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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" | |
6f338c34 | 29 | #include "pc.h" |
376253ec | 30 | #include "monitor.h" |
43b443b6 | 31 | #include "scsi.h" |
6f338c34 | 32 | #include "virtio-blk.h" |
c59c7ea9 | 33 | #include "qemu-config.h" |
6f338c34 | 34 | |
ce88f890 | 35 | #if defined(TARGET_I386) |
1f5f6638 | 36 | static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon, |
c59c7ea9 MM |
37 | const char *devaddr, |
38 | const char *opts_str) | |
6f338c34 | 39 | { |
c59c7ea9 | 40 | QemuOpts *opts; |
53e0d8af GH |
41 | PCIBus *bus; |
42 | int ret, devfn; | |
43 | ||
44 | bus = pci_get_bus_devfn(&devfn, devaddr); | |
45 | if (!bus) { | |
46 | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); | |
47 | return NULL; | |
48 | } | |
49 | if (!((BusState*)bus)->allow_hotplug) { | |
50 | monitor_printf(mon, "PCI bus doesn't support hotplug\n"); | |
51 | return NULL; | |
52 | } | |
6f338c34 | 53 | |
3329f07b | 54 | opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
c59c7ea9 | 55 | if (!opts) { |
c59c7ea9 MM |
56 | return NULL; |
57 | } | |
58 | ||
59 | qemu_opt_set(opts, "type", "nic"); | |
60 | ||
f6b134ac | 61 | ret = net_client_init(mon, opts, 0); |
eefb4091 | 62 | if (ret < 0) |
6f338c34 | 63 | return NULL; |
5607c388 MA |
64 | if (nd_table[ret].devaddr) { |
65 | monitor_printf(mon, "Parameter addr not supported\n"); | |
66 | return NULL; | |
67 | } | |
1f5f6638 | 68 | return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
6f338c34 AL |
69 | } |
70 | ||
6fdb03d5 MA |
71 | static int scsi_hot_add(Monitor *mon, DeviceState *adapter, |
72 | DriveInfo *dinfo, int printinfo) | |
30d335d6 GH |
73 | { |
74 | SCSIBus *scsibus; | |
75 | SCSIDevice *scsidev; | |
76 | ||
77 | scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus)); | |
78 | if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) { | |
1ecda02b | 79 | error_report("Device is not a SCSI adapter"); |
30d335d6 GH |
80 | return -1; |
81 | } | |
82 | ||
83 | /* | |
84 | * drive_init() tries to find a default for dinfo->unit. Doesn't | |
85 | * work at all for hotplug though as we assign the device to a | |
86 | * specific bus instead of the first bus with spare scsi ids. | |
87 | * | |
88 | * Ditch the calculated value and reload from option string (if | |
89 | * specified). | |
90 | */ | |
91 | dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1); | |
f8b6cc00 | 92 | scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit); |
fa66b909 MA |
93 | if (!scsidev) { |
94 | return -1; | |
95 | } | |
11f4d7f4 | 96 | dinfo->unit = scsidev->id; |
30d335d6 GH |
97 | |
98 | if (printinfo) | |
6fdb03d5 MA |
99 | monitor_printf(mon, "OK bus %d, unit %d\n", |
100 | scsibus->busnr, scsidev->id); | |
30d335d6 GH |
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; | |
7f5b7d3e | 108 | int type; |
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 | |
123 | switch (type) { | |
124 | case IF_SCSI: | |
4db49dc0 GH |
125 | if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) { |
126 | goto err; | |
127 | } | |
e075e788 | 128 | dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0); |
4db49dc0 GH |
129 | if (!dev) { |
130 | monitor_printf(mon, "no pci device with address %s\n", pci_addr); | |
131 | goto err; | |
132 | } | |
6fdb03d5 | 133 | if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) { |
30d335d6 GH |
134 | goto err; |
135 | } | |
6f338c34 | 136 | break; |
7101174e GH |
137 | case IF_NONE: |
138 | monitor_printf(mon, "OK\n"); | |
139 | break; | |
6f338c34 | 140 | default: |
376253ec | 141 | monitor_printf(mon, "Can't hot-add drive to type %d\n", type); |
4db49dc0 | 142 | goto err; |
6f338c34 | 143 | } |
4db49dc0 | 144 | return; |
6f338c34 | 145 | |
4db49dc0 GH |
146 | err: |
147 | if (dinfo) | |
148 | drive_uninit(dinfo); | |
6f338c34 AL |
149 | return; |
150 | } | |
151 | ||
1f5f6638 MA |
152 | static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, |
153 | const char *devaddr, | |
376253ec | 154 | const char *opts) |
6f338c34 | 155 | { |
1f5f6638 | 156 | PCIDevice *dev; |
06c79f4e | 157 | DriveInfo *dinfo = NULL; |
751c6a17 | 158 | int type = -1; |
6f338c34 | 159 | char buf[128]; |
49bd1458 MA |
160 | PCIBus *bus; |
161 | int devfn; | |
6f338c34 AL |
162 | |
163 | if (get_param_value(buf, sizeof(buf), "if", opts)) { | |
164 | if (!strcmp(buf, "scsi")) | |
165 | type = IF_SCSI; | |
166 | else if (!strcmp(buf, "virtio")) { | |
167 | type = IF_VIRTIO; | |
