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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | /* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _ASM_POWERPC_ASM_PROTOTYPES_H #define _ASM_POWERPC_ASM_PROTOTYPES_H /* * This file is for prototypes of C functions that are only called * from asm, and any associated variables. * * Copyright 2016, Daniel Axtens, IBM Corporation. */ #include <linux/threads.h> #include <asm/cacheflush.h> #include <asm/checksum.h> #include <linux/uaccess.h> #include <asm/epapr_hcalls.h> #include <asm/dcr.h> #include <asm/mmu_context.h> #include <asm/ultravisor-api.h> #include <uapi/asm/ucontext.h> /* SMP */ extern struct task_struct *current_set[NR_CPUS]; extern struct task_struct *secondary_current; void start_secondary(void *unused); /* kexec */ struct paca_struct; struct kimage; extern struct paca_struct kexec_paca; void kexec_copy_flush(struct kimage *image); /* pseries hcall tracing */ extern struct static_key hcall_tracepoint_key; void __trace_hcall_entry(unsigned long opcode, unsigned long *args); void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf); /* Ultravisor */ #if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM) long ucall_norets(unsigned long opcode, ...); #else static inline long ucall_norets(unsigned long opcode, ...) { return U_NOT_AVAILABLE; } #endif /* OPAL */ int64_t __opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3, int64_t a4, int64_t a5, int64_t a6, int64_t a7, int64_t opcode, uint64_t msr); /* VMX copying */ int enter_vmx_usercopy(void); int exit_vmx_usercopy(void); int enter_vmx_ops(void); void *exit_vmx_ops(void *dest); /* signals, syscalls and interrupts */ long sys_swapcontext(struct ucontext __user *old_ctx, struct ucontext __user *new_ctx, long ctx_size); #ifdef CONFIG_PPC32 long sys_debug_setcontext(struct ucontext __user *ctx, int ndbg, struct sig_dbg_op __user *dbg); int ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct __kernel_old_timeval __user *tvp); unsigned long __init early_init(unsigned long dt_ptr); void __init machine_init(u64 dt_ptr); #endif long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8, unsigned long r0, struct pt_regs *regs); notrace unsigned long syscall_exit_prepare(unsigned long r3, struct pt_regs *regs, long scv); notrace unsigned long interrupt_exit_user_prepare(struct pt_regs *regs); notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs); #ifdef CONFIG_PPC64 unsigned long syscall_exit_restart(unsigned long r3, struct pt_regs *regs); unsigned long interrupt_exit_user_restart(struct pt_regs *regs); unsigned long interrupt_exit_kernel_restart(struct pt_regs *regs); #endif long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low, u32 len_high, u32 len_low); long sys_switch_endian(void); /* prom_init (OpenFirmware) */ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long pp, unsigned long r6, unsigned long r7, unsigned long kbase); /* setup */ void __init early_setup(unsigned long dt_ptr); void early_setup_secondary(void); /* misc runtime */ extern u64 __bswapdi2(u64); extern s64 __lshrdi3(s64, int); extern s64 __ashldi3(s64, int); extern s64 __ashrdi3(s64, int); extern int __cmpdi2(s64, s64); extern int __ucmpdi2(u64, u64); /* tracing */ void _mcount(void); unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip, unsigned long sp); void pnv_power9_force_smt4_catch(void); void pnv_power9_force_smt4_release(void); /* Transaction memory related */ void tm_enable(void); void tm_disable(void); void tm_abort(uint8_t cause); struct kvm_vcpu; void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr); void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr); /* Patch sites */ extern s32 patch__call_flush_branch_caches1; extern s32 patch__call_flush_branch_caches2; extern s32 patch__call_flush_branch_caches3; extern s32 patch__flush_count_cache_return; extern s32 patch__flush_link_stack_return; extern s32 patch__call_kvm_flush_link_stack; extern s32 patch__call_kvm_flush_link_stack_p9; extern s32 patch__memset_nocache, patch__memcpy_nocache; extern long flush_branch_caches; extern long kvm_flush_link_stack; #ifdef CONFIG_PPC_TRANSACTIONAL_MEM void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv); void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv); #else static inline void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv) { } static inline void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv) { } #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ void kvmhv_save_host_pmu(void); void kvmhv_load_host_pmu(void); void kvmhv_save_guest_pmu(struct kvm_vcpu *vcpu, bool pmu_in_use); void kvmhv_load_guest_pmu(struct kvm_vcpu *vcpu); void kvmppc_p9_enter_guest(struct kvm_vcpu *vcpu); long kvmppc_h_set_dabr(struct kvm_vcpu *vcpu, unsigned long dabr); long kvmppc_h_set_xdabr(struct kvm_vcpu *vcpu, unsigned long dabr, unsigned long dabrx); #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */ |