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-rw-r--r--arch/arm/mach-kirkwood/include/mach/entry-macro.S40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/include/mach/entry-macro.S b/arch/arm/mach-kirkwood/include/mach/entry-macro.S
new file mode 100644
index 0000000..83e0cba
--- /dev/null
+++ b/arch/arm/mach-kirkwood/include/mach/entry-macro.S
@@ -0,0 +1,40 @@
+/*
+ * arch/arm/mach-kirkwood/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Marvell Kirkwood platforms
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <mach/kirkwood.h>
+
+ .macro disable_fiq
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =IRQ_VIRT_BASE
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ @ check low interrupts
+ ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
+ ldr \tmp, [\base, #IRQ_MASK_LOW_OFF]
+ mov \irqnr, #31
+ ands \irqstat, \irqstat, \tmp
+ bne 1001f
+
+ @ if no low interrupts set, check high interrupts
+ ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
+ ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF]
+ mov \irqnr, #63
+ ands \irqstat, \irqstat, \tmp
+
+ @ find first active interrupt source
+1001: clzne \irqstat, \irqstat
+ subne \irqnr, \irqnr, \irqstat
+ .endm
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