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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH V5] pci: removed the is_express field since a uniform interface was inserted
On Mon, Dec 18, 2017 at 05:21:40PM +0200, Yoni Bettan wrote:
> according to Eduardo Habkost's commit fd3b02c889 all PCIEs now implement
> INTERFACE_PCIE_DEVICE so we don't need is_express field anymore.
>
> Devices that implements only INTERFACE_PCIE_DEVICE (is_express == 1)
> or
> devices that implements only INTERFACE_CONVENTIONAL_PCI_DEVICE (is_express ==
> 0)
> where not affected by the change.
>
> The only devices that were affected are those that are hybrid and also
> had (is_express == 1) - therefor only:
> - hw/vfio/pci.c
> - hw/usb/hcd-xhci.c
> - hw/xen/xen_pt.c
>
> For those 3 I made sure that QEMU_PCI_CAP_EXPRESS is on in instance_init()
>
> Signed-off-by: Yoni Bettan <ybettan@xxxxxxxxxx>
Thanks!
Could you pls rebase this on top of the latest pci branch?
There's been some conflicting changes so this no longer
applies cleanly.
> ---
> docs/pcie_pci_bridge.txt | 2 +-
> hw/block/nvme.c | 1 -
> hw/net/e1000e.c | 1 -
> hw/pci-bridge/pcie_pci_bridge.c | 1 -
> hw/pci-bridge/pcie_root_port.c | 1 -
> hw/pci-bridge/xio3130_downstream.c | 1 -
> hw/pci-bridge/xio3130_upstream.c | 1 -
> hw/pci-host/xilinx-pcie.c | 1 -
> hw/pci/pci.c | 8 ++++++--
> hw/scsi/megasas.c | 4 ----
> hw/usb/hcd-xhci.c | 9 ++++++++-
> hw/vfio/pci.c | 5 ++++-
> hw/xen/xen_pt.c | 9 ++++++++-
> include/hw/pci/pci.h | 3 ---
> 14 files changed, 27 insertions(+), 20 deletions(-)
>
> diff --git a/docs/pcie_pci_bridge.txt b/docs/pcie_pci_bridge.txt
> index 5a4203f97c..ab35ebf3ca 100644
> --- a/docs/pcie_pci_bridge.txt
> +++ b/docs/pcie_pci_bridge.txt
> @@ -110,5 +110,5 @@ To enable device hot-plug into the bridge on Linux
> there're 3 ways:
> Implementation
> ==============
> The PCIE-PCI bridge is based on PCI-PCI bridge, but also accumulates PCI
> Express
> -features as a PCI Express device (is_express=1).
> +features as a PCI Express device.
>
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 441e21ed1f..9325bc0911 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -1087,7 +1087,6 @@ static void nvme_class_init(ObjectClass *oc, void *data)
> pc->vendor_id = PCI_VENDOR_ID_INTEL;
> pc->device_id = 0x5845;
> pc->revision = 2;
> - pc->is_express = 1;
>
> set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
> dc->desc = "Non-Volatile Memory Express";
> diff --git a/hw/net/e1000e.c b/hw/net/e1000e.c
> index f1af279e8d..c360f0d8c9 100644
> --- a/hw/net/e1000e.c
> +++ b/hw/net/e1000e.c
> @@ -675,7 +675,6 @@ static void e1000e_class_init(ObjectClass *class, void
> *data)
> c->revision = 0;
> c->romfile = "efi-e1000e.rom";
> c->class_id = PCI_CLASS_NETWORK_ETHERNET;
> - c->is_express = 1;
>
> dc->desc = "Intel 82574L GbE Controller";
> dc->reset = e1000e_qdev_reset;
> diff --git a/hw/pci-bridge/pcie_pci_bridge.c b/hw/pci-bridge/pcie_pci_bridge.c
> index a4d827c99d..b7d9ebbec2 100644
> --- a/hw/pci-bridge/pcie_pci_bridge.c
> +++ b/hw/pci-bridge/pcie_pci_bridge.c
> @@ -169,7 +169,6 @@ static void pcie_pci_bridge_class_init(ObjectClass
> *klass, void *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
>
> - k->is_express = 1;
> k->is_bridge = 1;
> k->vendor_id = PCI_VENDOR_ID_REDHAT;
> k->device_id = PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE;
> diff --git a/hw/pci-bridge/pcie_root_port.c b/hw/pci-bridge/pcie_root_port.c
> index 9b6e4ce512..45f9e8cd4a 100644
> --- a/hw/pci-bridge/pcie_root_port.c
> +++ b/hw/pci-bridge/pcie_root_port.c
> @@ -145,7 +145,6 @@ static void rp_class_init(ObjectClass *klass, void *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>
> - k->is_express = 1;
> k->is_bridge = 1;
> k->config_write = rp_write_config;
> k->realize = rp_realize;
