LXR linux/arch/s390/include/asm/kvm

   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#include <asm/guarded_storage.h>
  29
  30#define KVM_S390_BSCA_CPU_SLOTS 64
  31#define KVM_S390_ESCA_CPU_SLOTS 248
  32#define KVM_MAX_VCPUS 255
  33#define KVM_USER_MEM_SLOTS 32
  34
  35/*
  36 * These seem to be used for allocating ->chip in the routing table,
  37 * which we don't use. 4096 is an out-of-thin-air value. If we need
  38 * to look at ->chip later on, we'll need to revisit this.
  39 */
  40#define KVM_NR_IRQCHIPS 1
  41#define KVM_IRQCHIP_NUM_PINS 4096
  42#define KVM_HALT_POLL_NS_DEFAULT 80000
  43
  44/* s390-specific vcpu->requests bit members */
  45#define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
  46#define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
  47#define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
  48#define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
  49#define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
  50
  51#define SIGP_CTRL_C             0x80
  52#define SIGP_CTRL_SCN_MASK      0x3f
  53
  54union bsca_sigp_ctrl {
  55        __u8 value;
  56        struct {
  57                __u8 c : 1;
  58                __u8 r : 1;
  59                __u8 scn : 6;
  60        };
  61};
  62
  63union esca_sigp_ctrl {
  64        __u16 value;
  65        struct {
  66                __u8 c : 1;
  67                __u8 reserved: 7;
  68                __u8 scn;
  69        };
  70};
  71
  72struct esca_entry {
  73        union esca_sigp_ctrl sigp_ctrl;
  74        __u16   reserved1[3];
  75        __u64   sda;
  76        __u64   reserved2[6];
  77};
  78
  79struct bsca_entry {
  80        __u8    reserved0;
  81        union bsca_sigp_ctrl    sigp_ctrl;
  82        __u16   reserved[3];
  83        __u64   sda;
  84        __u64   reserved2[2];
  85};
  86
  87union ipte_control {
  88        unsigned long val;
  89        struct {
  90                unsigned long k  : 1;
  91                unsigned long kh : 31;
  92                unsigned long kg : 32;
  93        };
  94};
  95
  96struct bsca_block {
  97        union ipte_control ipte_control;
  98        __u64   reserved[5];
  99        __u64   mcn;
 100        __u64   reserved2;
 101        struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
 102};
 103
 104struct esca_block {
 105        union ipte_control ipte_control;
 106        __u64   reserved1[7];
 107        __u64   mcn[4];
 108        __u64   reserved2[20];
 109        struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 110};
 111
 112/*
 113 * This struct is used to store some machine check info from lowcore
 114 * for machine checks that happen while the guest is running.
 115 * This info in host's lowcore might be overwritten by a second machine
 116 * check from host when host is in the machine check's high-level handling.
 117 * The size is 24 bytes.
