0;
/* set sonet/sdh */
err |= idt77155_set_sdh(utp, utp->state & UTP_ST_SDH);
/* unassigned or idle cells */
err |= idt77155_set_unass(utp, utp->state & UTP_ST_UNASS);
/* loopback */
err |= idt77155_set_loopback(utp, utp->loopback);
/* update carrier state */
err |= idt77155_update_carrier(utp);
/* enable interrupts on LOS */
err |= UTP_WRITEREG(utp, IDTPHY_REGO_INT,
IDTPHY_REGM_INT_RXSOHI, IDTPHY_REGM_INT_RXSOHI);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_RSOC,
IDTPHY_REGM_RSOC_LOSI, IDTPHY_REGM_RSOC_LOSI);
return (err ? EIO : 0);
}
/*
* Reset the chip to reflect the current state of utopia.
*/
static int
idt77155_reset(struct utopia *utp)
{
int err = 0;
if (!(utp->flags & UTP_FL_NORESET)) {
err |= UTP_WRITEREG(utp, IDTPHY_REGO_MRID,
IDTPHY_REGM_MRID_RESET, IDTPHY_REGM_MRID_RESET);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_MRID,
IDTPHY_REGM_MRID_RESET, 0);
}
err |= idt77155_set_chip(utp);
return (err ? EIO : 0);
}
/*
* Update statistics from a IDT77155
* This appears to be the same as for the Suni/Lite and Ultra. IDT however
* makes no assessment about the transfer time. Assume 7us.
*/
static void
idt77155_update_stats(struct utopia *utp)
{
int err;
/* write to the master if we can */
if (!(utp->flags & UTP_FL_NORESET)) {
err = UTP_WRITEREG(utp, IDTPHY_REGO_MRID, 0, 0);
} else {
err = UTP_WRITEREG(utp, IDTPHY_REGO_BIPC, 0, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_B2EC, 0, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_B3EC, 0, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_CEC, 0, 0);
err |= UTP_WRITEREG(utp, IDTPHY_REGO_TXCNT, 0, 0);
}
if (err) {
#ifdef DIAGNOSTIC
printf("%s: register write error %s: %d\n", __func__,
utp->chip->name, err);
#endif
return;
}
DELAY(8);
utp->stats.rx_sbip += utopia_update(utp,
IDTPHY_REGO_BIPC, 2, 0xffff);
utp->stats.rx_lbip += utopia_update(utp,
IDTPHY_REGO_B2EC, 3, 0xfffff);
utp->stats.rx_lfebe += utopia_update(utp,
IDTPHY_REGO_FEBEC, 3, 0xfffff);
utp->stats.rx_pbip += utopia_update(utp,
IDTPHY_REGO_B3EC, 2, 0xffff);
utp->stats.rx_pfebe += utopia_update(utp,
IDTPHY_REGO_PFEBEC, 2, 0xffff);
utp->stats.rx_corr += utopia_update(utp,
IDTPHY_REGO_CEC, 1, 0xff);
utp->stats.rx_uncorr += utopia_update(utp,
IDTPHY_REGO_UEC, 1, 0xff);
utp->stats.rx_cells += utopia_update(utp,
IDTPHY_REGO_RCCNT, 3, 0x7ffff);
utp->stats.tx_cells += utopia_update(utp,
IDTPHY_REGO_TXCNT, 3, 0x7ffff);
}
const struct utopia_chip utopia_chip_idt77155 = {
UTP_TYPE_IDT77155,
"IDT77155",
0x80,
idt77155_reset,
idt77155_set_sdh,
idt77155_set_unass,
idt77155_set_noscramb,
idt77155_update_carrier,
idt77155_set_loopback,
idt77155_intr,
idt77155_update_stats,
};