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6f338c34 AL |
1 | /* |
2 | * QEMU PCI hotplug support | |
3 | * | |
4 | * Copyright (c) 2004 Fabrice Bellard | |
5 | * | |
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: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
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. | |
23 | */ | |
24 | ||
25 | #include "hw.h" | |
26 | #include "boards.h" | |
27 | #include "pci.h" | |
28 | #include "net.h" | |
29 | #include "sysemu.h" | |
30 | #include "pc.h" | |
376253ec | 31 | #include "monitor.h" |
6f338c34 | 32 | #include "block_int.h" |
43b443b6 | 33 | #include "scsi.h" |
6f338c34 | 34 | #include "virtio-blk.h" |
c59c7ea9 | 35 | #include "qemu-config.h" |
7a344f7a | 36 | #include "qemu-objects.h" |
6f338c34 | 37 | |
ce88f890 | 38 | #if defined(TARGET_I386) |
1f5f6638 | 39 | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon, |
c59c7ea9 MM |
40 | const char *devaddr, |
41 | const char *opts_str) | |
6f338c34 | 42 | { |
c59c7ea9 | 43 | QemuOpts *opts; |
53e0d8af GH |
44 | PCIBus *bus; |
45 | int ret, devfn; | |
46 | ||
47 | bus = pci_get_bus_devfn(&devfn, devaddr); | |
48 | if (!bus) { | |
49 | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); | |
50 | return NULL; | |
51 | } | |
52 | if (!((BusState*)bus)->allow_hotplug) { | |
53 | monitor_printf(mon, "PCI bus doesn't support hotplug\n"); | |
54 | return NULL; | |
55 | } | |
6f338c34 | 56 | |
c59c7ea9 MM |
57 | opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
58 | if (!opts) { | |
59 | monitor_printf(mon, "parsing network options '%s' failed\n", | |
60 | opts_str ? opts_str : ""); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | qemu_opt_set(opts, "type", "nic"); | |
65 | ||
f6b134ac | 66 | ret = net_client_init(mon, opts, 0); |
eefb4091 | 67 | if (ret < 0) |
6f338c34 | 68 | return NULL; |
5607c388 MA |
69 | if (nd_table[ret].devaddr) { |
70 | monitor_printf(mon, "Parameter addr not supported\n"); | |
71 | return NULL; | |
72 | } | |
1f5f6638 | 73 | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
6f338c34 AL |
74 | } |
75 | ||
30d335d6 GH |
76 | static int scsi_hot_add(DeviceState *adapter, DriveInfo *dinfo, int printinfo) |
77 | { | |
78 | SCSIBus *scsibus; | |
79 | SCSIDevice *scsidev; | |
80 | ||
81 | scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); | |
82 | if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { | |
83 | qemu_error("Device is not a SCSI adapter\n"); | |
84 | return -1; | |
85 | } | |
86 | ||
87 | /* | |
88 | * drive_init() tries to find a default for dinfo->unit. Doesn't | |
89 | * work at all for hotplug though as we assign the device to a | |
90 | * specific bus instead of the first bus with spare scsi ids. | |
91 | * | |
92 | * Ditch the calculated value and reload from option string (if | |
93 | * specified). | |
94 | */ | |
95 | dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); | |
96 | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit); | |
11f4d7f4 | 97 | dinfo->unit = scsidev->id; |
30d335d6 GH |
98 | |
99 | if (printinfo) | |
100 | qemu_error("OK bus %d, unit %d\n", scsibus->busnr, scsidev->id); | |
101 | return 0; | |
102 | } | |
103 | ||
f18c16de | 104 | void drive_hot_add(Monitor *mon, const QDict *qdict) |
6f338c34 AL |
105 | { |
106 | int dom, pci_bus; | |
107 | unsigned slot; | |
751c6a17 | 108 | int type, bus; |
6f338c34 | 109 | PCIDevice *dev; |
4db49dc0 | 110 | DriveInfo *dinfo = NULL; |
f18c16de LC |
111 | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
112 | const char *opts = qdict_get_str(qdict, "opts"); | |
6f338c34 | 113 | |
751c6a17 GH |
114 | dinfo = add_init_drive(opts); |
115 | if (!dinfo) | |
4db49dc0 | 116 | goto err; |
751c6a17 | 117 | if (dinfo->devaddr) { |
c2cc47a4 | 118 | monitor_printf(mon, "Parameter addr not supported\n"); |
4db49dc0 | 119 | goto err; |
c2cc47a4 | 120 | } |
751c6a17 | 121 | type = dinfo->type; |
6f338c34 AL |
122 | bus = drive_get_max_bus (type); |
123 | ||
124 | switch (type) { | |
125 | case IF_SCSI: | |
4db49dc0 GH |
126 | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) { |
127 | goto err; | |
128 | } | |
c469e1dd | 129 | dev = pci_find_device(pci_find_root_bus(0), pci_bus, slot, 0); |
4db49dc0 GH |
130 | if (!dev) { |
131 | monitor_printf(mon, "no pci device with address %s\n", pci_addr); | |
132 | goto err; | |
133 | } | |
30d335d6 GH |
134 | if (scsi_hot_add(&dev->qdev, dinfo, 1) != 0) { |
135 | goto err; | |
136 | } | |
6f338c34 | 137 | break; |
7101174e GH |
138 | case IF_NONE: |
139 | monitor_printf(mon, "OK\n"); | |
140 | break; | |
6f338c34 | 141 | default: |
376253ec | 142 | monitor_printf(mon, "Can't hot-add drive to type %d\n", type); |
4db49dc0 | 143 | goto err; |
6f338c34 | 144 | } |
4db49dc0 | 145 | return; |
6f338c34 | 146 | |
4db49dc0 GH |
147 | err: |
148 | if (dinfo) | |
149 | drive_uninit(dinfo); | |
6f338c34 AL |
150 | return; |
151 | } | |
152 | ||
1f5f6638 MA |
153 | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, |
154 | const char *devaddr, | |
376253ec | 155 | const char *opts) |
6f338c34 | 156 | { |
1f5f6638 | 157 | PCIDevice *dev; |
06c79f4e | 158 | DriveInfo *dinfo = NULL; |
751c6a17 | 159 | int type = -1; |
6f338c34 | 160 | char buf[128]; |
49bd1458 MA |
161 | PCIBus *bus; |
162 | int devfn; | |
6f338c34 AL |
163 | |
164 | if (get_param_value(buf, sizeof(buf), "if", opts)) { | |
165 | if (!strcmp(buf, "scsi")) | |
166 | type = IF_SCSI; | |
167 | else if (!strcmp(buf, "virtio")) { | |
168 | type = IF_VIRTIO; | |
8707ecca AL |
169 | } else { |
170 | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf); | |
1f5f6638 | 171 | return NULL; |
6f338c34 AL |
172 | } |
173 | } else { | |
376253ec | 174 | monitor_printf(mon, "no if= specified\n"); |
1f5f6638 | 175 | return NULL; |
6f338c34 AL |
176 | } |
177 | ||
178 | if (get_param_value(buf, sizeof(buf), "file", opts)) { | |
751c6a17 GH |
179 | dinfo = add_init_drive(opts); |
180 | if (!dinfo) | |
1f5f6638 | 181 | return NULL; |
751c6a17 | 182 | if (dinfo->devaddr) { |
c2cc47a4 MA |
183 | monitor_printf(mon, "Parameter addr not supported\n"); |
184 | return NULL; | |
185 | } | |
7432ff5d BS |
186 | } else { |
187 | dinfo = NULL; | |
6f338c34 AL |
188 | } |
189 | ||
49bd1458 MA |
190 | bus = pci_get_bus_devfn(&devfn, devaddr); |
191 | if (!bus) { | |
192 | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); | |
193 | return NULL; | |
194 | } | |
53e0d8af GH |
195 | if (!((BusState*)bus)->allow_hotplug) { |
196 | monitor_printf(mon, "PCI bus doesn't support hotplug\n"); | |
197 | return NULL; | |
198 | } | |
49bd1458 | 199 | |
6f338c34 AL |
200 | switch (type) { |
201 | case IF_SCSI: | |
5b684b5a GH |
202 | if (!dinfo) { |
203 | monitor_printf(mon, "scsi requires a backing file/device.\n"); | |
204 | return NULL; | |
205 | } | |
499cf102 | 206 | dev = pci_create(bus, devfn, "lsi53c895a"); |
5b684b5a GH |
207 | if (qdev_init(&dev->qdev) < 0) |
208 | dev = NULL; | |
209 | if (dev) { | |
30d335d6 GH |
210 | if (scsi_hot_add(&dev->qdev, dinfo, 0) != 0) { |
211 | qdev_unplug(&dev->qdev); | |
212 | dev = NULL; | |
213 | } | |
5b684b5a | 214 | } |
6f338c34 AL |
215 | break; |
216 | case IF_VIRTIO: | |
7432ff5d BS |
217 | if (!dinfo) { |
218 | monitor_printf(mon, "virtio requires a backing file/device.\n"); | |
