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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| * QEMU Generic PCI Express Bridge Emulation | ||
| * | ||
| * Copyright (C) 2015 Alexander Graf <agraf@suse.de> | ||
| * | ||
| * Code loosely based on q35.c. | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
| #include "hw/hw.h" | ||
| #include "hw/pci-host/gpex.h" | ||
|
|
||
| /**************************************************************************** | ||
| * GPEX host | ||
| */ | ||
|
|
||
| static void gpex_set_irq(void *opaque, int irq_num, int level) | ||
| { | ||
| GPEXHost *s = opaque; | ||
|
|
||
| qemu_set_irq(s->irq, level); | ||
| } | ||
|
|
||
| static int gpex_map_irq(PCIDevice *pci_dev, int irq_num) | ||
| { | ||
| /* We only support one IRQ line so far */ | ||
| return 0; | ||
| } | ||
|
|
||
| static void gpex_host_realize(DeviceState *dev, Error **errp) | ||
| { | ||
| PCIHostState *pci = PCI_HOST_BRIDGE(dev); | ||
| GPEXHost *s = GPEX_HOST(dev); | ||
| SysBusDevice *sbd = SYS_BUS_DEVICE(dev); | ||
| PCIExpressHost *pex = PCIE_HOST_BRIDGE(dev); | ||
|
|
||
| pcie_host_mmcfg_init(pex, PCIE_MMCFG_SIZE_MIN); | ||
| memory_region_init(&s->io_mmio, OBJECT(s), "gpex_mmio", s->mmio_window_size); | ||
| memory_region_init(&s->io_ioport, OBJECT(s), "gpex_ioport", 64 * 1024); | ||
|
|
||
| sysbus_init_mmio(sbd, &pex->mmio); | ||
| sysbus_init_mmio(sbd, &s->io_mmio); | ||
| sysbus_init_mmio(sbd, &s->io_ioport); | ||
| sysbus_init_irq(sbd, &s->irq); | ||
|
|
||
| pci->bus = pci_register_bus(dev, "pcie.0", gpex_set_irq, gpex_map_irq, s, | ||
| &s->io_mmio, &s->io_ioport, 0, 1, TYPE_PCIE_BUS); | ||
|
|
||
| qdev_set_parent_bus(DEVICE(&s->gpex_root), BUS(pci->bus)); | ||
| qdev_init_nofail(DEVICE(&s->gpex_root)); | ||
| } | ||
|
|
||
| static const char *gpex_host_root_bus_path(PCIHostState *host_bridge, | ||
| PCIBus *rootbus) | ||
| { | ||
| return "0000:00"; | ||
| } | ||
|
|
||
| static Property gpex_root_props[] = { | ||
| DEFINE_PROP_UINT64("mmio_window_size", GPEXHost, mmio_window_size, 1ULL << 32), | ||
| DEFINE_PROP_END_OF_LIST(), | ||
| }; | ||
|
|
||
| static void gpex_host_class_init(ObjectClass *klass, void *data) | ||
| { | ||
| DeviceClass *dc = DEVICE_CLASS(klass); | ||
| PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass); | ||
|
|
||
| hc->root_bus_path = gpex_host_root_bus_path; | ||
| dc->realize = gpex_host_realize; | ||
| dc->props = gpex_root_props; | ||
| set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); | ||
| dc->fw_name = "pci"; | ||
| } | ||
|
|
||
| static void gpex_host_initfn(Object *obj) | ||
| { | ||
| GPEXHost *s = GPEX_HOST(obj); | ||
|
|
||
| object_initialize(&s->gpex_root, sizeof(s->gpex_root), TYPE_GPEX_ROOT_DEVICE); | ||
| object_property_add_child(OBJECT(s), "gpex_root", OBJECT(&s->gpex_root), NULL); | ||
| qdev_prop_set_uint32(DEVICE(&s->gpex_root), "addr", PCI_DEVFN(0, 0)); | ||
| qdev_prop_set_bit(DEVICE(&s->gpex_root), "multifunction", false); | ||
| } | ||
|
|
||
| static const TypeInfo gpex_host_info = { | ||
| .name = TYPE_GPEX_HOST, | ||
| .parent = TYPE_PCIE_HOST_BRIDGE, | ||
| .instance_size = sizeof(GPEXHost), | ||
| .instance_init = gpex_host_initfn, | ||
| .class_init = gpex_host_class_init, | ||
| }; | ||
|
|
||
| /**************************************************************************** | ||
| * GPEX Root D0:F0 | ||
| */ | ||
|
|
||
| static const VMStateDescription vmstate_gpex_root = { | ||
| .name = "gpex_root", | ||
| .version_id = 1, | ||
| .minimum_version_id = 1, | ||
| .fields = (VMStateField[]) { | ||
| VMSTATE_PCI_DEVICE(parent_obj, GPEXRootState), | ||
| VMSTATE_END_OF_LIST() | ||
| } | ||
| }; | ||
|
|
||
| static void gpex_root_class_init(ObjectClass *klass, void *data) | ||
| { | ||
| PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | ||
| DeviceClass *dc = DEVICE_CLASS(klass); | ||
|
|
||
| set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); | ||
| dc->desc = "Host bridge"; | ||
| dc->vmsd = &vmstate_gpex_root; | ||
| k->vendor_id = PCI_VENDOR_ID_REDHAT; | ||
| k->device_id = PCI_DEVICE_ID_REDHAT_BRIDGE; | ||
| k->revision = 0; | ||
| k->class_id = PCI_CLASS_BRIDGE_HOST; | ||
| /* | ||
| * PCI-facing part of the host bridge, not usable without the | ||
| * host-facing part, which can't be device_add'ed, yet. | ||
| */ | ||
| dc->cannot_instantiate_with_device_add_yet = true; | ||
| } | ||
|
|
||
| static const TypeInfo gpex_root_info = { | ||
| .name = TYPE_GPEX_ROOT_DEVICE, | ||
| .parent = TYPE_PCI_DEVICE, | ||
| .instance_size = sizeof(GPEXRootState), | ||
| .class_init = gpex_root_class_init, | ||
| }; | ||
|
|
||
| static void gpex_register(void) | ||
| { | ||
| type_register_static(&gpex_root_info); | ||
| type_register_static(&gpex_host_info); | ||
| } | ||
|
|
||
| type_init(gpex_register); |
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