coroutine: add test-coroutine --benchmark-lifecycle
[qemu/stefanha.git] / hw / pci-hotplug.c
blobb59be2a5997cf3d63711d25e2a57c918661b58ca
1 /*
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
22 * THE SOFTWARE.
25 #include "hw.h"
26 #include "boards.h"
27 #include "pci.h"
28 #include "net.h"
29 #include "pc.h"
30 #include "monitor.h"
31 #include "scsi.h"
32 #include "virtio-blk.h"
33 #include "qemu-config.h"
34 #include "blockdev.h"
36 #if defined(TARGET_I386)
37 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
38 const char *devaddr,
39 const char *opts_str)
41 QemuOpts *opts;
42 PCIBus *bus;
43 int ret, devfn;
45 bus = pci_get_bus_devfn(&devfn, devaddr);
46 if (!bus) {
47 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
48 return NULL;
50 if (!((BusState*)bus)->allow_hotplug) {
51 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
52 return NULL;
55 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
56 if (!opts) {
57 return NULL;
60 qemu_opt_set(opts, "type", "nic");
62 ret = net_client_init(mon, opts, 0);
63 if (ret < 0)
64 return NULL;
65 if (nd_table[ret].devaddr) {
66 monitor_printf(mon, "Parameter addr not supported\n");
67 return NULL;
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)
75 SCSIBus *scsibus;
76 SCSIDevice *scsidev;
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");
81 return -1;
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
90 * specified).
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, false);
95 if (!scsidev) {
96 return -1;
98 dinfo->unit = scsidev->id;
100 if (printinfo)
101 monitor_printf(mon, "OK bus %d, unit %d\n",
102 scsibus->busnr, scsidev->id);
103 return 0;
106 void drive_hot_add(Monitor *mon, const QDict *qdict)
108 int dom, pci_bus;
109 unsigned slot;
110 int type;
111 PCIDevice *dev;
112 DriveInfo *dinfo = NULL;
113 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
114 const char *opts = qdict_get_str(qdict, "opts");
116 dinfo = add_init_drive(opts);
117 if (!dinfo)
118 goto err;
119 if (dinfo->devaddr) {
120 monitor_printf(mon, "Parameter addr not supported\n");
121 goto err;
123 type = dinfo->type;
125 switch (type) {
126 case IF_SCSI:
127 if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
128 goto err;
130 dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
131 PCI_DEVFN(slot, 0));
132 if (!dev) {
133 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
134 goto err;
136 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
137 goto err;
139 break;
140 case IF_NONE:
141 monitor_printf(mon, "OK\n");
142 break;
143 default:
144 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
145 goto err;
147 return;
149 err:
150 if (dinfo)
151 drive_put_ref(dinfo);
152 return;
155 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
156 const char *devaddr,
157 const char *opts)
159 PCIDevice *dev;
160 DriveInfo *dinfo = NULL;
161 int type = -1;
162 char buf[128];
163 PCIBus *bus;
164 int devfn;
166 if (get_param_value(buf, sizeof(buf), "if", opts)) {
167 if (!strcmp(buf, "scsi"))
168 type = IF_SCSI;
169 else if (!strcmp(buf, "virtio")) {
170 type = IF_VIRTIO;
171 } else {
172 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
173 return NULL;
175 } else {
176 monitor_printf(mon, "no if= specified\n");
177 return NULL;
180 if (get_param_value(buf, sizeof(buf), "file", opts)) {
181 dinfo = add_init_drive(opts);
182 if (!dinfo)
183 return NULL;
184 if (dinfo->devaddr) {
185 monitor_printf(mon, "Parameter addr not supported\n");
186 return NULL;
188 } else {
189 dinfo = NULL;
192 bus = pci_get_bus_devfn(&devfn, devaddr);
193 if (!bus) {
194 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
195 return NULL;
197 if (!((BusState*)bus)->allow_hotplug) {
198 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
199 return NULL;
202 switch (type) {
203 case IF_SCSI:
204 dev = pci_create(bus, devfn, "lsi53c895a");
205 if (qdev_init(&dev->qdev) < 0)
206 dev = NULL;
207 if (dev && dinfo) {
208 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
209 qdev_unplug(&dev->qdev);
210 dev = NULL;
213 break;
214 case IF_VIRTIO:
215 if (!dinfo) {
216 monitor_printf(mon, "virtio requires a backing file/device.\n");
217 return NULL;
219 dev = pci_create(bus, devfn, "virtio-blk-pci");
220 if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
221 qdev_free(&dev->qdev);
222 dev = NULL;
223 break;
225 if (qdev_init(&dev->qdev) < 0)
226 dev = NULL;
227 break;
228 default:
229 dev = NULL;
231 return dev;
234 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
236 PCIDevice *dev = NULL;
237 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
238 const char *type = qdict_get_str(qdict, "type");
239 const char *opts = qdict_get_try_str(qdict, "opts");
241 /* strip legacy tag */
242 if (!strncmp(pci_addr, "pci_addr=", 9)) {
243 pci_addr += 9;
246 if (!opts) {
247 opts = "";
250 if (!strcmp(pci_addr, "auto"))
251 pci_addr = NULL;
253 if (strcmp(type, "nic") == 0) {
254 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
255 } else if (strcmp(type, "storage") == 0) {
256 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
257 } else {
258 monitor_printf(mon, "invalid type: %s\n", type);
261 if (dev) {
262 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
263 pci_find_domain(dev->bus),
264 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
265 PCI_FUNC(dev->devfn));
266 } else
267 monitor_printf(mon, "failed to add %s\n", opts);
269 #endif
271 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
273 PCIDevice *d;
274 int dom, bus;
275 unsigned slot;
277 if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
278 return -1;
281 d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
282 if (!d) {
283 monitor_printf(mon, "slot %d empty\n", slot);
284 return -1;
286 return qdev_unplug(&d->qdev);
289 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
291 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));