arch/s390/include/asm/kvm_host.h

   1 /*
   2  * definition for kernel virtual machines on s390
   3  *
   4  * Copyright IBM Corp. 2008, 2009
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License (version 2 only)
   8  * as published by the Free Software Foundation.
   9  *
  10  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  11  */
  12
  13
  14 #ifndef ASM_KVM_HOST_H
  15 #define ASM_KVM_HOST_H
  16
  17 #include <linux/types.h>
  18 #include <linux/hrtimer.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/kvm_types.h>
  21 #include <linux/kvm_host.h>
  22 #include <linux/kvm.h>
  23 #include <linux/seqlock.h>
  24 #include <asm/debug.h>
  25 #include <asm/cpu.h>
  26 #include <asm/fpu/api.h>
  27 #include <asm/isc.h>
  28
  29 #define KVM_S390_BSCA_CPU_SLOTS 64
  30 #define KVM_S390_ESCA_CPU_SLOTS 248
  31 #define KVM_MAX_VCPUS KVM_S390_ESCA_CPU_SLOTS
  32 #define KVM_USER_MEM_SLOTS 32
  33
  34 /*
  35  * These seem to be used for allocating ->chip in the routing table,
  36  * which we don't use. 4096 is an out-of-thin-air value. If we need
  37  * to look at ->chip later on, we'll need to revisit this.
  38  */
  39 #define KVM_NR_IRQCHIPS 1
  40 #define KVM_IRQCHIP_NUM_PINS 4096
  41 #define KVM_HALT_POLL_NS_DEFAULT 80000
  42
  43 /* s390-specific vcpu->requests bit members */
  44 #define KVM_REQ_ENABLE_IBS         8
  45 #define KVM_REQ_DISABLE_IBS        9
  46
  47 #define SIGP_CTRL_C             0x80
  48 #define SIGP_CTRL_SCN_MASK      0x3f
  49
  50 union bsca_sigp_ctrl {
  51         __u8 value;
  52         struct {
  53                 __u8 c : 1;
  54                 __u8 r : 1;
  55                 __u8 scn : 6;
  56         };
  57 } __packed;
  58
  59 union esca_sigp_ctrl {
  60         __u16 value;
  61         struct {
  62                 __u8 c : 1;
  63                 __u8 reserved: 7;
  64                 __u8 scn;
  65         };
  66 } __packed;
  67
  68 struct esca_entry {
  69         union esca_sigp_ctrl sigp_ctrl;
  70         __u16   reserved1[3];
  71         __u64   sda;
  72         __u64   reserved2[6];
  73 } __packed;
  74
  75 struct bsca_entry {
  76         __u8    reserved0;
  77         union bsca_sigp_ctrl    sigp_ctrl;
  78         __u16   reserved[3];
  79         __u64   sda;
  80         __u64   reserved2[2];
  81 } __attribute__((packed));
  82
  83 union ipte_control {
  84         unsigned long val;
  85         struct {
  86                 unsigned long k  : 1;
  87                 unsigned long kh : 31;
  88                 unsigned long kg : 32;
  89         };
  90 };
  91
  92 struct bsca_block {
  93         union ipte_control ipte_control;
  94         __u64   reserved[5];
  95         __u64   mcn;
  96         __u64   reserved2;
  97         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
  98 } __attribute__((packed));
  99
 100 struct esca_block {
 101         union ipte_control ipte_control;
 102         __u64   reserved1[7];
 103         __u64   mcn[4];
 104         __u64   reserved2[20];
 105         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 106 } __packed;
 107
 108 #define CPUSTAT_STOPPED    0x80000000
 109 #define CPUSTAT_WAIT       0x10000000
 110 #define CPUSTAT_ECALL_PEND 0x08000000
 111 #define CPUSTAT_STOP_INT   0x04000000
 112 #define CPUSTAT_IO_INT     0x02000000
 113 #define CPUSTAT_EXT_INT    0x01000000
 114 #define CPUSTAT_RUNNING    0x00800000
 115 #define CPUSTAT_RETAINED   0x00400000
 116 #define CPUSTAT_TIMING_SUB 0x00020000
 117 #define CPUSTAT_SIE_SUB    0x00010000
 118 #define CPUSTAT_RRF        0x00008000
 119 #define CPUSTAT_SLSV       0x00004000
 120 #define CPUSTAT_SLSR       0x00002000
