aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/phy/broadcom.c
blob: 5b80358af65840926a1de33d4517e41396d6f835 (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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/*
 *	drivers/net/phy/broadcom.c
 *
 *	Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
 *	transceivers.
 *
 *	Copyright (c) 2006  Maciej W. Rozycki
 *
 *	Inspired by code written by Amy Fong.
 *
 *	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/module.h>
#include <linux/phy.h>

#define MII_BCM54XX_ECR		0x10	/* BCM54xx extended control register */
#define MII_BCM54XX_ECR_IM	0x1000	/* Interrupt mask */
#define MII_BCM54XX_ECR_IF	0x0800	/* Interrupt force */

#define MII_BCM54XX_ESR		0x11	/* BCM54xx extended status register */
#define MII_BCM54XX_ESR_IS	0x1000	/* Interrupt status */

#define MII_BCM54XX_ISR		0x1a	/* BCM54xx interrupt status register */
#define MII_BCM54XX_IMR		0x1b	/* BCM54xx interrupt mask register */
#define MII_BCM54XX_INT_CRCERR	0x0001	/* CRC error */
#define MII_BCM54XX_INT_LINK	0x0002	/* Link status changed */
#define MII_BCM54XX_INT_SPEED	0x0004	/* Link speed change */
#define MII_BCM54XX_INT_DUPLEX	0x0008	/* Duplex mode changed */
#define MII_BCM54XX_INT_LRS	0x0010	/* Local receiver status changed */
#define MII_BCM54XX_INT_RRS	0x0020	/* Remote receiver status changed */
#define MII_BCM54XX_INT_SSERR	0x0040	/* Scrambler synchronization error */
#define MII_BCM54XX_INT_UHCD	0x0080	/* Unsupported HCD negotiated */
#define MII_BCM54XX_INT_NHCD	0x0100	/* No HCD */
#define MII_BCM54XX_INT_NHCDL	0x0200	/* No HCD link */
#define MII_BCM54XX_INT_ANPR	0x0400	/* Auto-negotiation page received */
#define MII_BCM54XX_INT_LC	0x0800	/* All counters below 128 */
#define MII_BCM54XX_INT_HC	0x1000	/* Counter above 32768 */
#define MII_BCM54XX_INT_MDIX	0x2000	/* MDIX status change */
#define MII_BCM54XX_INT_PSERR	0x4000	/* Pair swap error */

MODULE_DESCRIPTION("Broadcom PHY driver");
MODULE_AUTHOR("Maciej W. Rozycki");
MODULE_LICENSE("GPL");

static int bcm54xx_config_init(struct phy_device *phydev)
{
	int reg, err;

	reg = phy_read(phydev, MII_BCM54XX_ECR);
	if (reg < 0)
		return reg;

	/* Mask interrupts globally.  */
	reg |= MII_BCM54XX_ECR_IM;
	err = phy_write(phydev, MII_BCM54XX_ECR, reg);
	if (err < 0)
		return err;

	/* Unmask events we are interested in.  */
	reg = ~(MII_BCM54XX_INT_DUPLEX |
		MII_BCM54XX_INT_SPEED |
		MII_BCM54XX_INT_LINK);
	err = phy_write(phydev, MII_BCM54XX_IMR, reg);
	if (err < 0)
		return err;
	return 0;
}

static int bcm54xx_ack_interrupt(struct phy_device *phydev)
{
	int reg;

	/* Clear pending interrupts.  */
	reg = phy_read(phydev, MII_BCM54XX_ISR);
	if (reg < 0)
		return reg;

	return 0;
}

static int bcm54xx_config_intr(struct phy_device *phydev)
{
	int reg, err;

	reg = phy_read(phydev, MII_BCM54XX_ECR);
	if (reg < 0)
		return reg;

	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
		reg &= ~MII_BCM54XX_ECR_IM;
	else
		reg |= MII_BCM54XX_ECR_IM;

	err = phy_write(phydev, MII_BCM54XX_ECR, reg);
	return err;
}

static struct phy_driver bcm5411_driver = {
	.phy_id		= 0x00206070,
	.phy_id_mask	= 0xfffffff0,
	.name		= "Broadcom BCM5411",
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= bcm54xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm54xx_ack_interrupt,
	.config_intr	= bcm54xx_config_intr,
	.driver 	= { .owner = THIS_MODULE },
};

static struct phy_driver bcm5421_driver = {
	.phy_id		= 0x002060e0,
	.phy_id_mask	= 0xfffffff0,
	.name		= "Broadcom BCM5421",
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= bcm54xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm54xx_ack_interrupt,
	.config_intr	= bcm54xx_config_intr,
	.driver 	= { .owner = THIS_MODULE },
};

static struct phy_driver bcm5461_driver = {
	.phy_id		= 0x002060c0,
	.phy_id_mask	= 0xfffffff0,
	.name		= "Broadcom BCM5461",
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= bcm54xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm54xx_ack_interrupt,
	.config_intr	= bcm54xx_config_intr,
	.driver 	= { .owner = THIS_MODULE },
};

static struct phy_driver bcm5482_driver = {
    .phy_id		= 0x0143bcb0,
	.phy_id_mask	= 0xfffffff0,
	.name		= "Broadcom BCM5482",
	.features	= PHY_GBIT_FEATURES,
	.flags		= PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
	.config_init	= bcm54xx_config_init,
	.config_aneg	= genphy_config_aneg,
	.read_status	= genphy_read_status,
	.ack_interrupt	= bcm54xx_ack_interrupt,
	.config_intr	= bcm54xx_config_intr,
	.driver 	= { .owner = THIS_MODULE },
};

static int __init broadcom_init(void)
{
	int ret;

	ret = phy_driver_register(&bcm5411_driver);
	if (ret)
		goto out_5411;
	ret = phy_driver_register(&bcm5421_driver);
	if (ret)
		goto out_5421;
	ret = phy_driver_register(&bcm5461_driver);
	if (ret)
		goto out_5461;
	ret = phy_driver_register(&bcm5482_driver);
	if (ret)
		goto out_5482;
	return ret;

out_5482:
	phy_driver_unregister(&bcm5461_driver);
out_5461:
	phy_driver_unregister(&bcm5421_driver);
out_5421:
	phy_driver_unregister(&bcm5411_driver);
out_5411:
	return ret;
}

static void __exit broadcom_exit(void)
{
	phy_driver_unregister(&bcm5482_driver);
	phy_driver_unregister(&bcm5461_driver);
	phy_driver_unregister(&bcm5421_driver);
	phy_driver_unregister(&bcm5411_driver);
}

module_init(broadcom_init);
module_exit(broadcom_exit);