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 #define KVM_INTERNAL_MEM_SLOTS 1 34 35 /* 36 * These seem to be used for allocating ->chip in the routing table, which we 37 * don't use. 1 is as small as we can get to reduce the needed memory. If we 38 * need to look at ->chip later on, we'll need to revisit this. 39 */ 40 #define KVM_NR_IRQCHIPS 1 41 #define KVM_IRQCHIP_NUM_PINS 1 42 #define KVM_HALT_POLL_NS_DEFAULT 50000 43 44 /* s390-specific vcpu->requests bit members */ 45 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0) 46 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1) 47 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2) 48 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3) 49 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4) 50 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5) 51 #define KVM_REQ_REFRESH_GUEST_PREFIX \ 52 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) 53 54 #define SIGP_CTRL_C 0x80 55 #define SIGP_CTRL_SCN_MASK 0x3f 56 57 union bsca_sigp_ctrl { 58 __u8 value; 59 struct { 60 __u8 c : 1; 61 __u8 r : 1; 62 __u8 scn : 6; 63 }; 64 }; 65 66 union esca_sigp_ctrl { 67 __u16 value; 68 struct { 69 __u8 c : 1; 70 __u8 reserved: 7; 71 __u8 scn; 72 }; 73 }; 74 75 struct esca_entry { 76 union esca_sigp_ctrl sigp_ctrl; 77 __u16 reserved1[3]; 78 __u64 sda; 79 __u64 reserved2[6]; 80 }; 81 82 struct bsca_entry { 83 __u8 reserved0; 84 union bsca_sigp_ctrl sigp_ctrl; 85 __u16 reserved[3]; 86 __u64 sda; 87 __u64 reserved2[2]; 88 }; 89 90 union ipte_control { 91 unsigned long val; 92 struct { 93 unsigned long k : 1; 94 unsigned long kh : 31; 95 unsigned long kg : 32; 96 }; 97 }; 98 99 /* 100 * Utility is defined as two bytes but having it four bytes wide 101 * generates more efficient code. Since the following bytes are 102 * reserved this makes no functional difference. 103 */ 104 union sca_utility { 105 __u32 val; 106 struct { 107 __u32 mtcr : 1; 108 __u32 : 31; 109 }; 110 }; 111 112 struct bsca_block { 113 union ipte_control ipte_control; 114 __u64 reserved[5]; 115 __u64 mcn; 116 union sca_utility utility; 117 __u8 reserved2[4]; 118 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 119 }; 120 121 struct esca_block { 122 union ipte_control ipte_control; 123 __u64 reserved1[6]; 124 union sca_utility utility; 125 __u8 reserved2[4]; 126 __u64 mcn[4]; 127 __u64 reserved3[20]; 128 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 129 }; 130 131 /* 132 * This struct is used to store some machine check info from lowcore 133 * for machine checks that happen while the guest is running. 134 * This info in host's lowcore might be overwritten by a second machine 135 * check from host when host is in the machine check's high-level handling. 136 * The size is 24 bytes. 137 */ 138 struct mcck_volatile_info { 139 __u64 mcic; 140 __u64 failing_storage_address; 141 __u32 ext_damage_code; 142 __u32 reserved; 143 }; 144 145 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 146 CR0_MEASUREMENT_ALERT_SUBMASK) 147 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 148 CR14_EXTERNAL_DAMAGE_SUBMASK) 149 150 #define SIDAD_SIZE_MASK 0xff 151 #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK) 152 #define sida_size(sie_block) \ 153 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE) 154 155 #define CPUSTAT_STOPPED 0x80000000 156 #define CPUSTAT_WAIT 0x10000000 157 #define CPUSTAT_ECALL_PEND 0x08000000 158 #define CPUSTAT_STOP_INT 0x04000000 159 #define CPUSTAT_IO_INT 0x02000000 160 #define CPUSTAT_EXT_INT 0x01000000 161 #define CPUSTAT_RUNNING 0x00800000 162 #define CPUSTAT_RETAINED 0x00400000 163 #define CPUSTAT_TIMING_SUB 0x00020000 164 #define CPUSTAT_SIE_SUB 0x00010000 165 #define CPUSTAT_RRF 0x00008000 166 #define CPUSTAT_SLSV 0x00004000 167 #define CPUSTAT_SLSR 0x00002000 168 #define CPUSTAT_ZARCH 