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Diffstat (limited to 'arch/mips/include/asm/cop2.h')
| -rw-r--r-- | arch/mips/include/asm/cop2.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h new file mode 100644 index 0000000000..01b05be23a --- /dev/null +++ b/arch/mips/include/asm/cop2.h @@ -0,0 +1,61 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2009 Wind River Systems, + * written by Ralf Baechle <ralf@linux-mips.org> + */ +#ifndef __ASM_COP2_H +#define __ASM_COP2_H + +#include <linux/notifier.h> + +#if defined(CONFIG_CPU_CAVIUM_OCTEON) + +extern void octeon_cop2_save(struct octeon_cop2_state *); +extern void octeon_cop2_restore(struct octeon_cop2_state *); + +#define cop2_save(r) octeon_cop2_save(&(r)->thread.cp2) +#define cop2_restore(r) octeon_cop2_restore(&(r)->thread.cp2) + +#define cop2_present 1 +#define cop2_lazy_restore 1 + +#elif defined(CONFIG_CPU_LOONGSON64) + +#define cop2_present 1 +#define cop2_lazy_restore 1 +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) + +#else + +#define cop2_present 0 +#define cop2_lazy_restore 0 +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) +#endif + +enum cu2_ops { + CU2_EXCEPTION, + CU2_LWC2_OP, + CU2_LDC2_OP, + CU2_SWC2_OP, + CU2_SDC2_OP, +}; + +extern int register_cu2_notifier(struct notifier_block *nb); +extern int cu2_notifier_call_chain(unsigned long val, void *v); + +#define cu2_notifier(fn, pri) \ +({ \ + static struct notifier_block fn##_nb = { \ + .notifier_call = fn, \ + .priority = pri \ + }; \ + \ + register_cu2_notifier(&fn##_nb); \ +}) + +#endif /* __ASM_COP2_H */ |