1 files changed, 582 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
new file mode 100644
index 000000000..769e936a2
--- /dev/null
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -0,0 +1,582 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
+/*
+ * Copyright 2008 - 2016 Freescale Semiconductor Inc.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/string.h>
+#include <linux/of_platform.h>
+#include <linux/net_tstamp.h>
+#include <linux/fsl/ptp_qoriq.h>
+
+#include "dpaa_eth.h"
+#include "mac.h"
+
+static const char dpaa_stats_percpu[][ETH_GSTRING_LEN] = {
+	"interrupts",
+	"rx packets",
+	"tx packets",
+	"tx confirm",
+	"tx S/G",
+	"tx error",
+	"rx error",
+	"rx dropped",
+	"tx dropped",
+};
+
+static char dpaa_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 DPAA_STATS_PERCPU_LEN ARRAY_SIZE(dpaa_stats_percpu)
+#define DPAA_STATS_GLOBAL_LEN ARRAY_SIZE(dpaa_stats_global)
+
+static int dpaa_get_link_ksettings(struct net_device *net_dev,
+				   struct ethtool_link_ksettings *cmd)
+{
+	if (!net_dev->phydev)
+		return 0;
+
+	phy_ethtool_ksettings_get(net_dev->phydev, cmd);
+
+	return 0;
+}
+
+static int dpaa_set_link_ksettings(struct net_device *net_dev,
+				   const struct ethtool_link_ksettings *cmd)
+{
+	int err;
+
+	if (!net_dev->phydev)
+		return -ENODEV;
+
+	err = phy_ethtool_ksettings_set(net_dev->phydev, cmd);
+	if (err < 0)
+		netdev_err(net_dev, "phy_ethtool_ksettings_set() = %d\n", err);
+
+	return err;
+}
+
+static void dpaa_get_drvinfo(struct net_device *net_dev,
+			     struct ethtool_drvinfo *drvinfo)
+{
+	strscpy(drvinfo->driver, KBUILD_MODNAME,
+		sizeof(drvinfo->driver));
+	strscpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent),
+		sizeof(drvinfo->bus_info));
+}
+
+static u32 dpaa_get_msglevel(struct net_device *net_dev)
+{
+	return ((struct dpaa_priv *)netdev_priv(net_dev))->msg_enable;
+}
+
+static void dpaa_set_msglevel(struct net_device *net_dev,
+			      u32 msg_enable)
+{
+	((struct dpaa_priv *)netdev_priv(net_dev))->msg_enable = msg_enable;
+}
+
+static int dpaa_nway_reset(struct net_device *net_dev)
+{
+	int err;
+
+	if (!net_dev->phydev)
+		return -ENODEV;
+
+	err = 0;
+	if (net_dev->phydev->autoneg) {
+		err = phy_start_aneg(net_dev->phydev);
+		if (err < 0)
+			netdev_err(net_dev, "phy_start_aneg() = %d\n",
+				   err);
+	}
+
+	return err;
+}
+
+static void dpaa_get_pauseparam(struct net_device *net_dev,
+				struct ethtool_pauseparam *epause)
+{
+	struct mac_device *mac_dev;
+	struct dpaa_priv *priv;
+
+	priv = netdev_priv(net_dev);
+	mac_dev = priv->mac_dev;
+
+	if (!net_dev->phydev)
+		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 dpaa_set_pauseparam(struct net_device *net_dev,
+			       struct ethtool_pauseparam *epause)
+{
+	struct mac_device *mac_dev;
+	struct phy_device *phydev;
+	bool rx_pause, tx_pause;
+	struct dpaa_priv *priv;
+	int err;
+
+	priv = netdev_priv(net_dev);
+	mac_dev = priv->mac_dev;
+
+	phydev = net_dev->phydev;
+	if (!phydev) {
+		netdev_err(net_dev, "phy device not initialized\n");
+		return -ENODEV;
+	}
+
+	if (!phy_validate_pause(phydev, epause))
+		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.
