irq.c File Reference

IRQ handling and request. More...

#include <l4/env/errno.h>
#include <l4/omega0/client.h>
#include <l4/rmgr/librmgr.h>
#include <l4/util/irq.h>
#include <l4/util/thread.h>
#include <l4/thread/thread.h>
#include <l4/lock/lock.h>
#include <l4/dde_linux/dde.h>
#include <linux/sched.h>
#include <asm/hardirq.h>
#include <asm/irq.h>
#include "__config.h"
#include "internal.h"

Go to the source code of this file.

Classes
struct	irq_desc
	IRQ descriptor array. More...
Omega0 specific routines
#define	OM_MASK   0x00000001
#define	OM_UNMASK   0x00000002
#define	OM_CONSUME   0x00000004
int	__omega0_attach (unsigned int irq, int *handle)
	Attach IRQ line.
int	__omega0_wait (unsigned int irq, int handle, unsigned int flags)
	Wait for IRQ notification.
Module Variables
int	l4dde_irq_set_prio (unsigned int irq, unsigned prio)
irq_desc	handlers [NR_IRQS]
	IRQ descriptor array.
int	use_omega0 = 0
	Usage flag.
int	_initialized = 0
	initialization flag
RMGR specific routines and PIC handling
void	__enable_irq (unsigned int irq)
	Enable IRQ.
void	__disable_irq (unsigned int irq)
	Disable IRQ.
void	__ack_irq (unsigned int irq)
	Disable and acknowledge IRQ.
Undocumented
void	disable_irq (unsigned int irq_num)
void	disable_irq_nosync (unsigned int irq_num)
void	enable_irq (unsigned int irq_num)
int	probe_irq_on (unsigned long val)
	Old probing of interrupts.
int	probe_irq_off (unsigned long val)
	Old probing of interrupts.
Functions
void	dde_irq_thread (struct irq_desc *irq_desc)
	IRQ handler thread.
int	request_irq (unsigned int irq, void(*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *dev_name, void *dev_id)
	Request Interrupt.
void	free_irq (unsigned int irq, void *dev_id)
	Release Interrupt.
int	l4dde_irq_init (int omega0)
	Initalize IRQ handling.
l4_threadid_t	l4dde_irq_l4_id (int irq)
	Get IRQ thread number.

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Detailed Description

IRQ handling and request.

Date:

08/28/2003

Author:

Christian Helmuth <ch12@os.inf.tu-dresden.de>

Definition in file irq.c.

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Function Documentation

void __ack_irq (  unsigned int  irq  )  [inline, static]

Disable and acknowledge IRQ. Parameters: irq  IRQ number Definition at line 189 of file irq.c. Referenced by dde_irq_thread().

void __disable_irq (  unsigned int  irq  )  [inline, static]

Disable IRQ. Parameters: irq  IRQ number Definition at line 176 of file irq.c. Referenced by dde_irq_thread().

void __enable_irq (  unsigned int  irq  )  [inline, static]

Enable IRQ. Parameters: irq  IRQ number Definition at line 163 of file irq.c. Referenced by dde_irq_thread().

int __omega0_attach (  unsigned int  irq, int *  handle )  [inline, static]

Attach IRQ line. Parameters: irq  IRQ number Return values: handle  IRQ handle Returns: 0 on success (attached interrupt), -1 if attach failed. Definition at line 110 of file irq.c. Referenced by dde_irq_thread().

int __omega0_wait (  unsigned int  irq, int  handle, unsigned int  flags )  [inline, static]

Wait for IRQ notification. Parameters: irq  IRQ number handle  IRQ line handle flags  Flags: OM_MASK request IRQ mask OM_UNMASK request IRQ unmask OM_CONSUME IRQ consumed Definition at line 135 of file irq.c. Referenced by dde_irq_thread().

void dde_irq_thread (  struct irq_desc *  irq_desc  )  [static]

IRQ handler thread. Parameters: irq_desc  IRQ handling descriptor (IRQ number and handler routine) Definition at line 199 of file irq.c. References __ack_irq(), __disable_irq(), __enable_irq(), __omega0_attach(), __omega0_wait(), irq_desc::active, DEBUG_ERRORS, DEBUG_IRQ, DEBUG_MSG, irq_desc::dev_id, irq_desc::handler, l4dde_process_add_worker(), irq_desc::num, and use_omega0. Referenced by request_irq().

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Variable Documentation

struct irq_desc handlers[NR_IRQS] [static]

IRQ descriptor array. Todo: what about IRQ sharing? Referenced by free_irq(), l4dde_irq_init(), l4dde_irq_l4_id(), and request_irq().

int use_omega0 = 0 [static]

Usage flag. If 1 use Omega0 and if 0 use RMGR for interrupts. Definition at line 81 of file irq.c. Referenced by dde_irq_thread(), and l4dde_irq_init().

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