You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.7 KiB
54 lines
1.7 KiB
20 years ago
|
/*
|
||
|
|
* include/asm-ppc/ppc4xx_pic.h
|
||
|
|
*
|
||
|
|
* Interrupt controller driver for PowerPC 4xx-based processors.
|
||
|
|
*
|
||
|
|
* Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
|
||
|
|
*
|
||
|
|
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
|
||
|
|
* Copyright (c) 2004 Zultys Technologies
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __PPC4XX_PIC_H__
|
||
|
|
#define __PPC4XX_PIC_H__
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
|
||
|
|
/* "Fixed" UIC settings (they are chip, not board specific),
|
||
|
|
* e.g. polarity/triggerring for internal interrupt sources.
|
||
|
|
*
|
||
|
|
* Platform port should provide NR_UICS-sized array named ppc4xx_core_uic_cfg
|
||
|
|
* with these "fixed" settings: .polarity contains exact value which will
|
||
|
|
* be written (masked with "ext_irq_mask") into UICx_PR register,
|
||
|
|
* .triggering - to UICx_TR.
|
||
|
|
*
|
||
|
|
* Settings for external IRQs can be specified separately by the
|
||
|
|
* board support code. In this case properly sized array of unsigned
|
||
|
|
* char named ppc4xx_uic_ext_irq_cfg should be filled with correct
|
||
|
|
* values using IRQ_SENSE_XXXXX and IRQ_POLARITY_XXXXXXX defines.
|
||
|
|
*
|
||
|
|
* If these arrays aren't provided, UIC initialization code keeps firmware
|
||
|
|
* configuration. Also, ppc4xx_uic_ext_irq_cfg implies ppc4xx_core_uic_cfg
|
||
|
|
* is defined.
|
||
|
|
*
|
||
|
|
* Both ppc4xx_core_uic_cfg and ppc4xx_uic_ext_irq_cfg are declared as
|
||
|
|
* "weak" symbols in ppc4xx_pic.c
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
struct ppc4xx_uic_settings {
|
||
|
|
u32 polarity;
|
||
|
|
u32 triggering;
|
||
|
|
u32 ext_irq_mask;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern void ppc4xx_pic_init(void);
|
||
|
|
|
||
|
|
#endif /* __PPC4XX_PIC_H__ */
|