root / hw / pci-hotplug.c @ 4e4fa398
History | View | Annotate | Download (8 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 | ce4e7e46 | Paolo Bonzini | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit, |
95 | ce4e7e46 | Paolo Bonzini | false, -1); |
96 | fa66b909 | Markus Armbruster | if (!scsidev) {
|
97 | fa66b909 | Markus Armbruster | return -1; |
98 | fa66b909 | Markus Armbruster | } |
99 | 11f4d7f4 | Gerd Hoffmann | dinfo->unit = scsidev->id; |
100 | 30d335d6 | Gerd Hoffmann | |
101 | 30d335d6 | Gerd Hoffmann | if (printinfo)
|
102 | 6fdb03d5 | Markus Armbruster | monitor_printf(mon, "OK bus %d, unit %d\n",
|
103 | 6fdb03d5 | Markus Armbruster | scsibus->busnr, scsidev->id); |
104 | 30d335d6 | Gerd Hoffmann | return 0; |
105 | 30d335d6 | Gerd Hoffmann | } |
106 | 30d335d6 | Gerd Hoffmann | |
107 | dd97aa8a | Alexander Graf | int pci_drive_hot_add(Monitor *mon, const QDict *qdict, |
108 | dd97aa8a | Alexander Graf | DriveInfo *dinfo, int type)
|
109 | 6f338c34 | aliguori | { |
110 | 6f338c34 | aliguori | int dom, pci_bus;
|
111 | 6f338c34 | aliguori | unsigned slot;
|
112 | 6f338c34 | aliguori | PCIDevice *dev; |
113 | f18c16de | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
114 | 6f338c34 | aliguori | |
115 | 6f338c34 | aliguori | switch (type) {
|
116 | 6f338c34 | aliguori | case IF_SCSI:
|
117 | 4db49dc0 | Gerd Hoffmann | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
|
118 | 4db49dc0 | Gerd Hoffmann | goto err;
|
119 | 4db49dc0 | Gerd Hoffmann | } |
120 | 5256d8bf | Isaku Yamahata | dev = pci_find_device(pci_find_root_bus(dom), pci_bus, |
121 | 5256d8bf | Isaku Yamahata | PCI_DEVFN(slot, 0));
|
122 | 4db49dc0 | Gerd Hoffmann | if (!dev) {
|
123 | 4db49dc0 | Gerd Hoffmann | monitor_printf(mon, "no pci device with address %s\n", pci_addr);
|
124 | 4db49dc0 | Gerd Hoffmann | goto err;
|
125 | 4db49dc0 | Gerd Hoffmann | } |
126 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
127 | 30d335d6 | Gerd Hoffmann | goto err;
|
128 | 30d335d6 | Gerd Hoffmann | } |
129 | 6f338c34 | aliguori | break;
|
130 | 6f338c34 | aliguori | default:
|
131 | 376253ec | aliguori | monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
|
132 | 4db49dc0 | Gerd Hoffmann | goto err;
|
133 | 6f338c34 | aliguori | } |
134 | 6f338c34 | aliguori | |
135 | dd97aa8a | Alexander Graf | return 0; |
136 | 4db49dc0 | Gerd Hoffmann | err:
|
137 | dd97aa8a | Alexander Graf | return -1; |
138 | 6f338c34 | aliguori | } |
139 | 6f338c34 | aliguori | |
140 | 1f5f6638 | Markus Armbruster | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
|
141 | 1f5f6638 | Markus Armbruster | const char *devaddr, |
142 | 376253ec | aliguori | const char *opts) |
143 | 6f338c34 | aliguori | { |
144 | 1f5f6638 | Markus Armbruster | PCIDevice *dev; |
145 | 06c79f4e | Sebastian Herbszt | DriveInfo *dinfo = NULL;
|
146 | 751c6a17 | Gerd Hoffmann | int type = -1; |
147 | 6f338c34 | aliguori | char buf[128]; |
148 | 49bd1458 | Markus Armbruster | PCIBus *bus; |
149 | 49bd1458 | Markus Armbruster | int devfn;
|
150 | 6f338c34 | aliguori | |
151 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "if", opts)) { |
152 | 6f338c34 | aliguori | if (!strcmp(buf, "scsi")) |
153 | 6f338c34 | aliguori | type = IF_SCSI; |
154 | 6f338c34 | aliguori | else if (!strcmp(buf, "virtio")) { |
