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
|
/*
* Copyright 2008-2013 Freescale Semiconductor Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) \
KBUILD_MODNAME ": %s:%hu:%s() " fmt, \
KBUILD_BASENAME".c", __LINE__, __func__
#include <linux/init.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include "dpaa_eth.h"
#include "dpaa_eth_common.h"
#include "lnxwrp_fsl_fman.h" /* fm_get_rx_extra_headroom(), fm_get_max_frm() */
#define DPA_DESCRIPTION "FSL DPAA Proxy initialization driver"
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION(DPA_DESCRIPTION);
static uint8_t debug = -1;
module_param(debug, byte, S_IRUGO);
MODULE_PARM_DESC(debug, "Module/Driver verbosity level");
/* forward declarations */
static int dpaa_eth_proxy_probe(struct platform_device *_of_dev);
static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev);
static const struct of_device_id dpa_proxy_match[] = {
{
.compatible = "fsl,dpa-ethernet-init"
},
{}
};
MODULE_DEVICE_TABLE(of, dpa_proxy_match);
static struct platform_driver dpa_proxy_driver = {
.driver = {
.name = KBUILD_MODNAME"-proxy",
.of_match_table = dpa_proxy_match,
.owner = THIS_MODULE,
},
.probe = dpaa_eth_proxy_probe,
.remove = dpa_eth_proxy_remove
};
static int dpaa_eth_proxy_probe(struct platform_device *_of_dev)
{
int err = 0, i;
struct device *dev;
struct device_node *dpa_node;
struct dpa_bp *dpa_bp;
struct list_head proxy_fq_list;
size_t count;
struct fm_port_fqs port_fqs;
struct dpa_buffer_layout_s *buf_layout = NULL;
struct mac_device *mac_dev;
dev = &_of_dev->dev;
dpa_node = dev->of_node;
if (!of_device_is_available(dpa_node))
return -ENODEV;
/* Get the buffer pools assigned to this interface */
dpa_bp = dpa_bp_probe(_of_dev, &count, NULL);
if (IS_ERR(dpa_bp))
return PTR_ERR(dpa_bp);
mac_dev = dpa_mac_probe(_of_dev);
if (IS_ERR(mac_dev))
return PTR_ERR(mac_dev);
/* We have physical ports, so we need to establish
* the buffer layout.
*/
buf_layout = devm_kzalloc(dev, 2 * sizeof(*buf_layout),
GFP_KERNEL);
if (!buf_layout) {
dev_err(dev, "devm_kzalloc() failed\n");
return -ENOMEM;
}
dpa_set_buffers_layout(mac_dev, buf_layout);
INIT_LIST_HEAD(&proxy_fq_list);
memset(&port_fqs, 0, sizeof(port_fqs));
err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true, RX);
if (!err)
err = dpa_fq_probe_mac(dev, &proxy_fq_list, &port_fqs, true,
TX);
if (err < 0) {
devm_kfree(dev, buf_layout);
return err;
}
/* Proxy initializer - Just configures the MAC on behalf of
* another partition.
*/
dpaa_eth_init_ports(mac_dev, dpa_bp, count, &port_fqs,
buf_layout, dev);
/* Proxy interfaces need to be started, and the allocated
* memory freed
*/
devm_kfree(dev, buf_layout);
devm_kfree(dev, dpa_bp);
/* Free FQ structures */
devm_kfree(dev, port_fqs.rx_defq);
devm_kfree(dev, port_fqs.rx_errq);
devm_kfree(dev, port_fqs.tx_defq);
devm_kfree(dev, port_fqs.tx_errq);
for_each_port_device(i, mac_dev->port_dev)
fm_port_enable(mac_dev->port_dev[i]);
return 0; /* Proxy interface initialization ended */
}
static int __cold dpa_eth_proxy_remove(struct platform_device *of_dev)
{
return 0;
}
static int __init __cold dpa_proxy_load(void)
{
int _errno;
printk(KERN_INFO KBUILD_MODNAME ": " DPA_DESCRIPTION " (" VERSION ")\n");
/* Initialize dpaa_eth mirror values */
dpa_rx_extra_headroom = fm_get_rx_extra_headroom();
dpa_max_frm = fm_get_max_frm();
_errno = platform_driver_register(&dpa_proxy_driver);
if (unlikely(_errno < 0)) {
pr_err(KBUILD_MODNAME
": %s:%hu:%s(): platform_driver_register() = %d\n",
KBUILD_BASENAME".c", __LINE__, __func__, _errno);
}
pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
KBUILD_BASENAME".c", __func__);
return _errno;
}
module_init(dpa_proxy_load);
static void __exit __cold dpa_proxy_unload(void)
{
platform_driver_unregister(&dpa_proxy_driver);
pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
KBUILD_BASENAME".c", __func__);
}
module_exit(dpa_proxy_unload);
|
