| /* |
| * QEMU PCI hotplug support |
| * |
| * Copyright (c) 2004 Fabrice Bellard |
| * |
| * 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.h" |
| #include "boards.h" |
| #include "pci.h" |
| #include "net.h" |
| #include "pc.h" |
| #include "monitor.h" |
| #include "scsi.h" |
| #include "virtio-blk.h" |
| #include "qemu-config.h" |
| #include "blockdev.h" |
| |
| #if defined(TARGET_I386) |
| static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon, |
| const char *devaddr, |
| const char *opts_str) |
| { |
| QemuOpts *opts; |
| PCIBus *bus; |
| int ret, devfn; |
| |
| bus = pci_get_bus_devfn(&devfn, devaddr); |
| if (!bus) { |
| monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); |
| return NULL; |
| } |
| if (!((BusState*)bus)->allow_hotplug) { |
| monitor_printf(mon, "PCI bus doesn't support hotplug\n"); |
| return NULL; |
| } |
| |
| opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
| if (!opts) { |
| return NULL; |
| } |
| |
| qemu_opt_set(opts, "type", "nic"); |
| |
| ret = net_client_init(mon, opts, 0); |
| if (ret < 0) |
| return NULL; |
| if (nd_table[ret].devaddr) { |
| monitor_printf(mon, "Parameter addr not supported\n"); |
| return NULL; |
| } |
| return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
| } |
| |
| static int scsi_hot_add(Monitor *mon, DeviceState *adapter, |
| DriveInfo *dinfo, int printinfo) |
| { |
| SCSIBus *scsibus; |
| SCSIDevice *scsidev; |
| |
| scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); |
| if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { |
| error_report("Device is not a SCSI adapter"); |
| return -1; |
| } |
| |
| /* |
| * drive_init() tries to find a default for dinfo->unit. Doesn't |
| * work at all for hotplug though as we assign the device to a |
| * specific bus instead of the first bus with spare scsi ids. |
| * |
| * Ditch the calculated value and reload from option string (if |
| * specified). |
| */ |
| dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); |
| dinfo->bus = scsibus->busnr; |
| scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit, false); |
| if (!scsidev) { |
| return -1; |
| } |
| dinfo->unit = scsidev->id; |
| |
| if (printinfo) |
| monitor_printf(mon, "OK bus %d, unit %d\n", |
| scsibus->busnr, scsidev->id); |
| return 0; |
| } |
| |
| void drive_hot_add(Monitor *mon, const QDict *qdict) |
| { |
| int dom, pci_bus; |
| unsigned slot; |
| int type; |
| PCIDevice *dev; |
| DriveInfo *dinfo = NULL; |
| const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
| const char *opts = qdict_get_str(qdict, "opts"); |
| |
| dinfo = add_init_drive(opts); |
| if (!dinfo) |
| goto err; |
| if (dinfo->devaddr) { |
| monitor_printf(mon, "Parameter addr not supported\n"); |
| goto err; |
| } |
| type = dinfo->type; |
| |
| switch (type) { |
| case IF_SCSI: |
| if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) { |
| goto err; |
| } |
| dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0); |
| if (!dev) { |
| monitor_printf(mon, "no pci device with address %s\n", pci_addr); |
| goto err; |
| } |
| if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
| goto err; |
| } |
| break; |
| case IF_NONE: |
| monitor_printf(mon, "OK\n"); |
| break; |
| default: |
| monitor_printf(mon, "Can't hot-add drive to type %d\n", type); |
| goto err; |
| } |
| return; |
| |
| err: |
| if (dinfo) |
| drive_put_ref(dinfo); |
| return; |
| } |
| |
| static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, |
| const char *devaddr, |
| const char *opts) |
| { |
| PCIDevice *dev; |
| DriveInfo *dinfo = NULL; |
| int type = -1; |
| char buf[128]; |
| PCIBus *bus; |
| int devfn; |
| |
| if (get_param_value(buf, sizeof(buf), "if", opts)) { |
| if (!strcmp(buf, "scsi")) |
| type = IF_SCSI; |
| else if (!strcmp(buf, "virtio")) { |
| type = IF_VIRTIO; |
| } else { |
| monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf); |
| return NULL; |
| } |
| } else { |
| monitor_printf(mon, "no if= specified\n"); |
| return NULL; |
| } |
| |
| if (get_param_value(buf, sizeof(buf), "file", opts)) { |
| dinfo = add_init_drive(opts); |
| if (!dinfo) |
| return NULL; |
| if (dinfo->devaddr) { |
| monitor_printf(mon, "Parameter addr not supported\n"); |
| return NULL; |
| } |
| } else { |
| dinfo = NULL; |
| } |
| |
| bus = pci_get_bus_devfn(&devfn, devaddr); |
| if (!bus) { |
| monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); |
| return NULL; |
| } |
| if (!((BusState*)bus)->allow_hotplug) { |
| monitor_printf(mon, "PCI bus doesn't support hotplug\n"); |
| return NULL; |
| } |
| |
| switch (type) { |
| case IF_SCSI: |
| dev = pci_create(bus, devfn, "lsi53c895a"); |
| if (qdev_init(&dev->qdev) < 0) |
| dev = NULL; |
| if (dev && dinfo) { |
| if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
| qdev_unplug(&dev->qdev); |
| dev = NULL; |
| } |
| } |
| break; |
| case IF_VIRTIO: |
| if (!dinfo) { |
| monitor_printf(mon, "virtio requires a backing file/device.\n"); |
| return NULL; |
| } |
| dev = pci_create(bus, devfn, "virtio-blk-pci"); |
| if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
| qdev_free(&dev->qdev); |
| dev = NULL; |
| break; |
| } |
| if (qdev_init(&dev->qdev) < 0) |
| dev = NULL; |
| break; |
| default: |
| dev = NULL; |
| } |
| return dev; |
| } |
| |
| void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
| { |
| PCIDevice *dev = NULL; |
| const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
| const char *type = qdict_get_str(qdict, "type"); |
| const char *opts = qdict_get_try_str(qdict, "opts"); |
| |
| /* strip legacy tag */ |
| if (!strncmp(pci_addr, "pci_addr=", 9)) { |
| pci_addr += 9; |
| } |
| |
| if (!opts) { |
| opts = ""; |
| } |
| |
| if (!strcmp(pci_addr, "auto")) |
| pci_addr = NULL; |
| |
| if (strcmp(type, "nic") == 0) { |
| dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
| } else if (strcmp(type, "storage") == 0) { |
| dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
| } else { |
| monitor_printf(mon, "invalid type: %s\n", type); |
| } |
| |
| if (dev) { |
| monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n", |
| pci_find_domain(dev->bus), |
| pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), |
| PCI_FUNC(dev->devfn)); |
| } else |
| monitor_printf(mon, "failed to add %s\n", opts); |
| } |
| #endif |
| |
| static int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
| { |
| PCIDevice *d; |
| int dom, bus; |
| unsigned slot; |
| |
| if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) { |
| return -1; |
| } |
| |
| d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0); |
| if (!d) { |
| monitor_printf(mon, "slot %d empty\n", slot); |
| return -1; |
| } |
| return qdev_unplug(&d->qdev); |
| } |
| |
| void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
| { |
| pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr")); |
| } |
