target-mips/kvm.c

   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  * KVM/MIPS: MIPS specific KVM APIs
   7  *
   8  * Copyright (C) 2012-2014 Imagination Technologies Ltd.
   9  * Authors: Sanjay Lal <sanjayl@kymasys.com>
  10 */
  11
  12 #include "qemu/osdep.h"
  13 #include <sys/ioctl.h>
  14 #include <sys/mman.h>
  15
  16 #include <linux/kvm.h>
  17
  18 #include "qemu-common.h"
  19 #include "cpu.h"
  20 #include "qemu/error-report.h"
  21 #include "qemu/timer.h"
  22 #include "sysemu/sysemu.h"
  23 #include "sysemu/kvm.h"
  24 #include "sysemu/cpus.h"
  25 #include "kvm_mips.h"
  26 #include "exec/memattrs.h"
  27
  28 #define DEBUG_KVM 0
  29
  30 #define DPRINTF(fmt, ...) \
  31     do { if (DEBUG_KVM) { fprintf(stderr, fmt, ## __VA_ARGS__); } } while (0)
  32
  33 static int kvm_mips_fpu_cap;
  34 static int kvm_mips_msa_cap;
  35
  36 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
  37     KVM_CAP_LAST_INFO
  38 };
  39
  40 static void kvm_mips_update_state(void *opaque, int running, RunState state);
  41
  42 unsigned long kvm_arch_vcpu_id(CPUState *cs)
  43 {
  44     return cs->cpu_index;
  45 }
  46
  47 int kvm_arch_init(MachineState *ms, KVMState *s)
  48 {
  49     /* MIPS has 128 signals */
  50     kvm_set_sigmask_len(s, 16);
  51
  52     kvm_mips_fpu_cap = kvm_check_extension(s, KVM_CAP_MIPS_FPU);
  53     kvm_mips_msa_cap = kvm_check_extension(s, KVM_CAP_MIPS_MSA);
  54
  55     DPRINTF("%s\n", __func__);
  56     return 0;
  57 }
  58
  59 int kvm_arch_init_vcpu(CPUState *cs)
  60 {
  61     MIPSCPU *cpu = MIPS_CPU(cs);
  62     CPUMIPSState *env = &cpu->env;
  63     int ret = 0;
  64
  65     qemu_add_vm_change_state_handler(kvm_mips_update_state, cs);
  66
  67     if (kvm_mips_fpu_cap && env->CP0_Config1 & (1 << CP0C1_FP)) {
  68         ret = kvm_vcpu_enable_cap(cs, KVM_CAP_MIPS_FPU, 0, 0);
  69         if (ret < 0) {
  70             /* mark unsupported so it gets disabled on reset */
  71             kvm_mips_fpu_cap = 0;
  72             ret = 0;
  73         }
  74     }
  75
  76     if (kvm_mips_msa_cap && env->CP0_Config3 & (1 << CP0C3_MSAP)) {
  77         ret = kvm_vcpu_enable_cap(cs, KVM_CAP_MIPS_MSA, 0, 0);
  78         if (ret < 0) {
  79             /* mark unsupported so it gets disabled on reset */
  80             kvm_mips_msa_cap = 0;
  81             ret = 0;
  82         }
  83     }
  84
  85     DPRINTF("%s\n", __func__);
  86     return ret;
  87 }
  88
  89 void kvm_mips_reset_vcpu(MIPSCPU *cpu)
  90 {
  91     CPUMIPSState *env = &cpu->env;
  92
  93     if (!kvm_mips_fpu_cap && env->CP0_Config1 & (1 << CP0C1_FP)) {
  94         fprintf(stderr, "Warning: KVM does not support FPU, disabling\n");
  95         env->CP0_Config1 &= ~(1 << CP0C1_FP);
  96     }
  97     if (!kvm_mips_msa_cap && env->CP0_Config3 & (1 << CP0C3_MSAP)) {
  98         fprintf(stderr, "Warning: KVM does not support MSA, disabling\n");
  99         env->CP0_Config3 &= ~(1 << CP0C3_MSAP);
 100     }
 101
 102     DPRINTF("%s\n", __func__);
 103 }
 104
 105 int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
 106 {
 107     DPRINTF("%s\n", __func__);
 108     return 0;
 109 }
 110
 111 int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
 112 {
 113     DPRINTF("%s\n", __func__);
 114     return 0;
 115 }
 116
 117 static inline int cpu_mips_io_interrupts_pending(MIPSCPU *cpu)
 118 {
 119     CPUMIPSState *env = &cpu->env;
 120
 121     return env->CP0_Cause & (0x1 << (2 + CP0Ca_IP));
 122 }
 123
 124
 125 void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
 126 {
 127     MIPSCPU *cpu = MIPS_CPU(cs);
 128     int r;
 129     struct kvm_mips_interrupt intr;
 130
 131     qemu_mutex_lock_iothread();
 132
 133     if ((cs->interrupt_request & CPU_INTERRUPT_HARD) &&
 134             cpu_mips_io_interrupts_pending(cpu)) {
 135         intr.cpu = -1;
 136         intr.irq = 2;
 137         r = kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr);
 138         if (r < 0) {
 139             error_report("%s: cpu %d: failed to inject IRQ %x",
 140                          __func__, cs->cpu_index, intr.irq);
 141         }
 142     }
 143
 144     qemu_mutex_unlock_iothread();
 145 }
 146
 147 MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
 148 {
 149     return MEMTXATTRS_UNSPECIFIED;
 150 }
 151
 152 int kvm_arch_process_async_events(CPUState *cs)
