svn commit: r319815 - in head/sys: conf dev/mii
Ian Lepore
ian at FreeBSD.org
Sun Jun 11 00:16:23 UTC 2017
Author: ian
Date: Sun Jun 11 00:16:21 2017
New Revision: 319815
URL: https://svnweb.freebsd.org/changeset/base/319815
Log:
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.
Added:
head/sys/dev/mii/mii_fdt.c (contents, props changed)
head/sys/dev/mii/mii_fdt.h (contents, props changed)
Modified:
head/sys/conf/files
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Sat Jun 10 23:55:13 2017 (r319814)
+++ head/sys/conf/files Sun Jun 11 00:16:21 2017 (r319815)
@@ -2204,6 +2204,7 @@ dev/mii/micphy.c optional miibus fdt | micphy fdt
dev/mii/mii.c optional miibus | mii
dev/mii/mii_bitbang.c optional miibus | mii_bitbang
dev/mii/mii_physubr.c optional miibus | mii
+dev/mii/mii_fdt.c optional miibus fdt | mii fdt
dev/mii/miibus_if.m optional miibus | mii
dev/mii/mlphy.c optional miibus | mlphy
dev/mii/nsgphy.c optional miibus | nsgphy
Added: head/sys/dev/mii/mii_fdt.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/mii/mii_fdt.c Sun Jun 11 00:16:21 2017 (r319815)
@@ -0,0 +1,200 @@
+/*-
+ * Copyright (c) 2017 Ian Lepore <ian at freebsd.org>
+ * 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Utility functions for PHY drivers on systems configured using FDT data.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/socket.h>
+#include <sys/bus.h>
+#include <sys/malloc.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include <dev/mii/mii_fdt.h>
+
+/*
+ * 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);
+}
+
+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)
+{
+ mii_fdt_phy_config_t *cfg;
+ device_t miibus, macdev;
+ pcell_t val;
+
+ 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.
+ */
+ if ((cfg->phynode = mii_fdt_get_phynode(cfg->macnode)) == -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);
+}
Added: head/sys/dev/mii/mii_fdt.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/mii/mii_fdt.h Sun Jun 11 00:16:21 2017 (r319815)
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 2017 Ian Lepore <ian at freebsd.org>
+ * 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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _DEV_MII_FDT_H_
+#define _DEV_MII_FDT_H_
+
+/*
+ * Common FDT config for a PHY, as documented in the devicetree bindings
+ * documents ethernet.txt and phy.txt. Boolean properties are represented as
+ * bits in the flags member.
+ */
+struct mii_fdt_phy_config {
+ phandle_t macnode; /* Node (not xref) of parent MAC */
+ phandle_t phynode; /* Node (not xref) of PHY */
+ mii_contype_t con_type; /* MAC<->PHY connection type */
+ u_int max_speed; /* Mbits/sec, 0 = not specified */
+ uint32_t flags; /* MIIF_FDT_xxx boolean properties */
+};
+typedef struct mii_fdt_phy_config mii_fdt_phy_config_t;
+
+/* PHY config flags. */
+#define MIIF_FDT_COMPAT_CLAUSE45 0x0001
+#define MIIF_FDT_BROKEN_TURNAROUND 0x0002
+#define MIIF_FDT_LANE_SWAP 0x0004
+#define MIIF_FDT_NO_LANE_SWAP 0x0008
+#define MIIF_FDT_EEE_BROKEN_100TX 0x0010
+#define MIIF_FDT_EEE_BROKEN_1000T 0x0020
+#define MIIF_FDT_EEE_BROKEN_10GT 0x0040
+#define MIIF_FDT_EEE_BROKEN_1000KX 0x0080
+#define MIIF_FDT_EEE_BROKEN_10GKX4 0x0100
+#define MIIF_FDT_EEE_BROKEN_10GKR 0x0200
+
+/*
+ * Convert between mii_contype enums and devicetree property strings.
+ */
+const char *mii_fdt_contype_to_name(mii_contype_t contype);
+mii_contype_t mii_fdt_contype_from_name(const char *name);
+
+/* Get the connection type from the given MAC node. */
+mii_contype_t mii_fdt_get_contype(phandle_t macnode);
+
+/*
+ * Get/free the config for the given PHY device.
+ */
+void mii_fdt_free_config(struct mii_fdt_phy_config *cfg);
+mii_fdt_phy_config_t *mii_fdt_get_config(device_t phydev);
+
+#endif
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