0x00000800 169 #define CPUSTAT_MCDS 0x00000100 170 #define CPUSTAT_KSS 0x00000200 171 #define CPUSTAT_SM 0x00000080 172 #define CPUSTAT_IBS 0x00000040 173 #define CPUSTAT_GED2 0x00000010 174 #define CPUSTAT_G 0x00000008 175 #define CPUSTAT_GED 0x00000004 176 #define CPUSTAT_J 0x00000002 177 #define CPUSTAT_P 0x00000001 178 179 struct kvm_s390_sie_block { 180 atomic_t cpuflags; /* 0x0000 */ 181 __u32 : 1; /* 0x0004 */ 182 __u32 prefix : 18; 183 __u32 : 1; 184 __u32 ibc : 12; 185 __u8 reserved08[4]; /* 0x0008 */ 186 #define PROG_IN_SIE (1<<0) 187 __u32 prog0c; /* 0x000c */ 188 union { 189 __u8 reserved10[16]; /* 0x0010 */ 190 struct { 191 __u64 pv_handle_cpu; 192 __u64 pv_handle_config; 193 }; 194 }; 195 #define PROG_BLOCK_SIE (1<<0) 196 #define PROG_REQUEST (1<<1) 197 atomic_t prog20; /* 0x0020 */ 198 __u8 reserved24[4]; /* 0x0024 */ 199 __u64 cputm; /* 0x0028 */ 200 __u64 ckc; /* 0x0030 */ 201 __u64 epoch; /* 0x0038 */ 202 __u32 svcc; /* 0x0040 */ 203 #define LCTL_CR0 0x8000 204 #define LCTL_CR6 0x0200 205 #define LCTL_CR9 0x0040 206 #define LCTL_CR10 0x0020 207 #define LCTL_CR11 0x0010 208 #define LCTL_CR14 0x0002 209 __u16 lctl; /* 0x0044 */ 210 __s16 icpua; /* 0x0046 */ 211 #define ICTL_OPEREXC 0x80000000 212 #define ICTL_PINT 0x20000000 213 #define ICTL_LPSW 0x00400000 214 #define ICTL_STCTL 0x00040000 215 #define ICTL_ISKE 0x00004000 216 #define ICTL_SSKE 0x00002000 217 #define ICTL_RRBE 0x00001000 218 #define ICTL_TPROT 0x00000200 219 __u32 ictl; /* 0x0048 */ 220 #define ECA_CEI 0x80000000 221 #define ECA_IB 0x40000000 222 #define ECA_SIGPI 0x10000000 223 #define ECA_MVPGI 0x01000000 224 #define ECA_AIV 0x00200000 225 #define ECA_VX 0x00020000 226 #define ECA_PROTEXCI 0x00002000 227 #define ECA_APIE 0x00000008 228 #define ECA_SII 0x00000001 229 __u32 eca; /* 0x004c */ 230 #define ICPT_INST 0x04 231 #define ICPT_PROGI 0x08 232 #define ICPT_INSTPROGI 0x0C 233 #define ICPT_EXTREQ 0x10 234 #define ICPT_EXTINT 0x14 235 #define ICPT_IOREQ 0x18 236 #define ICPT_WAIT 0x1c 237 #define ICPT_VALIDITY 0x20 238 #define ICPT_STOP 0x28 239 #define ICPT_OPEREXC 0x2C 240 #define ICPT_PARTEXEC 0x38 241 #define ICPT_IOINST 0x40 242 #define ICPT_KSS 0x5c 243 #define ICPT_MCHKREQ 0x60 244 #define ICPT_INT_ENABLE 0x64 245 #define ICPT_PV_INSTR 0x68 246 #define ICPT_PV_NOTIFY 0x6c 247 #define ICPT_PV_PREF 0x70 248 __u8 icptcode; /* 0x0050 */ 249 __u8 icptstatus; /* 0x0051 */ 250 __u16 ihcpu; /* 0x0052 */ 251 __u8 reserved54; /* 0x0054 */ 252 #define IICTL_CODE_NONE 0x00 253 #define IICTL_CODE_MCHK 0x01 254 #define IICTL_CODE_EXT 0x02 255 #define IICTL_CODE_IO 0x03 256 #define IICTL_CODE_RESTART 0x04 257 #define IICTL_CODE_SPECIFICATION 0x10 258 #define IICTL_CODE_OPERAND 0x11 259 __u8 iictl; /* 0x0055 */ 260 __u16 ipa; /* 0x0056 */ 261 __u32 ipb; /* 0x0058 */ 262 __u32 scaoh; /* 0x005c */ 263 #define FPF_BPBC 0x20 264 __u8 fpf; /* 0x0060 */ 265 #define ECB_GS 0x40 266 #define ECB_TE 0x10 267 #define ECB_SPECI 0x08 268 #define ECB_SRSI 0x04 269 #define ECB_HOSTPROTINT 0x02 270 #define ECB_PTF 0x01 271 __u8 ecb; /* 0x0061 */ 272 #define ECB2_CMMA 0x80 273 #define ECB2_IEP 0x20 274 #define ECB2_PFMFI 0x08 275 #define ECB2_ESCA 0x04 276 #define ECB2_ZPCI_LSI 0x02 277 __u8 ecb2; /* 0x0062 */ 278 #define ECB3_AISI 0x20 279 #define ECB3_AISII 0x10 280 #define ECB3_DEA 0x08 281 #define ECB3_AES 0x04 282 #define ECB3_RI 0x01 283 __u8 ecb3; /* 0x0063 */ 284 #define ESCA_SCAOL_MASK ~0x3fU 285 __u32 scaol; /* 0x0064 */ 286 __u8 sdf; /* 0x0068 */ 287 __u8 epdx; /* 0x0069 */ 288 __u8 cpnc; /* 0x006a */ 289 __u8 reserved6b; /* 0x006b */ 290 __u32 todpr; /* 0x006c */ 291 #define GISA_FORMAT1 0x00000001 292 __u32 gd; /* 0x0070 */ 293 __u8 reserved74[12]; /* 0x0074 */ 294 __u64 mso; /* 0x0080 */ 295 __u64 msl; /* 0x0088 */ 296 psw_t gpsw; /* 0x0090 */ 297 __u64 gg14; /* 0x00a0 */ 298 __u64 gg15; /* 0x00a8 */ 299 __u8 reservedb0[8]; /* 0x00b0 */ 300 #define HPID_KVM 0x4 301 #define HPID_VSIE 0x5 302 __u8 hpid; /* 0x00b8 */ 303 __u8 reservedb9[7]; /* 0x00b9 */ 304 union { 305 struct { 306 __u32 eiparams; /* 0x00c0 */ 307 __u16 extcpuaddr; /* 0x00c4 */ 308 __u16 eic; /* 0x00c6 */ 309 }; 310 __u64 mcic; /* 0x00c0 */ 311 } __packed; 312 __u32 reservedc8; /* 0x00c8 */ 313 union { 314 struct { 315 __u16 pgmilc; /* 0x00cc */ 316 __u16 iprcc; /* 0x00ce */ 317 }; 318 __u32 edc; /* 0x00cc */ 319 } __packed; 320 union { 321 struct { 322 __u32 dxc; /* 0x00d0 */ 323 __u16 mcn; /* 0x00d4 */ 324 __u8 perc; /* 0x00d6 */ 325 __u8 peratmid; /* 0x00d7 */ 326 }; 327 __u64 faddr; /* 0x00d0 */ 328 } __packed; 329 __u64 peraddr; /* 0x00d8 */ 330 __u8 eai; /* 0x00e0 */ 331 __u8 peraid; /* 0x00e1 */ 332 __u8 oai; /* 0x00e2 */ 333 __u8 armid; /* 0x00e3 */ 334 __u8 reservede4[4]; /* 0x00e4 */ 335 union { 336 __u64 tecmc; /* 0x00e8 */ 337 struct { 338 __u16 subchannel_id; /* 0x00e8 */ 339 __u16 subchannel_nr; /* 0x00ea */ 340 __u32 io_int_parm; /* 0x00ec */ 341 __u32 io_int_word; /* 0x00f0 */ 342 }; 343 } __packed; 344 __u8 reservedf4[8]; /* 0x00f4 */ 345 #define CRYCB_FORMAT_MASK 0x00000003 346 #define CRYCB_FORMAT0 0x00000000 347 #define CRYCB_FORMAT1 0x00000001 348 #define CRYCB_FORMAT2 0x00000003 349 __u32 crycbd; /* 0x00fc */ 350 __u64 gcr[16]; /* 0x0100 */ 351 union { 352 __u64 gbea; /* 0x0180 */ 353 __u64 sidad; 354 }; 355 __u8 reserved188[8]; /* 0x0188 */ 356 __u64 sdnxo; /* 0x0190 */ 357 __u8 reserved198[8]; /* 0x0198 */ 358 __u32 fac; /* 0x01a0 */ 359 __u8 reserved1a4[20]; /* 0x01a4 */ 360 __u64 cbrlo; /* 0x01b8 */ 361 __u8 reserved1c0[8]; /* 0x01c0 */ 362 #define ECD_HOSTREGMGMT 0x20000000 363 #define ECD_MEF 0x08000000 364 #define ECD_ETOKENF 0x02000000 365 #define ECD_ECC 0x00200000 366 #define ECD_HMAC 0x00004000 367 __u32 ecd; /* 0x01c8 */ 368 __u8 reserved1cc[18]; /* 0x01cc */ 369 __u64 pp; /* 0x01de */ 370 __u8 reserved1e6[2]; /* 0x01e6 */ 371 __u64 itdba; /* 0x01e8 */ 372 __u64 riccbd; /* 0x01f0 */ 373 __u64 gvrd; /* 0x01f8 */ 374 } __packed __aligned(512); 375 376 struct kvm_s390_itdb { 377 __u8 data[256]; 378 }; 379 380 struct sie_page { 381 struct kvm_s390_sie_block sie_block; 382 struct mcck_volatile_info mcck_info; /* 0x0200 */ 383 __u8 reserved218[360]; /* 0x0218 */ 384 __u64 pv_grregs[16]; /* 0x0380 */ 385 __u8 reserved400[512]; /* 0x0400 */ 386 struct kvm_s390_itdb itdb; /* 0x0600 */ 387 __u8 reserved700[2304]; /* 0x0700 */ 388 }; 389 390 struct kvm_vcpu_stat { 391 struct kvm_vcpu_stat_generic generic; 392 u64 exit_userspace; 393 u64 exit_null; 394 u64 exit_external_request; 395 u64 exit_io_request; 396 u64 exit_external_interrupt; 397 u64 exit_stop_request; 398 u64 exit_validity; 399 u64 exit_instruction; 400 u64 exit_pei; 401 u64 halt_no_poll_steal; 402 u64 instruction_lctl; 403 u64 instruction_lctlg; 404 u64 instruction_stctl; 405 u64 instruction_stctg; 406 u64 exit_program_interruption; 407 u64 exit_instr_and_program; 408 u64 exit_operation_exception; 409 u64 deliver_ckc; 410 u64 deliver_cputm; 411 u64 deliver_external_call; 412 u64 deliver_emergency_signal; 413 u64 deliver_service_signal; 414 u64 deliver_virtio; 415 u64 deliver_stop_signal; 416 u64 deliver_prefix_signal; 417 u64 deliver_restart_signal; 418 u64 deliver_program; 419 u64 deliver_io; 420 u64 deliver_machine_check; 421 u64 exit_wait_state; 422 u64 inject_ckc; 423 u64 inject_cputm; 424 u64 inject_external_call; 425 u64 inject_emergency_signal; 426 u64 inject_mchk; 427 u64 inject_pfault_init; 428 u64 inject_program; 429 u64 inject_restart; 430 u64 inject_set_prefix; 431 u64 inject_stop_signal; 432 u64 instruction_epsw; 433 u64 instruction_gs; 434 u64 instruction_io_other; 435 u64 instruction_lpsw; 436 u64 instruction_lpswe; 437 u64 instruction_lpswey; 438 u64 instruction_pfmf; 