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.h> 19 #include <linux/seqlock.h> 20 #include <linux/module.h> 21 #include <linux/pci.h> 22 #include <linux/mmu_notifier.h> 23 #include <asm/debug.h> 24 #include <asm/cpu.h> 25 #include <asm/fpu.h> 26 #include <asm/isc.h> 27 #include <asm/guarded_storage.h> 28 29 #define KVM_S390_BSCA_CPU_SLOTS 64 30 #define KVM_S390_ESCA_CPU_SLOTS 248 31 #define KVM_MAX_VCPUS 255 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 #define KVM_REQ_REFRESH_GUEST_PREFIX \ 50 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) 51 52 #define SIGP_CTRL_C 0x80 53 #define SIGP_CTRL_SCN_MASK 0x3f 54 55 union bsca_sigp_ctrl { 56 __u8 value; 57 struct { 58 __u8 c : 1; 59 __u8 r : 1; 60 __u8 scn : 6; 61 }; 62 }; 63 64 union esca_sigp_ctrl { 65 __u16 value; 66 struct { 67 __u8 c : 1; 68 __u8 reserved: 7; 69 __u8 scn; 70 }; 71 }; 72 73 struct esca_entry { 74 union esca_sigp_ctrl sigp_ctrl; 75 __u16 reserved1[3]; 76 __u64 sda; 77 __u64 reserved2[6]; 78 }; 79 80 struct bsca_entry { 81 __u8 reserved0; 82 union bsca_sigp_ctrl sigp_ctrl; 83 __u16 reserved[3]; 84 __u64 sda; 85 __u64 reserved2[2]; 86 }; 87 88 union ipte_control { 89 unsigned long val; 90 struct { 91 unsigned long k : 1; 92 unsigned long kh : 31; 93 unsigned long kg : 32; 94 }; 95 }; 96 97 /* 98 * Utility is defined as two bytes but having it four bytes wide 99 * generates more efficient code. Since the following bytes are 100 * reserved this makes no functional difference. 101 */ 102 union sca_utility { 103 __u32 val; 104 struct { 105 __u32 mtcr : 1; 106 __u32 : 31; 107 }; 108 }; 109 110 struct bsca_block { 111 union ipte_control ipte_control; 112 __u64 reserved[5]; 113 __u64 mcn; 114 union sca_utility utility; 115 __u8 reserved2[4]; 116 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 117 }; 118 119 struct esca_block { 120 union ipte_control ipte_control; 121 __u64 reserved1[6]; 122 union sca_utility utility; 123 __u8 reserved2[4]; 124 __u64 mcn[4]; 125 __u64 reserved3[20]; 126 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 127 }; 128 129 /* 130 * This struct is used to store some machine check info from lowcore 131 * for machine checks that happen while the guest is running. 132 * This info in host's lowcore might be overwritten by a second machine 133 * check from host when host is in the machine check's high-level handling. 134 * The size is 24 bytes. 135 */ 136 struct mcck_volatile_info { 137 __u64 mcic; 138 __u64 failing_storage_address; 139 __u32 ext_damage_code; 140 __u32 reserved; 141 }; 142 143 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 144 CR0_MEASUREMENT_ALERT_SUBMASK) 145 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 146 CR14_EXTERNAL_DAMAGE_SUBMASK) 147 148 #define SIDAD_SIZE_MASK 0xff 149 #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK) 150 #define sida_size(sie_block) \ 151 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE) 152 153 #define CPUSTAT_STOPPED 0x80000000 154 #define CPUSTAT_WAIT 0x10000000 155 #define CPUSTAT_ECALL_PEND 0x08000000 156 #define CPUSTAT_STOP_INT 0x04000000 157 #define CPUSTAT_IO_INT 0x02000000 158 #define CPUSTAT_EXT_INT 0x01000000 159 #define CPUSTAT_RUNNING 0x00800000 160 #define CPUSTAT_RETAINED 0x00400000 161 #define CPUSTAT_TIMING_SUB 0x00020000 162 #define CPUSTAT_SIE_SUB 0x00010000 163 #define CPUSTAT_RRF 0x00008000 164 #define CPUSTAT_SLSV 0x00004000 165 #define CPUSTAT_SLSR 0x00002000 166 #define CPUSTAT_ZARCH 0x00000800 167 #define CPUSTAT_MCDS 0x00000100 168 #define CPUSTAT_KSS 0x00000200 169 #define CPUSTAT_SM 0x00000080 170 #define CPUSTAT_IBS 0x00000040 171 #define CPUSTAT_GED2 0x00000010 172 #define CPUSTAT_G 0x00000008 173 #define CPUSTAT_GED 0x00000004 174 #define CPUSTAT_J 0x00000002 175 #define CPUSTAT_P 0x00000001 