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
13static 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
26static 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
103static 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
115static 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
121void 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
134void 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