1 #ifndef _ASM_POWERPC_ASM_PROTOTYPES_H
2 #define _ASM_POWERPC_ASM_PROTOTYPES_H
4 * This file is for prototypes of C functions that are only called
5 * from asm, and any associated variables.
7 * Copyright 2016, Daniel Axtens, IBM Corporation.
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.
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>
21 #include <asm/mmu_context.h>
23 #include <uapi/asm/ucontext.h>
26 extern struct thread_info *current_set[NR_CPUS];
27 extern struct thread_info *secondary_ti;
28 void start_secondary(void *unused);
33 extern struct paca_struct kexec_paca;
34 void kexec_copy_flush(struct kimage *image);
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, long retval, unsigned long *retbuf);
41 #ifdef CONFIG_JUMP_LABEL
42 extern struct static_key opal_tracepoint_key;
45 void __trace_opal_entry(unsigned long opcode, unsigned long *args);
46 void __trace_opal_exit(long opcode, unsigned long retval);
49 int enter_vmx_usercopy(void);
50 int exit_vmx_usercopy(void);
51 int enter_vmx_ops(void);
52 void *exit_vmx_ops(void *dest);
55 long machine_check_early(struct pt_regs *regs);
56 long hmi_exception_realmode(struct pt_regs *regs);
57 void SMIException(struct pt_regs *regs);
58 void handle_hmi_exception(struct pt_regs *regs);
59 void instruction_breakpoint_exception(struct pt_regs *regs);
60 void RunModeException(struct pt_regs *regs);
61 void single_step_exception(struct pt_regs *regs);
62 void program_check_exception(struct pt_regs *regs);
63 void alignment_exception(struct pt_regs *regs);
64 void StackOverflow(struct pt_regs *regs);
65 void kernel_fp_unavailable_exception(struct pt_regs *regs);
66 void altivec_unavailable_exception(struct pt_regs *regs);
67 void vsx_unavailable_exception(struct pt_regs *regs);
68 void fp_unavailable_tm(struct pt_regs *regs);
69 void altivec_unavailable_tm(struct pt_regs *regs);
70 void vsx_unavailable_tm(struct pt_regs *regs);
71 void facility_unavailable_exception(struct pt_regs *regs);
72 void TAUException(struct pt_regs *regs);
73 void altivec_assist_exception(struct pt_regs *regs);
74 void unrecoverable_exception(struct pt_regs *regs);
75 void kernel_bad_stack(struct pt_regs *regs);
76 void system_reset_exception(struct pt_regs *regs);
77 void machine_check_exception(struct pt_regs *regs);
78 void emulation_assist_interrupt(struct pt_regs *regs);
79 long do_slb_fault(struct pt_regs *regs, unsigned long ea);
80 void do_bad_slb_fault(struct pt_regs *regs, unsigned long ea, long err);
82 /* signals, syscalls and interrupts */
83 long sys_swapcontext(struct ucontext __user *old_ctx,
84 struct ucontext __user *new_ctx,
87 long sys_debug_setcontext(struct ucontext __user *ctx,
88 int ndbg, struct sig_dbg_op __user *dbg);
90 ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval __user *tvp);
91 unsigned long __init early_init(unsigned long dt_ptr);
92 void __init machine_init(u64 dt_ptr);
95 long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
96 u32 len_high, u32 len_low);
97 long sys_switch_endian(void);
98 notrace unsigned int __check_irq_replay(void);
99 void notrace restore_interrupts(void);
102 long do_syscall_trace_enter(struct pt_regs *regs);
103 void do_syscall_trace_leave(struct pt_regs *regs);
106 void restore_math(struct pt_regs *regs);
107 void restore_tm_state(struct pt_regs *regs);
109 /* prom_init (OpenFirmware) */
110 unsigned long __init prom_init(unsigned long r3, unsigned long r4,
112 unsigned long r6, unsigned long r7,
113 unsigned long kbase);
116 void __init early_setup(unsigned long dt_ptr);
117 void early_setup_secondary(void);
120 void accumulate_stolen_time(void);
123 extern u64 __bswapdi2(u64);
124 extern s64 __lshrdi3(s64, int);
125 extern s64 __ashldi3(s64, int);
126 extern s64 __ashrdi3(s64, int);
127 extern int __cmpdi2(s64, s64);
128 extern int __ucmpdi2(u64, u64);
132 unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
134 void pnv_power9_force_smt4_catch(void);
135 void pnv_power9_force_smt4_release(void);
137 /* Transaction memory related */
138 void tm_enable(void);
139 void tm_disable(void);
140 void tm_abort(uint8_t cause);
143 void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
144 void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
147 extern s32 patch__call_flush_count_cache;
148 extern s32 patch__flush_count_cache_return;
149 extern s32 patch__memset_nocache, patch__memcpy_nocache;
151 extern long flush_count_cache;
153 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
154 void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
155 void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
157 static inline void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
158 bool preserve_nv) { }
159 static inline void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
160 bool preserve_nv) { }
161 #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
163 void kvmhv_save_host_pmu(void);
164 void kvmhv_load_host_pmu(void);
165 void kvmhv_save_guest_pmu(struct kvm_vcpu *vcpu, bool pmu_in_use);
166 void kvmhv_load_guest_pmu(struct kvm_vcpu *vcpu);
168 int __kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu);
170 long kvmppc_h_set_dabr(struct kvm_vcpu *vcpu, unsigned long dabr);
171 long kvmppc_h_set_xdabr(struct kvm_vcpu *vcpu, unsigned long dabr,
172 unsigned long dabrx);
174 #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */