| /* |
| * 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__ */ |
