arch/powerpc/include/asm/interrupt.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef _ASM_POWERPC_INTERRUPT_H
   3 #define _ASM_POWERPC_INTERRUPT_H
   4
   5 /* BookE/4xx */
   6 #define INTERRUPT_CRITICAL_INPUT  0x100
   7
   8 /* BookE */
   9 #define INTERRUPT_DEBUG           0xd00
  10 #ifdef CONFIG_BOOKE
  11 #define INTERRUPT_PERFMON         0x260
  12 #define INTERRUPT_DOORBELL        0x280
  13 #endif
  14
  15 /* BookS/4xx/8xx */
  16 #define INTERRUPT_MACHINE_CHECK   0x200
  17
  18 /* BookS/8xx */
  19 #define INTERRUPT_SYSTEM_RESET    0x100
  20
  21 /* BookS */
  22 #define INTERRUPT_DATA_SEGMENT    0x380
  23 #define INTERRUPT_INST_SEGMENT    0x480
  24 #define INTERRUPT_TRACE           0xd00
  25 #define INTERRUPT_H_DATA_STORAGE  0xe00
  26 #define INTERRUPT_HMI                   0xe60
  27 #define INTERRUPT_H_FAC_UNAVAIL   0xf80
  28 #ifdef CONFIG_PPC_BOOK3S
  29 #define INTERRUPT_DOORBELL        0xa00
  30 #define INTERRUPT_PERFMON         0xf00
  31 #define INTERRUPT_ALTIVEC_UNAVAIL       0xf20
  32 #endif
  33
  34 /* BookE/BookS/4xx/8xx */
  35 #define INTERRUPT_DATA_STORAGE    0x300
  36 #define INTERRUPT_INST_STORAGE    0x400
  37 #define INTERRUPT_EXTERNAL              0x500
  38 #define INTERRUPT_ALIGNMENT       0x600
  39 #define INTERRUPT_PROGRAM         0x700
  40 #define INTERRUPT_SYSCALL         0xc00
  41 #define INTERRUPT_TRACE                 0xd00
  42
  43 /* BookE/BookS/44x */
  44 #define INTERRUPT_FP_UNAVAIL      0x800
  45
  46 /* BookE/BookS/44x/8xx */
  47 #define INTERRUPT_DECREMENTER     0x900
  48
  49 #ifndef INTERRUPT_PERFMON
  50 #define INTERRUPT_PERFMON         0x0
  51 #endif
  52
  53 /* 8xx */
  54 #define INTERRUPT_SOFT_EMU_8xx          0x1000
  55 #define INTERRUPT_INST_TLB_MISS_8xx     0x1100
  56 #define INTERRUPT_DATA_TLB_MISS_8xx     0x1200
  57 #define INTERRUPT_INST_TLB_ERROR_8xx    0x1300
  58 #define INTERRUPT_DATA_TLB_ERROR_8xx    0x1400
  59 #define INTERRUPT_DATA_BREAKPOINT_8xx   0x1c00
  60 #define INTERRUPT_INST_BREAKPOINT_8xx   0x1d00
  61
  62 /* 603 */
  63 #define INTERRUPT_INST_TLB_MISS_603             0x1000
  64 #define INTERRUPT_DATA_LOAD_TLB_MISS_603        0x1100
  65 #define INTERRUPT_DATA_STORE_TLB_MISS_603       0x1200
  66
  67 #ifndef __ASSEMBLY__
  68
  69 #include <linux/context_tracking.h>
  70 #include <linux/hardirq.h>
  71 #include <asm/cputime.h>
  72 #include <asm/ftrace.h>
  73 #include <asm/kprobes.h>
  74 #include <asm/runlatch.h>
  75
  76 #ifdef CONFIG_PPC_BOOK3S_64
  77 extern char __end_soft_masked[];
  78 bool search_kernel_soft_mask_table(unsigned long addr);
  79 unsigned long search_kernel_restart_table(unsigned long addr);
  80
  81 DECLARE_STATIC_KEY_FALSE(interrupt_exit_not_reentrant);
  82
  83 static inline bool is_implicit_soft_masked(struct pt_regs *regs)
  84 {
  85         if (regs->msr & MSR_PR)
  86                 return false;
  87
  88         if (regs->nip >= (unsigned long)__end_soft_masked)
  89                 return false;
  90
  91         return search_kernel_soft_mask_table(regs->nip);
  92 }
  93
  94 static inline void srr_regs_clobbered(void)
  95 {
  96         local_paca->srr_valid = 0;
  97         local_paca->hsrr_valid = 0;
  98 }
  99 #else
 100 static inline bool is_implicit_soft_masked(struct pt_regs *regs)
