325 lines
9.2 KiB
C
325 lines
9.2 KiB
C
/*-
|
|
* Copyright (c) 2014,2019 Ruslan Bukin <br@bsdpad.com>
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
|
|
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* 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>
|
|
/*
|
|
* Micrel KSZ8081/KSZ9021/KSZ9031 Gigabit Ethernet Transceiver
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include "miidevs.h"
|
|
|
|
#include "miibus_if.h"
|
|
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
#include <dev/mii/mii_fdt.h>
|
|
|
|
#define MII_KSZPHY_EXTREG 0x0b
|
|
#define KSZPHY_EXTREG_WRITE (1 << 15)
|
|
#define MII_KSZPHY_EXTREG_WRITE 0x0c
|
|
#define MII_KSZPHY_EXTREG_READ 0x0d
|
|
#define MII_KSZPHY_CLK_CONTROL_PAD_SKEW 0x104
|
|
#define MII_KSZPHY_RX_DATA_PAD_SKEW 0x105
|
|
#define MII_KSZPHY_TX_DATA_PAD_SKEW 0x106
|
|
/* KSZ9031 */
|
|
#define MII_KSZ9031_MMD_ACCESS_CTRL 0x0d
|
|
#define MII_KSZ9031_MMD_ACCESS_DATA 0x0e
|
|
#define MII_KSZ9031_MMD_DATA_NOINC (1 << 14)
|
|
#define MII_KSZ9031_CONTROL_PAD_SKEW 0x4
|
|
#define MII_KSZ9031_RX_DATA_PAD_SKEW 0x5
|
|
#define MII_KSZ9031_TX_DATA_PAD_SKEW 0x6
|
|
#define MII_KSZ9031_CLOCK_PAD_SKEW 0x8
|
|
|
|
#define MII_KSZ8081_PHYCTL2 0x1f
|
|
|
|
#define PS_TO_REG(p) ((p) / 200)
|
|
|
|
static int micphy_probe(device_t);
|
|
static int micphy_attach(device_t);
|
|
static void micphy_reset(struct mii_softc *);
|
|
static int micphy_service(struct mii_softc *, struct mii_data *, int);
|
|
|
|
static device_method_t micphy_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, micphy_probe),
|
|
DEVMETHOD(device_attach, micphy_attach),
|
|
DEVMETHOD(device_detach, mii_phy_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t micphy_driver = {
|
|
"micphy",
|
|
micphy_methods,
|
|
sizeof(struct mii_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(micphy, miibus, micphy_driver, 0, 0);
|
|
|
|
static const struct mii_phydesc micphys[] = {
|
|
MII_PHY_DESC(MICREL, KSZ8081),
|
|
MII_PHY_DESC(MICREL, KSZ9021),
|
|
MII_PHY_DESC(MICREL, KSZ9031),
|
|
MII_PHY_END
|
|
};
|
|
|
|
static const struct mii_phy_funcs micphy_funcs = {
|
|
micphy_service,
|
|
ukphy_status,
|
|
micphy_reset
|
|
};
|
|
|
|
static uint32_t
|
|
ksz9031_read(struct mii_softc *sc, uint32_t devaddr, uint32_t reg)
|
|
{
|
|
/* Set up device address and register. */
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_CTRL, devaddr);
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_DATA, reg);
|
|
|
|
/* Select register data for MMD and read the value. */
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_CTRL,
|
|
MII_KSZ9031_MMD_DATA_NOINC | devaddr);
|
|
|
|
return (PHY_READ(sc, MII_KSZ9031_MMD_ACCESS_DATA));
|
|
}
|
|
|
|
static void
|
|
ksz9031_write(struct mii_softc *sc, uint32_t devaddr, uint32_t reg,
|
|
uint32_t val)
|
|
{
|
|
|
|
