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Differences between /hwcore/irq.h (Article 7.5) and /hwcore/irq.h (Article 4)


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

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