--- /dev/null
+/*
+ * drivers/net/ethernet/freescale/gianfar_ethtool.c
+ *
+ * Gianfar Ethernet Driver
+ * Ethtool support for Gianfar Enet
+ * Based on e1000 ethtool support
+ *
+ * Author: Andy Fleming
+ * Maintainer: Kumar Gala
+ * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
+ *
+ * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
+ *
+ * This software may be used and distributed according to
+ * the terms of the GNU Public License, Version 2, incorporated herein
+ * by reference.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <linux/module.h>
+#include <linux/crc32.h>
+#include <asm/types.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+#include <linux/sort.h>
+#include <linux/if_vlan.h>
+
+#include "gianfar.h"
+
+#define GFAR_MAX_COAL_USECS 0xffff
+#define GFAR_MAX_COAL_FRAMES 0xff
+static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
+ u64 *buf);
+static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
+static int gfar_gcoalesce(struct net_device *dev,
+ struct ethtool_coalesce *cvals);
+static int gfar_scoalesce(struct net_device *dev,
+ struct ethtool_coalesce *cvals);
+static void gfar_gringparam(struct net_device *dev,
+ struct ethtool_ringparam *rvals);
+static int gfar_sringparam(struct net_device *dev,
+ struct ethtool_ringparam *rvals);
+static void gfar_gdrvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *drvinfo);
+
+static const char stat_gstrings[][ETH_GSTRING_LEN] = {
+ "rx-large-frame-errors",
+ "rx-short-frame-errors",
+ "rx-non-octet-errors",
+ "rx-crc-errors",
+ "rx-overrun-errors",
+ "rx-busy-errors",
+ "rx-babbling-errors",
+ "rx-truncated-frames",
+ "ethernet-bus-error",
+ "tx-babbling-errors",
+ "tx-underrun-errors",
+ "rx-skb-missing-errors",
+ "tx-timeout-errors",
+ "tx-rx-64-frames",
+ "tx-rx-65-127-frames",
+ "tx-rx-128-255-frames",
+ "tx-rx-256-511-frames",
+ "tx-rx-512-1023-frames",
+ "tx-rx-1024-1518-frames",
+ "tx-rx-1519-1522-good-vlan",
+ "rx-bytes",
+ "rx-packets",
+ "rx-fcs-errors",
+ "receive-multicast-packet",
+ "receive-broadcast-packet",
+ "rx-control-frame-packets",
+ "rx-pause-frame-packets",
+ "rx-unknown-op-code",
+ "rx-alignment-error",
+ "rx-frame-length-error",
+ "rx-code-error",
+ "rx-carrier-sense-error",
+ "rx-undersize-packets",
+ "rx-oversize-packets",
+ "rx-fragmented-frames",
+ "rx-jabber-frames",
+ "rx-dropped-frames",
+ "tx-byte-counter",
+ "tx-packets",
+ "tx-multicast-packets",
+ "tx-broadcast-packets",
+ "tx-pause-control-frames",
+ "tx-deferral-packets",
+ "tx-excessive-deferral-packets",
+ "tx-single-collision-packets",
+ "tx-multiple-collision-packets",
+ "tx-late-collision-packets",
+ "tx-excessive-collision-packets",
+ "tx-total-collision",
+ "reserved",
+ "tx-dropped-frames",
+ "tx-jabber-frames",
+ "tx-fcs-errors",
+ "tx-control-frames",
+ "tx-oversize-frames",
+ "tx-undersize-frames",
+ "tx-fragmented-frames",
+};
+
+/* Fill in a buffer with the strings which correspond to the
+ * stats */
+static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
+ memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
+ else
+ memcpy(buf, stat_gstrings,
+ GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
+}
+
+/* Fill in an array of 64-bit statistics from various sources.
+ * This array will be appended to the end of the ethtool_stats
+ * structure, and returned to user space
+ */
+static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
+ u64 *buf)
+{
+ int i;
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
+
+ for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
+ buf[i] = atomic64_read(&extra[i]);
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
+ u32 __iomem *rmon = (u32 __iomem *) ®s->rmon;
+
+ for (; i < GFAR_STATS_LEN; i++, rmon++)
+ buf[i] = (u64) gfar_read(rmon);
+ }
+}
+
+static int gfar_sset_count(struct net_device *dev, int sset)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ switch (sset) {
+ case ETH_SS_STATS:
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
+ return GFAR_STATS_LEN;
+ else
+ return GFAR_EXTRA_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+/* Fills in the drvinfo structure with some basic info */
+static void gfar_gdrvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
+ strlcpy(drvinfo->version, gfar_driver_version,
+ sizeof(drvinfo->version));
+ strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
+ strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
+ drvinfo->regdump_len = 0;
+ drvinfo->eedump_len = 0;
+}
+
+
+static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct phy_device *phydev = priv->phydev;
+
+ if (NULL == phydev)
+ return -ENODEV;
+
+ return phy_ethtool_sset(phydev, cmd);
+}
+
+
+/* Return the current settings in the ethtool_cmd structure */
+static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct phy_device *phydev = priv->phydev;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ struct gfar_priv_tx_q *tx_queue = NULL;
+
+ if (NULL == phydev)
+ return -ENODEV;
+ tx_queue = priv->tx_queue[0];
+ rx_queue = priv->rx_queue[0];
+
+ /* etsec-1.7 and older versions have only one txic
+ * and rxic regs although they support multiple queues */
+ cmd->maxtxpkt = get_icft_value(tx_queue->txic);
+ cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
+
+ return phy_ethtool_gset(phydev, cmd);
+}
+
+/* Return the length of the register structure */
+static int gfar_reglen(struct net_device *dev)
+{
+ return sizeof (struct gfar);
+}
+
+/* Return a dump of the GFAR register space */
+static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+ void *regbuf)
+{
+ int i;
+ struct gfar_private *priv = netdev_priv(dev);
+ u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
+ u32 *buf = (u32 *) regbuf;
+
+ for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
+ buf[i] = gfar_read(&theregs[i]);
+}
+
+/* Convert microseconds to ethernet clock ticks, which changes
+ * depending on what speed the controller is running at */
+static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
+ unsigned int usecs)
+{
+ unsigned int count;
+
+ /* The timer is different, depending on the interface speed */
+ switch (priv->phydev->speed) {
