// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
/*
 * Copyright 2008 - 2016 Freescale Semiconductor Inc.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/of_net.h>
#include "dpaa_eth.h"
#include "mac.h"

static ssize_t dpaa_eth_show_addr(struct device *dev,
                                  struct device_attribute *attr, char *buf)
{
        struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
        struct mac_device *mac_dev = priv->mac_dev;

        if (mac_dev)
                return sprintf(buf, "%llx",
                                (unsigned long long)mac_dev->res->start);
        else
                return sprintf(buf, "none");
}

static ssize_t dpaa_eth_show_fqids(struct device *dev,
                                   struct device_attribute *attr, char *buf)
{
        struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
        struct dpaa_fq *prev = NULL;
        char *prevstr = NULL;
        struct dpaa_fq *tmp;
        struct dpaa_fq *fq;
        u32 first_fqid = 0;
        u32 last_fqid = 0;
        ssize_t bytes = 0;
        char *str;

        list_for_each_entry_safe(fq, tmp, &priv->dpaa_fq_list, list) {
                switch (fq->fq_type) {
                case FQ_TYPE_RX_DEFAULT:
                        str = "Rx default";
                        break;
                case FQ_TYPE_RX_ERROR:
                        str = "Rx error";
                        break;
                case FQ_TYPE_RX_PCD:
                        str = "Rx PCD";
                        break;
                case FQ_TYPE_TX_CONFIRM:
                        str = "Tx default confirmation";
                        break;
                case FQ_TYPE_TX_CONF_MQ:
                        str = "Tx confirmation (mq)";
                        break;
                case FQ_TYPE_TX_ERROR:
                        str = "Tx error";
                        break;
                case FQ_TYPE_TX:
                        str = "Tx";
                        break;
                default:
                        str = "Unknown";
                }

                if (prev && (abs(fq->fqid - prev->fqid) != 1 ||
                             str != prevstr)) {
                        if (last_fqid == first_fqid)
                                bytes += sprintf(buf + bytes,
                                        "%s: %d\n", prevstr, prev->fqid);
                        else
                                bytes += sprintf(buf + bytes,
                                        "%s: %d - %d\n", prevstr,
                                        first_fqid, last_fqid);
                }

                if (prev && abs(fq->fqid - prev->fqid) == 1 &&
                    str == prevstr) {
                        last_fqid = fq->fqid;
                } else {
                        first_fqid = fq->fqid;
                        last_fqid = fq->fqid;
                }

                prev = fq;
                prevstr = str;
        }

        if (prev) {
                if (last_fqid == first_fqid)
                        bytes += sprintf(buf + bytes, "%s: %d\n", prevstr,
                                        prev->fqid);
                else
                        bytes += sprintf(buf + bytes, "%s: %d - %d\n", prevstr,
                                        first_fqid, last_fqid);
        }

        return bytes;
}

static ssize_t dpaa_eth_show_bpids(struct device *dev,
                                   struct device_attribute *attr, char *buf)
{
        struct dpaa_priv *priv = netdev_priv(to_net_dev(dev));
        ssize_t bytes = 0;

        bytes += snprintf(buf + bytes, PAGE_SIZE - bytes, "%u\n",
                                  priv->dpaa_bp->bpid);

        return bytes;
}

static struct device_attribute dpaa_eth_attrs[] = {
        __ATTR(device_addr, 0444, dpaa_eth_show_addr, NULL),
        __ATTR(fqids, 0444, dpaa_eth_show_fqids, NULL),
        __ATTR(bpids, 0444, dpaa_eth_show_bpids, NULL),
};

void dpaa_eth_sysfs_init(struct device *dev)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
                if (device_create_file(dev, &dpaa_eth_attrs[i])) {
                        dev_err(dev, "Error creating sysfs file\n");
                        while (i > 0)
                                device_remove_file(dev, &dpaa_eth_attrs[--i]);
                        return;
                }
}

void dpaa_eth_sysfs_remove(struct device *dev)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(dpaa_eth_attrs); i++)
                device_remove_file(dev, &dpaa_eth_attrs[i]);
}