int toshiba_rbtx4927_irq_nested(int sw_irq)
{
u32 level3;
u32 level4;
u32 level5;
level3 = reg_rd08(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f;
if (level3) {
sw_irq = TOSHIBA_RBTX4927_IRQ_IOC_BEG + bit2num(level3);
if (sw_irq != TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC) {
goto RETURN;
}
}
#ifdef CONFIG_TOSHIBA_FPCIB0
{
if (tx4927_using_backplane) {
outb(0x0A, 0x20);
level4 = inb(0x20) & 0xff;
if (level4) {
sw_irq =
TOSHIBA_RBTX4927_IRQ_ISA_BEG +
bit2num(level4);
if (sw_irq !=
TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_ISA) {
goto RETURN;
}
}
outb(0x0A, 0xA0);
level5 = inb(0xA0) & 0xff;
if (level5) {
sw_irq =
TOSHIBA_RBTX4927_IRQ_ISA_MID +
bit2num(level5);
goto RETURN;
}
}
}
#endif
RETURN:
return (sw_irq);
}
int toshiba_rbtx4927_irq_nested(int sw_irq)
{
u32 level3;
level3 = readb(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f;
if (level3) {
sw_irq = TOSHIBA_RBTX4927_IRQ_IOC_BEG + bit2num(level3);
if (sw_irq != TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC) {
goto RETURN;
}
}
#ifdef CONFIG_TOSHIBA_FPCIB0
if (tx4927_using_backplane) {
int irq = i8259_irq();
if (irq >= 0)
sw_irq = irq;
}
#endif
RETURN:
return (sw_irq);
}
