LXR linux/arch/mips/include/asm/cop2.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 2009 Wind River Systems,
   7 *   written by Ralf Baechle <ralf@linux-mips.org>
   8 */
   9#ifndef __ASM_COP2_H
  10#define __ASM_COP2_H
  11
  12#include <linux/notifier.h>
  13
  14#if defined(CONFIG_CPU_CAVIUM_OCTEON)
  15
  16extern void octeon_cop2_save(struct octeon_cop2_state *);
  17extern void octeon_cop2_restore(struct octeon_cop2_state *);
  18
  19#define cop2_save(r)            octeon_cop2_save(r)
  20#define cop2_restore(r)         octeon_cop2_restore(r)
  21
  22#define cop2_present            1
  23#define cop2_lazy_restore       1
  24
  25#elif defined(CONFIG_CPU_XLP)
  26
  27extern void nlm_cop2_save(struct nlm_cop2_state *);
  28extern void nlm_cop2_restore(struct nlm_cop2_state *);
  29#define cop2_save(r)            nlm_cop2_save(r)
  30#define cop2_restore(r)         nlm_cop2_restore(r)
  31
  32#define cop2_present            1
  33#define cop2_lazy_restore       0
  34
  35#else
  36
  37#define cop2_present            0
  38#define cop2_lazy_restore       0
  39#define cop2_save(r)
  40#define cop2_restore(r)
  41#endif
  42
  43enum cu2_ops {
  44        CU2_EXCEPTION,
  45        CU2_LWC2_OP,
  46        CU2_LDC2_OP,
  47        CU2_SWC2_OP,
  48        CU2_SDC2_OP,
  49};
  50
  51extern int register_cu2_notifier(struct notifier_block *nb);
  52extern int cu2_notifier_call_chain(unsigned long val, void *v);
  53
  54#define cu2_notifier(fn, pri)                                           \
  55({                                                                      \
  56        static struct notifier_block fn##_nb = {                        \
  57                .notifier_call = fn,                                    \
  58                .priority = pri                                         \
  59        };                                                              \
  60                                                                        \
  61        register_cu2_notifier(&fn##_nb);                                \
  62})
  63
  64#endif /* __ASM_COP2_H */
  65