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 <asm/debug.h> 22 #include <asm/cpu.h> 23 #include <asm/fpu/api.h> 24 #include <asm/isc.h> 25 #include <asm/guarded_storage.h> 26 27 #define KVM_S390_BSCA_CPU_SLOTS 64 28 #define KVM_S390_ESCA_CPU_SLOTS 248 29 #define KVM_MAX_VCPUS 255 30 #define KVM_USER_MEM_SLOTS 32 31 32 /* 33 * These seem to be used for allocating ->chip in the routing table, 34 * which we don't use. 4096 is an out-of-thin-air value. If we need 35 * 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 4096 39 #define KVM_HALT_POLL_NS_DEFAULT 80000 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 48 #define SIGP_CTRL_C 0x80 49 #define SIGP_CTRL_SCN_MASK 0x3f 50 51 union bsca_sigp_ctrl { 52 __u8 value; 53 struct { 54 __u8 c : 1; 55 __u8 r : 1; 56 __u8 scn : 6; 57 }; 58 }; 59 60 union esca_sigp_ctrl { 61 __u16 value; 62 struct { 63 __u8 c : 1; 64 __u8 reserved: 7; 65 __u8 scn; 66 }; 67 }; 68 69 struct esca_entry { 70 union esca_sigp_ctrl sigp_ctrl; 71 __u16 reserved1[3]; 72 __u64 sda; 73 __u64 reserved2[6]; 74 }; 75 76 struct bsca_entry { 77 __u8 reserved0; 78 union bsca_sigp_ctrl sigp_ctrl; 79 __u16 reserved[3]; 80 __u64 sda; 81 __u64 reserved2[2]; 82 }; 83 84 union ipte_control { 85 unsigned long val; 86 struct { 87 unsigned long k : 1; 88 unsigned long kh : 31; 89 unsigned long kg : 32; 90 }; 91 }; 92 93 struct bsca_block { 94 union ipte_control ipte_control; 95 __u64 reserved[5]; 96 __u64 mcn; 97 __u64 reserved2; 98 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 99 }; 100 101 struct esca_block { 102 union ipte_control ipte_control; 103 __u64 reserved1[7]; 104 __u64 mcn[4]; 105 __u64 reserved2[20]; 106 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 107 }; 108 109 /* 110 * This struct is used to store some machine check info from lowcore 111 * for machine checks that happen while the guest is running. 112 * This info in host's lowcore might be overwritten by a second machine 113 * check from host when host is in the machine check's high-level handling. 114 * The size is 24 bytes. 115 */ 116 struct mcck_volatile_info { 117 __u64 mcic; 118 __u64 failing_storage_address; 119 __u32 ext_damage_code; 120 __u32 reserved; 121 }; 122 123 #define CPUSTAT_STOPPED 0x80000000 124 #define CPUSTAT_WAIT 0x10000000 125 #define CPUSTAT_ECALL_PEND 0x08000000 126 #define CPUSTAT_STOP_INT 0x04000000 127 #define CPUSTAT_IO_INT 0x02000000 128 #define CPUSTAT_EXT_INT 0x01000000 129 #define CPUSTAT_RUNNING 0x00800000 130 #define CPUSTAT_RETAINED 0x00400000 131 #define CPUSTAT_TIMING_SUB 0x00020000 132 #define CPUSTAT_SIE_SUB 0x00010000 133 #define CPUSTAT_RRF 0x00008000 134 #define CPUSTAT_SLSV 0x00004000 135 #define CPUSTAT_SLSR 0x00002000 136 #define CPUSTAT_ZARCH 0x00000800 137 #define CPUSTAT_MCDS 0x00000100 138 #define CPUSTAT_KSS 0x00000200 139 #define CPUSTAT_SM 0x00000080 140 #define CPUSTAT_IBS 0x00000040 141 #define CPUSTAT_GED2 0x00000010 142 #define CPUSTAT_G 0x00000008 143 #define CPUSTAT_GED 0x00000004 144 #define CPUSTAT_J 0x00000002 145 #define CPUSTAT_P 0x00000001 