| /* Copyright (c) Citrix Systems Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, |
| * with or without modification, are permitted provided |
| * that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the |
| * following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the |
| * following disclaimer in the documentation and/or other |
| * materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "hw/hw.h" |
| #include "hw/pci/pci.h" |
| #include "trace.h" |
| |
| #define TYPE_XEN_PV_DEVICE "xen-pvdevice" |
| |
| #define XEN_PV_DEVICE(obj) \ |
| OBJECT_CHECK(XenPVDevice, (obj), TYPE_XEN_PV_DEVICE) |
| |
| typedef struct XenPVDevice { |
| /*< private >*/ |
| PCIDevice parent_obj; |
| /*< public >*/ |
| uint16_t vendor_id; |
| uint16_t device_id; |
| uint8_t revision; |
| uint32_t size; |
| MemoryRegion mmio; |
| } XenPVDevice; |
| |
| static uint64_t xen_pv_mmio_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| trace_xen_pv_mmio_read(addr); |
| |
| return ~(uint64_t)0; |
| } |
| |
| static void xen_pv_mmio_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| trace_xen_pv_mmio_write(addr); |
| } |
| |
| static const MemoryRegionOps xen_pv_mmio_ops = { |
| .read = &xen_pv_mmio_read, |
| .write = &xen_pv_mmio_write, |
| .endianness = DEVICE_LITTLE_ENDIAN, |
| }; |
| |
| static void xen_pv_realize(PCIDevice *pci_dev, Error **errp) |
| { |
| XenPVDevice *d = XEN_PV_DEVICE(pci_dev); |
| uint8_t *pci_conf; |
| |
| /* device-id property must always be supplied */ |
| if (d->device_id == 0xffff) { |
| error_setg(errp, "Device ID invalid, it must always be supplied"); |
| return; |
| } |
| |
| pci_conf = pci_dev->config; |
| |
| pci_set_word(pci_conf + PCI_VENDOR_ID, d->vendor_id); |
| pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, d->vendor_id); |
| pci_set_word(pci_conf + PCI_DEVICE_ID, d->device_id); |
| pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, d->device_id); |
| pci_set_byte(pci_conf + PCI_REVISION_ID, d->revision); |
| |
| pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_MEMORY); |
| |
| pci_config_set_prog_interface(pci_conf, 0); |
| |
| pci_conf[PCI_INTERRUPT_PIN] = 1; |
| |
| memory_region_init_io(&d->mmio, NULL, &xen_pv_mmio_ops, d, |
| "mmio", d->size); |
| |
| pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, |
| &d->mmio); |
| } |
| |
| static Property xen_pv_props[] = { |
| DEFINE_PROP_UINT16("vendor-id", XenPVDevice, vendor_id, PCI_VENDOR_ID_XEN), |
| DEFINE_PROP_UINT16("device-id", XenPVDevice, device_id, 0xffff), |
| DEFINE_PROP_UINT8("revision", XenPVDevice, revision, 0x01), |
| DEFINE_PROP_UINT32("size", XenPVDevice, size, 0x400000), |
| DEFINE_PROP_END_OF_LIST() |
| }; |
| |
| static void xen_pv_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| |
| k->realize = xen_pv_realize; |
| k->class_id = PCI_CLASS_SYSTEM_OTHER; |
| dc->desc = "Xen PV Device"; |
| dc->props = xen_pv_props; |
| } |
| |
| static const TypeInfo xen_pv_type_info = { |
| .name = TYPE_XEN_PV_DEVICE, |
| .parent = TYPE_PCI_DEVICE, |
| .instance_size = sizeof(XenPVDevice), |
| .class_init = xen_pv_class_init, |
| .interfaces = (InterfaceInfo[]) { |
| { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |
| { }, |
| }, |
| }; |
| |
| static void xen_pv_register_types(void) |
| { |
| type_register_static(&xen_pv_type_info); |
| } |
| |
| type_init(xen_pv_register_types) |