+ case SPEED_1000:
+ count = GFAR_GBIT_TIME;
+ break;
+ case SPEED_100:
+ count = GFAR_100_TIME;
+ break;
+ case SPEED_10:
+ default:
+ count = GFAR_10_TIME;
+ break;
+ }
+
+ /* Make sure we return a number greater than 0
+ * if usecs > 0 */
+ return (usecs * 1000 + count - 1) / count;
+}
+
+/* Convert ethernet clock ticks to microseconds */
+static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
+ unsigned int ticks)
+{
+ unsigned int count;
+
+ /* The timer is different, depending on the interface speed */
+ switch (priv->phydev->speed) {
+ case SPEED_1000:
+ count = GFAR_GBIT_TIME;
+ break;
+ case SPEED_100:
+ count = GFAR_100_TIME;
+ break;
+ case SPEED_10:
+ default:
+ count = GFAR_10_TIME;
+ break;
+ }
+
+ /* Make sure we return a number greater than 0 */
+ /* if ticks is > 0 */
+ return (ticks * count) / 1000;
+}
+
+/* Get the coalescing parameters, and put them in the cvals
+ * structure. */
+static int gfar_gcoalesce(struct net_device *dev,
+ struct ethtool_coalesce *cvals)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ unsigned long rxtime;
+ unsigned long rxcount;
+ unsigned long txtime;
+ unsigned long txcount;
+
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
+ return -EOPNOTSUPP;
+
+ if (NULL == priv->phydev)
+ return -ENODEV;
+
+ rx_queue = priv->rx_queue[0];
+ tx_queue = priv->tx_queue[0];
+
+ rxtime = get_ictt_value(rx_queue->rxic);
+ rxcount = get_icft_value(rx_queue->rxic);
+ txtime = get_ictt_value(tx_queue->txic);
+ txcount = get_icft_value(tx_queue->txic);
+ cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
+ cvals->rx_max_coalesced_frames = rxcount;
+
+ cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
+ cvals->tx_max_coalesced_frames = txcount;
+
+ cvals->use_adaptive_rx_coalesce = 0;
+ cvals->use_adaptive_tx_coalesce = 0;
+
+ cvals->pkt_rate_low = 0;
+ cvals->rx_coalesce_usecs_low = 0;
+ cvals->rx_max_coalesced_frames_low = 0;
+ cvals->tx_coalesce_usecs_low = 0;
+ cvals->tx_max_coalesced_frames_low = 0;
+
+ /* When the packet rate is below pkt_rate_high but above
+ * pkt_rate_low (both measured in packets per second) the
+ * normal {rx,tx}_* coalescing parameters are used.
+ */
+
+ /* When the packet rate is (measured in packets per second)
+ * is above pkt_rate_high, the {rx,tx}_*_high parameters are
+ * used.
+ */
+ cvals->pkt_rate_high = 0;
+ cvals->rx_coalesce_usecs_high = 0;
+ cvals->rx_max_coalesced_frames_high = 0;
+ cvals->tx_coalesce_usecs_high = 0;
+ cvals->tx_max_coalesced_frames_high = 0;
+
+ /* How often to do adaptive coalescing packet rate sampling,
+ * measured in seconds. Must not be zero.
+ */
+ cvals->rate_sample_interval = 0;
+
+ return 0;
+}
+
+/* Change the coalescing values.
+ * Both cvals->*_usecs and cvals->*_frames have to be > 0
+ * in order for coalescing to be active
+ */
+static int gfar_scoalesce(struct net_device *dev,
+ struct ethtool_coalesce *cvals)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int i, err = 0;
+
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
+ return -EOPNOTSUPP;
+
+ if (NULL == priv->phydev)
+ return -ENODEV;
+
+ /* Check the bounds of the values */
+ if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
+ netdev_info(dev, "Coalescing is limited to %d microseconds\n",
+ GFAR_MAX_COAL_USECS);
+ return -EINVAL;
+ }
+
+ if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
+ netdev_info(dev, "Coalescing is limited to %d frames\n",
+ GFAR_MAX_COAL_FRAMES);
+ return -EINVAL;
+ }
+
+ /* Check the bounds of the values */
+ if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
+ netdev_info(dev, "Coalescing is limited to %d microseconds\n",
+ GFAR_MAX_COAL_USECS);
+ return -EINVAL;
+ }
+
+ if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
+ netdev_info(dev, "Coalescing is limited to %d frames\n",
+ GFAR_MAX_COAL_FRAMES);
+ return -EINVAL;
+ }
+
+ while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
+ cpu_relax();
+
+ /* Set up rx coalescing */
+ if ((cvals->rx_coalesce_usecs == 0) ||
+ (cvals->rx_max_coalesced_frames == 0)) {
+ for (i = 0; i < priv->num_rx_queues; i++)
+ priv->rx_queue[i]->rxcoalescing = 0;
+ } else {
+ for (i = 0; i < priv->num_rx_queues; i++)
+ priv->rx_queue[i]->rxcoalescing = 1;
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ priv->rx_queue[i]->rxic = mk_ic_value(
+ cvals->rx_max_coalesced_frames,
+ gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
+ }
+
+ /* Set up tx coalescing */
+ if ((cvals->tx_coalesce_usecs == 0) ||
+ (cvals->tx_max_coalesced_frames == 0)) {
+ for (i = 0; i < priv->num_tx_queues; i++)
+ priv->tx_queue[i]->txcoalescing = 0;
+ } else {
+ for (i = 0; i < priv->num_tx_queues; i++)
+ priv->tx_queue[i]->txcoalescing = 1;
+ }
+
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ priv->tx_queue[i]->txic = mk_ic_value(
+ cvals->tx_max_coalesced_frames,
+ gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
+ }
+
+ if (dev->flags & IFF_UP) {
+ stop_gfar(dev);
+ err = startup_gfar(dev);
+ } else {
+ gfar_mac_reset(priv);
+ }
+
+ clear_bit_unlock(GFAR_RESETTING, &priv->state);
+
+ return err;
+}
+
+/* Fills in rvals with the current ring parameters. Currently,
+ * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
+ * jumbo are ignored by the driver */
+static void gfar_gringparam(struct net_device *dev,
+ struct ethtool_ringparam *rvals)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+
+ tx_queue = priv->tx_queue[0];
+ rx_queue = priv->rx_queue[0];
+
+ rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
+ rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
+ rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
+ rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
+
+ /* Values changeable by the user. The valid values are
+ * in the range 1 to the "*_max_pending" counterpart above.
+ */
+ rvals->rx_pending = rx_queue->rx_ring_size;
+ rvals->rx_mini_pending = rx_queue->rx_ring_size;
+ rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
+ rvals->tx_pending = tx_queue->tx_ring_size;
+}
+
+/* Change the current ring parameters, stopping the controller if
+ * necessary so that we don't mess things up while we're in motion.