 118 */
 119struct mcck_volatile_info {
 120        __u64 mcic;
 121        __u64 failing_storage_address;
 122        __u32 ext_damage_code;
 123        __u32 reserved;
 124};
 125
 126#define CPUSTAT_STOPPED    0x80000000
 127#define CPUSTAT_WAIT       0x10000000
 128#define CPUSTAT_ECALL_PEND 0x08000000
 129#define CPUSTAT_STOP_INT   0x04000000
 130#define CPUSTAT_IO_INT     0x02000000
 131#define CPUSTAT_EXT_INT    0x01000000
 132#define CPUSTAT_RUNNING    0x00800000
 133#define CPUSTAT_RETAINED   0x00400000
 134#define CPUSTAT_TIMING_SUB 0x00020000
 135#define CPUSTAT_SIE_SUB    0x00010000
 136#define CPUSTAT_RRF        0x00008000
 137#define CPUSTAT_SLSV       0x00004000
 138#define CPUSTAT_SLSR       0x00002000
 139#define CPUSTAT_ZARCH      0x00000800
 140#define CPUSTAT_MCDS       0x00000100
 141#define CPUSTAT_KSS        0x00000200
 142#define CPUSTAT_SM         0x00000080
 143#define CPUSTAT_IBS        0x00000040
 144#define CPUSTAT_GED2       0x00000010
 145#define CPUSTAT_G          0x00000008
 146#define CPUSTAT_GED        0x00000004
 147#define CPUSTAT_J          0x00000002
 148#define CPUSTAT_P          0x00000001
 149
 150struct kvm_s390_sie_block {
 151        atomic_t cpuflags;              /* 0x0000 */
 152        __u32 : 1;                      /* 0x0004 */
 153        __u32 prefix : 18;
 154        __u32 : 1;
 155        __u32 ibc : 12;
 156        __u8    reserved08[4];          /* 0x0008 */
 157#define PROG_IN_SIE (1<<0)
 158        __u32   prog0c;                 /* 0x000c */
 159        __u8    reserved10[16];         /* 0x0010 */
 160#define PROG_BLOCK_SIE  (1<<0)
 161#define PROG_REQUEST    (1<<1)
 162        atomic_t prog20;                /* 0x0020 */
 163        __u8    reserved24[4];          /* 0x0024 */
 164        __u64   cputm;                  /* 0x0028 */
 165        __u64   ckc;                    /* 0x0030 */
 166        __u64   epoch;                  /* 0x0038 */
 167        __u32   svcc;                   /* 0x0040 */
 168#define LCTL_CR0        0x8000
 169#define LCTL_CR6        0x0200
 170#define LCTL_CR9        0x0040
 171#define LCTL_CR10       0x0020
 172#define LCTL_CR11       0x0010
 173#define LCTL_CR14       0x0002
 174        __u16   lctl;                   /* 0x0044 */
 175        __s16   icpua;                  /* 0x0046 */
 176#define ICTL_OPEREXC    0x80000000
 177#define ICTL_PINT       0x20000000
 178#define ICTL_LPSW       0x00400000
 179#define ICTL_STCTL      0x00040000
 180#define ICTL_ISKE       0x00004000
 181#define ICTL_SSKE       0x00002000
 182#define ICTL_RRBE       0x00001000
 183#define ICTL_TPROT      0x00000200
 184        __u32   ictl;                   /* 0x0048 */
 185#define ECA_CEI         0x80000000
 186#define ECA_IB          0x40000000
 187#define ECA_SIGPI       0x10000000
 188#define ECA_MVPGI       0x01000000
 189#define ECA_VX          0x00020000
 190#define ECA_PROTEXCI    0x00002000
 191#define ECA_SII         0x00000001
 192        __u32   eca;                    /* 0x004c */
 193#define ICPT_INST       0x04
 194#define ICPT_PROGI      0x08
 195#define ICPT_INSTPROGI  0x0C
 196#define ICPT_EXTREQ     0x10
 197#define ICPT_EXTINT     0x14
 198#define ICPT_IOREQ      0x18
 199#define ICPT_WAIT       0x1c
 200#define ICPT_VALIDITY   0x20
 201#define ICPT_STOP       0x28
 202#define ICPT_OPEREXC    0x2C
 203#define ICPT_PARTEXEC   0x38
 204#define ICPT_IOINST     0x40
 205#define ICPT_KSS        0x5c
