target/s390x/cpu.h

   1 /*
   2  * S/390 virtual CPU header
   3  *
   4  * For details on the s390x architecture and used definitions (e.g.,
   5  * PSW, PER and DAT (Dynamic Address Translation)), please refer to
   6  * the "z/Architecture Principles of Operations" - a.k.a. PoP.
   7  *
   8  *  Copyright (c) 2009 Ulrich Hecht
   9  *  Copyright IBM Corp. 2012, 2018
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #ifndef S390X_CPU_H
  26 #define S390X_CPU_H
  27
  28 #include "cpu-qom.h"
  29 #include "cpu_models.h"
  30 #include "exec/cpu-defs.h"
  31
  32 #define ELF_MACHINE_UNAME "S390X"
  33
  34 /* The z/Architecture has a strong memory model with some store-after-load re-ordering */
  35 #define TCG_GUEST_DEFAULT_MO      (TCG_MO_ALL & ~TCG_MO_ST_LD)
  36
  37 #define TARGET_INSN_START_EXTRA_WORDS 2
  38
  39 #define MMU_USER_IDX 0
  40
  41 #define S390_MAX_CPUS 248
  42
  43 typedef struct PSW {
  44     uint64_t mask;
  45     uint64_t addr;
  46 } PSW;
  47
  48 struct CPUS390XState {
  49     uint64_t regs[16];     /* GP registers */
  50     /*
  51      * The floating point registers are part of the vector registers.
  52      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  53      */
  54     uint64_t vregs[32][2] QEMU_ALIGNED(16);  /* vector registers */
  55     uint32_t aregs[16];    /* access registers */
  56     uint64_t gscb[4];      /* guarded storage control */
  57     uint64_t etoken;       /* etoken */
  58     uint64_t etoken_extension; /* etoken extension */
  59
  60     /* Fields up to this point are not cleared by initial CPU reset */
  61     struct {} start_initial_reset_fields;
  62
  63     uint32_t fpc;          /* floating-point control register */
  64     uint32_t cc_op;
  65     bool bpbc;             /* branch prediction blocking */
  66
  67     float_status fpu_status; /* passed to softfloat lib */
  68
  69     /* The low part of a 128-bit return, or remainder of a divide.  */
  70     uint64_t retxl;
  71
  72     PSW psw;
  73
  74     S390CrashReason crash_reason;
  75
  76     uint64_t cc_src;
  77     uint64_t cc_dst;
  78     uint64_t cc_vr;
  79
  80     uint64_t ex_value;
  81
  82     uint64_t __excp_addr;
  83     uint64_t psa;
  84
  85     uint32_t int_pgm_code;
  86     uint32_t int_pgm_ilen;
  87
  88     uint32_t int_svc_code;
  89     uint32_t int_svc_ilen;
  90
  91     uint64_t per_address;
  92     uint16_t per_perc_atmid;
  93
  94     uint64_t cregs[16]; /* control registers */
  95
  96     uint64_t ckc;
  97     uint64_t cputm;
  98     uint32_t todpr;
  99
 100     uint64_t pfault_token;
 101     uint64_t pfault_compare;
 102     uint64_t pfault_select;
 103
 104     uint64_t gbea;
 105     uint64_t pp;
 106
 107     /* Fields up to this point are not cleared by normal CPU reset */
 108     struct {} start_normal_reset_fields;
 109     uint8_t riccb[64];     /* runtime instrumentation control */
 110
 111     int pending_int;
 112     uint16_t external_call_addr;
 113     DECLARE_BITMAP(emergency_signals, S390_MAX_CPUS);
 114
 115     uint64_t diag318_info;
 116
 117 #if !defined(CONFIG_USER_ONLY)
 118     uint64_t tlb_fill_tec;   /* translation exception code during tlb_fill */
 119     int tlb_fill_exc;        /* exception number seen during tlb_fill */
 120 #endif
 121
 122     /* Fields up to this point are cleared by a CPU reset */
 123     struct {} end_reset_fields;
 124
 125 #if !defined(CONFIG_USER_ONLY)
 126     uint32_t core_id; /* PoP "CPU address", same as cpu_index */
 127     uint64_t cpuid;
 128 #endif
 129
 130     QEMUTimer *tod_timer;
 131
 132     QEMUTimer *cpu_timer;
 133
 134     /*
 135      * The cpu state represents the logical state of a cpu. In contrast to other
 136      * architectures, there is a difference between a halt and a stop on s390.
 137      * If all cpus are either stopped (including check stop) or in the disabled
 138      * wait state, the vm can be shut down.
 139      * The acceptable cpu_state values are defined in the CpuInfoS390State
 140      * enum.
