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 #define KVM_REQ_ICPT_OPEREXC       10
  47
  48 #define SIGP_CTRL_C             0x80
  49 #define SIGP_CTRL_SCN_MASK      0x3f
  50
  51 union bsca_sigp_ctrl {
  52         __u8 value;
  53         struct {
  54                 __u8 c : 1;
  55                 __u8 r : 1;
  56                 __u8 scn : 6;
  57         };
  58 } __packed;
  59
  60 union esca_sigp_ctrl {
  61         __u16 value;
  62         struct {
  63                 __u8 c : 1;
  64                 __u8 reserved: 7;
  65                 __u8 scn;
  66         };
  67 } __packed;
  68
  69 struct esca_entry {
  70         union esca_sigp_ctrl sigp_ctrl;
  71         __u16   reserved1[3];
  72         __u64   sda;
  73         __u64   reserved2[6];
  74 } __packed;
  75
  76 struct bsca_entry {
  77         __u8    reserved0;
  78         union bsca_sigp_ctrl    sigp_ctrl;
  79         __u16   reserved[3];
  80         __u64   sda;
  81         __u64   reserved2[2];
  82 } __attribute__((packed));
  83
  84 union ipte_control {
  85         unsigned long val;
  86         struct {
  87                 unsigned long k  : 1;
  88                 unsigned long kh : 31;
  89                 unsigned long kg : 32;
  90         };
  91 };
  92
  93 struct bsca_block {
  94         union ipte_control ipte_control;
  95         __u64   reserved[5];
  96         __u64   mcn;
  97         __u64   reserved2;
  98         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
  99 } __attribute__((packed));
 100
 101 struct esca_block {
 102         union ipte_control ipte_control;
 103         __u64   reserved1[7];
 104         __u64   mcn[4];
 105         __u64   reserved2[20];
 106         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 107 } __packed;
 108
 109 #define CPUSTAT_STOPPED    0x80000000
 110 #define CPUSTAT_WAIT       0x10000000
 111 #define CPUSTAT_ECALL_PEND 0x08000000
 112 #define CPUSTAT_STOP_INT   0x04000000
 113 #define CPUSTAT_IO_INT     0x02000000
 114 #define CPUSTAT_EXT_INT    0x01000000
 115 #define CPUSTAT_RUNNING    0x00800000
 116 #define CPUSTAT_RETAINED   0x00400000
 117 #define CPUSTAT_TIMING_SUB 0x00020000
 118 #define CPUSTAT_SIE_SUB    0x00010000
 119 #define CPUSTAT_RRF        0x00008000
 120 #define CPUSTAT_SLSV       0x00004000
 121 #define CPUSTAT_SLSR       0x00002000
 122 #define CPUSTAT_ZARCH      0x00000800
 123 #define CPUSTAT_MCDS       0x00000100
 124 #define CPUSTAT_SM         0x00000080
 125 #define CPUSTAT_IBS        0x00000040
 126 #define CPUSTAT_GED2       0x00000010
 127 #define CPUSTAT_G          0x00000008
 128 #define CPUSTAT_GED        0x00000004
 129 #define CPUSTAT_J          0x00000002
 130 #define CPUSTAT_P          0x00000001
 131
 132 struct kvm_s390_sie_block {
 133         atomic_t cpuflags;              /* 0x0000 */
 134         __u32 : 1;                      /* 0x0004 */
 135         __u32 prefix : 18;
 136         __u32 : 1;
 137         __u32 ibc : 12;
 138         __u8    reserved08[4];          /* 0x0008 */
 139 #define PROG_IN_SIE (1<<0)
 140         __u32   prog0c;                 /* 0x000c */
 141         __u8    reserved10[16];         /* 0x0010 */
 142 #define PROG_BLOCK_SIE  (1<<0)
 143 #define PROG_REQUEST    (1<<1)
 144         atomic_t prog20;                /* 0x0020 */
 145         __u8    reserved24[4];          /* 0x0024 */
 146         __u64   cputm;                  /* 0x0028 */
 147         __u64   ckc;                    /* 0x0030 */
 148         __u64   epoch;                  /* 0x0038 */
 149         __u32   svcc;                   /* 0x0040 */
