kernel-ark/include/asm-avr32/intc.h
Haavard Skinnemoen 5f97f7f940 [PATCH] avr32 architecture
This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.

AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density.  The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.

The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf

The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture.  It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit.  It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.

Full data sheet is available from

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

Information about the AT32STK1000 development board can be found at

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918

including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.

Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.

This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.

[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:54 -07:00

129 lines
3.3 KiB
C

#ifndef __ASM_AVR32_INTC_H
#define __ASM_AVR32_INTC_H
#include <linux/sysdev.h>
#include <linux/interrupt.h>
struct irq_controller;
struct irqaction;
struct pt_regs;
struct platform_device;
/* Information about the internal interrupt controller */
struct intc_device {
/* ioremapped address of configuration block */
void __iomem *regs;
/* the physical device */
struct platform_device *pdev;
/* Number of interrupt lines per group. */
unsigned int irqs_per_group;
/* The highest group ID + 1 */
unsigned int nr_groups;
/*
* Bitfield indicating which groups are actually in use. The
* size of the array is
* ceil(group_max / (8 * sizeof(unsigned int))).
*/
unsigned int group_mask[];
};
struct irq_controller_class {
/*
* A short name identifying this kind of controller.
*/
const char *typename;
/*
* Handle the IRQ. Must do any necessary acking and masking.
*/
irqreturn_t (*handle)(int irq, void *dev_id, struct pt_regs *regs);
/*
* Register a new IRQ handler.
*/
int (*setup)(struct irq_controller *ctrl, unsigned int irq,
struct irqaction *action);
/*
* Unregister a IRQ handler.
*/
void (*free)(struct irq_controller *ctrl, unsigned int irq,
void *dev_id);
/*
* Mask the IRQ in the interrupt controller.
*/
void (*mask)(struct irq_controller *ctrl, unsigned int irq);
/*
* Unmask the IRQ in the interrupt controller.
*/
void (*unmask)(struct irq_controller *ctrl, unsigned int irq);
/*
* Set the type of the IRQ. See below for possible types.
* Return -EINVAL if a given type is not supported
*/
int (*set_type)(struct irq_controller *ctrl, unsigned int irq,
unsigned int type);
/*
* Return the IRQ type currently set
*/
unsigned int (*get_type)(struct irq_controller *ctrl, unsigned int irq);
};
struct irq_controller {
struct irq_controller_class *class;
unsigned int irq_group;
unsigned int first_irq;
unsigned int nr_irqs;
struct list_head list;
};
struct intc_group_desc {
struct irq_controller *ctrl;
irqreturn_t (*handle)(int, void *, struct pt_regs *);
unsigned long flags;
void *dev_id;
const char *devname;
};
/*
* The internal interrupt controller. Defined in board/part-specific
* devices.c.
* TODO: Should probably be defined per-cpu.
*/
extern struct intc_device intc;
extern int request_internal_irq(unsigned int irq,
irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long irqflags,
const char *devname, void *dev_id);
extern void free_internal_irq(unsigned int irq);
/* Only used by time_init() */
extern int setup_internal_irq(unsigned int irq, struct intc_group_desc *desc);
/*
* Set interrupt priority for a given group. `group' can be found by
* using irq_to_group(irq). Priority can be from 0 (lowest) to 3
* (highest). Higher-priority interrupts will preempt lower-priority
* interrupts (unless interrupts are masked globally).
*
* This function does not check for conflicts within a group.
*/
extern int intc_set_priority(unsigned int group,
unsigned int priority);
/*
* Returns a bitmask of pending interrupts in a group.
*/
extern unsigned long intc_get_pending(unsigned int group);
/*
* Register a new external interrupt controller. Returns the first
* external IRQ number that is assigned to the new controller.
*/
extern int intc_register_controller(struct irq_controller *ctrl);
#endif /* __ASM_AVR32_INTC_H */