/* Set up device address and register. */
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_CTRL, devaddr);
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_DATA, reg);
|
|
|
|
/* Select register data for MMD and write the value. */
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_CTRL,
|
|
MII_KSZ9031_MMD_DATA_NOINC | devaddr);
|
|
PHY_WRITE(sc, MII_KSZ9031_MMD_ACCESS_DATA, val);
|
|
}
|
|
|
|
static uint32_t
|
|
ksz9021_read(struct mii_softc *sc, uint32_t reg)
|
|
{
|
|
|
|
PHY_WRITE(sc, MII_KSZPHY_EXTREG, reg);
|
|
|
|
return (PHY_READ(sc, MII_KSZPHY_EXTREG_READ));
|
|
}
|
|
|
|
static void
|
|
ksz9021_write(struct mii_softc *sc, uint32_t reg, uint32_t val)
|
|
{
|
|
|
|
PHY_WRITE(sc, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | reg);
|
|
PHY_WRITE(sc, MII_KSZPHY_EXTREG_WRITE, val);
|
|
}
|
|
|
|
static void
|
|
ksz90x1_load_values(struct mii_softc *sc, phandle_t node,
|
|
uint32_t dev, uint32_t reg, char *field1, uint32_t f1mask, int f1off,
|
|
char *field2, uint32_t f2mask, int f2off, char *field3, uint32_t f3mask,
|
|
int f3off, char *field4, uint32_t f4mask, int f4off)
|
|
{
|
|
pcell_t dts_value[1];
|
|
int len;
|
|
int val;
|
|
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ9031)
|
|
val = ksz9031_read(sc, dev, reg);
|
|
else
|
|
val = ksz9021_read(sc, reg);
|
|
|
|
if ((len = OF_getproplen(node, field1)) > 0) {
|
|
OF_getencprop(node, field1, dts_value, len);
|
|
val &= ~(f1mask << f1off);
|
|
val |= (PS_TO_REG(dts_value[0]) & f1mask) << f1off;
|
|
}
|
|
|
|
if (field2 != NULL && (len = OF_getproplen(node, field2)) > 0) {
|
|
OF_getencprop(node, field2, dts_value, len);
|
|
val &= ~(f2mask << f2off);
|
|
val |= (PS_TO_REG(dts_value[0]) & f2mask) << f2off;
|
|
}
|
|
|
|
if (field3 != NULL && (len = OF_getproplen(node, field3)) > 0) {
|
|
OF_getencprop(node, field3, dts_value, len);
|
|
val &= ~(f3mask << f3off);
|
|
val |= (PS_TO_REG(dts_value[0]) & f3mask) << f3off;
|
|
}
|
|
|
|
if (field4 != NULL && (len = OF_getproplen(node, field4)) > 0) {
|
|
OF_getencprop(node, field4, dts_value, len);
|
|
val &= ~(f4mask << f4off);
|
|
val |= (PS_TO_REG(dts_value[0]) & f4mask) << f4off;
|
|
}
|
|
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ9031)
|
|
ksz9031_write(sc, dev, reg, val);
|
|
else
|
|
ksz9021_write(sc, reg, val);
|
|
}
|
|
|
|
static void
|
|
ksz9031_load_values(struct mii_softc *sc, phandle_t node)
|
|
{
|
|
|
|
ksz90x1_load_values(sc, node, 2, MII_KSZ9031_CONTROL_PAD_SKEW,
|
|
"txen-skew-ps", 0xf, 0, "rxdv-skew-ps", 0xf, 4,
|
|
NULL, 0, 0, NULL, 0, 0);
|
|
ksz90x1_load_values(sc, node, 2, MII_KSZ9031_RX_DATA_PAD_SKEW,
|
|
"rxd0-skew-ps", 0xf, 0, "rxd1-skew-ps", 0xf, 4,
|
|
"rxd2-skew-ps", 0xf, 8, "rxd3-skew-ps", 0xf, 12);
|
|
ksz90x1_load_values(sc, node, 2, MII_KSZ9031_TX_DATA_PAD_SKEW,
|
|
"txd0-skew-ps", 0xf, 0, "txd1-skew-ps", 0xf, 4,
