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 union sca_utility { 98 __u16 val; 99 struct { 100 __u16 mtcr : 1; 101 __u16 reserved : 15; 102 }; 103 }; 104 105 struct bsca_block { 106 union ipte_control ipte_control; 107 __u64 reserved[5]; 108 __u64 mcn; 109 union sca_utility utility; 110 __u8 reserved2[6]; 111 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 112 }; 113 114 struct esca_block { 115 union ipte_control ipte_control; 116 __u64 reserved1[6]; 117 union sca_utility utility; 118 __u8 reserved2[6]; 119 __u64 mcn[4]; 120 __u64 reserved3[20]; 121 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 122 }; 123 124 /* 125 * This struct is used to store some machine check info from lowcore 126 * for machine checks that happen while the guest is running. 127 * This info in host's lowcore might be overwritten by a second machine 128 * check from host when host is in the machine check's high-level handling. 129 * The size is 24 bytes. 130 */ 131 struct mcck_volatile_info { 132 __u64 mcic; 133 __u64 failing_storage_address; 134 __u32 ext_damage_code; 135 __u32 reserved; 136 }; 137 138 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 139 CR0_MEASUREMENT_ALERT_SUBMASK) 140 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 141 CR14_EXTERNAL_DAMAGE_SUBMASK) 142 143 #define SIDAD_SIZE_MASK 0xff 144 #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK) 145 #define sida_size(sie_block) \ 146 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE) 147 148 #define CPUSTAT_STOPPED 0x80000000 149 #define CPUSTAT_WAIT 0x10000000 150 #define CPUSTAT_ECALL_PEND 0x08000000 151 #define CPUSTAT_STOP_INT 0x04000000 152 #define CPUSTAT_IO_INT 0x02000000 153 #define CPUSTAT_EXT_INT 0x01000000 154 #define CPUSTAT_RUNNING 0x00800000 155 #define CPUSTAT_RETAINED 0x00400000 156 #define CPUSTAT_TIMING_SUB 0x00020000 157 #define CPUSTAT_SIE_SUB 0x00010000 158 #define CPUSTAT_RRF 0x00008000 159 #define CPUSTAT_SLSV 0x00004000 160 #define CPUSTAT_SLSR 0x00002000 161 #define CPUSTAT_ZARCH 0x00000800 162 #define CPUSTAT_MCDS 0x00000100 163 #define CPUSTAT_KSS 0x00000200 164 #define CPUSTAT_SM 0x00000080 165 #define CPUSTAT_IBS 0x00000040 166 #define CPUSTAT_GED2 0x00000010 167 #define CPUSTAT_G 0x00000008 168 #define CPUSTAT_GED 0x00000004 169 #define CPUSTAT_J 0x00000002 170 #define CPUSTAT_P 0x00000001 171 172 struct kvm_s390_sie_block { 173 atomic_t cpuflags; /* 0x0000 */ 174 __u32 : 1; /* 0x0004 */ 175 __u32 prefix : 18; 176 __u32 : 1; 177 __u32 ibc : 12; 178 __u8 reserved08[4]; /* 0x0008 */ 179 #define PROG_IN_SIE (1<<0) 180 __u32 prog0c; /* 0x000c */ 181 union { 182 __u8 reserved10[16]; /* 0x0010 */ 183 struct { 184 __u64 pv_handle_cpu; 185 __u64 pv_handle_config; 186 }; 187 }; 188 #define PROG_BLOCK_SIE (1<<0) 189 #define PROG_REQUEST (1<<1) 190 atomic_t prog20; /* 0x0020 */ 191 __u8 reserved24[4]; /* 0x0024 */ 192 __u64 cputm; /* 0x0028 */ 193 __u64 ckc; /* 0x0030 */ 194 __u64 epoch; /* 0x0038 */ 195 __u32 svcc; /* 0x0040 */ 196 #define LCTL_CR0 0x8000 197 #define LCTL_CR6 0x0200 198 #define LCTL_CR9 0x0040 199 #define LCTL_CR10 0x0020 200 #define LCTL_CR11 0x0010 201 #define LCTL_CR14 0x0002 202 __u16 lctl; /* 0x0044 */ 203 __s16 icpua; /* 0x0046 */ 204 #define ICTL_OPEREXC 0x80000000 205 #define ICTL_PINT 0x20000000 206 #define ICTL_LPSW 0x00400000 207 #define ICTL_STCTL 0x00040000 208 #define ICTL_ISKE 0x00004000 209 #define ICTL_SSKE 0x00002000 210 #define ICTL_RRBE 0x00001000 211 #define ICTL_TPROT 0x00000200 212 __u32 ictl; /* 0x0048 */ 213 #define ECA_CEI 0x80000000 214 #define ECA_IB 0x40000000 215 #define ECA_SIGPI 0x10000000 216 #define ECA_MVPGI 0x01000000 