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 #include <linux/hrtimer.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/kvm_host.h>
  19 #include <linux/kvm.h>
  20 #include <asm/debug.h>
  21 #include <asm/cpu.h>
  22 #include <asm/isc.h>
  23
  24 #define KVM_MAX_VCPUS 64
  25 #define KVM_USER_MEM_SLOTS 32
  26
  27 /*
  28  * These seem to be used for allocating ->chip in the routing table,
  29  * which we don't use. 4096 is an out-of-thin-air value. If we need
  30  * to look at ->chip later on, we'll need to revisit this.
  31  */
  32 #define KVM_NR_IRQCHIPS 1
  33 #define KVM_IRQCHIP_NUM_PINS 4096
  34
  35 #define SIGP_CTRL_C     0x00800000
  36
  37 struct sca_entry {
  38         atomic_t ctrl;
  39         __u32   reserved;
  40         __u64   sda;
  41         __u64   reserved2[2];
  42 } __attribute__((packed));
  43
  44 union ipte_control {
  45         unsigned long val;
  46         struct {
  47                 unsigned long k  : 1;
  48                 unsigned long kh : 31;
  49                 unsigned long kg : 32;
  50         };
  51 };
  52
  53 struct sca_block {
  54         union ipte_control ipte_control;
  55         __u64   reserved[5];
  56         __u64   mcn;
  57         __u64   reserved2;
  58         struct sca_entry cpu[64];
  59 } __attribute__((packed));
  60
  61 #define CPUSTAT_STOPPED    0x80000000
  62 #define CPUSTAT_WAIT       0x10000000
  63 #define CPUSTAT_ECALL_PEND 0x08000000
  64 #define CPUSTAT_STOP_INT   0x04000000
  65 #define CPUSTAT_IO_INT     0x02000000
  66 #define CPUSTAT_EXT_INT    0x01000000
  67 #define CPUSTAT_RUNNING    0x00800000
  68 #define CPUSTAT_RETAINED   0x00400000
  69 #define CPUSTAT_TIMING_SUB 0x00020000
  70 #define CPUSTAT_SIE_SUB    0x00010000
  71 #define CPUSTAT_RRF        0x00008000
  72 #define CPUSTAT_SLSV       0x00004000
  73 #define CPUSTAT_SLSR       0x00002000
  74 #define CPUSTAT_ZARCH      0x00000800
  75 #define CPUSTAT_MCDS       0x00000100
  76 #define CPUSTAT_SM         0x00000080
  77 #define CPUSTAT_IBS        0x00000040
  78 #define CPUSTAT_G          0x00000008
  79 #define CPUSTAT_GED        0x00000004
  80 #define CPUSTAT_J          0x00000002
  81 #define CPUSTAT_P          0x00000001
  82
  83 struct kvm_s390_sie_block {
  84         atomic_t cpuflags;              /* 0x0000 */
  85         __u32 : 1;                      /* 0x0004 */
  86         __u32 prefix : 18;
  87         __u32 : 13;
  88         __u8    reserved08[4];          /* 0x0008 */
  89 #define PROG_IN_SIE (1<<0)
  90         __u32   prog0c;                 /* 0x000c */
  91         __u8    reserved10[16];         /* 0x0010 */
  92 #define PROG_BLOCK_SIE 0x00000001
  93         atomic_t prog20;                /* 0x0020 */
  94         __u8    reserved24[4];          /* 0x0024 */
  95         __u64   cputm;                  /* 0x0028 */
  96         __u64   ckc;                    /* 0x0030 */
  97         __u64   epoch;                  /* 0x0038 */
  98         __u8    reserved40[4];          /* 0x0040 */
  99 #define LCTL_CR0        0x8000
 100 #define LCTL_CR6        0x0200
 101 #define LCTL_CR9        0x0040
 102 #define LCTL_CR10       0x0020
 103 #define LCTL_CR11       0x0010
 104 #define LCTL_CR14       0x0002
 105         __u16   lctl;                   /* 0x0044 */
 106         __s16   icpua;                  /* 0x0046 */
 107 #define ICTL_PINT       0x20000000
 108 #define ICTL_LPSW       0x00400000
 109 #define ICTL_STCTL      0x00040000
 110 #define ICTL_ISKE       0x00004000
 111 #define ICTL_SSKE       0x00002000
 112 #define ICTL_RRBE       0x00001000
 113 #define ICTL_TPROT      0x00000200
 114         __u32   ictl;                   /* 0x0048 */
 115         __u32   eca;                    /* 0x004c */
 116 #define ICPT_INST       0x04
 117 #define ICPT_PROGI      0x08
 118 #define ICPT_INSTPROGI  0x0C
 119 #define ICPT_OPEREXC    0x2C
 120 #define ICPT_PARTEXEC   0x38
 121 #define ICPT_IOINST     0x40
 122         __u8    icptcode;               /* 0x0050 */
 123         __u8    reserved51;             /* 0x0051 */
 124         __u16   ihcpu;                  /* 0x0052 */
 125         __u8    reserved54[2];          /* 0x0054 */
 126         __u16   ipa;                    /* 0x0056 */