 206        __u8    icptcode;               /* 0x0050 */
 207        __u8    icptstatus;             /* 0x0051 */
 208        __u16   ihcpu;                  /* 0x0052 */
 209        __u8    reserved54[2];          /* 0x0054 */
 210        __u16   ipa;                    /* 0x0056 */
 211        __u32   ipb;                    /* 0x0058 */
 212        __u32   scaoh;                  /* 0x005c */
 213        __u8    reserved60;             /* 0x0060 */
 214#define ECB_GS          0x40
 215#define ECB_TE          0x10
 216#define ECB_SRSI        0x04
 217#define ECB_HOSTPROTINT 0x02
 218        __u8    ecb;                    /* 0x0061 */
 219#define ECB2_CMMA       0x80
 220#define ECB2_IEP        0x20
 221#define ECB2_PFMFI      0x08
 222#define ECB2_ESCA       0x04
 223        __u8    ecb2;                   /* 0x0062 */
 224#define ECB3_DEA 0x08
 225#define ECB3_AES 0x04
 226#define ECB3_RI  0x01
 227        __u8    ecb3;                   /* 0x0063 */
 228        __u32   scaol;                  /* 0x0064 */
 229        __u8    reserved68[4];          /* 0x0068 */
 230        __u32   todpr;                  /* 0x006c */
 231        __u8    reserved70[16];         /* 0x0070 */
 232        __u64   mso;                    /* 0x0080 */
 233        __u64   msl;                    /* 0x0088 */
 234        psw_t   gpsw;                   /* 0x0090 */
 235        __u64   gg14;                   /* 0x00a0 */
 236        __u64   gg15;                   /* 0x00a8 */
 237        __u8    reservedb0[20];         /* 0x00b0 */
 238        __u16   extcpuaddr;             /* 0x00c4 */
 239        __u16   eic;                    /* 0x00c6 */
 240        __u32   reservedc8;             /* 0x00c8 */
 241        __u16   pgmilc;                 /* 0x00cc */
 242        __u16   iprcc;                  /* 0x00ce */
 243        __u32   dxc;                    /* 0x00d0 */
 244        __u16   mcn;                    /* 0x00d4 */
 245        __u8    perc;                   /* 0x00d6 */
 246        __u8    peratmid;               /* 0x00d7 */
 247        __u64   peraddr;                /* 0x00d8 */
 248        __u8    eai;                    /* 0x00e0 */
 249        __u8    peraid;                 /* 0x00e1 */
 250        __u8    oai;                    /* 0x00e2 */
 251        __u8    armid;                  /* 0x00e3 */
 252        __u8    reservede4[4];          /* 0x00e4 */
 253        __u64   tecmc;                  /* 0x00e8 */
 254        __u8    reservedf0[12];         /* 0x00f0 */
 255#define CRYCB_FORMAT1 0x00000001
 256#define CRYCB_FORMAT2 0x00000003
 257        __u32   crycbd;                 /* 0x00fc */
 258        __u64   gcr[16];                /* 0x0100 */
 259        __u64   gbea;                   /* 0x0180 */
 260        __u8    reserved188[8];         /* 0x0188 */
 261        __u64   sdnxo;                  /* 0x0190 */
 262        __u8    reserved198[8];         /* 0x0198 */
 263        __u32   fac;                    /* 0x01a0 */
 264        __u8    reserved1a4[20];        /* 0x01a4 */
 265        __u64   cbrlo;                  /* 0x01b8 */
 266        __u8    reserved1c0[8];         /* 0x01c0 */
 267#define ECD_HOSTREGMGMT 0x20000000
 268        __u32   ecd;                    /* 0x01c8 */
 269        __u8    reserved1cc[18];        /* 0x01cc */
 270        __u64   pp;                     /* 0x01de */
 271        __u8    reserved1e6[2];         /* 0x01e6 */
 272        __u64   itdba;                  /* 0x01e8 */
