1 /* $NetBSD: hypercalls.h,v 1.2 2020/04/25 15:26:16 bouyer Exp $ */ 2 /****************************************************************************** 3 * hypercall.h 4 * 5 * Linux-specific hypervisor handling. 6 * 7 * Copyright (c) 2002-2004, K A Fraser 8 * 9 * 64-bit updates: 10 * Benjamin Liu <benjamin.liu (at) intel.com> 11 * Jun Nakajima <jun.nakajima (at) intel.com> 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License version 2 15 * as published by the Free Software Foundation; or, when distributed 16 * separately from the Linux kernel or incorporated into other 17 * software packages, subject to the following license: 18 * 19 * Permission is hereby granted, free of charge, to any person obtaining a copy 20 * of this source file (the "Software"), to deal in the Software without 21 * restriction, including without limitation the rights to use, copy, modify, 22 * merge, publish, distribute, sublicense, and/or sell copies of the Software, 23 * and to permit persons to whom the Software is furnished to do so, subject to 24 * the following conditions: 25 * 26 * The above copyright notice and this permission notice shall be included in 27 * all copies or substantial portions of the Software. 28 * 29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 32 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 33 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 34 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 35 * IN THE SOFTWARE. 36 */ 37 38 #ifndef __HYPERCALL_H__ 39 #define __HYPERCALL_H__ 40 41 #define __STR(x) #x 42 #define STR(x) __STR(x) 43 44 #define HYPERCALL_STR(name) \ 45 "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)" 46 47 #define _hypercall0(type, name) \ 48 ({ \ 49 long __res; \ 50 asm volatile ( \ 51 HYPERCALL_STR(name) \ 52 : "=a" (__res) \ 53 : \ 54 : "memory" ); \ 55 (type)__res; \ 56 }) 57 58 #define _hypercall1(type, name, a1) \ 59 ({ \ 60 long __res, __ign1; \ 61 asm volatile ( \ 62 HYPERCALL_STR(name) \ 63 : "=a" (__res), "=D" (__ign1) \ 64 : "1" ((long)(a1)) \ 65 : "memory" ); \ 66 (type)__res; \ 67 }) 68 69 #define _hypercall2(type, name, a1, a2) \ 70 ({ \ 71 long __res, __ign1, __ign2; \ 72 asm volatile ( \ 73 HYPERCALL_STR(name) \ 74 : "=a" (__res), "=D" (__ign1), "=S" (__ign2) \ 75 : "1" ((long)(a1)), "2" ((long)(a2)) \ 76 : "memory" ); \ 77 (type)__res; \ 78 }) 79 80 #define _hypercall3(type, name, a1, a2, a3) \ 81 ({ \ 82 long __res, __ign1, __ign2, __ign3; \ 83 asm volatile ( \ 84 HYPERCALL_STR(name) \ 85 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \ 86 "=d" (__ign3) \ 87 : "1" ((long)(a1)), "2" ((long)(a2)), \ 88 "3" ((long)(a3)) \ 89 : "memory" ); \ 90 (type)__res; \ 91 }) 92 93 #define _hypercall4(type, name, a1, a2, a3, a4) \ 94 ({ \ 95 long __res, __ign1, __ign2, __ign3; \ 96 asm volatile ( \ 97 "movq %7,%%r10; " \ 98 HYPERCALL_STR(name) \ 99 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \ 100 "=d" (__ign3) \ 101 : "1" ((long)(a1)), "2" ((long)(a2)), \ 102 "3" ((long)(a3)), "g" ((long)(a4)) \ 103 : "memory", "r10" ); \ 104 (type)__res; \ 105 }) 106 107 #define _hypercall5(type, name, a1, a2, a3, a4, a5) \ 108 ({ \ 109 long __res, __ign1, __ign2, __ign3; \ 110 asm volatile ( \ 111 "movq %7,%%r10; movq %8,%%r8; " \ 112 HYPERCALL_STR(name) \ 113 : "=a" (__res), "=D" (__ign1), "=S" (__ign2), \ 114 "=d" (__ign3) \ 115 : "1" ((long)(a1)), "2" ((long)(a2)), \ 116 "3" ((long)(a3)), "g" ((long)(a4)), \ 117 "g" ((long)(a5)) \ 118 : "memory", "r10", "r8" ); \ 119 (type)__res; \ 120 }) 121 122 static inline int 123 HYPERVISOR_set_trap_table( 124 trap_info_t *table) 125 { 126 return _hypercall1(int, set_trap_table, table); 127 } 128 129 static inline int 130 HYPERVISOR_mmu_update( 131 mmu_update_t *req, int count, int *success_count, domid_t domid) 132 { 133 return _hypercall4(int, mmu_update, req, count, success_count, domid); 134 } 135 136 static inline int 137 HYPERVISOR_mmuext_op( 138 struct mmuext_op *op, int count, int *success_count, domid_t domid) 139 { 140 return _hypercall4(int, mmuext_op, op, count, success_count, domid); 141 } 142 143 static inline int 144 HYPERVISOR_set_gdt( 145 unsigned long *frame_list, int entries) 146 { 147 return _hypercall2(int, set_gdt, frame_list, entries); 148 } 149 150 static inline int 151 HYPERVISOR_stack_switch( 152 unsigned long ss, unsigned long esp) 153 { 154 return _hypercall2(int, stack_switch, ss, esp); 155 } 156 157 static inline int 158 HYPERVISOR_set_callbacks( 159 unsigned long event_address, unsigned long failsafe_address, 160 unsigned long syscall_address) 161 { 162 return _hypercall3(int, set_callbacks, 163 event_address, failsafe_address, syscall_address); 164 } 165 166 static inline int 167 HYPERVISOR_fpu_taskswitch( 168 int set) 169 { 170 return _hypercall1(int, fpu_taskswitch, set); 171 } 172 173 static inline int 174 HYPERVISOR_sched_op_compat( 175 int cmd, unsigned long arg) 176 { 177 return _hypercall2(int, sched_op_compat, cmd, arg); 178 } 179 180 static inline int 181 HYPERVISOR_sched_op( 182 int cmd, void *arg) 183 { 184 return _hypercall2(int, sched_op, cmd, arg); 185 } 186 187 static inline long 188 HYPERVISOR_set_timer_op( 189 u64 timeout) 190 { 191 return _hypercall1(long, set_timer_op, timeout); 192 } 193 194 static inline int 195 HYPERVISOR_platform_op( 196 struct xen_platform_op *platform_op) 197 { 198 platform_op->interface_version = XENPF_INTERFACE_VERSION; 199 return _hypercall1(int, platform_op, platform_op); 200 } 201 202 static inline int 203 HYPERVISOR_set_debugreg( 204 int reg, unsigned long value) 205 { 206 return _hypercall2(int, set_debugreg, reg, value); 207 } 208 209 static inline unsigned long 210 HYPERVISOR_get_debugreg( 211 int reg) 212 { 213 return _hypercall1(unsigned long, get_debugreg, reg); 214 } 215 216 static inline int 217 HYPERVISOR_update_descriptor( 218 unsigned long ma, unsigned long word) 219 { 220 return _hypercall2(int, update_descriptor, ma, word); 221 } 222 223 static inline int 224 HYPERVISOR_memory_op( 225 unsigned int cmd, void *arg) 226 { 227 return _hypercall2(int, memory_op, cmd, arg); 228 } 229 230 static inline int 231 HYPERVISOR_multicall( 232 multicall_entry_t *call_list, int nr_calls) 233 { 234 return _hypercall2(int, multicall, call_list, nr_calls); 235 } 236 237 static inline int 238 HYPERVISOR_update_va_mapping( 239 unsigned long va, unsigned long new_val, unsigned long flags) 240 { 241 return _hypercall3(int, update_va_mapping, va, new_val, flags); 242 } 243 244 static inline int 245 HYPERVISOR_event_channel_op(evtchn_op_t *op) 246 { 247 KASSERT(op != NULL); 248 #if __XEN_INTERFACE_VERSION__ < 0x00030202 249 return _hypercall1(int, event_channel_op, op); 250 #else 251 return _hypercall2(int, event_channel_op, op->cmd, &op->u); 252 #endif 253 } 254 255 static inline int 256 HYPERVISOR_acm_op( 257 int cmd, void *arg) 258 { 259 return _hypercall2(int, acm_op, cmd, arg); 260 } 261 262 static inline int 263 HYPERVISOR_xen_version( 264 int cmd, void *arg) 265 { 266 return _hypercall2(int, xen_version, cmd, arg); 267 } 268 269 static inline int 270 HYPERVISOR_console_io( 271 int cmd, int count, char *str) 272 { 273 return _hypercall3(int, console_io, cmd, count, str); 274 } 275 276 static inline int 277 HYPERVISOR_physdev_op(int cmd, void *op) 278 { 279 return _hypercall2(int, physdev_op, cmd, op); 280 } 281 282 static inline int 283 HYPERVISOR_grant_table_op( 284 unsigned int cmd, void *uop, unsigned int count) 285 { 286 return _hypercall3(int, grant_table_op, cmd, uop, count); 287 } 288 289 static inline int 290 HYPERVISOR_update_va_mapping_otherdomain( 291 unsigned long va, unsigned long new_val, unsigned long flags, 292 domid_t domid) 293 { 294 return _hypercall4(int, update_va_mapping_otherdomain, va, 295 new_val, flags, domid); 296 } 297 298 static inline int 299 HYPERVISOR_vm_assist( 300 unsigned int cmd, unsigned int type) 301 { 302 return _hypercall2(int, vm_assist, cmd, type); 303 } 304 305 static inline int 306 HYPERVISOR_vcpu_op( 307 int cmd, int vcpuid, void *extra_args) 308 { 309 return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args); 310 } 311 312 static inline int 313 HYPERVISOR_set_segment_base( 314 int reg, unsigned long value) 315 { 316 return _hypercall2(int, set_segment_base, reg, value); 317 } 318 319 static inline int 320 HYPERVISOR_suspend( 321 unsigned long srec) 322 { 323 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 324 325 struct sched_shutdown shutdown_reason = { 326 .reason = SHUTDOWN_suspend, 327 }; 328 329 return _hypercall3(int, sched_op, SCHEDOP_shutdown, 330 &shutdown_reason, srec); 331 #else 332 return _hypercall3(int, sched_op, SCHEDOP_shutdown, 333 SHUTDOWN_suspend, srec); 334 #endif 335 } 336 337 static inline long 338 HYPERVISOR_yield( 339 void) 340 { 341 return _hypercall2(int, sched_op, SCHEDOP_yield, 0); 342 } 343 344 static inline long 345 HYPERVISOR_block( 346 void) 347 { 348 return _hypercall2(int, sched_op, SCHEDOP_block, 0); 349 } 350 351 static inline long 352 HYPERVISOR_shutdown( 353 void) 354 { 355 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 356 357 struct sched_shutdown shutdown_reason = { 358 .reason = SHUTDOWN_poweroff, 359 }; 360 361 return _hypercall2(int, sched_op, SCHEDOP_shutdown, 362 &shutdown_reason); 363 #else 364 - return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_poweroff); 365 #endif 366 } 367 368 static inline long 369 HYPERVISOR_crash( 370 void) 371 { 372 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 373 374 struct sched_shutdown shutdown_reason = { 375 .reason = SHUTDOWN_crash, 376 }; 377 378 return _hypercall2(int, sched_op, SCHEDOP_shutdown, 379 &shutdown_reason); 380 #else 381 return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_crash); 382 #endif 383 } 384 385 static inline long 386 HYPERVISOR_reboot( 387 void) 388 { 389 #if __XEN_INTERFACE_VERSION__ >= 0x00030201 390 391 struct sched_shutdown shutdown_reason = { 392 .reason = SHUTDOWN_reboot, 393 }; 394 395 return _hypercall2(int, sched_op, SCHEDOP_shutdown, 396 &shutdown_reason); 397 #else 398 return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_reboot); 399 #endif 400 } 401 402 static inline int 403 HYPERVISOR_nmi_op( 404 unsigned long op, void *arg) 405 { 406 return _hypercall2(int, nmi_op, op, arg); 407 } 408 409 static inline long 410 HYPERVISOR_hvm_op( 411 int op, void *arg) 412 { 413 return _hypercall2(long, hvm_op, op, arg); 414 } 415 416 static inline int 417 HYPERVISOR_callback_op( 418 int cmd, void *arg) 419 { 420 return _hypercall2(int, callback_op, cmd, arg); 421 } 422 423 static inline int 424 HYPERVISOR_xenoprof_op( 425 int op, void *arg) 426 { 427 return _hypercall2(int, xenoprof_op, op, arg); 428 } 429 430 static inline int 431 HYPERVISOR_kexec_op( 432 unsigned long op, void *args) 433 { 434 return _hypercall2(int, kexec_op, op, args); 435 } 436 437 #if __XEN_INTERFACE_VERSION__ < 0x00030204 438 static inline int 439 HYPERVISOR_dom0_op( 440 dom0_op_t *dom0_op) 441 { 442 dom0_op->interface_version = DOM0_INTERFACE_VERSION; 443 return _hypercall1(int, dom0_op, dom0_op); 444 } 445 #endif /* __XEN_INTERFACE_VERSION__ */ 446 447 #include <xen/include/public/arch-x86/xen-mca.h> 448 449 static inline int 450 HYPERVISOR_machine_check(struct xen_mc *mc) 451 { 452 mc->interface_version = XEN_MCA_INTERFACE_VERSION; 453 return _hypercall1(int, mca, mc); 454 } 455 456 static inline int 457 HYPERVISOR_sysctl(void *sysctl) 458 { 459 return _hypercall1(int, sysctl, sysctl); 460 } 461 462 #endif /* __HYPERCALL_H__ */ 463
Indexes created Mon Sep 22 13:09:51 GMT 2025