root / hw / pci-hotplug.c @ 462a8bc6
History | View | Annotate | Download (8.3 kB)
1 | 6f338c34 | aliguori | /*
|
---|---|---|---|
2 | 6f338c34 | aliguori | * QEMU PCI hotplug support
|
3 | 6f338c34 | aliguori | *
|
4 | 6f338c34 | aliguori | * Copyright (c) 2004 Fabrice Bellard
|
5 | 6f338c34 | aliguori | *
|
6 | 6f338c34 | aliguori | * Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 | 6f338c34 | aliguori | * of this software and associated documentation files (the "Software"), to deal
|
8 | 6f338c34 | aliguori | * in the Software without restriction, including without limitation the rights
|
9 | 6f338c34 | aliguori | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 | 6f338c34 | aliguori | * copies of the Software, and to permit persons to whom the Software is
|
11 | 6f338c34 | aliguori | * furnished to do so, subject to the following conditions:
|
12 | 6f338c34 | aliguori | *
|
13 | 6f338c34 | aliguori | * The above copyright notice and this permission notice shall be included in
|
14 | 6f338c34 | aliguori | * all copies or substantial portions of the Software.
|
15 | 6f338c34 | aliguori | *
|
16 | 6f338c34 | aliguori | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 | 6f338c34 | aliguori | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 | 6f338c34 | aliguori | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 | 6f338c34 | aliguori | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 | 6f338c34 | aliguori | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 | 6f338c34 | aliguori | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 | 6f338c34 | aliguori | * THE SOFTWARE.
|
23 | 6f338c34 | aliguori | */
|
24 | 6f338c34 | aliguori | |
25 | 6f338c34 | aliguori | #include "hw.h" |
26 | 6f338c34 | aliguori | #include "boards.h" |
27 | 6f338c34 | aliguori | #include "pci.h" |
28 | 6f338c34 | aliguori | #include "net.h" |
29 | 6f338c34 | aliguori | #include "pc.h" |
30 | 376253ec | aliguori | #include "monitor.h" |
31 | 43b443b6 | Gerd Hoffmann | #include "scsi.h" |
32 | 6f338c34 | aliguori | #include "virtio-blk.h" |
33 | c59c7ea9 | Mark McLoughlin | #include "qemu-config.h" |
34 | 2446333c | Blue Swirl | #include "blockdev.h" |
35 | 6f338c34 | aliguori | |
36 | ce88f890 | Juan Quintela | #if defined(TARGET_I386)
|
37 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
|
38 | c59c7ea9 | Mark McLoughlin | const char *devaddr, |
39 | c59c7ea9 | Mark McLoughlin | const char *opts_str) |
40 | 6f338c34 | aliguori | { |
41 | c59c7ea9 | Mark McLoughlin | QemuOpts *opts; |
42 | 53e0d8af | Gerd Hoffmann | PCIBus *bus; |
43 | 53e0d8af | Gerd Hoffmann | int ret, devfn;
|
44 | 53e0d8af | Gerd Hoffmann | |
45 | 53e0d8af | Gerd Hoffmann | bus = pci_get_bus_devfn(&devfn, devaddr); |
46 | 53e0d8af | Gerd Hoffmann | if (!bus) {
|
47 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
|
48 | 53e0d8af | Gerd Hoffmann | return NULL; |
49 | 53e0d8af | Gerd Hoffmann | } |
50 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
|
51 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
|
52 | 53e0d8af | Gerd Hoffmann | return NULL; |
53 | 53e0d8af | Gerd Hoffmann | } |
54 | 6f338c34 | aliguori | |
55 | 3329f07b | Gerd Hoffmann | opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
56 | c59c7ea9 | Mark McLoughlin | if (!opts) {
|
57 | c59c7ea9 | Mark McLoughlin | return NULL; |
58 | c59c7ea9 | Mark McLoughlin | } |
59 | c59c7ea9 | Mark McLoughlin | |
60 | c59c7ea9 | Mark McLoughlin | qemu_opt_set(opts, "type", "nic"); |
61 | c59c7ea9 | Mark McLoughlin | |
62 | f6b134ac | Mark McLoughlin | ret = net_client_init(mon, opts, 0);
|
63 | eefb4091 | aliguori | if (ret < 0) |
64 | 6f338c34 | aliguori | return NULL; |
65 | 5607c388 | Markus Armbruster | if (nd_table[ret].devaddr) {
|
66 | 5607c388 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
|
67 | 5607c388 | Markus Armbruster | return NULL; |
68 | 5607c388 | Markus Armbruster | } |
69 | 1f5f6638 | Markus Armbruster | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
70 | 6f338c34 | aliguori | } |
71 | 6f338c34 | aliguori | |
72 | 6fdb03d5 | Markus Armbruster | static int scsi_hot_add(Monitor *mon, DeviceState *adapter, |
73 | 6fdb03d5 | Markus Armbruster | DriveInfo *dinfo, int printinfo)
|
74 | 30d335d6 | Gerd Hoffmann | { |
75 | 30d335d6 | Gerd Hoffmann | SCSIBus *scsibus; |
76 | 30d335d6 | Gerd Hoffmann | SCSIDevice *scsidev; |
77 | 30d335d6 | Gerd Hoffmann | |
78 | 30d335d6 | Gerd Hoffmann | scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); |
79 | 30d335d6 | Gerd Hoffmann | if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { |
80 | 1ecda02b | Markus Armbruster | error_report("Device is not a SCSI adapter");
|
81 | 30d335d6 | Gerd Hoffmann | return -1; |
82 | 30d335d6 | Gerd Hoffmann | } |
83 | 30d335d6 | Gerd Hoffmann | |
84 | 30d335d6 | Gerd Hoffmann | /*
|
85 | 30d335d6 | Gerd Hoffmann | * drive_init() tries to find a default for dinfo->unit. Doesn't
|
86 | 30d335d6 | Gerd Hoffmann | * work at all for hotplug though as we assign the device to a
|
87 | 30d335d6 | Gerd Hoffmann | * specific bus instead of the first bus with spare scsi ids.
