net: systemport: Add support for WAKE_FILTER
The SYSTEMPORT MAC allows up to 8 filters to be programmed to wake-up from LAN. Verify that we have up to 8 filters and program them to the appropriate RXCHK entries to be matched (along with their masks). We need to update the entry and exit to Wake-on-LAN mode to keep the RXCHK engine running to match during suspend, but this is otherwise fairly similar to Magic Packet detection. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
Florian Fainelli
David S. Miller
parent
8a75f4f2ac
commit
bb9051a2b2
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@ -521,7 +521,7 @@ static void bcm_sysport_get_wol(struct net_device *dev,
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struct bcm_sysport_priv *priv = netdev_priv(dev);
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u32 reg;
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wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE;
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wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
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wol->wolopts = priv->wolopts;
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if (!(priv->wolopts & WAKE_MAGICSECURE))
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@ -539,7 +539,7 @@ static int bcm_sysport_set_wol(struct net_device *dev,
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{
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struct bcm_sysport_priv *priv = netdev_priv(dev);
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struct device *kdev = &priv->pdev->dev;
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u32 supported = WAKE_MAGIC | WAKE_MAGICSECURE;
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u32 supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
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if (!device_can_wakeup(kdev))
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return -ENOTSUPP;
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@ -1043,7 +1043,7 @@ static int bcm_sysport_poll(struct napi_struct *napi, int budget)
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static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable)
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{
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u32 reg;
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u32 reg, bit;
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reg = umac_readl(priv, UMAC_MPD_CTRL);
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if (enable)
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@ -1051,12 +1051,32 @@ static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable)
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else
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reg &= ~MPD_EN;
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umac_writel(priv, reg, UMAC_MPD_CTRL);
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if (priv->is_lite)
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bit = RBUF_ACPI_EN_LITE;
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else
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bit = RBUF_ACPI_EN;
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reg = rbuf_readl(priv, RBUF_CONTROL);
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if (enable)
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reg |= bit;
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else
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reg &= ~bit;
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rbuf_writel(priv, reg, RBUF_CONTROL);
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}
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static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv *priv)
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{
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u32 reg;
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/* Stop monitoring MPD interrupt */
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intrl2_0_mask_set(priv, INTRL2_0_MPD);
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intrl2_0_mask_set(priv, INTRL2_0_MPD | INTRL2_0_BRCM_MATCH_TAG);
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/* Disable RXCHK, active filters and Broadcom tag matching */
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reg = rxchk_readl(priv, RXCHK_CONTROL);
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reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
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RXCHK_BRCM_TAG_MATCH_SHIFT | RXCHK_EN | RXCHK_BRCM_TAG_EN);
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rxchk_writel(priv, reg, RXCHK_CONTROL);
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/* Clear the MagicPacket detection logic */
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mpd_enable_set(priv, false);
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@ -1085,6 +1105,7 @@ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
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struct bcm_sysport_priv *priv = netdev_priv(dev);
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struct bcm_sysport_tx_ring *txr;
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unsigned int ring, ring_bit;
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u32 reg;
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priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
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~intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS);
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@ -1111,7 +1132,14 @@ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
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bcm_sysport_tx_reclaim_all(priv);
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if (priv->irq0_stat & INTRL2_0_MPD)
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netdev_info(priv->netdev, "Wake-on-LAN interrupt!\n");
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netdev_info(priv->netdev, "Wake-on-LAN (MPD) interrupt!\n");
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if (priv->irq0_stat & INTRL2_0_BRCM_MATCH_TAG) {
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reg = rxchk_readl(priv, RXCHK_BRCM_TAG_MATCH_STATUS) &
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RXCHK_BRCM_TAG_MATCH_MASK;
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netdev_info(priv->netdev,
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"Wake-on-LAN (filters 0x%02x) interrupt!\n", reg);
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}
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if (!priv->is_lite)
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goto out;
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@ -2096,6 +2124,132 @@ static int bcm_sysport_stop(struct net_device *dev)
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return 0;
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}
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static int bcm_sysport_rule_find(struct bcm_sysport_priv *priv,
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u64 location)
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{
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unsigned int index;
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u32 reg;
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for_each_set_bit(index, priv->filters, RXCHK_BRCM_TAG_MAX) {
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reg = rxchk_readl(priv, RXCHK_BRCM_TAG(index));
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reg >>= RXCHK_BRCM_TAG_CID_SHIFT;
