1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * definition for kernel virtual machines on s390 4 * 5 * Copyright IBM Corp. 2008, 2018 6 * 7 * Author(s): Carsten Otte <cotte@de.ibm.com> 8 */ 9 10 11 #ifndef ASM_KVM_HOST_H 12 #define ASM_KVM_HOST_H 13 14 #include <linux/types.h> 15 #include <linux/hrtimer.h> 16 #include <linux/interrupt.h> 17 #include <linux/kvm_types.h> 18 #include <linux/kvm_host.h> 19 #include <linux/kvm.h> 20 #include <linux/seqlock.h> 21 #include <linux/module.h> 22 #include <asm/debug.h> 23 #include <asm/cpu.h> 24 #include <asm/fpu/api.h> 25 #include <asm/isc.h> 26 #include <asm/guarded_storage.h> 27 28 #define KVM_S390_BSCA_CPU_SLOTS 64 29 #define KVM_S390_ESCA_CPU_SLOTS 248 30 #define KVM_MAX_VCPUS 255 31 32 /* 33 * These seem to be used for allocating ->chip in the routing table, which we 34 * don't use. 1 is as small as we can get to reduce the needed memory. If we 35 * need to look at ->chip later on, we'll need to revisit this. 36 */ 37 #define KVM_NR_IRQCHIPS 1 38 #define KVM_IRQCHIP_NUM_PINS 1 39 #define KVM_HALT_POLL_NS_DEFAULT 50000 40 41 /* s390-specific vcpu->requests bit members */ 42 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0) 43 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1) 44 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2) 45 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3) 46 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4) 47 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5) 48 #define KVM_REQ_REFRESH_GUEST_PREFIX \ 49 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) 50 51 #define SIGP_CTRL_C 0x80 52 #define SIGP_CTRL_SCN_MASK 0x3f 53 54 union bsca_sigp_ctrl { 55 __u8 value; 56 struct { 57 __u8 c : 1; 58 __u8 r : 1; 59 __u8 scn : 6; 60 }; 61 }; 62 63 union esca_sigp_ctrl { 64 __u16 value; 65 struct { 66 __u8 c : 1; 67 __u8 reserved: 7; 68 __u8 scn; 69 }; 70 }; 71 72 struct esca_entry { 73 union esca_sigp_ctrl sigp_ctrl; 74 __u16 reserved1[3]; 75 __u64 sda; 76 __u64 reserved2[6]; 77 }; 78 79 struct bsca_entry { 80 __u8 reserved0; 81 union bsca_sigp_ctrl sigp_ctrl; 82 __u16 reserved[3]; 83 __u64 sda; 84 __u64 reserved2[2]; 85 }; 86 87 union ipte_control { 88 unsigned long val; 89 struct { 90 unsigned long k : 1; 91 unsigned long kh : 31; 92 unsigned long kg : 32; 93 }; 94 }; 95 96 struct bsca_block { 97 union ipte_control ipte_control; 98 __u64 reserved[5]; 99 __u64 mcn; 100 __u64 reserved2; 101 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 102 }; 103 104 struct esca_block { 105 union ipte_control ipte_control; 106 __u64 reserved1[7]; 107 __u64 mcn[4]; 108 __u64 reserved2[20]; 109 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 110 }; 111 112 /* 113 * This struct is used to store some machine check info from lowcore 114 * for machine checks that happen while the guest is running. 115 * This info in host's lowcore might be overwritten by a second machine 116 * check from host when host is in the machine check's high-level handling. 117 * The size is 24 bytes. 118 */ 119 struct mcck_volatile_info { 120 __u64 mcic; 121 __u64 failing_storage_address; 122 __u32 ext_damage_code; 123 __u32 reserved; 124 }; 125 126 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 127 CR0_MEASUREMENT_ALERT_SUBMASK) 128 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 129 CR14_EXTERNAL_DAMAGE_SUBMASK) 130 131 #define SIDAD_SIZE_MASK 0xff 132 #define sida_origin(sie_block) \ 133 ((sie_block)->sidad & PAGE_MASK) 134 #define sida_size(sie_block) \ 135 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE) 136 137 #define CPUSTAT_STOPPED 0x80000000 138 #define CPUSTAT_WAIT 0x10000000 139 #define CPUSTAT_ECALL_PEND 