 127         __u32   ipb;                    /* 0x0058 */
 128         __u32   scaoh;                  /* 0x005c */
 129         __u8    reserved60;             /* 0x0060 */
 130         __u8    ecb;                    /* 0x0061 */
 131         __u8    ecb2;                   /* 0x0062 */
 132         __u8    reserved63[1];          /* 0x0063 */
 133         __u32   scaol;                  /* 0x0064 */
 134         __u8    reserved68[4];          /* 0x0068 */
 135         __u32   todpr;                  /* 0x006c */
 136         __u8    reserved70[32];         /* 0x0070 */
 137         psw_t   gpsw;                   /* 0x0090 */
 138         __u64   gg14;                   /* 0x00a0 */
 139         __u64   gg15;                   /* 0x00a8 */
 140         __u8    reservedb0[20];         /* 0x00b0 */
 141         __u16   extcpuaddr;             /* 0x00c4 */
 142         __u16   eic;                    /* 0x00c6 */
 143         __u32   reservedc8;             /* 0x00c8 */
 144         __u16   pgmilc;                 /* 0x00cc */
 145         __u16   iprcc;                  /* 0x00ce */
 146         __u32   dxc;                    /* 0x00d0 */
 147         __u16   mcn;                    /* 0x00d4 */
 148         __u8    perc;                   /* 0x00d6 */
 149         __u8    peratmid;               /* 0x00d7 */
 150         __u64   peraddr;                /* 0x00d8 */
 151         __u8    eai;                    /* 0x00e0 */
 152         __u8    peraid;                 /* 0x00e1 */
 153         __u8    oai;                    /* 0x00e2 */
 154         __u8    armid;                  /* 0x00e3 */
 155         __u8    reservede4[4];          /* 0x00e4 */
 156         __u64   tecmc;                  /* 0x00e8 */
 157         __u8    reservedf0[16];         /* 0x00f0 */
 158         __u64   gcr[16];                /* 0x0100 */
 159         __u64   gbea;                   /* 0x0180 */
 160         __u8    reserved188[24];        /* 0x0188 */
 161         __u32   fac;                    /* 0x01a0 */
 162         __u8    reserved1a4[20];        /* 0x01a4 */
 163         __u64   cbrlo;                  /* 0x01b8 */
 164         __u8    reserved1c0[30];        /* 0x01c0 */
 165         __u64   pp;                     /* 0x01de */
 166         __u8    reserved1e6[2];         /* 0x01e6 */
 167         __u64   itdba;                  /* 0x01e8 */
 168         __u8    reserved1f0[16];        /* 0x01f0 */
 169 } __attribute__((packed));
 170
 171 struct kvm_s390_itdb {
 172         __u8    data[256];
 173 } __packed;
 174
 175 struct sie_page {
 176         struct kvm_s390_sie_block sie_block;
 177         __u8 reserved200[1024];         /* 0x0200 */
 178         struct kvm_s390_itdb itdb;      /* 0x0600 */
 179         __u8 reserved700[2304];         /* 0x0700 */
 180 } __packed;
 181
 182 struct kvm_vcpu_stat {
 183         u32 exit_userspace;
 184         u32 exit_null;
 185         u32 exit_external_request;
 186         u32 exit_external_interrupt;
 187         u32 exit_stop_request;
 188         u32 exit_validity;
 189         u32 exit_instruction;
 190         u32 instruction_lctl;
 191         u32 instruction_lctlg;
 192         u32 instruction_stctl;
 193         u32 instruction_stctg;
 194         u32 exit_program_interruption;
 195         u32 exit_instr_and_program;
 196         u32 deliver_external_call;
 197         u32 deliver_emergency_signal;
 198         u32 deliver_service_signal;
 199         u32 deliver_virtio_interrupt;
 200         u32 deliver_stop_signal;
 201         u32 deliver_prefix_signal;
 202         u32 deliver_restart_signal;
 203         u32 deliver_program_int;
 204         u32 deliver_io_int;
 205         u32 exit_wait_state;
 206         u32 instruction_pfmf;
 207         u32 instruction_stidp;
 208         u32 instruction_spx;
 209         u32 instruction_stpx;
 210         u32 instruction_stap;
 211         u32 instruction_storage_key;
 212         u32 instruction_ipte_interlock;
 213         u32 instruction_stsch;
 214         u32 instruction_chsc;
 215         u32 instruction_stsi;
 216         u32 instruction_stfl;
 217         u32 instruction_tprot;
 218         u32 instruction_essa;
 219         u32 instruction_sigp_sense;
 220         u32 instruction_sigp_sense_running;