 101 {
 102         return false;
 103 }
 104
 105 static inline void srr_regs_clobbered(void)
 106 {
 107 }
 108 #endif
 109
 110 static inline void nap_adjust_return(struct pt_regs *regs)
 111 {
 112 #ifdef CONFIG_PPC_970_NAP
 113         if (unlikely(test_thread_local_flags(_TLF_NAPPING))) {
 114                 /* Can avoid a test-and-clear because NMIs do not call this */
 115                 clear_thread_local_flags(_TLF_NAPPING);
 116                 regs_set_return_ip(regs, (unsigned long)power4_idle_nap_return);
 117         }
 118 #endif
 119 }
 120
 121 struct interrupt_state {
 122 };
 123
 124 static inline void booke_restore_dbcr0(void)
 125 {
 126 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
 127         unsigned long dbcr0 = current->thread.debug.dbcr0;
 128
 129         if (IS_ENABLED(CONFIG_PPC32) && unlikely(dbcr0 & DBCR0_IDM)) {
 130                 mtspr(SPRN_DBSR, -1);
 131                 mtspr(SPRN_DBCR0, global_dbcr0[smp_processor_id()]);
 132         }
 133 #endif
 134 }
 135
 136 static inline void interrupt_enter_prepare(struct pt_regs *regs, struct interrupt_state *state)
 137 {
 138 #ifdef CONFIG_PPC32
 139         if (!arch_irq_disabled_regs(regs))
 140                 trace_hardirqs_off();
 141
 142         if (user_mode(regs)) {
 143                 kuep_lock();
 144                 account_cpu_user_entry();
 145         } else {
 146                 kuap_save_and_lock(regs);
 147         }
 148 #endif
 149
 150 #ifdef CONFIG_PPC64
 151         if (irq_soft_mask_set_return(IRQS_ALL_DISABLED) == IRQS_ENABLED)
 152                 trace_hardirqs_off();
 153         local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
 154
 155         if (user_mode(regs)) {
 156                 CT_WARN_ON(ct_state() != CONTEXT_USER);
 157                 user_exit_irqoff();
 158
 159                 account_cpu_user_entry();
 160                 account_stolen_time();
 161         } else {
 162                 /*
 163                  * CT_WARN_ON comes here via program_check_exception,
 164                  * so avoid recursion.
 165                  */
 166                 if (TRAP(regs) != INTERRUPT_PROGRAM) {
 167                         CT_WARN_ON(ct_state() != CONTEXT_KERNEL);
 168                         BUG_ON(is_implicit_soft_masked(regs));
 169                 }
 170 #ifdef CONFIG_PPC_BOOK3S
 171                 /* Move this under a debugging check */
 172                 if (arch_irq_disabled_regs(regs))
 173                         BUG_ON(search_kernel_restart_table(regs->nip));
 174 #endif
 175         }
 176         if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
 177                 BUG_ON(!arch_irq_disabled_regs(regs) && !(regs->msr & MSR_EE));
 178 #endif
 179
 180         booke_restore_dbcr0();
 181 }
 182
 183 /*
 184  * Care should be taken to note that interrupt_exit_prepare and
 185  * interrupt_async_exit_prepare do not necessarily return immediately to
 186  * regs context (e.g., if regs is usermode, we don't necessarily return to
 187  * user mode). Other interrupts might be taken between here and return,
 188  * context switch / preemption may occur in the exit path after this, or a
 189  * signal may be delivered, etc.
