pcpu.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
    5  * Copyright (c) Peter Wemm <peter@netplex.com.au>
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb
   30  * $FreeBSD$
   31  */
   32 
   33 #ifndef _MACHINE_PCPU_H_
   34 #define _MACHINE_PCPU_H_
   35 
   36 #include <machine/cpufunc.h>
   37 #include <machine/pte.h>
   38 
   39 #define PCPU_MD_COMMON_FIELDS                                           \
   40         pd_entry_t      *pc_segbase;            /* curthread segbase */ \
   41         struct  pmap    *pc_curpmap;            /* pmap of curthread */ \
   42         u_int32_t       pc_next_asid;           /* next ASID to alloc */ \
   43         u_int32_t       pc_asid_generation;     /* current ASID generation */ \
   44         u_int           pc_pending_ipis;        /* IPIs pending to this CPU */ \
   45         struct  pcpu    *pc_self;               /* globally-uniqe self pointer */
   46 
   47 #ifdef  __mips_n64
   48 #define PCPU_MD_MIPS64_FIELDS                                           \
   49         PCPU_MD_COMMON_FIELDS                                           \
   50         char            __pad[245]
   51 #else
   52 #define PCPU_MD_MIPS32_FIELDS                                           \
   53         PCPU_MD_COMMON_FIELDS                                           \
   54         pt_entry_t      *pc_cmap1_ptep;         /* PTE for copy window 1 KVA */ \
   55         pt_entry_t      *pc_cmap2_ptep;         /* PTE for copy window 2 KVA */ \
   56         vm_offset_t     pc_cmap1_addr;          /* KVA page for copy window 1 */ \
   57         vm_offset_t     pc_cmap2_addr;          /* KVA page for copy window 2 */ \
   58         vm_offset_t     pc_qmap_addr;           /* KVA page for temporary mappings */ \
   59         pt_entry_t      *pc_qmap_ptep;          /* PTE for temporary mapping KVA */ \
   60         char            __pad[97]
   61 #endif
   62 
   63 #ifdef  __mips_n64
   64 #define PCPU_MD_FIELDS  PCPU_MD_MIPS64_FIELDS
   65 #else
   66 #define PCPU_MD_FIELDS  PCPU_MD_MIPS32_FIELDS
   67 #endif
   68 
   69 #ifdef _KERNEL
   70 
   71 extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
   72 #define PCPU_ADDR(cpu)          (struct pcpu *)(pcpu_space[(cpu)])
   73 
   74 extern struct pcpu *pcpup;
   75 #define PCPUP   pcpup
   76 
   77 /*
   78  * Since we use a wired TLB entry to map the same VA to a different
   79  * physical page for each CPU, get_pcpu() must use the pc_self
   80  * field to obtain a globally-unique pointer.
   81  */
   82 #define get_pcpu()              (PCPUP->pc_self)
   83 
   84 #define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value))
   85 #define PCPU_GET(member)        (PCPUP->pc_ ## member)
   86 #define PCPU_INC(member)        PCPU_ADD(member, 1)
   87 #define PCPU_PTR(member)        (&PCPUP->pc_ ## member)
   88 #define PCPU_SET(member,value)  (PCPUP->pc_ ## member = (value))
   89 #define PCPU_LAZY_INC(member)   (++PCPUP->pc_ ## member)
   90 
   91 #ifdef SMP
   92 /*
   93  * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'.
   94  */
   95 void    mips_pcpu_tlb_init(struct pcpu *pcpu);
   96 #endif
   97 
   98 #endif  /* _KERNEL */
   99 
  100 #endif  /* !_MACHINE_PCPU_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/mips/include/pcpu.h

FreeBSD/Linux Kernel Cross Reference
sys/mips/include/pcpu.h