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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