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Diffstat (limited to 'include/asm-arm/arch-cl7500/irq.h')
-rw-r--r--include/asm-arm/arch-cl7500/irq.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-arm/arch-cl7500/irq.h b/include/asm-arm/arch-cl7500/irq.h
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index 000000000000..4b286331f3f8
--- /dev/null
+++ b/include/asm-arm/arch-cl7500/irq.h
@@ -0,0 +1,32 @@
+/*
+ * include/asm-arm/arch-cl7500/irq.h
+ *
+ * Copyright (C) 1996 Russell King
+ * Copyright (C) 1999, 2001 Nexus Electronics Ltd.
+ *
+ * Changelog:
+ * 10-10-1996 RMK Brought up to date with arch-sa110eval
+ * 22-08-1998 RMK Restructured IRQ routines
+ * 11-08-1999 PJB Created ARM7500 version, derived from RiscPC code
+ */
+
+#include <asm/hardware/iomd.h>
+#include <asm/io.h>
+
+static inline int fixup_irq(unsigned int irq)
+{
+ if (irq == IRQ_ISA) {
+ int isabits = *((volatile unsigned int *)0xe002b700);
+ if (isabits == 0) {
+ printk("Spurious ISA IRQ!\n");
+ return irq;
+ }
+ irq = IRQ_ISA_BASE;
+ while (!(isabits & 1)) {
+ irq++;
+ isabits >>= 1;
+ }
+ }
+
+ return irq;
+}