arswitch_7240.c revision 235323 
1/*-
2 * Copyright (c) 2011-2012 Stefan Bethke.
3 * Copyright (c) 2012 Adrian Chadd.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/dev/etherswitch/arswitch/arswitch_7240.c 235323 2012-05-12 05:26:49Z adrian $
28 */
29
30#include <sys/param.h>
31#include <sys/bus.h>
32#include <sys/errno.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/socket.h>
36#include <sys/sockio.h>
37#include <sys/sysctl.h>
38#include <sys/systm.h>
39
40#include <net/if.h>
41#include <net/if_arp.h>
42#include <net/ethernet.h>
43#include <net/if_dl.h>
44#include <net/if_media.h>
45#include <net/if_types.h>
46
47#include <machine/bus.h>
48#include <dev/iicbus/iic.h>
49#include <dev/iicbus/iiconf.h>
50#include <dev/iicbus/iicbus.h>
51#include <dev/mii/mii.h>
52#include <dev/mii/miivar.h>
53#include <dev/etherswitch/mdio.h>
54
55#include <dev/etherswitch/etherswitch.h>
56
57#include <dev/etherswitch/arswitch/arswitchreg.h>
58#include <dev/etherswitch/arswitch/arswitchvar.h>
59#include <dev/etherswitch/arswitch/arswitch_reg.h>
60#include <dev/etherswitch/arswitch/arswitch_phy.h>	/* XXX for probe */
61#include <dev/etherswitch/arswitch/arswitch_7240.h>
62
63#include "mdio_if.h"
64#include "miibus_if.h"
65#include "etherswitch_if.h"
66
67/* XXX belongs in arswitch_7240_reg.h */
68
69#define	AR7240_REG_CPU_PORT		0x78
70#define		AR7240_MIRROR_PORT_MASK		0x000000f0
71#define		AR7240_MIRROR_PORT_S		4
72#define		AR7240_CPU_PORT_EN		0x00000100
73
74#define	AR7240_REG_TAG_PRIORITY		0x70
75
76/*
77 * AR7240 specific functions
78 */
79static int
80ar7240_hw_setup(struct arswitch_softc *sc)
81{
82
83	/* Enable CPU port; disable mirror port */
84	arswitch_writereg(sc->sc_dev, AR7240_REG_CPU_PORT,
85	    AR7240_CPU_PORT_EN |
86	    (15 << AR7240_MIRROR_PORT_S));
87
88	/*
89	 * Let things settle; probing PHY4 doesn't seem reliable
90	 * without a litle delay.
91	 */
92	DELAY(1000);
93
94	return (0);
95}
96
97/*
98 * Initialise other global values for the AR7240.
99 */
100static int
101ar7240_hw_global_setup(struct arswitch_softc *sc)
102{
103
104	/* Setup TAG priority mapping */
105	arswitch_writereg(sc->sc_dev, AR7240_REG_TAG_PRIORITY, 0xfa50);
106
107	/* XXX MTU */
108
109	/* XXX Service Tag */
110
111	return (0);
112}
113
114/*
115 * The AR7240 probes the same as the AR8216.
116 *
117 * However, the support is slightly different.
118 *
119 * So instead of checking the PHY revision or mask register contents,
120 * we simply fall back to a hint check.
121 */
122int
123ar7240_probe(device_t dev)
124{
125	int is_7240 = 0;
126
127	if (resource_int_value(device_get_name(dev), device_get_unit(dev),
128	    "is_7240", &is_7240) != 0)
129		return (ENXIO);
130
131	if (is_7240 == 0)
132		return (ENXIO);
133
134	return (0);
135}
136
137void
138ar7240_attach(struct arswitch_softc *sc)
139{
140
141	sc->hal.arswitch_hw_setup = ar7240_hw_setup;
142	sc->hal.arswitch_hw_global_setup = ar7240_hw_global_setup;
143}
144