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 454