1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 2009 Wind River Systems, 7*4882a593Smuzhiyun * written by Ralf Baechle <ralf@linux-mips.org> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef __ASM_COP2_H 10*4882a593Smuzhiyun #define __ASM_COP2_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/notifier.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #if defined(CONFIG_CPU_CAVIUM_OCTEON) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun extern void octeon_cop2_save(struct octeon_cop2_state *); 17*4882a593Smuzhiyun extern void octeon_cop2_restore(struct octeon_cop2_state *); 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #define cop2_save(r) octeon_cop2_save(&(r)->thread.cp2) 20*4882a593Smuzhiyun #define cop2_restore(r) octeon_cop2_restore(&(r)->thread.cp2) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #define cop2_present 1 23*4882a593Smuzhiyun #define cop2_lazy_restore 1 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #elif defined(CONFIG_CPU_XLP) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun extern void nlm_cop2_save(struct nlm_cop2_state *); 28*4882a593Smuzhiyun extern void nlm_cop2_restore(struct nlm_cop2_state *); 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #define cop2_save(r) nlm_cop2_save(&(r)->thread.cp2) 31*4882a593Smuzhiyun #define cop2_restore(r) nlm_cop2_restore(&(r)->thread.cp2) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define cop2_present 1 34*4882a593Smuzhiyun #define cop2_lazy_restore 0 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #elif defined(CONFIG_CPU_LOONGSON64) 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #define cop2_present 1 39*4882a593Smuzhiyun #define cop2_lazy_restore 1 40*4882a593Smuzhiyun #define cop2_save(r) do { (void)(r); } while (0) 41*4882a593Smuzhiyun #define cop2_restore(r) do { (void)(r); } while (0) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #else 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define cop2_present 0 46*4882a593Smuzhiyun #define cop2_lazy_restore 0 47*4882a593Smuzhiyun #define cop2_save(r) do { (void)(r); } while (0) 48*4882a593Smuzhiyun #define cop2_restore(r) do { (void)(r); } while (0) 49*4882a593Smuzhiyun #endif 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun enum cu2_ops { 52*4882a593Smuzhiyun CU2_EXCEPTION, 53*4882a593Smuzhiyun CU2_LWC2_OP, 54*4882a593Smuzhiyun CU2_LDC2_OP, 55*4882a593Smuzhiyun CU2_SWC2_OP, 56*4882a593Smuzhiyun CU2_SDC2_OP, 57*4882a593Smuzhiyun }; 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun extern int register_cu2_notifier(struct notifier_block *nb); 60*4882a593Smuzhiyun extern int cu2_notifier_call_chain(unsigned long val, void *v); 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #define cu2_notifier(fn, pri) \ 63*4882a593Smuzhiyun ({ \ 64*4882a593Smuzhiyun static struct notifier_block fn##_nb = { \ 65*4882a593Smuzhiyun .notifier_call = fn, \ 66*4882a593Smuzhiyun .priority = pri \ 67*4882a593Smuzhiyun }; \ 68*4882a593Smuzhiyun \ 69*4882a593Smuzhiyun register_cu2_notifier(&fn##_nb); \ 70*4882a593Smuzhiyun }) 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun #endif /* __ASM_COP2_H */ 73