0x08000000 140 #define CPUSTAT_STOP_INT 0x04000000 141 #define CPUSTAT_IO_INT 0x02000000 142 #define CPUSTAT_EXT_INT 0x01000000 143 #define CPUSTAT_RUNNING 0x00800000 144 #define CPUSTAT_RETAINED 0x00400000 145 #define CPUSTAT_TIMING_SUB 0x00020000 146 #define CPUSTAT_SIE_SUB 0x00010000 147 #define CPUSTAT_RRF 0x00008000 148 #define CPUSTAT_SLSV 0x00004000 149 #define CPUSTAT_SLSR 0x00002000 150 #define CPUSTAT_ZARCH 0x00000800 151 #define CPUSTAT_MCDS 0x00000100 152 #define CPUSTAT_KSS 0x00000200 153 #define CPUSTAT_SM 0x00000080 154 #define CPUSTAT_IBS 0x00000040 155 #define CPUSTAT_GED2 0x00000010 156 #define CPUSTAT_G 0x00000008 157 #define CPUSTAT_GED 0x00000004 158 #define CPUSTAT_J 0x00000002 159 #define CPUSTAT_P 0x00000001 160 161 struct kvm_s390_sie_block { 162 atomic_t cpuflags; /* 0x0000 */ 163 __u32 : 1; /* 0x0004 */ 164 __u32 prefix : 18; 165 __u32 : 1; 166 __u32 ibc : 12; 167 __u8 reserved08[4]; /* 0x0008 */ 168 #define PROG_IN_SIE (1<<0) 169 __u32 prog0c; /* 0x000c */ 170 union { 171 __u8 reserved10[16]; /* 0x0010 */ 172 struct { 173 __u64 pv_handle_cpu; 174 __u64 pv_handle_config; 175 }; 176 }; 177 #define PROG_BLOCK_SIE (1<<0) 178 #define PROG_REQUEST (1<<1) 179 atomic_t prog20; /* 0x0020 */ 180 __u8 reserved24[4]; /* 0x0024 */ 181 __u64 cputm; /* 0x0028 */ 182 __u64 ckc; /* 0x0030 */ 183 __u64 epoch; /* 0x0038 */ 184 __u32 svcc; /* 0x0040 */ 185 #define LCTL_CR0 0x8000 186 #define LCTL_CR6 0x0200 187 #define LCTL_CR9 0x0040 188 #define LCTL_CR10 0x0020 189 #define LCTL_CR11 0x0010 190 #define LCTL_CR14 0x0002 191 __u16 lctl; /* 0x0044 */ 192 __s16 icpua; /* 0x0046 */ 193 #define ICTL_OPEREXC 0x80000000 194 #define ICTL_PINT 0x20000000 195 #define ICTL_LPSW 0x00400000 196 #define ICTL_STCTL 0x00040000 197 #define ICTL_ISKE 0x00004000 198 #define ICTL_SSKE 0x00002000 199 #define ICTL_RRBE 0x00001000 200 #define ICTL_TPROT 0x00000200 201 __u32 ictl; /* 0x0048 */ 202 #define ECA_CEI 0x80000000 203 #define ECA_IB 0x40000000 204 #define ECA_SIGPI 0x10000000 205 #define ECA_MVPGI 0x01000000 206 #define ECA_AIV 0x00200000 207 #define ECA_VX 0x00020000 208 #define ECA_PROTEXCI 0x00002000 209 #define ECA_APIE 0x00000008 210 #define ECA_SII 0x00000001 211 __u32 eca; /* 0x004c */ 212 #define ICPT_INST 0x04 213 #define ICPT_PROGI 0x08 214 #define ICPT_INSTPROGI 0x0C 215 #define ICPT_EXTREQ 0x10 216 #define ICPT_EXTINT 0x14 217 #define ICPT_IOREQ 0x18 218 #define ICPT_WAIT 0x1c 219 #define ICPT_VALIDITY 0x20 220 #define ICPT_STOP 0x28 221 #define ICPT_OPEREXC 0x2C 222 #define ICPT_PARTEXEC 0x38 223 #define ICPT_IOINST 0x40 224 #define ICPT_KSS 0x5c 225 #define ICPT_MCHKREQ 0x60 226 #define ICPT_INT_ENABLE 0x64 227 #define ICPT_PV_INSTR 0x68 228 #define ICPT_PV_NOTIFY 0x6c 229 #define ICPT_PV_PREF 0x70 230 __u8 icptcode; /* 0x0050 */ 231 __u8 icptstatus; /* 0x0051 */ 232 __u16 ihcpu; /* 0x0052 */ 233 __u8 reserved54; /* 0x0054 */ 234 #define IICTL_CODE_NONE 0x00 235 #define IICTL_CODE_MCHK 0x01 236 #define IICTL_CODE_EXT 0x02 237 #define IICTL_CODE_IO 0x03 238 #define IICTL_CODE_RESTART 0x04 239 #define IICTL_CODE_SPECIFICATION 0x10 240 #define IICTL_CODE_OPERAND 0x11 241 __u8 iictl; /* 0x0055 */ 242 __u16 ipa; /* 0x0056 */ 243 __u32 ipb; /* 0x0058 */ 244 __u32 scaoh; /* 0x005c */ 245 #define FPF_BPBC 0x20 246 __u8 fpf; /* 0x0060 */ 247 #define ECB_GS 0x40 248 #define ECB_TE 0x10 249 #define ECB_SPECI 0x08 250 #define ECB_SRSI 0x04 251 #define ECB_HOSTPROTINT 0x02 252 __u8 ecb; /* 0x0061 */ 253 #define ECB2_CMMA 0x80 254 #define ECB2_IEP 0x20 255 #define ECB2_PFMFI 0x08 256 #define ECB2_ESCA 0x04 257 __u8 ecb2; /* 0x0062 */ 258 #define ECB3_DEA 0x08 259 #define ECB3_AES 0x04 260 #define ECB3_RI 0x01 261 __u8 