8707ecca AL |
168 | } else { |
169 | monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf); | |
1f5f6638 | 170 | return NULL; |
6f338c34 AL |
171 | } |
172 | } else { | |
376253ec | 173 | monitor_printf(mon, "no if= specified\n"); |
1f5f6638 | 174 | return NULL; |
6f338c34 AL |
175 | } |
176 | ||
177 | if (get_param_value(buf, sizeof(buf), "file", opts)) { | |
751c6a17 GH |
178 | dinfo = add_init_drive(opts); |
179 | if (!dinfo) | |
1f5f6638 | 180 | return NULL; |
751c6a17 | 181 | if (dinfo->devaddr) { |
c2cc47a4 MA |
182 | monitor_printf(mon, "Parameter addr not supported\n"); |
183 | return NULL; | |
184 | } | |
7432ff5d BS |
185 | } else { |
186 | dinfo = NULL; | |
6f338c34 AL |
187 | } |
188 | ||
49bd1458 MA |
189 | bus = pci_get_bus_devfn(&devfn, devaddr); |
190 | if (!bus) { | |
191 | monitor_printf(mon, "Invalid PCI device address %s\n", devaddr); | |
192 | return NULL; | |
193 | } | |
53e0d8af GH |
194 | if (!((BusState*)bus)->allow_hotplug) { |
195 | monitor_printf(mon, "PCI bus doesn't support hotplug\n"); | |
196 | return NULL; | |
197 | } | |
49bd1458 | 198 | |
6f338c34 AL |
199 | switch (type) { |
200 | case IF_SCSI: | |
499cf102 | 201 | dev = pci_create(bus, devfn, "lsi53c895a"); |
5b684b5a GH |
202 | if (qdev_init(&dev->qdev) < 0) |
203 | dev = NULL; | |
ec7efac4 | 204 | if (dev && dinfo) { |
6fdb03d5 | 205 | if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) { |
30d335d6 GH |
206 | qdev_unplug(&dev->qdev); |
207 | dev = NULL; | |
208 | } | |
5b684b5a | 209 | } |
6f338c34 AL |
210 | break; |
211 | case IF_VIRTIO: | |
7432ff5d BS |
212 | if (!dinfo) { |
213 | monitor_printf(mon, "virtio requires a backing file/device.\n"); | |
214 | return NULL; | |
215 | } | |
499cf102 | 216 | dev = pci_create(bus, devfn, "virtio-blk-pci"); |
18846dee MA |
217 | if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) { |
218 | qdev_free(&dev->qdev); | |
219 | dev = NULL; | |
220 | break; | |
221 | } | |
5b684b5a GH |
222 | if (qdev_init(&dev->qdev) < 0) |
223 | dev = NULL; | |
6f338c34 | 224 | break; |
1f5f6638 MA |
225 | default: |
226 | dev = NULL; | |
6f338c34 | 227 | } |
1f5f6638 | 228 | return dev; |
6f338c34 AL |
229 | } |
230 | ||
6c6a58ae | 231 | void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
6f338c34 AL |
232 | { |
233 | PCIDevice *dev = NULL; | |
1d4daa91 LC |
234 | const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
235 | const char *type = qdict_get_str(qdict, "type"); | |
236 | const char *opts = qdict_get_try_str(qdict, "opts"); | |
6f338c34 | 237 | |
e9283f8b JK |
238 | /* strip legacy tag */ |
239 | if (!strncmp(pci_addr, "pci_addr=", 9)) { | |
240 | pci_addr += 9; | |
6f338c34 AL |
241 | } |
242 | ||
a62acdc0 JK |
243 | if (!opts) { |
244 | opts = ""; | |
245 | } | |
246 | ||
e9283f8b JK |
247 | if (!strcmp(pci_addr, "auto")) |
248 | pci_addr = NULL; | |
6f338c34 | 249 | |
395560c8 | 250 | if (strcmp(type, "nic") == 0) { |
e9283f8b | 251 | dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
395560c8 | 252 | } else if (strcmp(type, "storage") == 0) { |
e9283f8b | 253 | dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
395560c8 | 254 | } else { |
376253ec | 255 | monitor_printf(mon, "invalid type: %s\n", type); |
395560c8 | 256 | } |
6f338c34 AL |
257 | |
258 | if (dev) { | |
6c6a58ae | 259 | monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n", |
e075e788 IY |
260 | pci_find_domain(dev->bus), |
261 | pci_bus_num(dev->bus), PCI_SLOT(dev->devfn), | |
6c6a58ae MA |
262 | PCI_FUNC(dev->devfn)); |
263 | } else | |
376253ec | 264 | monitor_printf(mon, "failed to add %s\n", opts); |
6f338c34 AL |
265 | } |
266 | #endif | |
267 | ||
f2b07c92 | 268 | static int pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
6f338c34 AL |
269 | { |
270 | PCIDevice *d; | |
271 | int dom, bus; | |
272 | unsigned slot; | |
273 | ||
e9283f8b | 274 | if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) { |
053801bc | 275 | return -1; |
6f338c34 AL |
276 | } |
277 | ||
e075e788 | 278 | d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0); |
6f338c34 | 279 | if (!d) { |
376253ec | 280 | monitor_printf(mon, "slot %d empty\n", slot); |
053801bc | 281 | return -1; |
6f338c34 | 282 | } |
053801bc | 283 | return qdev_unplug(&d->qdev); |
6f338c34 AL |
284 | } |
285 | ||
b752daf0 | 286 | void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
38183186 | 287 | { |
b752daf0 | 288 | pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr")); |
38183186 | 289 | } |