| 1 | /* |
| 2 | * QEMU IGVM interface |
| 3 | * |
| 4 | * Copyright (C) 2023-2024 SUSE |
| 5 | * |
| 6 | * Authors: |
| 7 | * Roy Hopkins <roy.hopkins@randomman.co.uk> |
| 8 | * |
| 9 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 10 | */ |
| 11 | |
| 12 | #include "qemu/osdep.h" |
| 13 | |
| 14 | #include "system/igvm.h" |
| 15 | #include "system/igvm-cfg.h" |
| 16 | #include "system/igvm-internal.h" |
| 17 | #include "system/reset.h" |
| 18 | #include "qom/object_interfaces.h" |
| 19 | #include "hw/core/qdev.h" |
| 20 | #include "hw/core/boards.h" |
| 21 | |
| 22 | #include "trace.h" |
| 23 | |
| 24 | static char *get_igvm(Object *obj, Error **errp) |
| 25 | { |
| 26 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 27 | return g_strdup(igvm->filename); |
| 28 | } |
| 29 | |
| 30 | static void set_igvm(Object *obj, const char *value, Error **errp) |
| 31 | { |
| 32 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 33 | g_free(igvm->filename); |
| 34 | igvm->filename = g_strdup(value); |
| 35 | } |
| 36 | |
| 37 | static ResettableState *igvm_reset_state(Object *obj) |
| 38 | { |
| 39 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 40 | return &igvm->reset_state; |
| 41 | } |
| 42 | |
| 43 | static void igvm_reset_enter(Object *obj, ResetType type) |
| 44 | { |
| 45 | trace_igvm_reset_enter(type); |
| 46 | } |
| 47 | |
| 48 | static void igvm_reset_hold(Object *obj, ResetType type) |
| 49 | { |
| 50 | MachineState *ms = MACHINE(qdev_get_machine()); |
| 51 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 52 | |
| 53 | trace_igvm_reset_hold(type); |
| 54 | |
| 55 | /* cleanup existing memory regions first */ |
| 56 | qigvm_cleanup_memory(igvm); |
| 57 | qigvm_process_file(igvm, ms, false, &error_fatal); |
| 58 | } |
| 59 | |
| 60 | static void igvm_reset_exit(Object *obj, ResetType type) |
| 61 | { |
| 62 | trace_igvm_reset_exit(type); |
| 63 | } |
| 64 | |
| 65 | static void igvm_complete(UserCreatable *uc, Error **errp) |
| 66 | { |
| 67 | IgvmCfg *igvm = IGVM_CFG(uc); |
| 68 | |
| 69 | igvm->file = qigvm_file_init(igvm->filename, errp); |
| 70 | QTAILQ_INIT(&igvm->memory_regions); |
| 71 | } |
| 72 | |
| 73 | OBJECT_DEFINE_TYPE_WITH_INTERFACES(IgvmCfg, igvm_cfg, IGVM_CFG, OBJECT, |
| 74 | { TYPE_USER_CREATABLE }, |
| 75 | { TYPE_RESETTABLE_INTERFACE }, |
| 76 | { NULL }) |
| 77 | |
| 78 | static void igvm_cfg_class_init(ObjectClass *oc, const void *data) |
| 79 | { |
| 80 | IgvmCfgClass *igvmc = IGVM_CFG_CLASS(oc); |
| 81 | ResettableClass *rc = RESETTABLE_CLASS(oc); |
| 82 | UserCreatableClass *uc = USER_CREATABLE_CLASS(oc); |
| 83 | |
| 84 | object_class_property_add_str(oc, "file", get_igvm, set_igvm); |
| 85 | object_class_property_set_description(oc, "file", |
| 86 | "Set the IGVM filename to use"); |
| 87 | |
| 88 | igvmc->process = qigvm_process_file; |
| 89 | |
| 90 | rc->get_state = igvm_reset_state; |
| 91 | rc->phases.enter = igvm_reset_enter; |
| 92 | rc->phases.hold = igvm_reset_hold; |
| 93 | rc->phases.exit = igvm_reset_exit; |
| 94 | |
| 95 | uc->complete = igvm_complete; |
| 96 | } |
| 97 | |
| 98 | static void igvm_cfg_init(Object *obj) |
| 99 | { |
| 100 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 101 | |
| 102 | igvm->file = -1; |
| 103 | qemu_register_resettable(obj); |
| 104 | } |
| 105 | |
| 106 | static void igvm_cfg_finalize(Object *obj) |
| 107 | { |
| 108 | IgvmCfg *igvm = IGVM_CFG(obj); |
| 109 | |
| 110 | qemu_unregister_resettable(obj); |
| 111 | if (igvm->file >= 0) { |
| 112 | igvm_free(igvm->file); |
| 113 | } |
| 114 | g_free(igvm->filename); |
| 115 | } |