* 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>
*/
__asm__ __volatile__ (#name); \
}
+/*
+ * MIPS R2 instruction hazard barrier. Needs to be called as a subroutine.
+ */
+extern void mips_ihb(void);
+
#endif
ASMMACRO(_ssnop,
_ehb
)
ASMMACRO(irq_enable_hazard,
+ _ehb
)
ASMMACRO(irq_disable_hazard,
_ehb
* processors.
*/
ASMMACRO(mtc0_tlbw_hazard,
- nop
+ nop; nop
)
ASMMACRO(tlbw_use_hazard,
nop; nop; nop
nop; nop; nop
)
ASMMACRO(irq_enable_hazard,
+ _ssnop; _ssnop; _ssnop;
)
ASMMACRO(irq_disable_hazard,
nop; nop; nop
#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 */