/* Copyright (C) 2004  David Decotigny   Copyright (C) 1999  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   of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,   USA. */#ifndef _SOS_HWINTR_H_#define _SOS_HWINTR_H_/** * @file irq.c * * Hardware interrupts routines management. */#include <sos/errno.h>#define sos_save_flags(flags) \  asm volatile("pushfl ; popl %0":"=g"(flags)::"memory")#define sos_restore_flags(flags) \  asm volatile("push %0; popfl"::"g"(flags):"memory")#define sos_disable_IRQs(flags)    \  ({ sos_save_flags(flags); asm("cli\n"); })#define sos_restore_IRQs(flags)    \  sos_restore_flags(flags)/* Usual IRQ levels */#define SOS_IRQ_TIMER         0#define SOS_IRQ_KEYBOARD      1#define SOS_IRQ_SLAVE_PIC     2#define SOS_IRQ_COM2          3#define SOS_IRQ_COM1          4#define SOS_IRQ_LPT2          5#define SOS_IRQ_FLOPPY        6#define SOS_IRQ_LPT1          7#define SOS_IRQ_8_NOT_DEFINED 8#define SOS_IRQ_RESERVED_1    9#define SOS_IRQ_RESERVED_2    10#define SOS_IRQ_RESERVED_3    11#define SOS_IRQ_RESERVED_4    12#define SOS_IRQ_COPROCESSOR   13#define SOS_IRQ_HARDDISK      14#define SOS_IRQ_RESERVED_5    15typedef void (*sos_irq_handler_t)(int irq_level);/** Setup the PIC */sos_ret_t sos_irq_setup(void);/** * If the routine is not NULL, the IDT is setup to call an IRQ * wrapper upon interrupt, which in turn will call the routine, and * the PIC is programmed to raise an irq.\ If the routine is * NULL, we disable the irq line. */sos_ret_t sos_irq_set_routine(int irq_level,			      sos_irq_handler_t routine);sos_irq_handler_t sos_irq_get_routine(int irq_level);#endif /* _SOS_HWINTR_H_ */