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(PCIBus *pci_bus, const char *opts)
40 ret = net_client_init("nic", opts);
43 return pci_nic_init(pci_bus, &nd_table[ret], -1, "rtl8139");
46 void drive_hot_add(Monitor *mon, const char *pci_addr, const char *opts)
50 int drive_idx, type, bus;
54 if (pci_read_devaddr(pci_addr, &dom, &pci_bus, &slot)) {
55 monitor_printf(mon, "Invalid pci address\n");
59 dev = pci_find_device(pci_bus, slot, 0);
61 monitor_printf(mon, "no pci device with address %s\n", pci_addr);
65 drive_idx = add_init_drive(opts);
68 type = drives_table[drive_idx].type;
69 bus = drive_get_max_bus (type);
74 lsi_scsi_attach (dev, drives_table[drive_idx].bdrv,
75 drives_table[drive_idx].unit);
78 monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
82 monitor_printf(mon, "OK bus %d, unit %d\n",
83 drives_table[drive_idx].bus,
84 drives_table[drive_idx].unit);
88 static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon, PCIBus *pci_bus,
92 int type = -1, drive_idx = -1;
95 if (get_param_value(buf, sizeof(buf), "if", opts)) {
96 if (!strcmp(buf, "scsi"))
98 else if (!strcmp(buf, "virtio")) {
101 monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
105 monitor_printf(mon, "no if= specified\n");
109 if (get_param_value(buf, sizeof(buf), "file", opts)) {
110 drive_idx = add_init_drive(opts);
113 } else if (type == IF_VIRTIO) {
114 monitor_printf(mon, "virtio requires a backing file/device.\n");
120 opaque = lsi_scsi_init (pci_bus, -1);
121 if (opaque && drive_idx >= 0)
122 lsi_scsi_attach (opaque, drives_table[drive_idx].bdrv,
123 drives_table[drive_idx].unit);
126 opaque = virtio_blk_init (pci_bus, drives_table[drive_idx].bdrv);
134 void pci_device_hot_add(Monitor *mon, const char *pci_addr, const char *type,
137 PCIDevice *dev = NULL;
142 if (pci_assign_devaddr(pci_addr, &dom, &bus, &slot)) {
143 monitor_printf(mon, "Invalid pci address\n");
147 pci_bus = pci_find_bus(bus);
149 monitor_printf(mon, "Can't find pci_bus %d\n", bus);
153 if (strcmp(type, "nic") == 0)
154 dev = qemu_pci_hot_add_nic(pci_bus, opts);
155 else if (strcmp(type, "storage") == 0)
156 dev = qemu_pci_hot_add_storage(mon, pci_bus, opts);
158 monitor_printf(mon, "invalid type: %s\n", type);
161 qemu_system_device_hot_add(bus, PCI_SLOT(dev->devfn), 1);
162 monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
163 0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
164 PCI_FUNC(dev->devfn));
166 monitor_printf(mon, "failed to add %s\n", opts);
170 void pci_device_hot_remove(Monitor *mon, const char *pci_addr)
176 if (pci_read_devaddr(pci_addr, &dom, &bus, &slot)) {
177 monitor_printf(mon, "Invalid pci address\n");
181 d = pci_find_device(bus, slot, 0);
183 monitor_printf(mon, "slot %d empty\n", slot);
187 qemu_system_device_hot_add(bus, slot, 0);
190 static int pci_match_fn(void *dev_private, void *arg)
192 PCIDevice *dev = dev_private;
193 PCIDevice *match = arg;
195 return (dev == match);
199 * OS has executed _EJ0 method, we now can remove the device
201 void pci_device_hot_remove_success(int pcibus, int slot)
203 PCIDevice *d = pci_find_device(pcibus, slot, 0);
207 monitor_printf(cur_mon, "invalid slot %d\n", slot);
211 class_code = d->config_read(d, PCI_CLASS_DEVICE+1, 1);
214 case PCI_BASE_CLASS_STORAGE:
215 destroy_bdrvs(pci_match_fn, d);
217 case PCI_BASE_CLASS_NETWORK:
218 destroy_nic(pci_match_fn, d);
222 pci_unregister_device(d);