ecb3; /* 0x0063 */ 262 __u32 scaol; /* 0x0064 */ 263 __u8 sdf; /* 0x0068 */ 264 __u8 epdx; /* 0x0069 */ 265 __u8 cpnc; /* 0x006a */ 266 __u8 reserved6b; /* 0x006b */ 267 __u32 todpr; /* 0x006c */ 268 #define GISA_FORMAT1 0x00000001 269 __u32 gd; /* 0x0070 */ 270 __u8 reserved74[12]; /* 0x0074 */ 271 __u64 mso; /* 0x0080 */ 272 __u64 msl; /* 0x0088 */ 273 psw_t gpsw; /* 0x0090 */ 274 __u64 gg14; /* 0x00a0 */ 275 __u64 gg15; /* 0x00a8 */ 276 __u8 reservedb0[8]; /* 0x00b0 */ 277 #define HPID_KVM 0x4 278 #define HPID_VSIE 0x5 279 __u8 hpid; /* 0x00b8 */ 280 __u8 reservedb9[7]; /* 0x00b9 */ 281 union { 282 struct { 283 __u32 eiparams; /* 0x00c0 */ 284 __u16 extcpuaddr; /* 0x00c4 */ 285 __u16 eic; /* 0x00c6 */ 286 }; 287 __u64 mcic; /* 0x00c0 */ 288 } __packed; 289 __u32 reservedc8; /* 0x00c8 */ 290 union { 291 struct { 292 __u16 pgmilc; /* 0x00cc */ 293 __u16 iprcc; /* 0x00ce */ 294 }; 295 __u32 edc; /* 0x00cc */ 296 } __packed; 297 union { 298 struct { 299 __u32 dxc; /* 0x00d0 */ 300 __u16 mcn; /* 0x00d4 */ 301 __u8 perc; /* 0x00d6 */ 302 __u8 peratmid; /* 0x00d7 */ 303 }; 304 __u64 faddr; /* 0x00d0 */ 305 } __packed; 306 __u64 peraddr; /* 0x00d8 */ 307 __u8 eai; /* 0x00e0 */ 308 __u8 peraid; /* 0x00e1 */ 309 __u8 oai; /* 0x00e2 */ 310 __u8 armid; /* 0x00e3 */ 311 __u8 reservede4[4]; /* 0x00e4 */ 312 union { 313 __u64 tecmc; /* 0x00e8 */ 314 struct { 315 __u16 subchannel_id; /* 0x00e8 */ 316 __u16 subchannel_nr; /* 0x00ea */ 317 __u32 io_int_parm; /* 0x00ec */ 318 __u32 io_int_word; /* 0x00f0 */ 319 }; 320 } __packed; 321 __u8 reservedf4[8]; /* 0x00f4 */ 322 #define CRYCB_FORMAT_MASK 0x00000003 323 #define CRYCB_FORMAT0 0x00000000 324 #define CRYCB_FORMAT1 0x00000001 325 #define CRYCB_FORMAT2 0x00000003 326 __u32 crycbd; /* 0x00fc */ 327 __u64 gcr[16]; /* 0x0100 */ 328 union { 329 __u64 gbea; /* 0x0180 */ 330 __u64 sidad; 331 }; 332 __u8 reserved188[8]; /* 0x0188 */ 333 __u64 sdnxo; /* 0x0190 */ 334 __u8 reserved198[8]; /* 0x0198 */ 335 __u32 fac; /* 0x01a0 */ 336 __u8 reserved1a4[20]; /* 0x01a4 */ 337 __u64 cbrlo; /* 0x01b8 */ 338 __u8 reserved1c0[8]; /* 0x01c0 */ 339 #define ECD_HOSTREGMGMT 0x20000000 340 #define ECD_MEF 0x08000000 341 #define ECD_ETOKENF 0x02000000 342 #define ECD_ECC 0x00200000 343 __u32 ecd; /* 0x01c8 */ 344 __u8 reserved1cc[18]; /* 0x01cc */ 345 __u64 pp; /* 0x01de */ 346 __u8 reserved1e6[2]; /* 0x01e6 */ 347 __u64 itdba; /* 0x01e8 */ 348 __u64 riccbd; /* 0x01f0 */ 349 __u64 gvrd; /* 0x01f8 */ 350 } __packed __aligned(512); 351 352 struct kvm_s390_itdb { 353 __u8 data[256]; 354 }; 355 356 struct sie_page { 357 struct kvm_s390_sie_block sie_block; 358 struct mcck_volatile_info mcck_info; /* 0x0200 */ 359 __u8 reserved218[360]; /* 0x0218 */ 360 __u64 pv_grregs[16]; /* 0x0380 */ 361 __u8 reserved400[512]; /* 0x0400 */ 362 struct kvm_s390_itdb itdb; /* 0x0600 */ 363 __u8 reserved700[2304]; /* 0x0700 */ 364 }; 365 366 struct kvm_vcpu_stat { 367 struct kvm_vcpu_stat_generic generic; 368 u64 exit_userspace; 369 u64 exit_null; 370 u64 exit_external_request; 371 u64 exit_io_request; 372 u64 exit_external_interrupt; 373 u64 exit_stop_request; 374 u64 exit_validity; 375 u64 exit_instruction; 376 u64 exit_pei; 377 u64 halt_no_poll_steal; 378 u64 instruction_lctl; 379 u64 instruction_lctlg; 380 u64 instruction_stctl; 381 u64 instruction_stctg; 382 u64 exit_program_interruption; 383 u64 exit_instr_and_program; 384 u64 exit_operation_exception; 385 u64 deliver_ckc; 386 u64 deliver_cputm; 387 u64 deliver_external_call; 388 u64 deliver_emergency_signal; 389 u64 deliver_service_signal; 390 u64 deliver_virtio; 391 u64 deliver_stop_signal; 392 u64 deliver_prefix_signal; 393 u64 deliver_restart_signal; 394 u64 