X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-mips%2Fhazards.h;h=6a5fa32f615bc24e63ed4278267ce3160185c5e5;hb=7616ee95f27a04fd5a6434e9ef4a82cec4b2807c;hp=e50c77e69cb5c11c9ef99a9253102d89d047e62f;hpb=e049d1ca3094f3d1d94617f456a9961202f96e3a;p=linux-2.6

diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h
index e50c77e69c..6a5fa32f61 100644
--- a/include/asm-mips/hazards.h
+++ b/include/asm-mips/hazards.h
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2003, 2004 Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2003, 04, 07 Ralf Baechle <ralf@linux-mips.org>
  * Copyright (C) MIPS Technologies, Inc.
  *   written by Ralf Baechle <ralf@linux-mips.org>
  */
@@ -23,6 +23,11 @@ static inline void name(void)						\
 	__asm__ __volatile__ (#name);					\
 }
 
+/*
+ * MIPS R2 instruction hazard barrier.   Needs to be called as a subroutine.
+ */
+extern void mips_ihb(void);
+
 #endif
 
 ASMMACRO(_ssnop,
@@ -167,6 +172,7 @@ ASMMACRO(tlb_probe_hazard,
 	 nop; nop; nop
 	)
 ASMMACRO(irq_enable_hazard,
+	 _ssnop; _ssnop; _ssnop;
 	)
 ASMMACRO(irq_disable_hazard,
 	nop; nop; nop
@@ -178,4 +184,36 @@ 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 */