1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * definition for kernel virtual machines on s390 4 * 5 * Copyright IBM Corp. 2008, 2018 6 * 7 * Author(s): Carsten Otte <cotte@de.ibm.com> 8 */ 9 10 11 #ifndef ASM_KVM_HOST_H 12 #define ASM_KVM_HOST_H 13 14 #include <linux/types.h> 15 #include <linux/hrtimer.h> 16 #include <linux/interrupt.h> 17 #include <linux/kvm_types.h> 18 #include <linux/kvm_host.h> 19 #include <linux/kvm.h> 20 #include <linux/seqlock.h> 21 #include <linux/module.h> 22 #include <asm/debug.h> 23 #include <asm/cpu.h> 24 #include <asm/fpu/api.h> 25 #include <asm/isc.h> 26 #include <asm/guarded_storage.h> 27 28 #define KVM_S390_BSCA_CPU_SLOTS 64 29 #define KVM_S390_ESCA_CPU_SLOTS 248 30 #define KVM_MAX_VCPUS 255 31 #define KVM_USER_MEM_SLOTS 32 32 33 /* 34 * These seem to be used for allocating ->chip in the routing table, which we 35 * don't use. 1 is as small as we can get to reduce the needed memory. If we 36 * need to look at ->chip later on, we'll need to revisit this. 37 */ 38 #define KVM_NR_IRQCHIPS 1 39 #define KVM_IRQCHIP_NUM_PINS 1 40 #define KVM_HALT_POLL_NS_DEFAULT 50000 41 42 /* s390-specific vcpu->requests bit members */ 43 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0) 44 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1) 45 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2) 46 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3) 47 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4) 48 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5) 49 50 #define SIGP_CTRL_C 0x80 51 #define SIGP_CTRL_SCN_MASK 0x3f 52 53 union bsca_sigp_ctrl { 54 __u8 value; 55 struct { 56 __u8 c : 1; 57 __u8 r : 1; 58 __u8 scn : 6; 59 }; 60 }; 61 62 union esca_sigp_ctrl { 63 __u16 value; 64 struct { 65 __u8 c : 1; 66 __u8 reserved: 7; 67 __u8 scn; 68 }; 69 }; 70 71 struct esca_entry { 72 union esca_sigp_ctrl sigp_ctrl; 73 __u16 reserved1[3]; 74 __u64 sda; 75 __u64 reserved2[6]; 76 }; 77 78 struct bsca_entry { 79 __u8 reserved0; 80 union bsca_sigp_ctrl sigp_ctrl; 81 __u16 reserved[3]; 82 __u64 sda; 83 __u64 reserved2[2]; 84 }; 85 86 union ipte_control { 87 unsigned long val; 88 struct { 89 unsigned long k : 1; 90 unsigned long kh : 31; 91 unsigned long kg : 32; 92 }; 93 }; 94 95 struct bsca_block { 96 union ipte_control ipte_control; 97 __u64 reserved[5]; 98 __u64 mcn; 99 __u64 reserved2; 100 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 101 }; 102 103 struct esca_block { 104 union ipte_control ipte_control; 105 __u64 reserved1[7]; 106 __u64 mcn[4]; 107 __u64 reserved2[20]; 108 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 109 }; 110 111 /* 112 * This struct is used to store some machine check info from lowcore 113 * for machine checks that happen while the guest is running. 114 * This info in host's lowcore might be overwritten by a second machine 115 * check from host when host is in the machine check's high-level handling. 116 * The size is 24 bytes. 117 */ 118 struct mcck_volatile_info { 119 __u64 mcic; 120 __u64 failing_storage_address; 121 __u32 ext_damage_code; 122 __u32 reserved; 123 }; 124 125 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 126 CR0_MEASUREMENT_ALERT_SUBMASK) 127 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 128 CR14_EXTERNAL_DAMAGE_SUBMASK) 129 130 #define SIDAD_SIZE_MASK 0xff 131 #define sida_origin(sie_block) \ 132 ((sie_block)->sidad & PAGE_MASK) 133 #define sida_size(sie_block) \ 134 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE) 135 136 #define CPUSTAT_STOPPED 0x80000000 137 #define CPUSTAT_WAIT 0x10000000 138 #define CPUSTAT_ECALL_PEND 0x08000000 139 #define CPUSTAT_STOP_INT 0x04000000 