From patchwork Thu Jan 12 14:03:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 1725191 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=dU0NH9i0; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Nt6jw0sV1z23fd for ; Fri, 13 Jan 2023 01:43:31 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pFyBU-0002R4-0i; Thu, 12 Jan 2023 09:04:00 -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 1pFyBH-0002Fi-F6 for qemu-devel@nongnu.org; Thu, 12 Jan 2023 09:03:48 -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 1pFyBB-0005yI-Qg for qemu-devel@nongnu.org; Thu, 12 Jan 2023 09:03:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1673532221; 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=N0LoJubiwngY0cGmDQ2qAFVnXQZj4+qFljL/53gTU1E=; b=dU0NH9i0lFsAK7QYcxJW67nv7Y/ayQu1uO6E6Wh9wK7ZozeD6f5x511pu0X4cs11D5qqOg gKkjrRFqLjTFDDNFw0Hly5Pgy3j5fJ1/wIOLRm2RqrU2qWZm3EqyKLcD76hp2FkIi9gj1p +P/pLErDPmp9+Ub1rpCHyhMqj3MmlNc= 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-158-dfwfM-EqMfC1Mrl0NnmzUg-1; Thu, 12 Jan 2023 09:03:40 -0500 X-MC-Unique: dfwfM-EqMfC1Mrl0NnmzUg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B7D8A2807D77; Thu, 12 Jan 2023 14:03:38 +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 3230B4085720; Thu, 12 Jan 2023 14:03:38 +0000 (UTC) From: Igor Mammedov To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" , Ani Sinha Subject: [PATCH 31/40] pcihp: isolate rule whether slot should be described in DSDT Date: Thu, 12 Jan 2023 15:03:03 +0100 Message-Id: <20230112140312.3096331-32-imammedo@redhat.com> In-Reply-To: <20230112140312.3096331-1-imammedo@redhat.com> References: <20230112140312.3096331-1-imammedo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Igor Mammedov --- hw/i386/acpi-build.c | 83 +++++++++++++++++++++++--------------------- 1 file changed, 43 insertions(+), 40 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 5b4f453395..56a4d0549c 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -385,6 +385,42 @@ static void build_append_pcihp_notify_entry(Aml *method, int slot) aml_append(method, if_ctx); } +static bool is_devfn_ignored(const int devfn, const PCIBus *bus, + bool bus_has_hotplug) +{ + const PCIDevice *pdev = bus->devices[devfn]; + + if (pdev) { + if (PCI_FUNC(devfn)) { + if (IS_PCI_BRIDGE(pdev)) { + /* + * Ignore only hotplugged PCI bridges on !0 functions, but + * allow describing cold plugged bridges on all functions + */ + if (DEVICE(pdev)->hotplugged) { + return true; + } + } else if (!get_dev_aml_func(DEVICE(pdev))) { + /* + * Ignore all other devices on !0 functions unless they + * have AML description (i.e have get_dev_aml_func() != 0) + */ + return true; + } + } + } else { /* non populated slots */ + /* + * hotplug is supported only for non-multifunction device + * so generate device description only for function 0 + */ + if (!bus_has_hotplug || PCI_FUNC(devfn) || + (pci_bus_is_express(bus) && PCI_SLOT(devfn) > 0)) { + return true; + } + } + return false; +} + void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) { Aml *dev, *notify_method = NULL, *method; @@ -400,59 +436,26 @@ void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) } for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { - DeviceClass *dc; PCIDevice *pdev = bus->devices[devfn]; int slot = PCI_SLOT(devfn); int func = PCI_FUNC(devfn); /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */ int adr = slot << 16 | func; - bool hotpluggbale_slot = false; - bool cold_plugged_bridge = false; + bool hotpluggbale_slot = true; - if (pdev) { - dc = DEVICE_GET_CLASS(pdev); + if (is_devfn_ignored(devfn, bus, !!bsel)) { + continue; + } + if (pdev) { /* * Cold plugged bridges aren't themselves hot-pluggable. * Hotplugged bridges *are* hot-pluggable. */ - cold_plugged_bridge = IS_PCI_BRIDGE(pdev) && + bool cold_plugged_bridge = IS_PCI_BRIDGE(pdev) && !DEVICE(pdev)->hotplugged; - - hotpluggbale_slot = bsel && dc->hotpluggable && + hotpluggbale_slot = bsel && DEVICE_GET_CLASS(pdev)->hotpluggable && !cold_plugged_bridge; - - if (func) { - if (IS_PCI_BRIDGE(pdev)) { - /* - * Ignore only hotplugged PCI bridges on !0 functions, but - * allow describing cold plugged bridges on all functions - */ - if (DEVICE(pdev)->hotplugged) { - continue; - } - } else if (!get_dev_aml_func(DEVICE(pdev))) { - /* - * Ignore all other devices on !0 functions unless they - * have AML description (i.e have get_dev_aml_func() != 0) - */ - continue; - } - } - } else { - /* - * hotplug is supported only for non-multifunction device - * so generate device description only for function 0 - */ - if (bsel && !func) { - if (pci_bus_is_express(bus) && slot > 0) { - break; - } - /* mark it as empty hotpluggable slot */ - hotpluggbale_slot = true; - } else { - continue; - } } /* start to compose PCI device descriptor */