|
88 | 30d335d6 | Gerd Hoffmann | *
|
89 | 30d335d6 | Gerd Hoffmann | * Ditch the calculated value and reload from option string (if
|
90 | 30d335d6 | Gerd Hoffmann | * specified).
|
91 | 30d335d6 | Gerd Hoffmann | */
|
92 | 30d335d6 | Gerd Hoffmann | dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); |
93 | 31e1ea3e | Markus Armbruster | dinfo->bus = scsibus->busnr; |
94 | 2d1fd261 | Stefan Hajnoczi | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit, false);
|
95 | fa66b909 | Markus Armbruster | if (!scsidev) {
|
96 | fa66b909 | Markus Armbruster | return -1; |
97 | fa66b909 | Markus Armbruster | } |
98 | 11f4d7f4 | Gerd Hoffmann | dinfo->unit = scsidev->id; |
99 | 30d335d6 | Gerd Hoffmann | |
100 | 30d335d6 | Gerd Hoffmann | if (printinfo)
|
101 | 6fdb03d5 | Markus Armbruster | monitor_printf(mon, "OK bus %d, unit %d\n",
|
102 | 6fdb03d5 | Markus Armbruster | scsibus->busnr, scsidev->id); |
103 | 30d335d6 | Gerd Hoffmann | return 0; |
104 | 30d335d6 | Gerd Hoffmann | } |
105 | 30d335d6 | Gerd Hoffmann | |
106 | f18c16de | Luiz Capitulino | void drive_hot_add(Monitor *mon, const QDict *qdict) |
107 | 6f338c34 | aliguori | { |
108 | 6f338c34 | aliguori | int dom, pci_bus;
|
109 | 6f338c34 | aliguori | unsigned slot;
|
110 | 7f5b7d3e | Blue Swirl | int type;
|
111 | 6f338c34 | aliguori | PCIDevice *dev; |
112 | 4db49dc0 | Gerd Hoffmann | DriveInfo *dinfo = NULL;
|
113 | f18c16de | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
114 | f18c16de | Luiz Capitulino | const char *opts = qdict_get_str(qdict, "opts"); |
115 | 6f338c34 | aliguori | |
116 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
117 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
|
118 | 4db49dc0 | Gerd Hoffmann | goto err;
|
119 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
|
120 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
|
121 | 4db49dc0 | Gerd Hoffmann | goto err;
|
122 | c2cc47a4 | Markus Armbruster | } |
123 | 751c6a17 | Gerd Hoffmann | type = dinfo->type; |
124 | 6f338c34 | aliguori | |
125 | 6f338c34 | aliguori | switch (type) {
|
126 | 6f338c34 | aliguori | case IF_SCSI:
|
127 | 4db49dc0 | Gerd Hoffmann | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
|
128 | 4db49dc0 | Gerd Hoffmann | goto err;
|
129 | 4db49dc0 | Gerd Hoffmann | } |
130 | 5256d8bf | Isaku Yamahata | dev = pci_find_device(pci_find_root_bus(dom), pci_bus, |
131 | 5256d8bf | Isaku Yamahata | PCI_DEVFN(slot, 0));
|
132 | 4db49dc0 | Gerd Hoffmann | if (!dev) {
|
133 | 4db49dc0 | Gerd Hoffmann | monitor_printf(mon, "no pci device with address %s\n", pci_addr);
|
134 | 4db49dc0 | Gerd Hoffmann | goto err;
|
135 | 4db49dc0 | Gerd Hoffmann | } |
136 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
137 | 30d335d6 | Gerd Hoffmann | goto err;
|
138 | 30d335d6 | Gerd Hoffmann | } |
139 | 6f338c34 | aliguori | break;
|
140 | 7101174e | Gerd Hoffmann | case IF_NONE:
|
141 | 7101174e | Gerd Hoffmann | monitor_printf(mon, "OK\n");
|
142 | 7101174e | Gerd Hoffmann | break;
|
143 | 6f338c34 | aliguori | default:
|
144 | 376253ec | aliguori | monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
|
145 | 4db49dc0 | Gerd Hoffmann | goto err;
|
146 | 6f338c34 | aliguori | } |
147 | 4db49dc0 | Gerd Hoffmann | return;
|
148 | 6f338c34 | aliguori | |
149 | 4db49dc0 | Gerd Hoffmann | err:
|
150 | 4db49dc0 | Gerd Hoffmann | if (dinfo)
|
151 | 84fb3925 | Marcelo Tosatti | drive_put_ref(dinfo); |
152 | 6f338c34 | aliguori | return;
|
153 | 6f338c34 | aliguori | } |
154 | 6f338c34 | aliguori | |
155 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