+ */
+static int gfar_sringparam(struct net_device *dev,
+ struct ethtool_ringparam *rvals)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int err = 0, i;
+
+ if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
+ return -EINVAL;
+
+ if (!is_power_of_2(rvals->rx_pending)) {
+ netdev_err(dev, "Ring sizes must be a power of 2\n");
+ return -EINVAL;
+ }
+
+ if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
+ return -EINVAL;
+
+ if (!is_power_of_2(rvals->tx_pending)) {
+ netdev_err(dev, "Ring sizes must be a power of 2\n");
+ return -EINVAL;
+ }
+
+ while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
+ cpu_relax();
+
+ if (dev->flags & IFF_UP)
+ stop_gfar(dev);
+
+ /* Change the sizes */
+ for (i = 0; i < priv->num_rx_queues; i++)
+ priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
+
+ for (i = 0; i < priv->num_tx_queues; i++)
+ priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
+
+ /* Rebuild the rings with the new size */
+ if (dev->flags & IFF_UP)
+ err = startup_gfar(dev);
+
+ clear_bit_unlock(GFAR_RESETTING, &priv->state);
+
+ return err;
+}
+
+static void gfar_gpauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *epause)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ epause->autoneg = !!priv->pause_aneg_en;
+ epause->rx_pause = !!priv->rx_pause_en;
+ epause->tx_pause = !!priv->tx_pause_en;
+}
+
+static int gfar_spauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *epause)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct phy_device *phydev = priv->phydev;
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 oldadv, newadv;
+
+ if (!phydev)
+ return -ENODEV;
+
+ if (!(phydev->supported & SUPPORTED_Pause) ||
+ (!(phydev->supported & SUPPORTED_Asym_Pause) &&
+ (epause->rx_pause != epause->tx_pause)))
+ return -EINVAL;
+
+ priv->rx_pause_en = priv->tx_pause_en = 0;
+ if (epause->rx_pause) {
+ priv->rx_pause_en = 1;
+
+ if (epause->tx_pause) {
+ priv->tx_pause_en = 1;
+ /* FLOW_CTRL_RX & TX */
+ newadv = ADVERTISED_Pause;
+ } else /* FLOW_CTLR_RX */
+ newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
+ } else if (epause->tx_pause) {
+ priv->tx_pause_en = 1;
+ /* FLOW_CTLR_TX */
+ newadv = ADVERTISED_Asym_Pause;
+ } else
+ newadv = 0;
+
+ if (epause->autoneg)
+ priv->pause_aneg_en = 1;
+ else
+ priv->pause_aneg_en = 0;
+
+ oldadv = phydev->advertising &
+ (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
+ if (oldadv != newadv) {
+ phydev->advertising &=
+ ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
+ phydev->advertising |= newadv;
+ if (phydev->autoneg)
+ /* inform link partner of our
+ * new flow ctrl settings
+ */
+ return phy_start_aneg(phydev);
+
+ if (!epause->autoneg) {
+ u32 tempval;
+ tempval = gfar_read(®s->maccfg1);
+ tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
+
+ priv->tx_actual_en = 0;
+ if (priv->tx_pause_en) {
+ priv->tx_actual_en = 1;
+ tempval |= MACCFG1_TX_FLOW;
+ }
+
+ if (priv->rx_pause_en)
+ tempval |= MACCFG1_RX_FLOW;
+ gfar_write(®s->maccfg1, tempval);
+ }
+ }
+
+ return 0;
+}
+
+int gfar_set_features(struct net_device *dev, netdev_features_t features)
+{
+ netdev_features_t changed = dev->features ^ features;
+ struct gfar_private *priv = netdev_priv(dev);
+ int err = 0;
+
+ if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_RXCSUM)))
+ return 0;
+
+ while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
+ cpu_relax();
+
+ dev->features = features;
+
+ if (dev->flags & IFF_UP) {
+ /* Now we take down the rings to rebuild them */
+ stop_gfar(dev);
+ err = startup_gfar(dev);
+ } else {
+ gfar_mac_reset(priv);
+ }
+
+ clear_bit_unlock(GFAR_RESETTING, &priv->state);
+
+ return err;
+}
+
+static uint32_t gfar_get_msglevel(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ return priv->msg_enable;
+}
+
+static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ priv->msg_enable = data;
+}
+
+#ifdef CONFIG_PM
+static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
+ wol->supported = WAKE_MAGIC;
+ wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
+ } else {
+ wol->supported = wol->wolopts = 0;
+ }
+}
+
+static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
+ wol->wolopts != 0)
+ return -EINVAL;
+
+ if (wol->wolopts & ~WAKE_MAGIC)
+ return -EINVAL;
+
+ device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
+
+ spin_lock_irqsave(&priv->bflock, flags);
+ priv->wol_en = !!device_may_wakeup(&dev->dev);
+ spin_unlock_irqrestore(&priv->bflock, flags);
+
+ return 0;
+}
+#endif
+
+static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
+{
+ u32 fcr = 0x0, fpr = FPR_FILER_MASK;
+
+ if (ethflow & RXH_L2DA) {
+ fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
+ RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+
+ fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
+ RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & RXH_VLAN) {
+ fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & RXH_IP_SRC) {
+ fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & (RXH_IP_DST)) {
+ fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & RXH_L3_PROTO) {
+ fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & RXH_L4_B_0_1) {
+ fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+ if (ethflow & RXH_L4_B_2_3) {
+ fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
+ RQFCR_AND | RQFCR_HASHTBL_0;
+ priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
+ priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
+ gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+}
+
+static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
