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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752480447; 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=eSoltnSKTqUsvXTIRfkLK5qGOKAxF7xnETbH+AmzgGo=; b=QGKJmvYi/zsj/z3iuFZncbq0IjbWI74lglsp/Va76eU24zptjkNQAvJ6OtTl5IXVvSL013 WYesPoJGfBa0wUyn5OoLk+2jKeMiW0sxQLd+mRWPZu4Ylwa/KQCC/LlyQ95dB/8UPJXVJB i+461Qf2xwSKIzYPhVFWgI09RElQHcM= X-MC-Unique: DZI1eTxmNWWWcwPUPc4iiQ-1 X-Mimecast-MFC-AGG-ID: DZI1eTxmNWWWcwPUPc4iiQ_1752480444 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, Jonathan.Cameron@huawei.com, gustavo.romero@linaro.org, anisinha@redhat.com, mst@redhat.com, shannon.zhaosl@gmail.com Cc: pbonzini@redhat.com, philmd@linaro.org, alex.bennee@linaro.org Subject: [PATCH v7 07/36] hw/pci-host/gpex-acpi: Use GED acpi pcihp property Date: Mon, 14 Jul 2025 10:04:51 +0200 Message-ID: <20250714080639.2525563-8-eric.auger@redhat.com> In-Reply-To: <20250714080639.2525563-1-eric.auger@redhat.com> References: <20250714080639.2525563-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 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 --- v4 -> v5: - check vms->acpi_dev 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 | 9 +++++++++ hw/pci-host/gpex-acpi.c | 3 ++- 3 files changed, 12 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 0dfb8ec2c3..8768d5ce50 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -144,12 +144,21 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMa= pEntry *memmap, int ecam_id =3D VIRT_ECAM_ID(vms->highmem_ecam); bool cxl_present =3D false; PCIBus *bus =3D vms->bus; + bool acpi_pcihp =3D false; + + if (vms->acpi_dev) { + acpi_pcihp =3D object_property_get_bool(OBJECT(vms->acpi_dev), + ACPI_PM_PROP_ACPI_PCIHP_BRID= GE, + 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