mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
c6ba01a4c7
Support function for PCI. We don't use any advance mapping mechanism that's why implementation is simple. Signed-off-by: Michal Simek <monstr@monstr.eu>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 2006 Atmark Techno, Inc.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#ifndef _ASM_MICROBLAZE_IRQ_H
|
|
#define _ASM_MICROBLAZE_IRQ_H
|
|
|
|
#define NR_IRQS 32
|
|
#include <asm-generic/irq.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
/* This type is the placeholder for a hardware interrupt number. It has to
|
|
* be big enough to enclose whatever representation is used by a given
|
|
* platform.
|
|
*/
|
|
typedef unsigned long irq_hw_number_t;
|
|
|
|
extern unsigned int nr_irq;
|
|
|
|
#define NO_IRQ (-1)
|
|
|
|
struct pt_regs;
|
|
extern void do_IRQ(struct pt_regs *regs);
|
|
|
|
/**
|
|
* irq_of_parse_and_map - Parse and Map an interrupt into linux virq space
|
|
* @device: Device node of the device whose interrupt is to be mapped
|
|
* @index: Index of the interrupt to map
|
|
*
|
|
* This function is a wrapper that chains of_irq_map_one() and
|
|
* irq_create_of_mapping() to make things easier to callers
|
|
*/
|
|
struct device_node;
|
|
extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
|
|
|
|
/** FIXME - not implement
|
|
* irq_dispose_mapping - Unmap an interrupt
|
|
* @virq: linux virq number of the interrupt to unmap
|
|
*/
|
|
static inline void irq_dispose_mapping(unsigned int virq)
|
|
{
|
|
return;
|
|
}
|
|
|
|
struct irq_host;
|
|
|
|
/**
|
|
* irq_create_mapping - Map a hardware interrupt into linux virq space
|
|
* @host: host owning this hardware interrupt or NULL for default host
|
|
* @hwirq: hardware irq number in that host space
|
|
*
|
|
* Only one mapping per hardware interrupt is permitted. Returns a linux
|
|
* virq number.
|
|
* If the sense/trigger is to be specified, set_irq_type() should be called
|
|
* on the number returned from that call.
|
|
*/
|
|
extern unsigned int irq_create_mapping(struct irq_host *host,
|
|
irq_hw_number_t hwirq);
|
|
|
|
/**
|
|
* irq_create_of_mapping - Map a hardware interrupt into linux virq space
|
|
* @controller: Device node of the interrupt controller
|
|
* @inspec: Interrupt specifier from the device-tree
|
|
* @intsize: Size of the interrupt specifier from the device-tree
|
|
*
|
|
* This function is identical to irq_create_mapping except that it takes
|
|
* as input informations straight from the device-tree (typically the results
|
|
* of the of_irq_map_*() functions.
|
|
*/
|
|
extern unsigned int irq_create_of_mapping(struct device_node *controller,
|
|
u32 *intspec, unsigned int intsize);
|
|
|
|
#endif /* _ASM_MICROBLAZE_IRQ_H */
|