439 u64 instruction_ptff; 440 u64 instruction_sck; 441 u64 instruction_sckpf; 442 u64 instruction_stidp; 443 u64 instruction_spx; 444 u64 instruction_stpx; 445 u64 instruction_stap; 446 u64 instruction_iske; 447 u64 instruction_ri; 448 u64 instruction_rrbe; 449 u64 instruction_sske; 450 u64 instruction_ipte_interlock; 451 u64 instruction_stsi; 452 u64 instruction_stfl; 453 u64 instruction_tb; 454 u64 instruction_tpi; 455 u64 instruction_tprot; 456 u64 instruction_tsch; 457 u64 instruction_sie; 458 u64 instruction_essa; 459 u64 instruction_sthyi; 460 u64 instruction_sigp_sense; 461 u64 instruction_sigp_sense_running; 462 u64 instruction_sigp_external_call; 463 u64 instruction_sigp_emergency; 464 u64 instruction_sigp_cond_emergency; 465 u64 instruction_sigp_start; 466 u64 instruction_sigp_stop; 467 u64 instruction_sigp_stop_store_status; 468 u64 instruction_sigp_store_status; 469 u64 instruction_sigp_store_adtl_status; 470 u64 instruction_sigp_arch; 471 u64 instruction_sigp_prefix; 472 u64 instruction_sigp_restart; 473 u64 instruction_sigp_init_cpu_reset; 474 u64 instruction_sigp_cpu_reset; 475 u64 instruction_sigp_unknown; 476 u64 instruction_diagnose_10; 477 u64 instruction_diagnose_44; 478 u64 instruction_diagnose_9c; 479 u64 diag_9c_ignored; 480 u64 diag_9c_forward; 481 u64 instruction_diagnose_258; 482 u64 instruction_diagnose_308; 483 u64 instruction_diagnose_500; 484 u64 instruction_diagnose_other; 485 u64 pfault_sync; 486 }; 487 488 #define PGM_OPERATION 0x01 489 #define PGM_PRIVILEGED_OP 0x02 490 #define PGM_EXECUTE 0x03 491 #define PGM_PROTECTION 0x04 492 #define PGM_ADDRESSING 0x05 493 #define PGM_SPECIFICATION 0x06 494 #define PGM_DATA 0x07 495 #define PGM_FIXED_POINT_OVERFLOW 0x08 496 #define PGM_FIXED_POINT_DIVIDE 0x09 497 #define PGM_DECIMAL_OVERFLOW 0x0a 498 #define PGM_DECIMAL_DIVIDE 0x0b 499 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 500 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 501 #define PGM_HFP_SIGNIFICANCE 0x0e 502 #define PGM_HFP_DIVIDE 0x0f 503 #define PGM_SEGMENT_TRANSLATION 0x10 504 #define PGM_PAGE_TRANSLATION 0x11 505 #define PGM_TRANSLATION_SPEC 0x12 506 #define PGM_SPECIAL_OPERATION 0x13 507 #define PGM_OPERAND 0x15 508 #define PGM_TRACE_TABEL 0x16 509 #define PGM_VECTOR_PROCESSING 0x1b 510 #define PGM_SPACE_SWITCH 0x1c 511 #define PGM_HFP_SQUARE_ROOT 0x1d 512 #define PGM_PC_TRANSLATION_SPEC 0x1f 513 #define PGM_AFX_TRANSLATION 0x20 514 #define PGM_ASX_TRANSLATION 0x21 515 #define PGM_LX_TRANSLATION 0x22 516 #define PGM_EX_TRANSLATION 0x23 517 #define PGM_PRIMARY_AUTHORITY 0x24 518 #define PGM_SECONDARY_AUTHORITY 0x25 519 #define PGM_LFX_TRANSLATION 0x26 520 #define PGM_LSX_TRANSLATION 0x27 521 #define PGM_ALET_SPECIFICATION 0x28 522 #define PGM_ALEN_TRANSLATION 0x29 523 #define PGM_ALE_SEQUENCE 0x2a 524 #define PGM_ASTE_VALIDITY 0x2b 525 #define PGM_ASTE_SEQUENCE 0x2c 526 #define PGM_EXTENDED_AUTHORITY 0x2d 527 #define PGM_LSTE_SEQUENCE 0x2e 528 #define PGM_ASTE_INSTANCE 0x2f 529 #define PGM_STACK_FULL 0x30 530 #define PGM_STACK_EMPTY 0x31 531 #define PGM_STACK_SPECIFICATION 0x32 532 #define PGM_STACK_TYPE 0x33 533 #define PGM_STACK_OPERATION 0x34 534 #define PGM_ASCE_TYPE 0x38 535 #define PGM_REGION_FIRST_TRANS 0x39 536 #define PGM_REGION_SECOND_TRANS 0x3a 537 #define PGM_REGION_THIRD_TRANS 0x3b 538 #define PGM_SECURE_STORAGE_ACCESS 0x3d 539 #define PGM_NON_SECURE_STORAGE_ACCESS 0x3e 540 #define PGM_SECURE_STORAGE_VIOLATION 0x3f 541 #define PGM_MONITOR 0x40 542 #define PGM_PER 0x80 543 #define PGM_CRYPTO_OPERATION 0x119 544 545 /* irq types in ascend order of priorities */ 546 enum irq_types { 547 IRQ_PEND_SET_PREFIX = 0, 548 IRQ_PEND_RESTART, 549 IRQ_PEND_SIGP_STOP, 550 IRQ_PEND_IO_ISC_7, 551 IRQ_PEND_IO_ISC_6, 552 IRQ_PEND_IO_ISC_5, 553 IRQ_PEND_IO_ISC_4, 554 IRQ_PEND_IO_ISC_3, 555 