1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. 7 * Authors: Sanjay Lal <sanjayl@kymasys.com> 8 */ 9 10 #ifndef __MIPS_KVM_HOST_H__ 11 #define __MIPS_KVM_HOST_H__ 12 13 #include <linux/mutex.h> 14 #include <linux/hrtimer.h> 15 #include <linux/interrupt.h> 16 #include <linux/types.h> 17 #include <linux/kvm.h> 18 #include <linux/kvm_types.h> 19 #include <linux/threads.h> 20 #include <linux/spinlock.h> 21 22 23 #define KVM_MAX_VCPUS 1 24 #define KVM_USER_MEM_SLOTS 8 25 /* memory slots that does not exposed to userspace */ 26 #define KVM_PRIVATE_MEM_SLOTS 0 27 28 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 29 30 31 32 /* Special address that contains the comm page, used for reducing # of traps */ 33 #define KVM_GUEST_COMMPAGE_ADDR 0x0 34 35 #define KVM_GUEST_KERNEL_MODE(vcpu) ((kvm_read_c0_guest_status(vcpu->arch.cop0) & (ST0_EXL | ST0_ERL)) || \ 36 ((kvm_read_c0_guest_status(vcpu->arch.cop0) & KSU_USER) == 0)) 37 38 #define KVM_GUEST_KUSEG 0x00000000UL 39 #define KVM_GUEST_KSEG0 0x40000000UL 40 #define KVM_GUEST_KSEG23 0x60000000UL 41 #define KVM_GUEST_KSEGX(a) ((_ACAST32_(a)) & 0x60000000) 42 #define KVM_GUEST_CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) 43 44 #define KVM_GUEST_CKSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) 45 #define KVM_GUEST_CKSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) 46 #define KVM_GUEST_CKSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) 47 48 /* 49 * Map an address to a certain kernel segment 50 */ 51 #define KVM_GUEST_KSEG0ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG0) 52 #define KVM_GUEST_KSEG1ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG1) 53 #define KVM_GUEST_KSEG23ADDR(a) (KVM_GUEST_CPHYSADDR(a) | KVM_GUEST_KSEG23) 54 55 #define KVM_INVALID_PAGE 0xdeadbeef 56 #define KVM_INVALID_INST 0xdeadbeef 57 #define KVM_INVALID_ADDR 0xdeadbeef 58 59 #define KVM_MALTA_GUEST_RTC_ADDR 0xb8000070UL 60 61 #define GUEST_TICKS_PER_JIFFY (40000000/HZ) 62 #define MS_TO_NS(x) (x * 1E6L) 63 64 #define CAUSEB_DC 27 65 #define CAUSEF_DC (_ULCAST_(1) << 27) 66 67 struct kvm; 68 struct kvm_run; 69 struct kvm_vcpu; 70 struct kvm_interrupt; 71 72 extern atomic_t kvm_mips_instance; 73 extern pfn_t(*kvm_mips_gfn_to_pfn) (struct kvm *kvm, gfn_t gfn); 74 extern void (*kvm_mips_release_pfn_clean) (pfn_t pfn); 75 extern bool(*kvm_mips_is_error_pfn) (pfn_t pfn); 76 77 struct kvm_vm_stat { 78 u32 remote_tlb_flush; 79 }; 80 81 struct kvm_vcpu_stat { 82 u32 wait_exits; 83 u32 cache_exits; 84 u32 signal_exits; 85 u32 int_exits; 86 u32 cop_unusable_exits; 87 u32 tlbmod_exits; 88 u32 tlbmiss_ld_exits; 89 u32 tlbmiss_st_exits; 90 u32 addrerr_st_exits; 91 u32 addrerr_ld_exits; 92 u32 syscall_exits; 93 u32 resvd_inst_exits; 94 u32 break_inst_exits; 95 u32 flush_dcache_exits; 96 u32 halt_wakeup; 97 }; 98 99 enum kvm_mips_exit_types { 100 WAIT_EXITS, 101 CACHE_EXITS, 102 SIGNAL_EXITS, 