155 | 6f338c34 | aliguori | type = IF_VIRTIO; |
156 | 8707ecca | aliguori | } else {
|
157 | 8707ecca | aliguori | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
|
158 | 1f5f6638 | Markus Armbruster | return NULL; |
159 | 6f338c34 | aliguori | } |
160 | 6f338c34 | aliguori | } else {
|
161 | 376253ec | aliguori | monitor_printf(mon, "no if= specified\n");
|
162 | 1f5f6638 | Markus Armbruster | return NULL; |
163 | 6f338c34 | aliguori | } |
164 | 6f338c34 | aliguori | |
165 | 6f338c34 | aliguori | if (get_param_value(buf, sizeof(buf), "file", opts)) { |
166 | 751c6a17 | Gerd Hoffmann | dinfo = add_init_drive(opts); |
167 | 751c6a17 | Gerd Hoffmann | if (!dinfo)
|
168 | 1f5f6638 | Markus Armbruster | return NULL; |
169 | 751c6a17 | Gerd Hoffmann | if (dinfo->devaddr) {
|
170 | c2cc47a4 | Markus Armbruster | monitor_printf(mon, "Parameter addr not supported\n");
|
171 | c2cc47a4 | Markus Armbruster | return NULL; |
172 | c2cc47a4 | Markus Armbruster | } |
173 | 7432ff5d | Blue Swirl | } else {
|
174 | 7432ff5d | Blue Swirl | dinfo = NULL;
|
175 | 6f338c34 | aliguori | } |
176 | 6f338c34 | aliguori | |
177 | 49bd1458 | Markus Armbruster | bus = pci_get_bus_devfn(&devfn, devaddr); |
178 | 49bd1458 | Markus Armbruster | if (!bus) {
|
179 | 49bd1458 | Markus Armbruster | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
|
180 | 49bd1458 | Markus Armbruster | return NULL; |
181 | 49bd1458 | Markus Armbruster | } |
182 | 53e0d8af | Gerd Hoffmann | if (!((BusState*)bus)->allow_hotplug) {
|
183 | 53e0d8af | Gerd Hoffmann | monitor_printf(mon, "PCI bus doesn't support hotplug\n");
|
184 | 53e0d8af | Gerd Hoffmann | return NULL; |
185 | 53e0d8af | Gerd Hoffmann | } |
186 | 49bd1458 | Markus Armbruster | |
187 | 6f338c34 | aliguori | switch (type) {
|
188 | 6f338c34 | aliguori | case IF_SCSI:
|
189 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "lsi53c895a");
|
190 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
191 | 5b684b5a | Gerd Hoffmann | dev = NULL;
|
192 | ec7efac4 | Daniel P. Berrange | if (dev && dinfo) {
|
193 | 6fdb03d5 | Markus Armbruster | if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
194 | 30d335d6 | Gerd Hoffmann | qdev_unplug(&dev->qdev); |
195 | 30d335d6 | Gerd Hoffmann | dev = NULL;
|
196 | 30d335d6 | Gerd Hoffmann | } |
197 | 5b684b5a | Gerd Hoffmann | } |
198 | 6f338c34 | aliguori | break;
|
199 | 6f338c34 | aliguori | case IF_VIRTIO:
|
200 | 7432ff5d | Blue Swirl | if (!dinfo) {
|
201 | 7432ff5d | Blue Swirl | monitor_printf(mon, "virtio requires a backing file/device.\n");
|
202 | 7432ff5d | Blue Swirl | return NULL; |
203 | 7432ff5d | Blue Swirl | } |
204 | 499cf102 | Markus Armbruster | dev = pci_create(bus, devfn, "virtio-blk-pci");
|
205 | 18846dee | Markus Armbruster | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
206 | 18846dee | Markus Armbruster | qdev_free(&dev->qdev); |
207 | 18846dee | Markus Armbruster | dev = NULL;
|
208 | 18846dee | Markus Armbruster | break;
|
209 | 18846dee | Markus Armbruster | } |
210 | 5b684b5a | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) |
211 | 5b684b5a | Gerd Hoffmann | dev = NULL;
|
212 | 6f338c34 | aliguori | break;
|
213 | 1f5f6638 | Markus Armbruster | default:
|
214 | 1f5f6638 | Markus Armbruster | dev = NULL;
|
215 | 6f338c34 | aliguori | } |