 121 #define CPUSTAT_ZARCH      0x00000800
 122 #define CPUSTAT_MCDS       0x00000100
 123 #define CPUSTAT_SM         0x00000080
 124 #define CPUSTAT_IBS        0x00000040
 125 #define CPUSTAT_GED2       0x00000010
 126 #define CPUSTAT_G          0x00000008
 127 #define CPUSTAT_GED        0x00000004
 128 #define CPUSTAT_J          0x00000002
 129 #define CPUSTAT_P          0x00000001
 130
 131 struct kvm_s390_sie_block {
 132         atomic_t cpuflags;              /* 0x0000 */
 133         __u32 : 1;                      /* 0x0004 */
 134         __u32 prefix : 18;
 135         __u32 : 1;
 136         __u32 ibc : 12;
 137         __u8    reserved08[4];          /* 0x0008 */
 138 #define PROG_IN_SIE (1<<0)
 139         __u32   prog0c;                 /* 0x000c */
 140         __u8    reserved10[16];         /* 0x0010 */
 141 #define PROG_BLOCK_SIE  (1<<0)
 142 #define PROG_REQUEST    (1<<1)
 143         atomic_t prog20;                /* 0x0020 */
 144         __u8    reserved24[4];          /* 0x0024 */
 145         __u64   cputm;                  /* 0x0028 */
 146         __u64   ckc;                    /* 0x0030 */
 147         __u64   epoch;                  /* 0x0038 */
 148         __u8    reserved40[4];          /* 0x0040 */
 149 #define LCTL_CR0        0x8000
 150 #define LCTL_CR6        0x0200
 151 #define LCTL_CR9        0x0040
 152 #define LCTL_CR10       0x0020
 153 #define LCTL_CR11       0x0010
 154 #define LCTL_CR14       0x0002
 155         __u16   lctl;                   /* 0x0044 */
 156         __s16   icpua;                  /* 0x0046 */
 157 #define ICTL_PINT       0x20000000
 158 #define ICTL_LPSW       0x00400000
 159 #define ICTL_STCTL      0x00040000
 160 #define ICTL_ISKE       0x00004000
 161 #define ICTL_SSKE       0x00002000
 162 #define ICTL_RRBE       0x00001000
 163 #define ICTL_TPROT      0x00000200
 164         __u32   ictl;                   /* 0x0048 */
 165         __u32   eca;                    /* 0x004c */
 166 #define ICPT_INST       0x04
 167 #define ICPT_PROGI      0x08
 168 #define ICPT_INSTPROGI  0x0C
 169 #define ICPT_OPEREXC    0x2C
 170 #define ICPT_PARTEXEC   0x38
 171 #define ICPT_IOINST     0x40
 172         __u8    icptcode;               /* 0x0050 */
 173         __u8    icptstatus;             /* 0x0051 */
 174         __u16   ihcpu;                  /* 0x0052 */
 175         __u8    reserved54[2];          /* 0x0054 */
 176         __u16   ipa;                    /* 0x0056 */
 177         __u32   ipb;                    /* 0x0058 */
 178         __u32   scaoh;                  /* 0x005c */
 179         __u8    reserved60;             /* 0x0060 */
 180         __u8    ecb;                    /* 0x0061 */
 181         __u8    ecb2;                   /* 0x0062 */
 182 #define ECB3_AES 0x04
 183 #define ECB3_DEA 0x08
 184         __u8    ecb3;                   /* 0x0063 */
 185         __u32   scaol;                  /* 0x0064 */
 186         __u8    reserved68[4];          /* 0x0068 */
 187         __u32   todpr;                  /* 0x006c */
 188         __u8    reserved70[32];         /* 0x0070 */
 189         psw_t   gpsw;                   /* 0x0090 */
 190         __u64   gg14;                   /* 0x00a0 */
 191         __u64   gg15;                   /* 0x00a8 */
 192         __u8    reservedb0[20];         /* 0x00b0 */
 193         __u16   extcpuaddr;             /* 0x00c4 */
 194         __u16   eic;                    /* 0x00c6 */
 195         __u32   reservedc8;             /* 0x00c8 */
 196         __u16   pgmilc;                 /* 0x00cc */
 197         __u16   iprcc;                  /* 0x00ce */
 198         __u32   dxc;                    /* 0x00d0 */
