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Maciej W. Rozyckic4b41c92006-10-03 16:18:13 +01001/*
2 * drivers/net/phy/broadcom.c
3 *
4 * Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
5 * transceivers.
6 *
7 * Copyright (c) 2006 Maciej W. Rozycki
8 *
9 * Inspired by code written by Amy Fong.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16
17#include <linux/module.h>
18#include <linux/phy.h>
19
20#define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */
21#define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */
22#define MII_BCM54XX_ECR_IF 0x0800 /* Interrupt force */
23
24#define MII_BCM54XX_ESR 0x11 /* BCM54xx extended status register */
25#define MII_BCM54XX_ESR_IS 0x1000 /* Interrupt status */
26
27#define MII_BCM54XX_ISR 0x1a /* BCM54xx interrupt status register */
28#define MII_BCM54XX_IMR 0x1b /* BCM54xx interrupt mask register */
29#define MII_BCM54XX_INT_CRCERR 0x0001 /* CRC error */
30#define MII_BCM54XX_INT_LINK 0x0002 /* Link status changed */
31#define MII_BCM54XX_INT_SPEED 0x0004 /* Link speed change */
32#define MII_BCM54XX_INT_DUPLEX 0x0008 /* Duplex mode changed */
33#define MII_BCM54XX_INT_LRS 0x0010 /* Local receiver status changed */
34#define MII_BCM54XX_INT_RRS 0x0020 /* Remote receiver status changed */
35#define MII_BCM54XX_INT_SSERR 0x0040 /* Scrambler synchronization error */
36#define MII_BCM54XX_INT_UHCD 0x0080 /* Unsupported HCD negotiated */
37#define MII_BCM54XX_INT_NHCD 0x0100 /* No HCD */
38#define MII_BCM54XX_INT_NHCDL 0x0200 /* No HCD link */
39#define MII_BCM54XX_INT_ANPR 0x0400 /* Auto-negotiation page received */
40#define MII_BCM54XX_INT_LC 0x0800 /* All counters below 128 */
41#define MII_BCM54XX_INT_HC 0x1000 /* Counter above 32768 */
42#define MII_BCM54XX_INT_MDIX 0x2000 /* MDIX status change */
43#define MII_BCM54XX_INT_PSERR 0x4000 /* Pair swap error */
44
45MODULE_DESCRIPTION("Broadcom PHY driver");
46MODULE_AUTHOR("Maciej W. Rozycki");
47MODULE_LICENSE("GPL");
48
49static int bcm54xx_config_init(struct phy_device *phydev)
50{
51 int reg, err;
52
53 reg = phy_read(phydev, MII_BCM54XX_ECR);
54 if (reg < 0)
55 return reg;
56
57 /* Mask interrupts globally. */
58 reg |= MII_BCM54XX_ECR_IM;
59 err = phy_write(phydev, MII_BCM54XX_ECR, reg);
60 if (err < 0)
61 return err;
62
63 /* Unmask events we are interested in. */
64 reg = ~(MII_BCM54XX_INT_DUPLEX |
65 MII_BCM54XX_INT_SPEED |
66 MII_BCM54XX_INT_LINK);
67 err = phy_write(phydev, MII_BCM54XX_IMR, reg);
68 if (err < 0)
69 return err;
70 return 0;
71}
72
73static int bcm54xx_ack_interrupt(struct phy_device *phydev)
74{
75 int reg;
76
77 /* Clear pending interrupts. */
78 reg = phy_read(phydev, MII_BCM54XX_ISR);
79 if (reg < 0)
80 return reg;
81
82 return 0;
83}
84
85static int bcm54xx_config_intr(struct phy_device *phydev)
86{
87 int reg, err;
88
89 reg = phy_read(phydev, MII_BCM54XX_ECR);
90 if (reg < 0)
91 return reg;
92
93 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
94 reg &= ~MII_BCM54XX_ECR_IM;
95 else
96 reg |= MII_BCM54XX_ECR_IM;
97
98 err = phy_write(phydev, MII_BCM54XX_ECR, reg);
99 return err;
100}
101
102static struct phy_driver bcm5411_driver = {
