PPC: e500: msync is 440 only, e500 has real sync
[qemu.git] / hw / pci-hotplug.c
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 "pc.h"
30 #include "monitor.h"
31 #include "scsi.h"
32 #include "virtio-blk.h"
33 #include "qemu-config.h"
34 #include "blockdev.h"
35
36 #if defined(TARGET_I386)
37 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
38 const char *devaddr,
39 const char *opts_str)
40 {
41 QemuOpts *opts;
42 PCIBus *bus;
43 int ret, devfn;
44
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;
49 }
50 if (!((BusState*)bus)->allow_hotplug) {
51 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
52 return NULL;
53 }
54
55 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
56 if (!opts) {
57 return NULL;
58 }
59
60 qemu_opt_set(opts, "type", "nic");
61
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;
68 }
69 return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
70 }
71
72 static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
73 DriveInfo *dinfo, int printinfo)
74 {
75 SCSIBus *scsibus;
76 SCSIDevice *scsidev;
77
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;
82 }
83
84 /*
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.
88 *
89 * Ditch the calculated value and reload from option string (if
90 * specified).
91 */
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,
95 false, -1);
96 if (!scsidev) {
97 return -1;
98 }
99 dinfo->unit = scsidev->id;
100
101 if (printinfo)
102 monitor_printf(mon, "OK bus %d, unit %d\n",
103 scsibus->busnr, scsidev->id);
104 return 0;
105 }
106
107 int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
108 DriveInfo *dinfo, int type)
109 {
110 int dom, pci_bus;
111 unsigned slot;
112 PCIDevice *dev;
113 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
114
115 switch (type) {
116 case IF_SCSI:
117 if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
118 goto err;
119 }
120 dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
121 PCI_DEVFN(slot, 0));
122 if (!dev) {
123 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
124 goto err;
125 }
126 if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
127 goto err;
128 }
129 break;
130 default:
131 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
132 goto err;
133 }
134
135 return 0;
136 err:
137 return -1;
138 }
139
140 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
141 const char *devaddr,
142 const char *opts)
143 {
144 PCIDevice *dev;
145 DriveInfo *dinfo = NULL;
146 int type = -1;
147 char buf[128];
148 PCIBus *bus;
149 int devfn;
150
151 if (get_param_value(buf, sizeof(buf), "if", opts)) {
152 if (!strcmp(buf, "scsi"))
153 type = IF_SCSI;
154 else if (!strcmp(buf, "virtio")) {
155 type = IF_VIRTIO;
156 } else {
157 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
158 return NULL;
159 }
160 } else {
161 monitor_printf(mon, "no if= specified\n");
162 return NULL;
163 }
164
165 if (get_param_value(buf, sizeof(buf), "file", opts)) {
166 dinfo = add_init_drive(opts);
167 if (!dinfo)
168 return NULL;
169 if (dinfo->devaddr) {
170 monitor_printf(mon, "Parameter addr not supported\n");
171 return NULL;
172 }
173 } else {
174 dinfo = NULL;
175 }
176
177 bus = pci_get_bus_devfn(&devfn, devaddr);
178 if (!bus) {
179 monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
180 return NULL;
181 }
182 if (!((BusState*)bus)->allow_hotplug) {
183 monitor_printf(mon, "PCI bus doesn't support hotplug\n");
184 return NULL;
185 }
186
187 switch (type) {
188 case IF_SCSI:
189 dev = pci_create(bus, devfn, "lsi53c895a");
190 if (qdev_init(&dev->qdev) < 0)
191 dev = NULL;
192 if (dev && dinfo) {
193 if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
194 qdev_unplug(&dev->qdev);
195 dev = NULL;
196 }
197 }
198 break;
199 case IF_VIRTIO:
200 if (!dinfo) {
201 monitor_printf(mon, "virtio requires a backing file/device.\n");
202 return NULL;
203 }
204 dev = pci_create(bus, devfn, "virtio-blk-pci");
205 if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
206 qdev_free(&dev->qdev);
207 dev = NULL;
208 break;
209 }
210 if (qdev_init(&dev->qdev) < 0)
211 dev = NULL;
212 break;
213 default:
214 dev = NULL;
215 }
216 return dev;
217 }
218
219 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
220 {
221 PCIDevice *dev = NULL;
222 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
223 const char *type = qdict_get_str(qdict, "type");
224 const char *opts = qdict_get_try_str(qdict, "opts");
225
226 /* strip legacy tag */
227 if (!strncmp(pci_addr, "pci_addr=", 9)) {
228 pci_addr += 9;
229 }
230
231 if (!opts) {
232 opts = "";
233 }
234
235 if (!strcmp(pci_addr, "auto"))
236 pci_addr = NULL;
237
238 if (strcmp(type, "nic") == 0) {
239 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
240 } else if (strcmp(type, "storage") == 0) {
241 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
242 } else {
243 monitor_printf(mon, "invalid type: %s\n", type);
244 }
245
246 if (dev) {
247 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
248 pci_find_domain(dev->bus),
249 pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
250 PCI_FUNC(dev->devfn));
251 } else
252 monitor_printf(mon, "failed to add %s\n", opts);
253 }
254 #endif
255
256 static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
257 {
258 PCIDevice *d;
259 int dom, bus;
260 unsigned slot;
261
262 if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
263 return -1;
264 }
265
266 d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
267 if (!d) {
268 monitor_printf(mon, "slot %d empty\n", slot);
269 return -1;
270 }
271 return qdev_unplug(&d->qdev);
272 }
273
274 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
275 {
276 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
277 }