i8259.h

omap osk环境下的bootloader,包含完整的uboot源代码

/*
 * (C) Copyright 2002
 * John W. Linville, [e-mail]
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#define ICW1_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_ICW1
#define ICW1_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_ICW1
#define ICW2_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_ICW2
#define ICW2_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_ICW2
#define ICW3_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_ICW3
#define ICW3_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_ICW3
#define ICW4_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_ICW4
#define ICW4_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_ICW4
#define OCW1_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_OCW1
#define OCW1_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_OCW1
#define OCW2_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_OCW2
#define OCW2_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_OCW2
#define OCW3_1  CFG_ISA_IO_BASE_ADDRESS + ISA_INT1_OCW3
#define OCW3_2  CFG_ISA_IO_BASE_ADDRESS + ISA_INT2_OCW3

#define IMR_1   OCW1_1
#define IMR_2   OCW1_2

#define ISR_1   ICW1_1
#define ISR_2   ICW1_2

#define IPL_1   ICW1_1
#define IPL_2   ICW1_2

extern void i8259_init(void);

extern int i8259_get_irq(struct pt_regs *regs);

extern void i8259_mask_and_ack(int irq);

extern void i8259_mask_irq(int irq);

extern void i8259_unmask_irq(int irq);