diff options
Diffstat (limited to 'hw/xen')
| -rw-r--r-- | hw/xen/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/xen/xen_pvdevice.c | 131 |
2 files changed, 132 insertions, 1 deletions
diff --git a/hw/xen/Makefile.objs b/hw/xen/Makefile.objs index 20175602b6..ce640c61a5 100644 --- a/hw/xen/Makefile.objs +++ b/hw/xen/Makefile.objs @@ -1,6 +1,6 @@ # xen backend driver support common-obj-$(CONFIG_XEN_BACKEND) += xen_backend.o xen_devconfig.o -obj-$(CONFIG_XEN_I386) += xen_platform.o xen_apic.o +obj-$(CONFIG_XEN_I386) += xen_platform.o xen_apic.o xen_pvdevice.o obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_msi.o diff --git a/hw/xen/xen_pvdevice.c b/hw/xen/xen_pvdevice.c new file mode 100644 index 0000000000..1132c8934f --- /dev/null +++ b/hw/xen/xen_pvdevice.c @@ -0,0 +1,131 @@ +/* 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 "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 int xen_pv_init(PCIDevice *pci_dev) +{ + XenPVDevice *d = XEN_PV_DEVICE(pci_dev); + uint8_t *pci_conf; + + 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); + + return 0; +} + +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, PCI_DEVICE_ID_XEN_PVDEVICE), + 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->init = xen_pv_init; + 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, +}; + +static void xen_pv_register_types(void) +{ + type_register_static(&xen_pv_type_info); +} + +type_init(xen_pv_register_types) |