+ u64 class)
+{
+ unsigned int last_rule_idx = priv->cur_filer_idx;
+ unsigned int cmp_rqfpr;
+ unsigned int *local_rqfpr;
+ unsigned int *local_rqfcr;
+ int i = 0x0, k = 0x0;
+ int j = MAX_FILER_IDX, l = 0x0;
+ int ret = 1;
+
+ local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
+ GFP_KERNEL);
+ local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
+ GFP_KERNEL);
+ if (!local_rqfpr || !local_rqfcr) {
+ ret = 0;
+ goto err;
+ }
+
+ switch (class) {
+ case TCP_V4_FLOW:
+ cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
+ break;
+ case UDP_V4_FLOW:
+ cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
+ break;
+ case TCP_V6_FLOW:
+ cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
+ break;
+ case UDP_V6_FLOW:
+ cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
+ break;
+ default:
+ netdev_err(priv->ndev,
+ "Right now this class is not supported\n");
+ ret = 0;
+ goto err;
+ }
+
+ for (i = 0; i < MAX_FILER_IDX + 1; i++) {
+ local_rqfpr[j] = priv->ftp_rqfpr[i];
+ local_rqfcr[j] = priv->ftp_rqfcr[i];
+ j--;
+ if ((priv->ftp_rqfcr[i] ==
+ (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
+ (priv->ftp_rqfpr[i] == cmp_rqfpr))
+ break;
+ }
+
+ if (i == MAX_FILER_IDX + 1) {
+ netdev_err(priv->ndev,
+ "No parse rule found, can't create hash rules\n");
+ ret = 0;
+ goto err;
+ }
+
+ /* If a match was found, then it begins the starting of a cluster rule
+ * if it was already programmed, we need to overwrite these rules
+ */
+ for (l = i+1; l < MAX_FILER_IDX; l++) {
+ if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
+ !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
+ priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
+ RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
+ priv->ftp_rqfpr[l] = FPR_FILER_MASK;
+ gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
+ priv->ftp_rqfpr[l]);
+ break;
+ }
+
+ if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
+ (priv->ftp_rqfcr[l] & RQFCR_AND))
+ continue;
+ else {
+ local_rqfpr[j] = priv->ftp_rqfpr[l];
+ local_rqfcr[j] = priv->ftp_rqfcr[l];
+ j--;
+ }
+ }
+
+ priv->cur_filer_idx = l - 1;
+ last_rule_idx = l;
+
+ /* hash rules */
+ ethflow_to_filer_rules(priv, ethflow);
+
+ /* Write back the popped out rules again */
+ for (k = j+1; k < MAX_FILER_IDX; k++) {
+ priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
+ priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
+ gfar_write_filer(priv, priv->cur_filer_idx,
+ local_rqfcr[k], local_rqfpr[k]);
+ if (!priv->cur_filer_idx)
+ break;
+ priv->cur_filer_idx = priv->cur_filer_idx - 1;
+ }
+
+err:
+ kfree(local_rqfcr);
+ kfree(local_rqfpr);
+ return ret;
+}
+
+static int gfar_set_hash_opts(struct gfar_private *priv,
+ struct ethtool_rxnfc *cmd)
+{
+ /* write the filer rules here */
+ if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int gfar_check_filer_hardware(struct gfar_private *priv)
+{
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 i;
+
+ /* Check if we are in FIFO mode */
+ i = gfar_read(®s->ecntrl);
+ i &= ECNTRL_FIFM;
+ if (i == ECNTRL_FIFM) {
+ netdev_notice(priv->ndev, "Interface in FIFO mode\n");
+ i = gfar_read(®s->rctrl);
+ i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
+ if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
+ netdev_info(priv->ndev,
+ "Receive Queue Filtering enabled\n");
+ } else {
+ netdev_warn(priv->ndev,
+ "Receive Queue Filtering disabled\n");
+ return -EOPNOTSUPP;
+ }
+ }
+ /* Or in standard mode */
+ else {
+ i = gfar_read(®s->rctrl);
+ i &= RCTRL_PRSDEP_MASK;
+ if (i == RCTRL_PRSDEP_MASK) {
+ netdev_info(priv->ndev,
+ "Receive Queue Filtering enabled\n");
+ } else {
+ netdev_warn(priv->ndev,
+ "Receive Queue Filtering disabled\n");
+ return -EOPNOTSUPP;
+ }
+ }
+
+ /* Sets the properties for arbitrary filer rule
+ * to the first 4 Layer 4 Bytes
+ */
+ gfar_write(®s->rbifx, 0xC0C1C2C3);
+ return 0;
+}
+
+static int gfar_comp_asc(const void *a, const void *b)
+{
+ return memcmp(a, b, 4);
+}
+
+static int gfar_comp_desc(const void *a, const void *b)
+{
+ return -memcmp(a, b, 4);
+}
+
+static void gfar_swap(void *a, void *b, int size)
+{
+ u32 *_a = a;
+ u32 *_b = b;
+
+ swap(_a[0], _b[0]);
+ swap(_a[1], _b[1]);
+ swap(_a[2], _b[2]);
+ swap(_a[3], _b[3]);
+}
+
+/* Write a mask to filer cache */
+static void gfar_set_mask(u32 mask, struct filer_table *tab)
+{
+ tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
+ tab->fe[tab->index].prop = mask;
+ tab->index++;
+}
+
+/* Sets parse bits (e.g. IP or TCP) */
+static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
+{
+ gfar_set_mask(mask, tab);
+ tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
+ RQFCR_AND;
+ tab->fe[tab->index].prop = value;
+ tab->index++;
+}
+
+static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
+ struct filer_table *tab)
+{
+ gfar_set_mask(mask, tab);
+ tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
+ tab->fe[tab->index].prop = value;
+ tab->index++;
+}
+
+/* For setting a tuple of value and mask of type flag
+ * Example:
+ * IP-Src = 10.0.0.0/255.0.0.0
+ * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
+ *
+ * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
+ * For a don't care mask it gives us a 0
+ *
+ * The check if don't care and the mask adjustment if mask=0 is done for VLAN
+ * and MAC stuff on an upper level (due to missing information on this level).
+ * For these guys we can discard them if they are value=0 and mask=0.
+ *
+ * Further the all masks are one-padded for better hardware efficiency.