+	 */
+
+	phy_set_asym_pause(phydev, epause->rx_pause, epause->tx_pause);
+
+	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 dpaa_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 * (DPAA_STATS_PERCPU_LEN + 1) +
+			DPAA_STATS_GLOBAL_LEN;
+
+	switch (type) {
+	case ETH_SS_STATS:
+		return total_stats;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void copy_stats(struct dpaa_percpu_priv *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] = percpu_priv->stats.rx_dropped;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.rx_dropped;
+
+	data[crr * num_values + crr_cpu] = percpu_priv->stats.tx_dropped;
+	data[crr++ * num_values + num_cpus] += percpu_priv->stats.tx_dropped;
+
+	data[crr * num_values + crr_cpu] = bp_count;
+	data[crr++ * num_values + num_cpus] += bp_count;
+}
+
+static void dpaa_get_ethtool_stats(struct net_device *net_dev,
+				   struct ethtool_stats *stats, u64 *data)
+{
+	struct dpaa_percpu_priv *percpu_priv;
+	struct dpaa_rx_errors rx_errors;
+	unsigned int num_cpus, offset;
+	u64 bp_count, cg_time, cg_num;
+	struct dpaa_ern_cnt ern_cnt;
+	struct dpaa_bp *dpaa_bp;
+	struct dpaa_priv *priv;
+	int total_stats, i;
+	bool cg_status;
+
+	total_stats = dpaa_get_sset_count(net_dev, ETH_SS_STATS);
+	priv     = netdev_priv(net_dev);
+	num_cpus = num_online_cpus();
+
+	memset(&bp_count, 0, sizeof(bp_count));
+	memset(&rx_errors, 0, sizeof(struct dpaa_rx_errors));
+	memset(&ern_cnt, 0, sizeof(struct dpaa_ern_cnt));
+	memset(data, 0, total_stats * sizeof(u64));
+
+	for_each_online_cpu(i) {
+		percpu_priv = per_cpu_ptr(priv->percpu_priv, i);
+		dpaa_bp = priv->dpaa_bp;
+		if (!dpaa_bp->percpu_count)
+			continue;
+		bp_count = *(per_cpu_ptr(dpaa_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) * (DPAA_STATS_PERCPU_LEN + 1);
+	memcpy(data + offset, &rx_errors, sizeof(struct dpaa_rx_errors));
+
+	offset += sizeof(struct dpaa_rx_errors) / sizeof(u64);
+	memcpy(data + offset, &ern_cnt, sizeof(struct dpaa_ern_cnt));
+
+	/* gather congestion related counters */
+	cg_num    = 0;
+	cg_status = false;
+	cg_time   = jiffies_to_msecs(priv->cgr_data.congested_jiffies);
+	if (qman_query_cgr_congested(&priv->cgr_data.cgr, &cg_status) == 0) {
+		cg_num    = priv->cgr_data.cgr_congested_count;
+
+		/* reset congestion stats (like QMan API does */
+		priv->cgr_data.congested_jiffies   = 0;
+		priv->cgr_data.cgr_congested_count = 0;
+	}
+
+	offset += sizeof(struct dpaa_ern_cnt) / sizeof(u64);
+	data[offset++] = cg_time;
+	data[offset++] = cg_num;
+	data[offset++] = cg_status;
+}
+
+static void dpaa_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;
+
+	memset(string_cpu, 0, sizeof(string_cpu));
+	strings   = data;
+	num_cpus  = num_online_cpus();
+	size      = DPAA_STATS_GLOBAL_LEN * ETH_GSTRING_LEN;
+
+	for (i = 0; i < DPAA_STATS_PERCPU_LEN; i++) {
+		for (j = 0; j < num_cpus; j++) {
+			snprintf(string_cpu, ETH_GSTRING_LEN, "%s [CPU %d]",
+				 dpaa_stats_percpu[i], j);
+			memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+			strings += ETH_GSTRING_LEN;
+		}
+		snprintf(string_cpu, ETH_GSTRING_LEN, "%s [TOTAL]",
+			 dpaa_stats_percpu[i]);
