arch/s390/include/asm/kvm_host.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * definition for kernel virtual machines on s390
   4  *
   5  * Copyright IBM Corp. 2008, 2018
   6  *
   7  *    Author(s): Carsten Otte <cotte@de.ibm.com>
   8  */
   9
  10
  11 #ifndef ASM_KVM_HOST_H
  12 #define ASM_KVM_HOST_H
  13
  14 #include <linux/types.h>
  15 #include <linux/hrtimer.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/kvm_types.h>
  18 #include <linux/kvm_host.h>
  19 #include <linux/kvm.h>
  20 #include <linux/seqlock.h>
  21 #include <asm/debug.h>
  22 #include <asm/cpu.h>
  23 #include <asm/fpu/api.h>
  24 #include <asm/isc.h>
  25 #include <asm/guarded_storage.h>
  26
  27 #define KVM_S390_BSCA_CPU_SLOTS 64
  28 #define KVM_S390_ESCA_CPU_SLOTS 248
  29 #define KVM_MAX_VCPUS 255
  30 #define KVM_USER_MEM_SLOTS 32
  31
  32 /*
  33  * These seem to be used for allocating ->chip in the routing table,
  34  * which we don't use. 4096 is an out-of-thin-air value. If we need
  35  * to look at ->chip later on, we'll need to revisit this.
  36  */
  37 #define KVM_NR_IRQCHIPS 1
  38 #define KVM_IRQCHIP_NUM_PINS 4096
  39 #define KVM_HALT_POLL_NS_DEFAULT 80000
  40
  41 /* s390-specific vcpu->requests bit members */
  42 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
  43 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
  44 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
  45 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
  46 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
  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 };
  59
  60 union esca_sigp_ctrl {
  61         __u16 value;
  62         struct {
  63                 __u8 c : 1;
  64                 __u8 reserved: 7;
  65                 __u8 scn;
  66         };
  67 };
  68
  69 struct esca_entry {
  70         union esca_sigp_ctrl sigp_ctrl;
  71         __u16   reserved1[3];
  72         __u64   sda;
  73         __u64   reserved2[6];
  74 };
  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 };
  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 };
 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 };
 108
 109 /*
 110  * This struct is used to store some machine check info from lowcore
 111  * for machine checks that happen while the guest is running.
 112  * This info in host's lowcore might be overwritten by a second machine
 113  * check from host when host is in the machine check's high-level handling.
 114  * The size is 24 bytes.
 115  */
 116 struct mcck_volatile_info {
 117         __u64 mcic;
 118         __u64 failing_storage_address;
 119         __u32 ext_damage_code;
 120         __u32 reserved;
 121 };
 122
 123 #define CPUSTAT_STOPPED    0x80000000
 124 #define CPUSTAT_WAIT       0x10000000
 125 #define CPUSTAT_ECALL_PEND 0x08000000
 126 #define CPUSTAT_STOP_INT   0x04000000
 127 #define CPUSTAT_IO_INT     0x02000000
 128 #define CPUSTAT_EXT_INT    0x01000000
 129 #define CPUSTAT_RUNNING    0x00800000
 130 #define CPUSTAT_RETAINED   0x00400000
 131 #define CPUSTAT_TIMING_SUB 0x00020000
 132 #define CPUSTAT_SIE_SUB    0x00010000
 133 #define CPUSTAT_RRF        0x00008000
 134 #define CPUSTAT_SLSV       0x00004000
 135 #define CPUSTAT_SLSR       0x00002000
 136 #define CPUSTAT_ZARCH      0x00000800
 137 #define CPUSTAT_MCDS       0x00000100
 138 #define CPUSTAT_KSS        0x00000200
 139 #define CPUSTAT_SM         0x00000080
 140 #define CPUSTAT_IBS        0x00000040
 141 #define CPUSTAT_GED2       0x00000010
 142 #define CPUSTAT_G          0x00000008
 143 #define CPUSTAT_GED        0x00000004
 144 #define CPUSTAT_J          0x00000002
 145 #define CPUSTAT_P          0x00000001
 146
 147 struct kvm_s390_sie_block {
 148         atomic_t cpuflags;              /* 0x0000 */
 149         __u32 : 1;                      /* 0x0004 */
 150         __u32 prefix : 18;
 151         __u32 : 1;
 152         __u32 ibc : 12;
 153         __u8    reserved08[4];          /* 0x0008 */
 154 #define PROG_IN_SIE (1<<0)
 155         __u32   prog0c;                 /* 0x000c */
