1fd7bacbcSMahesh Salgaonkar /* 2fd7bacbcSMahesh Salgaonkar * Hypervisor Maintenance Interrupt header file. 3fd7bacbcSMahesh Salgaonkar * 4fd7bacbcSMahesh Salgaonkar * This program is free software; you can redistribute it and/or modify 5fd7bacbcSMahesh Salgaonkar * it under the terms of the GNU General Public License as published by 6fd7bacbcSMahesh Salgaonkar * the Free Software Foundation; either version 2 of the License, or 7fd7bacbcSMahesh Salgaonkar * (at your option) any later version. 8fd7bacbcSMahesh Salgaonkar * 9fd7bacbcSMahesh Salgaonkar * This program is distributed in the hope that it will be useful, 10fd7bacbcSMahesh Salgaonkar * but WITHOUT ANY WARRANTY; without even the implied warranty of 11fd7bacbcSMahesh Salgaonkar * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12fd7bacbcSMahesh Salgaonkar * GNU General Public License for more details. 13fd7bacbcSMahesh Salgaonkar * 14fd7bacbcSMahesh Salgaonkar * You should have received a copy of the GNU General Public License 15fd7bacbcSMahesh Salgaonkar * along with this program. 16fd7bacbcSMahesh Salgaonkar * 17fd7bacbcSMahesh Salgaonkar * Copyright 2015 IBM Corporation 18fd7bacbcSMahesh Salgaonkar * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> 19fd7bacbcSMahesh Salgaonkar */ 20fd7bacbcSMahesh Salgaonkar 21fd7bacbcSMahesh Salgaonkar #ifndef __ASM_PPC64_HMI_H__ 22fd7bacbcSMahesh Salgaonkar #define __ASM_PPC64_HMI_H__ 23fd7bacbcSMahesh Salgaonkar 247c379526SPaolo Bonzini #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 25fd7bacbcSMahesh Salgaonkar 26fd7bacbcSMahesh Salgaonkar #define CORE_TB_RESYNC_REQ_BIT 63 27fd7bacbcSMahesh Salgaonkar #define MAX_SUBCORE_PER_CORE 4 28fd7bacbcSMahesh Salgaonkar 29fd7bacbcSMahesh Salgaonkar /* 30fd7bacbcSMahesh Salgaonkar * sibling_subcore_state structure is used to co-ordinate all threads 31fd7bacbcSMahesh Salgaonkar * during HMI to avoid TB corruption. This structure is allocated once 32fd7bacbcSMahesh Salgaonkar * per each core and shared by all threads on that core. 33fd7bacbcSMahesh Salgaonkar */ 34fd7bacbcSMahesh Salgaonkar struct sibling_subcore_state { 35fd7bacbcSMahesh Salgaonkar unsigned long flags; 36fd7bacbcSMahesh Salgaonkar u8 in_guest[MAX_SUBCORE_PER_CORE]; 37fd7bacbcSMahesh Salgaonkar }; 38fd7bacbcSMahesh Salgaonkar 39fd7bacbcSMahesh Salgaonkar extern void wait_for_subcore_guest_exit(void); 40fd7bacbcSMahesh Salgaonkar extern void wait_for_tb_resync(void); 41fd7bacbcSMahesh Salgaonkar #else 42fd7bacbcSMahesh Salgaonkar static inline void wait_for_subcore_guest_exit(void) { } 43fd7bacbcSMahesh Salgaonkar static inline void wait_for_tb_resync(void) { } 44fd7bacbcSMahesh Salgaonkar #endif 45d075745dSPaul Mackerras 46d075745dSPaul Mackerras struct pt_regs; 47d075745dSPaul Mackerras extern long hmi_handle_debugtrig(struct pt_regs *regs); 48d075745dSPaul Mackerras 49fd7bacbcSMahesh Salgaonkar #endif /* __ASM_PPC64_HMI_H__ */ 50