000-enable-alx-wol-4.9.patch

diff -u drivers/net/ethernet/atheros/alx/ethtool.c drivers/net/ethernet/atheros/alx/ethtool.c
--- drivers/net/ethernet/atheros/alx/ethtool.c	2016-12-11 20:17:54.000000000 +0100
+++ drivers/net/ethernet/atheros/alx/ethtool.c	2016-12-13 13:36:36.464047098 +0100
@@ -299,6 +299,40 @@
 	}
 }
 
+static void alx_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+	struct alx_priv *alx = netdev_priv(netdev);
+	struct alx_hw *hw = &alx->hw;
+
+	wol->supported = WAKE_MAGIC | WAKE_PHY;
+	wol->wolopts = 0;
+
+	if (hw->sleep_ctrl & ALX_SLEEP_WOL_MAGIC)
+		wol->wolopts |= WAKE_MAGIC;
+	if (hw->sleep_ctrl & ALX_SLEEP_WOL_PHY)
+		wol->wolopts |= WAKE_PHY;
+}
+
+static int alx_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+	struct alx_priv *alx = netdev_priv(netdev);
+	struct alx_hw *hw = &alx->hw;
+
+	if (wol->wolopts & ~(WAKE_MAGIC | WAKE_PHY))
+		return -EOPNOTSUPP;
+
+	hw->sleep_ctrl = 0;
+
+	if (wol->wolopts & WAKE_MAGIC)
+		hw->sleep_ctrl |= ALX_SLEEP_WOL_MAGIC;
+	if (wol->wolopts & WAKE_PHY)
+		hw->sleep_ctrl |= ALX_SLEEP_WOL_PHY;
+
+	device_set_wakeup_enable(&alx->hw.pdev->dev, hw->sleep_ctrl);
+
+	return 0;
+}
+
 const struct ethtool_ops alx_ethtool_ops = {
 	.get_settings	= alx_get_settings,
 	.set_settings	= alx_set_settings,
@@ -306,6 +340,8 @@
 	.set_pauseparam	= alx_set_pauseparam,
 	.get_msglevel	= alx_get_msglevel,
 	.set_msglevel	= alx_set_msglevel,
+	.get_wol	= alx_get_wol,
+	.set_wol	= alx_set_wol,
 	.get_link	= ethtool_op_get_link,
 	.get_strings	= alx_get_strings,
 	.get_sset_count	= alx_get_sset_count,
diff -u drivers/net/ethernet/atheros/alx/hw.c drivers/net/ethernet/atheros/alx/hw.c
--- drivers/net/ethernet/atheros/alx/hw.c	2016-12-11 20:17:54.000000000 +0100
+++ drivers/net/ethernet/atheros/alx/hw.c	2016-12-13 13:36:36.464047098 +0100
@@ -332,6 +332,16 @@
 	alx_write_mem32(hw, ALX_STAD1, val);
 }
 
+static void alx_enable_osc(struct alx_hw *hw)
+{
+	u32 val;
+
+	/* rising edge */
+	val = alx_read_mem32(hw, ALX_MISC);
+	alx_write_mem32(hw, ALX_MISC, val & ~ALX_MISC_INTNLOSC_OPEN);
+	alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN);
+}
+
 static void alx_reset_osc(struct alx_hw *hw, u8 rev)
 {
 	u32 val, val2;
@@ -848,6 +858,66 @@
 	}
 }
 