 273        __u64   riccbd;                 /* 0x01f0 */
 274        __u64   gvrd;                   /* 0x01f8 */
 275} __attribute__((packed));
 276
 277struct kvm_s390_itdb {
 278        __u8    data[256];
 279};
 280
 281struct sie_page {
 282        struct kvm_s390_sie_block sie_block;
 283        struct mcck_volatile_info mcck_info;    /* 0x0200 */
 284        __u8 reserved218[1000];         /* 0x0218 */
 285        struct kvm_s390_itdb itdb;      /* 0x0600 */
 286        __u8 reserved700[2304];         /* 0x0700 */
 287};
 288
 289struct kvm_vcpu_stat {
 290        u64 exit_userspace;
 291        u64 exit_null;
 292        u64 exit_external_request;
 293        u64 exit_external_interrupt;
 294        u64 exit_stop_request;
 295        u64 exit_validity;
 296        u64 exit_instruction;
 297        u64 exit_pei;
 298        u64 halt_successful_poll;
 299        u64 halt_attempted_poll;
 300        u64 halt_poll_invalid;
 301        u64 halt_wakeup;
 302        u64 instruction_lctl;
 303        u64 instruction_lctlg;
 304        u64 instruction_stctl;
 305        u64 instruction_stctg;
 306        u64 exit_program_interruption;
 307        u64 exit_instr_and_program;
 308        u64 exit_operation_exception;
 309        u64 deliver_external_call;
 310        u64 deliver_emergency_signal;
 311        u64 deliver_service_signal;
 312        u64 deliver_virtio_interrupt;
 313        u64 deliver_stop_signal;
 314        u64 deliver_prefix_signal;
 315        u64 deliver_restart_signal;
 316        u64 deliver_program_int;
 317        u64 deliver_io_int;
 318        u64 exit_wait_state;
 319        u64 instruction_pfmf;
 320        u64 instruction_stidp;
 321        u64 instruction_spx;
 322        u64 instruction_stpx;
 323        u64 instruction_stap;
 324        u64 instruction_storage_key;
 325        u64 instruction_ipte_interlock;
 326        u64 instruction_stsch;
 327        u64 instruction_chsc;
 328        u64 instruction_stsi;
 329        u64 instruction_stfl;
 330        u64 instruction_tprot;
 331        u64 instruction_sie;
 332        u64 instruction_essa;
 333        u64 instruction_sthyi;
 334        u64 instruction_sigp_sense;
 335        u64 instruction_sigp_sense_running;
 336        u64 instruction_sigp_external_call;
 337        u64 instruction_sigp_emergency;
 338        u64 instruction_sigp_cond_emergency;
 339        u64 instruction_sigp_start;
 340        u64 instruction_sigp_stop;
 341        u64 instruction_sigp_stop_store_status;
 342        u64 instruction_sigp_store_status;
 343        u64 instruction_sigp_store_adtl_status;
 344        u64 instruction_sigp_arch;
 345        u64 instruction_sigp_prefix;
 346        u64 instruction_sigp_restart;
 347        u64 instruction_sigp_init_cpu_reset;
 348        u64 instruction_sigp_cpu_reset;
 349        u64 instruction_sigp_unknown;
 350        u64 diagnose_10;
 351        u64 diagnose_44;
 352        u64 diagnose_9c;
 353        u64 diagnose_258;
 354        u64 diagnose_308;
 355        u64 diagnose_500;
 356};
 357
 358#define PGM_OPERATION                   0x01
 359#define PGM_PRIVILEGED_OP               0x02
 360#define PGM_EXECUTE                     0x03
 361#define PGM_PROTECTION                  0x04
 362#define PGM_ADDRESSING                  0x05
 363#define PGM_SPECIFICATION               0x06
 364#define PGM_DATA                        0x07
 365#define PGM_FIXED_POINT_OVERFLOW        0x08
 366#define PGM_FIXED_POINT_DIVIDE          0x09
