[PATCH net-next v3 6/6] net: txgbe: add sriov function support

@@ -1004,3 +1004,50 @@ void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up)
 		wx_write_mbx_pf(wx, msgbuf, 2, i);
 }
 EXPORT_SYMBOL(wx_ping_all_vfs_with_link_status);
+
+/**
+ * wx_set_vf_link_state - Set link state
+ * @wx: Pointer to adapter struct
+ * @vf: VF identifier
+ * @state: required link state
+ *
+ * Set a link force state on/off a single vf
+ **/
+static void wx_set_vf_link_state(struct wx *wx, int vf, int state)
+{
+	wx->vfinfo[vf].link_state = state;
+	switch (state) {
+	case IFLA_VF_LINK_STATE_AUTO:
+		if (netif_running(wx->netdev))
+			wx->vfinfo[vf].link_enable = true;
+		else
+			wx->vfinfo[vf].link_enable = false;
+		break;
+	case IFLA_VF_LINK_STATE_ENABLE:
+		wx->vfinfo[vf].link_enable = true;
+		break;
+	case IFLA_VF_LINK_STATE_DISABLE:
+		wx->vfinfo[vf].link_enable = false;
+		break;
+	}
+	/* restart the VF */
+	wx->vfinfo[vf].clear_to_send = false;
+	wx_ping_vf(wx, vf);
+
+	wx_set_vf_rx_tx(wx, vf);
+}
+
+/**
+ * wx_set_all_vfs - update vfs queues
+ * @wx: Pointer to wx struct
+ *
+ * Update setting transmit and receive queues for all vfs
+ **/
+void wx_set_all_vfs(struct wx *wx)
+{
+	int i;
+
+	for (i = 0 ; i < wx->num_vfs; i++)
+		wx_set_vf_link_state(wx, i, wx->vfinfo[i].link_state);
+}
+EXPORT_SYMBOL(wx_set_all_vfs);

@@ -9,5 +9,6 @@ int wx_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);
 void wx_msg_task(struct wx *wx);
 void wx_disable_vf_rx_tx(struct wx *wx);
 void wx_ping_all_vfs_with_link_status(struct wx *wx, bool link_up);
+void wx_set_all_vfs(struct wx *wx);
 
 #endif /* _WX_SRIOV_H_ */

@@ -1048,6 +1048,7 @@ struct vf_data_storage {
 	u16 vf_mc_hashes[WX_MAX_VF_MC_ENTRIES];
 	u16 num_vf_mc_hashes;
 	u16 vlan_count;
+	int link_state;
 };
 
 struct vf_macvlans {

@@ -7,6 +7,7 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_phy.h"
 #include "txgbe_irq.h"

@@ -176,6 +177,24 @@ static const struct irq_domain_ops txgbe_misc_irq_domain_ops = {
 	.map = txgbe_misc_irq_domain_map,
 };
 
+static irqreturn_t txgbe_irq_handler(int irq, void *data)
+{
+	struct txgbe *txgbe = data;
+	struct wx *wx = txgbe->wx;
+	u32 eicr;
+
+	eicr = wx_misc_isb(wx, WX_ISB_MISC) & TXGBE_PX_MISC_IEN_MASK;
+	if (!eicr)
+		return IRQ_NONE;
+	txgbe->eicr = eicr;
+	if (eicr & TXGBE_PX_MISC_IC_VF_MBOX) {
+		wx_msg_task(txgbe->wx);
+		wx_intr_enable(wx, TXGBE_INTR_MISC);
+	}
+
+	return IRQ_WAKE_THREAD;
+}
+
 static irqreturn_t txgbe_misc_irq_handle(int irq, void *data)
 {
 	struct txgbe *txgbe = data;

@@ -184,7 +203,7 @@ static irqreturn_t txgbe_misc_irq_handle(int irq, void *data)
 	unsigned int sub_irq;
 	u32 eicr;
 
-	eicr = wx_misc_isb(wx, WX_ISB_MISC);
+	eicr = txgbe->eicr;
 	if (eicr & TXGBE_PX_MISC_GPIO) {
 		sub_irq = irq_find_mapping(txgbe->misc.domain, TXGBE_IRQ_GPIO);
 		handle_nested_irq(sub_irq);

@@ -226,7 +245,7 @@ int txgbe_setup_misc_irq(struct txgbe *txgbe)
 	struct wx *wx = txgbe->wx;
 	int hwirq, err;
 
-	txgbe->misc.nirqs = 2;
+	txgbe->misc.nirqs = TXGBE_IRQ_MAX;
 	txgbe->misc.domain = irq_domain_add_simple(NULL, txgbe->misc.nirqs, 0,
 						   &txgbe_misc_irq_domain_ops, txgbe);
 	if (!txgbe->misc.domain)

@@ -241,7 +260,7 @@ int txgbe_setup_misc_irq(struct txgbe *txgbe)
 	else
 		txgbe->misc.irq = wx->pdev->irq;
 