 153 {
 154     return cs->halted;
 155 }
 156
 157 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
 158 {
 159     int ret;
 160
 161     DPRINTF("%s\n", __func__);
 162     switch (run->exit_reason) {
 163     default:
 164         error_report("%s: unknown exit reason %d",
 165                      __func__, run->exit_reason);
 166         ret = -1;
 167         break;
 168     }
 169
 170     return ret;
 171 }
 172
 173 bool kvm_arch_stop_on_emulation_error(CPUState *cs)
 174 {
 175     DPRINTF("%s\n", __func__);
 176     return true;
 177 }
 178
 179 int kvm_arch_on_sigbus_vcpu(CPUState *cs, int code, void *addr)
 180 {
 181     DPRINTF("%s\n", __func__);
 182     return 1;
 183 }
 184
 185 int kvm_arch_on_sigbus(int code, void *addr)
 186 {
 187     DPRINTF("%s\n", __func__);
 188     return 1;
 189 }
 190
 191 void kvm_arch_init_irq_routing(KVMState *s)
 192 {
 193 }
 194
 195 int kvm_mips_set_interrupt(MIPSCPU *cpu, int irq, int level)
 196 {
 197     CPUState *cs = CPU(cpu);
 198     struct kvm_mips_interrupt intr;
 199
 200     if (!kvm_enabled()) {
 201         return 0;
 202     }
 203
 204     intr.cpu = -1;
 205
 206     if (level) {
 207         intr.irq = irq;
 208     } else {
 209         intr.irq = -irq;
 210     }
 211
 212     kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr);
 213
 214     return 0;
 215 }
 216
 217 int kvm_mips_set_ipi_interrupt(MIPSCPU *cpu, int irq, int level)
 218 {
 219     CPUState *cs = current_cpu;
 220     CPUState *dest_cs = CPU(cpu);
 221     struct kvm_mips_interrupt intr;
 222
 223     if (!kvm_enabled()) {
 224         return 0;
 225     }
 226
 227     intr.cpu = dest_cs->cpu_index;
 228
 229     if (level) {
 230         intr.irq = irq;
 231     } else {
 232         intr.irq = -irq;
 233     }
 234
 235     DPRINTF("%s: CPU %d, IRQ: %d\n", __func__, intr.cpu, intr.irq);
 236
 237     kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr);
 238
 239     return 0;
 240 }
 241
 242 #define MIPS_CP0_32(_R, _S)                                     \
 243     (KVM_REG_MIPS_CP0 | KVM_REG_SIZE_U32 | (8 * (_R) + (_S)))
 244
 245 #define MIPS_CP0_64(_R, _S)                                     \
 246     (KVM_REG_MIPS_CP0 | KVM_REG_SIZE_U64 | (8 * (_R) + (_S)))
 247
 248 #define KVM_REG_MIPS_CP0_INDEX          MIPS_CP0_32(0, 0)
 249 #define KVM_REG_MIPS_CP0_CONTEXT        MIPS_CP0_64(4, 0)
 250 #define KVM_REG_MIPS_CP0_USERLOCAL      MIPS_CP0_64(4, 2)
 251 #define KVM_REG_MIPS_CP0_PAGEMASK       MIPS_CP0_32(5, 0)
 252 #define KVM_REG_MIPS_CP0_WIRED          MIPS_CP0_32(6, 0)
 253 #define KVM_REG_MIPS_CP0_HWRENA         MIPS_CP0_32(7, 0)
 254 #define KVM_REG_MIPS_CP0_BADVADDR       MIPS_CP0_64(8, 0)
 255 #define KVM_REG_MIPS_CP0_COUNT          MIPS_CP0_32(9, 0)
 256 #define KVM_REG_MIPS_CP0_ENTRYHI        MIPS_CP0_64(10, 0)
 257 #define KVM_REG_MIPS_CP0_COMPARE        MIPS_CP0_32(11, 0)
 258 #define KVM_REG_MIPS_CP0_STATUS         MIPS_CP0_32(12, 0)
 259 #define KVM_REG_MIPS_CP0_CAUSE          MIPS_CP0_32(13, 0)
 260 #define KVM_REG_MIPS_CP0_EPC            MIPS_CP0_64(14, 0)
 261 #define KVM_REG_MIPS_CP0_PRID           MIPS_CP0_32(15, 0)
 262 #define KVM_REG_MIPS_CP0_CONFIG         MIPS_CP0_32(16, 0)
 263 #define KVM_REG_MIPS_CP0_CONFIG1        MIPS_CP0_32(16, 1)
 264 #define KVM_REG_MIPS_CP0_CONFIG2        MIPS_CP0_32(16, 2)
 265 #define KVM_REG_MIPS_CP0_CONFIG3        MIPS_CP0_32(16, 3)
 266 #define KVM_REG_MIPS_CP0_CONFIG4        MIPS_CP0_32(16, 4)
 267 #define KVM_REG_MIPS_CP0_CONFIG5        MIPS_CP0_32(16, 5)
 268 #define KVM_REG_MIPS_CP0_ERROREPC       MIPS_CP0_64(30, 0)
 269
 270 static inline int kvm_mips_put_one_reg(CPUState *cs, uint64_t reg_id,
 271                                        int32_t *addr)
 272 {
 273     struct kvm_one_reg cp0reg = {
 274         .id = reg_id,
 275         .addr = (uintptr_t)addr
 276     };
 277
 278     return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg);
 279 }
 280
 281 static inline int kvm_mips_put_one_ureg(CPUState *cs, uint64_t reg_id,
 282                                         uint32_t *addr)
 283 {
 284     struct kvm_one_reg cp0reg = {
 285         .id = reg_id,
 286         .addr = (uintptr_t)addr
 287     };
 288
 289     return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg);
 290 }
 291
 292 static inline int kvm_mips_put_one_ulreg(CPUState *cs, uint64_t reg_id,
