summaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-ixp4xx/entry-macro.S
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/arch-ixp4xx/entry-macro.S')
-rw-r--r--include/asm-arm/arch-ixp4xx/entry-macro.S39
1 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ixp4xx/entry-macro.S b/include/asm-arm/arch-ixp4xx/entry-macro.S
new file mode 100644
index 000000000000..455da64832de
--- /dev/null
+++ b/include/asm-arm/arch-ixp4xx/entry-macro.S
@@ -0,0 +1,39 @@
+/*
+ * include/asm-arm/arch-ixp4xx/entry-macro.S
+ *
+ * Low-level IRQ helper macros for IXP4xx-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.
+ */
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET)
+ ldr \irqstat, [\irqstat] @ get interrupts
+ cmp \irqstat, #0
+ beq 1001f
+ clz \irqnr, \irqstat
+ mov \base, #31
+ subs \irqnr, \base, \irqnr
+
+1001:
+ /*
+ * IXP465 has an upper IRQ status register
+ */
+#if defined(CONFIG_CPU_IXP46X)
+ bne 1002f
+ ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET)
+ ldr \irqstat, [\irqstat] @ get upper interrupts
+ mov \irqnr, #63
+ clz \irqstat, \irqstat
+ cmp \irqstat, #32
+ subne \irqnr, \irqnr, \irqstat
+1002:
+#endif
+ .endm
+
+