Author: adrian
Date: Fri Apr 19 17:50:38 2013
New Revision: 249651
URL: http://svnweb.freebsd.org/changeset/base/249651
Log:
Implement a very basic multi-PHY aware switch device.
This is intended to be used as a stop-gap for switch devices
which expose multiple ethernet PHYs but we don't have a driver
for - here, etherswitchcfg and the general switch configuration
API can be used to interface to said PHYs.
Submitted by: Luiz Otavio O Souza <loos...@gmail.com>
Added:
head/sys/dev/etherswitch/ukswitch/
head/sys/dev/etherswitch/ukswitch/ukswitch.c (contents, props changed)
Modified:
head/sys/conf/files
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Fri Apr 19 15:19:29 2013 (r249650)
+++ head/sys/conf/files Fri Apr 19 17:50:38 2013 (r249651)
@@ -1284,6 +1284,7 @@ dev/etherswitch/mdio_if.m optional miip
dev/etherswitch/mdio.c optional miiproxy
dev/etherswitch/miiproxy.c optional miiproxy
dev/etherswitch/rtl8366/rtl8366rb.c optional rtl8366rb
+dev/etherswitch/ukswitch/ukswitch.c optional ukswitch
dev/ex/if_ex.c optional ex
dev/ex/if_ex_isa.c optional ex isa
dev/ex/if_ex_pccard.c optional ex pccard
Added: head/sys/dev/etherswitch/ukswitch/ukswitch.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/etherswitch/ukswitch/ukswitch.c Fri Apr 19 17:50:38
2013 (r249651)
@@ -0,0 +1,570 @@
+/*-
+ * Copyright (c) 2013 Luiz Otavio O Souza.
+ * 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/module.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/sysctl.h>
+#include <sys/systm.h>
+
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/ethernet.h>
+#include <net/if_dl.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/etherswitch/mdio.h>
+
+#include <dev/etherswitch/etherswitch.h>
+
+#include "mdio_if.h"
+#include "miibus_if.h"
+#include "etherswitch_if.h"
+
+MALLOC_DECLARE(M_UKSWITCH);
+MALLOC_DEFINE(M_UKSWITCH, "ukswitch", "ukswitch data structures");
+
+struct ukswitch_softc {
+ struct mtx sc_mtx; /* serialize access to softc */
+ device_t sc_dev;
+ int media; /* cpu port media */
+ int cpuport; /* which PHY is connected to the CPU */
+ int phymask; /* PHYs we manage */
+ int numports; /* number of ports */
+ int ifpport[MII_NPHY];
+ int *portphy;
+ char **ifname;
+ device_t **miibus;
+ struct ifnet **ifp;
+ struct callout callout_tick;
+ etherswitch_info_t info;
+};
+
+#define UKSWITCH_LOCK(_sc) \
+ mtx_lock(&(_sc)->sc_mtx)
+#define UKSWITCH_UNLOCK(_sc) \
+ mtx_unlock(&(_sc)->sc_mtx)
+#define UKSWITCH_LOCK_ASSERT(_sc, _what) \
+ mtx_assert(&(_sc)->sc_mtx, (_what))
+#define UKSWITCH_TRYLOCK(_sc) \
+ mtx_trylock(&(_sc)->sc_mtx)
+
+#if defined(DEBUG)
+#define DPRINTF(dev, args...) device_printf(dev, args)
+#else
+#define DPRINTF(dev, args...)