 293                                          target_ulong *addr)
 294 {
 295     uint64_t val64 = *addr;
 296     struct kvm_one_reg cp0reg = {
 297         .id = reg_id,
 298         .addr = (uintptr_t)&val64
 299     };
 300
 301     return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg);
 302 }
 303
 304 static inline int kvm_mips_put_one_reg64(CPUState *cs, uint64_t reg_id,
 305                                          int64_t *addr)
 306 {
 307     struct kvm_one_reg cp0reg = {
 308         .id = reg_id,
 309         .addr = (uintptr_t)addr
 310     };
 311
 312     return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg);
 313 }
 314
 315 static inline int kvm_mips_put_one_ureg64(CPUState *cs, uint64_t reg_id,
 316                                           uint64_t *addr)
 317 {
 318     struct kvm_one_reg cp0reg = {
 319         .id = reg_id,
 320         .addr = (uintptr_t)addr
 321     };
 322
 323     return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &cp0reg);
 324 }
 325
 326 static inline int kvm_mips_get_one_reg(CPUState *cs, uint64_t reg_id,
 327                                        int32_t *addr)
 328 {
 329     struct kvm_one_reg cp0reg = {
 330         .id = reg_id,
 331         .addr = (uintptr_t)addr
 332     };
 333
 334     return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg);
 335 }
 336
 337 static inline int kvm_mips_get_one_ureg(CPUState *cs, uint64_t reg_id,
 338                                         uint32_t *addr)
 339 {
 340     struct kvm_one_reg cp0reg = {
 341         .id = reg_id,
 342         .addr = (uintptr_t)addr
 343     };
 344
 345     return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg);
 346 }
 347
 348 static inline int kvm_mips_get_one_ulreg(CPUState *cs, uint64_t reg_id,
 349                                          target_ulong *addr)
 350 {
 351     int ret;
 352     uint64_t val64 = 0;
 353     struct kvm_one_reg cp0reg = {
 354         .id = reg_id,
 355         .addr = (uintptr_t)&val64
 356     };
 357
 358     ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg);
 359     if (ret >= 0) {
 360         *addr = val64;
 361     }
 362     return ret;
 363 }
 364
 365 static inline int kvm_mips_get_one_reg64(CPUState *cs, uint64_t reg_id,
 366                                          int64_t *addr)
 367 {
 368     struct kvm_one_reg cp0reg = {
 369         .id = reg_id,
 370         .addr = (uintptr_t)addr
 371     };
 372
 373     return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg);
 374 }
 375
 376 static inline int kvm_mips_get_one_ureg64(CPUState *cs, uint64_t reg_id,
 377                                           uint64_t *addr)
 378 {
 379     struct kvm_one_reg cp0reg = {
 380         .id = reg_id,
 381         .addr = (uintptr_t)addr
 382     };
 383
 384     return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &cp0reg);
 385 }
 386
 387 #define KVM_REG_MIPS_CP0_CONFIG_MASK    (1U << CP0C0_M)
 388 #define KVM_REG_MIPS_CP0_CONFIG1_MASK   ((1U << CP0C1_M) | \
 389                                          (1U << CP0C1_FP))
 390 #define KVM_REG_MIPS_CP0_CONFIG2_MASK   (1U << CP0C2_M)
 391 #define KVM_REG_MIPS_CP0_CONFIG3_MASK   ((1U << CP0C3_M) | \
 392                                          (1U << CP0C3_MSAP))
 393 #define KVM_REG_MIPS_CP0_CONFIG4_MASK   (1U << CP0C4_M)
 394 #define KVM_REG_MIPS_CP0_CONFIG5_MASK   ((1U << CP0C5_MSAEn) | \
 395                                          (1U << CP0C5_UFE) | \
 396                                          (1U << CP0C5_FRE) | \
 397                                          (1U << CP0C5_UFR))
 398
 399 static inline int kvm_mips_change_one_reg(CPUState *cs, uint64_t reg_id,
 400                                           int32_t *addr, int32_t mask)
 401 {
 402     int err;
 403     int32_t tmp, change;
 404
 405     err = kvm_mips_get_one_reg(cs, reg_id, &tmp);
 406     if (err < 0) {
 407         return err;
 408     }
 409
 410     /* only change bits in mask */
 411     change = (*addr ^ tmp) & mask;
 412     if (!change) {
 413         return 0;
 414     }
 415
 416     tmp = tmp ^ change;
 417     return kvm_mips_put_one_reg(cs, reg_id, &tmp);
 418 }
 419
 420 /*
 421  * We freeze the KVM timer when either the VM clock is stopped or the state is
 422  * saved (the state is dirty).