 221         u32 instruction_sigp_external_call;
 222         u32 instruction_sigp_emergency;
 223         u32 instruction_sigp_stop;
 224         u32 instruction_sigp_arch;
 225         u32 instruction_sigp_prefix;
 226         u32 instruction_sigp_restart;
 227         u32 diagnose_10;
 228         u32 diagnose_44;
 229         u32 diagnose_9c;
 230 };
 231
 232 #define PGM_OPERATION                   0x01
 233 #define PGM_PRIVILEGED_OP               0x02
 234 #define PGM_EXECUTE                     0x03
 235 #define PGM_PROTECTION                  0x04
 236 #define PGM_ADDRESSING                  0x05
 237 #define PGM_SPECIFICATION               0x06
 238 #define PGM_DATA                        0x07
 239 #define PGM_FIXED_POINT_OVERFLOW        0x08
 240 #define PGM_FIXED_POINT_DIVIDE          0x09
 241 #define PGM_DECIMAL_OVERFLOW            0x0a
 242 #define PGM_DECIMAL_DIVIDE              0x0b
 243 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 244 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 245 #define PGM_HFP_SIGNIFICANCE            0x0e
 246 #define PGM_HFP_DIVIDE                  0x0f
 247 #define PGM_SEGMENT_TRANSLATION         0x10
 248 #define PGM_PAGE_TRANSLATION            0x11
 249 #define PGM_TRANSLATION_SPEC            0x12
 250 #define PGM_SPECIAL_OPERATION           0x13
 251 #define PGM_OPERAND                     0x15
 252 #define PGM_TRACE_TABEL                 0x16
 253 #define PGM_SPACE_SWITCH                0x1c
 254 #define PGM_HFP_SQUARE_ROOT             0x1d
 255 #define PGM_PC_TRANSLATION_SPEC         0x1f
 256 #define PGM_AFX_TRANSLATION             0x20
 257 #define PGM_ASX_TRANSLATION             0x21
 258 #define PGM_LX_TRANSLATION              0x22
 259 #define PGM_EX_TRANSLATION              0x23
 260 #define PGM_PRIMARY_AUTHORITY           0x24
 261 #define PGM_SECONDARY_AUTHORITY         0x25
 262 #define PGM_LFX_TRANSLATION             0x26
 263 #define PGM_LSX_TRANSLATION             0x27
 264 #define PGM_ALET_SPECIFICATION          0x28
 265 #define PGM_ALEN_TRANSLATION            0x29
 266 #define PGM_ALE_SEQUENCE                0x2a
 267 #define PGM_ASTE_VALIDITY               0x2b
 268 #define PGM_ASTE_SEQUENCE               0x2c
 269 #define PGM_EXTENDED_AUTHORITY          0x2d
 270 #define PGM_LSTE_SEQUENCE               0x2e
 271 #define PGM_ASTE_INSTANCE               0x2f
 272 #define PGM_STACK_FULL                  0x30
 273 #define PGM_STACK_EMPTY                 0x31
 274 #define PGM_STACK_SPECIFICATION         0x32
 275 #define PGM_STACK_TYPE                  0x33
 276 #define PGM_STACK_OPERATION             0x34
 277 #define PGM_ASCE_TYPE                   0x38
 278 #define PGM_REGION_FIRST_TRANS          0x39
 279 #define PGM_REGION_SECOND_TRANS         0x3a
 280 #define PGM_REGION_THIRD_TRANS          0x3b
 281 #define PGM_MONITOR                     0x40
 282 #define PGM_PER                         0x80
 283 #define PGM_CRYPTO_OPERATION            0x119
 284
 285 struct kvm_s390_interrupt_info {
 286         struct list_head list;
 287         u64     type;
 288         union {
 289                 struct kvm_s390_io_info io;
 290                 struct kvm_s390_ext_info ext;
 291                 struct kvm_s390_pgm_info pgm;
 292                 struct kvm_s390_emerg_info emerg;
 293                 struct kvm_s390_extcall_info extcall;
 294                 struct kvm_s390_prefix_info prefix;
 295                 struct kvm_s390_mchk_info mchk;
 296         };
 297 };
 298
 299 /* for local_interrupt.action_flags */
 300 #define ACTION_STORE_ON_STOP            (1<<0)
 301 #define ACTION_STOP_ON_STOP             (1<<1)
 302
 303 struct kvm_s390_local_interrupt {
 304         spinlock_t lock;
 305         struct list_head list;
 306         atomic_t active;
 307         struct kvm_s390_float_interrupt *float_int;
 308         wait_queue_head_t *wq;
 309         atomic_t *cpuflags;
 310         unsigned int action_bits;
 311 };
 312
 313 struct kvm_s390_float_interrupt {
 314         spinlock_t lock;
 315         struct list_head list;
 316         atomic_t active;
 317         int next_rr_cpu;
 318         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 319         unsigned int irq_count;
 320 };
