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| author | Bibo Mao <maobibo@loongson.cn> | 2025-03-07 09:34:41 +0800 |
|---|---|---|
| committer | Bibo Mao <maobibo@loongson.cn> | 2025-05-06 09:17:32 +0800 |
| commit | 36ad84ecb26d6a28c78d079dc51063d972600592 (patch) | |
| tree | c4bfe330d6522741be4b4c0c4947c0e4a1331553 | |
| parent | 5134cf9b5d3aee4475fe7e1c1c11b093731073cf (diff) | |
| download | qemu-36ad84ecb26d6a28c78d079dc51063d972600592.zip qemu-36ad84ecb26d6a28c78d079dc51063d972600592.tar.gz qemu-36ad84ecb26d6a28c78d079dc51063d972600592.tar.bz2 | |
hw/intc/loongarch_ipi: Add reset support
Add reset support with ipi object, register reset callback and clear
internal registers when virt machine resets.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
| -rw-r--r-- | hw/intc/loongarch_ipi.c | 29 | ||||
| -rw-r--r-- | include/hw/intc/loongarch_ipi.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c index 2f8bb57..74372a2 100644 --- a/hw/intc/loongarch_ipi.c +++ b/hw/intc/loongarch_ipi.c @@ -93,6 +93,32 @@ static void loongarch_ipi_realize(DeviceState *dev, Error **errp) } } +static void loongarch_ipi_reset_hold(Object *obj, ResetType type) +{ + int i; + LoongarchIPIClass *lic = LOONGARCH_IPI_GET_CLASS(obj); + LoongsonIPICommonState *lics = LOONGSON_IPI_COMMON(obj); + IPICore *core; + + if (lic->parent_phases.hold) { + lic->parent_phases.hold(obj, type); + } + + for (i = 0; i < lics->num_cpu; i++) { + core = lics->cpu + i; + /* IPI with targeted CPU available however not present */ + if (!core->cpu) { + continue; + } + + core->status = 0; + core->en = 0; + core->set = 0; + core->clear = 0; + memset(core->buf, 0, sizeof(core->buf)); + } +} + static void loongarch_ipi_cpu_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -145,10 +171,13 @@ static void loongarch_ipi_class_init(ObjectClass *klass, const void *data) LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_CLASS(klass); HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); LoongarchIPIClass *lic = LOONGARCH_IPI_CLASS(klass); + ResettableClass *rc = RESETTABLE_CLASS(klass); DeviceClass *dc = DEVICE_CLASS(klass); device_class_set_parent_realize(dc, loongarch_ipi_realize, &lic->parent_realize); + resettable_class_set_parent_phases(rc, NULL, loongarch_ipi_reset_hold, + NULL, &lic->parent_phases); licc->get_iocsr_as = get_iocsr_as; licc->cpu_by_arch_id = loongarch_cpu_by_arch_id; hc->plug = loongarch_ipi_cpu_plug; diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h index 923bf21..a7c6bf8 100644 --- a/include/hw/intc/loongarch_ipi.h +++ b/include/hw/intc/loongarch_ipi.h @@ -21,6 +21,7 @@ struct LoongarchIPIState { struct LoongarchIPIClass { LoongsonIPICommonClass parent_class; DeviceRealize parent_realize; + ResettablePhases parent_phases; }; #endif |