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 #define KVM_USER_MEM_SLOTS 32 32 33 /* 34 * These seem to be used for allocating ->chip in the routing table, 35 * which we don't use. 4096 is an out-of-thin-air value. If we need 36 * 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 4096 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 50 #define SIGP_CTRL_C 0x80 51 #define SIGP_CTRL_SCN_MASK 0x3f 52 53 union bsca_sigp_ctrl { 54 __u8 value; 55 struct { 56 __u8 c : 1; 57 __u8 r : 1; 58 __u8 scn : 6; 59 }; 60 }; 61 62 union esca_sigp_ctrl { 63 __u16 value; 64 struct { 65 __u8 c : 1; 66 __u8 reserved: 7; 67 __u8 scn; 68 }; 69 }; 70 71 struct esca_entry { 72 union esca_sigp_ctrl sigp_ctrl; 73 __u16 reserved1[3]; 74 __u64 sda; 75 __u64 reserved2[6]; 76 }; 77 78 struct bsca_entry { 79 __u8 reserved0; 80 union bsca_sigp_ctrl sigp_ctrl; 81 __u16 reserved[3]; 82 __u64 sda; 83 __u64 reserved2[2]; 84 }; 85 86 union ipte_control { 87 unsigned long val; 88 struct { 89 unsigned long k : 1; 90 unsigned long kh : 31; 91 unsigned long kg : 32; 92 }; 93 }; 94 95 struct bsca_block { 96 union ipte_control ipte_control; 97 __u64 reserved[5]; 98 __u64 mcn; 99 __u64 reserved2; 100 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS]; 101 }; 102 103 struct esca_block { 104 union ipte_control ipte_control; 105 __u64 reserved1[7]; 106 __u64 mcn[4]; 107 __u64 reserved2[20]; 108 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS]; 109 }; 110 111 /* 112 * This struct is used to store some machine check info from lowcore 113 * for machine checks that happen while the guest is running. 114 * This info in host's lowcore might be overwritten by a second machine 115 * check from host when host is in the machine check's high-level handling. 116 * The size is 24 bytes. 117 */ 118 struct mcck_volatile_info { 119 __u64 mcic; 120 __u64 failing_storage_address; 121 __u32 ext_damage_code; 122 __u32 reserved; 123 }; 124 125 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \ 126 CR0_MEASUREMENT_ALERT_SUBMASK) 127 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \ 128 CR14_EXTERNAL_DAMAGE_SUBMASK) 129 130 #define CPUSTAT_STOPPED 0x80000000 131 #define CPUSTAT_WAIT 0x10000000 132 #define CPUSTAT_ECALL_PEND 0x08000000 133 #define CPUSTAT_STOP_INT 0x04000000 134 #define CPUSTAT_IO_INT 0x02000000 135 #define CPUSTAT_EXT_INT 0x01000000 136 #define CPUSTAT_RUNNING 0x00800000 137 #define CPUSTAT_RETAINED 0x00400000 138 #define CPUSTAT_TIMING_SUB 0x00020000 139 #define CPUSTAT_SIE_SUB 0x00010000 140 #define CPUSTAT_RRF 0x00008000 141 #define CPUSTAT_SLSV 0x00004000 142 #define CPUSTAT_SLSR 0x00002000 143 #define CPUSTAT_ZARCH 0x00000800 144 #define CPUSTAT_MCDS 0x00000100 145 #define CPUSTAT_KSS 0x00000200 146 #define CPUSTAT_SM 0x00000080 147 #define CPUSTAT_IBS 0x00000040 148 #define CPUSTAT_GED2 0x00000010 149 #define CPUSTAT_G 0x00000008 150 #define CPUSTAT_GED 0x00000004 151 #define CPUSTAT_J 0x00000002 152 #define CPUSTAT_P 0x00000001 153 154 struct kvm_s390_sie_block { 155 atomic_t cpuflags; /* 0x0000 */ 156 __u32 : 1; /* 0x0004 */ 157 __u32 prefix : 18; 158 __u32 : 1; 159 __u32 ibc : 12; 160 __u8 reserved08[4]; /* 0x0008 */ 161 #define PROG_IN_SIE (1<<0) 162 __u32 prog0c; /* 0x000c */ 163 __u8 