460 lines
13 KiB
C
460 lines
13 KiB
C
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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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/* Statistics for Ocelot switch family
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*
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* Copyright (c) 2017 Microsemi Corporation
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* Copyright 2022 NXP
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*/
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/workqueue.h>
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#include "ocelot.h"
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/* Read the counters from hardware and keep them in region->buf.
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* Caller must hold &ocelot->stat_view_lock.
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*/
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static int ocelot_port_update_stats(struct ocelot *ocelot, int port)
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{
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struct ocelot_stats_region *region;
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int err;
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/* Configure the port to read the stats from */
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ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), SYS_STAT_CFG);
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list_for_each_entry(region, &ocelot->stats_regions, node) {
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err = ocelot_bulk_read(ocelot, region->base, region->buf,
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region->count);
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if (err)
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return err;
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}
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return 0;
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}
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/* Transfer the counters from region->buf to ocelot->stats.
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* Caller must hold &ocelot->stat_view_lock and &ocelot->stats_lock.
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*/
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static void ocelot_port_transfer_stats(struct ocelot *ocelot, int port)
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{
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unsigned int idx = port * OCELOT_NUM_STATS;
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struct ocelot_stats_region *region;
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int j;
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list_for_each_entry(region, &ocelot->stats_regions, node) {
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for (j = 0; j < region->count; j++) {
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u64 *stat = &ocelot->stats[idx + j];
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u64 val = region->buf[j];
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if (val < (*stat & U32_MAX))
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*stat += (u64)1 << 32;
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*stat = (*stat & ~(u64)U32_MAX) + val;
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}
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idx += region->count;
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}
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}
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static void ocelot_check_stats_work(struct work_struct *work)
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{
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struct delayed_work *del_work = to_delayed_work(work);
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struct ocelot *ocelot = container_of(del_work, struct ocelot,
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stats_work);
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int port, err;
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mutex_lock(&ocelot->stat_view_lock);
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for (port = 0; port < ocelot->num_phys_ports; port++) {
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err = ocelot_port_update_stats(ocelot, port);
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if (err)
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break;
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spin_lock(&ocelot->stats_lock);
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ocelot_port_transfer_stats(ocelot, port);
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spin_unlock(&ocelot->stats_lock);
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}
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if (!err && ocelot->ops->update_stats)
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ocelot->ops->update_stats(ocelot);
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mutex_unlock(&ocelot->stat_view_lock);
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if (err)
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dev_err(ocelot->dev, "Error %d updating ethtool stats\n", err);
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queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
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OCELOT_STATS_CHECK_DELAY);
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}
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void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data)
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{
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int i;
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if (sset != ETH_SS_STATS)
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return;
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for (i = 0; i < OCELOT_NUM_STATS; i++) {
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if (ocelot->stats_layout[i].name[0] == '\0')
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continue;
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memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
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ETH_GSTRING_LEN);
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}
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}
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EXPORT_SYMBOL(ocelot_get_strings);
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/* Update ocelot->stats for the given port and run the given callback */
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static void ocelot_port_stats_run(struct ocelot *ocelot, int port, void *priv,
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void (*cb)(struct ocelot *ocelot, int port,
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void *priv))
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{
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int err;
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mutex_lock(&ocelot->stat_view_lock);
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err = ocelot_port_update_stats(ocelot, port);
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if (err) {
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dev_err(ocelot->dev, "Failed to update port %d stats: %pe\n",
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port, ERR_PTR(err));
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goto out_unlock;
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}
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spin_lock(&ocelot->stats_lock);
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ocelot_port_transfer_stats(ocelot, port);
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cb(ocelot, port, priv);
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spin_unlock(&ocelot->stats_lock);
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out_unlock:
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mutex_unlock(&ocelot->stat_view_lock);
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}
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int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset)
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{
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int i, num_stats = 0;
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if (sset != ETH_SS_STATS)
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return -EOPNOTSUPP;
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for (i = 0; i < OCELOT_NUM_STATS; i++)
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if (ocelot->stats_layout[i].name[0] != '\0')
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num_stats++;
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return num_stats;
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}
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EXPORT_SYMBOL(ocelot_get_sset_count);
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static void ocelot_port_ethtool_stats_cb(struct ocelot *ocelot, int port,
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void *priv)
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{
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u64 *data = priv;
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int i;
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/* Copy all supported counters */
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for (i = 0; i < OCELOT_NUM_STATS; i++) {
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int index = port * OCELOT_NUM_STATS + i;
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if (ocelot->stats_layout[i].name[0] == '\0')
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continue;
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*data++ = ocelot->stats[index];
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}
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}
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void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data)
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{
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ocelot_port_stats_run(ocelot, port, data, ocelot_port_ethtool_stats_cb);
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}
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EXPORT_SYMBOL(ocelot_get_ethtool_stats);
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static void ocelot_port_pause_stats_cb(struct ocelot *ocelot, int port, void *priv)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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struct ethtool_pause_stats *pause_stats = priv;
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pause_stats->tx_pause_frames = s[OCELOT_STAT_TX_PAUSE];
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pause_stats->rx_pause_frames = s[OCELOT_STAT_RX_PAUSE];
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}
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void ocelot_port_get_pause_stats(struct ocelot *ocelot, int port,
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struct ethtool_pause_stats *pause_stats)
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{
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ocelot_port_stats_run(ocelot, port, pause_stats,
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ocelot_port_pause_stats_cb);
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}
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EXPORT_SYMBOL_GPL(ocelot_port_get_pause_stats);
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static const struct ethtool_rmon_hist_range ocelot_rmon_ranges[] = {
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{ 64, 64 },
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{ 65, 127 },
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{ 128, 255 },
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{ 256, 511 },
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{ 512, 1023 },
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{ 1024, 1526 },
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{ 1527, 65535 },
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{},
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};
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static void ocelot_port_rmon_stats_cb(struct ocelot *ocelot, int port, void *priv)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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struct ethtool_rmon_stats *rmon_stats = priv;
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rmon_stats->undersize_pkts = s[OCELOT_STAT_RX_SHORTS];
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rmon_stats->oversize_pkts = s[OCELOT_STAT_RX_LONGS];
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rmon_stats->fragments = s[OCELOT_STAT_RX_FRAGMENTS];
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rmon_stats->jabbers = s[OCELOT_STAT_RX_JABBERS];
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rmon_stats->hist[0] = s[OCELOT_STAT_RX_64];
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rmon_stats->hist[1] = s[OCELOT_STAT_RX_65_127];
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rmon_stats->hist[2] = s[OCELOT_STAT_RX_128_255];
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rmon_stats->hist[3] = s[OCELOT_STAT_RX_256_511];
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rmon_stats->hist[4] = s[OCELOT_STAT_RX_512_1023];
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rmon_stats->hist[5] = s[OCELOT_STAT_RX_1024_1526];
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rmon_stats->hist[6] = s[OCELOT_STAT_RX_1527_MAX];
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rmon_stats->hist_tx[0] = s[OCELOT_STAT_TX_64];
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rmon_stats->hist_tx[1] = s[OCELOT_STAT_TX_65_127];
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rmon_stats->hist_tx[2] = s[OCELOT_STAT_TX_128_255];
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rmon_stats->hist_tx[3] = s[OCELOT_STAT_TX_128_255];
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rmon_stats->hist_tx[4] = s[OCELOT_STAT_TX_256_511];
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rmon_stats->hist_tx[5] = s[OCELOT_STAT_TX_512_1023];
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rmon_stats->hist_tx[6] = s[OCELOT_STAT_TX_1024_1526];
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}
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void ocelot_port_get_rmon_stats(struct ocelot *ocelot, int port,
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struct ethtool_rmon_stats *rmon_stats,
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const struct ethtool_rmon_hist_range **ranges)
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{
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*ranges = ocelot_rmon_ranges;
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ocelot_port_stats_run(ocelot, port, rmon_stats,
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ocelot_port_rmon_stats_cb);
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}
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EXPORT_SYMBOL_GPL(ocelot_port_get_rmon_stats);
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static void ocelot_port_ctrl_stats_cb(struct ocelot *ocelot, int port, void *priv)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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struct ethtool_eth_ctrl_stats *ctrl_stats = priv;
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ctrl_stats->MACControlFramesReceived = s[OCELOT_STAT_RX_CONTROL];
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}
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void ocelot_port_get_eth_ctrl_stats(struct ocelot *ocelot, int port,
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struct ethtool_eth_ctrl_stats *ctrl_stats)
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{
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ocelot_port_stats_run(ocelot, port, ctrl_stats,
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ocelot_port_ctrl_stats_cb);
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}
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EXPORT_SYMBOL_GPL(ocelot_port_get_eth_ctrl_stats);
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static void ocelot_port_mac_stats_cb(struct ocelot *ocelot, int port, void *priv)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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struct ethtool_eth_mac_stats *mac_stats = priv;
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mac_stats->OctetsTransmittedOK = s[OCELOT_STAT_TX_OCTETS];
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mac_stats->FramesTransmittedOK = s[OCELOT_STAT_TX_64] +
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s[OCELOT_STAT_TX_65_127] +
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s[OCELOT_STAT_TX_128_255] +
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s[OCELOT_STAT_TX_256_511] +
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s[OCELOT_STAT_TX_512_1023] +
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s[OCELOT_STAT_TX_1024_1526] +
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s[OCELOT_STAT_TX_1527_MAX];
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mac_stats->OctetsReceivedOK = s[OCELOT_STAT_RX_OCTETS];
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mac_stats->FramesReceivedOK = s[OCELOT_STAT_RX_GREEN_PRIO_0] +
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s[OCELOT_STAT_RX_GREEN_PRIO_1] +
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s[OCELOT_STAT_RX_GREEN_PRIO_2] +
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s[OCELOT_STAT_RX_GREEN_PRIO_3] +
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s[OCELOT_STAT_RX_GREEN_PRIO_4] +
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s[OCELOT_STAT_RX_GREEN_PRIO_5] +
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s[OCELOT_STAT_RX_GREEN_PRIO_6] +
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s[OCELOT_STAT_RX_GREEN_PRIO_7] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_0] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_1] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_2] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_3] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_4] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_5] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_6] +
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s[OCELOT_STAT_RX_YELLOW_PRIO_7];
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mac_stats->MulticastFramesXmittedOK = s[OCELOT_STAT_TX_MULTICAST];
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mac_stats->BroadcastFramesXmittedOK = s[OCELOT_STAT_TX_BROADCAST];
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mac_stats->MulticastFramesReceivedOK = s[OCELOT_STAT_RX_MULTICAST];
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mac_stats->BroadcastFramesReceivedOK = s[OCELOT_STAT_RX_BROADCAST];
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mac_stats->FrameTooLongErrors = s[OCELOT_STAT_RX_LONGS];
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/* Sadly, C_RX_CRC is the sum of FCS and alignment errors, they are not
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* counted individually.
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*/
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mac_stats->FrameCheckSequenceErrors = s[OCELOT_STAT_RX_CRC_ALIGN_ERRS];
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mac_stats->AlignmentErrors = s[OCELOT_STAT_RX_CRC_ALIGN_ERRS];
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}
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void ocelot_port_get_eth_mac_stats(struct ocelot *ocelot, int port,
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struct ethtool_eth_mac_stats *mac_stats)
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{
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ocelot_port_stats_run(ocelot, port, mac_stats,
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ocelot_port_mac_stats_cb);
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}