-	err = request_threaded_irq(txgbe->misc.irq, NULL,
+	err = request_threaded_irq(txgbe->misc.irq, txgbe_irq_handler,
 				   txgbe_misc_irq_handle,
 				   IRQF_ONESHOT,
 				   wx->netdev->name, txgbe);

@@ -14,6 +14,8 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_mbx.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_hw.h"
 #include "txgbe_phy.h"

@@ -99,6 +101,12 @@ static void txgbe_up_complete(struct wx *wx)
 
 	/* enable transmits */
 	netif_tx_start_all_queues(netdev);
+
+	/* Set PF Reset Done bit so PF/VF Mail Ops can work */
+	wr32m(wx, WX_CFG_PORT_CTL, WX_CFG_PORT_CTL_PFRSTD,
+	      WX_CFG_PORT_CTL_PFRSTD);
+	/* update setting rx tx for all active vfs */
+	wx_set_all_vfs(wx);
 }
 
 static void txgbe_reset(struct wx *wx)

@@ -144,6 +152,16 @@ static void txgbe_disable_device(struct wx *wx)
 		wx_err(wx, "%s: invalid bus lan id %d\n",
 		       __func__, wx->bus.func);
 
+	if (wx->num_vfs) {
+		/* Clear EITR Select mapping */
+		wr32(wx, WX_PX_ITRSEL, 0);
+		/* Mark all the VFs as inactive */
+		for (i = 0 ; i < wx->num_vfs; i++)
+			wx->vfinfo[i].clear_to_send = 0;
+		/* update setting rx tx for all active vfs */
+		wx_set_all_vfs(wx);
+	}
+
 	if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
 	      ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
 		/* disable mac transmiter */

@@ -269,6 +287,10 @@ static int txgbe_sw_init(struct wx *wx)
 	wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
 	wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
 
+	wx->mbx.size = WX_VXMAILBOX_SIZE;
+	wx->setup_tc = txgbe_setup_tc;
+	set_bit(0, &wx->fwd_bitmask);
+
 	return 0;
 }
 

@@ -694,6 +716,7 @@ static void txgbe_remove(struct pci_dev *pdev)
 	struct net_device *netdev;
 
 	netdev = wx->netdev;
+	wx_disable_sriov(wx);
 	unregister_netdev(netdev);
 
 	txgbe_remove_phy(txgbe);

@@ -715,6 +738,7 @@ static struct pci_driver txgbe_driver = {
 	.probe    = txgbe_probe,
 	.remove   = txgbe_remove,
 	.shutdown = txgbe_shutdown,
+	.sriov_configure = wx_pci_sriov_configure,
 };
 
 module_pci_driver(txgbe_driver);

@@ -16,6 +16,7 @@
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_sriov.h"
 #include "txgbe_type.h"
 #include "txgbe_phy.h"
 #include "txgbe_hw.h"

@@ -179,6 +180,9 @@ static void txgbe_mac_link_down(struct phylink_config *config,
 	struct wx *wx = phylink_to_wx(config);
 
 	wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+	wx->speed = 0;
+	/* ping all the active vfs to let them know we are going down */
+	wx_ping_all_vfs_with_link_status(wx, false);
 }
 
 static void txgbe_mac_link_up(struct phylink_config *config,

@@ -215,6 +219,10 @@ static void txgbe_mac_link_up(struct phylink_config *config,
 	wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
 	wdg = rd32(wx, WX_MAC_WDG_TIMEOUT);
 	wr32(wx, WX_MAC_WDG_TIMEOUT, wdg);
+
+	wx->speed = speed;
+	/* ping all the active vfs to let them know we are going up */
+	wx_ping_all_vfs_with_link_status(wx, true);
 }
 
 static int txgbe_mac_prepare(struct phylink_config *config, unsigned int mode,

@@ -71,12 +71,13 @@
 #define TXGBE_PX_MISC_ETH_LK                    BIT(18)
 #define TXGBE_PX_MISC_ETH_AN                    BIT(19)
 #define TXGBE_PX_MISC_INT_ERR                   BIT(20)
+#define TXGBE_PX_MISC_IC_VF_MBOX                BIT(23)
 #define TXGBE_PX_MISC_GPIO                      BIT(26)
 #define TXGBE_PX_MISC_IEN_MASK                            \
 	(TXGBE_PX_MISC_ETH_LKDN | TXGBE_PX_MISC_DEV_RST | \
 	 TXGBE_PX_MISC_ETH_EVENT | TXGBE_PX_MISC_ETH_LK | \
 	 TXGBE_PX_MISC_ETH_AN | TXGBE_PX_MISC_INT_ERR |   \
-	 TXGBE_PX_MISC_GPIO)
+	 TXGBE_PX_MISC_IC_VF_MBOX | TXGBE_PX_MISC_GPIO)
 
 /* Port cfg registers */
 #define TXGBE_CFG_PORT_ST                       0x14404

@@ -195,6 +196,7 @@ struct txgbe {
 	struct gpio_chip *gpio;
 	unsigned int gpio_irq;
 	unsigned int link_irq;
+	u32 eicr;
 };
 
 #endif /* _TXGBE_TYPE_H_ */