[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH V6] pci: removed the is_express field since a uniform interface was inserted
On 01/16/2018 02:34 PM, 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() Reviewed-by: Marcel Apfelbaum <marcel@xxxxxxxxxx> Reviewed-by: Eduardo Habkost <ehabkost@xxxxxxxxxx> Signed-off-by: Yoni Bettan <ybettan@xxxxxxxxxx> --- V5 --> V6 : rebased on Michael S. Tsirkin pci branch as requested. V4 --> V5 : updated the patch to work with a new inserted device hw/xen/xen_pt.c V3 --> V4 : added a comment on the devices to explain why cap_present is set manually V2 --> V3 : turned the cap_present on in instance_init instead of a pre-reallize function that was created just for that purpose V1 --> V2 : V1 was asked to be ignored Hi Michael, can you please pick-up my patch? Thanks, Yoni 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.cindex 1ac356d3a5..c4c7a0a1c5 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1331,7 +1331,6 @@ 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 191398a3d5..16a9417a85 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 53b561f81f..044e312dc1 100644 --- a/hw/pci-host/xilinx-pcie.c +++ b/hw/pci-host/xilinx-pcie.c @@ -297,7 +297,6 @@ 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->realize = xilinx_pcie_root_realize; k->exit = pci_bridge_exitfn; diff --git a/hw/pci/pci.c b/hw/pci/pci.c index e8f9fc1c27..fa918184cf 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2005,11 +2005,15 @@ 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; 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.cindex 3e38e9e8aa..ba1afa3c1e 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 228e82b3fb..721beb5486 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 2c71295125..00e76e2aaa 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 f662f30370..9b7a960de1 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 15ced9648c..d8c18c7fa4 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; _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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