Merge branch 'r8169-mark-device-as-detached-in-PCI-D3-and-improve-locking'
Heiner Kallweit says: ==================== r8169: mark device as detached in PCI D3 and improve locking Mark the netdevice as detached whenever parent is in PCI D3hot and not accessible. This mainly applies to runtime-suspend state. In addition take RTNL lock in suspend calls, this allows to remove the driver-specific mutex and improve PM callbacks in general. ==================== Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
commit
3b87cfefab
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@ -611,7 +611,6 @@ struct rtl8169_private {
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struct {
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DECLARE_BITMAP(flags, RTL_FLAG_MAX);
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struct mutex mutex;
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struct work_struct work;
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} wk;
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@ -663,16 +662,6 @@ static inline struct device *tp_to_dev(struct rtl8169_private *tp)
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return &tp->pci_dev->dev;
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}
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static void rtl_lock_work(struct rtl8169_private *tp)
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{
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mutex_lock(&tp->wk.mutex);
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}
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static void rtl_unlock_work(struct rtl8169_private *tp)
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{
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mutex_unlock(&tp->wk.mutex);
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}
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static void rtl_lock_config_regs(struct rtl8169_private *tp)
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{
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RTL_W8(tp, Cfg9346, Cfg9346_Lock);
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@ -1348,10 +1337,8 @@ static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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rtl_lock_work(tp);
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wol->supported = WAKE_ANY;
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wol->wolopts = tp->saved_wolopts;
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rtl_unlock_work(tp);
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}
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static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
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@ -1422,23 +1409,12 @@ static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
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static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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struct device *d = tp_to_dev(tp);
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if (wol->wolopts & ~WAKE_ANY)
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return -EINVAL;
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pm_runtime_get_noresume(d);
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rtl_lock_work(tp);
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tp->saved_wolopts = wol->wolopts;
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if (pm_runtime_active(d))
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__rtl8169_set_wol(tp, tp->saved_wolopts);
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rtl_unlock_work(tp);
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pm_runtime_put_noidle(d);
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__rtl8169_set_wol(tp, tp->saved_wolopts);
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return 0;
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}
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@ -1502,8 +1478,6 @@ static int rtl8169_set_features(struct net_device *dev,
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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rtl_lock_work(tp);
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rtl_set_rx_config_features(tp, features);
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if (features & NETIF_F_RXCSUM)
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@ -1521,8 +1495,6 @@ static int rtl8169_set_features(struct net_device *dev,
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RTL_W16(tp, CPlusCmd, tp->cp_cmd);
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rtl_pci_commit(tp);
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rtl_unlock_work(tp);
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return 0;
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}
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@ -1548,10 +1520,8 @@ static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
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u32 *dw = p;
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int i;
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rtl_lock_work(tp);
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for (i = 0; i < R8169_REGS_SIZE; i += 4)
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memcpy_fromio(dw++, data++, 4);
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rtl_unlock_work(tp);
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}
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static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
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@ -1657,17 +1627,10 @@ static void rtl8169_get_ethtool_stats(struct net_device *dev,
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struct ethtool_stats *stats, u64 *data)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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struct device *d = tp_to_dev(tp);
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struct rtl8169_counters *counters = tp->counters;
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struct rtl8169_counters *counters;
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ASSERT_RTNL();
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pm_runtime_get_noresume(d);
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if (pm_runtime_active(d))
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rtl8169_update_counters(tp);
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pm_runtime_put_noidle(d);
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counters = tp->counters;
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rtl8169_update_counters(tp);
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data[0] = le64_to_cpu(counters->tx_packets);
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data[1] = le64_to_cpu(counters->rx_packets);
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@ -1874,8 +1837,6 @@ static int rtl_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
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units = DIV_ROUND_UP(ec->rx_coalesce_usecs * 1000U, scale);
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w |= FIELD_PREP(RTL_COALESCE_RX_USECS, units);
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rtl_lock_work(tp);
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RTL_W16(tp, IntrMitigate, w);
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/* Meaning of PktCntrDisable bit changed from RTL8168e-vl */
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@ -1891,56 +1852,32 @@ static int rtl_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
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RTL_W16(tp, CPlusCmd, tp->cp_cmd);
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rtl_pci_commit(tp);
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rtl_unlock_work(tp);
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return 0;
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}
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static int rtl8169_get_eee(struct net_device *dev, struct ethtool_eee *data)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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struct device *d = tp_to_dev(tp);
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int ret;
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if (!rtl_supports_eee(tp))
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return -EOPNOTSUPP;
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pm_runtime_get_noresume(d);
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if (!pm_runtime_active(d)) {
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ret = -EOPNOTSUPP;
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} else {
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ret = phy_ethtool_get_eee(tp->phydev, data);
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}
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pm_runtime_put_noidle(d);
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return ret;
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return phy_ethtool_get_eee(tp->phydev, data);
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}
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static int rtl8169_set_eee(struct net_device *dev, struct ethtool_eee *data)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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struct device *d = tp_to_dev(tp);
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int ret;
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if (!rtl_supports_eee(tp))
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return -EOPNOTSUPP;
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pm_runtime_get_noresume(d);
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if (!pm_runtime_active(d)) {
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ret = -EOPNOTSUPP;
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goto out;
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}
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ret = phy_ethtool_set_eee(tp->phydev, data);
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if (!ret)
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tp->eee_adv = phy_read_mmd(dev->phydev, MDIO_MMD_AN,
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MDIO_AN_EEE_ADV);
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out:
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pm_runtime_put_noidle(d);
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return ret;
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}
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@ -2198,8 +2135,6 @@ static void rtl8169_init_phy(struct rtl8169_private *tp)
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static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
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{
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rtl_lock_work(tp);
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rtl_unlock_config_regs(tp);
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RTL_W32(tp, MAC4, addr[4] | addr[5] << 8);
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@ -2212,26 +2147,18 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
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rtl_rar_exgmac_set(tp, addr);
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rtl_lock_config_regs(tp);
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rtl_unlock_work(tp);
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}
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static int rtl_set_mac_address(struct net_device *dev, void *p)
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{
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struct rtl8169_private *tp = netdev_priv(dev);
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struct device *d = tp_to_dev(tp);
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int ret;
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ret = eth_mac_addr(dev, p);
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if (ret)
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return ret;
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pm_runtime_get_noresume(d);
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if (pm_runtime_active(d))
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rtl_rar_set(tp, dev->dev_addr);
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pm_runtime_put_noidle(d);
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rtl_rar_set(tp, dev->dev_addr);
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return 0;
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}
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@ -3977,10 +3904,9 @@ static void rtl8169_cleanup(struct rtl8169_private *tp, bool going_down)
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static void rtl_reset_work(struct rtl8169_private *tp)
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{
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struct net_device *dev = tp->dev;
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int i;
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netif_stop_queue(dev);
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netif_stop_queue(tp->dev);
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rtl8169_cleanup(tp, false);
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@ -3989,7 +3915,6 @@ static void rtl_reset_work(struct rtl8169_private *tp)
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napi_enable(&tp->napi);
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rtl_hw_start(tp);
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netif_wake_queue(dev);
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}
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static void rtl8169_tx_timeout(struct net_device *dev, unsigned int txqueue)
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@ -4568,16 +4493,18 @@ static void rtl_task(struct work_struct *work)
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struct rtl8169_private *tp =
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container_of(work, struct rtl8169_private, wk.work);
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rtl_lock_work(tp);
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rtnl_lock();
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if (!netif_running(tp->dev) ||
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!test_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags))
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goto out_unlock;
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if (test_and_clear_bit(RTL_FLAG_TASK_RESET_PENDING, tp->wk.flags))
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if (test_and_clear_bit(RTL_FLAG_TASK_RESET_PENDING, tp->wk.flags)) {
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rtl_reset_work(tp);
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netif_wake_queue(tp->dev);
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}
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out_unlock:
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rtl_unlock_work(tp);
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rtnl_unlock();
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}
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static int rtl8169_poll(struct napi_struct *napi, int budget)
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@ -4639,8 +4566,6 @@ static int r8169_phy_connect(struct rtl8169_private *tp)
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static void rtl8169_down(struct rtl8169_private *tp)
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{
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rtl_lock_work(tp);
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/* Clear all task flags */
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bitmap_zero(tp->wk.flags, RTL_FLAG_MAX);
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@ -4651,8 +4576,17 @@ static void rtl8169_down(struct rtl8169_private *tp)
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rtl8169_cleanup(tp, true);
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rtl_pll_power_down(tp);
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}
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rtl_unlock_work(tp);
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static void rtl8169_up(struct rtl8169_private *tp)
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{
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rtl_pll_power_up(tp);
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rtl8169_init_phy(tp);
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napi_enable(&tp->napi);
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set_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags);
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rtl_reset_work(tp);
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phy_start(tp->phydev);
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}
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static int rtl8169_close(struct net_device *dev)
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@ -4730,25 +4664,10 @@ static int rtl_open(struct net_device *dev)
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if (retval)
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goto err_free_irq;
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rtl_lock_work(tp);
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set_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags);
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napi_enable(&tp->napi);
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rtl8169_init_phy(tp);
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rtl_pll_power_up(tp);
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rtl_hw_start(tp);
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rtl8169_up(tp);
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rtl8169_init_counter_offsets(tp);