 150 #define LCTL_CR0        0x8000
 151 #define LCTL_CR6        0x0200
 152 #define LCTL_CR9        0x0040
 153 #define LCTL_CR10       0x0020
 154 #define LCTL_CR11       0x0010
 155 #define LCTL_CR14       0x0002
 156         __u16   lctl;                   /* 0x0044 */
 157         __s16   icpua;                  /* 0x0046 */
 158 #define ICTL_OPEREXC    0x80000000
 159 #define ICTL_PINT       0x20000000
 160 #define ICTL_LPSW       0x00400000
 161 #define ICTL_STCTL      0x00040000
 162 #define ICTL_ISKE       0x00004000
 163 #define ICTL_SSKE       0x00002000
 164 #define ICTL_RRBE       0x00001000
 165 #define ICTL_TPROT      0x00000200
 166         __u32   ictl;                   /* 0x0048 */
 167         __u32   eca;                    /* 0x004c */
 168 #define ICPT_INST       0x04
 169 #define ICPT_PROGI      0x08
 170 #define ICPT_INSTPROGI  0x0C
 171 #define ICPT_EXTINT     0x14
 172 #define ICPT_VALIDITY   0x20
 173 #define ICPT_STOP       0x28
 174 #define ICPT_OPEREXC    0x2C
 175 #define ICPT_PARTEXEC   0x38
 176 #define ICPT_IOINST     0x40
 177         __u8    icptcode;               /* 0x0050 */
 178         __u8    icptstatus;             /* 0x0051 */
 179         __u16   ihcpu;                  /* 0x0052 */
 180         __u8    reserved54[2];          /* 0x0054 */
 181         __u16   ipa;                    /* 0x0056 */
 182         __u32   ipb;                    /* 0x0058 */
 183         __u32   scaoh;                  /* 0x005c */
 184         __u8    reserved60;             /* 0x0060 */
 185         __u8    ecb;                    /* 0x0061 */
 186         __u8    ecb2;                   /* 0x0062 */
 187 #define ECB3_AES 0x04
 188 #define ECB3_DEA 0x08
 189         __u8    ecb3;                   /* 0x0063 */
 190         __u32   scaol;                  /* 0x0064 */
 191         __u8    reserved68[4];          /* 0x0068 */
 192         __u32   todpr;                  /* 0x006c */
 193         __u8    reserved70[16];         /* 0x0070 */
 194         __u64   mso;                    /* 0x0080 */
 195         __u64   msl;                    /* 0x0088 */
 196         psw_t   gpsw;                   /* 0x0090 */
 197         __u64   gg14;                   /* 0x00a0 */
 198         __u64   gg15;                   /* 0x00a8 */
 199         __u8    reservedb0[20];         /* 0x00b0 */
 200         __u16   extcpuaddr;             /* 0x00c4 */
 201         __u16   eic;                    /* 0x00c6 */
 202         __u32   reservedc8;             /* 0x00c8 */
 203         __u16   pgmilc;                 /* 0x00cc */
 204         __u16   iprcc;                  /* 0x00ce */
 205         __u32   dxc;                    /* 0x00d0 */
 206         __u16   mcn;                    /* 0x00d4 */
 207         __u8    perc;                   /* 0x00d6 */
 208         __u8    peratmid;               /* 0x00d7 */
 209         __u64   peraddr;                /* 0x00d8 */
 210         __u8    eai;                    /* 0x00e0 */
 211         __u8    peraid;                 /* 0x00e1 */
 212         __u8    oai;                    /* 0x00e2 */
 213         __u8    armid;                  /* 0x00e3 */
 214         __u8    reservede4[4];          /* 0x00e4 */
 215         __u64   tecmc;                  /* 0x00e8 */
 216         __u8    reservedf0[12];         /* 0x00f0 */
 217 #define CRYCB_FORMAT1 0x00000001
 218 #define CRYCB_FORMAT2 0x00000003
 219         __u32   crycbd;                 /* 0x00fc */
 220         __u64   gcr[16];                /* 0x0100 */
 221         __u64   gbea;                   /* 0x0180 */
