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sys/dev/etherswitch/mtkswitch/mtkswitch.c

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/*-
* Copyright (c) 2016 Stanislav Galabov.
* Copyright (c) 2011-2012 Stefan Bethke.
* Copyright (c) 2012 Adrian Chadd.
* 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 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/ethernet.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <machine/bus.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mdio/mdio.h>
#include <dev/etherswitch/etherswitch.h>
#include <dev/etherswitch/mtkswitch/mtkswitchvar.h>
#include <dev/ofw/ofw_bus_subr.h>
#include "mdio_if.h"
#include "miibus_if.h"
#include "etherswitch_if.h"
#define DEBUG
#if defined(DEBUG)
static SYSCTL_NODE(_debug, OID_AUTO, mtkswitch, CTLFLAG_RD, 0, "mtkswitch");
#endif
static inline int mtkswitch_portforphy(int phy);
static int mtkswitch_ifmedia_upd(struct ifnet *ifp);
static void mtkswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
static void mtkswitch_tick(void *arg);
static const struct ofw_compat_data compat_data[] = {
{ "ralink,rt3050-esw", MTK_SWITCH_RT3050 },
{ "ralink,rt3352-esw", MTK_SWITCH_RT3352 },
{ "ralink,rt5350-esw", MTK_SWITCH_RT5350 },
{ "mediatek,mt7620-gsw", MTK_SWITCH_MT7620 },
{ "mediatek,mt7621-gsw", MTK_SWITCH_MT7621 },
{ "mediatek,mt7628-esw", MTK_SWITCH_MT7628 },
/* Sentinel */
{ NULL, MTK_SWITCH_NONE }
};
static int
mtkswitch_probe(device_t dev)
{
struct mtkswitch_softc *sc;
mtk_switch_type switch_type;
if (!ofw_bus_status_okay(dev))
return (ENXIO);
switch_type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
if (switch_type == MTK_SWITCH_NONE)
return (ENXIO);
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->sc_switchtype = switch_type;
device_set_desc_copy(dev, "MTK Switch Driver");
return (0);
}
static int
mtkswitch_attach_phys(struct mtkswitch_softc *sc)
{
int phy, err = 0;
char name[IFNAMSIZ];
/* PHYs need an interface, so we generate a dummy one */
snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->sc_dev));
for (phy = 0; phy < sc->numphys; phy++) {
if ((sc->phymap & (1u << phy)) == 0) {
sc->ifp[phy] = NULL;
sc->ifname[phy] = NULL;
sc->miibus[phy] = NULL;
continue;
}
sc->ifp[phy] = if_alloc(IFT_ETHER);
sc->ifp[phy]->if_softc = sc;
sc->ifp[phy]->if_flags |= IFF_UP | IFF_BROADCAST |
IFF_DRV_RUNNING | IFF_SIMPLEX;
sc->ifname[phy] = malloc(strlen(name) + 1, M_DEVBUF, M_WAITOK);
bcopy(name, sc->ifname[phy], strlen(name) + 1);
if_initname(sc->ifp[phy], sc->ifname[phy],
mtkswitch_portforphy(phy));
err = mii_attach(sc->sc_dev, &sc->miibus[phy], sc->ifp[phy],
mtkswitch_ifmedia_upd, mtkswitch_ifmedia_sts,
BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0);
if (err != 0) {
device_printf(sc->sc_dev,
"attaching PHY %d failed\n",
phy);
} else {
DPRINTF(sc->sc_dev, "%s attached to pseudo interface "
"%s\n", device_get_nameunit(sc->miibus[phy]),
sc->ifp[phy]->if_xname);
}
}
return (err);
}
static int
mtkswitch_set_vlan_mode(struct mtkswitch_softc *sc, uint32_t mode)
{
/* Check for invalid modes. */
if ((mode & sc->info.es_vlan_caps) != mode)
return (EINVAL);
sc->vlan_mode = mode;
/* Reset VLANs. */
