LXR linux/drivers/net/ethernet/freescale/dpaa/dpaa_eth

   1/* Copyright 2008-2016 Freescale Semiconductor Inc.
   2 *
   3 * Redistribution and use in source and binary forms, with or without
   4 * modification, are permitted provided that the following conditions are met:
   5 *     * Redistributions of source code must retain the above copyright
   6 *       notice, this list of conditions and the following disclaimer.
   7 *     * Redistributions in binary form must reproduce the above copyright
   8 *       notice, this list of conditions and the following disclaimer in the
   9 *       documentation and/or other materials provided with the distribution.
  10 *     * Neither the name of Freescale Semiconductor nor the
  11 *       names of its contributors may be used to endorse or promote products
  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
  17 * Foundation, either version 2 of that License or (at your option) any
  18 * later version.
  19 *
  20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  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
  39static 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
  52static 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
 129static 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
 143static 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
 149void 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
 162void 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