2c952e06e4
Move the common code for saving and restoring platform specific COP2 registers to switch_to(). This will make supporting new platforms (like Netlogic XLP) easier. The platform specific COP2 definitions are to be specified in asm/processor.h and in asm/cop2.h. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Cc: linux-mips@linux-mips.org Cc: ddaney.cavm@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/5411/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2009 Wind River Systems,
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* written by Ralf Baechle <ralf@linux-mips.org>
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*/
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#ifndef __ASM_COP2_H
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#define __ASM_COP2_H
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#include <linux/notifier.h>
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#if defined(CONFIG_CPU_CAVIUM_OCTEON)
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extern void octeon_cop2_save(struct octeon_cop2_state *);
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extern void octeon_cop2_restore(struct octeon_cop2_state *);
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#define cop2_save(r) octeon_cop2_save(r)
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#define cop2_restore(r) octeon_cop2_restore(r)
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#define cop2_present 1
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#define cop2_lazy_restore 1
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#else
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#define cop2_present 0
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#define cop2_lazy_restore 0
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#define cop2_save(r)
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#define cop2_restore(r)
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#endif
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enum cu2_ops {
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CU2_EXCEPTION,
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CU2_LWC2_OP,
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CU2_LDC2_OP,
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CU2_SWC2_OP,
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CU2_SDC2_OP,
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};
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extern int register_cu2_notifier(struct notifier_block *nb);
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extern int cu2_notifier_call_chain(unsigned long val, void *v);
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#define cu2_notifier(fn, pri) \
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({ \
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static struct notifier_block fn##_nb = { \
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.notifier_call = fn, \
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.priority = pri \
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}; \
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\
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register_cu2_notifier(&fn##_nb); \
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})
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#endif /* __ASM_COP2_H */
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