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
|
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/usb/usbnet.h>
#include <linux/usb/r8152.h>
#define OCP_BASE 0xe86c
static int pla_read_word(struct usbnet *dev, u16 index)
{
u16 byen = BYTE_EN_WORD;
u8 shift = index & 2;
__le32 tmp;
int ret;
if (shift)
byen <<= shift;
index &= ~3;
ret = usbnet_read_cmd(dev, RTL8152_REQ_GET_REGS, RTL8152_REQT_READ, index,
MCU_TYPE_PLA | byen, &tmp, sizeof(tmp));
if (ret < 0)
goto out;
ret = __le32_to_cpu(tmp);
ret >>= (shift * 8);
ret &= 0xffff;
out:
return ret;
}
static int pla_write_word(struct usbnet *dev, u16 index, u32 data)
{
u32 mask = 0xffff;
u16 byen = BYTE_EN_WORD;
u8 shift = index & 2;
__le32 tmp;
int ret;
data &= mask;
if (shift) {
byen <<= shift;
mask <<= (shift * 8);
data <<= (shift * 8);
}
index &= ~3;
ret = usbnet_read_cmd(dev, RTL8152_REQ_GET_REGS, RTL8152_REQT_READ, index,
MCU_TYPE_PLA | byen, &tmp, sizeof(tmp));
if (ret < 0)
goto out;
data |= __le32_to_cpu(tmp) & ~mask;
tmp = __cpu_to_le32(data);
ret = usbnet_write_cmd(dev, RTL8152_REQ_SET_REGS, RTL8152_REQT_WRITE, index,
MCU_TYPE_PLA | byen, &tmp, sizeof(tmp));
out:
return ret;
}
static int r8153_ecm_mdio_read(struct net_device *netdev, int phy_id, int reg)
{
struct usbnet *dev = netdev_priv(netdev);
int ret;
ret = pla_write_word(dev, OCP_BASE, 0xa000);
if (ret < 0)
goto out;
ret = pla_read_word(dev, 0xb400 + reg * 2);
out:
return ret;
}
static void r8153_ecm_mdio_write(struct net_device *netdev, int phy_id, int reg, int val)
{
struct usbnet *dev = netdev_priv(netdev);
int ret;
ret = pla_write_word(dev, OCP_BASE, 0xa000);
if (ret < 0)
return;
ret = pla_write_word(dev, 0xb400 + reg * 2, val);
}
static int r8153_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status;
status = usbnet_cdc_bind(dev, intf);
if (status < 0)
return status;
dev->mii.dev = dev->net;
dev->mii.mdio_read = r8153_ecm_mdio_read;
dev->mii.mdio_write = r8153_ecm_mdio_write;
dev->mii.reg_num_mask = 0x1f;
dev->mii.supports_gmii = 1;
return status;
}
static const struct driver_info r8153_info = {
.description = "RTL8153 ECM Device",
.flags = FLAG_ETHER,
.bind = r8153_bind,
.unbind = usbnet_cdc_unbind,
.status = usbnet_cdc_status,
.manage_power = usbnet_manage_power,
};
static const struct usb_device_id products[] = {
{
USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID_REALTEK, 0x8153, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&r8153_info,
},
{ }, /* END */
};
MODULE_DEVICE_TABLE(usb, products);
static int rtl8153_ecm_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
#if IS_REACHABLE(CONFIG_USB_RTL8152)
if (rtl8152_get_version(intf))
return -ENODEV;
#endif
return usbnet_probe(intf, id);
}
static struct usb_driver r8153_ecm_driver = {
.name = "r8153_ecm",
.id_table = products,
.probe = rtl8153_ecm_probe,
.disconnect = usbnet_disconnect,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
.reset_resume = usbnet_resume,
.supports_autosuspend = 1,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(r8153_ecm_driver);
MODULE_AUTHOR("Hayes Wang");
MODULE_DESCRIPTION("Realtek USB ECM device");
MODULE_LICENSE("GPL");
|
