Add some utility functions to help a PHY driver on an FDT-configured
system retrieve its config data from the fdt data. The properties that are common to all phys are decoded and returned in a structure. The fdt node handles for the mac and phy devices are also returned in the config data struct, so a driver can easily obtain additional hardware-specific config values from the fdt data.
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@ -2204,6 +2204,7 @@ dev/mii/micphy.c optional miibus fdt | micphy fdt
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dev/mii/mii.c optional miibus | mii
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dev/mii/mii_bitbang.c optional miibus | mii_bitbang
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dev/mii/mii_physubr.c optional miibus | mii
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dev/mii/mii_fdt.c optional miibus fdt | mii fdt
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dev/mii/miibus_if.m optional miibus | mii
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dev/mii/mlphy.c optional miibus | mlphy
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dev/mii/nsgphy.c optional miibus | nsgphy
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200
sys/dev/mii/mii_fdt.c
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200
sys/dev/mii/mii_fdt.c
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@ -0,0 +1,200 @@
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/*-
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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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* Utility functions for PHY drivers on systems configured using FDT data.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.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/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.h>
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#include <dev/mii/miivar.h>
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#include <dev/mii/mii_fdt.h>
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/*
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* Table to translate MII_CONTYPE_xxxx constants to/from devicetree strings.
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* We explicitly associate the enum values with the strings in a table to avoid
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* relying on this list being sorted in the same order as the enum in miivar.h,
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* and to avoid problems if the enum gains new types that aren't in the FDT
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* data. However, the "unknown" entry must be first because it is referenced
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* using subscript 0 in mii_fdt_contype_to_name().
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*/
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static struct contype_names {
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mii_contype_t type;
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const char *name;
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} fdt_contype_names[] = {
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{MII_CONTYPE_UNKNOWN, "unknown"},
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{MII_CONTYPE_MII, "mii"},
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{MII_CONTYPE_GMII, "gmii"},
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{MII_CONTYPE_SGMII, "sgmii"},
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{MII_CONTYPE_QSGMII, "qsgmii"},
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{MII_CONTYPE_TBI, "tbi"},
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{MII_CONTYPE_REVMII, "rev-mii"},
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{MII_CONTYPE_RMII, "rmii"},
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{MII_CONTYPE_RGMII, "rgmii"},
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{MII_CONTYPE_RGMII_ID, "rgmii-id"},
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{MII_CONTYPE_RGMII_RXID, "rgmii-rxid"},
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{MII_CONTYPE_RGMII_TXID, "rgmii-txid"},
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{MII_CONTYPE_RTBI, "rtbi"},
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{MII_CONTYPE_SMII, "smii"},
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{MII_CONTYPE_XGMII, "xgmii"},
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{MII_CONTYPE_TRGMII, "trgmii"},
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{MII_CONTYPE_2000BX, "2000base-x"},
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{MII_CONTYPE_2500BX, "2500base-x"},
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{MII_CONTYPE_RXAUI, "rxaui"},
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};
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static phandle_t
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mii_fdt_get_phynode(phandle_t macnode)
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{
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static const char *props[] = {
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"phy-handle", "phy", "phy-device"
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};
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pcell_t xref;
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u_int i;
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for (i = 0; i < nitems(props); ++i) {
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if (OF_getencprop(macnode, props[i], &xref, sizeof(xref)) > 0)
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return (OF_node_from_xref(xref));
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}
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return (-1);
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}
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mii_contype_t
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mii_fdt_contype_from_name(const char *name)
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{
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u_int i;
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for (i = 0; i < nitems(fdt_contype_names); ++i) {
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if (strcmp(name, fdt_contype_names[i].name) == 0)
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return (fdt_contype_names[i].type);
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}
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return (MII_CONTYPE_UNKNOWN);
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}
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const char *
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mii_fdt_contype_to_name(mii_contype_t contype)
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{
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u_int i;
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for (i = 0; i < nitems(fdt_contype_names); ++i) {
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if (contype == fdt_contype_names[i].type)
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return (fdt_contype_names[i].name);
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}
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return (fdt_contype_names[0].name);
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}
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mii_contype_t
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mii_fdt_get_contype(phandle_t macnode)
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{
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char val[32];
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if (OF_getprop(macnode, "phy-mode", val, sizeof(val)) <= 0 &&
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OF_getprop(macnode, "phy-connection-type", val, sizeof(val)) <= 0) {
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return (MII_CONTYPE_UNKNOWN);
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}
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return (mii_fdt_contype_from_name(val));
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}
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void
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mii_fdt_free_config(struct mii_fdt_phy_config *cfg)
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{
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free(cfg, M_OFWPROP);
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}
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mii_fdt_phy_config_t *
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mii_fdt_get_config(device_t phydev)
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{
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mii_fdt_phy_config_t *cfg;
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device_t miibus, macdev;
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pcell_t val;
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miibus = device_get_parent(phydev);
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macdev = device_get_parent(miibus);
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cfg = malloc(sizeof(*cfg), M_OFWPROP, M_ZERO | M_WAITOK);
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/*
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* If we can't find our parent MAC's node, there's nothing more we can
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* fill in; cfg is already full of zero/default values, return it.
