Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 291 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qualcomm/emac/emac-ethtool.c b/drivers/net/ethernet/qualcomm/emac/emac-ethtool.c
new file mode 100644
index 000000000..c8c6231b8
--- /dev/null
+++ b/drivers/net/ethernet/qualcomm/emac/emac-ethtool.c
@@ -0,0 +1,291 @@
+/* Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+
+#include "emac.h"
+
+static const char * const emac_ethtool_stat_strings[] = {
+	"rx_ok",
+	"rx_bcast",
+	"rx_mcast",
+	"rx_pause",
+	"rx_ctrl",
+	"rx_fcs_err",
+	"rx_len_err",
+	"rx_byte_cnt",
+	"rx_runt",
+	"rx_frag",
+	"rx_sz_64",
+	"rx_sz_65_127",
+	"rx_sz_128_255",
+	"rx_sz_256_511",
+	"rx_sz_512_1023",
+	"rx_sz_1024_1518",
+	"rx_sz_1519_max",
+	"rx_sz_ov",
+	"rx_rxf_ov",
+	"rx_align_err",
+	"rx_bcast_byte_cnt",
+	"rx_mcast_byte_cnt",
+	"rx_err_addr",
+	"rx_crc_align",
+	"rx_jabbers",
+	"tx_ok",
+	"tx_bcast",
+	"tx_mcast",
+	"tx_pause",
+	"tx_exc_defer",
+	"tx_ctrl",
+	"tx_defer",
+	"tx_byte_cnt",
+	"tx_sz_64",
+	"tx_sz_65_127",
+	"tx_sz_128_255",
+	"tx_sz_256_511",
+	"tx_sz_512_1023",
+	"tx_sz_1024_1518",
+	"tx_sz_1519_max",
+	"tx_1_col",
+	"tx_2_col",
+	"tx_late_col",
+	"tx_abort_col",
+	"tx_underrun",
+	"tx_rd_eop",
+	"tx_len_err",
+	"tx_trunc",
+	"tx_bcast_byte",
+	"tx_mcast_byte",
+	"tx_col",
+};
+
+#define EMAC_STATS_LEN	ARRAY_SIZE(emac_ethtool_stat_strings)
+
+static u32 emac_get_msglevel(struct net_device *netdev)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	return adpt->msg_enable;
+}
+
+static void emac_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	adpt->msg_enable = data;
+}
+
+static int emac_get_sset_count(struct net_device *netdev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_PRIV_FLAGS:
+		return 1;
+	case ETH_SS_STATS:
+		return EMAC_STATS_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void emac_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
+{
+	unsigned int i;
+
+	switch (stringset) {
+	case ETH_SS_PRIV_FLAGS:
+		strcpy(data, "single-pause-mode");
+		break;
+
+	case ETH_SS_STATS:
+		for (i = 0; i < EMAC_STATS_LEN; i++) {
+			strlcpy(data, emac_ethtool_stat_strings[i],
+				ETH_GSTRING_LEN);
+			data += ETH_GSTRING_LEN;
+		}
+		break;
+	}
+}
+
+static void emac_get_ethtool_stats(struct net_device *netdev,
+				   struct ethtool_stats *stats,
+				   u64 *data)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	spin_lock(&adpt->stats.lock);
+
+	emac_update_hw_stats(adpt);
+	memcpy(data, &adpt->stats, EMAC_STATS_LEN * sizeof(u64));
+
+	spin_unlock(&adpt->stats.lock);
+}
+
+static int emac_nway_reset(struct net_device *netdev)
+{
+	struct phy_device *phydev = netdev->phydev;
+
+	if (!phydev)
+		return -ENODEV;
+
+	return genphy_restart_aneg(phydev);
+}
+
+static void emac_get_ringparam(struct net_device *netdev,
+			       struct ethtool_ringparam *ring)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	ring->rx_max_pending = EMAC_MAX_RX_DESCS;
+	ring->tx_max_pending = EMAC_MAX_TX_DESCS;
+	ring->rx_pending = adpt->rx_desc_cnt;
+	ring->tx_pending = adpt->tx_desc_cnt;
+}
+
+static int emac_set_ringparam(struct net_device *netdev,
+			      struct ethtool_ringparam *ring)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	/* We don't have separate queues/rings for small/large frames, so
+	 * reject any attempt to specify those values separately.