146 147 struct kvm_s390_sie_block { 148 atomic_t cpuflags; /* 0x0000 */ 149 __u32 : 1; /* 0x0004 */ 150 __u32 prefix : 18; 151 __u32 : 1; 152 __u32 ibc : 12; 153 __u8 reserved08[4]; /* 0x0008 */ 154 #define PROG_IN_SIE (1<<0) 155 __u32 prog0c; /* 0x000c */ 156 __u8 reserved10[16]; /* 0x0010 */ 157 #define PROG_BLOCK_SIE (1<<0) 158 #define PROG_REQUEST (1<<1) 159 atomic_t prog20; /* 0x0020 */ 160 __u8 reserved24[4]; /* 0x0024 */ 161 __u64 cputm; /* 0x0028 */ 162 __u64 ckc; /* 0x0030 */ 163 __u64 epoch; /* 0x0038 */ 164 __u32 svcc; /* 0x0040 */ 165 #define LCTL_CR0 0x8000 166 #define LCTL_CR6 0x0200 167 #define LCTL_CR9 0x0040 168 #define LCTL_CR10 0x0020 169 #define LCTL_CR11 0x0010 170 #define LCTL_CR14 0x0002 171 __u16 lctl; /* 0x0044 */ 172 __s16 icpua; /* 0x0046 */ 173 #define ICTL_OPEREXC 0x80000000 174 #define ICTL_PINT 0x20000000 175 #define ICTL_LPSW 0x00400000 176 #define ICTL_STCTL 0x00040000 177 #define ICTL_ISKE 0x00004000 178 #define ICTL_SSKE 0x00002000 179 #define ICTL_RRBE 0x00001000 180 #define ICTL_TPROT 0x00000200 181 __u32 ictl; /* 0x0048 */ 182 #define ECA_CEI 0x80000000 183 #define ECA_IB 0x40000000 184 #define ECA_SIGPI 0x10000000 185 #define ECA_MVPGI 0x01000000 186 #define ECA_AIV 0x00200000 187 #define ECA_VX 0x00020000 188 #define ECA_PROTEXCI 0x00002000 189 #define ECA_SII 0x00000001 190 __u32 eca; /* 0x004c */ 191 #define ICPT_INST 0x04 192 #define ICPT_PROGI 0x08 193 #define ICPT_INSTPROGI 0x0C 194 #define ICPT_EXTREQ 0x10 195 #define ICPT_EXTINT 0x14 196 #define ICPT_IOREQ 0x18 197 #define ICPT_WAIT 0x1c 198 #define ICPT_VALIDITY 0x20 199 #define ICPT_STOP 0x28 200 #define ICPT_OPEREXC 0x2C 201 #define ICPT_PARTEXEC 0x38 202 #define ICPT_IOINST 0x40 203 #define ICPT_KSS 0x5c 204 __u8 icptcode; /* 0x0050 */ 205 __u8 icptstatus; /* 0x0051 */ 206 __u16 ihcpu; /* 0x0052 */ 207 __u8 reserved54[2]; /* 0x0054 */ 208 __u16 ipa; /* 0x0056 */ 209 __u32 ipb; /* 0x0058 */ 210 __u32 scaoh; /* 0x005c */ 211 #define FPF_BPBC 0x20 212 __u8 fpf; /* 0x0060 */ 213 #define ECB_GS 0x40 214 #define ECB_TE 0x10 215 #define ECB_SRSI 0x04 216 #define ECB_HOSTPROTINT 0x02 217 __u8 ecb; /* 0x0061 */ 218 #define ECB2_CMMA 0x80 219 #define ECB2_IEP 0x20 220 #define ECB2_PFMFI 0x08 221 #define ECB2_ESCA 0x04 222 __u8 ecb2; /* 0x0062 */ 223 #define ECB3_DEA 0x08 224 #define ECB3_AES 0x04 225 #define ECB3_RI 0x01 226 __u8 ecb3; /* 0x0063 */ 227 __u32 scaol; /* 0x0064 */ 228 __u8 reserved68; /* 0x0068 */ 229 __u8 epdx; /* 0x0069 */ 230 __u8 reserved6a[2]; /* 0x006a */ 231 __u32 todpr; /* 0x006c */ 232 #define GISA_FORMAT1 0x00000001 233 __u32 gd; /* 0x0070 */ 234 __u8 reserved74[12]; /* 0x0074 */ 235 __u64 mso; /* 0x0080 */ 236 __u64 msl; /* 0x0088 */ 237 psw_t gpsw; /* 0x0090 */ 238 __u64 gg14; /* 0x00a0 */ 239 __u64 gg15; /* 0x00a8 */ 240 __u8 reservedb0[20]; /* 0x00b0 */ 241 __u16 extcpuaddr; /* 0x00c4 */ 242 __u16 eic; /* 0x00c6 */ 243 __u32 reservedc8; /* 0x00c8 */ 244 __u16 pgmilc; /* 0x00cc */ 245 __u16 iprcc; /* 0x00ce */ 246 __u32 dxc; /* 0x00d0 */ 247 __u16 mcn; /* 0x00d4 */ 248 __u8 perc; /* 