+ */
+static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
+ struct filer_table *tab)
+{
+ switch (flag) {
+ /* 3bit */
+ case RQFCR_PID_PRI:
+ if (!(value | mask))
+ return;
+ mask |= RQFCR_PID_PRI_MASK;
+ break;
+ /* 8bit */
+ case RQFCR_PID_L4P:
+ case RQFCR_PID_TOS:
+ if (!~(mask | RQFCR_PID_L4P_MASK))
+ return;
+ if (!mask)
+ mask = ~0;
+ else
+ mask |= RQFCR_PID_L4P_MASK;
+ break;
+ /* 12bit */
+ case RQFCR_PID_VID:
+ if (!(value | mask))
+ return;
+ mask |= RQFCR_PID_VID_MASK;
+ break;
+ /* 16bit */
+ case RQFCR_PID_DPT:
+ case RQFCR_PID_SPT:
+ case RQFCR_PID_ETY:
+ if (!~(mask | RQFCR_PID_PORT_MASK))
+ return;
+ if (!mask)
+ mask = ~0;
+ else
+ mask |= RQFCR_PID_PORT_MASK;
+ break;
+ /* 24bit */
+ case RQFCR_PID_DAH:
+ case RQFCR_PID_DAL:
+ case RQFCR_PID_SAH:
+ case RQFCR_PID_SAL:
+ if (!(value | mask))
+ return;
+ mask |= RQFCR_PID_MAC_MASK;
+ break;
+ /* for all real 32bit masks */
+ default:
+ if (!~mask)
+ return;
+ if (!mask)
+ mask = ~0;
+ break;
+ }
+ gfar_set_general_attribute(value, mask, flag, tab);
+}
+
+/* Translates value and mask for UDP, TCP or SCTP */
+static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
+ struct ethtool_tcpip4_spec *mask,
+ struct filer_table *tab)
+{
+ gfar_set_attribute(be32_to_cpu(value->ip4src),
+ be32_to_cpu(mask->ip4src),
+ RQFCR_PID_SIA, tab);
+ gfar_set_attribute(be32_to_cpu(value->ip4dst),
+ be32_to_cpu(mask->ip4dst),
+ RQFCR_PID_DIA, tab);
+ gfar_set_attribute(be16_to_cpu(value->pdst),
+ be16_to_cpu(mask->pdst),
+ RQFCR_PID_DPT, tab);
+ gfar_set_attribute(be16_to_cpu(value->psrc),
+ be16_to_cpu(mask->psrc),
+ RQFCR_PID_SPT, tab);
+ gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
+}
+
+/* Translates value and mask for RAW-IP4 */
+static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
+ struct ethtool_usrip4_spec *mask,
+ struct filer_table *tab)
+{
+ gfar_set_attribute(be32_to_cpu(value->ip4src),
+ be32_to_cpu(mask->ip4src),
+ RQFCR_PID_SIA, tab);
+ gfar_set_attribute(be32_to_cpu(value->ip4dst),
+ be32_to_cpu(mask->ip4dst),
+ RQFCR_PID_DIA, tab);
+ gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
+ gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
+ gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
+ be32_to_cpu(mask->l4_4_bytes),
+ RQFCR_PID_ARB, tab);
+
+}
+
+/* Translates value and mask for ETHER spec */
+static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
+ struct filer_table *tab)
+{
+ u32 upper_temp_mask = 0;
+ u32 lower_temp_mask = 0;
+
+ /* Source address */
+ if (!is_broadcast_ether_addr(mask->h_source)) {
+ if (is_zero_ether_addr(mask->h_source)) {
+ upper_temp_mask = 0xFFFFFFFF;
+ lower_temp_mask = 0xFFFFFFFF;
+ } else {
+ upper_temp_mask = mask->h_source[0] << 16 |
+ mask->h_source[1] << 8 |
+ mask->h_source[2];
+ lower_temp_mask = mask->h_source[3] << 16 |
+ mask->h_source[4] << 8 |
+ mask->h_source[5];
+ }
+ /* Upper 24bit */
+ gfar_set_attribute(value->h_source[0] << 16 |
+ value->h_source[1] << 8 |
+ value->h_source[2],
+ upper_temp_mask, RQFCR_PID_SAH, tab);
+ /* And the same for the lower part */
+ gfar_set_attribute(value->h_source[3] << 16 |
+ value->h_source[4] << 8 |
+ value->h_source[5],
+ lower_temp_mask, RQFCR_PID_SAL, tab);
+ }
+ /* Destination address */
+ if (!is_broadcast_ether_addr(mask->h_dest)) {
+ /* Special for destination is limited broadcast */
+ if ((is_broadcast_ether_addr(value->h_dest) &&
+ is_zero_ether_addr(mask->h_dest))) {
+ gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
+ } else {
+ if (is_zero_ether_addr(mask->h_dest)) {
+ upper_temp_mask = 0xFFFFFFFF;
+ lower_temp_mask = 0xFFFFFFFF;
+ } else {
+ upper_temp_mask = mask->h_dest[0] << 16 |
+ mask->h_dest[1] << 8 |
+ mask->h_dest[2];
+ lower_temp_mask = mask->h_dest[3] << 16 |
+ mask->h_dest[4] << 8 |
+ mask->h_dest[5];
+ }
+
+ /* Upper 24bit */
+ gfar_set_attribute(value->h_dest[0] << 16 |
+ value->h_dest[1] << 8 |
+ value->h_dest[2],
+ upper_temp_mask, RQFCR_PID_DAH, tab);
+ /* And the same for the lower part */
+ gfar_set_attribute(value->h_dest[3] << 16 |
+ value->h_dest[4] << 8 |
+ value->h_dest[5],
+ lower_temp_mask, RQFCR_PID_DAL, tab);
+ }
+ }
+
+ gfar_set_attribute(be16_to_cpu(value->h_proto),
+ be16_to_cpu(mask->h_proto),
+ RQFCR_PID_ETY, tab);
+}
+
+static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
+{
+ return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
+}
+
+static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
+{
+ return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
+}
+
+static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
+{
+ return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
+}
+
+static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
+{
+ return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
+}
+
+static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
+{
+ return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
+ VLAN_PRIO_SHIFT;
+}
+
+static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
+{
+ return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
+ VLAN_PRIO_SHIFT;
+}
+
+/* Convert a rule to binary filter format of gianfar */
+static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
+ struct filer_table *tab)
+{
+ u32 vlan = 0, vlan_mask = 0;
+ u32 id = 0, id_mask = 0;
+ u32 cfi = 0, cfi_mask = 0;
+ u32 prio = 0, prio_mask = 0;
+ u32 old_index = tab->index;
+
+ /* Check if vlan is wanted */
+ if ((rule->flow_type & FLOW_EXT) &&
+ (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
+ if (!rule->m_ext.vlan_tci)
+ rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
+
+ vlan = RQFPR_VLN;
+ vlan_mask = RQFPR_VLN;
+
+ /* Separate the fields */
+ id = vlan_tci_vid(rule);
+ id_mask = vlan_tci_vidm(rule);
+ cfi = vlan_tci_cfi(rule);
+ cfi_mask = vlan_tci_cfim(rule);
+ prio = vlan_tci_prio(rule);
+ prio_mask = vlan_tci_priom(rule);
+
+ if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
+ vlan |= RQFPR_CFI;
+ vlan_mask |= RQFPR_CFI;
+ } else if (cfi != VLAN_TAG_PRESENT &&
+ cfi_mask == VLAN_TAG_PRESENT) {
+ vlan_mask |= RQFPR_CFI;
+ }
+ }
+
+ switch (rule->flow_type & ~FLOW_EXT) {
+ case TCP_V4_FLOW:
+ gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
+ RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
+ gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
+ &rule->m_u.tcp_ip4_spec, tab);
+ break;
+ case UDP_V4_FLOW:
+ gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
+ RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
+ gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
+ &rule->m_u.udp_ip4_spec, tab);
+ break;
+ case SCTP_V4_FLOW:
+ gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
+ tab);
+ gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
+ gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
+ (struct ethtool_tcpip4_spec *)&rule->m_u,
+ tab);
+ break;
+ case IP_USER_FLOW:
+ gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
+ tab);
+ gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
+ (struct ethtool_usrip4_spec *) &rule->m_u,
+ tab);
+ break;
+ case ETHER_FLOW:
+ if (vlan)
+ gfar_set_parse_bits(vlan, vlan_mask, tab);
+ gfar_set_ether((struct ethhdr *) &rule->h_u,
+ (struct ethhdr *) &rule->m_u, tab);
+ break;
+ default:
+ return -1;
+ }
+
+ /* Set the vlan attributes in the end */
+ if (vlan) {
+ gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
+ gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
+ }
+
+ /* If there has been nothing written till now, it must be a default */
+ if (tab->index == old_index) {
+ gfar_set_mask(0xFFFFFFFF, tab);
+ tab->fe[tab->index].ctrl = 0x20;
+ tab->fe[tab->index].prop = 0x0;
+ tab->index++;
+ }
+
+ /* Remove last AND */
+ tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
+
+ /* Specify which queue to use or to drop */
+ if (rule->ring_cookie == RX_CLS_FLOW_DISC)
+ tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
+ else
+ tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
+
+ /* Only big enough entries can be clustered */
+ if (tab->index > (old_index + 2)) {
+ tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
+ tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
+ }
+
+ /* In rare cases the cache can be full while there is
+ * free space in hw
+ */
+ if (tab->index > MAX_FILER_CACHE_IDX - 1)
+ return -EBUSY;
+
+ return 0;
+}
+
+/* Copy size filer entries */
+static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
+ struct gfar_filer_entry src[0], s32 size)
+{
+ while (size > 0) {
+ size--;
+ dst[size].ctrl = src[size].ctrl;
+ dst[size].prop = src[size].prop;
+ }
+}
+
+/* Delete the contents of the filer-table between start and end
+ * and collapse them
+ */
+static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
+{
+ int length;
+
+ if (end > MAX_FILER_CACHE_IDX || end < begin)
+ return -EINVAL;
+
+ end++;
+ length = end - begin;
+
+ /* Copy */
+ while (end < tab->index) {
+ tab->fe[begin].ctrl = tab->fe[end].ctrl;
+ tab->fe[begin++].prop = tab->fe[end++].prop;
+
+ }
+ /* Fill up with don't cares */
+ while (begin < tab->index) {
+ tab->fe[begin].ctrl = 0x60;
+ tab->fe[begin].prop = 0xFFFFFFFF;
+ begin++;
+ }
+
+ tab->index -= length;
+ return 0;
+}
+
+/* Make space on the wanted location */
+static int gfar_expand_filer_entries(u32 begin, u32 length,
+ struct filer_table *tab)
+{
+ if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
+ begin > MAX_FILER_CACHE_IDX)
+ return -EINVAL;
+
+ gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
+ tab->index - length + 1);
+
+ tab->index += length;
+ return 0;
+}
+
+static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
+{
+ for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
+ start++) {
+ if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
+ (RQFCR_AND | RQFCR_CLE))
+ return start;
+ }
+ return -1;
+}
+
+static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
+{
+ for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
+ start++) {
+ if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
+ (RQFCR_CLE))
+ return start;
+ }
+ return -1;
+}
+
+/* Uses hardwares clustering option to reduce
+ * the number of filer table entries
+ */
+static void gfar_cluster_filer(struct filer_table *tab)
+{
+ s32 i = -1, j, iend, jend;
+
+ while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
+ j = i;
+ while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
+ /* The cluster entries self and the previous one
+ * (a mask) must be identical!
+ */
+ if (tab->fe[i].ctrl != tab->fe[j].ctrl)
+ break;
+ if (tab->fe[i].prop != tab->fe[j].prop)
+ break;
+ if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
+ break;
+ if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
+ break;
+ iend = gfar_get_next_cluster_end(i, tab);
+ jend = gfar_get_next_cluster_end(j, tab);
+ if (jend == -1 || iend == -1)
+ break;
+
+ /* First we make some free space, where our cluster
+ * element should be. Then we copy it there and finally
+ * delete in from its old location.
+ */
+ if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
+ -EINVAL)
+ break;
+
+ gfar_copy_filer_entries(&(tab->fe[iend + 1]),
+ &(tab->fe[jend + 1]), jend - j);
+
+ if (gfar_trim_filer_entries(jend - 1,
+ jend + (jend - j),
+ tab) == -EINVAL)
+ return;
+
+ /* Mask out cluster bit */
+ tab->fe[iend].ctrl &= ~(RQFCR_CLE);
+ }
+ }
+}
+
+/* Swaps the masked bits of a1<>a2 and b1<>b2 */
+static void gfar_swap_bits(struct gfar_filer_entry *a1,
+ struct gfar_filer_entry *a2,
+ struct gfar_filer_entry *b1,
+ struct gfar_filer_entry *b2, u32 mask)
+{
+ u32 temp[4];
+ temp[0] = a1->ctrl & mask;
+ temp[1] = a2->ctrl & mask;
+ temp[2] = b1->ctrl & mask;
+ temp[3] = b2->ctrl & mask;
+
+ a1->ctrl &= ~mask;
+ a2->ctrl &= ~mask;
+ b1->ctrl &= ~mask;
+ b2->ctrl &= ~mask;
+
+ a1->ctrl |= temp[1];
+ a2->ctrl |= temp[0];
+ b1->ctrl |= temp[3];
+ b2->ctrl |= temp[2];
+}
+
+/* Generate a list consisting of masks values with their start and
+ * end of validity and block as indicator for parts belonging
+ * together (glued by ANDs) in mask_table
+ */
+static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
+ struct filer_table *tab)
+{
+ u32 i, and_index = 0, block_index = 1;
+
+ for (i = 0; i < tab->index; i++) {
+
+ /* LSByte of control = 0 sets a mask */
+ if (!(tab->fe[i].ctrl & 0xF)) {
+ mask_table[and_index].mask = tab->fe[i].prop;
+ mask_table[and_index].start = i;
+ mask_table[and_index].block = block_index;
+ if (and_index >= 1)
+ mask_table[and_index - 1].end = i - 1;
+ and_index++;
+ }
+ /* cluster starts and ends will be separated because they should
+ * hold their position
+ */
+ if (tab->fe[i].ctrl & RQFCR_CLE)
+ block_index++;
+ /* A not set AND indicates the end of a depended block */
+ if (!(tab->fe[i].ctrl & RQFCR_AND))
+ block_index++;
+ }
+
+ mask_table[and_index - 1].end = i - 1;
+
+ return and_index;
+}
+
+/* Sorts the entries of mask_table by the values of the masks.
