From: Elena Ufimtseva <elena.ufimts...@oracle.com> Defines a PCI Device proxy object as a child of TYPE_PCI_DEVICE.
Signed-off-by: Elena Ufimtseva <elena.ufimts...@oracle.com> Signed-off-by: Jagannathan Raman <jag.ra...@oracle.com> Signed-off-by: John G Johnson <john.g.john...@oracle.com> --- MAINTAINERS | 2 ++ hw/pci/Makefile.objs | 1 + hw/pci/proxy.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/hw/pci/proxy.h | 26 ++++++++++++++++ 4 files changed, 109 insertions(+) create mode 100644 hw/pci/proxy.c create mode 100644 include/hw/pci/proxy.h diff --git a/MAINTAINERS b/MAINTAINERS index 2da7680..a8f097a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3051,6 +3051,8 @@ F: include/hw/i386/remote-obj.h F: hw/i386/remote-obj.c F: include/hw/i386/remote-memory.h F: hw/i386/remote-memory.c +F: hw/pci/proxy.c +F: include/hw/pci/proxy.h Build and test automation ------------------------- diff --git a/hw/pci/Makefile.objs b/hw/pci/Makefile.objs index c78f2fb..515dda5 100644 --- a/hw/pci/Makefile.objs +++ b/hw/pci/Makefile.objs @@ -12,3 +12,4 @@ common-obj-$(CONFIG_PCI_EXPRESS) += pcie_port.o pcie_host.o common-obj-$(call lnot,$(CONFIG_PCI)) += pci-stub.o common-obj-$(CONFIG_ALL) += pci-stub.o +obj-$(CONFIG_MPQEMU) += proxy.o diff --git a/hw/pci/proxy.c b/hw/pci/proxy.c new file mode 100644 index 0000000..014c1cb --- /dev/null +++ b/hw/pci/proxy.c @@ -0,0 +1,80 @@ +/* + * Copyright © 2018, 2020 Oracle and/or its affiliates. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" + +#include "hw/pci/proxy.h" +#include "hw/pci/pci.h" +#include "qapi/error.h" +#include "io/channel-util.h" +#include "hw/qdev-properties.h" +#include "monitor/monitor.h" + +static void proxy_set_socket(PCIProxyDev *pdev, int fd, Error **errp) +{ + pdev->ioc = qio_channel_new_fd(fd, errp); +} + +static Property proxy_properties[] = { + DEFINE_PROP_STRING("fd", PCIProxyDev, fd), + DEFINE_PROP_END_OF_LIST(), +}; + +static void pci_proxy_dev_realize(PCIDevice *device, Error **errp) +{ + PCIProxyDev *dev = PCI_PROXY_DEV(device); + int fd; + + if (dev->fd) { + fd = monitor_fd_param(cur_mon, dev->fd, errp); + if (fd == -1) { + error_prepend(errp, "proxy: unable to parse fd: "); + return; + } + proxy_set_socket(dev, fd, errp); + } else { + error_setg(errp, "fd parameter not specified for %s", + DEVICE(device)->id); + } +} + +static void pci_proxy_dev_exit(PCIDevice *pdev) +{ + PCIProxyDev *dev = PCI_PROXY_DEV(pdev); + + qio_channel_close(dev->ioc, NULL); +} + +static void pci_proxy_dev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = pci_proxy_dev_realize; + k->exit = pci_proxy_dev_exit; + device_class_set_props(dc, proxy_properties); +} + +static const TypeInfo pci_proxy_dev_type_info = { + .name = TYPE_PCI_PROXY_DEV, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(PCIProxyDev), + .class_init = pci_proxy_dev_class_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void pci_proxy_dev_register_types(void) +{ + type_register_static(&pci_proxy_dev_type_info); +} + +type_init(pci_proxy_dev_register_types) diff --git a/include/hw/pci/proxy.h b/include/hw/pci/proxy.h new file mode 100644 index 0000000..0a66ddc --- /dev/null +++ b/include/hw/pci/proxy.h @@ -0,0 +1,26 @@ +/* + * Copyright © 2018, 2020 Oracle and/or its affiliates. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef PROXY_H +#define PROXY_H + +#include "hw/pci/pci.h" +#include "io/channel.h" + +#define TYPE_PCI_PROXY_DEV "pci-proxy-dev" + +#define PCI_PROXY_DEV(obj) \ + OBJECT_CHECK(PCIProxyDev, (obj), TYPE_PCI_PROXY_DEV) + +typedef struct PCIProxyDev { + PCIDevice parent_dev; + char *fd; + QIOChannel *ioc; +} PCIProxyDev; + +#endif /* PROXY_H */ -- 1.8.3.1