0x00d6 */ 249 __u8 peratmid; /* 0x00d7 */ 250 __u64 peraddr; /* 0x00d8 */ 251 __u8 eai; /* 0x00e0 */ 252 __u8 peraid; /* 0x00e1 */ 253 __u8 oai; /* 0x00e2 */ 254 __u8 armid; /* 0x00e3 */ 255 __u8 reservede4[4]; /* 0x00e4 */ 256 __u64 tecmc; /* 0x00e8 */ 257 __u8 reservedf0[12]; /* 0x00f0 */ 258 #define CRYCB_FORMAT1 0x00000001 259 #define CRYCB_FORMAT2 0x00000003 260 __u32 crycbd; /* 0x00fc */ 261 __u64 gcr[16]; /* 0x0100 */ 262 __u64 gbea; /* 0x0180 */ 263 __u8 reserved188[8]; /* 0x0188 */ 264 __u64 sdnxo; /* 0x0190 */ 265 __u8 reserved198[8]; /* 0x0198 */ 266 __u32 fac; /* 0x01a0 */ 267 __u8 reserved1a4[20]; /* 0x01a4 */ 268 __u64 cbrlo; /* 0x01b8 */ 269 __u8 reserved1c0[8]; /* 0x01c0 */ 270 #define ECD_HOSTREGMGMT 0x20000000 271 #define ECD_MEF 0x08000000 272 __u32 ecd; /* 0x01c8 */ 273 __u8 reserved1cc[18]; /* 0x01cc */ 274 __u64 pp; /* 0x01de */ 275 __u8 reserved1e6[2]; /* 0x01e6 */ 276 __u64 itdba; /* 0x01e8 */ 277 __u64 riccbd; /* 0x01f0 */ 278 __u64 gvrd; /* 0x01f8 */ 279 } __attribute__((packed)); 280 281 struct kvm_s390_itdb { 282 __u8 data[256]; 283 }; 284 285 struct sie_page { 286 struct kvm_s390_sie_block sie_block; 287 struct mcck_volatile_info mcck_info; /* 0x0200 */ 288 __u8 reserved218[1000]; /* 0x0218 */ 289 struct kvm_s390_itdb itdb; /* 0x0600 */ 290 __u8 reserved700[2304]; /* 0x0700 */ 291 }; 292 293 struct kvm_vcpu_stat { 294 u64 exit_userspace; 295 u64 exit_null; 296 u64 exit_external_request; 297 u64 exit_external_interrupt; 298 u64 exit_stop_request; 299 u64 exit_validity; 300 u64 exit_instruction; 301 u64 exit_pei; 302 u64 halt_successful_poll; 303 u64 halt_attempted_poll; 304 u64 halt_poll_invalid; 305 u64 halt_wakeup; 306 u64 instruction_lctl; 307 u64 instruction_lctlg; 308 u64 instruction_stctl; 309 u64 instruction_stctg; 310 u64 exit_program_interruption; 311 u64 exit_instr_and_program; 312 u64 exit_operation_exception; 313 u64 deliver_external_call; 314 u64 deliver_emergency_signal; 315 u64 deliver_service_signal; 316 u64 deliver_virtio_interrupt; 317 u64 deliver_stop_signal; 318 u64 deliver_prefix_signal; 319 u64 deliver_restart_signal; 320 u64 deliver_program_int; 321 u64 deliver_io_int; 322 u64 exit_wait_state; 323 u64 instruction_epsw; 324 u64 instruction_gs; 325 u64 instruction_io_other; 326 u64 instruction_lpsw; 327 u64 instruction_lpswe; 328 u64 instruction_pfmf; 329 u64 instruction_ptff; 330 u64 instruction_sck; 331 u64 instruction_sckpf; 332 u64 instruction_stidp; 333 u64 instruction_spx; 334 u64 instruction_stpx; 335 u64 instruction_stap; 336 u64 instruction_iske; 337 u64 instruction_ri; 338 u64 instruction_rrbe; 339 u64 instruction_sske; 340 u64 instruction_ipte_interlock; 341 u64 instruction_stsi; 342 u64 instruction_stfl; 343 u64 instruction_tb; 344 u64 instruction_tpi; 345 u64 instruction_tprot; 346 u64 instruction_tsch; 347 u64 instruction_sie; 348 u64 instruction_essa; 349 u64 instruction_sthyi; 350 u64 instruction_sigp_sense; 351 u64 instruction_sigp_sense_running; 352 u64 instruction_sigp_external_call; 353 u64 instruction_sigp_emergency; 354 u64 