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Date: Fri, 20 Dec 2013 19:42:56 -0800
From: Iyappan Subramanian <isubramanian@....com>
To: davem@...emloft.net
Cc: gregkh@...uxfoundation.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, jcm@...hat.com,
patches@....com, Iyappan Subramanian <isubramanian@....com>,
Ravi Patel <rapatel@....com>, Keyur Chudgar <kchudgar@....com>
Subject: [PATCH 5/5] drivers: net: APM X-Gene SoC Ethernet driver ethtool support
Ethtool support for APM X-Gene SoC ethernet driver.
Signed-off-by: Iyappan Subramanian <isubramanian@....com>
Signed-off-by: Ravi Patel <rapatel@....com>
Signed-off-by: Keyur Chudgar <kchudgar@....com>
---
drivers/net/ethernet/apm/xgene/Makefile | 3 +-
drivers/net/ethernet/apm/xgene/xgene_enet_csr.h | 4 +
drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 1 +
drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 +
drivers/net/ethernet/apm/xgene/xgene_enet_tools.c | 296 +++++++++++++++++++++
5 files changed, 304 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/apm/xgene/xgene_enet_tools.c
diff --git a/drivers/net/ethernet/apm/xgene/Makefile b/drivers/net/ethernet/apm/xgene/Makefile
index 091547e..472710d 100644
--- a/drivers/net/ethernet/apm/xgene/Makefile
+++ b/drivers/net/ethernet/apm/xgene/Makefile
@@ -6,6 +6,7 @@ xgene-enet-objs := \
xgene_enet_common.o \
xgene_enet_mac.o \
xgene_enet_main.o \
- xgene_enet_err.o
+ xgene_enet_err.o \
+ xgene_enet_tools.o
obj-$(CONFIG_NET_XGENE) += xgene-enet.o
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_csr.h b/drivers/net/ethernet/apm/xgene/xgene_enet_csr.h
index 858d155..5ca0d81 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_csr.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_csr.h
@@ -357,6 +357,10 @@
#define INTERFACE_CONTROL_ADDR 0x00000038
#define STATION_ADDR0_ADDR 0x00000040
#define STATION_ADDR1_ADDR 0x00000044
+#define RX_FLOW_EN1_MASK 0x00000020
+#define TX_FLOW_EN1_MASK 0x00000010
+#define RX_FLOW_EN1_RD(src) (((src) & 0x00000020)>>5)
+#define TX_FLOW_EN1_RD(src) (((src) & 0x00000010)>>4)
#define SCAN_CYCLE_MASK 0x00000002
#define SOFT_RESET1_MASK 0x80000000
#define MAX_FRAME_LEN_SET(dst, src) \
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index 90f53b8..77d3fd8 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
@@ -1416,6 +1416,7 @@ static int xgene_enet_init_hw(struct xgene_enet_pdev *pdev)
/* Ethtool checks the capabilities/features in hw_features flag */
ndev->hw_features = ndev->features;
+ SET_ETHTOOL_OPS(ndev, &xgene_ethtool_ops);
rc = register_netdev(ndev);
if (rc) {
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
index b25bb37..b95f129 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
@@ -173,4 +173,5 @@ void xgene_enet_init_priv(struct xgene_enet_priv *priv);
int xgene_enet_parse_error(u8 LErr, int qid);
void xgene_enet_register_err_irqs(struct net_device *ndev);
+extern const struct ethtool_ops xgene_ethtool_ops;
#endif /* __XGENE_ENET_MAIN_H__ */
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_tools.c b/drivers/net/ethernet/apm/xgene/xgene_enet_tools.c
new file mode 100644
index 0000000..d99f42b
--- /dev/null
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_tools.c
@@ -0,0 +1,296 @@
+/* AppliedMicro X-Gene SoC Ethernet Driver
+ *
+ * Copyright (c) 2013, Applied Micro Circuits Corporation
+ * Authors: Hrishikesh Karanjikar <hkaranjikar@....com>
+ * Ravi Patel <rapatel@....com>
+ * Iyappan Subramanian <isubramanian@....com>
+ * Keyur Chudgar <kchudgar@....com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License 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/mii.h>
+#include <linux/phy.h>
