Move files to match FreeBSD layout

1 files changed, 576 insertions, 0 deletions

diff --git a/freebsd/sys/dev/mii/mii.c b/freebsd/sys/dev/mii/mii.c
new file mode 100644
index 00000000..c5aebad6
--- /dev/null
+++ b/freebsd/sys/dev/mii/mii.c
@@ -0,0 +1,576 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*	$NetBSD: mii.c,v 1.12 1999/08/03 19:41:49 drochner Exp $	*/
+
+/*-
+ * Copyright (c) 1998 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.
+ *
+ * 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.
+ */
+
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * MII bus layer, glues MII-capable network interface drivers to sharable
+ * PHY drivers.  This exports an interface compatible with BSD/OS 3.0's,
+ * plus some NetBSD extensions.
+ */
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#include <freebsd/sys/socket.h>
+#include <freebsd/sys/malloc.h>
+#include <freebsd/sys/module.h>
+#include <freebsd/sys/bus.h> 
+
+#include <freebsd/net/if.h>
+#include <freebsd/net/if_media.h>
+#include <freebsd/net/route.h>
+
+#include <freebsd/dev/mii/mii.h>
+#include <freebsd/dev/mii/miivar.h>
+
+MODULE_VERSION(miibus, 1);
+
+#include <freebsd/local/miibus_if.h>
+
+static int miibus_print_child(device_t dev, device_t child);
+static int miibus_read_ivar(device_t dev, device_t child, int which,
+    uintptr_t *result);
+static int miibus_child_location_str(device_t bus, device_t child, char *buf,
+    size_t buflen);
+static int miibus_child_pnpinfo_str(device_t bus, device_t child, char *buf,
+    size_t buflen);
+static int miibus_readreg(device_t, int, int);
+static int miibus_writereg(device_t, int, int, int);
+static void miibus_statchg(device_t);
+static void miibus_linkchg(device_t);
+static void miibus_mediainit(device_t);
+
+static device_method_t miibus_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_probe,		miibus_probe),
+	DEVMETHOD(device_attach,	miibus_attach),
+	DEVMETHOD(device_detach,	miibus_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+
+	/* bus interface */
+	DEVMETHOD(bus_print_child,	miibus_print_child),
+	DEVMETHOD(bus_read_ivar,	miibus_read_ivar),
+	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
+	DEVMETHOD(bus_child_pnpinfo_str, miibus_child_pnpinfo_str),
+	DEVMETHOD(bus_child_location_str, miibus_child_location_str),
+
+	/* MII interface */
+	DEVMETHOD(miibus_readreg,	miibus_readreg),
+	DEVMETHOD(miibus_writereg,	miibus_writereg),
+	DEVMETHOD(miibus_statchg,	miibus_statchg),    
+	DEVMETHOD(miibus_linkchg,	miibus_linkchg),    
+	DEVMETHOD(miibus_mediainit,	miibus_mediainit),    
+
+	{ 0, 0 }
+};
+
+devclass_t miibus_devclass;
+
+driver_t miibus_driver = {
+	"miibus",
+	miibus_methods,
+	sizeof(struct mii_data)
+};
+
+struct miibus_ivars {
+	struct ifnet	*ifp;
+	ifm_change_cb_t	ifmedia_upd;
+	ifm_stat_cb_t	ifmedia_sts;
+	int		mii_flags;
+};
+
+int
+miibus_probe(device_t dev)
+{
+
+	device_set_desc(dev, "MII bus");
+
+	return (BUS_PROBE_SPECIFIC);
+}
+
+int
+miibus_attach(device_t dev)
+{
+	struct miibus_ivars	*ivars;
+	struct mii_attach_args	*ma;
+	struct mii_data		*mii;
+	device_t		*children;
+	int			i, nchildren;
+
+	mii = device_get_softc(dev);
+	nchildren = 0;
+	if (device_get_children(dev, &children, &nchildren) == 0) {
+		for (i = 0; i < nchildren; i++) {
+			ma = device_get_ivars(children[i]);
+			ma->mii_data = mii;
+		}
+		free(children, M_TEMP);
+	}
+	if (nchildren == 0) {
+		device_printf(dev, "cannot get children\n");
+		return (ENXIO);
+	}
+	ivars = device_get_ivars(dev);
+	ifmedia_init(&mii->mii_media, IFM_IMASK, ivars->ifmedia_upd,
+	    ivars->ifmedia_sts);
+	mii->mii_ifp = ivars->ifp;
+	mii->mii_ifp->if_capabilities |= IFCAP_LINKSTATE;
+	mii->mii_ifp->if_capenable |= IFCAP_LINKSTATE;
+	LIST_INIT(&mii->mii_phys);
+
+	return (bus_generic_attach(dev));
+}
+
+int
+miibus_detach(device_t dev)
+{
+	struct mii_data		*mii;
+
+	bus_generic_detach(dev);
+	mii = device_get_softc(dev);
+	ifmedia_removeall(&mii->mii_media);
+	mii->mii_ifp = NULL;
+
+	return (0);
+}
+
+static int
+miibus_print_child(device_t dev, device_t child)
+{
+	struct mii_attach_args *ma;
+	int retval;
+
+	ma = device_get_ivars(child);
+	retval = bus_print_child_header(dev, child);
+	retval += printf(" PHY %d", ma->mii_phyno);
+	retval += bus_print_child_footer(dev, child);
+
+	return (retval);
+}
+
+static int
+miibus_read_ivar(device_t dev, device_t child __unused, int which,
+    uintptr_t *result)
+{
+	struct miibus_ivars *ivars;
+
+	/*
+	 * NB: this uses the instance variables of the miibus rather than
+	 * its PHY children.