 141      */
 142     uint8_t cpu_state;
 143
 144     /* currently processed sigp order */
 145     uint8_t sigp_order;
 146
 147 };
 148
 149 static inline uint64_t *get_freg(CPUS390XState *cs, int nr)
 150 {
 151     return &cs->vregs[nr][0];
 152 }
 153
 154 /**
 155  * S390CPU:
 156  * @env: #CPUS390XState.
 157  *
 158  * An S/390 CPU.
 159  */
 160 struct S390CPU {
 161     /*< private >*/
 162     CPUState parent_obj;
 163     /*< public >*/
 164
 165     CPUNegativeOffsetState neg;
 166     CPUS390XState env;
 167     S390CPUModel *model;
 168     /* needed for live migration */
 169     void *irqstate;
 170     uint32_t irqstate_saved_size;
 171 };
 172
 173
 174 #ifndef CONFIG_USER_ONLY
 175 extern const VMStateDescription vmstate_s390_cpu;
 176 #endif
 177
 178 /* distinguish between 24 bit and 31 bit addressing */
 179 #define HIGH_ORDER_BIT 0x80000000
 180
 181 /* Interrupt Codes */
 182 /* Program Interrupts */
 183 #define PGM_OPERATION                   0x0001
 184 #define PGM_PRIVILEGED                  0x0002
 185 #define PGM_EXECUTE                     0x0003
 186 #define PGM_PROTECTION                  0x0004
 187 #define PGM_ADDRESSING                  0x0005
 188 #define PGM_SPECIFICATION               0x0006
 189 #define PGM_DATA                        0x0007
 190 #define PGM_FIXPT_OVERFLOW              0x0008
 191 #define PGM_FIXPT_DIVIDE                0x0009
 192 #define PGM_DEC_OVERFLOW                0x000a
 193 #define PGM_DEC_DIVIDE                  0x000b
 194 #define PGM_HFP_EXP_OVERFLOW            0x000c
 195 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 196 #define PGM_HFP_SIGNIFICANCE            0x000e
 197 #define PGM_HFP_DIVIDE                  0x000f
 198 #define PGM_SEGMENT_TRANS               0x0010
 199 #define PGM_PAGE_TRANS                  0x0011
 200 #define PGM_TRANS_SPEC                  0x0012
 201 #define PGM_SPECIAL_OP                  0x0013
 202 #define PGM_OPERAND                     0x0015
 203 #define PGM_TRACE_TABLE                 0x0016
 204 #define PGM_VECTOR_PROCESSING           0x001b
 205 #define PGM_SPACE_SWITCH                0x001c
 206 #define PGM_HFP_SQRT                    0x001d
 207 #define PGM_PC_TRANS_SPEC               0x001f
 208 #define PGM_AFX_TRANS                   0x0020
 209 #define PGM_ASX_TRANS                   0x0021
 210 #define PGM_LX_TRANS                    0x0022
 211 #define PGM_EX_TRANS                    0x0023
 212 #define PGM_PRIM_AUTH                   0x0024
 213 #define PGM_SEC_AUTH                    0x0025
 214 #define PGM_ALET_SPEC                   0x0028
 215 #define PGM_ALEN_SPEC                   0x0029
 216 #define PGM_ALE_SEQ                     0x002a
 217 #define PGM_ASTE_VALID                  0x002b
 218 #define PGM_ASTE_SEQ                    0x002c
 219 #define PGM_EXT_AUTH                    0x002d
 220 #define PGM_STACK_FULL                  0x0030
 221 #define PGM_STACK_EMPTY                 0x0031
 222 #define PGM_STACK_SPEC                  0x0032
 223 #define PGM_STACK_TYPE                  0x0033
 224 #define PGM_STACK_OP                    0x0034
 225 #define PGM_ASCE_TYPE                   0x0038
 226 #define PGM_REG_FIRST_TRANS             0x0039
 227 #define PGM_REG_SEC_TRANS               0x003a
 228 #define PGM_REG_THIRD_TRANS             0x003b
 229 #define PGM_MONITOR                     0x0040
 230 #define PGM_PER                         0x0080
 231 #define PGM_CRYPTO                      0x0119
 232
 233 /* External Interrupts */
 234 #define EXT_INTERRUPT_KEY               0x0040
 235 #define EXT_CLOCK_COMP                  0x1004
 236 #define EXT_CPU_TIMER                   0x1005
 237 #define EXT_MALFUNCTION                 0x1200
 238 #define EXT_EMERGENCY                   0x1201
 239 #define EXT_EXTERNAL_CALL               0x1202
 240 #define EXT_ETR                         0x1406
 241 #define EXT_SERVICE                     0x2401
 242 #define EXT_VIRTIO                      0x2603
 243
 244 /* PSW defines */
