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/* Library providing helper functions for userspace irq handling.
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef _HURD_IRQHELP_
#define _HURD_IRQHELP_
#include <mach.h>
#include <hurd/hurd_types.h>
#include <pthread.h>
#include <stdlib.h>
struct irq;
/* Call once before using other functions */
error_t irqhelp_init(void);
/* Accepts gsi or bus/dev/fun or both, but cant be all -1.
If gsi is -1, will lookup the gsi via ACPI.
If bus/dev/fun are -1, must pass in gsi.
Returns a pointer to be used with other functions. */
struct irq * irqhelp_install_interrupt_handler(int gsi, int bus, int dev, int fun,
void (*handler)(void *), void *context);
/* Install as pthread */
void * irqhelp_server_loop(void *arg);
/* Enable an irq */
void irqhelp_enable_irq(struct irq *irq);
/* Disable an irq */
void irqhelp_disable_irq(struct irq *irq);
/* Call to deregister a handler */
error_t irqhelp_remove_interrupt_handler(struct irq *irq);
#endif
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