mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-06-02 23:28:07 +03:00
Alex Rønne Petersen
242 lines
6.3 KiB
C
Vendored
242 lines
6.3 KiB
C
Vendored
/* $NetBSD: cpu.h,v 1.16 2024/08/04 08:16:25 skrll Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2014 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Matt Thomas of 3am Software Foundry.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _RISCV_CPU_H_
|
|
#define _RISCV_CPU_H_
|
|
|
|
#if defined(_KERNEL) || defined(_KMEMUSER)
|
|
|
|
struct clockframe {
|
|
vaddr_t cf_epc;
|
|
register_t cf_status;
|
|
int cf_intr_depth;
|
|
};
|
|
|
|
#define CLKF_USERMODE(cf) (((cf)->cf_status & SR_SPP) == 0)
|
|
#define CLKF_PC(cf) ((cf)->cf_epc)
|
|
#define CLKF_INTR(cf) ((cf)->cf_intr_depth > 1)
|
|
|
|
#include <sys/cpu_data.h>
|
|
#include <sys/device_if.h>
|
|
#include <sys/evcnt.h>
|
|
#include <sys/intr.h>
|
|
|
|
struct cpu_info {
|
|
struct cpu_data ci_data;
|
|
device_t ci_dev;
|
|
cpuid_t ci_cpuid;
|
|
struct lwp *ci_curlwp;
|
|
struct lwp *ci_onproc; /* current user LWP / kthread */
|
|
struct lwp *ci_softlwps[SOFTINT_COUNT];
|
|
struct trapframe *ci_ddb_regs;
|
|
|
|
uint64_t ci_lastintr;
|
|
uint64_t ci_lastintr_scheduled;
|
|
struct evcnt ci_ev_timer;
|
|
struct evcnt ci_ev_timer_missed;
|
|
|
|
u_long ci_cpu_freq; /* CPU frequency */
|
|
int ci_mtx_oldspl;
|
|
int ci_mtx_count;
|
|
int ci_cpl;
|
|
volatile u_int ci_intr_depth;
|
|
|
|
int ci_want_resched __aligned(COHERENCY_UNIT);
|
|
u_int ci_softints;
|
|
|
|
tlb_asid_t ci_pmap_asid_cur;
|
|
|
|
union pmap_segtab *ci_pmap_user_segtab;
|
|
#ifdef _LP64
|
|
union pmap_segtab *ci_pmap_user_seg0tab;
|
|
#endif
|
|
|
|
struct evcnt ci_ev_fpu_saves;
|
|
struct evcnt ci_ev_fpu_loads;
|
|
struct evcnt ci_ev_fpu_reenables;
|
|
|
|
struct pmap_tlb_info *ci_tlb_info;
|
|
|
|
#ifdef MULTIPROCESSOR
|
|
volatile u_long ci_flags;
|
|
#define CPUF_PRIMARY __BIT(0) /* CPU is primary CPU */
|
|
#define CPUF_PRESENT __BIT(1) /* CPU is present */
|
|
#define CPUF_RUNNING __BIT(2) /* CPU is running */
|
|
#define CPUF_PAUSED __BIT(3) /* CPU is paused */
|
|
|
|
void *ci_intcsoftc;
|
|
volatile u_long ci_request_ipis;
|
|
/* bitmask of IPIs requested */
|
|
u_long ci_active_ipis; /* bitmask of IPIs being serviced */
|
|
|
|
struct evcnt ci_evcnt_all_ipis; /* aggregated IPI counter */
|
|
struct evcnt ci_evcnt_per_ipi[NIPIS]; /* individual IPI counters */
|
|
struct evcnt ci_evcnt_synci_onproc_rqst;
|
|
struct evcnt ci_evcnt_synci_deferred_rqst;
|
|
struct evcnt ci_evcnt_synci_ipi_rqst;
|
|
|
|
kcpuset_t *ci_shootdowncpus;
|
|
kcpuset_t *ci_multicastcpus;
|
|
kcpuset_t *ci_watchcpus;
|
|
kcpuset_t *ci_ddbcpus;
|
|
#endif
|
|
|
|
#if defined(GPROF) && defined(MULTIPROCESSOR)
|
|
struct gmonparam *ci_gmon; /* MI per-cpu GPROF */
|
|
#endif
|
|
};
|
|
|
|
#endif /* _KERNEL || _KMEMUSER */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
extern struct cpu_info cpu_info_store[];
|
|
extern cpuid_t cpu_bphartid;
|
|