deliver_program; 395 u64 deliver_io; 396 u64 deliver_machine_check; 397 u64 exit_wait_state; 398 u64 inject_ckc; 399 u64 inject_cputm; 400 u64 inject_external_call; 401 u64 inject_emergency_signal; 402 u64 inject_mchk; 403 u64 inject_pfault_init; 404 u64 inject_program; 405 u64 inject_restart; 406 u64 inject_set_prefix; 407 u64 inject_stop_signal; 408 u64 instruction_epsw; 409 u64 instruction_gs; 410 u64 instruction_io_other; 411 u64 instruction_lpsw; 412 u64 instruction_lpswe; 413 u64 instruction_pfmf; 414 u64 instruction_ptff; 415 u64 instruction_sck; 416 u64 instruction_sckpf; 417 u64 instruction_stidp; 418 u64 instruction_spx; 419 u64 instruction_stpx; 420 u64 instruction_stap; 421 u64 instruction_iske; 422 u64 instruction_ri; 423 u64 instruction_rrbe; 424 u64 instruction_sske; 425 u64 instruction_ipte_interlock; 426 u64 instruction_stsi; 427 u64 instruction_stfl; 428 u64 instruction_tb; 429 u64 instruction_tpi; 430 u64 instruction_tprot; 431 u64 instruction_tsch; 432 u64 instruction_sie; 433 u64 instruction_essa; 434 u64 instruction_sthyi; 435 u64 instruction_sigp_sense; 436 u64 instruction_sigp_sense_running; 437 u64 instruction_sigp_external_call; 438 u64 instruction_sigp_emergency; 439 u64 instruction_sigp_cond_emergency; 440 u64 instruction_sigp_start; 441 u64 instruction_sigp_stop; 442 u64 instruction_sigp_stop_store_status; 443 u64 instruction_sigp_store_status; 444 u64 instruction_sigp_store_adtl_status; 445 u64 instruction_sigp_arch; 446 u64 instruction_sigp_prefix; 447 u64 instruction_sigp_restart; 448 u64 instruction_sigp_init_cpu_reset; 449 u64 instruction_sigp_cpu_reset; 450 u64 instruction_sigp_unknown; 451 u64 instruction_diagnose_10; 452 u64 instruction_diagnose_44; 453 u64 instruction_diagnose_9c; 454 u64 diag_9c_ignored; 455 u64 diag_9c_forward; 456 u64 instruction_diagnose_258; 457 u64 instruction_diagnose_308; 458 u64 instruction_diagnose_500; 459 u64 instruction_diagnose_other; 460 u64 pfault_sync; 461 }; 462 463 #define PGM_OPERATION 0x01 464 #define PGM_PRIVILEGED_OP 0x02 465 #define PGM_EXECUTE 0x03 466 #define PGM_PROTECTION 0x04 467 #define PGM_ADDRESSING 0x05 468 #define PGM_SPECIFICATION 0x06 469 #define PGM_DATA 0x07 470 #define PGM_FIXED_POINT_OVERFLOW 0x08 471 #define PGM_FIXED_POINT_DIVIDE 0x09 472 #define PGM_DECIMAL_OVERFLOW 0x0a 473 #define PGM_DECIMAL_DIVIDE 0x0b 474 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 475 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 476 #define PGM_HFP_SIGNIFICANCE 0x0e 477 #define PGM_HFP_DIVIDE 0x0f 478 #define PGM_SEGMENT_TRANSLATION 0x10 479 #define PGM_PAGE_TRANSLATION 0x11 480 #define PGM_TRANSLATION_SPEC 0x12 481 #define PGM_SPECIAL_OPERATION 0x13 482 #define PGM_OPERAND 0x15 483 #define PGM_TRACE_TABEL 0x16 484 #define PGM_VECTOR_PROCESSING 0x1b 485 #define PGM_SPACE_SWITCH 0x1c 486 #define PGM_HFP_SQUARE_ROOT 0x1d 487 #define PGM_PC_TRANSLATION_SPEC 0x1f 488 #define PGM_AFX_TRANSLATION 0x20 489 #define PGM_ASX_TRANSLATION 0x21 490 #define PGM_LX_TRANSLATION 0x22 491 #define PGM_EX_TRANSLATION 0x23 492 #define PGM_PRIMARY_AUTHORITY 0x24 493 #define PGM_SECONDARY_AUTHORITY 0x25 494 #define PGM_LFX_TRANSLATION 0x26 495 #define PGM_LSX_TRANSLATION 0x27 496 #define PGM_ALET_SPECIFICATION 0x28 497 #define PGM_ALEN_TRANSLATION 0x29 498 #define PGM_ALE_SEQUENCE 0x2a 499 #define PGM_ASTE_VALIDITY 0x2b 500 #define PGM_ASTE_SEQUENCE 0x2c 501 #define PGM_EXTENDED_AUTHORITY 0x2d 502 #define PGM_LSTE_SEQUENCE 0x2e 503 #define PGM_ASTE_INSTANCE 0x2f 504 #define PGM_STACK_FULL 0x30 505 #define PGM_STACK_EMPTY 0x31 506 #define PGM_STACK_SPECIFICATION 0x32 507 #define PGM_STACK_TYPE 0x33 508 #define PGM_STACK_OPERATION 0x34 509 #define