217 #define ECA_AIV 0x00200000 218 #define ECA_VX 0x00020000 219 #define ECA_PROTEXCI 0x00002000 220 #define ECA_APIE 0x00000008 221 #define ECA_SII 0x00000001 222 __u32 eca; /* 0x004c */ 223 #define ICPT_INST 0x04 224 #define ICPT_PROGI 0x08 225 #define ICPT_INSTPROGI 0x0C 226 #define ICPT_EXTREQ 0x10 227 #define ICPT_EXTINT 0x14 228 #define ICPT_IOREQ 0x18 229 #define ICPT_WAIT 0x1c 230 #define ICPT_VALIDITY 0x20 231 #define ICPT_STOP 0x28 232 #define ICPT_OPEREXC 0x2C 233 #define ICPT_PARTEXEC 0x38 234 #define ICPT_IOINST 0x40 235 #define ICPT_KSS 0x5c 236 #define ICPT_MCHKREQ 0x60 237 #define ICPT_INT_ENABLE 0x64 238 #define ICPT_PV_INSTR 0x68 239 #define ICPT_PV_NOTIFY 0x6c 240 #define ICPT_PV_PREF 0x70 241 __u8 icptcode; /* 0x0050 */ 242 __u8 icptstatus; /* 0x0051 */ 243 __u16 ihcpu; /* 0x0052 */ 244 __u8 reserved54; /* 0x0054 */ 245 #define IICTL_CODE_NONE 0x00 246 #define IICTL_CODE_MCHK 0x01 247 #define IICTL_CODE_EXT 0x02 248 #define IICTL_CODE_IO 0x03 249 #define IICTL_CODE_RESTART 0x04 250 #define IICTL_CODE_SPECIFICATION 0x10 251 #define IICTL_CODE_OPERAND 0x11 252 __u8 iictl; /* 0x0055 */ 253 __u16 ipa; /* 0x0056 */ 254 __u32 ipb; /* 0x0058 */ 255 __u32 scaoh; /* 0x005c */ 256 #define FPF_BPBC 0x20 257 __u8 fpf; /* 0x0060 */ 258 #define ECB_GS 0x40 259 #define ECB_TE 0x10 260 #define ECB_SPECI 0x08 261 #define ECB_SRSI 0x04 262 #define ECB_HOSTPROTINT 0x02 263 #define ECB_PTF 0x01 264 __u8 ecb; /* 0x0061 */ 265 #define ECB2_CMMA 0x80 266 #define ECB2_IEP 0x20 267 #define ECB2_PFMFI 0x08 268 #define ECB2_ESCA 0x04 269 #define ECB2_ZPCI_LSI 0x02 270 __u8 ecb2; /* 0x0062 */ 271 #define ECB3_AISI 0x20 272 #define ECB3_AISII 0x10 273 #define ECB3_DEA 0x08 274 #define ECB3_AES 0x04 275 #define ECB3_RI 0x01 276 __u8 ecb3; /* 0x0063 */ 277 #define ESCA_SCAOL_MASK ~0x3fU 278 __u32 scaol; /* 0x0064 */ 279 __u8 sdf; /* 0x0068 */ 280 __u8 epdx; /* 0x0069 */ 281 __u8 cpnc; /* 0x006a */ 282 __u8 reserved6b; /* 0x006b */ 283 __u32 todpr; /* 0x006c */ 284 #define GISA_FORMAT1 0x00000001 285 __u32 gd; /* 0x0070 */ 286 __u8 reserved74[12]; /* 0x0074 */ 287 __u64 mso; /* 0x0080 */ 288 __u64 msl; /* 0x0088 */ 289 psw_t gpsw; /* 0x0090 */ 290 __u64 gg14; /* 0x00a0 */ 291 __u64 gg15; /* 0x00a8 */ 292 __u8 reservedb0[8]; /* 0x00b0 */ 293 #define HPID_KVM 0x4 294 #define HPID_VSIE 0x5 295 __u8 hpid; /* 0x00b8 */ 296 __u8 reservedb9[7]; /* 0x00b9 */ 297 union { 298 struct { 299 __u32 eiparams; /* 0x00c0 */ 300 __u16 extcpuaddr; /* 0x00c4 */ 301 __u16 eic; /* 0x00c6 */ 302 }; 303 __u64 mcic; /* 0x00c0 */ 304 } __packed; 305 __u32 reservedc8; /* 0x00c8 */ 306 union { 307 struct { 308 __u16 pgmilc; /* 0x00cc */ 309 __u16 iprcc; /* 0x00ce */ 310 }; 311 __u32 edc; /* 0x00cc */ 312 } __packed; 313 union { 314 struct { 315 __u32 dxc; /* 0x00d0 */ 316 __u16 mcn; /* 0x00d4 */ 317 __u8 perc; /* 0x00d6 */ 318 __u8 peratmid; /* 0x00d7 */ 319 }; 320 __u64 faddr; /* 0x00d0 */ 321 } __packed; 322 __u64 peraddr; /* 0x00d8 */ 323 __u8 eai; /* 0x00e0 */ 324 __u8 peraid; /* 0x00e1 */ 325 __u8 oai; /* 0x00e2 */ 326 __u8 armid; /* 0x00e3 */ 327 __u8 reservede4[4]; /* 0x00e4 */ 328 union { 329 __u64 tecmc; /* 0x00e8 */ 330 struct { 331 __u16 subchannel_id; /* 0x00e8 */ 332 __u16 subchannel_nr; /* 0x00ea */ 333 __u32 io_int_parm; /* 0x00ec */ 334 __u32 io_int_word; /* 0x00f0 */ 335 }; 336 } __packed; 337 __u8 reservedf4[8]; /* 0x00f4 */ 338 #define CRYCB_FORMAT_MASK 0x00000003 339 #define CRYCB_FORMAT0 0x00000000 340 #define CRYCB_FORMAT1 0x00000001 341 #define CRYCB_FORMAT2 0x00000003 342 __u32 crycbd; /* 0x00fc */ 343 __u64 gcr[16]; /* 0x0100 */ 344 union { 345 __u64 gbea; /* 0x0180 */ 346 __u64 sidad; 