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

     /*-
      * Copyright (c) 2008 Kip Macy
      * 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 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 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.
     *
     * $FreeBSD: releng/8.2/sys/i386/include/xen/xenvar.h 209061 2010-06-11 19:17:36Z ken $
     */
    
    #ifndef XENVAR_H_
    #define XENVAR_H_
    #define XBOOTUP 0x1
    #define XPMAP   0x2
    extern int xendebug_flags;
    #ifndef NOXENDEBUG
    #define XENPRINTF printk
    #else
    #define XENPRINTF printf
    #endif
    #include <machine/xen/features.h>
    
    extern  xen_pfn_t *xen_phys_machine;
    extern  xen_pfn_t *xen_pfn_to_mfn_frame_list[16];
    extern  xen_pfn_t *xen_pfn_to_mfn_frame_list_list;
    
    #if 0
    #define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
    #define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
    #define TRACE_DEBUG(argflags, _f, _a...) \
    if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
    #else
    #define TRACE_ENTER
    #define TRACE_EXIT
    #define TRACE_DEBUG(argflags, _f, _a...)
    #endif
    
    extern xen_pfn_t *xen_machine_phys;
    /* Xen starts physical pages after the 4MB ISA hole -
     * FreeBSD doesn't
     */
    
    
    #undef ADD_ISA_HOLE /* XXX */
    
    #ifdef ADD_ISA_HOLE
    #define ISA_INDEX_OFFSET 1024 
    #define ISA_PDR_OFFSET 1
    #else
    #define ISA_INDEX_OFFSET 0
    #define ISA_PDR_OFFSET 0
    #endif
    
    
    #define PFNTOMFN(i) (xen_phys_machine[(i)])
    #define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
    
    #define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
    #define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
    
    #define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
    #define PFNTOV(x) PTOV((vm_paddr_t)(x)  << PAGE_SHIFT)
    
    #define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
    #define PFN_UP(x)    (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
    
    #define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
    #define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
    
    
    void xpq_init(void);
    
    #define BITS_PER_LONG 32
    #define NR_CPUS      MAX_VIRT_CPUS
    
    #define BITS_TO_LONGS(bits) \
            (((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
    #define DECLARE_BITMAP(name,bits) \
            unsigned long name[BITS_TO_LONGS(bits)]
    typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } xen_cpumask_t;
    
   int  xen_create_contiguous_region(vm_page_t pages, int npages);
   
   void  xen_destroy_contiguous_region(void * addr, int npages);
   
   #endif

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