hypervisor.h revision 1.54
1 /* $NetBSD: hypervisor.h,v 1.54 2022/05/25 14:35:15 bouyer 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 #include "isa.h" 59 #include "pci.h" 60 61 struct cpu_info; 62 63 int xen_hvm_init(void); 64 int xen_hvm_init_cpu(struct cpu_info *); 65 void xen_mainbus_attach(device_t, device_t, void *); 66 67 struct hypervisor_attach_args { 68 const char *haa_busname; 69 }; 70 71 struct xencons_attach_args { 72 const char *xa_device; 73 }; 74 75 struct xen_npx_attach_args { 76 const char *xa_device; 77 }; 78 79 80 #define u8 uint8_t 81 #define u16 uint16_t 82 #define u32 uint32_t 83 #define u64 uint64_t 84 #define s8 int8_t 85 #define s16 int16_t 86 #define s32 int32_t 87 #define s64 int64_t 88 89 #include <sys/atomic.h> 90 91 #include <xen/include/public/xen.h> 92 #include <xen/include/public/sched.h> 93 #include <xen/include/public/platform.h> 94 #if __XEN_INTERFACE_VERSION__ < 0x00030204 95 #include <xen/include/public/dom0_ops.h> 96 #endif 97 #include <xen/include/public/event_channel.h> 98 #include <xen/include/public/physdev.h> 99 #include <xen/include/public/memory.h> 100 #include <xen/include/public/io/netif.h> 101 #include <xen/include/public/io/blkif.h> 102 #include <xen/include/public/arch-x86/hvm/start_info.h> 103 104 #if __XEN_INTERFACE_VERSION < 0x00030208 105 /* Undo namespace damage from xen/include/public/io/ring.h 106 * The proper fix is to get upstream to stop assuming that all OSs use 107 * mb(), rmb(), wmb(). 108 */ 109 #undef xen_mb 110 #undef xen_rmb 111 #undef xen_wmb 112 113 #define xen_mb() membar_sync() 114 #define xen_rmb() membar_producer() 115 #define xen_wmb() membar_consumer() 116 #endif /* __XEN_INTERFACE_VERSION */ 117 118 #include <machine/xen/hypercalls.h> 119 120 #undef u8 121 #undef u16 122 #undef u32 123 #undef u64 124 #undef s8 125 #undef s16 126 #undef s32 127 #undef s64 128 129 130 131 /* 132 * a placeholder for the start of day information passed up from the hypervisor 133 */ 134 union start_info_union 135 { 136 start_info_t start_info; 137 char padding[512]; 138 }; 139 extern union start_info_union start_info_union; 140 #define xen_start_info (start_info_union.start_info) 141 142 extern struct hvm_start_info *hvm_start_info; 143 144 /* For use in guest OSes. */ 145 extern volatile shared_info_t *HYPERVISOR_shared_info; 146 147 /* console */ 148 extern volatile struct xencons_interface *xencons_interface; 149 150 151 /* Structural guest handles introduced in 0x00030201. */ 152 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 153 #define xenguest_handle(hnd) (hnd).p 154 #else 155 #define xenguest_handle(hnd) hnd 156 #endif 157 158 /* hypervisor.c */ 159 struct intrframe; 160 struct cpu_info; 161 void do_hypervisor_callback(struct intrframe *regs); 162 #if defined(XENPV) && (NPCI > 0 || NISA > 0) 163 void hypervisor_prime_pirq_event(int, unsigned int); 164 void hypervisor_ack_pirq_event(unsigned int); 165 #endif /* XENPV && ( NPCI > 0 || NISA > 0 ) */ 166 167 extern int xen_version; 168 #define XEN_MAJOR(x) (((x) & 0xffff0000) >> 16) 169 #define XEN_MINOR(x) ((x) & 0x0000ffff) 170 171 /* 172 * Does the hypervisor we're running on support an api 173 * call at the requested version number ? 174 */ 175 #define XEN_VERSION_SUPPORTED(major, minor) \ 176 (XEN_MAJOR(xen_version) > (major) || \ 177 (XEN_MAJOR(xen_version) == (major) && \ 178 XEN_MINOR(xen_version) >= (minor))) 179 180 /* hypervisor_machdep.c */ 181 void hypervisor_send_event(struct cpu_info *, unsigned int); 182 void hypervisor_unmask_event(unsigned int); 183 void hypervisor_mask_event(unsigned int); 184 void hypervisor_clear_event(unsigned int); 185 void hypervisor_enable_sir(unsigned int); 186 void hypervisor_set_ipending(uint32_t, int, int); 187 void hypervisor_machdep_attach(void); 188 void hypervisor_machdep_resume(void); 189 190 /* 191 * Force a proper event-channel callback from Xen after clearing the 192 * callback mask. We do this in a very simple manner, by making a call 193 * down into Xen. The pending flag will be checked by Xen on return. 194 */ 195 static __inline void hypervisor_force_callback(void) 196 { 197 (void)HYPERVISOR_xen_version(0, (void*)0); 198 } __attribute__((no_instrument_function)) /* used by mcount */ 199 200 static __inline void 201 hypervisor_notify_via_evtchn(unsigned int port) 202 { 203 evtchn_op_t op; 204 205 op.cmd = EVTCHNOP_send; 206 op.u.send.port = port; 207 (void)HYPERVISOR_event_channel_op(&op); 208 } 209 210 void xen_init_ksyms(void); 211 void xen_map_vcpu(struct cpu_info *); 212 213 #endif /* _XEN_HYPERVISOR_H_ */ 214
Indexes created Mon Sep 22 21:09:42 GMT 2025