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 #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
  54 union bsca_sigp_ctrl {
  55         __u8 value;
  56         struct {
  57                 __u8 c : 1;
  58                 __u8 r : 1;
  59                 __u8 scn : 6;
  60         };
  61 };
  62
  63 union esca_sigp_ctrl {
  64         __u16 value;
  65         struct {
  66                 __u8 c : 1;
  67                 __u8 reserved: 7;
  68                 __u8 scn;
  69         };
  70 };
  71
  72 struct esca_entry {
  73         union esca_sigp_ctrl sigp_ctrl;
  74         __u16   reserved1[3];
  75         __u64   sda;
  76         __u64   reserved2[6];
  77 };
  78
  79 struct 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
  87 union 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
  96 struct 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
 104 struct 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  */
 119 struct 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
 150 struct 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
 277 struct kvm_s390_itdb {
 278         __u8    data[256];
 279 };
 280
 281 struct 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
 289 struct 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 */
 413 enum 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
 490 struct 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
 505 struct 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
 516 struct 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
 549 struct 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
 563 struct kvm_hw_wp_info_arch {
 564         unsigned long addr;
 565         unsigned long phys_addr;
 566         int len;
 567         char *old_data;
 568 };
 569
 570 struct 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
 591 struct 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
 603 struct 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
 632 struct kvm_vm_stat {
 633         ulong remote_tlb_flush;
 634 };
 635
 636 struct kvm_arch_memory_slot {
 637 };
 638
 639 struct s390_map_info {
 640         struct list_head list;
 641         __u64 guest_addr;
 642         __u64 addr;
 643         struct page *page;
 644 };
 645
 646 struct 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
 669 struct 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
 678 struct kvm_s390_crypto {
 679         struct kvm_s390_crypto_cb *crycb;
 680         __u32 crycbd;
 681         __u8 aes_kw;
 682         __u8 dea_kw;
 683 };
 684
 685 struct 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  */
 696 struct 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
 702 struct 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
 710 struct 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
 716 struct 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
 751 static 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
 757 struct kvm_arch_async_pf {
 758         unsigned long pfault_token;
 759 };
 760
 761 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 762
 763 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 764                                struct kvm_async_pf *work);
 765
 766 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 767                                      struct kvm_async_pf *work);
 768
 769 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 770                                  struct kvm_async_pf *work);
 771
 772 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 773 extern char sie_exit;
 774
 775 static inline void kvm_arch_hardware_disable(void) {}
 776 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 777 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 778 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 779 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 780 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 781                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 782 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 783 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 784 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 785                 struct kvm_memory_slot *slot) {}
 786 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 787 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 788
 789 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 790
 791 #endif