target/s390x/cpu.h

   1 /*
   2  * S/390 virtual CPU header
   3  *
   4  *  Copyright (c) 2009 Ulrich Hecht
   5  *  Copyright IBM Corp. 2012, 2018
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #ifndef S390X_CPU_H
  22 #define S390X_CPU_H
  23
  24 #include "qemu-common.h"
  25 #include "cpu-qom.h"
  26 #include "cpu_models.h"
  27
  28 #define TARGET_LONG_BITS 64
  29
  30 #define ELF_MACHINE_UNAME "S390X"
  31
  32 #define CPUArchState struct CPUS390XState
  33
  34 #include "exec/cpu-defs.h"
  35
  36 /* The z/Architecture has a strong memory model with some store-after-load re-ordering */
  37 #define TCG_GUEST_DEFAULT_MO      (TCG_MO_ALL & ~TCG_MO_ST_LD)
  38
  39 #define TARGET_PAGE_BITS 12
  40
  41 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  42 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  43
  44 #include "exec/cpu-all.h"
  45
  46 #define NB_MMU_MODES 4
  47 #define TARGET_INSN_START_EXTRA_WORDS 1
  48
  49 #define MMU_MODE0_SUFFIX _primary
  50 #define MMU_MODE1_SUFFIX _secondary
  51 #define MMU_MODE2_SUFFIX _home
  52 #define MMU_MODE3_SUFFIX _real
  53
  54 #define MMU_USER_IDX 0
  55
  56 #define S390_MAX_CPUS 248
  57
  58 typedef struct PSW {
  59     uint64_t mask;
  60     uint64_t addr;
  61 } PSW;
  62
  63 struct CPUS390XState {
  64     uint64_t regs[16];     /* GP registers */
  65     /*
  66      * The floating point registers are part of the vector registers.
  67      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  68      */
  69     CPU_DoubleU vregs[32][2];  /* vector registers */
  70     uint32_t aregs[16];    /* access registers */
  71     uint8_t riccb[64];     /* runtime instrumentation control */
  72     uint64_t gscb[4];      /* guarded storage control */
  73     uint64_t etoken;       /* etoken */
  74     uint64_t etoken_extension; /* etoken extension */
  75
  76     /* Fields up to this point are not cleared by initial CPU reset */
  77     struct {} start_initial_reset_fields;
  78
  79     uint32_t fpc;          /* floating-point control register */
  80     uint32_t cc_op;
  81     bool bpbc;             /* branch prediction blocking */
  82
  83     float_status fpu_status; /* passed to softfloat lib */
  84
  85     /* The low part of a 128-bit return, or remainder of a divide.  */
  86     uint64_t retxl;
  87
  88     PSW psw;
  89
  90     S390CrashReason crash_reason;
  91
  92     uint64_t cc_src;
  93     uint64_t cc_dst;
  94     uint64_t cc_vr;
  95
  96     uint64_t ex_value;
  97
  98     uint64_t __excp_addr;
  99     uint64_t psa;
 100
 101     uint32_t int_pgm_code;
 102     uint32_t int_pgm_ilen;
 103
 104     uint32_t int_svc_code;
 105     uint32_t int_svc_ilen;
 106
 107     uint64_t per_address;
 108     uint16_t per_perc_atmid;
 109
 110     uint64_t cregs[16]; /* control registers */
 111
 112     int pending_int;
 113     uint16_t external_call_addr;
 114     DECLARE_BITMAP(emergency_signals, S390_MAX_CPUS);
 115
 116     uint64_t ckc;
 117     uint64_t cputm;
 118     uint32_t todpr;
 119
 120     uint64_t pfault_token;
 121     uint64_t pfault_compare;
 122     uint64_t pfault_select;
 123
 124     uint64_t gbea;
 125     uint64_t pp;
 126
 127     /* Fields up to this point are cleared by a CPU reset */
 128     struct {} end_reset_fields;
 129
 130     CPU_COMMON
 131
 132 #if !defined(CONFIG_USER_ONLY)
 133     uint32_t core_id; /* PoP "CPU address", same as cpu_index */
 134     uint64_t cpuid;
 135 #endif
 136
 137     QEMUTimer *tod_timer;
 138
 139     QEMUTimer *cpu_timer;
 140
 141     /*
 142      * The cpu state represents the logical state of a cpu. In contrast to other
 143      * architectures, there is a difference between a halt and a stop on s390.
