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 <linux/module.h>
  22 #include <linux/pci.h>
  23 #include <linux/mmu_notifier.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
  34 /*
  35  * These seem to be used for allocating ->chip in the routing table, which we
  36  * don't use. 1 is as small as we can get to reduce the needed memory. If we
  37  * need to look at ->chip later on, we'll need to revisit this.
  38  */
  39 #define KVM_NR_IRQCHIPS 1
  40 #define KVM_IRQCHIP_NUM_PINS 1
  41 #define KVM_HALT_POLL_NS_DEFAULT 50000
  42
  43 /* s390-specific vcpu->requests bit members */
  44 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
  45 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
  46 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
  47 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
  48 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
  49 #define KVM_REQ_VSIE_RESTART    KVM_ARCH_REQ(5)
  50 #define KVM_REQ_REFRESH_GUEST_PREFIX    \
  51         KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
  52
  53 #define SIGP_CTRL_C             0x80
  54 #define SIGP_CTRL_SCN_MASK      0x3f
  55
  56 union bsca_sigp_ctrl {
  57         __u8 value;
  58         struct {
  59                 __u8 c : 1;
  60                 __u8 r : 1;
  61                 __u8 scn : 6;
  62         };
  63 };
  64
  65 union esca_sigp_ctrl {
  66         __u16 value;
  67         struct {
  68                 __u8 c : 1;
  69                 __u8 reserved: 7;
  70                 __u8 scn;
  71         };
  72 };
  73
  74 struct esca_entry {
  75         union esca_sigp_ctrl sigp_ctrl;
  76         __u16   reserved1[3];
  77         __u64   sda;
  78         __u64   reserved2[6];
  79 };
  80
  81 struct bsca_entry {
  82         __u8    reserved0;
  83         union bsca_sigp_ctrl    sigp_ctrl;
  84         __u16   reserved[3];
  85         __u64   sda;
  86         __u64   reserved2[2];
  87 };
  88
  89 union ipte_control {
  90         unsigned long val;
  91         struct {
  92                 unsigned long k  : 1;
  93                 unsigned long kh : 31;
  94                 unsigned long kg : 32;
  95         };
  96 };
  97
  98 union sca_utility {
  99         __u16 val;
 100         struct {
 101                 __u16 mtcr : 1;
 102                 __u16 reserved : 15;
 103         };
 104 };
 105
 106 struct bsca_block {
 107         union ipte_control ipte_control;
 108         __u64   reserved[5];
 109         __u64   mcn;
 110         union sca_utility utility;
 111         __u8    reserved2[6];
 112         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
 113 };
 114
 115 struct esca_block {
 116         union ipte_control ipte_control;
 117         __u64   reserved1[6];
 118         union sca_utility utility;
 119         __u8    reserved2[6];
 120         __u64   mcn[4];
 121         __u64   reserved3[20];
 122         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 123 };
 124
 125 /*
 126  * This struct is used to store some machine check info from lowcore
 127  * for machine checks that happen while the guest is running.
 128  * This info in host's lowcore might be overwritten by a second machine
 129  * check from host when host is in the machine check's high-level handling.
 130  * The size is 24 bytes.
 131  */
 132 struct mcck_volatile_info {
 133         __u64 mcic;
 134         __u64 failing_storage_address;
 135         __u32 ext_damage_code;
 136         __u32 reserved;
 137 };
 138
 139 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
 140                           CR0_MEASUREMENT_ALERT_SUBMASK)
 141 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
 142                            CR14_EXTERNAL_DAMAGE_SUBMASK)
 143
 144 #define SIDAD_SIZE_MASK         0xff
 145 #define sida_origin(sie_block) \
 146         ((sie_block)->sidad & PAGE_MASK)
 147 #define sida_size(sie_block) \
 148         ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
 149
 150 #define CPUSTAT_STOPPED    0x80000000
 151 #define CPUSTAT_WAIT       0x10000000
 152 #define CPUSTAT_ECALL_PEND 0x08000000
 153 #define CPUSTAT_STOP_INT   0x04000000
 154 #define CPUSTAT_IO_INT     0x02000000
 155 #define CPUSTAT_EXT_INT    0x01000000
 156 #define CPUSTAT_RUNNING    0x00800000
 157 #define CPUSTAT_RETAINED   0x00400000
 158 #define CPUSTAT_TIMING_SUB 0x00020000
 159 #define CPUSTAT_SIE_SUB    0x00010000
 160 #define CPUSTAT_RRF        0x00008000
 161 #define CPUSTAT_SLSV       0x00004000
 162 #define CPUSTAT_SLSR       0x00002000
 163 #define CPUSTAT_ZARCH      0x00000800
 164 #define CPUSTAT_MCDS       0x00000100
 165 #define CPUSTAT_KSS        0x00000200
 166 #define CPUSTAT_SM         0x00000080
 167 #define CPUSTAT_IBS        0x00000040
 168 #define CPUSTAT_GED2       0x00000010
 169 #define CPUSTAT_G          0x00000008
 170 #define CPUSTAT_GED        0x00000004
 171 #define CPUSTAT_J          0x00000002