 245 #undef PSW_MASK_PER
 246 #undef PSW_MASK_UNUSED_2
 247 #undef PSW_MASK_UNUSED_3
 248 #undef PSW_MASK_DAT
 249 #undef PSW_MASK_IO
 250 #undef PSW_MASK_EXT
 251 #undef PSW_MASK_KEY
 252 #undef PSW_SHIFT_KEY
 253 #undef PSW_MASK_MCHECK
 254 #undef PSW_MASK_WAIT
 255 #undef PSW_MASK_PSTATE
 256 #undef PSW_MASK_ASC
 257 #undef PSW_SHIFT_ASC
 258 #undef PSW_MASK_CC
 259 #undef PSW_MASK_PM
 260 #undef PSW_MASK_RI
 261 #undef PSW_SHIFT_MASK_PM
 262 #undef PSW_MASK_64
 263 #undef PSW_MASK_32
 264 #undef PSW_MASK_ESA_ADDR
 265
 266 #define PSW_MASK_PER            0x4000000000000000ULL
 267 #define PSW_MASK_UNUSED_2       0x2000000000000000ULL
 268 #define PSW_MASK_UNUSED_3       0x1000000000000000ULL
 269 #define PSW_MASK_DAT            0x0400000000000000ULL
 270 #define PSW_MASK_IO             0x0200000000000000ULL
 271 #define PSW_MASK_EXT            0x0100000000000000ULL
 272 #define PSW_MASK_KEY            0x00F0000000000000ULL
 273 #define PSW_SHIFT_KEY           52
 274 #define PSW_MASK_SHORTPSW       0x0008000000000000ULL
 275 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 276 #define PSW_MASK_WAIT           0x0002000000000000ULL
 277 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 278 #define PSW_MASK_ASC            0x0000C00000000000ULL
 279 #define PSW_SHIFT_ASC           46
 280 #define PSW_MASK_CC             0x0000300000000000ULL
 281 #define PSW_MASK_PM             0x00000F0000000000ULL
 282 #define PSW_SHIFT_MASK_PM       40
 283 #define PSW_MASK_RI             0x0000008000000000ULL
 284 #define PSW_MASK_64             0x0000000100000000ULL
 285 #define PSW_MASK_32             0x0000000080000000ULL
 286 #define PSW_MASK_SHORT_ADDR     0x000000007fffffffULL
 287 #define PSW_MASK_SHORT_CTRL     0xffffffff80000000ULL
 288
 289 #undef PSW_ASC_PRIMARY
 290 #undef PSW_ASC_ACCREG
 291 #undef PSW_ASC_SECONDARY
 292 #undef PSW_ASC_HOME
 293
 294 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 295 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 296 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 297 #define PSW_ASC_HOME            0x0000C00000000000ULL
 298
 299 /* the address space values shifted */
 300 #define AS_PRIMARY              0
 301 #define AS_ACCREG               1
 302 #define AS_SECONDARY            2
 303 #define AS_HOME                 3
 304
 305 /* tb flags */
 306
 307 #define FLAG_MASK_PSW_SHIFT     31
 308 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 309 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> FLAG_MASK_PSW_SHIFT)
 310 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 311 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 312 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 313 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 314 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_DAT | FLAG_MASK_PSTATE \
 315                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 316
 317 /* we'll use some unused PSW positions to store CR flags in tb flags */
 318 #define FLAG_MASK_AFP           (PSW_MASK_UNUSED_2 >> FLAG_MASK_PSW_SHIFT)
 319 #define FLAG_MASK_VECTOR        (PSW_MASK_UNUSED_3 >> FLAG_MASK_PSW_SHIFT)
 320
 321 /* Control register 0 bits */
 322 #define CR0_LOWPROT             0x0000000010000000ULL
 323 #define CR0_SECONDARY           0x0000000004000000ULL
 324 #define CR0_EDAT                0x0000000000800000ULL
 325 #define CR0_AFP                 0x0000000000040000ULL
 326 #define CR0_VECTOR              0x0000000000020000ULL
 327 #define CR0_IEP                 0x0000000000100000ULL
 328 #define CR0_EMERGENCY_SIGNAL_SC 0x0000000000004000ULL
 329 #define CR0_EXTERNAL_CALL_SC    0x0000000000002000ULL
 330 #define CR0_CKC_SC              0x0000000000000800ULL
 331 #define CR0_CPU_TIMER_SC        0x0000000000000400ULL
 332 #define CR0_SERVICE_SC          0x0000000000000200ULL
 333
 334 /* Control register 14 bits */
 335 #define CR14_CHANNEL_REPORT_SC  0x0000000010000000ULL
 336
 337 /* MMU */
 338 #define MMU_PRIMARY_IDX         0