 423  */
 424
 425 /*
 426  * Save the state of the KVM timer when VM clock is stopped or state is synced
 427  * to QEMU.
 428  */
 429 static int kvm_mips_save_count(CPUState *cs)
 430 {
 431     MIPSCPU *cpu = MIPS_CPU(cs);
 432     CPUMIPSState *env = &cpu->env;
 433     uint64_t count_ctl;
 434     int err, ret = 0;
 435
 436     /* freeze KVM timer */
 437     err = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl);
 438     if (err < 0) {
 439         DPRINTF("%s: Failed to get COUNT_CTL (%d)\n", __func__, err);
 440         ret = err;
 441     } else if (!(count_ctl & KVM_REG_MIPS_COUNT_CTL_DC)) {
 442         count_ctl |= KVM_REG_MIPS_COUNT_CTL_DC;
 443         err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl);
 444         if (err < 0) {
 445             DPRINTF("%s: Failed to set COUNT_CTL.DC=1 (%d)\n", __func__, err);
 446             ret = err;
 447         }
 448     }
 449
 450     /* read CP0_Cause */
 451     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CAUSE, &env->CP0_Cause);
 452     if (err < 0) {
 453         DPRINTF("%s: Failed to get CP0_CAUSE (%d)\n", __func__, err);
 454         ret = err;
 455     }
 456
 457     /* read CP0_Count */
 458     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_COUNT, &env->CP0_Count);
 459     if (err < 0) {
 460         DPRINTF("%s: Failed to get CP0_COUNT (%d)\n", __func__, err);
 461         ret = err;
 462     }
 463
 464     return ret;
 465 }
 466
 467 /*
 468  * Restore the state of the KVM timer when VM clock is restarted or state is
 469  * synced to KVM.
 470  */
 471 static int kvm_mips_restore_count(CPUState *cs)
 472 {
 473     MIPSCPU *cpu = MIPS_CPU(cs);
 474     CPUMIPSState *env = &cpu->env;
 475     uint64_t count_ctl;
 476     int err_dc, err, ret = 0;
 477
 478     /* check the timer is frozen */
 479     err_dc = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl);
 480     if (err_dc < 0) {
 481         DPRINTF("%s: Failed to get COUNT_CTL (%d)\n", __func__, err_dc);
 482         ret = err_dc;
 483     } else if (!(count_ctl & KVM_REG_MIPS_COUNT_CTL_DC)) {
 484         /* freeze timer (sets COUNT_RESUME for us) */
 485         count_ctl |= KVM_REG_MIPS_COUNT_CTL_DC;
 486         err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl);
 487         if (err < 0) {
 488             DPRINTF("%s: Failed to set COUNT_CTL.DC=1 (%d)\n", __func__, err);
 489             ret = err;
 490         }
 491     }
 492
 493     /* load CP0_Cause */
 494     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_CAUSE, &env->CP0_Cause);
 495     if (err < 0) {
 496         DPRINTF("%s: Failed to put CP0_CAUSE (%d)\n", __func__, err);
 497         ret = err;
 498     }
 499
 500     /* load CP0_Count */
 501     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_COUNT, &env->CP0_Count);
 502     if (err < 0) {
 503         DPRINTF("%s: Failed to put CP0_COUNT (%d)\n", __func__, err);
 504         ret = err;
 505     }
 506
 507     /* resume KVM timer */
 508     if (err_dc >= 0) {
 509         count_ctl &= ~KVM_REG_MIPS_COUNT_CTL_DC;
 510         err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_CTL, &count_ctl);
 511         if (err < 0) {
 512             DPRINTF("%s: Failed to set COUNT_CTL.DC=0 (%d)\n", __func__, err);
 513             ret = err;
 514         }
 515     }
 516
 517     return ret;
 518 }
 519
 520 /*
 521  * Handle the VM clock being started or stopped
 522  */
 523 static void kvm_mips_update_state(void *opaque, int running, RunState state)
 524 {
 525     CPUState *cs = opaque;
 526     int ret;
 527     uint64_t count_resume;
 528
 529     /*
 530      * If state is already dirty (synced to QEMU) then the KVM timer state is
 531      * already saved and can be restored when it is synced back to KVM.
