From nobody Fri Nov 14 19:47:00 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1760084912899452.13950666753215; Fri, 10 Oct 2025 01:28:32 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v78TU-0007BY-Dk; Fri, 10 Oct 2025 04:27:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v78TS-0007Az-HS for qemu-devel@nongnu.org; Fri, 10 Oct 2025 04:27:38 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v78TL-0004UK-As for qemu-devel@nongnu.org; Fri, 10 Oct 2025 04:27:38 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8Dx_79rw+hoDJsUAA--.43675S3; Fri, 10 Oct 2025 16:27:23 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowJBxzsFpw+hos0LYAA--.56940S8; Fri, 10 Oct 2025 16:27:23 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org Subject: [PATCH v2 6/8] hw/loongarch/virt: Add property highmem_mmio with virt machine Date: Fri, 10 Oct 2025 16:27:18 +0800 Message-Id: <20251010082720.3943996-7-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20251010082720.3943996-1-maobibo@loongson.cn> References: <20251010082720.3943996-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJBxzsFpw+hos0LYAA--.56940S8 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_PASS=-0.001, T_SPF_HELO_TEMPERROR=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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1760084925892154100 Content-Type: text/plain; charset="utf-8" On LoongArch Virt Machine, MMIO region with GPEX host bridge is 0x40000000 -- 0x7FFFFFFF. The total size is 1G bytes and it is enough for emulated virtio devices basically. However on some conditions such as hostmem is added with virtio-gpu device, the command line is -device virtio-gpu-gl,hostmem=3D4G. The PCIE MMIO region is not enough, 64-bit high MMIO region is required. Here add property highmem_mmio with virt machine, however it brings out incompatible issue. Here the default value is false. Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 21 +++++++++++++++++++++ include/hw/loongarch/virt.h | 1 + 2 files changed, 22 insertions(+) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index ad891a5972..264070e787 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -90,6 +90,20 @@ static void virt_set_veiointc(Object *obj, Visitor *v, c= onst char *name, visit_type_OnOffAuto(v, name, &lvms->veiointc, errp); } =20 +static bool virt_get_highmem_mmio(Object *obj, Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(obj); + + return lvms->highmem_mmio; +} + +static void virt_set_highmem_mmio(Object *obj, bool value, Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(obj); + + lvms->highmem_mmio =3D value; +} + static PFlashCFI01 *virt_flash_create1(LoongArchVirtMachineState *lvms, const char *name, const char *alias_prop_name) @@ -1381,6 +1395,13 @@ static void virt_class_init(ObjectClass *oc, const v= oid *data) "Override the default value of f= ield OEM Table ID " "in ACPI table header." "The string may be up to 8 bytes= in size"); + + object_class_property_add_bool(oc, "highmem-mmio", + virt_get_highmem_mmio, + virt_set_highmem_mmio); + object_class_property_set_description(oc, "highmem-mmio", + "Set on/off to enable/disable hi= gh " + "memory region for PCI MMIO"); } =20 static const TypeInfo virt_machine_types[] =3D { diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 01f20a135a..8a289a49fa 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -92,6 +92,7 @@ struct LoongArchVirtMachineState { DeviceState *dintc; hwaddr ram_end; struct GPEXConfig gpex; + bool highmem_mmio; }; =20 #define TYPE_LOONGARCH_VIRT_MACHINE MACHINE_TYPE_NAME("virt") --=20 2.39.3