 172 #define CPUSTAT_P          0x00000001
 173
 174 struct kvm_s390_sie_block {
 175         atomic_t cpuflags;              /* 0x0000 */
 176         __u32 : 1;                      /* 0x0004 */
 177         __u32 prefix : 18;
 178         __u32 : 1;
 179         __u32 ibc : 12;
 180         __u8    reserved08[4];          /* 0x0008 */
 181 #define PROG_IN_SIE (1<<0)
 182         __u32   prog0c;                 /* 0x000c */
 183         union {
 184                 __u8    reserved10[16];         /* 0x0010 */
 185                 struct {
 186                         __u64   pv_handle_cpu;
 187                         __u64   pv_handle_config;
 188                 };
 189         };
 190 #define PROG_BLOCK_SIE  (1<<0)
 191 #define PROG_REQUEST    (1<<1)
 192         atomic_t prog20;                /* 0x0020 */
 193         __u8    reserved24[4];          /* 0x0024 */
 194         __u64   cputm;                  /* 0x0028 */
 195         __u64   ckc;                    /* 0x0030 */
 196         __u64   epoch;                  /* 0x0038 */
 197         __u32   svcc;                   /* 0x0040 */
 198 #define LCTL_CR0        0x8000
 199 #define LCTL_CR6        0x0200
 200 #define LCTL_CR9        0x0040
 201 #define LCTL_CR10       0x0020
 202 #define LCTL_CR11       0x0010
 203 #define LCTL_CR14       0x0002
 204         __u16   lctl;                   /* 0x0044 */
 205         __s16   icpua;                  /* 0x0046 */
 206 #define ICTL_OPEREXC    0x80000000
 207 #define ICTL_PINT       0x20000000
 208 #define ICTL_LPSW       0x00400000
 209 #define ICTL_STCTL      0x00040000
 210 #define ICTL_ISKE       0x00004000
 211 #define ICTL_SSKE       0x00002000
 212 #define ICTL_RRBE       0x00001000
 213 #define ICTL_TPROT      0x00000200
 214         __u32   ictl;                   /* 0x0048 */
 215 #define ECA_CEI         0x80000000
 216 #define ECA_IB          0x40000000
 217 #define ECA_SIGPI       0x10000000
 218 #define ECA_MVPGI       0x01000000
 219 #define ECA_AIV         0x00200000
 220 #define ECA_VX          0x00020000
 221 #define ECA_PROTEXCI    0x00002000
 222 #define ECA_APIE        0x00000008
 223 #define ECA_SII         0x00000001
 224         __u32   eca;                    /* 0x004c */
 225 #define ICPT_INST       0x04
 226 #define ICPT_PROGI      0x08
 227 #define ICPT_INSTPROGI  0x0C
 228 #define ICPT_EXTREQ     0x10
 229 #define ICPT_EXTINT     0x14
 230 #define ICPT_IOREQ      0x18
 231 #define ICPT_WAIT       0x1c
 232 #define ICPT_VALIDITY   0x20
 233 #define ICPT_STOP       0x28
 234 #define ICPT_OPEREXC    0x2C
 235 #define ICPT_PARTEXEC   0x38
 236 #define ICPT_IOINST     0x40
 237 #define ICPT_KSS        0x5c
 238 #define ICPT_MCHKREQ    0x60
 239 #define ICPT_INT_ENABLE 0x64
 240 #define ICPT_PV_INSTR   0x68
 241 #define ICPT_PV_NOTIFY  0x6c
 242 #define ICPT_PV_PREF    0x70
 243         __u8    icptcode;               /* 0x0050 */
 244         __u8    icptstatus;             /* 0x0051 */
 245         __u16   ihcpu;                  /* 0x0052 */
 246         __u8    reserved54;             /* 0x0054 */
 247 #define IICTL_CODE_NONE          0x00
 248 #define IICTL_CODE_MCHK          0x01
 249 #define IICTL_CODE_EXT           0x02
 250 #define IICTL_CODE_IO            0x03
 251 #define IICTL_CODE_RESTART       0x04
 252 #define IICTL_CODE_SPECIFICATION 0x10
 253 #define IICTL_CODE_OPERAND       0x11
 254         __u8    iictl;                  /* 0x0055 */
 255         __u16   ipa;                    /* 0x0056 */
 256         __u32   ipb;                    /* 0x0058 */
 257         __u32   scaoh;                  /* 0x005c */
 258 #define FPF_BPBC        0x20
 259         __u8    fpf;                    /* 0x0060 */
 260 #define ECB_GS          0x40
 261 #define ECB_TE          0x10
 262 #define ECB_SPECI       0x08
 263 #define ECB_SRSI        0x04
 264 #define ECB_HOSTPROTINT 0x02
 265 #define ECB_PTF         0x01
 266         __u8    ecb;                    /* 0x0061 */
 267 #define ECB2_CMMA       0x80
 268 #define ECB2_IEP        0x20
 269 #define ECB2_PFMFI      0x08
 270 #define ECB2_ESCA       0x04
 271 #define ECB2_ZPCI_LSI   0x02
 272         __u8    ecb2;                   /* 0x0062 */
 273 #define ECB3_AISI       0x20
 274 #define ECB3_AISII      0x10
 275 #define ECB3_DEA 0x08
 276 #define ECB3_AES 0x04
 277 #define ECB3_RI  0x01
 278         __u8    ecb3;                   /* 0x0063 */
 279         __u32   scaol;                  /* 0x0064 */
 280         __u8    sdf;                    /* 0x0068 */
 281         __u8    epdx;                   /* 0x0069 */
 282         __u8    cpnc;                   /* 0x006a */
 283         __u8    reserved6b;             /* 0x006b */
 284         __u32   todpr;                  /* 0x006c */
 285 #define GISA_FORMAT1 0x00000001
 286         __u32   gd;                     /* 0x0070 */
 287         __u8    reserved74[12];         /* 0x0074 */
 288         __u64   mso;                    /* 0x0080 */
