2 * Deprecated PCI hotplug interface support
3 * This covers the old pci_add / pci_del command, whereas the more general
4 * device_add / device_del commands are now preferred.
6 * Copyright (c) 2004 Fabrice Bellard
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #include "hw/boards.h"
29 #include "hw/pci/pci.h"
31 #include "hw/i386/pc.h"
32 #include "monitor/monitor.h"
33 #include "hw/scsi/scsi.h"
34 #include "hw/virtio/virtio-blk.h"
35 #include "qemu/config-file.h"
36 #include "sysemu/blockdev.h"
37 #include "qapi/error.h"
39 static int pci_read_devaddr(Monitor *mon, const char *addr,
40 int *busp, unsigned *slotp)
44 /* strip legacy tag */
45 if (!strncmp(addr, "pci_addr=", 9)) {
48 if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
49 monitor_printf(mon, "Invalid pci address\n");
53 monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
59 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
63 Error *local_err = NULL;
65 PCIBus *root = pci_find_primary_bus();
70 monitor_printf(mon, "no primary PCI bus (if there are multiple"
71 " PCI roots, you must use device_add instead)");
75 bus = pci_get_bus_devfn(&devfn, root, devaddr);
77 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
80 if (!((BusState*)bus)->allow_hotplug) {
81 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
85 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
90 qemu_opt_set(opts, "type", "nic");
92 ret = net_client_init(opts, 0, &local_err);
93 if (error_is_set(&local_err)) {
94 qerror_report_err(local_err);
95 error_free(local_err);
98 if (nd_table[ret].devaddr) {
99 monitor_printf(mon, "Parameter addr not supported\n");
102 return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
105 static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
106 DriveInfo *dinfo, int printinfo)
111 scsibus = (SCSIBus *)
112 object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
115 error_report("Device is not a SCSI adapter");
120 * drive_init() tries to find a default for dinfo->unit. Doesn't
121 * work at all for hotplug though as we assign the device to a
122 * specific bus instead of the first bus with spare scsi ids.
124 * Ditch the calculated value and reload from option string (if
127 dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
128 dinfo->bus = scsibus->busnr;
129 scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
130 false, -1, NULL, NULL);
134 dinfo->unit = scsidev->id;
137 monitor_printf(mon, "OK bus %d, unit %d\n",
138 scsibus->busnr, scsidev->id);
142 int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
146 PCIBus *root = pci_find_primary_bus();
148 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
150 switch (dinfo->type) {
153 monitor_printf(mon, "no primary PCI bus (if there are multiple"
154 " PCI roots, you must use device_add instead)");
157 if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
160 dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
162 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
165 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
170 monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
179 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
184 DriveInfo *dinfo = NULL;
187 PCIBus *root = pci_find_primary_bus();
191 if (get_param_value(buf, sizeof(buf), "if", opts)) {
192 if (!strcmp(buf, "scsi"))
194 else if (!strcmp(buf, "virtio")) {
197 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
201 monitor_printf(mon, "no if= specified\n");
205 if (get_param_value(buf, sizeof(buf), "file", opts)) {
206 dinfo = add_init_drive(opts);
209 if (dinfo->devaddr) {
210 monitor_printf(mon, "Parameter addr not supported\n");
218 monitor_printf(mon, "no primary PCI bus (if there are multiple"
219 " PCI roots, you must use device_add instead)");
222 bus = pci_get_bus_devfn(&devfn, root, devaddr);
224 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
227 if (!((BusState*)bus)->allow_hotplug) {
228 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
234 dev = pci_create(bus, devfn, "lsi53c895a");
235 if (qdev_init(&dev->qdev) < 0)
238 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
239 qdev_unplug(&dev->qdev, NULL);
246 monitor_printf(mon, "virtio requires a backing file/device.\n");
249 dev = pci_create(bus, devfn, "virtio-blk-pci");
250 if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
251 object_unparent(OBJECT(dev));
255 if (qdev_init(&dev->qdev) < 0)
264 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
266 PCIDevice *dev = NULL;
267 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
268 const char *type = qdict_get_str(qdict, "type");
269 const char *opts = qdict_get_try_str(qdict, "opts");
271 /* strip legacy tag */
272 if (!strncmp(pci_addr, "pci_addr=", 9)) {
280 if (!strcmp(pci_addr, "auto"))
283 if (strcmp(type, "nic") == 0) {
284 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
285 } else if (strcmp(type, "storage") == 0) {
286 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
288 monitor_printf(mon, "invalid type: %s\n", type);
292 monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
293 pci_root_bus_path(dev),
294 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
295 PCI_FUNC(dev->devfn));
297 monitor_printf(mon, "failed to add %s\n", opts);
300 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
302 PCIBus *root = pci_find_primary_bus();
306 Error *local_err = NULL;
309 monitor_printf(mon, "no primary PCI bus (if there are multiple"
310 " PCI roots, you must use device_del instead)");
314 if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
318 d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
320 monitor_printf(mon, "slot %d empty\n", slot);
324 qdev_unplug(&d->qdev, &local_err);
325 if (error_is_set(&local_err)) {
326 monitor_printf(mon, "%s\n", error_get_pretty(local_err));
327 error_free(local_err);
334 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
336 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));