+	 */
+	ivars = device_get_ivars(dev);
+	switch (which) {
+	case MIIBUS_IVAR_FLAGS:
+		*result = ivars->mii_flags;
+		break;
+	default:
+		return (ENOENT);
+	}
+	return (0);
+}
+
+static int
+miibus_child_pnpinfo_str(device_t bus __unused, device_t child, char *buf,
+    size_t buflen)
+{
+	struct mii_attach_args *ma;
+
+	ma = device_get_ivars(child);
+	snprintf(buf, buflen, "oui=0x%x model=0x%x rev=0x%x",
+	    MII_OUI(ma->mii_id1, ma->mii_id2),
+	    MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
+	return (0);
+}
+
+static int
+miibus_child_location_str(device_t bus __unused, device_t child, char *buf,
+    size_t buflen)
+{
+	struct mii_attach_args *ma;
+
+	ma = device_get_ivars(child);
+	snprintf(buf, buflen, "phyno=%d", ma->mii_phyno);
+	return (0);
+}
+
+static int
+miibus_readreg(device_t dev, int phy, int reg)
+{
+	device_t		parent;
+
+	parent = device_get_parent(dev);
+	return (MIIBUS_READREG(parent, phy, reg));
+}
+
+static int
+miibus_writereg(device_t dev, int phy, int reg, int data)
+{
+	device_t		parent;
+
+	parent = device_get_parent(dev);
+	return (MIIBUS_WRITEREG(parent, phy, reg, data));
+}
+
+static void
+miibus_statchg(device_t dev)
+{
+	device_t		parent;
+	struct mii_data		*mii;
+	struct ifnet		*ifp;
+
+	parent = device_get_parent(dev);
+	MIIBUS_STATCHG(parent);
+
+	mii = device_get_softc(dev);
+
+	/*
+	 * Note that each NIC's softc must start with an ifnet pointer.
+	 * XXX: EVIL HACK!
+	 */
+	ifp = *(struct ifnet **)device_get_softc(parent);
+	ifp->if_baudrate = ifmedia_baudrate(mii->mii_media_active);
+}
+
+static void
+miibus_linkchg(device_t dev)
+{
+	struct mii_data		*mii;
+	device_t		parent;
+	int			link_state;
+
+	parent = device_get_parent(dev);
+	MIIBUS_LINKCHG(parent);
+
+	mii = device_get_softc(dev);
+	
+	if (mii->mii_media_status & IFM_AVALID) {
+		if (mii->mii_media_status & IFM_ACTIVE)
+			link_state = LINK_STATE_UP;
+		else
+			link_state = LINK_STATE_DOWN;
+	} else
+		link_state = LINK_STATE_UNKNOWN;
+	/*
+	 * Note that each NIC's softc must start with an ifnet pointer.
+	 * XXX: EVIL HACK!
+	 */
+	if_link_state_change(*(struct ifnet**)device_get_softc(parent), link_state);
+}
+
+static void
+miibus_mediainit(device_t dev)
+{
+	struct mii_data		*mii;
+	struct ifmedia_entry	*m;
+	int			media = 0;
+
+	/* Poke the parent in case it has any media of its own to add. */
+	MIIBUS_MEDIAINIT(device_get_parent(dev));
+
+	mii = device_get_softc(dev);
+	LIST_FOREACH(m, &mii->mii_media.ifm_list, ifm_list) {
+		media = m->ifm_media;
+		if (media == (IFM_ETHER | IFM_AUTO))
+			break;
+	}
+
+	ifmedia_set(&mii->mii_media, media);
+}
+
+/*
+ * Helper function used by network interface drivers, attaches the miibus and
+ * the PHYs to the network interface driver parent.