PGM_ASCE_TYPE 0x38 510 #define PGM_REGION_FIRST_TRANS 0x39 511 #define PGM_REGION_SECOND_TRANS 0x3a 512 #define PGM_REGION_THIRD_TRANS 0x3b 513 #define PGM_MONITOR 0x40 514 #define PGM_PER 0x80 515 #define PGM_CRYPTO_OPERATION 0x119 516 517 /* irq types in ascend order of priorities */ 518 enum irq_types { 519 IRQ_PEND_SET_PREFIX = 0, 520 IRQ_PEND_RESTART, 521 IRQ_PEND_SIGP_STOP, 522 IRQ_PEND_IO_ISC_7, 523 IRQ_PEND_IO_ISC_6, 524 IRQ_PEND_IO_ISC_5, 525 IRQ_PEND_IO_ISC_4, 526 IRQ_PEND_IO_ISC_3, 527 IRQ_PEND_IO_ISC_2, 528 IRQ_PEND_IO_ISC_1, 529 IRQ_PEND_IO_ISC_0, 530 IRQ_PEND_VIRTIO, 531 IRQ_PEND_PFAULT_DONE, 532 IRQ_PEND_PFAULT_INIT, 533 IRQ_PEND_EXT_HOST, 534 IRQ_PEND_EXT_SERVICE, 535 IRQ_PEND_EXT_SERVICE_EV, 536 IRQ_PEND_EXT_TIMING, 537 IRQ_PEND_EXT_CPU_TIMER, 538 IRQ_PEND_EXT_CLOCK_COMP, 539 IRQ_PEND_EXT_EXTERNAL, 540 IRQ_PEND_EXT_EMERGENCY, 541 IRQ_PEND_EXT_MALFUNC, 542 IRQ_PEND_EXT_IRQ_KEY, 543 IRQ_PEND_MCHK_REP, 544 IRQ_PEND_PROG, 545 IRQ_PEND_SVC, 546 IRQ_PEND_MCHK_EX, 547 IRQ_PEND_COUNT 548 }; 549 550 /* We have 2M for virtio device descriptor pages. Smallest amount of 551 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 552 */ 553 #define KVM_S390_MAX_VIRTIO_IRQS 87381 554 555 /* 556 * Repressible (non-floating) machine check interrupts 557 * subclass bits in MCIC 558 */ 559 #define MCHK_EXTD_BIT 58 560 #define MCHK_DEGR_BIT 56 561 #define MCHK_WARN_BIT 55 562 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 563 (1UL << MCHK_EXTD_BIT) | \ 564 (1UL << MCHK_WARN_BIT)) 565 566 /* Exigent machine check interrupts subclass bits in MCIC */ 567 #define MCHK_SD_BIT 63 568 #define MCHK_PD_BIT 62 569 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 570 571 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 572 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 573 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 574 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 575 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 576 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 577 (1UL << IRQ_PEND_EXT_TIMING) | \ 578 (1UL << IRQ_PEND_EXT_HOST) | \ 579 (1UL << IRQ_PEND_EXT_SERVICE) | \ 580 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \ 581 (1UL << IRQ_PEND_VIRTIO) | \ 582 (1UL << IRQ_PEND_PFAULT_INIT) | \ 583 (1UL << IRQ_PEND_PFAULT_DONE)) 584 585 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 586 (1UL << IRQ_PEND_IO_ISC_1) | \ 587 (1UL << IRQ_PEND_IO_ISC_2) | \ 588 (1UL << IRQ_PEND_IO_ISC_3) | \ 589 (1UL << IRQ_PEND_IO_ISC_4) | \ 590 (1UL << IRQ_PEND_IO_ISC_5) | \ 591 (1UL << IRQ_PEND_IO_ISC_6) | \ 592 (1UL << IRQ_PEND_IO_ISC_7)) 593 594 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 595 (1UL << IRQ_PEND_MCHK_EX)) 596 597 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 598 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 599 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 600 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 601 (1UL << IRQ_PEND_EXT_SERVICE) | \ 602 (1UL << IRQ_PEND_EXT_SERVICE_EV)) 603 604 struct kvm_s390_interrupt_info { 605 struct list_head list; 606 u64 type; 607 union { 608 struct kvm_s390_io_info io; 609 struct kvm_s390_ext_info ext; 610 struct kvm_s390_pgm_info pgm; 611 struct kvm_s390_emerg_info emerg; 612 struct kvm_s390_extcall_info extcall; 613 struct kvm_s390_prefix_info prefix; 614 struct kvm_s390_stop_info stop; 615 struct kvm_s390_mchk_info mchk; 616 }; 617 }; 618 619 struct kvm_s390_irq_payload { 620 struct kvm_s390_io_info io; 621 struct kvm_s390_ext_info ext; 622 struct kvm_s390_pgm_info pgm; 623 struct kvm_s390_emerg_info emerg; 624 struct kvm_s390_extcall_info extcall; 625 struct kvm_s390_prefix_info prefix; 626 struct kvm_s390_stop_info stop; 627 struct kvm_s390_mchk_info mchk; 628 }; 629 630 struct kvm_s390_local_interrupt { 631 spinlock_t lock; 632 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 633 struct kvm_s390_irq_payload irq; 634 unsigned long pending_irqs; 635 }; 636 637 #define FIRQ_LIST_IO_ISC_0 0 638 #define FIRQ_LIST_IO_ISC_1 1 639 #define FIRQ_LIST_IO_ISC_2 2 640 #define FIRQ_LIST_IO_ISC_3 3 641 #define FIRQ_LIST_IO_ISC_4 4 642 #define FIRQ_LIST_IO_ISC_5 5 643 #define FIRQ_LIST_IO_ISC_6 6 644 #define FIRQ_LIST_IO_ISC_7 7 645 #define FIRQ_LIST_PFAULT 8 646 #define FIRQ_LIST_VIRTIO 9 647 #define FIRQ_LIST_COUNT 10 648 #define FIRQ_CNTR_IO 0 649 #define FIRQ_CNTR_SERVICE 1 650 #define FIRQ_CNTR_VIRTIO 2 651 #define FIRQ_CNTR_PFAULT 3 652 #define FIRQ_MAX_COUNT 4 653 654 /* mask the AIS mode for a given ISC */ 655 #define AIS_MODE_MASK(isc) (0x80 >> isc) 656 657 #define KVM_S390_AIS_MODE_ALL 0 658 #define KVM_S390_AIS_MODE_SINGLE 1 659 660 struct kvm_s390_float_interrupt { 661 unsigned long pending_irqs; 662 unsigned long masked_irqs; 663 spinlock_t lock; 664 struct list_head lists[FIRQ_LIST_COUNT]; 665 int counters[FIRQ_MAX_COUNT]; 666 struct kvm_s390_mchk_info mchk; 667 struct kvm_s390_ext_info srv_signal; 668 int next_rr_cpu; 669 struct mutex ais_lock; 670 u8 simm; 671 u8 nimm; 672 }; 673 674 struct kvm_hw_wp_info_arch { 675 unsigned long addr; 676 unsigned long phys_addr; 677 int len; 678 char *old_data; 679 }; 680 681 struct kvm_hw_bp_info_arch { 682 unsigned long addr; 683 int len; 684 }; 685 686 /* 687 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 688 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 689 * arch/s390/include/uapi/asm/kvm.h 690 */ 691 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 692 693 #define guestdbg_enabled(vcpu) \ 694 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 695 #define guestdbg_sstep_enabled(vcpu) \ 696 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 697 #define guestdbg_hw_bp_enabled(vcpu) \ 698 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 699 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 700 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 701 702 #define KVM_GUESTDBG_VALID_MASK \ 703 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\ 704 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING) 705 706 struct kvm_guestdbg_info_arch { 707 unsigned long cr0; 708 unsigned long cr9; 709 unsigned long cr10; 710 unsigned long cr11; 711 struct kvm_hw_bp_info_arch *hw_bp_info; 712 struct kvm_hw_wp_info_arch *hw_wp_info; 713 int nr_hw_bp; 714 int nr_hw_wp; 715 unsigned long last_bp; 716 }; 717 718 struct kvm_s390_pv_vcpu { 719 u64 handle; 720 unsigned long stor_base; 721 }; 722 723 struct kvm_vcpu_arch { 724 struct kvm_s390_sie_block *sie_block; 725 /* if vsie is active, currently executed shadow sie control block */ 726 struct kvm_s390_sie_block *vsie_block; 727 unsigned int host_acrs[NUM_ACRS]; 728 struct gs_cb *host_gscb; 729 struct fpu host_fpregs; 730 struct kvm_s390_local_interrupt local_int; 731 struct hrtimer ckc_timer; 732 struct kvm_s390_pgm_info pgm; 733 struct gmap *gmap; 734 /* backup location for the currently enabled gmap when scheduled out */ 735 struct gmap *enabled_gmap; 736 struct kvm_guestdbg_info_arch guestdbg; 737 unsigned long pfault_token; 738 unsigned long pfault_select; 739 unsigned long pfault_compare; 740 bool cputm_enabled; 741 /* 742 * The seqcount protects updates to cputm_start and sie_block.cputm, 743 * this way we can have non-blocking reads with consistent values. 744 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 745 * values and to start/stop/enable/disable cpu timer accounting. 