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 * $FreeBSD$ 27 */ 28#ifndef XENVAR_H_ 29#define XENVAR_H_ 30#define XBOOTUP 0x1 31#define XPMAP 0x2 32extern int xendebug_flags; 33#ifndef NOXENDEBUG 34#define XENPRINTF printk 35#else 36#define XENPRINTF printf 37#endif 38#include <xen/features.h> 39 40#if 0 41#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__) 42#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__) 43#define TRACE_DEBUG(argflags, _f, _a...) \ 44if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a); 45#else 46#define TRACE_ENTER 47#define TRACE_EXIT 48#define TRACE_DEBUG(argflags, _f, _a...) 49#endif 50 51#ifdef XENHVM 52 53static inline vm_paddr_t 54phystomach(vm_paddr_t pa) 55{ 56 57 return (pa); 58} 59 60static inline vm_paddr_t 61machtophys(vm_paddr_t ma) 62{ 63 64 return (ma); 65} 66 67#define vtomach(va) pmap_kextract((vm_offset_t) (va)) 68#define PFNTOMFN(pa) (pa) 69#define MFNTOPFN(ma) (ma) 70 71#define set_phys_to_machine(pfn, mfn) ((void)0) 72#define phys_to_machine_mapping_valid(pfn) (TRUE) 73#define PT_UPDATES_FLUSH() ((void)0) 74 75#else 76 77extern xen_pfn_t *xen_phys_machine; 78 79 80extern xen_pfn_t *xen_machine_phys; 81/* Xen starts physical pages after the 4MB ISA hole - 82 * FreeBSD doesn't 83 */ 84 85 86#undef ADD_ISA_HOLE /* XXX */ 87 88#ifdef ADD_ISA_HOLE 89#define ISA_INDEX_OFFSET 1024 90#define ISA_PDR_OFFSET 1 91#else 92#define ISA_INDEX_OFFSET 0 93#define ISA_PDR_OFFSET 0 94#endif 95 96 97#define PFNTOMFN(i) (xen_phys_machine[(i)]) 98#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)]) 99 100#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE) 101#define PTOV(x) (((uintptr_t)(x)) + KERNBASE) 102 103#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT) 104#define PFNTOV(x) PTOV((vm_paddr_t)(x) << PAGE_SHIFT) 105 106#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT) 107#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) 108 109#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT) 110#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT) 111 112#endif 113 114void xpq_init(void); 115 116int xen_create_contiguous_region(vm_page_t pages, int npages); 117 118void xen_destroy_contiguous_region(void * addr, int npages); 119 120#endif 121