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 "cpu-qom.h"
  25 #include "cpu_models.h"
  26 #include "exec/cpu-defs.h"
  27
  28 #define ELF_MACHINE_UNAME "S390X"
  29
  30 /* The z/Architecture has a strong memory model with some store-after-load re-ordering */
  31 #define TCG_GUEST_DEFAULT_MO      (TCG_MO_ALL & ~TCG_MO_ST_LD)
  32
  33 #define TARGET_INSN_START_EXTRA_WORDS 1
  34
  35 #define MMU_MODE0_SUFFIX _primary
  36 #define MMU_MODE1_SUFFIX _secondary
  37 #define MMU_MODE2_SUFFIX _home
  38 #define MMU_MODE3_SUFFIX _real
  39
  40 #define MMU_USER_IDX 0
  41
  42 #define S390_MAX_CPUS 248
  43
  44 typedef struct PSW {
  45     uint64_t mask;
  46     uint64_t addr;
  47 } PSW;
  48
  49 struct CPUS390XState {
  50     uint64_t regs[16];     /* GP registers */
  51     /*
  52      * The floating point registers are part of the vector registers.
  53      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  54      */
  55     uint64_t vregs[32][2] QEMU_ALIGNED(16);  /* vector registers */
  56     uint32_t aregs[16];    /* access registers */
  57     uint8_t riccb[64];     /* runtime instrumentation control */
  58     uint64_t gscb[4];      /* guarded storage control */
  59     uint64_t etoken;       /* etoken */
  60     uint64_t etoken_extension; /* etoken extension */
  61
  62     /* Fields up to this point are not cleared by initial CPU reset */
  63     struct {} start_initial_reset_fields;
  64
  65     uint32_t fpc;          /* floating-point control register */
  66     uint32_t cc_op;
  67     bool bpbc;             /* branch prediction blocking */
  68
  69     float_status fpu_status; /* passed to softfloat lib */
  70
  71     /* The low part of a 128-bit return, or remainder of a divide.  */
  72     uint64_t retxl;
  73
  74     PSW psw;
  75
  76     S390CrashReason crash_reason;
  77
  78     uint64_t cc_src;
  79     uint64_t cc_dst;
  80     uint64_t cc_vr;
  81
  82     uint64_t ex_value;
  83
  84     uint64_t __excp_addr;
  85     uint64_t psa;
  86
  87     uint32_t int_pgm_code;
  88     uint32_t int_pgm_ilen;
  89
  90     uint32_t int_svc_code;
  91     uint32_t int_svc_ilen;
  92
  93     uint64_t per_address;
  94     uint16_t per_perc_atmid;
  95
  96     uint64_t cregs[16]; /* control registers */
  97
  98     int pending_int;
  99     uint16_t external_call_addr;
 100     DECLARE_BITMAP(emergency_signals, S390_MAX_CPUS);
 101
 102     uint64_t ckc;
 103     uint64_t cputm;
 104     uint32_t todpr;
 105
 106     uint64_t pfault_token;
 107     uint64_t pfault_compare;
 108     uint64_t pfault_select;
 109
 110     uint64_t gbea;
 111     uint64_t pp;
 112
 113     /* Fields up to this point are cleared by a CPU reset */
 114     struct {} end_reset_fields;
 115
 116 #if !defined(CONFIG_USER_ONLY)
 117     uint32_t core_id; /* PoP "CPU address", same as cpu_index */
 118     uint64_t cpuid;
 119 #endif
 120
 121     QEMUTimer *tod_timer;
 122
 123     QEMUTimer *cpu_timer;
 124
 125     /*
 126      * The cpu state represents the logical state of a cpu. In contrast to other
 127      * architectures, there is a difference between a halt and a stop on s390.
 128      * If all cpus are either stopped (including check stop) or in the disabled
 129      * wait state, the vm can be shut down.
 130      * The acceptable cpu_state values are defined in the CpuInfoS390State
 131      * enum.
