1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * s390x smp 4 * 5 * Copyright (c) 2019 IBM Corp 6 * 7 * Authors: 8 * Janosch Frank <frankja@linux.ibm.com> 9 */ 10 #ifndef _S390X_SMP_H_ 11 #define _S390X_SMP_H_ 12 13 #include <asm/arch_def.h> 14 15 struct cpu_status { 16 uint64_t fprs[16]; /* 0x0000 */ 17 uint64_t grs[16]; /* 0x0080 */ 18 struct psw psw; /* 0x0100 */ 19 uint8_t pad_0x0110[0x0118 - 0x0110]; /* 0x0110 */ 20 uint32_t prefix; /* 0x0118 */ 21 uint32_t fpc; /* 0x011c */ 22 uint8_t pad_0x0120[0x0124 - 0x0120]; /* 0x0120 */ 23 uint32_t todpr; /* 0x0124 */ 24 uint64_t cputm; /* 0x0128 */ 25 uint64_t ckc; /* 0x0130 */ 26 uint8_t pad_0x0138[0x0140 - 0x0138]; /* 0x0138 */ 27 uint32_t ars[16]; /* 0x0140 */ 28 uint64_t crs[16]; /* 0x0384 */ 29 }; 30 31 int smp_query_num_cpus(void); 32 struct cpu *smp_cpu_from_addr(uint16_t addr); 33 struct cpu *smp_cpu_from_idx(uint16_t idx); 34 uint16_t smp_cpu_addr(uint16_t idx); 35 bool smp_cpu_stopped(uint16_t idx); 36 bool smp_sense_running_status(uint16_t idx); 37 int smp_cpu_restart(uint16_t idx); 38 int smp_cpu_restart_nowait(uint16_t idx); 39 int smp_cpu_start(uint16_t idx, struct psw psw); 40 int smp_cpu_stop(uint16_t idx); 41 int smp_cpu_stop_nowait(uint16_t idx); 42 int smp_cpu_stop_store_status(uint16_t idx); 43 int smp_cpu_destroy(uint16_t idx); 44 int smp_cpu_setup(uint16_t idx, struct psw psw); 45 void smp_teardown(void); 46 void smp_setup(void); 47 int smp_sigp(uint16_t idx, uint8_t order, unsigned long parm, uint32_t *status); 48 struct lowcore *smp_get_lowcore(uint16_t idx); 49 50 #endif 51