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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750067494; 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=EgusPM07kBAeHWD5Y+8x0seUuXzRUdXP54zjL+CPYiQ=; b=YpetrK8v2cqavw6iBTHYncaBebh70n4OTEYnTv8VSz46jm/IGNxGSymTxDSr30GYfMtVfi kgphxFLY68kLm1TZFRta93NpnYlzmA7CyVaTss5qGlm88gInsx8PFssIBGPW34FgbBJ3ST xWyodtJUWDswLqYQ4G5uY1QQBXKSURU= X-MC-Unique: FPMA6zpvO2q2B5DDV8wauA-1 X-Mimecast-MFC-AGG-ID: FPMA6zpvO2q2B5DDV8wauA_1750067490 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 v3 26/29] hw/arm/virt: Plug pcihp hotplug/hotunplug callbacks Date: Mon, 16 Jun 2025 11:46:55 +0200 Message-ID: <20250616094903.885753-27-eric.auger@redhat.com> In-Reply-To: <20250616094903.885753-1-eric.auger@redhat.com> References: <20250616094903.885753-1-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" Signed-off-by: Eric Auger Reviewed-by: Jonathan Cameron --- v2 -> v3: - fix cohabitation with virtio-mem-pci device and tested hotplug/unplug of this latter (Igor) --- hw/arm/virt.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 69 insertions(+), 3 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 8c882e0794..06b87e1050 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1747,6 +1747,22 @@ static void virt_build_smbios(VirtMachineState *vms) } } =20 +static AcpiPciHpState *get_acpi_pcihp_state(VirtMachineState *vms) +{ + AcpiGedState *acpi_ged_state; + AcpiPciHpState *pcihp_state; + + if (!vms->acpi_dev) { + return NULL; + } + acpi_ged_state =3D ACPI_GED(vms->acpi_dev); + pcihp_state =3D &acpi_ged_state->pcihp_state; + if (pcihp_state->use_acpi_hotplug_bridge) { + return pcihp_state; + } + return NULL; +} + static void virt_machine_done(Notifier *notifier, void *data) { @@ -2907,6 +2923,13 @@ static void virt_machine_device_pre_plug_cb(HotplugH= andler *hotplug_dev, { VirtMachineState *vms =3D VIRT_MACHINE(hotplug_dev); =20 + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + if (get_acpi_pcihp_state(vms)) { + acpi_pcihp_device_pre_plug_cb(HOTPLUG_HANDLER(vms->acpi_dev), + dev, errp); + } + } + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { virt_memory_pre_plug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { @@ -2961,6 +2984,15 @@ static void virt_machine_device_plug_cb(HotplugHandl= er *hotplug_dev, } } =20 + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + AcpiPciHpState *pcihp_state =3D get_acpi_pcihp_state(vms); + + if (pcihp_state) { + acpi_pcihp_device_plug_cb(HOTPLUG_HANDLER(vms->acpi_dev), + pcihp_state, dev, errp); + } + } + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { virt_memory_plug(hotplug_dev, dev, errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { @@ -3017,12 +3049,27 @@ out: static void virt_machine_device_unplug_request_cb(HotplugHandler *hotplug_= dev, DeviceState *dev, Error **errp) { + bool supported =3D false; + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { virt_dimm_unplug_request(hotplug_dev, dev, errp); + supported =3D true; } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_unplug_request(VIRTIO_MD_PCI(dev), MACHINE(hotplug_d= ev), errp); - } else { + supported =3D true; + } + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + VirtMachineState *vms =3D VIRT_MACHINE(hotplug_dev); + AcpiPciHpState *pcihp_state =3D get_acpi_pcihp_state(vms); + + if (pcihp_state) { + acpi_pcihp_device_unplug_request_cb(HOTPLUG_HANDLER(vms->acpi_= dev), + pcihp_state, dev, errp); + supported =3D true; + } + } + if (!supported) { error_setg(errp, "device unplug request for unsupported device" " type: %s", object_get_typename(OBJECT(dev))); } @@ -3031,11 +3078,27 @@ static void virt_machine_device_unplug_request_cb(H= otplugHandler *hotplug_dev, static void virt_machine_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + bool supported =3D false; + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { virt_dimm_unplug(hotplug_dev, dev, errp); + supported =3D true; } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_unplug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), err= p); - } else { + supported =3D true; + } + if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) { + VirtMachineState *vms =3D VIRT_MACHINE(hotplug_dev); + + AcpiPciHpState *pcihp_state =3D get_acpi_pcihp_state(vms); + + if (pcihp_state) { + acpi_pcihp_device_unplug_cb(HOTPLUG_HANDLER(vms->acpi_dev), + pcihp_state, dev, errp); + supported =3D true; + } + } + if (!supported) { error_setg(errp, "virt: device unplug for unsupported device" " type: %s", object_get_typename(OBJECT(dev))); } @@ -3045,11 +3108,14 @@ static HotplugHandler *virt_machine_get_hotplug_han= dler(MachineState *machine, DeviceState *dev) { MachineClass *mc =3D MACHINE_GET_CLASS(machine); + VirtMachineState *vms =3D VIRT_MACHINE(machine); =20 if (device_is_dynamic_sysbus(mc, dev) || object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI) || - object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) { + object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) || + (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE) && + get_acpi_pcihp_state(vms))) { return HOTPLUG_HANDLER(machine); } return NULL; --=20 2.49.0