instruction_sigp_cond_emergency; 355 u64 instruction_sigp_start; 356 u64 instruction_sigp_stop; 357 u64 instruction_sigp_stop_store_status; 358 u64 instruction_sigp_store_status; 359 u64 instruction_sigp_store_adtl_status; 360 u64 instruction_sigp_arch; 361 u64 instruction_sigp_prefix; 362 u64 instruction_sigp_restart; 363 u64 instruction_sigp_init_cpu_reset; 364 u64 instruction_sigp_cpu_reset; 365 u64 instruction_sigp_unknown; 366 u64 diagnose_10; 367 u64 diagnose_44; 368 u64 diagnose_9c; 369 u64 diagnose_258; 370 u64 diagnose_308; 371 u64 diagnose_500; 372 u64 diagnose_other; 373 }; 374 375 #define PGM_OPERATION 0x01 376 #define PGM_PRIVILEGED_OP 0x02 377 #define PGM_EXECUTE 0x03 378 #define PGM_PROTECTION 0x04 379 #define PGM_ADDRESSING 0x05 380 #define PGM_SPECIFICATION 0x06 381 #define PGM_DATA 0x07 382 #define PGM_FIXED_POINT_OVERFLOW 0x08 383 #define PGM_FIXED_POINT_DIVIDE 0x09 384 #define PGM_DECIMAL_OVERFLOW 0x0a 385 #define PGM_DECIMAL_DIVIDE 0x0b 386 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 387 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 388 #define PGM_HFP_SIGNIFICANCE 0x0e 389 #define PGM_HFP_DIVIDE 0x0f 390 #define PGM_SEGMENT_TRANSLATION 0x10 391 #define PGM_PAGE_TRANSLATION 0x11 392 #define PGM_TRANSLATION_SPEC 0x12 393 #define PGM_SPECIAL_OPERATION 0x13 394 #define PGM_OPERAND 0x15 395 #define PGM_TRACE_TABEL 0x16 396 #define PGM_VECTOR_PROCESSING 0x1b 397 #define PGM_SPACE_SWITCH 0x1c 398 #define PGM_HFP_SQUARE_ROOT 0x1d 399 #define PGM_PC_TRANSLATION_SPEC 0x1f 400 #define PGM_AFX_TRANSLATION 0x20 401 #define PGM_ASX_TRANSLATION 0x21 402 #define PGM_LX_TRANSLATION 0x22 403 #define PGM_EX_TRANSLATION 0x23 404 #define PGM_PRIMARY_AUTHORITY 0x24 405 #define PGM_SECONDARY_AUTHORITY 0x25 406 #define PGM_LFX_TRANSLATION 0x26 407 #define PGM_LSX_TRANSLATION 0x27 408 #define PGM_ALET_SPECIFICATION 0x28 409 #define PGM_ALEN_TRANSLATION 0x29 410 #define PGM_ALE_SEQUENCE 0x2a 411 #define PGM_ASTE_VALIDITY 0x2b 412 #define PGM_ASTE_SEQUENCE 0x2c 413 #define PGM_EXTENDED_AUTHORITY 0x2d 414 #define PGM_LSTE_SEQUENCE 0x2e 415 #define PGM_ASTE_INSTANCE 0x2f 416 #define PGM_STACK_FULL 0x30 417 #define PGM_STACK_EMPTY 0x31 418 #define PGM_STACK_SPECIFICATION 0x32 419 #define PGM_STACK_TYPE 0x33 420 #define PGM_STACK_OPERATION 0x34 421 #define PGM_ASCE_TYPE 0x38 422 #define PGM_REGION_FIRST_TRANS 0x39 423 #define PGM_REGION_SECOND_TRANS 0x3a 424 #define PGM_REGION_THIRD_TRANS 0x3b 425 #define PGM_MONITOR 0x40 426 #define PGM_PER 0x80 427 #define PGM_CRYPTO_OPERATION 0x119 428 429 /* irq types in ascend order of priorities */ 430 enum irq_types { 431 IRQ_PEND_SET_PREFIX = 0, 432 IRQ_PEND_RESTART, 433 IRQ_PEND_SIGP_STOP, 434 IRQ_PEND_IO_ISC_7, 435 IRQ_PEND_IO_ISC_6, 436 IRQ_PEND_IO_ISC_5, 437 IRQ_PEND_IO_ISC_4, 438 IRQ_PEND_IO_ISC_3, 439 IRQ_PEND_IO_ISC_2, 440 IRQ_PEND_IO_ISC_1, 441 IRQ_PEND_IO_ISC_0, 442 IRQ_PEND_VIRTIO, 443 IRQ_PEND_PFAULT_DONE, 444 IRQ_PEND_PFAULT_INIT, 445 IRQ_PEND_EXT_HOST, 446 IRQ_PEND_EXT_SERVICE, 447 IRQ_PEND_EXT_TIMING, 448 IRQ_PEND_EXT_CPU_TIMER, 449 