arch/powerpc/include/asm/asm-prototypes.h

   1 #ifndef _ASM_POWERPC_ASM_PROTOTYPES_H
   2 #define _ASM_POWERPC_ASM_PROTOTYPES_H
   3 /*
   4  * This file is for prototypes of C functions that are only called
   5  * from asm, and any associated variables.
   6  *
   7  * Copyright 2016, Daniel Axtens, IBM Corporation.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  */
  14
  15 #include <linux/threads.h>
  16 #include <asm/cacheflush.h>
  17 #include <asm/checksum.h>
  18 #include <linux/uaccess.h>
  19 #include <asm/epapr_hcalls.h>
  20 #include <asm/dcr.h>
  21 #include <asm/mmu_context.h>
  22
  23 #include <uapi/asm/ucontext.h>
  24
  25 /* SMP */
  26 extern struct thread_info *current_set[NR_CPUS];
  27 extern struct thread_info *secondary_ti;
  28 void start_secondary(void *unused);
  29
  30 /* kexec */
  31 struct paca_struct;
  32 struct kimage;
  33 extern struct paca_struct kexec_paca;
  34 void kexec_copy_flush(struct kimage *image);
  35
  36 /* pseries hcall tracing */
  37 extern struct static_key hcall_tracepoint_key;
  38 void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
  39 void __trace_hcall_exit(long opcode, unsigned long retval,
  40                         unsigned long *retbuf);
  41 /* OPAL tracing */
  42 #ifdef HAVE_JUMP_LABEL
  43 extern struct static_key opal_tracepoint_key;
  44 #endif
  45
  46 void __trace_opal_entry(unsigned long opcode, unsigned long *args);
  47 void __trace_opal_exit(long opcode, unsigned long retval);
  48
  49 /* VMX copying */
  50 int enter_vmx_usercopy(void);
  51 int exit_vmx_usercopy(void);
  52 int enter_vmx_copy(void);
  53 void * exit_vmx_copy(void *dest);
  54
  55 /* Traps */
  56 long machine_check_early(struct pt_regs *regs);
  57 long hmi_exception_realmode(struct pt_regs *regs);
  58 void SMIException(struct pt_regs *regs);
  59 void handle_hmi_exception(struct pt_regs *regs);
  60 void instruction_breakpoint_exception(struct pt_regs *regs);
  61 void RunModeException(struct pt_regs *regs);
  62 void single_step_exception(struct pt_regs *regs);
  63 void program_check_exception(struct pt_regs *regs);
  64 void alignment_exception(struct pt_regs *regs);
  65 void StackOverflow(struct pt_regs *regs);
  66 void nonrecoverable_exception(struct pt_regs *regs);
  67 void kernel_fp_unavailable_exception(struct pt_regs *regs);
  68 void altivec_unavailable_exception(struct pt_regs *regs);
  69 void vsx_unavailable_exception(struct pt_regs *regs);
  70 void fp_unavailable_tm(struct pt_regs *regs);
  71 void altivec_unavailable_tm(struct pt_regs *regs);
  72 void vsx_unavailable_tm(struct pt_regs *regs);
  73 void facility_unavailable_exception(struct pt_regs *regs);
  74 void TAUException(struct pt_regs *regs);
  75 void altivec_assist_exception(struct pt_regs *regs);
  76 void unrecoverable_exception(struct pt_regs *regs);
  77 void kernel_bad_stack(struct pt_regs *regs);
  78 void system_reset_exception(struct pt_regs *regs);
  79 void machine_check_exception(struct pt_regs *regs);
  80 void emulation_assist_interrupt(struct pt_regs *regs);
  81
  82 /* signals, syscalls and interrupts */
  83 #ifdef CONFIG_PPC64
  84 int sys_swapcontext(struct ucontext __user *old_ctx,
  85                     struct ucontext __user *new_ctx,
  86                     long ctx_size, long r6, long r7, long r8, struct pt_regs *regs);
  87 #else
  88 long sys_swapcontext(struct ucontext __user *old_ctx,
  89                     struct ucontext __user *new_ctx,
  90                     int ctx_size, int r6, int r7, int r8, struct pt_regs *regs);
  91 #endif
  92 long sys_switch_endian(void);
  93 notrace unsigned int __check_irq_replay(void);
  94 void notrace restore_interrupts(void);
  95
  96 /* ptrace */
  97 long do_syscall_trace_enter(struct pt_regs *regs);
  98 void do_syscall_trace_leave(struct pt_regs *regs);
  99
 100 /* process */
 101 void restore_math(struct pt_regs *regs);
 102 void restore_tm_state(struct pt_regs *regs);
 103
 104 /* prom_init (OpenFirmware) */
 105 unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 106                                unsigned long pp,
 107                                unsigned long r6, unsigned long r7,
 108                                unsigned long kbase);
 109
 110 /* setup */
 111 void __init early_setup(unsigned long dt_ptr);
 112 void early_setup_secondary(void);
 113
 114 /* time */
 115 void accumulate_stolen_time(void);
 116
 117 /* misc runtime */
 118 extern u64 __bswapdi2(u64);
 119 extern s64 __lshrdi3(s64, int);
 120 extern s64 __ashldi3(s64, int);
 121 extern s64 __ashrdi3(s64, int);
 122 extern int __cmpdi2(s64, s64);
 123 extern int __ucmpdi2(u64, u64);
 124
 125 /* tracing */
 126 void _mcount(void);
 127 unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
 128
 129 void pnv_power9_force_smt4_catch(void);
 130 void pnv_power9_force_smt4_release(void);
 131
 132 #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */