676 lines
15 KiB
C
676 lines
15 KiB
C
/*-
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* Copyright (c) 2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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* All rights reserved.
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*
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* Author: Hartmut Brandt <harti@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/unistd.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/proc.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/sysctl.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_media.h>
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#include <net/if_atm.h>
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#include <dev/utopia/suni.h>
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#include <dev/utopia/idtphy.h>
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#include <dev/utopia/utopia.h>
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#include <dev/utopia/utopia_priv.h>
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/* known chips */
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extern const struct utopia_chip utopia_chip_idt77155;
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extern const struct utopia_chip utopia_chip_idt77105;
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extern const struct utopia_chip utopia_chip_lite;
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extern const struct utopia_chip utopia_chip_ultra;
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extern const struct utopia_chip utopia_chip_622;
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/*
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* Global list of all registered interfaces
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*/
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static struct mtx utopia_list_mtx;
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static LIST_HEAD(, utopia) utopia_list = LIST_HEAD_INITIALIZER(utopia_list);
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#define UTP_RLOCK_LIST() mtx_lock(&utopia_list_mtx)
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#define UTP_RUNLOCK_LIST() mtx_unlock(&utopia_list_mtx)
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#define UTP_WLOCK_LIST() mtx_lock(&utopia_list_mtx)
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#define UTP_WUNLOCK_LIST() mtx_unlock(&utopia_list_mtx)
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#define UTP_LOCK(UTP) mtx_lock((UTP)->lock)
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#define UTP_UNLOCK(UTP) mtx_unlock((UTP)->lock)
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#define UTP_LOCK_ASSERT(UTP) mtx_assert((UTP)->lock, MA_OWNED)
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static struct proc *utopia_kproc;
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static void utopia_dump(struct utopia *) __unused;
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/*
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* Read a multi-register value.
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*/
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uint32_t
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utopia_update(struct utopia *utp, u_int reg, u_int nreg, uint32_t mask)
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{
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int err;
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u_int n;
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uint8_t regs[4];
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uint32_t val;
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n = nreg;
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if ((err = UTP_READREGS(utp, reg, regs, &n)) != 0) {
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#ifdef DIAGNOSTIC
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printf("%s: register read error %s(%u,%u): %d\n", __func__,
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utp->chip->name, reg, nreg, err);
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#endif
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return (0);
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}
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if (n < nreg) {
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#ifdef DIAGNOSTIC
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printf("%s: got only %u regs %s(%u,%u): %d\n", __func__, n,
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utp->chip->name, reg, nreg, err);
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#endif
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return (0);
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}
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val = 0;
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for (n = nreg; n > 0; n--) {
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val <<= 8;
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val |= regs[n - 1];
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}
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return (val & mask);
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}
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/*
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* Debugging - dump all registers.
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*/
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static void
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utopia_dump(struct utopia *utp)
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{
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uint8_t regs[256];
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u_int n = 256, i;
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int err;
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if ((err = UTP_READREGS(utp, 0, regs, &n)) != 0) {
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printf("UTOPIA reg read error %d\n", err);
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return;
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}
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for (i = 0; i < n; i++) {
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if (i % 16 == 0)
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printf("%02x:", i);
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if (i % 16 == 8)
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printf(" ");
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printf(" %02x", regs[i]);
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if (i % 16 == 15)
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printf("\n");
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}
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if (i % 16 != 0)
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printf("\n");
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}
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/*
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* Update the carrier status
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*/
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void
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utopia_check_carrier(struct utopia *utp, u_int carr_ok)
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{
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int old;
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old = utp->carrier;
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if (carr_ok) {
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/* carrier */
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utp->carrier = UTP_CARR_OK;
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if (old != UTP_CARR_OK) {
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if_printf(utp->ifatm->ifp, "carrier detected\n");
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ATMEV_SEND_IFSTATE_CHANGED(utp->ifatm, 1);
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}
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} else {
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/* no carrier */
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utp->carrier = UTP_CARR_LOST;
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if (old == UTP_CARR_OK) {
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if_printf(utp->ifatm->ifp, "carrier lost\n");
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ATMEV_SEND_IFSTATE_CHANGED(utp->ifatm, 0);
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}
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}
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}
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static int
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unknown_inval(struct utopia *utp, int what __unused)
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{
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return (EINVAL);
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}
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static int
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unknown_reset(struct utopia *utp __unused)
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{
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return (EIO);
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}
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static int
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unknown_update_carrier(struct utopia *utp)
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{
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utp->carrier = UTP_CARR_UNKNOWN;
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return (0);
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}
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static int
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unknown_set_loopback(struct utopia *utp __unused, u_int mode __unused)
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{
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return (EINVAL);
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}
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static void
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unknown_intr(struct utopia *utp __unused)
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{
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}
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static void
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unknown_update_stats(struct utopia *utp __unused)
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{
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}
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static const struct utopia_chip utopia_chip_unknown = {
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UTP_TYPE_UNKNOWN,
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"unknown",
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0,
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unknown_reset,
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unknown_inval,
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unknown_inval,
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unknown_inval,
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unknown_update_carrier,
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unknown_set_loopback,
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unknown_intr,
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unknown_update_stats,
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};
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/*
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* Callbacks for the ifmedia infrastructure.
