net: libwx: Add irq flow functions

Add irq flow functions for ngbe and txgbe.
Alloc pcie msix irqs for drivers, otherwise fall back to msi/legacy.

Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Mengyuan Lou

drivers/net/ethernet/wangxun/libwx/Makefile

@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_LIBWX) += libwx.o
 
-libwx-objs := wx_hw.o
+libwx-objs := wx_hw.o wx_lib.o

drivers/net/ethernet/wangxun/libwx/wx_hw.c

@@ -14,7 +14,7 @@ static void wx_intr_disable(struct wx *wx, u64 qmask)
 {
 	u32 mask;
 
-	mask = (qmask & 0xFFFFFFFF);
+	mask = (qmask & U32_MAX);
 	if (mask)
 		wr32(wx, WX_PX_IMS(0), mask);
 
@@ -25,6 +25,45 @@ static void wx_intr_disable(struct wx *wx, u64 qmask)
 	}
 }
 
+void wx_intr_enable(struct wx *wx, u64 qmask)
+{
+	u32 mask;
+
+	mask = (qmask & U32_MAX);
+	if (mask)
+		wr32(wx, WX_PX_IMC(0), mask);
+	if (wx->mac.type == wx_mac_sp) {
+		mask = (qmask >> 32);
+		if (mask)
+			wr32(wx, WX_PX_IMC(1), mask);
+	}
+}
+EXPORT_SYMBOL(wx_intr_enable);
+
+/**
+ * wx_irq_disable - Mask off interrupt generation on the NIC
+ * @wx: board private structure
+ **/
+void wx_irq_disable(struct wx *wx)
+{
+	struct pci_dev *pdev = wx->pdev;
+
+	wr32(wx, WX_PX_MISC_IEN, 0);
+	wx_intr_disable(wx, WX_INTR_ALL);
+
+	if (pdev->msix_enabled) {
+		int vector;
+
+		for (vector = 0; vector < wx->num_q_vectors; vector++)
+			synchronize_irq(wx->msix_entries[vector].vector);
+
+		synchronize_irq(wx->msix_entries[vector].vector);
+	} else {
+		synchronize_irq(pdev->irq);
+	}
+}
+EXPORT_SYMBOL(wx_irq_disable);
+
 /* cmd_addr is used for some special command:
  * 1. to be sector address, when implemented erase sector command
  * 2. to be flash address when implemented read, write flash address
@@ -844,6 +883,20 @@ void wx_disable_rx(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_disable_rx);
 
+static void wx_configure_isb(struct wx *wx)
+{
+	/* set ISB Address */
+	wr32(wx, WX_PX_ISB_ADDR_L, wx->isb_dma & DMA_BIT_MASK(32));
+	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
+		wr32(wx, WX_PX_ISB_ADDR_H, upper_32_bits(wx->isb_dma));
+}
+
+void wx_configure(struct wx *wx)
+{
+	wx_configure_isb(wx);
+}
+EXPORT_SYMBOL(wx_configure);
+
 /**
  *  wx_disable_pcie_master - Disable PCI-express master access
  *  @wx: pointer to hardware structure

drivers/net/ethernet/wangxun/libwx/wx_hw.h

@@ -4,6 +4,8 @@
 #ifndef _WX_HW_H_
 #define _WX_HW_H_
 
+void wx_intr_enable(struct wx *wx, u64 qmask);
+void wx_irq_disable(struct wx *wx);
 int wx_check_flash_load(struct wx *wx, u32 check_bit);
 void wx_control_hw(struct wx *wx, bool drv);
 int wx_mng_present(struct wx *wx);
@@ -20,6 +22,7 @@ void wx_mac_set_default_filter(struct wx *wx, u8 *addr);
 void wx_flush_sw_mac_table(struct wx *wx);
 int wx_set_mac(struct net_device *netdev, void *p);
 void wx_disable_rx(struct wx *wx);
+void wx_configure(struct wx *wx);
 int wx_disable_pcie_master(struct wx *wx);
 int wx_stop_adapter(struct wx *wx);
 void wx_reset_misc(struct wx *wx);