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 (!(regs->msr & MSR_EE) || is_implicit_soft_masked(regs)) {
 269                 /*
 270                  * Adjust regs->softe to be soft-masked if it had not been
 271                  * reconcied (e.g., interrupt entry with MSR[EE]=0 but softe
 272                  * not yet set disabled), or if it was in an implicit soft
 273                  * masked state. This makes arch_irq_disabled_regs(regs)
 274                  * behave as expected.
 275                  */
 276                 regs->softe = IRQS_ALL_DISABLED;
 277         }
 278
 279         /* Don't do any per-CPU operations until interrupt state is fixed */
 280
 281         if (nmi_disables_ftrace(regs)) {
 282                 state->ftrace_enabled = this_cpu_get_ftrace_enabled();
 283                 this_cpu_set_ftrace_enabled(0);
 284         }
 285 #endif
 286
 287         /*
 288          * Do not use nmi_enter() for pseries hash guest taking a real-mode
 289          * NMI because not everything it touches is within the RMA limit.
 290          */
 291         if (!IS_ENABLED(CONFIG_PPC_BOOK3S_64) ||
 292                         !firmware_has_feature(FW_FEATURE_LPAR) ||
 293                         radix_enabled() || (mfmsr() & MSR_DR))
 294                 nmi_enter();
 295 }
 296
 297 static inline void interrupt_nmi_exit_prepare(struct pt_regs *regs, struct interrupt_nmi_state *state)
 298 {
 299         if (!IS_ENABLED(CONFIG_PPC_BOOK3S_64) ||
 300                         !firmware_has_feature(FW_FEATURE_LPAR) ||
 301                         radix_enabled() || (mfmsr() & MSR_DR))
 302                 nmi_exit();
 303
 304         /*
 305          * nmi does not call nap_adjust_return because nmi should not create
 306          * new work to do (must use irq_work for that).
 307          */
 308
 309 #ifdef CONFIG_PPC64
 310 #ifdef CONFIG_PPC_BOOK3S
 311         if (arch_irq_disabled_regs(regs)) {
 312                 unsigned long rst = search_kernel_restart_table(regs->nip);
 313                 if (rst)
 314                         regs_set_return_ip(regs, rst);
 315         }
 316 #endif
 317
 318         if (nmi_disables_ftrace(regs))
 319                 this_cpu_set_ftrace_enabled(state->ftrace_enabled);
 320
 321         /* Check we didn't change the pending interrupt mask. */
 322         WARN_ON_ONCE((state->irq_happened | PACA_IRQ_HARD_DIS) != local_paca->irq_happened);
 323         regs->softe = state->softe;
 324         local_paca->irq_happened = state->irq_happened;
 325         local_paca->irq_soft_mask = state->irq_soft_mask;
 326 #endif
 327 }
 328
 329 /*
 330  * Don't use noinstr here like x86, but rather add NOKPROBE_SYMBOL to each
 331  * function definition. The reason for this is the noinstr section is placed
 332  * after the main text section, i.e., very far away from the interrupt entry
 333  * asm. That creates problems with fitting linker stubs when building large
 334  * kernels.
 335  */
 336 #define interrupt_handler __visible noinline notrace __no_kcsan __no_sanitize_address
 337
 338 /**
 339  * DECLARE_INTERRUPT_HANDLER_RAW - Declare raw interrupt handler function
 340  * @func:       Function name of the entry point
 341  * @returns:    Returns a value back to asm caller
 342  */
 343 #define DECLARE_INTERRUPT_HANDLER_RAW(func)                             \
 344         __visible long func(struct pt_regs *regs)
 345
 346 /**
 347  * DEFINE_INTERRUPT_HANDLER_RAW - Define raw interrupt handler function
 348  * @func:       Function name of the entry point
 349  * @returns:    Returns a value back to asm caller
 350  *
 351  * @func is called from ASM entry code.
 352  *
 353  * This is a plain function which does no tracing, reconciling, etc.
 354  * The macro is written so it acts as function definition. Append the
 355  * body with a pair of curly brackets.