219 | return NULL; | |
220 | } | |
499cf102 | 221 | dev = pci_create(bus, devfn, "virtio-blk-pci"); |
d176c495 | 222 | qdev_prop_set_drive(&dev->qdev, "drive", dinfo); |
5b684b5a GH |
223 | if (qdev_init(&dev->qdev) < 0) |
224 | dev = NULL; | |
6f338c34 | 225 | break; |
1f5f6638 MA |
226 | default: |
227 | dev = NULL; | |
6f338c34 | 228 | } |
1f5f6638 | 229 | return dev; |
6f338c34 AL |
230 | } |
231 | ||
7a344f7a LC |
232 | void pci_device_hot_add_print(Monitor *mon, const QObject *data) |
233 | { | |
234 | QDict *qdict; | |
235 | ||
236 | assert(qobject_type(data) == QTYPE_QDICT); | |
237 | qdict = qobject_to_qdict(data); | |
238 | ||
239 | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n", | |
240 | (int) qdict_get_int(qdict, "domain"), | |
241 | (int) qdict_get_int(qdict, "bus"), | |
242 | (int) qdict_get_int(qdict, "slot"), | |
243 | (int) qdict_get_int(qdict, "function")); | |
244 | ||
245 | } | |
246 | ||
247 | /** | |
248 | * pci_device_hot_add(): Hot add a PCI device | |
249 | * | |
250 | * Return a QDict with the following device information: | |
251 | * | |
252 | * - "domain": domain number | |
253 | * - "bus": bus number | |
254 | * - "slot": slot number | |
255 | * - "function": function number | |
256 | * | |
257 | * Example: | |
258 | * | |
259 | * { "domain": 0, "bus": 0, "slot": 5, "function": 0 } | |
260 | */ | |
261 | void pci_device_hot_add(Monitor *mon, const QDict *qdict, QObject **ret_data) | |
6f338c34 AL |
262 | { |
263 | PCIDevice *dev = NULL; | |
1d4daa91 LC |
264 | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
265 | const char *type = qdict_get_str(qdict, "type"); | |
266 | const char *opts = qdict_get_try_str(qdict, "opts"); | |
6f338c34 | 267 | |
e9283f8b JK |
268 | /* strip legacy tag */ |
269 | if (!strncmp(pci_addr, "pci_addr=", 9)) { | |
270 | pci_addr += 9; | |
6f338c34 AL |
271 | } |
272 | ||
a62acdc0 JK |
273 | if (!opts) { |
274 | opts = ""; | |
275 | } | |
276 | ||
e9283f8b JK |
277 | if (!strcmp(pci_addr, "auto")) |
278 | pci_addr = NULL; | |
6f338c34 AL |
279 | |
280 | if (strcmp(type, "nic") == 0) | |
e9283f8b | 281 | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
6f338c34 | 282 | else if (strcmp(type, "storage") == 0) |
e9283f8b | 283 | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
6f338c34 | 284 | else |
376253ec | 285 | monitor_printf(mon, "invalid type: %s\n", type); |
6f338c34 AL |
286 | |
287 | if (dev) { | |
7a344f7a LC |
288 | *ret_data = |
289 | qobject_from_jsonf("{ 'domain': 0, 'bus': %d, 'slot': %d, " | |
290 | "'function': %d }", pci_bus_num(dev->bus), | |
291 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
292 | assert(*ret_data != NULL); | |
6f338c34 | 293 | } else |
376253ec | 294 | monitor_printf(mon, "failed to add %s\n", opts); |
6f338c34 AL |
295 | } |
296 | #endif | |
297 | ||
376253ec | 298 | void pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
6f338c34 AL |
299 | { |
300 | PCIDevice *d; | |
301 | int dom, bus; | |
302 | unsigned slot; | |
303 | ||
e9283f8b | 304 | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) { |
6f338c34 AL |
305 | return; |
306 | } | |
307 | ||
c469e1dd | 308 | d = pci_find_device(pci_find_root_bus(0), bus, slot, 0); |
6f338c34 | 309 | if (!d) { |
376253ec | 310 | monitor_printf(mon, "slot %d empty\n", slot); |
6f338c34 AL |
311 | return; |
312 | } | |
3f84865a | 313 | qdev_unplug(&d->qdev); |
6f338c34 AL |
314 | } |
315 | ||
6848d827 LC |
316 | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict, |
317 | QObject **ret_data) | |
38183186 | 318 | { |
d54908a5 | 319 | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr")); |
38183186 | 320 | } |