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