 356  *
 357  * raw interrupt handlers must not enable or disable interrupts, or
 358  * schedule, tracing and instrumentation (ftrace, lockdep, etc) would
 359  * not be advisable either, although may be possible in a pinch, the
 360  * trace will look odd at least.
 361  *
 362  * A raw handler may call one of the other interrupt handler functions
 363  * to be converted into that interrupt context without these restrictions.
 364  *
 365  * On PPC64, _RAW handlers may return with fast_interrupt_return.
 366  *
 367  * Specific handlers may have additional restrictions.
 368  */
 369 #define DEFINE_INTERRUPT_HANDLER_RAW(func)                              \
 370 static __always_inline long ____##func(struct pt_regs *regs);           \
 371                                                                         \
 372 interrupt_handler long func(struct pt_regs *regs)                       \
 373 {                                                                       \
 374         long ret;                                                       \
 375                                                                         \
 376         ret = ____##func (regs);                                        \
 377                                                                         \
 378         return ret;                                                     \
 379 }                                                                       \
 380 NOKPROBE_SYMBOL(func);                                                  \
 381                                                                         \
 382 static __always_inline long ____##func(struct pt_regs *regs)
 383
 384 /**
 385  * DECLARE_INTERRUPT_HANDLER - Declare synchronous interrupt handler function
 386  * @func:       Function name of the entry point
 387  */
 388 #define DECLARE_INTERRUPT_HANDLER(func)                                 \
 389         __visible void func(struct pt_regs *regs)
 390
 391 /**
 392  * DEFINE_INTERRUPT_HANDLER - Define synchronous interrupt handler function
 393  * @func:       Function name of the entry point
 394  *
 395  * @func is called from ASM entry code.
 396  *
 397  * The macro is written so it acts as function definition. Append the
 398  * body with a pair of curly brackets.
 399  */
 400 #define DEFINE_INTERRUPT_HANDLER(func)                                  \
 401 static __always_inline void ____##func(struct pt_regs *regs);           \
 402                                                                         \
 403 interrupt_handler void func(struct pt_regs *regs)                       \
 404 {                                                                       \
 405         struct interrupt_state state;                                   \
 406                                                                         \
 407         interrupt_enter_prepare(regs, &state);                          \
 408                                                                         \
 409         ____##func (regs);                                              \
 410                                                                         \
 411         interrupt_exit_prepare(regs, &state);                           \
 412 }                                                                       \
 413 NOKPROBE_SYMBOL(func);                                                  \
 414                                                                         \
 415 static __always_inline void ____##func(struct pt_regs *regs)
 416
 417 /**
 418  * DECLARE_INTERRUPT_HANDLER_RET - Declare synchronous interrupt handler function
 419  * @func:       Function name of the entry point
 420  * @returns:    Returns a value back to asm caller
 421  */
 422 #define DECLARE_INTERRUPT_HANDLER_RET(func)                             \
 423         __visible long func(struct pt_regs *regs)
 424
 425 /**
 426  * DEFINE_INTERRUPT_HANDLER_RET - Define synchronous interrupt handler function
 427  * @func:       Function name of the entry point
 428  * @returns:    Returns a value back to asm caller
 429  *
 430  * @func is called from ASM entry code.
 431  *
 432  * The macro is written so it acts as function definition. Append the
 433  * body with a pair of curly brackets.