 339 #define MMU_SECONDARY_IDX       1
 340 #define MMU_HOME_IDX            2
 341 #define MMU_REAL_IDX            3
 342
 343 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 344 {
 345 #ifdef CONFIG_USER_ONLY
 346     return MMU_USER_IDX;
 347 #else
 348     if (!(env->psw.mask & PSW_MASK_DAT)) {
 349         return MMU_REAL_IDX;
 350     }
 351
 352     if (ifetch) {
 353         if ((env->psw.mask & PSW_MASK_ASC) == PSW_ASC_HOME) {
 354             return MMU_HOME_IDX;
 355         }
 356         return MMU_PRIMARY_IDX;
 357     }
 358
 359     switch (env->psw.mask & PSW_MASK_ASC) {
 360     case PSW_ASC_PRIMARY:
 361         return MMU_PRIMARY_IDX;
 362     case PSW_ASC_SECONDARY:
 363         return MMU_SECONDARY_IDX;
 364     case PSW_ASC_HOME:
 365         return MMU_HOME_IDX;
 366     case PSW_ASC_ACCREG:
 367         /* Fallthrough: access register mode is not yet supported */
 368     default:
 369         abort();
 370     }
 371 #endif
 372 }
 373
 374 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 375                                         target_ulong *cs_base, uint32_t *flags)
 376 {
 377     *pc = env->psw.addr;
 378     *cs_base = env->ex_value;
 379     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 380     if (env->cregs[0] & CR0_AFP) {
 381         *flags |= FLAG_MASK_AFP;
 382     }
 383     if (env->cregs[0] & CR0_VECTOR) {
 384         *flags |= FLAG_MASK_VECTOR;
 385     }
 386 }
 387
 388 /* PER bits from control register 9 */
 389 #define PER_CR9_EVENT_BRANCH           0x80000000
 390 #define PER_CR9_EVENT_IFETCH           0x40000000
 391 #define PER_CR9_EVENT_STORE            0x20000000
 392 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 393 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 394 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 395 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 396
 397 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 398 #define PER_CODE_EVENT_BRANCH          0x8000
 399 #define PER_CODE_EVENT_IFETCH          0x4000
 400 #define PER_CODE_EVENT_STORE           0x2000
 401 #define PER_CODE_EVENT_STORE_REAL      0x0800
 402 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 403
 404 #define EXCP_EXT 1 /* external interrupt */
 405 #define EXCP_SVC 2 /* supervisor call (syscall) */
 406 #define EXCP_PGM 3 /* program interruption */
 407 #define EXCP_RESTART 4 /* restart interrupt */
 408 #define EXCP_STOP 5 /* stop interrupt */
 409 #define EXCP_IO  7 /* I/O interrupt */
 410 #define EXCP_MCHK 8 /* machine check */
 411
 412 #define INTERRUPT_EXT_CPU_TIMER          (1 << 3)
 413 #define INTERRUPT_EXT_CLOCK_COMPARATOR   (1 << 4)
 414 #define INTERRUPT_EXTERNAL_CALL          (1 << 5)
 415 #define INTERRUPT_EMERGENCY_SIGNAL       (1 << 6)
 416 #define INTERRUPT_RESTART                (1 << 7)
 417 #define INTERRUPT_STOP                   (1 << 8)
 418
 419 /* Program Status Word.  */
 420 #define S390_PSWM_REGNUM 0
 421 #define S390_PSWA_REGNUM 1
 422 /* General Purpose Registers.  */
 423 #define S390_R0_REGNUM 2
 424 #define S390_R1_REGNUM 3
 425 #define S390_R2_REGNUM 4
 426 #define S390_R3_REGNUM 5
 427 #define S390_R4_REGNUM 6
 428 #define S390_R5_REGNUM 7
 429 #define S390_R6_REGNUM 8
 430 #define S390_R7_REGNUM 9
 431 #define S390_R8_REGNUM 10
 432 #define S390_R9_REGNUM 11
 433 #define S390_R10_REGNUM 12
 434 #define S390_R11_REGNUM 13
 435 #define S390_R12_REGNUM 14
 436 #define S390_R13_REGNUM 15
 437 #define S390_R14_REGNUM 16
 438 #define S390_R15_REGNUM 17
 439 /* Total Core Registers. */
 440 #define S390_NUM_CORE_REGS 18
 441
 442 static inline void setcc(S390CPU *cpu, uint64_t cc)
 443 {
 444     CPUS390XState *env = &cpu->env;
 445
 446     env->psw.mask &= ~(3ull << 44);
 447     env->psw.mask |= (cc & 3) << 44;
 448     env->cc_op = cc;
 449 }
 450
 451 /* STSI */
 452 #define STSI_R0_FC_MASK         0x00000000f0000000ULL
 453 #define STSI_R0_FC_CURRENT      0x0000000000000000ULL
 454 #define STSI_R0_FC_LEVEL_1      0x0000000010000000ULL