746 */ 747 seqcount_t cputm_seqcount; 748 __u64 cputm_start; 749 bool gs_enabled; 750 bool skey_enabled; 751 struct kvm_s390_pv_vcpu pv; 752 union diag318_info diag318_info; 753 }; 754 755 struct kvm_vm_stat { 756 struct kvm_vm_stat_generic generic; 757 u64 inject_io; 758 u64 inject_float_mchk; 759 u64 inject_pfault_done; 760 u64 inject_service_signal; 761 u64 inject_virtio; 762 }; 763 764 struct kvm_arch_memory_slot { 765 }; 766 767 struct s390_map_info { 768 struct list_head list; 769 __u64 guest_addr; 770 __u64 addr; 771 struct page *page; 772 }; 773 774 struct s390_io_adapter { 775 unsigned int id; 776 int isc; 777 bool maskable; 778 bool masked; 779 bool swap; 780 bool suppressible; 781 }; 782 783 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 784 #define MAX_S390_ADAPTER_MAPS 256 785 786 /* maximum size of facilities and facility mask is 2k bytes */ 787 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 788 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 789 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 790 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 791 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 792 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 793 794 struct kvm_s390_cpu_model { 795 /* facility mask supported by kvm & hosting machine */ 796 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64]; 797 struct kvm_s390_vm_cpu_subfunc subfuncs; 798 /* facility list requested by guest (in dma page) */ 799 __u64 *fac_list; 800 u64 cpuid; 801 unsigned short ibc; 802 }; 803 804 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu); 805 806 struct kvm_s390_crypto { 807 struct kvm_s390_crypto_cb *crycb; 808 struct rw_semaphore pqap_hook_rwsem; 809 crypto_hook *pqap_hook; 810 __u32 crycbd; 811 __u8 aes_kw; 812 __u8 dea_kw; 813 __u8 apie; 814 }; 815 816 #define APCB0_MASK_SIZE 1 817 struct kvm_s390_apcb0 { 818 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 819 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 820 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 821 __u64 reserved18; /* 0x0018 */ 822 }; 823 824 #define APCB1_MASK_SIZE 4 825 struct kvm_s390_apcb1 { 826 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 827 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 828 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 829 __u64 reserved60[4]; /* 0x0060 */ 830 }; 831 832 struct kvm_s390_crypto_cb { 833 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 834 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 835 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 836 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 837 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 838 }; 839 840 struct kvm_s390_gisa { 841 union { 842 struct { /* common to all formats */ 843 u32 next_alert; 844 u8 ipm; 845 u8 reserved01[2]; 846 u8 iam; 847 }; 848 struct { /* format 0 */ 849 u32 next_alert; 850 u8 ipm; 851 u8 reserved01; 852 u8 : 6; 853 u8 g : 1; 854 u8 c : 1; 855 u8 iam; 856 u8 reserved02[4]; 857 u32 airq_count; 858 } g0; 859 struct { /* format 1 */ 860 u32 next_alert; 861 u8 ipm; 862 u8 simm; 863 u8 nimm; 864 u8 iam; 865 u8 aism[8]; 866 u8 : 6; 867 u8 g : 1; 868 u8 c : 1; 869 u8 reserved03[11]; 870 u32 airq_count; 871 } g1; 872 struct { 873 u64 word[4]; 874 } u64; 875 }; 876 }; 877 878 struct kvm_s390_gib { 879 u32 alert_list_origin; 880 u32 reserved01; 881 u8:5; 882 u8 nisc:3; 883 u8 reserved03[3]; 884 u32 reserved04[5]; 885 }; 886 887 /* 888 * sie_page2 has to be allocated as DMA because fac_list, crycb and 889 * gisa need 31bit addresses in the sie control block. 