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*/
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static int
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utopia_media_change(struct ifnet *ifp)
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{
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struct ifatm *ifatm = IFP2IFATM(ifp);
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struct utopia *utp = ifatm->phy;
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int error = 0;
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UTP_LOCK(utp);
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if (utp->chip->type != UTP_TYPE_UNKNOWN && utp->state & UTP_ST_ACTIVE) {
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if (utp->media->ifm_media & IFM_ATM_SDH) {
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if (!(utp->state & UTP_ST_SDH))
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error = utopia_set_sdh(utp, 1);
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} else {
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if (utp->state & UTP_ST_SDH)
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error = utopia_set_sdh(utp, 0);
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}
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if (utp->media->ifm_media & IFM_ATM_UNASSIGNED) {
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if (!(utp->state & UTP_ST_UNASS))
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error = utopia_set_unass(utp, 1);
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} else {
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if (utp->state & UTP_ST_UNASS)
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error = utopia_set_unass(utp, 0);
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}
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if (utp->media->ifm_media & IFM_ATM_NOSCRAMB) {
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if (!(utp->state & UTP_ST_NOSCRAMB))
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error = utopia_set_noscramb(utp, 1);
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} else {
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if (utp->state & UTP_ST_NOSCRAMB)
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error = utopia_set_noscramb(utp, 0);
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}
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} else
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error = EIO;
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UTP_UNLOCK(utp);
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return (error);
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}
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/*
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* Look at the carrier status.
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*/
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static void
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utopia_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
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{
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struct utopia *utp = IFP2IFATM(ifp)->phy;
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UTP_LOCK(utp);
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if (utp->chip->type != UTP_TYPE_UNKNOWN && utp->state & UTP_ST_ACTIVE) {
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ifmr->ifm_active = IFM_ATM | utp->ifatm->mib.media;
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switch (utp->carrier) {
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case UTP_CARR_OK:
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ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
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break;
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case UTP_CARR_LOST:
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ifmr->ifm_status = IFM_AVALID;
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break;
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default:
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ifmr->ifm_status = 0;
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break;
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}
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if (utp->state & UTP_ST_SDH) {
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ifmr->ifm_active |= IFM_ATM_SDH;
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ifmr->ifm_current |= IFM_ATM_SDH;
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}
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if (utp->state & UTP_ST_UNASS) {
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ifmr->ifm_active |= IFM_ATM_UNASSIGNED;
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ifmr->ifm_current |= IFM_ATM_UNASSIGNED;
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}
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if (utp->state & UTP_ST_NOSCRAMB) {
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ifmr->ifm_active |= IFM_ATM_NOSCRAMB;
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ifmr->ifm_current |= IFM_ATM_NOSCRAMB;
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}
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} else {
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ifmr->ifm_active = 0;
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ifmr->ifm_status = 0;
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}
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UTP_UNLOCK(utp);
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}
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/*
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* Initialize media from the mib
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*/
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void
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utopia_init_media(struct utopia *utp)
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{
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ifmedia_removeall(utp->media);
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ifmedia_add(utp->media, IFM_ATM | utp->ifatm->mib.media, 0, NULL);
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ifmedia_set(utp->media, IFM_ATM | utp->ifatm->mib.media);
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}
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/*
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* Reset all media
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*/
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void
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utopia_reset_media(struct utopia *utp)
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{
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ifmedia_removeall(utp->media);
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}
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/*
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* This is called by the driver as soon as the SUNI registers are accessible.
