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1.1 root 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"
1.1.1.4 root 30: #include "monitor.h"
1.1.1.5 root 31: #include "scsi.h"
1.1 root 32: #include "virtio-blk.h"
1.1.1.5 root 33: #include "qemu-config.h"
1.1.1.7 root 34: #include "blockdev.h"
1.1 root 35:
1.1.1.5 root 36: #if defined(TARGET_I386)
1.1.1.4 root 37: static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
1.1.1.5 root 38: const char *devaddr,
39: const char *opts_str)
1.1 root 40: {
1.1.1.5 root 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:
1.1.1.7 root 55: opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1.1.1.5 root 56: if (!opts) {
57: return NULL;
58: }
1.1 root 59:
1.1.1.5 root 60: qemu_opt_set(opts, "type", "nic");
61:
62: ret = net_client_init(mon, opts, 0);
1.1.1.3 root 63: if (ret < 0)
1.1 root 64: return NULL;
1.1.1.4 root 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);
1.1 root 70: }
71:
1.1.1.6 root 72: static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
73: DriveInfo *dinfo, int printinfo)
1.1.1.5 root 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) {
1.1.1.6 root 80: error_report("Device is not a SCSI adapter");
1.1.1.5 root 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);
1.1.1.7 root 93: dinfo->bus = scsibus->busnr;
1.1.1.9 ! root 94: scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
! 95: false, -1);
1.1.1.6 root 96: if (!scsidev) {
97: return -1;
98: }
1.1.1.5 root 99: dinfo->unit = scsidev->id;
100:
101: if (printinfo)
1.1.1.6 root 102: monitor_printf(mon, "OK bus %d, unit %d\n",
103: scsibus->busnr, scsidev->id);
1.1.1.5 root 104: return 0;
105: }
106:
107: void drive_hot_add(Monitor *mon, const QDict *qdict)
1.1 root 108: {
109: int dom, pci_bus;
110: unsigned slot;
1.1.1.6 root 111: int type;
1.1 root 112: PCIDevice *dev;
1.1.1.5 root 113: DriveInfo *dinfo = NULL;
114: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
115: const char *opts = qdict_get_str(qdict, "opts");
116:
117: dinfo = add_init_drive(opts);
118: if (!dinfo)
119: goto err;
120: if (dinfo->devaddr) {
1.1.1.4 root 121: monitor_printf(mon, "Parameter addr not supported\n");
1.1.1.5 root 122: goto err;
1.1.1.4 root 123: }
1.1.1.5 root 124: type = dinfo->type;
1.1 root 125:
126: switch (type) {
127: case IF_SCSI:
1.1.1.5 root 128: if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
129: goto err;
130: }
1.1.1.8 root 131: dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
132: PCI_DEVFN(slot, 0));
1.1.1.5 root 133: if (!dev) {
134: monitor_printf(mon, "no pci device with address %s\n", pci_addr);
135: goto err;
136: }
1.1.1.6 root 137: if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
1.1.1.5 root 138: goto err;
139: }
140: break;
141: case IF_NONE:
142: monitor_printf(mon, "OK\n");
1.1 root 143: break;
144: default:
1.1.1.4 root 145: monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
1.1.1.5 root 146: goto err;
1.1 root 147: }
1.1.1.5 root 148: return;
1.1 root 149:
1.1.1.5 root 150: err:
151: if (dinfo)
1.1.1.7 root 152: drive_put_ref(dinfo);
1.1 root 153: return;
154: }
155:
1.1.1.4 root 156: static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
157: const char *devaddr,
158: const char *opts)
1.1 root 159: {
1.1.1.4 root 160: PCIDevice *dev;
1.1.1.5 root 161: DriveInfo *dinfo = NULL;
162: int type = -1;
1.1 root 163: char buf[128];
1.1.1.5 root 164: PCIBus *bus;
165: int devfn;
1.1 root 166:
167: if (get_param_value(buf, sizeof(buf), "if", opts)) {
168: if (!strcmp(buf, "scsi"))
169: type = IF_SCSI;
170: else if (!strcmp(buf, "virtio")) {
171: type = IF_VIRTIO;
1.1.1.2 root 172: } else {
1.1.1.4 root 173: monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
174: return NULL;
1.1 root 175: }