 190  *
 191  * The real interrupt exit code is platform specific, e.g.,
 192  * interrupt_exit_user_prepare / interrupt_exit_kernel_prepare for 64s.
 193  *
 194  * However interrupt_nmi_exit_prepare does return directly to regs, because
 195  * NMIs do not do "exit work" or replay soft-masked interrupts.
 196  */
 197 static inline void interrupt_exit_prepare(struct pt_regs *regs, struct interrupt_state *state)
 198 {
 199 }
 200
 201 static inline void interrupt_async_enter_prepare(struct pt_regs *regs, struct interrupt_state *state)
 202 {
 203 #ifdef CONFIG_PPC_BOOK3S_64
 204         if (cpu_has_feature(CPU_FTR_CTRL) &&
 205             !test_thread_local_flags(_TLF_RUNLATCH))
 206                 __ppc64_runlatch_on();
 207 #endif
 208
 209         interrupt_enter_prepare(regs, state);
 210         irq_enter();
 211 }
 212
 213 static inline void interrupt_async_exit_prepare(struct pt_regs *regs, struct interrupt_state *state)
 214 {
 215         /*
 216          * Adjust at exit so the main handler sees the true NIA. This must
 217          * come before irq_exit() because irq_exit can enable interrupts, and
 218          * if another interrupt is taken before nap_adjust_return has run
 219          * here, then that interrupt would return directly to idle nap return.
 220          */
 221         nap_adjust_return(regs);
 222
 223         irq_exit();
 224         interrupt_exit_prepare(regs, state);
 225 }
 226
 227 struct interrupt_nmi_state {
 228 #ifdef CONFIG_PPC64
 229         u8 irq_soft_mask;
 230         u8 irq_happened;
 231         u8 ftrace_enabled;
 232         u64 softe;
 233 #endif
 234 };
 235
 236 static inline bool nmi_disables_ftrace(struct pt_regs *regs)
 237 {
 238         /* Allow DEC and PMI to be traced when they are soft-NMI */
 239         if (IS_ENABLED(CONFIG_PPC_BOOK3S_64)) {
 240                 if (TRAP(regs) == INTERRUPT_DECREMENTER)
 241                        return false;
 242                 if (TRAP(regs) == INTERRUPT_PERFMON)
 243                        return false;
 244         }
 245         if (IS_ENABLED(CONFIG_PPC_BOOK3E)) {
 246                 if (TRAP(regs) == INTERRUPT_PERFMON)
 247                         return false;
 248         }
 249
 250         return true;
 251 }
 252
 253 static inline void interrupt_nmi_enter_prepare(struct pt_regs *regs, struct interrupt_nmi_state *state)
 254 {
 255 #ifdef CONFIG_PPC64
 256         state->irq_soft_mask = local_paca->irq_soft_mask;
 257         state->irq_happened = local_paca->irq_happened;
 258         state->softe = regs->softe;
 259
 260         /*
 261          * Set IRQS_ALL_DISABLED unconditionally so irqs_disabled() does
 262          * the right thing, and set IRQ_HARD_DIS. We do not want to reconcile
 263          * because that goes through irq tracing which we don't want in NMI.
 264          */
 265         local_paca->irq_soft_mask = IRQS_ALL_DISABLED;
 266         local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
 267
 268         if (is_implicit_soft_masked(regs)) {
 269                 // Adjust regs->softe soft implicit soft-mask, so
 270                 // arch_irq_disabled_regs(regs) behaves as expected.