140 #define CPUSTAT_IO_INT 0x02000000 141 #define CPUSTAT_EXT_INT 0x01000000 142 #define CPUSTAT_RUNNING 0x00800000 143 #define CPUSTAT_RETAINED 0x00400000 144 #define CPUSTAT_TIMING_SUB 0x00020000 145 #define CPUSTAT_SIE_SUB 0x00010000 146 #define CPUSTAT_RRF 0x00008000 147 #define CPUSTAT_SLSV 0x00004000 148 #define CPUSTAT_SLSR 0x00002000 149 #define CPUSTAT_ZARCH 0x00000800 150 #define CPUSTAT_MCDS 0x00000100 151 #define CPUSTAT_KSS 0x00000200 152 #define CPUSTAT_SM 0x00000080 153 #define CPUSTAT_IBS 0x00000040 154 #define CPUSTAT_GED2 0x00000010 155 #define CPUSTAT_G 0x00000008 156 #define CPUSTAT_GED 0x00000004 157 #define CPUSTAT_J 0x00000002 158 #define CPUSTAT_P 0x00000001 159 160 struct kvm_s390_sie_block { 161 atomic_t cpuflags; /* 0x0000 */ 162 __u32 : 1; /* 0x0004 */ 163 __u32 prefix : 18; 164 __u32 : 1; 165 __u32 ibc : 12; 166 __u8 reserved08[4]; /* 0x0008 */ 167 #define PROG_IN_SIE (1<<0) 168 __u32 prog0c; /* 0x000c */ 169 union { 170 __u8 reserved10[16]; /* 0x0010 */ 171 struct { 172 __u64 pv_handle_cpu; 173 __u64 pv_handle_config; 174 }; 175 }; 176 #define PROG_BLOCK_SIE (1<<0) 177 #define PROG_REQUEST (1<<1) 178 atomic_t prog20; /* 0x0020 */ 179 __u8 reserved24[4]; /* 0x0024 */ 180 __u64 cputm; /* 0x0028 */ 181 __u64 ckc; /* 0x0030 */ 182 __u64 epoch; /* 0x0038 */ 183 __u32 svcc; /* 0x0040 */ 184 #define LCTL_CR0 0x8000 185 #define LCTL_CR6 0x0200 186 #define LCTL_CR9 0x0040 187 #define LCTL_CR10 0x0020 188 #define LCTL_CR11 0x0010 189 #define LCTL_CR14 0x0002 190 __u16 lctl; /* 0x0044 */ 191 __s16 icpua; /* 0x0046 */ 192 #define ICTL_OPEREXC 0x80000000 193 #define ICTL_PINT 0x20000000 194 #define ICTL_LPSW 0x00400000 195 #define ICTL_STCTL 0x00040000 196 #define ICTL_ISKE 0x00004000 197 #define ICTL_SSKE 0x00002000 198 #define ICTL_RRBE 0x00001000 199 #define ICTL_TPROT 0x00000200 200 __u32 ictl; /* 0x0048 */ 201 #define ECA_CEI 0x80000000 202 #define ECA_IB 0x40000000 203 #define ECA_SIGPI 0x10000000 204 #define ECA_MVPGI 0x01000000 205 #define ECA_AIV 0x00200000 206 #define ECA_VX 0x00020000 207 #define ECA_PROTEXCI 0x00002000 208 #define ECA_APIE 0x00000008 209 #define ECA_SII 0x00000001 210 __u32 eca; /* 0x004c */ 211 #define ICPT_INST 0x04 212 #define ICPT_PROGI 0x08 213 #define ICPT_INSTPROGI 0x0C 214 #define ICPT_EXTREQ 0x10 215 #define ICPT_EXTINT 0x14 216 #define ICPT_IOREQ 0x18 217 #define ICPT_WAIT 0x1c 218 #define ICPT_VALIDITY 0x20 219 #define ICPT_STOP 0x28 220 #define ICPT_OPEREXC 0x2C 221 #define ICPT_PARTEXEC 0x38 222 #define ICPT_IOINST 0x40 223 #define ICPT_KSS 0x5c 224 #define ICPT_MCHKREQ 0x60 225 #define ICPT_INT_ENABLE 0x64 226 #define ICPT_PV_INSTR 0x68 227 #define ICPT_PV_NOTIFY 0x6c 228 #define ICPT_PV_PREF 0x70 229 __u8 icptcode; /* 0x0050 */ 230 __u8 icptstatus; /* 0x0051 */ 231 __u16 ihcpu; /* 0x0052 */ 232 __u8 reserved54; /* 0x0054 */ 233 #define IICTL_CODE_NONE 0x00 234 #define IICTL_CODE_MCHK 0x01 235 #define IICTL_CODE_EXT 0x02 236 #define IICTL_CODE_IO 0x03 237 #define IICTL_CODE_RESTART 0x04 238 #define IICTL_CODE_SPECIFICATION 0x10 239 #define IICTL_CODE_OPERAND 0x11 240 __u8 iictl; /* 0x0055 */ 241 __u16 ipa; /* 0x0056 */ 242 __u32 ipb; /* 0x0058 */ 243 __u32 scaoh; /* 0x005c */ 244 #define FPF_BPBC 0x20 245 __u8 fpf; /* 0x0060 */ 246 #define ECB_GS 0x40 247 #define ECB_TE 0x10 248 #define ECB_SRSI 0x04 249 #define ECB_HOSTPROTINT 0x02 250 __u8 ecb; /* 0x0061 */ 251 #define ECB2_CMMA 0x80 252 #define ECB2_IEP 0x20 253 #define ECB2_PFMFI 0x08 254 #define ECB2_ESCA 0x04 255 __u8 ecb2; /* 0x0062 */ 256 #define ECB3_DEA 0x08 257 #define ECB3_AES 0x04 258 #define ECB3_RI 0x01 259 __u8 ecb3; /* 0x0063 */ 260 __u32 scaol; /* 0x0064 */ 261 __u8 sdf; /* 0x0068 */ 262 __u8 epdx; /* 0x0069 */ 263 __u8 cpnc; /* 0x006a */ 264 __u8 reserved6b; /* 0x006b */ 265 __u32 todpr; /* 0x006c */ 266 #define GISA_FORMAT1 0x00000001 267 __u32 gd; /* 0x0070 */ 268 __u8 reserved74[12]; /* 0x0074 */ 269 __u64 mso; /* 0x0080 */ 270 __u64 msl; /* 0x0088 */ 271 psw_t gpsw; /* 0x0090 */ 272 __u64 gg14; /* 0x00a0 */ 273 __u64 gg15; /* 0x00a8 */ 274 __u8 reservedb0[8]; /* 0x00b0 */ 275 #define HPID_KVM 0x4 276 #define HPID_VSIE 0x5 277 __u8 hpid; /* 0x00b8 */ 278 __u8 reservedb9[7]; /* 0x00b9 */ 279 union { 280 struct { 281 __u32 eiparams; /* 0x00c0 */ 282 __u16 extcpuaddr; /* 0x00c4 */ 283 __u16 eic; /* 0x00c6 */ 284 }; 285 __u64 mcic; /* 0x00c0 */ 286 } __packed; 287 __u32 reservedc8; /* 0x00c8 */ 288 union { 289 struct { 290 __u16 pgmilc; /* 0x00cc */ 291 __u16 iprcc; /* 0x00ce */ 292 }; 293 __u32 edc; /* 0x00cc */ 294 } __packed; 295 union { 296 struct { 297 __u32 dxc; /* 0x00d0 */ 298 __u16 mcn; /* 0x00d4 */ 299 __u8 perc; /* 0x00d6 */ 300 __u8 peratmid; /* 0x00d7 */ 301 }; 302 __u64 faddr; /* 0x00d0 */ 303 } __packed; 304 __u64 peraddr; /* 0x00d8 */ 305 __u8 eai; /* 0x00e0 */ 306 __u8 peraid; /* 0x00e1 */ 307 __u8 oai; /* 0x00e2 */ 308 __u8 armid; /* 0x00e3 */ 309 __u8 reservede4[4]; /* 0x00e4 */ 310 union { 311 __u64 tecmc; /* 0x00e8 */ 312 struct { 313 __u16 subchannel_id; /* 0x00e8 */ 314 __u16 subchannel_nr; /* 0x00ea */ 315 __u32 io_int_parm; /* 0x00ec */ 316 __u32 io_int_word; /* 0x00f0 */ 317 }; 318 } __packed; 319 __u8 reservedf4[8]; /* 0x00f4 */ 320 #define CRYCB_FORMAT_MASK 0x00000003 321 #define CRYCB_FORMAT0 0x00000000 322 #define CRYCB_FORMAT1 0x00000001 323 #define CRYCB_FORMAT2 0x00000003 324 __u32 crycbd; /* 0x00fc */ 325 __u64 gcr[16]; /* 0x0100 */ 326 union { 327 __u64 gbea; /* 0x0180 */ 328 __u64 sidad; 329 }; 330 __u8 reserved188[8]; /* 0x0188 */ 331 __u64 sdnxo; /* 0x0190 */ 332 __u8 reserved198[8]; /* 0x0198 */ 333 __u32 fac; /* 0x01a0 */ 334 __u8 reserved1a4[20]; /* 0x01a4 */ 335 __u64 cbrlo; /* 0x01b8 */ 336 __u8 reserved1c0[8]; /* 0x01c0 */ 337 #define ECD_HOSTREGMGMT 0x20000000 338 #define ECD_MEF 0x08000000 339 #define ECD_ETOKENF 0x02000000 340 #define ECD_ECC 0x00200000 341 __u32 ecd; /* 0x01c8 */ 342 __u8 reserved1cc[18]; /* 0x01cc */ 343 __u64 pp; /* 0x01de */ 344 __u8 reserved1e6[2]; /* 0x01e6 */ 345 __u64 itdba; /* 0x01e8 */ 346 __u64 riccbd; /* 0x01f0 */ 347 __u64 gvrd; /* 0x01f8 */ 348 } __packed __aligned(512); 349 350 struct kvm_s390_itdb { 351 __u8 data[256]; 352 }; 353 354 struct sie_page { 355 struct kvm_s390_sie_block sie_block; 356 struct mcck_volatile_info mcck_info; /* 0x0200 */ 357 __u8 reserved218[360]; /* 0x0218 */ 358 __u64 pv_grregs[16]; /* 0x0380 */ 359 __u8 reserved400[512]; /* 0x0400 */ 360 struct kvm_s390_itdb itdb; /* 0x0600 */ 361 __u8 reserved700[2304]; /* 0x0700 */ 362 }; 363 364 struct kvm_vcpu_stat { 365 u64 exit_userspace; 366 u64 exit_null; 367 u64 exit_external_request; 368 u64 exit_io_request; 369 u64 exit_external_interrupt; 370 u64 exit_stop_request; 371 u64 exit_validity; 372 u64 exit_instruction; 373 u64 exit_pei; 374 u64 halt_successful_poll; 375 u64 halt_attempted_poll; 376 u64 halt_poll_invalid; 377 u64 halt_no_poll_steal; 378 u64 halt_wakeup; 379 u64 halt_poll_success_ns; 380 u64 halt_poll_fail_ns; 381 u64 instruction_lctl; 382 u64 instruction_lctlg; 383 u64 instruction_stctl; 384 u64 instruction_stctg; 385 u64 exit_program_interruption; 386 u64 exit_instr_and_program; 387 u64 exit_operation_exception; 388 u64 deliver_ckc; 389 u64 deliver_cputm; 390 u64 deliver_external_call; 391 u64 deliver_emergency_signal; 392 u64 deliver_service_signal; 393 u64 deliver_virtio; 