arswitch_7240.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011-2012 Stefan Bethke.
5 * Copyright (c) 2012 Adrian Chadd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/sys/dev/etherswitch/arswitch/arswitch_7240.c 330897 2018-03-14 03:19:51Z eadler $
30 */
31
32#include <sys/param.h>
33#include <sys/bus.h>
34#include <sys/errno.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/socket.h>
38#include <sys/sockio.h>
39#include <sys/sysctl.h>
40#include <sys/systm.h>
41
42#include <net/if.h>
43#include <net/if_arp.h>
44#include <net/ethernet.h>
45#include <net/if_dl.h>
46#include <net/if_media.h>
47#include <net/if_types.h>
48
49#include <machine/bus.h>
50#include <dev/iicbus/iic.h>
51#include <dev/iicbus/iiconf.h>
52#include <dev/iicbus/iicbus.h>
53#include <dev/mii/mii.h>
54#include <dev/mii/miivar.h>
55#include <dev/mdio/mdio.h>
56
57#include <dev/etherswitch/etherswitch.h>
58
59#include <dev/etherswitch/arswitch/arswitchreg.h>
60#include <dev/etherswitch/arswitch/arswitchvar.h>
61#include <dev/etherswitch/arswitch/arswitch_reg.h>
62#include <dev/etherswitch/arswitch/arswitch_phy.h>	/* XXX for probe */
63#include <dev/etherswitch/arswitch/arswitch_7240.h>
64
65#include "mdio_if.h"
66#include "miibus_if.h"
67#include "etherswitch_if.h"
68
69/*
70 * AR7240 specific functions
71 */
72static int
73ar7240_hw_setup(struct arswitch_softc *sc)
74{
75
76	return (0);
77}
78
79/*
80 * Initialise other global values for the AR7240.
81 */
82static int
83ar7240_hw_global_setup(struct arswitch_softc *sc)
84{
85
86	/* Enable CPU port; disable mirror port */
87	arswitch_writereg(sc->sc_dev, AR8X16_REG_CPU_PORT,
88	    AR8X16_CPU_PORT_EN | AR8X16_CPU_MIRROR_DIS);
89
90	/* Setup TAG priority mapping */
91	arswitch_writereg(sc->sc_dev, AR8X16_REG_TAG_PRIO, 0xfa50);
92
93	/* Enable broadcast frames transmitted to the CPU */
94	arswitch_writereg(sc->sc_dev, AR8X16_REG_FLOOD_MASK,
95	    AR8X16_FLOOD_MASK_BCAST_TO_CPU | 0x003f003f);
96
97	/* Setup MTU */
98	arswitch_modifyreg(sc->sc_dev, AR8X16_REG_GLOBAL_CTRL,
99	    AR7240_GLOBAL_CTRL_MTU_MASK,
100	    SM(1536, AR7240_GLOBAL_CTRL_MTU_MASK));
101
102	/* XXX ARP? Frame Age enable? */
103
104	/* Service Tag */
105	arswitch_modifyreg(sc->sc_dev, AR8X16_REG_SERVICE_TAG,
106	    AR8X16_SERVICE_TAG_MASK, 0);
107
108	return (0);
109}
110
111/*
112 * The AR7240 probes the same as the AR8216.
113 *
114 * However, the support is slightly different.
115 *
116 * So instead of checking the PHY revision or mask register contents,
117 * we simply fall back to a hint check.
118 */
119int
120ar7240_probe(device_t dev)
121{
122	int is_7240 = 0;
123
124	if (resource_int_value(device_get_name(dev), device_get_unit(dev),
125	    "is_7240", &is_7240) != 0)
126		return (ENXIO);
127
128	if (is_7240 == 0)
129		return (ENXIO);
130
131	return (0);
132}
133
134void
135ar7240_attach(struct arswitch_softc *sc)
136{
137
138	sc->hal.arswitch_hw_setup = ar7240_hw_setup;
139	sc->hal.arswitch_hw_global_setup = ar7240_hw_global_setup;
140
141	/* Set the switch vlan capabilities. */
142	sc->info.es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q |
143	    ETHERSWITCH_VLAN_PORT | ETHERSWITCH_VLAN_DOUBLE_TAG;
144	sc->info.es_nvlangroups = AR8X16_MAX_VLANS;
145}
146