#ifndef _ASM_IA64_HW_IRQ_H #define _ASM_IA64_HW_IRQ_H /* * Copyright (C) 2001-2003 Hewlett-Packard Co * David Mosberger-Tang <davidm@hpl.hp.com> */ #include <linux/interrupt.h> #include <linux/sched.h> #include <linux/types.h> #include <linux/profile.h> #include <asm/machvec.h> #include <asm/ptrace.h> #include <asm/smp.h> typedef u8 ia64_vector; /* * 0 special * * 1,3-14 are reserved from firmware * * 16-255 (vectored external interrupts) are available * * 15 spurious interrupt (see IVR) * * 16 lowest priority, 255 highest priority * * 15 classes of 16 interrupts each. */ #define IA64_MIN_VECTORED_IRQ 16 #define IA64_MAX_VECTORED_IRQ 255 #define IA64_NUM_VECTORS 256 #define AUTO_ASSIGN -1 #define IA64_SPURIOUS_INT_VECTOR 0x0f /* * Vectors 0x10-0x1f are used for low priority interrupts, e.g. CMCI. */ #define IA64_CPEP_VECTOR 0x1c /* corrected platform error polling vector */ #define IA64_CMCP_VECTOR 0x1d /* corrected machine-check polling vector */ #define IA64_CPE_VECTOR 0x1e /* corrected platform error interrupt vector */ #define IA64_CMC_VECTOR 0x1f /* corrected machine-check interrupt vector */ /* * Vectors 0x20-0x2f are reserved for legacy ISA IRQs. */ #define IA64_FIRST_DEVICE_VECTOR 0x30 #define IA64_LAST_DEVICE_VECTOR 0xe7 #define IA64_NUM_DEVICE_VECTORS (IA64_LAST_DEVICE_VECTOR - IA64_FIRST_DEVICE_VECTOR + 1) #define IA64_MCA_RENDEZ_VECTOR 0xe8 /* MCA rendez interrupt */ #define IA64_PERFMON_VECTOR 0xee /* performanc monitor interrupt vector */ #define IA64_TIMER_VECTOR 0xef /* use highest-prio group 15 interrupt for timer */ #define IA64_MCA_WAKEUP_VECTOR 0xf0 /* MCA wakeup (must be >MCA_RENDEZ_VECTOR) */ #define IA64_IPI_RESCHEDULE 0xfd /* SMP reschedule */ #define IA64_IPI_VECTOR 0xfe /* inter-processor interrupt vector */ /* Used for encoding redirected irqs */ #define IA64_IRQ_REDIRECTED (1 << 31) /* IA64 inter-cpu interrupt related definitions */ #define IA64_IPI_DEFAULT_BASE_ADDR 0xfee00000 /* Delivery modes for inter-cpu interrupts */ enum { IA64_IPI_DM_INT = 0x0, /* pend an external interrupt */ IA64_IPI_DM_PMI = 0x2, /* pend a PMI */ IA64_IPI_DM_NMI = 0x4, /* pend an NMI (vector 2) */ IA64_IPI_DM_INIT = 0x5, /* pend an INIT interrupt */ IA64_IPI_DM_EXTINT = 0x7, /* pend an 8259-compatible interrupt. */ }; extern __u8 isa_irq_to_vector_map[16]; #define isa_irq_to_vector(x) isa_irq_to_vector_map[(x)] extern struct hw_interrupt_type irq_type_ia64_lsapic; /* CPU-internal interrupt controller */ extern int assign_irq_vector (int irq); /* allocate a free vector */ extern void free_irq_vector (int vector); extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect); extern void register_percpu_irq (ia64_vector vec, struct irqaction *action); static inline void hw_resend_irq (struct hw_interrupt_type *h, unsigned int vector) { platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0); } /* * Default implementations for the irq-descriptor API: */ extern irq_desc_t irq_desc[NR_IRQS]; #ifndef CONFIG_IA64_GENERIC static inline unsigned int __ia64_local_vector_to_irq (ia64_vector vec) { return (unsigned int) vec; } #endif /* * Next follows the irq descriptor interface. On IA-64, each CPU supports 256 interrupt * vectors. On smaller systems, there is a one-to-one correspondence between interrupt * vectors and the Linux irq numbers. However, larger systems may have multiple interrupt * domains meaning that the translation from vector number to irq number depends on the * interrupt domain that a CPU belongs to. This API abstracts such platform-dependent * differences and provides a uniform means to translate between vector and irq numbers * and to obtain the irq descriptor for a given irq number. */ /* Extract the IA-64 vector that corresponds to IRQ. */ static inline ia64_vector irq_to_vector (int irq) { return (ia64_vector) irq; } /* * Convert the local IA-64 vector to the corresponding irq number. This translation is * done in the context of the interrupt domain that the currently executing CPU belongs * to. */ static inline unsigned int local_vector_to_irq (ia64_vector vec) { return platform_local_vector_to_irq(vec); } #endif /* _ASM_IA64_HW_IRQ_H */