67 #define	for_each_ioapic(idx)		\  argument
68 	for ((idx) = 0; (idx) < nr_ioapics; (idx)++)
69 #define	for_each_ioapic_reverse(idx)	\  argument
70 	for ((idx) = nr_ioapics - 1; (idx) >= 0; (idx)--)
71 #define	for_each_pin(idx, pin)		\  argument
72 	for ((pin) = 0; (pin) < ioapics[(idx)].nr_registers; (pin)++)
73 #define	for_each_ioapic_pin(idx, pin)	\  argument
74 	for_each_ioapic((idx))		\
75 		for_each_pin((idx), (pin))
232 static void alloc_ioapic_saved_registers(int idx)  in alloc_ioapic_saved_registers()  argument
236 	if (ioapics[idx].saved_registers)  in alloc_ioapic_saved_registers()
239 	size = sizeof(struct IO_APIC_route_entry) * ioapics[idx].nr_registers;  in alloc_ioapic_saved_registers()
240 	ioapics[idx].saved_registers = kzalloc(size, GFP_KERNEL);  in alloc_ioapic_saved_registers()
241 	if (!ioapics[idx].saved_registers)  in alloc_ioapic_saved_registers()
242 		pr_err("IOAPIC %d: suspend/resume impossible!\n", idx);  in alloc_ioapic_saved_registers()
245 static void free_ioapic_saved_registers(int idx)  in free_ioapic_saved_registers()  argument
247 	kfree(ioapics[idx].saved_registers);  in free_ioapic_saved_registers()
248 	ioapics[idx].saved_registers = NULL;  in free_ioapic_saved_registers()
272 static __attribute_const__ struct io_apic __iomem *io_apic_base(int idx)  in io_apic_base()  argument
274 	return (void __iomem *) __fix_to_virt(FIX_IO_APIC_BASE_0 + idx)  in io_apic_base()
275 		+ (mpc_ioapic_addr(idx) & ~PAGE_MASK);  in io_apic_base()
779 #define default_ISA_trigger(idx)	(IOAPIC_EDGE)  argument
780 #define default_ISA_polarity(idx)	(IOAPIC_POL_HIGH)  argument
787 #define default_EISA_trigger(idx)	(EISA_ELCR(mp_irqs[idx].srcbusirq))  argument
788 #define default_EISA_polarity(idx)	default_ISA_polarity(idx)  argument
793 #define default_PCI_trigger(idx)	(IOAPIC_LEVEL)  argument
794 #define default_PCI_polarity(idx)	(IOAPIC_POL_LOW)  argument
796 static int irq_polarity(int idx)  in irq_polarity()  argument
798 	int bus = mp_irqs[idx].srcbus;  in irq_polarity()
803 	switch (mp_irqs[idx].irqflag & 0x03) {  in irq_polarity()
807 			return default_ISA_polarity(idx);  in irq_polarity()
809 			return default_PCI_polarity(idx);  in irq_polarity()
821 static int eisa_irq_trigger(int idx, int bus, int trigger)  in eisa_irq_trigger()  argument
828 		return default_EISA_trigger(idx);  in eisa_irq_trigger()
834 static inline int eisa_irq_trigger(int idx, int bus, int trigger)  in eisa_irq_trigger()  argument
840 static int irq_trigger(int idx)  in irq_trigger()  argument
842 	int bus = mp_irqs[idx].srcbus;  in irq_trigger()
848 	switch ((mp_irqs[idx].irqflag >> 2) & 0x03) {  in irq_trigger()
852 			trigger = default_ISA_trigger(idx);  in irq_trigger()
854 			trigger = default_PCI_trigger(idx);  in irq_trigger()
856 		return eisa_irq_trigger(idx, bus, trigger);  in irq_trigger()
1028 static int mp_map_pin_to_irq(u32 gsi, int idx, int ioapic, int pin,  in mp_map_pin_to_irq()  argument
1040 	if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) {  in mp_map_pin_to_irq()
1041 		irq = mp_irqs[idx].srcbusirq;  in mp_map_pin_to_irq()
1071 static int pin_2_irq(int idx, int ioapic, int pin, unsigned int flags)  in pin_2_irq()  argument
1078 	if (mp_irqs[idx].dstirq != pin)  in pin_2_irq()
1101 	return  mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags, NULL);  in pin_2_irq()
1106 	int ioapic, pin, idx;  in mp_map_gsi_to_irq()  local
1113 	idx = find_irq_entry(ioapic, pin, mp_INT);  in mp_map_gsi_to_irq()
1114 	if ((flags & IOAPIC_MAP_CHECK) && idx < 0)  in mp_map_gsi_to_irq()
1117 	return mp_map_pin_to_irq(gsi, idx, ioapic, pin, flags, info);  in mp_map_gsi_to_irq()
1206 	int apic, idx, pin;  in IO_APIC_irq_trigger()  local
1209 		idx = find_irq_entry(apic, pin, mp_INT);  in IO_APIC_irq_trigger()
1210 		if ((idx != -1) && (irq == pin_2_irq(idx, apic, pin, 0)))  in IO_APIC_irq_trigger()
1211 			return irq_trigger(idx);  in IO_APIC_irq_trigger()
1228 	int idx;  in setup_IO_APIC_irqs()  local
1233 		idx = find_irq_entry(ioapic, pin, mp_INT);  in setup_IO_APIC_irqs()