> diff --git a/hw/pci-bridge/xio3130_downstream.c
> b/hw/pci-bridge/xio3130_downstream.c
> index 1e09d2afb7..613a0d6bb7 100644
> --- a/hw/pci-bridge/xio3130_downstream.c
> +++ b/hw/pci-bridge/xio3130_downstream.c
> @@ -177,7 +177,6 @@ static void xio3130_downstream_class_init(ObjectClass
> *klass, void *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>
> - k->is_express = 1;
> k->is_bridge = 1;
> k->config_write = xio3130_downstream_write_config;
> k->realize = xio3130_downstream_realize;
> diff --git a/hw/pci-bridge/xio3130_upstream.c
> b/hw/pci-bridge/xio3130_upstream.c
> index 227997ce46..d4645bddee 100644
> --- a/hw/pci-bridge/xio3130_upstream.c
> +++ b/hw/pci-bridge/xio3130_upstream.c
> @@ -148,7 +148,6 @@ static void xio3130_upstream_class_init(ObjectClass
> *klass, void *data)
> DeviceClass *dc = DEVICE_CLASS(klass);
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
>
> - k->is_express = 1;
> k->is_bridge = 1;
> k->config_write = xio3130_upstream_write_config;
> k->realize = xio3130_upstream_realize;
> diff --git a/hw/pci-host/xilinx-pcie.c b/hw/pci-host/xilinx-pcie.c
> index 7659253090..a4ca3ba30f 100644
> --- a/hw/pci-host/xilinx-pcie.c
> +++ b/hw/pci-host/xilinx-pcie.c
> @@ -298,7 +298,6 @@ static void xilinx_pcie_root_class_init(ObjectClass
> *klass, void *data)
> k->device_id = 0x7021;
> k->revision = 0;
> k->class_id = PCI_CLASS_BRIDGE_HOST;
> - k->is_express = true;
> k->is_bridge = true;
> k->init = xilinx_pcie_root_init;
> k->exit = pci_bridge_exitfn;
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index b2d139bd9a..dc6faa46b9 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -2014,12 +2014,16 @@ static void pci_qdev_realize(DeviceState *qdev, Error
> **errp)
> {
> PCIDevice *pci_dev = (PCIDevice *)qdev;
> PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
> + ObjectClass *klass = OBJECT_CLASS(pc);
> Error *local_err = NULL;
> PCIBus *bus;
> bool is_default_rom;
>
> - /* initialize cap_present for pci_is_express() and pci_config_size() */
> - if (pc->is_express) {
> + /* initialize cap_present for pci_is_express() and pci_config_size(),
> + * Note that hybrid PCIs are not set automatically and need to manage
> + * QEMU_PCI_CAP_EXPRESS manually */
> + if (object_class_dynamic_cast(klass, INTERFACE_PCIE_DEVICE) &&
> + !object_class_dynamic_cast(klass, INTERFACE_CONVENTIONAL_PCI_DEVICE))
> {
> pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
> }
>
> diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
> index d5eae6239a..ee51feda59 100644
> --- a/hw/scsi/megasas.c
> +++ b/hw/scsi/megasas.c
> @@ -2447,7 +2447,6 @@ typedef struct MegasasInfo {
> uint16_t subsystem_id;
> int ioport_bar;
> int mmio_bar;
> - bool is_express;
> int osts;
> const VMStateDescription *vmsd;
> Property *props;
> @@ -2465,7 +2464,6 @@ static struct MegasasInfo megasas_devices[] = {
> .ioport_bar = 2,
> .mmio_bar = 0,
> .osts = MFI_1078_RM | 1,
> - .is_express = false,
> .vmsd = &vmstate_megasas_gen1,
> .props = megasas_properties_gen1,
> .interfaces = (InterfaceInfo[]) {
> @@ -2482,7 +2480,6 @@ static struct MegasasInfo megasas_devices[] = {
> .ioport_bar = 0,
> .mmio_bar = 1,
> .osts = MFI_GEN2_RM,
> - .is_express = true,
> .vmsd = &vmstate_megasas_gen2,
> .props = megasas_properties_gen2,
> .interfaces = (InterfaceInfo[]) {
> @@ -2506,7 +2503,6 @@ static void megasas_class_init(ObjectClass *oc, void
> *data)
> pc->subsystem_vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
> pc->subsystem_id = info->subsystem_id;
> pc->class_id = PCI_CLASS_STORAGE_RAID;
> - pc->is_express = info->is_express;
> e->mmio_bar = info->mmio_bar;
> e->ioport_bar = info->ioport_bar;
> e->osts = info->osts;
> diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
> index af3a9d88de..50a409f0f5 100644
> --- a/hw/usb/hcd-xhci.c
> +++ b/hw/usb/hcd-xhci.c
> @@ -3649,6 +3649,13 @@ static Property xhci_properties[] = {
> DEFINE_PROP_END_OF_LIST(),
> };
>
> +static void xhci_instance_init(Object *obj)
> +{
> + /* QEMU_PCI_CAP_EXPRESS initialization does not depend on QEMU command
> + * line, therefore, no need to wait to realize like other devices */
> + PCI_DEVICE(obj)->cap_present |= QEMU_PCI_CAP_EXPRESS;
> +}
> +
> static void xhci_class_init(ObjectClass *klass, void *data)
> {
> PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> @@ -3661,7 +3668,6 @@ static void xhci_class_init(ObjectClass *klass, void
> *data)
> k->realize = usb_xhci_realize;
> k->exit = usb_xhci_exit;
> k->class_id = PCI_CLASS_SERIAL_USB;
> - k->is_express = 1;
> }
>
> static const TypeInfo xhci_info = {
> @@ -3669,6 +3675,7 @@ static const TypeInfo xhci_info = {
> .parent = TYPE_PCI_DEVICE,
> .instance_size = sizeof(XHCIState),
> .class_init = xhci_class_init,
> + .instance_init = xhci_instance_init,
> .abstract = true,
> .interfaces = (InterfaceInfo[]) {
> { INTERFACE_PCIE_DEVICE },
> diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
> index c977ee327f..195732a000 100644
> --- a/hw/vfio/pci.c
> +++ b/hw/vfio/pci.c
> @@ -2972,6 +2972,10 @@ static void vfio_instance_init(Object *obj)
> vdev->host.function = ~0U;
>
> vdev->nv_gpudirect_clique = 0xFF;
> +
> + /* QEMU_PCI_CAP_EXPRESS initialization does not depend on QEMU command
> + * line, therefore, no need to wait to realize like other devices */
> + pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
> }
>
> static Property vfio_pci_dev_properties[] = {
> @@ -3026,7 +3030,6 @@ static void vfio_pci_dev_class_init(ObjectClass *klass,
> void *data)
> pdc->exit = vfio_exitfn;
> pdc->config_read = vfio_pci_read_config;
> pdc->config_write = vfio_pci_write_config;
> - pdc->is_express = 1; /* We might be */
> }
>
> static const TypeInfo vfio_pci_dev_info = {
> diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
> index d57c6d3485..6ce9bfe7fb 100644
> --- a/hw/xen/xen_pt.c
> +++ b/hw/xen/xen_pt.c
> @@ -937,6 +937,13 @@ static Property xen_pci_passthrough_properties[] = {
> DEFINE_PROP_END_OF_LIST(),
> };
>
> +static void xen_pci_passthrough_instance_init(Object *obj)
> +{
> + /* QEMU_PCI_CAP_EXPRESS initialization does not depend on QEMU command
> + * line, therefore, no need to wait to realize like other devices */
> + PCI_DEVICE(obj)->cap_present |= QEMU_PCI_CAP_EXPRESS;
> +}
> +
> static void xen_pci_passthrough_class_init(ObjectClass *klass, void *data)
> {
> DeviceClass *dc = DEVICE_CLASS(klass);
> @@ -946,7 +953,6 @@ static void xen_pci_passthrough_class_init(ObjectClass
> *klass, void *data)
> k->exit = xen_pt_unregister_device;
> k->config_read = xen_pt_pci_read_config;
> k->config_write = xen_pt_pci_write_config;
> - k->is_express = 1; /* We might be */
> set_bit(DEVICE_CATEGORY_MISC, dc->categories);
> dc->desc = "Assign an host PCI device with Xen";
> dc->props = xen_pci_passthrough_properties;
> @@ -965,6 +971,7 @@ static const TypeInfo xen_pci_passthrough_info = {
> .instance_size = sizeof(XenPCIPassthroughState),
> .instance_finalize = xen_pci_passthrough_finalize,
> .class_init = xen_pci_passthrough_class_init,
> + .instance_init = xen_pci_passthrough_instance_init,
> .interfaces = (InterfaceInfo[]) {
> { INTERFACE_CONVENTIONAL_PCI_DEVICE },
> { INTERFACE_PCIE_DEVICE },
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index 8d02a0a383..a27be85111 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -236,9 +236,6 @@ typedef struct PCIDeviceClass {
> */
> int is_bridge;
>
> - /* pcie stuff */
> - int is_express; /* is this device pci express? */
> -
> /* rom bar */
> const char *romfile;
> } PCIDeviceClass;
> --
> 2.14.3
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