176 177 struct kvm_s390_sie_block { 178 atomic_t cpuflags; /* 0x0000 */ 179 __u32 : 1; /* 0x0004 */ 180 __u32 prefix : 18; 181 __u32 : 1; 182 __u32 ibc : 12; 183 __u8 reserved08[4]; /* 0x0008 */ 184 #define PROG_IN_SIE (1<<0) 185 __u32 prog0c; /* 0x000c */ 186 union { 187 __u8 reserved10[16]; /* 0x0010 */ 188 struct { 189 __u64 pv_handle_cpu; 190 __u64 pv_handle_config; 191 }; 192 }; 193 #define PROG_BLOCK_SIE (1<<0) 194 #define PROG_REQUEST (1<<1) 195 atomic_t prog20; /* 0x0020 */ 196 __u8 reserved24[4]; /* 0x0024 */ 197 __u64 cputm; /* 0x0028 */ 198 __u64 ckc; /* 0x0030 */ 199 __u64 epoch; /* 0x0038 */ 200 __u32 svcc; /* 0x0040 */ 201 #define LCTL_CR0 0x8000 202 #define LCTL_CR6 0x0200 203 #define LCTL_CR9 0x0040 204 #define LCTL_CR10 0x0020 205 #define LCTL_CR11 0x0010 206 #define LCTL_CR14 0x0002 207 __u16 lctl; /* 0x0044 */ 208 __s16 icpua; /* 0x0046 */ 209 #define ICTL_OPEREXC 0x80000000 210 #define ICTL_PINT 0x20000000 211 #define ICTL_LPSW 0x00400000 212 #define ICTL_STCTL 0x00040000 213 #define ICTL_ISKE 0x00004000 214 #define ICTL_SSKE 0x00002000 215 #define ICTL_RRBE 0x00001000 216 #define ICTL_TPROT 0x00000200 217 __u32 ictl; /* 0x0048 */ 218 #define ECA_CEI 0x80000000 219 #define ECA_IB 0x40000000 220 #define ECA_SIGPI 0x10000000 221 #define ECA_MVPGI 0x01000000 222 #define ECA_AIV 0x00200000 223 #define ECA_VX 0x00020000 224 #define ECA_PROTEXCI 0x00002000 225 #define ECA_APIE 0x00000008 226 #define ECA_SII 0x00000001 227 __u32 eca; /* 0x004c */ 228 #define ICPT_INST 0x04 229 #define ICPT_PROGI 0x08 230 #define ICPT_INSTPROGI 0x0C 231 #define ICPT_EXTREQ 0x10 232 #define ICPT_EXTINT 0x14 233 #define ICPT_IOREQ 0x18 234 #define ICPT_WAIT 0x1c 235 #define ICPT_VALIDITY 0x20 236 #define ICPT_STOP 0x28 237 #define ICPT_OPEREXC 0x2C 238 #define ICPT_PARTEXEC 0x38 239 #define ICPT_IOINST 0x40 240 #define ICPT_KSS 0x5c 241 #define ICPT_MCHKREQ 0x60 242 #define ICPT_INT_ENABLE 0x64 243 #define ICPT_PV_INSTR 0x68 244 #define ICPT_PV_NOTIFY 0x6c 245 #define ICPT_PV_PREF 0x70 246 __u8 icptcode; /* 0x0050 */ 247 __u8 icptstatus; /* 0x0051 */ 248 __u16 ihcpu; /* 0x0052 */ 249 __u8 reserved54; /* 0x0054 */ 250 #define IICTL_CODE_NONE 0x00 251 #define IICTL_CODE_MCHK 0x01 252 #define IICTL_CODE_EXT 0x02 253 #define IICTL_CODE_IO 0x03 254 #define IICTL_CODE_RESTART 0x04 255 #define IICTL_CODE_SPECIFICATION 0x10 256 #define IICTL_CODE_OPERAND 0x11 257 __u8 iictl; /* 0x0055 */ 258 __u16 ipa; /* 0x0056 */ 259 __u32 ipb; /* 0x0058 */ 260 __u32 scaoh; /* 0x005c */ 261 #define FPF_BPBC 0x20 262 __u8 fpf; /* 0x0060 */ 263 #define ECB_GS 0x40 264 #define ECB_TE 0x10 265 #define ECB_SPECI 0x08 266 #define ECB_SRSI 0x04 267 #define ECB_HOSTPROTINT 0x02 268 #define ECB_PTF 0x01 269 __u8 ecb; /* 0x0061 */ 270 #define ECB2_CMMA 0x80 271 #define ECB2_IEP 0x20 272 #define ECB2_PFMFI 0x08 273 #define ECB2_ESCA 0x04 274 #define ECB2_ZPCI_LSI 0x02 275 __u8 ecb2; /* 0x0062 */ 276 #define ECB3_AISI 0x20 277 #define ECB3_AISII 0x10 278 #define ECB3_DEA 0x08 279 #define ECB3_AES 0x04 280 #define ECB3_RI 0x01 281 __u8 ecb3; /* 0x0063 */ 282 #define ESCA_SCAOL_MASK ~0x3fU 283 __u32 scaol; /* 0x0064 */ 284 __u8 sdf; /* 0x0068 */ 285 __u8 epdx; /* 0x0069 */ 286 __u8 cpnc; /* 0x006a */ 287 __u8 reserved6b; /* 0x006b */ 288 __u32 todpr; /* 0x006c */ 289 #define GISA_FORMAT1 0x00000001 290 __u32 gd; /* 0x0070 */ 291 __u8 reserved74[12]; /* 0x0074 */ 292 __u64 mso; /* 0x0080 */ 293 __u64 msl; /* 0x0088 */ 294 psw_t gpsw; /* 0x0090 */ 295 __u64 gg14; /* 0x00a0 */ 296 __u64 gg15; /* 0x00a8 */ 297 __u8 reservedb0[8]; /* 0x00b0 */ 298 #define HPID_KVM 0x4 299 #define HPID_VSIE 0x5 300 __u8 hpid; /* 0x00b8 */ 301 __u8 reservedb9[7]; /* 0x00b9 */ 302 union { 303 struct { 304 __u32 eiparams; /* 0x00c0 */ 305 __u16 extcpuaddr; /* 0x00c4 */ 306 __u16 eic; /* 0x00c6 */ 307 }; 308 __u64 mcic; /* 0x00c0 */ 309 } __packed; 310 __u32 reservedc8; /* 0x00c8 */ 311 union { 312 struct { 313 __u16 pgmilc; /* 0x00cc */ 314 __u16 iprcc; /* 0x00ce */ 315 }; 316 __u32 edc; /* 0x00cc */ 317 } __packed; 318 union { 319 struct { 320 __u32 dxc; /* 0x00d0 */ 321 __u16 mcn; /* 0x00d4 */ 322 __u8 perc; /* 0x00d6 */ 323 __u8 peratmid; /* 0x00d7 */ 324 }; 325 __u64 faddr; /* 0x00d0 */ 326 } __packed; 327 __u64 peraddr; /* 0x00d8 */ 328 __u8 eai; /* 0x00e0 */ 329 __u8 peraid; /* 0x00e1 */ 330 __u8 oai; /* 0x00e2 */ 331 __u8 armid; /* 0x00e3 */ 332 __u8 reservede4[4]; /* 0x00e4 */ 333 union { 334 __u64 tecmc; /* 0x00e8 */ 335 struct { 336 __u16 subchannel_id; /* 0x00e8 */ 337 __u16 subchannel_nr; /* 0x00ea */ 338 __u32 io_int_parm; /* 0x00ec */ 339 __u32 io_int_word; /* 0x00f0 */ 340 }; 341 } __packed; 342 __u8 reservedf4[8]; /* 0x00f4 */ 343 #define CRYCB_FORMAT_MASK 0x00000003 344 #define CRYCB_FORMAT0 0x00000000 345 #define CRYCB_FORMAT1 0x00000001 346 #define CRYCB_FORMAT2 0x00000003 347 __u32 crycbd; /* 0x00fc */ 348 __u64 gcr[16]; /* 0x0100 */ 349 union { 350 __u64 gbea; /* 0x0180 */ 351 __u64 sidad; 352 }; 353 __u8 reserved188[8]; /* 0x0188 */ 354 __u64 sdnxo; /* 0x0190 */ 355 __u8 reserved198[8]; /* 0x0198 */ 356 __u32 fac; /* 0x01a0 */ 357 __u8 reserved1a4[20]; /* 0x01a4 */ 358 __u64 cbrlo; /* 0x01b8 */ 359 __u8 reserved1c0[8]; /* 0x01c0 */ 360 #define ECD_HOSTREGMGMT 0x20000000 361 #define ECD_MEF 0x08000000 362 #define ECD_ETOKENF 0x02000000 363 #define ECD_ECC 0x00200000 364 #define ECD_HMAC 0x00004000 365 __u32 ecd; /* 0x01c8 */ 366 __u8 reserved1cc[18]; /* 0x01cc */ 367 __u64 pp; /* 0x01de */ 368 __u8 reserved1e6[2]; /* 0x01e6 */ 369 __u64 itdba; /* 0x01e8 */ 370 __u64 riccbd; /* 0x01f0 */ 371 __u64 gvrd; /* 0x01f8 */ 372 } __packed __aligned(512); 373 374 struct kvm_s390_itdb { 375 __u8 data[256]; 376 }; 377 378 struct sie_page { 379 struct kvm_s390_sie_block sie_block; 380 struct mcck_volatile_info mcck_info; /* 0x0200 */ 381 __u8 reserved218[360]; /* 0x0218 */ 382 __u64 pv_grregs[16]; /* 0x0380 */ 383 __u8 reserved400[512]; /* 0x0400 */ 384 struct kvm_s390_itdb itdb; /* 0x0600 */ 385 __u8 reserved700[2304]; /* 0x0700 */ 386 }; 387 388 struct kvm_vcpu_stat { 389 struct kvm_vcpu_stat_generic generic; 390 u64 exit_userspace; 391 u64 exit_null; 392 u64 exit_external_request; 393 u64 exit_io_request; 394 u64 exit_external_interrupt; 395 u64 exit_stop_request; 396 u64 exit_validity; 397 u64 exit_instruction; 398 u64 exit_pei; 399 u64 halt_no_poll_steal; 400 u64 instruction_lctl; 401 u64 instruction_lctlg; 402 u64 instruction_stctl; 403 u64 instruction_stctg; 404 u64 exit_program_interruption; 405 u64 exit_instr_and_program; 406 u64 exit_operation_exception; 407 u64 deliver_ckc; 408 u64 deliver_cputm; 409 u64 deliver_external_call; 410 u64 deliver_emergency_signal; 411 u64 deliver_service_signal; 412 u64 deliver_virtio; 413 u64 deliver_stop_signal; 414 u64 deliver_prefix_signal; 415 u64 deliver_restart_signal; 416 u64 deliver_program; 417 u64 deliver_io; 418 u64 deliver_machine_check; 419 u64 exit_wait_state; 420 u64 inject_ckc; 421 u64 inject_cputm; 422 u64 inject_external_call; 423 u64 inject_emergency_signal; 424 u64 inject_mchk; 425 u64 inject_pfault_init; 426 u64 inject_program; 427 u64 inject_restart; 428 u64 inject_set_prefix; 429 u64 inject_stop_signal; 430 u64 instruction_epsw; 431 u64 instruction_gs; 432 u64 instruction_io_other; 433 u64 instruction_lpsw; 434 u64 instruction_lpswe; 435 u64 instruction_lpswey; 436 u64 instruction_pfmf; 437 u64 instruction_ptff; 438 u64 instruction_sck; 439 u64 instruction_sckpf; 440 u64 instruction_stidp; 441 u64 instruction_spx; 442 u64 instruction_stpx; 443 u64 instruction_stap; 444 u64 instruction_iske; 