+
+/* NOTE:
+ *    1. phy link must be established before calling this function
+ *    2. wol option (pattern,magic,link,etc.) is configed before call it.
+ */
+int alx_pre_suspend(struct alx_hw *hw, int speed, u8 duplex)
+{
+	u32 master, mac, phy, val;
+	int err = 0;
+
+	master = alx_read_mem32(hw, ALX_MASTER);
+	master &= ~ALX_MASTER_PCLKSEL_SRDS;
+	mac = hw->rx_ctrl;
+	/* 10/100 half */
+	ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED,  ALX_MAC_CTRL_SPEED_10_100);
+	mac &= ~(ALX_MAC_CTRL_FULLD | ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_TX_EN);
+
+	phy = alx_read_mem32(hw, ALX_PHY_CTRL);
+	phy &= ~(ALX_PHY_CTRL_DSPRST_OUT | ALX_PHY_CTRL_CLS);
+	phy |= ALX_PHY_CTRL_RST_ANALOG | ALX_PHY_CTRL_HIB_PULSE |
+	       ALX_PHY_CTRL_HIB_EN;
+
+	/* without any activity  */
+	if (!(hw->sleep_ctrl & ALX_SLEEP_ACTIVE)) {
+		err = alx_write_phy_reg(hw, ALX_MII_IER, 0);
+		if (err)
+			return err;
+		phy |= ALX_PHY_CTRL_IDDQ | ALX_PHY_CTRL_POWER_DOWN;
+	} else {
+		if (hw->sleep_ctrl & (ALX_SLEEP_WOL_MAGIC | ALX_SLEEP_CIFS))
+			mac |= ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_BRD_EN;
+		if (hw->sleep_ctrl & ALX_SLEEP_CIFS)
+			mac |= ALX_MAC_CTRL_TX_EN;
+		if (duplex == DUPLEX_FULL)
+			mac |= ALX_MAC_CTRL_FULLD;
+		if (speed == SPEED_1000)
+			ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED,
+				      ALX_MAC_CTRL_SPEED_1000);
+		phy |= ALX_PHY_CTRL_DSPRST_OUT;
+		err = alx_write_phy_ext(hw, ALX_MIIEXT_ANEG,
+					ALX_MIIEXT_S3DIG10,
+					ALX_MIIEXT_S3DIG10_SL);
+		if (err)
+			return err;
+	}
+
+	alx_enable_osc(hw);
+	hw->rx_ctrl = mac;
+	alx_write_mem32(hw, ALX_MASTER, master);
+	alx_write_mem32(hw, ALX_MAC_CTRL, mac);
+	alx_write_mem32(hw, ALX_PHY_CTRL, phy);
+
+	/* set val of PDLL D3PLLOFF */
+	val = alx_read_mem32(hw, ALX_PDLL_TRNS1);
+	val |= ALX_PDLL_TRNS1_D3PLLOFF_EN;
+	alx_write_mem32(hw, ALX_PDLL_TRNS1, val);
+
+	return 0;
+}
+
 bool alx_phy_configured(struct alx_hw *hw)
 {
 	u32 cfg, hw_cfg;
@@ -920,6 +990,26 @@
 	return alx_read_phy_reg(hw, ALX_MII_ISR, &isr);
 }
 
+int alx_config_wol(struct alx_hw *hw)
+{
+	u32 wol = 0;
+	int err = 0;
+
+	/* turn on magic packet event */
+	if (hw->sleep_ctrl & ALX_SLEEP_WOL_MAGIC)
+		wol |= ALX_WOL0_MAGIC_EN | ALX_WOL0_PME_MAGIC_EN;
+
+	/* turn on link up event */
+	if (hw->sleep_ctrl & ALX_SLEEP_WOL_PHY) {
+		wol |=  ALX_WOL0_LINK_EN | ALX_WOL0_PME_LINK;
+		/* only link up can wake up */
+		err = alx_write_phy_reg(hw, ALX_MII_IER, ALX_IER_LINK_UP);
+	}
+	alx_write_mem32(hw, ALX_WOL0, wol);
+
+	return err;
+}
+
 void alx_disable_rss(struct alx_hw *hw)
 {
 	u32 ctrl = alx_read_mem32(hw, ALX_RXQ0);
@@ -1045,6 +1135,71 @@
 }
 
 
+int alx_select_powersaving_speed(struct alx_hw *hw, int *speed, u8 *duplex)
+{
+	int i, err;
+	u16 lpa;
+
+	err = alx_read_phy_link(hw);
+	if (err)
+		return err;
+
+	if (hw->link_speed == SPEED_UNKNOWN) {
+		*speed = SPEED_UNKNOWN;
+		*duplex = DUPLEX_UNKNOWN;
+		return 0;
+	}
+
+	err = alx_read_phy_reg(hw, MII_LPA, &lpa);
+	if (err)
+		return err;
+
+	if (!(lpa & LPA_LPACK)) {
+		*speed = hw->link_speed;
+		return 0;
+	}
+
+	if (lpa & LPA_10FULL) {
+		*speed = SPEED_10;
+		*duplex = DUPLEX_FULL;
+	} else if (lpa & LPA_10HALF) {
+		*speed = SPEED_10;
+		*duplex = DUPLEX_HALF;
+	} else if (lpa & LPA_100FULL) {
+		*speed = SPEED_100;
+		*duplex = DUPLEX_FULL;
+	} else {
+		*speed = SPEED_100;
+		*duplex = DUPLEX_HALF;
+	}
+
+	if (*speed == hw->link_speed && *duplex == hw->duplex)
+		return 0;
+	err = alx_write_phy_reg(hw, ALX_MII_IER, 0);
+	if (err)
+		return err;
+	err = alx_setup_speed_duplex(hw, alx_speed_to_ethadv(*speed, *duplex) |
+					 ADVERTISED_Autoneg, ALX_FC_ANEG |
+					 ALX_FC_RX | ALX_FC_TX);
+	if (err)
+		return err;
+
+	/* wait for linkup */
+	for (i = 0; i < ALX_MAX_SETUP_LNK_CYCLE; i++) {
+		msleep(100);
+
+		err = alx_read_phy_link(hw);
+		if (err < 0)
+			return err;
+		if (hw->link_speed != SPEED_UNKNOWN)
+			break;
+	}
+	if (i == ALX_MAX_SETUP_LNK_CYCLE)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
 bool alx_get_phy_info(struct alx_hw *hw)
 {
 	u16  devs1, devs2;
diff -u drivers/net/ethernet/atheros/alx/hw.h drivers/net/ethernet/atheros/alx/hw.h
--- drivers/net/ethernet/atheros/alx/hw.h	2016-12-11 20:17:54.000000000 +0100
+++ drivers/net/ethernet/atheros/alx/hw.h	2016-12-13 13:36:36.464047098 +0100
@@ -488,6 +488,8 @@
 	u8 flowctrl;
 	u32 adv_cfg;
 
