pcpu.h

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    1 /*-
    2  * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  *      from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
   27  * $FreeBSD$
   28  */
   29 
   30 #ifndef _MACHINE_PCPU_H_
   31 #define _MACHINE_PCPU_H_
   32 
   33 #include <machine/asmacros.h>
   34 #include <machine/frame.h>
   35 #include <machine/intr_machdep.h>
   36 
   37 #define ALT_STACK_SIZE  128
   38 
   39 struct pmap;
   40 
   41 /*
   42  * Inside the kernel, the globally reserved register g7 is used to
   43  * point at the globaldata structure.
   44  */
   45 #define PCPU_MD_FIELDS                                                  \
   46         struct  intr_request pc_irpool[IR_FREE];                        \
   47         struct  intr_request *pc_irhead;                                \
   48         struct  intr_request **pc_irtail;                               \
   49         struct  intr_request *pc_irfree;                                \
   50         struct  pmap *pc_curpmap;                                       \
   51         vm_offset_t pc_addr;                                            \
   52         vm_offset_t *pc_mondo_data;                                     \
   53         vm_offset_t *pc_cpu_list;                                       \
   54         vm_offset_t *pc_cpu_q;                                          \
   55         vm_offset_t *pc_dev_q;                                          \
   56         vm_offset_t *pc_rq;                                             \
   57         vm_offset_t *pc_nrq;                                            \
   58         vm_paddr_t pc_mondo_data_ra;                                    \
   59         vm_paddr_t pc_cpu_list_ra;                                      \
   60         vm_paddr_t pc_cpu_q_ra;                                         \
   61         uint64_t pc_cpu_q_size;                                         \
   62         vm_paddr_t pc_dev_q_ra;                                         \
   63         uint64_t pc_dev_q_size;                                         \
   64         vm_paddr_t pc_rq_ra;                                            \
   65         uint64_t pc_rq_size;                                            \
   66         vm_paddr_t pc_nrq_ra;                                           \
   67         uint64_t pc_nrq_size;                                           \
   68         u_long  pc_tickref;                                             \
   69         u_long  pc_tickadj;                                             \
   70         struct rwindow pc_kwbuf;                                        \
   71         u_long  pc_kwbuf_sp;                                            \
   72         u_int   pc_kwbuf_full;                                          \
   73         struct rwindow pc_tsbwbuf[2];                                   \
   74         uint16_t pc_cpulist[MAXCPU];                                    \
   75         uint64_t pad[6];
   76 
   77         /* XXX SUN4V_FIXME - as we access the *_ra and *_size fields in quick
   78          * succession we _really_ want them to be L1 cache line size aligned
   79          * and it is quite possible that we want all of ASI_QUEUE fields to
   80          * be L2 cache aligned - they're surrounded by per-cpu data, so there is
   81          * no possibility of false sharing, but this might help in reducing misses
   82          */
   83 
   84 #ifdef _KERNEL
   85 
   86 struct pcpu;
   87 
   88 register struct pcpu *pcpup __asm__(__XSTRING(PCPU_REG));
   89 
   90 #define PCPU_GET(member)        (pcpup->pc_ ## member)
   91 
   92 /*
   93  * XXX The implementation of this operation should be made atomic
   94  * with respect to preemption.
   95  */
   96 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
   97 #define PCPU_INC(member)        PCPU_ADD(member, 1)
   98 #define PCPU_PTR(member)        (&pcpup->pc_ ## member)
   99 #define PCPU_SET(member,value)  (pcpup->pc_ ## member = (value))
  100 
  101 #endif  /* _KERNEL */
  102 
  103 #endif  /* !_MACHINE_PCPU_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/sun4v/include/pcpu.h

FreeBSD/Linux Kernel Cross Reference
sys/sun4v/include/pcpu.h