From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by 2002:a17:504:5a03:b0:1be9:327d:8ee3 with SMTP id iw3csp110010njb; Thu, 30 Jan 2025 08:30:23 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCUs9oekN7WS68b3HmJeMK5i+hW0HrhrC02rzJB07vj2McrhmaMc1lGiVxr+pBavi0tggQ7Xd1EIB+1+6A==@linaro.org X-Google-Smtp-Source: AGHT+IFiNsVg9UZP4bSC1LgEqTN1rvxAQC5G/yP7m3Iebyj977Ks84Ro2BfC1b9XfjNN7Yi51eFZ X-Received: by 2002:a05:622a:285:b0:460:8f80:909a with SMTP id d75a77b69052e-46fd0b8006amr141052461cf.32.1738254623284; Thu, 30 Jan 2025 08:30:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1738254623; cv=none; d=google.com; s=arc-20240605; b=HGHHmYJCo1kpId9h2Y3g6z5/huZYAMmTCjUizJtZyS6EMbnBcwUrHRWVRfDBl0OlHh UExw5F+xK8FZgf5qL6ix2IjBUC7KnLTqxe/Pr7raasnj/AqJTLHJl9pJdLHNUgaxhOzT MoEPxbQ49Ogz5Iwcn6JkYM6506487vgiM0qODm4mN4p1sS3Iori3+NKpTzONIoP63CmH gnD/KmWzwCqH/L6tHYnsh7ivS8/ytcxmS3YJ+4vijYLVEyn+CqFxApr7kvT9Jzn1uv7e oyROU+JhjRFxC5TJDiNKyTHgIgI6j46WiKCNa2l3qOflPlFhj07r0YgVoCl+f645V8mI jb2w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:reply-to:list-subscribe:list-help:list-post :list-archive:list-unsubscribe:list-id:precedence:user-agent :in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:dkim-signature; bh=wWPBwLy6R6/ATvy6h9wcQwkuNb53sEBCgzAyUoSibp0=; fh=Zb2kcfsRNwOyZCFsdnJ9ji6Ko91sfAa5DXFIGHnC+qw=; b=THvBypOe5E9d3z5Vyyin8fS01+TRQCKV2sgPNeLwFFZYErF6Z/nzyqxNCyuGvT6qnq RTGM31Z0Tf8rO1G2vyoGOVRHrp0fLKkJ1DOMBAlohKox0+F4AQpakF1wNnOHk7bxopeI uFdnqIRuXYxhbrd+dudvgDi1+XVs22uL3pOgIeddoxAX2o9lCDUT+gNdjLvOZ28sWPx/ P6VbJTmDrqKfHkpH/4/wX5gWGr830kHAboopJVD7VdNGhWRs/w4yKSX6g2qr69PDA9HO vETnClZaIRYi9PzpAJb/7N1R7UW6ujY9wVWwnHRIPXPhsw7S5jlPPukjvDbXF1mj+QMY 88lQ==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=O0tvGjiu; spf=pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id d75a77b69052e-46fdf1b9ecbsi19401291cf.247.2025.01.30.08.30.23 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 30 Jan 2025 08:30:23 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=O0tvGjiu; spf=pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tdXQe-00015V-BY; Thu, 30 Jan 2025 11:30:08 -0500 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 1tdXQZ-00012M-E0 for qemu-devel@nongnu.org; Thu, 30 Jan 2025 11:30:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tdXQU-0003aX-Vn for qemu-devel@nongnu.org; Thu, 30 Jan 2025 11:30:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1738254597; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=wWPBwLy6R6/ATvy6h9wcQwkuNb53sEBCgzAyUoSibp0=; b=O0tvGjiuv6+X9P+gO5E6ECN+Qheib5s4HRoSzUrwcEQ8a3vYa0vhCXUKwI+vuR0MLX89Wp uayfneNz4RdI1XAck8QcIRl3KYZC8eTvTAkXY9mb9SmWnkLuHYwbpmR/PkMf/1BJHhGfJJ cmWU3Jf0p3m+/lqYyMVnJW4toUj/8Cs= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-587-NmxFP1Q9PTqhYwWfZhobjQ-1; Thu, 30 Jan 2025 11:29:54 -0500 X-MC-Unique: NmxFP1Q9PTqhYwWfZhobjQ-1 X-Mimecast-MFC-AGG-ID: NmxFP1Q9PTqhYwWfZhobjQ Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 16DA31800361; Thu, 30 Jan 2025 16:29:52 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.184]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8D8FB1956094; Thu, 30 Jan 2025 16:29:47 +0000 (UTC) Date: Thu, 30 Jan 2025 16:29:43 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Shameer Kolothum Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, eric.auger@redhat.com, peter.maydell@linaro.org, jgg@nvidia.com, nicolinc@nvidia.com, ddutile@redhat.com, linuxarm@huawei.com, wangzhou1@hisilicon.com, jiangkunkun@huawei.com, jonathan.cameron@huawei.com, zhangfei.gao@linaro.org Subject: Re: [RFC PATCH 3/5] hw/arm/smmuv3: Associate a pci bus with a SMMUv3 Nested device