reserved10[16]; /* 0x0010 */ 164 #define PROG_BLOCK_SIE (1<<0) 165 #define PROG_REQUEST (1<<1) 166 atomic_t prog20; /* 0x0020 */ 167 __u8 reserved24[4]; /* 0x0024 */ 168 __u64 cputm; /* 0x0028 */ 169 __u64 ckc; /* 0x0030 */ 170 __u64 epoch; /* 0x0038 */ 171 __u32 svcc; /* 0x0040 */ 172 #define LCTL_CR0 0x8000 173 #define LCTL_CR6 0x0200 174 #define LCTL_CR9 0x0040 175 #define LCTL_CR10 0x0020 176 #define LCTL_CR11 0x0010 177 #define LCTL_CR14 0x0002 178 __u16 lctl; /* 0x0044 */ 179 __s16 icpua; /* 0x0046 */ 180 #define ICTL_OPEREXC 0x80000000 181 #define ICTL_PINT 0x20000000 182 #define ICTL_LPSW 0x00400000 183 #define ICTL_STCTL 0x00040000 184 #define ICTL_ISKE 0x00004000 185 #define ICTL_SSKE 0x00002000 186 #define ICTL_RRBE 0x00001000 187 #define ICTL_TPROT 0x00000200 188 __u32 ictl; /* 0x0048 */ 189 #define ECA_CEI 0x80000000 190 #define ECA_IB 0x40000000 191 #define ECA_SIGPI 0x10000000 192 #define ECA_MVPGI 0x01000000 193 #define ECA_AIV 0x00200000 194 #define ECA_VX 0x00020000 195 #define ECA_PROTEXCI 0x00002000 196 #define ECA_APIE 0x00000008 197 #define ECA_SII 0x00000001 198 __u32 eca; /* 0x004c */ 199 #define ICPT_INST 0x04 200 #define ICPT_PROGI 0x08 201 #define ICPT_INSTPROGI 0x0C 202 #define ICPT_EXTREQ 0x10 203 #define ICPT_EXTINT 0x14 204 #define ICPT_IOREQ 0x18 205 #define ICPT_WAIT 0x1c 206 #define ICPT_VALIDITY 0x20 207 #define ICPT_STOP 0x28 208 #define ICPT_OPEREXC 0x2C 209 #define ICPT_PARTEXEC 0x38 210 #define ICPT_IOINST 0x40 211 #define ICPT_KSS 0x5c 212 __u8 icptcode; /* 0x0050 */ 213 __u8 icptstatus; /* 0x0051 */ 214 __u16 ihcpu; /* 0x0052 */ 215 __u8 reserved54[2]; /* 0x0054 */ 216 __u16 ipa; /* 0x0056 */ 217 __u32 ipb; /* 0x0058 */ 218 __u32 scaoh; /* 0x005c */ 219 #define FPF_BPBC 0x20 220 __u8 fpf; /* 0x0060 */ 221 #define ECB_GS 0x40 222 #define ECB_TE 0x10 223 #define ECB_SRSI 0x04 224 #define ECB_HOSTPROTINT 0x02 225 __u8 ecb; /* 0x0061 */ 226 #define ECB2_CMMA 0x80 227 #define ECB2_IEP 0x20 228 #define ECB2_PFMFI 0x08 229 #define ECB2_ESCA 0x04 230 __u8 ecb2; /* 0x0062 */ 231 #define ECB3_DEA 0x08 232 #define ECB3_AES 0x04 233 #define ECB3_RI 0x01 234 __u8 ecb3; /* 0x0063 */ 235 __u32 scaol; /* 0x0064 */ 236 __u8 reserved68; /* 0x0068 */ 237 __u8 epdx; /* 0x0069 */ 238 __u8 reserved6a[2]; /* 0x006a */ 239 __u32 todpr; /* 0x006c */ 240 #define GISA_FORMAT1 0x00000001 241 __u32 gd; /* 0x0070 */ 242 __u8 reserved74[12]; /* 0x0074 */ 243 __u64 mso; /* 0x0080 */ 244 __u64 msl; /* 0x0088 */ 245 psw_t gpsw; /* 0x0090 */ 246 __u64 gg14; /* 0x00a0 */ 247 __u64 gg15; /* 0x00a8 */ 248 __u8 reservedb0[8]; /* 0x00b0 */ 249 #define HPID_KVM 0x4 250 #define HPID_VSIE 0x5 251 __u8 hpid; /* 0x00b8 */ 252 __u8 reservedb9[11]; /* 0x00b9 */ 253 __u16 extcpuaddr; /* 0x00c4 */ 254 __u16 eic; /* 0x00c6 */ 255 __u32 reservedc8; /* 0x00c8 */ 256 __u16 pgmilc; /* 0x00cc */ 257 __u16 iprcc; /* 0x00ce */ 258 __u32 dxc; /* 0x00d0 */ 259 __u16 mcn; /* 0x00d4 */ 260 __u8 perc; /* 0x00d6 */ 261 __u8 peratmid; /* 0x00d7 */ 262 __u64 peraddr; /* 0x00d8 */ 263 __u8 eai; /* 0x00e0 */ 264 __u8 peraid; /* 0x00e1 */ 265 __u8 oai; /* 0x00e2 */ 266 __u8 armid; /* 0x00e3 */ 267 __u8 reservede4[4]; /* 0x00e4 */ 268 __u64 tecmc; /* 0x00e8 */ 269 __u8 reservedf0[12]; /* 0x00f0 */ 270 #define CRYCB_FORMAT_MASK 0x00000003 271 #define CRYCB_FORMAT0 0x00000000 272 #define CRYCB_FORMAT1 0x00000001 273 #define CRYCB_FORMAT2 0x00000003 274 __u32 crycbd; /* 0x00fc */ 275 __u64 gcr[16]; /* 0x0100 */ 276 __u64 gbea; /* 0x0180 */ 277 __u8 reserved188[8]; /* 0x0188 */ 278 __u64 sdnxo; /* 0x0190 */ 279 __u8 reserved198[8]; /* 0x0198 */ 280 __u32 fac; /* 0x01a0 */ 281 __u8 reserved1a4[20]; /* 0x01a4 */ 282 __u64 cbrlo; /* 0x01b8 */ 283 __u8 reserved1c0[8]; /* 0x01c0 */ 284 #define ECD_HOSTREGMGMT 0x20000000 285 #define ECD_MEF 0x08000000 286 #define ECD_ETOKENF 0x02000000 287 #define ECD_ECC 0x00200000 288 __u32 ecd; /* 0x01c8 */ 289 __u8 reserved1cc[18]; /* 0x01cc */ 290 __u64 pp; /* 0x01de */ 291 __u8 reserved1e6[2]; /* 0x01e6 */ 292 __u64 itdba; /* 0x01e8 */ 293 __u64 riccbd; /* 0x01f0 */ 294 __u64 gvrd; /* 0x01f8 */ 295 } __attribute__((packed)); 296 297 struct kvm_s390_itdb { 298 __u8 data[256]; 299 }; 300 301 struct sie_page { 302 struct kvm_s390_sie_block sie_block; 303 struct mcck_volatile_info mcck_info; /* 0x0200 */ 304 __u8 reserved218[1000]; /* 0x0218 */ 305 struct kvm_s390_itdb itdb; /* 0x0600 */ 306 __u8 reserved700[2304]; /* 0x0700 */ 307 }; 308 309 struct kvm_vcpu_stat { 310 u64 exit_userspace; 311 u64 exit_null; 312 u64 exit_external_request; 313 u64 exit_io_request; 314 u64 exit_external_interrupt; 315 u64 exit_stop_request; 316 u64 exit_validity; 317 u64 exit_instruction; 318 u64 exit_pei; 319 u64 halt_successful_poll; 320 u64 halt_attempted_poll; 321 u64 halt_poll_invalid; 322 u64 halt_no_poll_steal; 323 u64 halt_wakeup; 324 u64 instruction_lctl; 325 u64 instruction_lctlg; 326 u64 instruction_stctl; 327 u64 instruction_stctg; 328 u64 exit_program_interruption; 329 u64 exit_instr_and_program; 330 u64 exit_operation_exception; 331 u64 deliver_ckc; 332 u64 deliver_cputm; 333 u64 deliver_external_call; 334 u64 deliver_emergency_signal; 335 u64 deliver_service_signal; 336 u64 deliver_virtio; 337 u64 deliver_stop_signal; 338 u64 deliver_prefix_signal; 339 u64 deliver_restart_signal; 340 u64 deliver_program; 341 u64 deliver_io; 342 u64 deliver_machine_check; 343 u64 exit_wait_state; 344 u64 inject_ckc; 345 u64 inject_cputm; 346 u64 inject_external_call; 347 u64 inject_emergency_signal; 348 u64 inject_mchk; 349 u64 inject_pfault_init; 350 u64 inject_program; 351 u64 inject_restart; 352 u64 inject_set_prefix; 353 u64 inject_stop_signal; 354 u64 instruction_epsw; 355 u64 instruction_gs; 356 u64 instruction_io_other; 357 u64 instruction_lpsw; 358 u64 instruction_lpswe; 359 u64 instruction_pfmf; 360 u64 instruction_ptff; 361 u64 instruction_sck; 362 u64 instruction_sckpf; 363 u64 instruction_stidp; 364 u64 instruction_spx; 365 u64 instruction_stpx; 366 u64 instruction_stap; 367 u64 instruction_iske; 368 u64 instruction_ri; 369 u64 instruction_rrbe; 370 u64 instruction_sske; 371 u64 instruction_ipte_interlock; 372 u64 instruction_stsi; 373 u64 instruction_stfl; 374 u64 instruction_tb; 375 u64 instruction_tpi; 376 u64 instruction_tprot; 377 u64 instruction_tsch; 378 u64 instruction_sie; 379 u64 instruction_essa; 380 u64 instruction_sthyi; 381 u64 instruction_sigp_sense; 382 u64 instruction_sigp_sense_running; 383 u64 instruction_sigp_external_call; 384 u64 instruction_sigp_emergency; 