1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * LoongArch IPI interrupt support 4 * 5 * Copyright (C) 2024 Loongson Technology Corporation Limited 6 */ 7 8 #include "qemu/osdep.h" 9 #include "hw/boards.h" 10 #include "hw/intc/loongarch_ipi.h" 11 #include "target/loongarch/cpu.h" 12 13 static AddressSpace *get_iocsr_as(CPUState *cpu) 14 { 15 return LOONGARCH_CPU(cpu)->env.address_space_iocsr; 16 } 17 18 static int archid_cmp(const void *a, const void *b) 19 { 20 CPUArchId *archid_a = (CPUArchId *)a; 21 CPUArchId *archid_b = (CPUArchId *)b; 22 23 return archid_a->arch_id - archid_b->arch_id; 24 } 25 26 static CPUArchId *find_cpu_by_archid(MachineState *ms, uint32_t id) 27 { 28 CPUArchId apic_id, *found_cpu; 29 30 apic_id.arch_id = id; 31 found_cpu = bsearch(&apic_id, ms->possible_cpus->cpus, 32 ms->possible_cpus->len, 33 sizeof(*ms->possible_cpus->cpus), 34 archid_cmp); 35 36 return found_cpu; 37 } 38 39 static CPUState *loongarch_cpu_by_arch_id(int64_t arch_id) 40 { 41 MachineState *machine = MACHINE(qdev_get_machine()); 42 CPUArchId *archid; 43 44 archid = find_cpu_by_archid(machine, arch_id); 45 if (archid) { 46 return CPU(archid->cpu); 47 } 48 49 return NULL; 50 } 51 52 static void loongarch_ipi_class_init(ObjectClass *klass, void *data) 53 { 54 LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_CLASS(klass); 55 56 licc->get_iocsr_as = get_iocsr_as; 57 licc->cpu_by_arch_id = loongarch_cpu_by_arch_id; 58 } 59 60 static const TypeInfo loongarch_ipi_types[] = { 61 { 62 .name = TYPE_LOONGARCH_IPI, 63 .parent = TYPE_LOONGSON_IPI_COMMON, 64 .class_init = loongarch_ipi_class_init, 65 } 66 }; 67 68 DEFINE_TYPES(loongarch_ipi_types) 69