hypervisor.h revision 1.33
1 /* $NetBSD: hypervisor.h,v 1.33 2011/09/20 00:12:23 jym Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 /* 29 * 30 * Communication to/from hypervisor. 31 * 32 * Copyright (c) 2002-2004, K A Fraser 33 * 34 * Permission is hereby granted, free of charge, to any person obtaining a copy 35 * of this source file (the "Software"), to deal in the Software without 36 * restriction, including without limitation the rights to use, copy, modify, 37 * merge, publish, distribute, sublicense, and/or sell copies of the Software, 38 * and to permit persons to whom the Software is furnished to do so, subject to 39 * the following conditions: 40 * 41 * The above copyright notice and this permission notice shall be included in 42 * all copies or substantial portions of the Software. 43 * 44 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 45 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 46 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 47 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 48 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 49 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 50 * IN THE SOFTWARE. 51 */ 52 53 54 #ifndef _XEN_HYPERVISOR_H_ 55 #define _XEN_HYPERVISOR_H_ 56 57 #include "opt_xen.h" 58 59 60 struct hypervisor_attach_args { 61 const char *haa_busname; 62 }; 63 64 struct xencons_attach_args { 65 const char *xa_device; 66 }; 67 68 struct xen_npx_attach_args { 69 const char *xa_device; 70 }; 71 72 73 #define u8 uint8_t 74 #define u16 uint16_t 75 #define u32 uint32_t 76 #define u64 uint64_t 77 #define s8 int8_t 78 #define s16 int16_t 79 #define s32 int32_t 80 #define s64 int64_t 81 82 #include <xen/xen3-public/xen.h> 83 #include <xen/xen3-public/sched.h> 84 #include <xen/xen3-public/platform.h> 85 #if __XEN_INTERFACE_VERSION__ < 0x00030204 86 #include <xen/xen3-public/dom0_ops.h> 87 #endif 88 #include <xen/xen3-public/event_channel.h> 89 #include <xen/xen3-public/physdev.h> 90 #include <xen/xen3-public/memory.h> 91 #include <xen/xen3-public/io/netif.h> 92 #include <xen/xen3-public/io/blkif.h> 93 94 #include <machine/cpu.h> 95 #include <machine/hypercalls.h> 96 97 #undef u8 98 #undef u16 99 #undef u32 100 #undef u64 101 #undef s8 102 #undef s16 103 #undef s32 104 #undef s64 105 106 107 108 /* 109 * a placeholder for the start of day information passed up from the hypervisor 110 */ 111 union start_info_union 112 { 113 start_info_t start_info; 114 char padding[512]; 115 }; 116 extern union start_info_union start_info_union; 117 #define xen_start_info (start_info_union.start_info) 118 119 /* For use in guest OSes. */ 120 extern volatile shared_info_t *HYPERVISOR_shared_info; 121 122 123 /* Structural guest handles introduced in 0x00030201. */ 124 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 125 #define xenguest_handle(hnd) (hnd).p 126 #else 127 #define xenguest_handle(hnd) hnd 128 #endif 129 130 /* hypervisor.c */ 131 struct intrframe; 132 void do_hypervisor_callback(struct intrframe *regs); 133 void hypervisor_enable_event(unsigned int); 134 135 /* hypervisor_machdep.c */ 136 void hypervisor_unmask_event(unsigned int); 137 void hypervisor_mask_event(unsigned int); 138 void hypervisor_clear_event(unsigned int); 139 void hypervisor_enable_ipl(unsigned int); 140 void hypervisor_set_ipending(struct cpu_info *, 141 uint32_t, int, int); 142 void hypervisor_machdep_attach(void); 143 void hypervisor_machdep_resume(void); 144 145 /* 146 * Force a proper event-channel callback from Xen after clearing the 147 * callback mask. We do this in a very simple manner, by making a call 148 * down into Xen. The pending flag will be checked by Xen on return. 149 */ 150 static __inline void hypervisor_force_callback(void) 151 { 152 (void)HYPERVISOR_xen_version(0, (void*)0); 153 } __attribute__((no_instrument_function)) /* used by mcount */ 154 155 static __inline void 156 hypervisor_notify_via_evtchn(unsigned int port) 157 { 158 evtchn_op_t op; 159 160 op.cmd = EVTCHNOP_send; 161 op.u.send.port = port; 162 (void)HYPERVISOR_event_channel_op(&op); 163 } 164 165 #endif /* _XEN_HYPERVISOR_H_ */ 166
Indexes created Tue Sep 23 02:09:52 GMT 2025