176: } else {
1.1.1.4 root 177: monitor_printf(mon, "no if= specified\n");
178: return NULL;
1.1 root 179: }
180:
181: if (get_param_value(buf, sizeof(buf), "file", opts)) {
1.1.1.5 root 182: dinfo = add_init_drive(opts);
183: if (!dinfo)
1.1.1.4 root 184: return NULL;
1.1.1.5 root 185: if (dinfo->devaddr) {
1.1.1.4 root 186: monitor_printf(mon, "Parameter addr not supported\n");
187: return NULL;
188: }
1.1.1.5 root 189: } else {
190: dinfo = NULL;
191: }
192:
193: bus = pci_get_bus_devfn(&devfn, devaddr);
194: if (!bus) {
195: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
196: return NULL;
197: }
198: if (!((BusState*)bus)->allow_hotplug) {
199: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
1.1.1.4 root 200: return NULL;
1.1 root 201: }
202:
203: switch (type) {
204: case IF_SCSI:
1.1.1.5 root 205: dev = pci_create(bus, devfn, "lsi53c895a");
206: if (qdev_init(&dev->qdev) < 0)
207: dev = NULL;
208: if (dev && dinfo) {
1.1.1.6 root 209: if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
1.1.1.5 root 210: qdev_unplug(&dev->qdev);
211: dev = NULL;
212: }
213: }
1.1 root 214: break;
215: case IF_VIRTIO:
1.1.1.5 root 216: if (!dinfo) {
217: monitor_printf(mon, "virtio requires a backing file/device.\n");
218: return NULL;
219: }
220: dev = pci_create(bus, devfn, "virtio-blk-pci");
1.1.1.6 root 221: if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
222: qdev_free(&dev->qdev);
223: dev = NULL;
224: break;
225: }
1.1.1.5 root 226: if (qdev_init(&dev->qdev) < 0)
227: dev = NULL;
1.1 root 228: break;
1.1.1.4 root 229: default:
230: dev = NULL;
1.1 root 231: }
1.1.1.4 root 232: return dev;
1.1 root 233: }
234:
1.1.1.6 root 235: void pci_device_hot_add(Monitor *mon, const QDict *qdict)
1.1 root 236: {
237: PCIDevice *dev = NULL;
1.1.1.5 root 238: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
239: const char *type = qdict_get_str(qdict, "type");
240: const char *opts = qdict_get_try_str(qdict, "opts");
1.1 root 241:
1.1.1.4 root 242: /* strip legacy tag */
243: if (!strncmp(pci_addr, "pci_addr=", 9)) {
244: pci_addr += 9;
1.1 root 245: }
246:
1.1.1.4 root 247: if (!opts) {
248: opts = "";
1.1 root 249: }
250:
1.1.1.4 root 251: if (!strcmp(pci_addr, "auto"))
252: pci_addr = NULL;
253:
1.1.1.6 root 254: if (strcmp(type, "nic") == 0) {
1.1.1.4 root 255: dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
1.1.1.6 root 256: } else if (strcmp(type, "storage") == 0) {
1.1.1.4 root 257: dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
1.1.1.6 root 258: } else {
1.1.1.4 root 259: monitor_printf(mon, "invalid type: %s\n", type);
1.1.1.6 root 260: }
1.1 root 261:
262: if (dev) {
1.1.1.6 root 263: monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
264: pci_find_domain(dev->bus),
265: pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
266: PCI_FUNC(dev->devfn));
1.1 root 267: } else
1.1.1.4 root 268: monitor_printf(mon, "failed to add %s\n", opts);
1.1 root 269: }
270: #endif
271:
1.1.1.6 root 272: static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
1.1 root 273: {
274: PCIDevice *d;
275: int dom, bus;
276: unsigned slot;
277:
1.1.1.4 root 278: if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
1.1.1.6 root 279: return -1;
1.1 root 280: }
281:
1.1.1.8 root 282: d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
1.1 root 283: if (!d) {
1.1.1.4 root 284: monitor_printf(mon, "slot %d empty\n", slot);
1.1.1.6 root 285: return -1;
1.1 root 286: }
1.1.1.6 root 287: return qdev_unplug(&d->qdev);
1.1 root 288: }
289:
1.1.1.6 root 290: void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
1.1 root 291: {
1.1.1.5 root 292: pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
1.1 root 293: }
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