 455 #define STSI_R0_FC_LEVEL_2      0x0000000020000000ULL
 456 #define STSI_R0_FC_LEVEL_3      0x0000000030000000ULL
 457 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 458 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 459 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 460 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 461
 462 /* Basic Machine Configuration */
 463 typedef struct SysIB_111 {
 464     uint8_t  res1[32];
 465     uint8_t  manuf[16];
 466     uint8_t  type[4];
 467     uint8_t  res2[12];
 468     uint8_t  model[16];
 469     uint8_t  sequence[16];
 470     uint8_t  plant[4];
 471     uint8_t  res3[3996];
 472 } SysIB_111;
 473 QEMU_BUILD_BUG_ON(sizeof(SysIB_111) != 4096);
 474
 475 /* Basic Machine CPU */
 476 typedef struct SysIB_121 {
 477     uint8_t  res1[80];
 478     uint8_t  sequence[16];
 479     uint8_t  plant[4];
 480     uint8_t  res2[2];
 481     uint16_t cpu_addr;
 482     uint8_t  res3[3992];
 483 } SysIB_121;
 484 QEMU_BUILD_BUG_ON(sizeof(SysIB_121) != 4096);
 485
 486 /* Basic Machine CPUs */
 487 typedef struct SysIB_122 {
 488     uint8_t res1[32];
 489     uint32_t capability;
 490     uint16_t total_cpus;
 491     uint16_t conf_cpus;
 492     uint16_t standby_cpus;
 493     uint16_t reserved_cpus;
 494     uint16_t adjustments[2026];
 495 } SysIB_122;
 496 QEMU_BUILD_BUG_ON(sizeof(SysIB_122) != 4096);
 497
 498 /* LPAR CPU */
 499 typedef struct SysIB_221 {
 500     uint8_t  res1[80];
 501     uint8_t  sequence[16];
 502     uint8_t  plant[4];
 503     uint16_t cpu_id;
 504     uint16_t cpu_addr;
 505     uint8_t  res3[3992];
 506 } SysIB_221;
 507 QEMU_BUILD_BUG_ON(sizeof(SysIB_221) != 4096);
 508
 509 /* LPAR CPUs */
 510 typedef struct SysIB_222 {
 511     uint8_t  res1[32];
 512     uint16_t lpar_num;
 513     uint8_t  res2;
 514     uint8_t  lcpuc;
 515     uint16_t total_cpus;
 516     uint16_t conf_cpus;
 517     uint16_t standby_cpus;
 518     uint16_t reserved_cpus;
 519     uint8_t  name[8];
 520     uint32_t caf;
 521     uint8_t  res3[16];
 522     uint16_t dedicated_cpus;
 523     uint16_t shared_cpus;
 524     uint8_t  res4[4020];
 525 } SysIB_222;
 526 QEMU_BUILD_BUG_ON(sizeof(SysIB_222) != 4096);
 527
 528 /* VM CPUs */
 529 typedef struct SysIB_322 {
 530     uint8_t  res1[31];
 531     uint8_t  count;
 532     struct {
 533         uint8_t  res2[4];
 534         uint16_t total_cpus;
 535         uint16_t conf_cpus;
 536         uint16_t standby_cpus;
 537         uint16_t reserved_cpus;
 538         uint8_t  name[8];
 539         uint32_t caf;
 540         uint8_t  cpi[16];
 541         uint8_t res5[3];
 542         uint8_t ext_name_encoding;
 543         uint32_t res3;
 544         uint8_t uuid[16];
 545     } vm[8];
 546     uint8_t res4[1504];
 547     uint8_t ext_names[8][256];
 548 } SysIB_322;
 549 QEMU_BUILD_BUG_ON(sizeof(SysIB_322) != 4096);
 550
 551 typedef union SysIB {
 552     SysIB_111 sysib_111;
 553     SysIB_121 sysib_121;
 554     SysIB_122 sysib_122;
 555     SysIB_221 sysib_221;
 556     SysIB_222 sysib_222;
 557     SysIB_322 sysib_322;
 558 } SysIB;
 559 QEMU_BUILD_BUG_ON(sizeof(SysIB) != 4096);
 560
 561 /* MMU defines */
 562 #define ASCE_ORIGIN           (~0xfffULL) /* segment table origin             */
 563 #define ASCE_SUBSPACE         0x200       /* subspace group control           */
 564 #define ASCE_PRIVATE_SPACE    0x100       /* private space control            */
 565 #define ASCE_ALT_EVENT        0x80        /* storage alteration event control */
 566 #define ASCE_SPACE_SWITCH     0x40        /* space switch event               */
 567 #define ASCE_REAL_SPACE       0x20        /* real space control               */
 568 #define ASCE_TYPE_MASK        0x0c        /* asce table type mask             */
 569 #define ASCE_TYPE_REGION1     0x0c        /* region first table type          */
 570 #define ASCE_TYPE_REGION2     0x08        /* region second table type         */
 571 #define ASCE_TYPE_REGION3     0x04        /* region third table type          */