 289         __u64   msl;                    /* 0x0088 */
 290         psw_t   gpsw;                   /* 0x0090 */
 291         __u64   gg14;                   /* 0x00a0 */
 292         __u64   gg15;                   /* 0x00a8 */
 293         __u8    reservedb0[8];          /* 0x00b0 */
 294 #define HPID_KVM        0x4
 295 #define HPID_VSIE       0x5
 296         __u8    hpid;                   /* 0x00b8 */
 297         __u8    reservedb9[7];          /* 0x00b9 */
 298         union {
 299                 struct {
 300                         __u32   eiparams;       /* 0x00c0 */
 301                         __u16   extcpuaddr;     /* 0x00c4 */
 302                         __u16   eic;            /* 0x00c6 */
 303                 };
 304                 __u64   mcic;                   /* 0x00c0 */
 305         } __packed;
 306         __u32   reservedc8;             /* 0x00c8 */
 307         union {
 308                 struct {
 309                         __u16   pgmilc;         /* 0x00cc */
 310                         __u16   iprcc;          /* 0x00ce */
 311                 };
 312                 __u32   edc;                    /* 0x00cc */
 313         } __packed;
 314         union {
 315                 struct {
 316                         __u32   dxc;            /* 0x00d0 */
 317                         __u16   mcn;            /* 0x00d4 */
 318                         __u8    perc;           /* 0x00d6 */
 319                         __u8    peratmid;       /* 0x00d7 */
 320                 };
 321                 __u64   faddr;                  /* 0x00d0 */
 322         } __packed;
 323         __u64   peraddr;                /* 0x00d8 */
 324         __u8    eai;                    /* 0x00e0 */
 325         __u8    peraid;                 /* 0x00e1 */
 326         __u8    oai;                    /* 0x00e2 */
 327         __u8    armid;                  /* 0x00e3 */
 328         __u8    reservede4[4];          /* 0x00e4 */
 329         union {
 330                 __u64   tecmc;          /* 0x00e8 */
 331                 struct {
 332                         __u16   subchannel_id;  /* 0x00e8 */
 333                         __u16   subchannel_nr;  /* 0x00ea */
 334                         __u32   io_int_parm;    /* 0x00ec */
 335                         __u32   io_int_word;    /* 0x00f0 */
 336                 };
 337         } __packed;
 338         __u8    reservedf4[8];          /* 0x00f4 */
 339 #define CRYCB_FORMAT_MASK 0x00000003
 340 #define CRYCB_FORMAT0 0x00000000
 341 #define CRYCB_FORMAT1 0x00000001
 342 #define CRYCB_FORMAT2 0x00000003
 343         __u32   crycbd;                 /* 0x00fc */
 344         __u64   gcr[16];                /* 0x0100 */
 345         union {
 346                 __u64   gbea;           /* 0x0180 */
 347                 __u64   sidad;
 348         };
 349         __u8    reserved188[8];         /* 0x0188 */
 350         __u64   sdnxo;                  /* 0x0190 */
 351         __u8    reserved198[8];         /* 0x0198 */
 352         __u32   fac;                    /* 0x01a0 */
 353         __u8    reserved1a4[20];        /* 0x01a4 */
 354         __u64   cbrlo;                  /* 0x01b8 */
 355         __u8    reserved1c0[8];         /* 0x01c0 */
 356 #define ECD_HOSTREGMGMT 0x20000000
 357 #define ECD_MEF         0x08000000
 358 #define ECD_ETOKENF     0x02000000
 359 #define ECD_ECC         0x00200000
 360         __u32   ecd;                    /* 0x01c8 */
 361         __u8    reserved1cc[18];        /* 0x01cc */
 362         __u64   pp;                     /* 0x01de */
 363         __u8    reserved1e6[2];         /* 0x01e6 */
 364         __u64   itdba;                  /* 0x01e8 */
 365         __u64   riccbd;                 /* 0x01f0 */
 366         __u64   gvrd;                   /* 0x01f8 */
 367 } __packed __aligned(512);
 368
 369 struct kvm_s390_itdb {
 370         __u8    data[256];
 371 };
 372
 373 struct sie_page {
 374         struct kvm_s390_sie_block sie_block;
 375         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 376         __u8 reserved218[360];          /* 0x0218 */
 377         __u64 pv_grregs[16];            /* 0x0380 */
 378         __u8 reserved400[512];          /* 0x0400 */
 379         struct kvm_s390_itdb itdb;      /* 0x0600 */
 380         __u8 reserved700[2304];         /* 0x0700 */
 381 };
 382
 383 struct kvm_vcpu_stat {
 384         struct kvm_vcpu_stat_generic generic;
 385         u64 exit_userspace;
 386         u64 exit_null;
 387         u64 exit_external_request;
 388         u64 exit_io_request;
 389         u64 exit_external_interrupt;
 390         u64 exit_stop_request;
 391         u64 exit_validity;
 392         u64 exit_instruction;
 393         u64 exit_pei;
 394         u64 halt_no_poll_steal;
 395         u64 instruction_lctl;
 396         u64 instruction_lctlg;
 397         u64 instruction_stctl;
 398         u64 instruction_stctg;
