47 	int (*get)(struct pci_dev *router, struct pci_dev *dev, int pirq);
48 	int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq,
54 	int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
176 static unsigned int read_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr)  in read_config_nybble()  argument
181 	pci_read_config_byte(router, reg, &x);  in read_config_nybble()
185 static void write_config_nybble(struct pci_dev *router, unsigned offset,  in write_config_nybble()  argument
191 	pci_read_config_byte(router, reg, &x);  in write_config_nybble()
193 	pci_write_config_byte(router, reg, x);  in write_config_nybble()
201 static int pirq_ali_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_ali_get()  argument
206 	return irqmap[read_config_nybble(router, 0x48, pirq-1)];  in pirq_ali_get()
209 static int pirq_ali_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_ali_set()  argument
216 		write_config_nybble(router, 0x48, pirq-1, val);  in pirq_ali_set()
226 static int pirq_piix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_piix_get()  argument
230 	pci_read_config_byte(router, pirq, &x);  in pirq_piix_get()
234 static int pirq_piix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_piix_set()  argument
236 	pci_write_config_byte(router, pirq, irq);  in pirq_piix_set()
245 static int pirq_via_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_via_get()  argument
247 	return read_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq);  in pirq_via_get()
250 static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_via_set()  argument
252 	write_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq, irq);  in pirq_via_set()
261 static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_via586_get()  argument
266 	return read_config_nybble(router, 0x55, pirqmap[pirq-1]);  in pirq_via586_get()
269 static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_via586_set()  argument
274 	write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);  in pirq_via586_set()
283 static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_ite_get()  argument
288 	return read_config_nybble(router, 0x43, pirqmap[pirq-1]);  in pirq_ite_get()
291 static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_ite_set()  argument
296 	write_config_nybble(router, 0x43, pirqmap[pirq-1], irq);  in pirq_ite_set()
304 static int pirq_opti_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_opti_get()  argument
306 	return read_config_nybble(router, 0xb8, pirq >> 4);  in pirq_opti_get()
309 static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_opti_set()  argument
311 	write_config_nybble(router, 0xb8, pirq >> 4, irq);  in pirq_opti_set()
320 static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_cyrix_get()  argument
322 	return read_config_nybble(router, 0x5C, (pirq-1)^1);  in pirq_cyrix_get()
325 static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_cyrix_set()  argument
327 	write_config_nybble(router, 0x5C, (pirq-1)^1, irq);  in pirq_cyrix_set()
332  *	PIRQ routing for SiS 85C503 router used in several SiS chipsets.
337  *	- different revision of the router have a different layout for
357  *	router (ISA-bridge) should be 0x01 or 0xb0.
365  *	Onchip routing for router rev-id 0x01/0xb0 and probably 0x00/0xb1:
383  *	router revision 0x04 and there are changes in the register layout
386  *	Onchip routing for router rev-id 0x04 (try-and-error observation)
396 static int pirq_sis_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_sis_get()  argument
404 	pci_read_config_byte(router, reg, &x);  in pirq_sis_get()
408 static int pirq_sis_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_sis_set()  argument
416 	pci_read_config_byte(router, reg, &x);  in pirq_sis_set()
419 	pci_write_config_byte(router, reg, x);  in pirq_sis_set()
426  *       config space of VLSI 82C534 PCI-bridge/router (1004:0102)
432 static int pirq_vlsi_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_vlsi_get()  argument
436 		dev_info(&dev->dev, "VLSI router PIRQ escape (%d)\n", pirq);  in pirq_vlsi_get()
439 	return read_config_nybble(router, 0x74, pirq-1);  in pirq_vlsi_get()
442 static int pirq_vlsi_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_vlsi_set()  argument
446 		dev_info(&dev->dev, "VLSI router PIRQ escape (%d)\n", pirq);  in pirq_vlsi_set()
449 	write_config_nybble(router, 0x74, pirq-1, irq);  in pirq_vlsi_set()
464 static int pirq_serverworks_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_serverworks_get()  argument
470 static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev,  in pirq_serverworks_set()  argument
486 static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_amd756_get()  argument
491 		irq = read_config_nybble(router, 0x56, pirq - 1);  in pirq_amd756_get()
493 		 "AMD756: dev [%04x:%04x], router PIRQ %d get IRQ %d\n",  in pirq_amd756_get()
498 static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_amd756_set()  argument
501 		 "AMD756: dev [%04x:%04x], router PIRQ %d set IRQ %d\n",  in pirq_amd756_set()
504 		write_config_nybble(router, 0x56, pirq - 1, irq);  in pirq_amd756_set()
511 static int pirq_pico_get(struct pci_dev *router, struct pci_dev *dev, int pirq)  in pirq_pico_get()  argument
517 static int pirq_pico_set(struct pci_dev *router, struct pci_dev *dev, int pirq,  in pirq_pico_set()  argument
530 static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)  in pirq_bios_set()  argument
539 static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in intel_router_probe()  argument
547 	/* 440GX has a proprietary PIRQ router -- don't use it */  in intel_router_probe()
617 				struct pci_dev *router, u16 device)  in via_router_probe()  argument
625 		switch (router->device) {  in via_router_probe()
671 static __init int vlsi_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in vlsi_router_probe()  argument
685 		struct pci_dev *router, u16 device)  in serverworks_router_probe()  argument
698 static __init int sis_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in sis_router_probe()  argument
709 static __init int cyrix_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in cyrix_router_probe()  argument
721 static __init int opti_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in opti_router_probe()  argument
733 static __init int ite_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in ite_router_probe()  argument
745 static __init int ali_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in ali_router_probe()  argument
758 static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in amd_router_probe()  argument
778 static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)  in pico_router_probe()  argument
839 	DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for [%04x:%04x]\n",  in pirq_find_router()
845 		DBG(KERN_DEBUG "PCI: Interrupt router not found at "  in pirq_find_router()
851 		/* First look for a router match */  in pirq_find_router()
860 	dev_info(&pirq_router_dev->dev, "%s IRQ router [%04x:%04x]\n",  in pirq_find_router()