Remove deprecated 023-mips_delay_gcc4.4.0.patch and add new delay fix for MIPS
SVN-Revision: 16397
This commit is contained in:
Hamish Guthrie
parent
ca16accfbb
commit
1ad8e6fdce
2 changed files with 32 additions and 152 deletions
|
|
@ -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
|
||||
32
target/linux/generic-2.6/patches-2.6.30/024-mips_delay.patch
Normal file
32
target/linux/generic-2.6/patches-2.6.30/024-mips_delay.patch
Normal file
|
|
@ -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);
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in a new issue