root / hw / pci-hotplug.c @ ef845c3b
History | View | Annotate | Download (7.1 kB)
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" |
31 |
#include "monitor.h" |
32 |
#include "block_int.h" |
33 |
#include "scsi-disk.h" |
34 |
#include "virtio-blk.h" |
35 |
#include "qemu-config.h" |
36 |
|
37 |
#if defined(TARGET_I386)
|
38 |
static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
|
39 |
const char *devaddr, |
40 |
const char *opts_str) |
41 |
{ |
42 |
QemuOpts *opts; |
43 |
int ret;
|
44 |
|
45 |
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
46 |
if (!opts) {
|
47 |
monitor_printf(mon, "parsing network options '%s' failed\n",
|
48 |
opts_str ? opts_str : "");
|
49 |
return NULL; |
50 |
} |
51 |
|
52 |
qemu_opt_set(opts, "type", "nic"); |
53 |
|
54 |
ret = net_client_init(mon, opts, 0);
|
55 |
if (ret < 0) |
56 |
return NULL; |
57 |
if (nd_table[ret].devaddr) {
|
58 |
monitor_printf(mon, "Parameter addr not supported\n");
|
59 |
return NULL; |
60 |
} |
61 |
return pci_nic_init(&nd_table[ret], "rtl8139", devaddr); |
62 |
} |
63 |
|
64 |
void drive_hot_add(Monitor *mon, const QDict *qdict) |
65 |
{ |
66 |
int dom, pci_bus;
|
67 |
unsigned slot;
|
68 |
int type, bus;
|
69 |
PCIDevice *dev; |
70 |
DriveInfo *dinfo = NULL;
|
71 |
const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
72 |
const char *opts = qdict_get_str(qdict, "opts"); |
73 |
BusState *scsibus; |
74 |
|
75 |
dinfo = add_init_drive(opts); |
76 |
if (!dinfo)
|
77 |
goto err;
|
78 |
if (dinfo->devaddr) {
|
79 |
monitor_printf(mon, "Parameter addr not supported\n");
|
80 |
goto err;
|
81 |
} |
82 |
type = dinfo->type; |
83 |
bus = drive_get_max_bus (type); |
84 |
|
85 |
switch (type) {
|
86 |
case IF_SCSI:
|
87 |
if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
|
88 |
goto err;
|
89 |
} |
90 |
dev = pci_find_device(pci_bus, slot, 0);
|
91 |
if (!dev) {
|
92 |
monitor_printf(mon, "no pci device with address %s\n", pci_addr);
|
93 |
goto err;
|
94 |
} |
95 |
scsibus = QLIST_FIRST(&dev->qdev.child_bus); |
96 |
scsi_bus_legacy_add_drive(DO_UPCAST(SCSIBus, qbus, scsibus), |
97 |
dinfo, dinfo->unit); |
98 |
monitor_printf(mon, "OK bus %d, unit %d\n",
|
99 |
dinfo->bus, |
100 |
dinfo->unit); |
101 |
break;
|
102 |
case IF_NONE:
|
103 |
monitor_printf(mon, "OK\n");
|
104 |
break;
|
105 |
default:
|
106 |
monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
|
107 |
goto err;
|
108 |
} |
109 |
return;
|
110 |
|
111 |
err:
|
112 |
if (dinfo)
|
113 |
drive_uninit(dinfo); |
114 |
return;
|
115 |
} |
116 |
|
117 |
static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
|
118 |
const char *devaddr, |
119 |
const char *opts) |
120 |
{ |
121 |
PCIDevice *dev; |
122 |
DriveInfo *dinfo = NULL;
|
123 |
int type = -1; |
124 |
char buf[128]; |
125 |
PCIBus *bus; |
126 |
int devfn;
|
127 |
|
128 |
if (get_param_value(buf, sizeof(buf), "if", opts)) { |
129 |
if (!strcmp(buf, "scsi")) |
130 |
type = IF_SCSI; |
131 |
else if (!strcmp(buf, "virtio")) { |
132 |
type = IF_VIRTIO; |
133 |
} else {
|
134 |
monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
|
135 |
return NULL; |
136 |
} |
137 |
} else {
|
138 |
monitor_printf(mon, "no if= specified\n");
|
139 |
return NULL; |
140 |
} |
141 |
|
142 |
if (get_param_value(buf, sizeof(buf), "file", opts)) { |
143 |
