From patchwork Fri Feb 24 15:37:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 13151436 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 7A075C61DA3 for ; Fri, 24 Feb 2023 15:45:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pVa9Z-0003tC-Dy; Fri, 24 Feb 2023 10:38:33 -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 1pVa9Q-0003nj-Uq for qemu-devel@nongnu.org; Fri, 24 Feb 2023 10:38:25 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pVa9O-00071j-Rp for qemu-devel@nongnu.org; Fri, 24 Feb 2023 10:38:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677253102; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rGdD8nWtph/fDq1vVtxc2R7LaD/ySuhOm4YpWD4sn60=; b=RR2i/lJopcFDGogZ2PEWFLAIbciYeFjNsTGPsNCLQ4edgbqpiBdXKTFvCvNv7VfBdk7i1L +zEgL8vOTOXopqGt1+xwaf6+ucNOjo9B+FdlKylKIgHSauYZZ2ku2B6bpgp6nSOAPx6fFV E2fPRWqizcGofJvzKDq+SYhiUYvqzIM= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-204-kq4IRGRCOS-U0iV-7wj-VQ-1; Fri, 24 Feb 2023 10:38:20 -0500 X-MC-Unique: kq4IRGRCOS-U0iV-7wj-VQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 00E9429A9D38; Fri, 24 Feb 2023 15:38:20 +0000 (UTC) Received: from dell-r430-03.lab.eng.brq2.redhat.com (dell-r430-03.lab.eng.brq2.redhat.com [10.37.153.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 55676492B12; Fri, 24 Feb 2023 15:38:19 +0000 (UTC) From: Igor Mammedov To: qemu-devel@nongnu.org Cc: mst@redhat.com, ani@anisinha.ca, berrange@redhat.com Subject: [PATCH 06/33] x86: pcihp: fix missing PCNT callchain when intermediate root-port has 'hotplug=off' set Date: Fri, 24 Feb 2023 16:37:45 +0100 Message-Id: <20230224153812.4176226-7-imammedo@redhat.com> In-Reply-To: <20230224153812.4176226-1-imammedo@redhat.com> References: <20230224153812.4176226-1-imammedo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass client-ip=170.10.133.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H2=-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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Beside BSEL numbers change (due to 2 extra root-ports in q35/miltibridge test), following change is expected: Scope (\_SB.PCI0) { ... + Scope (S50) + { + Scope (S00) + { + Method (PCNT, 0, NotSerialized) + { + BNUM = Zero + DVNT (PCIU, One) + DVNT (PCID, 0x03) + } + } + + Method (PCNT, 0, NotSerialized) + { + ^S00.PCNT + } + } ... Method (PCNT, 0, NotSerialized) { + ^S50.PCNT () ^S13.PCNT () ^S12.PCNT () ^S11.PCNT () I practice [1] hasn't broke anything since on hardware side we unset hotplug_handler on such intermediate port => hotplug behind it has not been properly wired and as result not worked. 1) Fixes: ddab4d3fae4e8 ("pcihp: compose PCNT callchain right before its user _GPE._E01") Signed-off-by: Igor Mammedov --- hw/i386/acpi-build.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index b67dcbbb37..c0674ae2d1 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -516,16 +516,24 @@ static bool build_append_notfication_callback(Aml *parent_scope, PCIBus *sec; QObject *bsel; int nr_notifiers = 0; + GQueue *pcnt_bus_list = g_queue_new(); QLIST_FOREACH(sec, &bus->child, sibling) { Aml *br_scope = aml_scope("S%.02X", sec->parent_dev->devfn); - if (pci_bus_is_root(sec) || - !object_property_find(OBJECT(sec), ACPI_PCIHP_PROP_BSEL)) { + if (pci_bus_is_root(sec)) { continue; } nr_notifiers = nr_notifiers + build_append_notfication_callback(br_scope, sec); - aml_append(parent_scope, br_scope); + /* + * add new child scope to parent + * and keep track of bus that have PCNT, + * bus list is used later to call children PCNTs from this level PCNT + */ + if (nr_notifiers) { + g_queue_push_tail(pcnt_bus_list, sec); + aml_append(parent_scope, br_scope); + } } /* @@ -549,17 +557,13 @@ static bool build_append_notfication_callback(Aml *parent_scope, } /* Notify about child bus events in any case */ - QLIST_FOREACH(sec, &bus->child, sibling) { - if (pci_bus_is_root(sec) || - !object_property_find(OBJECT(sec), ACPI_PCIHP_PROP_BSEL)) { - continue; - } - + while ((sec = g_queue_pop_head(pcnt_bus_list))) { aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn)); } aml_append(parent_scope, method); qobject_unref(bsel); + g_queue_free(pcnt_bus_list); return !!nr_notifiers; }