 144      * If all cpus are either stopped (including check stop) or in the disabled
 145      * wait state, the vm can be shut down.
 146      * The acceptable cpu_state values are defined in the CpuInfoS390State
 147      * enum.
 148      */
 149     uint8_t cpu_state;
 150
 151     /* currently processed sigp order */
 152     uint8_t sigp_order;
 153
 154 };
 155
 156 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 157 {
 158     return &cs->vregs[nr][0];
 159 }
 160
 161 /**
 162  * S390CPU:
 163  * @env: #CPUS390XState.
 164  *
 165  * An S/390 CPU.
 166  */
 167 struct S390CPU {
 168     /*< private >*/
 169     CPUState parent_obj;
 170     /*< public >*/
 171
 172     CPUS390XState env;
 173     S390CPUModel *model;
 174     /* needed for live migration */
 175     void *irqstate;
 176     uint32_t irqstate_saved_size;
 177 };
 178
 179 static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
 180 {
 181     return container_of(env, S390CPU, env);
 182 }
 183
 184 #define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
 185
 186 #define ENV_OFFSET offsetof(S390CPU, env)
 187
 188 #ifndef CONFIG_USER_ONLY
 189 extern const struct VMStateDescription vmstate_s390_cpu;
 190 #endif
 191
 192 /* distinguish between 24 bit and 31 bit addressing */
 193 #define HIGH_ORDER_BIT 0x80000000
 194
 195 /* Interrupt Codes */
 196 /* Program Interrupts */
 197 #define PGM_OPERATION                   0x0001
 198 #define PGM_PRIVILEGED                  0x0002
 199 #define PGM_EXECUTE                     0x0003
 200 #define PGM_PROTECTION                  0x0004
 201 #define PGM_ADDRESSING                  0x0005
 202 #define PGM_SPECIFICATION               0x0006
 203 #define PGM_DATA                        0x0007
 204 #define PGM_FIXPT_OVERFLOW              0x0008
 205 #define PGM_FIXPT_DIVIDE                0x0009
 206 #define PGM_DEC_OVERFLOW                0x000a
 207 #define PGM_DEC_DIVIDE                  0x000b
 208 #define PGM_HFP_EXP_OVERFLOW            0x000c
 209 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 210 #define PGM_HFP_SIGNIFICANCE            0x000e
 211 #define PGM_HFP_DIVIDE                  0x000f
 212 #define PGM_SEGMENT_TRANS               0x0010
 213 #define PGM_PAGE_TRANS                  0x0011
 214 #define PGM_TRANS_SPEC                  0x0012
 215 #define PGM_SPECIAL_OP                  0x0013
 216 #define PGM_OPERAND                     0x0015
 217 #define PGM_TRACE_TABLE                 0x0016
 218 #define PGM_SPACE_SWITCH                0x001c
 219 #define PGM_HFP_SQRT                    0x001d
 220 #define PGM_PC_TRANS_SPEC               0x001f
 221 #define PGM_AFX_TRANS                   0x0020
 222 #define PGM_ASX_TRANS                   0x0021
 223 #define PGM_LX_TRANS                    0x0022
 224 #define PGM_EX_TRANS                    0x0023
 225 #define PGM_PRIM_AUTH                   0x0024
 226 #define PGM_SEC_AUTH                    0x0025
 227 #define PGM_ALET_SPEC                   0x0028
 228 #define PGM_ALEN_SPEC                   0x0029
 229 #define PGM_ALE_SEQ                     0x002a
 230 #define PGM_ASTE_VALID                  0x002b
 231 #define PGM_ASTE_SEQ                    0x002c
 232 #define PGM_EXT_AUTH                    0x002d
 233 #define PGM_STACK_FULL                  0x0030
 234 #define PGM_STACK_EMPTY                 0x0031
 235 #define PGM_STACK_SPEC                  0x0032
 236 #define PGM_STACK_TYPE                  0x0033
 237 #define PGM_STACK_OP                    0x0034
 238 #define PGM_ASCE_TYPE                   0x0038
 239 #define PGM_REG_FIRST_TRANS             0x0039
 240 #define PGM_REG_SEC_TRANS               0x003a