445 u64 instruction_ri; 446 u64 instruction_rrbe; 447 u64 instruction_sske; 448 u64 instruction_ipte_interlock; 449 u64 instruction_stsi; 450 u64 instruction_stfl; 451 u64 instruction_tb; 452 u64 instruction_tpi; 453 u64 instruction_tprot; 454 u64 instruction_tsch; 455 u64 instruction_sie; 456 u64 instruction_essa; 457 u64 instruction_sthyi; 458 u64 instruction_sigp_sense; 459 u64 instruction_sigp_sense_running; 460 u64 instruction_sigp_external_call; 461 u64 instruction_sigp_emergency; 462 u64 instruction_sigp_cond_emergency; 463 u64 instruction_sigp_start; 464 u64 instruction_sigp_stop; 465 u64 instruction_sigp_stop_store_status; 466 u64 instruction_sigp_store_status; 467 u64 instruction_sigp_store_adtl_status; 468 u64 instruction_sigp_arch; 469 u64 instruction_sigp_prefix; 470 u64 instruction_sigp_restart; 471 u64 instruction_sigp_init_cpu_reset; 472 u64 instruction_sigp_cpu_reset; 473 u64 instruction_sigp_unknown; 474 u64 instruction_diagnose_10; 475 u64 instruction_diagnose_44; 476 u64 instruction_diagnose_9c; 477 u64 diag_9c_ignored; 478 u64 diag_9c_forward; 479 u64 instruction_diagnose_258; 480 u64 instruction_diagnose_308; 481 u64 instruction_diagnose_500; 482 u64 instruction_diagnose_other; 483 u64 pfault_sync; 484 }; 485 486 #define PGM_OPERATION 0x01 487 #define PGM_PRIVILEGED_OP 0x02 488 #define PGM_EXECUTE 0x03 489 #define PGM_PROTECTION 0x04 490 #define PGM_ADDRESSING 0x05 491 #define PGM_SPECIFICATION 0x06 492 #define PGM_DATA 0x07 493 #define PGM_FIXED_POINT_OVERFLOW 0x08 494 #define PGM_FIXED_POINT_DIVIDE 0x09 495 #define PGM_DECIMAL_OVERFLOW 0x0a 496 #define PGM_DECIMAL_DIVIDE 0x0b 497 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 498 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 499 #define PGM_HFP_SIGNIFICANCE 0x0e 500 #define PGM_HFP_DIVIDE 0x0f 501 #define PGM_SEGMENT_TRANSLATION 0x10 502 #define PGM_PAGE_TRANSLATION 0x11 503 #define PGM_TRANSLATION_SPEC 0x12 504 #define PGM_SPECIAL_OPERATION 0x13 505 #define PGM_OPERAND 0x15 506 #define PGM_TRACE_TABEL 0x16 507 #define PGM_VECTOR_PROCESSING 0x1b 508 #define PGM_SPACE_SWITCH 0x1c 509 #define PGM_HFP_SQUARE_ROOT 0x1d 510 #define PGM_PC_TRANSLATION_SPEC 0x1f 511 #define PGM_AFX_TRANSLATION 0x20 512 #define PGM_ASX_TRANSLATION 0x21 513 #define PGM_LX_TRANSLATION 0x22 514 #define PGM_EX_TRANSLATION 0x23 515 #define PGM_PRIMARY_AUTHORITY 0x24 516 #define PGM_SECONDARY_AUTHORITY 0x25 517 #define PGM_LFX_TRANSLATION 0x26 518 #define PGM_LSX_TRANSLATION 0x27 519 #define PGM_ALET_SPECIFICATION 0x28 520 #define PGM_ALEN_TRANSLATION 0x29 521 #define PGM_ALE_SEQUENCE 0x2a 522 #define PGM_ASTE_VALIDITY 0x2b 523 #define PGM_ASTE_SEQUENCE 0x2c 524 #define PGM_EXTENDED_AUTHORITY 0x2d 525 #define PGM_LSTE_SEQUENCE 0x2e 526 #define PGM_ASTE_INSTANCE 0x2f 527 #define PGM_STACK_FULL 0x30 528 #define PGM_STACK_EMPTY 0x31 529 #define PGM_STACK_SPECIFICATION 0x32 530 #define PGM_STACK_TYPE 0x33 531 #define PGM_STACK_OPERATION 0x34 532 #define PGM_ASCE_TYPE 0x38 533 #define PGM_REGION_FIRST_TRANS 0x39 534 #define PGM_REGION_SECOND_TRANS 0x3a 535 #define PGM_REGION_THIRD_TRANS 0x3b 536 #define PGM_SECURE_STORAGE_ACCESS 0x3d 537 #define PGM_NON_SECURE_STORAGE_ACCESS 0x3e 538 #define PGM_SECURE_STORAGE_VIOLATION 0x3f 539 #define PGM_MONITOR 0x40 540 #define PGM_PER 0x80 541 #define PGM_CRYPTO_OPERATION 0x119 542 543 /* irq types in ascend order of priorities */ 544 enum irq_types { 545 IRQ_PEND_SET_PREFIX = 0, 546 IRQ_PEND_RESTART, 547 IRQ_PEND_SIGP_STOP, 548 IRQ_PEND_IO_ISC_7, 549 IRQ_PEND_IO_ISC_6, 550 IRQ_PEND_IO_ISC_5, 551 IRQ_PEND_IO_ISC_4, 552 IRQ_PEND_IO_ISC_3, 553 IRQ_PEND_IO_ISC_2, 554 IRQ_PEND_IO_ISC_1, 555 IRQ_PEND_IO_ISC_0, 556 IRQ_PEND_VIRTIO, 557 IRQ_PEND_PFAULT_DONE, 558 IRQ_PEND_PFAULT_INIT, 559 IRQ_PEND_EXT_HOST, 560 