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/* Copyright (C) 2000 MandrakeSoft S.A.
*
* MandrakeSoft S.A.
* 43, rue d'Aboukir
* 75002 Paris - France
* http://www.linux-mandrake.com/
* http://www.mandrakesoft.com/
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PIC_H__
#define __PIC_H__
typedef struct {
Bit8u single_PIC; /* 0=cascaded PIC, 1=master only */
Bit8u interrupt_offset; /* programmable interrupt vector offset */
union {
Bit8u slave_connect_mask; /* for master, a bit for each interrupt line
0=not connect to a slave, 1=connected */
Bit8u slave_id; /* for slave, id number of slave PIC */
} u;
Bit8u sfnm; /* specially fully nested mode: 0=no, 1=yes*/
Bit8u buffered_mode; /* 0=no buffered mode, 1=buffered mode */
Bit8u master_slave; /* master/slave: 0=slave PIC, 1=master PIC */
Bit8u auto_eoi; /* 0=manual EOI, 1=automatic EOI */
Bit8u imr; /* interrupt mask register, 1=masked */
Bit8u isr; /* in service register */
Bit8u irr; /* interrupt request register */
Bit8u read_reg_select; /* 0=IRR, 1=ISR */
Bit8u irq; /* current IRQ number */
Boolean INT; /* INT request pin of PIC */
struct {
Boolean in_init;
Boolean requires_4;
int byte_expected;
} init;
Boolean special_mask;
} onePic_t;
typedef struct {
struct {
onePic_t master_pic;
onePic_t slave_pic;
} s;
} pic_t;
#endif /* #ifndef __PIC_H__ */
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