103 INT_EXITS, 104 COP_UNUSABLE_EXITS, 105 TLBMOD_EXITS, 106 TLBMISS_LD_EXITS, 107 TLBMISS_ST_EXITS, 108 ADDRERR_ST_EXITS, 109 ADDRERR_LD_EXITS, 110 SYSCALL_EXITS, 111 RESVD_INST_EXITS, 112 BREAK_INST_EXITS, 113 FLUSH_DCACHE_EXITS, 114 MAX_KVM_MIPS_EXIT_TYPES 115 }; 116 117 struct kvm_arch_memory_slot { 118 }; 119 120 struct kvm_arch { 121 /* Guest GVA->HPA page table */ 122 unsigned long *guest_pmap; 123 unsigned long guest_pmap_npages; 124 125 /* Wired host TLB used for the commpage */ 126 int commpage_tlb; 127 }; 128 129 #define N_MIPS_COPROC_REGS 32 130 #define N_MIPS_COPROC_SEL 8 131 132 struct mips_coproc { 133 unsigned long reg[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; 134 #ifdef CONFIG_KVM_MIPS_DEBUG_COP0_COUNTERS 135 unsigned long stat[N_MIPS_COPROC_REGS][N_MIPS_COPROC_SEL]; 136 #endif 137 }; 138 139 /* 140 * Coprocessor 0 register names 141 */ 142 #define MIPS_CP0_TLB_INDEX 0 143 #define MIPS_CP0_TLB_RANDOM 1 144 #define MIPS_CP0_TLB_LOW 2 145 #define MIPS_CP0_TLB_LO0 2 146 #define MIPS_CP0_TLB_LO1 3 147 #define MIPS_CP0_TLB_CONTEXT 4 148 #define MIPS_CP0_TLB_PG_MASK 5 149 #define MIPS_CP0_TLB_WIRED 6 150 #define MIPS_CP0_HWRENA 7 151 #define MIPS_CP0_BAD_VADDR 8 152 #define MIPS_CP0_COUNT 9 153 #define MIPS_CP0_TLB_HI 10 154 #define MIPS_CP0_COMPARE 11 155 #define MIPS_CP0_STATUS 12 156 #define MIPS_CP0_CAUSE 13 157 #define MIPS_CP0_EXC_PC 14 158 #define MIPS_CP0_PRID 15 159 #define MIPS_CP0_CONFIG 16 160 #define MIPS_CP0_LLADDR 17 161 #define MIPS_CP0_WATCH_LO 18 162 #define MIPS_CP0_WATCH_HI 19 163 #define MIPS_CP0_TLB_XCONTEXT 20 164 #define MIPS_CP0_ECC 26 165 #define MIPS_CP0_CACHE_ERR 27 166 #define MIPS_CP0_TAG_LO 28 167 #define MIPS_CP0_TAG_HI 29 168 #define MIPS_CP0_ERROR_PC 30 169 #define MIPS_CP0_DEBUG 23 170 #define MIPS_CP0_DEPC 24 171 #define MIPS_CP0_PERFCNT 25 172 #define MIPS_CP0_ERRCTL 26 173 #define MIPS_CP0_DATA_LO 28 174 #define MIPS_CP0_DATA_HI 29 175 #define MIPS_CP0_DESAVE 31 176 177 #define MIPS_CP0_CONFIG_SEL 0 178 #define MIPS_CP0_CONFIG1_SEL 1 179 #define MIPS_CP0_CONFIG2_SEL 2 180 #define MIPS_CP0_CONFIG3_SEL 3 181 182 /* Config0 register bits */ 183 #define CP0C0_M 31 184 #define CP0C0_K23 28 185 #define CP0C0_KU 25 186 #define CP0C0_MDU 20 187 #define CP0C0_MM 17 188 #define CP0C0_BM 16 189 #define CP0C0_BE 15 190 #define CP0C0_AT 13 191 #define CP0C0_AR 10 192 #define CP0C0_MT 7 193 #define CP0C0_VI 3 194 #define CP0C0_K0 0 195 196 /* Config1 register bits */ 197 #define CP0C1_M 31 198 #define CP0C1_MMU 25 199 #define CP0C1_IS 22 200 #define CP0C1_IL 19 201 #define CP0C1_IA 16 202 #define CP0C1_DS 13 203 #define CP0C1_DL 10 204 #define CP0C1_DA 7 205 #define CP0C1_C2 6 206 #define CP0C1_MD 5 207 #define CP0C1_PC 4 208 #define CP0C1_WR 3 209 #define CP0C1_CA 2 210 #define CP0C1_EP 1 211 #define CP0C1_FP 0 212 213 /* Config2 Register bits */ 214 #define CP0C2_M 31 215 #define CP0C2_TU 