IRQ_PEND_EXT_CLOCK_COMP, 450 IRQ_PEND_EXT_EXTERNAL, 451 IRQ_PEND_EXT_EMERGENCY, 452 IRQ_PEND_EXT_MALFUNC, 453 IRQ_PEND_EXT_IRQ_KEY, 454 IRQ_PEND_MCHK_REP, 455 IRQ_PEND_PROG, 456 IRQ_PEND_SVC, 457 IRQ_PEND_MCHK_EX, 458 IRQ_PEND_COUNT 459 }; 460 461 /* We have 2M for virtio device descriptor pages. Smallest amount of 462 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 463 */ 464 #define KVM_S390_MAX_VIRTIO_IRQS 87381 465 466 /* 467 * Repressible (non-floating) machine check interrupts 468 * subclass bits in MCIC 469 */ 470 #define MCHK_EXTD_BIT 58 471 #define MCHK_DEGR_BIT 56 472 #define MCHK_WARN_BIT 55 473 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 474 (1UL << MCHK_EXTD_BIT) | \ 475 (1UL << MCHK_WARN_BIT)) 476 477 /* Exigent machine check interrupts subclass bits in MCIC */ 478 #define MCHK_SD_BIT 63 479 #define MCHK_PD_BIT 62 480 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 481 482 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 483 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 484 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 485 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 486 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 487 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 488 (1UL << IRQ_PEND_EXT_TIMING) | \ 489 (1UL << IRQ_PEND_EXT_HOST) | \ 490 (1UL << IRQ_PEND_EXT_SERVICE) | \ 491 (1UL << IRQ_PEND_VIRTIO) | \ 492 (1UL << IRQ_PEND_PFAULT_INIT) | \ 493 (1UL << IRQ_PEND_PFAULT_DONE)) 494 495 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 496 (1UL << IRQ_PEND_IO_ISC_1) | \ 497 (1UL << IRQ_PEND_IO_ISC_2) | \ 498 (1UL << IRQ_PEND_IO_ISC_3) | \ 499 (1UL << IRQ_PEND_IO_ISC_4) | \ 500 (1UL << IRQ_PEND_IO_ISC_5) | \ 501 (1UL << IRQ_PEND_IO_ISC_6) | \ 502 (1UL << IRQ_PEND_IO_ISC_7)) 503 504 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 505 (1UL << IRQ_PEND_MCHK_EX)) 506 507 struct kvm_s390_interrupt_info { 508 struct list_head list; 509 u64 type; 510 union { 511 struct kvm_s390_io_info io; 512 struct kvm_s390_ext_info ext; 513 struct kvm_s390_pgm_info pgm; 514 struct kvm_s390_emerg_info emerg; 515 struct kvm_s390_extcall_info extcall; 516 struct kvm_s390_prefix_info prefix; 517 struct kvm_s390_stop_info stop; 518 struct kvm_s390_mchk_info mchk; 519 }; 520 }; 521 522 struct kvm_s390_irq_payload { 523 struct kvm_s390_io_info io; 524 struct kvm_s390_ext_info ext; 525 struct kvm_s390_pgm_info pgm; 526 struct kvm_s390_emerg_info emerg; 527 struct kvm_s390_extcall_info extcall; 528 struct kvm_s390_prefix_info prefix; 529 struct kvm_s390_stop_info stop; 530 struct kvm_s390_mchk_info mchk; 531 }; 532 533 struct kvm_s390_local_interrupt { 534 spinlock_t lock; 535 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 536 struct kvm_s390_irq_payload irq; 537 unsigned long pending_irqs; 538 }; 539 540 #define FIRQ_LIST_IO_ISC_0 0 541 #define FIRQ_LIST_IO_ISC_1 1 542 #define FIRQ_LIST_IO_ISC_2 2 543 #define FIRQ_LIST_IO_ISC_3 3 544 #define FIRQ_LIST_IO_ISC_4 4 545 #define FIRQ_LIST_IO_ISC_5 5 546 #define FIRQ_LIST_IO_ISC_6 6 547 #define FIRQ_LIST_IO_ISC_7 7 548 #define FIRQ_LIST_PFAULT 8 549 #define FIRQ_LIST_VIRTIO 9 550 #define FIRQ_LIST_COUNT 10 551 #define FIRQ_CNTR_IO 0 552 #define FIRQ_CNTR_SERVICE 1 553 #define FIRQ_CNTR_VIRTIO 2 554 #define FIRQ_CNTR_PFAULT 3 555 #define FIRQ_MAX_COUNT 4 556 557 /* mask the AIS mode for a given ISC */ 558 #define AIS_MODE_MASK(isc) (0x80 >> isc) 559 560 #define KVM_S390_AIS_MODE_ALL 0 561 #define KVM_S390_AIS_MODE_SINGLE 1 562 563 struct kvm_s390_float_interrupt { 564 unsigned long pending_irqs; 565 spinlock_t lock; 566 struct list_head lists[FIRQ_LIST_COUNT]; 567 int counters[FIRQ_MAX_COUNT]; 568 struct kvm_s390_mchk_info mchk; 569 struct kvm_s390_ext_info srv_signal; 570 int next_rr_cpu; 571 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)]; 572 struct mutex ais_lock; 573 u8 simm; 574 u8 nimm; 575 }; 576 577 struct kvm_hw_wp_info_arch { 578 unsigned long addr; 579 unsigned long phys_addr; 580 int len; 581 char *old_data; 582 }; 583 584 struct kvm_hw_bp_info_arch { 585 unsigned long addr; 586 int len; 587 }; 588 589 /* 590 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 591 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 592 * arch/s390/include/uapi/asm/kvm.h 593 */ 594 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 595 596 #define guestdbg_enabled(vcpu) \ 597 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 598 #define guestdbg_sstep_enabled(vcpu) \ 599 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 600 #define guestdbg_hw_bp_enabled(vcpu) \ 601 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 602 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 603 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 604 605 struct kvm_guestdbg_info_arch { 606 unsigned long cr0; 607 unsigned long cr9; 608 unsigned long cr10; 609 unsigned long cr11; 610 struct kvm_hw_bp_info_arch *hw_bp_info; 611 struct kvm_hw_wp_info_arch *hw_wp_info; 612 int nr_hw_bp; 613 int nr_hw_wp; 614 unsigned long last_bp; 615 }; 616 617 struct kvm_vcpu_arch { 618 struct kvm_s390_sie_block *sie_block; 619 /* if vsie is active, currently executed shadow sie control block */ 620 struct kvm_s390_sie_block *vsie_block; 621 unsigned int host_acrs[NUM_ACRS]; 622 struct gs_cb *host_gscb; 623 struct fpu host_fpregs; 624 struct kvm_s390_local_interrupt local_int; 625 struct hrtimer ckc_timer; 626 struct kvm_s390_pgm_info pgm; 627 struct gmap *gmap; 628 /* backup location for the currently enabled gmap when scheduled out */ 629 struct gmap *enabled_gmap; 630 struct kvm_guestdbg_info_arch guestdbg; 631 unsigned long pfault_token; 632 unsigned long pfault_select; 633 unsigned long pfault_compare; 634 bool cputm_enabled; 635 /* 636 * The seqcount protects updates to cputm_start and sie_block.cputm, 637 * this way we can have non-blocking reads with consistent values. 638 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 639 * values and to start/stop/enable/disable cpu timer accounting. 