Subversion Repositories openrisc_2011-10-31

/* 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 found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: irq_asm.h,v 1.2 2001-09-27 11:59:49 chris Exp $

 */

#ifndef __IRQ_ASM_H__

#define __IRQ_ASM_H__

#define BSP_ASM_IRQ_VECTOR_BASE 0x20

    /* 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 */

    /* 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