2 * QEMU PCI hotplug support
4 * Copyright (c) 2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
32 #include "block_int.h"
33 #include "scsi-disk.h"
34 #include "virtio-blk.h"
36 #if defined(TARGET_I386) || defined(TARGET_X86_64)
37 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
38 const char *devaddr, const char *opts)
42 ret = net_client_init(mon, "nic", opts);
45 if (nd_table[ret].devaddr) {
46 monitor_printf(mon, "Parameter addr not supported\n");
49 return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
52 void drive_hot_add(Monitor *mon, const QDict *qdict)
60 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
61 const char *opts = qdict_get_str(qdict, "opts");
64 if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
68 dev = pci_find_device(pci_bus, slot, 0);
70 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
74 dinfo = add_init_drive(opts);
78 monitor_printf(mon, "Parameter addr not supported\n");
82 bus = drive_get_max_bus (type);
87 scsibus = LIST_FIRST(&dev->qdev.child_bus);
88 scsi_bus_legacy_add_drive(DO_UPCAST(SCSIBus, qbus, scsibus),
92 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
96 monitor_printf(mon, "OK bus %d, unit %d\n",
102 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
107 DriveInfo *dinfo = NULL;
111 if (get_param_value(buf, sizeof(buf), "if", opts)) {
112 if (!strcmp(buf, "scsi"))
114 else if (!strcmp(buf, "virtio")) {
117 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
121 monitor_printf(mon, "no if= specified\n");
125 if (get_param_value(buf, sizeof(buf), "file", opts)) {
126 dinfo = add_init_drive(opts);
129 if (dinfo->devaddr) {
130 monitor_printf(mon, "Parameter addr not supported\n");
139 dev = pci_create("lsi53c895a", devaddr);
143 monitor_printf(mon, "virtio requires a backing file/device.\n");
146 dev = pci_create("virtio-blk-pci", devaddr);
147 qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
153 qdev_init(&dev->qdev);
157 void pci_device_hot_add(Monitor *mon, const QDict *qdict)
159 PCIDevice *dev = NULL;
160 const char *pci_addr = qdict_get_str(qdict, "pci_addr");
161 const char *type = qdict_get_str(qdict, "type");
162 const char *opts = qdict_get_try_str(qdict, "opts");
164 /* strip legacy tag */
165 if (!strncmp(pci_addr, "pci_addr=", 9)) {
173 if (!strcmp(pci_addr, "auto"))
176 if (strcmp(type, "nic") == 0)
177 dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
178 else if (strcmp(type, "storage") == 0)
179 dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
181 monitor_printf(mon, "invalid type: %s\n", type);
184 qemu_system_device_hot_add(pci_bus_num(dev->bus),
185 PCI_SLOT(dev->devfn), 1);
186 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
187 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
188 PCI_FUNC(dev->devfn));
190 monitor_printf(mon, "failed to add %s\n", opts);
194 void pci_device_hot_remove(Monitor *mon, const char *pci_addr)
200 if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
204 d = pci_find_device(bus, slot, 0);
206 monitor_printf(mon, "slot %d empty\n", slot);
210 qemu_system_device_hot_add(bus, slot, 0);
213 void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
215 pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
218 static int pci_match_fn(void *dev_private, void *arg)
220 PCIDevice *dev = dev_private;
221 PCIDevice *match = arg;
223 return (dev == match);
227 * OS has executed _EJ0 method, we now can remove the device
229 void pci_device_hot_remove_success(int pcibus, int slot)
231 PCIDevice *d = pci_find_device(pcibus, slot, 0);
235 monitor_printf(cur_mon, "invalid slot %d\n", slot);
239 class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1);
242 case PCI_BASE_CLASS_STORAGE:
243 destroy_bdrvs(pci_match_fn, d);
245 case PCI_BASE_CLASS_NETWORK:
246 destroy_nic(pci_match_fn, d);
250 pci_unregister_device(d);