4ca29e6bc3
as found in the vortex86 SoCs (http://www.vortex86dx.com). Ported from freebsd. Not added to amd64's GENERIC because this CPU is 32bit only. thanks to DM&P Electronics, Inc for providing documentation and sample devices for this work.
254 lines
6.9 KiB
C
254 lines
6.9 KiB
C
/* $NetBSD: rdcphy.c,v 1.1 2011/01/26 18:48:12 bouyer Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.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 unmodified, 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.
|
|
*/
|
|
|
|
/* FreeBSD: src/sys/dev/mii/rdcphy.c,v 1.1 2010/12/30 23:50:25 yongari Exp */
|
|
|
|
/*
|
|
* Driver for the RDC Semiconductor R6040 10/100 PHY.
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: rdcphy.c,v 1.1 2011/01/26 18:48:12 bouyer Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <sys/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include <dev/mii/miidevs.h>
|
|
|
|
#include <dev/mii/rdcphyreg.h>
|
|
|
|
struct rdcphy_softc {
|
|
struct mii_softc sc_mii;
|
|
int sc_mii_link_tick;
|
|
#define RDCPHY_MANNEG_TICK 3
|
|
};
|
|
|
|
static int rdcphymatch(device_t, cfdata_t, void *);
|
|
static void rdcphyattach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(rdcphy, sizeof(struct rdcphy_softc),
|
|
rdcphymatch, rdcphyattach, mii_phy_detach, mii_phy_activate);
|
|
|
|
|
|
static int rdcphy_service(struct mii_softc *, struct mii_data *, int);
|
|
static void rdcphy_status(struct mii_softc *);
|
|
|
|
static const struct mii_phy_funcs rdcphy_funcs = {
|
|
rdcphy_service, rdcphy_status, mii_phy_reset,
|
|
};
|
|
|
|
static const struct mii_phydesc rdcphys[] = {
|
|
{ MII_OUI_RDC, MII_MODEL_RDC_R6040,
|
|
MII_STR_RDC_R6040 },
|
|
{ 0, 0,
|
|
NULL },
|
|
};
|
|
|
|
static int
|
|
rdcphymatch(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct mii_attach_args *ma = aux;
|
|
|
|
if (mii_phy_match(ma, rdcphys) != NULL)
|
|
return (10);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
rdcphyattach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct rdcphy_softc *rsc = device_private(self);
|
|
struct mii_softc *sc = &rsc->sc_mii;
|
|
struct mii_attach_args *ma = aux;
|
|
struct mii_data *mii = ma->mii_data;
|
|
|
|
const struct mii_phydesc *mpd;
|
|
|
|
mpd = mii_phy_match(ma, rdcphys);
|
|
aprint_naive(": Media interface\n");
|
|
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
|
|
|
|
sc->mii_dev = self;
|
|
sc->mii_inst = mii->mii_instance;
|
|
sc->mii_phy = ma->mii_phyno;
|
|
sc->mii_funcs = &rdcphy_funcs;
|
|
sc->mii_pdata = mii;
|
|
sc->mii_flags = ma->mii_flags;
|
|
sc->mii_anegticks = MII_ANEGTICKS;
|
|
|
|
PHY_RESET(sc);
|
|
|
|
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
|
|
if (sc->mii_capabilities & BMSR_EXTSTAT)
|
|
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
|
|
aprint_normal_dev(self, "");
|
|
mii_phy_add_media(sc);
|
|
aprint_normal("\n");
|
|
|
|
if (!pmf_device_register(self, NULL, mii_phy_resume))
|
|
aprint_error_dev(self, "couldn't establish power handler\n");
|
|
|
|
}
|
|
|
|
static int
|
|
rdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
|
|
{
|
|
struct rdcphy_softc *rsc = (struct rdcphy_softc *)sc;
|
|
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
|
|
|
|
switch (cmd) {
|
|
case MII_POLLSTAT:
|
|
break;
|
|
|
|
case MII_MEDIACHG:
|
|
/*
|
|
* If the interface is not up, don't do anything.
|
|
*/
|
|
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
|
|
break;
|
|
|
|
mii_phy_setmedia(sc);
|
|
switch (IFM_SUBTYPE(ife->ifm_media)) {
|
|
case IFM_100_TX:
|
|
case IFM_10_T:
|
|
/*
|
|
* Report fake lost link event to parent
|
|
* driver. This will stop MAC of parent
|
|
* driver and make it possible to reconfigure
|
|
* MAC after completion of link establishment.
|
|
* Note, the parent MAC seems to require
|
|
* restarting MAC when underlying any PHY
|
|
* configuration was changed even if the
|
|
* resolved speed/duplex was not changed at
|
|
* all.
|
|
*/
|
|
mii->mii_media_status = 0;
|
|
mii->mii_media_active = IFM_ETHER | IFM_NONE;
|
|
rsc->sc_mii_link_tick = RDCPHY_MANNEG_TICK;
|
|
/* Immediately report link down. */
|
|
mii_phy_update(sc, MII_MEDIACHG);
|
|
return (0);
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MII_TICK:
|
|
if (mii_phy_tick(sc) == EJUSTRETURN)
|
|
return (0);
|
|
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
|
|
/*
|
|
* It seems the PHY hardware does not correctly
|
|
* report link status changes when manual link
|
|
* configuration is in progress. It is also
|
|
* possible for the PHY to complete establishing
|
|
* a link within one second such that mii(4)
|
|
* did not notice the link change. To workaround
|
|
* the issue, emulate lost link event and wait
|
|
* for 3 seconds when manual link configuration
|
|
* is in progress. 3 seconds would be long
|
|
* enough to absorb transient link flips.
|
|
*/
|
|
if (rsc->sc_mii_link_tick > 0) {
|
|
rsc->sc_mii_link_tick--;
|
|
return (0);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
rdcphy_status(sc);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
rdcphy_status(struct mii_softc *sc)
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
int bmsr, bmcr, physts;
|
|
|
|
mii->mii_media_status = IFM_AVALID;
|
|
mii->mii_media_active = IFM_ETHER;
|
|
|
|
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
|
|
physts = PHY_READ(sc, MII_RDCPHY_STATUS);
|
|
|
|
if ((physts & STATUS_LINK_UP) != 0)
|
|
mii->mii_media_status |= IFM_ACTIVE;
|
|
|
|
bmcr = PHY_READ(sc, MII_BMCR);
|
|
if ((bmcr & BMCR_ISO) != 0) {
|
|
mii->mii_media_active |= IFM_NONE;
|
|
mii->mii_media_status = 0;
|
|
return;
|
|
}
|
|
|
|
if ((bmcr & BMCR_LOOP) != 0)
|
|
mii->mii_media_active |= IFM_LOOP;
|
|
|
|
if ((bmcr & BMCR_AUTOEN) != 0) {
|
|
if ((bmsr & BMSR_ACOMP) == 0) {
|
|
/* Erg, still trying, I guess... */
|
|
mii->mii_media_active |= IFM_NONE;
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (physts & STATUS_SPEED_MASK) {
|
|
case STATUS_SPEED_100:
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
break;
|
|
case STATUS_SPEED_10:
|
|
mii->mii_media_active |= IFM_10_T;
|
|
break;
|
|
default:
|
|
mii->mii_media_active |= IFM_NONE;
|
|
return;
|
|
}
|
|
if ((physts & STATUS_FULL_DUPLEX) != 0)
|
|
mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
|
|
else
|
|
mii->mii_media_active |= IFM_HDX;
|
|
}
|