sc->hal.mtkswitch_vlan_init_hw(sc);
return (0);
}
static int
mtkswitch_attach(device_t dev)
{
struct mtkswitch_softc *sc;
int err = 0;
int port, rid;
sc = device_get_softc(dev);
/* sc->sc_switchtype is already decided in mtkswitch_probe() */
sc->numports = MTKSWITCH_MAX_PORTS;
sc->numphys = MTKSWITCH_MAX_PHYS;
sc->cpuport = MTKSWITCH_CPU_PORT;
sc->sc_dev = dev;
/* Attach switch related functions */
if (sc->sc_switchtype == MTK_SWITCH_NONE) {
device_printf(dev, "Unknown switch type\n");
return (ENXIO);
}
if (sc->sc_switchtype == MTK_SWITCH_MT7620 ||
sc->sc_switchtype == MTK_SWITCH_MT7621)
mtk_attach_switch_mt7620(sc);
else
mtk_attach_switch_rt3050(sc);
/* Allocate resources */
rid = 0;
sc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->sc_res == NULL) {
device_printf(dev, "could not map memory\n");
return (ENXIO);
}
mtx_init(&sc->sc_mtx, "mtkswitch", NULL, MTX_DEF);
/* Reset the switch */
if (sc->hal.mtkswitch_reset(sc)) {
DPRINTF(dev, "%s: mtkswitch_reset: failed\n", __func__);
return (ENXIO);
}
err = sc->hal.mtkswitch_hw_setup(sc);
DPRINTF(dev, "%s: hw_setup: err=%d\n", __func__, err);
if (err != 0)
return (err);
err = sc->hal.mtkswitch_hw_global_setup(sc);
DPRINTF(dev, "%s: hw_global_setup: err=%d\n", __func__, err);
if (err != 0)
return (err);
/* Initialize the switch ports */
for (port = 0; port < sc->numports; port++) {
sc->hal.mtkswitch_port_init(sc, port);
}
/* Attach the PHYs and complete the bus enumeration */
err = mtkswitch_attach_phys(sc);
DPRINTF(dev, "%s: attach_phys: err=%d\n", __func__, err);
if (err != 0)
return (err);
/* Default to ingress filters off. */
err = mtkswitch_set_vlan_mode(sc, ETHERSWITCH_VLAN_DOT1Q);
DPRINTF(dev, "%s: set_vlan_mode: err=%d\n", __func__, err);
if (err != 0)
return (err);
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
err = bus_generic_attach(dev);
DPRINTF(dev, "%s: bus_generic_attach: err=%d\n", __func__, err);
if (err != 0)
return (err);
callout_init_mtx(&sc->callout_tick, &sc->sc_mtx, 0);
MTKSWITCH_LOCK(sc);
mtkswitch_tick(sc);
MTKSWITCH_UNLOCK(sc);
return (0);
}
static int
mtkswitch_detach(device_t dev)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
int phy;
callout_drain(&sc->callout_tick);
for (phy = 0; phy < MTKSWITCH_MAX_PHYS; phy++) {
if (sc->miibus[phy] != NULL)
device_delete_child(dev, sc->miibus[phy]);
if (sc->ifp[phy] != NULL)
if_free(sc->ifp[phy]);
free(sc->ifname[phy], M_DEVBUF);
}
bus_generic_detach(dev);
mtx_destroy(&sc->sc_mtx);
return (0);
}
/* PHY <-> port mapping is currently 1:1 */
static inline int
mtkswitch_portforphy(int phy)
{
return (phy);
}
static inline int
mtkswitch_phyforport(int port)
{
return (port);
}
static inline struct mii_data *
mtkswitch_miiforport(struct mtkswitch_softc *sc, int port)
{
int phy = mtkswitch_phyforport(port);
if (phy < 0 || phy >= MTKSWITCH_MAX_PHYS || sc->miibus[phy] == NULL)
return (NULL);
return (device_get_softc(sc->miibus[phy]));
}
static inline struct ifnet *
mtkswitch_ifpforport(struct mtkswitch_softc *sc, int port)
{
int phy = mtkswitch_phyforport(port);
if (phy < 0 || phy >= MTKSWITCH_MAX_PHYS)
return (NULL);
return (sc->ifp[phy]);
}
/*
* Convert port status to ifmedia.