347 }; 348 __u8 reserved188[8]; /* 0x0188 */ 349 __u64 sdnxo; /* 0x0190 */ 350 __u8 reserved198[8]; /* 0x0198 */ 351 __u32 fac; /* 0x01a0 */ 352 __u8 reserved1a4[20]; /* 0x01a4 */ 353 __u64 cbrlo; /* 0x01b8 */ 354 __u8 reserved1c0[8]; /* 0x01c0 */ 355 #define ECD_HOSTREGMGMT 0x20000000 356 #define ECD_MEF 0x08000000 357 #define ECD_ETOKENF 0x02000000 358 #define ECD_ECC 0x00200000 359 __u32 ecd; /* 0x01c8 */ 360 __u8 reserved1cc[18]; /* 0x01cc */ 361 __u64 pp; /* 0x01de */ 362 __u8 reserved1e6[2]; /* 0x01e6 */ 363 __u64 itdba; /* 0x01e8 */ 364 __u64 riccbd; /* 0x01f0 */ 365 __u64 gvrd; /* 0x01f8 */ 366 } __packed __aligned(512); 367 368 struct kvm_s390_itdb { 369 __u8 data[256]; 370 }; 371 372 struct sie_page { 373 struct kvm_s390_sie_block sie_block; 374 struct mcck_volatile_info mcck_info; /* 0x0200 */ 375 __u8 reserved218[360]; /* 0x0218 */ 376 __u64 pv_grregs[16]; /* 0x0380 */ 377 __u8 reserved400[512]; /* 0x0400 */ 378 struct kvm_s390_itdb itdb; /* 0x0600 */ 379 __u8 reserved700[2304]; /* 0x0700 */ 380 }; 381 382 struct kvm_vcpu_stat { 383 struct kvm_vcpu_stat_generic generic; 384 u64 exit_userspace; 385 u64 exit_null; 386 u64 exit_external_request; 387 u64 exit_io_request; 388 u64 exit_external_interrupt; 389 u64 exit_stop_request; 390 u64 exit_validity; 391 u64 exit_instruction; 392 u64 exit_pei; 393 u64 halt_no_poll_steal; 394 u64 instruction_lctl; 395 u64 instruction_lctlg; 396 u64 instruction_stctl; 397 u64 instruction_stctg; 398 u64 exit_program_interruption; 399 u64 exit_instr_and_program; 400 u64 exit_operation_exception; 401 u64 deliver_ckc; 402 u64 deliver_cputm; 403 u64 deliver_external_call; 404 u64 deliver_emergency_signal; 405 u64 deliver_service_signal; 406 u64 deliver_virtio; 407 u64 deliver_stop_signal; 408 u64 deliver_prefix_signal; 409 u64 deliver_restart_signal; 410 u64 deliver_program; 411 u64 deliver_io; 412 u64 deliver_machine_check; 413 u64 exit_wait_state; 414 u64 inject_ckc; 415 u64 inject_cputm; 416 u64 inject_external_call; 417 u64 inject_emergency_signal; 418 u64 inject_mchk; 419 u64 inject_pfault_init; 420 u64 inject_program; 421 u64 inject_restart; 422 u64 inject_set_prefix; 423 u64 inject_stop_signal; 424 u64 instruction_epsw; 425 u64 instruction_gs; 426 u64 instruction_io_other; 427 u64 instruction_lpsw; 428 u64 instruction_lpswe; 429 u64 instruction_lpswey; 430 u64 instruction_pfmf; 431 u64 instruction_ptff; 432 u64 instruction_sck; 433 u64 instruction_sckpf; 434 u64 instruction_stidp; 435 u64 instruction_spx; 436 u64 instruction_stpx; 437 u64 instruction_stap; 438 u64 instruction_iske; 439 u64 instruction_ri; 440 u64 instruction_rrbe; 441 u64 instruction_sske; 442 u64 instruction_ipte_interlock; 443 u64 instruction_stsi; 444 u64 instruction_stfl; 445 u64 instruction_tb; 446 u64 instruction_tpi; 447 u64 instruction_tprot; 448 u64 instruction_tsch; 449 u64 instruction_sie; 450 u64 instruction_essa; 451 u64 instruction_sthyi; 452 u64 instruction_sigp_sense; 453 u64 instruction_sigp_sense_running; 454 u64 instruction_sigp_external_call; 455 u64 instruction_sigp_emergency; 456 u64 instruction_sigp_cond_emergency; 457 u64 instruction_sigp_start; 458 u64 instruction_sigp_stop; 459 u64 instruction_sigp_stop_store_status; 460 u64 instruction_sigp_store_status; 461 u64 instruction_sigp_store_adtl_status; 462 u64 instruction_sigp_arch; 463 u64 instruction_sigp_prefix; 464 u64 instruction_sigp_restart; 465 u64 instruction_sigp_init_cpu_reset; 466 u64 instruction_sigp_cpu_reset; 467 u64 instruction_sigp_unknown; 468 u64 instruction_diagnose_10; 469 u64 instruction_diagnose_44; 470 u64 instruction_diagnose_9c; 471 u64 diag_9c_ignored; 472 u64 