385 u64 instruction_sigp_cond_emergency; 386 u64 instruction_sigp_start; 387 u64 instruction_sigp_stop; 388 u64 instruction_sigp_stop_store_status; 389 u64 instruction_sigp_store_status; 390 u64 instruction_sigp_store_adtl_status; 391 u64 instruction_sigp_arch; 392 u64 instruction_sigp_prefix; 393 u64 instruction_sigp_restart; 394 u64 instruction_sigp_init_cpu_reset; 395 u64 instruction_sigp_cpu_reset; 396 u64 instruction_sigp_unknown; 397 u64 diagnose_10; 398 u64 diagnose_44; 399 u64 diagnose_9c; 400 u64 diagnose_9c_ignored; 401 u64 diagnose_258; 402 u64 diagnose_308; 403 u64 diagnose_500; 404 u64 diagnose_other; 405 }; 406 407 #define PGM_OPERATION 0x01 408 #define PGM_PRIVILEGED_OP 0x02 409 #define PGM_EXECUTE 0x03 410 #define PGM_PROTECTION 0x04 411 #define PGM_ADDRESSING 0x05 412 #define PGM_SPECIFICATION 0x06 413 #define PGM_DATA 0x07 414 #define PGM_FIXED_POINT_OVERFLOW 0x08 415 #define PGM_FIXED_POINT_DIVIDE 0x09 416 #define PGM_DECIMAL_OVERFLOW 0x0a 417 #define PGM_DECIMAL_DIVIDE 0x0b 418 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 419 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 420 #define PGM_HFP_SIGNIFICANCE 0x0e 421 #define PGM_HFP_DIVIDE 0x0f 422 #define PGM_SEGMENT_TRANSLATION 0x10 423 #define PGM_PAGE_TRANSLATION 0x11 424 #define PGM_TRANSLATION_SPEC 0x12 425 #define PGM_SPECIAL_OPERATION 0x13 426 #define PGM_OPERAND 0x15 427 #define PGM_TRACE_TABEL 0x16 428 #define PGM_VECTOR_PROCESSING 0x1b 429 #define PGM_SPACE_SWITCH 0x1c 430 #define PGM_HFP_SQUARE_ROOT 0x1d 431 #define PGM_PC_TRANSLATION_SPEC 0x1f 432 #define PGM_AFX_TRANSLATION 0x20 433 #define PGM_ASX_TRANSLATION 0x21 434 #define PGM_LX_TRANSLATION 0x22 435 #define PGM_EX_TRANSLATION 0x23 436 #define PGM_PRIMARY_AUTHORITY 0x24 437 #define PGM_SECONDARY_AUTHORITY 0x25 438 #define PGM_LFX_TRANSLATION 0x26 439 #define PGM_LSX_TRANSLATION 0x27 440 #define PGM_ALET_SPECIFICATION 0x28 441 #define PGM_ALEN_TRANSLATION 0x29 442 #define PGM_ALE_SEQUENCE 0x2a 443 #define PGM_ASTE_VALIDITY 0x2b 444 #define PGM_ASTE_SEQUENCE 0x2c 445 #define PGM_EXTENDED_AUTHORITY 0x2d 446 #define PGM_LSTE_SEQUENCE 0x2e 447 #define PGM_ASTE_INSTANCE 0x2f 448 #define PGM_STACK_FULL 0x30 449 #define PGM_STACK_EMPTY 0x31 450 #define PGM_STACK_SPECIFICATION 0x32 451 #define PGM_STACK_TYPE 0x33 452 #define PGM_STACK_OPERATION 0x34 453 #define PGM_ASCE_TYPE 0x38 454 #define PGM_REGION_FIRST_TRANS 0x39 455 #define PGM_REGION_SECOND_TRANS 0x3a 456 #define PGM_REGION_THIRD_TRANS 0x3b 457 #define PGM_MONITOR 0x40 458 #define PGM_PER 0x80 459 #define PGM_CRYPTO_OPERATION 0x119 460 461 /* irq types in ascend order of priorities */ 462 enum irq_types { 463 IRQ_PEND_SET_PREFIX = 0, 464 IRQ_PEND_RESTART, 465 IRQ_PEND_SIGP_STOP, 466 IRQ_PEND_IO_ISC_7, 467 IRQ_PEND_IO_ISC_6, 468 IRQ_PEND_IO_ISC_5, 469 IRQ_PEND_IO_ISC_4, 470 IRQ_PEND_IO_ISC_3, 471 IRQ_PEND_IO_ISC_2, 472 IRQ_PEND_IO_ISC_1, 473 IRQ_PEND_IO_ISC_0, 474 IRQ_PEND_VIRTIO, 475 IRQ_PEND_PFAULT_DONE, 476 IRQ_PEND_PFAULT_INIT, 477 IRQ_PEND_EXT_HOST, 478 IRQ_PEND_EXT_SERVICE, 479 IRQ_PEND_EXT_TIMING, 480 IRQ_PEND_EXT_CPU_TIMER, 481 IRQ_PEND_EXT_CLOCK_COMP, 482 IRQ_PEND_EXT_EXTERNAL, 483 IRQ_PEND_EXT_EMERGENCY, 484 IRQ_PEND_EXT_MALFUNC, 485 IRQ_PEND_EXT_IRQ_KEY, 486 