IRQ_PEND_IO_ISC_2, 556 IRQ_PEND_IO_ISC_1, 557 IRQ_PEND_IO_ISC_0, 558 IRQ_PEND_VIRTIO, 559 IRQ_PEND_PFAULT_DONE, 560 IRQ_PEND_PFAULT_INIT, 561 IRQ_PEND_EXT_HOST, 562 IRQ_PEND_EXT_SERVICE, 563 IRQ_PEND_EXT_SERVICE_EV, 564 IRQ_PEND_EXT_TIMING, 565 IRQ_PEND_EXT_CPU_TIMER, 566 IRQ_PEND_EXT_CLOCK_COMP, 567 IRQ_PEND_EXT_EXTERNAL, 568 IRQ_PEND_EXT_EMERGENCY, 569 IRQ_PEND_EXT_MALFUNC, 570 IRQ_PEND_EXT_IRQ_KEY, 571 IRQ_PEND_MCHK_REP, 572 IRQ_PEND_PROG, 573 IRQ_PEND_SVC, 574 IRQ_PEND_MCHK_EX, 575 IRQ_PEND_COUNT 576 }; 577 578 /* We have 2M for virtio device descriptor pages. Smallest amount of 579 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 580 */ 581 #define KVM_S390_MAX_VIRTIO_IRQS 87381 582 583 /* 584 * Repressible (non-floating) machine check interrupts 585 * subclass bits in MCIC 586 */ 587 #define MCHK_EXTD_BIT 58 588 #define MCHK_DEGR_BIT 56 589 #define MCHK_WARN_BIT 55 590 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 591 (1UL << MCHK_EXTD_BIT) | \ 592 (1UL << MCHK_WARN_BIT)) 593 594 /* Exigent machine check interrupts subclass bits in MCIC */ 595 #define MCHK_SD_BIT 63 596 #define MCHK_PD_BIT 62 597 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 598 599 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 600 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 601 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 602 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 603 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 604 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 605 (1UL << IRQ_PEND_EXT_TIMING) | \ 606 (1UL << IRQ_PEND_EXT_HOST) | \ 607 (1UL << IRQ_PEND_EXT_SERVICE) | \ 608 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 609 (1UL << IRQ_PEND_VIRTIO) | \ 610 (1UL << IRQ_PEND_PFAULT_INIT) | \ 611 (1UL << IRQ_PEND_PFAULT_DONE)) 612 613 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 614 (1UL << IRQ_PEND_IO_ISC_1) | \ 615 (1UL << IRQ_PEND_IO_ISC_2) | \ 616 (1UL << IRQ_PEND_IO_ISC_3) | \ 617 (1UL << IRQ_PEND_IO_ISC_4) | \ 618 (1UL << IRQ_PEND_IO_ISC_5) | \ 619 (1UL << IRQ_PEND_IO_ISC_6) | \ 620 (1UL << IRQ_PEND_IO_ISC_7)) 621 622 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 623 (1UL << IRQ_PEND_MCHK_EX)) 624 625 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 626 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 627 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 628 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 629 (1UL << IRQ_PEND_EXT_SERVICE) | \ 630 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 631 632 struct kvm_s390_interrupt_info { 633 struct list_head list; 634 u64 type; 635 union { 636 struct kvm_s390_io_info io; 637 struct kvm_s390_ext_info ext; 638 struct kvm_s390_pgm_info pgm; 639 struct kvm_s390_emerg_info emerg; 640 struct kvm_s390_extcall_info extcall; 641 struct kvm_s390_prefix_info prefix; 642 struct kvm_s390_stop_info stop; 643 struct kvm_s390_mchk_info mchk; 644 }; 645 }; 646 647 struct kvm_s390_irq_payload { 648 struct kvm_s390_io_info io; 649 struct kvm_s390_ext_info ext; 650 struct kvm_s390_pgm_info pgm; 651 struct kvm_s390_emerg_info emerg; 652 struct kvm_s390_extcall_info extcall; 653 struct kvm_s390_prefix_info prefix; 654 struct kvm_s390_stop_info stop; 655 struct kvm_s390_mchk_info mchk; 656 }; 657 658 struct kvm_s390_local_interrupt { 659 spinlock_t lock; 660 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 661 struct kvm_s390_irq_payload irq; 662 unsigned long pending_irqs; 663 }; 664 665 #define FIRQ_LIST_IO_ISC_0 0 666 #define FIRQ_LIST_IO_ISC_1 1 667 #define FIRQ_LIST_IO_ISC_2 2 668 #define FIRQ_LIST_IO_ISC_3 3 669 #define FIRQ_LIST_IO_ISC_4 4 670 #define FIRQ_LIST_IO_ISC_5 5 671 #define FIRQ_LIST_IO_ISC_6 6 672 #define FIRQ_LIST_IO_ISC_7 7 673 #define FIRQ_LIST_PFAULT 8 674 #define FIRQ_LIST_VIRTIO 9 675 #define FIRQ_LIST_COUNT 