-extern void* OpenPIC_Addr;
-extern void* OpenPIC2_Addr;
-extern u_int OpenPIC_NumInitSenses;
-extern u_char *OpenPIC_InitSenses;
-extern void openpic_init(int main_pic, int offset, unsigned char* chrp_ack,
- int programmer_switch_irq);
-extern void openpic2_init(int offset);
-extern int openpic_get_irq(struct pt_regs *regs);
-extern int openpic2_get_irq(struct pt_regs *regs);
-
-static int pmac_cascade_irq = -1;
-
-static irqreturn_t pmac_u3_do_cascade(int cpl, void *dev_id, struct pt_regs *regs)