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* This may be either in the attach routine or the init routine of the driver.
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*/
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int
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utopia_start(struct utopia *utp)
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{
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uint8_t reg;
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int err;
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u_int n = 1;
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/*
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* Try to find out what chip we have
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*/
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if ((err = UTP_READREGS(utp, SUNI_REGO_MRESET, ®, &n)) != 0)
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return (err);
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switch (reg & SUNI_REGM_MRESET_TYPE) {
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case SUNI_REGM_MRESET_TYPE_622:
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utp->chip = &utopia_chip_622;
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break;
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case SUNI_REGM_MRESET_TYPE_LITE:
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/* this may be either a SUNI LITE or a IDT77155 *
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* Read register 0x70. The SUNI doesn't have it */
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n = 1;
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if ((err = UTP_READREGS(utp, IDTPHY_REGO_RBER, ®, &n)) != 0)
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return (err);
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if ((reg & ~IDTPHY_REGM_RBER_RESV) ==
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(IDTPHY_REGM_RBER_FAIL | IDTPHY_REGM_RBER_WARN))
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utp->chip = &utopia_chip_idt77155;
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else
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utp->chip = &utopia_chip_lite;
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break;
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case SUNI_REGM_MRESET_TYPE_ULTRA:
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utp->chip = &utopia_chip_ultra;
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break;
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default:
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if (reg == (IDTPHY_REGM_MCR_DRIC | IDTPHY_REGM_MCR_EI))
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utp->chip = &utopia_chip_idt77105;
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else {
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if_printf(utp->ifatm->ifp,
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"unknown ATM-PHY chip %#x\n", reg);
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utp->chip = &utopia_chip_unknown;
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}
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break;
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}
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utp->state |= UTP_ST_ACTIVE;
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return (0);
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}
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/*
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* Stop the chip
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*/
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void
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utopia_stop(struct utopia *utp)
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{
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utp->state &= ~UTP_ST_ACTIVE;
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}
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/*
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* Handle the sysctls
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*/
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static int
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utopia_sysctl_regs(SYSCTL_HANDLER_ARGS)
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{
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struct utopia *utp = (struct utopia *)arg1;
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int error;
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u_int n;
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uint8_t *val;
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uint8_t new[3];
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if ((n = utp->chip->nregs) == 0)
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return (EIO);
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val = malloc(sizeof(uint8_t) * n, M_TEMP, M_WAITOK);
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UTP_LOCK(utp);
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error = UTP_READREGS(utp, 0, val, &n);
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UTP_UNLOCK(utp);
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if (error) {
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free(val, M_TEMP);
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return (error);
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}
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error = SYSCTL_OUT(req, val, sizeof(uint8_t) * n);
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free(val, M_TEMP);
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if (error != 0 || req->newptr == NULL)
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return (error);
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error = SYSCTL_IN(req, new, sizeof(new));
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if (error)
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return (error);
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UTP_LOCK(utp);
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error = UTP_WRITEREG(utp, new[0], new[1], new[2]);
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UTP_UNLOCK(utp);
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return (error);
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}
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static int
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utopia_sysctl_stats(SYSCTL_HANDLER_ARGS)
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{
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struct utopia *utp = (struct utopia *)arg1;
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void *val;
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int error;
