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_LOONGSON3) 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