Initial import

1 files changed, 476 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igbvf/ethtool.c b/drivers/net/ethernet/intel/igbvf/ethtool.c
new file mode 100644
index 000000000..c6996feb1
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/ethtool.c
@@ -0,0 +1,476 @@
+/*******************************************************************************
+
+  Intel(R) 82576 Virtual Function Linux driver
+  Copyright(c) 2009 - 2012 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* ethtool support for igbvf */
+
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+
+#include "igbvf.h"
+#include <linux/if_vlan.h>
+
+struct igbvf_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int sizeof_stat;
+	int stat_offset;
+	int base_stat_offset;
+};
+
+#define IGBVF_STAT(current, base) \
+		sizeof(((struct igbvf_adapter *)0)->current), \
+		offsetof(struct igbvf_adapter, current), \
+		offsetof(struct igbvf_adapter, base)
+
+static const struct igbvf_stats igbvf_gstrings_stats[] = {
+	{ "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
+	{ "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
+	{ "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+	{ "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
+	{ "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
+	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
+	{ "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
+	{ "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
+	{ "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+	{ "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
+	{ "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
+	{ "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
+	{ "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
+};
+
+#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
+
+static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Link test   (on/offline)"
+};
+
+#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
+
+static int igbvf_get_settings(struct net_device *netdev,
+			      struct ethtool_cmd *ecmd)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 status;
+
+	ecmd->supported   = SUPPORTED_1000baseT_Full;
+
+	ecmd->advertising = ADVERTISED_1000baseT_Full;
+
+	ecmd->port = -1;
+	ecmd->transceiver = XCVR_DUMMY1;
+
+	status = er32(STATUS);
+	if (status & E1000_STATUS_LU) {
+		if (status & E1000_STATUS_SPEED_1000)
+			ethtool_cmd_speed_set(ecmd, SPEED_1000);
+		else if (status & E1000_STATUS_SPEED_100)
+			ethtool_cmd_speed_set(ecmd, SPEED_100);
+		else
+			ethtool_cmd_speed_set(ecmd, SPEED_10);
+
+		if (status & E1000_STATUS_FD)
+			ecmd->duplex = DUPLEX_FULL;
+		else
+			ecmd->duplex = DUPLEX_HALF;
+	} else {
+		ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
+		ecmd->duplex = DUPLEX_UNKNOWN;
+	}
+
+	ecmd->autoneg = AUTONEG_DISABLE;
+
+	return 0;
+}
+
+static int igbvf_set_settings(struct net_device *netdev,
+			      struct ethtool_cmd *ecmd)
+{
+	return -EOPNOTSUPP;
+}
+
+static void igbvf_get_pauseparam(struct net_device *netdev,
+				 struct ethtool_pauseparam *pause)
+{
+}
+
+static int igbvf_set_pauseparam(struct net_device *netdev,
+				struct ethtool_pauseparam *pause)
+{
+	return -EOPNOTSUPP;
+}
+
+static u32 igbvf_get_msglevel(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	return adapter->msg_enable;
+}
+
+static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	adapter->msg_enable = data;
+}
+
+static int igbvf_get_regs_len(struct net_device *netdev)
+{
+#define IGBVF_REGS_LEN 8
+	return IGBVF_REGS_LEN * sizeof(u32);
+}
+
+static void igbvf_get_regs(struct net_device *netdev,
+			   struct ethtool_regs *regs, void *p)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+	u32 *regs_buff = p;
+
+	memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
+
+	regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
+			adapter->pdev->device;
+
+	regs_buff[0] = er32(CTRL);
+	regs_buff[1] = er32(STATUS);
+
+	regs_buff[2] = er32(RDLEN(0));
+	regs_buff[3] = er32(RDH(0));
+	regs_buff[4] = er32(RDT(0));
+
+	regs_buff[5] = er32(TDLEN(0));
+	regs_buff[6] = er32(TDH(0));
+	regs_buff[7] = er32(TDT(0));
+}
+
+static int igbvf_get_eeprom_len(struct net_device *netdev)
+{
+	return 0;
+}
+
+static int igbvf_get_eeprom(struct net_device *netdev,
+			    struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	return -EOPNOTSUPP;
+}
+
+static int igbvf_set_eeprom(struct net_device *netdev,
+			    struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	return -EOPNOTSUPP;
+}
+
+static void igbvf_get_drvinfo(struct net_device *netdev,
+			      struct ethtool_drvinfo *drvinfo)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	strlcpy(drvinfo->driver,  igbvf_driver_name, sizeof(drvinfo->driver));
+	strlcpy(drvinfo->version, igbvf_driver_version,
+		sizeof(drvinfo->version));