 434  */
 435 #define DEFINE_INTERRUPT_HANDLER_RET(func)                              \
 436 static __always_inline long ____##func(struct pt_regs *regs);           \
 437                                                                         \
 438 interrupt_handler long func(struct pt_regs *regs)                       \
 439 {                                                                       \
 440         struct interrupt_state state;                                   \
 441         long ret;                                                       \
 442                                                                         \
 443         interrupt_enter_prepare(regs, &state);                          \
 444                                                                         \
 445         ret = ____##func (regs);                                        \
 446                                                                         \
 447         interrupt_exit_prepare(regs, &state);                           \
 448                                                                         \
 449         return ret;                                                     \
 450 }                                                                       \
 451 NOKPROBE_SYMBOL(func);                                                  \
 452                                                                         \
 453 static __always_inline long ____##func(struct pt_regs *regs)
 454
 455 /**
 456  * DECLARE_INTERRUPT_HANDLER_ASYNC - Declare asynchronous interrupt handler function
 457  * @func:       Function name of the entry point
 458  */
 459 #define DECLARE_INTERRUPT_HANDLER_ASYNC(func)                           \
 460         __visible void func(struct pt_regs *regs)
 461
 462 /**
 463  * DEFINE_INTERRUPT_HANDLER_ASYNC - Define asynchronous interrupt handler function
 464  * @func:       Function name of the entry point
 465  *
 466  * @func is called from ASM entry code.
 467  *
 468  * The macro is written so it acts as function definition. Append the
 469  * body with a pair of curly brackets.
 470  */
 471 #define DEFINE_INTERRUPT_HANDLER_ASYNC(func)                            \
 472 static __always_inline void ____##func(struct pt_regs *regs);           \
 473                                                                         \
 474 interrupt_handler void func(struct pt_regs *regs)                       \
 475 {                                                                       \
 476         struct interrupt_state state;                                   \
 477                                                                         \
 478         interrupt_async_enter_prepare(regs, &state);                    \
 479                                                                         \
 480         ____##func (regs);                                              \
 481                                                                         \
 482         interrupt_async_exit_prepare(regs, &state);                     \
 483 }                                                                       \
 484 NOKPROBE_SYMBOL(func);                                                  \
 485                                                                         \
 486 static __always_inline void ____##func(struct pt_regs *regs)
 487
 488 /**
 489  * DECLARE_INTERRUPT_HANDLER_NMI - Declare NMI interrupt handler function
 490  * @func:       Function name of the entry point
 491  * @returns:    Returns a value back to asm caller
 492  */
 493 #define DECLARE_INTERRUPT_HANDLER_NMI(func)                             \
 494         __visible long func(struct pt_regs *regs)
 495
 496 /**
 497  * DEFINE_INTERRUPT_HANDLER_NMI - Define NMI interrupt handler function
 498  * @func:       Function name of the entry point
 499  * @returns:    Returns a value back to asm caller
 500  *
 501  * @func is called from ASM entry code.
 502  *
 503  * The macro is written so it acts as function definition. Append the
 504  * body with a pair of curly brackets.
 505  */
 506 #define DEFINE_INTERRUPT_HANDLER_NMI(func)                              \
 507 static __always_inline long ____##func(struct pt_regs *regs);           \
 508                                                                         \