 241 #define PGM_REG_THIRD_TRANS             0x003b
 242 #define PGM_MONITOR                     0x0040
 243 #define PGM_PER                         0x0080
 244 #define PGM_CRYPTO                      0x0119
 245
 246 /* External Interrupts */
 247 #define EXT_INTERRUPT_KEY               0x0040
 248 #define EXT_CLOCK_COMP                  0x1004
 249 #define EXT_CPU_TIMER                   0x1005
 250 #define EXT_MALFUNCTION                 0x1200
 251 #define EXT_EMERGENCY                   0x1201
 252 #define EXT_EXTERNAL_CALL               0x1202
 253 #define EXT_ETR                         0x1406
 254 #define EXT_SERVICE                     0x2401
 255 #define EXT_VIRTIO                      0x2603
 256
 257 /* PSW defines */
 258 #undef PSW_MASK_PER
 259 #undef PSW_MASK_UNUSED_2
 260 #undef PSW_MASK_UNUSED_3
 261 #undef PSW_MASK_DAT
 262 #undef PSW_MASK_IO
 263 #undef PSW_MASK_EXT
 264 #undef PSW_MASK_KEY
 265 #undef PSW_SHIFT_KEY
 266 #undef PSW_MASK_MCHECK
 267 #undef PSW_MASK_WAIT
 268 #undef PSW_MASK_PSTATE
 269 #undef PSW_MASK_ASC
 270 #undef PSW_SHIFT_ASC
 271 #undef PSW_MASK_CC
 272 #undef PSW_MASK_PM
 273 #undef PSW_SHIFT_MASK_PM
 274 #undef PSW_MASK_64
 275 #undef PSW_MASK_32
 276 #undef PSW_MASK_ESA_ADDR
 277
 278 #define PSW_MASK_PER            0x4000000000000000ULL
 279 #define PSW_MASK_UNUSED_2       0x2000000000000000ULL
 280 #define PSW_MASK_UNUSED_3       0x1000000000000000ULL
 281 #define PSW_MASK_DAT            0x0400000000000000ULL
 282 #define PSW_MASK_IO             0x0200000000000000ULL
 283 #define PSW_MASK_EXT            0x0100000000000000ULL
 284 #define PSW_MASK_KEY            0x00F0000000000000ULL
 285 #define PSW_SHIFT_KEY           52
 286 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 287 #define PSW_MASK_WAIT           0x0002000000000000ULL
 288 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 289 #define PSW_MASK_ASC            0x0000C00000000000ULL
 290 #define PSW_SHIFT_ASC           46
 291 #define PSW_MASK_CC             0x0000300000000000ULL
 292 #define PSW_MASK_PM             0x00000F0000000000ULL
 293 #define PSW_SHIFT_MASK_PM       40
 294 #define PSW_MASK_64             0x0000000100000000ULL
 295 #define PSW_MASK_32             0x0000000080000000ULL
 296 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 297
 298 #undef PSW_ASC_PRIMARY
 299 #undef PSW_ASC_ACCREG
 300 #undef PSW_ASC_SECONDARY
 301 #undef PSW_ASC_HOME
 302
 303 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 304 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 305 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 306 #define PSW_ASC_HOME            0x0000C00000000000ULL
 307
 308 /* the address space values shifted */
 309 #define AS_PRIMARY              0
 310 #define AS_ACCREG               1
 311 #define AS_SECONDARY            2
 312 #define AS_HOME                 3
 313
 314 /* tb flags */
 315
 316 #define FLAG_MASK_PSW_SHIFT     31
 317 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 318 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> FLAG_MASK_PSW_SHIFT)
 319 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 320 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 321 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 322 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 323 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_DAT | FLAG_MASK_PSTATE \
 324                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 325
 326 /* we'll use some unused PSW positions to store CR flags in tb flags */
 327 #define FLAG_MASK_AFP           (PSW_MASK_UNUSED_2 >> FLAG_MASK_PSW_SHIFT)
 328 #define FLAG_MASK_VECTOR        (PSW_MASK_UNUSED_3 >> FLAG_MASK_PSW_SHIFT)
 329
