162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Hypervisor Maintenance Interrupt header file. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright 2015 IBM Corporation 662306a36Sopenharmony_ci * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef __ASM_PPC64_HMI_H__ 1062306a36Sopenharmony_ci#define __ASM_PPC64_HMI_H__ 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#define CORE_TB_RESYNC_REQ_BIT 63 1562306a36Sopenharmony_ci#define MAX_SUBCORE_PER_CORE 4 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci/* 1862306a36Sopenharmony_ci * sibling_subcore_state structure is used to co-ordinate all threads 1962306a36Sopenharmony_ci * during HMI to avoid TB corruption. This structure is allocated once 2062306a36Sopenharmony_ci * per each core and shared by all threads on that core. 2162306a36Sopenharmony_ci */ 2262306a36Sopenharmony_cistruct sibling_subcore_state { 2362306a36Sopenharmony_ci unsigned long flags; 2462306a36Sopenharmony_ci u8 in_guest[MAX_SUBCORE_PER_CORE]; 2562306a36Sopenharmony_ci}; 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciextern void wait_for_subcore_guest_exit(void); 2862306a36Sopenharmony_ciextern void wait_for_tb_resync(void); 2962306a36Sopenharmony_ci#else 3062306a36Sopenharmony_cistatic inline void wait_for_subcore_guest_exit(void) { } 3162306a36Sopenharmony_cistatic inline void wait_for_tb_resync(void) { } 3262306a36Sopenharmony_ci#endif 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistruct pt_regs; 3562306a36Sopenharmony_ciextern long hmi_handle_debugtrig(struct pt_regs *regs); 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci#endif /* __ASM_PPC64_HMI_H__ */ 38