?? irq.h
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/* 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_ */
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