/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _ASM_POWERPC_ASM_PROTOTYPES_H
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#define _ASM_POWERPC_ASM_PROTOTYPES_H
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/*
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* This file is for prototypes of C functions that are only called
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* from asm, and any associated variables.
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*
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* Copyright 2016, Daniel Axtens, IBM Corporation.
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*/
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#include <linux/threads.h>
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#include <asm/cacheflush.h>
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#include <asm/checksum.h>
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#include <linux/uaccess.h>
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#include <asm/epapr_hcalls.h>
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#include <asm/dcr.h>
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#include <asm/mmu_context.h>
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#include <asm/ultravisor-api.h>
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#include <uapi/asm/ucontext.h>
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/* SMP */
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extern struct task_struct *current_set[NR_CPUS];
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extern struct task_struct *secondary_current;
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void start_secondary(void *unused);
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/* kexec */
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struct paca_struct;
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struct kimage;
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extern struct paca_struct kexec_paca;
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void kexec_copy_flush(struct kimage *image);
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/* pseries hcall tracing */
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extern struct static_key hcall_tracepoint_key;
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void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
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void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf);
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/* Ultravisor */
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#if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM)
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long ucall_norets(unsigned long opcode, ...);
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#else
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static inline long ucall_norets(unsigned long opcode, ...)
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{
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return U_NOT_AVAILABLE;
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}
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#endif
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/* OPAL */
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int64_t __opal_call(int64_t a0, int64_t a1, int64_t a2, int64_t a3,
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int64_t a4, int64_t a5, int64_t a6, int64_t a7,
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int64_t opcode, uint64_t msr);
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/* VMX copying */
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int enter_vmx_usercopy(void);
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int exit_vmx_usercopy(void);
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int enter_vmx_ops(void);
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void *exit_vmx_ops(void *dest);
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/* Traps */
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long machine_check_early(struct pt_regs *regs);
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long hmi_exception_realmode(struct pt_regs *regs);
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void SMIException(struct pt_regs *regs);
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void handle_hmi_exception(struct pt_regs *regs);
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void instruction_breakpoint_exception(struct pt_regs *regs);
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void RunModeException(struct pt_regs *regs);
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void single_step_exception(struct pt_regs *regs);
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void program_check_exception(struct pt_regs *regs);
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void alignment_exception(struct pt_regs *regs);
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void StackOverflow(struct pt_regs *regs);
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void stack_overflow_exception(struct pt_regs *regs);
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void kernel_fp_unavailable_exception(struct pt_regs *regs);
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void altivec_unavailable_exception(struct pt_regs *regs);
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void vsx_unavailable_exception(struct pt_regs *regs);
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void fp_unavailable_tm(struct pt_regs *regs);
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void altivec_unavailable_tm(struct pt_regs *regs);
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void vsx_unavailable_tm(struct pt_regs *regs);
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void facility_unavailable_exception(struct pt_regs *regs);
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void TAUException(struct pt_regs *regs);
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void altivec_assist_exception(struct pt_regs *regs);
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void unrecoverable_exception(struct pt_regs *regs);
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void kernel_bad_stack(struct pt_regs *regs);
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void system_reset_exception(struct pt_regs *regs);
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void machine_check_exception(struct pt_regs *regs);
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void emulation_assist_interrupt(struct pt_regs *regs);
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long do_slb_fault(struct pt_regs *regs, unsigned long ea);
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void do_bad_slb_fault(struct pt_regs *regs, unsigned long ea, long err);
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/* signals, syscalls and interrupts */
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long sys_swapcontext(struct ucontext __user *old_ctx,
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struct ucontext __user *new_ctx,
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long ctx_size);
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#ifdef CONFIG_PPC32
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long sys_debug_setcontext(struct ucontext __user *ctx,
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int ndbg, struct sig_dbg_op __user *dbg);
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int
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ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
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struct __kernel_old_timeval __user *tvp);
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unsigned long __init early_init(unsigned long dt_ptr);
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void __init machine_init(u64 dt_ptr);
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#endif
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long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8, unsigned long r0, struct pt_regs *regs);
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notrace unsigned long syscall_exit_prepare(unsigned long r3, struct pt_regs *regs, long scv);
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notrace unsigned long interrupt_exit_user_prepare(struct pt_regs *regs, unsigned long msr);
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notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs, unsigned long msr);
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long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
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u32 len_high, u32 len_low);
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long sys_switch_endian(void);
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notrace unsigned int __check_irq_replay(void);
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void notrace restore_interrupts(void);
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/* prom_init (OpenFirmware) */
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unsigned long __init prom_init(unsigned long r3, unsigned long r4,
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unsigned long pp,
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unsigned long r6, unsigned long r7,
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unsigned long kbase);
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/* setup */
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void __init early_setup(unsigned long dt_ptr);
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void early_setup_secondary(void);
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/* misc runtime */
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extern u64 __bswapdi2(u64);
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extern s64 __lshrdi3(s64, int);
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extern s64 __ashldi3(s64, int);
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extern s64 __ashrdi3(s64, int);
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extern int __cmpdi2(s64, s64);
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extern int __ucmpdi2(u64, u64);
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/* tracing */
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void _mcount(void);
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unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip,
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unsigned long sp);
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void pnv_power9_force_smt4_catch(void);
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void pnv_power9_force_smt4_release(void);
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/* Transaction memory related */
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void tm_enable(void);
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void tm_disable(void);
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void tm_abort(uint8_t cause);
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struct kvm_vcpu;
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void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
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void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr);
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/* Patch sites */
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extern s32 patch__call_flush_branch_caches1;
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extern s32 patch__call_flush_branch_caches2;
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extern s32 patch__call_flush_branch_caches3;
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extern s32 patch__flush_count_cache_return;
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extern s32 patch__flush_link_stack_return;
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extern s32 patch__call_kvm_flush_link_stack;
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extern s32 patch__memset_nocache, patch__memcpy_nocache;
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extern long flush_branch_caches;
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extern long kvm_flush_link_stack;
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#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
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void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
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void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr, bool preserve_nv);
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#else
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static inline void kvmppc_save_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
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bool preserve_nv) { }
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static inline void kvmppc_restore_tm_hv(struct kvm_vcpu *vcpu, u64 msr,
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bool preserve_nv) { }
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#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
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void kvmhv_save_host_pmu(void);
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void kvmhv_load_host_pmu(void);
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void kvmhv_save_guest_pmu(struct kvm_vcpu *vcpu, bool pmu_in_use);
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void kvmhv_load_guest_pmu(struct kvm_vcpu *vcpu);
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int __kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu);
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long kvmppc_h_set_dabr(struct kvm_vcpu *vcpu, unsigned long dabr);
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long kvmppc_h_set_xdabr(struct kvm_vcpu *vcpu, unsigned long dabr,
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unsigned long dabrx);
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#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */
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