/*      $NetBSD: cpu.h,v 1.24 2019/12/04 03:04:52 riastradh Exp $       */

/*
* Copyright (c) 2008-2011 Antti Kantee.  All Rights Reserved.
*
* 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 AUTHOR ``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 AUTHOR 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.
*/

/*
* CPU defitions for a generic arch.  Unfortunately there are some
* MD #ifdefs here.  They are required because of MD inlines and macros.
*/

#ifndef _SYS_RUMP_CPU_H_
#define _SYS_RUMP_CPU_H_

#ifndef _LOCORE

#include <sys/cpu_data.h>
#include <machine/pcb.h>

#include "rump_curlwp.h"

struct cpu_info {
       struct cpu_data ci_data;
       cpuid_t ci_cpuid;
       struct lwp *ci_curlwp;
       struct lwp *ci_onproc;

       struct cpu_info *ci_next;

#ifdef __alpha__
       uint64_t ci_pcc_freq;
#endif

#ifdef __vax__
       int ci_ipimsgs;
#define IPI_SEND_CNCHAR 0
#define IPI_DDB 0
#endif /* __vax__ */

#ifdef __powerpc__
       struct cache_info {
               int dcache_size;
               int dcache_line_size;
               int icache_size;
               int icache_line_size;
       } ci_ci;
#endif /* __powerpc */
};

#ifdef __vax__
static __inline void cpu_handle_ipi(void) {}
#endif /* __vax__ */

#ifdef __powerpc__
void __syncicache(void *, size_t);
#endif /* __powerpc__ */

#define curlwp rump_curlwp_fast()

#define curcpu() (curlwp->l_cpu)
#define cpu_number() (cpu_index(curcpu()))

extern struct cpu_info *rumpcpu_info_list;
#define CPU_INFO_ITERATOR               int __unused
#define CPU_INFO_FOREACH(_cii_, _ci_)   _cii_ = 0, _ci_ = rumpcpu_info_list; \
                                       _ci_ != NULL; _ci_ = _ci_->ci_next
#define CPU_IS_PRIMARY(_ci_)            (_ci_->ci_index == 0)

#define CLKF_USERMODE(framep)   0
#define CLKF_PC(framep)         0
#define CLKF_INTR(framep)       0

#endif /* !_LOCORE */

#endif /* _SYS_RUMP_CPU_H_ */