 132      */
 133     uint8_t cpu_state;
 134
 135     /* currently processed sigp order */
 136     uint8_t sigp_order;
 137
 138 };
 139
 140 static inline uint64_t *get_freg(CPUS390XState *cs, int nr)
 141 {
 142     return &cs->vregs[nr][0];
 143 }
 144
 145 /**
 146  * S390CPU:
 147  * @env: #CPUS390XState.
 148  *
 149  * An S/390 CPU.
 150  */
 151 struct S390CPU {
 152     /*< private >*/
 153     CPUState parent_obj;
 154     /*< public >*/
 155
 156     CPUNegativeOffsetState neg;
 157     CPUS390XState env;
 158     S390CPUModel *model;
 159     /* needed for live migration */
 160     void *irqstate;
 161     uint32_t irqstate_saved_size;
 162 };
 163
 164
 165 #ifndef CONFIG_USER_ONLY
 166 extern const struct VMStateDescription vmstate_s390_cpu;
 167 #endif
 168
 169 /* distinguish between 24 bit and 31 bit addressing */
 170 #define HIGH_ORDER_BIT 0x80000000
 171
 172 /* Interrupt Codes */
 173 /* Program Interrupts */
 174 #define PGM_OPERATION                   0x0001
 175 #define PGM_PRIVILEGED                  0x0002
 176 #define PGM_EXECUTE                     0x0003
 177 #define PGM_PROTECTION                  0x0004
 178 #define PGM_ADDRESSING                  0x0005
 179 #define PGM_SPECIFICATION               0x0006
 180 #define PGM_DATA                        0x0007
 181 #define PGM_FIXPT_OVERFLOW              0x0008
 182 #define PGM_FIXPT_DIVIDE                0x0009
 183 #define PGM_DEC_OVERFLOW                0x000a
 184 #define PGM_DEC_DIVIDE                  0x000b
 185 #define PGM_HFP_EXP_OVERFLOW            0x000c
 186 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 187 #define PGM_HFP_SIGNIFICANCE            0x000e
 188 #define PGM_HFP_DIVIDE                  0x000f
 189 #define PGM_SEGMENT_TRANS               0x0010
 190 #define PGM_PAGE_TRANS                  0x0011
 191 #define PGM_TRANS_SPEC                  0x0012
 192 #define PGM_SPECIAL_OP                  0x0013
 193 #define PGM_OPERAND                     0x0015
 194 #define PGM_TRACE_TABLE                 0x0016
 195 #define PGM_VECTOR_PROCESSING           0x001b
 196 #define PGM_SPACE_SWITCH                0x001c
 197 #define PGM_HFP_SQRT                    0x001d
 198 #define PGM_PC_TRANS_SPEC               0x001f
 199 #define PGM_AFX_TRANS                   0x0020
 200 #define PGM_ASX_TRANS                   0x0021
 201 #define PGM_LX_TRANS                    0x0022
 202 #define PGM_EX_TRANS                    0x0023
 203 #define PGM_PRIM_AUTH                   0x0024
 204 #define PGM_SEC_AUTH                    0x0025
 205 #define PGM_ALET_SPEC                   0x0028
 206 #define PGM_ALEN_SPEC                   0x0029
 207 #define PGM_ALE_SEQ                     0x002a
 208 #define PGM_ASTE_VALID                  0x002b
 209 #define PGM_ASTE_SEQ                    0x002c
 210 #define PGM_EXT_AUTH                    0x002d
 211 #define PGM_STACK_FULL                  0x0030
 212 #define PGM_STACK_EMPTY                 0x0031
 213 #define PGM_STACK_SPEC                  0x0032
 214 #define PGM_STACK_TYPE                  0x0033
 215 #define PGM_STACK_OP                    0x0034
 216 #define PGM_ASCE_TYPE                   0x0038
 217 #define PGM_REG_FIRST_TRANS             0x0039
 218 #define PGM_REG_SEC_TRANS               0x003a
 219 #define PGM_REG_THIRD_TRANS             0x003b
 220 #define PGM_MONITOR                     0x0040
 221 #define PGM_PER                         0x0080
 222 #define PGM_CRYPTO                      0x0119
 223
 224 /* External Interrupts */
 225 #define EXT_INTERRUPT_KEY               0x0040
 226 #define EXT_CLOCK_COMP                  0x1004