 321
 322 struct kvm_hw_wp_info_arch {
 323         unsigned long addr;
 324         unsigned long phys_addr;
 325         int len;
 326         char *old_data;
 327 };
 328
 329 struct kvm_hw_bp_info_arch {
 330         unsigned long addr;
 331         int len;
 332 };
 333
 334 /*
 335  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 336  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 337  * arch/s390/include/uapi/asm/kvm.h
 338  */
 339 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 340
 341 #define guestdbg_enabled(vcpu) \
 342                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 343 #define guestdbg_sstep_enabled(vcpu) \
 344                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 345 #define guestdbg_hw_bp_enabled(vcpu) \
 346                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 347 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 348                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 349
 350 struct kvm_guestdbg_info_arch {
 351         unsigned long cr0;
 352         unsigned long cr9;
 353         unsigned long cr10;
 354         unsigned long cr11;
 355         struct kvm_hw_bp_info_arch *hw_bp_info;
 356         struct kvm_hw_wp_info_arch *hw_wp_info;
 357         int nr_hw_bp;
 358         int nr_hw_wp;
 359         unsigned long last_bp;
 360 };
 361
 362 struct kvm_vcpu_arch {
 363         struct kvm_s390_sie_block *sie_block;
 364         s390_fp_regs      host_fpregs;
 365         unsigned int      host_acrs[NUM_ACRS];
 366         s390_fp_regs      guest_fpregs;
 367         struct kvm_s390_local_interrupt local_int;
 368         struct hrtimer    ckc_timer;
 369         struct kvm_s390_pgm_info pgm;
 370         union  {
 371                 struct cpuid    cpu_id;
 372                 u64             stidp_data;
 373         };
 374         struct gmap *gmap;
 375         struct kvm_guestdbg_info_arch guestdbg;
 376 #define KVM_S390_PFAULT_TOKEN_INVALID   (-1UL)
 377         unsigned long pfault_token;
 378         unsigned long pfault_select;
 379         unsigned long pfault_compare;
 380 };
 381
 382 struct kvm_vm_stat {
 383         u32 remote_tlb_flush;
 384 };
 385
 386 struct kvm_arch_memory_slot {
 387 };
 388
 389 struct s390_map_info {
 390         struct list_head list;
 391         __u64 guest_addr;
 392         __u64 addr;
 393         struct page *page;
 394 };
 395
 396 struct s390_io_adapter {
 397         unsigned int id;
 398         int isc;
 399         bool maskable;
 400         bool masked;
 401         bool swap;
 402         struct rw_semaphore maps_lock;
 403         struct list_head maps;
 404         atomic_t nr_maps;
 405 };
 406
 407 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 408 #define MAX_S390_ADAPTER_MAPS 256
 409
 410 struct kvm_arch{
 411         struct sca_block *sca;
 412         debug_info_t *dbf;
 413         struct kvm_s390_float_interrupt float_int;
 414         struct kvm_device *flic;
 415         struct gmap *gmap;
 416         int css_support;
 417         int use_irqchip;
 418         int use_cmma;
 419         int user_cpu_state_ctrl;
 420         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 421         wait_queue_head_t ipte_wq;
 422         spinlock_t start_stop_lock;
 423 };
 424
 425 #define KVM_HVA_ERR_BAD         (-1UL)
 426 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 427
 428 static inline bool kvm_is_error_hva(unsigned long addr)
 429 {
 430         return IS_ERR_VALUE(addr);
 431 }
 432
 433 #define ASYNC_PF_PER_VCPU       64
 434 struct kvm_vcpu;
 435 struct kvm_async_pf;
 436 struct kvm_arch_async_pf {
 437         unsigned long pfault_token;
 438 };
 439
 440 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 441
 442 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 443                                struct kvm_async_pf *work);
 444
 445 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 446                                      struct kvm_async_pf *work);
 447
 448 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 449                                  struct kvm_async_pf *work);
 450
 451 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 452 extern char sie_exit;
 453 #endif