464abc5de6
- Simplify init_arch_irq - Make code more readable - Remove useless SSYNCs - Fix comments Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* Changed by HuTao Apr18, 2003
|
|
*
|
|
* Copyright was missing when I got the code so took from MIPS arch ...MaTed---
|
|
* Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
|
|
* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 by Ralf Baechle
|
|
*
|
|
* Adapted for BlackFin (ADI) by Ted Ma <mated@sympatico.ca>
|
|
* Copyright (c) 2002 Arcturus Networks Inc. (www.arcturusnetworks.com)
|
|
* Copyright (c) 2002 Lineo, Inc. <mattw@lineo.com>
|
|
*/
|
|
|
|
#ifndef _BFIN_IRQ_H_
|
|
#define _BFIN_IRQ_H_
|
|
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
/*******************************************************************************
|
|
***** INTRODUCTION ***********
|
|
* On the Blackfin, the interrupt structure allows remmapping of the hardware
|
|
* levels.
|
|
* - I'm going to assume that the H/W level is going to stay at the default
|
|
* settings. If someone wants to go through and abstart this out, feel free
|
|
* to mod the interrupt numbering scheme.
|
|
* - I'm abstracting the interrupts so that uClinux does not know anything
|
|
* about the H/W levels. If you want to change the H/W AND keep the abstracted
|
|
* levels that uClinux sees, you should be able to do most of it here.
|
|
* - I've left the "abstract" numbering sparce in case someone wants to pull the
|
|
* interrupts apart (just the TX/RX for the various devices)
|
|
*******************************************************************************/
|
|
|
|
/* SYS_IRQS and NR_IRQS are defined in <asm/mach-bf5xx/irq.h>*/
|
|
|
|
/*
|
|
* Machine specific interrupt sources.
|
|
*
|
|
* Adding an interrupt service routine for a source with this bit
|
|
* set indicates a special machine specific interrupt source.
|
|
* The machine specific files define these sources.
|
|
*
|
|
* The IRQ_MACHSPEC bit is now gone - the only thing it did was to
|
|
* introduce unnecessary overhead.
|
|
*
|
|
* All interrupt handling is actually machine specific so it is better
|
|
* to use function pointers, as used by the Sparc port, and select the
|
|
* interrupt handling functions when initializing the kernel. This way
|
|
* we save some unnecessary overhead at run-time.
|
|
* 01/11/97 - Jes
|
|
*/
|
|
|
|
extern void ack_bad_irq(unsigned int irq);
|
|
|
|
static __inline__ int irq_canonicalize(int irq)
|
|
{
|
|
return irq;
|
|
}
|
|
|
|
/* count of spurious interrupts */
|
|
/* extern volatile unsigned int num_spurious; */
|
|
|
|
#ifndef NO_IRQ
|
|
#define NO_IRQ ((unsigned int)(-1))
|
|
#endif
|
|
|
|
#define SIC_SYSIRQ(irq) (irq - (IRQ_CORETMR + 1))
|
|
|
|
#endif /* _BFIN_IRQ_H_ */
|