 271                 regs->softe = IRQS_ALL_DISABLED;
 272         }
 273         if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
 274                 BUG_ON(!arch_irq_disabled_regs(regs) && !(regs->msr & MSR_EE));
 275
 276         /* Don't do any per-CPU operations until interrupt state is fixed */
 277
 278         if (nmi_disables_ftrace(regs)) {
 279                 state->ftrace_enabled = this_cpu_get_ftrace_enabled();
 280                 this_cpu_set_ftrace_enabled(0);
 281         }
 282 #endif
 283
 284         /*
 285          * Do not use nmi_enter() for pseries hash guest taking a real-mode
 286          * NMI because not everything it touches is within the RMA limit.
 287          */
 288         if (!IS_ENABLED(CONFIG_PPC_BOOK3S_64) ||
 289                         !firmware_has_feature(FW_FEATURE_LPAR) ||
 290                         radix_enabled() || (mfmsr() & MSR_DR))
 291                 nmi_enter();
 292 }
 293
 294 static inline void interrupt_nmi_exit_prepare(struct pt_regs *regs, struct interrupt_nmi_state *state)
 295 {
 296         if (!IS_ENABLED(CONFIG_PPC_BOOK3S_64) ||
 297                         !firmware_has_feature(FW_FEATURE_LPAR) ||
 298                         radix_enabled() || (mfmsr() & MSR_DR))
 299                 nmi_exit();
 300
 301         /*
 302          * nmi does not call nap_adjust_return because nmi should not create
 303          * new work to do (must use irq_work for that).
 304          */
 305
 306 #ifdef CONFIG_PPC64
 307 #ifdef CONFIG_PPC_BOOK3S
 308         if (arch_irq_disabled_regs(regs)) {
 309                 unsigned long rst = search_kernel_restart_table(regs->nip);
 310                 if (rst)
 311                         regs_set_return_ip(regs, rst);
 312         }
 313 #endif
 314
 315         if (nmi_disables_ftrace(regs))
 316                 this_cpu_set_ftrace_enabled(state->ftrace_enabled);
 317
 318         /* Check we didn't change the pending interrupt mask. */
 319         WARN_ON_ONCE((state->irq_happened | PACA_IRQ_HARD_DIS) != local_paca->irq_happened);
 320         regs->softe = state->softe;
 321         local_paca->irq_happened = state->irq_happened;
 322         local_paca->irq_soft_mask = state->irq_soft_mask;
 323 #endif
 324 }
 325
 326 /*
 327  * Don't use noinstr here like x86, but rather add NOKPROBE_SYMBOL to each
 328  * function definition. The reason for this is the noinstr section is placed
 329  * after the main text section, i.e., very far away from the interrupt entry
 330  * asm. That creates problems with fitting linker stubs when building large
 331  * kernels.
 332  */
 333 #define interrupt_handler __visible noinline notrace __no_kcsan __no_sanitize_address
 334
 335 /**
 336  * DECLARE_INTERRUPT_HANDLER_RAW - Declare raw interrupt handler function
 337  * @func:       Function name of the entry point
 338  * @returns:    Returns a value back to asm caller
 339  */
 340 #define DECLARE_INTERRUPT_HANDLER_RAW(func)                             \
 341         __visible long func(struct pt_regs *regs)
 342
 343 /**
 344  * DEFINE_INTERRUPT_HANDLER_RAW - Define raw interrupt handler function
 345  * @func:       Function name of the entry point
 346  * @returns:    Returns a value back to asm caller
 347  *
 348  * @func is called from ASM entry code.
 349  *
 350  * This is a plain function which does no tracing, reconciling, etc.
 351  * The macro is written so it acts as function definition. Append the
 352  * body with a pair of curly brackets.
 353  *
 354  * raw interrupt handlers must not enable or disable interrupts, or
 355  * schedule, tracing and instrumentation (ftrace, lockdep, etc) would
 356  * not be advisable either, although may be possible in a pinch, the
 357  * trace will look odd at least.
 358  *
 359  * A raw handler may call one of the other interrupt handler functions
 360  * to be converted into that interrupt context without these restrictions.
 361  *
 362  * On PPC64, _RAW handlers may return with fast_interrupt_return.
 363  *
 364  * Specific handlers may have additional restrictions.
 365  */
 366 #define DEFINE_INTERRUPT_HANDLER_RAW(func)                              \
 367 static __always_inline long ____##func(struct pt_regs *regs);           \
 368                                                                         \
 369 interrupt_handler long func(struct pt_regs *regs)                       \
 370 {                                                                       \
 371         long ret;                                                       \
 372                                                                         \
 373         ret = ____##func (regs);                                        \
 374                                                                         \
 375         return ret;                                                     \
 376 }                                                                       \
 377 NOKPROBE_SYMBOL(func);                                                  \
 378                                                                         \
 379 static __always_inline long ____##func(struct pt_regs *regs)
 380
 381 /**
 382  * DECLARE_INTERRUPT_HANDLER - Declare synchronous interrupt handler function
 383  * @func:       Function name of the entry point
 384  */
 385 #define DECLARE_INTERRUPT_HANDLER(func)                                 \
 386         __visible void func(struct pt_regs *regs)
 387
 388 /**
 389  * DEFINE_INTERRUPT_HANDLER - Define synchronous interrupt handler function
 390  * @func:       Function name of the entry point
 391  *
 392  * @func is called from ASM entry code.
 393  *
 394  * The macro is written so it acts as function definition. Append the
 395  * body with a pair of curly brackets.
 396  */
 397 #define DEFINE_INTERRUPT_HANDLER(func)                                  \
 398 static __always_inline void ____##func(struct pt_regs *regs);           \
 399                                                                         \
 400 interrupt_handler void func(struct pt_regs *regs)                       \
 401 {                                                                       \
 402         struct interrupt_state state;                                   \
 403                                                                         \
 404         interrupt_enter_prepare(regs, &state);                          \
 405                                                                         \
 406         ____##func (regs);                                              \
 407                                                                         \
 408         interrupt_exit_prepare(regs, &state);                           \
 409 }                                                                       \
 410 NOKPROBE_SYMBOL(func);                                                  \
 411                                                                         \
 412 static __always_inline void ____##func(struct pt_regs *regs)
 413
 414 /**
 415  * DECLARE_INTERRUPT_HANDLER_RET - Declare synchronous interrupt handler function
 416  * @func:       Function name of the entry point
 417  * @returns:    Returns a value back to asm caller
 418  */
 419 #define DECLARE_INTERRUPT_HANDLER_RET(func)                             \
 420         __visible long func(struct pt_regs *regs)
 421
 422 /**
 423  * DEFINE_INTERRUPT_HANDLER_RET - Define synchronous interrupt handler function
 424  * @func:       Function name of the entry point
 425  * @returns:    Returns a value back to asm caller
 426  *
 427  * @func is called from ASM entry code.
 428  *
 429  * The macro is written so it acts as function definition. Append the
 430  * body with a pair of curly brackets.
 431  */
 432 #define DEFINE_INTERRUPT_HANDLER_RET(func)                              \
 433 static __always_inline long ____##func(struct pt_regs *regs);           \
 434                                                                         \
 435 interrupt_handler long func(struct pt_regs *regs)                       \
 436 {                                                                       \
 437         struct interrupt_state state;                                   \
 438         long ret;                                                       \
 439                                                                         \
 440         interrupt_enter_prepare(regs, &state);                          \
 441                                                                         \
 442         ret = ____##func (regs);                                        \
 443                                                                         \
 444         interrupt_exit_prepare(regs, &state);                           \
 445                                                                         \
 446         return ret;                                                     \
 447 }                                                                       \
 448 NOKPROBE_SYMBOL(func);                                                  \
 449                                                                         \
 450 static __always_inline long ____##func(struct pt_regs *regs)
 451
 452 /**
 453  * DECLARE_INTERRUPT_HANDLER_ASYNC - Declare asynchronous interrupt handler function
 454  * @func:       Function name of the entry point
 455  */
 456 #define DECLARE_INTERRUPT_HANDLER_ASYNC(func)                           \
 457         __visible void func(struct pt_regs *regs)
 458
 459 /**
 460  * DEFINE_INTERRUPT_HANDLER_ASYNC - Define asynchronous interrupt handler function
 461  * @func:       Function name of the entry point
 462  *
 463  * @func is called from ASM entry code.
