#define PCI_CFG_PIIX4_PIRQRCB 0x61
#define PCI_CFG_PIIX4_PIRQRCC 0x62
#define PCI_CFG_PIIX4_PIRQRCD 0x63
+#define PCI_CFG_PIIX4_SERIRQC 0x64
+#define PCI_CFG_PIIX4_GENCFG 0xb0
+
+#define PCI_CFG_PIIX4_SERIRQC_EN (1 << 7)
+#define PCI_CFG_PIIX4_SERIRQC_CONT (1 << 6)
+
+#define PCI_CFG_PIIX4_GENCFG_SERIRQ (1 << 16)
#endif /* _MIPS_ASM_MALTA_H */