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/block-backend.h"
37 #include "sysemu/blockdev.h"
38 #include "qapi/error.h"
40 static int pci_read_devaddr(Monitor *mon, const char *addr,
41 int *busp, unsigned *slotp)
45 /* strip legacy tag */
46 if (!strncmp(addr, "pci_addr=", 9)) {
49 if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
50 monitor_printf(mon, "Invalid pci address\n");
54 monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
60 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
64 Error *local_err = NULL;
66 PCIBus *root = pci_find_primary_bus();
71 monitor_printf(mon, "no primary PCI bus (if there are multiple"
72 " PCI roots, you must use device_add instead)");
76 bus = pci_get_bus_devfn(&devfn, root, devaddr);
78 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
81 if (!qbus_is_hotpluggable(BUS(bus))) {
82 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
86 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
91 qemu_opt_set(opts, "type", "nic");
93 ret = net_client_init(opts, 0, &local_err);
95 qerror_report_err(local_err);
96 error_free(local_err);
99 if (nd_table[ret].devaddr) {
100 monitor_printf(mon, "Parameter addr not supported\n");
103 return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
106 static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
107 DriveInfo *dinfo, int printinfo)
111 Error *local_err = NULL;
113 scsibus = (SCSIBus *)
114 object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
117 error_report("Device is not a SCSI adapter");
122 * drive_init() tries to find a default for dinfo->unit. Doesn't
123 * work at all for hotplug though as we assign the device to a
124 * specific bus instead of the first bus with spare scsi ids.
126 * Ditch the calculated value and reload from option string (if
129 dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
130 dinfo->bus = scsibus->busnr;
131 scsidev = scsi_bus_legacy_add_drive(scsibus,
132 blk_bs(blk_by_legacy_dinfo(dinfo)),
133 dinfo->unit, false, -1, NULL,
136 error_report("%s", error_get_pretty(local_err));
137 error_free(local_err);
140 dinfo->unit = scsidev->id;
143 monitor_printf(mon, "OK bus %d, unit %d\n",
144 scsibus->busnr, scsidev->id);
148 int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
152 PCIBus *root = pci_find_primary_bus();
154 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
156 switch (dinfo->type) {
159 monitor_printf(mon, "no primary PCI bus (if there are multiple"
160 " PCI roots, you must use device_add instead)");
163 if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
166 dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
168 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
171 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
176 monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
185 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
190 DriveInfo *dinfo = NULL;
193 PCIBus *root = pci_find_primary_bus();
197 if (get_param_value(buf, sizeof(buf), "if", opts)) {
198 if (!strcmp(buf, "scsi"))
200 else if (!strcmp(buf, "virtio")) {
203 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
207 monitor_printf(mon, "no if= specified\n");
211 if (get_param_value(buf, sizeof(buf), "file", opts)) {
212 dinfo = add_init_drive(opts);
215 if (dinfo->devaddr) {
216 monitor_printf(mon, "Parameter addr not supported\n");
224 monitor_printf(mon, "no primary PCI bus (if there are multiple"
225 " PCI roots, you must use device_add instead)");
228 bus = pci_get_bus_devfn(&devfn, root, devaddr);
230 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
233 if (!qbus_is_hotpluggable(BUS(bus))) {
234 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
240 dev = pci_create(bus, devfn, "lsi53c895a");
241 if (qdev_init(&dev->qdev) < 0)
244 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
245 qdev_unplug(&dev->qdev, NULL);
252 monitor_printf(mon, "virtio requires a backing file/device.\n");
255 dev = pci_create(bus, devfn, "virtio-blk-pci");
256 if (qdev_prop_set_drive(&dev->qdev, "drive",
257 blk_bs(blk_by_legacy_dinfo(dinfo))) < 0) {
258 object_unparent(OBJECT(dev));
262 if (qdev_init(&dev->qdev) < 0)
271 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
273 PCIDevice *dev = NULL;
274 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
275 const char *type = qdict_get_str(qdict, "type");
276 const char *opts = qdict_get_try_str(qdict, "opts");
278 /* strip legacy tag */
279 if (!strncmp(pci_addr, "pci_addr=", 9)) {
287 if (!strcmp(pci_addr, "auto"))
290 if (strcmp(type, "nic") == 0) {
291 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
292 } else if (strcmp(type, "storage") == 0) {
293 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
295 monitor_printf(mon, "invalid type: %s\n", type);
299 monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
300 pci_root_bus_path(dev),
301 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
302 PCI_FUNC(dev->devfn));
304 monitor_printf(mon, "failed to add %s\n", opts);
307 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
309 PCIBus *root = pci_find_primary_bus();
313 Error *local_err = NULL;
316 monitor_printf(mon, "no primary PCI bus (if there are multiple"
317 " PCI roots, you must use device_del instead)");
321 if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
325 d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
327 monitor_printf(mon, "slot %d empty\n", slot);
331 qdev_unplug(&d->qdev, &local_err);
333 monitor_printf(mon, "%s\n", error_get_pretty(local_err));
334 error_free(local_err);
341 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
343 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));