152 lines
3.9 KiB
C
152 lines
3.9 KiB
C
/* $NetBSD: cpu.h,v 1.4 2015/04/01 21:55:03 matt Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RISCV_CPU_H_
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#define _RISCV_CPU_H_
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#if defined(_KERNEL) || defined(_KMEMUSER)
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struct clockframe {
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uintptr_t cf_pc;
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uint32_t cf_sr;
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int cf_intr_depth;
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};
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#define CLKF_USERMODE(cf) (((cf)->cf_sr & 1) == 0)
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#define CLKF_PC(cf) ((cf)->cf_pc)
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#define CLKF_INTR(cf) ((cf)->cf_intr_depth > 0)
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#include <sys/cpu_data.h>
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#include <sys/device_if.h>
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#include <sys/evcnt.h>
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#include <sys/intr.h>
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struct cpu_info {
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struct cpu_data ci_data;
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device_t ci_dev;
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cpuid_t ci_cpuid;
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struct lwp *ci_curlwp;
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struct lwp *ci_softlwps[SOFTINT_COUNT];
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struct trapframe *ci_ddb_regs;
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uint64_t ci_lastintr;
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int ci_mtx_oldspl;
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int ci_mtx_count;
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int ci_want_resched;
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int ci_cpl;
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u_int ci_softints;
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volatile u_int ci_intr_depth;
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tlb_asid_t ci_pmap_asid_cur;
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#if 0
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union pmap_pdetab *ci_pmap_user_pdetab;
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#ifdef _LP64
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union pmap_pdetab *ci_pmap_user_pde0tab;
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#endif
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#endif
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struct evcnt ci_ev_fpu_saves;
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struct evcnt ci_ev_fpu_loads;
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struct evcnt ci_ev_fpu_reenables;
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};
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#endif /* _KERNEL || _KMEMUSER */
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#ifdef _KERNEL
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extern struct cpu_info cpu_info_store;
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// This is also in <sys/lwp.h>
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struct lwp;
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static inline struct cpu_info *lwp_getcpu(struct lwp *);
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register struct lwp *riscv_curlwp __asm("tp");
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#define curlwp riscv_curlwp
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#define curcpu() lwp_getcpu(curlwp)
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static inline cpuid_t
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cpu_number(void)
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{
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#ifdef MULTIPROCESSOR
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return curcpu()->ci_cpuid;
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#else
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return 0;
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#endif
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}
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void cpu_set_curpri(int);
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void cpu_proc_fork(struct proc *, struct proc *);
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void cpu_signotify(struct lwp *);
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void cpu_need_proftick(struct lwp *l);
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void cpu_boot_secondary_processors(void);
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#define CPU_INFO_ITERATOR cpuid_t
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#ifdef MULTIPROCESSOR
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#define CPU_INFO_FOREACH(cii, ci) \
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(cii) = 0; ((ci) = cpu_infos[cii]) != NULL; (cii)++
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#else
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#define CPU_INFO_FOREACH(cii, ci) \
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(cii) = 0, (ci) = curcpu(); (cii) == 0; (cii)++
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#endif
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#define CPU_INFO_CURPMAP(ci) (curlwp->l_proc->p_vmspace->vm_map.pmap)
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static inline void
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cpu_dosoftints(void)
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{
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extern void dosoftints(void);
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struct cpu_info * const ci = curcpu();
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if (ci->ci_intr_depth == 0
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&& (ci->ci_data.cpu_softints >> ci->ci_cpl) > 0)
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dosoftints();
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}
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static inline bool
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cpu_intr_p(void)
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{
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return curcpu()->ci_intr_depth > 0;
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}
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#define LWP_PC(l) cpu_lwp_pc(l)
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vaddr_t cpu_lwp_pc(struct lwp *);
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static inline void
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cpu_idle(void)
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{
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}
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#endif /* _KERNEL */
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#endif /* _RISCV_CPU_H_ */
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