 572 #define ASCE_TYPE_SEGMENT     0x00        /* segment table type               */
 573 #define ASCE_TABLE_LENGTH     0x03        /* region table length              */
 574
 575 #define REGION_ENTRY_ORIGIN         0xfffffffffffff000ULL
 576 #define REGION_ENTRY_P              0x0000000000000200ULL
 577 #define REGION_ENTRY_TF             0x00000000000000c0ULL
 578 #define REGION_ENTRY_I              0x0000000000000020ULL
 579 #define REGION_ENTRY_TT             0x000000000000000cULL
 580 #define REGION_ENTRY_TL             0x0000000000000003ULL
 581
 582 #define REGION_ENTRY_TT_REGION1     0x000000000000000cULL
 583 #define REGION_ENTRY_TT_REGION2     0x0000000000000008ULL
 584 #define REGION_ENTRY_TT_REGION3     0x0000000000000004ULL
 585
 586 #define REGION3_ENTRY_RFAA          0xffffffff80000000ULL
 587 #define REGION3_ENTRY_AV            0x0000000000010000ULL
 588 #define REGION3_ENTRY_ACC           0x000000000000f000ULL
 589 #define REGION3_ENTRY_F             0x0000000000000800ULL
 590 #define REGION3_ENTRY_FC            0x0000000000000400ULL
 591 #define REGION3_ENTRY_IEP           0x0000000000000100ULL
 592 #define REGION3_ENTRY_CR            0x0000000000000010ULL
 593
 594 #define SEGMENT_ENTRY_ORIGIN        0xfffffffffffff800ULL
 595 #define SEGMENT_ENTRY_SFAA          0xfffffffffff00000ULL
 596 #define SEGMENT_ENTRY_AV            0x0000000000010000ULL
 597 #define SEGMENT_ENTRY_ACC           0x000000000000f000ULL
 598 #define SEGMENT_ENTRY_F             0x0000000000000800ULL
 599 #define SEGMENT_ENTRY_FC            0x0000000000000400ULL
 600 #define SEGMENT_ENTRY_P             0x0000000000000200ULL
 601 #define SEGMENT_ENTRY_IEP           0x0000000000000100ULL
 602 #define SEGMENT_ENTRY_I             0x0000000000000020ULL
 603 #define SEGMENT_ENTRY_CS            0x0000000000000010ULL
 604 #define SEGMENT_ENTRY_TT            0x000000000000000cULL
 605
 606 #define SEGMENT_ENTRY_TT_SEGMENT    0x0000000000000000ULL
 607
 608 #define PAGE_ENTRY_0                0x0000000000000800ULL
 609 #define PAGE_ENTRY_I                0x0000000000000400ULL
 610 #define PAGE_ENTRY_P                0x0000000000000200ULL
 611 #define PAGE_ENTRY_IEP              0x0000000000000100ULL
 612
 613 #define VADDR_REGION1_TX_MASK       0xffe0000000000000ULL
 614 #define VADDR_REGION2_TX_MASK       0x001ffc0000000000ULL
 615 #define VADDR_REGION3_TX_MASK       0x000003ff80000000ULL
 616 #define VADDR_SEGMENT_TX_MASK       0x000000007ff00000ULL
 617 #define VADDR_PAGE_TX_MASK          0x00000000000ff000ULL
 618
 619 #define VADDR_REGION1_TX(vaddr)     (((vaddr) & VADDR_REGION1_TX_MASK) >> 53)
 620 #define VADDR_REGION2_TX(vaddr)     (((vaddr) & VADDR_REGION2_TX_MASK) >> 42)
 621 #define VADDR_REGION3_TX(vaddr)     (((vaddr) & VADDR_REGION3_TX_MASK) >> 31)
 622 #define VADDR_SEGMENT_TX(vaddr)     (((vaddr) & VADDR_SEGMENT_TX_MASK) >> 20)
 623 #define VADDR_PAGE_TX(vaddr)        (((vaddr) & VADDR_PAGE_TX_MASK) >> 12)
 624
 625 #define VADDR_REGION1_TL(vaddr)     (((vaddr) & 0xc000000000000000ULL) >> 62)
 626 #define VADDR_REGION2_TL(vaddr)     (((vaddr) & 0x0018000000000000ULL) >> 51)
 627 #define VADDR_REGION3_TL(vaddr)     (((vaddr) & 0x0000030000000000ULL) >> 40)
 628 #define VADDR_SEGMENT_TL(vaddr)     (((vaddr) & 0x0000000060000000ULL) >> 29)
 629
 630 #define SK_C                    (0x1 << 1)
 631 #define SK_R                    (0x1 << 2)
 632 #define SK_F                    (0x1 << 3)
 633 #define SK_ACC_MASK             (0xf << 4)
 634
 635 /* SIGP order codes */
 636 #define SIGP_SENSE             0x01
 637 #define SIGP_EXTERNAL_CALL     0x02
 638 #define SIGP_EMERGENCY         0x03
 639 #define SIGP_START             0x04
 640 #define SIGP_STOP              0x05
 641 #define SIGP_RESTART           0x06
 642 #define SIGP_STOP_STORE_STATUS 0x09
 643 #define SIGP_INITIAL_CPU_RESET 0x0b
 644 #define SIGP_CPU_RESET         0x0c
 645 #define SIGP_SET_PREFIX        0x0d
 646 #define SIGP_STORE_STATUS_ADDR 0x0e
 647 #define SIGP_SET_ARCH          0x12
