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The LXR Cross Referencer for SOS

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Differences between /hwcore/irq.h (Article 5) and /hwcore/irq.h (Article 9.5)


001 /* Copyright (C) 2004  David Decotigny            001 /* Copyright (C) 2004  David Decotigny
002    Copyright (C) 1999  Free Software Foundatio << 
003                                                   002 
004    This program is free software; you can redi    003    This program is free software; you can redistribute it and/or
005    modify it under the terms of the GNU Genera    004    modify it under the terms of the GNU General Public License
006    as published by the Free Software Foundatio    005    as published by the Free Software Foundation; either version 2
007    of the License, or (at your option) any lat    006    of the License, or (at your option) any later version.
008                                                   007    
009    This program is distributed in the hope tha    008    This program is distributed in the hope that it will be useful,
010    but WITHOUT ANY WARRANTY; without even the     009    but WITHOUT ANY WARRANTY; without even the implied warranty of
011    MERCHANTABILITY or FITNESS FOR A PARTICULAR    010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012    GNU General Public License for more details    011    GNU General Public License for more details.
013                                                   012    
014    You should have received a copy of the GNU     013    You should have received a copy of the GNU General Public License
015    along with this program; if not, write to t    014    along with this program; if not, write to the Free Software
016    Foundation, Inc., 59 Temple Place - Suite 3    015    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
017    USA.                                           016    USA. 
018 */                                                017 */
019 #ifndef _SOS_HWINTR_H_                            018 #ifndef _SOS_HWINTR_H_
020 #define _SOS_HWINTR_H_                            019 #define _SOS_HWINTR_H_
021                                                   020 
                                                   >> 021 
022 /**                                               022 /**
023  * @file irq.c                                    023  * @file irq.c
024  *                                                024  *
025  * Hardware interrupts routines management.       025  * Hardware interrupts routines management.
026  */                                               026  */
027                                                   027 
                                                   >> 028 
028 #include <sos/errno.h>                            029 #include <sos/errno.h>
                                                   >> 030 #include "cpu_context.h"
                                                   >> 031 
029                                                   032 
030 #define sos_save_flags(flags) \                   033 #define sos_save_flags(flags) \
031   asm volatile("pushfl ; popl %0":"=g"(flags):    034   asm volatile("pushfl ; popl %0":"=g"(flags)::"memory")
032 #define sos_restore_flags(flags) \                035 #define sos_restore_flags(flags) \
033   asm volatile("push %0; popfl"::"g"(flags):"m    036   asm volatile("push %0; popfl"::"g"(flags):"memory")
034                                                   037 
                                                   >> 038 
035 #define sos_disable_IRQs(flags)    \              039 #define sos_disable_IRQs(flags)    \
036   ({ sos_save_flags(flags); asm("cli\n"); })      040   ({ sos_save_flags(flags); asm("cli\n"); })
037 #define sos_restore_IRQs(flags)    \              041 #define sos_restore_IRQs(flags)    \
038   sos_restore_flags(flags)                        042   sos_restore_flags(flags)
039                                                   043 
                                                   >> 044 
040 /* Usual IRQ levels */                            045 /* Usual IRQ levels */
041 #define SOS_IRQ_TIMER         0                   046 #define SOS_IRQ_TIMER         0
042 #define SOS_IRQ_KEYBOARD      1                   047 #define SOS_IRQ_KEYBOARD      1
043 #define SOS_IRQ_SLAVE_PIC     2                   048 #define SOS_IRQ_SLAVE_PIC     2
044 #define SOS_IRQ_COM2          3                   049 #define SOS_IRQ_COM2          3
045 #define SOS_IRQ_COM1          4                   050 #define SOS_IRQ_COM1          4
046 #define SOS_IRQ_LPT2          5                   051 #define SOS_IRQ_LPT2          5
047 #define SOS_IRQ_FLOPPY        6                   052 #define SOS_IRQ_FLOPPY        6
048 #define SOS_IRQ_LPT1          7                   053 #define SOS_IRQ_LPT1          7
049 #define SOS_IRQ_8_NOT_DEFINED 8                   054 #define SOS_IRQ_8_NOT_DEFINED 8
050 #define SOS_IRQ_RESERVED_1    9                   055 #define SOS_IRQ_RESERVED_1    9
051 #define SOS_IRQ_RESERVED_2    10                  056 #define SOS_IRQ_RESERVED_2    10
052 #define SOS_IRQ_RESERVED_3    11                  057 #define SOS_IRQ_RESERVED_3    11
053 #define SOS_IRQ_RESERVED_4    12                  058 #define SOS_IRQ_RESERVED_4    12
054 #define SOS_IRQ_COPROCESSOR   13                  059 #define SOS_IRQ_COPROCESSOR   13
055 #define SOS_IRQ_HARDDISK      14                  060 #define SOS_IRQ_HARDDISK      14
056 #define SOS_IRQ_RESERVED_5    15                  061 #define SOS_IRQ_RESERVED_5    15
057                                                   062 
                                                   >> 063 
                                                   >> 064 /** Definition of an hardware IRQ handler */
058 typedef void (*sos_irq_handler_t)(int irq_leve    065 typedef void (*sos_irq_handler_t)(int irq_level);
059                                                   066 
                                                   >> 067 
060 /** Setup the PIC */                              068 /** Setup the PIC */
061 sos_ret_t sos_irq_setup(void);                 !! 069 sos_ret_t sos_irq_subsystem_setup(void);
                                                   >> 070 
062                                                   071 
063 /**                                               072 /**
064  * If the routine is not NULL, the IDT is setu    073  * If the routine is not NULL, the IDT is setup to call an IRQ
065  * wrapper upon interrupt, which in turn will     074  * wrapper upon interrupt, which in turn will call the routine, and
066  * the PIC is programmed to raise an irq.\ If     075  * the PIC is programmed to raise an irq.\ If the routine is
067  * NULL, we disable the irq line.                 076  * NULL, we disable the irq line.
068  */                                               077  */
069 sos_ret_t sos_irq_set_routine(int irq_level,      078 sos_ret_t sos_irq_set_routine(int irq_level,
070                               sos_irq_handler_    079                               sos_irq_handler_t routine);
071                                                   080 
072 sos_irq_handler_t sos_irq_get_routine(int irq_    081 sos_irq_handler_t sos_irq_get_routine(int irq_level);
                                                   >> 082 
                                                   >> 083 
                                                   >> 084 /**
                                                   >> 085  * Tell how many nested IRQ handler have been fired
                                                   >> 086  */
                                                   >> 087 sos_ui32_t sos_irq_get_nested_level(void);
                                                   >> 088 
                                                   >> 089 
                                                   >> 090 /**
                                                   >> 091  * Return TRUE when we are currently executing in interrupt context
                                                   >> 092  */
                                                   >> 093 #define sos_servicing_irq() \
                                                   >> 094   (sos_irq_get_nested_level() > 0)
                                                   >> 095 
073                                                   096 
074 #endif /* _SOS_HWINTR_H_ */                       097 #endif /* _SOS_HWINTR_H_ */
                                                      

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