|
156 | 1f5f6638 | Markus Armbruster | const char *devaddr, |
157 | 376253ec | aliguori | const char *opts) |
158 | 6f338c34 | aliguori | { |
159 | 1f5f6638 | Markus Armbruster | PCIDevice *dev; |
160 | 06c79f4e | Sebastian Herbszt | DriveInfo *dinfo = NULL;
|
161 | 751c6a17 | Gerd Hoffmann | int type = -1; |
162 | 6f338c34 | aliguori | char buf[128]; |
163 | 49bd1458 | Markus Armbruster | PCIBus *bus; |
164 | 49bd1458 | Markus Armbruster | int devfn;
|
165 | 6f338c34 | aliguori | |
166 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "if", opts)) { |
167 | 6f338c34 | aliguori | if (!strcmp(buf, "scsi")) |
168 | 6f338c34 | aliguori | type = IF_SCSI; |
169 | 6f338c34 | aliguori | else if (!strcmp(buf, "virtio")) { |
170 | 6f338c34 | aliguori | type = IF_VIRTIO; |
171 | 8707ecca | aliguori | } else {
|
172 | 8707ecca | aliguori | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
|
173 | 1f5f6638 | Markus Armbruster | return NULL; |
174 | 6f338c34 | aliguori | } |
175 | 6f338c34 | aliguori | } else {
|
176 | 376253ec | aliguori | monitor_printf(mon, "no if= specified\n");
|
177 | 1f5f6638 | Markus Armbruster | return NULL; |
178 | 6f338c34 | aliguori | } |
179 | 6f338c34 | aliguori | |
180 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "file", opts)) { |
181 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
182 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
|
183 | 1f5f6638 | Markus Armbruster | return NULL; |
184 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
|
185 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
|
186 | c2cc47a4 | Markus Armbruster | return NULL; |
187 | c2cc47a4 | Markus Armbruster | } |
188 | 7432ff5d | Blue Swirl | } else {
|
189 | 7432ff5d | Blue Swirl | dinfo = NULL;
|
190 | 6f338c34 | aliguori | } |
191 | 6f338c34 | aliguori | |
192 | 49bd1458 | Markus Armbruster | bus = pci_get_bus_devfn(&devfn, devaddr); |
193 | 49bd1458 | Markus Armbruster | if (!bus) {
|
194 | 49bd1458 | Markus Armbruster | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
|
195 | 49bd1458 | Markus Armbruster | return NULL; |
196 | 49bd1458 | Markus Armbruster | } |
197 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
|
198 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
|
199 | 53e0d8af | Gerd Hoffmann | return NULL; |
200 | 53e0d8af | Gerd Hoffmann | } |
201 | 49bd1458 | Markus Armbruster | |
202 | 6f338c34 | aliguori | switch (type) {
|
203 | 6f338c34 | aliguori | case IF_SCSI:
|
204 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "lsi53c895a");
|
205 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
206 | 5b684b5a | Gerd Hoffmann | dev = NULL;
|
207 | ec7efac4 | Daniel P. Berrange | if (dev && dinfo) {
|
208 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
209 | 30d335d6 | Gerd Hoffmann | qdev_unplug(&dev->qdev); |
210 | 30d335d6 | Gerd Hoffmann | dev = NULL;
|
211 | 30d335d6 | Gerd Hoffmann | } |
212 | 5b684b5a | Gerd Hoffmann | } |
213 | 6f338c34 | aliguori | break;
|
214 | 6f338c34 | aliguori | case IF_VIRTIO:
|
215 | 7432ff5d | Blue Swirl | if (!dinfo) {
|
216 | 7432ff5d | Blue Swirl | monitor_printf(mon, "virtio requires a backing file/device.\n");
|
217 | 7432ff5d | Blue Swirl | return NULL; |
218 | 7432ff5d | Blue Swirl | } |
219 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "virtio-blk-pci");
|
220 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
221 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
222 | 18846dee | Markus Armbruster | dev = NULL;
|
223 | 18846dee | Markus Armbruster | break;
|