28 216 #define CP0C2_TS 24 217 #define CP0C2_TL 20 218 #define CP0C2_TA 16 219 #define CP0C2_SU 12 220 #define CP0C2_SS 8 221 #define CP0C2_SL 4 222 #define CP0C2_SA 0 223 224 /* Config3 Register bits */ 225 #define CP0C3_M 31 226 #define CP0C3_ISA_ON_EXC 16 227 #define CP0C3_ULRI 13 228 #define CP0C3_DSPP 10 229 #define CP0C3_LPA 7 230 #define CP0C3_VEIC 6 231 #define CP0C3_VInt 5 232 #define CP0C3_SP 4 233 #define CP0C3_MT 2 234 #define CP0C3_SM 1 235 #define CP0C3_TL 0 236 237 /* Have config1, Cacheable, noncoherent, write-back, write allocate*/ 238 #define MIPS_CONFIG0 \ 239 ((1 << CP0C0_M) | (0x3 << CP0C0_K0)) 240 241 /* Have config2, no coprocessor2 attached, no MDMX support attached, 242 no performance counters, watch registers present, 243 no code compression, EJTAG present, no FPU, no watch registers */ 244 #define MIPS_CONFIG1 \ 245 ((1 << CP0C1_M) | \ 246 (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \ 247 (0 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \ 248 (0 << CP0C1_FP)) 249 250 /* Have config3, no tertiary/secondary caches implemented */ 251 #define MIPS_CONFIG2 \ 252 ((1 << CP0C2_M)) 253 254 /* No config4, no DSP ASE, no large physaddr (PABITS), 255 no external interrupt controller, no vectored interrupts, 256 no 1kb pages, no SmartMIPS ASE, no trace logic */ 257 #define MIPS_CONFIG3 \ 258 ((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \ 259 (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \ 260 (0 << CP0C3_SM) | (0 << CP0C3_TL)) 261 262 /* MMU types, the first four entries have the same layout as the 263 CP0C0_MT field. */ 264 enum mips_mmu_types { 265 MMU_TYPE_NONE, 266 MMU_TYPE_R4000, 267 MMU_TYPE_RESERVED, 268 MMU_TYPE_FMT, 269 MMU_TYPE_R3000, 270 MMU_TYPE_R6000, 271 MMU_TYPE_R8000 272 }; 273 274 /* 275 * Trap codes 276 */ 277 #define T_INT 0 /* Interrupt pending */ 278 #define T_TLB_MOD 1 /* TLB modified fault */ 279 #define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ 280 #define T_TLB_ST_MISS 3 /* TLB miss on a store */ 281 #define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ 282 #define T_ADDR_ERR_ST 5 /* Address error on a store */ 283 #define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ 284 #define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ 285 #define T_SYSCALL 8 /* System call */ 286 #define T_BREAK 9 /* Breakpoint */ 287 #define T_RES_INST 10 /* Reserved instruction exception */ 288 #define T_COP_UNUSABLE 11 /* Coprocessor unusable */ 289 #define T_OVFLOW 12 /* Arithmetic overflow */ 290 291 /* 292 * Trap definitions added for r4000 port. 293 */ 294 #define T_TRAP 13 /* Trap instruction */ 295 #define T_VCEI 14 /* Virtual coherency exception */ 296 #define T_FPE 15 /* Floating point exception */ 297 #define T_WATCH 23 /* Watch address reference */ 298 #define T_VCED 31 /* Virtual coherency data */ 299 300 /* Resume Flags */ 301 #define RESUME_FLAG_DR (1<<0) /* Reload guest nonvolatile state? */ 302 #define RESUME_FLAG_HOST (1<<1) /* Resume host? */ 303 304 #define RESUME_GUEST 0 305 #define RESUME_GUEST_DR RESUME_FLAG_DR 306 #define RESUME_HOST RESUME_FLAG_HOST 307 308 enum emulation_result { 309 EMULATE_DONE, /* no further processing */ 310 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 311 EMULATE_FAIL, /* can't emulate this instruction */ 312 EMULATE_WAIT, /* WAIT instruction */ 313 EMULATE_PRIV_FAIL, 314 }; 315 316 #define MIPS3_PG_G 0x00000001 /* Global; ignore ASID if in lo0 & lo1 */ 317 #define MIPS3_PG_V 0x00000002 /* Valid */ 318 #define MIPS3_PG_NV 0x00000000 319 #define MIPS3_PG_D 0x00000004 /* Dirty */ 320 321 #define mips3_paddr_to_tlbpfn(x) \ 322 (((unsigned long)(x) >> MIPS3_PG_SHIFT) & MIPS3_PG_FRAME) 323 #define mips3_tlbpfn_to_paddr(x) \ 324 ((unsigned long)((x) & MIPS3_PG_FRAME) << MIPS3_PG_SHIFT) 325 326 #define MIPS3_PG_SHIFT 6 327 #define MIPS3_PG_FRAME 0x3fffffc0 328 329 #define VPN2_MASK 0xffffe000 330 #define TLB_IS_GLOBAL(x) (((x).tlb_lo0 & MIPS3_PG_G) && \ 331 ((x).tlb_lo1 & MIPS3_PG_G)) 332 #define TLB_VPN2(x) ((x).tlb_hi & VPN2_MASK) 333 #define TLB_ASID(x) ((x).tlb_hi & ASID_MASK) 334 #define TLB_IS_VALID(x, va) (((va) & (1 << PAGE_SHIFT)) \ 335 ? ((x).tlb_lo1 & MIPS3_PG_V) \ 336 : ((x).tlb_lo0 & MIPS3_PG_V)) 337 338 struct kvm_mips_tlb { 339 long tlb_mask; 340 long tlb_hi; 341 long tlb_lo0; 342 long tlb_lo1; 343 }; 344 345 #define KVM_MIPS_GUEST_TLB_SIZE 64 346 struct kvm_vcpu_arch { 347 void *host_ebase, *guest_ebase; 348 unsigned long host_stack; 349 unsigned long host_gp; 350 351 /* Host CP0 registers used when handling exits from guest */ 352 unsigned long host_cp0_badvaddr; 353 unsigned long host_cp0_cause; 354 unsigned long host_cp0_epc; 355 unsigned long host_cp0_entryhi; 356 uint32_t guest_inst; 357 358 /* GPRS */ 359 unsigned long gprs[32]; 360 unsigned long hi; 361 unsigned long lo; 362 unsigned long pc; 363 364 /* FPU State */ 365 struct mips_fpu_struct fpu; 366 367 /* COP0 State */ 368 struct mips_coproc *cop0; 369 370 /* Host KSEG0 address of the EI/DI offset */ 371 void *kseg0_commpage; 372 373 u32 io_gpr; /* GPR used as IO source/target */ 374 375 /* Used to calibrate the virutal count register for the guest */ 376 int32_t host_cp0_count; 377 378 /* Bitmask of exceptions that are pending */ 379 unsigned long pending_exceptions; 380 381 /* Bitmask of pending exceptions to be cleared */ 382 unsigned long pending_exceptions_clr; 383 384 unsigned long pending_load_cause; 385 386 /* Save/Restore the entryhi register when are are preempted/scheduled back in */ 387 unsigned long preempt_entryhi; 388 389 /* S/W Based TLB for guest */ 390 struct kvm_mips_tlb guest_tlb[KVM_MIPS_GUEST_TLB_SIZE]; 391 392 /* Cached guest kernel/user ASIDs */ 393 uint32_t guest_user_asid[NR_CPUS]; 394 uint32_t guest_kernel_asid[NR_CPUS]; 395 struct mm_struct