Merge branch 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'for-linus-merged' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 5177/1: arm/mach-sa1100/Makefile: remove CONFIG_SA1100_USB
  [ARM] 5166/1: magician: add MAINTAINERS entry
  [ARM] fix pnx4008 build errors
  [ARM] Fix SMP booting with non-zero PHYS_OFFSET
  [ARM] 5185/1: Fix spi num_chipselect for lubbock
  [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
  [ARM] Add support for arch/arm/mach-*/include and arch/arm/plat-*/include
  [ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead
  [ARM] Eliminate useless includes of asm/mach-types.h
  [ARM] Fix circular include dependency with IRQ headers
  avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>
  avr32: Introduce arch/avr32/mach-*/include/mach
  avr32: Move include/asm-avr32 to arch/avr32/include/asm
  [ARM] sa1100_wdt: use reset_status to remember watchdog reset status
  [ARM] pxa: introduce reset_status and clear_reset_status for driver's usage
  [ARM] pxa: introduce reset.h for reset specific header information

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/include/mach/entry-macro.S b/arch/arm/mach-s3c2410/include/mach/entry-macro.S
new file mode 100644
index 0000000..473b3cd
--- /dev/null
+++ b/arch/arm/mach-s3c2410/include/mach/entry-macro.S
@@ -0,0 +1,78 @@
+/*
+ * arch/arm/mach-s3c2410/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for S3C2410-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.
+*/
+
+/* We have a problem that the INTOFFSET register does not always
+ * show one interrupt. Occasionally we get two interrupts through
+ * the prioritiser, and this causes the INTOFFSET register to show
+ * what looks like the logical-or of the two interrupt numbers.
+ *
+ * Thanks to Klaus, Shannon, et al for helping to debug this problem
+*/
+
+#define INTPND		(0x10)
+#define INTOFFSET	(0x14)
+
+#include <mach/hardware.h>
+#include <asm/irq.h>
+
+	.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	\base, #S3C24XX_VA_IRQ
+
+		@@ try the interrupt offset register, since it is there
+
+		ldr	\irqstat, [ \base, #INTPND ]
+		teq	\irqstat, #0
+		beq	1002f
+		ldr	\irqnr, [ \base, #INTOFFSET ]
+		mov	\tmp, #1
+		tst	\irqstat, \tmp, lsl \irqnr
+		bne	1001f
+
+		@@ the number specified is not a valid irq, so try
+		@@ and work it out for ourselves
+
+		mov	\irqnr, #0		@@ start here
+
+		@@ work out which irq (if any) we got
+
+		movs	\tmp, \irqstat, lsl#16
+		addeq	\irqnr, \irqnr, #16
+		moveq	\irqstat, \irqstat, lsr#16
+		tst	\irqstat, #0xff
+		addeq	\irqnr, \irqnr, #8
+		moveq	\irqstat, \irqstat, lsr#8
+		tst	\irqstat, #0xf
+		addeq	\irqnr, \irqnr, #4
+		moveq	\irqstat, \irqstat, lsr#4
+		tst	\irqstat, #0x3
+		addeq	\irqnr, \irqnr, #2
+		moveq	\irqstat, \irqstat, lsr#2
+		tst	\irqstat, #0x1
+		addeq	\irqnr, \irqnr, #1
+
+		@@ we have the value
+1001:
+		adds	\irqnr, \irqnr, #IRQ_EINT0
+1002:
+		@@ exit here, Z flag unset if IRQ
+
+	.endm
+
+		/* currently don't need an disable_fiq macro */
+
+		.macro	disable_fiq
+		.endm