freescale/dpaa/dpaa_eth_sysfs.c

0001 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
0002 /*
0003  * Copyright 2008 - 2016 Freescale Semiconductor Inc.
0004  */
0005
0006 #include <linux/init.h>
0007 #include <linux/module.h>
0008 #include <linux/io.h>
0009 #include <linux/of_net.h>
0010 #include "dpaa_eth.h"
0011 #include "mac.h"
0012
0013 static ssize_t dpaa_eth_show_addr(struct device *dev,
0014                   struct device_attribute *attr, char *buf)
0015 {
0016     struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
0017     struct mac_device *mac_dev = priv->mac_dev;
0018
0019     if (mac_dev)
0020         return sprintf(buf, "%llx",
0021                 (unsigned long long)mac_dev->res->start);
0022     else
0023         return sprintf(buf, "none");
0024 }
0025
0026 static ssize_t dpaa_eth_show_fqids(struct device *dev,
0027                    struct device_attribute *attr, char *buf)
0028 {
0029     struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
0030     struct dpaa_fq *prev = NULL;
0031     char *prevstr = NULL;
0032     struct dpaa_fq *tmp;
0033     struct dpaa_fq *fq;
0034     u32 first_fqid = 0;
0035     u32 last_fqid = 0;
0036     ssize_t bytes = 0;
0037     char *str;
0038     int i = 0;
0039
0040     list_for_each_entry_safe(fq, tmp, &priv->dpaa_fq_list, list) {
0041         switch (fq->fq_type) {
0042         case FQ_TYPE_RX_DEFAULT:
0043             str = "Rx default";
0044             break;
0045         case FQ_TYPE_RX_ERROR:
0046             str = "Rx error";
0047             break;
0048         case FQ_TYPE_RX_PCD:
0049             str = "Rx PCD";
0050             break;
0051         case FQ_TYPE_TX_CONFIRM:
0052             str = "Tx default confirmation";
0053             break;
0054         case FQ_TYPE_TX_CONF_MQ:
0055             str = "Tx confirmation (mq)";
0056             break;
0057         case FQ_TYPE_TX_ERROR:
0058             str = "Tx error";
0059             break;
0060         case FQ_TYPE_TX:
0061             str = "Tx";
0062             break;
0063         default:
0064             str = "Unknown";
0065         }
0066
0067         if (prev && (abs(fq->fqid - prev->fqid) != 1 ||
0068                  str != prevstr)) {
0069             if (last_fqid == first_fqid)
0070                 bytes += sprintf(buf + bytes,
0071                     "%s: %d\n", prevstr, prev->fqid);
0072             else
0073                 bytes += sprintf(buf + bytes,
0074                     "%s: %d - %d\n", prevstr,
0075                     first_fqid, last_fqid);
0076         }
0077
0078         if (prev && abs(fq->fqid - prev->fqid) == 1 &&
0079             str == prevstr) {
0080             last_fqid = fq->fqid;
0081         } else {
0082             first_fqid = fq->fqid;
0083             last_fqid = fq->fqid;
0084         }
0085
0086         prev = fq;
0087         prevstr = str;
0088         i++;
0089     }
0090
0091     if (prev) {
0092         if (last_fqid == first_fqid)
0093             bytes += sprintf(buf + bytes, "%s: %d\n", prevstr,
0094                     prev->fqid);
0095         else
0096             bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr,
0097                     first_fqid, last_fqid);
0098     }
0099
0100     return bytes;
0101 }
0102
0103 static ssize_t dpaa_eth_show_bpids(struct device *dev,
0104                    struct device_attribute *attr, char *buf)
0105 {
0106     struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
0107     ssize_t bytes = 0;
0108
0109     bytes += snprintf(buf + bytes, PAGE_SIZE - bytes, "%u\n",
0110                   priv->dpaa_bp->bpid);
0111
0112     return bytes;
0113 }
0114
0115 static struct device_attribute dpaa_eth_attrs[] = {
0116     __ATTR(device_addr, 0444, dpaa_eth_show_addr, NULL),
0117     __ATTR(fqids, 0444, dpaa_eth_show_fqids, NULL),
0118     __ATTR(bpids, 0444, dpaa_eth_show_bpids, NULL),
0119 };
0120
0121 void dpaa_eth_sysfs_init(struct device *dev)
0122 {
0123     int i;
0124
0125     for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
0126         if (device_create_file(dev, &dpaa_eth_attrs[i])) {
0127             dev_err(dev, "Error creating sysfs file\n");
0128             while (i > 0)
0129                 device_remove_file(dev, &dpaa_eth_attrs[--i]);
0130             return;
0131         }
0132 }
0133
0134 void dpaa_eth_sysfs_remove(struct device *dev)
0135 {
0136     int i;
0137
0138     for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
0139         device_remove_file(dev, &dpaa_eth_attrs[i]);
0140 }