 222         __u8    reserved188[24];        /* 0x0188 */
 223         __u32   fac;                    /* 0x01a0 */
 224         __u8    reserved1a4[20];        /* 0x01a4 */
 225         __u64   cbrlo;                  /* 0x01b8 */
 226         __u8    reserved1c0[8];         /* 0x01c0 */
 227         __u32   ecd;                    /* 0x01c8 */
 228         __u8    reserved1cc[18];        /* 0x01cc */
 229         __u64   pp;                     /* 0x01de */
 230         __u8    reserved1e6[2];         /* 0x01e6 */
 231         __u64   itdba;                  /* 0x01e8 */
 232         __u64   riccbd;                 /* 0x01f0 */
 233         __u64   gvrd;                   /* 0x01f8 */
 234 } __attribute__((packed));
 235
 236 struct kvm_s390_itdb {
 237         __u8    data[256];
 238 } __packed;
 239
 240 struct sie_page {
 241         struct kvm_s390_sie_block sie_block;
 242         __u8 reserved200[1024];         /* 0x0200 */
 243         struct kvm_s390_itdb itdb;      /* 0x0600 */
 244         __u8 reserved700[2304];         /* 0x0700 */
 245 } __packed;
 246
 247 struct kvm_vcpu_stat {
 248         u32 exit_userspace;
 249         u32 exit_null;
 250         u32 exit_external_request;
 251         u32 exit_external_interrupt;
 252         u32 exit_stop_request;
 253         u32 exit_validity;
 254         u32 exit_instruction;
 255         u32 exit_pei;
 256         u32 halt_successful_poll;
 257         u32 halt_attempted_poll;
 258         u32 halt_poll_invalid;
 259         u32 halt_wakeup;
 260         u32 instruction_lctl;
 261         u32 instruction_lctlg;
 262         u32 instruction_stctl;
 263         u32 instruction_stctg;
 264         u32 exit_program_interruption;
 265         u32 exit_instr_and_program;
 266         u32 exit_operation_exception;
 267         u32 deliver_external_call;
 268         u32 deliver_emergency_signal;
 269         u32 deliver_service_signal;
 270         u32 deliver_virtio_interrupt;
 271         u32 deliver_stop_signal;
 272         u32 deliver_prefix_signal;
 273         u32 deliver_restart_signal;
 274         u32 deliver_program_int;
 275         u32 deliver_io_int;
 276         u32 exit_wait_state;
 277         u32 instruction_pfmf;
 278         u32 instruction_stidp;
 279         u32 instruction_spx;
 280         u32 instruction_stpx;
 281         u32 instruction_stap;
 282         u32 instruction_storage_key;
 283         u32 instruction_ipte_interlock;
 284         u32 instruction_stsch;
 285         u32 instruction_chsc;
 286         u32 instruction_stsi;
 287         u32 instruction_stfl;
 288         u32 instruction_tprot;
 289         u32 instruction_sie;
 290         u32 instruction_essa;
 291         u32 instruction_sthyi;
 292         u32 instruction_sigp_sense;
 293         u32 instruction_sigp_sense_running;
 294         u32 instruction_sigp_external_call;
 295         u32 instruction_sigp_emergency;
 296         u32 instruction_sigp_cond_emergency;
 297         u32 instruction_sigp_start;
 298         u32 instruction_sigp_stop;
 299         u32 instruction_sigp_stop_store_status;
 300         u32 instruction_sigp_store_status;
 301         u32 instruction_sigp_store_adtl_status;
 302         u32 instruction_sigp_arch;
 303         u32 instruction_sigp_prefix;
 304         u32 instruction_sigp_restart;
 305         u32 instruction_sigp_init_cpu_reset;
 306         u32 instruction_sigp_cpu_reset;
 307         u32 instruction_sigp_unknown;
 308         u32 diagnose_10;
 309         u32 diagnose_44;
 310         u32 diagnose_9c;
 311         u32 diagnose_258;