 227 #define EXT_CPU_TIMER                   0x1005
 228 #define EXT_MALFUNCTION                 0x1200
 229 #define EXT_EMERGENCY                   0x1201
 230 #define EXT_EXTERNAL_CALL               0x1202
 231 #define EXT_ETR                         0x1406
 232 #define EXT_SERVICE                     0x2401
 233 #define EXT_VIRTIO                      0x2603
 234
 235 /* PSW defines */
 236 #undef PSW_MASK_PER
 237 #undef PSW_MASK_UNUSED_2
 238 #undef PSW_MASK_UNUSED_3
 239 #undef PSW_MASK_DAT
 240 #undef PSW_MASK_IO
 241 #undef PSW_MASK_EXT
 242 #undef PSW_MASK_KEY
 243 #undef PSW_SHIFT_KEY
 244 #undef PSW_MASK_MCHECK
 245 #undef PSW_MASK_WAIT
 246 #undef PSW_MASK_PSTATE
 247 #undef PSW_MASK_ASC
 248 #undef PSW_SHIFT_ASC
 249 #undef PSW_MASK_CC
 250 #undef PSW_MASK_PM
 251 #undef PSW_SHIFT_MASK_PM
 252 #undef PSW_MASK_64
 253 #undef PSW_MASK_32
 254 #undef PSW_MASK_ESA_ADDR
 255
 256 #define PSW_MASK_PER            0x4000000000000000ULL
 257 #define PSW_MASK_UNUSED_2       0x2000000000000000ULL
 258 #define PSW_MASK_UNUSED_3       0x1000000000000000ULL
 259 #define PSW_MASK_DAT            0x0400000000000000ULL
 260 #define PSW_MASK_IO             0x0200000000000000ULL
 261 #define PSW_MASK_EXT            0x0100000000000000ULL
 262 #define PSW_MASK_KEY            0x00F0000000000000ULL
 263 #define PSW_SHIFT_KEY           52
 264 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 265 #define PSW_MASK_WAIT           0x0002000000000000ULL
 266 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 267 #define PSW_MASK_ASC            0x0000C00000000000ULL
 268 #define PSW_SHIFT_ASC           46
 269 #define PSW_MASK_CC             0x0000300000000000ULL
 270 #define PSW_MASK_PM             0x00000F0000000000ULL
 271 #define PSW_SHIFT_MASK_PM       40
 272 #define PSW_MASK_64             0x0000000100000000ULL
 273 #define PSW_MASK_32             0x0000000080000000ULL
 274 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 275
 276 #undef PSW_ASC_PRIMARY
 277 #undef PSW_ASC_ACCREG
 278 #undef PSW_ASC_SECONDARY
 279 #undef PSW_ASC_HOME
 280
 281 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 282 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 283 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 284 #define PSW_ASC_HOME            0x0000C00000000000ULL
 285
 286 /* the address space values shifted */
 287 #define AS_PRIMARY              0
 288 #define AS_ACCREG               1
 289 #define AS_SECONDARY            2
 290 #define AS_HOME                 3
 291
 292 /* tb flags */
 293
 294 #define FLAG_MASK_PSW_SHIFT     31
 295 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 296 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> FLAG_MASK_PSW_SHIFT)
 297 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 298 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 299 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 300 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 301 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_DAT | FLAG_MASK_PSTATE \
 302                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 303
 304 /* we'll use some unused PSW positions to store CR flags in tb flags */
 305 #define FLAG_MASK_AFP           (PSW_MASK_UNUSED_2 >> FLAG_MASK_PSW_SHIFT)
 306 #define FLAG_MASK_VECTOR        (PSW_MASK_UNUSED_3 >> FLAG_MASK_PSW_SHIFT)
 307
 308 /* Control register 0 bits */
 309 #define CR0_LOWPROT             0x0000000010000000ULL
 310 #define CR0_SECONDARY           0x0000000004000000ULL
 311 #define CR0_EDAT                0x0000000000800000ULL
 312 #define CR0_AFP                 0x0000000000040000ULL
 313 #define CR0_VECTOR              0x0000000000020000ULL