diag_9c_forward; 473 u64 instruction_diagnose_258; 474 u64 instruction_diagnose_308; 475 u64 instruction_diagnose_500; 476 u64 instruction_diagnose_other; 477 u64 pfault_sync; 478 }; 479 480 #define PGM_OPERATION 0x01 481 #define PGM_PRIVILEGED_OP 0x02 482 #define PGM_EXECUTE 0x03 483 #define PGM_PROTECTION 0x04 484 #define PGM_ADDRESSING 0x05 485 #define PGM_SPECIFICATION 0x06 486 #define PGM_DATA 0x07 487 #define PGM_FIXED_POINT_OVERFLOW 0x08 488 #define PGM_FIXED_POINT_DIVIDE 0x09 489 #define PGM_DECIMAL_OVERFLOW 0x0a 490 #define PGM_DECIMAL_DIVIDE 0x0b 491 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 492 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 493 #define PGM_HFP_SIGNIFICANCE 0x0e 494 #define PGM_HFP_DIVIDE 0x0f 495 #define PGM_SEGMENT_TRANSLATION 0x10 496 #define PGM_PAGE_TRANSLATION 0x11 497 #define PGM_TRANSLATION_SPEC 0x12 498 #define PGM_SPECIAL_OPERATION 0x13 499 #define PGM_OPERAND 0x15 500 #define PGM_TRACE_TABEL 0x16 501 #define PGM_VECTOR_PROCESSING 0x1b 502 #define PGM_SPACE_SWITCH 0x1c 503 #define PGM_HFP_SQUARE_ROOT 0x1d 504 #define PGM_PC_TRANSLATION_SPEC 0x1f 505 #define PGM_AFX_TRANSLATION 0x20 506 #define PGM_ASX_TRANSLATION 0x21 507 #define PGM_LX_TRANSLATION 0x22 508 #define PGM_EX_TRANSLATION 0x23 509 #define PGM_PRIMARY_AUTHORITY 0x24 510 #define PGM_SECONDARY_AUTHORITY 0x25 511 #define PGM_LFX_TRANSLATION 0x26 512 #define PGM_LSX_TRANSLATION 0x27 513 #define PGM_ALET_SPECIFICATION 0x28 514 #define PGM_ALEN_TRANSLATION 0x29 515 #define PGM_ALE_SEQUENCE 0x2a 516 #define PGM_ASTE_VALIDITY 0x2b 517 #define PGM_ASTE_SEQUENCE 0x2c 518 #define PGM_EXTENDED_AUTHORITY 0x2d 519 #define PGM_LSTE_SEQUENCE 0x2e 520 #define PGM_ASTE_INSTANCE 0x2f 521 #define PGM_STACK_FULL 0x30 522 #define PGM_STACK_EMPTY 0x31 523 #define PGM_STACK_SPECIFICATION 0x32 524 #define PGM_STACK_TYPE 0x33 525 #define PGM_STACK_OPERATION 0x34 526 #define PGM_ASCE_TYPE 0x38 527 #define PGM_REGION_FIRST_TRANS 0x39 528 #define PGM_REGION_SECOND_TRANS 0x3a 529 #define PGM_REGION_THIRD_TRANS 0x3b 530 #define PGM_MONITOR 0x40 531 #define PGM_PER 0x80 532 #define PGM_CRYPTO_OPERATION 0x119 533 534 /* irq types in ascend order of priorities */ 535 enum irq_types { 536 IRQ_PEND_SET_PREFIX = 0, 537 IRQ_PEND_RESTART, 538 IRQ_PEND_SIGP_STOP, 539 IRQ_PEND_IO_ISC_7, 540 IRQ_PEND_IO_ISC_6, 541 IRQ_PEND_IO_ISC_5, 542 IRQ_PEND_IO_ISC_4, 543 IRQ_PEND_IO_ISC_3, 544 IRQ_PEND_IO_ISC_2, 545 IRQ_PEND_IO_ISC_1, 546 IRQ_PEND_IO_ISC_0, 547 IRQ_PEND_VIRTIO, 548 IRQ_PEND_PFAULT_DONE, 549 IRQ_PEND_PFAULT_INIT, 550 IRQ_PEND_EXT_HOST, 551 IRQ_PEND_EXT_SERVICE, 552 IRQ_PEND_EXT_SERVICE_EV, 553 IRQ_PEND_EXT_TIMING, 554 IRQ_PEND_EXT_CPU_TIMER, 555 IRQ_PEND_EXT_CLOCK_COMP, 556 IRQ_PEND_EXT_EXTERNAL, 557 IRQ_PEND_EXT_EMERGENCY, 558 IRQ_PEND_EXT_MALFUNC, 559 IRQ_PEND_EXT_IRQ_KEY, 560 IRQ_PEND_MCHK_REP, 561 IRQ_PEND_PROG, 562 IRQ_PEND_SVC, 563 IRQ_PEND_MCHK_EX, 564 IRQ_PEND_COUNT 565 }; 566 567 /* We have 2M for virtio device descriptor pages. Smallest amount of 568 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 569 */ 570 #define KVM_S390_MAX_VIRTIO_IRQS 87381 571 572 /* 573 * Repressible (non-floating) machine check interrupts 574 * subclass bits in MCIC 575 */ 576 #define MCHK_EXTD_BIT 58 577 #define MCHK_DEGR_BIT 56 578 #define MCHK_WARN_BIT 55 579 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 580 (1UL << MCHK_EXTD_BIT) | \ 581 (1UL << MCHK_WARN_BIT)) 582 583 /* Exigent machine check interrupts subclass bits in MCIC */ 584 #define MCHK_SD_BIT 63 585 #define MCHK_PD_BIT 62 586 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 587 588 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 