 199         __u16   mcn;                    /* 0x00d4 */
 200         __u8    perc;                   /* 0x00d6 */
 201         __u8    peratmid;               /* 0x00d7 */
 202         __u64   peraddr;                /* 0x00d8 */
 203         __u8    eai;                    /* 0x00e0 */
 204         __u8    peraid;                 /* 0x00e1 */
 205         __u8    oai;                    /* 0x00e2 */
 206         __u8    armid;                  /* 0x00e3 */
 207         __u8    reservede4[4];          /* 0x00e4 */
 208         __u64   tecmc;                  /* 0x00e8 */
 209         __u8    reservedf0[12];         /* 0x00f0 */
 210 #define CRYCB_FORMAT1 0x00000001
 211 #define CRYCB_FORMAT2 0x00000003
 212         __u32   crycbd;                 /* 0x00fc */
 213         __u64   gcr[16];                /* 0x0100 */
 214         __u64   gbea;                   /* 0x0180 */
 215         __u8    reserved188[24];        /* 0x0188 */
 216         __u32   fac;                    /* 0x01a0 */
 217         __u8    reserved1a4[20];        /* 0x01a4 */
 218         __u64   cbrlo;                  /* 0x01b8 */
 219         __u8    reserved1c0[8];         /* 0x01c0 */
 220         __u32   ecd;                    /* 0x01c8 */
 221         __u8    reserved1cc[18];        /* 0x01cc */
 222         __u64   pp;                     /* 0x01de */
 223         __u8    reserved1e6[2];         /* 0x01e6 */
 224         __u64   itdba;                  /* 0x01e8 */
 225         __u64   riccbd;                 /* 0x01f0 */
 226         __u8    reserved1f8[8];         /* 0x01f8 */
 227 } __attribute__((packed));
 228
 229 struct kvm_s390_itdb {
 230         __u8    data[256];
 231 } __packed;
 232
 233 struct sie_page {
 234         struct kvm_s390_sie_block sie_block;
 235         __u8 reserved200[1024];         /* 0x0200 */
 236         struct kvm_s390_itdb itdb;      /* 0x0600 */
 237         __u8 reserved700[2304];         /* 0x0700 */
 238 } __packed;
 239
 240 struct kvm_vcpu_stat {
 241         u32 exit_userspace;
 242         u32 exit_null;
 243         u32 exit_external_request;
 244         u32 exit_external_interrupt;
 245         u32 exit_stop_request;
 246         u32 exit_validity;
 247         u32 exit_instruction;
 248         u32 halt_successful_poll;
 249         u32 halt_attempted_poll;
 250         u32 halt_poll_invalid;
 251         u32 halt_wakeup;
 252         u32 instruction_lctl;
 253         u32 instruction_lctlg;
 254         u32 instruction_stctl;
 255         u32 instruction_stctg;
 256         u32 exit_program_interruption;
 257         u32 exit_instr_and_program;
 258         u32 deliver_external_call;
 259         u32 deliver_emergency_signal;
 260         u32 deliver_service_signal;
 261         u32 deliver_virtio_interrupt;
 262         u32 deliver_stop_signal;
 263         u32 deliver_prefix_signal;
 264         u32 deliver_restart_signal;
 265         u32 deliver_program_int;
 266         u32 deliver_io_int;
 267         u32 exit_wait_state;
 268         u32 instruction_pfmf;
 269         u32 instruction_stidp;
 270         u32 instruction_spx;
 271         u32 instruction_stpx;
 272         u32 instruction_stap;
 273         u32 instruction_storage_key;
 274         u32 instruction_ipte_interlock;
 275         u32 instruction_stsch;
 276         u32 instruction_chsc;
 277         u32 instruction_stsi;
 278         u32 instruction_stfl;
 279         u32 instruction_tprot;
 280         u32 instruction_essa;
 281         u32 instruction_sigp_sense;
 282         u32 instruction_sigp_sense_running;
 283         u32 instruction_sigp_external_call;
 284         u32 instruction_sigp_emergency;