 312         u32 diagnose_308;
 313         u32 diagnose_500;
 314 };
 315
 316 #define PGM_OPERATION                   0x01
 317 #define PGM_PRIVILEGED_OP               0x02
 318 #define PGM_EXECUTE                     0x03
 319 #define PGM_PROTECTION                  0x04
 320 #define PGM_ADDRESSING                  0x05
 321 #define PGM_SPECIFICATION               0x06
 322 #define PGM_DATA                        0x07
 323 #define PGM_FIXED_POINT_OVERFLOW        0x08
 324 #define PGM_FIXED_POINT_DIVIDE          0x09
 325 #define PGM_DECIMAL_OVERFLOW            0x0a
 326 #define PGM_DECIMAL_DIVIDE              0x0b
 327 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 328 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 329 #define PGM_HFP_SIGNIFICANCE            0x0e
 330 #define PGM_HFP_DIVIDE                  0x0f
 331 #define PGM_SEGMENT_TRANSLATION         0x10
 332 #define PGM_PAGE_TRANSLATION            0x11
 333 #define PGM_TRANSLATION_SPEC            0x12
 334 #define PGM_SPECIAL_OPERATION           0x13
 335 #define PGM_OPERAND                     0x15
 336 #define PGM_TRACE_TABEL                 0x16
 337 #define PGM_VECTOR_PROCESSING           0x1b
 338 #define PGM_SPACE_SWITCH                0x1c
 339 #define PGM_HFP_SQUARE_ROOT             0x1d
 340 #define PGM_PC_TRANSLATION_SPEC         0x1f
 341 #define PGM_AFX_TRANSLATION             0x20
 342 #define PGM_ASX_TRANSLATION             0x21
 343 #define PGM_LX_TRANSLATION              0x22
 344 #define PGM_EX_TRANSLATION              0x23
 345 #define PGM_PRIMARY_AUTHORITY           0x24
 346 #define PGM_SECONDARY_AUTHORITY         0x25
 347 #define PGM_LFX_TRANSLATION             0x26
 348 #define PGM_LSX_TRANSLATION             0x27
 349 #define PGM_ALET_SPECIFICATION          0x28
 350 #define PGM_ALEN_TRANSLATION            0x29
 351 #define PGM_ALE_SEQUENCE                0x2a
 352 #define PGM_ASTE_VALIDITY               0x2b
 353 #define PGM_ASTE_SEQUENCE               0x2c
 354 #define PGM_EXTENDED_AUTHORITY          0x2d
 355 #define PGM_LSTE_SEQUENCE               0x2e
 356 #define PGM_ASTE_INSTANCE               0x2f
 357 #define PGM_STACK_FULL                  0x30
 358 #define PGM_STACK_EMPTY                 0x31
 359 #define PGM_STACK_SPECIFICATION         0x32
 360 #define PGM_STACK_TYPE                  0x33
 361 #define PGM_STACK_OPERATION             0x34
 362 #define PGM_ASCE_TYPE                   0x38
 363 #define PGM_REGION_FIRST_TRANS          0x39
 364 #define PGM_REGION_SECOND_TRANS         0x3a
 365 #define PGM_REGION_THIRD_TRANS          0x3b
 366 #define PGM_MONITOR                     0x40
 367 #define PGM_PER                         0x80
 368 #define PGM_CRYPTO_OPERATION            0x119
 369
 370 /* irq types in order of priority */
 371 enum irq_types {
 372         IRQ_PEND_MCHK_EX = 0,
 373         IRQ_PEND_SVC,
 374         IRQ_PEND_PROG,
 375         IRQ_PEND_MCHK_REP,
 376         IRQ_PEND_EXT_IRQ_KEY,
 377         IRQ_PEND_EXT_MALFUNC,
 378         IRQ_PEND_EXT_EMERGENCY,
 379         IRQ_PEND_EXT_EXTERNAL,
 380         IRQ_PEND_EXT_CLOCK_COMP,
 381         IRQ_PEND_EXT_CPU_TIMER,
 382         IRQ_PEND_EXT_TIMING,
 383         IRQ_PEND_EXT_SERVICE,
 384         IRQ_PEND_EXT_HOST,
 385         IRQ_PEND_PFAULT_INIT,
 386         IRQ_PEND_PFAULT_DONE,
 387         IRQ_PEND_VIRTIO,
 388         IRQ_PEND_IO_ISC_0,
 389         IRQ_PEND_IO_ISC_1,
 390         IRQ_PEND_IO_ISC_2,
 391         IRQ_PEND_IO_ISC_3,
 392         IRQ_PEND_IO_ISC_4,
 393         IRQ_PEND_IO_ISC_5,
 394         IRQ_PEND_IO_ISC_6,
 395         IRQ_PEND_IO_ISC_7,