 367#define PGM_DECIMAL_OVERFLOW            0x0a
 368#define PGM_DECIMAL_DIVIDE              0x0b
 369#define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 370#define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 371#define PGM_HFP_SIGNIFICANCE            0x0e
 372#define PGM_HFP_DIVIDE                  0x0f
 373#define PGM_SEGMENT_TRANSLATION         0x10
 374#define PGM_PAGE_TRANSLATION            0x11
 375#define PGM_TRANSLATION_SPEC            0x12
 376#define PGM_SPECIAL_OPERATION           0x13
 377#define PGM_OPERAND                     0x15
 378#define PGM_TRACE_TABEL                 0x16
 379#define PGM_VECTOR_PROCESSING           0x1b
 380#define PGM_SPACE_SWITCH                0x1c
 381#define PGM_HFP_SQUARE_ROOT             0x1d
 382#define PGM_PC_TRANSLATION_SPEC         0x1f
 383#define PGM_AFX_TRANSLATION             0x20
 384#define PGM_ASX_TRANSLATION             0x21
 385#define PGM_LX_TRANSLATION              0x22
 386#define PGM_EX_TRANSLATION              0x23
 387#define PGM_PRIMARY_AUTHORITY           0x24
 388#define PGM_SECONDARY_AUTHORITY         0x25
 389#define PGM_LFX_TRANSLATION             0x26
 390#define PGM_LSX_TRANSLATION             0x27
 391#define PGM_ALET_SPECIFICATION          0x28
 392#define PGM_ALEN_TRANSLATION            0x29
 393#define PGM_ALE_SEQUENCE                0x2a
 394#define PGM_ASTE_VALIDITY               0x2b
 395#define PGM_ASTE_SEQUENCE               0x2c
 396#define PGM_EXTENDED_AUTHORITY          0x2d
 397#define PGM_LSTE_SEQUENCE               0x2e
 398#define PGM_ASTE_INSTANCE               0x2f
 399#define PGM_STACK_FULL                  0x30
 400#define PGM_STACK_EMPTY                 0x31
 401#define PGM_STACK_SPECIFICATION         0x32
 402#define PGM_STACK_TYPE                  0x33
 403#define PGM_STACK_OPERATION             0x34
 404#define PGM_ASCE_TYPE                   0x38
 405#define PGM_REGION_FIRST_TRANS          0x39
 406#define PGM_REGION_SECOND_TRANS         0x3a
 407#define PGM_REGION_THIRD_TRANS          0x3b
 408#define PGM_MONITOR                     0x40
 409#define PGM_PER                         0x80
 410#define PGM_CRYPTO_OPERATION            0x119
 411
 412/* irq types in order of priority */
 413enum irq_types {
 414        IRQ_PEND_MCHK_EX = 0,
 415        IRQ_PEND_SVC,
 416        IRQ_PEND_PROG,
 417        IRQ_PEND_MCHK_REP,
 418        IRQ_PEND_EXT_IRQ_KEY,
 419        IRQ_PEND_EXT_MALFUNC,
 420        IRQ_PEND_EXT_EMERGENCY,
 421        IRQ_PEND_EXT_EXTERNAL,
 422        IRQ_PEND_EXT_CLOCK_COMP,
 423        IRQ_PEND_EXT_CPU_TIMER,
 424        IRQ_PEND_EXT_TIMING,
 425        IRQ_PEND_EXT_SERVICE,
 426        IRQ_PEND_EXT_HOST,
 427        IRQ_PEND_PFAULT_INIT,
 428        IRQ_PEND_PFAULT_DONE,
 429        IRQ_PEND_VIRTIO,
 430        IRQ_PEND_IO_ISC_0,
 431        IRQ_PEND_IO_ISC_1,
 432        IRQ_PEND_IO_ISC_2,
 433        IRQ_PEND_IO_ISC_3,
 434        IRQ_PEND_IO_ISC_4,
 435        IRQ_PEND_IO_ISC_5,
 436        IRQ_PEND_IO_ISC_6,
 437        IRQ_PEND_IO_ISC_7,
 438        IRQ_PEND_SIGP_STOP,
 439        IRQ_PEND_RESTART,
 440        IRQ_PEND_SET_PREFIX,
 441        IRQ_PEND_COUNT
 442};
 443
 444/* We have 2M for virtio device descriptor pages. Smallest amount of
 445 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 446 */
 447#define KVM_S390_MAX_VIRTIO_IRQS 87381
 448
 449/*
 450 * Repressible (non-floating) machine check interrupts
 451 * subclass bits in MCIC
 452 */
 453#define MCHK_EXTD_BIT 58
