1 /* $NetBSD: cpu.h,v 1.2 2018/04/19 21:50:07 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _OR1K_CPU_H_ 33 #define _OR1K_CPU_H_ 34 35 #if defined(_KERNEL) || defined(_KMEMUSER) 36 struct clockframe { 37 uintptr_t cf_pc; 38 uint32_t cf_sr; 39 int cf_intr_depth; 40 }; 41 42 #define CLKF_USERMODE(cf) (((cf)->cf_sr & 1) == 0) 43 #define CLKF_PC(cf) ((cf)->cf_pc) 44 #define CLKF_INTR(cf) ((cf)->cf_intr_depth > 0) 45 46 #include <sys/cpu_data.h> 47 #include <sys/device_if.h> 48 #include <sys/intr.h> 49 50 struct cpu_info { 51 struct cpu_data ci_data; 52 device_t ci_dev; 53 cpuid_t ci_cpuid; 54 struct lwp *ci_curlwp; 55 struct lwp *ci_softlwps[SOFTINT_COUNT]; 56 57 uint64_t ci_lastintr; 58 59 int ci_mtx_oldspl; 60 int ci_mtx_count; 61 62 int ci_want_resched; 63 int ci_cpl; 64 u_int ci_softints; 65 volatile u_int ci_intr_depth; 66 }; 67 68 register struct lwp *or1k_curlwp __asm("r10"); 69 #define curlwp or1k_curlwp 70 71 static __inline struct cpu_info * 72 curcpu(void) 73 { 74 return curlwp->l_cpu; 75 } 76 77 static __inline cpuid_t 78 cpu_number(void) 79 { 80 #ifdef MULTIPROCESSOR 81 return curcpu()->ci_cpuid; 82 #else 83 return 0; 84 #endif 85 } 86 87 void cpu_set_curpri(int); 88 void cpu_proc_fork(struct proc *, struct proc *); 89 void cpu_signotify(struct lwp *); 90 void cpu_need_proftick(struct lwp *l); 91 void cpu_boot_secondary_processors(void); 92 93 #define CPU_INFO_ITERATOR cpuid_t 94 #ifdef MULTIPROCESSOR 95 #define CPU_INFO_FOREACH(cii, ci) \ 96 (cii) = 0; ((ci) = cpu_infos[cii]) != NULL; (cii)++ 97 #else 98 #define CPU_INFO_FOREACH(cii, ci) \ 99 (cii) = 0; (cii) == 0 && (ci) = curcpu(); (cii)++ 100 #endif 101 102 static __inline void 103 cpu_dosoftints(void) 104 { 105 extern void dosoftints(void); 106 struct cpu_info * const ci = curcpu(); 107 if (ci->ci_intr_depth == 0 108 && (ci->ci_data.cpu_softints >> ci->ci_cpl) > 0) 109 dosoftints(); 110 } 111 112 static __inline bool 113 cpu_intr_p(void) 114 { 115 return curcpu()->ci_intr_depth > 0; 116 } 117 118 #endif /* _KERNEL || _KMEMUSER */ 119 120 #endif /* _OR1K_CPU_H_ */ 121