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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/*
* Atheros AR71xx built-in ethernet mac driver
*
* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Based on Atheros' AG7100 driver
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include "ag71xx.h"
static void ag71xx_phy_link_adjust(struct net_device *dev)
{
struct ag71xx *ag = netdev_priv(dev);
struct phy_device *phydev = ag->phy_dev;
unsigned long flags;
int status_change = 0;
spin_lock_irqsave(&ag->lock, flags);
if (phydev->link) {
if (ag->duplex != phydev->duplex
|| ag->speed != phydev->speed) {
status_change = 1;
}
}
if (phydev->link != ag->link)
status_change = 1;
ag->link = phydev->link;
ag->duplex = phydev->duplex;
ag->speed = phydev->speed;
if (status_change)
ag71xx_link_adjust(ag);
spin_unlock_irqrestore(&ag->lock, flags);
}
void ag71xx_phy_start(struct ag71xx *ag)
{
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
if (ag->phy_dev) {
phy_start(ag->phy_dev);
} else if (pdata->switch_data) {
ag71xx_ar7240_start(ag);
} else {
ag->link = 1;
ag71xx_link_adjust(ag);
}
}
void ag71xx_phy_stop(struct ag71xx *ag)
{
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
unsigned long flags;
if (ag->phy_dev)
phy_stop(ag->phy_dev);
else if (pdata->switch_data)
ag71xx_ar7240_stop(ag);
spin_lock_irqsave(&ag->lock, flags);
if (ag->link) {
ag->link = 0;
ag71xx_link_adjust(ag);
}
spin_unlock_irqrestore(&ag->lock, flags);
}
static int ag71xx_phy_connect_fixed(struct ag71xx *ag)
{
struct net_device *dev = ag->dev;
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
int ret = 0;
/* use fixed settings */
switch (pdata->speed) {
case SPEED_10:
case SPEED_100:
case SPEED_1000:
break;
default:
netdev_err(dev, "invalid speed specified\n");
ret = -EINVAL;
break;
}
netdev_dbg(dev, "using fixed link parameters\n");
ag->duplex = pdata->duplex;
ag->speed = pdata->speed;
return ret;
}
static int ag71xx_phy_connect_multi(struct ag71xx *ag)
{
struct net_device *dev = ag->dev;
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
struct phy_device *phydev = NULL;
int phy_addr;
int ret = 0;
for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
if (!(pdata->phy_mask & (1 << phy_addr)))
continue;
if (ag->mii_bus->phy_map[phy_addr] == NULL)
continue;
DBG("%s: PHY found at %s, uid=%08x\n",
dev->name,
dev_name(&ag->mii_bus->phy_map[phy_addr]->dev),
ag->mii_bus->phy_map[phy_addr]->phy_id);
if (phydev == NULL)
phydev = ag->mii_bus->phy_map[phy_addr];
}
if (!phydev) {
netdev_err(dev, "no PHY found with phy_mask=%08x\n",
pdata->phy_mask);
return -ENODEV;
}
ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev),
&ag71xx_phy_link_adjust, 0,
pdata->phy_if_mode);
if (IS_ERR(ag->phy_dev)) {
netdev_err(dev, "could not connect to PHY at %s\n",
dev_name(&phydev->dev));
return PTR_ERR(ag->phy_dev);
}
/* mask with MAC supported features */
if (pdata->has_gbit)
phydev->supported &= PHY_GBIT_FEATURES;
else
phydev->supported &= PHY_BASIC_FEATURES;
phydev->advertising = phydev->supported;
netdev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n",
dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name);
ag->link = 0;
ag->speed = 0;
ag->duplex = -1;
return ret;
}
static int dev_is_class(struct device *dev, void *class)
{
if (dev->class != NULL && !strcmp(dev->class->name, class))
return 1;
return 0;
}
static struct device *dev_find_class(struct device *parent, char *class)
{
if (dev_is_class(parent, class)) {
get_device(parent);
return parent;
}
return device_find_child(parent, class, dev_is_class);
}
static struct mii_bus *dev_to_mii_bus(struct device *dev)
{
struct device *d;
d = dev_find_class(dev, "mdio_bus");
if (d != NULL) {
struct mii_bus *bus;
bus = to_mii_bus(d);
put_device(d);
return bus;
}
return NULL;
}
int __devinit ag71xx_phy_connect(struct ag71xx *ag)
{
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
if (pdata->mii_bus_dev == NULL ||
pdata->mii_bus_dev->bus == NULL )
return ag71xx_phy_connect_fixed(ag);
ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
if (ag->mii_bus == NULL) {
netdev_err(ag->dev, "unable to find MII bus on device '%s'\n",
dev_name(pdata->mii_bus_dev));
return -ENODEV;
}
/* Reset the mdio bus explicitly */
if (ag->mii_bus->reset) {
mutex_lock(&ag->mii_bus->mdio_lock);
ag->mii_bus->reset(ag->mii_bus);
mutex_unlock(&ag->mii_bus->mdio_lock);
}
if (pdata->switch_data)
return ag71xx_ar7240_init(ag);
if (pdata->phy_mask)
return ag71xx_phy_connect_multi(ag);
return ag71xx_phy_connect_fixed(ag);
}
void ag71xx_phy_disconnect(struct ag71xx *ag)
{
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
if (pdata->switch_data)
ag71xx_ar7240_cleanup(ag);
else if (ag->phy_dev)
phy_disconnect(ag->phy_dev);
}
|