 464  *
 465  * The macro is written so it acts as function definition. Append the
 466  * body with a pair of curly brackets.
 467  */
 468 #define DEFINE_INTERRUPT_HANDLER_ASYNC(func)                            \
 469 static __always_inline void ____##func(struct pt_regs *regs);           \
 470                                                                         \
 471 interrupt_handler void func(struct pt_regs *regs)                       \
 472 {                                                                       \
 473         struct interrupt_state state;                                   \
 474                                                                         \
 475         interrupt_async_enter_prepare(regs, &state);                    \
 476                                                                         \
 477         ____##func (regs);                                              \
 478                                                                         \
 479         interrupt_async_exit_prepare(regs, &state);                     \
 480 }                                                                       \
 481 NOKPROBE_SYMBOL(func);                                                  \
 482                                                                         \
 483 static __always_inline void ____##func(struct pt_regs *regs)
 484
 485 /**
 486  * DECLARE_INTERRUPT_HANDLER_NMI - Declare NMI interrupt handler function
 487  * @func:       Function name of the entry point
 488  * @returns:    Returns a value back to asm caller
 489  */
 490 #define DECLARE_INTERRUPT_HANDLER_NMI(func)                             \
 491         __visible long func(struct pt_regs *regs)
 492
 493 /**
 494  * DEFINE_INTERRUPT_HANDLER_NMI - Define NMI interrupt handler function
 495  * @func:       Function name of the entry point
 496  * @returns:    Returns a value back to asm caller
 497  *
 498  * @func is called from ASM entry code.
 499  *
 500  * The macro is written so it acts as function definition. Append the
 501  * body with a pair of curly brackets.
 502  */
 503 #define DEFINE_INTERRUPT_HANDLER_NMI(func)                              \
 504 static __always_inline long ____##func(struct pt_regs *regs);           \
 505                                                                         \
 506 interrupt_handler long func(struct pt_regs *regs)                       \
 507 {                                                                       \
 508         struct interrupt_nmi_state state;                               \
 509         long ret;                                                       \
 510                                                                         \
 511         interrupt_nmi_enter_prepare(regs, &state);                      \
 512                                                                         \
 513         ret = ____##func (regs);                                        \
 514                                                                         \
 515         interrupt_nmi_exit_prepare(regs, &state);                       \
 516                                                                         \
 517         return ret;                                                     \
 518 }                                                                       \