IRQ_PEND_EXT_SERVICE, 561 IRQ_PEND_EXT_SERVICE_EV, 562 IRQ_PEND_EXT_TIMING, 563 IRQ_PEND_EXT_CPU_TIMER, 564 IRQ_PEND_EXT_CLOCK_COMP, 565 IRQ_PEND_EXT_EXTERNAL, 566 IRQ_PEND_EXT_EMERGENCY, 567 IRQ_PEND_EXT_MALFUNC, 568 IRQ_PEND_EXT_IRQ_KEY, 569 IRQ_PEND_MCHK_REP, 570 IRQ_PEND_PROG, 571 IRQ_PEND_SVC, 572 IRQ_PEND_MCHK_EX, 573 IRQ_PEND_COUNT 574 }; 575 576 /* We have 2M for virtio device descriptor pages. Smallest amount of 577 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 578 */ 579 #define KVM_S390_MAX_VIRTIO_IRQS 87381 580 581 /* 582 * Repressible (non-floating) machine check interrupts 583 * subclass bits in MCIC 584 */ 585 #define MCHK_EXTD_BIT 58 586 #define MCHK_DEGR_BIT 56 587 #define MCHK_WARN_BIT 55 588 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 589 (1UL << MCHK_EXTD_BIT) | \ 590 (1UL << MCHK_WARN_BIT)) 591 592 /* Exigent machine check interrupts subclass bits in MCIC */ 593 #define MCHK_SD_BIT 63 594 #define MCHK_PD_BIT 62 595 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 596 597 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 598 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 599 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 600 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 601 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 602 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 603 (1UL << IRQ_PEND_EXT_TIMING) | \ 604 (1UL << IRQ_PEND_EXT_HOST) | \ 605 (1UL << IRQ_PEND_EXT_SERVICE) | \ 606 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 607 (1UL << IRQ_PEND_VIRTIO) | \ 608 (1UL << IRQ_PEND_PFAULT_INIT) | \ 609 (1UL << IRQ_PEND_PFAULT_DONE)) 610 611 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 612 (1UL << IRQ_PEND_IO_ISC_1) | \ 613 (1UL << IRQ_PEND_IO_ISC_2) | \ 614 (1UL << IRQ_PEND_IO_ISC_3) | \ 615 (1UL << IRQ_PEND_IO_ISC_4) | \ 616 (1UL << IRQ_PEND_IO_ISC_5) | \ 617 (1UL << IRQ_PEND_IO_ISC_6) | \ 618 (1UL << IRQ_PEND_IO_ISC_7)) 619 620 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 621 (1UL << IRQ_PEND_MCHK_EX)) 622 623 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 624 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 625 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 626 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 627 (1UL << IRQ_PEND_EXT_SERVICE) | \ 628 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 629 630 struct kvm_s390_interrupt_info { 631 struct list_head list; 632 u64 type; 633 union { 634 struct kvm_s390_io_info io; 635 struct kvm_s390_ext_info ext; 636 struct kvm_s390_pgm_info pgm; 637 struct kvm_s390_emerg_info emerg; 638 struct kvm_s390_extcall_info extcall; 639 struct kvm_s390_prefix_info prefix; 640 struct kvm_s390_stop_info stop; 641 struct kvm_s390_mchk_info mchk; 642 }; 643 }; 644 645 struct kvm_s390_irq_payload { 646 struct kvm_s390_io_info io; 647 struct kvm_s390_ext_info ext; 648 struct kvm_s390_pgm_info pgm; 649 struct kvm_s390_emerg_info emerg; 650 struct kvm_s390_extcall_info extcall; 651 struct kvm_s390_prefix_info prefix; 652 struct kvm_s390_stop_info stop; 653 struct kvm_s390_mchk_info mchk; 654 }; 655 656 struct kvm_s390_local_interrupt { 657 spinlock_t lock; 658 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 659 struct kvm_s390_irq_payload irq; 660 unsigned long pending_irqs; 661 }; 662 663 #define FIRQ_LIST_IO_ISC_0 0 664 #define FIRQ_LIST_IO_ISC_1 1 665 #define FIRQ_LIST_IO_ISC_2 2 666 #define FIRQ_LIST_IO_ISC_3 3 667 #define FIRQ_LIST_IO_ISC_4 4 668 #define FIRQ_LIST_IO_ISC_5 5 669 #define FIRQ_LIST_IO_ISC_6 6 670 #define FIRQ_LIST_IO_ISC_7 7 671 #define FIRQ_LIST_PFAULT 8 672 #define FIRQ_LIST_VIRTIO 9 673 #define FIRQ_LIST_COUNT 10 674 #define FIRQ_CNTR_IO 0 675 #define FIRQ_CNTR_SERVICE 1 676 #define FIRQ_CNTR_VIRTIO 2 677 #define