/*- * Copyright (c) 2017 Ian Lepore * All rights reserved. * * Development sponsored by Microsemi, Inc. * * 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 /* * Utility functions for PHY drivers on systems configured using FDT data. */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Table to translate MII_CONTYPE_xxxx constants to/from devicetree strings. * We explicitly associate the enum values with the strings in a table to avoid * relying on this list being sorted in the same order as the enum in miivar.h, * and to avoid problems if the enum gains new types that aren't in the FDT * data. However, the "unknown" entry must be first because it is referenced * using subscript 0 in mii_fdt_contype_to_name(). */ static struct contype_names { mii_contype_t type; const char *name; } fdt_contype_names[] = { {MII_CONTYPE_UNKNOWN, "unknown"}, {MII_CONTYPE_MII, "mii"}, {MII_CONTYPE_GMII, "gmii"}, {MII_CONTYPE_SGMII, "sgmii"}, {MII_CONTYPE_QSGMII, "qsgmii"}, {MII_CONTYPE_TBI, "tbi"}, {MII_CONTYPE_REVMII, "rev-mii"}, {MII_CONTYPE_RMII, "rmii"}, {MII_CONTYPE_RGMII, "rgmii"}, {MII_CONTYPE_RGMII_ID, "rgmii-id"}, {MII_CONTYPE_RGMII_RXID, "rgmii-rxid"}, {MII_CONTYPE_RGMII_TXID, "rgmii-txid"}, {MII_CONTYPE_RTBI, "rtbi"}, {MII_CONTYPE_SMII, "smii"}, {MII_CONTYPE_XGMII, "xgmii"}, {MII_CONTYPE_TRGMII, "trgmii"}, {MII_CONTYPE_2000BX, "2000base-x"}, {MII_CONTYPE_2500BX, "2500base-x"}, {MII_CONTYPE_RXAUI, "rxaui"}, }; static phandle_t mii_fdt_get_phynode(phandle_t macnode) { static const char *props[] = { "phy-handle", "phy", "phy-device" }; pcell_t xref; u_int i; for (i = 0; i < nitems(props); ++i) { if (OF_getencprop(macnode, props[i], &xref, sizeof(xref)) > 0) return (OF_node_from_xref(xref)); } return (-1); } static phandle_t mii_fdt_lookup_phy(phandle_t node, int addr) { phandle_t ports, phynode, child; int reg; /* First try to see if we have a direct xref pointing to a PHY. */ phynode = mii_fdt_get_phynode(node); if (phynode != -1) return (phynode); /* * Now handle the "switch" case. * Search "ports" subnode for nodes that describe a switch port * including a PHY xref. * Since we have multiple candidates select one based on PHY address. */ ports = ofw_bus_find_child(node, "ports"); if (ports <= 0) ports = ofw_bus_find_child(node, "ethernet-ports"); if (ports <= 0) return (-1); for (child = OF_child(ports); child != 0; child = OF_peer(child)) { if (ofw_bus_node_status_okay(child) == 0) continue; phynode = mii_fdt_get_phynode(child); if (phynode <= 0) continue; if (OF_getencprop(phynode, "reg", ®, sizeof(reg)) <= 0) continue; if (reg == addr) return (phynode); } return (-1); } mii_contype_t mii_fdt_contype_from_name(const char *name) { u_int i; for (i = 0; i < nitems(fdt_contype_names); ++i) { if (strcmp(name, fdt_contype_names[i].name) == 0) return (fdt_contype_names[i].type); } return (MII_CONTYPE_UNKNOWN); } const char * mii_fdt_contype_to_name(mii_contype_t contype) { u_int i; for (i = 0; i < nitems(fdt_contype_names); ++i) { if (contype == fdt_contype_names[i].type) return (fdt_contype_names[i].name); } return (fdt_contype_names[0].name); } mii_contype_t mii_fdt_get_contype(phandle_t macnode) { char val[32]; if (OF_getprop(macnode, "phy-mode", val, sizeof(val)) <= 0 && OF_getprop(macnode, "phy-connection-type", val, sizeof(val)) <= 0) { return (MII_CONTYPE_UNKNOWN); } return (mii_fdt_contype_from_name(val)); } void mii_fdt_free_config(struct mii_fdt_phy_config *cfg) { free(cfg, M_OFWPROP); } mii_fdt_phy_config_t * mii_fdt_get_config(device_t phydev) { struct mii_attach_args *ma; mii_fdt_phy_config_t *cfg; device_t miibus, macdev; pcell_t val; ma = device_get_ivars(phydev); miibus = device_get_parent(phydev); macdev = device_get_parent(miibus); cfg = malloc(sizeof(*cfg), M_OFWPROP, M_ZERO | M_WAITOK); /* * If we can't find our parent MAC's node, there's nothing more we can * fill in; cfg is already full of zero/default values, return it. */ if ((cfg->macnode = ofw_bus_get_node(macdev)) == -1) return (cfg); cfg->con_type = mii_fdt_get_contype(cfg->macnode); /* * If we can't find our own PHY node, there's nothing more we can fill * in, just return what we've got. */ cfg->phynode = mii_fdt_lookup_phy(cfg->macnode, ma->mii_phyno); if (cfg->phynode == -1) return (cfg); if (OF_getencprop(cfg->phynode, "max-speed", &val, sizeof(val)) > 0) cfg->max_speed = val; if (ofw_bus_node_is_compatible(cfg->phynode, "ethernet-phy-ieee802.3-c45")) cfg->flags |= MIIF_FDT_COMPAT_CLAUSE45; if (OF_hasprop(cfg->phynode, "broken-turn-around")) cfg->flags |= MIIF_FDT_BROKEN_TURNAROUND; if (OF_hasprop(cfg->phynode, "enet-phy-lane-swap")) cfg->flags |= MIIF_FDT_LANE_SWAP; if (OF_hasprop(cfg->phynode, "enet-phy-lane-no-swap")) cfg->flags |= MIIF_FDT_NO_LANE_SWAP; if (OF_hasprop(cfg->phynode, "eee-broken-100tx")) cfg->flags |= MIIF_FDT_EEE_BROKEN_100TX; if (OF_hasprop(cfg->phynode, "eee-broken-1000t")) cfg->flags |= MIIF_FDT_EEE_BROKEN_1000T; if (OF_hasprop(cfg->phynode, "eee-broken-10gt")) cfg->flags |= MIIF_FDT_EEE_BROKEN_10GT; if (OF_hasprop(cfg->phynode, "eee-broken-1000kx")) cfg->flags |= MIIF_FDT_EEE_BROKEN_1000KX; if (OF_hasprop(cfg->phynode, "eee-broken-10gkx4")) cfg->flags |= MIIF_FDT_EEE_BROKEN_10GKX4; if (OF_hasprop(cfg->phynode, "eee-broken-10gkr")) cfg->flags |= MIIF_FDT_EEE_BROKEN_10GKR; return (cfg); } static int miibus_fdt_probe(device_t dev) { device_t parent; parent = device_get_parent(dev); if (ofw_bus_get_node(parent) == -1) return (ENXIO); device_set_desc(dev, "OFW MII bus"); return (BUS_PROBE_DEFAULT); } static int miibus_fdt_attach(device_t dev) { struct mii_attach_args *ma; int i, error, nchildren; device_t parent, *children; phandle_t phy_node; parent = device_get_parent(dev); error = device_get_children(dev, &children, &nchildren); if (error != 0 || nchildren == 0) return (ENXIO); for (i = 0; i < nchildren; i++) { ma = device_get_ivars(children[i]); bzero(&ma->obd, sizeof(ma->obd)); phy_node = mii_fdt_lookup_phy(ofw_bus_get_node(parent), ma->mii_phyno); if (phy_node == -1) { device_printf(dev, "Warning: failed to find OFW node for PHY%d\n", ma->mii_phyno); continue; } error = ofw_bus_gen_setup_devinfo(&ma->obd, phy_node); if (error != 0) { device_printf(dev, "Warning: failed to setup OFW devinfo for PHY%d\n", ma->mii_phyno); continue; } /* * Setup interrupt resources. * Only a handful of PHYs support those, * so it's fine if we fail here. */ resource_list_init(&ma->rl); (void)ofw_bus_intr_to_rl(children[i], phy_node, &ma->rl, NULL); } free(children, M_TEMP); return (miibus_attach(dev)); } static struct resource_list * miibus_fdt_get_resource_list(device_t bus, device_t child) { struct mii_attach_args *ma; ma = device_get_ivars(child); if (ma->obd.obd_node == 0) return (NULL); return (&ma->rl); } static const struct ofw_bus_devinfo* miibus_fdt_get_devinfo(device_t bus, device_t child) { struct mii_attach_args *ma; ma = device_get_ivars(child); if (ma->obd.obd_node == 0) return (NULL); return (&ma->obd); } static device_method_t miibus_fdt_methods[] = { DEVMETHOD(device_probe, miibus_fdt_probe), DEVMETHOD(device_attach, miibus_fdt_attach), /* ofw_bus interface */ DEVMETHOD(ofw_bus_get_devinfo, miibus_fdt_get_devinfo), DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_release_resource, bus_generic_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), DEVMETHOD(bus_get_resource_list, miibus_fdt_get_resource_list), DEVMETHOD_END }; DEFINE_CLASS_1(miibus, miibus_fdt_driver, miibus_fdt_methods, sizeof(struct mii_data), miibus_driver);