+ * Important: The 0xFF80 flags of the first and last entry of a
+ * block must hold their position (which queue, CLusterEnable, ReJEct,
+ * AND)
+ */
+static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
+ struct filer_table *temp_table, u32 and_index)
+{
+ /* Pointer to compare function (_asc or _desc) */
+ int (*gfar_comp)(const void *, const void *);
+
+ u32 i, size = 0, start = 0, prev = 1;
+ u32 old_first, old_last, new_first, new_last;
+
+ gfar_comp = &gfar_comp_desc;
+
+ for (i = 0; i < and_index; i++) {
+ if (prev != mask_table[i].block) {
+ old_first = mask_table[start].start + 1;
+ old_last = mask_table[i - 1].end;
+ sort(mask_table + start, size,
+ sizeof(struct gfar_mask_entry),
+ gfar_comp, &gfar_swap);
+
+ /* Toggle order for every block. This makes the
+ * thing more efficient!
+ */
+ if (gfar_comp == gfar_comp_desc)
+ gfar_comp = &gfar_comp_asc;
+ else
+ gfar_comp = &gfar_comp_desc;
+
+ new_first = mask_table[start].start + 1;
+ new_last = mask_table[i - 1].end;
+
+ gfar_swap_bits(&temp_table->fe[new_first],
+ &temp_table->fe[old_first],
+ &temp_table->fe[new_last],
+ &temp_table->fe[old_last],
+ RQFCR_QUEUE | RQFCR_CLE |
+ RQFCR_RJE | RQFCR_AND);
+
+ start = i;
+ size = 0;
+ }
+ size++;
+ prev = mask_table[i].block;
+ }
+}
+
+/* Reduces the number of masks needed in the filer table to save entries
+ * This is done by sorting the masks of a depended block. A depended block is
+ * identified by gluing ANDs or CLE. The sorting order toggles after every
+ * block. Of course entries in scope of a mask must change their location with
+ * it.
+ */
+static int gfar_optimize_filer_masks(struct filer_table *tab)
+{
+ struct filer_table *temp_table;
+ struct gfar_mask_entry *mask_table;
+
+ u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
+ s32 ret = 0;
+
+ /* We need a copy of the filer table because
+ * we want to change its order
+ */
+ temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
+ if (temp_table == NULL)
+ return -ENOMEM;
+
+ mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
+ sizeof(struct gfar_mask_entry), GFP_KERNEL);
+
+ if (mask_table == NULL) {
+ ret = -ENOMEM;
+ goto end;
+ }
+
+ and_index = gfar_generate_mask_table(mask_table, tab);
+
+ gfar_sort_mask_table(mask_table, temp_table, and_index);
+
+ /* Now we can copy the data from our duplicated filer table to
+ * the real one in the order the mask table says
+ */
+ for (i = 0; i < and_index; i++) {
+ size = mask_table[i].end - mask_table[i].start + 1;
+ gfar_copy_filer_entries(&(tab->fe[j]),
+ &(temp_table->fe[mask_table[i].start]), size);
+ j += size;
+ }
+
+ /* And finally we just have to check for duplicated masks and drop the
+ * second ones
+ */
+ for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
+ if (tab->fe[i].ctrl == 0x80) {
+ previous_mask = i++;
+ break;
+ }
+ }
+ for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
+ if (tab->fe[i].ctrl == 0x80) {
+ if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
+ /* Two identical ones found!
+ * So drop the second one!
+ */
+ gfar_trim_filer_entries(i, i, tab);
+ } else
+ /* Not identical! */
+ previous_mask = i;
+ }
+ }
+
+ kfree(mask_table);
+end: kfree(temp_table);
+ return ret;
+}
+
+/* Write the bit-pattern from software's buffer to hardware registers */
+static int gfar_write_filer_table(struct gfar_private *priv,
+ struct filer_table *tab)
+{
+ u32 i = 0;
+ if (tab->index > MAX_FILER_IDX - 1)
+ return -EBUSY;
+
+ /* Fill regular entries */
+ for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].prop);
+ i++)
+ gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
+ /* Fill the rest with fall-troughs */
+ for (; i < MAX_FILER_IDX - 1; i++)
+ gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
+ /* Last entry must be default accept
+ * because that's what people expect
+ */
+ gfar_write_filer(priv, i, 0x20, 0x0);
+
+ return 0;
+}
+
+static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
+ struct gfar_private *priv)
+{
+
+ if (flow->flow_type & FLOW_EXT) {
+ if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
+ netdev_warn(priv->ndev,
+ "User-specific data not supported!\n");
+ if (~flow->m_ext.vlan_etype)
+ netdev_warn(priv->ndev,
+ "VLAN-etype not supported!\n");
+ }
+ if (flow->flow_type == IP_USER_FLOW)
+ if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
+ netdev_warn(priv->ndev,
+ "IP-Version differing from IPv4 not supported!\n");
+
+ return 0;
+}
+
+static int gfar_process_filer_changes(struct gfar_private *priv)
+{
+ struct ethtool_flow_spec_container *j;
+ struct filer_table *tab;
+ s32 i = 0;
+ s32 ret = 0;
+
+ /* So index is set to zero, too! */
+ tab = kzalloc(sizeof(*tab), GFP_KERNEL);
+ if (tab == NULL)
+ return -ENOMEM;
+
+ /* Now convert the existing filer data from flow_spec into
+ * filer tables binary format
+ */
+ list_for_each_entry(j, &priv->rx_list.list, list) {
+ ret = gfar_convert_to_filer(&j->fs, tab);
+ if (ret == -EBUSY) {
+ netdev_err(priv->ndev,
+ "Rule not added: No free space!\n");
+ goto end;
+ }
+ if (ret == -1) {
+ netdev_err(priv->ndev,
+ "Rule not added: Unsupported Flow-type!\n");
+ goto end;
+ }
+ }
+
+ i = tab->index;
+
+ /* Optimizations to save entries */
+ gfar_cluster_filer(tab);
+ gfar_optimize_filer_masks(tab);
+
+ pr_debug("\tSummary:\n"
+ "\tData on hardware: %d\n"
+ "\tCompression rate: %d%%\n",
+ tab->index, 100 - (100 * tab->index) / i);
+
+ /* Write everything to hardware */
+ ret = gfar_write_filer_table(priv, tab);
+ if (ret == -EBUSY) {
