1 files changed, 44 insertions, 0 deletions

diff --git a/arch/arm/mach-versatile/include/mach/entry-macro.S b/arch/arm/mach-versatile/include/mach/entry-macro.S
new file mode 100644
index 000000000000..8c8020980585
--- /dev/null
+++ b/arch/arm/mach-versatile/include/mach/entry-macro.S
@@ -0,0 +1,44 @@
+/*
+ * arch/arm/mach-versatile/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Versatile 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/hardware.h>
+#include <asm/hardware/vic.h>
+
+                .macro  disable_fiq
+                .endm
+
+                .macro  get_irqnr_preamble, base, tmp
+                ldr     \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
+                .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+                ldr     \irqstat, [\base, #VIC_IRQ_STATUS]      @ get masked status
+                mov     \irqnr, #0
+                teq     \irqstat, #0
+                beq     1003f
+
+1001:           tst     \irqstat, #15
+                bne     1002f
+                add     \irqnr, \irqnr, #4
+                movs    \irqstat, \irqstat, lsr #4
+                bne     1001b
+1002:           tst     \irqstat, #1
+                bne     1003f
+                add     \irqnr, \irqnr, #1
+                movs    \irqstat, \irqstat, lsr #1
+                bne     1002b
+1003:           /* EQ will be set if no irqs pending */
+
+@               clz     \irqnr, \irqstat
+@1003:          /* EQ will be set if we reach MAXIRQNUM */
+                .endm
+