92  * Prevent NMI reason port (0x61) being accessed simultaneously, can
265 pci_serr_error(unsigned char reason, struct pt_regs *regs)  in pci_serr_error()  argument
271 	pr_emerg("NMI: PCI system error (SERR) for reason %02x on CPU %d.\n",  in pci_serr_error()
272 		 reason, smp_processor_id());  in pci_serr_error()
280 	reason = (reason & NMI_REASON_CLEAR_MASK) | NMI_REASON_CLEAR_SERR;  in pci_serr_error()
281 	outb(reason, NMI_REASON_PORT);  in pci_serr_error()
286 io_check_error(unsigned char reason, struct pt_regs *regs)  in io_check_error()  argument
295 	"NMI: IOCK error (debug interrupt?) for reason %02x on CPU %d.\n",  in io_check_error()
296 		 reason, smp_processor_id());  in io_check_error()
311 	reason = (reason & NMI_REASON_CLEAR_MASK) | NMI_REASON_CLEAR_IOCHK;  in io_check_error()
312 	outb(reason, NMI_REASON_PORT);  in io_check_error()
320 	reason &= ~NMI_REASON_CLEAR_IOCHK;  in io_check_error()
321 	outb(reason, NMI_REASON_PORT);  in io_check_error()
326 unknown_nmi_error(unsigned char reason, struct pt_regs *regs)  in unknown_nmi_error()  argument
343 	pr_emerg_ratelimited("Uhhuh. NMI received for unknown reason %02x on CPU %d.\n",  in unknown_nmi_error()
344 			     reason, smp_processor_id());  in unknown_nmi_error()
358 	unsigned char reason = 0;  in default_do_nmi()  local
422 	reason = x86_platform.get_nmi_reason();  in default_do_nmi()
424 	if (reason & NMI_REASON_MASK) {  in default_do_nmi()
425 		if (reason & NMI_REASON_SERR)  in default_do_nmi()
426 			pci_serr_error(reason, regs);  in default_do_nmi()
427 		else if (reason & NMI_REASON_IOCHK)  in default_do_nmi()
428 			io_check_error(reason, regs);  in default_do_nmi()
476 		unknown_nmi_error(reason, regs);  in default_do_nmi()