103 .phy_id = 0x00206070,
104 .phy_id_mask = 0xfffffff0,
105 .name = "Broadcom BCM5411",
106 .features = PHY_GBIT_FEATURES,
107 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
108 .config_init = bcm54xx_config_init,
109 .config_aneg = genphy_config_aneg,
110 .read_status = genphy_read_status,
111 .ack_interrupt = bcm54xx_ack_interrupt,
112 .config_intr = bcm54xx_config_intr,
113 .driver = { .owner = THIS_MODULE },
114};
115
116static struct phy_driver bcm5421_driver = {
117 .phy_id = 0x002060e0,
118 .phy_id_mask = 0xfffffff0,
119 .name = "Broadcom BCM5421",
120 .features = PHY_GBIT_FEATURES,
121 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
122 .config_init = bcm54xx_config_init,
123 .config_aneg = genphy_config_aneg,
124 .read_status = genphy_read_status,
125 .ack_interrupt = bcm54xx_ack_interrupt,
126 .config_intr = bcm54xx_config_intr,
127 .driver = { .owner = THIS_MODULE },
128};
129
130static struct phy_driver bcm5461_driver = {
131 .phy_id = 0x002060c0,
132 .phy_id_mask = 0xfffffff0,
133 .name = "Broadcom BCM5461",
134 .features = PHY_GBIT_FEATURES,
135 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
136 .config_init = bcm54xx_config_init,
137 .config_aneg = genphy_config_aneg,
138 .read_status = genphy_read_status,
139 .ack_interrupt = bcm54xx_ack_interrupt,
140 .config_intr = bcm54xx_config_intr,
141 .driver = { .owner = THIS_MODULE },
142};
143
Nate Case03157ac2008-01-29 10:19:00 -0600144static struct phy_driver bcm5482_driver = {
145 .phy_id = 0x0143bcb0,
146 .phy_id_mask = 0xfffffff0,
147 .name = "Broadcom BCM5482",
148 .features = PHY_GBIT_FEATURES,
149 .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
150 .config_init = bcm54xx_config_init,
151 .config_aneg = genphy_config_aneg,
152 .read_status = genphy_read_status,
153 .ack_interrupt = bcm54xx_ack_interrupt,
154 .config_intr = bcm54xx_config_intr,
155 .driver = { .owner = THIS_MODULE },
156};
157
Maciej W. Rozyckic4b41c92006-10-03 16:18:13 +0100158static int __init broadcom_init(void)
159{
160 int ret;
161
162 ret = phy_driver_register(&bcm5411_driver);
163 if (ret)
164 goto out_5411;
165 ret = phy_driver_register(&bcm5421_driver);
166 if (ret)
167 goto out_5421;
168 ret = phy_driver_register(&bcm5461_driver);
169 if (ret)
170 goto out_5461;
Nate Case03157ac2008-01-29 10:19:00 -0600171 ret = phy_driver_register(&bcm5482_driver);
172 if (ret)
173 goto out_5482;
Maciej W. Rozyckic4b41c92006-10-03 16:18:13 +0100174 return ret;
175
Nate Case03157ac2008-01-29 10:19:00 -0600176out_5482:
177 phy_driver_unregister(&bcm5461_driver);
Maciej W. Rozyckic4b41c92006-10-03 16:18:13 +0100178out_5461:
179 phy_driver_unregister(&bcm5421_driver);
180out_5421:
181 phy_driver_unregister(&bcm5411_driver);
182out_5411:
183 return ret;
184}
185
186static void __exit broadcom_exit(void)
187{
Nate Case03157ac2008-01-29 10:19:00 -0600188 phy_driver_unregister(&bcm5482_driver);
Maciej W. Rozyckic4b41c92006-10-03 16:18:13 +0100189 phy_driver_unregister(&bcm5461_driver);
190 phy_driver_unregister(&bcm5421_driver);
191 phy_driver_unregister(&bcm5411_driver);
192}
193
194module_init(broadcom_init);
195module_exit(broadcom_exit);