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}