 532      */
 533     if (!running) {
 534         if (!cs->kvm_vcpu_dirty) {
 535             ret = kvm_mips_save_count(cs);
 536             if (ret < 0) {
 537                 fprintf(stderr, "Failed saving count\n");
 538             }
 539         }
 540     } else {
 541         /* Set clock restore time to now */
 542         count_resume = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
 543         ret = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_COUNT_RESUME,
 544                                       &count_resume);
 545         if (ret < 0) {
 546             fprintf(stderr, "Failed setting COUNT_RESUME\n");
 547             return;
 548         }
 549
 550         if (!cs->kvm_vcpu_dirty) {
 551             ret = kvm_mips_restore_count(cs);
 552             if (ret < 0) {
 553                 fprintf(stderr, "Failed restoring count\n");
 554             }
 555         }
 556     }
 557 }
 558
 559 static int kvm_mips_put_fpu_registers(CPUState *cs, int level)
 560 {
 561     MIPSCPU *cpu = MIPS_CPU(cs);
 562     CPUMIPSState *env = &cpu->env;
 563     int err, ret = 0;
 564     unsigned int i;
 565
 566     /* Only put FPU state if we're emulating a CPU with an FPU */
 567     if (env->CP0_Config1 & (1 << CP0C1_FP)) {
 568         /* FPU Control Registers */
 569         if (level == KVM_PUT_FULL_STATE) {
 570             err = kvm_mips_put_one_ureg(cs, KVM_REG_MIPS_FCR_IR,
 571                                         &env->active_fpu.fcr0);
 572             if (err < 0) {
 573                 DPRINTF("%s: Failed to put FCR_IR (%d)\n", __func__, err);
 574                 ret = err;
 575             }
 576         }
 577         err = kvm_mips_put_one_ureg(cs, KVM_REG_MIPS_FCR_CSR,
 578                                     &env->active_fpu.fcr31);
 579         if (err < 0) {
 580             DPRINTF("%s: Failed to put FCR_CSR (%d)\n", __func__, err);
 581             ret = err;
 582         }
 583
 584         /*
 585          * FPU register state is a subset of MSA vector state, so don't put FPU
 586          * registers if we're emulating a CPU with MSA.
 587          */
 588         if (!(env->CP0_Config3 & (1 << CP0C3_MSAP))) {
 589             /* Floating point registers */
 590             for (i = 0; i < 32; ++i) {
 591                 if (env->CP0_Status & (1 << CP0St_FR)) {
 592                     err = kvm_mips_put_one_ureg64(cs, KVM_REG_MIPS_FPR_64(i),
 593                                                   &env->active_fpu.fpr[i].d);
 594                 } else {
 595                     err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FPR_32(i),
 596                                     &env->active_fpu.fpr[i].w[FP_ENDIAN_IDX]);
 597                 }
 598                 if (err < 0) {
 599                     DPRINTF("%s: Failed to put FPR%u (%d)\n", __func__, i, err);
 600                     ret = err;
 601                 }
 602             }
 603         }
 604     }
 605
 606     /* Only put MSA state if we're emulating a CPU with MSA */
 607     if (env->CP0_Config3 & (1 << CP0C3_MSAP)) {
 608         /* MSA Control Registers */
 609         if (level == KVM_PUT_FULL_STATE) {
 610             err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_MSA_IR,
 611                                        &env->msair);
 612             if (err < 0) {
 613                 DPRINTF("%s: Failed to put MSA_IR (%d)\n", __func__, err);
 614                 ret = err;
 615             }
 616         }
 617         err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_MSA_CSR,
 618                                    &env->active_tc.msacsr);
 619         if (err < 0) {
 620             DPRINTF("%s: Failed to put MSA_CSR (%d)\n", __func__, err);
 621             ret = err;
 622         }
 623
 624         /* Vector registers (includes FP registers) */
 625         for (i = 0; i < 32; ++i) {
 626             /* Big endian MSA not supported by QEMU yet anyway */
 627             err = kvm_mips_put_one_reg64(cs, KVM_REG_MIPS_VEC_128(i),
 628                                          env->active_fpu.fpr[i].wr.d);
 629             if (err < 0) {
 630                 DPRINTF("%s: Failed to put VEC%u (%d)\n", __func__, i, err);
 631                 ret = err;
 632             }
 633         }
 634     }
 635
 636     return ret;
 637 }
 638
 639 static int kvm_mips_get_fpu_registers(CPUState *cs)
 640 {
 641     MIPSCPU *cpu = MIPS_CPU(cs);
 642     CPUMIPSState *env = &cpu->env;
 643     int err, ret = 0;
 644     unsigned int i;
 645
 646     /* Only get FPU state if we're emulating a CPU with an FPU */
 647     if (env->CP0_Config1 & (1 << CP0C1_FP)) {
 648         /* FPU Control Registers */
 649         err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FCR_IR,
 650                                     &env->active_fpu.fcr0);
 651         if (err < 0) {
 652             DPRINTF("%s: Failed to get FCR_IR (%d)\n", __func__, err);
 653             ret = err;
 654         }
 655         err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FCR_CSR,
 656                                     &env->active_fpu.fcr31);
 657         if (err < 0) {
 658             DPRINTF("%s: Failed to get FCR_CSR (%d)\n", __func__, err);
 659             ret = err;
 660         } else {
 661             restore_fp_status(env);
 662         }
 663
 664         /*
 665          * FPU register state is a subset of MSA vector state, so don't save FPU
 666          * registers if we're emulating a CPU with MSA.