589 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 590 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 591 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 592 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 593 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 594 (1UL << IRQ_PEND_EXT_TIMING) | \ 595 (1UL << IRQ_PEND_EXT_HOST) | \ 596 (1UL << IRQ_PEND_EXT_SERVICE) | \ 597 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 598 (1UL << IRQ_PEND_VIRTIO) | \ 599 (1UL << IRQ_PEND_PFAULT_INIT) | \ 600 (1UL << IRQ_PEND_PFAULT_DONE)) 601 602 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 603 (1UL << IRQ_PEND_IO_ISC_1) | \ 604 (1UL << IRQ_PEND_IO_ISC_2) | \ 605 (1UL << IRQ_PEND_IO_ISC_3) | \ 606 (1UL << IRQ_PEND_IO_ISC_4) | \ 607 (1UL << IRQ_PEND_IO_ISC_5) | \ 608 (1UL << IRQ_PEND_IO_ISC_6) | \ 609 (1UL << IRQ_PEND_IO_ISC_7)) 610 611 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 612 (1UL << IRQ_PEND_MCHK_EX)) 613 614 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 615 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 616 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 617 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 618 (1UL << IRQ_PEND_EXT_SERVICE) | \ 619 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 620 621 struct kvm_s390_interrupt_info { 622 struct list_head list; 623 u64 type; 624 union { 625 struct kvm_s390_io_info io; 626 struct kvm_s390_ext_info ext; 627 struct kvm_s390_pgm_info pgm; 628 struct kvm_s390_emerg_info emerg; 629 struct kvm_s390_extcall_info extcall; 630 struct kvm_s390_prefix_info prefix; 631 struct kvm_s390_stop_info stop; 632 struct kvm_s390_mchk_info mchk; 633 }; 634 }; 635 636 struct kvm_s390_irq_payload { 637 struct kvm_s390_io_info io; 638 struct kvm_s390_ext_info ext; 639 struct kvm_s390_pgm_info pgm; 640 struct kvm_s390_emerg_info emerg; 641 struct kvm_s390_extcall_info extcall; 642 struct kvm_s390_prefix_info prefix; 643 struct kvm_s390_stop_info stop; 644 struct kvm_s390_mchk_info mchk; 645 }; 646 647 struct kvm_s390_local_interrupt { 648 spinlock_t lock; 649 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 650 struct kvm_s390_irq_payload irq; 651 unsigned long pending_irqs; 652 }; 653 654 #define FIRQ_LIST_IO_ISC_0 0 655 #define FIRQ_LIST_IO_ISC_1 1 656 #define FIRQ_LIST_IO_ISC_2 2 657 #define FIRQ_LIST_IO_ISC_3 3 658 #define FIRQ_LIST_IO_ISC_4 4 659 #define FIRQ_LIST_IO_ISC_5 5 660 #define FIRQ_LIST_IO_ISC_6 6 661 #define FIRQ_LIST_IO_ISC_7 7 662 #define FIRQ_LIST_PFAULT 8 663 #define FIRQ_LIST_VIRTIO 9 664 #define FIRQ_LIST_COUNT 10 665 #define FIRQ_CNTR_IO 0 666 #define FIRQ_CNTR_SERVICE 1 667 #define FIRQ_CNTR_VIRTIO 2 668 #define FIRQ_CNTR_PFAULT 3 669 #define FIRQ_MAX_COUNT 4 670 671 /* mask the AIS mode for a given ISC */ 672 #define AIS_MODE_MASK(isc) (0x80 >> isc) 673 674 #define KVM_S390_AIS_MODE_ALL 0 675 #define KVM_S390_AIS_MODE_SINGLE 1 676 677 struct kvm_s390_float_interrupt { 678 unsigned long pending_irqs; 679 unsigned long masked_irqs; 680 spinlock_t lock; 681 struct list_head lists[FIRQ_LIST_COUNT]; 682 int counters[FIRQ_MAX_COUNT]; 683 struct kvm_s390_mchk_info mchk; 684 struct kvm_s390_ext_info srv_signal; 685 int next_rr_cpu; 686 struct mutex ais_lock; 687 u8 simm; 688 u8 nimm; 689 }; 690 691 struct kvm_hw_wp_info_arch { 692 unsigned long addr; 693 unsigned long phys_addr; 694 int len; 695 char *old_data; 696 }; 697 698 struct kvm_hw_bp_info_arch { 699 unsigned long addr; 700 int len; 701 }; 702 703 /* 704 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 705 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 706 * arch/s390/include/uapi/asm/kvm.h 707 */ 708 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 709 710 #define guestdbg_enabled(vcpu) \ 711 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 712 #define guestdbg_sstep_enabled(vcpu) \ 713 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 714 #define guestdbg_hw_bp_enabled(vcpu) \ 715 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 716 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 717 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 718 719 #define KVM_GUESTDBG_VALID_MASK \ 720 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\ 721 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING) 722 723 struct kvm_guestdbg_info_arch { 724 unsigned long cr0; 725 unsigned long cr9; 726 unsigned long cr10; 727 unsigned long cr11; 728 struct kvm_hw_bp_info_arch *hw_bp_info; 729 struct kvm_hw_wp_info_arch *hw_wp_info; 730 int nr_hw_bp; 731 int nr_hw_wp; 732 unsigned long last_bp; 733 }; 734 735 struct kvm_s390_pv_vcpu { 736 u64 handle; 737 unsigned long stor_base; 738 }; 739 740 struct kvm_vcpu_arch { 741 struct kvm_s390_sie_block *sie_block; 742 /* if vsie is active, currently executed shadow sie control block */ 743 struct kvm_s390_sie_block *vsie_block; 744 unsigned int host_acrs[NUM_ACRS]; 745 struct gs_cb *host_gscb; 746 struct kvm_s390_local_interrupt local_int; 747 struct hrtimer ckc_timer; 748 struct kvm_s390_pgm_info pgm; 749 struct gmap *gmap; 750 /* backup location for the currently enabled gmap when scheduled out */ 751 struct gmap *enabled_gmap; 752 struct kvm_guestdbg_info_arch guestdbg; 753 unsigned long pfault_token; 754 unsigned long pfault_select; 755 unsigned long pfault_compare; 756 bool cputm_enabled; 757 /* 758 * The seqcount protects updates to cputm_start and sie_block.cputm, 759 * this way we can have non-blocking reads with consistent values. 760 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 761 * values and to start/stop/enable/disable cpu timer accounting. 762 */ 763 seqcount_t cputm_seqcount; 764 __u64 cputm_start; 765 bool gs_enabled; 766 bool skey_enabled; 767 /* Indicator if the access registers have been loaded from guest */ 768 bool acrs_loaded; 769 struct kvm_s390_pv_vcpu pv; 770 union diag318_info diag318_info; 771 }; 772 773 struct kvm_vm_stat { 774 struct kvm_vm_stat_generic generic; 775 u64 inject_io; 776 u64 inject_float_mchk; 777 u64 inject_pfault_done; 778 u64 inject_service_signal; 779 u64 inject_virtio; 780 u64 aen_forward; 781 u64 gmap_shadow_create; 782 u64 gmap_shadow_reuse; 783 u64 gmap_shadow_r1_entry; 784 u64 gmap_shadow_r2_entry; 785 u64 gmap_shadow_r3_entry; 786 u64 gmap_shadow_sg_entry; 787 u64 gmap_shadow_pg_entry; 788 }; 789 790 struct kvm_arch_memory_slot { 791 }; 792 793 struct s390_map_info { 794 struct list_head list; 795 __u64 guest_addr; 796 __u64 addr; 797 struct page *page; 798 }; 799 800 struct s390_io_adapter { 801 unsigned int id; 802 int isc; 803 bool maskable; 804 bool masked; 805 bool swap; 806 bool suppressible; 807 }; 808 809 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 810 #define MAX_S390_ADAPTER_MAPS 256 811 812 /* maximum size of facilities and facility mask is 2k bytes */ 813 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 814 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 815 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 816 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 817 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 818 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 819 820 struct kvm_s390_cpu_model { 821 /* facility mask supported by kvm & hosting machine */ 822 __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64]; 823 struct kvm_s390_vm_cpu_subfunc subfuncs; 824 /* facility list requested by guest (in dma page) */ 825 __u64 *fac_list; 826 u64 cpuid; 827 unsigned short ibc; 828 /* subset of available UV-features for pv-guests enabled by user space */ 829 struct kvm_s390_vm_cpu_uv_feat uv_feat_guest; 830 }; 831 832 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu); 833 834 struct kvm_s390_crypto { 835 struct kvm_s390_crypto_cb *crycb; 836 struct rw_semaphore pqap_hook_rwsem; 837 crypto_hook *pqap_hook; 838 __u32 crycbd; 839 __u8 aes_kw; 840 __u8 dea_kw; 841 __u8 apie; 842 }; 843 844 #define APCB0_MASK_SIZE 1 845 struct kvm_s390_apcb0 { 846 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 847 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 848 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 849 __u64 reserved18; /* 0x0018 */ 850 }; 851 852 #define APCB1_MASK_SIZE 4 853 struct kvm_s390_apcb1 { 854 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 855 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 856 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 857 __u64 reserved60[4]; /* 0x0060 */ 858 }; 859 860 struct kvm_s390_crypto_cb { 861 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 862 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 863 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 864 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 865 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 866 }; 867 868 struct kvm_s390_gisa { 869 union { 870 struct { /* common to all formats */ 871 u32 next_alert; 872 u8 ipm; 873 u8 reserved01[2]; 874 u8 iam; 875 }; 876 struct { /* format 0 */ 877 u32 next_alert; 878 u8 ipm; 879 u8 reserved01; 880 u8 : 6; 881 u8 g : 1; 882 u8 c : 1; 883 u8 iam; 884 u8 reserved02[4]; 885 u32 airq_count; 886 } g0; 887 struct { /* format 1 */ 888 u32 next_alert; 889 u8 ipm; 890 u8 simm; 891 u8 nimm; 892 u8 iam; 893 u8 aism[8]; 894 u8 : 6; 895 u8 g : 1; 896 u8 c : 1; 897 u8 reserved03[11]; 898 u32 airq_count; 899 } g1; 900 struct { 901 u64 word[4]; 902 } u64; 903 }; 904 }; 905 906 struct kvm_s390_gib { 907 u32 alert_list_origin; 908 u32 reserved01; 909 u8:5; 910 u8 nisc:3; 911 u8 reserved03[3]; 912 u32 reserved04[5]; 913 }; 914 915 /* 916 * sie_page2 has to be allocated as DMA because fac_list, crycb and 917 * gisa need 31bit addresses in the sie control block. 918 */ 919 struct sie_page2 { 920 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 921 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 922 struct kvm_s390_gisa gisa; /* 0x0900 */ 923 struct kvm *kvm; /* 0x0920 */ 924 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 925 }; 926 927 struct kvm_s390_vsie { 928 struct mutex mutex; 929 struct radix_tree_root addr_to_page; 930 int page_count; 931 int next; 932 struct page *pages[KVM_MAX_VCPUS]; 933 }; 934 935 struct kvm_s390_gisa_iam { 936 u8 mask; 937 spinlock_t ref_lock; 938 u32 ref_count[MAX_ISC + 1]; 939 }; 940 941 struct kvm_s390_gisa_interrupt { 942 struct kvm_s390_gisa *origin; 943 struct kvm_s390_gisa_iam alert; 944 struct hrtimer timer; 945 u64 expires; 946 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 947 }; 948 949 struct kvm_s390_pv { 950 u64 handle; 951 u64 guest_len; 952 unsigned long stor_base; 953 void *stor_var; 954 bool dumping; 955 void *set_aside; 956 struct list_head need_cleanup; 957 struct mmu_notifier mmu_notifier; 958 }; 959 960 struct kvm_arch{ 961 void *sca; 962 int use_esca; 963 rwlock_t sca_lock; 964 debug_info_t *dbf; 965 struct kvm_s390_float_interrupt float_int; 966 struct kvm_device *flic; 967 struct