+	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
+		sizeof(drvinfo->bus_info));
+	drvinfo->regdump_len = igbvf_get_regs_len(netdev);
+	drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
+}
+
+static void igbvf_get_ringparam(struct net_device *netdev,
+				struct ethtool_ringparam *ring)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct igbvf_ring *tx_ring = adapter->tx_ring;
+	struct igbvf_ring *rx_ring = adapter->rx_ring;
+
+	ring->rx_max_pending = IGBVF_MAX_RXD;
+	ring->tx_max_pending = IGBVF_MAX_TXD;
+	ring->rx_pending = rx_ring->count;
+	ring->tx_pending = tx_ring->count;
+}
+
+static int igbvf_set_ringparam(struct net_device *netdev,
+			       struct ethtool_ringparam *ring)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct igbvf_ring *temp_ring;
+	int err = 0;
+	u32 new_rx_count, new_tx_count;
+
+	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+		return -EINVAL;
+
+	new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD);
+	new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD);
+	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
+
+	new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD);
+	new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD);
+	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
+
+	if ((new_tx_count == adapter->tx_ring->count) &&
+	    (new_rx_count == adapter->rx_ring->count)) {
+		/* nothing to do */
+		return 0;
+	}
+
+	while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+		usleep_range(1000, 2000);
+
+	if (!netif_running(adapter->netdev)) {
+		adapter->tx_ring->count = new_tx_count;
+		adapter->rx_ring->count = new_rx_count;
+		goto clear_reset;
+	}
+
+	temp_ring = vmalloc(sizeof(struct igbvf_ring));
+	if (!temp_ring) {
+		err = -ENOMEM;
+		goto clear_reset;
+	}
+
+	igbvf_down(adapter);
+
+	/* We can't just free everything and then setup again,
+	 * because the ISRs in MSI-X mode get passed pointers
+	 * to the Tx and Rx ring structs.
+	 */
+	if (new_tx_count != adapter->tx_ring->count) {
+		memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
+
+		temp_ring->count = new_tx_count;
+		err = igbvf_setup_tx_resources(adapter, temp_ring);
+		if (err)
+			goto err_setup;
+
+		igbvf_free_tx_resources(adapter->tx_ring);
+
+		memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
+	}
+
+	if (new_rx_count != adapter->rx_ring->count) {
+		memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
+
+		temp_ring->count = new_rx_count;
+		err = igbvf_setup_rx_resources(adapter, temp_ring);
+		if (err)
+			goto err_setup;
+
+		igbvf_free_rx_resources(adapter->rx_ring);
+
+		memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring));
+	}
+err_setup:
+	igbvf_up(adapter);
+	vfree(temp_ring);
+clear_reset:
+	clear_bit(__IGBVF_RESETTING, &adapter->state);
+	return err;
+}
+
+static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
+{
+	struct e1000_hw *hw = &adapter->hw;
+	*data = 0;
+
+	hw->mac.ops.check_for_link(hw);
+
+	if (!(er32(STATUS) & E1000_STATUS_LU))
+		*data = 1;
+
+	return *data;
+}
+
+static void igbvf_diag_test(struct net_device *netdev,
+			    struct ethtool_test *eth_test, u64 *data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	set_bit(__IGBVF_TESTING, &adapter->state);
+
+	/* Link test performed before hardware reset so autoneg doesn't
+	 * interfere with test result
+	 */
+	if (igbvf_link_test(adapter, &data[0]))
+		eth_test->flags |= ETH_TEST_FL_FAILED;
+
+	clear_bit(__IGBVF_TESTING, &adapter->state);
+	msleep_interruptible(4 * 1000);
+}
+
+static void igbvf_get_wol(struct net_device *netdev,
+			  struct ethtool_wolinfo *wol)
+{
+	wol->supported = 0;
+	wol->wolopts = 0;
+}
+
+static int igbvf_set_wol(struct net_device *netdev,
+			 struct ethtool_wolinfo *wol)
+{
+	return -EOPNOTSUPP;
+}
+
+static int igbvf_get_coalesce(struct net_device *netdev,
+			      struct ethtool_coalesce *ec)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (adapter->requested_itr <= 3)
+		ec->rx_coalesce_usecs = adapter->requested_itr;
+	else
+		ec->rx_coalesce_usecs = adapter->current_itr >> 2;
+
+	return 0;
+}
+
+static int igbvf_set_coalesce(struct net_device *netdev,
+			      struct ethtool_coalesce *ec)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	struct e1000_hw *hw = &adapter->hw;
+
+	if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) &&
+	    (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) {
+		adapter->current_itr = ec->rx_coalesce_usecs << 2;
+		adapter->requested_itr = 1000000000 /
+					(adapter->current_itr * 256);
+	} else if ((ec->rx_coalesce_usecs == 3) ||
+		   (ec->rx_coalesce_usecs == 2)) {
+		adapter->current_itr = IGBVF_START_ITR;
+		adapter->requested_itr = ec->rx_coalesce_usecs;
+	} else if (ec->rx_coalesce_usecs == 0) {
+		/* The user's desire is to turn off interrupt throttling
+		 * altogether, but due to HW limitations, we can't do that.
