net: Add Gigabit Ethernet driver of Topcliff PCH

Signed-off-by: Masayuki Ohtake <masa-korg@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 584 insertions, 0 deletions

diff --git a/drivers/net/pch_gbe/pch_gbe_ethtool.c b/drivers/net/pch_gbe/pch_gbe_ethtool.c
new file mode 100644
index 000000000000..e06c6aea4527
--- /dev/null
+++ b/drivers/net/pch_gbe/pch_gbe_ethtool.c
@@ -0,0 +1,584 @@
+/*
+ * Copyright (C) 1999 - 2010 Intel Corporation.
+ * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
+ *
+ * This code was derived from the Intel e1000e Linux driver.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
+ */
+#include "pch_gbe.h"
+#include "pch_gbe_api.h"
+
+/**
+ * pch_gbe_stats - Stats item infomation
+ */
+struct pch_gbe_stats {
+	char string[ETH_GSTRING_LEN];
+	size_t size;
+	size_t offset;
+};
+
+#define PCH_GBE_STAT(m)						\
+{								\
+	.string = #m,						\
+	.size = FIELD_SIZEOF(struct pch_gbe_hw_stats, m),	\
+	.offset = offsetof(struct pch_gbe_hw_stats, m),		\
+}
+
+/**
+ * pch_gbe_gstrings_stats - ethtool information status name list
+ */
+static const struct pch_gbe_stats pch_gbe_gstrings_stats[] = {
+	PCH_GBE_STAT(rx_packets),
+	PCH_GBE_STAT(tx_packets),
+	PCH_GBE_STAT(rx_bytes),
+	PCH_GBE_STAT(tx_bytes),
+	PCH_GBE_STAT(rx_errors),
+	PCH_GBE_STAT(tx_errors),
+	PCH_GBE_STAT(rx_dropped),
+	PCH_GBE_STAT(tx_dropped),
+	PCH_GBE_STAT(multicast),
+	PCH_GBE_STAT(collisions),
+	PCH_GBE_STAT(rx_crc_errors),
+	PCH_GBE_STAT(rx_frame_errors),
+	PCH_GBE_STAT(rx_alloc_buff_failed),
+	PCH_GBE_STAT(tx_length_errors),
+	PCH_GBE_STAT(tx_aborted_errors),
+	PCH_GBE_STAT(tx_carrier_errors),
+	PCH_GBE_STAT(tx_timeout_count),
+	PCH_GBE_STAT(tx_restart_count),
+	PCH_GBE_STAT(intr_rx_dsc_empty_count),
+	PCH_GBE_STAT(intr_rx_frame_err_count),
+	PCH_GBE_STAT(intr_rx_fifo_err_count),
+	PCH_GBE_STAT(intr_rx_dma_err_count),
+	PCH_GBE_STAT(intr_tx_fifo_err_count),
+	PCH_GBE_STAT(intr_tx_dma_err_count),
+	PCH_GBE_STAT(intr_tcpip_err_count)
+};
+
+#define PCH_GBE_QUEUE_STATS_LEN 0
+#define PCH_GBE_GLOBAL_STATS_LEN	ARRAY_SIZE(pch_gbe_gstrings_stats)
+#define PCH_GBE_STATS_LEN (PCH_GBE_GLOBAL_STATS_LEN + PCH_GBE_QUEUE_STATS_LEN)
+
+#define PCH_GBE_MAC_REGS_LEN    (sizeof(struct pch_gbe_regs) / 4)
+#define PCH_GBE_REGS_LEN        (PCH_GBE_MAC_REGS_LEN + PCH_GBE_PHY_REGS_LEN)
+/**
+ * pch_gbe_get_settings - Get device-specific settings
+ * @netdev: Network interface device structure
+ * @ecmd:   Ethtool command
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_get_settings(struct net_device *netdev,
+				 struct ethtool_cmd *ecmd)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	int ret;
+
+	ret = mii_ethtool_gset(&adapter->mii, ecmd);
+	ecmd->supported &= ~(SUPPORTED_TP | SUPPORTED_1000baseT_Half);
+	ecmd->advertising &= ~(ADVERTISED_TP | ADVERTISED_1000baseT_Half);
+
+	if (!netif_carrier_ok(adapter->netdev))
+		ecmd->speed = -1;
+	return ret;
+}
+
+/**
+ * pch_gbe_set_settings - Set device-specific settings
+ * @netdev: Network interface device structure
+ * @ecmd:   Ethtool command
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_settings(struct net_device *netdev,
+				 struct ethtool_cmd *ecmd)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_hw *hw = &adapter->hw;
+	int ret;
+
+	pch_gbe_hal_write_phy_reg(hw, MII_BMCR, BMCR_RESET);
+
+	if (ecmd->speed == -1)
+		ecmd->speed = SPEED_1000;
