/* 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)