+	 */
+	if (ring->rx_mini_pending || ring->rx_jumbo_pending)
+		return -EINVAL;
+
+	adpt->tx_desc_cnt =
+		clamp_val(ring->tx_pending, EMAC_MIN_TX_DESCS, EMAC_MAX_TX_DESCS);
+
+	adpt->rx_desc_cnt =
+		clamp_val(ring->rx_pending, EMAC_MIN_RX_DESCS, EMAC_MAX_RX_DESCS);
+
+	if (netif_running(netdev))
+		return emac_reinit_locked(adpt);
+
+	return 0;
+}
+
+static void emac_get_pauseparam(struct net_device *netdev,
+				struct ethtool_pauseparam *pause)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	pause->autoneg = adpt->automatic ? AUTONEG_ENABLE : AUTONEG_DISABLE;
+	pause->rx_pause = adpt->rx_flow_control ? 1 : 0;
+	pause->tx_pause = adpt->tx_flow_control ? 1 : 0;
+}
+
+static int emac_set_pauseparam(struct net_device *netdev,
+			       struct ethtool_pauseparam *pause)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	adpt->automatic = pause->autoneg == AUTONEG_ENABLE;
+	adpt->rx_flow_control = pause->rx_pause != 0;
+	adpt->tx_flow_control = pause->tx_pause != 0;
+
+	if (netif_running(netdev))
+		return emac_reinit_locked(adpt);
+
+	return 0;
+}
+
+/* Selected registers that might want to track during runtime. */
+static const u16 emac_regs[] = {
+	EMAC_DMA_MAS_CTRL,
+	EMAC_MAC_CTRL,
+	EMAC_TXQ_CTRL_0,
+	EMAC_RXQ_CTRL_0,
+	EMAC_DMA_CTRL,
+	EMAC_INT_MASK,
+	EMAC_AXI_MAST_CTRL,
+	EMAC_CORE_HW_VERSION,
+	EMAC_MISC_CTRL,
+};
+
+/* Every time emac_regs[] above is changed, increase this version number. */
+#define EMAC_REGS_VERSION	0
+
+#define EMAC_MAX_REG_SIZE	ARRAY_SIZE(emac_regs)
+
+static void emac_get_regs(struct net_device *netdev,
+			  struct ethtool_regs *regs, void *buff)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+	u32 *val = buff;
+	unsigned int i;
+
+	regs->version = EMAC_REGS_VERSION;
+	regs->len = EMAC_MAX_REG_SIZE * sizeof(u32);
+
+	for (i = 0; i < EMAC_MAX_REG_SIZE; i++)
+		val[i] = readl(adpt->base + emac_regs[i]);
+}
+
+static int emac_get_regs_len(struct net_device *netdev)
+{
+	return EMAC_MAX_REG_SIZE * sizeof(u32);
+}
+
+#define EMAC_PRIV_ENABLE_SINGLE_PAUSE	BIT(0)
+
+static int emac_set_priv_flags(struct net_device *netdev, u32 flags)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	adpt->single_pause_mode = !!(flags & EMAC_PRIV_ENABLE_SINGLE_PAUSE);
+
+	if (netif_running(netdev))
+		return emac_reinit_locked(adpt);
+
+	return 0;
+}
+
+static u32 emac_get_priv_flags(struct net_device *netdev)
+{
+	struct emac_adapter *adpt = netdev_priv(netdev);
+
+	return adpt->single_pause_mode ? EMAC_PRIV_ENABLE_SINGLE_PAUSE : 0;
+}
+
+static const struct ethtool_ops emac_ethtool_ops = {
+	.get_link_ksettings = phy_ethtool_get_link_ksettings,
+	.set_link_ksettings = phy_ethtool_set_link_ksettings,
+
+	.get_msglevel    = emac_get_msglevel,
+	.set_msglevel    = emac_set_msglevel,
+
+	.get_sset_count  = emac_get_sset_count,
+	.get_strings = emac_get_strings,
+	.get_ethtool_stats = emac_get_ethtool_stats,
+
+	.get_ringparam = emac_get_ringparam,
+	.set_ringparam = emac_set_ringparam,
+
+	.get_pauseparam = emac_get_pauseparam,
+	.set_pauseparam = emac_set_pauseparam,
+
+	.nway_reset = emac_nway_reset,
+
+	.get_link = ethtool_op_get_link,
+
+	.get_regs_len    = emac_get_regs_len,
+	.get_regs        = emac_get_regs,
+
+	.set_priv_flags = emac_set_priv_flags,
+	.get_priv_flags = emac_get_priv_flags,
+};
+
+void emac_set_ethtool_ops(struct net_device *netdev)
+{
+	netdev->ethtool_ops = &emac_ethtool_ops;
+}