50aa106108
the license(s) and before the driver comment (the latter only in drivers not having __FBSDID at that location).
398 lines
9.3 KiB
C
398 lines
9.3 KiB
C
/* $NetBSD: mii.c,v 1.12 1999/08/03 19:41:49 drochner Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
|
* NASA Ames Research Center.
|
|
*
|
|
* 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 advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 THE NETBSD FOUNDATION, INC. 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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* MII bus layer, glues MII-capable network interface drivers to sharable
|
|
* PHY drivers. This exports an interface compatible with BSD/OS 3.0's,
|
|
* plus some NetBSD extensions.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
#include <net/route.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
|
|
MODULE_VERSION(miibus, 1);
|
|
|
|
#include "miibus_if.h"
|
|
|
|
static int miibus_readreg(device_t, int, int);
|
|
static int miibus_writereg(device_t, int, int, int);
|
|
static void miibus_statchg(device_t);
|
|
static void miibus_linkchg(device_t);
|
|
static void miibus_mediainit(device_t);
|
|
|
|
static device_method_t miibus_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, miibus_probe),
|
|
DEVMETHOD(device_attach, miibus_attach),
|
|
DEVMETHOD(device_detach, miibus_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
/* bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
|
|
|
|
/* MII interface */
|
|
DEVMETHOD(miibus_readreg, miibus_readreg),
|
|
DEVMETHOD(miibus_writereg, miibus_writereg),
|
|
DEVMETHOD(miibus_statchg, miibus_statchg),
|
|
DEVMETHOD(miibus_linkchg, miibus_linkchg),
|
|
DEVMETHOD(miibus_mediainit, miibus_mediainit),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
devclass_t miibus_devclass;
|
|
|
|
driver_t miibus_driver = {
|
|
"miibus",
|
|
miibus_methods,
|
|
sizeof(struct mii_data)
|
|
};
|
|
|
|
/*
|
|
* Helper function used by network interface drivers, attaches PHYs
|
|
* to the network interface driver parent.
|
|
*/
|
|
|
|
int
|
|
miibus_probe(dev)
|
|
device_t dev;
|
|
{
|
|
struct mii_attach_args ma, *args;
|
|
struct mii_data *mii;
|
|
device_t child = NULL, parent;
|
|
int bmsr, capmask = 0xFFFFFFFF;
|
|
|
|
mii = device_get_softc(dev);
|
|
parent = device_get_parent(dev);
|
|
LIST_INIT(&mii->mii_phys);
|
|
|
|
for (ma.mii_phyno = 0; ma.mii_phyno < MII_NPHY; ma.mii_phyno++) {
|
|
/*
|
|
* Check to see if there is a PHY at this address. Note,
|
|
* many braindead PHYs report 0/0 in their ID registers,
|
|
* so we test for media in the BMSR.
|
|
*/
|
|
bmsr = MIIBUS_READREG(parent, ma.mii_phyno, MII_BMSR);
|
|
if (bmsr == 0 || bmsr == 0xffff ||
|
|
(bmsr & BMSR_MEDIAMASK) == 0) {
|
|
/* Assume no PHY at this address. */
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Extract the IDs. Braindead PHYs will be handled by
|
|
* the `ukphy' driver, as we have no ID information to
|
|
* match on.
|
|
*/
|
|
ma.mii_id1 = MIIBUS_READREG(parent, ma.mii_phyno,
|
|
MII_PHYIDR1);
|
|
ma.mii_id2 = MIIBUS_READREG(parent, ma.mii_phyno,
|
|
MII_PHYIDR2);
|
|
|
|
ma.mii_data = mii;
|
|
ma.mii_capmask = capmask;
|
|
|
|
args = malloc(sizeof(struct mii_attach_args),
|
|
M_DEVBUF, M_NOWAIT);
|
|
bcopy((char *)&ma, (char *)args, sizeof(ma));
|
|
child = device_add_child(dev, NULL, -1);
|
|
device_set_ivars(child, args);
|
|
}
|
|
|
|
if (child == NULL)
|
|
return(ENXIO);
|
|
|
|
device_set_desc(dev, "MII bus");
|
|
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
miibus_attach(dev)
|
|
device_t dev;
|
|
{
|
|
void **v;
|
|
ifm_change_cb_t ifmedia_upd;
|
|
ifm_stat_cb_t ifmedia_sts;
|
|
struct mii_data *mii;
|
|
|
|
mii = device_get_softc(dev);
|
|
/*
|
|
* Note that each NIC's softc must start with an ifnet structure.