 156         __u8    reserved10[16];         /* 0x0010 */
 157 #define PROG_BLOCK_SIE  (1<<0)
 158 #define PROG_REQUEST    (1<<1)
 159         atomic_t prog20;                /* 0x0020 */
 160         __u8    reserved24[4];          /* 0x0024 */
 161         __u64   cputm;                  /* 0x0028 */
 162         __u64   ckc;                    /* 0x0030 */
 163         __u64   epoch;                  /* 0x0038 */
 164         __u32   svcc;                   /* 0x0040 */
 165 #define LCTL_CR0        0x8000
 166 #define LCTL_CR6        0x0200
 167 #define LCTL_CR9        0x0040
 168 #define LCTL_CR10       0x0020
 169 #define LCTL_CR11       0x0010
 170 #define LCTL_CR14       0x0002
 171         __u16   lctl;                   /* 0x0044 */
 172         __s16   icpua;                  /* 0x0046 */
 173 #define ICTL_OPEREXC    0x80000000
 174 #define ICTL_PINT       0x20000000
 175 #define ICTL_LPSW       0x00400000
 176 #define ICTL_STCTL      0x00040000
 177 #define ICTL_ISKE       0x00004000
 178 #define ICTL_SSKE       0x00002000
 179 #define ICTL_RRBE       0x00001000
 180 #define ICTL_TPROT      0x00000200
 181         __u32   ictl;                   /* 0x0048 */
 182 #define ECA_CEI         0x80000000
 183 #define ECA_IB          0x40000000
 184 #define ECA_SIGPI       0x10000000
 185 #define ECA_MVPGI       0x01000000
 186 #define ECA_AIV         0x00200000
 187 #define ECA_VX          0x00020000
 188 #define ECA_PROTEXCI    0x00002000
 189 #define ECA_SII         0x00000001
 190         __u32   eca;                    /* 0x004c */
 191 #define ICPT_INST       0x04
 192 #define ICPT_PROGI      0x08
 193 #define ICPT_INSTPROGI  0x0C
 194 #define ICPT_EXTREQ     0x10
 195 #define ICPT_EXTINT     0x14
 196 #define ICPT_IOREQ      0x18
 197 #define ICPT_WAIT       0x1c
 198 #define ICPT_VALIDITY   0x20
 199 #define ICPT_STOP       0x28
 200 #define ICPT_OPEREXC    0x2C
 201 #define ICPT_PARTEXEC   0x38
 202 #define ICPT_IOINST     0x40
 203 #define ICPT_KSS        0x5c
 204         __u8    icptcode;               /* 0x0050 */
 205         __u8    icptstatus;             /* 0x0051 */
 206         __u16   ihcpu;                  /* 0x0052 */
 207         __u8    reserved54[2];          /* 0x0054 */
 208         __u16   ipa;                    /* 0x0056 */
 209         __u32   ipb;                    /* 0x0058 */
 210         __u32   scaoh;                  /* 0x005c */
 211 #define FPF_BPBC        0x20
 212         __u8    fpf;                    /* 0x0060 */
 213 #define ECB_GS          0x40
 214 #define ECB_TE          0x10
 215 #define ECB_SRSI        0x04
 216 #define ECB_HOSTPROTINT 0x02
 217         __u8    ecb;                    /* 0x0061 */
 218 #define ECB2_CMMA       0x80
 219 #define ECB2_IEP        0x20
 220 #define ECB2_PFMFI      0x08
 221 #define ECB2_ESCA       0x04
 222         __u8    ecb2;                   /* 0x0062 */
 223 #define ECB3_DEA 0x08
 224 #define ECB3_AES 0x04
 225 #define ECB3_RI  0x01
 226         __u8    ecb3;                   /* 0x0063 */
 227         __u32   scaol;                  /* 0x0064 */
 228         __u8    reserved68;             /* 0x0068 */
 229         __u8    epdx;                   /* 0x0069 */
 230         __u8    reserved6a[2];          /* 0x006a */
 231         __u32   todpr;                  /* 0x006c */
 232 #define GISA_FORMAT1 0x00000001
 233         __u32   gd;                     /* 0x0070 */
 234         __u8    reserved74[12];         /* 0x0074 */
 235         __u64   mso;                    /* 0x0080 */
 236         __u64   msl;                    /* 0x0088 */
 237         psw_t   gpsw;                   /* 0x0090 */
 238         __u64   gg14;                   /* 0x00a0 */
 239         __u64   gg15;                   /* 0x00a8 */
 240         __u8    reservedb0[20];         /* 0x00b0 */
 241         __u16   extcpuaddr;             /* 0x00c4 */
 242         __u16   eic;                    /* 0x00c6 */
 243         __u32   reservedc8;             /* 0x00c8 */
 244         __u16   pgmilc;                 /* 0x00cc */
