From patchwork Thu Mar 2 16:15:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Mammedov X-Patchwork-Id: 13157530 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 C8795C678D4 for ; Thu, 2 Mar 2023 16:18:58 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pXlbr-0007SI-MW; Thu, 02 Mar 2023 11:16:47 -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 1pXlbU-0006ZW-Kx for qemu-devel@nongnu.org; Thu, 02 Mar 2023 11:16:25 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pXlbR-0000WX-0a for qemu-devel@nongnu.org; Thu, 02 Mar 2023 11:16:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677773775; 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=Yo++dBc/5aWCdHBju+glqAek6KyJetoX/h/Zt2dPXbE=; b=eGBiceKbCEjaCM1BSZuowvsaMA7KzLtNuCqtbhKcbKq0kL0MGE9AZHDh66uS10Wwe59HkC gpdBgcEiVM/lQM6UJxCnTaPXISIkvjuRSdw3KSeKthLKcEmjLmCuNEtDOeoGLdJEAZQXi3 /n3OJj8PHQ2j6552vuaNLHuZwzV98qk= 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-641-_JLt9-uNNcyRPis_0_X6Ow-1; Thu, 02 Mar 2023 11:16:12 -0500 X-MC-Unique: _JLt9-uNNcyRPis_0_X6Ow-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E29402A5954C for ; Thu, 2 Mar 2023 16:16:11 +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 5BFCE140EBF6; Thu, 2 Mar 2023 16:16:11 +0000 (UTC) From: Igor Mammedov To: qemu-devel@nongnu.org Cc: mst@redhat.com, berrange@redhat.com Subject: [PATCH v2 34/34] pcihp: add ACPI PCI hotplug specific is_hotpluggable_bus() callback Date: Thu, 2 Mar 2023 17:15:43 +0100 Message-Id: <20230302161543.286002-35-imammedo@redhat.com> In-Reply-To: <20230302161543.286002-1-imammedo@redhat.com> References: <20230302161543.286002-1-imammedo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; 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 Provide pcihp specific callback to check if bus is hotpluggable and consolidate its scattered hotplug criteria there. While at it clean up no longer needed qbus_set_hotplug_handler(BUS(bus), NULL) workarounds since callback makes qbus_is_hotpluggable() return correct answer even if hotplug_handler is set on bus. PS: see ("pci: fix 'hotplugglable' property behavior") for details why callback was introduced. Signed-off-by: Igor Mammedov --- include/hw/acpi/ich9.h | 1 + include/hw/acpi/pcihp.h | 1 + hw/acpi/acpi-pci-hotplug-stub.c | 4 ++++ hw/acpi/ich9.c | 6 +++++ hw/acpi/pcihp.c | 42 ++++++++++++++------------------- hw/acpi/piix4.c | 8 +++++++ hw/isa/lpc_ich9.c | 1 + 7 files changed, 39 insertions(+), 24 deletions(-) diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h index 57a542c4b8..2faf7f0cae 100644 --- a/include/hw/acpi/ich9.h +++ b/include/hw/acpi/ich9.h @@ -87,6 +87,7 @@ void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp); void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp); +bool ich9_pm_is_hotpluggable_bus(HotplugHandler *hotplug_dev, BusState *bus); void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list); #endif /* HW_ACPI_ICH9_H */ diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h index 04c98511a4..ef59810c17 100644 --- a/include/hw/acpi/pcihp.h +++ b/include/hw/acpi/pcihp.h @@ -58,6 +58,7 @@ typedef struct AcpiPciHpState { void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root, MemoryRegion *address_space_io, uint16_t io_base); +bool acpi_pcihp_is_hotpluggbale_bus(AcpiPciHpState *s, BusState *bus); void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp); void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s, diff --git a/hw/acpi/acpi-pci-hotplug-stub.c b/hw/acpi/acpi-pci-hotplug-stub.c index d1794399f7..dcee3ad7a1 100644 --- a/hw/acpi/acpi-pci-hotplug-stub.c +++ b/hw/acpi/acpi-pci-hotplug-stub.c @@ -40,3 +40,7 @@ void acpi_pcihp_reset(AcpiPciHpState *s) return; } +bool acpi_pcihp_is_hotpluggbale_bus(AcpiPciHpState *s, BusState *bus) +{ + return true; +} diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index f778ade7ea..25e2c7243e 100644 --- a/hw/acpi/ich9.c +++ b/hw/acpi/ich9.c @@ -578,6 +578,12 @@ void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, } } +bool ich9_pm_is_hotpluggable_bus(HotplugHandler *hotplug_dev, BusState *bus) +{ + ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev); + return acpi_pcihp_is_hotpluggbale_bus(&lpc->pm.acpi_pci_hotplug, bus); +} + void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list) { ICH9LPCState *s = ICH9_LPC_DEVICE(adev); diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c index 34cad061a8..dcfb779a7a 100644 --- a/hw/acpi/pcihp.c +++ b/hw/acpi/pcihp.c @@ -121,20 +121,6 @@ static void acpi_set_pci_info(bool has_bridge_hotplug) } } -static void acpi_pcihp_disable_root_bus(void) -{ - Object *host = acpi_get_i386_pci_host(); - PCIBus *bus; - - bus = PCI_HOST_BRIDGE(host)->bus; - if (bus && qbus_is_hotpluggable(BUS(bus))) { - /* setting the hotplug handler to NULL makes the bus non-hotpluggable */ - qbus_set_hotplug_handler(BUS(bus), NULL); - } - - return; -} - static void acpi_pcihp_test_hotplug_bus(PCIBus *bus, void *opaque) { AcpiPciHpFind *find = opaque; @@ -278,9 +264,6 @@ static void acpi_pcihp_update(AcpiPciHpState *s) void acpi_pcihp_reset(AcpiPciHpState *s) { - if (!s->use_acpi_root_pci_hotplug) { - acpi_pcihp_disable_root_bus(); - } acpi_set_pci_info(s->use_acpi_hotplug_bridge); acpi_pcihp_update(s); } @@ -320,13 +303,6 @@ void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s, object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { PCIBus *sec = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); - /* Remove all hot-plug handlers if hot-plug is disabled on slot */ - if (object_dynamic_cast(OBJECT(dev), TYPE_PCIE_SLOT) && - !PCIE_SLOT(pdev)->hotplug) { - qbus_set_hotplug_handler(BUS(sec), NULL); - return; - } - qbus_set_hotplug_handler(BUS(sec), OBJECT(hotplug_dev)); /* We don't have to overwrite any other hotplug handler yet */ assert(QLIST_EMPTY(&sec->child)); @@ -385,6 +361,24 @@ void acpi_pcihp_device_unplug_request_cb(HotplugHandler *hotplug_dev, acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS); } +bool acpi_pcihp_is_hotpluggbale_bus(AcpiPciHpState *s, BusState *bus) +{ + Object *o = OBJECT(bus->parent); + + if (s->use_acpi_hotplug_bridge && + object_dynamic_cast(o, TYPE_PCI_BRIDGE)) { + if (object_dynamic_cast(o, TYPE_PCIE_SLOT) && !PCIE_SLOT(o)->hotplug) { + return false; + } + return true; + } + + if (s->use_acpi_root_pci_hotplug) { + return true; + } + return false; +} + static uint64_t pci_read(void *opaque, hwaddr addr, unsigned int size) { AcpiPciHpState *s = opaque; diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index 0a233fa95d..63d2113b86 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -404,6 +404,13 @@ static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev, } } +static bool piix4_is_hotpluggable_bus(HotplugHandler *hotplug_dev, + BusState *bus) +{ + PIIX4PMState *s = PIIX4_PM(hotplug_dev); + return acpi_pcihp_is_hotpluggbale_bus(&s->acpi_pci_hotplug, bus); +} + static void piix4_pm_machine_ready(Notifier *n, void *opaque) { PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready); @@ -644,6 +651,7 @@ static void piix4_pm_class_init(ObjectClass *klass, void *data) hc->plug = piix4_device_plug_cb; hc->unplug_request = piix4_device_unplug_request_cb; hc->unplug = piix4_device_unplug_cb; + hc->is_hotpluggable_bus = piix4_is_hotpluggable_bus; adevc->ospm_status = piix4_ospm_status; adevc->send_event = piix4_send_gpe; adevc->madt_cpu = pc_madt_cpu_entry; diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c index d8303d0322..9714b0001e 100644 --- a/hw/isa/lpc_ich9.c +++ b/hw/isa/lpc_ich9.c @@ -865,6 +865,7 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data) hc->plug = ich9_pm_device_plug_cb; hc->unplug_request = ich9_pm_device_unplug_request_cb; hc->unplug = ich9_pm_device_unplug_cb; + hc->is_hotpluggable_bus = ich9_pm_is_hotpluggable_bus; adevc->ospm_status = ich9_pm_ospm_status; adevc->send_event = ich9_send_gpe; adevc->madt_cpu = pc_madt_cpu_entry;