Remove deprecated 023-mips_delay_gcc4.4.0.patch and add new delay fix for MIPS

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16397 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 32 insertions, 152 deletions

diff --git a/target/linux/generic-2.6/patches-2.6.30/023-mips_delay_gcc4.4.0.patch b/target/linux/generic-2.6/patches-2.6.30/023-mips_delay_gcc4.4.0.patch
deleted file mode 100644
index 619ee1721..000000000
--- a/target/linux/generic-2.6/patches-2.6.30/023-mips_delay_gcc4.4.0.patch
+++ /dev/null
@@ -1,152 +0,0 @@
-From: Wu Zhangjin <wuzj@lemote.com>
-
-the gcc 4.4 support for MIPS mostly refer to this PATCH:
-http://www.nabble.com/-PATCH--MIPS:-Handle-removal-of-%27h%27-constraint-in-GCC-4.4-td22192768.html
-but have been tuned a little.
-
-because only gcc 4.4 have loongson-specific support, so, we need to
-choose the suitable -march argument for gcc <= 4.3 and gcc >= 4.4, and
-we also need to consider use -march=loongson2e and -march=loongson2f for
-loongson2e and loongson2f respectively. this is handled by adding two
-new kernel options: CPU_LOONGSON2E and CPU_LOONGSON2F(thanks for the
-solutin provided by ZhangLe).
-
-I have tested it on FuLoong(2f) in 32bit and 64bit with gcc-4.4 and
-gcc-4.3. so, basically, it works.
-
-Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
----
- arch/mips/Makefile               |    9 +++++-
- arch/mips/include/asm/compiler.h |   10 ++++++
- arch/mips/include/asm/delay.h    |   58 +++++++++++++++++++++++++------------
- 3 files changed, 57 insertions(+), 20 deletions(-)
-
---- a/arch/mips/Makefile
-+++ b/arch/mips/Makefile
-@@ -120,7 +120,14 @@ cflags-$(CONFIG_CPU_R4300)	+= -march=r43
- cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
- cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
- cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
--cflags-$(CONFIG_CPU_LOONGSON2)	+= -march=r4600 -Wa,--trap
-+
-+# only gcc >= 4.4 have the loongson-specific support
-+cflags-$(CONFIG_CPU_LOONGSON2)	+= -Wa,--trap
-+cflags-$(CONFIG_CPU_LOONGSON2E)	+= $(shell if [ $(call cc-version) -lt 0440 ] ; then \
-+	echo $(call cc-option,-march=r4600); else echo $(call cc-option,-march=loongson2e); fi ;)
-+cflags-$(CONFIG_CPU_LOONGSON2F)	+= $(shell if [ $(call cc-version) -lt 0440 ] ; then \
-+	echo $(call cc-option,-march=r4600); else echo $(call cc-option,-march=loongson2f); fi ;)
-+
- cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
- 			-Wa,-mips32 -Wa,--trap
- cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
---- a/arch/mips/include/asm/compiler.h
-+++ b/arch/mips/include/asm/compiler.h
-@@ -1,5 +1,6 @@
- /*
-  * Copyright (C) 2004, 2007  Maciej W. Rozycki
-+ * Copyright (C) 2009  Wu Zhangjin, wuzj@lemote.com
-  *
-  * This file is subject to the terms and conditions of the GNU General Public
-  * License.  See the file "COPYING" in the main directory of this archive
-@@ -16,4 +17,13 @@
- #define GCC_REG_ACCUM "accum"
- #endif
- 
-+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
-+#define GCC_NO_H_CONSTRAINT
-+#ifdef CONFIG_64BIT
-+typedef unsigned int uintx_t __attribute__((mode(TI)));
-+#else
-+typedef u64 uintx_t;
-+#endif
-+#endif
-+