 245         __u16   iprcc;                  /* 0x00ce */
 246         __u32   dxc;                    /* 0x00d0 */
 247         __u16   mcn;                    /* 0x00d4 */
 248         __u8    perc;                   /* 0x00d6 */
 249         __u8    peratmid;               /* 0x00d7 */
 250         __u64   peraddr;                /* 0x00d8 */
 251         __u8    eai;                    /* 0x00e0 */
 252         __u8    peraid;                 /* 0x00e1 */
 253         __u8    oai;                    /* 0x00e2 */
 254         __u8    armid;                  /* 0x00e3 */
 255         __u8    reservede4[4];          /* 0x00e4 */
 256         __u64   tecmc;                  /* 0x00e8 */
 257         __u8    reservedf0[12];         /* 0x00f0 */
 258 #define CRYCB_FORMAT1 0x00000001
 259 #define CRYCB_FORMAT2 0x00000003
 260         __u32   crycbd;                 /* 0x00fc */
 261         __u64   gcr[16];                /* 0x0100 */
 262         __u64   gbea;                   /* 0x0180 */
 263         __u8    reserved188[8];         /* 0x0188 */
 264         __u64   sdnxo;                  /* 0x0190 */
 265         __u8    reserved198[8];         /* 0x0198 */
 266         __u32   fac;                    /* 0x01a0 */
 267         __u8    reserved1a4[20];        /* 0x01a4 */
 268         __u64   cbrlo;                  /* 0x01b8 */
 269         __u8    reserved1c0[8];         /* 0x01c0 */
 270 #define ECD_HOSTREGMGMT 0x20000000
 271 #define ECD_MEF         0x08000000
 272         __u32   ecd;                    /* 0x01c8 */
 273         __u8    reserved1cc[18];        /* 0x01cc */
 274         __u64   pp;                     /* 0x01de */
 275         __u8    reserved1e6[2];         /* 0x01e6 */
 276         __u64   itdba;                  /* 0x01e8 */
 277         __u64   riccbd;                 /* 0x01f0 */
 278         __u64   gvrd;                   /* 0x01f8 */
 279 } __attribute__((packed));
 280
 281 struct kvm_s390_itdb {
 282         __u8    data[256];
 283 };
 284
 285 struct sie_page {
 286         struct kvm_s390_sie_block sie_block;
 287         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 288         __u8 reserved218[1000];         /* 0x0218 */
 289         struct kvm_s390_itdb itdb;      /* 0x0600 */
 290         __u8 reserved700[2304];         /* 0x0700 */
 291 };
 292
 293 struct kvm_vcpu_stat {
 294         u64 exit_userspace;
 295         u64 exit_null;
 296         u64 exit_external_request;
 297         u64 exit_external_interrupt;
 298         u64 exit_stop_request;
 299         u64 exit_validity;
 300         u64 exit_instruction;
 301         u64 exit_pei;
 302         u64 halt_successful_poll;
 303         u64 halt_attempted_poll;
 304         u64 halt_poll_invalid;
 305         u64 halt_wakeup;
 306         u64 instruction_lctl;
 307         u64 instruction_lctlg;
 308         u64 instruction_stctl;
 309         u64 instruction_stctg;
 310         u64 exit_program_interruption;
 311         u64 exit_instr_and_program;
 312         u64 exit_operation_exception;
 313         u64 deliver_external_call;
 314         u64 deliver_emergency_signal;
 315         u64 deliver_service_signal;
 316         u64 deliver_virtio_interrupt;
 317         u64 deliver_stop_signal;
 318         u64 deliver_prefix_signal;
 319         u64 deliver_restart_signal;
 320         u64 deliver_program_int;
 321         u64 deliver_io_int;
 322         u64 exit_wait_state;
 323         u64 instruction_epsw;
 324         u64 instruction_gs;
 325         u64 instruction_io_other;
 326         u64 instruction_lpsw;
 327         u64 instruction_lpswe;
 328         u64 instruction_pfmf;
 329         u64 instruction_ptff;
 330         u64 instruction_sck;
 331         u64 instruction_sckpf;
 332         u64 instruction_stidp;
 333         u64 instruction_spx;
 334         u64 instruction_stpx;
 335         u64 instruction_stap;
 336         u64 instruction_iske;
 337         u64 instruction_ri;
 338         u64 instruction_rrbe;
 339         u64 instruction_sske;