 396         IRQ_PEND_SIGP_STOP,
 397         IRQ_PEND_RESTART,
 398         IRQ_PEND_SET_PREFIX,
 399         IRQ_PEND_COUNT
 400 };
 401
 402 /* We have 2M for virtio device descriptor pages. Smallest amount of
 403  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 404  */
 405 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 406
 407 /*
 408  * Repressible (non-floating) machine check interrupts
 409  * subclass bits in MCIC
 410  */
 411 #define MCHK_EXTD_BIT 58
 412 #define MCHK_DEGR_BIT 56
 413 #define MCHK_WARN_BIT 55
 414 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 415                        (1UL << MCHK_EXTD_BIT) | \
 416                        (1UL << MCHK_WARN_BIT))
 417
 418 /* Exigent machine check interrupts subclass bits in MCIC */
 419 #define MCHK_SD_BIT 63
 420 #define MCHK_PD_BIT 62
 421 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 422
 423 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 424                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 425                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 426                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 427                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 428                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 429                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 430                            (1UL << IRQ_PEND_EXT_HOST)       | \
 431                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 432                            (1UL << IRQ_PEND_VIRTIO)         | \
 433                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 434                            (1UL << IRQ_PEND_PFAULT_DONE))
 435
 436 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 437                           (1UL << IRQ_PEND_IO_ISC_1) | \
 438                           (1UL << IRQ_PEND_IO_ISC_2) | \
 439                           (1UL << IRQ_PEND_IO_ISC_3) | \
 440                           (1UL << IRQ_PEND_IO_ISC_4) | \
 441                           (1UL << IRQ_PEND_IO_ISC_5) | \
 442                           (1UL << IRQ_PEND_IO_ISC_6) | \
 443                           (1UL << IRQ_PEND_IO_ISC_7))
 444
 445 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 446                             (1UL << IRQ_PEND_MCHK_EX))
 447
 448 struct kvm_s390_interrupt_info {
 449         struct list_head list;
 450         u64     type;
 451         union {
 452                 struct kvm_s390_io_info io;
 453                 struct kvm_s390_ext_info ext;
 454                 struct kvm_s390_pgm_info pgm;
 455                 struct kvm_s390_emerg_info emerg;
 456                 struct kvm_s390_extcall_info extcall;
 457                 struct kvm_s390_prefix_info prefix;
 458                 struct kvm_s390_stop_info stop;
 459                 struct kvm_s390_mchk_info mchk;
 460         };
 461 };
 462
 463 struct kvm_s390_irq_payload {
 464         struct kvm_s390_io_info io;
 465         struct kvm_s390_ext_info ext;
 466         struct kvm_s390_pgm_info pgm;
 467         struct kvm_s390_emerg_info emerg;
 468         struct kvm_s390_extcall_info extcall;
 469         struct kvm_s390_prefix_info prefix;
 470         struct kvm_s390_stop_info stop;
 471         struct kvm_s390_mchk_info mchk;
 472 };
 473
 474 struct kvm_s390_local_interrupt {
 475         spinlock_t lock;
 476         struct kvm_s390_float_interrupt *float_int;
 477         struct swait_queue_head *wq;
 478         atomic_t *cpuflags;