+#include "xgene_enet_csr.h"
+#include "xgene_enet_main.h"
+
+struct xgene_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+};
+
+static const struct xgene_stats xgene_gstrings_stats[] = {
+ { "rx_bytes",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_byte_count),
+ offsetof(struct xgene_enet_pdev, stats.rx_stats.rx_byte_count)
+ },
+ { "rx_packets",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_packet_count),
+ offsetof(struct xgene_enet_pdev, stats.rx_stats.rx_packet_count)
+ },
+ { "rx_fcs_err",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_fcs_err_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_fcs_err_count)
+ },
+ { "rx_alignment_err",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_alignment_err_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_alignment_err_pkt_count)
+ },
+ { "rx_frm_len_err",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_frm_len_err_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_frm_len_err_pkt_count)
+ },
+ { "rx_undersize",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_undersize_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_undersize_pkt_count)
+ },
+ { "rx_oversize",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_oversize_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_oversize_pkt_count)
+ },
+ { "rx_drop",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.rx_stats.rx_drop_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.rx_stats.rx_drop_pkt_count)
+ },
+ { "tx_bytes",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.tx_stats.tx_byte_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.tx_stats.tx_byte_count)
+ },
+ { "tx_packets",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.tx_stats.tx_pkt_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.tx_stats.tx_pkt_count)
+ },
+ { "tx_drop",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.tx_stats.tx_drop_frm_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.tx_stats.tx_drop_frm_count)
+ },
+ { "tx_fcs_err",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.tx_stats.tx_fcs_err_frm_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.tx_stats.tx_fcs_err_frm_count)
+ },
+ { "tx_undersize",
+ FIELD_SIZEOF(struct xgene_enet_pdev,
+ stats.tx_stats.tx_undersize_frm_count),
+ offsetof(struct xgene_enet_pdev,
+ stats.tx_stats.tx_undersize_frm_count)
+ },
+};
+
+#define XGENE_GLOBAL_STATS_LEN ARRAY_SIZE(xgene_gstrings_stats)
+
+/* Ethtool APIs */
+static int xgene_ethtool_get_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct phy_device *phydev = pdev->phy_dev;
+ struct xgene_enet_priv *priv = &pdev->priv;
+
+ if (priv->phy_mode == PHY_MODE_RGMII) {
+ if (!phydev)
+ return -ENODEV;
+ return phy_ethtool_gset(phydev, cmd);
+ }
+ return 0;
+}
+
+static int xgene_ethtool_set_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct phy_device *phydev = pdev->phy_dev;
+ struct xgene_enet_priv *priv = &pdev->priv;
+
+ if (priv->phy_mode == PHY_MODE_RGMII) {
+ if (!phydev)
+ return -ENODEV;
+ return phy_ethtool_sset(phydev, cmd);
+ }
+ return 0;
+}
+
+static int xgene_ethtool_set_pauseparam(struct net_device *ndev,
+ struct ethtool_pauseparam *pp)
+{
+ u32 data;
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct xgene_enet_priv *priv = &pdev->priv;
+
+ xgene_enet_rd(priv, BLOCK_MCX_MAC, MAC_CONFIG_1_ADDR, &data);
+
+ /* Modify value to set or reset rx flow control */
+ if (pp->rx_pause)
+ data |= RX_FLOW_EN1_MASK;
+ else
+ data &= ~RX_FLOW_EN1_MASK;
+
+ /* Modify value to set or reset tx flow control */
+ if (pp->tx_pause)
+ data |= TX_FLOW_EN1_MASK;
+ else
+ data &= ~TX_FLOW_EN1_MASK;
