-void mbx_i8259_action(int cpl, void *dev_id, struct pt_regs *regs)
-{
- int bits, irq;
-
- /* A bug in the QSpan chip causes it to give us 0xff always
- * when doing a character read. So read 32 bits and shift.
- * This doesn't seem to return useful values anyway, but
- * read it to make sure things are acked.
- * -- Cort
- */
- irq = (inl(0x508) >> 24)&0xff;
- if ( irq != 0xff ) printk("iack %d\n", irq);
-
- outb(0x0C, 0x20);
- irq = inb(0x20) & 7;
- if (irq == 2)
- {
- outb(0x0C, 0xA0);
- irq = inb(0xA0);
- irq = (irq&7) + 8;
- }
- bits = 1UL << irq;
- irq += i8259_pic.irq_offset;
- ppc_irq_dispatch_handler( regs, irq );
-}
-#endif
-