 314 #define CR0_EMERGENCY_SIGNAL_SC 0x0000000000004000ULL
 315 #define CR0_EXTERNAL_CALL_SC    0x0000000000002000ULL
 316 #define CR0_CKC_SC              0x0000000000000800ULL
 317 #define CR0_CPU_TIMER_SC        0x0000000000000400ULL
 318 #define CR0_SERVICE_SC          0x0000000000000200ULL
 319
 320 /* Control register 14 bits */
 321 #define CR14_CHANNEL_REPORT_SC  0x0000000010000000ULL
 322
 323 /* MMU */
 324 #define MMU_PRIMARY_IDX         0
 325 #define MMU_SECONDARY_IDX       1
 326 #define MMU_HOME_IDX            2
 327 #define MMU_REAL_IDX            3
 328
 329 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 330 {
 331     if (!(env->psw.mask & PSW_MASK_DAT)) {
 332         return MMU_REAL_IDX;
 333     }
 334
 335     switch (env->psw.mask & PSW_MASK_ASC) {
 336     case PSW_ASC_PRIMARY:
 337         return MMU_PRIMARY_IDX;
 338     case PSW_ASC_SECONDARY:
 339         return MMU_SECONDARY_IDX;
 340     case PSW_ASC_HOME:
 341         return MMU_HOME_IDX;
 342     case PSW_ASC_ACCREG:
 343         /* Fallthrough: access register mode is not yet supported */
 344     default:
 345         abort();
 346     }
 347 }
 348
 349 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 350                                         target_ulong *cs_base, uint32_t *flags)
 351 {
 352     *pc = env->psw.addr;
 353     *cs_base = env->ex_value;
 354     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 355     if (env->cregs[0] & CR0_AFP) {
 356         *flags |= FLAG_MASK_AFP;
 357     }
 358     if (env->cregs[0] & CR0_VECTOR) {
 359         *flags |= FLAG_MASK_VECTOR;
 360     }
 361 }
 362
 363 /* PER bits from control register 9 */
 364 #define PER_CR9_EVENT_BRANCH           0x80000000
 365 #define PER_CR9_EVENT_IFETCH           0x40000000
 366 #define PER_CR9_EVENT_STORE            0x20000000
 367 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 368 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 369 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 370 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 371
 372 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 373 #define PER_CODE_EVENT_BRANCH          0x8000
 374 #define PER_CODE_EVENT_IFETCH          0x4000
 375 #define PER_CODE_EVENT_STORE           0x2000
 376 #define PER_CODE_EVENT_STORE_REAL      0x0800
 377 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 378
 379 #define EXCP_EXT 1 /* external interrupt */
 380 #define EXCP_SVC 2 /* supervisor call (syscall) */
 381 #define EXCP_PGM 3 /* program interruption */
 382 #define EXCP_RESTART 4 /* restart interrupt */
 383 #define EXCP_STOP 5 /* stop interrupt */
 384 #define EXCP_IO  7 /* I/O interrupt */
 385 #define EXCP_MCHK 8 /* machine check */
 386
 387 #define INTERRUPT_EXT_CPU_TIMER          (1 << 3)
 388 #define INTERRUPT_EXT_CLOCK_COMPARATOR   (1 << 4)
 389 #define INTERRUPT_EXTERNAL_CALL          (1 << 5)
 390 #define INTERRUPT_EMERGENCY_SIGNAL       (1 << 6)
 391 #define INTERRUPT_RESTART                (1 << 7)
 392 #define INTERRUPT_STOP                   (1 << 8)
 393
 394 /* Program Status Word.  */
 395 #define S390_PSWM_REGNUM 0
 396 #define S390_PSWA_REGNUM 1
 397 /* General Purpose Registers.  */
 398 #define S390_R0_REGNUM 2
 399 #define S390_R1_REGNUM 3
 400 #define S390_R2_REGNUM 4
 401 #define S390_R3_REGNUM 5
 402 #define S390_R4_REGNUM 6
 403 #define S390_R5_REGNUM 7
 404 #define S390_R6_REGNUM 8
 405 #define S390_R7_REGNUM 9
 406 #define S390_R8_REGNUM 10
 407 #define S390_R9_REGNUM 11
 408 #define S390_R10_REGNUM 12
 409 #define S390_R11_REGNUM 13
 410 #define S390_R12_REGNUM 14