 399         u64 exit_program_interruption;
 400         u64 exit_instr_and_program;
 401         u64 exit_operation_exception;
 402         u64 deliver_ckc;
 403         u64 deliver_cputm;
 404         u64 deliver_external_call;
 405         u64 deliver_emergency_signal;
 406         u64 deliver_service_signal;
 407         u64 deliver_virtio;
 408         u64 deliver_stop_signal;
 409         u64 deliver_prefix_signal;
 410         u64 deliver_restart_signal;
 411         u64 deliver_program;
 412         u64 deliver_io;
 413         u64 deliver_machine_check;
 414         u64 exit_wait_state;
 415         u64 inject_ckc;
 416         u64 inject_cputm;
 417         u64 inject_external_call;
 418         u64 inject_emergency_signal;
 419         u64 inject_mchk;
 420         u64 inject_pfault_init;
 421         u64 inject_program;
 422         u64 inject_restart;
 423         u64 inject_set_prefix;
 424         u64 inject_stop_signal;
 425         u64 instruction_epsw;
 426         u64 instruction_gs;
 427         u64 instruction_io_other;
 428         u64 instruction_lpsw;
 429         u64 instruction_lpswe;
 430         u64 instruction_pfmf;
 431         u64 instruction_ptff;
 432         u64 instruction_sck;
 433         u64 instruction_sckpf;
 434         u64 instruction_stidp;
 435         u64 instruction_spx;
 436         u64 instruction_stpx;
 437         u64 instruction_stap;
 438         u64 instruction_iske;
 439         u64 instruction_ri;
 440         u64 instruction_rrbe;
 441         u64 instruction_sske;
 442         u64 instruction_ipte_interlock;
 443         u64 instruction_stsi;
 444         u64 instruction_stfl;
 445         u64 instruction_tb;
 446         u64 instruction_tpi;
 447         u64 instruction_tprot;
 448         u64 instruction_tsch;
 449         u64 instruction_sie;
 450         u64 instruction_essa;
 451         u64 instruction_sthyi;
 452         u64 instruction_sigp_sense;
 453         u64 instruction_sigp_sense_running;
 454         u64 instruction_sigp_external_call;
 455         u64 instruction_sigp_emergency;
 456         u64 instruction_sigp_cond_emergency;
 457         u64 instruction_sigp_start;
 458         u64 instruction_sigp_stop;
 459         u64 instruction_sigp_stop_store_status;
 460         u64 instruction_sigp_store_status;
 461         u64 instruction_sigp_store_adtl_status;
 462         u64 instruction_sigp_arch;
 463         u64 instruction_sigp_prefix;
 464         u64 instruction_sigp_restart;
 465         u64 instruction_sigp_init_cpu_reset;
 466         u64 instruction_sigp_cpu_reset;
 467         u64 instruction_sigp_unknown;
 468         u64 instruction_diagnose_10;
 469         u64 instruction_diagnose_44;
 470         u64 instruction_diagnose_9c;
 471         u64 diag_9c_ignored;
 472         u64 diag_9c_forward;
 473         u64 instruction_diagnose_258;
 474         u64 instruction_diagnose_308;
 475         u64 instruction_diagnose_500;
 476         u64 instruction_diagnose_other;
 477         u64 pfault_sync;
 478 };
 479
 480 #define PGM_OPERATION                   0x01
 481 #define PGM_PRIVILEGED_OP               0x02
 482 #define PGM_EXECUTE                     0x03
 483 #define PGM_PROTECTION                  0x04
 484 #define PGM_ADDRESSING                  0x05
 485 #define PGM_SPECIFICATION               0x06
 486 #define PGM_DATA                        0x07
 487 #define PGM_FIXED_POINT_OVERFLOW        0x08
 488 #define PGM_FIXED_POINT_DIVIDE          0x09
 489 #define PGM_DECIMAL_OVERFLOW            0x0a
 490 #define PGM_DECIMAL_DIVIDE              0x0b
 491 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 492 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 493 #define PGM_HFP_SIGNIFICANCE            0x0e
 494 #define PGM_HFP_DIVIDE                  0x0f
 495 #define PGM_SEGMENT_TRANSLATION         0x10
 496 #define PGM_PAGE_TRANSLATION            0x11
 497 #define PGM_TRANSLATION_SPEC            0x12
 498 #define PGM_SPECIAL_OPERATION           0x13
 499 #define PGM_OPERAND                     0x15
 500 #define PGM_TRACE_TABEL                 0x16
 501 #define PGM_VECTOR_PROCESSING           0x1b
 502 #define PGM_SPACE_SWITCH                0x1c
 503 #define PGM_HFP_SQUARE_ROOT             0x1d
 504 #define PGM_PC_TRANSLATION_SPEC         0x1f
 505 #define PGM_AFX_TRANSLATION             0x20
 506 #define PGM_ASX_TRANSLATION             0x21
 507 #define PGM_LX_TRANSLATION              0x22
 508 #define PGM_EX_TRANSLATION              0x23
 509 #define PGM_PRIMARY_AUTHORITY           0x24
 510 #define PGM_SECONDARY_AUTHORITY         0x25
 511 #define PGM_LFX_TRANSLATION             0x26
 512 #define PGM_LSX_TRANSLATION             0x27
 513 #define PGM_ALET_SPECIFICATION          0x28
 514 #define PGM_ALEN_TRANSLATION            0x29
 515 #define PGM_ALE_SEQUENCE                0x2a
 516 #define PGM_ASTE_VALIDITY               0x2b
 517 #define PGM_ASTE_SEQUENCE               0x2c