*/
static void
mtkswitch_update_ifmedia(uint32_t portstatus, u_int *media_status,
u_int *media_active)
{
*media_active = IFM_ETHER;
*media_status = IFM_AVALID;
if ((portstatus & MTKSWITCH_LINK_UP) != 0)
*media_status |= IFM_ACTIVE;
else {
*media_active |= IFM_NONE;
return;
}
switch (portstatus & MTKSWITCH_SPEED_MASK) {
case MTKSWITCH_SPEED_10:
*media_active |= IFM_10_T;
break;
case MTKSWITCH_SPEED_100:
*media_active |= IFM_100_TX;
break;
case MTKSWITCH_SPEED_1000:
*media_active |= IFM_1000_T;
break;
}
if ((portstatus & MTKSWITCH_DUPLEX) != 0)
*media_active |= IFM_FDX;
else
*media_active |= IFM_HDX;
if ((portstatus & MTKSWITCH_TXFLOW) != 0)
*media_active |= IFM_ETH_TXPAUSE;
if ((portstatus & MTKSWITCH_RXFLOW) != 0)
*media_active |= IFM_ETH_RXPAUSE;
}
static void
mtkswitch_miipollstat(struct mtkswitch_softc *sc)
{
struct mii_data *mii;
struct mii_softc *miisc;
uint32_t portstatus;
int i, port_flap = 0;
MTKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
for (i = 0; i < sc->numphys; i++) {
if (sc->miibus[i] == NULL)
continue;
mii = device_get_softc(sc->miibus[i]);
portstatus = sc->hal.mtkswitch_get_port_status(sc,
mtkswitch_portforphy(i));
/* If a port has flapped - mark it so we can flush the ATU */
if (((mii->mii_media_status & IFM_ACTIVE) == 0 &&
(portstatus & MTKSWITCH_LINK_UP) != 0) ||
((mii->mii_media_status & IFM_ACTIVE) != 0 &&
(portstatus & MTKSWITCH_LINK_UP) == 0)) {
port_flap = 1;
}
mtkswitch_update_ifmedia(portstatus, &mii->mii_media_status,
&mii->mii_media_active);
LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
if (IFM_INST(mii->mii_media.ifm_cur->ifm_media) !=
miisc->mii_inst)
continue;
mii_phy_update(miisc, MII_POLLSTAT);
}
}
if (port_flap)
sc->hal.mtkswitch_atu_flush(sc);
}
static void
mtkswitch_tick(void *arg)
{
struct mtkswitch_softc *sc = arg;
mtkswitch_miipollstat(sc);
callout_reset(&sc->callout_tick, hz, mtkswitch_tick, sc);
}
static void
mtkswitch_lock(device_t dev)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
MTKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
MTKSWITCH_LOCK(sc);
}
static void
mtkswitch_unlock(device_t dev)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
MTKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
MTKSWITCH_UNLOCK(sc);
}
static etherswitch_info_t *
mtkswitch_getinfo(device_t dev)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (&sc->info);
}
static inline int
mtkswitch_is_cpuport(struct mtkswitch_softc *sc, int port)
{
return (sc->cpuport == port);
}
static int
mtkswitch_getport(device_t dev, etherswitch_port_t *p)
{
struct mtkswitch_softc *sc;
struct mii_data *mii;
struct ifmediareq *ifmr;
int err;
sc = device_get_softc(dev);
if (p->es_port < 0 || p->es_port > sc->info.es_nports)
return (ENXIO);
err = sc->hal.mtkswitch_port_vlan_get(sc, p);
if (err != 0)
return (err);
mii = mtkswitch_miiforport(sc, p->es_port);
if (mtkswitch_is_cpuport(sc, p->es_port)) {
/* fill in fixed values for CPU port */
/* XXX is this valid in all cases? */
p->es_flags |= ETHERSWITCH_PORT_CPU;
ifmr = &p->es_ifmr;
ifmr->ifm_count = 0;
ifmr->ifm_current = ifmr->ifm_active =
IFM_ETHER | IFM_1000_T | IFM_FDX;
ifmr->ifm_mask = 0;
ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
} else if (mii != NULL) {
err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
&mii->mii_media, SIOCGIFMEDIA);
if (err)
return (err);
} else {
ifmr = &p->es_ifmr;
ifmr->ifm_count = 0;
ifmr->ifm_current = ifmr->ifm_active = IFM_NONE;
ifmr->ifm_mask = 0;
ifmr->ifm_status = 0;
}
return (0);
}
static int
mtkswitch_setport(device_t dev, etherswitch_port_t *p)
{
int err;
struct mtkswitch_softc *sc;
struct ifmedia *ifm;
struct mii_data *mii;
struct ifnet *ifp;
sc = device_get_softc(dev);
if (p->es_port < 0 || p->es_port > sc->info.es_nports)
return (ENXIO);
/* Port flags. */
if (sc->vlan_mode == ETHERSWITCH_VLAN_DOT1Q) {
err = sc->hal.mtkswitch_port_vlan_setup(sc, p);
if (err)
return (err);
}
/* Do not allow media changes on CPU port. */
if (mtkswitch_is_cpuport(sc, p->es_port))
return (0);
mii = mtkswitch_miiforport(sc, p->es_port);
