From 27dc36aefc73ce50a485c9d32c33b18832289203 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:54:36 +0200 Subject: [PATCH 1/6] r8169: change driver data type Change driver private data type to struct rtl8169_private * to avoid some overhead. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 60 ++++++++++------------- 1 file changed, 25 insertions(+), 35 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index d672ae77c6448..810398ef71866 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4816,15 +4816,13 @@ rtl8169_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) pm_runtime_put_noidle(&pdev->dev); } -static void rtl8169_net_suspend(struct net_device *dev) +static void rtl8169_net_suspend(struct rtl8169_private *tp) { - struct rtl8169_private *tp = netdev_priv(dev); - - if (!netif_running(dev)) + if (!netif_running(tp->dev)) return; phy_stop(tp->phydev); - netif_device_detach(dev); + netif_device_detach(tp->dev); rtl_lock_work(tp); napi_disable(&tp->napi); @@ -4840,20 +4838,17 @@ static void rtl8169_net_suspend(struct net_device *dev) static int rtl8169_suspend(struct device *device) { - struct net_device *dev = dev_get_drvdata(device); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = dev_get_drvdata(device); - rtl8169_net_suspend(dev); + rtl8169_net_suspend(tp); clk_disable_unprepare(tp->clk); return 0; } -static void __rtl8169_resume(struct net_device *dev) +static void __rtl8169_resume(struct rtl8169_private *tp) { - struct rtl8169_private *tp = netdev_priv(dev); - - netif_device_attach(dev); + netif_device_attach(tp->dev); rtl_pll_power_up(tp); rtl8169_init_phy(tp); @@ -4869,23 +4864,21 @@ static void __rtl8169_resume(struct net_device *dev) static int rtl8169_resume(struct device *device) { - struct net_device *dev = dev_get_drvdata(device); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = dev_get_drvdata(device); - rtl_rar_set(tp, dev->dev_addr); + rtl_rar_set(tp, tp->dev->dev_addr); clk_prepare_enable(tp->clk); - if (netif_running(dev)) - __rtl8169_resume(dev); + if (netif_running(tp->dev)) + __rtl8169_resume(tp); return 0; } static int rtl8169_runtime_suspend(struct device *device) { - struct net_device *dev = dev_get_drvdata(device); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = dev_get_drvdata(device); if (!tp->TxDescArray) return 0; @@ -4894,7 +4887,7 @@ static int rtl8169_runtime_suspend(struct device *device) __rtl8169_set_wol(tp, WAKE_ANY); rtl_unlock_work(tp); - rtl8169_net_suspend(dev); + rtl8169_net_suspend(tp); /* Update counters before going runtime suspend */ rtl8169_update_counters(tp); @@ -4904,10 +4897,9 @@ static int rtl8169_runtime_suspend(struct device *device) static int rtl8169_runtime_resume(struct device *device) { - struct net_device *dev = dev_get_drvdata(device); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = dev_get_drvdata(device); - rtl_rar_set(tp, dev->dev_addr); + rtl_rar_set(tp, tp->dev->dev_addr); if (!tp->TxDescArray) return 0; @@ -4916,16 +4908,16 @@ static int rtl8169_runtime_resume(struct device *device) __rtl8169_set_wol(tp, tp->saved_wolopts); rtl_unlock_work(tp); - __rtl8169_resume(dev); + __rtl8169_resume(tp); return 0; } static int rtl8169_runtime_idle(struct device *device) { - struct net_device *dev = dev_get_drvdata(device); + struct rtl8169_private *tp = dev_get_drvdata(device); - if (!netif_running(dev) || !netif_carrier_ok(dev)) + if (!netif_running(tp->dev) || !netif_carrier_ok(tp->dev)) pm_schedule_suspend(device, 10000); return -EBUSY; @@ -4970,13 +4962,12 @@ static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp) static void rtl_shutdown(struct pci_dev *pdev) { - struct net_device *dev = pci_get_drvdata(pdev); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = pci_get_drvdata(pdev); - rtl8169_net_suspend(dev); + rtl8169_net_suspend(tp); /* Restore original MAC address */ - rtl_rar_set(tp, dev->perm_addr); + rtl_rar_set(tp, tp->dev->perm_addr); rtl8169_hw_reset(tp); @@ -4993,13 +4984,12 @@ static void rtl_shutdown(struct pci_dev *pdev) static void rtl_remove_one(struct pci_dev *pdev) { - struct net_device *dev = pci_get_drvdata(pdev); - struct rtl8169_private *tp = netdev_priv(dev); + struct rtl8169_private *tp = pci_get_drvdata(pdev); if (pci_dev_run_wake(pdev)) pm_runtime_get_noresume(&pdev->dev); - unregister_netdev(dev); + unregister_netdev(tp->dev); if (r8168_check_dash(tp)) rtl8168_driver_stop(tp); @@ -5007,7 +4997,7 @@ static void rtl_remove_one(struct pci_dev *pdev) rtl_release_firmware(tp); /* restore