640 */ 641 seqcount_t cputm_seqcount; 642 __u64 cputm_start; 643 bool gs_enabled; 644 }; 645 646 struct kvm_vm_stat { 647 ulong remote_tlb_flush; 648 }; 649 650 struct kvm_arch_memory_slot { 651 }; 652 653 struct s390_map_info { 654 struct list_head list; 655 __u64 guest_addr; 656 __u64 addr; 657 struct page *page; 658 }; 659 660 struct s390_io_adapter { 661 unsigned int id; 662 int isc; 663 bool maskable; 664 bool masked; 665 bool swap; 666 bool suppressible; 667 struct rw_semaphore maps_lock; 668 struct list_head maps; 669 atomic_t nr_maps; 670 }; 671 672 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 673 #define MAX_S390_ADAPTER_MAPS 256 674 675 /* maximum size of facilities and facility mask is 2k bytes */ 676 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 677 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 678 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 679 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 680 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 681 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 682 683 struct kvm_s390_cpu_model { 684 /* facility mask supported by kvm & hosting machine */ 685 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64]; 686 /* facility list requested by guest (in dma page) */ 687 __u64 *fac_list; 688 u64 cpuid; 689 unsigned short ibc; 690 }; 691 692 struct kvm_s390_crypto { 693 struct kvm_s390_crypto_cb *crycb; 694 __u32 crycbd; 695 __u8 aes_kw; 696 __u8 dea_kw; 697 }; 698 699 #define APCB0_MASK_SIZE 1 700 struct kvm_s390_apcb0 { 701 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 702 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 703 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 704 __u64 reserved18; /* 0x0018 */ 705 }; 706 707 #define APCB1_MASK_SIZE 4 708 struct kvm_s390_apcb1 { 709 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 710 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 711 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 712 __u64 reserved60[4]; /* 0x0060 */ 713 }; 714 715 struct kvm_s390_crypto_cb { 716 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 717 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 718 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 719 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 720 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 721 }; 722 723 struct kvm_s390_gisa { 724 union { 725 struct { /* common to all formats */ 726 u32 next_alert; 727 u8 ipm; 728 u8 reserved01[2]; 729 u8 iam; 730 }; 731 struct { /* format 0 */ 732 u32 next_alert; 733 u8 ipm; 734 u8 reserved01; 735 u8 : 6; 736 u8 g : 1; 737 u8 c : 1; 738 u8 iam; 739 u8 reserved02[4]; 740 u32 airq_count; 741 } g0; 742 struct { /* format 1 */ 743 u32 next_alert; 744 u8 ipm; 745 u8 simm; 746 u8 nimm; 747 u8 iam; 748 u8 aism[8]; 749 u8 : 6; 750 u8 g : 1; 751 u8 c : 1; 752 u8 reserved03[11]; 753 u32 airq_count; 754 } g1; 755 }; 756 }; 757 758 /* 759 * sie_page2 has to be allocated as DMA because fac_list, crycb and 760 * gisa need 31bit addresses in the sie control block. 