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)->thread.cp2)
  20#define cop2_restore(r)         octeon_cop2_restore(&(r)->thread.cp2)
  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
  30#define cop2_save(r)            nlm_cop2_save(&(r)->thread.cp2)
  31#define cop2_restore(r)         nlm_cop2_restore(&(r)->thread.cp2)
  32
  33#define cop2_present            1
  34#define cop2_lazy_restore       0
  35
  36#elif defined(CONFIG_CPU_LOONGSON64)
  37
  38#define cop2_present            1
  39#define cop2_lazy_restore       1
  40#define cop2_save(r)            do { (void)(r); } while (0)
  41#define cop2_restore(r)         do { (void)(r); } while (0)
  42
  43#else
  44
  45#define cop2_present            0
  46#define cop2_lazy_restore       0
  47#define cop2_save(r)            do { (void)(r); } while (0)
  48#define cop2_restore(r)         do { (void)(r); } while (0)
  49#endif
  50
  51enum cu2_ops {
  52        CU2_EXCEPTION,
  53        CU2_LWC2_OP,
  54        CU2_LDC2_OP,
  55        CU2_SWC2_OP,
  56        CU2_SDC2_OP,
  57};
  58
  59extern int register_cu2_notifier(struct notifier_block *nb);
  60extern int cu2_notifier_call_chain(unsigned long val, void *v);
  61
  62#define cu2_notifier(fn, pri)                                           \
  63({                                                                      \
  64        static struct notifier_block fn##_nb = {                        \
  65                .notifier_call = fn,                                    \
  66                .priority = pri                                         \
  67        };                                                              \
  68                                                                        \
  69        register_cu2_notifier(&fn##_nb);                                \
  70})
  71
  72#endif /* __ASM_COP2_H */
  73