/* * 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_ */