394 u64 deliver_stop_signal; 395 u64 deliver_prefix_signal; 396 u64 deliver_restart_signal; 397 u64 deliver_program; 398 u64 deliver_io; 399 u64 deliver_machine_check; 400 u64 exit_wait_state; 401 u64 inject_ckc; 402 u64 inject_cputm; 403 u64 inject_external_call; 404 u64 inject_emergency_signal; 405 u64 inject_mchk; 406 u64 inject_pfault_init; 407 u64 inject_program; 408 u64 inject_restart; 409 u64 inject_set_prefix; 410 u64 inject_stop_signal; 411 u64 instruction_epsw; 412 u64 instruction_gs; 413 u64 instruction_io_other; 414 u64 instruction_lpsw; 415 u64 instruction_lpswe; 416 u64 instruction_pfmf; 417 u64 instruction_ptff; 418 u64 instruction_sck; 419 u64 instruction_sckpf; 420 u64 instruction_stidp; 421 u64 instruction_spx; 422 u64 instruction_stpx; 423 u64 instruction_stap; 424 u64 instruction_iske; 425 u64 instruction_ri; 426 u64 instruction_rrbe; 427 u64 instruction_sske; 428 u64 instruction_ipte_interlock; 429 u64 instruction_stsi; 430 u64 instruction_stfl; 431 u64 instruction_tb; 432 u64 instruction_tpi; 433 u64 instruction_tprot; 434 u64 instruction_tsch; 435 u64 instruction_sie; 436 u64 instruction_essa; 437 u64 instruction_sthyi; 438 u64 instruction_sigp_sense; 439 u64 instruction_sigp_sense_running; 440 u64 instruction_sigp_external_call; 441 u64 instruction_sigp_emergency; 442 u64 instruction_sigp_cond_emergency; 443 u64 instruction_sigp_start; 444 u64 instruction_sigp_stop; 445 u64 instruction_sigp_stop_store_status; 446 u64 instruction_sigp_store_status; 447 u64 instruction_sigp_store_adtl_status; 448 u64 instruction_sigp_arch; 449 u64 instruction_sigp_prefix; 450 u64 instruction_sigp_restart; 451 u64 instruction_sigp_init_cpu_reset; 452 u64 instruction_sigp_cpu_reset; 453 u64 instruction_sigp_unknown; 454 u64 diagnose_10; 455 u64 diagnose_44; 456 u64 diagnose_9c; 457 u64 diagnose_9c_ignored; 458 u64 diagnose_258; 459 u64 diagnose_308; 460 u64 diagnose_500; 461 u64 diagnose_other; 462 }; 463 464 #define PGM_OPERATION 0x01 465 #define PGM_PRIVILEGED_OP 0x02 466 #define PGM_EXECUTE 0x03 467 #define PGM_PROTECTION 0x04 468 #define PGM_ADDRESSING 0x05 469 #define PGM_SPECIFICATION 0x06 470 #define PGM_DATA 0x07 471 #define PGM_FIXED_POINT_OVERFLOW 0x08 472 #define PGM_FIXED_POINT_DIVIDE 0x09 473 #define PGM_DECIMAL_OVERFLOW 0x0a 474 #define PGM_DECIMAL_DIVIDE 0x0b 475 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 476 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 477 #define PGM_HFP_SIGNIFICANCE 0x0e 478 #define PGM_HFP_DIVIDE 0x0f 479 #define PGM_SEGMENT_TRANSLATION 0x10 480 #define PGM_PAGE_TRANSLATION 0x11 481 #define PGM_TRANSLATION_SPEC 0x12 482 #define PGM_SPECIAL_OPERATION 0x13 483 #define PGM_OPERAND 0x15 484 #define PGM_TRACE_TABEL 0x16 485 #define PGM_VECTOR_PROCESSING 0x1b 486 #define PGM_SPACE_SWITCH 0x1c 487 #define PGM_HFP_SQUARE_ROOT 0x1d 488 #define PGM_PC_TRANSLATION_SPEC 0x1f 489 #define PGM_AFX_TRANSLATION 0x20 490 #define PGM_ASX_TRANSLATION 0x21 491 #define PGM_LX_TRANSLATION 0x22 492 #define PGM_EX_TRANSLATION 0x23 493 #define PGM_PRIMARY_AUTHORITY 0x24 494 #define PGM_SECONDARY_AUTHORITY 0x25 495 #define PGM_LFX_TRANSLATION 0x26 496 #define PGM_LSX_TRANSLATION 0x27 497 #define PGM_ALET_SPECIFICATION 0x28 498 #define PGM_ALEN_TRANSLATION 0x29 499 #define PGM_ALE_SEQUENCE 0x2a 500 #define PGM_ASTE_VALIDITY 0x2b 501 #define PGM_ASTE_SEQUENCE 0x2c 502 #define PGM_EXTENDED_AUTHORITY 0x2d 503 #define PGM_LSTE_SEQUENCE 0x2e 504 #define PGM_ASTE_INSTANCE 0x2f 505 #define PGM_STACK_FULL 0x30 506 #define PGM_STACK_EMPTY 0x31 507 #define PGM_STACK_SPECIFICATION 0x32 508 #define PGM_STACK_TYPE 0x33 509 #define PGM_STACK_OPERATION 0x34 510 #define