 330 /* Control register 0 bits */
 331 #define CR0_LOWPROT             0x0000000010000000ULL
 332 #define CR0_SECONDARY           0x0000000004000000ULL
 333 #define CR0_EDAT                0x0000000000800000ULL
 334 #define CR0_AFP                 0x0000000000040000ULL
 335 #define CR0_VECTOR              0x0000000000020000ULL
 336 #define CR0_EMERGENCY_SIGNAL_SC 0x0000000000004000ULL
 337 #define CR0_EXTERNAL_CALL_SC    0x0000000000002000ULL
 338 #define CR0_CKC_SC              0x0000000000000800ULL
 339 #define CR0_CPU_TIMER_SC        0x0000000000000400ULL
 340 #define CR0_SERVICE_SC          0x0000000000000200ULL
 341
 342 /* Control register 14 bits */
 343 #define CR14_CHANNEL_REPORT_SC  0x0000000010000000ULL
 344
 345 /* MMU */
 346 #define MMU_PRIMARY_IDX         0
 347 #define MMU_SECONDARY_IDX       1
 348 #define MMU_HOME_IDX            2
 349 #define MMU_REAL_IDX            3
 350
 351 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 352 {
 353     if (!(env->psw.mask & PSW_MASK_DAT)) {
 354         return MMU_REAL_IDX;
 355     }
 356
 357     switch (env->psw.mask & PSW_MASK_ASC) {
 358     case PSW_ASC_PRIMARY:
 359         return MMU_PRIMARY_IDX;
 360     case PSW_ASC_SECONDARY:
 361         return MMU_SECONDARY_IDX;
 362     case PSW_ASC_HOME:
 363         return MMU_HOME_IDX;
 364     case PSW_ASC_ACCREG:
 365         /* Fallthrough: access register mode is not yet supported */
 366     default:
 367         abort();
 368     }
 369 }
 370
 371 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 372                                         target_ulong *cs_base, uint32_t *flags)
 373 {
 374     *pc = env->psw.addr;
 375     *cs_base = env->ex_value;
 376     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 377     if (env->cregs[0] & CR0_AFP) {
 378         *flags |= FLAG_MASK_AFP;
 379     }
 380     if (env->cregs[0] & CR0_VECTOR) {
 381         *flags |= FLAG_MASK_VECTOR;
 382     }
 383 }
 384
 385 /* PER bits from control register 9 */
 386 #define PER_CR9_EVENT_BRANCH           0x80000000
 387 #define PER_CR9_EVENT_IFETCH           0x40000000
 388 #define PER_CR9_EVENT_STORE            0x20000000
 389 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 390 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 391 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 392 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 393
 394 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 395 #define PER_CODE_EVENT_BRANCH          0x8000
 396 #define PER_CODE_EVENT_IFETCH          0x4000
 397 #define PER_CODE_EVENT_STORE           0x2000
 398 #define PER_CODE_EVENT_STORE_REAL      0x0800
 399 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 400
 401 #define EXCP_EXT 1 /* external interrupt */
 402 #define EXCP_SVC 2 /* supervisor call (syscall) */
 403 #define EXCP_PGM 3 /* program interruption */
 404 #define EXCP_RESTART 4 /* restart interrupt */
 405 #define EXCP_STOP 5 /* stop interrupt */
 406 #define EXCP_IO  7 /* I/O interrupt */
 407 #define EXCP_MCHK 8 /* machine check */
 408
 409 #define INTERRUPT_EXT_CPU_TIMER          (1 << 3)
 410 #define INTERRUPT_EXT_CLOCK_COMPARATOR   (1 << 4)
 411 #define INTERRUPT_EXTERNAL_CALL          (1 << 5)
 412 #define INTERRUPT_EMERGENCY_SIGNAL       (1 << 6)
 413 #define INTERRUPT_RESTART                (1 << 7)
 414 #define INTERRUPT_STOP                   (1 << 8)
 415
 416 /* Program Status Word.  */
 417 #define S390_PSWM_REGNUM 0
 418 #define S390_PSWA_REGNUM 1
 419 /* General Purpose Registers.  */
 420 #define S390_R0_REGNUM 2
 421 #define S390_R1_REGNUM 3
 422 #define S390_R2_REGNUM 4
 423 #define S390_R3_REGNUM 5
 424 #define S390_R4_REGNUM 6