 411 #define S390_R13_REGNUM 15
 412 #define S390_R14_REGNUM 16
 413 #define S390_R15_REGNUM 17
 414 /* Total Core Registers. */
 415 #define S390_NUM_CORE_REGS 18
 416
 417 static inline void setcc(S390CPU *cpu, uint64_t cc)
 418 {
 419     CPUS390XState *env = &cpu->env;
 420
 421     env->psw.mask &= ~(3ull << 44);
 422     env->psw.mask |= (cc & 3) << 44;
 423     env->cc_op = cc;
 424 }
 425
 426 /* STSI */
 427 #define STSI_R0_FC_MASK         0x00000000f0000000ULL
 428 #define STSI_R0_FC_CURRENT      0x0000000000000000ULL
 429 #define STSI_R0_FC_LEVEL_1      0x0000000010000000ULL
 430 #define STSI_R0_FC_LEVEL_2      0x0000000020000000ULL
 431 #define STSI_R0_FC_LEVEL_3      0x0000000030000000ULL
 432 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 433 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 434 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 435 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 436
 437 /* Basic Machine Configuration */
 438 typedef struct SysIB_111 {
 439     uint8_t  res1[32];
 440     uint8_t  manuf[16];
 441     uint8_t  type[4];
 442     uint8_t  res2[12];
 443     uint8_t  model[16];
 444     uint8_t  sequence[16];
 445     uint8_t  plant[4];
 446     uint8_t  res3[3996];
 447 } SysIB_111;
 448 QEMU_BUILD_BUG_ON(sizeof(SysIB_111) != 4096);
 449
 450 /* Basic Machine CPU */
 451 typedef struct SysIB_121 {
 452     uint8_t  res1[80];
 453     uint8_t  sequence[16];
 454     uint8_t  plant[4];
 455     uint8_t  res2[2];
 456     uint16_t cpu_addr;
 457     uint8_t  res3[3992];
 458 } SysIB_121;
 459 QEMU_BUILD_BUG_ON(sizeof(SysIB_121) != 4096);
 460
 461 /* Basic Machine CPUs */
 462 typedef struct SysIB_122 {
 463     uint8_t res1[32];
 464     uint32_t capability;
 465     uint16_t total_cpus;
 466     uint16_t conf_cpus;
 467     uint16_t standby_cpus;
 468     uint16_t reserved_cpus;
 469     uint16_t adjustments[2026];
 470 } SysIB_122;
 471 QEMU_BUILD_BUG_ON(sizeof(SysIB_122) != 4096);
 472
 473 /* LPAR CPU */
 474 typedef struct SysIB_221 {
 475     uint8_t  res1[80];
 476     uint8_t  sequence[16];
 477     uint8_t  plant[4];
 478     uint16_t cpu_id;
 479     uint16_t cpu_addr;
 480     uint8_t  res3[3992];
 481 } SysIB_221;
 482 QEMU_BUILD_BUG_ON(sizeof(SysIB_221) != 4096);
 483
 484 /* LPAR CPUs */
 485 typedef struct SysIB_222 {
 486     uint8_t  res1[32];
 487     uint16_t lpar_num;
 488     uint8_t  res2;
 489     uint8_t  lcpuc;
 490     uint16_t total_cpus;
 491     uint16_t conf_cpus;
 492     uint16_t standby_cpus;
 493     uint16_t reserved_cpus;
 494     uint8_t  name[8];
 495     uint32_t caf;
 496     uint8_t  res3[16];
 497     uint16_t dedicated_cpus;
 498     uint16_t shared_cpus;
 499     uint8_t  res4[4020];
 500 } SysIB_222;
 501 QEMU_BUILD_BUG_ON(sizeof(SysIB_222) != 4096);
 502
 503 /* VM CPUs */
 504 typedef struct SysIB_322 {
 505     uint8_t  res1[31];
 506     uint8_t  count;
 507     struct {
 508         uint8_t  res2[4];
 509         uint16_t total_cpus;
 510         uint16_t conf_cpus;
 511         uint16_t standby_cpus;
 512         uint16_t reserved_cpus;
 513         uint8_t  name[8];
 514         uint32_t caf;
 515         uint8_t  cpi[16];
 516         uint8_t res5[3];
 517         uint8_t ext_name_encoding;
 518         uint32_t res3;
 519         uint8_t uuid[16];
 520     } vm[8];
 521     uint8_t res4[1504];
 522     uint8_t ext_names[8][256];
 523 } SysIB_322;
 524 QEMU_BUILD_BUG_ON(sizeof(SysIB_322) != 4096);
 525
 526 typedef union SysIB {
 527     SysIB_111 sysib_111;
 528     SysIB_121 sysib_121;
 529     SysIB_122 sysib_122;
 530     SysIB_221 sysib_221;
 531     SysIB_222 sysib_222;
