2 * QEMU PCI hotplug support
4 * Copyright (c) 2004 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
32 #include "virtio-blk.h"
33 #include "qemu-config.h"
36 #if defined(TARGET_I386)
37 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
45 bus = pci_get_bus_devfn(&devfn, devaddr);
47 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
50 if (!((BusState*)bus)->allow_hotplug) {
51 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
55 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
60 qemu_opt_set(opts, "type", "nic");
62 ret = net_client_init(mon, opts, 0);
65 if (nd_table[ret].devaddr) {
66 monitor_printf(mon, "Parameter addr not supported\n");
69 return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
72 static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
73 DriveInfo *dinfo, int printinfo)
78 scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
79 if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
80 error_report("Device is not a SCSI adapter");
85 * drive_init() tries to find a default for dinfo->unit. Doesn't
86 * work at all for hotplug though as we assign the device to a
87 * specific bus instead of the first bus with spare scsi ids.
89 * Ditch the calculated value and reload from option string (if
92 dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
93 dinfo->bus = scsibus->busnr;
94 scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
99 dinfo->unit = scsidev->id;
102 monitor_printf(mon, "OK bus %d, unit %d\n",
103 scsibus->busnr, scsidev->id);
107 int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
108 DriveInfo *dinfo, int type)
113 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
117 if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
120 dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
123 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
126 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
131 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
140 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
145 DriveInfo *dinfo = NULL;
151 if (get_param_value(buf, sizeof(buf), "if", opts)) {
152 if (!strcmp(buf, "scsi"))
154 else if (!strcmp(buf, "virtio")) {
157 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
161 monitor_printf(mon, "no if= specified\n");
165 if (get_param_value(buf, sizeof(buf), "file", opts)) {
166 dinfo = add_init_drive(opts);
169 if (dinfo->devaddr) {
170 monitor_printf(mon, "Parameter addr not supported\n");
177 bus = pci_get_bus_devfn(&devfn, devaddr);
179 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
182 if (!((BusState*)bus)->allow_hotplug) {
183 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
189 dev = pci_create(bus, devfn, "lsi53c895a");
190 if (qdev_init(&dev->qdev) < 0)
193 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
194 qdev_unplug(&dev->qdev);
201 monitor_printf(mon, "virtio requires a backing file/device.\n");
204 dev = pci_create(bus, devfn, "virtio-blk-pci");
205 if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
206 qdev_free(&dev->qdev);
210 if (qdev_init(&dev->qdev) < 0)
219 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
221 PCIDevice *dev = NULL;
222 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
223 const char *type = qdict_get_str(qdict, "type");
224 const char *opts = qdict_get_try_str(qdict, "opts");
226 /* strip legacy tag */
227 if (!strncmp(pci_addr, "pci_addr=", 9)) {
235 if (!strcmp(pci_addr, "auto"))
238 if (strcmp(type, "nic") == 0) {
239 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
240 } else if (strcmp(type, "storage") == 0) {
241 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
243 monitor_printf(mon, "invalid type: %s\n", type);
247 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
248 pci_find_domain(dev->bus),
249 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
250 PCI_FUNC(dev->devfn));
252 monitor_printf(mon, "failed to add %s\n", opts);
256 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
262 if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
266 d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
268 monitor_printf(mon, "slot %d empty\n", slot);
271 return qdev_unplug(&d->qdev);
274 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
276 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));