 425 #define S390_R5_REGNUM 7
 426 #define S390_R6_REGNUM 8
 427 #define S390_R7_REGNUM 9
 428 #define S390_R8_REGNUM 10
 429 #define S390_R9_REGNUM 11
 430 #define S390_R10_REGNUM 12
 431 #define S390_R11_REGNUM 13
 432 #define S390_R12_REGNUM 14
 433 #define S390_R13_REGNUM 15
 434 #define S390_R14_REGNUM 16
 435 #define S390_R15_REGNUM 17
 436 /* Total Core Registers. */
 437 #define S390_NUM_CORE_REGS 18
 438
 439 static inline void setcc(S390CPU *cpu, uint64_t cc)
 440 {
 441     CPUS390XState *env = &cpu->env;
 442
 443     env->psw.mask &= ~(3ull << 44);
 444     env->psw.mask |= (cc & 3) << 44;
 445     env->cc_op = cc;
 446 }
 447
 448 /* STSI */
 449 #define STSI_R0_FC_MASK         0x00000000f0000000ULL
 450 #define STSI_R0_FC_CURRENT      0x0000000000000000ULL
 451 #define STSI_R0_FC_LEVEL_1      0x0000000010000000ULL
 452 #define STSI_R0_FC_LEVEL_2      0x0000000020000000ULL
 453 #define STSI_R0_FC_LEVEL_3      0x0000000030000000ULL
 454 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 455 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 456 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 457 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 458
 459 /* Basic Machine Configuration */
 460 typedef struct SysIB_111 {
 461     uint8_t  res1[32];
 462     uint8_t  manuf[16];
 463     uint8_t  type[4];
 464     uint8_t  res2[12];
 465     uint8_t  model[16];
 466     uint8_t  sequence[16];
 467     uint8_t  plant[4];
 468     uint8_t  res3[3996];
 469 } SysIB_111;
 470 QEMU_BUILD_BUG_ON(sizeof(SysIB_111) != 4096);
 471
 472 /* Basic Machine CPU */
 473 typedef struct SysIB_121 {
 474     uint8_t  res1[80];
 475     uint8_t  sequence[16];
 476     uint8_t  plant[4];
 477     uint8_t  res2[2];
 478     uint16_t cpu_addr;
 479     uint8_t  res3[3992];
 480 } SysIB_121;
 481 QEMU_BUILD_BUG_ON(sizeof(SysIB_121) != 4096);
 482
 483 /* Basic Machine CPUs */
 484 typedef struct SysIB_122 {
 485     uint8_t res1[32];
 486     uint32_t capability;
 487     uint16_t total_cpus;
 488     uint16_t conf_cpus;
 489     uint16_t standby_cpus;
 490     uint16_t reserved_cpus;
 491     uint16_t adjustments[2026];
 492 } SysIB_122;
 493 QEMU_BUILD_BUG_ON(sizeof(SysIB_122) != 4096);
 494
 495 /* LPAR CPU */
 496 typedef struct SysIB_221 {
 497     uint8_t  res1[80];
 498     uint8_t  sequence[16];
 499     uint8_t  plant[4];
 500     uint16_t cpu_id;
 501     uint16_t cpu_addr;
 502     uint8_t  res3[3992];
 503 } SysIB_221;
 504 QEMU_BUILD_BUG_ON(sizeof(SysIB_221) != 4096);
 505
 506 /* LPAR CPUs */
 507 typedef struct SysIB_222 {
 508     uint8_t  res1[32];
 509     uint16_t lpar_num;
 510     uint8_t  res2;
 511     uint8_t  lcpuc;
 512     uint16_t total_cpus;
 513     uint16_t conf_cpus;
 514     uint16_t standby_cpus;
 515     uint16_t reserved_cpus;
 516     uint8_t  name[8];
 517     uint32_t caf;
 518     uint8_t  res3[16];
 519     uint16_t dedicated_cpus;
 520     uint16_t shared_cpus;
 521     uint8_t  res4[4020];
 522 } SysIB_222;
 523 QEMU_BUILD_BUG_ON(sizeof(SysIB_222) != 4096);
 524
 525 /* VM CPUs */
 526 typedef struct SysIB_322 {
 527     uint8_t  res1[31];
 528     uint8_t  count;
 529     struct {
 530         uint8_t  res2[4];
 531         uint16_t total_cpus;
 532         uint16_t conf_cpus;
 533         uint16_t standby_cpus;
 534         uint16_t reserved_cpus;
 535         uint8_t  name[8];
 536         uint32_t caf;
 537         uint8_t  cpi[16];
 538         uint8_t res5[3];
 539         uint8_t ext_name_encoding;
 540         uint32_t res3;
 541         uint8_t uuid[16];
 542     } vm[8];
 543     uint8_t res4[1504];
 544     uint8_t ext_names[8][256];
 545 } SysIB_322;
