Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp2000/include/mach/entry-macro.S b/arch/arm/mach-ixp2000/include/mach/entry-macro.S
new file mode 100644
index 00000000000..5850ffc8c75
--- /dev/null
+++ b/arch/arm/mach-ixp2000/include/mach/entry-macro.S
@@ -0,0 +1,60 @@
+/*
+ * arch/arm/mach-ixp2000/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for IXP2000-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/irqs.h>
+
+		.macro  disable_fiq
+		.endm
+
+		.macro  get_irqnr_preamble, base, tmp
+		.endm
+
+		.macro  arch_ret_to_user, tmp1, tmp2
+		.endm
+
+		.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+		mov	\irqnr, #0x0              @clear out irqnr as default
+                mov	\base, #0xfe000000
+		orr	\base, \base, #0x00e00000
+		orr	\base, \base, #0x08
+		ldr	\irqstat, [\base]         @ get interrupts
+
+		cmp	\irqstat, #0
+		beq	1001f
+
+		clz     \irqnr, \irqstat
+		mov     \base, #31
+		subs    \irqnr, \base, \irqnr
+
+		/*
+		 * We handle PCIA and PCIB here so we don't have an
+		 * extra layer of code just to check these two bits.
+		 */
+		cmp	\irqnr, #IRQ_IXP2000_PCI
+		bne	1001f
+
+		mov	\base, #0xfe000000
+		orr	\base, \base, #0x00c00000
+		orr	\base, \base, #0x00000100
+		orr	\base, \base, #0x00000058
+		ldr	\irqstat, [\base]
+
+		mov	\tmp, #(1<<26)
+		tst	\irqstat, \tmp
+		movne	\irqnr, #IRQ_IXP2000_PCIA
+		bne	1001f
+
+		mov	\tmp, #(1<<27)
+		tst	\irqstat, \tmp
+		movne	\irqnr, #IRQ_IXP2000_PCIB
+
+1001:
+		.endm
+