 454#define MCHK_DEGR_BIT 56
 455#define MCHK_WARN_BIT 55
 456#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 457                       (1UL << MCHK_EXTD_BIT) | \
 458                       (1UL << MCHK_WARN_BIT))
 459
 460/* Exigent machine check interrupts subclass bits in MCIC */
 461#define MCHK_SD_BIT 63
 462#define MCHK_PD_BIT 62
 463#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 464
 465#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 466                           (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 467                           (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 468                           (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 469                           (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 470                           (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 471                           (1UL << IRQ_PEND_EXT_TIMING)     | \
 472                           (1UL << IRQ_PEND_EXT_HOST)       | \
 473                           (1UL << IRQ_PEND_EXT_SERVICE)    | \
 474                           (1UL << IRQ_PEND_VIRTIO)         | \
 475                           (1UL << IRQ_PEND_PFAULT_INIT)    | \
 476                           (1UL << IRQ_PEND_PFAULT_DONE))
 477
 478#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 479                          (1UL << IRQ_PEND_IO_ISC_1) | \
 480                          (1UL << IRQ_PEND_IO_ISC_2) | \
 481                          (1UL << IRQ_PEND_IO_ISC_3) | \
 482                          (1UL << IRQ_PEND_IO_ISC_4) | \
 483                          (1UL << IRQ_PEND_IO_ISC_5) | \
 484                          (1UL << IRQ_PEND_IO_ISC_6) | \
 485                          (1UL << IRQ_PEND_IO_ISC_7))
 486
 487#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 488                            (1UL << IRQ_PEND_MCHK_EX))
 489
 490struct kvm_s390_interrupt_info {
 491        struct list_head list;
 492        u64     type;
 493        union {
 494                struct kvm_s390_io_info io;
 495                struct kvm_s390_ext_info ext;
 496                struct kvm_s390_pgm_info pgm;
 497                struct kvm_s390_emerg_info emerg;
 498                struct kvm_s390_extcall_info extcall;
 499                struct kvm_s390_prefix_info prefix;
 500                struct kvm_s390_stop_info stop;
 501                struct kvm_s390_mchk_info mchk;
 502        };
 503};
 504
 505struct kvm_s390_irq_payload {
 506        struct kvm_s390_io_info io;
 507        struct kvm_s390_ext_info ext;
 508        struct kvm_s390_pgm_info pgm;
 509        struct kvm_s390_emerg_info emerg;
 510        struct kvm_s390_extcall_info extcall;
 511        struct kvm_s390_prefix_info prefix;
 512        struct kvm_s390_stop_info stop;
 513        struct kvm_s390_mchk_info mchk;
 514};
 515
 516struct kvm_s390_local_interrupt {
 517        spinlock_t lock;
 518        struct kvm_s390_float_interrupt *float_int;
 519        struct swait_queue_head *wq;
 520        atomic_t *cpuflags;
 521        DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 522        struct kvm_s390_irq_payload irq;
 523        unsigned long pending_irqs;
 524};
 525
 526#define FIRQ_LIST_IO_ISC_0 0
 527#define FIRQ_LIST_IO_ISC_1 1
 528#define FIRQ_LIST_IO_ISC_2 2
 529#define FIRQ_LIST_IO_ISC_3 3
 530#define FIRQ_LIST_IO_ISC_4 4
 531#define FIRQ_LIST_IO_ISC_5 5
 532#define FIRQ_LIST_IO_ISC_6 6
