1 /* Copyright 2008-2016 Freescale Semiconductor Inc.
2  *
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4  * modification, are permitted provided that the following conditions are met:
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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
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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 }
169