aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/phy/cicada.c
blob: 1a325d63756b9cac7230080073fc02a2f38518ec (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * drivers/net/phy/cicada.c
 *
 * Driver for Cicada PHYs
 *
 * Author: Andy Fleming
 *
 * Copyright (c) 2004 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 */
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/unistd.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>

/* Cicada Extended Control Register 1 */
#define MII_CIS8201_EXT_CON1           0x17
#define MII_CIS8201_EXTCON1_INIT       0x0000

/* Cicada Interrupt Mask Register */
#define MII_CIS8201_IMASK		0x19
#define MII_CIS8201_IMASK_IEN		0x8000
#define MII_CIS8201_IMASK_SPEED	0x4000
#define MII_CIS8201_IMASK_LINK		0x2000
#define MII_CIS8201_IMASK_DUPLEX	0x1000
#define MII_CIS8201_IMASK_MASK		0xf000

/* Cicada Interrupt Status Register */
#define MII_CIS8201_ISTAT		0x1a
#define MII_CIS8201_ISTAT_STATUS	0x8000
#define MII_CIS8201_ISTAT_SPEED	0x4000
#define MII_CIS8201_ISTAT_LINK		0x2000
#define MII_CIS8201_ISTAT_DUPLEX	0x1000

/* Cicada Auxiliary Control/Status Register */
#define MII_CIS8201_AUX_CONSTAT        0x1c
#define MII_CIS8201_AUXCONSTAT_INIT    0x0004
#define MII_CIS8201_AUXCONSTAT_DUPLEX  0x0020
#define MII_CIS8201_AUXCONSTAT_SPEED   0x0018
#define MII_CIS8201_AUXCONSTAT_GBIT    0x0010
#define MII_CIS8201_AUXCONSTAT_100     0x0008

MODULE_DESCRIPTION("Cicadia PHY driver");
MODULE_AUTHOR("Andy Fleming");
MODULE_LICENSE("GPL");

static int cis820x_config_init(struct phy_device *phydev)
{
	int err;

	err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT,
			MII_CIS8201_AUXCONSTAT_INIT);

	if (err < 0)
		return err;

	err = phy_write(phydev, MII_CIS8201_EXT_CON1,
			MII_CIS8201_EXTCON1_INIT);

	return err;
}

static int cis820x_ack_interrupt(struct phy_device *phydev)
{
	int err = phy_read(phydev, MII_CIS8201_ISTAT);

	return (err < 0) ? err : 0;
}

static int cis820x_config_intr(struct phy_device *phydev)
{
	int err;

	if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
		err = phy_write(phydev, MII_CIS8201_IMASK, 
				MII_CIS8201_IMASK_MASK);
	else
		err = phy_write(phydev, MII_CIS8201_IMASK, 0);

	return err;
}

/* Cicada 8201, a.k.a Vitesse VSC8201 */
static struct phy_driver cis8201_driver = {
	.phy_id		= 0x000fc410,
	.name		= "Cicada Cis8201",
	.phy_id_mask	= 0x000ffff0,
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_INTERRUPT,
	.config_init	= &cis820x_config_init,
	.config_aneg	= &genphy_config_aneg,
	.read_status	= &genphy_read_status,
	.ack_interrupt	= &cis820x_ack_interrupt,
	.config_intr	= &cis820x_config_intr,
	.driver 	= { .owner = THIS_MODULE,},
};

/* Cicada 8204 */
static struct phy_driver cis8204_driver = {
	.phy_id		= 0x000fc440,
	.name		= "Cicada Cis8204",
	.phy_id_mask	= 0x000fffc0,
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_INTERRUPT,
	.config_init	= &cis820x_config_init,
	.config_aneg	= &genphy_config_aneg,
	.read_status	= &genphy_read_status,
	.ack_interrupt	= &cis820x_ack_interrupt,
	.config_intr	= &cis820x_config_intr,
	.driver 	= { .owner = THIS_MODULE,},
};

static int __init cicada_init(void)
{
	int ret;

	ret = phy_driver_register(&cis8204_driver);
	if (ret)
		goto err1;

	ret = phy_driver_register(&cis8201_driver);
	if (ret)
		goto err2;
	return 0;

err2:
	phy_driver_unregister(&cis8204_driver);
err1:
	return ret;
}

static void __exit cicada_exit(void)
{
	phy_driver_unregister(&cis8204_driver);
	phy_driver_unregister(&cis8201_driver);
}

module_init(cicada_init);
module_exit(cicada_exit);

static struct mdio_device_id cicada_tbl[] = {
	{ 0x000fc410, 0x000ffff0 },
	{ 0x000fc440, 0x000fffc0 },
	{ }
};

MODULE_DEVICE_TABLE(mdio, cicada_tbl);