Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (68 commits)
  [MIPS] remove Documentation/mips/GT64120.README
  [MIPS] Malta: remaining bits of the board support code cleanup
  [MIPS] Malta: make the helper function static
  [MIPS] Malta: fix braces at single statement blocks
  [MIPS] Malta, Atlas: move an extern function declaration to the header file
  [MIPS] Malta: Use C89 style for comments
  [MIPS] Malta: else should follow close brace in malta_int.c
  [MIPS] Malta: remove a superfluous comment
  [MIPS] Malta: include <linux/cpu.h> instead of <asm/cpu.h>
  [MIPS] Malta, Atlas, Sead: remove an extern from .c files
  [MIPS] Malta: fix oversized lines in malta_int.c
  [MIPS] Malta: remove a dead function declaration
  [MIPS] Malta: use tabs not spaces
  [MIPS] Malta: set up the screen info in a separate function
  [MIPS] Malta: check the PCI clock frequency in a separate function
  [MIPS] Malta: use the KERN_ facility level in printk()
  [MIPS] Malta: use Linux kernel style for structure initialization
  [MIPS]: constify function pointer tables
  [MIPS] compat: handle argument endianess of sys32_(f)truncate64 with merge_64
  [MIPS] Cobalt 64-bits kernels can be safely unmarked experimental
  ...

1 files changed, 20 insertions, 3 deletions

diff --git a/include/asm-mips/delay.h b/include/asm-mips/delay.h
index fab32131e9b..b0bccd2c4ed 100644
--- a/include/asm-mips/delay.h
+++ b/include/asm-mips/delay.h
@@ -6,13 +6,16 @@
  * Copyright (C) 1994 by Waldorf Electronics
  * Copyright (C) 1995 - 2000, 01, 03 by Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2007  Maciej W. Rozycki
  */
 #ifndef _ASM_DELAY_H
 #define _ASM_DELAY_H
 
 #include <linux/param.h>
 #include <linux/smp.h>
+
 #include <asm/compiler.h>
+#include <asm/war.h>
 
 static inline void __delay(unsigned long loops)
 {
@@ -25,7 +28,7 @@ static inline void __delay(unsigned long loops)
 		"	.set	reorder					\n"
 		: "=r" (loops)
 		: "0" (loops));
-	else if (sizeof(long) == 8)
+	else if (sizeof(long) == 8 && !DADDI_WAR)
 		__asm__ __volatile__ (
 		"	.set	noreorder				\n"
 		"	.align	3					\n"
@@ -34,6 +37,15 @@ static inline void __delay(unsigned long loops)
 		"	.set	reorder					\n"
 		: "=r" (loops)
 		: "0" (loops));
+	else if (sizeof(long) == 8 && DADDI_WAR)
+		__asm__ __volatile__ (
+		"	.set	noreorder				\n"
+		"	.align	3					\n"
+		"1:	bnez	%0, 1b					\n"
+		"	dsubu	%0, %2					\n"
+		"	.set	reorder					\n"
+		: "=r" (loops)
+		: "0" (loops), "r" (1));
 }
 
 
@@ -50,7 +62,7 @@ static inline void __delay(unsigned long loops)
 
 static inline void __udelay(unsigned long usecs, unsigned long lpj)
 {
-	unsigned long lo;
+	unsigned long hi, lo;
 
 	/*
 	 * The rates of 128 is rounded wrongly by the catchall case
@@ -70,11 +82,16 @@ static inline void __udelay(unsigned long usecs, unsigned long lpj)
 		: "=h" (usecs), "=l" (lo)
 		: "r" (usecs), "r" (lpj)
 		: GCC_REG_ACCUM);
-	else if (sizeof(long) == 8)
+	else if (sizeof(long) == 8 && !R4000_WAR)
 		__asm__("dmultu\t%2, %3"
 		: "=h" (usecs), "=l" (lo)
 		: "r" (usecs), "r" (lpj)
 		: GCC_REG_ACCUM);
+	else if (sizeof(long) == 8 && R4000_WAR)
+		__asm__("dmultu\t%3, %4\n\tmfhi\t%0"
+		: "=r" (usecs), "=h" (hi), "=l" (lo)
+		: "r" (usecs), "r" (lpj)
+		: GCC_REG_ACCUM);
 
 	__delay(usecs);
 }