| /* | |
| * 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__ */ |