1 files changed, 417 insertions, 0 deletions
diff --git a/linux/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/linux/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
new file mode 100644
index 00000000..edf8d665
--- /dev/null
+++ b/linux/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -0,0 +1,417 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+#include <rtems/bsd/local/opt_dpaa.h>
+
+/* Copyright 2008-2015 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/string.h>
+
+#include "dpaa_eth.h"
+#include "mac.h"
+#include "dpaa_eth_common.h"
+
+static const char dpa_stats_percpu[][ETH_GSTRING_LEN] = {
+	"interrupts",
+	"rx packets",
+	"tx packets",
+	"tx confirm",
+	"tx S/G",
+	"tx error",
+	"rx error",
+	"bp count"
+};
+
+static char dpa_stats_global[][ETH_GSTRING_LEN] = {
+	/* dpa rx errors */
+	"rx dma error",
+	"rx frame physical error",
+	"rx frame size error",
+	"rx header error",
+
+	/* demultiplexing errors */
+	"qman cg_tdrop",
+	"qman wred",
+	"qman error cond",
+	"qman early window",
+	"qman late window",
+	"qman fq tdrop",
+	"qman fq retired",
+	"qman orp disabled",
+
+	/* congestion related stats */
+	"congestion time (ms)",
+	"entered congestion",
+	"congested (0/1)"
+};
+
+#define DPA_STATS_PERCPU_LEN ARRAY_SIZE(dpa_stats_percpu)
+#define DPA_STATS_GLOBAL_LEN ARRAY_SIZE(dpa_stats_global)
+
+static int dpa_get_settings(struct net_device *net_dev,
+			    struct ethtool_cmd *et_cmd)
+{
+	int err;
+	struct dpa_priv_s *priv;
+
+	priv = netdev_priv(net_dev);
+
+	if (!priv->mac_dev->phy_dev) {
+		netdev_dbg(net_dev, "phy device not initialized\n");
+		return 0;
+	}
+
+	err = phy_ethtool_gset(priv->mac_dev->phy_dev, et_cmd);
+
+	return err;
+}
+
+static int dpa_set_settings(struct net_device *net_dev,
+			    struct ethtool_cmd *et_cmd)
+{
+	int err;
+	struct dpa_priv_s *priv;
+
+	priv = netdev_priv(net_dev);
+
+	if (!priv->mac_dev->phy_dev) {
+		netdev_err(net_dev, "phy device not initialized\n");
+		return -ENODEV;
+	}
+
+	err = phy_ethtool_sset(priv->mac_dev->phy_dev, et_cmd);
+	if (err < 0)
+		netdev_err(net_dev, "phy_ethtool_sset() = %d\n", err);
+
+	return err;
+}
+
+static void dpa_get_drvinfo(struct net_device *net_dev,
+			    struct ethtool_drvinfo *drvinfo)
+{
+	int len;
+
+	strlcpy(drvinfo->driver, KBUILD_MODNAME,
+		sizeof(drvinfo->driver));
+	len = snprintf(drvinfo->version, sizeof(drvinfo->version),
+		       "%X", 0);
+	len = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+		       "%X", 0);
+
+	if (len >= sizeof(drvinfo->fw_version)) {
+		/* Truncated output */
+		netdev_notice(net_dev, "snprintf() = %d\n", len);
+	}
+	strlcpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent),
+		sizeof(drvinfo->bus_info));
+}
+
+static u32 dpa_get_msglevel(struct net_device *net_dev)
+{
+	return ((struct dpa_priv_s *)netdev_priv(net_dev))->msg_enable;
+}
+
+static void dpa_set_msglevel(struct net_device *net_dev,
+			     u32 msg_enable)
+{
+	((struct dpa_priv_s *)netdev_priv(net_dev))->msg_enable = msg_enable;
+}
+
+static int dpa_nway_reset(struct net_device *net_dev)
+{
+	int err;
+	struct dpa_priv_s *priv;
+
+	priv = netdev_priv(net_dev);
+
+	if (!priv->mac_dev->phy_dev) {
+		netdev_err(net_dev, "phy device not initialized\n");
+		return -ENODEV;
+	}
+
+	err = 0;
+	if (priv->mac_dev->phy_dev->autoneg) {
+		err = phy_start_aneg(priv->mac_dev->phy_dev);
+		if (err < 0)
+			netdev_err(net_dev, "phy_start_aneg() = %d\n",
+				   err);
+	}
+
+	return err;
+}
+
+static void dpa_get_pauseparam(struct net_device *net_dev,
+			       struct ethtool_pauseparam *epause)
+{
+	struct dpa_priv_s *priv;
+	struct mac_device *mac_dev;
+	struct phy_device *phy_dev;
+
+	priv = netdev_priv(net_dev);
+	mac_dev = priv->mac_dev;
+
+	phy_dev = mac_dev->phy_dev;
+	if (!phy_dev) {
+		netdev_err(net_dev, "phy device not initialized\n");
+		return;
+	}
+
+	epause->autoneg = mac_dev->autoneg_pause;
+	epause->rx_pause = mac_dev->rx_pause_active;
+	epause->tx_pause = mac_dev->tx_pause_active;
+}
+
+static int dpa_set_pauseparam(struct net_device *net_dev,
+			      struct ethtool_pauseparam *epause)
+{
+	struct dpa_priv_s *priv;
+	struct mac_device *mac_dev;
+	struct phy_device *phy_dev;
+	int err;
+	u32 newadv, oldadv;
+	bool rx_pause, tx_pause;
+
+	priv = netdev_priv(net_dev);
+	mac_dev = priv->mac_dev;
+
+	phy_dev = mac_dev->phy_dev;
+	if (!phy_dev) {
+		netdev_err(net_dev, "phy device not initialized\n");
+		return -ENODEV;
+	}
+
+	if (!(phy_dev->supported & SUPPORTED_Pause) ||
+	    (!(phy_dev->supported & SUPPORTED_Asym_Pause) &&
+	    (epause->rx_pause != epause->tx_pause)))
+		return -EINVAL;
+
+	/* The MAC should know how to handle PAUSE frame autonegotiation before
+	 * adjust_link is triggered by a forced renegotiation of sym/asym PAUSE
+	 * settings.
