From nobody Fri Nov 14 19:46:59 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 1760084912986720.332141247621; 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 1v78TW-0007D9-V7; Fri, 10 Oct 2025 04:27:42 -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 1v78TU-0007Bi-HM for qemu-devel@nongnu.org; Fri, 10 Oct 2025 04:27:40 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v78TN-0004V3-Em for qemu-devel@nongnu.org; Fri, 10 Oct 2025 04:27:40 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8Axz79sw+hoEZsUAA--.42224S3; Fri, 10 Oct 2025 16:27:24 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowJBxzsFpw+hos0LYAA--.56940S10; 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 8/8] hw/loongarch/virt: Add property highmem-mmio-size with virt machine Date: Fri, 10 Oct 2025 16:27:20 +0800 Message-Id: <20251010082720.3943996-9-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--.56940S10 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_HELO_NONE=0.001, SPF_PASS=-0.001 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: 1760084919840158500 Content-Type: text/plain; charset="utf-8" The default high mmio size of GPEX PCIE host controller is 64G bytes on virt machine. If it does not meet requirements with some pass-throught HW devices in future, it can be adjust dynamically, here adds property highmem-mmio-size to set high mmio size. Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index a7299dd658..324f14c898 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -7,6 +7,7 @@ #include "qemu/osdep.h" #include "qemu/units.h" #include "qemu/datadir.h" +#include "qemu/cutils.h" #include "qapi/error.h" #include "exec/target_page.h" #include "hw/boards.h" @@ -107,6 +108,43 @@ static void virt_set_highmem_mmio(Object *obj, bool va= lue, Error **errp) lvms->highmem_mmio =3D value; } =20 +static void virt_get_highmem_mmio_size(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(obj); + uint64_t size =3D lvms->gpex.mmio64.size; + + visit_type_size(v, name, &size, errp); +} + +static void virt_set_highmem_mmio_size(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(obj); + uint64_t size; + + if (!visit_type_size(v, name, &size, errp)) { + return; + } + + if (!is_power_of_2(size)) { + error_setg(errp, "highmem-mmio-size is not a power of 2"); + return; + } + + if (size < DEFAULT_HIGH_PCIE_MMIO_SIZE) { + char *sz =3D size_to_str(DEFAULT_HIGH_PCIE_MMIO_SIZE); + error_setg(errp, "highmem-mmio-size cannot be set to a lower value= " + "than the default (%s)", sz); + g_free(sz); + return; + } + + lvms->gpex.mmio64.size =3D size; +} + static PFlashCFI01 *virt_flash_create1(LoongArchVirtMachineState *lvms, const char *name, const char *alias_prop_name) @@ -1461,6 +1499,13 @@ static void virt_class_init(ObjectClass *oc, const v= oid *data) object_class_property_set_description(oc, "highmem-mmio", "Set on/off to enable/disable hi= gh " "memory region for PCI MMIO"); + object_class_property_add(oc, "highmem-mmio-size", "size", + virt_get_highmem_mmio_size, + virt_set_highmem_mmio_size, + NULL, NULL); + object_class_property_set_description(oc, "highmem-mmio-size", + "Set the high memory region size= " + "for PCI MMIO"); } =20 static const TypeInfo virt_machine_types[] =3D { --=20 2.39.3