 285         u32 instruction_sigp_cond_emergency;
 286         u32 instruction_sigp_start;
 287         u32 instruction_sigp_stop;
 288         u32 instruction_sigp_stop_store_status;
 289         u32 instruction_sigp_store_status;
 290         u32 instruction_sigp_store_adtl_status;
 291         u32 instruction_sigp_arch;
 292         u32 instruction_sigp_prefix;
 293         u32 instruction_sigp_restart;
 294         u32 instruction_sigp_init_cpu_reset;
 295         u32 instruction_sigp_cpu_reset;
 296         u32 instruction_sigp_unknown;
 297         u32 diagnose_10;
 298         u32 diagnose_44;
 299         u32 diagnose_9c;
 300         u32 diagnose_258;
 301         u32 diagnose_308;
 302         u32 diagnose_500;
 303 };
 304
 305 #define PGM_OPERATION                   0x01
 306 #define PGM_PRIVILEGED_OP               0x02
 307 #define PGM_EXECUTE                     0x03
 308 #define PGM_PROTECTION                  0x04
 309 #define PGM_ADDRESSING                  0x05
 310 #define PGM_SPECIFICATION               0x06
 311 #define PGM_DATA                        0x07
 312 #define PGM_FIXED_POINT_OVERFLOW        0x08
 313 #define PGM_FIXED_POINT_DIVIDE          0x09
 314 #define PGM_DECIMAL_OVERFLOW            0x0a
 315 #define PGM_DECIMAL_DIVIDE              0x0b
 316 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 317 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 318 #define PGM_HFP_SIGNIFICANCE            0x0e
 319 #define PGM_HFP_DIVIDE                  0x0f
 320 #define PGM_SEGMENT_TRANSLATION         0x10
 321 #define PGM_PAGE_TRANSLATION            0x11
 322 #define PGM_TRANSLATION_SPEC            0x12
 323 #define PGM_SPECIAL_OPERATION           0x13
 324 #define PGM_OPERAND                     0x15
 325 #define PGM_TRACE_TABEL                 0x16
 326 #define PGM_VECTOR_PROCESSING           0x1b
 327 #define PGM_SPACE_SWITCH                0x1c
 328 #define PGM_HFP_SQUARE_ROOT             0x1d
 329 #define PGM_PC_TRANSLATION_SPEC         0x1f
 330 #define PGM_AFX_TRANSLATION             0x20
 331 #define PGM_ASX_TRANSLATION             0x21
 332 #define PGM_LX_TRANSLATION              0x22
 333 #define PGM_EX_TRANSLATION              0x23
 334 #define PGM_PRIMARY_AUTHORITY           0x24
 335 #define PGM_SECONDARY_AUTHORITY         0x25
 336 #define PGM_LFX_TRANSLATION             0x26
 337 #define PGM_LSX_TRANSLATION             0x27
 338 #define PGM_ALET_SPECIFICATION          0x28
 339 #define PGM_ALEN_TRANSLATION            0x29
 340 #define PGM_ALE_SEQUENCE                0x2a
 341 #define PGM_ASTE_VALIDITY               0x2b
 342 #define PGM_ASTE_SEQUENCE               0x2c
 343 #define PGM_EXTENDED_AUTHORITY          0x2d
 344 #define PGM_LSTE_SEQUENCE               0x2e
 345 #define PGM_ASTE_INSTANCE               0x2f
 346 #define PGM_STACK_FULL                  0x30
 347 #define PGM_STACK_EMPTY                 0x31
 348 #define PGM_STACK_SPECIFICATION         0x32
 349 #define PGM_STACK_TYPE                  0x33
 350 #define PGM_STACK_OPERATION             0x34
 351 #define PGM_ASCE_TYPE                   0x38
 352 #define PGM_REGION_FIRST_TRANS          0x39
 353 #define PGM_REGION_SECOND_TRANS         0x3a
 354 #define PGM_REGION_THIRD_TRANS          0x3b
 355 #define PGM_MONITOR                     0x40
 356 #define PGM_PER                         0x80
 357 #define PGM_CRYPTO_OPERATION            0x119
 358
 359 /* irq types in order of priority */
 360 enum irq_types {
 361         IRQ_PEND_MCHK_EX = 0,
 362         IRQ_PEND_SVC,
 363         IRQ_PEND_PROG,
 364         IRQ_PEND_MCHK_REP,
 365         IRQ_PEND_EXT_IRQ_KEY,
 366         IRQ_PEND_EXT_MALFUNC,
 367         IRQ_PEND_EXT_EMERGENCY,