+		memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+		strings += ETH_GSTRING_LEN;
+	}
+	for (j = 0; j < num_cpus; j++) {
+		snprintf(string_cpu, ETH_GSTRING_LEN,
+			 "bpool [CPU %d]", j);
+		memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+		strings += ETH_GSTRING_LEN;
+	}
+	snprintf(string_cpu, ETH_GSTRING_LEN, "bpool [TOTAL]");
+	memcpy(strings, string_cpu, ETH_GSTRING_LEN);
+	strings += ETH_GSTRING_LEN;
+
+	memcpy(strings, dpaa_stats_global, size);
+}
+
+static int dpaa_get_hash_opts(struct net_device *dev,
+			      struct ethtool_rxnfc *cmd)
+{
+	struct dpaa_priv *priv = netdev_priv(dev);
+
+	cmd->data = 0;
+
+	switch (cmd->flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+	case UDP_V4_FLOW:
+	case UDP_V6_FLOW:
+		if (priv->keygen_in_use)
+			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		fallthrough;
+	case IPV4_FLOW:
+	case IPV6_FLOW:
+	case SCTP_V4_FLOW:
+	case SCTP_V6_FLOW:
+	case AH_ESP_V4_FLOW:
+	case AH_ESP_V6_FLOW:
+	case AH_V4_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V4_FLOW:
+	case ESP_V6_FLOW:
+		if (priv->keygen_in_use)
+			cmd->data |= RXH_IP_SRC | RXH_IP_DST;
+		break;
+	default:
+		cmd->data = 0;
+		break;
+	}
+
+	return 0;
+}
+
+static int dpaa_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
+			  u32 *unused)
+{
+	int ret = -EOPNOTSUPP;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXFH:
+		ret = dpaa_get_hash_opts(dev, cmd);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static void dpaa_set_hash(struct net_device *net_dev, bool enable)
+{
+	struct mac_device *mac_dev;
+	struct fman_port *rxport;
+	struct dpaa_priv *priv;
+
+	priv = netdev_priv(net_dev);
+	mac_dev = priv->mac_dev;
+	rxport = mac_dev->port[0];
+
+	fman_port_use_kg_hash(rxport, enable);
+	priv->keygen_in_use = enable;
+}
+
+static int dpaa_set_hash_opts(struct net_device *dev,
+			      struct ethtool_rxnfc *nfc)
+{
+	int ret = -EINVAL;
+
+	/* we support hashing on IPv4/v6 src/dest IP and L4 src/dest port */
+	if (nfc->data &
+	    ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3))
+		return -EINVAL;
+
+	switch (nfc->flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+	case UDP_V4_FLOW:
+	case UDP_V6_FLOW:
+	case IPV4_FLOW:
+	case IPV6_FLOW:
+	case SCTP_V4_FLOW:
+	case SCTP_V6_FLOW:
+	case AH_ESP_V4_FLOW:
+	case AH_ESP_V6_FLOW:
+	case AH_V4_FLOW:
+	case AH_V6_FLOW:
+	case ESP_V4_FLOW:
+	case ESP_V6_FLOW:
+		dpaa_set_hash(dev, !!nfc->data);
+		ret = 0;
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static int dpaa_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
+{
+	int ret = -EOPNOTSUPP;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_SRXFH:
+		ret = dpaa_set_hash_opts(dev, cmd);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static int dpaa_get_ts_info(struct net_device *net_dev,
+			    struct ethtool_ts_info *info)
+{
+	struct device *dev = net_dev->dev.parent;
+	struct device_node *mac_node = dev->of_node;
+	struct device_node *fman_node = NULL, *ptp_node = NULL;
+	struct platform_device *ptp_dev = NULL;
+	struct ptp_qoriq *ptp = NULL;
+
+	info->phc_index = -1;
+
+	fman_node = of_get_parent(mac_node);
+	if (fman_node) {