extern u_int cpu_hartindex[];
|
|
|
|
#ifdef MULTIPROCESSOR
|
|
|
|
void cpu_hatch(struct cpu_info *, unsigned long);
|
|
|
|
void cpu_init_secondary_processor(u_int);
|
|
void cpu_boot_secondary_processors(void);
|
|
void cpu_mpstart(void);
|
|
bool cpu_hatched_p(u_int);
|
|
|
|
void cpu_clr_mbox(u_int);
|
|
void cpu_set_hatched(u_int);
|
|
|
|
|
|
void cpu_halt(void);
|
|
void cpu_halt_others(void);
|
|
bool cpu_is_paused(cpuid_t);
|
|
void cpu_pause(void);
|
|
void cpu_pause_others(void);
|
|
void cpu_resume(cpuid_t);
|
|
void cpu_resume_others(void);
|
|
void cpu_debug_dump(void);
|
|
|
|
extern kcpuset_t *cpus_running;
|
|
extern kcpuset_t *cpus_hatched;
|
|
extern kcpuset_t *cpus_paused;
|
|
extern kcpuset_t *cpus_resumed;
|
|
extern kcpuset_t *cpus_halted;
|
|
|
|
/*
|
|
* definitions of cpu-dependent requirements
|
|
* referenced in generic code
|
|
*/
|
|
|
|
/*
|
|
* Send an inter-processor interrupt to each other CPU (excludes curcpu())
|
|
*/
|
|
void cpu_broadcast_ipi(int);
|
|
|
|
/*
|
|
* Send an inter-processor interrupt to CPUs in kcpuset (excludes curcpu())
|
|
*/
|
|
void cpu_multicast_ipi(const kcpuset_t *, int);
|
|
|
|
/*
|
|
* Send an inter-processor interrupt to another CPU.
|
|
*/
|
|
int cpu_send_ipi(struct cpu_info *, int);
|
|
|
|
#endif
|
|
|
|
struct lwp;
|
|
static inline struct cpu_info *lwp_getcpu(struct lwp *);
|
|
|
|
register struct lwp *riscv_curlwp __asm("tp");
|
|
#define curlwp riscv_curlwp
|
|
#define curcpu() lwp_getcpu(curlwp)
|
|
#define curpcb ((struct pcb *)lwp_getpcb(curlwp))
|
|
|
|
static inline cpuid_t
|
|
cpu_number(void)
|
|
{
|
|
#ifdef MULTIPROCESSOR
|
|
return curcpu()->ci_cpuid;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
void cpu_proc_fork(struct proc *, struct proc *);
|
|
void cpu_signotify(struct lwp *);
|
|
void cpu_need_proftick(struct lwp *l);
|
|
void cpu_boot_secondary_processors(void);
|
|
|
|
#define CPU_INFO_ITERATOR cpuid_t
|
|
#ifdef MULTIPROCESSOR
|
|
#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY)
|
|
#define CPU_INFO_FOREACH(cii, ci) \
|
|
cii = 0, ci = &cpu_info_store[0]; \
|
|
ci != NULL; \
|
|
cii++, ncpu ? (ci = cpu_infos[cii]) \
|
|
: (ci = NULL)
|
|
#else
|
|
#define CPU_IS_PRIMARY(ci) true
|
|
#define CPU_INFO_FOREACH(cii, ci) \
|
|
(cii) = 0, (ci) = curcpu(); (cii) == 0; (cii)++
|
|
#endif
|
|
|
|
#define CPU_INFO_CURPMAP(ci) (curlwp->l_proc->p_vmspace->vm_map.pmap)
|
|
|
|
static inline void
|
|
cpu_dosoftints(void)
|
|
{
|
|
extern void dosoftints(void);
|
|
struct cpu_info * const ci = curcpu();
|
|
if (ci->ci_intr_depth == 0
|
|
&& (ci->ci_data.cpu_softints >> ci->ci_cpl) > 0)
|
|
dosoftints();
|
|
}
|
|
|
|
static inline bool
|
|
cpu_intr_p(void)
|
|
{
|
|
return curcpu()->ci_intr_depth > 0;
|
|
}
|
|
|
|
#define LWP_PC(l) cpu_lwp_pc(l)
|
|
|
|
vaddr_t cpu_lwp_pc(struct lwp *);
|
|
|
|
static inline void
|
|
cpu_idle(void)
|
|
{
|
|
asm volatile("wfi" ::: "memory");
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _RISCV_CPU_H_ */ |