 546 QEMU_BUILD_BUG_ON(sizeof(SysIB_322) != 4096);
 547
 548 typedef union SysIB {
 549     SysIB_111 sysib_111;
 550     SysIB_121 sysib_121;
 551     SysIB_122 sysib_122;
 552     SysIB_221 sysib_221;
 553     SysIB_222 sysib_222;
 554     SysIB_322 sysib_322;
 555 } SysIB;
 556 QEMU_BUILD_BUG_ON(sizeof(SysIB) != 4096);
 557
 558 /* MMU defines */
 559 #define ASCE_ORIGIN           (~0xfffULL) /* segment table origin             */
 560 #define ASCE_SUBSPACE         0x200       /* subspace group control           */
 561 #define ASCE_PRIVATE_SPACE    0x100       /* private space control            */
 562 #define ASCE_ALT_EVENT        0x80        /* storage alteration event control */
 563 #define ASCE_SPACE_SWITCH     0x40        /* space switch event               */
 564 #define ASCE_REAL_SPACE       0x20        /* real space control               */
 565 #define ASCE_TYPE_MASK        0x0c        /* asce table type mask             */
 566 #define ASCE_TYPE_REGION1     0x0c        /* region first table type          */
 567 #define ASCE_TYPE_REGION2     0x08        /* region second table type         */
 568 #define ASCE_TYPE_REGION3     0x04        /* region third table type          */
 569 #define ASCE_TYPE_SEGMENT     0x00        /* segment table type               */
 570 #define ASCE_TABLE_LENGTH     0x03        /* region table length              */
 571
 572 #define REGION_ENTRY_ORIGIN   (~0xfffULL) /* region/segment table origin    */
 573 #define REGION_ENTRY_RO       0x200       /* region/segment protection bit  */
 574 #define REGION_ENTRY_TF       0xc0        /* region/segment table offset    */
 575 #define REGION_ENTRY_INV      0x20        /* invalid region table entry     */
 576 #define REGION_ENTRY_TYPE_MASK 0x0c       /* region/segment table type mask */
 577 #define REGION_ENTRY_TYPE_R1  0x0c        /* region first table type        */
 578 #define REGION_ENTRY_TYPE_R2  0x08        /* region second table type       */
 579 #define REGION_ENTRY_TYPE_R3  0x04        /* region third table type        */
 580 #define REGION_ENTRY_LENGTH   0x03        /* region third length            */
 581
 582 #define SEGMENT_ENTRY_ORIGIN  (~0x7ffULL) /* segment table origin        */
 583 #define SEGMENT_ENTRY_FC      0x400       /* format control              */
 584 #define SEGMENT_ENTRY_RO      0x200       /* page protection bit         */
 585 #define SEGMENT_ENTRY_INV     0x20        /* invalid segment table entry */
 586
 587 #define VADDR_PX              0xff000     /* page index bits   */
 588
 589 #define PAGE_RO               0x200       /* HW read-only bit  */
 590 #define PAGE_INVALID          0x400       /* HW invalid bit    */
 591 #define PAGE_RES0             0x800       /* bit must be zero  */
 592
 593 #define SK_C                    (0x1 << 1)
 594 #define SK_R                    (0x1 << 2)
 595 #define SK_F                    (0x1 << 3)
 596 #define SK_ACC_MASK             (0xf << 4)
 597
 598 /* SIGP order codes */
 599 #define SIGP_SENSE             0x01
 600 #define SIGP_EXTERNAL_CALL     0x02
 601 #define SIGP_EMERGENCY         0x03
 602 #define SIGP_START             0x04
 603 #define SIGP_STOP              0x05
 604 #define SIGP_RESTART           0x06
 605 #define SIGP_STOP_STORE_STATUS 0x09
 606 #define SIGP_INITIAL_CPU_RESET 0x0b
 607 #define SIGP_CPU_RESET         0x0c
 608 #define SIGP_SET_PREFIX        0x0d
 609 #define SIGP_STORE_STATUS_ADDR 0x0e
 610 #define SIGP_SET_ARCH          0x12
 611 #define SIGP_COND_EMERGENCY    0x13
 612 #define SIGP_SENSE_RUNNING     0x15
 613 #define SIGP_STORE_ADTL_STATUS 0x17
 614
 615 /* SIGP condition codes */
 616 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