10 676 #define FIRQ_CNTR_IO 0 677 #define FIRQ_CNTR_SERVICE 1 678 #define FIRQ_CNTR_VIRTIO 2 679 #define FIRQ_CNTR_PFAULT 3 680 #define FIRQ_MAX_COUNT 4 681 682 /* mask the AIS mode for a given ISC */ 683 #define AIS_MODE_MASK(isc) (0x80 >> isc) 684 685 #define KVM_S390_AIS_MODE_ALL 0 686 #define KVM_S390_AIS_MODE_SINGLE 1 687 688 struct kvm_s390_float_interrupt { 689 unsigned long pending_irqs; 690 unsigned long masked_irqs; 691 spinlock_t lock; 692 struct list_head lists[FIRQ_LIST_COUNT]; 693 int counters[FIRQ_MAX_COUNT]; 694 struct kvm_s390_mchk_info mchk; 695 struct kvm_s390_ext_info srv_signal; 696 int next_rr_cpu; 697 struct mutex ais_lock; 698 u8 simm; 699 u8 nimm; 700 }; 701 702 struct kvm_hw_wp_info_arch { 703 unsigned long addr; 704 unsigned long phys_addr; 705 int len; 706 char *old_data; 707 }; 708 709 struct kvm_hw_bp_info_arch { 710 unsigned long addr; 711 int len; 712 }; 713 714 /* 715 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 716 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 717 * arch/s390/include/uapi/asm/kvm.h 718 */ 719 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 720 721 #define guestdbg_enabled(vcpu) \ 722 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 723 #define guestdbg_sstep_enabled(vcpu) \ 724 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 725 #define guestdbg_hw_bp_enabled(vcpu) \ 726 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 727 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 728 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 729 730 #define KVM_GUESTDBG_VALID_MASK \ 731 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\ 732 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING) 733 734 struct kvm_guestdbg_info_arch { 735 unsigned long cr0; 736 unsigned long cr9; 737 unsigned long cr10; 738 unsigned long cr11; 739 struct kvm_hw_bp_info_arch *hw_bp_info; 740 struct kvm_hw_wp_info_arch *hw_wp_info; 741 int nr_hw_bp; 742 int nr_hw_wp; 743 unsigned long last_bp; 744 }; 745 746 struct kvm_s390_pv_vcpu { 747 u64 handle; 748 unsigned long stor_base; 749 }; 750 751 struct kvm_vcpu_arch { 752 struct kvm_s390_sie_block *sie_block; 753 /* if vsie is active, currently executed shadow sie control block */ 754 struct kvm_s390_sie_block *vsie_block; 755 unsigned int host_acrs[NUM_ACRS]; 756 struct gs_cb *host_gscb; 757 struct kvm_s390_local_interrupt local_int; 758 struct hrtimer ckc_timer; 759 struct kvm_s390_pgm_info pgm; 760 struct gmap *gmap; 761 struct kvm_guestdbg_info_arch guestdbg; 762 unsigned long pfault_token; 763 unsigned long pfault_select; 764 unsigned long pfault_compare; 765 bool cputm_enabled; 766 /* 767 * The seqcount protects updates to cputm_start and sie_block.cputm, 768 * this way we can have non-blocking reads with consistent values. 769 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 770 * values and to start/stop/enable/disable cpu timer accounting. 771 */ 772 seqcount_t cputm_seqcount; 773 __u64 cputm_start; 774 bool gs_enabled; 775 bool skey_enabled; 776 /* Indicator if the access registers have been loaded from guest */ 777 bool acrs_loaded; 778 struct kvm_s390_pv_vcpu pv; 779 union diag318_info diag318_info; 780 }; 781 782 struct kvm_vm_stat { 783 struct kvm_vm_stat_generic generic; 784 u64 inject_io; 785 u64 inject_float_mchk; 786 u64 inject_pfault_done; 787 u64 inject_service_signal; 788 u64 inject_virtio; 789 u64 aen_forward; 790 u64 gmap_shadow_create; 791 u64 gmap_shadow_reuse; 792 u64 gmap_shadow_r1_entry; 793 u64 gmap_shadow_r2_entry; 794 u64 gmap_shadow_r3_entry; 795 u64 gmap_shadow_sg_entry; 796 u64 gmap_shadow_pg_entry; 797 }; 798 799 struct kvm_arch_memory_slot { 800 }; 801 802 struct s390_map_info { 803 struct list_head list; 804 __u64 guest_addr; 805 __u64 addr; 806 struct page *page; 807 }; 808 809 struct