original MAC address */ - rtl_rar_set(tp, dev->perm_addr); + rtl_rar_set(tp, tp->dev->perm_addr); } static const struct net_device_ops rtl_netdev_ops = { @@ -5446,7 +5436,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (!tp->counters) return -ENOMEM; - pci_set_drvdata(pdev, dev); + pci_set_drvdata(pdev, tp); rc = r8169_mdio_register(tp); if (rc) From 01bd753d039553cf63830823d1dcc8a864174afc Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:55:30 +0200 Subject: [PATCH 2/6] r8169: enable WAKE_PHY as only WoL source when runtime-suspending We go to runtime-suspend few secs after cable removal. As cable is removed "physical link up" is the only meaningful WoL source. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 810398ef71866..6fcd35ac81100 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4884,7 +4884,7 @@ static int rtl8169_runtime_suspend(struct device *device) return 0; rtl_lock_work(tp); - __rtl8169_set_wol(tp, WAKE_ANY); + __rtl8169_set_wol(tp, WAKE_PHY); rtl_unlock_work(tp); rtl8169_net_suspend(tp); From 9fdd50c579802adad09028eba86e5a7ef7c9b738 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:56:14 +0200 Subject: [PATCH 3/6] r8169: don't reset tx ring indexes in rtl8169_tx_clear In places where the indexes have to be reset, we call rtl8169_init_ring_indexes() anyway after rtl8169_tx_clear(). Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 6fcd35ac81100..43652c4508924 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -3955,7 +3955,6 @@ static void rtl8169_tx_clear_range(struct rtl8169_private *tp, u32 start, static void rtl8169_tx_clear(struct rtl8169_private *tp) { rtl8169_tx_clear_range(tp, tp->dirty_tx, NUM_TX_DESC); - tp->cur_tx = tp->dirty_tx = 0; netdev_reset_queue(tp->dev); } From bac75d8565e800f7a4494d8c873e38dce33d6079 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:57:10 +0200 Subject: [PATCH 4/6] r8169: move some calls to rtl8169_hw_reset Move calls that are needed before and after calling rtl8169_hw_reset() into this function. This requires to move the function in the code. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 75 +++++++++++------------ 1 file changed, 36 insertions(+), 39 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 43652c4508924..5f3c50fb0647b 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -2530,36 +2530,6 @@ static void rtl_enable_rxdvgate(struct rtl8169_private *tp) rtl_wait_txrx_fifo_empty(tp); } -static void rtl8169_hw_reset(struct rtl8169_private *tp) -{ - /* Disable interrupts */ - rtl8169_irq_mask_and_ack(tp); - - rtl_rx_close(tp); - - switch (tp->mac_version) { - case RTL_GIGA_MAC_VER_27: - case RTL_GIGA_MAC_VER_28: - case RTL_GIGA_MAC_VER_31: - rtl_loop_wait_low(tp, &rtl_npq_cond, 20, 2000); - break; - case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38: - RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq); - rtl_loop_wait_high(tp, &rtl_txcfg_empty_cond, 100, 666); - break; - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_61: - rtl_enable_rxdvgate(tp); - fsleep(2000); - break; - default: - RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq); - udelay(100); - break; - } - - rtl_hw_reset(tp); -} - static void rtl_set_tx_config_registers(struct rtl8169_private *tp) { u32 val = TX_DMA_BURST << TxDMAShift | @@ -3958,6 +3928,42 @@ static void rtl8169_tx_clear(struct rtl8169_private *tp) netdev_reset_queue(tp->dev); } +static void rtl8169_hw_reset(struct rtl8169_private *tp) +{ + /* Give a racing hard_start_xmit a few cycles to complete. */ + synchronize_rcu(); + + /* Disable interrupts */ + rtl8169_irq_mask_and_ack(tp); + + rtl_rx_close(tp); + + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_27: + case RTL_GIGA_MAC_VER_28: + case RTL_GIGA_MAC_VER_31: + rtl_loop_wait_low(tp, &rtl_npq_cond, 20, 2000); + break; + case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38: + RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq); + rtl_loop_wait_high(tp, &rtl_txcfg_empty_cond, 100, 666); + break; + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_61: + rtl_enable_rxdvgate(tp); + fsleep(2000); + break; + default: + RTL_W8(tp, ChipCmd, RTL_R8(tp, ChipCmd) | StopReq); + fsleep(100); + break; + } + + rtl_hw_reset(tp); + + rtl8169_tx_clear(tp); + rtl8169_init_ring_indexes(tp); +} + static void rtl_reset_work(struct rtl8169_private *tp) { struct net_device *dev = tp->dev; @@ -3965,16 +3971,12 @@ static void rtl_reset_work(struct rtl8169_private *tp) napi_disable(&tp->napi); netif_stop_queue(dev); - synchronize_rcu(); rtl8169_hw_reset(tp); for (i = 0; i < NUM_RX_DESC; i++) rtl8169_mark_to_asic(tp->RxDescArray + i); - rtl8169_tx_clear(tp); - rtl8169_init_ring_indexes(tp); - napi_enable(&tp->napi); rtl_hw_start(tp); netif_wake_queue(dev); @@ -4636,11 +4638,6 @@ static void rtl8169_down(struct net_device *dev) rtl8169_hw_reset(tp); - /* Give a racing hard_start_xmit a few cycles to complete. */ - synchronize_rcu(); - - rtl8169_tx_clear(tp); - rtl8169_rx_clear(tp); rtl_pll_power_down(tp); From 8ac8e8c64b539a548a5f22d6b21f999eea38b0ee Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:58:35 +0200 Subject: [PATCH 5/6] r8169: make rtl8169_down central chip quiesce function Functionality for quiescing the chip is spread across different functions currently. Move it to rtl8169_down(). Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 33 ++++++++--------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 5f3c50fb0647b..fd93377f961fc 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4627,20 +4627,21 @@ static int r8169_phy_connect(struct rtl8169_private *tp) return 0; } -static void rtl8169_down(struct net_device *dev) +static void rtl8169_down(struct rtl8169_private *tp) { - struct rtl8169_private *tp = netdev_priv(dev); + rtl_lock_work(tp); - phy_stop(tp->phydev); + /* Clear all task flags */ + bitmap_zero(tp->wk.flags, RTL_FLAG_MAX); + phy_stop(tp->phydev); napi_disable(&tp->napi); - netif_stop_queue(dev); rtl8169_hw_reset(tp); - rtl8169_rx_clear(tp); - rtl_pll_power_down(tp); + + rtl_unlock_work(tp); } static int rtl8169_close(struct net_device *dev) @@ -4653,12 +4654,9 @@ static int rtl8169_close(struct net_device *dev) /* Update counters before going down */ rtl8169_update_counters(tp); - rtl_lock_work(tp); - /* Clear all task flags */ - bitmap_zero(tp->wk.flags, RTL_FLAG_MAX); - - rtl8169_down(dev); - rtl_unlock_work(tp); + netif_stop_queue(dev); + rtl8169_down(tp); + rtl8169_rx_clear(tp); cancel_work_sync(&tp->wk.work); @@ -4817,17 +4815,8 @@ static void rtl8169_net_suspend(struct rtl8169_private *tp) if (!netif_running(tp->dev)) return; - phy_stop(tp->phydev); netif_device_detach(tp->dev); - - rtl_lock_work(tp); - napi_disable(&tp->napi); - /* Clear all task flags */ - bitmap_zero(tp->wk.flags, RTL_FLAG_MAX); - - rtl_unlock_work(tp); - - rtl_pll_power_down(tp); + rtl8169_down(tp); } #ifdef CONFIG_PM From 67ee63ef2b15fcb0cb692010083592672d18f0a8 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Sat, 30 May 2020 23:59:58 +0200 Subject: [PATCH 6/6] r8169: improve handling power management ops Simplify handling the power management callbacks. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 28 ++++++++--------------- 1 file changed, 9 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index fd93377f961fc..4d2ec9742cee6 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4821,7 +4821,7 @@ static void rtl8169_net_suspend(struct rtl8169_private *tp) #ifdef CONFIG_PM -static int rtl8169_suspend(struct device *device) +static int __maybe_unused rtl8169_suspend(struct device *device) { struct rtl8169_private *tp = dev_get_drvdata(device); @@ -4847,7 +4847,7 @@ static void __rtl8169_resume(struct rtl8169_private *tp) rtl_unlock_work(tp); } -static int rtl8169_resume(struct device *device) +static int __maybe_unused rtl8169_resume(struct device *device) { struct rtl8169_private *tp = dev_get_drvdata(device); @@ -4909,24 +4909,12 @@ static int rtl8169_runtime_idle(struct device *device) } static const struct dev_pm_ops rtl8169_pm_ops = { - .suspend = rtl8169_suspend, - .resume = rtl8169_resume, - .freeze = rtl8169_suspend, - .thaw = rtl8169_resume, - .poweroff = rtl8169_suspend, - .restore = rtl8169_resume, - .runtime_suspend = rtl8169_runtime_suspend, - .runtime_resume = rtl8169_runtime_resume, - .runtime_idle = rtl8169_runtime_idle, + SET_SYSTEM_SLEEP_PM_OPS(rtl8169_suspend, rtl8169_resume) + SET_RUNTIME_PM_OPS(rtl8169_runtime_suspend, rtl8169_runtime_resume, + rtl8169_runtime_idle) }; -#define RTL8169_PM_OPS (&rtl8169_pm_ops) - -#else /* !CONFIG_PM */ - -#define RTL8169_PM_OPS NULL - -#endif /* !CONFIG_PM */ +#endif /* CONFIG_PM */ static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp) { @@ -5458,7 +5446,9 @@ static struct pci_driver rtl8169_pci_driver = { .probe = rtl_init_one, .remove = rtl_remove_one, .shutdown = rtl_shutdown, - .driver.pm = RTL8169_PM_OPS, +#ifdef CONFIG_PM + .driver.pm = &rtl8169_pm_ops, +#endif }; module_pci_driver(rtl8169_pci_driver);