- #endif /* _ASM_COMPILER_H */
---- a/arch/mips/include/asm/delay.h
-+++ b/arch/mips/include/asm/delay.h
-@@ -7,6 +7,7 @@
-  * Copyright (C) 1995 - 2000, 01, 03 by Ralf Baechle
-  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
-  * Copyright (C) 2007  Maciej W. Rozycki
-+ * Copyright (C) 2009  Wu Zhangjin, wuzj@lemote.com
-  */
- #ifndef _ASM_DELAY_H
- #define _ASM_DELAY_H
-@@ -48,6 +49,43 @@ static inline void __delay(unsigned long
- 		: "0" (loops), "r" (1));
- }
- 
-+/*
-+ * convert usecs to loops
-+ *
-+ * handle removal of 'h' constraint in GCC 4.4
-+ */
-+
-+#ifndef GCC_NO_H_CONSTRAINT	/* gcc <= 4.3 */
-+static inline unsigned long __usecs_to_loops(unsigned long usecs,
-+		unsigned long lpj)
-+{
-+	unsigned long hi, lo;
-+
-+	if (sizeof(long) == 4)
-+		__asm__("multu\t%2, %3"
-+		: "=h" (usecs), "=l" (lo)
-+		: "r" (usecs), "r" (lpj)
-+		: GCC_REG_ACCUM);
-+	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);
-+
-+	return usecs;
-+}
-+#else	/* GCC_NO_H_CONSTRAINT, gcc >= 4.4 */
-+static inline unsigned long __usecs_to_loops(unsigned long usecs,
-+		unsigned long lpj)
-+{
-+	return ((uintx_t)usecs * lpj) >> BITS_PER_LONG;
-+}
-+#endif
- 
- /*
-  * Division by multiplication: you don't have to worry about
-@@ -62,8 +100,6 @@ static inline void __delay(unsigned long
- 
- static inline void __udelay(unsigned long usecs, unsigned long lpj)
- {
--	unsigned long hi, lo;
--
- 	/*
- 	 * The rates of 128 is rounded wrongly by the catchall case
- 	 * for 64-bit.  Excessive precission?  Probably ...
-@@ -77,23 +113,7 @@ static inline void __udelay(unsigned lon
- 	                           0x80000000ULL) >> 32);
- #endif
- 
--	if (sizeof(long) == 4)
--		__asm__("multu\t%2, %3"
--		: "=h" (usecs), "=l" (lo)
--		: "r" (usecs), "r" (lpj)
--		: GCC_REG_ACCUM);
--	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);
-+	__delay(__usecs_to_loops(usecs, lpj));
- }
- 
- #define __udelay_val cpu_data[raw_smp_processor_id()].udelay_val
diff --git a/target/linux/generic-2.6/patches-2.6.30/024-mips_delay.patch b/target/linux/generic-2.6/patches-2.6.30/024-mips_delay.patch
new file mode 100644
index 000000000..284f34610
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.30/024-mips_delay.patch
@@ -0,0 +1,32 @@
+From: Atsushi Nemoto <nemoto@toshiba-tops.co.jp>
+Subject: [PATCH] fix __ndelay build error and add 'ull' suffix for 32-bit kernel
+
+Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
+---
+ arch/mips/lib/delay.c |    4 ++--
+ 1 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/arch/mips/lib/delay.c b/arch/mips/lib/delay.c
+index f69c6b5..6b3b1de 100644
+--- a/arch/mips/lib/delay.c
++++ b/arch/mips/lib/delay.c
+@@ -43,7 +43,7 @@ void __udelay(unsigned long us)
+ {
+        unsigned int lpj = current_cpu_data.udelay_val;
+ 
+-       __delay((us * 0x000010c7 * HZ * lpj) >> 32);
++       __delay((us * 0x000010c7ull * HZ * lpj) >> 32);
+ }
+ EXPORT_SYMBOL(__udelay);
+ 
+@@ -51,6 +51,6 @@ void __ndelay(unsigned long ns)
+ {
+        unsigned int lpj = current_cpu_data.udelay_val;
+ 
+-       __delay((us * 0x00000005 * HZ * lpj) >> 32);
++       __delay((ns * 0x00000005ull * HZ * lpj) >> 32);
+ }
+ EXPORT_SYMBOL(__ndelay);
+
+
+