+		ecmd->duplex = DUPLEX_FULL;
+	ret = mii_ethtool_sset(&adapter->mii, ecmd);
+	if (ret) {
+		pr_err("Error: mii_ethtool_sset\n");
+		return ret;
+	}
+	hw->mac.link_speed = ecmd->speed;
+	hw->mac.link_duplex = ecmd->duplex;
+	hw->phy.autoneg_advertised = ecmd->advertising;
+	hw->mac.autoneg = ecmd->autoneg;
+	pch_gbe_hal_phy_sw_reset(hw);
+
+	/* reset the link */
+	if (netif_running(adapter->netdev)) {
+		pch_gbe_down(adapter);
+		ret = pch_gbe_up(adapter);
+	} else {
+		pch_gbe_reset(adapter);
+	}
+	return ret;
+}
+
+/**
+ * pch_gbe_get_regs_len - Report the size of device registers
+ * @netdev: Network interface device structure
+ * Returns: the size of device registers.
+ */
+static int pch_gbe_get_regs_len(struct net_device *netdev)
+{
+	return PCH_GBE_REGS_LEN * (int)sizeof(u32);
+}
+
+/**
+ * pch_gbe_get_drvinfo - Report driver information
+ * @netdev:  Network interface device structure
+ * @drvinfo: Driver information structure
+ */
+static void pch_gbe_get_drvinfo(struct net_device *netdev,
+				 struct ethtool_drvinfo *drvinfo)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	strcpy(drvinfo->driver, KBUILD_MODNAME);
+	strcpy(drvinfo->version, pch_driver_version);
+	strcpy(drvinfo->fw_version, "N/A");
+	strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
+	drvinfo->regdump_len = pch_gbe_get_regs_len(netdev);
+}
+
+/**
+ * pch_gbe_get_regs - Get device registers
+ * @netdev: Network interface device structure
+ * @regs:   Ethtool register structure
+ * @p:      Buffer pointer of read device register date
+ */
+static void pch_gbe_get_regs(struct net_device *netdev,
+				struct ethtool_regs *regs, void *p)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_hw *hw = &adapter->hw;
+	struct pci_dev *pdev = adapter->pdev;
+	u32 *regs_buff = p;
+	u16 i, tmp;
+
+	regs->version = 0x1000000 | (__u32)pdev->revision << 16 | pdev->device;
+	for (i = 0; i < PCH_GBE_MAC_REGS_LEN; i++)
+		*regs_buff++ = ioread32(&hw->reg->INT_ST + i);
+	/* PHY register */
+	for (i = 0; i < PCH_GBE_PHY_REGS_LEN; i++) {
+		pch_gbe_hal_read_phy_reg(&adapter->hw, i, &tmp);
+		*regs_buff++ = tmp;
+	}
+}
+
+/**
+ * pch_gbe_get_wol - Report whether Wake-on-Lan is enabled
+ * @netdev: Network interface device structure
+ * @wol:    Wake-on-Lan information
+ */
+static void pch_gbe_get_wol(struct net_device *netdev,
+				struct ethtool_wolinfo *wol)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
+	wol->wolopts = 0;
+
+	if ((adapter->wake_up_evt & PCH_GBE_WLC_IND))
+		wol->wolopts |= WAKE_UCAST;
+	if ((adapter->wake_up_evt & PCH_GBE_WLC_MLT))
+		wol->wolopts |= WAKE_MCAST;
+	if ((adapter->wake_up_evt & PCH_GBE_WLC_BR))
+		wol->wolopts |= WAKE_BCAST;
+	if ((adapter->wake_up_evt & PCH_GBE_WLC_MP))
+		wol->wolopts |= WAKE_MAGIC;
+}
+
+/**
+ * pch_gbe_set_wol - Turn Wake-on-Lan on or off
+ * @netdev: Network interface device structure
+ * @wol:    Pointer of wake-on-Lan information straucture
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_wol(struct net_device *netdev,
+				struct ethtool_wolinfo *wol)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	if ((wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE)))
+		return -EOPNOTSUPP;
+	/* these settings will always override what we currently have */
+	adapter->wake_up_evt = 0;
+
+	if ((wol->wolopts & WAKE_UCAST))
+		adapter->wake_up_evt |= PCH_GBE_WLC_IND;
+	if ((wol->wolopts & WAKE_MCAST))