 509 interrupt_handler long func(struct pt_regs *regs)                       \
 510 {                                                                       \
 511         struct interrupt_nmi_state state;                               \
 512         long ret;                                                       \
 513                                                                         \
 514         interrupt_nmi_enter_prepare(regs, &state);                      \
 515                                                                         \
 516         ret = ____##func (regs);                                        \
 517                                                                         \
 518         interrupt_nmi_exit_prepare(regs, &state);                       \
 519                                                                         \
 520         return ret;                                                     \
 521 }                                                                       \
 522 NOKPROBE_SYMBOL(func);                                                  \
 523                                                                         \
 524 static __always_inline long ____##func(struct pt_regs *regs)
 525
 526
 527 /* Interrupt handlers */
 528 /* kernel/traps.c */
 529 DECLARE_INTERRUPT_HANDLER_NMI(system_reset_exception);
 530 #ifdef CONFIG_PPC_BOOK3S_64
 531 DECLARE_INTERRUPT_HANDLER_ASYNC(machine_check_exception_async);
 532 #endif
 533 DECLARE_INTERRUPT_HANDLER_NMI(machine_check_exception);
 534 DECLARE_INTERRUPT_HANDLER(SMIException);
 535 DECLARE_INTERRUPT_HANDLER(handle_hmi_exception);
 536 DECLARE_INTERRUPT_HANDLER(unknown_exception);
 537 DECLARE_INTERRUPT_HANDLER_ASYNC(unknown_async_exception);
 538 DECLARE_INTERRUPT_HANDLER_NMI(unknown_nmi_exception);
 539 DECLARE_INTERRUPT_HANDLER(instruction_breakpoint_exception);
 540 DECLARE_INTERRUPT_HANDLER(RunModeException);
 541 DECLARE_INTERRUPT_HANDLER(single_step_exception);
 542 DECLARE_INTERRUPT_HANDLER(program_check_exception);
 543 DECLARE_INTERRUPT_HANDLER(emulation_assist_interrupt);
 544 DECLARE_INTERRUPT_HANDLER(alignment_exception);
 545 DECLARE_INTERRUPT_HANDLER(StackOverflow);
 546 DECLARE_INTERRUPT_HANDLER(stack_overflow_exception);
 547 DECLARE_INTERRUPT_HANDLER(kernel_fp_unavailable_exception);
 548 DECLARE_INTERRUPT_HANDLER(altivec_unavailable_exception);
 549 DECLARE_INTERRUPT_HANDLER(vsx_unavailable_exception);
 550 DECLARE_INTERRUPT_HANDLER(facility_unavailable_exception);
 551 DECLARE_INTERRUPT_HANDLER(fp_unavailable_tm);
 552 DECLARE_INTERRUPT_HANDLER(altivec_unavailable_tm);
 553 DECLARE_INTERRUPT_HANDLER(vsx_unavailable_tm);
 554 DECLARE_INTERRUPT_HANDLER_NMI(performance_monitor_exception_nmi);
 555 DECLARE_INTERRUPT_HANDLER_ASYNC(performance_monitor_exception_async);
 556 DECLARE_INTERRUPT_HANDLER_RAW(performance_monitor_exception);
 557 DECLARE_INTERRUPT_HANDLER(DebugException);
 558 DECLARE_INTERRUPT_HANDLER(altivec_assist_exception);
 559 DECLARE_INTERRUPT_HANDLER(CacheLockingException);
 560 DECLARE_INTERRUPT_HANDLER(SPEFloatingPointException);
 561 DECLARE_INTERRUPT_HANDLER(SPEFloatingPointRoundException);
 562 DECLARE_INTERRUPT_HANDLER_NMI(WatchdogException);
 563 DECLARE_INTERRUPT_HANDLER(kernel_bad_stack);
 564
 565 /* slb.c */
 566 DECLARE_INTERRUPT_HANDLER_RAW(do_slb_fault);
 567 DECLARE_INTERRUPT_HANDLER(do_bad_slb_fault);
 568
 569 /* hash_utils.c */
 570 DECLARE_INTERRUPT_HANDLER(do_hash_fault);
 571
 572 /* fault.c */
 573 DECLARE_INTERRUPT_HANDLER(do_page_fault);
 574 DECLARE_INTERRUPT_HANDLER(do_bad_page_fault_segv);
 575
 576 /* process.c */
 577 DECLARE_INTERRUPT_HANDLER(do_break);
 578
 579 /* time.c */
 580 DECLARE_INTERRUPT_HANDLER_ASYNC(timer_interrupt);
 581
 582 /* mce.c */
 583 DECLARE_INTERRUPT_HANDLER_NMI(machine_check_early);
 584 DECLARE_INTERRUPT_HANDLER_NMI(hmi_exception_realmode);
 585
 586 DECLARE_INTERRUPT_HANDLER_ASYNC(TAUException);
 587
 588 /* irq.c */
 589 DECLARE_INTERRUPT_HANDLER_ASYNC(do_IRQ);
 590
 591 void __noreturn unrecoverable_exception(struct pt_regs *regs);
 592
 593 void replay_system_reset(void);
 594 void replay_soft_interrupts(void);
 595
 596 static inline void interrupt_cond_local_irq_enable(struct pt_regs *regs)
 597 {
 598         if (!arch_irq_disabled_regs(regs))
 599                 local_irq_enable();
 600 }
 601
 602 #endif /* __ASSEMBLY__ */
 603
 604 #endif /* _ASM_POWERPC_INTERRUPT_H */