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EXPORT_SYMBOL_GPL(ocelot_port_get_eth_mac_stats);
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static void ocelot_port_phy_stats_cb(struct ocelot *ocelot, int port, void *priv)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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struct ethtool_eth_phy_stats *phy_stats = priv;
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phy_stats->SymbolErrorDuringCarrier = s[OCELOT_STAT_RX_SYM_ERRS];
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}
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void ocelot_port_get_eth_phy_stats(struct ocelot *ocelot, int port,
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struct ethtool_eth_phy_stats *phy_stats)
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{
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ocelot_port_stats_run(ocelot, port, phy_stats,
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ocelot_port_phy_stats_cb);
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}
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EXPORT_SYMBOL_GPL(ocelot_port_get_eth_phy_stats);
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void ocelot_port_get_stats64(struct ocelot *ocelot, int port,
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struct rtnl_link_stats64 *stats)
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{
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u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
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spin_lock(&ocelot->stats_lock);
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/* Get Rx stats */
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stats->rx_bytes = s[OCELOT_STAT_RX_OCTETS];
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stats->rx_packets = s[OCELOT_STAT_RX_SHORTS] +
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s[OCELOT_STAT_RX_FRAGMENTS] +
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s[OCELOT_STAT_RX_JABBERS] +
|
||
|
|
s[OCELOT_STAT_RX_LONGS] +
|
||
|
|
s[OCELOT_STAT_RX_64] +
|
||
|
|
s[OCELOT_STAT_RX_65_127] +
|
||
|
|
s[OCELOT_STAT_RX_128_255] +
|
||
|
|
s[OCELOT_STAT_RX_256_511] +
|
||
|
|
s[OCELOT_STAT_RX_512_1023] +
|
||
|
|
s[OCELOT_STAT_RX_1024_1526] +
|
||
|
|
s[OCELOT_STAT_RX_1527_MAX];
|
||
|
|
stats->multicast = s[OCELOT_STAT_RX_MULTICAST];
|
||
|
|
stats->rx_missed_errors = s[OCELOT_STAT_DROP_TAIL];
|
||
|
|
stats->rx_dropped = s[OCELOT_STAT_RX_RED_PRIO_0] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_1] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_2] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_3] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_4] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_5] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_6] +
|
||
|
|
s[OCELOT_STAT_RX_RED_PRIO_7] +
|
||
|
|
s[OCELOT_STAT_DROP_LOCAL] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_0] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_1] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_2] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_3] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_4] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_5] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_6] +
|
||
|
|
s[OCELOT_STAT_DROP_YELLOW_PRIO_7] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_0] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_1] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_2] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_3] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_4] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_5] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_6] +
|
||
|
|
s[OCELOT_STAT_DROP_GREEN_PRIO_7];
|
||
|
|
|
||
|
|
/* Get Tx stats */
|
||
|
|
stats->tx_bytes = s[OCELOT_STAT_TX_OCTETS];
|
||
|
|
stats->tx_packets = s[OCELOT_STAT_TX_64] +
|
||
|
|
s[OCELOT_STAT_TX_65_127] +
|
||
|
|
s[OCELOT_STAT_TX_128_255] +
|
||
|
|
s[OCELOT_STAT_TX_256_511] +
|
||
|
|
s[OCELOT_STAT_TX_512_1023] +
|
||
|
|
s[OCELOT_STAT_TX_1024_1526] +
|
||
|
|
s[OCELOT_STAT_TX_1527_MAX];
|
||
|
|
stats->tx_dropped = s[OCELOT_STAT_TX_DROPS] +
|
||
|
|
s[OCELOT_STAT_TX_AGED];
|
||
|
|
stats->collisions = s[OCELOT_STAT_TX_COLLISION];
|
||
|
|
|
||
|
|
spin_unlock(&ocelot->stats_lock);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(ocelot_port_get_stats64);
|
||
|
|
|
||
|
|
static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
|
||
|
|
{
|
||
|
|
struct ocelot_stats_region *region = NULL;
|
||
|
|
unsigned int last;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
INIT_LIST_HEAD(&ocelot->stats_regions);
|
||
|
|
|
||
|
|
for (i = 0; i < OCELOT_NUM_STATS; i++) {
|
||
|
|
if (!ocelot->stats_layout[i].reg)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (region && ocelot->map[SYS][ocelot->stats_layout[i].reg & REG_MASK] ==
|
||
|
|
ocelot->map[SYS][last & REG_MASK] + 4) {
|
||
|
|
region->count++;
|
||
|
|
} else {
|
||
|
|
region = devm_kzalloc(ocelot->dev, sizeof(*region),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!region)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
region->base = ocelot->stats_layout[i].reg;
|
||
|
|
region->count = 1;
|
||
|
|
list_add_tail(®ion->node, &ocelot->stats_regions);
|
||
|
|
}
|
||
|
|
|
||
|
|
last = ocelot->stats_layout[i].reg;
|
||
|
|
}
|
||
|
|
|
||
|
|
list_for_each_entry(region, &ocelot->stats_regions, node) {
|
||
|
|
region->buf = devm_kcalloc(ocelot->dev, region->count,
|
||
|
|
sizeof(*region->buf), GFP_KERNEL);
|
||
|
|
if (!region->buf)
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int ocelot_stats_init(struct ocelot *ocelot)
|
||
|
|
{
|
||
|
|
char queue_name[32];
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ocelot->stats = devm_kcalloc(ocelot->dev,
|
||
|
|
ocelot->num_phys_ports * OCELOT_NUM_STATS,
|
||
|
|
sizeof(u64), GFP_KERNEL);
|
||
|
|
if (!ocelot->stats)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
snprintf(queue_name, sizeof(queue_name), "%s-stats",
|
||
|
|
dev_name(ocelot->dev));
|
||
|
|
ocelot->stats_queue = create_singlethread_workqueue(queue_name);
|
||
|
|
if (!ocelot->stats_queue)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
spin_lock_init(&ocelot->stats_lock);
|
||
|
|
mutex_init(&ocelot->stat_view_lock);
|
||
|
|
|
||
|
|
ret = ocelot_prepare_stats_regions(ocelot);
|
||
|
|
if (ret) {
|
||
|
|
destroy_workqueue(ocelot->stats_queue);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work);
|
||
|
|
queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
|
||
|
|
OCELOT_STATS_CHECK_DELAY);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ocelot_stats_deinit(struct ocelot *ocelot)
|
||
|
|
{
|
||
|
|
cancel_delayed_work(&ocelot->stats_work);
|
||
|
|
destroy_workqueue(ocelot->stats_queue);
|
||
|
|
}
|