 518 #define PGM_EXTENDED_AUTHORITY          0x2d
 519 #define PGM_LSTE_SEQUENCE               0x2e
 520 #define PGM_ASTE_INSTANCE               0x2f
 521 #define PGM_STACK_FULL                  0x30
 522 #define PGM_STACK_EMPTY                 0x31
 523 #define PGM_STACK_SPECIFICATION         0x32
 524 #define PGM_STACK_TYPE                  0x33
 525 #define PGM_STACK_OPERATION             0x34
 526 #define PGM_ASCE_TYPE                   0x38
 527 #define PGM_REGION_FIRST_TRANS          0x39
 528 #define PGM_REGION_SECOND_TRANS         0x3a
 529 #define PGM_REGION_THIRD_TRANS          0x3b
 530 #define PGM_MONITOR                     0x40
 531 #define PGM_PER                         0x80
 532 #define PGM_CRYPTO_OPERATION            0x119
 533
 534 /* irq types in ascend order of priorities */
 535 enum irq_types {
 536         IRQ_PEND_SET_PREFIX = 0,
 537         IRQ_PEND_RESTART,
 538         IRQ_PEND_SIGP_STOP,
 539         IRQ_PEND_IO_ISC_7,
 540         IRQ_PEND_IO_ISC_6,
 541         IRQ_PEND_IO_ISC_5,
 542         IRQ_PEND_IO_ISC_4,
 543         IRQ_PEND_IO_ISC_3,
 544         IRQ_PEND_IO_ISC_2,
 545         IRQ_PEND_IO_ISC_1,
 546         IRQ_PEND_IO_ISC_0,
 547         IRQ_PEND_VIRTIO,
 548         IRQ_PEND_PFAULT_DONE,
 549         IRQ_PEND_PFAULT_INIT,
 550         IRQ_PEND_EXT_HOST,
 551         IRQ_PEND_EXT_SERVICE,
 552         IRQ_PEND_EXT_SERVICE_EV,
 553         IRQ_PEND_EXT_TIMING,
 554         IRQ_PEND_EXT_CPU_TIMER,
 555         IRQ_PEND_EXT_CLOCK_COMP,
 556         IRQ_PEND_EXT_EXTERNAL,
 557         IRQ_PEND_EXT_EMERGENCY,
 558         IRQ_PEND_EXT_MALFUNC,
 559         IRQ_PEND_EXT_IRQ_KEY,
 560         IRQ_PEND_MCHK_REP,
 561         IRQ_PEND_PROG,
 562         IRQ_PEND_SVC,
 563         IRQ_PEND_MCHK_EX,
 564         IRQ_PEND_COUNT
 565 };
 566
 567 /* We have 2M for virtio device descriptor pages. Smallest amount of
 568  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 569  */
 570 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 571
 572 /*
 573  * Repressible (non-floating) machine check interrupts
 574  * subclass bits in MCIC
 575  */
 576 #define MCHK_EXTD_BIT 58
 577 #define MCHK_DEGR_BIT 56
 578 #define MCHK_WARN_BIT 55
 579 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 580                        (1UL << MCHK_EXTD_BIT) | \
 581                        (1UL << MCHK_WARN_BIT))
 582
 583 /* Exigent machine check interrupts subclass bits in MCIC */
 584 #define MCHK_SD_BIT 63
 585 #define MCHK_PD_BIT 62
 586 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 587
 588 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 589                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 590                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 591                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 592                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 593                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 594                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 595                            (1UL << IRQ_PEND_EXT_HOST)       | \
 596                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 597                            (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
 598                            (1UL << IRQ_PEND_VIRTIO)         | \
 599                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 600                            (1UL << IRQ_PEND_PFAULT_DONE))
 601
 602 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 603                           (1UL << IRQ_PEND_IO_ISC_1) | \
 604                           (1UL << IRQ_PEND_IO_ISC_2) | \
 605                           (1UL << IRQ_PEND_IO_ISC_3) | \
 606                           (1UL << IRQ_PEND_IO_ISC_4) | \
 607                           (1UL << IRQ_PEND_IO_ISC_5) | \
 608                           (1UL << IRQ_PEND_IO_ISC_6) | \
 609                           (1UL << IRQ_PEND_IO_ISC_7))
 610
 611 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 612                             (1UL << IRQ_PEND_MCHK_EX))
 613
 614 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 615                               (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 616                               (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 617                               (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 618                               (1UL << IRQ_PEND_EXT_SERVICE)    | \
 619                               (1UL << IRQ_PEND_EXT_SERVICE_EV))
 620
 621 struct kvm_s390_interrupt_info {
 622         struct list_head list;
 623         u64     type;
 624         union {
 625                 struct kvm_s390_io_info io;
 626                 struct kvm_s390_ext_info ext;
 627                 struct kvm_s390_pgm_info pgm;
 628                 struct kvm_s390_emerg_info emerg;
 629                 struct kvm_s390_extcall_info extcall;