FIRQ_CNTR_PFAULT 3 678 #define FIRQ_MAX_COUNT 4 679 680 /* mask the AIS mode for a given ISC */ 681 #define AIS_MODE_MASK(isc) (0x80 >> isc) 682 683 #define KVM_S390_AIS_MODE_ALL 0 684 #define KVM_S390_AIS_MODE_SINGLE 1 685 686 struct kvm_s390_float_interrupt { 687 unsigned long pending_irqs; 688 unsigned long masked_irqs; 689 spinlock_t lock; 690 struct list_head lists[FIRQ_LIST_COUNT]; 691 int counters[FIRQ_MAX_COUNT]; 692 struct kvm_s390_mchk_info mchk; 693 struct kvm_s390_ext_info srv_signal; 694 int next_rr_cpu; 695 struct mutex ais_lock; 696 u8 simm; 697 u8 nimm; 698 }; 699 700 struct kvm_hw_wp_info_arch { 701 unsigned long addr; 702 unsigned long phys_addr; 703 int len; 704 char *old_data; 705 }; 706 707 struct kvm_hw_bp_info_arch { 708 unsigned long addr; 709 int len; 710 }; 711 712 /* 713 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 714 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 715 * arch/s390/include/uapi/asm/kvm.h 716 */ 717 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 718 719 #define guestdbg_enabled(vcpu) \ 720 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 721 #define guestdbg_sstep_enabled(vcpu) \ 722 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 723 #define guestdbg_hw_bp_enabled(vcpu) \ 724 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 725 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 726 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 727 728 #define KVM_GUESTDBG_VALID_MASK \ 729 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\ 730 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING) 731 732 struct kvm_guestdbg_info_arch { 733 unsigned long cr0; 734 unsigned long cr9; 735 unsigned long cr10; 736 unsigned long cr11; 737 struct kvm_hw_bp_info_arch *hw_bp_info; 738 struct kvm_hw_wp_info_arch *hw_wp_info; 739 int nr_hw_bp; 740 int nr_hw_wp; 741 unsigned long last_bp; 742 }; 743 744 struct kvm_s390_pv_vcpu { 745 u64 handle; 746 unsigned long stor_base; 747 }; 748 749 struct kvm_vcpu_arch { 750 struct kvm_s390_sie_block *sie_block; 751 /* if vsie is active, currently executed shadow sie control block */ 752 struct kvm_s390_sie_block *vsie_block; 753 unsigned int host_acrs[NUM_ACRS]; 754 struct gs_cb *host_gscb; 755 struct kvm_s390_local_interrupt local_int; 756 struct hrtimer ckc_timer; 757 struct kvm_s390_pgm_info pgm; 758 struct gmap *gmap; 759 struct kvm_guestdbg_info_arch guestdbg; 760 unsigned long pfault_token; 761 unsigned long pfault_select; 762 unsigned long pfault_compare; 763 bool cputm_enabled; 764 /* 765 * The seqcount protects updates to cputm_start and sie_block.cputm, 766 * this way we can have non-blocking reads with consistent values. 767 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 768 * values and to start/stop/enable/disable cpu timer accounting. 769 */ 770 seqcount_t cputm_seqcount; 771 __u64 cputm_start; 772 bool gs_enabled; 773 bool skey_enabled; 774 /* Indicator if the access registers have been loaded from guest */ 775 bool acrs_loaded; 776 struct kvm_s390_pv_vcpu pv; 777 union diag318_info diag318_info; 778 }; 779 780 struct kvm_vm_stat { 781 struct kvm_vm_stat_generic generic; 782 u64 inject_io; 783 u64 inject_float_mchk; 784 u64 inject_pfault_done; 785 u64 inject_service_signal; 786 u64 inject_virtio; 787 u64 aen_forward; 788 u64 gmap_shadow_create; 789 u64 gmap_shadow_reuse; 790 u64 gmap_shadow_r1_entry; 791 u64 gmap_shadow_r2_entry; 792 u64 gmap_shadow_r3_entry; 793 u64 gmap_shadow_sg_entry; 794 u64 gmap_shadow_pg_entry; 795 }; 796 797 struct kvm_arch_memory_slot { 798 }; 799 800 struct s390_map_info { 801 struct list_head list; 802 __u64 guest_addr; 803 __u64 addr; 804 struct page *page; 805 }; 806 807 struct s390_io_adapter { 808 unsigned int id; 809 int isc; 810 bool maskable; 