 368         IRQ_PEND_EXT_EXTERNAL,
 369         IRQ_PEND_EXT_CLOCK_COMP,
 370         IRQ_PEND_EXT_CPU_TIMER,
 371         IRQ_PEND_EXT_TIMING,
 372         IRQ_PEND_EXT_SERVICE,
 373         IRQ_PEND_EXT_HOST,
 374         IRQ_PEND_PFAULT_INIT,
 375         IRQ_PEND_PFAULT_DONE,
 376         IRQ_PEND_VIRTIO,
 377         IRQ_PEND_IO_ISC_0,
 378         IRQ_PEND_IO_ISC_1,
 379         IRQ_PEND_IO_ISC_2,
 380         IRQ_PEND_IO_ISC_3,
 381         IRQ_PEND_IO_ISC_4,
 382         IRQ_PEND_IO_ISC_5,
 383         IRQ_PEND_IO_ISC_6,
 384         IRQ_PEND_IO_ISC_7,
 385         IRQ_PEND_SIGP_STOP,
 386         IRQ_PEND_RESTART,
 387         IRQ_PEND_SET_PREFIX,
 388         IRQ_PEND_COUNT
 389 };
 390
 391 /* We have 2M for virtio device descriptor pages. Smallest amount of
 392  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 393  */
 394 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 395
 396 /*
 397  * Repressible (non-floating) machine check interrupts
 398  * subclass bits in MCIC
 399  */
 400 #define MCHK_EXTD_BIT 58
 401 #define MCHK_DEGR_BIT 56
 402 #define MCHK_WARN_BIT 55
 403 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 404                        (1UL << MCHK_EXTD_BIT) | \
 405                        (1UL << MCHK_WARN_BIT))
 406
 407 /* Exigent machine check interrupts subclass bits in MCIC */
 408 #define MCHK_SD_BIT 63
 409 #define MCHK_PD_BIT 62
 410 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 411
 412 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 413                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 414                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 415                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 416                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 417                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 418                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 419                            (1UL << IRQ_PEND_EXT_HOST)       | \
 420                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 421                            (1UL << IRQ_PEND_VIRTIO)         | \
 422                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 423                            (1UL << IRQ_PEND_PFAULT_DONE))
 424
 425 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 426                           (1UL << IRQ_PEND_IO_ISC_1) | \
 427                           (1UL << IRQ_PEND_IO_ISC_2) | \
 428                           (1UL << IRQ_PEND_IO_ISC_3) | \
 429                           (1UL << IRQ_PEND_IO_ISC_4) | \
 430                           (1UL << IRQ_PEND_IO_ISC_5) | \
 431                           (1UL << IRQ_PEND_IO_ISC_6) | \
 432                           (1UL << IRQ_PEND_IO_ISC_7))
 433
 434 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 435                             (1UL << IRQ_PEND_MCHK_EX))
 436
 437 struct kvm_s390_interrupt_info {
 438         struct list_head list;
 439         u64     type;
 440         union {
 441                 struct kvm_s390_io_info io;
 442                 struct kvm_s390_ext_info ext;
 443                 struct kvm_s390_pgm_info pgm;
 444                 struct kvm_s390_emerg_info emerg;
 445                 struct kvm_s390_extcall_info extcall;
 446                 struct kvm_s390_prefix_info prefix;
 447                 struct kvm_s390_stop_info stop;
 448                 struct kvm_s390_mchk_info mchk;
 449         };
 450 };
 451
 452 struct kvm_s390_irq_payload {
 453         struct kvm_s390_io_info io;
 454         struct kvm_s390_ext_info ext;
 455         struct kvm_s390_pgm_info pgm;
