From patchwork Tue Sep 15 14:43:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ani Sinha X-Patchwork-Id: 305361 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=-12.6 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 D2A9EC433E2 for ; Tue, 15 Sep 2020 14:51:24 +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 0ECE2206DC for ; Tue, 15 Sep 2020 14:51:23 +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="Fq5CpwAi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0ECE2206DC 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]:33072 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kICIl-0006HE-0y for qemu-devel@archiver.kernel.org; Tue, 15 Sep 2020 10:51:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33222) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kICBq-00066K-00 for qemu-devel@nongnu.org; Tue, 15 Sep 2020 10:44:15 -0400 Received: from mail-pf1-x441.google.com ([2607:f8b0:4864:20::441]:42024) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kICBm-0003y1-HM for qemu-devel@nongnu.org; Tue, 15 Sep 2020 10:44:13 -0400 Received: by mail-pf1-x441.google.com with SMTP id d6so2049492pfn.9 for ; Tue, 15 Sep 2020 07:44:10 -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=29JT28xmeW3jgfT6UGIG7f+UtiHgvWzqQ0aaiLG3mns=; b=Fq5CpwAiF92dlTSCVmKna8vNdURasdDvY630j+WPgYh0Hg4Ah6RH+Hhq5n504SCX07 VpHHxV20R5vN8rgVodYr/ZQtRslcgoZIc70USn72LHHuBS3TfGUE/c7VUayaDvLGsG2q V7UkrHkWXMWUVYblxqzJjjq4itLtYmGQ1Xt+OgBDYhzg9Ua3MR4g2n7ymuM4ltTdSWTb BA+h+y9C6zY/4M3PzAWWjyukVccoAi+fguI3KJFUK/R0g0BOxlZog5FBGzB1TOTa892z tFekuVj+kbbpinWKQF9/P+J4wDIVrFmcntP6VxdS6szJqMTvkT0lFXoKz+svqkazdBkh VfsQ== 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=29JT28xmeW3jgfT6UGIG7f+UtiHgvWzqQ0aaiLG3mns=; b=ujb1A1FBLYlx4oy2VxNHCkAaRLQKH+ApiIe1N6yBQT+sTAeLOQVpNqXcdHdaYveeJ9 +TDmHByHeh/PJ7Nfc/NnjOWqlEXgE31pKToTe1Hf+Y53VhF4uZq7teXki3a+li2U7anq MwVDFz0l32DMs2m5rhgr6FMUm1NUO/KAvvX2mSdN+7RT+DYmWS4mgXAJlBSeRVKrddnK hrGT1kH8uzNuwS+TtIqm89PTZECFWPrqA4INQRVGW5O9ZitNTW/uVSJInokFCV/87Im3 XzVoRDqWX8K92K/KT3FwB8/47GwzVm+PFm6PakzlR0iYc90BlfzUA49Cp86z0QdzGryb Gvwg== X-Gm-Message-State: AOAM531U4es3kNHkSTgQCXbMXOQkiVQWx6PLkICkOvbmh2Sp7Gqkl7yJ 3dMUETi8Z4yOkxGLTeVKmhAfSmcR9uvhxhDH X-Google-Smtp-Source: ABdhPJzVTMEbynQ4wEB5QoB4Y8eO1hKu5R0uHePTxQdRvzSGrsgCsJLD67PfQJuAytWnMmENcC1wGQ== X-Received: by 2002:a63:1620:: with SMTP id w32mr10988632pgl.73.1600181048729; Tue, 15 Sep 2020 07:44:08 -0700 (PDT) Received: from localhost.localdomain ([115.96.128.178]) by smtp.googlemail.com with ESMTPSA id r2sm11520693pga.94.2020.09.15.07.44.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Sep 2020 07:44:07 -0700 (PDT) From: Ani Sinha To: qemu-devel@nongnu.org Subject: [PATCH v2 9/9] piix4: don't reserve hw resources when hotplug is off globally Date: Tue, 15 Sep 2020 20:13:13 +0530 Message-Id: <20200915144314.4997-10-ani@anisinha.ca> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200915144314.4997-1-ani@anisinha.ca> References: <20200915144314.4997-1-ani@anisinha.ca> Received-SPF: none client-ip=2607:f8b0:4864:20::441; envelope-from=ani@anisinha.ca; helo=mail-pf1-x441.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" , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , 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 amls 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 AMLs for the PCNT method are only added when bsel is enabled for the corresponding pci bus or bridge hotplug is turned on. As a result, when the hotplug for both the root pci device and bridge are disabled, this AML in the DSDT acpi table is turned off. 