 340         u64 instruction_ipte_interlock;
 341         u64 instruction_stsi;
 342         u64 instruction_stfl;
 343         u64 instruction_tb;
 344         u64 instruction_tpi;
 345         u64 instruction_tprot;
 346         u64 instruction_tsch;
 347         u64 instruction_sie;
 348         u64 instruction_essa;
 349         u64 instruction_sthyi;
 350         u64 instruction_sigp_sense;
 351         u64 instruction_sigp_sense_running;
 352         u64 instruction_sigp_external_call;
 353         u64 instruction_sigp_emergency;
 354         u64 instruction_sigp_cond_emergency;
 355         u64 instruction_sigp_start;
 356         u64 instruction_sigp_stop;
 357         u64 instruction_sigp_stop_store_status;
 358         u64 instruction_sigp_store_status;
 359         u64 instruction_sigp_store_adtl_status;
 360         u64 instruction_sigp_arch;
 361         u64 instruction_sigp_prefix;
 362         u64 instruction_sigp_restart;
 363         u64 instruction_sigp_init_cpu_reset;
 364         u64 instruction_sigp_cpu_reset;
 365         u64 instruction_sigp_unknown;
 366         u64 diagnose_10;
 367         u64 diagnose_44;
 368         u64 diagnose_9c;
 369         u64 diagnose_258;
 370         u64 diagnose_308;
 371         u64 diagnose_500;
 372         u64 diagnose_other;
 373 };
 374
 375 #define PGM_OPERATION                   0x01
 376 #define PGM_PRIVILEGED_OP               0x02
 377 #define PGM_EXECUTE                     0x03
 378 #define PGM_PROTECTION                  0x04
 379 #define PGM_ADDRESSING                  0x05
 380 #define PGM_SPECIFICATION               0x06
 381 #define PGM_DATA                        0x07
 382 #define PGM_FIXED_POINT_OVERFLOW        0x08
 383 #define PGM_FIXED_POINT_DIVIDE          0x09
 384 #define PGM_DECIMAL_OVERFLOW            0x0a
 385 #define PGM_DECIMAL_DIVIDE              0x0b
 386 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 387 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 388 #define PGM_HFP_SIGNIFICANCE            0x0e
 389 #define PGM_HFP_DIVIDE                  0x0f
 390 #define PGM_SEGMENT_TRANSLATION         0x10
 391 #define PGM_PAGE_TRANSLATION            0x11
 392 #define PGM_TRANSLATION_SPEC            0x12
 393 #define PGM_SPECIAL_OPERATION           0x13
 394 #define PGM_OPERAND                     0x15
 395 #define PGM_TRACE_TABEL                 0x16
 396 #define PGM_VECTOR_PROCESSING           0x1b
 397 #define PGM_SPACE_SWITCH                0x1c
 398 #define PGM_HFP_SQUARE_ROOT             0x1d
 399 #define PGM_PC_TRANSLATION_SPEC         0x1f
 400 #define PGM_AFX_TRANSLATION             0x20
 401 #define PGM_ASX_TRANSLATION             0x21
 402 #define PGM_LX_TRANSLATION              0x22
 403 #define PGM_EX_TRANSLATION              0x23
 404 #define PGM_PRIMARY_AUTHORITY           0x24
 405 #define PGM_SECONDARY_AUTHORITY         0x25
 406 #define PGM_LFX_TRANSLATION             0x26
 407 #define PGM_LSX_TRANSLATION             0x27
 408 #define PGM_ALET_SPECIFICATION          0x28
 409 #define PGM_ALEN_TRANSLATION            0x29
 410 #define PGM_ALE_SEQUENCE                0x2a
 411 #define PGM_ASTE_VALIDITY               0x2b
 412 #define PGM_ASTE_SEQUENCE               0x2c
 413 #define PGM_EXTENDED_AUTHORITY          0x2d
 414 #define PGM_LSTE_SEQUENCE               0x2e
 415 #define PGM_ASTE_INSTANCE               0x2f
 416 #define PGM_STACK_FULL                  0x30
 417 #define PGM_STACK_EMPTY                 0x31
 418 #define PGM_STACK_SPECIFICATION         0x32
 419 #define PGM_STACK_TYPE                  0x33
 420 #define PGM_STACK_OPERATION             0x34
 421 #define PGM_ASCE_TYPE                   0x38
 422 #define PGM_REGION_FIRST_TRANS          0x39
 423 #define PGM_REGION_SECOND_TRANS         0x3a
 424 #define PGM_REGION_THIRD_TRANS          0x3b
 425 #define PGM_MONITOR                     0x40
 426 #define PGM_PER                         0x80
 427 #define PGM_CRYPTO_OPERATION            0x119
 428
 429 /* irq types in ascend order of priorities */
