The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/xen/xenvar.h

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    1 /*-
    2  * Copyright (c) 2008 Kip Macy
    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  * $FreeBSD: releng/9.0/sys/i386/include/xen/xenvar.h 222041 2011-05-17 22:15:53Z attilio $
   27  */
   28 
   29 #ifndef XENVAR_H_
   30 #define XENVAR_H_
   31 
   32 #include <machine/xen/features.h>
   33 
   34 #if defined(XEN)
   35 
   36 #define XBOOTUP 0x1
   37 #define XPMAP   0x2
   38 extern int xendebug_flags;
   39 #ifndef NOXENDEBUG
   40 #define XENPRINTF printk
   41 #else
   42 #define XENPRINTF printf
   43 #endif
   44 
   45 extern  xen_pfn_t *xen_phys_machine;
   46 extern  xen_pfn_t *xen_pfn_to_mfn_frame_list[16];
   47 extern  xen_pfn_t *xen_pfn_to_mfn_frame_list_list;
   48 
   49 #if 0
   50 #define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
   51 #define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
   52 #define TRACE_DEBUG(argflags, _f, _a...) \
   53 if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
   54 #else
   55 #define TRACE_ENTER
   56 #define TRACE_EXIT
   57 #define TRACE_DEBUG(argflags, _f, _a...)
   58 #endif
   59 
   60 extern xen_pfn_t *xen_machine_phys;
   61 /* Xen starts physical pages after the 4MB ISA hole -
   62  * FreeBSD doesn't
   63  */
   64 
   65 
   66 #undef ADD_ISA_HOLE /* XXX */
   67 
   68 #ifdef ADD_ISA_HOLE
   69 #define ISA_INDEX_OFFSET 1024 
   70 #define ISA_PDR_OFFSET 1
   71 #else
   72 #define ISA_INDEX_OFFSET 0
   73 #define ISA_PDR_OFFSET 0
   74 #endif
   75 
   76 
   77 #define PFNTOMFN(i) (xen_phys_machine[(i)])
   78 #define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
   79 
   80 #define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
   81 #define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
   82 
   83 #define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
   84 #define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
   85 
   86 #define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
   87 #define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
   88 
   89 #define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
   90 #define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
   91 
   92 
   93 void xpq_init(void);
   94 
   95 #define BITS_PER_LONG 32
   96 #define NR_CPUS      MAX_VIRT_CPUS
   97 
   98 #define BITS_TO_LONGS(bits) \
   99         (((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
  100 #define DECLARE_BITMAP(name,bits) \
  101         unsigned long name[BITS_TO_LONGS(bits)]
  102 
  103 int  xen_create_contiguous_region(vm_page_t pages, int npages);
  104 
  105 void  xen_destroy_contiguous_region(void * addr, int npages);
  106 
  107 #elif defined(XENHVM)
  108 
  109 #define PFNTOMFN(pa)    (pa)
  110 #define MFNTOPFN(ma)    (ma)
  111 
  112 #endif /* !XEN && !XENHVM */
  113 
  114 #endif

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