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_XLP) 26 27 extern void nlm_cop2_save(struct nlm_cop2_state *); 28 extern 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 51 enum cu2_ops { 52 CU2_EXCEPTION, 53 CU2_LWC2_OP, 54 CU2_LDC2_OP, 55 CU2_SWC2_OP, 56 CU2_SDC2_OP, 57 }; 58 59 extern int register_cu2_notifier(struct notifier_block *nb); 60 extern 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
