From 6c36ec46b0d28f682eed1ce1278989535c1307dc Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Thu, 12 Jan 2023 15:03:01 +0100 Subject: [PATCH] pcihp: make bridge describe itself using AcpiDevAmlIfClass:build_dev_aml simplify build_append_pci_bus_devices() a bit by handling bridge specific logic in bridge dedicated AcpiDevAmlIfClass::build_dev_aml callback. Signed-off-by: Igor Mammedov Message-Id: <20230112140312.3096331-30-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/Kconfig | 4 ++++ hw/acpi/meson.build | 4 +++- hw/acpi/pci-bridge-stub.c | 20 ++++++++++++++++++++ hw/acpi/pci-bridge.c | 27 +++++++++++++++++++++++++++ hw/i386/Kconfig | 1 + hw/i386/acpi-build.c | 17 ++--------------- hw/pci/pci_bridge.c | 9 +++++++++ include/hw/acpi/pci.h | 4 ++++ 8 files changed, 70 insertions(+), 16 deletions(-) create mode 100644 hw/acpi/pci-bridge-stub.c create mode 100644 hw/acpi/pci-bridge.c diff --git a/hw/acpi/Kconfig b/hw/acpi/Kconfig index 1f7803fdab..e07d3204eb 100644 --- a/hw/acpi/Kconfig +++ b/hw/acpi/Kconfig @@ -39,6 +39,10 @@ config ACPI_PCIHP bool depends on ACPI +config ACPI_PCI_BRIDGE + bool + depends on ACPI && PCI && ACPI_PCIHP + config ACPI_HMAT bool depends on ACPI diff --git a/hw/acpi/meson.build b/hw/acpi/meson.build index 30054a8cdc..50b73129b4 100644 --- a/hw/acpi/meson.build +++ b/hw/acpi/meson.build @@ -19,6 +19,7 @@ acpi_ss.add(when: 'CONFIG_ACPI_HW_REDUCED', if_true: files('generic_event_device acpi_ss.add(when: 'CONFIG_ACPI_HMAT', if_true: files('hmat.c')) acpi_ss.add(when: 'CONFIG_ACPI_APEI', if_true: files('ghes.c'), if_false: files('ghes-stub.c')) acpi_ss.add(when: 'CONFIG_ACPI_PIIX4', if_true: files('piix4.c')) +acpi_ss.add(when: 'CONFIG_ACPI_PCI_BRIDGE', if_true: files('pci-bridge.c')) acpi_ss.add(when: 'CONFIG_ACPI_PCIHP', if_true: files('pcihp.c')) acpi_ss.add(when: 'CONFIG_ACPI_PCIHP', if_false: files('acpi-pci-hotplug-stub.c')) acpi_ss.add(when: 'CONFIG_ACPI_VIOT', if_true: files('viot.c')) @@ -30,9 +31,10 @@ if have_tpm acpi_ss.add(files('tpm.c')) endif softmmu_ss.add(when: 'CONFIG_ACPI', if_false: files('acpi-stub.c', 'aml-build-stub.c', 'ghes-stub.c', 'acpi_interface.c')) +softmmu_ss.add(when: 'CONFIG_ACPI_PCI_BRIDGE', if_false: files('pci-bridge-stub.c')) softmmu_ss.add_all(when: 'CONFIG_ACPI', if_true: acpi_ss) softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('acpi-stub.c', 'aml-build-stub.c', 'acpi-x86-stub.c', 'ipmi-stub.c', 'ghes-stub.c', 'acpi-mem-hotplug-stub.c', 'acpi-cpu-hotplug-stub.c', 'acpi-pci-hotplug-stub.c', 'acpi-nvdimm-stub.c', - 'cxl-stub.c')) + 'cxl-stub.c', 'pci-bridge-stub.c')) diff --git a/hw/acpi/pci-bridge-stub.c b/hw/acpi/pci-bridge-stub.c new file mode 100644 index 0000000000..9d78638c48 --- /dev/null +++ b/hw/acpi/pci-bridge-stub.c @@ -0,0 +1,20 @@ +/* + * QEMU ACPI PCI bridge stub + * + * Copyright (c) 2023 Red Hat, Inc. + * + * Author: + * Igor Mammedov + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/acpi/pci.h" + +void build_pci_bridge_aml(AcpiDevAmlIf *adev, Aml *scope) +{ +} diff --git a/hw/acpi/pci-bridge.c b/hw/acpi/pci-bridge.c new file mode 100644 index 0000000000..5f3ee5157f --- /dev/null +++ b/hw/acpi/pci-bridge.c @@ -0,0 +1,27 @@ +/* + * QEMU ACPI PCI bridge + * + * Copyright (c) 2023 Red Hat, Inc. + * + * Author: + * Igor Mammedov + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/acpi/pci.h" +#include "hw/pci/pci_bridge.h" +#include "hw/acpi/pcihp.h" + +void build_pci_bridge_aml(AcpiDevAmlIf *adev, Aml *scope) +{ + PCIBridge *br = PCI_BRIDGE(adev); + + if (object_property_find(OBJECT(&br->sec_bus), ACPI_PCIHP_PROP_BSEL)) { + build_append_pci_bus_devices(scope, pci_bridge_get_sec_bus(br)); + } +} diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig index c4fb5b49bd..1bf47b0b0b 100644 --- a/hw/i386/Kconfig +++ b/hw/i386/Kconfig @@ -58,6 +58,7 @@ config PC_ACPI select ACPI_X86 select ACPI_CPU_HOTPLUG select ACPI_MEMORY_HOTPLUG + select ACPI_PCI_BRIDGE select ACPI_VIOT select SMBUS_EEPROM select PFLASH_CFI01 diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 8045b20713..49181a55b1 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -383,8 +383,7 @@ static void build_append_pcihp_notify_entry(Aml *method, int slot) aml_append(method, if_ctx); } -static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, - bool pcihp_bridge_en) +void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) { Aml *dev, *notify_method = NULL, *method; QObject *bsel; @@ -406,7 +405,6 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */ int adr = slot << 16 | func; bool hotpluggbale_slot = false; - bool bridge_in_acpi = false; bool cold_plugged_bridge = false; if (pdev) { @@ -418,7 +416,6 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, */ cold_plugged_bridge = IS_PCI_BRIDGE(pdev) && !DEVICE(pdev)->hotplugged; - bridge_in_acpi = cold_plugged_bridge && pcihp_bridge_en; hotpluggbale_slot = bsel && dc->hotpluggable && !cold_plugged_bridge; @@ -471,16 +468,6 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, call_dev_aml_func(DEVICE(pdev), dev); - if (bridge_in_acpi) { - /* - * device is coldplugged bridge, - * add child device descriptions into its scope - */ - PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); - - build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en); - } - if (hotpluggbale_slot) { aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); /* add _EJ0 to make slot hotpluggable */ @@ -1704,7 +1691,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->bus; Aml *scope = aml_scope("PCI0"); /* Scan all PCI buses. Generate tables to support hotplug. */ - build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en); + build_append_pci_bus_devices(scope, bus); aml_append(sb_scope, scope); } } diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c index a1a1cc861e..dd5af508f9 100644 --- a/hw/pci/pci_bridge.c +++ b/hw/pci/pci_bridge.c @@ -37,6 +37,7 @@ #include "qemu/range.h" #include "qapi/error.h" #include "hw/acpi/acpi_aml_interface.h" +#include "hw/acpi/pci.h" /* PCI bridge subsystem vendor ID helper functions */ #define PCI_SSVID_SIZEOF 8 @@ -468,10 +469,18 @@ int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset, return 0; } +static void pci_bridge_class_init(ObjectClass *klass, void *data) +{ + AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass); + + adevc->build_dev_aml = build_pci_bridge_aml; +} + static const TypeInfo pci_bridge_type_info = { .name = TYPE_PCI_BRIDGE, .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(PCIBridge), + .class_init = pci_bridge_class_init, .abstract = true, .interfaces = (InterfaceInfo[]) { { TYPE_ACPI_DEV_AML_IF }, diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h index b5deee0a9d..467a99461c 100644 --- a/include/hw/acpi/pci.h +++ b/include/hw/acpi/pci.h @@ -27,6 +27,7 @@ #define HW_ACPI_PCI_H #include "hw/acpi/bios-linker-loader.h" +#include "hw/acpi/acpi_aml_interface.h" typedef struct AcpiMcfgInfo { uint64_t base; @@ -36,4 +37,7 @@ typedef struct AcpiMcfgInfo { void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info, const char *oem_id, const char *oem_table_id); Aml *aml_pci_device_dsm(void); + +void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus); +void build_pci_bridge_aml(AcpiDevAmlIf *adev, Aml *scope); #endif