890 */ 891 struct sie_page2 { 892 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 893 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 894 struct kvm_s390_gisa gisa; /* 0x0900 */ 895 struct kvm *kvm; /* 0x0920 */ 896 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 897 }; 898 899 struct kvm_s390_vsie { 900 struct mutex mutex; 901 struct radix_tree_root addr_to_page; 902 int page_count; 903 int next; 904 struct page *pages[KVM_MAX_VCPUS]; 905 }; 906 907 struct kvm_s390_gisa_iam { 908 u8 mask; 909 spinlock_t ref_lock; 910 u32 ref_count[MAX_ISC + 1]; 911 }; 912 913 struct kvm_s390_gisa_interrupt { 914 struct kvm_s390_gisa *origin; 915 struct kvm_s390_gisa_iam alert; 916 struct hrtimer timer; 917 u64 expires; 918 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 919 }; 920 921 struct kvm_s390_pv { 922 u64 handle; 923 u64 guest_len; 924 unsigned long stor_base; 925 void *stor_var; 926 }; 927 928 struct kvm_arch{ 929 void *sca; 930 int use_esca; 931 rwlock_t sca_lock; 932 debug_info_t *dbf; 933 struct kvm_s390_float_interrupt float_int; 934 struct kvm_device *flic; 935 struct gmap *gmap; 936 unsigned long mem_limit; 937 int css_support; 938 int use_irqchip; 939 int use_cmma; 940 int use_pfmfi; 941 int use_skf; 942 int user_cpu_state_ctrl; 943 int user_sigp; 944 int user_stsi; 945 int user_instr0; 946 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 947 wait_queue_head_t ipte_wq; 948 int ipte_lock_count; 949 struct mutex ipte_mutex; 950 spinlock_t start_stop_lock; 951 struct sie_page2 *sie_page2; 952 struct kvm_s390_cpu_model model; 953 struct kvm_s390_crypto crypto; 954 struct kvm_s390_vsie vsie; 955 u8 epdx; 956 u64 epoch; 957 int migration_mode; 958 atomic64_t cmma_dirty_pages; 959 /* subset of available cpu features enabled by user space */ 960 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 961 /* indexed by vcpu_idx */ 962 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 963 struct kvm_s390_gisa_interrupt gisa_int; 964 struct kvm_s390_pv pv; 965 }; 966 967 #define KVM_HVA_ERR_BAD (-1UL) 968 #define KVM_HVA_ERR_RO_BAD (-2UL) 969 970 static inline bool kvm_is_error_hva(unsigned long addr) 971 { 972 return IS_ERR_VALUE(addr); 973 } 974 975 #define ASYNC_PF_PER_VCPU 64 976 struct kvm_arch_async_pf { 977 unsigned long pfault_token; 978 }; 979 980 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu); 981 982 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 983 struct kvm_async_pf *work); 984 985 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 986 struct kvm_async_pf *work); 987 988 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 989 struct kvm_async_pf *work); 990 991 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {} 992 993 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 994 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 995 unsigned long *aqm, unsigned long *adm); 996 997 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 998 extern char sie_exit; 999 1000 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 1001 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 1002 1003 static inline void kvm_arch_hardware_disable(void) {} 1004 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 1005 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 1006 static inline void kvm_arch_free_memslot(struct kvm *kvm, 1007 struct kvm_memory_slot *slot) {} 1008 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 1009 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 1010 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 1011 struct kvm_memory_slot *slot) {} 1012 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 1013 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 1014 1015 #endif 1016