 456         struct kvm_s390_emerg_info emerg;
 457         struct kvm_s390_extcall_info extcall;
 458         struct kvm_s390_prefix_info prefix;
 459         struct kvm_s390_stop_info stop;
 460         struct kvm_s390_mchk_info mchk;
 461 };
 462
 463 struct kvm_s390_local_interrupt {
 464         spinlock_t lock;
 465         struct kvm_s390_float_interrupt *float_int;
 466         struct swait_queue_head *wq;
 467         atomic_t *cpuflags;
 468         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 469         struct kvm_s390_irq_payload irq;
 470         unsigned long pending_irqs;
 471 };
 472
 473 #define FIRQ_LIST_IO_ISC_0 0
 474 #define FIRQ_LIST_IO_ISC_1 1
 475 #define FIRQ_LIST_IO_ISC_2 2
 476 #define FIRQ_LIST_IO_ISC_3 3
 477 #define FIRQ_LIST_IO_ISC_4 4
 478 #define FIRQ_LIST_IO_ISC_5 5
 479 #define FIRQ_LIST_IO_ISC_6 6
 480 #define FIRQ_LIST_IO_ISC_7 7
 481 #define FIRQ_LIST_PFAULT   8
 482 #define FIRQ_LIST_VIRTIO   9
 483 #define FIRQ_LIST_COUNT   10
 484 #define FIRQ_CNTR_IO       0
 485 #define FIRQ_CNTR_SERVICE  1
 486 #define FIRQ_CNTR_VIRTIO   2
 487 #define FIRQ_CNTR_PFAULT   3
 488 #define FIRQ_MAX_COUNT     4
 489
 490 struct kvm_s390_float_interrupt {
 491         unsigned long pending_irqs;
 492         spinlock_t lock;
 493         struct list_head lists[FIRQ_LIST_COUNT];
 494         int counters[FIRQ_MAX_COUNT];
 495         struct kvm_s390_mchk_info mchk;
 496         struct kvm_s390_ext_info srv_signal;
 497         int next_rr_cpu;
 498         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 499 };
 500
 501 struct kvm_hw_wp_info_arch {
 502         unsigned long addr;
 503         unsigned long phys_addr;
 504         int len;
 505         char *old_data;
 506 };
 507
 508 struct kvm_hw_bp_info_arch {
 509         unsigned long addr;
 510         int len;
 511 };
 512
 513 /*
 514  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 515  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 516  * arch/s390/include/uapi/asm/kvm.h
 517  */
 518 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 519
 520 #define guestdbg_enabled(vcpu) \
 521                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 522 #define guestdbg_sstep_enabled(vcpu) \
 523                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 524 #define guestdbg_hw_bp_enabled(vcpu) \
 525                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 526 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 527                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 528
 529 struct kvm_guestdbg_info_arch {
 530         unsigned long cr0;
 531         unsigned long cr9;
 532         unsigned long cr10;
 533         unsigned long cr11;
 534         struct kvm_hw_bp_info_arch *hw_bp_info;
 535         struct kvm_hw_wp_info_arch *hw_wp_info;
 536         int nr_hw_bp;
 537         int nr_hw_wp;
 538         unsigned long last_bp;
 539 };
 540
 541 struct kvm_vcpu_arch {
 542         struct kvm_s390_sie_block *sie_block;
 543         unsigned int      host_acrs[NUM_ACRS];
 544         struct fpu        host_fpregs;
 545         struct kvm_s390_local_interrupt local_int;
 546         struct hrtimer    ckc_timer;
 547         struct kvm_s390_pgm_info pgm;
 548         struct gmap *gmap;
 549         struct kvm_guestdbg_info_arch guestdbg;
 550         unsigned long pfault_token;
 551         unsigned long pfault_select;
 552         unsigned long pfault_compare;
 553         bool cputm_enabled;
 554         /*
 555          * The seqcount protects updates to cputm_start and sie_block.cputm,
 556          * this way we can have non-blocking reads with consistent values.