811 bool masked; 812 bool swap; 813 bool suppressible; 814 }; 815 816 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 817 #define MAX_S390_ADAPTER_MAPS 256 818 819 /* maximum size of facilities and facility mask is 2k bytes */ 820 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 821 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 822 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 823 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 824 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 825 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 826 827 struct kvm_s390_cpu_model { 828 /* facility mask supported by kvm & hosting machine */ 829 __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64]; 830 struct kvm_s390_vm_cpu_subfunc subfuncs; 831 /* facility list requested by guest (in dma page) */ 832 __u64 *fac_list; 833 u64 cpuid; 834 unsigned short ibc; 835 /* subset of available UV-features for pv-guests enabled by user space */ 836 struct kvm_s390_vm_cpu_uv_feat uv_feat_guest; 837 }; 838 839 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu); 840 841 struct kvm_s390_crypto { 842 struct kvm_s390_crypto_cb *crycb; 843 struct rw_semaphore pqap_hook_rwsem; 844 crypto_hook *pqap_hook; 845 __u32 crycbd; 846 __u8 aes_kw; 847 __u8 dea_kw; 848 __u8 apie; 849 }; 850 851 #define APCB0_MASK_SIZE 1 852 struct kvm_s390_apcb0 { 853 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 854 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 855 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 856 __u64 reserved18; /* 0x0018 */ 857 }; 858 859 #define APCB1_MASK_SIZE 4 860 struct kvm_s390_apcb1 { 861 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 862 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 863 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 864 __u64 reserved60[4]; /* 0x0060 */ 865 }; 866 867 struct kvm_s390_crypto_cb { 868 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 869 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 870 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 871 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 872 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 873 }; 874 875 struct kvm_s390_gisa { 876 union { 877 struct { /* common to all formats */ 878 u32 next_alert; 879 u8 ipm; 880 u8 reserved01[2]; 881 u8 iam; 882 }; 883 struct { /* format 0 */ 884 u32 next_alert; 885 u8 ipm; 886 u8 reserved01; 887 u8 : 6; 888 u8 g : 1; 889 u8 c : 1; 890 u8 iam; 891 u8 reserved02[4]; 892 u32 airq_count; 893 } g0; 894 struct { /* format 1 */ 895 u32 next_alert; 896 u8 ipm; 897 u8 simm; 898 u8 nimm; 899 u8 iam; 900 u8 aism[8]; 901 u8 : 6; 902 u8 g : 1; 903 u8 c : 1; 904 u8 reserved03[11]; 905 u32 airq_count; 906 } g1; 907 struct { 908 u64 word[4]; 909 } u64; 910 }; 911 }; 912 913 struct kvm_s390_gib { 914 u32 alert_list_origin; 915 u32 reserved01; 916 u8:5; 917 u8 nisc:3; 918 u8 reserved03[3]; 919 u32 reserved04[5]; 920 }; 921 922 /* 923 * sie_page2 has to be allocated as DMA because fac_list, crycb and 924 * gisa need 31bit addresses in the sie control block. 925 */ 926 struct sie_page2 { 927 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 928 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 929 struct kvm_s390_gisa gisa; /* 0x0900 */ 930 struct kvm *kvm; /* 0x0920 */ 931 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 932 }; 933 934 struct kvm_s390_vsie { 935 struct mutex mutex; 936 struct radix_tree_root addr_to_page; 937 int page_count; 938 int next; 939 struct page *pages[KVM_MAX_VCPUS]; 940 }; 941 942 struct kvm_s390_gisa_iam { 943 u8 mask; 944 spinlock_t ref_lock; 945 u32 ref_count[MAX_ISC + 1]; 946 }; 947 948 struct kvm_s390_gisa_interrupt { 949 struct kvm_s390_gisa *origin; 950 struct