gmap *gmap; 968 unsigned long mem_limit; 969 int css_support; 970 int use_irqchip; 971 int use_cmma; 972 int use_pfmfi; 973 int use_skf; 974 int use_zpci_interp; 975 int user_cpu_state_ctrl; 976 int user_sigp; 977 int user_stsi; 978 int user_instr0; 979 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 980 wait_queue_head_t ipte_wq; 981 int ipte_lock_count; 982 struct mutex ipte_mutex; 983 spinlock_t start_stop_lock; 984 struct sie_page2 *sie_page2; 985 struct kvm_s390_cpu_model model; 986 struct kvm_s390_crypto crypto; 987 struct kvm_s390_vsie vsie; 988 u8 epdx; 989 u64 epoch; 990 int migration_mode; 991 atomic64_t cmma_dirty_pages; 992 /* subset of available cpu features enabled by user space */ 993 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 994 /* indexed by vcpu_idx */ 995 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 996 struct kvm_s390_gisa_interrupt gisa_int; 997 struct kvm_s390_pv pv; 998 struct list_head kzdev_list; 999 spinlock_t kzdev_list_lock; 1000 }; 1001 1002 #define KVM_HVA_ERR_BAD (-1UL) 1003 #define KVM_HVA_ERR_RO_BAD (-2UL) 1004 kvm_is_error_hva(unsigned long addr)1005 static inline bool kvm_is_error_hva(unsigned long addr) 1006 { 1007 return IS_ERR_VALUE(addr); 1008 } 1009 1010 #define ASYNC_PF_PER_VCPU 64 1011 struct kvm_arch_async_pf { 1012 unsigned long pfault_token; 1013 }; 1014 1015 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 1016 1017 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 1018 struct kvm_async_pf *work); 1019 1020 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 1021 struct kvm_async_pf *work); 1022 1023 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 1024 struct kvm_async_pf *work); 1025 kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)1026 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 1027 1028 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 1029 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 1030 unsigned long *aqm, unsigned long *adm); 1031 1032 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa, 1033 unsigned long gasce); 1034 sie64a(struct kvm_s390_sie_block * sie_block,u64 * rsa,unsigned long gasce)1035 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce) 1036 { 1037 return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce); 1038 } 1039 1040 extern char sie_exit; 1041 1042 bool kvm_s390_pv_is_protected(struct kvm *kvm); 1043 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu); 1044 1045 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 1046 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 1047 kvm_arch_sync_events(struct kvm * kvm)1048 static inline void kvm_arch_sync_events(struct kvm *kvm) {} kvm_arch_free_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1049 static inline void kvm_arch_free_memslot(struct kvm *kvm, 1050 struct kvm_memory_slot *slot) {} kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1051 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} kvm_arch_flush_shadow_all(struct kvm * kvm)1052 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1053 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 1054 struct kvm_memory_slot *slot) {} kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1055 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1056 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 1057 1058 #define __KVM_HAVE_ARCH_VM_FREE 1059 void kvm_arch_free_vm(struct kvm *kvm); 1060 1061 struct zpci_kvm_hook { 1062 int (*kvm_register)(void *opaque, struct kvm *kvm); 1063 void (*kvm_unregister)(void *opaque); 1064 }; 1065 1066 extern struct zpci_kvm_hook zpci_kvm_hook; 1067 1068 #endif 1069