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Diffstat (limited to 'include/bsp/irq_asm.h')
| -rw-r--r-- | include/bsp/irq_asm.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/bsp/irq_asm.h b/include/bsp/irq_asm.h new file mode 100644 index 0000000000..31575adb94 --- /dev/null +++ b/include/bsp/irq_asm.h @@ -0,0 +1,33 @@ +/** + * @file + * @ingroup i386_irq + * @brief + */ + +/* irq_asm.h + * + * This include file has defines to represent some contant used + * to program and manage the Intel 8259 interrupt controller + * + * + * COPYRIGHT (c) 1998 valette@crf.canon.fr + * + * 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. + */ +#ifndef __IRQ_ASM_H__ +#define __IRQ_ASM_H__ + +#define BSP_ASM_IRQ_VECTOR_BASE 0x20 + /** @brief PIC's command and mask registers */ +#define PIC_MASTER_COMMAND_IO_PORT 0x20 ///< Master PIC command register +#define PIC_SLAVE_COMMAND_IO_PORT 0xa0 ///< Slave PIC command register +#define PIC_MASTER_IMR_IO_PORT 0x21 ///< Master PIC Interrupt Mask Register +#define PIC_SLAVE_IMR_IO_PORT 0xa1 ///< Slave PIC Interrupt Mask Register + + /** @brief Command for specific EOI (End Of Interrupt): Interrupt acknowledge */ +#define PIC_EOSI 0x60 ///< End of Specific Interrupt (EOSI) +#define PIC_EOI 0x20 ///< Generic End of Interrupt (EOI) + +#endif |