 648 #define SIGP_COND_EMERGENCY    0x13
 649 #define SIGP_SENSE_RUNNING     0x15
 650 #define SIGP_STORE_ADTL_STATUS 0x17
 651
 652 /* SIGP condition codes */
 653 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
 654 #define SIGP_CC_STATUS_STORED       1
 655 #define SIGP_CC_BUSY                2
 656 #define SIGP_CC_NOT_OPERATIONAL     3
 657
 658 /* SIGP status bits */
 659 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 660 #define SIGP_STAT_NOT_RUNNING       0x00000400UL
 661 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 662 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 663 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 664 #define SIGP_STAT_STOPPED           0x00000040UL
 665 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 666 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 667 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 668 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 669 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 670
 671 /* SIGP SET ARCHITECTURE modes */
 672 #define SIGP_MODE_ESA_S390 0
 673 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
 674 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
 675
 676 /* SIGP order code mask corresponding to bit positions 56-63 */
 677 #define SIGP_ORDER_MASK 0x000000ff
 678
 679 /* machine check interruption code */
 680
 681 /* subclasses */
 682 #define MCIC_SC_SD 0x8000000000000000ULL
 683 #define MCIC_SC_PD 0x4000000000000000ULL
 684 #define MCIC_SC_SR 0x2000000000000000ULL
 685 #define MCIC_SC_CD 0x0800000000000000ULL
 686 #define MCIC_SC_ED 0x0400000000000000ULL
 687 #define MCIC_SC_DG 0x0100000000000000ULL
 688 #define MCIC_SC_W  0x0080000000000000ULL
 689 #define MCIC_SC_CP 0x0040000000000000ULL
 690 #define MCIC_SC_SP 0x0020000000000000ULL
 691 #define MCIC_SC_CK 0x0010000000000000ULL
 692
 693 /* subclass modifiers */
 694 #define MCIC_SCM_B  0x0002000000000000ULL
 695 #define MCIC_SCM_DA 0x0000000020000000ULL
 696 #define MCIC_SCM_AP 0x0000000000080000ULL
 697
 698 /* storage errors */
 699 #define MCIC_SE_SE 0x0000800000000000ULL
 700 #define MCIC_SE_SC 0x0000400000000000ULL
 701 #define MCIC_SE_KE 0x0000200000000000ULL
 702 #define MCIC_SE_DS 0x0000100000000000ULL
 703 #define MCIC_SE_IE 0x0000000080000000ULL
 704
 705 /* validity bits */
 706 #define MCIC_VB_WP 0x0000080000000000ULL
 707 #define MCIC_VB_MS 0x0000040000000000ULL
 708 #define MCIC_VB_PM 0x0000020000000000ULL
 709 #define MCIC_VB_IA 0x0000010000000000ULL
 710 #define MCIC_VB_FA 0x0000008000000000ULL
 711 #define MCIC_VB_VR 0x0000004000000000ULL
 712 #define MCIC_VB_EC 0x0000002000000000ULL
 713 #define MCIC_VB_FP 0x0000001000000000ULL
 714 #define MCIC_VB_GR 0x0000000800000000ULL
 715 #define MCIC_VB_CR 0x0000000400000000ULL
 716 #define MCIC_VB_ST 0x0000000100000000ULL
 717 #define MCIC_VB_AR 0x0000000040000000ULL
 718 #define MCIC_VB_GS 0x0000000008000000ULL
 719 #define MCIC_VB_PR 0x0000000000200000ULL
 720 #define MCIC_VB_FC 0x0000000000100000ULL
 721 #define MCIC_VB_CT 0x0000000000020000ULL
 722 #define MCIC_VB_CC 0x0000000000010000ULL
 723
 724 static inline uint64_t s390_build_validity_mcic(void)
 725 {
 726     uint64_t mcic;
 727
 728     /*
 729      * Indicate all validity bits (no damage) only. Other bits have to be
 730      * added by the caller. (storage errors, subclasses and subclass modifiers)
 731      */
 732     mcic = MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
 733            MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
 734            MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
 735     if (s390_has_feat(S390_FEAT_VECTOR)) {
 736         mcic |= MCIC_VB_VR;
 737     }
 738     if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
 739         mcic |= MCIC_VB_GS;
 740     }
 741     return mcic;
 742 }
 743
 744 static inline void s390_do_cpu_full_reset(CPUState *cs, run_on_cpu_data arg)
 745 {
 746     cpu_reset(cs);
 747 }
 748
 749 static inline void s390_do_cpu_reset(CPUState *cs, run_on_cpu_data arg)
