Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (197 commits)
  sh: add spi header and r2d platform data V3
  sh: update r7780rp interrupt code
  sh: remove consistent alloc stuff from the machine vector
  sh: use declared coherent memory for dreamcast pci ethernet adapter
  sh: declared coherent memory support V2
  sh: Add support for SDK7780 board.
  sh: constify function pointer tables
  sh: Kill off -traditional for linker script.
  cdrom: Add support for Sega Dreamcast GD-ROM.
  sh: Kill off hs7751rvoip reference from arch/sh/Kconfig.
  sh: Drop r7780rp_defconfig, use r7780mp_defconfig as kbuild default.
  sh: Kill off dead HS771RVoIP board support.
  sh: r7785rp: Fix up DECLARE_INTC_DESC() arg mismatch.
  sh: r7785rp: Hook up the rest of the HL7785 FPGA IRQ vectors.
  sh: r2d - enable sm501 usb host function
  sh: remove voyagergx
  sh: r2d - add lcd planel timings to sm501 platform data
  sh: Add OHCI and UDC platform devices for SH7720.
  sh: intc - remove default interrupt priority tables
  sh: Correct pte size mismatch for X2 TLB.
  ...

1 files changed, 154 insertions, 0 deletions

diff --git a/arch/sh/lib/clear_page.S b/arch/sh/lib/clear_page.S
new file mode 100644
index 00000000000..3539123fe51
--- /dev/null
+++ b/arch/sh/lib/clear_page.S
@@ -0,0 +1,154 @@
+/*
+ * __clear_user_page, __clear_user, clear_page implementation of SuperH
+ *
+ * Copyright (C) 2001  Kaz Kojima
+ * Copyright (C) 2001, 2002  Niibe Yutaka
+ * Copyright (C) 2006  Paul Mundt
+ */
+#include <linux/linkage.h>
+#include <asm/page.h>
+
+/*
+ * clear_page
+ * @to: P1 address
+ *
+ * void clear_page(void *to)
+ */
+
+/*
+ * r0 --- scratch
+ * r4 --- to
+ * r5 --- to + PAGE_SIZE
+ */
+ENTRY(clear_page)
+	mov	r4,r5
+	mov.l	.Llimit,r0
+	add	r0,r5
+	mov	#0,r0
+	!
+1:
+#if defined(CONFIG_CPU_SH3)
+	mov.l	r0,@r4
+#elif defined(CONFIG_CPU_SH4)
+	movca.l	r0,@r4
+	mov	r4,r1
+#endif
+	add	#32,r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+	mov.l	r0,@-r4
+#if defined(CONFIG_CPU_SH4)
+	ocbwb	@r1
+#endif
+	cmp/eq	r5,r4
+	bf/s	1b
+	 add	#28,r4
+	!
+	rts
+	 nop
+
+	.balign 4
+.Llimit:	.long	(PAGE_SIZE-28)
+
+ENTRY(__clear_user)
+	!
+	mov	#0, r0
+	mov	#0xe0, r1	! 0xffffffe0
+	!
+	! r4..(r4+31)&~32 	   -------- not aligned	[ Area 0 ]
+	! (r4+31)&~32..(r4+r5)&~32 -------- aligned	[ Area 1 ]
+	! (r4+r5)&~32..r4+r5       -------- not aligned	[ Area 2 ]
+	!
+	! Clear area 0
+	mov	r4, r2
+	!
+	tst	r1, r5		! length < 32
+	bt	.Larea2		! skip to remainder
+	!
+	add	#31, r2
+	and	r1, r2
+	cmp/eq	r4, r2
+	bt	.Larea1
+	mov	r2, r3
+	sub	r4, r3
+	mov	r3, r7
+	mov	r4, r2
+	!
+.L0:	dt	r3
+0:	mov.b	r0, @r2
+	bf/s	.L0
+	 add	#1, r2
+	!
+	sub	r7, r5
+	mov	r2, r4
+.Larea1:
+	mov	r4, r3
+	add	r5, r3
+	and	r1, r3
+	cmp/hi	r2, r3
+	bf	.Larea2
+	!
+	! Clear area 1
+#if defined(CONFIG_CPU_SH4)
+1:	movca.l	r0, @r2
+#else
+1:	mov.l	r0, @r2
+#endif
+	add	#4, r2
+2:	mov.l	r0, @r2
+	add	#4, r2
+3:	mov.l	r0, @r2
+	add	#4, r2
+4:	mov.l	r0, @r2
+	add	#4, r2
+5:	mov.l	r0, @r2
+	add	#4, r2
+6:	mov.l	r0, @r2
+	add	#4, r2
+7:	mov.l	r0, @r2
+	add	#4, r2
+8:	mov.l	r0, @r2
+	add	#4, r2
+	cmp/hi	r2, r3
+	bt/s	1b
+	 nop
+	!
+	! Clear area 2
+.Larea2:
+	mov	r4, r3
+	add	r5, r3
+	cmp/hs	r3, r2
+	bt/s	.Ldone
+	 sub	r2, r3
+.L2:	dt	r3
+9:	mov.b	r0, @r2
+	bf/s	.L2
+	 add	#1, r2
+	!
+.Ldone:	rts
+	 mov	#0, r0	! return 0 as normal return
+
+	! return the number of bytes remained
+.Lbad_clear_user:
+	mov	r4, r0
+	add	r5, r0
+	rts
+	 sub	r2, r0
+
+.section __ex_table,"a"
+	.align 2
+	.long	0b, .Lbad_clear_user
+	.long	1b, .Lbad_clear_user
+	.long	2b, .Lbad_clear_user
+	.long	3b, .Lbad_clear_user
+	.long	4b, .Lbad_clear_user
+	.long	5b, .Lbad_clear_user
+	.long	6b, .Lbad_clear_user
+	.long	7b, .Lbad_clear_user
+	.long	8b, .Lbad_clear_user
+	.long	9b, .Lbad_clear_user
+.previous