 519 NOKPROBE_SYMBOL(func);                                                  \
 520                                                                         \
 521 static __always_inline long ____##func(struct pt_regs *regs)
 522
 523
 524 /* Interrupt handlers */
 525 /* kernel/traps.c */
 526 DECLARE_INTERRUPT_HANDLER_NMI(system_reset_exception);
 527 #ifdef CONFIG_PPC_BOOK3S_64
 528 DECLARE_INTERRUPT_HANDLER_ASYNC(machine_check_exception);
 529 #else
 530 DECLARE_INTERRUPT_HANDLER_NMI(machine_check_exception);
 531 #endif
 532 DECLARE_INTERRUPT_HANDLER(SMIException);
 533 DECLARE_INTERRUPT_HANDLER(handle_hmi_exception);
 534 DECLARE_INTERRUPT_HANDLER(unknown_exception);
 535 DECLARE_INTERRUPT_HANDLER_ASYNC(unknown_async_exception);
 536 DECLARE_INTERRUPT_HANDLER_NMI(unknown_nmi_exception);
 537 DECLARE_INTERRUPT_HANDLER(instruction_breakpoint_exception);
 538 DECLARE_INTERRUPT_HANDLER(RunModeException);
 539 DECLARE_INTERRUPT_HANDLER(single_step_exception);
 540 DECLARE_INTERRUPT_HANDLER(program_check_exception);
 541 DECLARE_INTERRUPT_HANDLER(emulation_assist_interrupt);
 542 DECLARE_INTERRUPT_HANDLER(alignment_exception);
 543 DECLARE_INTERRUPT_HANDLER(StackOverflow);
 544 DECLARE_INTERRUPT_HANDLER(stack_overflow_exception);
 545 DECLARE_INTERRUPT_HANDLER(kernel_fp_unavailable_exception);
 546 DECLARE_INTERRUPT_HANDLER(altivec_unavailable_exception);
 547 DECLARE_INTERRUPT_HANDLER(vsx_unavailable_exception);
 548 DECLARE_INTERRUPT_HANDLER(facility_unavailable_exception);
 549 DECLARE_INTERRUPT_HANDLER(fp_unavailable_tm);
 550 DECLARE_INTERRUPT_HANDLER(altivec_unavailable_tm);
 551 DECLARE_INTERRUPT_HANDLER(vsx_unavailable_tm);
 552 DECLARE_INTERRUPT_HANDLER_NMI(performance_monitor_exception_nmi);
 553 DECLARE_INTERRUPT_HANDLER_ASYNC(performance_monitor_exception_async);
 554 DECLARE_INTERRUPT_HANDLER_RAW(performance_monitor_exception);
 555 DECLARE_INTERRUPT_HANDLER(DebugException);
 556 DECLARE_INTERRUPT_HANDLER(altivec_assist_exception);
 557 DECLARE_INTERRUPT_HANDLER(CacheLockingException);
 558 DECLARE_INTERRUPT_HANDLER(SPEFloatingPointException);
 559 DECLARE_INTERRUPT_HANDLER(SPEFloatingPointRoundException);
 560 DECLARE_INTERRUPT_HANDLER_NMI(WatchdogException);
 561 DECLARE_INTERRUPT_HANDLER(kernel_bad_stack);
 562
 563 /* slb.c */
 564 DECLARE_INTERRUPT_HANDLER_RAW(do_slb_fault);
 565 DECLARE_INTERRUPT_HANDLER(do_bad_slb_fault);
 566
 567 /* hash_utils.c */
 568 DECLARE_INTERRUPT_HANDLER_RAW(do_hash_fault);
 569
 570 /* fault.c */
 571 DECLARE_INTERRUPT_HANDLER(do_page_fault);
 572 DECLARE_INTERRUPT_HANDLER(do_bad_page_fault_segv);
 573
 574 /* process.c */
 575 DECLARE_INTERRUPT_HANDLER(do_break);
 576
 577 /* time.c */
 578 DECLARE_INTERRUPT_HANDLER_ASYNC(timer_interrupt);
 579
 580 /* mce.c */
 581 DECLARE_INTERRUPT_HANDLER_NMI(machine_check_early);
 582 DECLARE_INTERRUPT_HANDLER_NMI(hmi_exception_realmode);
 583
 584 DECLARE_INTERRUPT_HANDLER_ASYNC(TAUException);
 585
 586 /* irq.c */
 587 DECLARE_INTERRUPT_HANDLER_ASYNC(do_IRQ);
 588
 589 void __noreturn unrecoverable_exception(struct pt_regs *regs);
 590
 591 void replay_system_reset(void);
 592 void replay_soft_interrupts(void);
 593
 594 static inline void interrupt_cond_local_irq_enable(struct pt_regs *regs)
 595 {
 596         if (!arch_irq_disabled_regs(regs))
 597                 local_irq_enable();
 598 }
 599
 600 #endif /* __ASSEMBLY__ */
 601
 602 #endif /* _ASM_POWERPC_INTERRUPT_H */