216 | 1f5f6638 | Markus Armbruster | return dev;
|
217 | 6f338c34 | aliguori | } |
218 | 6f338c34 | aliguori | |
219 | 6c6a58ae | Markus Armbruster | void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
220 | 6f338c34 | aliguori | { |
221 | 6f338c34 | aliguori | PCIDevice *dev = NULL;
|
222 | 1d4daa91 | Luiz Capitulino | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
223 | 1d4daa91 | Luiz Capitulino | const char *type = qdict_get_str(qdict, "type"); |
224 | 1d4daa91 | Luiz Capitulino | const char *opts = qdict_get_try_str(qdict, "opts"); |
225 | 6f338c34 | aliguori | |
226 | e9283f8b | Jan Kiszka | /* strip legacy tag */
|
227 | e9283f8b | Jan Kiszka | if (!strncmp(pci_addr, "pci_addr=", 9)) { |
228 | e9283f8b | Jan Kiszka | pci_addr += 9;
|
229 | 6f338c34 | aliguori | } |
230 | 6f338c34 | aliguori | |
231 | a62acdc0 | Jan Kiszka | if (!opts) {
|
232 | a62acdc0 | Jan Kiszka | opts = "";
|
233 | a62acdc0 | Jan Kiszka | } |
234 | a62acdc0 | Jan Kiszka | |
235 | e9283f8b | Jan Kiszka | if (!strcmp(pci_addr, "auto")) |
236 | e9283f8b | Jan Kiszka | pci_addr = NULL;
|
237 | 6f338c34 | aliguori | |
238 | 395560c8 | Luiz Capitulino | if (strcmp(type, "nic") == 0) { |
239 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
240 | 395560c8 | Luiz Capitulino | } else if (strcmp(type, "storage") == 0) { |
241 | e9283f8b | Jan Kiszka | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
242 | 395560c8 | Luiz Capitulino | } else {
|
243 | 376253ec | aliguori | monitor_printf(mon, "invalid type: %s\n", type);
|
244 | 395560c8 | Luiz Capitulino | } |
245 | 6f338c34 | aliguori | |
246 | 6f338c34 | aliguori | if (dev) {
|
247 | 6c6a58ae | Markus Armbruster | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
|
248 | e075e788 | Isaku Yamahata | pci_find_domain(dev->bus), |
249 | e075e788 | Isaku Yamahata | pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), |
250 | 6c6a58ae | Markus Armbruster | PCI_FUNC(dev->devfn)); |
251 | 6c6a58ae | Markus Armbruster | } else
|
252 | 376253ec | aliguori | monitor_printf(mon, "failed to add %s\n", opts);
|
253 | 6f338c34 | aliguori | } |
254 | 6f338c34 | aliguori | #endif
|
255 | 6f338c34 | aliguori | |
256 | f2b07c92 | Isaku Yamahata | static int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
257 | 6f338c34 | aliguori | { |
258 | 6f338c34 | aliguori | PCIDevice *d; |
259 | 6f338c34 | aliguori | int dom, bus;
|
260 | 6f338c34 | aliguori | unsigned slot;
|
261 | 6f338c34 | aliguori | |
262 | e9283f8b | Jan Kiszka | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
|
263 | 053801bc | Luiz Capitulino | return -1; |
264 | 6f338c34 | aliguori | } |
265 | 6f338c34 | aliguori | |
266 | 5256d8bf | Isaku Yamahata | d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
|
267 | 6f338c34 | aliguori | if (!d) {
|
268 | 376253ec | aliguori | monitor_printf(mon, "slot %d empty\n", slot);
|
269 | 053801bc | Luiz Capitulino | return -1; |
270 | 6f338c34 | aliguori | } |
271 | 053801bc | Luiz Capitulino | return qdev_unplug(&d->qdev);
|
272 | 6f338c34 | aliguori | } |
273 | 6f338c34 | aliguori | |
274 | b752daf0 | Markus Armbruster | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
275 | 38183186 | Luiz Capitulino | { |
276 | b752daf0 | Markus Armbruster | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
|
277 | 38183186 | Luiz Capitulino | } |