+#endif
+
+static inline int ukswitch_portforphy(struct ukswitch_softc *, int);
+static void ukswitch_tick(void *);
+static int ukswitch_ifmedia_upd(struct ifnet *);
+static void ukswitch_ifmedia_sts(struct ifnet *, struct ifmediareq *);
+
+static int
+ukswitch_probe(device_t dev)
+{
+ struct ukswitch_softc *sc;
+
+ sc = device_get_softc(dev);
+ bzero(sc, sizeof(*sc));
+
+ device_set_desc_copy(dev, "Generic MDIO switch driver");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ukswitch_attach_phys(struct ukswitch_softc *sc)
+{
+ int phy, port = 0, 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 < MII_NPHY; phy++) {
+ if (((1 << phy) & sc->phymask) == 0)
+ continue;
+ sc->ifpport[phy] = port;
+ sc->portphy[port] = phy;
+// if (phy == sc->cpuport)
+// sc->info.es_cpuport = port;
+ sc->ifp[port] = if_alloc(IFT_ETHER);
+ sc->ifp[port]->if_softc = sc;
+ sc->ifp[port]->if_flags |= IFF_UP | IFF_BROADCAST |
+ IFF_DRV_RUNNING | IFF_SIMPLEX;
+ sc->ifname[port] = malloc(strlen(name)+1, M_UKSWITCH, M_WAITOK);
+ bcopy(name, sc->ifname[port], strlen(name)+1);
+ if_initname(sc->ifp[port], sc->ifname[port], port);
+ sc->miibus[port] = malloc(sizeof(device_t), M_UKSWITCH,
+ M_WAITOK | M_ZERO);
+ err = mii_attach(sc->sc_dev, sc->miibus[port], sc->ifp[port],
+ ukswitch_ifmedia_upd, ukswitch_ifmedia_sts, \
+ BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0);
+ DPRINTF(sc->sc_dev, "%s attached to pseudo interface %s\n",
+ device_get_nameunit(*sc->miibus[port]),
+ sc->ifp[port]->if_xname);
+ if (err != 0) {
+ device_printf(sc->sc_dev,
+ "attaching PHY %d failed\n",
+ phy);
+ break;
+ }
+ sc->info.es_nports = port + 1;
+ if (++port >= sc->numports)
+ break;
+ }
+ return (err);
+}
+
+static int
+ukswitch_attach(device_t dev)
+{
+ struct ukswitch_softc *sc;
+ int err = 0;
+
+ sc = device_get_softc(dev);
+
+ sc->sc_dev = dev;
+ mtx_init(&sc->sc_mtx, "ukswitch", NULL, MTX_DEF);
+ strlcpy(sc->info.es_name, device_get_desc(dev),
+ sizeof(sc->info.es_name));
+
+ /* XXX Defaults */
+ sc->numports = 6;
+ sc->phymask = 0x0f;
+ sc->cpuport = 5;
+ sc->media = 100;
+
+ (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
+ "numports", &sc->numports);
+ (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
+ "phymask", &sc->phymask);
+ (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
+ "cpuport", &sc->cpuport);
+ (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
+ "media", &sc->media);
+
+ /* Support only fast and giga ethernet. */
+ if (sc->media != 100 && sc->media != 1000)
+ sc->media = 100;
+
+ /* Always attach the cpu port. */
+ sc->phymask |= (1 << sc->cpuport);
+// sc->info.es_cpuport = sc->cpuport;
+
+ /* We do not support any vlan groups. */
+ sc->info.es_nvlangroups = 0;
+
+ sc->ifp = malloc(sizeof(struct ifnet *) * sc->numports, M_UKSWITCH,
+ M_WAITOK | M_ZERO);
+ sc->ifname = malloc(sizeof(char *) * sc->numports, M_UKSWITCH,
+ M_WAITOK | M_ZERO);
+ sc->miibus = malloc(sizeof(device_t *) * sc->numports, M_UKSWITCH,
+ M_WAITOK | M_ZERO);
+ sc->portphy = malloc(sizeof(int) * sc->numports, M_UKSWITCH,
+ M_WAITOK | M_ZERO);
+
+ /*
+ * Attach the PHYs and complete the bus enumeration.
+ */
+ err = ukswitch_attach_phys(sc);
+ if (err != 0)
+ return (err);
+
+ bus_generic_probe(dev);
+ bus_enumerate_hinted_children(dev);
+ err = bus_generic_attach(dev);
+ if (err != 0)
+ return (err);
+
+ callout_init(&sc->callout_tick, 0);
+
+ ukswitch_tick(sc);
+
+ return (err);
+}
+
+static int
+ukswitch_detach(device_t dev)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+ int i, port;
+
+ callout_drain(&sc->callout_tick);
+
+ for (i=0; i < MII_NPHY; i++) {
+ if (((1 << i) & sc->phymask) == 0)
+ continue;
+ port = ukswitch_portforphy(sc, i);
+ if (sc->miibus[port] != NULL)
+ device_delete_child(dev, (*sc->miibus[port]));
+ if (sc->ifp[port] != NULL)
+ if_free(sc->ifp[port]);
+ free(sc->ifname[port], M_UKSWITCH);
+ free(sc->miibus[port], M_UKSWITCH);
+ }
+
+ free(sc->portphy, M_UKSWITCH);
+ free(sc->miibus, M_UKSWITCH);
+ free(sc->ifname, M_UKSWITCH);
+ free(sc->ifp, M_UKSWITCH);
+
+ bus_generic_detach(dev);
+ mtx_destroy(&sc->sc_mtx);
+
+ return (0);
+}
+
+/*
+ * Convert PHY number to port number.