+	u32 sleep_ctrl;
+
 	spinlock_t mdio_lock;
 	struct mdio_if_info mdio;
 	u16 phy_id[2];
@@ -550,12 +552,14 @@
 void alx_enable_aspm(struct alx_hw *hw, bool l0s_en, bool l1_en);
 int alx_setup_speed_duplex(struct alx_hw *hw, u32 ethadv, u8 flowctrl);
 void alx_post_phy_link(struct alx_hw *hw);
+int alx_pre_suspend(struct alx_hw *hw, int speed, u8 duplex);
 int alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data);
 int alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data);
 int alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata);
 int alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data);
 int alx_read_phy_link(struct alx_hw *hw);
 int alx_clear_phy_intr(struct alx_hw *hw);
+int alx_config_wol(struct alx_hw *hw);
 void alx_cfg_mac_flowcontrol(struct alx_hw *hw, u8 fc);
 void alx_start_mac(struct alx_hw *hw);
 int alx_reset_mac(struct alx_hw *hw);
@@ -564,6 +568,7 @@
 void alx_configure_basic(struct alx_hw *hw);
 void alx_mask_msix(struct alx_hw *hw, int index, bool mask);
 void alx_disable_rss(struct alx_hw *hw);
+int alx_select_powersaving_speed(struct alx_hw *hw, int *speed, u8 *duplex);
 bool alx_get_phy_info(struct alx_hw *hw);
 void alx_update_hw_stats(struct alx_hw *hw);
 
diff -u drivers/net/ethernet/atheros/alx/main.c drivers/net/ethernet/atheros/alx/main.c
--- drivers/net/ethernet/atheros/alx/main.c	2016-12-11 20:17:54.000000000 +0100
+++ drivers/net/ethernet/atheros/alx/main.c	2016-12-13 13:36:47.736407751 +0100
@@ -894,6 +894,7 @@
 	alx->rxbuf_size = ALX_MAX_FRAME_LEN(hw->mtu);
 	alx->tx_ringsz = 256;
 	alx->rx_ringsz = 512;
+  hw->sleep_ctrl = ALX_SLEEP_WOL_MAGIC | ALX_SLEEP_WOL_PHY;
 	hw->imt = 200;
 	alx->int_mask = ALX_ISR_MISC;
 	hw->dma_chnl = hw->max_dma_chnl;
@@ -1150,6 +1151,65 @@
 	__alx_stop(netdev_priv(netdev));
 	return 0;
 }
+static int __alx_shutdown(struct pci_dev *pdev, bool *wol_en)
+{
+	struct alx_priv *alx = pci_get_drvdata(pdev);
+	struct net_device *netdev = alx->dev;
+	struct alx_hw *hw = &alx->hw;
+	int err, speed;
+	u8 duplex;
+
+	netif_device_detach(netdev);
+
+	if (netif_running(netdev))
+		__alx_stop(alx);
+
+#ifdef CONFIG_PM_SLEEP
+	err = pci_save_state(pdev);
+	if (err)
+		return err;
+#endif
+
+	err = alx_select_powersaving_speed(hw, &speed, &duplex);
+	if (err)
+		return err;
+	err = alx_clear_phy_intr(hw);
+	if (err)
+		return err;
+	err = alx_pre_suspend(hw, speed, duplex);
+	if (err)
+		return err;
+	err = alx_config_wol(hw);
+	if (err)
+		return err;
+
+	*wol_en = false;
+	if (hw->sleep_ctrl & ALX_SLEEP_ACTIVE) {
+		netif_info(alx, wol, netdev,
+			   "wol: ctrl=%X, speed=%X\n",
+			   hw->sleep_ctrl, speed);
+		device_set_wakeup_enable(&pdev->dev, true);
+		*wol_en = true;
+	}
+
+	pci_disable_device(pdev);
+
+	return 0;
+}
+
+static void alx_shutdown(struct pci_dev *pdev)
+{
+	int err;
+	bool wol_en;
+
+	err = __alx_shutdown(pdev, &wol_en);
+	if (!err) {
+		pci_wake_from_d3(pdev, wol_en);
+		pci_set_power_state(pdev, PCI_D3hot);
+	} else {
+		dev_err(&pdev->dev, "shutdown fail %d\n", err);
+	}
+}
 