+	 */
+	mac_dev->autoneg_pause = !!epause->autoneg;
+	mac_dev->rx_pause_req = !!epause->rx_pause;
+	mac_dev->tx_pause_req = !!epause->tx_pause;
+
+	/* Determine the sym/asym advertised PAUSE capabilities from the desired
+	 * rx/tx pause settings.
+	 */
+	newadv = 0;
+	if (epause->rx_pause)
+		newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
+	if (epause->tx_pause)
+		newadv |= ADVERTISED_Asym_Pause;
+
+	oldadv = phy_dev->advertising &
+			(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
+
+	/* If there are differences between the old and the new advertised
+	 * values, restart PHY autonegotiation and advertise the new values.
+	 */
+	if (oldadv != newadv) {
+		phy_dev->advertising &= ~(ADVERTISED_Pause
+				| ADVERTISED_Asym_Pause);
+		phy_dev->advertising |= newadv;
+		if (phy_dev->autoneg) {
+			err = phy_start_aneg(phy_dev);
+			if (err < 0)
+				netdev_err(net_dev, "phy_start_aneg() = %d\n",
+					   err);
+		}
+	}
+
+	fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
+	err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
+	if (err < 0)
+		netdev_err(net_dev, "set_mac_active_pause() = %d\n", err);
+
+	return err;
+}
+
+static int dpa_get_sset_count(struct net_device *net_dev, int type)
+{
+	unsigned int total_stats, num_stats;
+
+	num_stats   = num_online_cpus() + 1;
+	total_stats = num_stats * DPA_STATS_PERCPU_LEN + DPA_STATS_GLOBAL_LEN;
+
+	switch (type) {
+	case ETH_SS_STATS:
+		return total_stats;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void copy_stats(struct dpa_percpu_priv_s *percpu_priv, int num_cpus,
+			int crr_cpu, u64 bp_count, u64 *data)
+{
+	int num_values = num_cpus + 1;
+	int crr = 0;
+
+	/* update current CPU's stats and also add them to the total values */
+	data[crr * num_values + crr_cpu] = percpu_priv->in_interrupt;
+	data[crr++ * num_values + num_cpus] += percpu_priv->in_interrupt;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->stats.rx_packets;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.rx_packets;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->stats.tx_packets;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.tx_packets;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->tx_confirm;
+	data[crr++ * num_values + num_cpus] += percpu_priv->tx_confirm;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->tx_frag_skbuffs;
+	data[crr++ * num_values + num_cpus] += percpu_priv->tx_frag_skbuffs;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->stats.tx_errors;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.tx_errors;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->stats.rx_errors;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.rx_errors;
+
+	data[crr * num_values + crr_cpu] = bp_count;
+	data[crr++ * num_values + num_cpus] += bp_count;
+}
+
+static void dpa_get_ethtool_stats(struct net_device *net_dev,
+		struct ethtool_stats *stats, u64 *data)
+{
+	u64 bp_count, cg_time, cg_num, cg_status;
+	struct dpa_percpu_priv_s *percpu_priv;
+	struct qm_mcr_querycgr query_cgr;
+	struct dpa_rx_errors rx_errors;
+	struct dpa_ern_cnt ern_cnt;
+	struct dpa_priv_s *priv;
+	unsigned int num_cpus, offset;
+	struct dpa_bp *dpa_bp;
+	int total_stats, i;
+
+	total_stats = dpa_get_sset_count(net_dev, ETH_SS_STATS);
