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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1751018227; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y+rlDCMnDitVamDggHNlwynSmyTa7ogLb8c8cgKBN+g=; b=BoRndGUk33Y7jEuZ8bM/Ad5gUj2AmjIBha66PMsTpTQ+8fSfir2hoq81BM4QUp+Ym3TVII qs9ovf4jgcEHKIbrdF23/jTZ5V362+Jt7uP2L8mhLWwoqUwc+b7QI+bPFVMcGhWh9ClCSd XScr62uCnnkCHy52+PdYl6Zllq1/aiI= X-MC-Unique: 0aKbv2msMN6dqgoA5-CCqg-1 X-Mimecast-MFC-AGG-ID: 0aKbv2msMN6dqgoA5-CCqg_1751018224 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, imammedo@redhat.com, gustavo.romero@linaro.org, anisinha@redhat.com, mst@redhat.com, shannon.zhaosl@gmail.com Cc: pbonzini@redhat.com, Jonathan.Cameron@huawei.com, philmd@linaro.org, alex.bennee@linaro.org Subject: [PATCH v4 07/32] hw/pci-host/gpex-acpi: Use GED acpi pcihp property Date: Fri, 27 Jun 2025 11:54:56 +0200 Message-ID: <20250627095620.3300028-8-eric.auger@redhat.com> In-Reply-To: <20250627095620.3300028-1-eric.auger@redhat.com> References: <20250627095620.3300028-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Retrieve the acpi pcihp property value from the ged. In case this latter is not set, PCI native hotplug is used on pci0. For expander bridges we keep pci native hotplug, as done on x86 q35. Signed-off-by: Eric Auger Reviewed-by: Jonathan Cameron --- v3 -> v4: - Use object_property_get_bool (Igor) - rework the commit description (Igor) v2 -> v3: - don'use the virt arm machine option anymore. --- include/hw/pci-host/gpex.h | 1 + hw/arm/virt-acpi-build.c | 5 +++++ hw/pci-host/gpex-acpi.c | 3 ++- 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/include/hw/pci-host/gpex.h b/include/hw/pci-host/gpex.h index 84471533af..feaf827474 100644 --- a/include/hw/pci-host/gpex.h +++ b/include/hw/pci-host/gpex.h @@ -45,6 +45,7 @@ struct GPEXConfig { MemMapEntry pio; int irq; PCIBus *bus; + bool pci_native_hotplug; }; =20 typedef struct GPEXIrq GPEXIrq; diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 7e8e0f0298..57634c1578 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -123,12 +123,17 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMa= pEntry *memmap, uint32_t irq, VirtMachineState *vms) { int ecam_id =3D VIRT_ECAM_ID(vms->highmem_ecam); + bool acpi_pcihp =3D object_property_get_bool(OBJECT(vms->acpi_dev), + ACPI_PM_PROP_ACPI_PCIHP_BRI= DGE, + NULL); + struct GPEXConfig cfg =3D { .mmio32 =3D memmap[VIRT_PCIE_MMIO], .pio =3D memmap[VIRT_PCIE_PIO], .ecam =3D memmap[ecam_id], .irq =3D irq, .bus =3D vms->bus, + .pci_native_hotplug =3D !acpi_pcihp, }; =20 if (vms->highmem_mmio) { diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c index 80fc2bf032..44737a8d81 100644 --- a/hw/pci-host/gpex-acpi.c +++ b/hw/pci-host/gpex-acpi.c @@ -203,6 +203,7 @@ void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *= cfg) if (is_cxl) { build_cxl_osc_method(dev); } else { + /* pxb bridges do not have ACPI PCI Hot-plug enabled */ acpi_dsdt_add_host_bridge_methods(dev, true); } =20 @@ -278,7 +279,7 @@ void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *= cfg) } aml_append(dev, aml_name_decl("_CRS", rbuf)); =20 - acpi_dsdt_add_host_bridge_methods(dev, true); + acpi_dsdt_add_host_bridge_methods(dev, cfg->pci_native_hotplug); =20 Aml *dev_res0 =3D aml_device("%s", "RES0"); aml_append(dev_res0, aml_name_decl("_HID", aml_string("PNP0C02"))); --=20 2.49.0