273 lines
6.6 KiB
C
273 lines
6.6 KiB
C
/*-
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* Copyright (c) 2017 Ian Lepore <ian@freebsd.org>
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* All rights reserved.
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*
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* Development sponsored by Microsemi, Inc.
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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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/*
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* Microsemi / Vitesse VSC8501 (and similar).
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*/
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/errno.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "miidevs.h"
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#include "miibus_if.h"
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#ifdef FDT
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/mii/mii_fdt.h>
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#endif
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/* Vitesse VSC8501 */
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#define VSC8501_EXTPAGE_REG 0x001f
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#define VSC8501_EXTCTL1_REG 0x0017
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#define VSC8501_EXTCTL1_RGMII_MODE (1u << 12)
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#define VSC8501_RGMII_CTRL_PAGE 0x02
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#define VSC8501_RGMII_CTRL_REG 0x14
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#define VSC8501_RGMII_DELAY_MASK 0x07
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#define VSC8501_RGMII_DELAY_TXSHIFT 0
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#define VSC8501_RGMII_DELAY_RXSHIFT 4
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#define VSC8501_RGMII_RXCLOCK_DISABLE (1u << 11)
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#define VSC8501_RGMII_RXSWAP (1u << 7)
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#define VSC8501_RGMII_TXSWAP (1u << 3)
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#define VSC8501_RGMII_LANESWAP (VSC8501_RGMII_RXSWAP | \
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VSC8501_RGMII_TXSWAP)
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struct vscphy_softc {
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mii_softc_t mii_sc;
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device_t dev;
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mii_contype_t contype;
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int rxdelay;
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int txdelay;
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bool laneswap;
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};
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static void vscphy_reset(struct mii_softc *);
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static int vscphy_service(struct mii_softc *, struct mii_data *, int);
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static const struct mii_phydesc vscphys[] = {
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MII_PHY_DESC(xxVITESSE, VSC8501),
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MII_PHY_END
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};
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static const struct mii_phy_funcs vscphy_funcs = {
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vscphy_service,
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ukphy_status,
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vscphy_reset
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};
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#ifdef FDT
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static void
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vscphy_fdt_get_config(struct vscphy_softc *vsc)
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{
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mii_fdt_phy_config_t *cfg;
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pcell_t val;
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cfg = mii_fdt_get_config(vsc->dev);
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vsc->contype = cfg->con_type;
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vsc->laneswap = (cfg->flags & MIIF_FDT_LANE_SWAP) &&
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!(cfg->flags & MIIF_FDT_NO_LANE_SWAP);
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if (OF_getencprop(cfg->phynode, "rx-delay", &val, sizeof(val)) > 0)
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vsc->rxdelay = val;
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if (OF_getencprop(cfg->phynode, "tx-delay", &val, sizeof(val)) > 0)
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vsc->txdelay = val;
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mii_fdt_free_config(cfg);
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}
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#endif
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static inline int
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vscphy_read(struct vscphy_softc *sc, u_int reg)
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{
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u_int val;
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val = PHY_READ(&sc->mii_sc, reg);
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return (val);
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}
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static inline void
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vscphy_write(struct vscphy_softc *sc, u_int reg, u_int val)
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{
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PHY_WRITE(&sc->mii_sc, reg, val);
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}
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static void
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vsc8501_setup_rgmii(struct vscphy_softc *vsc)
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{
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int reg;
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vscphy_write(vsc, VSC8501_EXTPAGE_REG, VSC8501_RGMII_CTRL_PAGE);
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reg = vscphy_read(vsc, VSC8501_RGMII_CTRL_REG);
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reg &= ~VSC8501_RGMII_RXCLOCK_DISABLE;
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reg &= ~VSC8501_RGMII_LANESWAP;
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reg &= ~(VSC8501_RGMII_DELAY_MASK << VSC8501_RGMII_DELAY_TXSHIFT);
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reg &= ~(VSC8501_RGMII_DELAY_MASK << VSC8501_RGMII_DELAY_RXSHIFT);
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if (vsc->laneswap)
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reg |= VSC8501_RGMII_LANESWAP;
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if (vsc->contype == MII_CONTYPE_RGMII_ID ||
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vsc->contype == MII_CONTYPE_RGMII_TXID) {
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reg |= vsc->txdelay << VSC8501_RGMII_DELAY_TXSHIFT;
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}
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if (vsc->contype == MII_CONTYPE_RGMII_ID ||
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vsc->contype == MII_CONTYPE_RGMII_RXID) {
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reg |= vsc->rxdelay << VSC8501_RGMII_DELAY_RXSHIFT;
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}
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vscphy_write(vsc, VSC8501_RGMII_CTRL_REG, reg);
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vscphy_write(vsc, VSC8501_EXTPAGE_REG, 0);
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}
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static void
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vsc8501_reset(struct vscphy_softc *vsc)
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{
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int reg;
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/*
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* Must set whether the mac<->phy connection is RGMII first; changes to
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* that bit take effect only after a softreset.
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*/
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reg = vscphy_read(vsc, VSC8501_EXTCTL1_REG);
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if (mii_contype_is_rgmii(vsc->contype))
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reg |= VSC8501_EXTCTL1_RGMII_MODE;
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else
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reg &= ~VSC8501_EXTCTL1_RGMII_MODE;
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vscphy_write(vsc, VSC8501_EXTCTL1_REG, reg);
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mii_phy_reset(&vsc->mii_sc);
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/*
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* Setup rgmii control register if necessary, after softreset.
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*/
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if (mii_contype_is_rgmii(vsc->contype))
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vsc8501_setup_rgmii(vsc);
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}
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static void
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vscphy_reset(struct mii_softc *sc)
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{
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struct vscphy_softc *vsc = (struct vscphy_softc *)sc;
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switch (sc->mii_mpd_model) {
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case MII_MODEL_xxVITESSE_VSC8501:
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vsc8501_reset(vsc);
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break;
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default:
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mii_phy_reset(sc);
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break;
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}
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}
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static int
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vscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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switch (cmd) {
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case MII_POLLSTAT:
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break;
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case MII_MEDIACHG:
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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if (mii_phy_tick(sc) == EJUSTRETURN)
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return (0);
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break;
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}
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/* Update the media status. */
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PHY_STATUS(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return (0);
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}
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static int
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vscphy_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, vscphys, BUS_PROBE_DEFAULT));
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}
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static int
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vscphy_attach(device_t dev)
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{
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struct vscphy_softc *vsc;
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vsc = device_get_softc(dev);
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vsc->dev = dev;
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#ifdef FDT
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vscphy_fdt_get_config(vsc);
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#endif
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mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &vscphy_funcs, 1);
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mii_phy_setmedia(&vsc->mii_sc);
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return (0);
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}
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static device_method_t vscphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, vscphy_probe),
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DEVMETHOD(device_attach, vscphy_attach),
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DEVMETHOD(device_detach, mii_phy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static devclass_t vscphy_devclass;
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static driver_t vscphy_driver = {
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"vscphy",
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vscphy_methods,
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sizeof(struct vscphy_softc)
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};
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DRIVER_MODULE(vscphy, miibus, vscphy_driver, vscphy_devclass, 0, 0);
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