+		adapter->wake_up_evt |= PCH_GBE_WLC_MLT;
+	if ((wol->wolopts & WAKE_BCAST))
+		adapter->wake_up_evt |= PCH_GBE_WLC_BR;
+	if ((wol->wolopts & WAKE_MAGIC))
+		adapter->wake_up_evt |= PCH_GBE_WLC_MP;
+	return 0;
+}
+
+/**
+ * pch_gbe_nway_reset - Restart autonegotiation
+ * @netdev: Network interface device structure
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_nway_reset(struct net_device *netdev)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	return mii_nway_restart(&adapter->mii);
+}
+
+/**
+ * pch_gbe_get_ringparam - Report ring sizes
+ * @netdev:  Network interface device structure
+ * @ring:    Ring param structure
+ */
+static void pch_gbe_get_ringparam(struct net_device *netdev,
+					struct ethtool_ringparam *ring)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_tx_ring *txdr = adapter->tx_ring;
+	struct pch_gbe_rx_ring *rxdr = adapter->rx_ring;
+
+	ring->rx_max_pending = PCH_GBE_MAX_RXD;
+	ring->tx_max_pending = PCH_GBE_MAX_TXD;
+	ring->rx_mini_max_pending = 0;
+	ring->rx_jumbo_max_pending = 0;
+	ring->rx_pending = rxdr->count;
+	ring->tx_pending = txdr->count;
+	ring->rx_mini_pending = 0;
+	ring->rx_jumbo_pending = 0;
+}
+
+/**
+ * pch_gbe_set_ringparam - Set ring sizes
+ * @netdev:  Network interface device structure
+ * @ring:    Ring param structure
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_ringparam(struct net_device *netdev,
+					struct ethtool_ringparam *ring)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_tx_ring *txdr, *tx_old;
+	struct pch_gbe_rx_ring *rxdr, *rx_old;
+	int tx_ring_size, rx_ring_size;
+	int err = 0;
+
+	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+		return -EINVAL;
+	tx_ring_size = (int)sizeof(struct pch_gbe_tx_ring);
+	rx_ring_size = (int)sizeof(struct pch_gbe_rx_ring);
+
+	if ((netif_running(adapter->netdev)))
+		pch_gbe_down(adapter);
+	tx_old = adapter->tx_ring;
+	rx_old = adapter->rx_ring;
+
+	txdr = kzalloc(tx_ring_size, GFP_KERNEL);
+	if (!txdr) {
+		err = -ENOMEM;
+		goto err_alloc_tx;
+	}
+	rxdr = kzalloc(rx_ring_size, GFP_KERNEL);
+	if (!rxdr) {
+		err = -ENOMEM;
+		goto err_alloc_rx;
+	}
+	adapter->tx_ring = txdr;
+	adapter->rx_ring = rxdr;
+
+	rxdr->count =
+		clamp_val(ring->rx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
+	rxdr->count = roundup(rxdr->count, PCH_GBE_RX_DESC_MULTIPLE);
+
+	txdr->count =
+		clamp_val(ring->tx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
+	txdr->count = roundup(txdr->count, PCH_GBE_TX_DESC_MULTIPLE);
+
+	if ((netif_running(adapter->netdev))) {
+		/* Try to get new resources before deleting old */
+		err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring);
+		if (err)
+			goto err_setup_rx;
+		err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring);
+		if (err)
+			goto err_setup_tx;
+		/* save the new, restore the old in order to free it,
+		 * then restore the new back again */
+#ifdef RINGFREE
+		adapter->rx_ring = rx_old;
+		adapter->tx_ring = tx_old;
+		pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
+		pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
+		kfree(tx_old);
+		kfree(rx_old);
+		adapter->rx_ring = rxdr;
+		adapter->tx_ring = txdr;
+#else
+		pch_gbe_free_rx_resources(adapter, rx_old);
+		pch_gbe_free_tx_resources(adapter, tx_old);
+		kfree(tx_old);
+		kfree(rx_old);
+		adapter->rx_ring = rxdr;
+		adapter->tx_ring = txdr;
+#endif
