From patchwork Thu Sep 24 07:00:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Suvorova X-Patchwork-Id: 11796417 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9679E6CB for ; Thu, 24 Sep 2020 07:06:24 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 4B37C235F7 for ; Thu, 24 Sep 2020 07:06:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Wjmt9wsh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B37C235F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:58648 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLLKh-0006VB-8o for patchwork-qemu-devel@patchwork.kernel.org; Thu, 24 Sep 2020 03:06:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34570) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLLFJ-0000ml-VQ for qemu-devel@nongnu.org; Thu, 24 Sep 2020 03:00:49 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:60122) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kLLFH-0005Hi-UO for qemu-devel@nongnu.org; Thu, 24 Sep 2020 03:00:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600930847; 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=IL7nzAh7Mf9HR3Z9mYJS5y5wKlSwZthpUxqWFbQmTzM=; b=Wjmt9wshxiziH9BGdSn73ClOTUWSstot8pjdNE+bANX60oM9G8yPXb4UMbgpPN0oomGFXx A0aLgpPzvPfZyprNFXMNktijJvXaYVU/U79i/E5kv1iRRyiKwTjNxiMLE2FVfKgkyeNnHF 5d9a1+YPujmGVZEzaWHmBoqEsBXGiuo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-133-3SGnW4NzOBiEyHxyYYUmfQ-1; Thu, 24 Sep 2020 03:00:45 -0400 X-MC-Unique: 3SGnW4NzOBiEyHxyYYUmfQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 639041008307; Thu, 24 Sep 2020 07:00:44 +0000 (UTC) Received: from pc-72.home.com (unknown [10.40.194.10]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7A20973668; Thu, 24 Sep 2020 07:00:36 +0000 (UTC) From: Julia Suvorova To: qemu-devel@nongnu.org Subject: [RFC PATCH v3 3/7] hw/pci/pcie: Do not initialize slot capability if acpihp is used Date: Thu, 24 Sep 2020 09:00:09 +0200 Message-Id: <20200924070013.165026-4-jusual@redhat.com> In-Reply-To: <20200924070013.165026-1-jusual@redhat.com> References: <20200924070013.165026-1-jusual@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jusual@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=jusual@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 23:02:20 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.228, 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, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ani Sinha , Igor Mammedov , Julia Suvorova , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Instead of changing the hot-plug type in _OSC register, do not initialize the slot capability or set the 'Slot Implemented' flag. This way guest will choose ACPI hot-plug if it is preferred and leave the option to use SHPC with pcie-pci-bridge. Signed-off-by: Julia Suvorova --- hw/i386/acpi-build.h | 2 ++ hw/i386/acpi-build.c | 2 +- hw/pci/pcie.c | 16 ++++++++++++++++ 3 files changed, 19 insertions(+), 1 deletion(-) diff --git a/hw/i386/acpi-build.h b/hw/i386/acpi-build.h index 487ec7710f..4c5bfb3d0b 100644 --- a/hw/i386/acpi-build.h +++ b/hw/i386/acpi-build.h @@ -11,4 +11,6 @@ extern const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio; void acpi_setup(void); +Object *object_resolve_type_unambiguous(const char *typename); + #endif diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index cf503b16af..b7811a8912 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -174,7 +174,7 @@ static void init_common_fadt_data(MachineState *ms, Object *o, *data = fadt; } -static Object *object_resolve_type_unambiguous(const char *typename) +Object *object_resolve_type_unambiguous(const char *typename) { bool ambig; Object *o = object_resolve_path_type("", typename, &ambig); diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 5b48bae0f6..c1a082e8b9 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -27,6 +27,8 @@ #include "hw/pci/pci_bus.h" #include "hw/pci/pcie_regs.h" #include "hw/pci/pcie_port.h" +#include "hw/i386/ich9.h" +#include "hw/i386/acpi-build.h" #include "qemu/range.h" //#define DEBUG_PCIE @@ -515,12 +517,26 @@ void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev, pcie_cap_slot_push_attention_button(hotplug_pdev); } +static bool acpi_pcihp_enabled(void) +{ + Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); + + return lpc && + object_property_get_bool(lpc, "acpi-pci-hotplug-with-bridge-support", + NULL); + +} + /* pci express slot for pci express root/downstream port PCI express capability slot registers */ void pcie_cap_slot_init(PCIDevice *dev, PCIESlot *s) { uint32_t pos = dev->exp.exp_cap; + if (acpi_pcihp_enabled()) { + return; + } + pci_word_test_and_set_mask(dev->config + pos + PCI_EXP_FLAGS, PCI_EXP_FLAGS_SLOT);