 533#define FIRQ_LIST_IO_ISC_7 7
 534#define FIRQ_LIST_PFAULT   8
 535#define FIRQ_LIST_VIRTIO   9
 536#define FIRQ_LIST_COUNT   10
 537#define FIRQ_CNTR_IO       0
 538#define FIRQ_CNTR_SERVICE  1
 539#define FIRQ_CNTR_VIRTIO   2
 540#define FIRQ_CNTR_PFAULT   3
 541#define FIRQ_MAX_COUNT     4
 542
 543/* mask the AIS mode for a given ISC */
 544#define AIS_MODE_MASK(isc) (0x80 >> isc)
 545
 546#define KVM_S390_AIS_MODE_ALL    0
 547#define KVM_S390_AIS_MODE_SINGLE 1
 548
 549struct kvm_s390_float_interrupt {
 550        unsigned long pending_irqs;
 551        spinlock_t lock;
 552        struct list_head lists[FIRQ_LIST_COUNT];
 553        int counters[FIRQ_MAX_COUNT];
 554        struct kvm_s390_mchk_info mchk;
 555        struct kvm_s390_ext_info srv_signal;
 556        int next_rr_cpu;
 557        unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 558        struct mutex ais_lock;
 559        u8 simm;
 560        u8 nimm;
 561};
 562
 563struct kvm_hw_wp_info_arch {
 564        unsigned long addr;
 565        unsigned long phys_addr;
 566        int len;
 567        char *old_data;
 568};
 569
 570struct kvm_hw_bp_info_arch {
 571        unsigned long addr;
 572        int len;
 573};
 574
 575/*
 576 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 577 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 578 * arch/s390/include/uapi/asm/kvm.h
 579 */
 580#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 581
 582#define guestdbg_enabled(vcpu) \
 583                (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 584#define guestdbg_sstep_enabled(vcpu) \
 585                (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 586#define guestdbg_hw_bp_enabled(vcpu) \
 587                (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 588#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 589                (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 590
 591struct kvm_guestdbg_info_arch {
 592        unsigned long cr0;
 593        unsigned long cr9;
 594        unsigned long cr10;
 595        unsigned long cr11;
 596        struct kvm_hw_bp_info_arch *hw_bp_info;
 597        struct kvm_hw_wp_info_arch *hw_wp_info;
 598        int nr_hw_bp;
 599        int nr_hw_wp;
 600        unsigned long last_bp;
 601};
 602
 603struct kvm_vcpu_arch {
 604        struct kvm_s390_sie_block *sie_block;
 605        /* if vsie is active, currently executed shadow sie control block */
 606        struct kvm_s390_sie_block *vsie_block;
 607        unsigned int      host_acrs[NUM_ACRS];
 608        struct gs_cb      *host_gscb;
 609        struct fpu        host_fpregs;
 610        struct kvm_s390_local_interrupt local_int;
 611        struct hrtimer    ckc_timer;
 612        struct kvm_s390_pgm_info pgm;
 613        struct gmap *gmap;
 614        /* backup location for the currently enabled gmap when scheduled out */
 615        struct gmap *enabled_gmap;
 616        struct kvm_guestdbg_info_arch guestdbg;
 617        unsigned long pfault_token;
 618        unsigned long pfault_select;
 619        unsigned long pfault_compare;
 620        bool cputm_enabled;
 621        /*
 622         * The seqcount protects updates to cputm_start and sie_block.cputm,
 623         * this way we can have non-blocking reads with consistent values.
 624         * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 625         * values and to start/stop/enable/disable cpu timer accounting.
