From patchwork Fri Sep 18 07:23:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ani Sinha X-Patchwork-Id: 273430 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A9F8C43463 for ; Fri, 18 Sep 2020 07:37:55 +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 CC2D8208C3 for ; Fri, 18 Sep 2020 07:37:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=anisinha-ca.20150623.gappssmtp.com header.i=@anisinha-ca.20150623.gappssmtp.com header.b="iSYhFmyL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC2D8208C3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=anisinha.ca Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:37292 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kJAxt-0002p3-VD for qemu-devel@archiver.kernel.org; Fri, 18 Sep 2020 03:37:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34950) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJAkz-0003bJ-Ao for qemu-devel@nongnu.org; Fri, 18 Sep 2020 03:24:33 -0400 Received: from mail-pl1-x643.google.com ([2607:f8b0:4864:20::643]:43119) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kJAkx-0003Ns-6W for qemu-devel@nongnu.org; Fri, 18 Sep 2020 03:24:32 -0400 Received: by mail-pl1-x643.google.com with SMTP id e4so2522629pln.10 for ; Fri, 18 Sep 2020 00:24:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anisinha-ca.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hwe5GniuFBtRsQStv5CFTOAKIjaim/d3r3Ct4+Q3A/A=; b=iSYhFmyLSnfpEnUJhce7vB2zyE+W5BpouHwbSB9SqQfTQJlJHRIT48OS3pd16FrgPL w0XA+F+Jc+UkQu2pA8EdVzA3SmM+jC4WSGnNOF9rmaR+SPOYR74cfsEQC4AIEYD7T2e4 6ksIOp7eVPFDcRjzlhzlrjZAjOTKytDXagig8fFdZk9DjgP91zstoFYsYr3PQ9nLGePK LZj48otIV1nxBASNaxzdSyQDrEleJwhImn2wJicw99RiteRng/KB+MldjR5zx3tBPJVT gp9SWoMhHbA/zgCIkn/Uq59gpFSg5IH/yuuNLDXZI/ymYB/f5Nuk4q24uJhIpYdPHn3n CgVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=hwe5GniuFBtRsQStv5CFTOAKIjaim/d3r3Ct4+Q3A/A=; b=mWeiobgU8BOjUpMBxy8uv+GfwzhPcf6+MDHD0HwNO0v30qOqODMMKjTJZXfldGLAlK Rus6RakSElIu7fJ9iCeXFJjUNFLDZEgGQ/A+nshIGLPrjBv+pAR6FAQp+TQgeeO9KRIK 7yFgQkCPs9hlxZBB1+ir5YydJpy7Kz5jRu6J0zsanRlQEby3mQlTFfn3JFOY0cEd8j9Z 1Ol9UuR4dXxznLLU6YWoV8jvWmyyMX4nE4o9YrYnldnT4S0Lbv55jVDGtCUIpNml9+mU USa+YVmx9fBEKVUHrJZd4sva3e38Svo/dPcUPgqEka0j4or8F7xso4vv9W0gUXhWzJ+b lyiQ== X-Gm-Message-State: AOAM533q2qT0Iw8dEVqTfOlhK27h1q4k3FI4n9lkL3z+0gQiL93TXcX/ VYtC7XFcr+Ir6Jx2NRLs4JRfMAo8nZViwzMH X-Google-Smtp-Source: ABdhPJz+E6ZeADPa+l/MtBVug+SSl7fUnSUMbdDJ7pTGuBymomIy75Et1OcTZwbjuzP2Bxb1Igu5Ag== X-Received: by 2002:a17:90b:1b03:: with SMTP id nu3mr11804270pjb.148.1600413869294; Fri, 18 Sep 2020 00:24:29 -0700 (PDT) Received: from localhost.localdomain ([115.96.124.157]) by smtp.googlemail.com with ESMTPSA id b18sm2010782pfr.4.2020.09.18.00.24.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2020 00:24:28 -0700 (PDT) From: Ani Sinha To: qemu-devel@nongnu.org Subject: [PATCH v9 10/13] piix4: don't reserve hw resources when hotplug is off globally Date: Fri, 18 Sep 2020 12:53:22 +0530 Message-Id: <20200918072325.9933-11-ani@anisinha.ca> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200918072325.9933-1-ani@anisinha.ca> References: <20200918072325.9933-1-ani@anisinha.ca> Received-SPF: none client-ip=2607:f8b0:4864:20::643; envelope-from=ani@anisinha.ca; helo=mail-pl1-x643.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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: Eduardo Habkost , "Michael S. Tsirkin" , jusual@redhat.com, =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?b?w6k=?