 532     SysIB_322 sysib_322;
 533 } SysIB;
 534 QEMU_BUILD_BUG_ON(sizeof(SysIB) != 4096);
 535
 536 /* MMU defines */
 537 #define ASCE_ORIGIN           (~0xfffULL) /* segment table origin             */
 538 #define ASCE_SUBSPACE         0x200       /* subspace group control           */
 539 #define ASCE_PRIVATE_SPACE    0x100       /* private space control            */
 540 #define ASCE_ALT_EVENT        0x80        /* storage alteration event control */
 541 #define ASCE_SPACE_SWITCH     0x40        /* space switch event               */
 542 #define ASCE_REAL_SPACE       0x20        /* real space control               */
 543 #define ASCE_TYPE_MASK        0x0c        /* asce table type mask             */
 544 #define ASCE_TYPE_REGION1     0x0c        /* region first table type          */
 545 #define ASCE_TYPE_REGION2     0x08        /* region second table type         */
 546 #define ASCE_TYPE_REGION3     0x04        /* region third table type          */
 547 #define ASCE_TYPE_SEGMENT     0x00        /* segment table type               */
 548 #define ASCE_TABLE_LENGTH     0x03        /* region table length              */
 549
 550 #define REGION_ENTRY_ORIGIN   (~0xfffULL) /* region/segment table origin    */
 551 #define REGION_ENTRY_RO       0x200       /* region/segment protection bit  */
 552 #define REGION_ENTRY_TF       0xc0        /* region/segment table offset    */
 553 #define REGION_ENTRY_INV      0x20        /* invalid region table entry     */
 554 #define REGION_ENTRY_TYPE_MASK 0x0c       /* region/segment table type mask */
 555 #define REGION_ENTRY_TYPE_R1  0x0c        /* region first table type        */
 556 #define REGION_ENTRY_TYPE_R2  0x08        /* region second table type       */
 557 #define REGION_ENTRY_TYPE_R3  0x04        /* region third table type        */
 558 #define REGION_ENTRY_LENGTH   0x03        /* region third length            */
 559
 560 #define SEGMENT_ENTRY_ORIGIN  (~0x7ffULL) /* segment table origin        */
 561 #define SEGMENT_ENTRY_FC      0x400       /* format control              */
 562 #define SEGMENT_ENTRY_RO      0x200       /* page protection bit         */
 563 #define SEGMENT_ENTRY_INV     0x20        /* invalid segment table entry */
 564
 565 #define VADDR_PX              0xff000     /* page index bits   */
 566
 567 #define PAGE_RO               0x200       /* HW read-only bit  */
 568 #define PAGE_INVALID          0x400       /* HW invalid bit    */
 569 #define PAGE_RES0             0x800       /* bit must be zero  */
 570
 571 #define SK_C                    (0x1 << 1)
 572 #define SK_R                    (0x1 << 2)
 573 #define SK_F                    (0x1 << 3)
 574 #define SK_ACC_MASK             (0xf << 4)
 575
 576 /* SIGP order codes */
 577 #define SIGP_SENSE             0x01
 578 #define SIGP_EXTERNAL_CALL     0x02
 579 #define SIGP_EMERGENCY         0x03
 580 #define SIGP_START             0x04
 581 #define SIGP_STOP              0x05
 582 #define SIGP_RESTART           0x06
 583 #define SIGP_STOP_STORE_STATUS 0x09
 584 #define SIGP_INITIAL_CPU_RESET 0x0b
 585 #define SIGP_CPU_RESET         0x0c
 586 #define SIGP_SET_PREFIX        0x0d
 587 #define SIGP_STORE_STATUS_ADDR 0x0e
 588 #define SIGP_SET_ARCH          0x12
 589 #define SIGP_COND_EMERGENCY    0x13
 590 #define SIGP_SENSE_RUNNING     0x15
 591 #define SIGP_STORE_ADTL_STATUS 0x17
 592
 593 /* SIGP condition codes */
 594 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
 595 #define SIGP_CC_STATUS_STORED       1
 596 #define SIGP_CC_BUSY                2
 597 #define SIGP_CC_NOT_OPERATIONAL     3
 598
 599 /* SIGP status bits */
