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Diffstat (limited to 'bsps/i386/include/bsp/irq.h')
-rw-r--r-- | bsps/i386/include/bsp/irq.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/bsps/i386/include/bsp/irq.h b/bsps/i386/include/bsp/irq.h new file mode 100644 index 0000000000..f7e673c8a7 --- /dev/null +++ b/bsps/i386/include/bsp/irq.h @@ -0,0 +1,96 @@ +/** + * @file + * @ingroup i386_irq + * @brief Interrupt handlers + */ + +/* irq.h + * + * This include file describe the data structure and the functions implemented + * by rtems to write interrupt handlers. + * + * CopyRight (C) 1998 valette@crf.canon.fr + * + * This code is heavilly inspired by the public specification of STREAM V2 + * that can be found at : + * + * <http://www.chorus.com/Documentation/index.html> by following + * the STREAM API Specification Document link. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +/** + * @defgroup i386_irq Interrupt handlers + * @ingroup i386_shared + * @brief Data structure and the functions to write interrupt handlers + * @{ + */ + +#ifndef _IRQ_H_ +#define _IRQ_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +/** @brief + * Include some preprocessor value also used by assember code + */ + +#include <bsp/irq_asm.h> +#include <rtems.h> +#define BSP_SHARED_HANDLER_SUPPORT 1 +#include <rtems/irq.h> +#include <rtems/irq-extension.h> + +/*-------------------------------------------------------------------------+ +| Constants ++--------------------------------------------------------------------------*/ + +/** @brief Base vector for our IRQ handlers. */ +#define BSP_IRQ_VECTOR_BASE BSP_ASM_IRQ_VECTOR_BASE +#define BSP_IRQ_LINES_NUMBER 16 +#define BSP_IRQ_MAX_ON_i8259A (BSP_IRQ_LINES_NUMBER - 1) + +/* + * Define the number of valid vectors. This is different to the number of IRQ + * signals supported. Use this value to allocation vector data or range check. + */ +#define BSP_IRQ_VECTOR_NUMBER 17 +#define BSP_IRQ_VECTOR_LOWEST_OFFSET 0 +#define BSP_IRQ_VECTOR_MAX_OFFSET (BSP_IRQ_VECTOR_NUMBER - 1) + +/** @brief + * Interrupt offset in comparison to BSP_ASM_IRQ_VECTOR_BASE + * NB : 1) Interrupt vector number in IDT = offset + BSP_ASM_IRQ_VECTOR_BASE + * 2) The same name should be defined on all architecture + * so that handler connection can be unchanged. + */ +#define BSP_PERIODIC_TIMER 0 /* fixed on all builds of PC */ +#define BSP_KEYBOARD 1 /* fixed on all builds of PC */ +#define BSP_UART_COM2_IRQ 3 /* fixed for ISA bus */ +#define BSP_UART_COM1_IRQ 4 /* fixed for ISA bus */ +#define BSP_UART_COM3_IRQ 5 +#define BSP_UART_COM4_IRQ 6 +#define BSP_RT_TIMER1 8 +#define BSP_RT_TIMER3 10 +#define BSP_SMP_IPI 16 /* not part of the ATPIC */ + +#define BSP_INTERRUPT_VECTOR_MIN BSP_IRQ_VECTOR_LOWEST_OFFSET +#define BSP_INTERRUPT_VECTOR_MAX BSP_IRQ_VECTOR_MAX_OFFSET + +/** @brief + * Type definition for RTEMS managed interrupts + */ +typedef unsigned short rtems_i8259_masks; + +/** @} */ + +#ifdef __cplusplus +} +#endif + +#endif /* _IRQ_H_ */ |