224 | 18846dee | Markus Armbruster | } |
225 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
226 | 5b684b5a | Gerd Hoffmann | dev = NULL;
|
227 | 6f338c34 | aliguori | break;
|
228 | 1f5f6638 | Markus Armbruster | default:
|
229 | 1f5f6638 | Markus Armbruster | dev = NULL;
|
230 | 6f338c34 | aliguori | } |
231 | 1f5f6638 | Markus Armbruster | return dev;
|
232 | 6f338c34 | aliguori | } |
233 | 6f338c34 | aliguori | |
234 | 6c6a58ae | Markus Armbruster | void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
235 | 6f338c34 | aliguori | { |
236 | 6f338c34 | aliguori | PCIDevice *dev = NULL;
|
237 | 1d4daa91 | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
238 | 1d4daa91 | Luiz Capitulino | const char *type = qdict_get_str(qdict, "type"); |
239 | 1d4daa91 | Luiz Capitulino | const char *opts = qdict_get_try_str(qdict, "opts"); |
240 | 6f338c34 | aliguori | |
241 | e9283f8b | Jan Kiszka | /* strip legacy tag */
|
242 | e9283f8b | Jan Kiszka | if (!strncmp(pci_addr, "pci_addr=", 9)) { |
243 | e9283f8b | Jan Kiszka | pci_addr += 9;
|
244 | 6f338c34 | aliguori | } |
245 | 6f338c34 | aliguori | |
246 | a62acdc0 | Jan Kiszka | if (!opts) {
|
247 | a62acdc0 | Jan Kiszka | opts = "";
|
248 | a62acdc0 | Jan Kiszka | } |
249 | a62acdc0 | Jan Kiszka | |
250 | e9283f8b | Jan Kiszka | if (!strcmp(pci_addr, "auto")) |
251 | e9283f8b | Jan Kiszka | pci_addr = NULL;
|
252 | 6f338c34 | aliguori | |
253 | 395560c8 | Luiz Capitulino | if (strcmp(type, "nic") == 0) { |
254 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
255 | 395560c8 | Luiz Capitulino | } else if (strcmp(type, "storage") == 0) { |
256 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
257 | 395560c8 | Luiz Capitulino | } else {
|
258 | 376253ec | aliguori | monitor_printf(mon, "invalid type: %s\n", type);
|
259 | 395560c8 | Luiz Capitulino | } |
260 | 6f338c34 | aliguori | |
261 | 6f338c34 | aliguori | if (dev) {
|
262 | 6c6a58ae | Markus Armbruster | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
|
263 | e075e788 | Isaku Yamahata | pci_find_domain(dev->bus), |
264 | e075e788 | Isaku Yamahata | pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), |
265 | 6c6a58ae | Markus Armbruster | PCI_FUNC(dev->devfn)); |
266 | 6c6a58ae | Markus Armbruster | } else
|
267 | 376253ec | aliguori | monitor_printf(mon, "failed to add %s\n", opts);
|
268 | 6f338c34 | aliguori | } |
269 | 6f338c34 | aliguori | #endif
|
270 | 6f338c34 | aliguori | |
271 | f2b07c92 | Isaku Yamahata | static int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
272 | 6f338c34 | aliguori | { |
273 | 6f338c34 | aliguori | PCIDevice *d; |
274 | 6f338c34 | aliguori | int dom, bus;
|
275 | 6f338c34 | aliguori | unsigned slot;
|
276 | 6f338c34 | aliguori | |
277 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
|
278 | 053801bc | Luiz Capitulino | return -1; |
279 | 6f338c34 | aliguori | } |
280 | 6f338c34 | aliguori | |
281 | 5256d8bf | Isaku Yamahata | d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
|
282 | 6f338c34 | aliguori | if (!d) {
|
283 | 376253ec | aliguori | monitor_printf(mon, "slot %d empty\n", slot);
|
284 | 053801bc | Luiz Capitulino | return -1; |
285 | 6f338c34 | aliguori | } |
286 | 053801bc | Luiz Capitulino | return qdev_unplug(&d->qdev);
|
287 | 6f338c34 | aliguori | } |
288 | 6f338c34 | aliguori | |
289 | b752daf0 | Markus Armbruster | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
290 | 38183186 | Luiz Capitulino | { |
291 | b752daf0 | Markus Armbruster | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
|
292 | 38183186 | Luiz Capitulino | } |