5649d37c2b
Add COP2 register state structure and functions for Netlogic XLP. The RX and TX buffers and status registers are to be saved. Since the registers are 64-bit, do the implementation in inline assembly which works on both 32-bit and 64-bit kernels. 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/5413/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
65 lines
1.5 KiB
C
65 lines
1.5 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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#elif defined(CONFIG_CPU_XLP)
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extern void nlm_cop2_save(struct nlm_cop2_state *);
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extern void nlm_cop2_restore(struct nlm_cop2_state *);
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#define cop2_save(r) nlm_cop2_save(r)
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#define cop2_restore(r) nlm_cop2_restore(r)
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#define cop2_present 1
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#define cop2_lazy_restore 0
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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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