 430 enum irq_types {
 431         IRQ_PEND_SET_PREFIX = 0,
 432         IRQ_PEND_RESTART,
 433         IRQ_PEND_SIGP_STOP,
 434         IRQ_PEND_IO_ISC_7,
 435         IRQ_PEND_IO_ISC_6,
 436         IRQ_PEND_IO_ISC_5,
 437         IRQ_PEND_IO_ISC_4,
 438         IRQ_PEND_IO_ISC_3,
 439         IRQ_PEND_IO_ISC_2,
 440         IRQ_PEND_IO_ISC_1,
 441         IRQ_PEND_IO_ISC_0,
 442         IRQ_PEND_VIRTIO,
 443         IRQ_PEND_PFAULT_DONE,
 444         IRQ_PEND_PFAULT_INIT,
 445         IRQ_PEND_EXT_HOST,
 446         IRQ_PEND_EXT_SERVICE,
 447         IRQ_PEND_EXT_TIMING,
 448         IRQ_PEND_EXT_CPU_TIMER,
 449         IRQ_PEND_EXT_CLOCK_COMP,
 450         IRQ_PEND_EXT_EXTERNAL,
 451         IRQ_PEND_EXT_EMERGENCY,
 452         IRQ_PEND_EXT_MALFUNC,
 453         IRQ_PEND_EXT_IRQ_KEY,
 454         IRQ_PEND_MCHK_REP,
 455         IRQ_PEND_PROG,
 456         IRQ_PEND_SVC,
 457         IRQ_PEND_MCHK_EX,
 458         IRQ_PEND_COUNT
 459 };
 460
 461 /* We have 2M for virtio device descriptor pages. Smallest amount of
 462  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 463  */
 464 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 465
 466 /*
 467  * Repressible (non-floating) machine check interrupts
 468  * subclass bits in MCIC
 469  */
 470 #define MCHK_EXTD_BIT 58
 471 #define MCHK_DEGR_BIT 56
 472 #define MCHK_WARN_BIT 55
 473 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 474                        (1UL << MCHK_EXTD_BIT) | \
 475                        (1UL << MCHK_WARN_BIT))
 476
 477 /* Exigent machine check interrupts subclass bits in MCIC */
 478 #define MCHK_SD_BIT 63
 479 #define MCHK_PD_BIT 62
 480 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 481
 482 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 483                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 484                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 485                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 486                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 487                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 488                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 489                            (1UL << IRQ_PEND_EXT_HOST)       | \
 490                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 491                            (1UL << IRQ_PEND_VIRTIO)         | \
 492                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 493                            (1UL << IRQ_PEND_PFAULT_DONE))
 494
 495 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 496                           (1UL << IRQ_PEND_IO_ISC_1) | \
 497                           (1UL << IRQ_PEND_IO_ISC_2) | \
 498                           (1UL << IRQ_PEND_IO_ISC_3) | \
 499                           (1UL << IRQ_PEND_IO_ISC_4) | \
 500                           (1UL << IRQ_PEND_IO_ISC_5) | \
 501                           (1UL << IRQ_PEND_IO_ISC_6) | \
 502                           (1UL << IRQ_PEND_IO_ISC_7))
 503
 504 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 505                             (1UL << IRQ_PEND_MCHK_EX))
 506
 507 struct kvm_s390_interrupt_info {
 508         struct list_head list;
 509         u64     type;
 510         union {
 511                 struct kvm_s390_io_info io;
 512                 struct kvm_s390_ext_info ext;
 513                 struct kvm_s390_pgm_info pgm;
 514                 struct kvm_s390_emerg_info emerg;
 515                 struct kvm_s390_extcall_info extcall;
 516                 struct kvm_s390_prefix_info prefix;
 517                 struct kvm_s390_stop_info stop;
 518                 struct kvm_s390_mchk_info mchk;
 519         };
 520 };
 521
 522 struct kvm_s390_irq_payload {
 523         struct kvm_s390_io_info io;
 524         struct kvm_s390_ext_info ext;
 525         struct kvm_s390_pgm_info pgm;
 526         struct kvm_s390_emerg_info emerg;
 527         struct kvm_s390_extcall_info extcall;