|
|
*/
|
|
mii->mii_ifp = device_get_softc(device_get_parent(dev));
|
|
v = device_get_ivars(dev);
|
|
ifmedia_upd = v[0];
|
|
ifmedia_sts = v[1];
|
|
ifmedia_init(&mii->mii_media, IFM_IMASK, ifmedia_upd, ifmedia_sts);
|
|
bus_generic_attach(dev);
|
|
|
|
return(0);
|
|
}
|
|
|
|
int
|
|
miibus_detach(dev)
|
|
device_t dev;
|
|
{
|
|
struct mii_data *mii;
|
|
|
|
bus_generic_detach(dev);
|
|
mii = device_get_softc(dev);
|
|
ifmedia_removeall(&mii->mii_media);
|
|
mii->mii_ifp = NULL;
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
miibus_readreg(dev, phy, reg)
|
|
device_t dev;
|
|
int phy, reg;
|
|
{
|
|
device_t parent;
|
|
|
|
parent = device_get_parent(dev);
|
|
return(MIIBUS_READREG(parent, phy, reg));
|
|
}
|
|
|
|
static int
|
|
miibus_writereg(dev, phy, reg, data)
|
|
device_t dev;
|
|
int phy, reg, data;
|
|
{
|
|
device_t parent;
|
|
|
|
parent = device_get_parent(dev);
|
|
return(MIIBUS_WRITEREG(parent, phy, reg, data));
|
|
}
|
|
|
|
static void
|
|
miibus_statchg(dev)
|
|
device_t dev;
|
|
{
|
|
device_t parent;
|
|
|
|
parent = device_get_parent(dev);
|
|
MIIBUS_STATCHG(parent);
|
|
return;
|
|
}
|
|
|
|
void (*vlan_link_state_p)(struct ifnet *, int); /* XXX: private from if_vlan */
|
|
|
|
static void
|
|
miibus_linkchg(dev)
|
|
device_t dev;
|
|
{
|
|
struct mii_data *mii;
|
|
struct ifnet *ifp;
|
|
device_t parent;
|
|
int link, link_state;
|
|
|
|
parent = device_get_parent(dev);
|
|
MIIBUS_LINKCHG(parent);
|
|
|
|
mii = device_get_softc(dev);
|
|
/*
|
|
* Note that each NIC's softc must start with an ifnet structure.
