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#ifndef _ALPHA_HW_IRQ_H
#define _ALPHA_HW_IRQ_H
/*
* linux/arch/alpha/kernel/irq.h
*
* Copyright (C) 1995 Linus Torvalds
* Copyright (C) 1998 Richard Henderson
*
* This file contains declarations and inline functions for interfacing
* with the IRQ handling routines in irq.c.
*/
#include <linux/config.h>
#define STANDARD_INIT_IRQ_PROLOG \
outb(0, DMA1_RESET_REG); \
outb(0, DMA2_RESET_REG); \
outb(0, DMA1_CLR_MASK_REG); \
outb(0, DMA2_CLR_MASK_REG)
extern unsigned long _alpha_irq_masks[2];
#define alpha_irq_mask _alpha_irq_masks[0]
extern void common_ack_irq(unsigned long irq);
extern void isa_device_interrupt(unsigned long vector, struct pt_regs * regs);
extern void srm_device_interrupt(unsigned long vector, struct pt_regs * regs);
extern void handle_irq(int irq, int ack, struct pt_regs * regs);
#define RTC_IRQ 8
#ifdef CONFIG_RTC
#define TIMER_IRQ 0 /* timer is the pit */
#else
#define TIMER_IRQ RTC_IRQ /* timer is the rtc */
#endif
/*
* PROBE_MASK is the bitset of irqs that we consider for autoprobing.
*/
/* NOTE: we only handle the first 64 IRQs in this code. */
/* The normal mask includes all the IRQs except timer IRQ 0. */
#define _PROBE_MASK(nr_irqs) \
(((nr_irqs > 63) ? ~0UL : ((1UL << (nr_irqs & 63)) - 1)) & ~1UL)
/* Mask out unused timer irq 0 and RTC irq 8. */
#define P2K_PROBE_MASK (_PROBE_MASK(16) & ~0x101UL)
/* Mask out unused timer irq 0, "irqs" 20-30, and the EISA cascade. */
#define ALCOR_PROBE_MASK (_PROBE_MASK(48) & ~0xfff000000001UL)
/* Leave timer IRQ 0 in the mask. */
#define RUFFIAN_PROBE_MASK (_PROBE_MASK(48) | 1UL)
/* Do not probe/enable beyond the PCI devices. */
#define TSUNAMI_PROBE_MASK _PROBE_MASK(48)
#if defined(CONFIG_ALPHA_GENERIC)
# define PROBE_MASK alpha_mv.irq_probe_mask
#elif defined(CONFIG_ALPHA_P2K)
# define PROBE_MASK P2K_PROBE_MASK
#elif defined(CONFIG_ALPHA_ALCOR) || defined(CONFIG_ALPHA_XLT)
# define PROBE_MASK ALCOR_PROBE_MASK
#elif defined(CONFIG_ALPHA_RUFFIAN)
# define PROBE_MASK RUFFIAN_PROBE_MASK
#elif defined(CONFIG_ALPHA_DP264)
# define PROBE_MASK TSUNAMI_PROBE_MASK
#else
# define PROBE_MASK _PROBE_MASK(NR_IRQS)
#endif
extern char _stext;
static inline void alpha_do_profile (unsigned long pc)
{
if (prof_buffer && current->pid) {
pc -= (unsigned long) &_stext;
pc >>= prof_shift;
/*
* Don't ignore out-of-bounds PC values silently,
* put them into the last histogram slot, so if
* present, they will show up as a sharp peak.
*/
if (pc > prof_len - 1)
pc = prof_len - 1;
atomic_inc((atomic_t *)&prof_buffer[pc]);
}
}
#endif
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