+ */
+static inline int
+ukswitch_portforphy(struct ukswitch_softc *sc, int phy)
+{
+
+ return (sc->ifpport[phy]);
+}
+
+static inline struct mii_data *
+ukswitch_miiforport(struct ukswitch_softc *sc, int port)
+{
+
+ if (port < 0 || port > sc->numports)
+ return (NULL);
+ return (device_get_softc(*sc->miibus[port]));
+}
+
+static inline struct ifnet *
+ukswitch_ifpforport(struct ukswitch_softc *sc, int port)
+{
+
+ if (port < 0 || port > sc->numports)
+ return (NULL);
+ return (sc->ifp[port]);
+}
+
+/*
+ * Poll the status for all PHYs.
+ */
+static void
+ukswitch_miipollstat(struct ukswitch_softc *sc)
+{
+ int i, port;
+ struct mii_data *mii;
+ struct mii_softc *miisc;
+
+ UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
+
+ for (i = 0; i < MII_NPHY; i++) {
+ if (((1 << i) & sc->phymask) == 0)
+ continue;
+ port = ukswitch_portforphy(sc, i);
+ if ((*sc->miibus[port]) == NULL)
+ continue;
+ mii = device_get_softc(*sc->miibus[port]);
+ LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
+ if (IFM_INST(mii->mii_media.ifm_cur->ifm_media) !=
+ miisc->mii_inst)
+ continue;
+ ukphy_status(miisc);
+ mii_phy_update(miisc, MII_POLLSTAT);
+ }
+ }
+}
+
+static void
+ukswitch_tick(void *arg)
+{
+ struct ukswitch_softc *sc = arg;
+
+ ukswitch_miipollstat(sc);
+ callout_reset(&sc->callout_tick, hz, ukswitch_tick, sc);
+}
+
+static void
+ukswitch_lock(device_t dev)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+
+ UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
+ UKSWITCH_LOCK(sc);
+}
+
+static void
+ukswitch_unlock(device_t dev)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+
+ UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
+ UKSWITCH_UNLOCK(sc);
+}
+
+static etherswitch_info_t *
+ukswitch_getinfo(device_t dev)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+
+ return (&sc->info);
+}
+
+static int
+ukswitch_getport(device_t dev, etherswitch_port_t *p)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+ struct mii_data *mii;
+ struct ifmediareq *ifmr = &p->es_ifmr;
+ int err;
+
+ if (p->es_port < 0 || p->es_port >= sc->numports)
+ return (ENXIO);
+ p->es_vlangroup = 0;
+
+ mii = ukswitch_miiforport(sc, p->es_port);
+ if (sc->portphy[p->es_port] == sc->cpuport) {
+ /* fill in fixed values for CPU port */
+ ifmr->ifm_count = 0;
+ if (sc->media == 100)
+ ifmr->ifm_current = ifmr->ifm_active =
+ IFM_ETHER | IFM_100_TX | IFM_FDX;
+ else
+ 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 {
+ return (ENXIO);
+ }
+ return (0);
+}
+
+static int
+ukswitch_setport(device_t dev, etherswitch_port_t *p)
+{
+ struct ukswitch_softc *sc = device_get_softc(dev);
+ struct ifmedia *ifm;
+ struct mii_data *mii;
+ struct ifnet *ifp;
+ int err;
+
+ if (p->es_port < 0 || p->es_port >= sc->numports)
+ return (ENXIO);
+
+ if (sc->portphy[p->es_port] == sc->cpuport)
+ return (ENXIO);
+
+ mii = ukswitch_miiforport(sc, p->es_port);
+ if (mii == NULL)
+ return (ENXIO);
+
+ ifp = ukswitch_ifpforport(sc, p->es_port);
+
+ ifm = &mii->mii_media;
+ err = ifmedia_ioctl(ifp, &p->es_ifr, ifm, SIOCSIFMEDIA);
+ return (err);
+}
+
+static int
+ukswitch_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
+{
+
+ /* Not supported. */
+ vg->es_vid = 0;
+ vg->es_member_ports = 0;
+ vg->es_untagged_ports = 0;
+ vg->es_fid = 0;
+ return (0);
+}
+
+static int
+ukswitch_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
+{
+
+ /* Not supported. */
+ return (0);
+}
+
+static void
+ukswitch_statchg(device_t dev)
+{
+
+ DPRINTF(dev, "%s\n", __func__);
+}
+
+static int
+ukswitch_ifmedia_upd(struct ifnet *ifp)
+{
