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
|
/**********************************************************************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2007 Cavium Networks
*
* This file 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.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
**********************************************************************/
#include <linux/kernel.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <net/dst.h>
#include <asm/octeon/octeon.h>
#include "ethernet-defines.h"
#include "octeon-ethernet.h"
#include "ethernet-mdio.h"
#include "cvmx-helper-board.h"
#include "cvmx-smix-defs.h"
DECLARE_MUTEX(mdio_sem);
/**
* Perform an MII read. Called by the generic MII routines
*
* @dev: Device to perform read for
* @phy_id: The MII phy id
* @location: Register location to read
* Returns Result from the read or zero on failure
*/
static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_rd_dat smi_rd;
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = location;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
if (!in_interrupt())
yield();
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if (smi_rd.s.val)
return smi_rd.s.dat;
else
return 0;
}
static int cvm_oct_mdio_dummy_read(struct net_device *dev, int phy_id,
int location)
{
return 0xffff;
}
/**
* Perform an MII write. Called by the generic MII routines
*
* @dev: Device to perform write for
* @phy_id: The MII phy id
* @location: Register location to write
* @val: Value to write
*/
static void cvm_oct_mdio_write(struct net_device *dev, int phy_id, int location,
int val)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_wr_dat smi_wr;
smi_wr.u64 = 0;
smi_wr.s.dat = val;
cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 0;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = location;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
if (!in_interrupt())
yield();
smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
} while (smi_wr.s.pending);
}
static void cvm_oct_mdio_dummy_write(struct net_device *dev, int phy_id,
int location, int val)
{
}
static void cvm_oct_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, "cavium-ethernet");
strcpy(info->version, OCTEON_ETHERNET_VERSION);
strcpy(info->bus_info, "Builtin");
}
static int cvm_oct_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
int ret;
down(&mdio_sem);
ret = mii_ethtool_gset(&priv->mii_info, cmd);
up(&mdio_sem);
return ret;
}
static int cvm_oct_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
int ret;
down(&mdio_sem);
ret = mii_ethtool_sset(&priv->mii_info, cmd);
up(&mdio_sem);
return ret;
}
static int cvm_oct_nway_reset(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
int ret;
down(&mdio_sem);
ret = mii_nway_restart(&priv->mii_info);
up(&mdio_sem);
return ret;
}
static u32 cvm_oct_get_link(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
u32 ret;
down(&mdio_sem);
ret = mii_link_ok(&priv->mii_info);
up(&mdio_sem);
return ret;
}
struct const ethtool_ops cvm_oct_ethtool_ops = {
.get_drvinfo = cvm_oct_get_drvinfo,
.get_settings = cvm_oct_get_settings,
.set_settings = cvm_oct_set_settings,
.nway_reset = cvm_oct_nway_reset,
.get_link = cvm_oct_get_link,
.get_sg = ethtool_op_get_sg,
.get_tx_csum = ethtool_op_get_tx_csum,
};
/**
* IOCTL support for PHY control
*
* @dev: Device to change
* @rq: the request
* @cmd: the command
* Returns Zero on success
*/
int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
struct mii_ioctl_data *data = if_mii(rq);
unsigned int duplex_chg;
int ret;
down(&mdio_sem);
ret = generic_mii_ioctl(&priv->mii_info, data, cmd, &duplex_chg);
up(&mdio_sem);
return ret;
}
/**
* Setup the MDIO device structures
*
* @dev: Device to setup
*
* Returns Zero on success, negative on failure
*/
int cvm_oct_mdio_setup_device(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
int phy_id = cvmx_helper_board_get_mii_address(priv->port);
if (phy_id != -1) {
priv->mii_info.dev = dev;
priv->mii_info.phy_id = phy_id;
priv->mii_info.phy_id_mask = 0xff;
priv->mii_info.supports_gmii = 1;
priv->mii_info.reg_num_mask = 0x1f;
priv->mii_info.mdio_read = cvm_oct_mdio_read;
priv->mii_info.mdio_write = cvm_oct_mdio_write;
} else {
/* Supply dummy MDIO routines so the kernel won't crash
if the user tries to read them */
priv->mii_info.mdio_read = cvm_oct_mdio_dummy_read;
priv->mii_info.mdio_write = cvm_oct_mdio_dummy_write;
}
return 0;
}
|