guest_kernel_mm, guest_user_mm; 396 397 struct hrtimer comparecount_timer; 398 399 int last_sched_cpu; 400 401 /* WAIT executed */ 402 int wait; 403 }; 404 405 406 #define kvm_read_c0_guest_index(cop0) (cop0->reg[MIPS_CP0_TLB_INDEX][0]) 407 #define kvm_write_c0_guest_index(cop0, val) (cop0->reg[MIPS_CP0_TLB_INDEX][0] = val) 408 #define kvm_read_c0_guest_entrylo0(cop0) (cop0->reg[MIPS_CP0_TLB_LO0][0]) 409 #define kvm_read_c0_guest_entrylo1(cop0) (cop0->reg[MIPS_CP0_TLB_LO1][0]) 410 #define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0]) 411 #define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val)) 412 #define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2]) 413 #define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0]) 414 #define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val)) 415 #define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0]) 416 #define kvm_write_c0_guest_wired(cop0, val) (cop0->reg[MIPS_CP0_TLB_WIRED][0] = (val)) 417 #define kvm_read_c0_guest_hwrena(cop0) (cop0->reg[MIPS_CP0_HWRENA][0]) 418 #define kvm_write_c0_guest_hwrena(cop0, val) (cop0->reg[MIPS_CP0_HWRENA][0] = (val)) 419 #define kvm_read_c0_guest_badvaddr(cop0) (cop0->reg[MIPS_CP0_BAD_VADDR][0]) 420 #define kvm_write_c0_guest_badvaddr(cop0, val) (cop0->reg[MIPS_CP0_BAD_VADDR][0] = (val)) 421 #define kvm_read_c0_guest_count(cop0) (cop0->reg[MIPS_CP0_COUNT][0]) 422 #define kvm_write_c0_guest_count(cop0, val) (cop0->reg[MIPS_CP0_COUNT][0] = (val)) 423 #define kvm_read_c0_guest_entryhi(cop0) (cop0->reg[MIPS_CP0_TLB_HI][0]) 424 #define kvm_write_c0_guest_entryhi(cop0, val) (cop0->reg[MIPS_CP0_TLB_HI][0] = (val)) 425 #define kvm_read_c0_guest_compare(cop0) (cop0->reg[MIPS_CP0_COMPARE][0]) 426 #define kvm_write_c0_guest_compare(cop0, val) (cop0->reg[MIPS_CP0_COMPARE][0] = (val)) 427 #define kvm_read_c0_guest_status(cop0) (cop0->reg[MIPS_CP0_STATUS][0]) 428 #define kvm_write_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] = (val)) 429 #define kvm_read_c0_guest_intctl(cop0) (cop0->reg[MIPS_CP0_STATUS][1]) 430 #define kvm_write_c0_guest_intctl(cop0, val) (cop0->reg[MIPS_CP0_STATUS][1] = (val)) 431 #define kvm_read_c0_guest_cause(cop0) (cop0->reg[MIPS_CP0_CAUSE][0]) 432 #define kvm_write_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] = (val)) 433 #define kvm_read_c0_guest_epc(cop0) (cop0->reg[MIPS_CP0_EXC_PC][0]) 434 #define kvm_write_c0_guest_epc(cop0, val) (cop0->reg[MIPS_CP0_EXC_PC][0] = (val)) 435 #define kvm_read_c0_guest_prid(cop0) (cop0->reg[MIPS_CP0_PRID][0]) 436 #define kvm_write_c0_guest_prid(cop0, val) (cop0->reg[MIPS_CP0_PRID][0] = (val)) 437 #define kvm_read_c0_guest_ebase(cop0) (cop0->reg[MIPS_CP0_PRID][1]) 438 #define kvm_write_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] = (val)) 439 #define kvm_read_c0_guest_config(cop0) (cop0->reg[MIPS_CP0_CONFIG][0]) 440 #define kvm_read_c0_guest_config1(cop0) (cop0->reg[MIPS_CP0_CONFIG][1]) 