From patchwork Thu Sep 8 09:46:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaojuan Yang X-Patchwork-Id: 12969872 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8B93DECAAD5 for ; Thu, 8 Sep 2022 09:54:01 +0000 (UTC) Received: from localhost ([::1]:54028 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oWEES-0004sw-LS for qemu-devel@archiver.kernel.org; Thu, 08 Sep 2022 05:54:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58284) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWE7H-0005EC-Pv for qemu-devel@nongnu.org; Thu, 08 Sep 2022 05:46:37 -0400 Received: from mail.loongson.cn ([114.242.206.163]:43720 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oWE7B-0004z4-LF for qemu-devel@nongnu.org; Thu, 08 Sep 2022 05:46:34 -0400 Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxYOLwuRljGFYUAA--.17873S10; Thu, 08 Sep 2022 17:46:25 +0800 (CST) From: Xiaojuan Yang To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, gaosong@loongson.cn, maobibo@loongson.cn, imammedo@redhat.com Subject: [PATCH v1 8/9] hw/loongarch: Support memory hotplug Date: Thu, 8 Sep 2022 17:46:22 +0800 Message-Id: <20220908094623.73051-9-yangxiaojuan@loongson.cn> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220908094623.73051-1-yangxiaojuan@loongson.cn> References: <20220908094623.73051-1-yangxiaojuan@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxYOLwuRljGFYUAA--.17873S10 X-Coremail-Antispam: 1UD129KBjvJXoW3JryUCr1Dtr4fWFW5Gw4DArb_yoW3Zr4rpa 1UZF90vr4UWFnxZ3s3tr98WF1rAr4Ika4jqF1IyrWkKFnrWryDAryFk34Yga4UJ34kXF15 u3s8Ja12ga13JrJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: p1dqw5xldry3tdq6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=yangxiaojuan@loongson.cn; helo=loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add hotplug/unplug interface for memory device. Signed-off-by: Xiaojuan Yang --- hw/loongarch/Kconfig | 2 + hw/loongarch/acpi-build.c | 32 +++++++++--- hw/loongarch/virt.c | 105 +++++++++++++++++++++++++++++++++++++- 3 files changed, 132 insertions(+), 7 deletions(-) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index fef55c5638..17d15b6c90 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -4,6 +4,7 @@ config LOONGARCH_VIRT select PCI_EXPRESS_GENERIC_BRIDGE imply VIRTIO_VGA imply PCI_DEVICES + imply NVDIMM select ISA_BUS select SERIAL select SERIAL_ISA @@ -18,3 +19,4 @@ config LOONGARCH_VIRT select ACPI_PCI select ACPI_HW_REDUCED select FW_CFG_DMA + select DIMM diff --git a/hw/loongarch/acpi-build.c b/hw/loongarch/acpi-build.c index 95e30975a8..92ee62c11a 100644 --- a/hw/loongarch/acpi-build.c +++ b/hw/loongarch/acpi-build.c @@ -186,6 +186,12 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) build_srat_memory(table_data, VIRT_HIGHMEM_BASE, machine->ram_size - VIRT_LOWMEM_SIZE, 0, MEM_AFFINITY_ENABLED); + if (ms->device_memory) { + build_srat_memory(table_data, ms->device_memory->base, + memory_region_size(&ms->device_memory->mr), + 0, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); + } + acpi_table_end(linker, &table); } @@ -335,6 +341,25 @@ static void build_uart_device_aml(Aml *table) aml_append(table, scope); } +static void +build_la_ged_aml(Aml *dsdt, MachineState *machine) +{ + uint32_t event; + LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); + + build_ged_aml(dsdt, "\\_SB."GED_DEVICE, + HOTPLUG_HANDLER(lams->acpi_ged), + VIRT_SCI_IRQ, AML_SYSTEM_MEMORY, + VIRT_GED_EVT_ADDR); + event = object_property_get_uint(OBJECT(lams->acpi_ged), + "ged-event", &error_abort); + if (event & ACPI_GED_MEM_HOTPLUG_EVT) { + build_memory_hotplug_aml(dsdt, machine->ram_slots, "\\_SB", NULL, + AML_SYSTEM_MEMORY, + VIRT_GED_MEM_ADDR); + } +} + /* build DSDT */ static void build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) @@ -364,12 +389,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) build_gpex_pci0_int(dsdt); build_uart_device_aml(dsdt); - if (lams->acpi_ged) { - build_ged_aml(dsdt, "\\_SB."GED_DEVICE, - HOTPLUG_HANDLER(lams->acpi_ged), - VIRT_SCI_IRQ, AML_SYSTEM_MEMORY, - VIRT_GED_EVT_ADDR); - } + build_la_ged_aml(dsdt, machine); scope = aml_scope("\\_SB.PCI0"); /* Build PCI0._CRS */ diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 1e1dc699ef..a81db29384 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -40,6 +40,7 @@ #include "hw/core/sysbus-fdt.h" #include "hw/platform-bus.h" #include "hw/display/ramfb.h" +#include "hw/mem/pc-dimm.h" static void create_fdt(LoongArchMachineState *lams) { @@ -719,6 +720,35 @@ static void loongarch_init(MachineState *machine) machine->ram, offset, highram_size); memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem); memmap_add_entry(0x90000000, highram_size, 1); + + /* initialize device memory address space */ + if (machine->ram_size < machine->maxram_size) { + machine->device_memory = g_malloc0(sizeof(*machine->device_memory)); + ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; + + if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { + error_report("unsupported amount of memory slots: %"PRIu64, + machine->ram_slots); + exit(EXIT_FAILURE); + } + + if (QEMU_ALIGN_UP(machine->maxram_size, + TARGET_PAGE_SIZE) != machine->maxram_size) { + error_report("maximum memory size must by aligned to multiple of " + "%d bytes", TARGET_PAGE_SIZE); + exit(EXIT_FAILURE); + } + /* device memory base is the top of high memory address. */ + machine->device_memory->base = 0x90000000 + highram_size; + machine->device_memory->base = + ROUND_UP(machine->device_memory->base, 1 * GiB); + + memory_region_init(&machine->device_memory->mr, OBJECT(lams), + "device-memory", device_mem_size); + memory_region_add_subregion(address_space_mem, machine->device_memory->base, + &machine->device_memory->mr); + } + /* Add isa io region */ memory_region_init_alias(&lams->isa_io, NULL, "isa-io", get_system_io(), 0, VIRT_ISA_IO_SIZE); @@ -805,6 +835,73 @@ static void loongarch_machine_initfn(Object *obj) lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); } +static bool memhp_type_supported(DeviceState *dev) +{ + /* we only support pc dimm now */ + return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) && + !object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); +} + +static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, + Error **errp) +{ + pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); +} + +static void virt_machine_device_pre_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + if (memhp_type_supported(dev)) { + virt_mem_pre_plug(hotplug_dev, dev, errp); + } +} + +static void virt_mem_unplug_request(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); + + /* the acpi ged is always exist */ + hotplug_handler_unplug_request(HOTPLUG_HANDLER(lams->acpi_ged), dev, + errp); +} + +static void virt_machine_device_unplug_request(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + if (memhp_type_supported(dev)) { + virt_mem_unplug_request(hotplug_dev, dev, errp); + } +} + +static void virt_mem_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); + + hotplug_handler_unplug(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp); + pc_dimm_unplug(PC_DIMM(dev), MACHINE(lams)); + qdev_unrealize(dev); +} + +static void virt_machine_device_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + if (memhp_type_supported(dev)) { + virt_mem_unplug(hotplug_dev, dev, errp); + } +} + +static void virt_mem_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev); + + pc_dimm_plug(PC_DIMM(dev), MACHINE(lams)); + hotplug_handler_plug(HOTPLUG_HANDLER(lams->acpi_ged), + dev, &error_abort); +} + static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -816,6 +913,8 @@ static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev, platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev), SYS_BUS_DEVICE(dev)); } + } else if (memhp_type_supported(dev)) { + virt_mem_plug(hotplug_dev, dev, errp); } } @@ -824,7 +923,8 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, { MachineClass *mc = MACHINE_GET_CLASS(machine); - if (device_is_dynamic_sysbus(mc, dev)) { + if (device_is_dynamic_sysbus(mc, dev) || + memhp_type_supported(dev)) { return HOTPLUG_HANDLER(machine); } return NULL; @@ -848,6 +948,9 @@ static void loongarch_class_init(ObjectClass *oc, void *data) mc->no_cdrom = 1; mc->get_hotplug_handler = virt_machine_get_hotplug_handler; hc->plug = loongarch_machine_device_plug_cb; + hc->pre_plug = virt_machine_device_pre_plug; + hc->unplug_request = virt_machine_device_unplug_request; + hc->unplug = virt_machine_device_unplug; object_class_property_add(oc, "acpi", "OnOffAuto", loongarch_get_acpi, loongarch_set_acpi,