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authorChris Dearman <chris@mips.com>2007-05-08 16:09:13 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-05-11 14:28:31 +0100
commit0b6249567b4ecf6e9d5a8efcf149f3e7cf788cc0 (patch)
treedfb8d45357a9e8e3ad134f7eec87e7918132410e /include/asm-mips/hazards.h
parentd725cf3818b12a17d78b87a2de19e8eec17126ae (diff)
downloadop-kernel-dev-0b6249567b4ecf6e9d5a8efcf149f3e7cf788cc0.zip
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[MIPS] FPU hazard handling
Move FPU hazard handling to hazards.h and provide proper support for MIPSR2 processors Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/hazards.h')
-rw-r--r--include/asm-mips/hazards.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h
index e50c77e..1542f23 100644
--- a/include/asm-mips/hazards.h
+++ b/include/asm-mips/hazards.h
@@ -178,4 +178,36 @@ ASMMACRO(back_to_back_c0_hazard,
#endif
+
+/* FPU hazards */
+
+#if defined(CONFIG_CPU_SB1)
+ASMMACRO(enable_fpu_hazard,
+ .set push;
+ .set mips64;
+ .set noreorder;
+ _ssnop;
+ bnezl $0,.+4;
+ _ssnop
+ .set pop
+)
+ASMMACRO(disable_fpu_hazard,
+)
+
+#elif defined(CONFIG_CPU_MIPSR2)
+ASMMACRO(enable_fpu_hazard,
+ _ehb
+)
+ASMMACRO(disable_fpu_hazard,
+ _ehb
+)
+#else
+ASMMACRO(enable_fpu_hazard,
+ nop; nop; nop; nop
+)
+ASMMACRO(disable_fpu_hazard,
+ _ehb
+)
+#endif
+
#endif /* _ASM_HAZARDS_H */
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