IRQ_PEND_MCHK_REP, 487 IRQ_PEND_PROG, 488 IRQ_PEND_SVC, 489 IRQ_PEND_MCHK_EX, 490 IRQ_PEND_COUNT 491 }; 492 493 /* We have 2M for virtio device descriptor pages. Smallest amount of 494 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381 495 */ 496 #define KVM_S390_MAX_VIRTIO_IRQS 87381 497 498 /* 499 * Repressible (non-floating) machine check interrupts 500 * subclass bits in MCIC 501 */ 502 #define MCHK_EXTD_BIT 58 503 #define MCHK_DEGR_BIT 56 504 #define MCHK_WARN_BIT 55 505 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \ 506 (1UL << MCHK_EXTD_BIT) | \ 507 (1UL << MCHK_WARN_BIT)) 508 509 /* Exigent machine check interrupts subclass bits in MCIC */ 510 #define MCHK_SD_BIT 63 511 #define MCHK_PD_BIT 62 512 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT)) 513 514 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \ 515 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \ 516 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \ 517 (1UL << IRQ_PEND_EXT_MALFUNC) | \ 518 (1UL << IRQ_PEND_EXT_EMERGENCY) | \ 519 (1UL << IRQ_PEND_EXT_EXTERNAL) | \ 520 (1UL << IRQ_PEND_EXT_TIMING) | \ 521 (1UL << IRQ_PEND_EXT_HOST) | \ 522 (1UL << IRQ_PEND_EXT_SERVICE) | \ 523 (1UL << IRQ_PEND_VIRTIO) | \ 524 (1UL << IRQ_PEND_PFAULT_INIT) | \ 525 (1UL << IRQ_PEND_PFAULT_DONE)) 526 527 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \ 528 (1UL << IRQ_PEND_IO_ISC_1) | \ 529 (1UL << IRQ_PEND_IO_ISC_2) | \ 530 (1UL << IRQ_PEND_IO_ISC_3) | \ 531 (1UL << IRQ_PEND_IO_ISC_4) | \ 532 (1UL << IRQ_PEND_IO_ISC_5) | \ 533 (1UL << IRQ_PEND_IO_ISC_6) | \ 534 (1UL << IRQ_PEND_IO_ISC_7)) 535 536 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \ 537 (1UL << IRQ_PEND_MCHK_EX)) 538 539 struct kvm_s390_interrupt_info { 540 struct list_head list; 541 u64 type; 542 union { 543 struct kvm_s390_io_info io; 544 struct kvm_s390_ext_info ext; 545 struct kvm_s390_pgm_info pgm; 546 struct kvm_s390_emerg_info emerg; 547 struct kvm_s390_extcall_info extcall; 548 struct kvm_s390_prefix_info prefix; 549 struct kvm_s390_stop_info stop; 550 struct kvm_s390_mchk_info mchk; 551 }; 552 }; 553 554 struct kvm_s390_irq_payload { 555 struct kvm_s390_io_info io; 556 struct kvm_s390_ext_info ext; 557 struct kvm_s390_pgm_info pgm; 558 struct kvm_s390_emerg_info emerg; 559 struct kvm_s390_extcall_info extcall; 560 struct kvm_s390_prefix_info prefix; 561 struct kvm_s390_stop_info stop; 562 struct kvm_s390_mchk_info mchk; 563 }; 564 565 struct kvm_s390_local_interrupt { 566 spinlock_t lock; 567 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS); 568 struct kvm_s390_irq_payload irq; 569 unsigned long pending_irqs; 570 }; 571 572 #define FIRQ_LIST_IO_ISC_0 0 573 #define FIRQ_LIST_IO_ISC_1 1 574 #define FIRQ_LIST_IO_ISC_2 2 575 #define FIRQ_LIST_IO_ISC_3 3 576 #define FIRQ_LIST_IO_ISC_4 4 577 #define FIRQ_LIST_IO_ISC_5 5 578 #define FIRQ_LIST_IO_ISC_6 6 579 #define FIRQ_LIST_IO_ISC_7 7 580 #define FIRQ_LIST_PFAULT 8 581 #define FIRQ_LIST_VIRTIO 9 582 #define FIRQ_LIST_COUNT 10 583 #define FIRQ_CNTR_IO 0 584 #define FIRQ_CNTR_SERVICE 1 585 #define FIRQ_CNTR_VIRTIO 2 586 #define FIRQ_CNTR_PFAULT 3 587 #define FIRQ_MAX_COUNT 4 588 589 /* mask the AIS mode for a given ISC */ 590 #define AIS_MODE_MASK(isc) (0x80 >> isc) 