 600 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 601 #define SIGP_STAT_NOT_RUNNING       0x00000400UL
 602 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 603 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 604 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 605 #define SIGP_STAT_STOPPED           0x00000040UL
 606 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 607 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 608 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 609 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 610 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 611
 612 /* SIGP SET ARCHITECTURE modes */
 613 #define SIGP_MODE_ESA_S390 0
 614 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
 615 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
 616
 617 /* SIGP order code mask corresponding to bit positions 56-63 */
 618 #define SIGP_ORDER_MASK 0x000000ff
 619
 620 /* machine check interruption code */
 621
 622 /* subclasses */
 623 #define MCIC_SC_SD 0x8000000000000000ULL
 624 #define MCIC_SC_PD 0x4000000000000000ULL
 625 #define MCIC_SC_SR 0x2000000000000000ULL
 626 #define MCIC_SC_CD 0x0800000000000000ULL
 627 #define MCIC_SC_ED 0x0400000000000000ULL
 628 #define MCIC_SC_DG 0x0100000000000000ULL
 629 #define MCIC_SC_W  0x0080000000000000ULL
 630 #define MCIC_SC_CP 0x0040000000000000ULL
 631 #define MCIC_SC_SP 0x0020000000000000ULL
 632 #define MCIC_SC_CK 0x0010000000000000ULL
 633
 634 /* subclass modifiers */
 635 #define MCIC_SCM_B  0x0002000000000000ULL
 636 #define MCIC_SCM_DA 0x0000000020000000ULL
 637 #define MCIC_SCM_AP 0x0000000000080000ULL
 638
 639 /* storage errors */
 640 #define MCIC_SE_SE 0x0000800000000000ULL
 641 #define MCIC_SE_SC 0x0000400000000000ULL
 642 #define MCIC_SE_KE 0x0000200000000000ULL
 643 #define MCIC_SE_DS 0x0000100000000000ULL
 644 #define MCIC_SE_IE 0x0000000080000000ULL
 645
 646 /* validity bits */
 647 #define MCIC_VB_WP 0x0000080000000000ULL
 648 #define MCIC_VB_MS 0x0000040000000000ULL
 649 #define MCIC_VB_PM 0x0000020000000000ULL
 650 #define MCIC_VB_IA 0x0000010000000000ULL
 651 #define MCIC_VB_FA 0x0000008000000000ULL
 652 #define MCIC_VB_VR 0x0000004000000000ULL
 653 #define MCIC_VB_EC 0x0000002000000000ULL
 654 #define MCIC_VB_FP 0x0000001000000000ULL
 655 #define MCIC_VB_GR 0x0000000800000000ULL
 656 #define MCIC_VB_CR 0x0000000400000000ULL
 657 #define MCIC_VB_ST 0x0000000100000000ULL
 658 #define MCIC_VB_AR 0x0000000040000000ULL
 659 #define MCIC_VB_GS 0x0000000008000000ULL
 660 #define MCIC_VB_PR 0x0000000000200000ULL
 661 #define MCIC_VB_FC 0x0000000000100000ULL
 662 #define MCIC_VB_CT 0x0000000000020000ULL
 663 #define MCIC_VB_CC 0x0000000000010000ULL
 664
 665 static inline uint64_t s390_build_validity_mcic(void)
 666 {
 667     uint64_t mcic;
 668
 669     /*
 670      * Indicate all validity bits (no damage) only. Other bits have to be
 671      * added by the caller. (storage errors, subclasses and subclass modifiers)
 672      */
 673     mcic = MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
 674            MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
 675            MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
 676     if (s390_has_feat(S390_FEAT_VECTOR)) {
 677         mcic |= MCIC_VB_VR;
 678     }
 679     if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
 680         mcic |= MCIC_VB_GS;
 681     }
 682     return mcic;
 683 }
 684
 685 static inline void s390_do_cpu_full_reset(CPUState *cs, run_on_cpu_data arg)
 686 {
 687     cpu_reset(cs);
 688 }
 689
 690 static inline void s390_do_cpu_reset(CPUState *cs, run_on_cpu_data arg)
 691 {
