summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/include/asm/irq.h
diff options
context:
space:
mode:
authorBryan Wu <cooloney@kernel.org>2008-08-27 04:51:02 +0200
committerBryan Wu <cooloney@kernel.org>2008-08-27 04:51:02 +0200
commit639f6571458948b5112be2cf00c0c2c04db2897d (patch)
treea4dd7af33d0e92c935ba1e904f6fb7e923ac825e /arch/blackfin/include/asm/irq.h
parentBlackfin arch: fix bug - MPU crashes under stress (diff)
downloadlinux-639f6571458948b5112be2cf00c0c2c04db2897d.tar.xz
linux-639f6571458948b5112be2cf00c0c2c04db2897d.zip
Blackfin arch: move include/asm-blackfin header files to arch/blackfin
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/include/asm/irq.h')
-rw-r--r--arch/blackfin/include/asm/irq.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
new file mode 100644
index 000000000000..89f59e18af93
--- /dev/null
+++ b/arch/blackfin/include/asm/irq.h
@@ -0,0 +1,72 @@
+/*
+ * 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 <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 <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_ */