+ */
+int
+mii_attach(device_t dev, device_t *miibus, struct ifnet *ifp,
+    ifm_change_cb_t ifmedia_upd, ifm_stat_cb_t ifmedia_sts, int capmask,
+    int phyloc, int offloc, int flags)
+{
+	struct miibus_ivars *ivars;
+	struct mii_attach_args ma, *args;
+	device_t *children, phy;
+	int bmsr, first, i, nchildren, offset, phymax, phymin, rv;
+
+	if (phyloc != MII_PHY_ANY && offloc != MII_OFFSET_ANY) {
+		printf("%s: phyloc and offloc specified\n", __func__);
+		return (EINVAL);
+	}
+
+	if (offloc != MII_OFFSET_ANY && (offloc < 0 || offloc >= MII_NPHY)) {
+		printf("%s: ivalid offloc %d\n", __func__, offloc);
+		return (EINVAL);
+	}
+
+	if (phyloc == MII_PHY_ANY) {
+		phymin = 0;
+		phymax = MII_NPHY - 1;
+	} else {
+		if (phyloc < 0 || phyloc >= MII_NPHY) {
+			printf("%s: ivalid phyloc %d\n", __func__, phyloc);
+			return (EINVAL);
+		}
+		phymin = phymax = phyloc;
+	}
+
+	first = 0;
+	if (*miibus == NULL) {
+		first = 1;
+		ivars = malloc(sizeof(*ivars), M_DEVBUF, M_NOWAIT);
+		if (ivars == NULL)
+			return (ENOMEM);
+		ivars->ifp = ifp;
+		ivars->ifmedia_upd = ifmedia_upd;
+		ivars->ifmedia_sts = ifmedia_sts;
+		ivars->mii_flags = flags;
+		*miibus = device_add_child(dev, "miibus", -1);
+		if (*miibus == NULL) {
+			rv = ENXIO;
+			goto fail;
+		}
+		device_set_ivars(*miibus, ivars);
+	} else {
+		ivars = device_get_ivars(*miibus);
+		if (ivars->ifp != ifp || ivars->ifmedia_upd != ifmedia_upd ||
+		    ivars->ifmedia_sts != ifmedia_sts ||
+		    ivars->mii_flags != flags) {
+			printf("%s: non-matching invariant\n", __func__);
+			return (EINVAL);
+		}
+		/*
+		 * Assignment of the attach arguments mii_data for the first
+		 * pass is done in miibus_attach(), i.e. once the miibus softc
+		 * has been allocated.
+		 */
+		ma.mii_data = device_get_softc(*miibus);
+	} 
+
+	ma.mii_capmask = capmask;
+
+	phy = NULL;
+	offset = 0;
+	for (ma.mii_phyno = phymin; ma.mii_phyno <= phymax; ma.mii_phyno++) {
+		/*
+		 * Make sure we haven't already configured a PHY at this
+		 * address.  This allows mii_attach() to be called
+		 * multiple times.
+		 */
+		if (device_get_children(*miibus, &children, &nchildren) == 0) {
+			for (i = 0; i < nchildren; i++) {
+				args = device_get_ivars(children[i]);
+				if (args->mii_phyno == ma.mii_phyno) {
+					/*
+					 * Yes, there is already something
+					 * configured at this address.
+					 */
+					free(children, M_TEMP);
+					goto skip;
+				}
+			}
+			free(children, M_TEMP);
+		}
+
+		/*
+		 * Check to see if there is a PHY at this address.  Note,
+		 * many braindead PHYs report 0/0 in their ID registers,
+		 * so we test for media in the BMSR.
+	 	 */
+		bmsr = MIIBUS_READREG(dev, ma.mii_phyno, MII_BMSR);
+		if (bmsr == 0 || bmsr == 0xffff ||
+		    (bmsr & (BMSR_EXTSTAT | BMSR_MEDIAMASK)) == 0) {
+			/* Assume no PHY at this address. */
+			continue;
+		}
+
+		/*
+		 * There is a PHY at this address.  If we were given an
+		 * `offset' locator, skip this PHY if it doesn't match.
+		 */
+		if (offloc != MII_OFFSET_ANY && offloc != offset)
+			goto skip;
+
+		/*
+		 * Extract the IDs. Braindead PHYs will be handled by
+		 * the `ukphy' driver, as we have no ID information to
+		 * match on.