if (mii == NULL)
return (ENXIO);
ifp = mtkswitch_ifpforport(sc, p->es_port);
ifm = &mii->mii_media;
return (ifmedia_ioctl(ifp, &p->es_ifr, ifm, SIOCSIFMEDIA));
}
static void
mtkswitch_statchg(device_t dev)
{
DPRINTF(dev, "%s\n", __func__);
}
static int
mtkswitch_ifmedia_upd(struct ifnet *ifp)
{
struct mtkswitch_softc *sc = ifp->if_softc;
struct mii_data *mii = mtkswitch_miiforport(sc, ifp->if_dunit);
if (mii == NULL)
return (ENXIO);
mii_mediachg(mii);
return (0);
}
static void
mtkswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct mtkswitch_softc *sc = ifp->if_softc;
struct mii_data *mii = mtkswitch_miiforport(sc, ifp->if_dunit);
DPRINTF(sc->sc_dev, "%s\n", __func__);
if (mii == NULL)
return;
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static int
mtkswitch_getconf(device_t dev, etherswitch_conf_t *conf)
{
struct mtkswitch_softc *sc;
sc = device_get_softc(dev);
/* Return the VLAN mode. */
conf->cmd = ETHERSWITCH_CONF_VLAN_MODE;
conf->vlan_mode = sc->vlan_mode;
return (0);
}
static int
mtkswitch_setconf(device_t dev, etherswitch_conf_t *conf)
{
struct mtkswitch_softc *sc;
int err;
sc = device_get_softc(dev);
/* Set the VLAN mode. */
if (conf->cmd & ETHERSWITCH_CONF_VLAN_MODE) {
err = mtkswitch_set_vlan_mode(sc, conf->vlan_mode);
if (err != 0)
return (err);
}
return (0);
}
static int
mtkswitch_getvgroup(device_t dev, etherswitch_vlangroup_t *e)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_vlan_getvgroup(sc, e));
}
static int
mtkswitch_setvgroup(device_t dev, etherswitch_vlangroup_t *e)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_vlan_setvgroup(sc, e));
}
static int
mtkswitch_readphy(device_t dev, int phy, int reg)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_phy_read(dev, phy, reg));
}
static int
mtkswitch_writephy(device_t dev, int phy, int reg, int val)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_phy_write(dev, phy, reg, val));
}
static int
mtkswitch_readreg(device_t dev, int addr)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_reg_read(dev, addr));
}
static int
mtkswitch_writereg(device_t dev, int addr, int value)
{
struct mtkswitch_softc *sc = device_get_softc(dev);
return (sc->hal.mtkswitch_reg_write(dev, addr, value));
}
static device_method_t mtkswitch_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mtkswitch_probe),
DEVMETHOD(device_attach, mtkswitch_attach),
DEVMETHOD(device_detach, mtkswitch_detach),
/* bus interface */
DEVMETHOD(bus_add_child, device_add_child_ordered),
/* MII interface */
DEVMETHOD(miibus_readreg, mtkswitch_readphy),
DEVMETHOD(miibus_writereg, mtkswitch_writephy),
DEVMETHOD(miibus_statchg, mtkswitch_statchg),
/* MDIO interface */
DEVMETHOD(mdio_readreg, mtkswitch_readphy),
DEVMETHOD(mdio_writereg, mtkswitch_writephy),
/* ehterswitch interface */
DEVMETHOD(etherswitch_lock, mtkswitch_lock),
DEVMETHOD(etherswitch_unlock, mtkswitch_unlock),
DEVMETHOD(etherswitch_getinfo, mtkswitch_getinfo),
DEVMETHOD(etherswitch_readreg, mtkswitch_readreg),
DEVMETHOD(etherswitch_writereg, mtkswitch_writereg),
DEVMETHOD(etherswitch_readphyreg, mtkswitch_readphy),
DEVMETHOD(etherswitch_writephyreg, mtkswitch_writephy),
DEVMETHOD(etherswitch_getport, mtkswitch_getport),
DEVMETHOD(etherswitch_setport, mtkswitch_setport),
DEVMETHOD(etherswitch_getvgroup, mtkswitch_getvgroup),
DEVMETHOD(etherswitch_setvgroup, mtkswitch_setvgroup),
DEVMETHOD(etherswitch_getconf, mtkswitch_getconf),
DEVMETHOD(etherswitch_setconf, mtkswitch_setconf),
DEVMETHOD_END
};
DEFINE_CLASS_0(mtkswitch, mtkswitch_driver, mtkswitch_methods,
sizeof(struct mtkswitch_softc));
static devclass_t mtkswitch_devclass;
DRIVER_MODULE(mtkswitch, simplebus, mtkswitch_driver, mtkswitch_devclass, 0, 0);
DRIVER_MODULE(miibus, mtkswitch, miibus_driver, miibus_devclass, 0, 0);
DRIVER_MODULE(mdio, mtkswitch, mdio_driver, mdio_devclass, 0, 0);
DRIVER_MODULE(etherswitch, mtkswitch, etherswitch_driver, etherswitch_devclass,
0, 0);
MODULE_VERSION(mtkswitch, 1);
MODULE_DEPEND(mtkswitch, miibus, 1, 1, 1);
MODULE_DEPEND(mtkswitch, etherswitch, 1, 1, 1);