+ netdev_err(priv->ndev, "Rule not added: No free space!\n");
+ goto end;
+ }
+
+end:
+ kfree(tab);
+ return ret;
+}
+
+static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
+{
+ u32 i = 0;
+
+ for (i = 0; i < sizeof(flow->m_u); i++)
+ flow->m_u.hdata[i] ^= 0xFF;
+
+ flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
+ flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
+ flow->m_ext.data[0] ^= cpu_to_be32(~0);
+ flow->m_ext.data[1] ^= cpu_to_be32(~0);
+}
+
+static int gfar_add_cls(struct gfar_private *priv,
+ struct ethtool_rx_flow_spec *flow)
+{
+ struct ethtool_flow_spec_container *temp, *comp;
+ int ret = 0;
+
+ temp = kmalloc(sizeof(*temp), GFP_KERNEL);
+ if (temp == NULL)
+ return -ENOMEM;
+ memcpy(&temp->fs, flow, sizeof(temp->fs));
+
+ gfar_invert_masks(&temp->fs);
+ ret = gfar_check_capability(&temp->fs, priv);
+ if (ret)
+ goto clean_mem;
+ /* Link in the new element at the right @location */
+ if (list_empty(&priv->rx_list.list)) {
+ ret = gfar_check_filer_hardware(priv);
+ if (ret != 0)
+ goto clean_mem;
+ list_add(&temp->list, &priv->rx_list.list);
+ goto process;
+ } else {
+ list_for_each_entry(comp, &priv->rx_list.list, list) {
+ if (comp->fs.location > flow->location) {
+ list_add_tail(&temp->list, &comp->list);
+ goto process;
+ }
+ if (comp->fs.location == flow->location) {
+ netdev_err(priv->ndev,
+ "Rule not added: ID %d not free!\n",
+ flow->location);
+ ret = -EBUSY;
+ goto clean_mem;
+ }
+ }
+ list_add_tail(&temp->list, &priv->rx_list.list);
+ }
+
+process:
+ ret = gfar_process_filer_changes(priv);
+ if (ret)
+ goto clean_list;
+ priv->rx_list.count++;
+ return ret;
+
+clean_list:
+ list_del(&temp->list);
+clean_mem:
+ kfree(temp);
+ return ret;
+}
+
+static int gfar_del_cls(struct gfar_private *priv, u32 loc)
+{
+ struct ethtool_flow_spec_container *comp;
+ u32 ret = -EINVAL;
+
+ if (list_empty(&priv->rx_list.list))
+ return ret;
+
+ list_for_each_entry(comp, &priv->rx_list.list, list) {
+ if (comp->fs.location == loc) {
+ list_del(&comp->list);
+ kfree(comp);
+ priv->rx_list.count--;
+ gfar_process_filer_changes(priv);
+ ret = 0;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
+{
+ struct ethtool_flow_spec_container *comp;
+ u32 ret = -EINVAL;
+
+ list_for_each_entry(comp, &priv->rx_list.list, list) {
+ if (comp->fs.location == cmd->fs.location) {
+ memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
+ gfar_invert_masks(&cmd->fs);
+ ret = 0;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int gfar_get_cls_all(struct gfar_private *priv,
+ struct ethtool_rxnfc *cmd, u32 *rule_locs)
+{
+ struct ethtool_flow_spec_container *comp;
+ u32 i = 0;
+
+ list_for_each_entry(comp, &priv->rx_list.list, list) {
+ if (i == cmd->rule_cnt)
+ return -EMSGSIZE;
+ rule_locs[i] = comp->fs.location;
+ i++;
+ }
+
+ cmd->data = MAX_FILER_IDX;
+ cmd->rule_cnt = i;
+
+ return 0;
+}
+
+static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int ret = 0;
+
+ if (test_bit(GFAR_RESETTING, &priv->state))
+ return -EBUSY;
+
+ mutex_lock(&priv->rx_queue_access);
+
+ switch (cmd->cmd) {
+ case ETHTOOL_SRXFH:
+ ret = gfar_set_hash_opts(priv, cmd);
+ break;
+ case ETHTOOL_SRXCLSRLINS:
+ if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
+ cmd->fs.ring_cookie >= priv->num_rx_queues) ||
+ cmd->fs.location >= MAX_FILER_IDX) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = gfar_add_cls(priv, &cmd->fs);
+ break;
+ case ETHTOOL_SRXCLSRLDEL:
+ ret = gfar_del_cls(priv, cmd->fs.location);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ mutex_unlock(&priv->rx_queue_access);
+
+ return ret;
+}
+
+static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
+ u32 *rule_locs)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int ret = 0;
+
+ switch (cmd->cmd) {
+ case ETHTOOL_GRXRINGS:
+ cmd->data = priv->num_rx_queues;
+ break;
+ case ETHTOOL_GRXCLSRLCNT:
+ cmd->rule_cnt = priv->rx_list.count;
+ break;
+ case ETHTOOL_GRXCLSRULE:
+ ret = gfar_get_cls(priv, cmd);
+ break;
+ case ETHTOOL_GRXCLSRLALL:
+ ret = gfar_get_cls_all(priv, cmd, rule_locs);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+int gfar_phc_index = -1;
+EXPORT_SYMBOL(gfar_phc_index);
+
+static int gfar_get_ts_info(struct net_device *dev,
+ struct ethtool_ts_info *info)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
+ info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE;
+ info->phc_index = -1;
+ return 0;
+ }
+ info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+ info->phc_index = gfar_phc_index;
+ info->tx_types = (1 << HWTSTAMP_TX_OFF) |
+ (1 << HWTSTAMP_TX_ON);
+ info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
+ (1 << HWTSTAMP_FILTER_ALL);
+ return 0;
+}
+
+const struct ethtool_ops gfar_ethtool_ops = {
+ .get_settings = gfar_gsettings,
+ .set_settings = gfar_ssettings,
+ .get_drvinfo = gfar_gdrvinfo,
+ .get_regs_len = gfar_reglen,
+ .get_regs = gfar_get_regs,
+ .get_link = ethtool_op_get_link,
+ .get_coalesce = gfar_gcoalesce,
+ .set_coalesce = gfar_scoalesce,
+ .get_ringparam = gfar_gringparam,
+ .set_ringparam = gfar_sringparam,
+ .get_pauseparam = gfar_gpauseparam,
+ .set_pauseparam = gfar_spauseparam,
+ .get_strings = gfar_gstrings,
+ .get_sset_count = gfar_sset_count,
+ .get_ethtool_stats = gfar_fill_stats,
+ .get_msglevel = gfar_get_msglevel,
+ .set_msglevel = gfar_set_msglevel,
+#ifdef CONFIG_PM
+ .get_wol = gfar_get_wol,
+ .set_wol = gfar_set_wol,
+#endif
+ .set_rxnfc = gfar_set_nfc,
+ .get_rxnfc = gfar_get_nfc,
+ .get_ts_info = gfar_get_ts_info,
+};
Code Review / kvmfornfv.git / blobdiff