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)->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_LOONGSON64) 26 27 #define cop2_present 1 28 #define cop2_lazy_restore 1 29 #define cop2_save(r) do { (void)(r); } while (0) 30 #define cop2_restore(r) do { (void)(r); } while (0) 31 32 #else 33 34 #define cop2_present 0 35 #define cop2_lazy_restore 0 36 #define cop2_save(r) do { (void)(r); } while (0) 37 #define cop2_restore(r) do { (void)(r); } while (0) 38 #endif 39 40 enum cu2_ops { 41 CU2_EXCEPTION, 42 CU2_LWC2_OP, 43 CU2_LDC2_OP, 44 CU2_SWC2_OP, 45 CU2_SDC2_OP, 46 }; 47 48 extern int register_cu2_notifier(struct notifier_block *nb); 49 extern int cu2_notifier_call_chain(unsigned long val, void *v); 50 51 #define cu2_notifier(fn, pri) \ 52 ({ \ 53 static struct notifier_block fn##_nb = { \ 54 .notifier_call = fn, \ 55 .priority = pri \ 56 }; \ 57 \ 58 register_cu2_notifier(&fn##_nb); \ 59 }) 60 61 #endif /* __ASM_COP2_H */ 62