 630                 struct kvm_s390_prefix_info prefix;
 631                 struct kvm_s390_stop_info stop;
 632                 struct kvm_s390_mchk_info mchk;
 633         };
 634 };
 635
 636 struct kvm_s390_irq_payload {
 637         struct kvm_s390_io_info io;
 638         struct kvm_s390_ext_info ext;
 639         struct kvm_s390_pgm_info pgm;
 640         struct kvm_s390_emerg_info emerg;
 641         struct kvm_s390_extcall_info extcall;
 642         struct kvm_s390_prefix_info prefix;
 643         struct kvm_s390_stop_info stop;
 644         struct kvm_s390_mchk_info mchk;
 645 };
 646
 647 struct kvm_s390_local_interrupt {
 648         spinlock_t lock;
 649         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 650         struct kvm_s390_irq_payload irq;
 651         unsigned long pending_irqs;
 652 };
 653
 654 #define FIRQ_LIST_IO_ISC_0 0
 655 #define FIRQ_LIST_IO_ISC_1 1
 656 #define FIRQ_LIST_IO_ISC_2 2
 657 #define FIRQ_LIST_IO_ISC_3 3
 658 #define FIRQ_LIST_IO_ISC_4 4
 659 #define FIRQ_LIST_IO_ISC_5 5
 660 #define FIRQ_LIST_IO_ISC_6 6
 661 #define FIRQ_LIST_IO_ISC_7 7
 662 #define FIRQ_LIST_PFAULT   8
 663 #define FIRQ_LIST_VIRTIO   9
 664 #define FIRQ_LIST_COUNT   10
 665 #define FIRQ_CNTR_IO       0
 666 #define FIRQ_CNTR_SERVICE  1
 667 #define FIRQ_CNTR_VIRTIO   2
 668 #define FIRQ_CNTR_PFAULT   3
 669 #define FIRQ_MAX_COUNT     4
 670
 671 /* mask the AIS mode for a given ISC */
 672 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 673
 674 #define KVM_S390_AIS_MODE_ALL    0
 675 #define KVM_S390_AIS_MODE_SINGLE 1
 676
 677 struct kvm_s390_float_interrupt {
 678         unsigned long pending_irqs;
 679         unsigned long masked_irqs;
 680         spinlock_t lock;
 681         struct list_head lists[FIRQ_LIST_COUNT];
 682         int counters[FIRQ_MAX_COUNT];
 683         struct kvm_s390_mchk_info mchk;
 684         struct kvm_s390_ext_info srv_signal;
 685         int next_rr_cpu;
 686         struct mutex ais_lock;
 687         u8 simm;
 688         u8 nimm;
 689 };
 690
 691 struct kvm_hw_wp_info_arch {
 692         unsigned long addr;
 693         unsigned long phys_addr;
 694         int len;
 695         char *old_data;
 696 };
 697
 698 struct kvm_hw_bp_info_arch {
 699         unsigned long addr;
 700         int len;
 701 };
 702
 703 /*
 704  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 705  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 706  * arch/s390/include/uapi/asm/kvm.h
 707  */
 708 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 709
 710 #define guestdbg_enabled(vcpu) \
 711                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 712 #define guestdbg_sstep_enabled(vcpu) \
 713                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 714 #define guestdbg_hw_bp_enabled(vcpu) \
 715                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 716 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 717                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 718
 719 #define KVM_GUESTDBG_VALID_MASK \
 720                 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
 721                 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
 722
 723 struct kvm_guestdbg_info_arch {
 724         unsigned long cr0;
 725         unsigned long cr9;
 726         unsigned long cr10;
 727         unsigned long cr11;
 728         struct kvm_hw_bp_info_arch *hw_bp_info;
 729         struct kvm_hw_wp_info_arch *hw_wp_info;
 730         int nr_hw_bp;
 731         int nr_hw_wp;
 732         unsigned long last_bp;
 733 };
 734
 735 struct kvm_s390_pv_vcpu {
 736         u64 handle;
 737         unsigned long stor_base;
 738 };
 739
 740 struct kvm_vcpu_arch {
 741         struct kvm_s390_sie_block *sie_block;
 742         /* if vsie is active, currently executed shadow sie control block */
 743         struct kvm_s390_sie_block *vsie_block;
 744         unsigned int      host_acrs[NUM_ACRS];
 745         struct gs_cb      *host_gscb;
 746         struct fpu        host_fpregs;
 747         struct kvm_s390_local_interrupt local_int;
 748         struct hrtimer    ckc_timer;
 749         struct kvm_s390_pgm_info pgm;
 750         struct gmap *gmap;
 751         /* backup location for the currently enabled gmap when scheduled out */
 752         struct gmap *enabled_gmap;
 753         struct kvm_guestdbg_info_arch guestdbg;
 754         unsigned long pfault_token;
 755         unsigned long pfault_select;
 756         unsigned long pfault_compare;
 757         bool cputm_enabled;
 758         /*
 759          * The seqcount protects updates to cputm_start and sie_block.cputm,
 760          * this way we can have non-blocking reads with consistent values.
 761          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 762          * values and to start/stop/enable/disable cpu timer accounting.
 763          */
 764         seqcount_t cputm_seqcount;