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val = malloc(sizeof(utp->stats), M_TEMP, M_WAITOK);
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UTP_LOCK(utp);
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bcopy(&utp->stats, val, sizeof(utp->stats));
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if (req->newptr != NULL)
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bzero((char *)&utp->stats + sizeof(utp->stats.version),
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sizeof(utp->stats) - sizeof(utp->stats.version));
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UTP_UNLOCK(utp);
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error = SYSCTL_OUT(req, val, sizeof(utp->stats));
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if (error && req->newptr != NULL)
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bcopy(val, &utp->stats, sizeof(utp->stats));
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free(val, M_TEMP);
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/* ignore actual new value */
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return (error);
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}
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/*
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* Handle the loopback sysctl
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*/
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static int
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utopia_sysctl_loopback(SYSCTL_HANDLER_ARGS)
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{
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struct utopia *utp = (struct utopia *)arg1;
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int error;
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u_int loopback;
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error = SYSCTL_OUT(req, &utp->loopback, sizeof(u_int));
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if (error != 0 || req->newptr == NULL)
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return (error);
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error = SYSCTL_IN(req, &loopback, sizeof(u_int));
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if (error)
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return (error);
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UTP_LOCK(utp);
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error = utopia_set_loopback(utp, loopback);
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UTP_UNLOCK(utp);
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return (error);
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}
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/*
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* Handle the type sysctl
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*/
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static int
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utopia_sysctl_type(SYSCTL_HANDLER_ARGS)
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{
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struct utopia *utp = (struct utopia *)arg1;
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return (SYSCTL_OUT(req, &utp->chip->type, sizeof(utp->chip->type)));
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}
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/*
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* Handle the name sysctl
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*/
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static int
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utopia_sysctl_name(SYSCTL_HANDLER_ARGS)
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{
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struct utopia *utp = (struct utopia *)arg1;
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return (SYSCTL_OUT(req, utp->chip->name, strlen(utp->chip->name) + 1));
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}
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/*
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* Initialize the state. This is called from the drivers attach
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* function. The mutex must be already initialized.
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*/
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int
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utopia_attach(struct utopia *utp, struct ifatm *ifatm, struct ifmedia *media,
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struct mtx *lock, struct sysctl_ctx_list *ctx,
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struct sysctl_oid_list *children, const struct utopia_methods *m)
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{
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bzero(utp, sizeof(*utp));
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utp->ifatm = ifatm;
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utp->methods = m;
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utp->media = media;
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utp->lock = lock;
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utp->chip = &utopia_chip_unknown;
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utp->stats.version = 1;
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ifmedia_init(media,
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IFM_ATM_SDH | IFM_ATM_UNASSIGNED | IFM_ATM_NOSCRAMB,
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|
utopia_media_change, utopia_media_status);
|
|
|
|
if (SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "phy_regs",
|
|
CTLFLAG_RW | CTLTYPE_OPAQUE, utp, 0, utopia_sysctl_regs, "S",
|
|
"phy registers") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "phy_loopback",
|
|
CTLFLAG_RW | CTLTYPE_UINT, utp, 0, utopia_sysctl_loopback, "IU",
|
|
"phy loopback mode") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "phy_type",
|
|
CTLFLAG_RD | CTLTYPE_UINT, utp, 0, utopia_sysctl_type, "IU",
|
|
"phy type") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "phy_name",
|
|
CTLFLAG_RD | CTLTYPE_STRING, utp, 0, utopia_sysctl_name, "A",
|
|
"phy name") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "phy_stats",
|
|
CTLFLAG_RW | CTLTYPE_OPAQUE, utp, 0, utopia_sysctl_stats, "S",
|
|
"phy statistics") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "phy_state",
|
|
CTLFLAG_RD, &utp->state, 0, "phy state") == NULL)
|
|
return (-1);
|
|
|
|
if (SYSCTL_ADD_UINT(ctx, children, OID_AUTO, "phy_carrier",
|
|
CTLFLAG_RD, &utp->carrier, 0, "phy carrier") == NULL)
|
|
return (-1);
|
|
|
|
UTP_WLOCK_LIST();
|
|
LIST_INSERT_HEAD(&utopia_list, utp, link);
|
|
UTP_WUNLOCK_LIST();
|
|
|
|
utp->state |= UTP_ST_ATTACHED;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Detach. We set a flag here, wakeup the daemon and let him do it.
