Messages in this thread | | | Date | Thu, 11 Sep 2014 11:53:03 +0300 | From | Mika Westerberg <> | Subject | Re: Ask help about pre_init_apic_IRQ0() |
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On Thu, Sep 11, 2014 at 04:44:54PM +0800, Jiang Liu wrote: > Hi Thomas, > > When converting IOAPIC to hierarchy irqdomain, I ran into trouble when > dealing with pre_init_apic_IRQ0(). Currently pre_init_apic_IRQ0() is > only used by intel-mid platform and is called before initializing of > IOAPIC irqdomains. That really causes headache when converting to > hierarchy irqdomain. So could we delay > io_apic_setup_irq_pin(0, 0, &attr); > irq_set_chip_and_handler_name(0, &ioapic_chip, handle_edge_irq, > "edge"); > to the point of "check_timer()"? > > I have no MID hardware at handle so can't experiment with it. Could > you please refer someone for help?
Andy (Cc'd) has some MID boards that he uses almost daily basis. Andy can you help Jiang here?
> > /* Enable IOAPIC early just for system timer */ > void __init pre_init_apic_IRQ0(void) > { > struct io_apic_irq_attr attr = { 0, 0, 0, 0 }; > > printk(KERN_INFO "Early APIC setup for system timer0\n"); > #ifndef CONFIG_SMP > physid_set_mask_of_physid(boot_cpu_physical_apicid, > &phys_cpu_present_map); > #endif > setup_local_APIC(); > > io_apic_setup_irq_pin(0, 0, &attr); > irq_set_chip_and_handler_name(0, &ioapic_chip, handle_edge_irq, > "edge"); > } > > Regards! > Gerry
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