591 592 #define KVM_S390_AIS_MODE_ALL 0 593 #define KVM_S390_AIS_MODE_SINGLE 1 594 595 struct kvm_s390_float_interrupt { 596 unsigned long pending_irqs; 597 spinlock_t lock; 598 struct list_head lists[FIRQ_LIST_COUNT]; 599 int counters[FIRQ_MAX_COUNT]; 600 struct kvm_s390_mchk_info mchk; 601 struct kvm_s390_ext_info srv_signal; 602 int next_rr_cpu; 603 struct mutex ais_lock; 604 u8 simm; 605 u8 nimm; 606 }; 607 608 struct kvm_hw_wp_info_arch { 609 unsigned long addr; 610 unsigned long phys_addr; 611 int len; 612 char *old_data; 613 }; 614 615 struct kvm_hw_bp_info_arch { 616 unsigned long addr; 617 int len; 618 }; 619 620 /* 621 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 622 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 623 * arch/s390/include/uapi/asm/kvm.h 624 */ 625 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 626 627 #define guestdbg_enabled(vcpu) \ 628 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 629 #define guestdbg_sstep_enabled(vcpu) \ 630 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 631 #define guestdbg_hw_bp_enabled(vcpu) \ 632 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 633 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 634 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 635 636 struct kvm_guestdbg_info_arch { 637 unsigned long cr0; 638 unsigned long cr9; 639 unsigned long cr10; 640 unsigned long cr11; 641 struct kvm_hw_bp_info_arch *hw_bp_info; 642 struct kvm_hw_wp_info_arch *hw_wp_info; 643 int nr_hw_bp; 644 int nr_hw_wp; 645 unsigned long last_bp; 646 }; 647 648 struct kvm_vcpu_arch { 649 struct kvm_s390_sie_block *sie_block; 650 /* if vsie is active, currently executed shadow sie control block */ 651 struct kvm_s390_sie_block *vsie_block; 652 unsigned int host_acrs[NUM_ACRS]; 653 struct gs_cb *host_gscb; 654 struct fpu host_fpregs; 655 struct kvm_s390_local_interrupt local_int; 656 struct hrtimer ckc_timer; 657 struct kvm_s390_pgm_info pgm; 658 struct gmap *gmap; 659 /* backup location for the currently enabled gmap when scheduled out */ 660 struct gmap *enabled_gmap; 661 struct kvm_guestdbg_info_arch guestdbg; 662 unsigned long pfault_token; 663 unsigned long pfault_select; 664 unsigned long pfault_compare; 665 bool cputm_enabled; 666 /* 667 * The seqcount protects updates to cputm_start and sie_block.cputm, 668 * this way we can have non-blocking reads with consistent values. 669 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these 670 * values and to start/stop/enable/disable cpu timer accounting. 671 */ 672 seqcount_t cputm_seqcount; 673 __u64 cputm_start; 674 bool gs_enabled; 675 bool skey_enabled; 676 }; 677 678 struct kvm_vm_stat { 679 u64 inject_io; 680 u64 inject_float_mchk; 681 u64 inject_pfault_done; 682 u64 inject_service_signal; 683 u64 inject_virtio; 684 u64 remote_tlb_flush; 685 }; 686 687 struct kvm_arch_memory_slot { 688 }; 689 690 struct s390_map_info { 691 struct list_head list; 692 __u64 guest_addr; 693 __u64 addr; 694 struct page *page; 695 }; 696 697 struct s390_io_adapter { 698 unsigned int id; 699 int isc; 700 bool maskable; 701 bool masked; 702 bool swap; 703 bool suppressible; 704 struct rw_semaphore maps_lock; 705 struct list_head maps; 706 atomic_t nr_maps; 707 }; 708 709 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 710 #define MAX_S390_ADAPTER_MAPS 256 711 712 /* maximum size of facilities and facility mask is 2k bytes */ 713 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11) 714 #define S390_ARCH_FAC_LIST_SIZE_U64 \ 715 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64)) 716 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE 717 #define S390_ARCH_FAC_MASK_SIZE_U64 \ 718 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) 719 720 struct kvm_s390_cpu_model { 721 /* facility mask supported by kvm & hosting machine */ 722 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64]; 723 struct kvm_s390_vm_cpu_subfunc subfuncs; 724 /* facility list requested by guest (in dma page) */ 725 __u64 *fac_list; 726 u64 cpuid; 727 unsigned short ibc; 728 }; 729 730 struct kvm_s390_module_hook { 731 int (*hook)(struct kvm_vcpu *vcpu); 732 struct module *owner; 733 }; 734 735 struct kvm_s390_crypto { 736 struct kvm_s390_crypto_cb *crycb; 737 struct kvm_s390_module_hook *pqap_hook; 738 __u32 crycbd; 739 __u8 aes_kw; 740 __u8 dea_kw; 741 __u8 apie; 742 }; 743 744 #define APCB0_MASK_SIZE 1 745 struct kvm_s390_apcb0 { 746 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */ 747 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */ 748 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */ 749 __u64 reserved18; /* 0x0018 */ 750 }; 751 752 #define APCB1_MASK_SIZE 4 753 struct kvm_s390_apcb1 { 754 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */ 755 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */ 756 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */ 757 __u64 reserved60[4]; /* 0x0060 */ 758 }; 759 760 struct kvm_s390_crypto_cb { 761 struct kvm_s390_apcb0 apcb0; /* 0x0000 */ 762 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */ 763 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */ 764 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */ 765 struct kvm_s390_apcb1 apcb1; /* 0x0080 */ 766 }; 767 768 struct kvm_s390_gisa { 769 union { 770 struct { /* common to all formats */ 771 u32 next_alert; 772 u8 ipm; 773 u8 reserved01[2]; 774 u8 iam; 775 }; 776 struct { /* format 0 */ 777 u32 next_alert; 778 u8 ipm; 779 u8 reserved01; 780 u8 : 6; 781 u8 g : 1; 782 u8 c : 1; 783 u8 iam; 784 u8 reserved02[4]; 785 u32 airq_count; 786 } g0; 787 struct { /* format 1 */ 788 u32 next_alert; 789 u8 ipm; 790 u8 simm; 791 u8 nimm; 792 u8 iam; 793 u8 aism[8]; 794 u8 : 6; 795 u8 g : 1; 796 u8 c : 1; 797 u8 reserved03[11]; 798 u32 airq_count; 799 } g1; 800 struct { 801 u64 word[4]; 802 } u64; 803 }; 804 }; 805 806 struct kvm_s390_gib { 807 u32 alert_list_origin; 808 u32 reserved01; 809 u8:5; 810 u8 nisc:3; 811 u8 reserved03[3]; 812 u32 reserved04[5]; 813 }; 814 815 /* 816 * sie_page2 has to be allocated as DMA because fac_list, crycb and 817 * gisa need 31bit addresses in the sie control block. 