Message-ID: References: <20241108125242.60136-1-shameerali.kolothum.thodi@huawei.com> <20241108125242.60136-4-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20241108125242.60136-4-shameerali.kolothum.thodi@huawei.com> User-Agent: Mutt/2.2.13 (2024-03-09) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.3, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: PZ8h2tKfiFmx On Fri, Nov 08, 2024 at 12:52:40PM +0000, Shameer Kolothum via wrote: > Subsequent patches will add IORT modifications to get this working. > > Signed-off-by: Shameer Kolothum > --- > hw/arm/smmuv3.c | 27 +++++++++++++++++++++++++++ > include/hw/arm/smmuv3.h | 2 ++ > 2 files changed, 29 insertions(+) > > diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c > index 0033eb8125..9b0a776769 100644 > --- a/hw/arm/smmuv3.c > +++ b/hw/arm/smmuv3.c > @@ -24,6 +24,7 @@ > #include "hw/qdev-properties.h" > #include "hw/qdev-core.h" > #include "hw/pci/pci.h" > +#include "hw/pci/pci_bridge.h" > #include "cpu.h" > #include "trace.h" > #include "qemu/log.h" > @@ -2201,12 +2202,32 @@ static void smmu_realize(DeviceState *d, Error **errp) > smmu_init_irq(s, dev); > } > > +static int smmuv3_nested_pci_host_bridge(Object *obj, void *opaque) > +{ > + DeviceState *d = opaque; > + SMMUv3NestedState *s_nested = ARM_SMMUV3_NESTED(d); > + > + if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { > + PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; > + if (s_nested->pci_bus && !strcmp(bus->qbus.name, s_nested->pci_bus)) { > + object_property_set_link(OBJECT(d), "primary-bus", OBJECT(bus), > + &error_abort); Is the SMMUv3Nested useful if no 'primary-bus' is set ? If not, then the 'realize' method ought to validate 'pci-bus' is not NULL and and raise an error if NULL. After object_child_foreach_recursive returns, 'realize' should also validate that 'primary-bus' has been set, and raise an error it not set, to detect typos in the 'pci-bus' property. > + } > + } > + return 0; > +} > + > static void smmu_nested_realize(DeviceState *d, Error **errp) > { > SMMUv3NestedState *s_nested = ARM_SMMUV3_NESTED(d); > SMMUv3NestedClass *c = ARM_SMMUV3_NESTED_GET_CLASS(s_nested); > + SysBusDevice *dev = SYS_BUS_DEVICE(d); > Error *local_err = NULL; > > + object_child_foreach_recursive(object_get_root(), > + smmuv3_nested_pci_host_bridge, d); > + object_property_set_bool(OBJECT(dev), "nested", true, &error_abort); > + > c->parent_realize(d, &local_err); > if (local_err) { > error_propagate(errp, local_err); > @@ -2293,6 +2314,11 @@ static Property smmuv3_properties[] = { > DEFINE_PROP_END_OF_LIST() > }; > > +static Property smmuv3_nested_properties[] = { > + DEFINE_PROP_STRING("pci-bus", SMMUv3NestedState, pci_bus), > + DEFINE_PROP_END_OF_LIST() > +}; > + > static void smmuv3_instance_init(Object *obj) > { > /* Nothing much to do here as of now */ > @@ -2320,6 +2346,7 @@ static void smmuv3_nested_class_init(ObjectClass *klass, void *data) > dc->vmsd = &vmstate_smmuv3; > device_class_set_parent_realize(dc, smmu_nested_realize, > &c->parent_realize); > + device_class_set_props(dc, smmuv3_nested_properties); > dc->user_creatable = true; > dc->hotpluggable = false; > } > diff --git a/include/hw/arm/smmuv3.h b/include/hw/arm/smmuv3.h > index 87e628be7a..96513fce56 100644 > --- a/include/hw/arm/smmuv3.h > +++ b/include/hw/arm/smmuv3.h > @@ -89,6 +89,8 @@ OBJECT_DECLARE_TYPE(SMMUv3NestedState, SMMUv3NestedClass, ARM_SMMUV3_NESTED) > > struct SMMUv3NestedState { > SMMUv3State smmuv3_state; > + > + char *pci_bus; > }; > > struct SMMUv3NestedClass { > -- > 2.34.1 > > With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|