 557          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 558          * values and to start/stop/enable/disable cpu timer accounting.
 559          */
 560         seqcount_t cputm_seqcount;
 561         __u64 cputm_start;
 562 };
 563
 564 struct kvm_vm_stat {
 565         u32 remote_tlb_flush;
 566 };
 567
 568 struct kvm_arch_memory_slot {
 569 };
 570
 571 struct s390_map_info {
 572         struct list_head list;
 573         __u64 guest_addr;
 574         __u64 addr;
 575         struct page *page;
 576 };
 577
 578 struct s390_io_adapter {
 579         unsigned int id;
 580         int isc;
 581         bool maskable;
 582         bool masked;
 583         bool swap;
 584         struct rw_semaphore maps_lock;
 585         struct list_head maps;
 586         atomic_t nr_maps;
 587 };
 588
 589 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 590 #define MAX_S390_ADAPTER_MAPS 256
 591
 592 /* maximum size of facilities and facility mask is 2k bytes */
 593 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 594 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 595         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 596 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 597 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 598         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 599
 600 struct kvm_s390_cpu_model {
 601         /* facility mask supported by kvm & hosting machine */
 602         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 603         /* facility list requested by guest (in dma page) */
 604         __u64 *fac_list;
 605         u64 cpuid;
 606         unsigned short ibc;
 607 };
 608
 609 struct kvm_s390_crypto {
 610         struct kvm_s390_crypto_cb *crycb;
 611         __u32 crycbd;
 612         __u8 aes_kw;
 613         __u8 dea_kw;
 614 };
 615
 616 struct kvm_s390_crypto_cb {
 617         __u8    reserved00[72];                 /* 0x0000 */
 618         __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 619         __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 620         __u8    reserved80[128];                /* 0x0080 */
 621 };
 622
 623 /*
 624  * sie_page2 has to be allocated as DMA because fac_list and crycb need
 625  * 31bit addresses in the sie control block.
 626  */
 627 struct sie_page2 {
 628         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 629         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 630         u8 reserved900[0x1000 - 0x900];                 /* 0x0900 */
 631 } __packed;
 632
 633 struct kvm_arch{
 634         void *sca;
 635         int use_esca;
 636         rwlock_t sca_lock;
 637         debug_info_t *dbf;
 638         struct kvm_s390_float_interrupt float_int;
 639         struct kvm_device *flic;
 640         struct gmap *gmap;
 641         unsigned long mem_limit;
 642         int css_support;
 643         int use_irqchip;
 644         int use_cmma;
 645         int user_cpu_state_ctrl;
 646         int user_sigp;
 647         int user_stsi;
 648         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 649         wait_queue_head_t ipte_wq;
 650         int ipte_lock_count;
 651         struct mutex ipte_mutex;
 652         spinlock_t start_stop_lock;
 653         struct sie_page2 *sie_page2;
 654         struct kvm_s390_cpu_model model;
 655         struct kvm_s390_crypto crypto;
 656         u64 epoch;
 657 };
 658
 659 #define KVM_HVA_ERR_BAD         (-1UL)
 660 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 661
 662 static inline bool kvm_is_error_hva(unsigned long addr)
 663 {
 664         return IS_ERR_VALUE(addr);
 665 }
 666
 667 #define ASYNC_PF_PER_VCPU       64
 668 struct kvm_arch_async_pf {
 669         unsigned long pfault_token;
 670 };
 671
 672 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 673
 674 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 675                                struct kvm_async_pf *work);
 676
 677 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 678                                      struct kvm_async_pf *work);
 679
 680 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 681                                  struct kvm_async_pf *work);
 682
 683 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 684 extern char sie_exit;
 685
 686 static inline void kvm_arch_hardware_disable(void) {}
 687 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 688 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 689 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 690 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 691 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 692                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 693 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 694 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 695 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 696                 struct kvm_memory_slot *slot) {}
 697 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 698 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 699
 700 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 701
 702 #endif