+
+ xgene_enet_wr(priv, BLOCK_MCX_MAC, MAC_CONFIG_1_ADDR, data);
+
+ return 0;
+}
+
+static void xgene_ethtool_get_pauseparam(struct net_device *ndev,
+ struct ethtool_pauseparam *pp)
+{
+ u32 data;
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct xgene_enet_priv *priv = &pdev->priv;
+
+ xgene_enet_rd(priv, BLOCK_MCX_MAC, MAC_CONFIG_1_ADDR, &data);
+ pp->rx_pause = RX_FLOW_EN1_RD(data);
+
+ xgene_enet_rd(priv, BLOCK_MCX_MAC, MAC_CONFIG_1_ADDR, &data);
+ pp->tx_pause = TX_FLOW_EN1_RD(data);
+}
+
+static int xgene_ethtool_nway_reset(struct net_device *ndev)
+{
+ u32 data = 0, retry = 0;
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct xgene_enet_priv *priv = &pdev->priv;
+
+ if (priv->phy_mode == PHY_MODE_RGMII)
+ mutex_lock(&pdev->mdio_bus->mdio_lock);
+
+ /* Power-down PHY */
+ data = MII_CR_POWER_DOWN;
+ xgene_genericmiiphy_write(priv, priv->phy_addr,
+ MII_CTRL_REG, data);
+
+ /* Power-up PHY */
+ data = 0x0;
+ xgene_genericmiiphy_write(priv, priv->phy_addr,
+ MII_CTRL_REG, data);
+
+ /* Reset PHY */
+ data = MII_CR_RESET;
+ xgene_genericmiiphy_write(priv, priv->phy_addr,
+ MII_CTRL_REG, data);
+
+ /* PHY reset may take 100 ms */
+ retry = 100;
+ do {
+ xgene_genericmiiphy_read(priv, priv->phy_addr,
+ MII_CTRL_REG, &data);
+ usleep_range(1000, 2000);
+ } while (--retry && (data & MII_CR_RESET));
+
+ xgene_genericmiiphy_write(priv, priv->phy_addr, MII_CTRL_REG,
+ MII_CR_AUTO_EN|MII_CR_RESTART|MII_CR_FDX);
+
+ priv->autoneg_set = 1;
+ priv->speed = XGENE_ENET_SPEED_1000;
+ priv->mac_init(priv, ndev->dev_addr, priv->speed,
+ HW_MTU(ndev->mtu), priv->crc);
+
+ if (priv->phy_mode == PHY_MODE_RGMII)
+ mutex_unlock(&pdev->mdio_bus->mdio_lock);
+
+ return 0;
+}
+
+static void xgene_get_strings(struct net_device *ndev, u32 stringset,
+ u8 *data)
+{
+ u8 *p = data;
+ int i;
+
+ switch (stringset) {
+ case ETH_SS_TEST:
+ case ETH_SS_STATS:
+ for (i = 0; i < XGENE_GLOBAL_STATS_LEN; i++) {
+ memcpy(p, xgene_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ p += ETH_GSTRING_LEN;
+ }
+ break;
+ }
+}
+
+static int xgene_get_sset_count(struct net_device *ndev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_TEST:
+ return XGENE_GLOBAL_STATS_LEN;
+ case ETH_SS_STATS:
+ return XGENE_GLOBAL_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+}
+
+static void xgene_ethtool_get_ethtool_stats(struct net_device *ndev,
+ struct ethtool_stats *ethtool_stats,
+ u64 *data)
+{
+
+ struct xgene_enet_pdev *pdev = netdev_priv(ndev);
+ struct xgene_enet_priv *priv = &pdev->priv;
+ struct xgene_enet_detailed_stats *stats = &pdev->stats;
+ int i;
+
+ xgene_enet_get_stats(priv, stats);
+ for (i = 0; i < XGENE_GLOBAL_STATS_LEN; i++) {
+ char *p = (char *)pdev + xgene_gstrings_stats[i].stat_offset;
+ data[i] = (xgene_gstrings_stats[i].sizeof_stat ==
+ sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
+ }
+}
+
+static void xgene_ethtool_get_drvinfo(struct net_device *ndev,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, ndev->name);
+ strcpy(info->version, XGENE_ENET_DRIVER_VERSION);
+ strcpy(info->fw_version, "N/A");
+}
+
+const struct ethtool_ops xgene_ethtool_ops = {
+ .get_settings = xgene_ethtool_get_settings,
+ .set_settings = xgene_ethtool_set_settings,
+ .get_drvinfo = xgene_ethtool_get_drvinfo,
+ .nway_reset = xgene_ethtool_nway_reset,
+ .get_pauseparam = xgene_ethtool_get_pauseparam,
+ .set_pauseparam = xgene_ethtool_set_pauseparam,
+ .get_ethtool_stats = xgene_ethtool_get_ethtool_stats,
+ .get_sset_count = xgene_get_sset_count,
+ .get_strings = xgene_get_strings,
+ .get_link = ethtool_op_get_link,
+};
--
1.7.9.5
--
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