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
  16 extern void octeon_cop2_save(struct octeon_cop2_state *);
  17 extern 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
  27 extern void nlm_cop2_save(struct nlm_cop2_state *);
  28 extern 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
  43 enum cu2_ops {
  44         CU2_EXCEPTION,
  45         CU2_LWC2_OP,
  46         CU2_LDC2_OP,
  47         CU2_SWC2_OP,
  48         CU2_SDC2_OP,
  49 };
  50
  51 extern int register_cu2_notifier(struct notifier_block *nb);
  52 extern 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 */