1234 		if (idx < 0)  in setup_IO_APIC_irqs()
1239 			pin_2_irq(idx, ioapic, pin,  in setup_IO_APIC_irqs()
2113 			int idx;  in check_timer()  local
2114 			idx = find_irq_entry(apic1, pin1, mp_INT);  in check_timer()
2115 			if (idx != -1 && irq_trigger(idx))  in check_timer()
2248 static void ioapic_destroy_irqdomain(int idx)  in ioapic_destroy_irqdomain()  argument
2250 	if (ioapics[idx].irqdomain) {  in ioapic_destroy_irqdomain()
2251 		irq_domain_remove(ioapics[idx].irqdomain);  in ioapic_destroy_irqdomain()
2252 		ioapics[idx].irqdomain = NULL;  in ioapic_destroy_irqdomain()
2422 static u8 io_apic_unique_id(int idx, u8 id)  in io_apic_unique_id()  argument
2426 		return io_apic_get_unique_id(idx, id);  in io_apic_unique_id()
2431 static u8 io_apic_unique_id(int idx, u8 id)  in io_apic_unique_id()  argument
2452 	reg_00.raw = io_apic_read(idx, 0);  in io_apic_unique_id()
2458 			 idx, new_id, id);  in io_apic_unique_id()
2468 	io_apic_write(idx, 0, reg_00.raw);  in io_apic_unique_id()
2469 	reg_00.raw = io_apic_read(idx, 0);  in io_apic_unique_id()
2492 	int ioapic, pin, idx;  in acpi_get_override_irq()  local
2505 	idx = find_irq_entry(ioapic, pin, mp_INT);  in acpi_get_override_irq()
2506 	if (idx < 0)  in acpi_get_override_irq()
2509 	*trigger = irq_trigger(idx);  in acpi_get_override_irq()
2510 	*polarity = irq_polarity(idx);  in acpi_get_override_irq()
2602 	unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;  in io_apic_init_mappings()  local
2628 		set_fixmap_nocache(idx, ioapic_phys);  in io_apic_init_mappings()
2630 			__fix_to_virt(idx) + (ioapic_phys & ~PAGE_MASK),  in io_apic_init_mappings()
2632 		idx++;  in io_apic_init_mappings()
2690 static int bad_ioapic_register(int idx)  in bad_ioapic_register()  argument
2696 	reg_00.raw = io_apic_read(idx, 0);  in bad_ioapic_register()
2697 	reg_01.raw = io_apic_read(idx, 1);  in bad_ioapic_register()
2698 	reg_02.raw = io_apic_read(idx, 2);  in bad_ioapic_register()
2702 			mpc_ioapic_addr(idx));  in bad_ioapic_register()
2711 	int idx;  in find_free_ioapic_entry()  local
2713 	for (idx = 0; idx < MAX_IO_APICS; idx++)  in find_free_ioapic_entry()
2714 		if (ioapics[idx].nr_registers == 0)  in find_free_ioapic_entry()
2715 			return idx;  in find_free_ioapic_entry()
2732 	int idx, ioapic, entries;  in mp_register_ioapic()  local
2746 	idx = find_free_ioapic_entry();  in mp_register_ioapic()
2747 	if (idx >= MAX_IO_APICS) {  in mp_register_ioapic()
2749 			MAX_IO_APICS, idx);  in mp_register_ioapic()
2753 	ioapics[idx].mp_config.type = MP_IOAPIC;  in mp_register_ioapic()
2754 	ioapics[idx].mp_config.flags = MPC_APIC_USABLE;  in mp_register_ioapic()
2755 	ioapics[idx].mp_config.apicaddr = address;  in mp_register_ioapic()
2757 	set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);  in mp_register_ioapic()
2758 	if (bad_ioapic_register(idx)) {  in mp_register_ioapic()
2759 		clear_fixmap(FIX_IO_APIC_BASE_0 + idx);  in mp_register_ioapic()
2763 	ioapics[idx].mp_config.apicid = io_apic_unique_id(idx, id);  in mp_register_ioapic()
2764 	ioapics[idx].mp_config.apicver = io_apic_get_version(idx);  in mp_register_ioapic()
2770 	entries = io_apic_get_redir_entries(idx);  in mp_register_ioapic()
2781 			clear_fixmap(FIX_IO_APIC_BASE_0 + idx);  in mp_register_ioapic()
2785 	gsi_cfg = mp_ioapic_gsi_routing(idx);  in mp_register_ioapic()
2789 	ioapics[idx].irqdomain = NULL;  in mp_register_ioapic()
2790 	ioapics[idx].irqdomain_cfg = *cfg;  in mp_register_ioapic()
2798 		if (mp_irqdomain_create(idx)) {  in mp_register_ioapic()
2799 			clear_fixmap(FIX_IO_APIC_BASE_0 + idx);  in mp_register_ioapic()
2802 		alloc_ioapic_saved_registers(idx);  in mp_register_ioapic()
2807 	if (nr_ioapics <= idx)  in mp_register_ioapic()
2808 		nr_ioapics = idx + 1;  in mp_register_ioapic()
2811 	ioapics[idx].nr_registers = entries;  in mp_register_ioapic()
2814 		idx, mpc_ioapic_id(idx),  in mp_register_ioapic()
2815 		mpc_ioapic_ver(idx), mpc_ioapic_addr(idx),  in mp_register_ioapic()