atheros: USB support

[openwrt/svn-archive/archive.git] / target / linux / atheros / files / arch / mips / atheros / ar5315 / irq.c

diff --git a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
index 69cb362a00dde281b8e98dc4c6b9b617ad10b2f1..581b1a4a10187244ff08bae8202d94de46d988dc 100644 (file)
--- a/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
+++ b/target/linux/atheros/files/arch/mips/atheros/ar5315/irq.c
@@ -60,6 +60,10 @@ asmlinkage void ar5315_irq_dispatch(void)
                do_IRQ(AR5315_IRQ_WLAN0_INTRS);
        else if (pending & CAUSEF_IP4)
                do_IRQ(AR5315_IRQ_ENET0_INTRS);
+#ifdef CONFIG_PCI
+       else if (pending & CAUSEF_IP5)
+               ar5315_pci_irq(AR5315_IRQ_LCBUS_PCI);
+#endif
        else if (pending & CAUSEF_IP2) {
                unsigned int ar531x_misc_intrs = sysRegRead(AR5315_ISR) & sysRegRead(AR5315_IMR);
 
@@ -81,6 +85,30 @@ asmlinkage void ar5315_irq_dispatch(void)
                do_IRQ(AR531X_IRQ_CPU_CLOCK);
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_abort_irq(void)
+{
+       sysRegWrite(AR5315_PCI_INT_STATUS, AR5315_PCI_ABORT_INT);
+       (void)sysRegRead(AR5315_PCI_INT_STATUS); /* flush write to hardware */
+}
+
+static inline void pci_ack_irq(void)
+{
+       sysRegWrite(AR5315_PCI_INT_STATUS, AR5315_PCI_EXT_INT);
+       (void)sysRegRead(AR5315_PCI_INT_STATUS); /* flush write to hardware */
+}
+
+void ar5315_pci_irq(int irq)
+{
+       if (sysRegRead(AR5315_PCI_INT_STATUS) == AR5315_PCI_ABORT_INT)
+               pci_abort_irq();
+       else {
+               do_IRQ(irq);
+               pci_ack_irq();
+       }
+}
+#endif
+
 static void ar5315_gpio_intr_enable(unsigned int irq)
 {
        u32 gpio, mask;