|
|
*/
|
|
ifp = device_get_softc(parent);
|
|
|
|
if (mii->mii_media_status & IFM_AVALID) {
|
|
if (mii->mii_media_status & IFM_ACTIVE) {
|
|
link = NOTE_LINKUP;
|
|
link_state = LINK_STATE_UP;
|
|
} else {
|
|
link = NOTE_LINKDOWN;
|
|
link_state = LINK_STATE_DOWN;
|
|
}
|
|
} else {
|
|
link = NOTE_LINKINV;
|
|
link_state = LINK_STATE_UNKNOWN;
|
|
}
|
|
|
|
/* Notify that the link state has changed. */
|
|
if (ifp->if_link_state != link_state) {
|
|
ifp->if_link_state = link_state;
|
|
rt_ifmsg(ifp);
|
|
KNOTE(&ifp->if_klist, link);
|
|
if (ifp->if_nvlans != 0)
|
|
(*vlan_link_state_p)(ifp, link);
|
|
}
|
|
}
|
|
|
|
static void
|
|
miibus_mediainit(dev)
|
|
device_t dev;
|
|
{
|
|
struct mii_data *mii;
|
|
struct ifmedia_entry *m;
|
|
int media = 0;
|
|
|
|
/* Poke the parent in case it has any media of its own to add. */
|
|
MIIBUS_MEDIAINIT(device_get_parent(dev));
|
|
|
|
mii = device_get_softc(dev);
|
|
LIST_FOREACH(m, &mii->mii_media.ifm_list, ifm_list) {
|
|
media = m->ifm_media;
|
|
if (media == (IFM_ETHER|IFM_AUTO))
|
|
break;
|
|
}
|
|
|
|
ifmedia_set(&mii->mii_media, media);
|
|
|
|
return;
|
|
}
|
|
|
|
int
|
|
mii_phy_probe(dev, child, ifmedia_upd, ifmedia_sts)
|
|
device_t dev;
|
|
device_t *child;
|
|
ifm_change_cb_t ifmedia_upd;
|
|
ifm_stat_cb_t ifmedia_sts;
|
|
{
|
|
void **v;
|
|
int bmsr, i;
|
|
|
|
v = malloc(sizeof(vm_offset_t) * 2, M_DEVBUF, M_NOWAIT);
|
|
if (v == 0) {
|
|
return (ENOMEM);
|
|
}
|
|
v[0] = ifmedia_upd;
|
|
v[1] = ifmedia_sts;
|
|
*child = device_add_child(dev, "miibus", -1);
|
|
device_set_ivars(*child, v);
|
|
|
|
for (i = 0; i < MII_NPHY; i++) {
|
|
bmsr = MIIBUS_READREG(dev, i, MII_BMSR);
|
|
if (bmsr == 0 || bmsr == 0xffff ||
|
|
(bmsr & BMSR_MEDIAMASK) == 0) {
|
|
/* Assume no PHY at this address. */
|
|
continue;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
if (i == MII_NPHY) {
|
|
device_delete_child(dev, *child);
|
|
*child = NULL;
|
|
return(ENXIO);
|
|
}
|
|
|
|
bus_generic_attach(dev);
|
|
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Media changed; notify all PHYs.
|
|
*/
|
|
int
|
|
mii_mediachg(mii)
|
|
struct mii_data *mii;
|
|
{
|
|
struct mii_softc *child;
|
|
int rv;
|
|
|
|
mii->mii_media_status = 0;
|
|
mii->mii_media_active = IFM_NONE;
|
|
|
|
LIST_FOREACH(child, &mii->mii_phys, mii_list) {
|
|
rv = (*child->mii_service)(child, mii, MII_MEDIACHG);
|
|
if (rv)
|
|
return (rv);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Call the PHY tick routines, used during autonegotiation.
|
|
*/
|
|
void
|
|
mii_tick(mii)
|
|
struct mii_data *mii;
|
|
{
|
|
struct mii_softc *child;
|
|
|
|
LIST_FOREACH(child, &mii->mii_phys, mii_list)
|
|
(void) (*child->mii_service)(child, mii, MII_TICK);
|
|
}
|
|
|
|
/*
|
|
* Get media status from PHYs.
|
|
*/
|
|
void
|
|
mii_pollstat(mii)
|
|
struct mii_data *mii;
|
|
{
|
|
struct mii_softc *child;
|
|
|
|
mii->mii_media_status = 0;
|
|
mii->mii_media_active = IFM_NONE;
|
|
|
|
LIST_FOREACH(child, &mii->mii_phys, mii_list)
|
|
(void) (*child->mii_service)(child, mii, MII_POLLSTAT);
|
|
}
|
|
|
|
/*
|
|
* Inform the PHYs that the interface is down.
|
|
*/
|
|
void
|
|
mii_down(struct mii_data *mii)
|
|
{
|
|
struct mii_softc *child;
|
|
|
|
LIST_FOREACH(child, &mii->mii_phys, mii_list)
|
|
mii_phy_down(child);
|
|
}
|