+		ptp_node = of_parse_phandle(fman_node, "ptimer-handle", 0);
+		of_node_put(fman_node);
+	}
+
+	if (ptp_node) {
+		ptp_dev = of_find_device_by_node(ptp_node);
+		of_node_put(ptp_node);
+	}
+
+	if (ptp_dev)
+		ptp = platform_get_drvdata(ptp_dev);
+
+	if (ptp)
+		info->phc_index = ptp->phc_index;
+
+	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
+				SOF_TIMESTAMPING_RX_HARDWARE |
+				SOF_TIMESTAMPING_RAW_HARDWARE;
+	info->tx_types = (1 << HWTSTAMP_TX_OFF) |
+			 (1 << HWTSTAMP_TX_ON);
+	info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
+			   (1 << HWTSTAMP_FILTER_ALL);
+
+	return 0;
+}
+
+static int dpaa_get_coalesce(struct net_device *dev,
+			     struct ethtool_coalesce *c,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct qman_portal *portal;
+	u32 period;
+	u8 thresh;
+
+	portal = qman_get_affine_portal(smp_processor_id());
+	qman_portal_get_iperiod(portal, &period);
+	qman_dqrr_get_ithresh(portal, &thresh);
+
+	c->rx_coalesce_usecs = period;
+	c->rx_max_coalesced_frames = thresh;
+
+	return 0;
+}
+
+static int dpaa_set_coalesce(struct net_device *dev,
+			     struct ethtool_coalesce *c,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	const cpumask_t *cpus = qman_affine_cpus();
+	bool needs_revert[NR_CPUS] = {false};
+	struct qman_portal *portal;
+	u32 period, prev_period;
+	u8 thresh, prev_thresh;
+	int cpu, res;
+
+	period = c->rx_coalesce_usecs;
+	thresh = c->rx_max_coalesced_frames;
+
+	/* save previous values */
+	portal = qman_get_affine_portal(smp_processor_id());
+	qman_portal_get_iperiod(portal, &prev_period);
+	qman_dqrr_get_ithresh(portal, &prev_thresh);
+
+	/* set new values */
+	for_each_cpu_and(cpu, cpus, cpu_online_mask) {
+		portal = qman_get_affine_portal(cpu);
+		res = qman_portal_set_iperiod(portal, period);
+		if (res)
+			goto revert_values;
+		res = qman_dqrr_set_ithresh(portal, thresh);
+		if (res) {
+			qman_portal_set_iperiod(portal, prev_period);
+			goto revert_values;
+		}
+		needs_revert[cpu] = true;
+	}
+
+	return 0;
+
+revert_values:
+	/* restore previous values */
+	for_each_cpu_and(cpu, cpus, cpu_online_mask) {
+		if (!needs_revert[cpu])
+			continue;
+		portal = qman_get_affine_portal(cpu);
+		/* previous values will not fail, ignore return value */
+		qman_portal_set_iperiod(portal, prev_period);
+		qman_dqrr_set_ithresh(portal, prev_thresh);
+	}
+
+	return res;
+}
+
+const struct ethtool_ops dpaa_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
+				     ETHTOOL_COALESCE_RX_MAX_FRAMES,
+	.get_drvinfo = dpaa_get_drvinfo,
+	.get_msglevel = dpaa_get_msglevel,
+	.set_msglevel = dpaa_set_msglevel,
+	.nway_reset = dpaa_nway_reset,
+	.get_pauseparam = dpaa_get_pauseparam,
+	.set_pauseparam = dpaa_set_pauseparam,
+	.get_link = ethtool_op_get_link,
+	.get_sset_count = dpaa_get_sset_count,
+	.get_ethtool_stats = dpaa_get_ethtool_stats,
+	.get_strings = dpaa_get_strings,
+	.get_link_ksettings = dpaa_get_link_ksettings,
+	.set_link_ksettings = dpaa_set_link_ksettings,
+	.get_rxnfc = dpaa_get_rxnfc,
+	.set_rxnfc = dpaa_set_rxnfc,
+	.get_ts_info = dpaa_get_ts_info,
+	.get_coalesce = dpaa_get_coalesce,
+	.set_coalesce = dpaa_set_coalesce,
+};