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reg &= RXCHK_BRCM_TAG_CID_MASK;
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if (reg == location)
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return index;
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}
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return -EINVAL;
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}
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static int bcm_sysport_rule_get(struct bcm_sysport_priv *priv,
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struct ethtool_rxnfc *nfc)
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{
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int index;
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/* This is not a rule that we know about */
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index = bcm_sysport_rule_find(priv, nfc->fs.location);
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if (index < 0)
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return -EOPNOTSUPP;
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nfc->fs.ring_cookie = RX_CLS_FLOW_WAKE;
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return 0;
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}
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static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv,
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struct ethtool_rxnfc *nfc)
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{
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unsigned int index;
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u32 reg;
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/* We cannot match locations greater than what the classification ID
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* permits (256 entries)
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*/
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if (nfc->fs.location > RXCHK_BRCM_TAG_CID_MASK)
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return -E2BIG;
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/* We cannot support flows that are not destined for a wake-up */
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if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE)
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return -EOPNOTSUPP;
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/* All filters are already in use, we cannot match more rules */
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if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) ==
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RXCHK_BRCM_TAG_MAX)
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return -ENOSPC;
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index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX);
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if (index > RXCHK_BRCM_TAG_MAX)
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return -ENOSPC;
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/* Location is the classification ID, and index is the position
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* within one of our 8 possible filters to be programmed
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*/
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reg = rxchk_readl(priv, RXCHK_BRCM_TAG(index));
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reg &= ~(RXCHK_BRCM_TAG_CID_MASK << RXCHK_BRCM_TAG_CID_SHIFT);
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reg |= nfc->fs.location << RXCHK_BRCM_TAG_CID_SHIFT;
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rxchk_writel(priv, reg, RXCHK_BRCM_TAG(index));
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rxchk_writel(priv, 0xff00ffff, RXCHK_BRCM_TAG_MASK(index));
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set_bit(index, priv->filters);
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return 0;
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}
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static int bcm_sysport_rule_del(struct bcm_sysport_priv *priv,
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u64 location)
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{
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int index;
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/* This is not a rule that we know about */
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index = bcm_sysport_rule_find(priv, location);
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if (index < 0)
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return -EOPNOTSUPP;
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/* No need to disable this filter if it was enabled, this will
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* be taken care of during suspend time by bcm_sysport_suspend_to_wol
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*/
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clear_bit(index, priv->filters);
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return 0;
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}
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static int bcm_sysport_get_rxnfc(struct net_device *dev,
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struct ethtool_rxnfc *nfc, u32 *rule_locs)
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{
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struct bcm_sysport_priv *priv = netdev_priv(dev);
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int ret = -EOPNOTSUPP;
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switch (nfc->cmd) {
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case ETHTOOL_GRXCLSRULE:
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ret = bcm_sysport_rule_get(priv, nfc);
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break;
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default:
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break;
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}
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return ret;
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}
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static int bcm_sysport_set_rxnfc(struct net_device *dev,
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struct ethtool_rxnfc *nfc)
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{
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struct bcm_sysport_priv *priv = netdev_priv(dev);
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int ret = -EOPNOTSUPP;
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switch (nfc->cmd) {
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case ETHTOOL_SRXCLSRLINS:
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ret = bcm_sysport_rule_set(priv, nfc);
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break;
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case ETHTOOL_SRXCLSRLDEL:
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ret = bcm_sysport_rule_del(priv, nfc->fs.location);
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break;
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default:
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break;
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}
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return ret;
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}
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static const struct ethtool_ops bcm_sysport_ethtool_ops = {
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.get_drvinfo = bcm_sysport_get_drvinfo,