 667          */
 668         if (!(env->CP0_Config3 & (1 << CP0C3_MSAP))) {
 669             /* Floating point registers */
 670             for (i = 0; i < 32; ++i) {
 671                 if (env->CP0_Status & (1 << CP0St_FR)) {
 672                     err = kvm_mips_get_one_ureg64(cs, KVM_REG_MIPS_FPR_64(i),
 673                                                   &env->active_fpu.fpr[i].d);
 674                 } else {
 675                     err = kvm_mips_get_one_ureg(cs, KVM_REG_MIPS_FPR_32(i),
 676                                     &env->active_fpu.fpr[i].w[FP_ENDIAN_IDX]);
 677                 }
 678                 if (err < 0) {
 679                     DPRINTF("%s: Failed to get FPR%u (%d)\n", __func__, i, err);
 680                     ret = err;
 681                 }
 682             }
 683         }
 684     }
 685
 686     /* Only get MSA state if we're emulating a CPU with MSA */
 687     if (env->CP0_Config3 & (1 << CP0C3_MSAP)) {
 688         /* MSA Control Registers */
 689         err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_MSA_IR,
 690                                    &env->msair);
 691         if (err < 0) {
 692             DPRINTF("%s: Failed to get MSA_IR (%d)\n", __func__, err);
 693             ret = err;
 694         }
 695         err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_MSA_CSR,
 696                                    &env->active_tc.msacsr);
 697         if (err < 0) {
 698             DPRINTF("%s: Failed to get MSA_CSR (%d)\n", __func__, err);
 699             ret = err;
 700         } else {
 701             restore_msa_fp_status(env);
 702         }
 703
 704         /* Vector registers (includes FP registers) */
 705         for (i = 0; i < 32; ++i) {
 706             /* Big endian MSA not supported by QEMU yet anyway */
 707             err = kvm_mips_get_one_reg64(cs, KVM_REG_MIPS_VEC_128(i),
 708                                          env->active_fpu.fpr[i].wr.d);
 709             if (err < 0) {
 710                 DPRINTF("%s: Failed to get VEC%u (%d)\n", __func__, i, err);
 711                 ret = err;
 712             }
 713         }
 714     }
 715
 716     return ret;
 717 }
 718
 719
 720 static int kvm_mips_put_cp0_registers(CPUState *cs, int level)
 721 {
 722     MIPSCPU *cpu = MIPS_CPU(cs);
 723     CPUMIPSState *env = &cpu->env;
 724     int err, ret = 0;
 725
 726     (void)level;
 727
 728     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_INDEX, &env->CP0_Index);
 729     if (err < 0) {
 730         DPRINTF("%s: Failed to put CP0_INDEX (%d)\n", __func__, err);
 731         ret = err;
 732     }
 733     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_CONTEXT,
 734                                  &env->CP0_Context);
 735     if (err < 0) {
 736         DPRINTF("%s: Failed to put CP0_CONTEXT (%d)\n", __func__, err);
 737         ret = err;
 738     }
 739     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_USERLOCAL,
 740                                  &env->active_tc.CP0_UserLocal);
 741     if (err < 0) {
 742         DPRINTF("%s: Failed to put CP0_USERLOCAL (%d)\n", __func__, err);
 743         ret = err;
 744     }
 745     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_PAGEMASK,
 746                                &env->CP0_PageMask);
 747     if (err < 0) {
 748         DPRINTF("%s: Failed to put CP0_PAGEMASK (%d)\n", __func__, err);
 749         ret = err;
 750     }
 751     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_WIRED, &env->CP0_Wired);
 752     if (err < 0) {
 753         DPRINTF("%s: Failed to put CP0_WIRED (%d)\n", __func__, err);
 754         ret = err;
 755     }
 756     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_HWRENA, &env->CP0_HWREna);
 757     if (err < 0) {
 758         DPRINTF("%s: Failed to put CP0_HWRENA (%d)\n", __func__, err);
 759         ret = err;
 760     }
 761     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_BADVADDR,
 762                                  &env->CP0_BadVAddr);
 763     if (err < 0) {
 764         DPRINTF("%s: Failed to put CP0_BADVADDR (%d)\n", __func__, err);
 765         ret = err;
 766     }
 767
 768     /* If VM clock stopped then state will be restored when it is restarted */
 769     if (runstate_is_running()) {
 770         err = kvm_mips_restore_count(cs);
 771         if (err < 0) {
 772             ret = err;
 773         }
 774     }
 775
 776     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_ENTRYHI,
 777                                  &env->CP0_EntryHi);
 778     if (err < 0) {
 779         DPRINTF("%s: Failed to put CP0_ENTRYHI (%d)\n", __func__, err);
 780         ret = err;
 781     }
 782     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_COMPARE,
 783                                &env->CP0_Compare);
 784     if (err < 0) {
 785         DPRINTF("%s: Failed to put CP0_COMPARE (%d)\n", __func__, err);
 786         ret = err;
 787     }