 617 #define SIGP_CC_STATUS_STORED       1
 618 #define SIGP_CC_BUSY                2
 619 #define SIGP_CC_NOT_OPERATIONAL     3
 620
 621 /* SIGP status bits */
 622 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 623 #define SIGP_STAT_NOT_RUNNING       0x00000400UL
 624 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 625 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 626 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 627 #define SIGP_STAT_STOPPED           0x00000040UL
 628 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 629 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 630 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 631 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 632 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 633
 634 /* SIGP SET ARCHITECTURE modes */
 635 #define SIGP_MODE_ESA_S390 0
 636 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
 637 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
 638
 639 /* SIGP order code mask corresponding to bit positions 56-63 */
 640 #define SIGP_ORDER_MASK 0x000000ff
 641
 642 /* machine check interruption code */
 643
 644 /* subclasses */
 645 #define MCIC_SC_SD 0x8000000000000000ULL
 646 #define MCIC_SC_PD 0x4000000000000000ULL
 647 #define MCIC_SC_SR 0x2000000000000000ULL
 648 #define MCIC_SC_CD 0x0800000000000000ULL
 649 #define MCIC_SC_ED 0x0400000000000000ULL
 650 #define MCIC_SC_DG 0x0100000000000000ULL
 651 #define MCIC_SC_W  0x0080000000000000ULL
 652 #define MCIC_SC_CP 0x0040000000000000ULL
 653 #define MCIC_SC_SP 0x0020000000000000ULL
 654 #define MCIC_SC_CK 0x0010000000000000ULL
 655
 656 /* subclass modifiers */
 657 #define MCIC_SCM_B  0x0002000000000000ULL
 658 #define MCIC_SCM_DA 0x0000000020000000ULL
 659 #define MCIC_SCM_AP 0x0000000000080000ULL
 660
 661 /* storage errors */
 662 #define MCIC_SE_SE 0x0000800000000000ULL
 663 #define MCIC_SE_SC 0x0000400000000000ULL
 664 #define MCIC_SE_KE 0x0000200000000000ULL
 665 #define MCIC_SE_DS 0x0000100000000000ULL
 666 #define MCIC_SE_IE 0x0000000080000000ULL
 667
 668 /* validity bits */
 669 #define MCIC_VB_WP 0x0000080000000000ULL
 670 #define MCIC_VB_MS 0x0000040000000000ULL
 671 #define MCIC_VB_PM 0x0000020000000000ULL
 672 #define MCIC_VB_IA 0x0000010000000000ULL
 673 #define MCIC_VB_FA 0x0000008000000000ULL
 674 #define MCIC_VB_VR 0x0000004000000000ULL
 675 #define MCIC_VB_EC 0x0000002000000000ULL
 676 #define MCIC_VB_FP 0x0000001000000000ULL
 677 #define MCIC_VB_GR 0x0000000800000000ULL
 678 #define MCIC_VB_CR 0x0000000400000000ULL
 679 #define MCIC_VB_ST 0x0000000100000000ULL
 680 #define MCIC_VB_AR 0x0000000040000000ULL
 681 #define MCIC_VB_GS 0x0000000008000000ULL
 682 #define MCIC_VB_PR 0x0000000000200000ULL
 683 #define MCIC_VB_FC 0x0000000000100000ULL
 684 #define MCIC_VB_CT 0x0000000000020000ULL
 685 #define MCIC_VB_CC 0x0000000000010000ULL
 686
 687 static inline uint64_t s390_build_validity_mcic(void)
 688 {
 689     uint64_t mcic;
 690
 691     /*
 692      * Indicate all validity bits (no damage) only. Other bits have to be
 693      * added by the caller. (storage errors, subclasses and subclass modifiers)
 694      */
 695     mcic = MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
 696            MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
 697            MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
 698     if (s390_has_feat(S390_FEAT_VECTOR)) {
 699         mcic |= MCIC_VB_VR;
 700     }
 701     if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
 702         mcic |= MCIC_VB_GS;
 703     }
 704     return mcic;
 705 }
 706
 707 static inline void s390_do_cpu_full_reset(CPUState *cs, run_on_cpu_data arg)