s390_io_adapter { 810 unsigned int id; 811 int isc; 812 bool maskable; 813 bool masked; 814 bool swap; 815 bool suppressible; 816 }; 817 818 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 819 #define MAX_S390_ADAPTER_MAPS 256 820 821 /* maximum size of facilities and facility mask is 2k bytes */ 822 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 823 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 824 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 825 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 826 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 827 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 828 829 struct kvm_s390_cpu_model { 830 /* facility mask supported by kvm & hosting machine */ 831 __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64]; 832 struct kvm_s390_vm_cpu_subfunc subfuncs; 833 /* facility list requested by guest (in dma page) */ 834 __u64 *fac_list; 835 u64 cpuid; 836 unsigned short ibc; 837 /* subset of available UV-features for pv-guests enabled by user space */ 838 struct kvm_s390_vm_cpu_uv_feat uv_feat_guest; 839 }; 840 841 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu); 842 843 struct kvm_s390_crypto { 844 struct kvm_s390_crypto_cb *crycb; 845 struct rw_semaphore pqap_hook_rwsem; 846 crypto_hook *pqap_hook; 847 __u32 crycbd; 848 __u8 aes_kw; 849 __u8 dea_kw; 850 __u8 apie; 851 }; 852 853 #define APCB0_MASK_SIZE 1 854 struct kvm_s390_apcb0 { 855 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 856 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 857 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 858 __u64 reserved18; /* 0x0018 */ 859 }; 860 861 #define APCB1_MASK_SIZE 4 862 struct kvm_s390_apcb1 { 863 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 864 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 865 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 866 __u64 reserved60[4]; /* 0x0060 */ 867 }; 868 869 struct kvm_s390_crypto_cb { 870 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 871 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 872 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 873 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 874 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 875 }; 876 877 struct kvm_s390_gisa { 878 union { 879 struct { /* common to all formats */ 880 u32 next_alert; 881 u8 ipm; 882 u8 reserved01[2]; 883 u8 iam; 884 }; 885 struct { /* format 0 */ 886 u32 next_alert; 887 u8 ipm; 888 u8 reserved01; 889 u8 : 6; 890 u8 g : 1; 891 u8 c : 1; 892 u8 iam; 893 u8 reserved02[4]; 894 u32 airq_count; 895 } g0; 896 struct { /* format 1 */ 897 u32 next_alert; 898 u8 ipm; 899 u8 simm; 900 u8 nimm; 901 u8 iam; 902 u8 aism[8]; 903 u8 : 6; 904 u8 g : 1; 905 u8 c : 1; 906 u8 reserved03[11]; 907 u32 airq_count; 908 } g1; 909 struct { 910 u64 word[4]; 911 } u64; 912 }; 913 }; 914 915 struct kvm_s390_gib { 916 u32 alert_list_origin; 917 u32 reserved01; 918 u8:5; 919 u8 nisc:3; 920 u8 reserved03[3]; 921 u32 reserved04[5]; 922 }; 923 924 /* 925 * sie_page2 has to be allocated as DMA because fac_list, crycb and 926 * gisa need 31bit addresses in the sie control block. 927 */ 928 struct sie_page2 { 929 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 930 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 931 struct kvm_s390_gisa gisa; /* 0x0900 */ 932 struct kvm *kvm; /* 0x0920 */ 933 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 934 }; 935 936 struct vsie_page; 937 938 struct kvm_s390_vsie { 939 struct mutex mutex; 940 struct radix_tree_root addr_to_page; 941 int page_count; 942 int next; 943 struct vsie_page *pages[KVM_MAX_VCPUS]; 944 }; 945 946 struct kvm_s390_gisa_iam { 947 u8 mask; 948 spinlock_t ref_lock; 949 u32 ref_count[MAX_ISC + 1]; 950 }; 951 952 struct kvm_s390_gisa_interrupt { 953 