761 */ 762 struct sie_page2 { 763 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 764 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 765 struct kvm_s390_gisa gisa; /* 0x0900 */ 766 u8 reserved920[0x1000 - 0x920]; /* 0x0920 */ 767 }; 768 769 struct kvm_s390_vsie { 770 struct mutex mutex; 771 struct radix_tree_root addr_to_page; 772 int page_count; 773 int next; 774 struct page *pages[KVM_MAX_VCPUS]; 775 }; 776 777 struct kvm_s390_migration_state { 778 unsigned long bitmap_size; /* in bits (number of guest pages) */ 779 atomic64_t dirty_pages; /* number of dirty pages */ 780 unsigned long *pgste_bitmap; 781 }; 782 783 struct kvm_arch{ 784 void *sca; 785 int use_esca; 786 rwlock_t sca_lock; 787 debug_info_t *dbf; 788 struct kvm_s390_float_interrupt float_int; 789 struct kvm_device *flic; 790 struct gmap *gmap; 791 unsigned long mem_limit; 792 int css_support; 793 int use_irqchip; 794 int use_cmma; 795 int user_cpu_state_ctrl; 796 int user_sigp; 797 int user_stsi; 798 int user_instr0; 799 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 800 wait_queue_head_t ipte_wq; 801 int ipte_lock_count; 802 struct mutex ipte_mutex; 803 spinlock_t start_stop_lock; 804 struct sie_page2 *sie_page2; 805 struct kvm_s390_cpu_model model; 806 struct kvm_s390_crypto crypto; 807 struct kvm_s390_vsie vsie; 808 u8 epdx; 809 u64 epoch; 810 struct kvm_s390_migration_state *migration_state; 811 /* subset of available cpu features enabled by user space */ 812 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 813 struct kvm_s390_gisa *gisa; 814 }; 815 816 #define KVM_HVA_ERR_BAD (-1UL) 817 #define KVM_HVA_ERR_RO_BAD (-2UL) 818 819 static inline bool kvm_is_error_hva(unsigned long addr) 820 { 821 return IS_ERR_VALUE(addr); 822 } 823 824 #define ASYNC_PF_PER_VCPU 64 825 struct kvm_arch_async_pf { 826 unsigned long pfault_token; 827 }; 828 829 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 830 831 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 832 struct kvm_async_pf *work); 833 834 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 835 struct kvm_async_pf *work); 836 837 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 838 struct kvm_async_pf *work); 839 840 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 841 extern char sie_exit; 842 843 static inline void kvm_arch_hardware_disable(void) {} 844 static inline void kvm_arch_check_processor_compat(void *rtn) {} 845 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 846 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} 847 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 848 static inline void kvm_arch_free_memslot(struct kvm *kvm, 849 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {} 850 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {} 851 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 852 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 853 struct kvm_memory_slot *slot) {} 854 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 855 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 856 857 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu); 858 859 #endif 860