 528         struct kvm_s390_prefix_info prefix;
 529         struct kvm_s390_stop_info stop;
 530         struct kvm_s390_mchk_info mchk;
 531 };
 532
 533 struct kvm_s390_local_interrupt {
 534         spinlock_t lock;
 535         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 536         struct kvm_s390_irq_payload irq;
 537         unsigned long pending_irqs;
 538 };
 539
 540 #define FIRQ_LIST_IO_ISC_0 0
 541 #define FIRQ_LIST_IO_ISC_1 1
 542 #define FIRQ_LIST_IO_ISC_2 2
 543 #define FIRQ_LIST_IO_ISC_3 3
 544 #define FIRQ_LIST_IO_ISC_4 4
 545 #define FIRQ_LIST_IO_ISC_5 5
 546 #define FIRQ_LIST_IO_ISC_6 6
 547 #define FIRQ_LIST_IO_ISC_7 7
 548 #define FIRQ_LIST_PFAULT   8
 549 #define FIRQ_LIST_VIRTIO   9
 550 #define FIRQ_LIST_COUNT   10
 551 #define FIRQ_CNTR_IO       0
 552 #define FIRQ_CNTR_SERVICE  1
 553 #define FIRQ_CNTR_VIRTIO   2
 554 #define FIRQ_CNTR_PFAULT   3
 555 #define FIRQ_MAX_COUNT     4
 556
 557 /* mask the AIS mode for a given ISC */
 558 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 559
 560 #define KVM_S390_AIS_MODE_ALL    0
 561 #define KVM_S390_AIS_MODE_SINGLE 1
 562
 563 struct kvm_s390_float_interrupt {
 564         unsigned long pending_irqs;
 565         spinlock_t lock;
 566         struct list_head lists[FIRQ_LIST_COUNT];
 567         int counters[FIRQ_MAX_COUNT];
 568         struct kvm_s390_mchk_info mchk;
 569         struct kvm_s390_ext_info srv_signal;
 570         int next_rr_cpu;
 571         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 572         struct mutex ais_lock;
 573         u8 simm;
 574         u8 nimm;
 575 };
 576
 577 struct kvm_hw_wp_info_arch {
 578         unsigned long addr;
 579         unsigned long phys_addr;
 580         int len;
 581         char *old_data;
 582 };
 583
 584 struct kvm_hw_bp_info_arch {
 585         unsigned long addr;
 586         int len;
 587 };
 588
 589 /*
 590  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 591  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 592  * arch/s390/include/uapi/asm/kvm.h
 593  */
 594 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 595
 596 #define guestdbg_enabled(vcpu) \
 597                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 598 #define guestdbg_sstep_enabled(vcpu) \
 599                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 600 #define guestdbg_hw_bp_enabled(vcpu) \
 601                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 602 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 603                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 604
 605 struct kvm_guestdbg_info_arch {
 606         unsigned long cr0;
 607         unsigned long cr9;
 608         unsigned long cr10;
 609         unsigned long cr11;
 610         struct kvm_hw_bp_info_arch *hw_bp_info;
 611         struct kvm_hw_wp_info_arch *hw_wp_info;
 612         int nr_hw_bp;
 613         int nr_hw_wp;
 614         unsigned long last_bp;
 615 };
 616
 617 struct kvm_vcpu_arch {
 618         struct kvm_s390_sie_block *sie_block;
 619         /* if vsie is active, currently executed shadow sie control block */
 620         struct kvm_s390_sie_block *vsie_block;
 621         unsigned int      host_acrs[NUM_ACRS];
 622         struct gs_cb      *host_gscb;
 623         struct fpu        host_fpregs;
 624         struct kvm_s390_local_interrupt local_int;
 625         struct hrtimer    ckc_timer;
 626         struct kvm_s390_pgm_info pgm;
 627         struct gmap *gmap;
 628         /* backup location for the currently enabled gmap when scheduled out */
 629         struct gmap *enabled_gmap;
 630         struct kvm_guestdbg_info_arch guestdbg;
 631         unsigned long pfault_token;
 632         unsigned long pfault_select;
 633         unsigned long pfault_compare;
 634         bool cputm_enabled;
 635         /*
 636          * The seqcount protects updates to cputm_start and sie_block.cputm,
 637          * this way we can have non-blocking reads with consistent values.