 750 {
 751     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 752
 753     scc->reset(cs, S390_CPU_RESET_NORMAL);
 754 }
 755
 756 static inline void s390_do_cpu_initial_reset(CPUState *cs, run_on_cpu_data arg)
 757 {
 758     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 759
 760     scc->reset(cs, S390_CPU_RESET_INITIAL);
 761 }
 762
 763 static inline void s390_do_cpu_load_normal(CPUState *cs, run_on_cpu_data arg)
 764 {
 765     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 766
 767     scc->load_normal(cs);
 768 }
 769
 770
 771 /* cpu.c */
 772 void s390_crypto_reset(void);
 773 int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
 774 void s390_set_max_pagesize(uint64_t pagesize, Error **errp);
 775 void s390_cmma_reset(void);
 776 void s390_enable_css_support(S390CPU *cpu);
 777 void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
 778 int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
 779                                 int vq, bool assign);
 780 #ifndef CONFIG_USER_ONLY
 781 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 782 #else
 783 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 784 {
 785     return 0;
 786 }
 787 #endif /* CONFIG_USER_ONLY */
 788 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 789 {
 790     return cpu->env.cpu_state;
 791 }
 792
 793
 794 /* cpu_models.c */
 795 void s390_cpu_list(void);
 796 #define cpu_list s390_cpu_list
 797 void s390_set_qemu_cpu_model(uint16_t type, uint8_t gen, uint8_t ec_ga,
 798                              const S390FeatInit feat_init);
 799
 800
 801 /* helper.c */
 802 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
 803 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
 804 #define CPU_RESOLVING_TYPE TYPE_S390_CPU
 805
 806 /* you can call this signal handler from your SIGBUS and SIGSEGV
 807    signal handlers to inform the virtual CPU of exceptions. non zero
 808    is returned if the signal was handled by the virtual CPU.  */
 809 int cpu_s390x_signal_handler(int host_signum, void *pinfo, void *puc);
 810 #define cpu_signal_handler cpu_s390x_signal_handler
 811
 812
 813 /* interrupt.c */
 814 void s390_crw_mchk(void);
 815 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 816                        uint32_t io_int_parm, uint32_t io_int_word);
 817 #define RA_IGNORED                  0
 818 void s390_program_interrupt(CPUS390XState *env, uint32_t code, uintptr_t ra);
 819 /* service interrupts are floating therefore we must not pass an cpustate */
 820 void s390_sclp_extint(uint32_t parm);
 821
 822 /* mmu_helper.c */
 823 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
 824                          int len, bool is_write);
 825 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
 826         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
 827 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
 828         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
 829 #define s390_cpu_virt_mem_check_read(cpu, laddr, ar, len)   \
 830         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, false)
 831 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
 832         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
 833 void s390_cpu_virt_mem_handle_exc(S390CPU *cpu, uintptr_t ra);
 834 int s390_cpu_pv_mem_rw(S390CPU *cpu, unsigned int offset, void *hostbuf,
 835                        int len, bool is_write);
 836 #define s390_cpu_pv_mem_read(cpu, offset, dest, len)    \
 837         s390_cpu_pv_mem_rw(cpu, offset, dest, len, false)
 838 #define s390_cpu_pv_mem_write(cpu, offset, dest, len)       \
 839         s390_cpu_pv_mem_rw(cpu, offset, dest, len, true)
 840
 841 /* sigp.c */
 842 int s390_cpu_restart(S390CPU *cpu);
 843 void s390_init_sigp(void);
 844
 845
 846 /* outside of target/s390x/ */
 847 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 848
 849 typedef CPUS390XState CPUArchState;
 850 typedef S390CPU ArchCPU;
 851
 852 #include "exec/cpu-all.h"
 853
 854 #endif