|
[ source navigation ] [ diff markup ] [ identifier search ] [ general search ] |
|||
|
001 /* Copyright (C) 2004 David Decotigny 002 Copyright (C) 1999 Free Software Foundation, Inc. 003 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details. 013 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 018 */ 019 #ifndef _SOS_HWINTR_H_ 020 #define _SOS_HWINTR_H_ 021 022 /** 023 * @file irq.c 024 * 025 * Hardware interrupts routines management. 026 */ 027 028 #include <sos/errno.h> 029 030 #define sos_save_flags(flags) \ 031 asm volatile("pushfl ; popl %0":"=g"(flags)::"memory") 032 #define sos_restore_flags(flags) \ 033 asm volatile("push %0; popfl"::"g"(flags):"memory") 034 035 #define sos_disable_IRQs(flags) \ 036 ({ sos_save_flags(flags); asm("cli\n"); }) 037 #define sos_restore_IRQs(flags) \ 038 sos_restore_flags(flags) 039 040 /* Usual IRQ levels */ 041 #define SOS_IRQ_TIMER 0 042 #define SOS_IRQ_KEYBOARD 1 043 #define SOS_IRQ_SLAVE_PIC 2 044 #define SOS_IRQ_COM2 3 045 #define SOS_IRQ_COM1 4 046 #define SOS_IRQ_LPT2 5 047 #define SOS_IRQ_FLOPPY 6 048 #define SOS_IRQ_LPT1 7 049 #define SOS_IRQ_8_NOT_DEFINED 8 050 #define SOS_IRQ_RESERVED_1 9 051 #define SOS_IRQ_RESERVED_2 10 052 #define SOS_IRQ_RESERVED_3 11 053 #define SOS_IRQ_RESERVED_4 12 054 #define SOS_IRQ_COPROCESSOR 13 055 #define SOS_IRQ_HARDDISK 14 056 #define SOS_IRQ_RESERVED_5 15 057 058 typedef void (*sos_irq_handler_t)(int irq_level); 059 060 /** Setup the PIC */ 061 sos_ret_t sos_irq_setup(void); 062 063 /** 064 * If the routine is not NULL, the IDT is setup to call an IRQ 065 * wrapper upon interrupt, which in turn will call the routine, and 066 * the PIC is programmed to raise an irq.\ If the routine is 067 * NULL, we disable the irq line. 068 */ 069 sos_ret_t sos_irq_set_routine(int irq_level, 070 sos_irq_handler_t routine); 071 072 sos_irq_handler_t sos_irq_get_routine(int irq_level); 073 074 #endif /* _SOS_HWINTR_H_ */
[ source navigation ] | [ diff markup ] | [ identifier search ] | [ general search ] |