LXR linux/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#include <asm/ultravisor-api.h>
  23
  24#include <uapi/asm/ucontext.h>
  25
  26/* SMP */
  27extern struct thread_info *current_set[NR_CPUS];
  28extern struct thread_info *secondary_ti;
  29void start_secondary(void *unused);
  30
  31/* kexec */
  32struct paca_struct;
  33struct kimage;
  34extern struct paca_struct kexec_paca;
  35void kexec_copy_flush(struct kimage *image);
  36
  37/* pseries hcall tracing */
  38extern struct static_key hcall_tracepoint_key;
  39void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
  40void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf);
  41
  42/* Ultravisor */
  43#if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM)
  44long ucall_norets(unsigned long opcode, ...);
  45#else
  46static inline long ucall_norets(unsigned long opcode, ...)
  47{
  48        return U_NOT_AVAILABLE;
  49}
  50#endif
  51
  52/* OPAL */
  53int64_t __opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3,
  54                    int64_t a4, int64_t a5, int64_t a6, int64_t a7,
  55                    int64_t opcode, uint64_t msr);
  56
  57/* VMX copying */
  58int enter_vmx_usercopy(void);
  59int exit_vmx_usercopy(void);
  60int enter_vmx_copy(void);
  61void * exit_vmx_copy(void *dest);
  62
  63/* Traps */
  64long machine_check_early(struct pt_regs *regs);
  65long hmi_exception_realmode(struct pt_regs *regs);
  66void SMIException(struct pt_regs *regs);
  67void handle_hmi_exception(struct pt_regs *regs);
  68void instruction_breakpoint_exception(struct pt_regs *regs);
  69void RunModeException(struct pt_regs *regs);
  70void single_step_exception(struct pt_regs *regs);
  71void program_check_exception(struct pt_regs *regs);
  72void alignment_exception(struct pt_regs *regs);
  73void slb_miss_bad_addr(struct pt_regs *regs);
  74void StackOverflow(struct pt_regs *regs);
  75void nonrecoverable_exception(struct pt_regs *regs);
  76void kernel_fp_unavailable_exception(struct pt_regs *regs);
  77void altivec_unavailable_exception(struct pt_regs *regs);
  78void vsx_unavailable_exception(struct pt_regs *regs);
  79void fp_unavailable_tm(struct pt_regs *regs);
  80void altivec_unavailable_tm(struct pt_regs *regs);
  81void vsx_unavailable_tm(struct pt_regs *regs);
  82void facility_unavailable_exception(struct pt_regs *regs);
  83void TAUException(struct pt_regs *regs);
  84void altivec_assist_exception(struct pt_regs *regs);
  85void unrecoverable_exception(struct pt_regs *regs);
  86void kernel_bad_stack(struct pt_regs *regs);
  87void system_reset_exception(struct pt_regs *regs);
  88void machine_check_exception(struct pt_regs *regs);
  89void emulation_assist_interrupt(struct pt_regs *regs);
  90
  91/* signals, syscalls and interrupts */
  92long sys_swapcontext(struct ucontext __user *old_ctx,
  93                    struct ucontext __user *new_ctx,
  94                    long ctx_size);
  95#ifdef CONFIG_PPC32
  96long sys_debug_setcontext(struct ucontext __user *ctx,
  97                          int ndbg, struct sig_dbg_op __user *dbg);
  98int
  99ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval __user *tvp);
 100unsigned long __init early_init(unsigned long dt_ptr);
 101void __init machine_init(u64 dt_ptr);
 102#endif
 103
 104long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
 105                      u32 len_high, u32 len_low);
 106long sys_switch_endian(void);
 107notrace unsigned int __check_irq_replay(void);
 108void notrace restore_interrupts(void);
 109
 110/* ptrace */
 111long do_syscall_trace_enter(struct pt_regs *regs);
 112void do_syscall_trace_leave(struct pt_regs *regs);
 113
 114/* process */
 115void restore_math(struct pt_regs *regs);
 116void restore_tm_state(struct pt_regs *regs);
 117
 118/* prom_init (OpenFirmware) */
 119unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 120                               unsigned long pp,
 121                               unsigned long r6, unsigned long r7,
 122                               unsigned long kbase);
 123
 124/* setup */
 125void __init early_setup(unsigned long dt_ptr);
 126void early_setup_secondary(void);
 127
 128/* time */
 129void accumulate_stolen_time(void);
 130
 131/* misc runtime */
 132extern u64 __bswapdi2(u64);
 133extern s64 __lshrdi3(s64, int);
 134extern s64 __ashldi3(s64, int);
 135extern s64 __ashrdi3(s64, int);
 136extern int __cmpdi2(s64, s64);
 137extern int __ucmpdi2(u64, u64);
 138
 139/* tracing */
 140void _mcount(void);
 141unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
 142
 143void pnv_power9_force_smt4_catch(void);
 144void pnv_power9_force_smt4_release(void);
 145
 146/* Transaction memory related */
 147void tm_enable(void);
 148void tm_disable(void);
 149void tm_abort(uint8_t cause);
 150
 151struct kvm_vcpu;
 152void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
 153void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
 154
 155#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
 156void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
 157void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
 158#else
 159static inline void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
 160                                     bool preserve_nv) { }
 161static inline void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
 162                                        bool preserve_nv) { }
 163#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
 164
 165void kvmhv_save_host_pmu(void);
 166void kvmhv_load_host_pmu(void);
 167void kvmhv_save_guest_pmu(struct kvm_vcpu *vcpu, bool pmu_in_use);
 168void kvmhv_load_guest_pmu(struct kvm_vcpu *vcpu);
 169
 170int __kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu);
 171
 172long kvmppc_h_set_dabr(struct kvm_vcpu *vcpu, unsigned long dabr);
 173long kvmppc_h_set_xdabr(struct kvm_vcpu *vcpu, unsigned long dabr,
 174                        unsigned long dabrx);
 175
 176/* Patch sites */
 177extern s32 patch__call_flush_branch_caches1;
 178extern s32 patch__call_flush_branch_caches2;
 179extern s32 patch__call_flush_branch_caches3;
 180extern s32 patch__flush_count_cache_return;
 181extern s32 patch__flush_link_stack_return;
 182extern s32 patch__call_kvm_flush_link_stack;
 183extern s32 patch__memset_nocache, patch__memcpy_nocache;
 184
 185extern long flush_branch_caches;
 186extern long kvm_flush_link_stack;
 187
 188#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */
 189