 638          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 639          * values and to start/stop/enable/disable cpu timer accounting.
 640          */
 641         seqcount_t cputm_seqcount;
 642         __u64 cputm_start;
 643         bool gs_enabled;
 644 };
 645
 646 struct kvm_vm_stat {
 647         ulong remote_tlb_flush;
 648 };
 649
 650 struct kvm_arch_memory_slot {
 651 };
 652
 653 struct s390_map_info {
 654         struct list_head list;
 655         __u64 guest_addr;
 656         __u64 addr;
 657         struct page *page;
 658 };
 659
 660 struct s390_io_adapter {
 661         unsigned int id;
 662         int isc;
 663         bool maskable;
 664         bool masked;
 665         bool swap;
 666         bool suppressible;
 667         struct rw_semaphore maps_lock;
 668         struct list_head maps;
 669         atomic_t nr_maps;
 670 };
 671
 672 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 673 #define MAX_S390_ADAPTER_MAPS 256
 674
 675 /* maximum size of facilities and facility mask is 2k bytes */
 676 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 677 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 678         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 679 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 680 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 681         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 682
 683 struct kvm_s390_cpu_model {
 684         /* facility mask supported by kvm & hosting machine */
 685         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 686         /* facility list requested by guest (in dma page) */
 687         __u64 *fac_list;
 688         u64 cpuid;
 689         unsigned short ibc;
 690 };
 691
 692 struct kvm_s390_crypto {
 693         struct kvm_s390_crypto_cb *crycb;
 694         __u32 crycbd;
 695         __u8 aes_kw;
 696         __u8 dea_kw;
 697 };
 698
 699 #define APCB0_MASK_SIZE 1
 700 struct kvm_s390_apcb0 {
 701         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 702         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 703         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 704         __u64 reserved18;                       /* 0x0018 */
 705 };
 706
 707 #define APCB1_MASK_SIZE 4
 708 struct kvm_s390_apcb1 {
 709         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 710         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 711         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 712         __u64 reserved60[4];                    /* 0x0060 */
 713 };
 714
 715 struct kvm_s390_crypto_cb {
 716         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 717         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 718         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 719         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 720         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 721 };
 722
 723 struct kvm_s390_gisa {
 724         union {
 725                 struct { /* common to all formats */
 726                         u32 next_alert;
 727                         u8  ipm;
 728                         u8  reserved01[2];
 729                         u8  iam;
 730                 };
 731                 struct { /* format 0 */
 732                         u32 next_alert;
 733                         u8  ipm;
 734                         u8  reserved01;
 735                         u8  : 6;
 736                         u8  g : 1;
 737                         u8  c : 1;
 738                         u8  iam;
 739                         u8  reserved02[4];
 740                         u32 airq_count;
 741                 } g0;
 742                 struct { /* format 1 */
 743                         u32 next_alert;
 744                         u8  ipm;
 745                         u8  simm;
 746                         u8  nimm;
 747                         u8  iam;
 748                         u8  aism[8];
 749                         u8  : 6;
 750                         u8  g : 1;
 751                         u8  c : 1;
 752                         u8  reserved03[11];
 753                         u32 airq_count;
 754                 } g1;
 755         };
 756 };
 757
 758 /*
 759  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 760  * gisa need 31bit addresses in the sie control block.
 761  */
 762 struct sie_page2 {
 763         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 764         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 765         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 766         u8 reserved920[0x1000 - 0x920];                 /* 0x0920 */
 767 };
 768
 769 struct kvm_s390_vsie {
 770         struct mutex mutex;
 771         struct radix_tree_root addr_to_page;
 772         int page_count;
 773         int next;
 774         struct page *pages[KVM_MAX_VCPUS];
 775 };
 776
 777 struct kvm_s390_migration_state {
 778         unsigned long bitmap_size;      /* in bits (number of guest pages) */
 779         atomic64_t dirty_pages;         /* number of dirty pages */
 780         unsigned long *pgste_bitmap;
 781 };
 782
 783 struct kvm_arch{
 784         void *sca;
 785         int use_esca;
 786         rwlock_t sca_lock;
 787         debug_info_t *dbf;
 788         struct kvm_s390_float_interrupt float_int;
 789         struct kvm_device *flic;
 790         struct gmap *gmap;
 791         unsigned long mem_limit;
 792         int css_support;
 793         int use_irqchip;
 794         int use_cmma;
 795         int user_cpu_state_ctrl;
 796         int user_sigp;
 797         int user_stsi;
 798         int user_instr0;
 799         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 800         wait_queue_head_t ipte_wq;
 801         int ipte_lock_count;
 802         struct mutex ipte_mutex;
 803         spinlock_t start_stop_lock;
 804         struct sie_page2 *sie_page2;
 805         struct kvm_s390_cpu_model model;
 806         struct kvm_s390_crypto crypto;
 807         struct kvm_s390_vsie vsie;
 808         u8 epdx;
 809         u64 epoch;
 810         struct kvm_s390_migration_state *migration_state;
 811         /* subset of available cpu features enabled by user space */
 812         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 813         struct kvm_s390_gisa *gisa;
 814 };
 815
 816 #define KVM_HVA_ERR_BAD         (-1UL)
 817 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 818
 819 static inline bool kvm_is_error_hva(unsigned long addr)
 820 {
 821         return IS_ERR_VALUE(addr);
 822 }
 823
 824 #define ASYNC_PF_PER_VCPU       64
 825 struct kvm_arch_async_pf {
 826         unsigned long pfault_token;
 827 };
 828
 829 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 830
 831 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 832                                struct kvm_async_pf *work);
 833
 834 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 835                                      struct kvm_async_pf *work);
 836
 837 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 838                                  struct kvm_async_pf *work);
 839
 840 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 841 extern char sie_exit;
 842
 843 static inline void kvm_arch_hardware_disable(void) {}
 844 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 845 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 846 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 847 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 848 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 849                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 850 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 851 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 852 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 853                 struct kvm_memory_slot *slot) {}
 854 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 855 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 856
 857 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 858
 859 #endif