1 files changed, 54 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/pirq_routing.h b/src/arch/x86/include/arch/pirq_routing.h
new file mode 100644
index 0000000000..0b65eac29b
--- /dev/null
+++ b/src/arch/x86/include/arch/pirq_routing.h
@@ -0,0 +1,54 @@
+#ifndef ARCH_PIRQ_ROUTING_H
+#define ARCH_PIRQ_ROUTING_H
+
+#if CONFIG_GENERATE_PIRQ_TABLE==1
+#include <stdint.h>
+
+#define PIRQ_SIGNATURE	(('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
+#define PIRQ_VERSION 0x0100
+
+struct irq_info {
+	u8 bus, devfn;	    /* Bus, device and function */
+	struct {
+		u8 link;    /* IRQ line ID, chipset dependent, 0=not routed */
+		u16 bitmap; /* Available IRQs */
+	} __attribute__((packed)) irq[4];
+	u8 slot;	    /* Slot number, 0=onboard */
+	u8 rfu;
+} __attribute__((packed));
+
+#ifndef CONFIG_IRQ_SLOT_COUNT
+#warning "IRQ_SLOT_COUNT is not defined in Kconfig. PIRQ won't work correctly."
+#endif
+
+struct irq_routing_table {
+	u32 signature;		/* PIRQ_SIGNATURE should be here */
+	u16 version;		/* PIRQ_VERSION */
+	u16 size;		/* Table size in bytes */
+	u8  rtr_bus, rtr_devfn;	/* Where the interrupt router lies */
+	u16 exclusive_irqs;	/* IRQs devoted exclusively to PCI usage */
+	u16 rtr_vendor, rtr_device;/* Vendor/device ID of interrupt router */
+	u32 miniport_data;
+	u8  rfu[11];
+	u8  checksum;		/* Modulo 256 checksum must give zero */
+	struct irq_info slots[CONFIG_IRQ_SLOT_COUNT];
+} __attribute__((packed));
+
+extern const struct irq_routing_table intel_irq_routing_table;
+
+unsigned long copy_pirq_routing_table(unsigned long start);
+unsigned long write_pirq_routing_table(unsigned long start);
+
+#if CONFIG_PIRQ_ROUTE==1
+void pirq_routing_irqs(unsigned long start);
+void pirq_assign_irqs(const unsigned char pIntAtoD[4]);
+#else
+#define pirq_routing_irqs(start) {}
+#endif
+
+#else
+#define copy_pirq_routing_table(start) (start)
+#define write_pirq_routing_table(start) (start)
+#endif
+
+#endif /* ARCH_PIRQ_ROUTING_H */