= , Aleksandar Markovic , Paolo Bonzini , Ani Sinha , Igor Mammedov , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When acpi hotplug is turned off for both root pci bus as well as for pci bridges, we should not generate the related ACPI code for DSDT table or initialize related hw ports or reserve hw resources. This change makes sure all those operations are turned off in the case ACPI pci hotplug is off globally. In this change, we also make sure ACPI code for the PCNT method are only added when bsel is enabled for the corresponding pci bus or bridge hotplug is turned on. As q35 machines do not use bsel for it's pci buses at this point in time, this change affects DSDT acpi table for q35 machines as well. Therefore, we will also need to commit the updated golden master DSDT table acpi binary blobs as well. Following is the list of blobs which needs updating: tests/data/acpi/q35/DSDT tests/data/acpi/q35/DSDT.acpihmat tests/data/acpi/q35/DSDT.bridge tests/data/acpi/q35/DSDT.cphp tests/data/acpi/q35/DSDT.dimmpxm tests/data/acpi/q35/DSDT.ipmibt tests/data/acpi/q35/DSDT.memhp tests/data/acpi/q35/DSDT.mmio64 tests/data/acpi/q35/DSDT.numamem tests/data/acpi/q35/DSDT.tis These tables are updated in the following commit. Without the updated table blobs, the unit tests would fail with this patch. Signed-off-by: Ani Sinha Reviewed-by: Igor Mammedov --- hw/acpi/piix4.c | 6 ++++-- hw/i386/acpi-build.c | 25 ++++++++++++++++++------- 2 files changed, 22 insertions(+), 9 deletions(-) diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index e6163bb6ce..b70b1f98af 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -596,8 +596,10 @@ static void piix4_acpi_system_hot_add_init(MemoryRegion *parent, "acpi-gpe0", GPE_LEN); memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe); - acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent, - s->use_acpi_hotplug_bridge); + if (s->use_acpi_hotplug_bridge || s->use_acpi_root_pci_hotplug) { + acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent, + s->use_acpi_hotplug_bridge); + } s->cpu_hotplug_legacy = true; object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy", diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index e079b686f5..e41bb0992b 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -95,6 +95,7 @@ typedef struct AcpiPmInfo { bool s3_disabled; bool s4_disabled; bool pcihp_bridge_en; + bool pcihp_root_en; uint8_t s4_val; AcpiFadtData fadt; uint16_t cpu_hp_io_base; @@ -245,6 +246,9 @@ static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) pm->pcihp_bridge_en = object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support", NULL); + pm->pcihp_root_en = + object_property_get_bool(obj, "acpi-root-pci-hotplug", + NULL); } static void acpi_get_misc_info(AcpiMiscInfo *info) @@ -450,10 +454,12 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, } /* Append PCNT method to notify about events on local and child buses. - * Add unconditionally for root since DSDT expects it. + * Add this method for root bus only when hotplug is enabled since DSDT + * expects it. */ - method = aml_method("PCNT", 0, AML_NOTSERIALIZED); - + if (bsel || pcihp_bridge_en) { + method = aml_method("PCNT", 0, AML_NOTSERIALIZED); + } /* If bus supports hotplug select it and notify about local events */ if (bsel) { uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); @@ -479,7 +485,10 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, aml_append(method, aml_name("^S%.02X.PCNT", devfn)); } } - aml_append(parent_scope, method); + + if (bsel || pcihp_bridge_en) { + aml_append(parent_scope, method); + } qobject_unref(bsel); } @@ -1504,7 +1513,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, build_hpet_aml(dsdt); build_piix4_isa_bridge(dsdt); build_isa_devices_aml(dsdt); - build_piix4_pci_hotplug(dsdt); + if (pm->pcihp_bridge_en || pm->pcihp_root_en) { + build_piix4_pci_hotplug(dsdt); + } build_piix4_pci0_int(dsdt); } else { sb_scope = aml_scope("_SB"); @@ -1546,7 +1557,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, { aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); - if (misc->is_piix4) { + if (misc->is_piix4 && (pm->pcihp_bridge_en || pm->pcihp_root_en)) { method = aml_method("_E01", 0, AML_NOTSERIALIZED); aml_append(method, aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); @@ -1698,7 +1709,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, crs_range_set_free(&crs_range_set); /* reserve PCIHP resources */ - if (pm->pcihp_io_len) { + if (pm->pcihp_io_len && (pm->pcihp_bridge_en || pm->pcihp_root_en)) { dev = aml_device("PHPR"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); aml_append(dev,