+	priv     = netdev_priv(net_dev);
+	dpa_bp   = priv->dpa_bp;
+	num_cpus = num_online_cpus();
+	bp_count = 0;
+
+	memset(&rx_errors, 0, sizeof(struct dpa_rx_errors));
+	memset(&ern_cnt, 0, sizeof(struct dpa_ern_cnt));
+	memset(data, 0, total_stats * sizeof(u64));
+
+	for_each_online_cpu(i) {
+		percpu_priv = per_cpu_ptr(priv->percpu_priv, i);
+
+		if (dpa_bp->percpu_count)
+			bp_count = *(per_cpu_ptr(dpa_bp->percpu_count, i));
+
+		rx_errors.dme += percpu_priv->rx_errors.dme;
+		rx_errors.fpe += percpu_priv->rx_errors.fpe;
+		rx_errors.fse += percpu_priv->rx_errors.fse;
+		rx_errors.phe += percpu_priv->rx_errors.phe;
+
+		ern_cnt.cg_tdrop     += percpu_priv->ern_cnt.cg_tdrop;
+		ern_cnt.wred         += percpu_priv->ern_cnt.wred;
+		ern_cnt.err_cond     += percpu_priv->ern_cnt.err_cond;
+		ern_cnt.early_window += percpu_priv->ern_cnt.early_window;
+		ern_cnt.late_window  += percpu_priv->ern_cnt.late_window;
+		ern_cnt.fq_tdrop     += percpu_priv->ern_cnt.fq_tdrop;
+		ern_cnt.fq_retired   += percpu_priv->ern_cnt.fq_retired;
+		ern_cnt.orp_zero     += percpu_priv->ern_cnt.orp_zero;
+
+		copy_stats(percpu_priv, num_cpus, i, bp_count, data);
+	}
+
+	offset = (num_cpus + 1) * DPA_STATS_PERCPU_LEN;
+	memcpy(data + offset, &rx_errors, sizeof(struct dpa_rx_errors));
+
+	offset += sizeof(struct dpa_rx_errors) / sizeof(u64);
+	memcpy(data + offset, &ern_cnt, sizeof(struct dpa_ern_cnt));
+
+	/* gather congestion related counters */
+	cg_num    = 0;
+	cg_status = 0;
+	cg_time   = jiffies_to_msecs(priv->cgr_data.congested_jiffies);
+	if (qman_query_cgr(&priv->cgr_data.cgr, &query_cgr) == 0) {
+		cg_num    = priv->cgr_data.cgr_congested_count;
+		cg_status = query_cgr.cgr.cs;
+
+		/* reset congestion stats (like QMan API does */
+		priv->cgr_data.congested_jiffies   = 0;
+		priv->cgr_data.cgr_congested_count = 0;
+	}
+
+	offset += sizeof(struct dpa_ern_cnt) / sizeof(u64);
+	data[offset++] = cg_time;
+	data[offset++] = cg_num;
+	data[offset++] = cg_status;
+}
+
+static void dpa_get_strings(struct net_device *net_dev, u32 stringset, u8 *data)
+{
+	unsigned int i, j, num_cpus, size;
+	char string_cpu[ETH_GSTRING_LEN];
+	u8 *strings;
+
+	strings   = data;
+	num_cpus  = num_online_cpus();
+	size      = DPA_STATS_GLOBAL_LEN * ETH_GSTRING_LEN;
+
+	for (i = 0; i < DPA_STATS_PERCPU_LEN; i++) {
+		for (j = 0; j < num_cpus; j++) {
+			snprintf(string_cpu, ETH_GSTRING_LEN, "%s [CPU %d]",
+				dpa_stats_percpu[i], j);
+			memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+			strings += ETH_GSTRING_LEN;
+		}
+		snprintf(string_cpu, ETH_GSTRING_LEN, "%s [TOTAL]",
+			dpa_stats_percpu[i]);
+		memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+		strings += ETH_GSTRING_LEN;
+	}
+	memcpy(strings, dpa_stats_global, size);
+}
+
+const struct ethtool_ops dpa_ethtool_ops = {
+	.get_settings = dpa_get_settings,
+	.set_settings = dpa_set_settings,
+	.get_drvinfo = dpa_get_drvinfo,
+	.get_msglevel = dpa_get_msglevel,
+	.set_msglevel = dpa_set_msglevel,
+	.nway_reset = dpa_nway_reset,
+	.get_pauseparam = dpa_get_pauseparam,
+	.set_pauseparam = dpa_set_pauseparam,
+	.get_link = ethtool_op_get_link,
+	.get_sset_count = dpa_get_sset_count,
+	.get_ethtool_stats = dpa_get_ethtool_stats,
+	.get_strings = dpa_get_strings,
+};