struct kvm_s390_gisa *origin; 954 struct kvm_s390_gisa_iam alert; 955 struct hrtimer timer; 956 u64 expires; 957 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 958 }; 959 960 struct kvm_s390_pv { 961 u64 handle; 962 u64 guest_len; 963 unsigned long stor_base; 964 void *stor_var; 965 bool dumping; 966 void *set_aside; 967 struct list_head need_cleanup; 968 struct mmu_notifier mmu_notifier; 969 }; 970 971 struct kvm_arch{ 972 void *sca; 973 int use_esca; 974 rwlock_t sca_lock; 975 debug_info_t *dbf; 976 struct kvm_s390_float_interrupt float_int; 977 struct kvm_device *flic; 978 struct gmap *gmap; 979 unsigned long mem_limit; 980 int css_support; 981 int use_irqchip; 982 int use_cmma; 983 int use_pfmfi; 984 int use_skf; 985 int use_zpci_interp; 986 int user_cpu_state_ctrl; 987 int user_sigp; 988 int user_stsi; 989 int user_instr0; 990 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 991 wait_queue_head_t ipte_wq; 992 int ipte_lock_count; 993 struct mutex ipte_mutex; 994 spinlock_t start_stop_lock; 995 struct sie_page2 *sie_page2; 996 struct kvm_s390_cpu_model model; 997 struct kvm_s390_crypto crypto; 998 struct kvm_s390_vsie vsie; 999 u8 epdx; 1000 u64 epoch; 1001 int migration_mode; 1002 atomic64_t cmma_dirty_pages; 1003 /* subset of available cpu features enabled by user space */ 1004 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 1005 /* indexed by vcpu_idx */ 1006 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 1007 struct kvm_s390_gisa_interrupt gisa_int; 1008 struct kvm_s390_pv pv; 1009 struct list_head kzdev_list; 1010 spinlock_t kzdev_list_lock; 1011 }; 1012 1013 #define KVM_HVA_ERR_BAD (-1UL) 1014 #define KVM_HVA_ERR_RO_BAD (-2UL) 1015 1016 static inline bool kvm_is_error_hva(unsigned long addr) 1017 { 1018 return IS_ERR_VALUE(addr); 1019 } 1020 1021 #define ASYNC_PF_PER_VCPU 64 1022 struct kvm_arch_async_pf { 1023 unsigned long pfault_token; 1024 }; 1025 1026 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 1027 1028 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 1029 struct kvm_async_pf *work); 1030 1031 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 1032 struct kvm_async_pf *work); 1033 1034 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 1035 struct kvm_async_pf *work); 1036 1037 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 1038 1039 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 1040 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 1041 unsigned long *aqm, unsigned long *adm); 1042 1043 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa, 1044 unsigned long gasce); 1045 1046 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce) 1047 { 1048 return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce); 1049 } 1050 1051 extern char sie_exit; 1052 1053 bool kvm_s390_pv_is_protected(struct kvm *kvm); 1054 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu); 1055 1056 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 1057 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 1058 1059 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 1060 static inline void kvm_arch_free_memslot(struct kvm *kvm, 1061 struct kvm_memory_slot *slot) {} 1062 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 1063 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 1064 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 1065 struct kvm_memory_slot *slot) {} 1066 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 1067 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 1068 1069 #define __KVM_HAVE_ARCH_VM_FREE 1070 void kvm_arch_free_vm(struct kvm *kvm); 1071 1072 struct zpci_kvm_hook { 1073 int (*kvm_register)(void *opaque, struct kvm *kvm); 1074 void (*kvm_unregister)(void *opaque); 1075 }; 1076 1077 extern struct zpci_kvm_hook zpci_kvm_hook; 1078 1079 #endif 1080