PGM_ASCE_TYPE 0x38 511 #define PGM_REGION_FIRST_TRANS 0x39 512 #define PGM_REGION_SECOND_TRANS 0x3a 513 #define PGM_REGION_THIRD_TRANS 0x3b 514 #define PGM_MONITOR 0x40 515 #define PGM_PER 0x80 516 #define PGM_CRYPTO_OPERATION 0x119 517 518 /* irq types in ascend order of priorities */ 519 enum irq_types { 520 IRQ_PEND_SET_PREFIX = 0, 521 IRQ_PEND_RESTART, 522 IRQ_PEND_SIGP_STOP, 523 IRQ_PEND_IO_ISC_7, 524 IRQ_PEND_IO_ISC_6, 525 IRQ_PEND_IO_ISC_5, 526 IRQ_PEND_IO_ISC_4, 527 IRQ_PEND_IO_ISC_3, 528 IRQ_PEND_IO_ISC_2, 529 IRQ_PEND_IO_ISC_1, 530 IRQ_PEND_IO_ISC_0, 531 IRQ_PEND_VIRTIO, 532 IRQ_PEND_PFAULT_DONE, 533 IRQ_PEND_PFAULT_INIT, 534 IRQ_PEND_EXT_HOST, 535 IRQ_PEND_EXT_SERVICE, 536 IRQ_PEND_EXT_SERVICE_EV, 537 IRQ_PEND_EXT_TIMING, 538 IRQ_PEND_EXT_CPU_TIMER, 539 IRQ_PEND_EXT_CLOCK_COMP, 540 IRQ_PEND_EXT_EXTERNAL, 541 IRQ_PEND_EXT_EMERGENCY, 542 IRQ_PEND_EXT_MALFUNC, 543 IRQ_PEND_EXT_IRQ_KEY, 544 IRQ_PEND_MCHK_REP, 545 IRQ_PEND_PROG, 546 IRQ_PEND_SVC, 547 IRQ_PEND_MCHK_EX, 548 IRQ_PEND_COUNT 549 }; 550 551 /* We have 2M for virtio device descriptor pages. Smallest amount of 552 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 553 */ 554 #define KVM_S390_MAX_VIRTIO_IRQS 87381 555 556 /* 557 * Repressible (non-floating) machine check interrupts 558 * subclass bits in MCIC 559 */ 560 #define MCHK_EXTD_BIT 58 561 #define MCHK_DEGR_BIT 56 562 #define MCHK_WARN_BIT 55 563 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 564 (1UL << MCHK_EXTD_BIT) | \ 565 (1UL << MCHK_WARN_BIT)) 566 567 /* Exigent machine check interrupts subclass bits in MCIC */ 568 #define MCHK_SD_BIT 63 569 #define MCHK_PD_BIT 62 570 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 571 572 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 573 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 574 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 575 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 576 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 577 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 578 (1UL << IRQ_PEND_EXT_TIMING) | \ 579 (1UL << IRQ_PEND_EXT_HOST) | \ 580 (1UL << IRQ_PEND_EXT_SERVICE) | \ 581 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 582 (1UL << IRQ_PEND_VIRTIO) | \ 583 (1UL << IRQ_PEND_PFAULT_INIT) | \ 584 (1UL << IRQ_PEND_PFAULT_DONE)) 585 586 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 587 (1UL << IRQ_PEND_IO_ISC_1) | \ 588 (1UL << IRQ_PEND_IO_ISC_2) | \ 589 (1UL << IRQ_PEND_IO_ISC_3) | \ 590 (1UL << IRQ_PEND_IO_ISC_4) | \ 591 (1UL << IRQ_PEND_IO_ISC_5) | \ 592 (1UL << IRQ_PEND_IO_ISC_6) | \ 593 (1UL << IRQ_PEND_IO_ISC_7)) 594 595 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 596 (1UL << IRQ_PEND_MCHK_EX)) 597 598 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 599 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 600 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 601 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 602 (1UL << IRQ_PEND_EXT_SERVICE) | \ 603 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 604 605 struct kvm_s390_interrupt_info { 606 struct list_head list; 607 u64 type; 608 union { 609 struct kvm_s390_io_info io; 610 struct kvm_s390_ext_info ext; 611 struct kvm_s390_pgm_info pgm; 612 struct kvm_s390_emerg_info emerg; 613 struct kvm_s390_extcall_info extcall; 614 struct kvm_s390_prefix_info prefix; 615 struct kvm_s390_stop_info stop; 616 struct kvm_s390_mchk_info mchk; 617 }; 618 }; 619 620 struct kvm_s390_irq_payload { 621 struct kvm_s390_io_info io; 622 struct kvm_s390_ext_info ext; 623 struct kvm_s390_pgm_info pgm; 624 struct kvm_s390_emerg_info emerg; 625 struct kvm_s390_extcall_info