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 also commit the updated golden master DSDT table acpi binary blobs as well. Following is a typical diff between the q35 acpi DSDT table blobs: @@ -1,30 +1,30 @@ /* * Intel ACPI Component Architecture * AML/ASL+ Disassembler version 20180105 (64-bit version) * Copyright (c) 2000 - 2018 Intel Corporation * * Disassembling to symbolic ASL+ operators * - * Disassembly of tests/data/acpi/q35/DSDT, Tue Sep 15 18:52:47 2020 + * Disassembly of /tmp/aml-3O0DR0, Tue Sep 15 18:52:47 2020 * * Original Table Header: * Signature "DSDT" - * Length 0x00001DFE (7678) + * Length 0x00001DF6 (7670) * Revision 0x01 **** 32-bit table (V1), no 64-bit math support - * Checksum 0xAC + * Checksum 0x17 * OEM ID "BOCHS " * OEM Table ID "BXPCDSDT" * OEM Revision 0x00000001 (1) * Compiler ID "BXPC" * Compiler Version 0x00000001 (1) */ DefinitionBlock ("", "DSDT", 1, "BOCHS ", "BXPCDSDT", 0x00000001) { Scope (\) { OperationRegion (DBG, SystemIO, 0x0402, One) Field (DBG, ByteAcc, NoLock, Preserve) { DBGB, 8 } @@ -3113,24 +3113,20 @@ Name (_ADR, 0x00010000) // _ADR: Address Method (_S1D, 0, NotSerialized) // _S1D: S1 Device State { Return (Zero) } Method (_S2D, 0, NotSerialized) // _S2D: S2 Device State { Return (Zero) } Method (_S3D, 0, NotSerialized) // _S3D: S3 Device State { Return (Zero) } } - - Method (PCNT, 0, NotSerialized) - { - } } } } Signed-off-by: Ani Sinha --- hw/acpi/piix4.c | 6 ++++-- hw/i386/acpi-build.c | 23 +++++++++++++++++------ tests/data/acpi/q35/DSDT | Bin 7678 -> 7670 bytes tests/data/acpi/q35/DSDT.acpihmat | Bin 9002 -> 8994 bytes tests/data/acpi/q35/DSDT.bridge | Bin 7695 -> 7688 bytes tests/data/acpi/q35/DSDT.cphp | Bin 8141 -> 8133 bytes tests/data/acpi/q35/DSDT.dimmpxm | Bin 9331 -> 9323 bytes tests/data/acpi/q35/DSDT.ipmibt | Bin 7753 -> 7745 bytes tests/data/acpi/q35/DSDT.memhp | Bin 9037 -> 9029 bytes tests/data/acpi/q35/DSDT.mmio64 | Bin 8808 -> 8801 bytes tests/data/acpi/q35/DSDT.numamem | Bin 7684 -> 7676 bytes tests/data/acpi/q35/DSDT.tis | Bin 8283 -> 8276 bytes 12 files changed, 21 insertions(+), 8 deletions(-) changelog: v1: initial patch. v2: fixed a bug and added acpi DSDT table blobs for q35 to make unit tests pass. diff --git a/tests/data/acpi/q35/DSDT b/tests/data/acpi/q35/DSDT index bba8884073a27427b88ac0d733c9c87330a59366..4fad91b72e279b744b0528fd687c862d3a3d5cfa 100644 GIT binary patch delta 33 pcmexo{mq)oCDEHUxHPVoYElb9FB)33dtLkYiwAT)&ZPnJlLVYfOBwQ@nt~9^r>33dtLmt$aH^xnv|OqSE1H6}jTDPF*R@=jTQb`iD!XTJ~z0NaZSF#rGn diff --git a/tests/data/acpi/q35/DSDT.cphp b/tests/data/acpi/q35/DSDT.cphp index 57d859cef9fa16a8f125c4b338611c8472699f38..8d2395e3cb4383b30e3840caed0d09ccad0c7323 100644 GIT binary patch delta 33 ocmX?Wf7G7KCDY0kO^r)&Kwi delta 42 xcmX?Vf7YJMCDvmYDcpr+5K3mdPFRw(KHo0nUCQ3;+bB3f%wz diff --git a/tests/data/acpi/q35/DSDT.dimmpxm b/tests/data/acpi/q35/DSDT.dimmpxm index 9d5bd5744e2ba2e0f6126c3aba0bb36af865e499..df7422051c6feadeaa3b6733ad7efa67c339b49d 100644 GIT binary patch delta 33 ocmezD@!EsSCD)i9vcGQi_CDc=Kufz delta 42 xcmX@=cGiu{CD^ diff --git a/tests/data/acpi/q35/DSDT.mmio64 b/tests/data/acpi/q35/DSDT.mmio64 index efd3f1188f2b55da1514212d4be081a61c2a96e9..d8dd702b69cc24a6b58b8eaa79ea02439a2a7dd9 100644 GIT binary patch delta 33 ocmaFi^3a9LCD)i>_Ld&VC^b00^lI82|tP diff --git a/tests/data/acpi/q35/DSDT.numamem b/tests/data/acpi/q35/DSDT.numamem index 1978b55f1255402bf9bade0b91150b5cb49789a4..f36d22063a6eed4fb107ffd0e10477a2d6d7a983 100644 GIT binary patch delta 33 pcmZp%`D4xH66_N4N0xzs@!&?THL{#;EHUxHPVoYElMl$+0sy+k3XK2& delta 42 xcmexk-D1P#66_MfBFDhM7`l;bjVzZROH6#QQ@ns1%jEsCw(KHo0nUCQ3;^@W3X}i< diff --git a/tests/data/acpi/q35/DSDT.tis b/tests/data/acpi/q35/DSDT.tis index 638de3872673d17b1958497d0e62c83653de1602..203030a61a92c204bb93c43fe79e546471ae2985 100644 GIT binary patch delta 38 ucmccZaK(YkCDUZRU~-WC8&31`DbH delta 45 zcmccOaNB{)CDio_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..91622e185b 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"); @@ -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,