kvm_s390_gisa_iam alert; 951 struct hrtimer timer; 952 u64 expires; 953 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 954 }; 955 956 struct kvm_s390_pv { 957 u64 handle; 958 u64 guest_len; 959 unsigned long stor_base; 960 void *stor_var; 961 bool dumping; 962 void *set_aside; 963 struct list_head need_cleanup; 964 struct mmu_notifier mmu_notifier; 965 }; 966 967 struct kvm_arch{ 968 void *sca; 969 int use_esca; 970 rwlock_t sca_lock; 971 debug_info_t *dbf; 972 struct kvm_s390_float_interrupt float_int; 973 struct kvm_device *flic; 974 struct gmap *gmap; 975 unsigned long mem_limit; 976 int css_support; 977 int use_irqchip; 978 int use_cmma; 979 int use_pfmfi; 980 int use_skf; 981 int use_zpci_interp; 982 int user_cpu_state_ctrl; 983 int user_sigp; 984 int user_stsi; 985 int user_instr0; 986 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 987 wait_queue_head_t ipte_wq; 988 int ipte_lock_count; 989 struct mutex ipte_mutex; 990 spinlock_t start_stop_lock; 991 struct sie_page2 *sie_page2; 992 struct kvm_s390_cpu_model model; 993 struct kvm_s390_crypto crypto; 994 struct kvm_s390_vsie vsie; 995 u8 epdx; 996 u64 epoch; 997 int migration_mode; 998 atomic64_t cmma_dirty_pages; 999 /* subset of available cpu features enabled by user space */ 1000 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 1001 /* indexed by vcpu_idx */ 1002 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 1003 struct kvm_s390_gisa_interrupt gisa_int; 1004 struct kvm_s390_pv pv; 1005 struct list_head kzdev_list; 1006 spinlock_t kzdev_list_lock; 1007 }; 1008 1009 #define KVM_HVA_ERR_BAD (-1UL) 1010 #define KVM_HVA_ERR_RO_BAD (-2UL) 1011 1012 static inline bool kvm_is_error_hva(unsigned long addr) 1013 { 1014 return IS_ERR_VALUE(addr); 1015 } 1016 1017 #define ASYNC_PF_PER_VCPU 64 1018 struct kvm_arch_async_pf { 1019 unsigned long pfault_token; 1020 }; 1021 1022 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 1023 1024 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 1025 struct kvm_async_pf *work); 1026 1027 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 1028 struct kvm_async_pf *work); 1029 1030 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 1031 struct kvm_async_pf *work); 1032 1033 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 1034 1035 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 1036 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 1037 unsigned long *aqm, unsigned long *adm); 1038 1039 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa, 1040 unsigned long gasce); 1041 1042 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce) 1043 { 1044 return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce); 1045 } 1046 1047 extern char sie_exit; 1048 1049 bool kvm_s390_pv_is_protected(struct kvm *kvm); 1050 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu); 1051 1052 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 1053 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 1054 1055 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 1056 static inline void kvm_arch_free_memslot(struct kvm *kvm, 1057 struct kvm_memory_slot *slot) {} 1058 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 1059 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 1060 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 1061 struct kvm_memory_slot *slot) {} 1062 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 1063 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 1064 1065 #define __KVM_HAVE_ARCH_VM_FREE 1066 void kvm_arch_free_vm(struct kvm *kvm); 1067 1068 struct zpci_kvm_hook { 1069 int (*kvm_register)(void *opaque, struct kvm *kvm); 1070 void (*kvm_unregister)(void *opaque); 1071 }; 1072 1073 extern struct zpci_kvm_hook zpci_kvm_hook; 1074 1075 #endif 1076