extcall; 626 struct kvm_s390_prefix_info prefix; 627 struct kvm_s390_stop_info stop; 628 struct kvm_s390_mchk_info mchk; 629 }; 630 631 struct kvm_s390_local_interrupt { 632 spinlock_t lock; 633 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 634 struct kvm_s390_irq_payload irq; 635 unsigned long pending_irqs; 636 }; 637 638 #define FIRQ_LIST_IO_ISC_0 0 639 #define FIRQ_LIST_IO_ISC_1 1 640 #define FIRQ_LIST_IO_ISC_2 2 641 #define FIRQ_LIST_IO_ISC_3 3 642 #define FIRQ_LIST_IO_ISC_4 4 643 #define FIRQ_LIST_IO_ISC_5 5 644 #define FIRQ_LIST_IO_ISC_6 6 645 #define FIRQ_LIST_IO_ISC_7 7 646 #define FIRQ_LIST_PFAULT 8 647 #define FIRQ_LIST_VIRTIO 9 648 #define FIRQ_LIST_COUNT 10 649 #define FIRQ_CNTR_IO 0 650 #define FIRQ_CNTR_SERVICE 1 651 #define FIRQ_CNTR_VIRTIO 2 652 #define FIRQ_CNTR_PFAULT 3 653 #define FIRQ_MAX_COUNT 4 654 655 /* mask the AIS mode for a given ISC */ 656 #define AIS_MODE_MASK(isc) (0x80 >> isc) 657 658 #define KVM_S390_AIS_MODE_ALL 0 659 #define KVM_S390_AIS_MODE_SINGLE 1 660 661 struct kvm_s390_float_interrupt { 662 unsigned long pending_irqs; 663 unsigned long masked_irqs; 664 spinlock_t lock; 665 struct list_head lists[FIRQ_LIST_COUNT]; 666 int counters[FIRQ_MAX_COUNT]; 667 struct kvm_s390_mchk_info mchk; 668 struct kvm_s390_ext_info srv_signal; 669 int next_rr_cpu; 670 struct mutex ais_lock; 671 u8 simm; 672 u8 nimm; 673 }; 674 675 struct kvm_hw_wp_info_arch { 676 unsigned long addr; 677 unsigned long phys_addr; 678 int len; 679 char *old_data; 680 }; 681 682 struct kvm_hw_bp_info_arch { 683 unsigned long addr; 684 int len; 685 }; 686 687 /* 688 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 689 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 690 * arch/s390/include/uapi/asm/kvm.h 691 */ 692 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 693 694 #define guestdbg_enabled(vcpu) \ 695 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 696 #define guestdbg_sstep_enabled(vcpu) \ 697 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 698 #define guestdbg_hw_bp_enabled(vcpu) \ 699 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 700 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 701 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 702 703 struct kvm_guestdbg_info_arch { 704 unsigned long cr0; 705 unsigned long cr9; 706 unsigned long cr10; 707 unsigned long cr11; 708 struct kvm_hw_bp_info_arch *hw_bp_info; 709 struct kvm_hw_wp_info_arch *hw_wp_info; 710 int nr_hw_bp; 711 int nr_hw_wp; 712 unsigned long last_bp; 713 }; 714 715 struct kvm_s390_pv_vcpu { 716 u64 handle; 717 unsigned long stor_base; 718 }; 719 720 struct kvm_vcpu_arch { 721 struct kvm_s390_sie_block *sie_block; 722 /* if vsie is active, currently executed shadow sie control block */ 723 struct kvm_s390_sie_block *vsie_block; 724 unsigned int host_acrs[NUM_ACRS]; 725 struct gs_cb *host_gscb; 726 struct fpu host_fpregs; 727 struct kvm_s390_local_interrupt local_int; 728 struct hrtimer ckc_timer; 729 struct kvm_s390_pgm_info pgm; 730 struct gmap *gmap; 731 /* backup location for the currently enabled gmap when scheduled out */ 732 struct gmap *enabled_gmap; 733 struct kvm_guestdbg_info_arch guestdbg; 734 unsigned long pfault_token; 735 unsigned long pfault_select; 736 unsigned long pfault_compare; 737 bool cputm_enabled; 738 /* 739 * The seqcount protects updates to cputm_start and sie_block.cputm, 740 * this way we can have non-blocking reads with consistent values. 741 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 742 * values and to start/stop/enable/disable cpu timer accounting. 