 788     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_STATUS, &env->CP0_Status);
 789     if (err < 0) {
 790         DPRINTF("%s: Failed to put CP0_STATUS (%d)\n", __func__, err);
 791         ret = err;
 792     }
 793     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_EPC, &env->CP0_EPC);
 794     if (err < 0) {
 795         DPRINTF("%s: Failed to put CP0_EPC (%d)\n", __func__, err);
 796         ret = err;
 797     }
 798     err = kvm_mips_put_one_reg(cs, KVM_REG_MIPS_CP0_PRID, &env->CP0_PRid);
 799     if (err < 0) {
 800         DPRINTF("%s: Failed to put CP0_PRID (%d)\n", __func__, err);
 801         ret = err;
 802     }
 803     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG,
 804                                   &env->CP0_Config0,
 805                                   KVM_REG_MIPS_CP0_CONFIG_MASK);
 806     if (err < 0) {
 807         DPRINTF("%s: Failed to change CP0_CONFIG (%d)\n", __func__, err);
 808         ret = err;
 809     }
 810     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG1,
 811                                   &env->CP0_Config1,
 812                                   KVM_REG_MIPS_CP0_CONFIG1_MASK);
 813     if (err < 0) {
 814         DPRINTF("%s: Failed to change CP0_CONFIG1 (%d)\n", __func__, err);
 815         ret = err;
 816     }
 817     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG2,
 818                                   &env->CP0_Config2,
 819                                   KVM_REG_MIPS_CP0_CONFIG2_MASK);
 820     if (err < 0) {
 821         DPRINTF("%s: Failed to change CP0_CONFIG2 (%d)\n", __func__, err);
 822         ret = err;
 823     }
 824     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG3,
 825                                   &env->CP0_Config3,
 826                                   KVM_REG_MIPS_CP0_CONFIG3_MASK);
 827     if (err < 0) {
 828         DPRINTF("%s: Failed to change CP0_CONFIG3 (%d)\n", __func__, err);
 829         ret = err;
 830     }
 831     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG4,
 832                                   &env->CP0_Config4,
 833                                   KVM_REG_MIPS_CP0_CONFIG4_MASK);
 834     if (err < 0) {
 835         DPRINTF("%s: Failed to change CP0_CONFIG4 (%d)\n", __func__, err);
 836         ret = err;
 837     }
 838     err = kvm_mips_change_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG5,
 839                                   &env->CP0_Config5,
 840                                   KVM_REG_MIPS_CP0_CONFIG5_MASK);
 841     if (err < 0) {
 842         DPRINTF("%s: Failed to change CP0_CONFIG5 (%d)\n", __func__, err);
 843         ret = err;
 844     }
 845     err = kvm_mips_put_one_ulreg(cs, KVM_REG_MIPS_CP0_ERROREPC,
 846                                  &env->CP0_ErrorEPC);
 847     if (err < 0) {
 848         DPRINTF("%s: Failed to put CP0_ERROREPC (%d)\n", __func__, err);
 849         ret = err;
 850     }
 851
 852     return ret;
 853 }
 854
 855 static int kvm_mips_get_cp0_registers(CPUState *cs)
 856 {
 857     MIPSCPU *cpu = MIPS_CPU(cs);
 858     CPUMIPSState *env = &cpu->env;
 859     int err, ret = 0;
 860
 861     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_INDEX, &env->CP0_Index);
 862     if (err < 0) {
 863         DPRINTF("%s: Failed to get CP0_INDEX (%d)\n", __func__, err);
 864         ret = err;
 865     }
 866     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_CONTEXT,
 867                                  &env->CP0_Context);
 868     if (err < 0) {
 869         DPRINTF("%s: Failed to get CP0_CONTEXT (%d)\n", __func__, err);
 870         ret = err;
 871     }
 872     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_USERLOCAL,
 873                                  &env->active_tc.CP0_UserLocal);
 874     if (err < 0) {
 875         DPRINTF("%s: Failed to get CP0_USERLOCAL (%d)\n", __func__, err);
 876         ret = err;
 877     }
 878     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_PAGEMASK,
 879                                &env->CP0_PageMask);
 880     if (err < 0) {
 881         DPRINTF("%s: Failed to get CP0_PAGEMASK (%d)\n", __func__, err);
 882         ret = err;
 883     }
 884     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_WIRED, &env->CP0_Wired);
 885     if (err < 0) {
 886         DPRINTF("%s: Failed to get CP0_WIRED (%d)\n", __func__, err);
 887         ret = err;
 888     }
 889     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_HWRENA, &env->CP0_HWREna);
 890     if (err < 0) {
 891         DPRINTF("%s: Failed to get CP0_HWRENA (%d)\n", __func__, err);
 892         ret = err;
 893     }
 894     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_BADVADDR,
 895                                  &env->CP0_BadVAddr);
 896     if (err < 0) {
 897         DPRINTF("%s: Failed to get CP0_BADVADDR (%d)\n", __func__, err);
 898         ret = err;
 899     }
 900     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_ENTRYHI,