 626         */
 627        seqcount_t cputm_seqcount;
 628        __u64 cputm_start;
 629        bool gs_enabled;
 630};
 631
 632struct kvm_vm_stat {
 633        ulong remote_tlb_flush;
 634};
 635
 636struct kvm_arch_memory_slot {
 637};
 638
 639struct s390_map_info {
 640        struct list_head list;
 641        __u64 guest_addr;
 642        __u64 addr;
 643        struct page *page;
 644};
 645
 646struct s390_io_adapter {
 647        unsigned int id;
 648        int isc;
 649        bool maskable;
 650        bool masked;
 651        bool swap;
 652        bool suppressible;
 653        struct rw_semaphore maps_lock;
 654        struct list_head maps;
 655        atomic_t nr_maps;
 656};
 657
 658#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 659#define MAX_S390_ADAPTER_MAPS 256
 660
 661/* maximum size of facilities and facility mask is 2k bytes */
 662#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 663#define S390_ARCH_FAC_LIST_SIZE_U64 \
 664        (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 665#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 666#define S390_ARCH_FAC_MASK_SIZE_U64 \
 667        (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 668
 669struct kvm_s390_cpu_model {
 670        /* facility mask supported by kvm & hosting machine */
 671        __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 672        /* facility list requested by guest (in dma page) */
 673        __u64 *fac_list;
 674        u64 cpuid;
 675        unsigned short ibc;
 676};
 677
 678struct kvm_s390_crypto {
 679        struct kvm_s390_crypto_cb *crycb;
 680        __u32 crycbd;
 681        __u8 aes_kw;
 682        __u8 dea_kw;
 683};
 684
 685struct kvm_s390_crypto_cb {
 686        __u8    reserved00[72];                 /* 0x0000 */
 687        __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 688        __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 689        __u8    reserved80[128];                /* 0x0080 */
 690};
 691
 692/*
 693 * sie_page2 has to be allocated as DMA because fac_list and crycb need
 694 * 31bit addresses in the sie control block.
 695 */
 696struct sie_page2 {
 697        __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 698        struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 699        u8 reserved900[0x1000 - 0x900];                 /* 0x0900 */
 700};
 701
 702struct kvm_s390_vsie {
 703        struct mutex mutex;
 704        struct radix_tree_root addr_to_page;
 705        int page_count;
 706        int next;
 707        struct page *pages[KVM_MAX_VCPUS];
 708};
 709
 710struct kvm_s390_migration_state {
 711        unsigned long bitmap_size;      /* in bits (number of guest pages) */
 712        atomic64_t dirty_pages;         /* number of dirty pages */
 713        unsigned long *pgste_bitmap;
 714};
 715
 716struct kvm_arch{
 717        void *sca;
 718        int use_esca;
 719        rwlock_t sca_lock;
 720        debug_info_t *dbf;
 721        struct kvm_s390_float_interrupt float_int;
 722        struct kvm_device *flic;
 723        struct gmap *gmap;
 724        unsigned long mem_limit;
 725        int css_support;
 726        int use_irqchip;
 727        int use_cmma;
 728        int user_cpu_state_ctrl;
 729        int user_sigp;
 730        int user_stsi;
 731        int user_instr0;
 732        struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 733        wait_queue_head_t ipte_wq;
 734        int ipte_lock_count;
 735        struct mutex ipte_mutex;
 736        struct ratelimit_state sthyi_limit;
 737        spinlock_t start_stop_lock;
 738        struct sie_page2 *sie_page2;
 739        struct kvm_s390_cpu_model model;
 740        struct kvm_s390_crypto crypto;
 741        struct kvm_s390_vsie vsie;
 742        u64 epoch;
 743        struct kvm_s390_migration_state *migration_state;
 744        /* subset of available cpu features enabled by user space */
 745        DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 746};
 747
 748#define KVM_HVA_ERR_BAD         (-1UL)
 749#define KVM_HVA_ERR_RO_BAD      (-2UL)
 750
 751static inline bool kvm_is_error_hva(unsigned long addr)
 752{
 753        return IS_ERR_VALUE(addr);
 754}
 755
 756#define ASYNC_PF_PER_VCPU       64
 757struct kvm_arch_async_pf {
 758        unsigned long pfault_token;
 759};
 760
 761bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 762
 763void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 764                               struct kvm_async_pf *work);
 765
 766void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 767                                     struct kvm_async_pf *work);
 768
 769void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 770                                 struct kvm_async_pf *work);
 771
 772extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 773extern char sie_exit;
 774
 775static inline void kvm_arch_hardware_disable(void) {}
 776static inline void kvm_arch_check_processor_compat(void *rtn) {}
 777static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 778static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 779static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 780static inline void kvm_arch_free_memslot(struct kvm *kvm,
 781                struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 782static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 783static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 784static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 785                struct kvm_memory_slot *slot) {}
 786static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 787static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 788
 789void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 790
 791#endif
 792