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1 | /* |
2 | * drivers/net/phy/marvell.c | |
3 | * | |
4 | * Driver for Marvell PHYs | |
5 | * | |
6 | * Author: Andy Fleming | |
7 | * | |
8 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | */ | |
16 | #include <linux/config.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/sched.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/skbuff.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/version.h> | |
33 | #include <linux/mii.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/phy.h> | |
36 | ||
37 | #include <asm/io.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/uaccess.h> | |
40 | ||
41 | #define MII_M1011_IEVENT 0x13 | |
42 | #define MII_M1011_IEVENT_CLEAR 0x0000 | |
43 | ||
44 | #define MII_M1011_IMASK 0x12 | |
45 | #define MII_M1011_IMASK_INIT 0x6400 | |
46 | #define MII_M1011_IMASK_CLEAR 0x0000 | |
47 | ||
48 | MODULE_DESCRIPTION("Marvell PHY driver"); | |
49 | MODULE_AUTHOR("Andy Fleming"); | |
50 | MODULE_LICENSE("GPL"); | |
51 | ||
52 | static int marvell_ack_interrupt(struct phy_device *phydev) | |
53 | { | |
54 | int err; | |
55 | ||
56 | /* Clear the interrupts by reading the reg */ | |
57 | err = phy_read(phydev, MII_M1011_IEVENT); | |
58 | ||
59 | if (err < 0) | |
60 | return err; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | static int marvell_config_intr(struct phy_device *phydev) | |
66 | { | |
67 | int err; | |
68 | ||
69 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
70 | err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_INIT); | |
71 | else | |
72 | err = phy_write(phydev, MII_M1011_IMASK, MII_M1011_IMASK_CLEAR); | |
73 | ||
74 | return err; | |
75 | } | |
76 | ||
77 | static int marvell_config_aneg(struct phy_device *phydev) | |
78 | { | |
79 | int err; | |
80 | ||
81 | /* The Marvell PHY has an errata which requires | |
82 | * that certain registers get written in order | |
83 | * to restart autonegotiation */ | |
84 | err = phy_write(phydev, MII_BMCR, BMCR_RESET); | |
85 | ||
86 | if (err < 0) | |
87 | return err; | |
88 | ||
89 | err = phy_write(phydev, 0x1d, 0x1f); | |
90 | if (err < 0) | |
91 | return err; | |
92 | ||
93 | err = phy_write(phydev, 0x1e, 0x200c); | |
94 | if (err < 0) | |
95 | return err; | |
96 | ||
97 | err = phy_write(phydev, 0x1d, 0x5); | |
98 | if (err < 0) | |
99 | return err; | |
100 | ||
101 | err = phy_write(phydev, 0x1e, 0); | |
102 | if (err < 0) | |
103 | return err; | |
104 | ||
105 | err = phy_write(phydev, 0x1e, 0x100); | |
106 | if (err < 0) | |
107 | return err; | |
108 | ||
109 | ||
110 | err = genphy_config_aneg(phydev); | |
111 | ||
112 | return err; | |
113 | } | |
114 | ||
115 | ||
116 | static struct phy_driver m88e1101_driver = { | |
117 | .phy_id = 0x01410c00, | |
118 | .phy_id_mask = 0xffffff00, | |
119 | .name = "Marvell 88E1101", | |
120 | .features = PHY_GBIT_FEATURES, | |
121 | .flags = PHY_HAS_INTERRUPT, | |
122 | .config_aneg = &marvell_config_aneg, | |
123 | .read_status = &genphy_read_status, | |
124 | .ack_interrupt = &marvell_ack_interrupt, | |
125 | .config_intr = &marvell_config_intr, | |
126 | .driver = { .owner = THIS_MODULE,}, | |
127 | }; | |
128 | ||
129 | static int __init marvell_init(void) | |
130 | { | |
131 | return phy_driver_register(&m88e1101_driver); | |
132 | } | |
133 | ||
134 | static void __exit marvell_exit(void) | |
135 | { | |
136 | phy_driver_unregister(&m88e1101_driver); | |
137 | } | |
138 | ||
139 | module_init(marvell_init); | |
140 | module_exit(marvell_exit); |