 765         __u64 cputm_start;
 766         bool gs_enabled;
 767         bool skey_enabled;
 768         struct kvm_s390_pv_vcpu pv;
 769         union diag318_info diag318_info;
 770 };
 771
 772 struct kvm_vm_stat {
 773         struct kvm_vm_stat_generic generic;
 774         u64 inject_io;
 775         u64 inject_float_mchk;
 776         u64 inject_pfault_done;
 777         u64 inject_service_signal;
 778         u64 inject_virtio;
 779         u64 aen_forward;
 780 };
 781
 782 struct kvm_arch_memory_slot {
 783 };
 784
 785 struct s390_map_info {
 786         struct list_head list;
 787         __u64 guest_addr;
 788         __u64 addr;
 789         struct page *page;
 790 };
 791
 792 struct s390_io_adapter {
 793         unsigned int id;
 794         int isc;
 795         bool maskable;
 796         bool masked;
 797         bool swap;
 798         bool suppressible;
 799 };
 800
 801 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 802 #define MAX_S390_ADAPTER_MAPS 256
 803
 804 /* maximum size of facilities and facility mask is 2k bytes */
 805 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 806 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 807         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 808 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 809 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 810         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 811
 812 struct kvm_s390_cpu_model {
 813         /* facility mask supported by kvm & hosting machine */
 814         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 815         struct kvm_s390_vm_cpu_subfunc subfuncs;
 816         /* facility list requested by guest (in dma page) */
 817         __u64 *fac_list;
 818         u64 cpuid;
 819         unsigned short ibc;
 820 };
 821
 822 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
 823
 824 struct kvm_s390_crypto {
 825         struct kvm_s390_crypto_cb *crycb;
 826         struct rw_semaphore pqap_hook_rwsem;
 827         crypto_hook *pqap_hook;
 828         __u32 crycbd;
 829         __u8 aes_kw;
 830         __u8 dea_kw;
 831         __u8 apie;
 832 };
 833
 834 #define APCB0_MASK_SIZE 1
 835 struct kvm_s390_apcb0 {
 836         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 837         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 838         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 839         __u64 reserved18;                       /* 0x0018 */
 840 };
 841
 842 #define APCB1_MASK_SIZE 4
 843 struct kvm_s390_apcb1 {
 844         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 845         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 846         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 847         __u64 reserved60[4];                    /* 0x0060 */
 848 };
 849
 850 struct kvm_s390_crypto_cb {
 851         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 852         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 853         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 854         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 855         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 856 };
 857
 858 struct kvm_s390_gisa {
 859         union {
 860                 struct { /* common to all formats */
 861                         u32 next_alert;
 862                         u8  ipm;
 863                         u8  reserved01[2];
 864                         u8  iam;
 865                 };
 866                 struct { /* format 0 */
 867                         u32 next_alert;
 868                         u8  ipm;
 869                         u8  reserved01;
 870                         u8  : 6;
 871                         u8  g : 1;
 872                         u8  c : 1;
 873                         u8  iam;
 874                         u8  reserved02[4];
 875                         u32 airq_count;
 876                 } g0;
 877                 struct { /* format 1 */
 878                         u32 next_alert;
 879                         u8  ipm;
 880                         u8  simm;
 881                         u8  nimm;
 882                         u8  iam;
 883                         u8  aism[8];
 884                         u8  : 6;
 885                         u8  g : 1;
 886                         u8  c : 1;
 887                         u8  reserved03[11];
 888                         u32 airq_count;
 889                 } g1;
 890                 struct {
 891                         u64 word[4];
 892                 } u64;
 893         };
 894 };
 895
 896 struct kvm_s390_gib {
 897         u32 alert_list_origin;
 898         u32 reserved01;
 899         u8:5;
 900         u8  nisc:3;
 901         u8  reserved03[3];
 902         u32 reserved04[5];
 903 };
 904
 905 /*
 906  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 907  * gisa need 31bit addresses in the sie control block.