441 #define kvm_read_c0_guest_config2(cop0) (cop0->reg[MIPS_CP0_CONFIG][2]) 442 #define kvm_read_c0_guest_config3(cop0) (cop0->reg[MIPS_CP0_CONFIG][3]) 443 #define kvm_read_c0_guest_config7(cop0) (cop0->reg[MIPS_CP0_CONFIG][7]) 444 #define kvm_write_c0_guest_config(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][0] = (val)) 445 #define kvm_write_c0_guest_config1(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][1] = (val)) 446 #define kvm_write_c0_guest_config2(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][2] = (val)) 447 #define kvm_write_c0_guest_config3(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][3] = (val)) 448 #define kvm_write_c0_guest_config7(cop0, val) (cop0->reg[MIPS_CP0_CONFIG][7] = (val)) 449 #define kvm_read_c0_guest_errorepc(cop0) (cop0->reg[MIPS_CP0_ERROR_PC][0]) 450 #define kvm_write_c0_guest_errorepc(cop0, val) (cop0->reg[MIPS_CP0_ERROR_PC][0] = (val)) 451 452 #define kvm_set_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] |= (val)) 453 #define kvm_clear_c0_guest_status(cop0, val) (cop0->reg[MIPS_CP0_STATUS][0] &= ~(val)) 454 #define kvm_set_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] |= (val)) 455 #define kvm_clear_c0_guest_cause(cop0, val) (cop0->reg[MIPS_CP0_CAUSE][0] &= ~(val)) 456 #define kvm_change_c0_guest_cause(cop0, change, val) \ 457 { \ 458 kvm_clear_c0_guest_cause(cop0, change); \ 459 kvm_set_c0_guest_cause(cop0, ((val) & (change))); \ 460 } 461 #define kvm_set_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] |= (val)) 462 #define kvm_clear_c0_guest_ebase(cop0, val) (cop0->reg[MIPS_CP0_PRID][1] &= ~(val)) 463 #define kvm_change_c0_guest_ebase(cop0, change, val) \ 464 { \ 465 kvm_clear_c0_guest_ebase(cop0, change); \ 466 kvm_set_c0_guest_ebase(cop0, ((val) & (change))); \ 467 } 468 469 470 struct kvm_mips_callbacks { 471 int (*handle_cop_unusable) (struct kvm_vcpu *vcpu); 472 int (*handle_tlb_mod) (struct kvm_vcpu *vcpu); 473 int (*handle_tlb_ld_miss) (struct kvm_vcpu *vcpu); 474 int (*handle_tlb_st_miss) (struct kvm_vcpu *vcpu); 475 int (*handle_addr_err_st) (struct kvm_vcpu *vcpu); 476 int (*handle_addr_err_ld) (struct kvm_vcpu *vcpu); 477 int (*handle_syscall) (struct kvm_vcpu *vcpu); 478 int (*handle_res_inst) (struct kvm_vcpu *vcpu); 479 int (*handle_break) (struct kvm_vcpu *vcpu); 480 int (*vm_init) (struct kvm *kvm); 481 int (*vcpu_init) (struct kvm_vcpu *vcpu); 482 int (*vcpu_setup) (struct kvm_vcpu *vcpu); 483 gpa_t(*gva_to_gpa) (gva_t gva); 484 void (*queue_timer_int) (struct kvm_vcpu *vcpu); 485 void (*dequeue_timer_int) (struct kvm_vcpu *vcpu); 486 void (*queue_io_int) (struct kvm_vcpu *vcpu, 487 struct kvm_mips_interrupt *irq); 488 void (*dequeue_io_int) (struct kvm_vcpu *vcpu, 489 struct kvm_mips_interrupt *irq); 490 int (*irq_deliver) (struct kvm_vcpu *vcpu, unsigned int priority, 491 uint32_t cause); 492 int (*irq_clear) (struct kvm_vcpu *vcpu, unsigned int priority, 493 uint32_t cause); 494 }; 495 extern struct kvm_mips_callbacks *kvm_mips_callbacks; 496 int kvm_mips_emulation_init(struct kvm_mips_callbacks **install_callbacks); 497 498 /* Debug: dump vcpu state */ 499 int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu); 500 501 /* Trampoline ASM routine to start running in "Guest" context */ 502 extern int __kvm_mips_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu); 503 504 /* TLB handling */ 505 uint32_t kvm_get_kernel_asid(struct kvm_vcpu *vcpu); 506 507 uint32_t kvm_get_user_asid(struct kvm_vcpu *vcpu); 508 509 uint32_t kvm_get_commpage_asid (struct kvm_vcpu *vcpu); 510 511 extern int kvm_mips_handle_kseg0_tlb_fault(unsigned long badbaddr, 512 struct kvm_vcpu *vcpu); 513 514 extern int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, 515 struct kvm_vcpu *vcpu); 516 517 extern int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu, 518 struct kvm_mips_tlb *tlb, 519 unsigned long *hpa0, 520 unsigned long *hpa1); 521 522 extern enum emulation_result kvm_mips_handle_tlbmiss(unsigned long cause, 523 uint32_t *opc, 524 struct kvm_run *run, 525 struct kvm_vcpu *vcpu); 526 527 extern enum emulation_result kvm_mips_handle_tlbmod(unsigned long cause, 528 uint32_t *opc, 529 struct kvm_run *run, 530 struct kvm_vcpu *vcpu); 531 532 extern void kvm_mips_dump_host_tlbs(void); 533 extern void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu); 534 extern void kvm_mips_flush_host_tlb(int skip_kseg0); 535 extern int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long entryhi); 536 extern int kvm_mips_host_tlb_inv_index(struct kvm_vcpu *vcpu, int index); 537 538 extern int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, 539 unsigned long entryhi); 540 extern int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr); 541 extern unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu, 542 unsigned long gva); 543 extern void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu, 544 struct kvm_vcpu *vcpu); 545 extern void kvm_local_flush_tlb_all(void); 546 extern void kvm_mips_alloc_new_mmu_context(struct kvm_vcpu *vcpu); 547 extern void kvm_mips_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 548 extern void kvm_mips_vcpu_put(struct kvm_vcpu *vcpu); 549 550 /* Emulation */ 551 uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu); 552 enum emulation_result update_pc(struct kvm_vcpu *vcpu, uint32_t cause); 553 554 extern enum emulation_result kvm_mips_emulate_inst(unsigned long cause, 555 uint32_t *opc, 556 struct kvm_run *run, 557 struct kvm_vcpu *vcpu); 558 559 extern enum emulation_result kvm_mips_emulate_syscall(unsigned long cause, 560 uint32_t *opc, 561 struct kvm_run *run, 562 struct kvm_vcpu *vcpu); 563 564 extern enum emulation_result kvm_mips_emulate_tlbmiss_ld(unsigned long cause, 565 uint32_t *opc, 566 struct