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 "virtio-blk.h"
35 #if defined(TARGET_I386) || defined(TARGET_X86_64)
36 static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
37 const char *devaddr, const char *opts)
41 ret = net_client_init(mon, "nic", opts);
44 if (nd_table[ret].devaddr) {
45 monitor_printf(mon, "Parameter addr not supported\n");
48 return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
51 void drive_hot_add(Monitor *mon, const char *pci_addr, const char *opts)
55 int drive_idx, type, bus;
59 if (pci_read_devaddr(pci_addr, &dom, &pci_bus, &slot)) {
60 monitor_printf(mon, "Invalid pci address\n");
64 dev = pci_find_device(pci_bus, slot, 0);
66 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
70 drive_idx = add_init_drive(opts);
73 if (drives_table[drive_idx].devaddr) {
74 monitor_printf(mon, "Parameter addr not supported\n");
77 type = drives_table[drive_idx].type;
78 bus = drive_get_max_bus (type);
83 lsi_scsi_attach(&dev->qdev, drives_table[drive_idx].bdrv,
84 drives_table[drive_idx].unit);
87 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
91 monitor_printf(mon, "OK bus %d, unit %d\n",
92 drives_table[drive_idx].bus,
93 drives_table[drive_idx].unit);
97 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
102 int type = -1, drive_idx = -1;
105 if (get_param_value(buf, sizeof(buf), "if", opts)) {
106 if (!strcmp(buf, "scsi"))
108 else if (!strcmp(buf, "virtio")) {
111 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
115 monitor_printf(mon, "no if= specified\n");
119 if (get_param_value(buf, sizeof(buf), "file", opts)) {
120 drive_idx = add_init_drive(opts);
123 if (drives_table[drive_idx].devaddr) {
124 monitor_printf(mon, "Parameter addr not supported\n");
127 } else if (type == IF_VIRTIO) {
128 monitor_printf(mon, "virtio requires a backing file/device.\n");
134 dev = pci_create("lsi53c895a", devaddr);
137 dev = pci_create("virtio-blk-pci", devaddr);
143 qdev_init(&dev->qdev);
147 void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type,
150 PCIDevice *dev = NULL;
151 const char *devaddr = NULL;
154 if (!get_param_value(buf, sizeof(buf), "pci_addr", pci_addr)) {
155 monitor_printf(mon, "Invalid pci address\n");
159 if (strcmp(buf, "auto"))
162 if (strcmp(type, "nic") == 0)
163 dev = qemu_pci_hot_add_nic(mon, devaddr, opts);
164 else if (strcmp(type, "storage") == 0)
165 dev = qemu_pci_hot_add_storage(mon, devaddr, opts);
167 monitor_printf(mon, "invalid type: %s\n", type);
170 qemu_system_device_hot_add(pci_bus_num(dev->bus),
171 PCI_SLOT(dev->devfn), 1);
172 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
173 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
174 PCI_FUNC(dev->devfn));
176 monitor_printf(mon, "failed to add %s\n", opts);
180 void pci_device_hot_remove(Monitor *mon, const char *pci_addr)
186 if (pci_read_devaddr(pci_addr, &dom, &bus, &slot)) {
187 monitor_printf(mon, "Invalid pci address\n");
191 d = pci_find_device(bus, slot, 0);
193 monitor_printf(mon, "slot %d empty\n", slot);
197 qemu_system_device_hot_add(bus, slot, 0);
200 static int pci_match_fn(void *dev_private, void *arg)
202 PCIDevice *dev = dev_private;
203 PCIDevice *match = arg;
205 return (dev == match);
209 * OS has executed _EJ0 method, we now can remove the device
211 void pci_device_hot_remove_success(int pcibus, int slot)
213 PCIDevice *d = pci_find_device(pcibus, slot, 0);
217 monitor_printf(cur_mon, "invalid slot %d\n", slot);
221 class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1);
224 case PCI_BASE_CLASS_STORAGE:
225 destroy_bdrvs(pci_match_fn, d);
227 case PCI_BASE_CLASS_NETWORK:
228 destroy_nic(pci_match_fn, d);
232 pci_unregister_device(d);