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phy_start(tp->phydev);
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netif_start_queue(dev);
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rtl_unlock_work(tp);
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pm_runtime_put_sync(&pdev->dev);
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out:
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return retval;
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@ -4820,11 +4739,10 @@ rtl8169_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
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static void rtl8169_net_suspend(struct rtl8169_private *tp)
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{
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if (!netif_running(tp->dev))
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return;
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netif_device_detach(tp->dev);
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rtl8169_down(tp);
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if (netif_running(tp->dev))
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rtl8169_down(tp);
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}
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#ifdef CONFIG_PM
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@ -4833,35 +4751,23 @@ static int __maybe_unused rtl8169_suspend(struct device *device)
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{
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struct rtl8169_private *tp = dev_get_drvdata(device);
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rtnl_lock();
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rtl8169_net_suspend(tp);
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rtnl_unlock();
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return 0;
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}
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static void __rtl8169_resume(struct rtl8169_private *tp)
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{
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netif_device_attach(tp->dev);
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rtl_pll_power_up(tp);
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rtl8169_init_phy(tp);
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phy_start(tp->phydev);
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rtl_lock_work(tp);
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napi_enable(&tp->napi);
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set_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags);
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rtl_reset_work(tp);
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rtl_unlock_work(tp);
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}
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static int __maybe_unused rtl8169_resume(struct device *device)
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static int rtl8169_resume(struct device *device)
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{
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struct rtl8169_private *tp = dev_get_drvdata(device);
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rtl_rar_set(tp, tp->dev->dev_addr);
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if (netif_running(tp->dev))
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__rtl8169_resume(tp);
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if (tp->TxDescArray)
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rtl8169_up(tp);
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netif_device_attach(tp->dev);
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return 0;
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}
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@ -4870,14 +4776,15 @@ static int rtl8169_runtime_suspend(struct device *device)
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{
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struct rtl8169_private *tp = dev_get_drvdata(device);
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if (!tp->TxDescArray)
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if (!tp->TxDescArray) {
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netif_device_detach(tp->dev);
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return 0;
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}
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rtl_lock_work(tp);
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rtnl_lock();
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__rtl8169_set_wol(tp, WAKE_PHY);
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rtl_unlock_work(tp);
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rtl8169_net_suspend(tp);
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rtnl_unlock();
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return 0;
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}
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@ -4886,16 +4793,9 @@ static int rtl8169_runtime_resume(struct device *device)
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{
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struct rtl8169_private *tp = dev_get_drvdata(device);
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rtl_rar_set(tp, tp->dev->dev_addr);
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rtl_lock_work(tp);
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__rtl8169_set_wol(tp, tp->saved_wolopts);
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rtl_unlock_work(tp);
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if (tp->TxDescArray)
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__rtl8169_resume(tp);
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return 0;
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return rtl8169_resume(device);
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}
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static int rtl8169_runtime_idle(struct device *device)
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@ -4937,7 +4837,9 @@ static void rtl_shutdown(struct pci_dev *pdev)
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{
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struct rtl8169_private *tp = pci_get_drvdata(pdev);
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rtnl_lock();
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rtl8169_net_suspend(tp);
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rtnl_unlock();
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/* Restore original MAC address */
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rtl_rar_set(tp, tp->dev->perm_addr);
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@ -5343,7 +5245,6 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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return rc;
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}
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mutex_init(&tp->wk.mutex);
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INIT_WORK(&tp->wk.work, rtl_task);
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u64_stats_init(&tp->rx_stats.syncp);
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u64_stats_init(&tp->tx_stats.syncp);
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@ -143,6 +143,7 @@
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#include <linux/net_namespace.h>
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#include <linux/indirect_call_wrapper.h>
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#include <net/devlink.h>
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#include <linux/pm_runtime.h>
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#include "net-sysfs.h"
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@ -1492,8 +1493,13 @@ static int __dev_open(struct net_device *dev, struct netlink_ext_ack *extack)
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ASSERT_RTNL();
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if (!netif_device_present(dev))
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return -ENODEV;
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if (!netif_device_present(dev)) {
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/* may be detached because parent is runtime-suspended */
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if (dev->dev.parent)
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pm_runtime_resume(dev->dev.parent);
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if (!netif_device_present(dev))
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return -ENODEV;
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}
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/* Block netpoll from trying to do any rx path servicing.
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* If we don't do this there is a chance ndo_poll_controller
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