|
|
* Here we need the lock for synchronisation with the daemon.
|
|
*/
|
|
void
|
|
utopia_detach(struct utopia *utp)
|
|
{
|
|
|
|
UTP_LOCK_ASSERT(utp);
|
|
if (utp->state & UTP_ST_ATTACHED) {
|
|
utp->state |= UTP_ST_DETACH;
|
|
while (utp->state & UTP_ST_DETACH) {
|
|
wakeup(&utopia_list);
|
|
msleep(utp, utp->lock, PZERO, "utopia_detach", hz);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The carrier state kernel proc for those adapters that do not interrupt.
|
|
*
|
|
* We assume, that utopia_attach can safely add a new utopia while we are going
|
|
* through the list without disturbing us (we lock the list while getting
|
|
* the address of the first element, adding is always done at the head).
|
|
* Removing is entirely handled here.
|
|
*/
|
|
static void
|
|
utopia_daemon(void *arg __unused)
|
|
{
|
|
struct utopia *utp, *next;
|
|
|
|
UTP_RLOCK_LIST();
|
|
while (utopia_kproc != NULL) {
|
|
utp = LIST_FIRST(&utopia_list);
|
|
UTP_RUNLOCK_LIST();
|
|
|
|
while (utp != NULL) {
|
|
mtx_lock(&Giant); /* XXX depend on MPSAFE */
|
|
UTP_LOCK(utp);
|
|
next = LIST_NEXT(utp, link);
|
|
if (utp->state & UTP_ST_DETACH) {
|
|
LIST_REMOVE(utp, link);
|
|
utp->state &= ~UTP_ST_DETACH;
|
|
wakeup_one(utp);
|
|
} else if (utp->state & UTP_ST_ACTIVE) {
|
|
if (utp->flags & UTP_FL_POLL_CARRIER)
|
|
utopia_update_carrier(utp);
|
|
utopia_update_stats(utp);
|
|
}
|
|
UTP_UNLOCK(utp);
|
|
mtx_unlock(&Giant); /* XXX depend on MPSAFE */
|
|
utp = next;
|
|
}
|
|
|
|
UTP_RLOCK_LIST();
|
|
msleep(&utopia_list, &utopia_list_mtx, PZERO, "*idle*", hz);
|
|
}
|
|
wakeup_one(&utopia_list);
|
|
UTP_RUNLOCK_LIST();
|
|
kproc_exit(0);
|
|
}
|
|
|
|
/*
|
|
* Module initialisation
|
|
*/
|
|
static int
|
|
utopia_mod_init(module_t mod, int what, void *arg)
|
|
{
|
|
int err;
|
|
struct proc *kp;
|
|
|
|
switch (what) {
|
|
|
|
case MOD_LOAD:
|
|
mtx_init(&utopia_list_mtx, "utopia list mutex", NULL, MTX_DEF);
|
|
err = kproc_create(utopia_daemon, NULL, &utopia_kproc,
|
|
RFHIGHPID, 0, "utopia");
|
|
if (err != 0) {
|
|
printf("cannot created utopia thread %d\n", err);
|
|
return (err);
|
|
}
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
UTP_WLOCK_LIST();
|
|
if ((kp = utopia_kproc) != NULL) {
|
|
utopia_kproc = NULL;
|
|
wakeup_one(&utopia_list);
|
|
PROC_LOCK(kp);
|
|
UTP_WUNLOCK_LIST();
|
|
msleep(kp, &kp->p_mtx, PWAIT, "utopia_destroy", 0);
|
|
PROC_UNLOCK(kp);
|
|
} else
|
|
UTP_WUNLOCK_LIST();
|
|
mtx_destroy(&utopia_list_mtx);
|
|
break;
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static moduledata_t utopia_mod = {
|
|
"utopia",
|
|
utopia_mod_init,
|
|
0
|
|
};
|
|
|
|
DECLARE_MODULE(utopia, utopia_mod, SI_SUB_INIT_IF, SI_ORDER_ANY);
|
|
MODULE_VERSION(utopia, 1);
|