+ struct ukswitch_softc *sc = ifp->if_softc;
+ struct mii_data *mii = ukswitch_miiforport(sc, ifp->if_dunit);
+
+ DPRINTF(sc->sc_dev, "%s\n", __func__);
+ if (mii == NULL)
+ return (ENXIO);
+ mii_mediachg(mii);
+ return (0);
+}
+
+static void
+ukswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
+{
+ struct ukswitch_softc *sc = ifp->if_softc;
+ struct mii_data *mii = ukswitch_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
+ukswitch_readphy(device_t dev, int phy, int reg)
+{
+ struct ukswitch_softc *sc;
+ int data;
+
+ sc = device_get_softc(dev);
+ UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
+
+ if (phy < 0 || phy >= 32)
+ return (ENXIO);
+ if (reg < 0 || reg >= 32)
+ return (ENXIO);
+
+ UKSWITCH_LOCK(sc);
+ data = MDIO_READREG(device_get_parent(dev), phy, reg);
+ UKSWITCH_UNLOCK(sc);
+
+ return (data);
+}
+
+static int
+ukswitch_writephy(device_t dev, int phy, int reg, int data)
+{
+ struct ukswitch_softc *sc;
+ int err;
+
+ sc = device_get_softc(dev);
+ UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
+
+ if (phy < 0 || phy >= 32)
+ return (ENXIO);
+ if (reg < 0 || reg >= 32)
+ return (ENXIO);
+
+ UKSWITCH_LOCK(sc);
+ err = MDIO_WRITEREG(device_get_parent(dev), phy, reg, data);
+ UKSWITCH_UNLOCK(sc);
+
+ return (err);
+}
+
+static int
+ukswitch_readreg(device_t dev, int addr)
+{
+ struct ukswitch_softc *sc;
+
+ sc = device_get_softc(dev);
+ UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
+
+ /* Not supported. */
+ return (0);
+}
+
+static int
+ukswitch_writereg(device_t dev, int addr, int value)
+{
+ struct ukswitch_softc *sc;
+
+ sc = device_get_softc(dev);
+ UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
+
+ /* Not supported. */
+ return (0);
+}
+
+static device_method_t ukswitch_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, ukswitch_probe),
+ DEVMETHOD(device_attach, ukswitch_attach),
+ DEVMETHOD(device_detach, ukswitch_detach),
+
+ /* bus interface */
+ DEVMETHOD(bus_add_child, device_add_child_ordered),
+
+ /* MII interface */
+ DEVMETHOD(miibus_readreg, ukswitch_readphy),
+ DEVMETHOD(miibus_writereg, ukswitch_writephy),
+ DEVMETHOD(miibus_statchg, ukswitch_statchg),
+
+ /* MDIO interface */
+ DEVMETHOD(mdio_readreg, ukswitch_readphy),
+ DEVMETHOD(mdio_writereg, ukswitch_writephy),
+
+ /* etherswitch interface */
+ DEVMETHOD(etherswitch_lock, ukswitch_lock),
+ DEVMETHOD(etherswitch_unlock, ukswitch_unlock),
+ DEVMETHOD(etherswitch_getinfo, ukswitch_getinfo),
+ DEVMETHOD(etherswitch_readreg, ukswitch_readreg),
+ DEVMETHOD(etherswitch_writereg, ukswitch_writereg),
+ DEVMETHOD(etherswitch_readphyreg, ukswitch_readphy),
+ DEVMETHOD(etherswitch_writephyreg, ukswitch_writephy),
+ DEVMETHOD(etherswitch_getport, ukswitch_getport),
+ DEVMETHOD(etherswitch_setport, ukswitch_setport),
+ DEVMETHOD(etherswitch_getvgroup, ukswitch_getvgroup),
+ DEVMETHOD(etherswitch_setvgroup, ukswitch_setvgroup),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_0(ukswitch, ukswitch_driver, ukswitch_methods,
+ sizeof(struct ukswitch_softc));
+static devclass_t ukswitch_devclass;
+
+DRIVER_MODULE(ukswitch, mdio, ukswitch_driver, ukswitch_devclass, 0, 0);
+DRIVER_MODULE(miibus, ukswitch, miibus_driver, miibus_devclass, 0, 0);
+DRIVER_MODULE(mdio, ukswitch, mdio_driver, mdio_devclass, 0, 0);
+DRIVER_MODULE(etherswitch, ukswitch, etherswitch_driver, etherswitch_devclass,
0, 0);
+MODULE_VERSION(ukswitch, 1);
+MODULE_DEPEND(ukswitch, miibus, 1, 1, 1); /* XXX which versions? */
+MODULE_DEPEND(ukswitch, etherswitch, 1, 1, 1); /* XXX which versions? */
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