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-rw-r--r--kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S34
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S b/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S
new file mode 100644
index 000000000..0a398fe1f
--- /dev/null
+++ b/kernel/arch/arm/mach-iop33x/include/mach/entry-macro.S
@@ -0,0 +1,34 @@
+/*
+ * arch/arm/mach-iop33x/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for IOP33x-based 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/iop33x.h>
+
+ .macro get_irqnr_preamble, base, tmp
+ mrc p15, 0, \tmp, c15, c1, 0
+ orr \tmp, \tmp, #(1 << 6)
+ mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access
+ mrc p15, 0, \tmp, c15, c1, 0
+ mov \tmp, \tmp
+ sub pc, pc, #4 @ cp_wait
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ mrc p6, 0, \irqstat, c14, c0, 0 @ Read IINTVEC
+ cmp \irqstat, #0
+ mrceq p6, 0, \irqstat, c14, c0, 0 @ erratum 63 workaround
+ adds \irqnr, \irqstat, #1
+ movne \irqnr, \irqstat, lsr #2
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ mrc p15, 0, \tmp1, c15, c1, 0
+ ands \tmp2, \tmp1, #(1 << 6)
+ bicne \tmp1, \tmp1, #(1 << 6)
+ mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access
+ .endm