+		err = pch_gbe_up(adapter);
+	}
+	return err;
+
+err_setup_tx:
+	pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
+err_setup_rx:
+	adapter->rx_ring = rx_old;
+	adapter->tx_ring = tx_old;
+	kfree(rxdr);
+err_alloc_rx:
+	kfree(txdr);
+err_alloc_tx:
+	if (netif_running(adapter->netdev))
+		pch_gbe_up(adapter);
+	return err;
+}
+
+/**
+ * pch_gbe_get_pauseparam - Report pause parameters
+ * @netdev:  Network interface device structure
+ * @pause:   Pause parameters structure
+ */
+static void pch_gbe_get_pauseparam(struct net_device *netdev,
+				       struct ethtool_pauseparam *pause)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_hw *hw = &adapter->hw;
+
+	pause->autoneg =
+	    ((hw->mac.fc_autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE);
+
+	if (hw->mac.fc == PCH_GBE_FC_RX_PAUSE) {
+		pause->rx_pause = 1;
+	} else if (hw->mac.fc == PCH_GBE_FC_TX_PAUSE) {
+		pause->tx_pause = 1;
+	} else if (hw->mac.fc == PCH_GBE_FC_FULL) {
+		pause->rx_pause = 1;
+		pause->tx_pause = 1;
+	}
+}
+
+/**
+ * pch_gbe_set_pauseparam - Set pause paramters
+ * @netdev:  Network interface device structure
+ * @pause:   Pause parameters structure
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_pauseparam(struct net_device *netdev,
+				       struct ethtool_pauseparam *pause)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	struct pch_gbe_hw *hw = &adapter->hw;
+	int ret = 0;
+
+	hw->mac.fc_autoneg = pause->autoneg;
+	if ((pause->rx_pause) && (pause->tx_pause))
+		hw->mac.fc = PCH_GBE_FC_FULL;
+	else if ((pause->rx_pause) && (!pause->tx_pause))
+		hw->mac.fc = PCH_GBE_FC_RX_PAUSE;
+	else if ((!pause->rx_pause) && (pause->tx_pause))
+		hw->mac.fc = PCH_GBE_FC_TX_PAUSE;
+	else if ((!pause->rx_pause) && (!pause->tx_pause))
+		hw->mac.fc = PCH_GBE_FC_NONE;
+
+	if (hw->mac.fc_autoneg == AUTONEG_ENABLE) {
+		if ((netif_running(adapter->netdev))) {
+			pch_gbe_down(adapter);
+			ret = pch_gbe_up(adapter);
+		} else {
+			pch_gbe_reset(adapter);
+		}
+	} else {
+		ret = pch_gbe_mac_force_mac_fc(hw);
+	}
+	return ret;
+}
+
+/**
+ * pch_gbe_get_rx_csum - Report whether receive checksums are turned on or off
+ * @netdev:  Network interface device structure
+ * Returns
+ *	true(1):  Checksum On
+ *	false(0): Checksum Off
+ */
+static u32 pch_gbe_get_rx_csum(struct net_device *netdev)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	return adapter->rx_csum;
+}
+
+/**
+ * pch_gbe_set_rx_csum - Turn receive checksum on or off
+ * @netdev:  Network interface device structure
+ * @data:    Checksum On[true] or Off[false]
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_rx_csum(struct net_device *netdev, u32 data)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	adapter->rx_csum = data;
+	if ((netif_running(netdev)))
+		pch_gbe_reinit_locked(adapter);
+	else
+		pch_gbe_reset(adapter);
+
+	return 0;
+}
+
+/**
+ * pch_gbe_get_tx_csum - Report whether transmit checksums are turned on or off
+ * @netdev:  Network interface device structure
+ * Returns
+ *	true(1):  Checksum On
+ *	false(0): Checksum Off
+ */
+static u32 pch_gbe_get_tx_csum(struct net_device *netdev)
+{
+	return (netdev->features & NETIF_F_HW_CSUM) != 0;
+}
+
+/**
+ * pch_gbe_set_tx_csum - Turn transmit checksums on or off
+ * @netdev: Network interface device structure
+ * @data:   Checksum on[true] or off[false]
+ * Returns
+ *	0:			Successful.