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.get_msglevel = bcm_sysport_get_msglvl,
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@ -2110,6 +2264,8 @@ static const struct ethtool_ops bcm_sysport_ethtool_ops = {
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.set_coalesce = bcm_sysport_set_coalesce,
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.get_link_ksettings = phy_ethtool_get_link_ksettings,
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.set_link_ksettings = phy_ethtool_set_link_ksettings,
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.get_rxnfc = bcm_sysport_get_rxnfc,
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.set_rxnfc = bcm_sysport_set_rxnfc,
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};
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static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb,
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@ -2434,16 +2590,39 @@ static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv)
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{
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struct net_device *ndev = priv->netdev;
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unsigned int timeout = 1000;
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unsigned int index, i = 0;
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u32 reg;
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/* Password has already been programmed */
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reg = umac_readl(priv, UMAC_MPD_CTRL);
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reg |= MPD_EN;
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if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE))
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reg |= MPD_EN;
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reg &= ~PSW_EN;
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if (priv->wolopts & WAKE_MAGICSECURE)
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reg |= PSW_EN;
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umac_writel(priv, reg, UMAC_MPD_CTRL);
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if (priv->wolopts & WAKE_FILTER) {
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/* Turn on ACPI matching to steal packets from RBUF */
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reg = rbuf_readl(priv, RBUF_CONTROL);
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if (priv->is_lite)
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reg |= RBUF_ACPI_EN_LITE;
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else
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reg |= RBUF_ACPI_EN;
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rbuf_writel(priv, reg, RBUF_CONTROL);
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/* Enable RXCHK, active filters and Broadcom tag matching */
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reg = rxchk_readl(priv, RXCHK_CONTROL);
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reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
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RXCHK_BRCM_TAG_MATCH_SHIFT);
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for_each_set_bit(index, priv->filters, RXCHK_BRCM_TAG_MAX) {
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reg |= BIT(RXCHK_BRCM_TAG_MATCH_SHIFT + i);
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i++;
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}
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reg |= RXCHK_EN | RXCHK_BRCM_TAG_EN;
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rxchk_writel(priv, reg, RXCHK_CONTROL);
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}
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/* Make sure RBUF entered WoL mode as result */
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do {
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reg = rbuf_readl(priv, RBUF_STATUS);
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@ -2464,7 +2643,7 @@ static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv)
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umac_enable_set(priv, CMD_RX_EN, 1);
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/* Enable the interrupt wake-up source */
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intrl2_0_mask_clear(priv, INTRL2_0_MPD);
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intrl2_0_mask_clear(priv, INTRL2_0_MPD | INTRL2_0_BRCM_MATCH_TAG);
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netif_dbg(priv, wol, ndev, "entered WOL mode\n");
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@ -11,6 +11,7 @@
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#ifndef __BCM_SYSPORT_H
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#define __BCM_SYSPORT_H
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#include <linux/bitmap.h>
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#include <linux/if_vlan.h>
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#include <linux/net_dim.h>
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@ -155,14 +156,18 @@ struct bcm_rsb {
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#define RXCHK_PARSE_AUTH (1 << 22)
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#define RXCHK_BRCM_TAG0 0x04
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#define RXCHK_BRCM_TAG(i) ((i) * RXCHK_BRCM_TAG0)
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#define RXCHK_BRCM_TAG(i) ((i) * 0x4 + RXCHK_BRCM_TAG0)
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#define RXCHK_BRCM_TAG0_MASK 0x24
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#define RXCHK_BRCM_TAG_MASK(i) ((i) * RXCHK_BRCM_TAG0_MASK)
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#define RXCHK_BRCM_TAG_MASK(i) ((i) * 0x4 + RXCHK_BRCM_TAG0_MASK)
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#define RXCHK_BRCM_TAG_MATCH_STATUS 0x44
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#define RXCHK_ETHERTYPE 0x48
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#define RXCHK_BAD_CSUM_CNTR 0x4C
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#define RXCHK_OTHER_DISC_CNTR 0x50
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#define RXCHK_BRCM_TAG_MAX 8
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#define RXCHK_BRCM_TAG_CID_SHIFT 16
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#define RXCHK_BRCM_TAG_CID_MASK 0xff
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/* TXCHCK offsets and defines */
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#define SYS_PORT_TXCHK_OFFSET 0x380
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#define TXCHK_PKT_RDY_THRESH 0x00
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@ -185,6 +190,7 @@ struct bcm_rsb {
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#define RBUF_RSB_SWAP0 (1 << 22)
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#define RBUF_RSB_SWAP1 (1 << 23)
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#define RBUF_ACPI_EN (1 << 23)
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#define RBUF_ACPI_EN_LITE (1 << 24)
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#define RBUF_PKT_RDY_THRESH 0x04
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@ -777,6 +783,7 @@ struct bcm_sysport_priv {
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/* Ethtool */
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u32 msg_enable;
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DECLARE_BITMAP(filters, RXCHK_BRCM_TAG_MAX);
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struct bcm_sysport_stats64 stats64;
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