818 */ 819 struct sie_page2 { 820 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ 821 struct kvm_s390_crypto_cb crycb; /* 0x0800 */ 822 struct kvm_s390_gisa gisa; /* 0x0900 */ 823 struct kvm *kvm; /* 0x0920 */ 824 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */ 825 }; 826 827 struct kvm_s390_vsie { 828 struct mutex mutex; 829 struct radix_tree_root addr_to_page; 830 int page_count; 831 int next; 832 struct page *pages[KVM_MAX_VCPUS]; 833 }; 834 835 struct kvm_s390_gisa_iam { 836 u8 mask; 837 spinlock_t ref_lock; 838 u32 ref_count[MAX_ISC + 1]; 839 }; 840 841 struct kvm_s390_gisa_interrupt { 842 struct kvm_s390_gisa *origin; 843 struct kvm_s390_gisa_iam alert; 844 struct hrtimer timer; 845 u64 expires; 846 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS); 847 }; 848 849 struct kvm_arch{ 850 void *sca; 851 int use_esca; 852 rwlock_t sca_lock; 853 debug_info_t *dbf; 854 struct kvm_s390_float_interrupt float_int; 855 struct kvm_device *flic; 856 struct gmap *gmap; 857 unsigned long mem_limit; 858 int css_support; 859 int use_irqchip; 860 int use_cmma; 861 int use_pfmfi; 862 int use_skf; 863 int user_cpu_state_ctrl; 864 int user_sigp; 865 int user_stsi; 866 int user_instr0; 867 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 868 wait_queue_head_t ipte_wq; 869 int ipte_lock_count; 870 struct mutex ipte_mutex; 871 spinlock_t start_stop_lock; 872 struct sie_page2 *sie_page2; 873 struct kvm_s390_cpu_model model; 874 struct kvm_s390_crypto crypto; 875 struct kvm_s390_vsie vsie; 876 u8 epdx; 877 u64 epoch; 878 int migration_mode; 879 atomic64_t cmma_dirty_pages; 880 /* subset of available cpu features enabled by user space */ 881 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS); 882 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS); 883 struct kvm_s390_gisa_interrupt gisa_int; 884 }; 885 886 #define KVM_HVA_ERR_BAD (-1UL) 887 #define KVM_HVA_ERR_RO_BAD (-2UL) 888 889 static inline bool kvm_is_error_hva(unsigned long addr) 890 { 891 return IS_ERR_VALUE(addr); 892 } 893 894 #define ASYNC_PF_PER_VCPU 64 895 struct kvm_arch_async_pf { 896 unsigned long pfault_token; 897 }; 898 899 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 900 901 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 902 struct kvm_async_pf *work); 903 904 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 905 struct kvm_async_pf *work); 906 907 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 908 struct kvm_async_pf *work); 909 910 void kvm_arch_crypto_clear_masks(struct kvm *kvm); 911 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm, 912 unsigned long *aqm, unsigned long *adm); 913 914 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 915 extern char sie_exit; 916 917 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc); 918 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc); 919 920 static inline void kvm_arch_hardware_disable(void) {} 921 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 922 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 923 static inline void kvm_arch_free_memslot(struct kvm *kvm, 924 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {} 925 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} 926 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 927 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 928 struct kvm_memory_slot *slot) {} 929 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} 930 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} 931 932 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu); 933 934 #endif 935