251 lines
7.3 KiB
C
251 lines
7.3 KiB
C
/* $NetBSD: micphy.c,v 1.4 2016/07/07 06:55:41 msaitoh Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 1999, 2000 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, and by Frank van der Linden.
|
|
*
|
|
* 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 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1997 Manuel Bouyer. 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. 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 ``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.
|
|
*/
|
|
|
|
/*
|
|
* Driver for Micrel KSZ9021RN PHYs
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: micphy.c,v 1.4 2016/07/07 06:55:41 msaitoh Exp $");
|
|
|
|
#include "opt_mii.h"
|
|
|
|
#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 <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include <dev/mii/miidevs.h>
|
|
|
|
static int micphymatch(device_t, cfdata_t, void *);
|
|
static void micphyattach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL3_NEW(micphy, sizeof(struct mii_softc),
|
|
micphymatch, micphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL,
|
|
DVF_DETACH_SHUTDOWN);
|
|
|
|
static int micphy_service(struct mii_softc *, struct mii_data *, int);
|
|
static void micphy_fixup(struct mii_softc *, int, int, device_t);
|
|
|
|
static const struct mii_phy_funcs micphy_funcs = {
|
|
micphy_service, ukphy_status, mii_phy_reset,
|
|
};
|
|
|
|
static const struct mii_phydesc micphys[] = {
|
|
{ MII_OUI_MICREL, MII_MODEL_MICREL_KSZ9021RNI,
|
|
MII_STR_MICREL_KSZ9021RNI },
|
|
|
|
{ 0, 0,
|
|
NULL },
|
|
};
|
|
|
|
static int
|
|
micphymatch(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct mii_attach_args *ma = aux;
|
|
|
|
if (mii_phy_match(ma, micphys) != NULL)
|
|
return 10;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
micphyattach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct mii_softc *sc = device_private(self);
|
|
struct mii_attach_args *ma = aux;
|
|
struct mii_data *mii = ma->mii_data;
|
|
int model = MII_MODEL(ma->mii_id2);
|
|
int rev = MII_REV(ma->mii_id2);
|
|
const struct mii_phydesc *mpd;
|
|
|
|
mpd = mii_phy_match(ma, micphys);
|
|
aprint_naive(": Media interface\n");
|
|
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, rev);
|
|
|
|
sc->mii_dev = self;
|
|
sc->mii_inst = mii->mii_instance;
|
|
sc->mii_phy = ma->mii_phyno;
|
|
sc->mii_funcs = &micphy_funcs;
|
|
sc->mii_pdata = mii;
|
|
sc->mii_flags = ma->mii_flags;
|
|
sc->mii_anegticks = MII_ANEGTICKS;
|
|
|
|
PHY_RESET(sc);
|
|
|
|
micphy_fixup(sc, model, rev, parent);
|
|
|
|
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, "");
|
|
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
|
|
(sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
|
|
aprint_error("no media present");
|
|
else
|
|
mii_phy_add_media(sc);
|
|
aprint_normal("\n");
|
|
}
|
|
|
|
static int
|
|
micphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
|
|
{
|
|
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
|
|
int reg;
|
|
|
|
switch (cmd) {
|
|
case MII_POLLSTAT:
|
|
/*
|
|
* If we're not polling our PHY instance, just return.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
|
|
return 0;
|
|
break;
|
|
|
|
case MII_MEDIACHG:
|
|
/*
|
|
* If the media indicates a different PHY instance,
|
|
* isolate ourselves.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
|
|
reg = PHY_READ(sc, MII_BMCR);
|
|
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If the interface is not up, don't do anything.
|
|
*/
|
|
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
|
|
break;
|
|
|
|
mii_phy_setmedia(sc);
|
|
break;
|
|
|
|
case MII_TICK:
|
|
/*
|
|
* If we're not currently selected, just return.
|
|
*/
|
|
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
|
|
return 0;
|
|
|
|
if (mii_phy_tick(sc) == EJUSTRETURN)
|
|
return 0;
|
|
break;
|
|
|
|
case MII_DOWN:
|
|
mii_phy_down(sc);
|
|
return 0;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
mii_phy_status(sc);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return 0;
|
|
}
|
|
|
|
#define XREG_CONTROL 0x0b
|
|
#define XREG_WRITE 0x0c
|
|
#define XREG_READ 0x0d
|
|
#define XREG_CTL_SEL_READ 0x0000
|
|
#define XREG_CTL_SEL_WRITE 0x8000
|
|
|
|
#define REG_RGMII_CLOCK_AND_CONTROL 0x104
|
|
#define REG_RGMII_RX_DATA 0x105
|
|
|
|
static void micphy_writexreg(struct mii_softc *sc, uint32_t reg, uint32_t wval)
|
|
{
|
|
int rval __debugused;
|
|
|
|
PHY_WRITE(sc, XREG_CONTROL, XREG_CTL_SEL_WRITE | reg);
|
|
PHY_WRITE(sc, XREG_WRITE, wval);
|
|
PHY_WRITE(sc, XREG_CONTROL, XREG_CTL_SEL_READ | reg);
|
|
rval = PHY_READ(sc, XREG_READ);
|
|
KDASSERT(wval == rval);
|
|
}
|
|
|
|
static void
|
|
micphy_fixup(struct mii_softc *sc, int model, int rev, device_t parent)
|
|
{
|
|
switch (model) {
|
|
case MII_MODEL_MICREL_KSZ9021RNI:
|
|
if (!device_is_a(parent, "cpsw"))
|
|
break;
|
|
|
|
aprint_normal_dev(sc->mii_dev, "adjusting RGMII signal timing for cpsw\n");
|
|
|
|
// RGMII RX Data Pad Skew
|
|
micphy_writexreg(sc, REG_RGMII_RX_DATA, 0x0000);
|
|
|
|
// RGMII Clock and Control Pad Skew
|
|
micphy_writexreg(sc, REG_RGMII_CLOCK_AND_CONTROL, 0x9090);
|
|
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|