 901                                  &env->CP0_EntryHi);
 902     if (err < 0) {
 903         DPRINTF("%s: Failed to get CP0_ENTRYHI (%d)\n", __func__, err);
 904         ret = err;
 905     }
 906     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_COMPARE,
 907                                &env->CP0_Compare);
 908     if (err < 0) {
 909         DPRINTF("%s: Failed to get CP0_COMPARE (%d)\n", __func__, err);
 910         ret = err;
 911     }
 912     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_STATUS, &env->CP0_Status);
 913     if (err < 0) {
 914         DPRINTF("%s: Failed to get CP0_STATUS (%d)\n", __func__, err);
 915         ret = err;
 916     }
 917
 918     /* If VM clock stopped then state was already saved when it was stopped */
 919     if (runstate_is_running()) {
 920         err = kvm_mips_save_count(cs);
 921         if (err < 0) {
 922             ret = err;
 923         }
 924     }
 925
 926     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_EPC, &env->CP0_EPC);
 927     if (err < 0) {
 928         DPRINTF("%s: Failed to get CP0_EPC (%d)\n", __func__, err);
 929         ret = err;
 930     }
 931     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_PRID, &env->CP0_PRid);
 932     if (err < 0) {
 933         DPRINTF("%s: Failed to get CP0_PRID (%d)\n", __func__, err);
 934         ret = err;
 935     }
 936     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG, &env->CP0_Config0);
 937     if (err < 0) {
 938         DPRINTF("%s: Failed to get CP0_CONFIG (%d)\n", __func__, err);
 939         ret = err;
 940     }
 941     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG1, &env->CP0_Config1);
 942     if (err < 0) {
 943         DPRINTF("%s: Failed to get CP0_CONFIG1 (%d)\n", __func__, err);
 944         ret = err;
 945     }
 946     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG2, &env->CP0_Config2);
 947     if (err < 0) {
 948         DPRINTF("%s: Failed to get CP0_CONFIG2 (%d)\n", __func__, err);
 949         ret = err;
 950     }
 951     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG3, &env->CP0_Config3);
 952     if (err < 0) {
 953         DPRINTF("%s: Failed to get CP0_CONFIG3 (%d)\n", __func__, err);
 954         ret = err;
 955     }
 956     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG4, &env->CP0_Config4);
 957     if (err < 0) {
 958         DPRINTF("%s: Failed to get CP0_CONFIG4 (%d)\n", __func__, err);
 959         ret = err;
 960     }
 961     err = kvm_mips_get_one_reg(cs, KVM_REG_MIPS_CP0_CONFIG5, &env->CP0_Config5);
 962     if (err < 0) {
 963         DPRINTF("%s: Failed to get CP0_CONFIG5 (%d)\n", __func__, err);
 964         ret = err;
 965     }
 966     err = kvm_mips_get_one_ulreg(cs, KVM_REG_MIPS_CP0_ERROREPC,
 967                                  &env->CP0_ErrorEPC);
 968     if (err < 0) {
 969         DPRINTF("%s: Failed to get CP0_ERROREPC (%d)\n", __func__, err);
 970         ret = err;
 971     }
 972
 973     return ret;
 974 }
 975
 976 int kvm_arch_put_registers(CPUState *cs, int level)
 977 {
 978     MIPSCPU *cpu = MIPS_CPU(cs);
 979     CPUMIPSState *env = &cpu->env;
 980     struct kvm_regs regs;
 981     int ret;
 982     int i;
 983
 984     /* Set the registers based on QEMU's view of things */
 985     for (i = 0; i < 32; i++) {
 986         regs.gpr[i] = (int64_t)(target_long)env->active_tc.gpr[i];
 987     }
 988
 989     regs.hi = (int64_t)(target_long)env->active_tc.HI[0];
 990     regs.lo = (int64_t)(target_long)env->active_tc.LO[0];
 991     regs.pc = (int64_t)(target_long)env->active_tc.PC;
 992
 993     ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
 994
 995     if (ret < 0) {
 996         return ret;
 997     }
 998
 999     ret = kvm_mips_put_cp0_registers(cs, level);
1000     if (ret < 0) {
1001         return ret;
1002     }
1003
1004     ret = kvm_mips_put_fpu_registers(cs, level);
1005     if (ret < 0) {
1006         return ret;
1007     }
1008
1009     return ret;
1010 }
1011
1012 int kvm_arch_get_registers(CPUState *cs)
1013 {
1014     MIPSCPU *cpu = MIPS_CPU(cs);
1015     CPUMIPSState *env = &cpu->env;
1016     int ret = 0;
1017     struct kvm_regs regs;
1018     int i;
1019
1020     /* Get the current register set as KVM seems it */
1021     ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
1022
1023     if (ret < 0) {
1024         return ret;
1025     }
1026
1027     for (i = 0; i < 32; i++) {
1028         env->active_tc.gpr[i] = regs.gpr[i];
1029     }
1030
1031     env->active_tc.HI[0] = regs.hi;
1032     env->active_tc.LO[0] = regs.lo;
1033     env->active_tc.PC = regs.pc;
1034
1035     kvm_mips_get_cp0_registers(cs);
1036     kvm_mips_get_fpu_registers(cs);
1037
1038     return ret;
1039 }
1040
1041 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
1042                              uint64_t address, uint32_t data, PCIDevice *dev)
1043 {
1044     return 0;
1045 }
1046
1047 int kvm_arch_msi_data_to_gsi(uint32_t data)
1048 {
1049     abort();
1050 }