 static void alx_link_check(struct work_struct *work)
 {
@@ -1637,6 +1697,8 @@
 		goto out_unmap;
 	}
 
+	device_set_wakeup_enable(&pdev->dev, hw->sleep_ctrl);
+
 	netdev_info(netdev,
 		    "Qualcomm Atheros AR816x/AR817x Ethernet [%pM]\n",
 		    netdev->dev_addr);
@@ -1679,12 +1741,21 @@
 static int alx_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
-	struct alx_priv *alx = pci_get_drvdata(pdev);
+	int err;
+	bool wol_en;
 
-	if (!netif_running(alx->dev))
-		return 0;
-	netif_device_detach(alx->dev);
-	__alx_stop(alx);
+	err = __alx_shutdown(pdev, &wol_en);
+	if (err) {
+		dev_err(&pdev->dev, "shutdown fail in suspend %d\n", err);
+		return err;
+	}
+
+	if (wol_en) {
+		pci_prepare_to_sleep(pdev);
+	} else {
+		pci_wake_from_d3(pdev, false);
+		pci_set_power_state(pdev, PCI_D3hot);
+	}
 	return 0;
 }
 
@@ -1692,20 +1763,47 @@
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct alx_priv *alx = pci_get_drvdata(pdev);
-	struct alx_hw *hw = &alx->hw;
-
-	alx_reset_phy(hw);
+  struct net_device *netdev = alx->dev;
+  struct alx_hw *hw = &alx->hw;
+  int err;
+
+  pci_set_power_state(pdev, PCI_D0);
+  pci_restore_state(pdev);
+  pci_save_state(pdev);
+
+  pci_enable_wake(pdev, PCI_D3hot, 0);
+  pci_enable_wake(pdev, PCI_D3cold, 0);
+
+  hw->link_speed = SPEED_UNKNOWN;
+  alx->int_mask = ALX_ISR_MISC;
+
+  alx_reset_pcie(hw);
+  alx_reset_phy(hw);
+
+  err = alx_reset_mac(hw);
+  if (err) {
+         netif_err(alx, hw, alx->dev,
+                   "resume:reset_mac fail %d\n", err);
+         return -EIO;
+  }
+
+  err = alx_setup_speed_duplex(hw, hw->adv_cfg, hw->flowctrl);
+  if (err) {
+         netif_err(alx, hw, alx->dev,
+                   "resume:setup_speed_duplex fail %d\n", err);
+         return -EIO;
+  }
+
+  if (netif_running(netdev)) {
+         err = __alx_open(alx, true);
+         if (err)
+                 return err;
+  }
 
-	if (!netif_running(alx->dev))
-		return 0;
-	netif_device_attach(alx->dev);
-	return __alx_open(alx, true);
+  netif_device_attach(netdev);
+	return err;
 }
 
-static SIMPLE_DEV_PM_OPS(alx_pm_ops, alx_suspend, alx_resume);
-#define ALX_PM_OPS      (&alx_pm_ops)
-#else
-#define ALX_PM_OPS      NULL
 #endif
 
 
@@ -1751,6 +1849,8 @@
 	}
 
 	pci_set_master(pdev);
+	pci_enable_wake(pdev, PCI_D3hot, 0);
+	pci_enable_wake(pdev, PCI_D3cold, 0);
 
 	alx_reset_pcie(hw);
 	if (!alx_reset_mac(hw))
@@ -1802,11 +1902,19 @@
 	{}
 };
 
+#ifdef CONFIG_PM_SLEEP
+static SIMPLE_DEV_PM_OPS(alx_pm_ops, alx_suspend, alx_resume);
+#define ALX_PM_OPS      (&alx_pm_ops)
+#else
+#define ALX_PM_OPS      NULL
+#endif
+
 static struct pci_driver alx_driver = {
 	.name        = alx_drv_name,
 	.id_table    = alx_pci_tbl,
 	.probe       = alx_probe,
 	.remove      = alx_remove,
+	.shutdown    = alx_shutdown,
 	.err_handler = &alx_err_handlers,
 	.driver.pm   = ALX_PM_OPS,
 };