1 /* Copyright 2008-2016 Freescale Semiconductor Inc.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
5 * * Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * * Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 * * Neither the name of Freescale Semiconductor nor the
11 * names of its contributors may be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 *
15 * ALTERNATIVELY, this software may be distributed under the terms of the
16 * GNU General Public License ("GPL") as published by the Free Software
17 * Foundation, either version 2 of that License or (at your option) any
18 * later version.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <linux/init.h>
33 #include <linux/module.h>
34 #include <linux/io.h>
35 #include <linux/of_net.h>
36 #include "dpaa_eth.h"
37 #include "mac.h"
38
39 static ssize_t dpaa_eth_show_addr(struct device *dev,
40 struct device_attribute *attr, char *buf)
41 {
42 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
43 struct mac_device *mac_dev = priv->mac_dev;
44
45 if (mac_dev)
46 return sprintf(buf, "%llx",
47 (unsigned long long)mac_dev->res->start);
48 else
49 return sprintf(buf, "none");
50 }
51
52 static ssize_t dpaa_eth_show_fqids(struct device *dev,
53 struct device_attribute *attr, char *buf)
54 {
55 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
56 struct dpaa_fq *prev = NULL;
57 char *prevstr = NULL;
58 struct dpaa_fq *tmp;
59 struct dpaa_fq *fq;
60 u32 first_fqid = 0;
61 u32 last_fqid = 0;
62 ssize_t bytes = 0;
63 char *str;
64 int i = 0;
65
66 list_for_each_entry_safe(fq, tmp, &priv->dpaa_fq_list, list) {
67 switch (fq->fq_type) {
68 case FQ_TYPE_RX_DEFAULT:
69 str = "Rx default";
70 break;
71 case FQ_TYPE_RX_ERROR:
72 str = "Rx error";
73 break;
74 case FQ_TYPE_RX_PCD:
75 str = "Rx PCD";
76 break;
77 case FQ_TYPE_TX_CONFIRM:
78 str = "Tx default confirmation";
79 break;
80 case FQ_TYPE_TX_CONF_MQ:
81 str = "Tx confirmation (mq)";
82 break;
83 case FQ_TYPE_TX_ERROR:
84 str = "Tx error";
85 break;
86 case FQ_TYPE_TX:
87 str = "Tx";
88 break;
89 default:
90 str = "Unknown";
91 }
92
93 if (prev && (abs(fq->fqid - prev->fqid) != 1 ||
94 str != prevstr)) {
95 if (last_fqid == first_fqid)
96 bytes += sprintf(buf + bytes,
97 "%s: %d\n", prevstr, prev->fqid);
98 else
99 bytes += sprintf(buf + bytes,
100 "%s: %d - %d\n", prevstr,
101 first_fqid, last_fqid);
102 }
103
104 if (prev && abs(fq->fqid - prev->fqid) == 1 &&
105 str == prevstr) {
106 last_fqid = fq->fqid;
107 } else {
108 first_fqid = fq->fqid;
109 last_fqid = fq->fqid;
110 }
111
112 prev = fq;
113 prevstr = str;
114 i++;
115 }
116
117 if (prev) {
118 if (last_fqid == first_fqid)
119 bytes += sprintf(buf + bytes, "%s: %d\n", prevstr,
120 prev->fqid);
121 else
122 bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr,
123 first_fqid, last_fqid);
124 }
125
126 return bytes;
127 }
128
129 static ssize_t dpaa_eth_show_bpids(struct device *dev,
130 struct device_attribute *attr, char *buf)
131 {
132 struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
133 ssize_t bytes = 0;
134 int i = 0;
135
136 for (i = 0; i < DPAA_BPS_NUM; i++)
137 bytes += snprintf(buf + bytes, PAGE_SIZE - bytes, "%u\n",
138 priv->dpaa_bps[i]->bpid);
139
140 return bytes;
141 }
142
143 static struct device_attribute dpaa_eth_attrs[] = {
144 __ATTR(device_addr, 0444, dpaa_eth_show_addr, NULL),
145 __ATTR(fqids, 0444, dpaa_eth_show_fqids, NULL),
146 __ATTR(bpids, 0444, dpaa_eth_show_bpids, NULL),
147 };
148
149 void dpaa_eth_sysfs_init(struct device *dev)
150 {
151 int i;
152
153 for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
154 if (device_create_file(dev, &dpaa_eth_attrs[i])) {
155 dev_err(dev, "Error creating sysfs file\n");
156 while (i > 0)
157 device_remove_file(dev, &dpaa_eth_attrs[--i]);
158 return;
159 }
160 }
161
162 void dpaa_eth_sysfs_remove(struct device *dev)
163 {
164 int i;
165
166 for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
167 device_remove_file(dev, &dpaa_eth_attrs[i]);
168 }