743 */ 744 seqcount_t cputm_seqcount; 745 __u64 cputm_start; 746 bool gs_enabled; 747 bool skey_enabled; 748 struct kvm_s390_pv_vcpu pv; 749 union diag318_info diag318_info; 750 }; 751 752 struct kvm_vm_stat { 753 u64 inject_io; 754 u64 inject_float_mchk; 755 u64 inject_pfault_done; 756 u64 inject_service_signal; 757 u64 inject_virtio; 758 u64 remote_tlb_flush; 759 }; 760 761 struct kvm_arch_memory_slot { 762 }; 763 764 struct s390_map_info { 765 struct list_head list; 766 __u64 guest_addr; 767 __u64 addr; 768 struct page *page; 769 }; 770 771 struct s390_io_adapter { 772 unsigned int id; 773 int isc; 774 bool maskable; 775 bool masked; 776 bool swap; 777 bool suppressible; 778 }; 779 780 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 781 #define MAX_S390_ADAPTER_MAPS 256 782 783 /* maximum size of facilities and facility mask is 2k bytes */ 784 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 785 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 786 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 787 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 788 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 789 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 790 791 struct kvm_s390_cpu_model { 792 /* facility mask supported by kvm & hosting machine */ 793 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64]; 794 struct kvm_s390_vm_cpu_subfunc subfuncs; 795 /* facility list requested by guest (in dma page) */ 796 __u64 *fac_list; 797 u64 cpuid; 798 unsigned short ibc; 799 }; 800 801 struct kvm_s390_module_hook { 802 int (*hook)(struct kvm_vcpu *vcpu); 803 struct module *owner; 804 }; 805 806 struct kvm_s390_crypto { 807 struct kvm_s390_crypto_cb *crycb; 808 struct kvm_s390_module_hook *pqap_hook; 809 __u32 crycbd; 810 __u8 aes_kw; 811 __u8 dea_kw; 812 __u8 apie; 813 }; 814 815 #define APCB0_MASK_SIZE 1 816 struct kvm_s390_apcb0 { 817 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 818 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 819 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 820 __u64 reserved18; /* 0x0018 */ 821 }; 822 823 #define APCB1_MASK_SIZE 4 824 struct kvm_s390_apcb1 { 825 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 826 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 827 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 828 __u64 reserved60[4]; /* 0x0060 */ 829 }; 830 831 struct kvm_s390_crypto_cb { 832 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 833 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 834 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 835 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 836 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 837 }; 838 839 struct kvm_s390_gisa { 840 union { 841 struct { /* common to all formats */ 842 u32 next_alert; 843 u8 ipm; 844 u8 reserved01[2]; 845 u8 iam; 846 }; 847 struct { /* format 0 */ 848 u32 next_alert; 849 u8 ipm; 850 u8 reserved01; 851 u8 : 6; 852 u8 g : 1; 853 u8 c : 1; 854 u8 iam; 855 u8 reserved02[4]; 856 u32 airq_count; 857 } g0; 858 struct { /* format 1 */ 859 u32 next_alert; 860 u8 ipm; 861 u8 simm; 862 u8 nimm; 863 u8 iam; 864 u8 aism[8]; 865 u8 : 6; 866 u8 g : 1; 867 u8 c : 1; 868 u8 reserved03[11]; 869 u32 airq_count; 870 } g1; 871 struct { 872 u64 word[4]; 873 } u64; 874 }; 875 }; 876 877 struct kvm_s390_gib { 878 u32 alert_list_origin; 879 u32 reserved01; 880 u8:5; 881 u8 nisc:3; 882 u8 reserved03[3]; 883 u32 reserved04[5]; 884 }; 885 886 /* 887 * sie_page2 has to be allocated as DMA because fac_list, crycb and 888 * gisa need 31bit addresses in the sie control block. 