 708 {
 709     cpu_reset(cs);
 710 }
 711
 712 static inline void s390_do_cpu_reset(CPUState *cs, run_on_cpu_data arg)
 713 {
 714     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 715
 716     scc->cpu_reset(cs);
 717 }
 718
 719 static inline void s390_do_cpu_initial_reset(CPUState *cs, run_on_cpu_data arg)
 720 {
 721     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 722
 723     scc->initial_cpu_reset(cs);
 724 }
 725
 726 static inline void s390_do_cpu_load_normal(CPUState *cs, run_on_cpu_data arg)
 727 {
 728     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 729
 730     scc->load_normal(cs);
 731 }
 732
 733
 734 /* cpu.c */
 735 void s390_crypto_reset(void);
 736 int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
 737 void s390_set_max_pagesize(uint64_t pagesize, Error **errp);
 738 void s390_cmma_reset(void);
 739 void s390_enable_css_support(S390CPU *cpu);
 740 int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
 741                                 int vq, bool assign);
 742 #ifndef CONFIG_USER_ONLY
 743 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 744 #else
 745 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 746 {
 747     return 0;
 748 }
 749 #endif /* CONFIG_USER_ONLY */
 750 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 751 {
 752     return cpu->env.cpu_state;
 753 }
 754
 755
 756 /* cpu_models.c */
 757 void s390_cpu_list(void);
 758 #define cpu_list s390_cpu_list
 759 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
 760                              const S390FeatInit feat_init);
 761
 762
 763 /* helper.c */
 764 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
 765 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
 766 #define CPU_RESOLVING_TYPE TYPE_S390_CPU
 767
 768 /* you can call this signal handler from your SIGBUS and SIGSEGV
 769    signal handlers to inform the virtual CPU of exceptions. non zero
 770    is returned if the signal was handled by the virtual CPU.  */
 771 int cpu_s390x_signal_handler(int host_signum, void *pinfo, void *puc);
 772 #define cpu_signal_handler cpu_s390x_signal_handler
 773
 774
 775 /* interrupt.c */
 776 void s390_crw_mchk(void);
 777 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 778                        uint32_t io_int_parm, uint32_t io_int_word);
 779 /* automatically detect the instruction length */
 780 #define ILEN_AUTO                   0xff
 781 #define RA_IGNORED                  0
 782 void s390_program_interrupt(CPUS390XState *env, uint32_t code, int ilen,
 783                             uintptr_t ra);
 784 /* service interrupts are floating therefore we must not pass an cpustate */
 785 void s390_sclp_extint(uint32_t parm);
 786
 787 /* mmu_helper.c */
 788 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
 789                          int len, bool is_write);
 790 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
 791         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
 792 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
 793         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
 794 #define s390_cpu_virt_mem_check_read(cpu, laddr, ar, len)   \
 795         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, false)
 796 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
 797         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
 798 void s390_cpu_virt_mem_handle_exc(S390CPU *cpu, uintptr_t ra);
 799
 800
 801 /* sigp.c */
 802 int s390_cpu_restart(S390CPU *cpu);
 803 void s390_init_sigp(void);
 804
 805
 806 /* outside of target/s390x/ */
 807 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 808
 809 #endif