+	 	 */
+		ma.mii_id1 = MIIBUS_READREG(dev, ma.mii_phyno, MII_PHYIDR1);
+		ma.mii_id2 = MIIBUS_READREG(dev, ma.mii_phyno, MII_PHYIDR2);
+
+		args = malloc(sizeof(struct mii_attach_args), M_DEVBUF,
+		    M_NOWAIT);
+		if (args == NULL)
+			goto skip;
+		bcopy((char *)&ma, (char *)args, sizeof(ma));
+		phy = device_add_child(*miibus, NULL, -1);
+		if (phy == NULL) {
+			free(args, M_DEVBUF);
+			goto skip;
+		}
+		device_set_ivars(phy, args);
+ skip:
+		offset++;
+	}
+
+	if (first != 0) {
+		if (phy == NULL) {
+			rv = ENXIO;
+			goto fail;
+		}
+		rv = bus_generic_attach(dev);
+		if (rv != 0)
+			goto fail;
+
+		/* Attaching of the PHY drivers is done in miibus_attach(). */
+		return (0);
+	}
+	rv = bus_generic_attach(*miibus);
+	if (rv != 0)
+		goto fail;
+
+	return (0);
+
+ fail:
+	if (*miibus != NULL)
+		device_delete_child(dev, *miibus);
+	free(ivars, M_DEVBUF);
+	if (first != 0)
+		*miibus = NULL;
+	return (rv);
+}
+
+int
+mii_phy_probe(device_t dev, device_t *child, ifm_change_cb_t ifmedia_upd,
+    ifm_stat_cb_t ifmedia_sts)
+{
+	struct ifnet *ifp;
+
+	/*
+	 * Note that each NIC's softc must start with an ifnet pointer.
+	 * XXX: EVIL HACK!
+	 */
+	ifp = *(struct ifnet **)device_get_softc(dev);
+	return (mii_attach(dev, child, ifp, ifmedia_upd, ifmedia_sts,
+	    BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0));
+}
+
+/*
+ * Media changed; notify all PHYs.
+ */
+int
+mii_mediachg(struct mii_data *mii)
+{
+	struct mii_softc *child;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int rv;
+
+	mii->mii_media_status = 0;
+	mii->mii_media_active = IFM_NONE;
+
+	LIST_FOREACH(child, &mii->mii_phys, mii_list) {
+		/*
+		 * If the media indicates a different PHY instance,
+		 * isolate this one.
+		 */
+		if (IFM_INST(ife->ifm_media) != child->mii_inst) {
+			if ((child->mii_flags & MIIF_NOISOLATE) != 0) {
+				device_printf(child->mii_dev, "%s: "
+				    "can't handle non-zero PHY instance %d\n",
+				    __func__, child->mii_inst);
+				continue;
+			}
+			PHY_WRITE(child, MII_BMCR, PHY_READ(child, MII_BMCR) |
+			    BMCR_ISO);
+			continue;
+		}
+		rv = (*child->mii_service)(child, mii, MII_MEDIACHG);
+		if (rv)
+			return (rv);
+	}
+	return (0);
+}
+
+/*
+ * Call the PHY tick routines, used during autonegotiation.
+ */
+void
+mii_tick(struct mii_data *mii)
+{
+	struct mii_softc *child;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+
+	LIST_FOREACH(child, &mii->mii_phys, mii_list) {
+		/*
+		 * If this PHY instance isn't currently selected, just skip
+		 * it.
+		 */
+		if (IFM_INST(ife->ifm_media) != child->mii_inst)
+			continue;
+		(void)(*child->mii_service)(child, mii, MII_TICK);
+	}
+}
+
+/*
+ * Get media status from PHYs.
+ */
+void
+mii_pollstat(struct mii_data *mii)
+{
+	struct mii_softc *child;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+
+	mii->mii_media_status = 0;
+	mii->mii_media_active = IFM_NONE;
+
+	LIST_FOREACH(child, &mii->mii_phys, mii_list) {
+		/*
+		 * If we're not polling this PHY instance, just skip it.
+		 */
+		if (IFM_INST(ife->ifm_media) != child->mii_inst)
+			continue;
+		(void)(*child->mii_service)(child, mii, MII_POLLSTAT);
+	}
+}
+
+/*
+ * Inform the PHYs that the interface is down.
+ */
+void
+mii_down(struct mii_data *mii)
+{
+	struct mii_softc *child;
+
+	LIST_FOREACH(child, &mii->mii_phys, mii_list)
+		mii_phy_down(child);
+}