kvm_run *run, 567 struct kvm_vcpu *vcpu); 568 569 extern enum emulation_result kvm_mips_emulate_tlbinv_ld(unsigned long cause, 570 uint32_t *opc, 571 struct kvm_run *run, 572 struct kvm_vcpu *vcpu); 573 574 extern enum emulation_result kvm_mips_emulate_tlbmiss_st(unsigned long cause, 575 uint32_t *opc, 576 struct kvm_run *run, 577 struct kvm_vcpu *vcpu); 578 579 extern enum emulation_result kvm_mips_emulate_tlbinv_st(unsigned long cause, 580 uint32_t *opc, 581 struct kvm_run *run, 582 struct kvm_vcpu *vcpu); 583 584 extern enum emulation_result kvm_mips_emulate_tlbmod(unsigned long cause, 585 uint32_t *opc, 586 struct kvm_run *run, 587 struct kvm_vcpu *vcpu); 588 589 extern enum emulation_result kvm_mips_emulate_fpu_exc(unsigned long cause, 590 uint32_t *opc, 591 struct kvm_run *run, 592 struct kvm_vcpu *vcpu); 593 594 extern enum emulation_result kvm_mips_handle_ri(unsigned long cause, 595 uint32_t *opc, 596 struct kvm_run *run, 597 struct kvm_vcpu *vcpu); 598 599 extern enum emulation_result kvm_mips_emulate_ri_exc(unsigned long cause, 600 uint32_t *opc, 601 struct kvm_run *run, 602 struct kvm_vcpu *vcpu); 603 604 extern enum emulation_result kvm_mips_emulate_bp_exc(unsigned long cause, 605 uint32_t *opc, 606 struct kvm_run *run, 607 struct kvm_vcpu *vcpu); 608 609 extern enum emulation_result kvm_mips_complete_mmio_load(struct kvm_vcpu *vcpu, 610 struct kvm_run *run); 611 612 enum emulation_result kvm_mips_emulate_count(struct kvm_vcpu *vcpu); 613 614 enum emulation_result kvm_mips_check_privilege(unsigned long cause, 615 uint32_t *opc, 616 struct kvm_run *run, 617 struct kvm_vcpu *vcpu); 618 619 enum emulation_result kvm_mips_emulate_cache(uint32_t inst, 620 uint32_t *opc, 621 uint32_t cause, 622 struct kvm_run *run, 623 struct kvm_vcpu *vcpu); 624 enum emulation_result kvm_mips_emulate_CP0(uint32_t inst, 625 uint32_t *opc, 626 uint32_t cause, 627 struct kvm_run *run, 628 struct kvm_vcpu *vcpu); 629 enum emulation_result kvm_mips_emulate_store(uint32_t inst, 630 uint32_t cause, 631 struct kvm_run *run, 632 struct kvm_vcpu *vcpu); 633 enum emulation_result kvm_mips_emulate_load(uint32_t inst, 634 uint32_t cause, 635 struct kvm_run *run, 636 struct kvm_vcpu *vcpu); 637 638 /* Dynamic binary translation */ 639 extern int kvm_mips_trans_cache_index(uint32_t inst, uint32_t *opc, 640 struct kvm_vcpu *vcpu); 641 extern int kvm_mips_trans_cache_va(uint32_t inst, uint32_t *opc, 642 struct kvm_vcpu *vcpu); 643 extern int kvm_mips_trans_mfc0(uint32_t inst, uint32_t *opc, 644 struct kvm_vcpu *vcpu); 645 extern int kvm_mips_trans_mtc0(uint32_t inst, uint32_t *opc, 646 struct kvm_vcpu *vcpu); 647 648 /* Misc */ 649 extern void mips32_SyncICache(unsigned long addr, unsigned long size); 650 extern int kvm_mips_dump_stats(struct kvm_vcpu *vcpu); 651 extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm); 652 653 654 #endif /* __MIPS_KVM_HOST_H__ */ 655