 479         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 480         struct kvm_s390_irq_payload irq;
 481         unsigned long pending_irqs;
 482 };
 483
 484 #define FIRQ_LIST_IO_ISC_0 0
 485 #define FIRQ_LIST_IO_ISC_1 1
 486 #define FIRQ_LIST_IO_ISC_2 2
 487 #define FIRQ_LIST_IO_ISC_3 3
 488 #define FIRQ_LIST_IO_ISC_4 4
 489 #define FIRQ_LIST_IO_ISC_5 5
 490 #define FIRQ_LIST_IO_ISC_6 6
 491 #define FIRQ_LIST_IO_ISC_7 7
 492 #define FIRQ_LIST_PFAULT   8
 493 #define FIRQ_LIST_VIRTIO   9
 494 #define FIRQ_LIST_COUNT   10
 495 #define FIRQ_CNTR_IO       0
 496 #define FIRQ_CNTR_SERVICE  1
 497 #define FIRQ_CNTR_VIRTIO   2
 498 #define FIRQ_CNTR_PFAULT   3
 499 #define FIRQ_MAX_COUNT     4
 500
 501 struct kvm_s390_float_interrupt {
 502         unsigned long pending_irqs;
 503         spinlock_t lock;
 504         struct list_head lists[FIRQ_LIST_COUNT];
 505         int counters[FIRQ_MAX_COUNT];
 506         struct kvm_s390_mchk_info mchk;
 507         struct kvm_s390_ext_info srv_signal;
 508         int next_rr_cpu;
 509         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 510 };
 511
 512 struct kvm_hw_wp_info_arch {
 513         unsigned long addr;
 514         unsigned long phys_addr;
 515         int len;
 516         char *old_data;
 517 };
 518
 519 struct kvm_hw_bp_info_arch {
 520         unsigned long addr;
 521         int len;
 522 };
 523
 524 /*
 525  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 526  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 527  * arch/s390/include/uapi/asm/kvm.h
 528  */
 529 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 530
 531 #define guestdbg_enabled(vcpu) \
 532                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 533 #define guestdbg_sstep_enabled(vcpu) \
 534                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 535 #define guestdbg_hw_bp_enabled(vcpu) \
 536                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 537 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 538                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 539
 540 struct kvm_guestdbg_info_arch {
 541         unsigned long cr0;
 542         unsigned long cr9;
 543         unsigned long cr10;
 544         unsigned long cr11;
 545         struct kvm_hw_bp_info_arch *hw_bp_info;
 546         struct kvm_hw_wp_info_arch *hw_wp_info;
 547         int nr_hw_bp;
 548         int nr_hw_wp;
 549         unsigned long last_bp;
 550 };
 551
 552 struct kvm_vcpu_arch {
 553         struct kvm_s390_sie_block *sie_block;
 554         /* if vsie is active, currently executed shadow sie control block */
 555         struct kvm_s390_sie_block *vsie_block;
 556         unsigned int      host_acrs[NUM_ACRS];
 557         struct fpu        host_fpregs;
 558         struct kvm_s390_local_interrupt local_int;
 559         struct hrtimer    ckc_timer;
 560         struct kvm_s390_pgm_info pgm;
 561         struct gmap *gmap;
 562         /* backup location for the currently enabled gmap when scheduled out */
 563         struct gmap *enabled_gmap;
 564         struct kvm_guestdbg_info_arch guestdbg;
 565         unsigned long pfault_token;
 566         unsigned long pfault_select;
 567         unsigned long pfault_compare;
 568         bool cputm_enabled;
 569         /*
 570          * The seqcount protects updates to cputm_start and sie_block.cputm,
 571          * this way we can have non-blocking reads with consistent values.
 572          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 573          * values and to start/stop/enable/disable cpu timer accounting.