+		 * Instead we set a very small value in EITR, which would
+		 * allow ~967k interrupts per second, but allow the adapter's
+		 * internal clocking to still function properly.
+		 */
+		adapter->current_itr = 4;
+		adapter->requested_itr = 1000000000 /
+					(adapter->current_itr * 256);
+	} else {
+		return -EINVAL;
+	}
+
+	writel(adapter->current_itr,
+	       hw->hw_addr + adapter->rx_ring->itr_register);
+
+	return 0;
+}
+
+static int igbvf_nway_reset(struct net_device *netdev)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+	if (netif_running(netdev))
+		igbvf_reinit_locked(adapter);
+	return 0;
+}
+
+static void igbvf_get_ethtool_stats(struct net_device *netdev,
+				    struct ethtool_stats *stats,
+				    u64 *data)
+{
+	struct igbvf_adapter *adapter = netdev_priv(netdev);
+	int i;
+
+	igbvf_update_stats(adapter);
+	for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+		char *p = (char *)adapter +
+			  igbvf_gstrings_stats[i].stat_offset;
+		char *b = (char *)adapter +
+			  igbvf_gstrings_stats[i].base_stat_offset;
+		data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
+			    sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
+			    (*(u32 *)p - *(u32 *)b));
+	}
+}
+
+static int igbvf_get_sset_count(struct net_device *dev, int stringset)
+{
+	switch (stringset) {
+	case ETH_SS_TEST:
+		return IGBVF_TEST_LEN;
+	case ETH_SS_STATS:
+		return IGBVF_GLOBAL_STATS_LEN;
+	default:
+		return -EINVAL;
+	}
+}
+
+static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
+			      u8 *data)
+{
+	u8 *p = data;
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_TEST:
+		memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
+		break;
+	case ETH_SS_STATS:
+		for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+			memcpy(p, igbvf_gstrings_stats[i].stat_string,
+			       ETH_GSTRING_LEN);
+			p += ETH_GSTRING_LEN;
+		}
+		break;
+	}
+}
+
+static const struct ethtool_ops igbvf_ethtool_ops = {
+	.get_settings		= igbvf_get_settings,
+	.set_settings		= igbvf_set_settings,
+	.get_drvinfo		= igbvf_get_drvinfo,
+	.get_regs_len		= igbvf_get_regs_len,
+	.get_regs		= igbvf_get_regs,
+	.get_wol		= igbvf_get_wol,
+	.set_wol		= igbvf_set_wol,
+	.get_msglevel		= igbvf_get_msglevel,
+	.set_msglevel		= igbvf_set_msglevel,
+	.nway_reset		= igbvf_nway_reset,
+	.get_link		= ethtool_op_get_link,
+	.get_eeprom_len		= igbvf_get_eeprom_len,
+	.get_eeprom		= igbvf_get_eeprom,
+	.set_eeprom		= igbvf_set_eeprom,
+	.get_ringparam		= igbvf_get_ringparam,
+	.set_ringparam		= igbvf_set_ringparam,
+	.get_pauseparam		= igbvf_get_pauseparam,
+	.set_pauseparam		= igbvf_set_pauseparam,
+	.self_test		= igbvf_diag_test,
+	.get_sset_count		= igbvf_get_sset_count,
+	.get_strings		= igbvf_get_strings,
+	.get_ethtool_stats	= igbvf_get_ethtool_stats,
+	.get_coalesce		= igbvf_get_coalesce,
+	.set_coalesce		= igbvf_set_coalesce,
+};
+
+void igbvf_set_ethtool_ops(struct net_device *netdev)
+{
+	netdev->ethtool_ops = &igbvf_ethtool_ops;
+}