 692     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 693
 694     scc->cpu_reset(cs);
 695 }
 696
 697 static inline void s390_do_cpu_initial_reset(CPUState *cs, run_on_cpu_data arg)
 698 {
 699     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 700
 701     scc->initial_cpu_reset(cs);
 702 }
 703
 704 static inline void s390_do_cpu_load_normal(CPUState *cs, run_on_cpu_data arg)
 705 {
 706     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 707
 708     scc->load_normal(cs);
 709 }
 710
 711
 712 /* cpu.c */
 713 void s390_crypto_reset(void);
 714 int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
 715 void s390_set_max_pagesize(uint64_t pagesize, Error **errp);
 716 void s390_cmma_reset(void);
 717 void s390_enable_css_support(S390CPU *cpu);
 718 int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
 719                                 int vq, bool assign);
 720 #ifndef CONFIG_USER_ONLY
 721 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 722 #else
 723 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 724 {
 725     return 0;
 726 }
 727 #endif /* CONFIG_USER_ONLY */
 728 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 729 {
 730     return cpu->env.cpu_state;
 731 }
 732
 733
 734 /* cpu_models.c */
 735 void s390_cpu_list(void);
 736 #define cpu_list s390_cpu_list
 737 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
 738                              const S390FeatInit feat_init);
 739
 740
 741 /* helper.c */
 742 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
 743 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
 744 #define CPU_RESOLVING_TYPE TYPE_S390_CPU
 745
 746 /* you can call this signal handler from your SIGBUS and SIGSEGV
 747    signal handlers to inform the virtual CPU of exceptions. non zero
 748    is returned if the signal was handled by the virtual CPU.  */
 749 int cpu_s390x_signal_handler(int host_signum, void *pinfo, void *puc);
 750 #define cpu_signal_handler cpu_s390x_signal_handler
 751
 752
 753 /* interrupt.c */
 754 void s390_crw_mchk(void);
 755 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 756                        uint32_t io_int_parm, uint32_t io_int_word);
 757 /* automatically detect the instruction length */
 758 #define ILEN_AUTO                   0xff
 759 #define RA_IGNORED                  0
 760 void s390_program_interrupt(CPUS390XState *env, uint32_t code, int ilen,
 761                             uintptr_t ra);
 762 /* service interrupts are floating therefore we must not pass an cpustate */
 763 void s390_sclp_extint(uint32_t parm);
 764
 765 /* mmu_helper.c */
 766 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
 767                          int len, bool is_write);
 768 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
 769         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
 770 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
 771         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
 772 #define s390_cpu_virt_mem_check_read(cpu, laddr, ar, len)   \
 773         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, false)
 774 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
 775         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
 776 void s390_cpu_virt_mem_handle_exc(S390CPU *cpu, uintptr_t ra);
 777
 778
 779 /* sigp.c */
 780 int s390_cpu_restart(S390CPU *cpu);
 781 void s390_init_sigp(void);
 782
 783
 784 /* outside of target/s390x/ */
 785 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 786
 787 typedef CPUS390XState CPUArchState;
 788 typedef S390CPU ArchCPU;
 789
 790 #include "exec/cpu-all.h"
 791
 792 #endif