|
|
"txd2-skew-ps", 0xf, 8, "txd3-skew-ps", 0xf, 12);
|
|
ksz90x1_load_values(sc, node, 2, MII_KSZ9031_CLOCK_PAD_SKEW,
|
|
"rxc-skew-ps", 0x1f, 0, "txc-skew-ps", 0x1f, 5,
|
|
NULL, 0, 0, NULL, 0, 0);
|
|
}
|
|
|
|
static void
|
|
ksz9021_load_values(struct mii_softc *sc, phandle_t node)
|
|
{
|
|
|
|
ksz90x1_load_values(sc, node, 0, MII_KSZPHY_CLK_CONTROL_PAD_SKEW,
|
|
"txen-skew-ps", 0xf, 0, "txc-skew-ps", 0xf, 4,
|
|
"rxdv-skew-ps", 0xf, 8, "rxc-skew-ps", 0xf, 12);
|
|
ksz90x1_load_values(sc, node, 0, MII_KSZPHY_RX_DATA_PAD_SKEW,
|
|
"rxd0-skew-ps", 0xf, 0, "rxd1-skew-ps", 0xf, 4,
|
|
"rxd2-skew-ps", 0xf, 8, "rxd3-skew-ps", 0xf, 12);
|
|
ksz90x1_load_values(sc, node, 0, MII_KSZPHY_TX_DATA_PAD_SKEW,
|
|
"txd0-skew-ps", 0xf, 0, "txd1-skew-ps", 0xf, 4,
|
|
"txd2-skew-ps", 0xf, 8, "txd3-skew-ps", 0xf, 12);
|
|
}
|
|
|
|
static int
|
|
micphy_probe(device_t dev)
|
|
{
|
|
|
|
return (mii_phy_dev_probe(dev, micphys, BUS_PROBE_DEFAULT));
|
|
}
|
|
|
|
static int
|
|
micphy_attach(device_t dev)
|
|
{
|
|
mii_fdt_phy_config_t *cfg;
|
|
struct mii_softc *sc;
|
|
phandle_t node;
|
|
device_t miibus;
|
|
device_t parent;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &micphy_funcs, 1);
|
|
mii_phy_setmedia(sc);
|
|
|
|
/* Nothing further to configure for 8081 model. */
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ8081)
|
|
return (0);
|
|
|
|
miibus = device_get_parent(dev);
|
|
parent = device_get_parent(miibus);
|
|
|
|
if ((node = ofw_bus_get_node(parent)) == -1)
|
|
return (ENXIO);
|
|
|
|
cfg = mii_fdt_get_config(dev);
|
|
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ9031)
|
|
ksz9031_load_values(sc, cfg->phynode);
|
|
else
|
|
ksz9021_load_values(sc, cfg->phynode);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
micphy_reset(struct mii_softc *sc)
|
|
{
|
|
int reg;
|
|
|
|
/*
|
|
* The 8081 has no "sticky bits" that survive a soft reset; several bits
|
|
* in the Phy Control Register 2 must be preserved across the reset.
|
|
* These bits are set up by the bootloader; they control how the phy
|
|
* interfaces to the board (such as clock frequency and LED behavior).
|
|
*/
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ8081)
|
|
reg = PHY_READ(sc, MII_KSZ8081_PHYCTL2);
|
|
mii_phy_reset(sc);
|
|
if (sc->mii_mpd_model == MII_MODEL_MICREL_KSZ8081)
|
|
PHY_WRITE(sc, MII_KSZ8081_PHYCTL2, reg);
|
|
}
|
|
|
|
static int
|
|
micphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
|
|
{
|
|
|
|
switch (cmd) {
|
|
case MII_POLLSTAT:
|
|
break;
|
|
|
|
case MII_MEDIACHG:
|
|
mii_phy_setmedia(sc);
|
|
break;
|
|
|
|
case MII_TICK:
|
|
if (mii_phy_tick(sc) == EJUSTRETURN)
|
|
return (0);
|
|
break;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
PHY_STATUS(sc);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return (0);
|
|
}
|