+ *	Negative value:		Failed.
+ */
+static int pch_gbe_set_tx_csum(struct net_device *netdev, u32 data)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+
+	adapter->tx_csum = data;
+	if (data)
+		netdev->features |= NETIF_F_HW_CSUM;
+	else
+		netdev->features &= ~NETIF_F_HW_CSUM;
+	return 0;
+}
+
+/**
+ * pch_gbe_get_strings - Return a set of strings that describe the requested
+ *			 objects
+ * @netdev:    Network interface device structure
+ * @stringset: Select the stringset. [ETH_SS_TEST] [ETH_SS_STATS]
+ * @data:      Pointer of read string data.
+ */
+static void pch_gbe_get_strings(struct net_device *netdev, u32 stringset,
+					u8 *data)
+{
+	u8 *p = data;
+	int i;
+
+	switch (stringset) {
+	case (u32) ETH_SS_STATS:
+		for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
+			memcpy(p, pch_gbe_gstrings_stats[i].string,
+			       ETH_GSTRING_LEN);
+			p += ETH_GSTRING_LEN;
+		}
+		break;
+	}
+}
+
+/**
+ * pch_gbe_get_ethtool_stats - Return statistics about the device
+ * @netdev: Network interface device structure
+ * @stats:  Ethtool statue structure
+ * @data:   Pointer of read status area
+ */
+static void pch_gbe_get_ethtool_stats(struct net_device *netdev,
+				  struct ethtool_stats *stats, u64 *data)
+{
+	struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+	int i;
+	const struct pch_gbe_stats *gstats = pch_gbe_gstrings_stats;
+	char *hw_stats = (char *)&adapter->stats;
+
+	pch_gbe_update_stats(adapter);
+	for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
+		char *p = hw_stats + gstats->offset;
+		data[i] = gstats->size == sizeof(u64) ? *(u64 *)p:(*(u32 *)p);
+		gstats++;
+	}
+}
+
+static int pch_gbe_get_sset_count(struct net_device *netdev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_STATS:
+		return PCH_GBE_STATS_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static const struct ethtool_ops pch_gbe_ethtool_ops = {
+	.get_settings = pch_gbe_get_settings,
+	.set_settings = pch_gbe_set_settings,
+	.get_drvinfo = pch_gbe_get_drvinfo,
+	.get_regs_len = pch_gbe_get_regs_len,
+	.get_regs = pch_gbe_get_regs,
+	.get_wol = pch_gbe_get_wol,
+	.set_wol = pch_gbe_set_wol,
+	.nway_reset = pch_gbe_nway_reset,
+	.get_link = ethtool_op_get_link,
+	.get_ringparam = pch_gbe_get_ringparam,
+	.set_ringparam = pch_gbe_set_ringparam,
+	.get_pauseparam = pch_gbe_get_pauseparam,
+	.set_pauseparam = pch_gbe_set_pauseparam,
+	.get_rx_csum = pch_gbe_get_rx_csum,
+	.set_rx_csum = pch_gbe_set_rx_csum,
+	.get_tx_csum = pch_gbe_get_tx_csum,
+	.set_tx_csum = pch_gbe_set_tx_csum,
+	.get_strings = pch_gbe_get_strings,
+	.get_ethtool_stats = pch_gbe_get_ethtool_stats,
+	.get_sset_count = pch_gbe_get_sset_count,
+};
+
+void pch_gbe_set_ethtool_ops(struct net_device *netdev)
+{
+	SET_ETHTOOL_OPS(netdev, &pch_gbe_ethtool_ops);
+}