1 /*
2 * drivers/net/phy/cicada.c
3 *
4 * Driver for Cicada 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/kernel.h>
17 #include <linux/string.h>
18 #include <linux/errno.h>
19 #include <linux/unistd.h>
20 #include <linux/slab.h>
21 #include <linux/interrupt.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/skbuff.h>
27 #include <linux/spinlock.h>
28 #include <linux/mm.h>
29 #include <linux/module.h>
30 #include <linux/mii.h>
31 #include <linux/ethtool.h>
32 #include <linux/phy.h>
33
34 #include <asm/io.h>
35 #include <asm/irq.h>
36 #include <asm/uaccess.h>
37
38 /* Cicada Extended Control Register 1 */
39 #define MII_CIS8201_EXT_CON1 0x17
40 #define MII_CIS8201_EXTCON1_INIT 0x0000
41
42 /* Cicada Interrupt Mask Register */
43 #define MII_CIS8201_IMASK 0x19
44 #define MII_CIS8201_IMASK_IEN 0x8000
45 #define MII_CIS8201_IMASK_SPEED 0x4000
46 #define MII_CIS8201_IMASK_LINK 0x2000
47 #define MII_CIS8201_IMASK_DUPLEX 0x1000
48 #define MII_CIS8201_IMASK_MASK 0xf000
49
50 /* Cicada Interrupt Status Register */
51 #define MII_CIS8201_ISTAT 0x1a
52 #define MII_CIS8201_ISTAT_STATUS 0x8000
53 #define MII_CIS8201_ISTAT_SPEED 0x4000
54 #define MII_CIS8201_ISTAT_LINK 0x2000
55 #define MII_CIS8201_ISTAT_DUPLEX 0x1000
56
57 /* Cicada Auxiliary Control/Status Register */
58 #define MII_CIS8201_AUX_CONSTAT 0x1c
59 #define MII_CIS8201_AUXCONSTAT_INIT 0x0004
60 #define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020
61 #define MII_CIS8201_AUXCONSTAT_SPEED 0x0018
62 #define MII_CIS8201_AUXCONSTAT_GBIT 0x0010
63 #define MII_CIS8201_AUXCONSTAT_100 0x0008
64
65 MODULE_DESCRIPTION("Cicadia PHY driver");
66 MODULE_AUTHOR("Andy Fleming");
67 MODULE_LICENSE("GPL");
68
69 static int cis820x_config_init(struct phy_device *phydev)
70 {
71 int err;
72
73 err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT,
74 MII_CIS8201_AUXCONSTAT_INIT);
75
76 if (err < 0)
77 return err;
78
79 err = phy_write(phydev, MII_CIS8201_EXT_CON1,
80 MII_CIS8201_EXTCON1_INIT);
81
82 return err;
83 }
84
85 static int cis820x_ack_interrupt(struct phy_device *phydev)
86 {
87 int err = phy_read(phydev, MII_CIS8201_ISTAT);
88
89 return (err < 0) ? err : 0;
90 }
91
92 static int cis820x_config_intr(struct phy_device *phydev)
93 {
94 int err;
95
96 if(phydev->interrupts == PHY_INTERRUPT_ENABLED)
97 err = phy_write(phydev, MII_CIS8201_IMASK,
98 MII_CIS8201_IMASK_MASK);
99 else
100 err = phy_write(phydev, MII_CIS8201_IMASK, 0);
101
102 return err;
103 }
104
105 /* Cicada 8201, a.k.a Vitesse VSC8201 */
106 static struct phy_driver cis8201_driver = {
107 .phy_id = 0x000fc410,
108 .name = "Cicada Cis8201",
109 .phy_id_mask = 0x000ffff0,
110 .features = PHY_GBIT_FEATURES,
111 .flags = PHY_HAS_INTERRUPT,
112 .config_init = &cis820x_config_init,
113 .config_aneg = &genphy_config_aneg,
114 .read_status = &genphy_read_status,
115 .ack_interrupt = &cis820x_ack_interrupt,
116 .config_intr = &cis820x_config_intr,
117 .driver = { .owner = THIS_MODULE,},
118 };
119
120 /* Cicada 8204 */
121 static struct phy_driver cis8204_driver = {
122 .phy_id = 0x000fc440,
123 .name = "Cicada Cis8204",
124 .phy_id_mask = 0x000fffc0,
125 .features = PHY_GBIT_FEATURES,
126 .flags = PHY_HAS_INTERRUPT,
127 .config_init = &cis820x_config_init,
128 .config_aneg = &genphy_config_aneg,
129 .read_status = &genphy_read_status,
130 .ack_interrupt = &cis820x_ack_interrupt,
131 .config_intr = &cis820x_config_intr,
132 .driver = { .owner = THIS_MODULE,},
133 };
134
135 static int __init cicada_init(void)
136 {
137 int ret;
138
139 ret = phy_driver_register(&cis8204_driver);
140 if (ret)
141 goto err1;
142
143 ret = phy_driver_register(&cis8201_driver);
144 if (ret)
145 goto err2;
146 return 0;
147
148 err2:
149 phy_driver_unregister(&cis8204_driver);
150 err1:
151 return ret;
152 }
153
154 static void __exit cicada_exit(void)
155 {
156 phy_driver_unregister(&cis8204_driver);
157 phy_driver_unregister(&cis8201_driver);
158 }
159
160 module_init(cicada_init);
161 module_exit(cicada_exit);
162
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