 574          */
 575         seqcount_t cputm_seqcount;
 576         __u64 cputm_start;
 577 };
 578
 579 struct kvm_vm_stat {
 580         u32 remote_tlb_flush;
 581 };
 582
 583 struct kvm_arch_memory_slot {
 584 };
 585
 586 struct s390_map_info {
 587         struct list_head list;
 588         __u64 guest_addr;
 589         __u64 addr;
 590         struct page *page;
 591 };
 592
 593 struct s390_io_adapter {
 594         unsigned int id;
 595         int isc;
 596         bool maskable;
 597         bool masked;
 598         bool swap;
 599         struct rw_semaphore maps_lock;
 600         struct list_head maps;
 601         atomic_t nr_maps;
 602 };
 603
 604 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 605 #define MAX_S390_ADAPTER_MAPS 256
 606
 607 /* maximum size of facilities and facility mask is 2k bytes */
 608 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 609 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 610         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 611 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 612 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 613         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 614
 615 struct kvm_s390_cpu_model {
 616         /* facility mask supported by kvm & hosting machine */
 617         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 618         /* facility list requested by guest (in dma page) */
 619         __u64 *fac_list;
 620         u64 cpuid;
 621         unsigned short ibc;
 622 };
 623
 624 struct kvm_s390_crypto {
 625         struct kvm_s390_crypto_cb *crycb;
 626         __u32 crycbd;
 627         __u8 aes_kw;
 628         __u8 dea_kw;
 629 };
 630
 631 struct kvm_s390_crypto_cb {
 632         __u8    reserved00[72];                 /* 0x0000 */
 633         __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 634         __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 635         __u8    reserved80[128];                /* 0x0080 */
 636 };
 637
 638 /*
 639  * sie_page2 has to be allocated as DMA because fac_list and crycb need
 640  * 31bit addresses in the sie control block.
 641  */
 642 struct sie_page2 {
 643         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 644         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 645         u8 reserved900[0x1000 - 0x900];                 /* 0x0900 */
 646 } __packed;
 647
 648 struct kvm_s390_vsie {
 649         struct mutex mutex;
 650         struct radix_tree_root addr_to_page;
 651         int page_count;
 652         int next;
 653         struct page *pages[KVM_MAX_VCPUS];
 654 };
 655
 656 struct kvm_arch{
 657         void *sca;
 658         int use_esca;
 659         rwlock_t sca_lock;
 660         debug_info_t *dbf;
 661         struct kvm_s390_float_interrupt float_int;
 662         struct kvm_device *flic;
 663         struct gmap *gmap;
 664         unsigned long mem_limit;
 665         int css_support;
 666         int use_irqchip;
 667         int use_cmma;
 668         int user_cpu_state_ctrl;
 669         int user_sigp;
 670         int user_stsi;
 671         int user_instr0;
 672         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 673         wait_queue_head_t ipte_wq;
 674         int ipte_lock_count;
 675         struct mutex ipte_mutex;
 676         struct ratelimit_state sthyi_limit;
 677         spinlock_t start_stop_lock;
 678         struct sie_page2 *sie_page2;
 679         struct kvm_s390_cpu_model model;
 680         struct kvm_s390_crypto crypto;
 681         struct kvm_s390_vsie vsie;
 682         u64 epoch;
 683         /* subset of available cpu features enabled by user space */
 684         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 685 };
 686
 687 #define KVM_HVA_ERR_BAD         (-1UL)
 688 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 689
 690 static inline bool kvm_is_error_hva(unsigned long addr)
 691 {
 692         return IS_ERR_VALUE(addr);
 693 }
 694
 695 #define ASYNC_PF_PER_VCPU       64
 696 struct kvm_arch_async_pf {
 697         unsigned long pfault_token;
 698 };
 699
 700 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 701
 702 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 703                                struct kvm_async_pf *work);
 704
 705 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 706                                      struct kvm_async_pf *work);
 707
 708 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 709                                  struct kvm_async_pf *work);
 710
 711 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 712 extern char sie_exit;
 713
 714 static inline void kvm_arch_hardware_disable(void) {}
 715 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 716 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 717 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 718 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 719 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 720                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 721 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 722 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 723 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 724                 struct kvm_memory_slot *slot) {}
 725 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 726 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 727
 728 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 729
 730 #endif