1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
2 /*
3  * Copyright 2008 - 2016 Freescale Semiconductor Inc.
4  */
5 
6 #include <linux/init.h>
7 #include <linux/module.h>
8 #include <linux/io.h>
9 #include <linux/of_net.h>
10 #include "dpaa_eth.h"
11 #include "mac.h"
12 
13 static ssize_t dpaa_eth_show_addr(struct device *dev,
14 				  struct device_attribute *attr, char *buf)
15 {
16 	struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
17 	struct mac_device *mac_dev = priv->mac_dev;
18 
19 	if (mac_dev)
20 		return sprintf(buf, "%llx",
21 				(unsigned long long)mac_dev->res->start);
22 	else
23 		return sprintf(buf, "none");
24 }
25 
26 static ssize_t dpaa_eth_show_fqids(struct device *dev,
27 				   struct device_attribute *attr, char *buf)
28 {
29 	struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
30 	struct dpaa_fq *prev = NULL;
31 	char *prevstr = NULL;
32 	struct dpaa_fq *tmp;
33 	struct dpaa_fq *fq;
34 	u32 first_fqid = 0;
35 	u32 last_fqid = 0;
36 	ssize_t bytes = 0;
37 	char *str;
38 	int i = 0;
39 
40 	list_for_each_entry_safe(fq, tmp, &priv->dpaa_fq_list, list) {
41 		switch (fq->fq_type) {
42 		case FQ_TYPE_RX_DEFAULT:
43 			str = "Rx default";
44 			break;
45 		case FQ_TYPE_RX_ERROR:
46 			str = "Rx error";
47 			break;
48 		case FQ_TYPE_RX_PCD:
49 			str = "Rx PCD";
50 			break;
51 		case FQ_TYPE_TX_CONFIRM:
52 			str = "Tx default confirmation";
53 			break;
54 		case FQ_TYPE_TX_CONF_MQ:
55 			str = "Tx confirmation (mq)";
56 			break;
57 		case FQ_TYPE_TX_ERROR:
58 			str = "Tx error";
59 			break;
60 		case FQ_TYPE_TX:
61 			str = "Tx";
62 			break;
63 		default:
64 			str = "Unknown";
65 		}
66 
67 		if (prev && (abs(fq->fqid - prev->fqid) != 1 ||
68 			     str != prevstr)) {
69 			if (last_fqid == first_fqid)
70 				bytes += sprintf(buf + bytes,
71 					"%s: %d\n", prevstr, prev->fqid);
72 			else
73 				bytes += sprintf(buf + bytes,
74 					"%s: %d - %d\n", prevstr,
75 					first_fqid, last_fqid);
76 		}
77 
78 		if (prev && abs(fq->fqid - prev->fqid) == 1 &&
79 		    str == prevstr) {
80 			last_fqid = fq->fqid;
81 		} else {
82 			first_fqid = fq->fqid;
83 			last_fqid = fq->fqid;
84 		}
85 
86 		prev = fq;
87 		prevstr = str;
88 		i++;
89 	}
90 
91 	if (prev) {
92 		if (last_fqid == first_fqid)
93 			bytes += sprintf(buf + bytes, "%s: %d\n", prevstr,
94 					prev->fqid);
95 		else
96 			bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr,
97 					first_fqid, last_fqid);
98 	}
99 
100 	return bytes;
101 }
102 
103 static ssize_t dpaa_eth_show_bpids(struct device *dev,
104 				   struct device_attribute *attr, char *buf)
105 {
106 	struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
107 	ssize_t bytes = 0;
108 
109 	bytes += snprintf(buf + bytes, PAGE_SIZE - bytes, "%u\n",
110 				  priv->dpaa_bp->bpid);
111 
112 	return bytes;
113 }
114 
115 static struct device_attribute dpaa_eth_attrs[] = {
116 	__ATTR(device_addr, 0444, dpaa_eth_show_addr, NULL),
117 	__ATTR(fqids, 0444, dpaa_eth_show_fqids, NULL),
118 	__ATTR(bpids, 0444, dpaa_eth_show_bpids, NULL),
119 };
120 
121 void dpaa_eth_sysfs_init(struct device *dev)
122 {
123 	int i;
124 
125 	for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
126 		if (device_create_file(dev, &dpaa_eth_attrs[i])) {
127 			dev_err(dev, "Error creating sysfs file\n");
128 			while (i > 0)
129 				device_remove_file(dev, &dpaa_eth_attrs[--i]);
130 			return;
131 		}
132 }
133 
134 void dpaa_eth_sysfs_remove(struct device *dev)
135 {
136 	int i;
137 
138 	for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
139 		device_remove_file(dev, &dpaa_eth_attrs[i]);
140 }
141