+static void ar71xx_pci_irq_handler(unsigned int irq, struct irq_desc *desc)
+{
+ void __iomem *base = ar71xx_reset_base;
+ u32 pending;
+
+ pending = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_STATUS) &
+ __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+
+ if (pending & PCI_INT_DEV0)
+ generic_handle_irq(AR71XX_PCI_IRQ_DEV0);
+
+ else if (pending & PCI_INT_DEV1)
+ generic_handle_irq(AR71XX_PCI_IRQ_DEV1);
+
+ else if (pending & PCI_INT_DEV2)
+ generic_handle_irq(AR71XX_PCI_IRQ_DEV2);
+
+ else if (pending & PCI_INT_CORE)
+ generic_handle_irq(AR71XX_PCI_IRQ_CORE);
+
+ else
+ spurious_interrupt();
+}
+
+static void ar71xx_pci_irq_unmask(unsigned int irq)
+{
+ void __iomem *base = ar71xx_reset_base;
+ u32 t;
+
+ irq -= AR71XX_PCI_IRQ_BASE;
+
+ t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+ __raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+
+ /* flush write */
+ (void) __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+}
+
+static void ar71xx_pci_irq_mask(unsigned int irq)
+{
+ void __iomem *base = ar71xx_reset_base;
+ u32 t;
+
+ irq -= AR71XX_PCI_IRQ_BASE;
+
+ t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+ __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+
+ /* flush write */
+ (void) __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+}
+
+static struct irq_chip ar71xx_pci_irq_chip = {
+ .name = "AR71XX PCI ",
+ .mask = ar71xx_pci_irq_mask,
+ .unmask = ar71xx_pci_irq_unmask,
+ .mask_ack = ar71xx_pci_irq_mask,
+};
+
+static void __init ar71xx_pci_irq_init(void)
+{
+ void __iomem *base = ar71xx_reset_base;
+ int i;
+
+ __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_ENABLE);
+ __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_STATUS);
+
+ for (i = AR71XX_PCI_IRQ_BASE;
+ i < AR71XX_PCI_IRQ_BASE + AR71XX_PCI_IRQ_COUNT; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ set_irq_chip_and_handler(i, &ar71xx_pci_irq_chip,
+ handle_level_irq);
+ }
+
+ set_irq_chained_handler(AR71XX_CPU_IRQ_IP2, ar71xx_pci_irq_handler);
+}
+