889 */ 890 struct sie_page2 { 891 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 892 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 893 struct kvm_s390_gisa gisa; /* 0x0900 */ 894 struct kvm *kvm; /* 0x0920 */ 895 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 896 }; 897 898 struct kvm_s390_vsie { 899 struct mutex mutex; 900 struct radix_tree_root addr_to_page; 901 int page_count; 902 int next; 903 struct page *pages[KVM_MAX_VCPUS]; 904 }; 905 906 struct kvm_s390_gisa_iam { 907 u8 mask; 908 spinlock_t ref_lock; 909 u32 ref_count[MAX_ISC + 1]; 910 }; 911 912 struct kvm_s390_gisa_interrupt { 913 struct kvm_s390_gisa *origin; 914 struct kvm_s390_gisa_iam alert; 915 struct hrtimer timer; 916 u64 expires; 917 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 918 }; 919 920 struct kvm_s390_pv { 921 u64 handle; 922 u64 guest_len; 923 unsigned long stor_base; 924 void *stor_var; 925 }; 926 927 struct kvm_arch{ 928 void *sca; 929 int use_esca; 930 rwlock_t sca_lock; 931 debug_info_t *dbf; 932 struct kvm_s390_float_interrupt float_int; 933 struct kvm_device *flic; 934 struct gmap *gmap; 935 unsigned long mem_limit; 936 int css_support; 937 int use_irqchip; 938 int use_cmma; 939 int use_pfmfi; 940 int use_skf; 941 int user_cpu_state_ctrl; 942 int user_sigp; 943 int user_stsi; 944 int user_instr0; 945 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 946 wait_queue_head_t ipte_wq; 947 int ipte_lock_count; 948 struct mutex ipte_mutex; 949 spinlock_t start_stop_lock; 950 struct sie_page2 *sie_page2; 951 struct kvm_s390_cpu_model model; 952 struct kvm_s390_crypto crypto; 953 struct kvm_s390_vsie vsie; 954 u8 epdx; 955 u64 epoch; 956 int migration_mode; 957 atomic64_t cmma_dirty_pages; 958 /* subset of available cpu features enabled by user space */ 959 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 960 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 961 struct kvm_s390_gisa_interrupt gisa_int; 962 struct kvm_s390_pv pv; 963 }; 964 965 #define KVM_HVA_ERR_BAD (-1UL) 966 #define KVM_HVA_ERR_RO_BAD (-2UL) 967 968 static inline bool kvm_is_error_hva(unsigned long addr) 969 { 970 return IS_ERR_VALUE(addr); 971 } 972 973 #define ASYNC_PF_PER_VCPU 64 974 struct kvm_arch_async_pf { 975 unsigned long pfault_token; 976 }; 977 978 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 979 980 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 981 struct kvm_async_pf *work); 982 983 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 984 struct kvm_async_pf *work); 985 986 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 987 struct kvm_async_pf *work); 988 989 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 990 991 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 992 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 993 unsigned long *aqm, unsigned long *adm); 994 995 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 996 extern char sie_exit; 997 998 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 999 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 1000 1001 static inline void kvm_arch_hardware_disable(void) {} 1002 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 1003 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 1004 static inline void kvm_arch_free_memslot(struct kvm *kvm, 1005 struct kvm_memory_slot *slot) {} 1006 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 1007 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 1008 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 1009 struct kvm_memory_slot *slot) {} 1010 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 1011 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 1012 1013 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu); 1014 1015 #endif 1016