 908  */
 909 struct sie_page2 {
 910         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 911         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 912         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 913         struct kvm *kvm;                                /* 0x0920 */
 914         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 915 };
 916
 917 struct kvm_s390_vsie {
 918         struct mutex mutex;
 919         struct radix_tree_root addr_to_page;
 920         int page_count;
 921         int next;
 922         struct page *pages[KVM_MAX_VCPUS];
 923 };
 924
 925 struct kvm_s390_gisa_iam {
 926         u8 mask;
 927         spinlock_t ref_lock;
 928         u32 ref_count[MAX_ISC + 1];
 929 };
 930
 931 struct kvm_s390_gisa_interrupt {
 932         struct kvm_s390_gisa *origin;
 933         struct kvm_s390_gisa_iam alert;
 934         struct hrtimer timer;
 935         u64 expires;
 936         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 937 };
 938
 939 struct kvm_s390_pv {
 940         u64 handle;
 941         u64 guest_len;
 942         unsigned long stor_base;
 943         void *stor_var;
 944         bool dumping;
 945         struct mmu_notifier mmu_notifier;
 946 };
 947
 948 struct kvm_arch{
 949         void *sca;
 950         int use_esca;
 951         rwlock_t sca_lock;
 952         debug_info_t *dbf;
 953         struct kvm_s390_float_interrupt float_int;
 954         struct kvm_device *flic;
 955         struct gmap *gmap;
 956         unsigned long mem_limit;
 957         int css_support;
 958         int use_irqchip;
 959         int use_cmma;
 960         int use_pfmfi;
 961         int use_skf;
 962         int use_zpci_interp;
 963         int user_cpu_state_ctrl;
 964         int user_sigp;
 965         int user_stsi;
 966         int user_instr0;
 967         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 968         wait_queue_head_t ipte_wq;
 969         int ipte_lock_count;
 970         struct mutex ipte_mutex;
 971         spinlock_t start_stop_lock;
 972         struct sie_page2 *sie_page2;
 973         struct kvm_s390_cpu_model model;
 974         struct kvm_s390_crypto crypto;
 975         struct kvm_s390_vsie vsie;
 976         u8 epdx;
 977         u64 epoch;
 978         int migration_mode;
 979         atomic64_t cmma_dirty_pages;
 980         /* subset of available cpu features enabled by user space */
 981         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 982         /* indexed by vcpu_idx */
 983         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 984         struct kvm_s390_gisa_interrupt gisa_int;
 985         struct kvm_s390_pv pv;
 986         struct list_head kzdev_list;
 987         spinlock_t kzdev_list_lock;
 988 };
 989
 990 #define KVM_HVA_ERR_BAD         (-1UL)
 991 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 992
 993 static inline bool kvm_is_error_hva(unsigned long addr)
 994 {
 995         return IS_ERR_VALUE(addr);
 996 }
 997
 998 #define ASYNC_PF_PER_VCPU       64
 999 struct kvm_arch_async_pf {
1000         unsigned long pfault_token;
1001 };
1002
1003 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1004
1005 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1006                                struct kvm_async_pf *work);
1007
1008 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1009                                      struct kvm_async_pf *work);
1010
1011 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1012                                  struct kvm_async_pf *work);
1013
1014 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1015
1016 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1017 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1018                                unsigned long *aqm, unsigned long *adm);
1019
1020 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
1021 extern char sie_exit;
1022
1023 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1024 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1025
1026 static inline void kvm_arch_hardware_disable(void) {}
1027 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
1028 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
1029 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1030                                          struct kvm_memory_slot *slot) {}
1031 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
1032 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
1033 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1034                 struct kvm_memory_slot *slot) {}
1035 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
1036 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1037
1038 #define __KVM_HAVE_ARCH_VM_FREE
1039 void kvm_arch_free_vm(struct kvm *kvm);
1040
1041 #ifdef CONFIG_VFIO_PCI_ZDEV_KVM
1042 int kvm_s390_pci_register_kvm(struct zpci_dev *zdev, struct kvm *kvm);
1043 void kvm_s390_pci_unregister_kvm(struct zpci_dev *zdev);
1044 #else
1045 static inline int kvm_s390_pci_register_kvm(struct zpci_dev *dev,
1046                                             struct kvm *kvm)
1047 {
1048         return -EPERM;
1049 }
1050 static inline void kvm_s390_pci_unregister_kvm(struct zpci_dev *dev) {}
1051 #endif
1052
1053 #endif