dinfo = add_init_drive(opts); |
144 |
if (!dinfo)
|
145 |
return NULL; |
146 |
if (dinfo->devaddr) {
|
147 |
monitor_printf(mon, "Parameter addr not supported\n");
|
148 |
return NULL; |
149 |
} |
150 |
} else {
|
151 |
dinfo = NULL;
|
152 |
} |
153 |
|
154 |
bus = pci_get_bus_devfn(&devfn, devaddr); |
155 |
if (!bus) {
|
156 |
monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
|
157 |
return NULL; |
158 |
} |
159 |
|
160 |
switch (type) {
|
161 |
case IF_SCSI:
|
162 |
dev = pci_create(bus, devfn, "lsi53c895a");
|
163 |
break;
|
164 |
case IF_VIRTIO:
|
165 |
if (!dinfo) {
|
166 |
monitor_printf(mon, "virtio requires a backing file/device.\n");
|
167 |
return NULL; |
168 |
} |
169 |
dev = pci_create(bus, devfn, "virtio-blk-pci");
|
170 |
qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
|
171 |
break;
|
172 |
default:
|
173 |
dev = NULL;
|
174 |
} |
175 |
if (!dev || qdev_init(&dev->qdev) < 0) |
176 |
return NULL; |
177 |
return dev;
|
178 |
} |
179 |
|
180 |
void pci_device_hot_add(Monitor *mon, const QDict *qdict) |
181 |
{ |
182 |
PCIDevice *dev = NULL;
|
183 |
const char *pci_addr = qdict_get_str(qdict, "pci_addr"); |
184 |
const char *type = qdict_get_str(qdict, "type"); |
185 |
const char *opts = qdict_get_try_str(qdict, "opts"); |
186 |
|
187 |
/* strip legacy tag */
|
188 |
if (!strncmp(pci_addr, "pci_addr=", 9)) { |
189 |
pci_addr += 9;
|
190 |
} |
191 |
|
192 |
if (!opts) {
|
193 |
opts = "";
|
194 |
} |
195 |
|
196 |
if (!strcmp(pci_addr, "auto")) |
197 |
pci_addr = NULL;
|
198 |
|
199 |
if (strcmp(type, "nic") == 0) |
200 |
dev = qemu_pci_hot_add_nic(mon, pci_addr, opts); |
201 |
else if (strcmp(type, "storage") == 0) |
202 |
dev = qemu_pci_hot_add_storage(mon, pci_addr, opts); |
203 |
else
|
204 |
monitor_printf(mon, "invalid type: %s\n", type);
|
205 |
|
206 |
if (dev) {
|
207 |
monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
|
208 |
0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
|
209 |
PCI_FUNC(dev->devfn)); |
210 |
} else
|
211 |
monitor_printf(mon, "failed to add %s\n", opts);
|
212 |
} |
213 |
#endif
|
214 |
|
215 |
void pci_device_hot_remove(Monitor *mon, const char *pci_addr) |
216 |
{ |
217 |
PCIDevice *d; |
218 |
int dom, bus;
|
219 |
unsigned slot;
|
220 |
|
221 |
if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
|
222 |
return;
|
223 |
} |
224 |
|
225 |
d = pci_find_device(bus, slot, 0);
|
226 |
if (!d) {
|
227 |
monitor_printf(mon, "slot %d empty\n", slot);
|
228 |
return;
|
229 |
} |
230 |
qdev_unplug(&d->qdev); |
231 |
} |
232 |
|
233 |
void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict) |
234 |
{ |
235 |
pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
|
236 |
} |
237 |
|
238 |
static int pci_match_fn(void *dev_private, void *arg) |
239 |
{ |
240 |
PCIDevice *dev = dev_private; |
241 |
PCIDevice *match = arg; |
242 |
|
243 |
return (dev == match);
|
244 |
} |
245 |
|
246 |
/*
|
247 |
* OS has executed _EJ0 method, we now can remove the device
|
248 |
*/
|
249 |
void pci_device_hot_remove_success(PCIDevice *d)
|
250 |
{ |
251 |
int class_code;
|
252 |
|
253 |
class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1); |
254 |
|
255 |
switch(class_code) {
|
256 |
case PCI_BASE_CLASS_NETWORK:
|
257 |
destroy_nic(pci_match_fn, d); |
258 |
break;
|
259 |
} |
260 |
} |
261 |
|