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*/
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if ((cfg->macnode = ofw_bus_get_node(macdev)) == -1)
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return (cfg);
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cfg->con_type = mii_fdt_get_contype(cfg->macnode);
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/*
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* If we can't find our own PHY node, there's nothing more we can fill
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* in, just return what we've got.
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*/
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if ((cfg->phynode = mii_fdt_get_phynode(cfg->macnode)) == -1)
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return (cfg);
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if (OF_getencprop(cfg->phynode, "max-speed", &val, sizeof(val)) > 0)
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cfg->max_speed = val;
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if (ofw_bus_node_is_compatible(cfg->phynode,
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"ethernet-phy-ieee802.3-c45"))
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cfg->flags |= MIIF_FDT_COMPAT_CLAUSE45;
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if (OF_hasprop(cfg->phynode, "broken-turn-around"))
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cfg->flags |= MIIF_FDT_BROKEN_TURNAROUND;
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if (OF_hasprop(cfg->phynode, "enet-phy-lane-swap"))
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cfg->flags |= MIIF_FDT_LANE_SWAP;
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if (OF_hasprop(cfg->phynode, "enet-phy-lane-no-swap"))
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cfg->flags |= MIIF_FDT_NO_LANE_SWAP;
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if (OF_hasprop(cfg->phynode, "eee-broken-100tx"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_100TX;
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if (OF_hasprop(cfg->phynode, "eee-broken-1000t"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_1000T;
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if (OF_hasprop(cfg->phynode, "eee-broken-10gt"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_10GT;
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if (OF_hasprop(cfg->phynode, "eee-broken-1000kx"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_1000KX;
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if (OF_hasprop(cfg->phynode, "eee-broken-10gkx4"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_10GKX4;
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if (OF_hasprop(cfg->phynode, "eee-broken-10gkr"))
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cfg->flags |= MIIF_FDT_EEE_BROKEN_10GKR;
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return (cfg);
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}
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75
sys/dev/mii/mii_fdt.h
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75
sys/dev/mii/mii_fdt.h
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@ -0,0 +1,75 @@
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/*-
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_MII_FDT_H_
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#define _DEV_MII_FDT_H_
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/*
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* Common FDT config for a PHY, as documented in the devicetree bindings
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* documents ethernet.txt and phy.txt. Boolean properties are represented as
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* bits in the flags member.
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*/
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struct mii_fdt_phy_config {
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phandle_t macnode; /* Node (not xref) of parent MAC */
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phandle_t phynode; /* Node (not xref) of PHY */
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mii_contype_t con_type; /* MAC<->PHY connection type */
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u_int max_speed; /* Mbits/sec, 0 = not specified */
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uint32_t flags; /* MIIF_FDT_xxx boolean properties */
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};
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typedef struct mii_fdt_phy_config mii_fdt_phy_config_t;
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/* PHY config flags. */
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#define MIIF_FDT_COMPAT_CLAUSE45 0x0001
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#define MIIF_FDT_BROKEN_TURNAROUND 0x0002
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#define MIIF_FDT_LANE_SWAP 0x0004
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#define MIIF_FDT_NO_LANE_SWAP 0x0008
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#define MIIF_FDT_EEE_BROKEN_100TX 0x0010
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#define MIIF_FDT_EEE_BROKEN_1000T 0x0020
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#define MIIF_FDT_EEE_BROKEN_10GT 0x0040
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#define MIIF_FDT_EEE_BROKEN_1000KX 0x0080
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#define MIIF_FDT_EEE_BROKEN_10GKX4 0x0100
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#define MIIF_FDT_EEE_BROKEN_10GKR 0x0200
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/*
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* Convert between mii_contype enums and devicetree property strings.
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*/
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const char *mii_fdt_contype_to_name(mii_contype_t contype);
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mii_contype_t mii_fdt_contype_from_name(const char *name);
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/* Get the connection type from the given MAC node. */
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mii_contype_t mii_fdt_get_contype(phandle_t macnode);
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/*
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* Get/free the config for the given PHY device.
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*/
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void mii_fdt_free_config(struct mii_fdt_phy_config *cfg);
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mii_fdt_phy_config_t *mii_fdt_get_config(device_t phydev);
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#endif
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