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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 root 34:
1.1.1.5 root 35: #if defined(TARGET_I386)
1.1.1.4 root 36: static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
1.1.1.5 root 37: const char *devaddr,
38: const char *opts_str)
1.1 root 39: {
1.1.1.5 root 40: QemuOpts *opts;
41: PCIBus *bus;
42: int ret, devfn;
43:
44: bus = pci_get_bus_devfn(&devfn, devaddr);
45: if (!bus) {
46: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
47: return NULL;
48: }
49: if (!((BusState*)bus)->allow_hotplug) {
50: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
51: return NULL;
52: }
53:
1.1.1.6 ! root 54: opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
1.1.1.5 root 55: if (!opts) {
56: return NULL;
57: }
1.1 root 58:
1.1.1.5 root 59: qemu_opt_set(opts, "type", "nic");
60:
61: ret = net_client_init(mon, opts, 0);
1.1.1.3 root 62: if (ret < 0)
1.1 root 63: return NULL;
1.1.1.4 root 64: if (nd_table[ret].devaddr) {
65: monitor_printf(mon, "Parameter addr not supported\n");
66: return NULL;
67: }
68: return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
1.1 root 69: }
70:
1.1.1.6 ! root 71: static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
! 72: DriveInfo *dinfo, int printinfo)
1.1.1.5 root 73: {
74: SCSIBus *scsibus;
75: SCSIDevice *scsidev;
76:
77: scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
78: if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
1.1.1.6 ! root 79: error_report("Device is not a SCSI adapter");
1.1.1.5 root 80: return -1;
81: }
82:
83: /*
84: * drive_init() tries to find a default for dinfo->unit. Doesn't
85: * work at all for hotplug though as we assign the device to a
86: * specific bus instead of the first bus with spare scsi ids.
87: *
88: * Ditch the calculated value and reload from option string (if
89: * specified).
90: */
91: dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
1.1.1.6 ! root 92: scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit);
! 93: if (!scsidev) {
! 94: return -1;
! 95: }
1.1.1.5 root 96: dinfo->unit = scsidev->id;
97:
98: if (printinfo)
1.1.1.6 ! root 99: monitor_printf(mon, "OK bus %d, unit %d\n",
! 100: scsibus->busnr, scsidev->id);
1.1.1.5 root 101: return 0;
102: }
103:
104: void drive_hot_add(Monitor *mon, const QDict *qdict)
1.1 root 105: {
106: int dom, pci_bus;
107: unsigned slot;
1.1.1.6 ! root 108: int type;
1.1 root 109: PCIDevice *dev;
1.1.1.5 root 110: DriveInfo *dinfo = NULL;
111: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
112: const char *opts = qdict_get_str(qdict, "opts");
113:
114: dinfo = add_init_drive(opts);
115: if (!dinfo)
116: goto err;
117: if (dinfo->devaddr) {
1.1.1.4 root 118: monitor_printf(mon, "Parameter addr not supported\n");
1.1.1.5 root 119: goto err;
1.1.1.4 root 120: }
1.1.1.5 root 121: type = dinfo->type;
1.1 root 122:
123: switch (type) {
124: case IF_SCSI:
1.1.1.5 root 125: if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
126: goto err;
127: }
1.1.1.6 ! root 128: dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0);
1.1.1.5 root 129: if (!dev) {
130: monitor_printf(mon, "no pci device with address %s\n", pci_addr);
131: goto err;
132: }
1.1.1.6 ! root 133: if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
1.1.1.5 root 134: goto err;
135: }
136: break;
137: case IF_NONE:
138: monitor_printf(mon, "OK\n");
1.1 root 139: break;
140: default:
1.1.1.4 root 141: monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
1.1.1.5 root 142: goto err;
1.1 root 143: }
1.1.1.5 root 144: return;
1.1 root 145:
1.1.1.5 root 146: err:
147: if (dinfo)
148: drive_uninit(dinfo);
1.1 root 149: return;
150: }
151:
1.1.1.4 root 152: static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
153: const char *devaddr,
154: const char *opts)
1.1 root 155: {
1.1.1.4 root 156: PCIDevice *dev;
1.1.1.5 root 157: DriveInfo *dinfo = NULL;
158: int type = -1;
1.1 root 159: char buf[128];
1.1.1.5 root 160: PCIBus *bus;
161: int devfn;
1.1 root 162:
163: if (get_param_value(buf, sizeof(buf), "if", opts)) {
164: if (!strcmp(buf, "scsi"))
165: type = IF_SCSI;
166: else if (!strcmp(buf, "virtio")) {
167: type = IF_VIRTIO;
1.1.1.2 root 168: } else {
1.1.1.4 root 169: monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
170: return NULL;
1.1 root 171: }
172: } else {
1.1.1.4 root 173: monitor_printf(mon, "no if= specified\n");
174: return NULL;
1.1 root 175: }
176:
177: if (get_param_value(buf, sizeof(buf), "file", opts)) {
1.1.1.5 root 178: dinfo = add_init_drive(opts);
179: if (!dinfo)
1.1.1.4 root 180: return NULL;
1.1.1.5 root 181: if (dinfo->devaddr) {
1.1.1.4 root 182: monitor_printf(mon, "Parameter addr not supported\n");
183: return NULL;
184: }
1.1.1.5 root 185: } else {
186: dinfo = NULL;
187: }
188:
189: bus = pci_get_bus_devfn(&devfn, devaddr);
190: if (!bus) {
191: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
192: return NULL;
193: }
194: if (!((BusState*)bus)->allow_hotplug) {
195: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
1.1.1.4 root 196: return NULL;
1.1 root 197: }
198:
199: switch (type) {
200: case IF_SCSI:
1.1.1.5 root 201: dev = pci_create(bus, devfn, "lsi53c895a");
202: if (qdev_init(&dev->qdev) < 0)
203: dev = NULL;
204: if (dev && dinfo) {
1.1.1.6 ! root 205: if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
1.1.1.5 root 206: qdev_unplug(&dev->qdev);
207: dev = NULL;
208: }
209: }
1.1 root 210: break;
211: case IF_VIRTIO:
1.1.1.5 root 212: if (!dinfo) {
213: monitor_printf(mon, "virtio requires a backing file/device.\n");
214: return NULL;
215: }
216: dev = pci_create(bus, devfn, "virtio-blk-pci");
1.1.1.6 ! root 217: if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
! 218: qdev_free(&dev->qdev);
! 219: dev = NULL;
! 220: break;
! 221: }
1.1.1.5 root 222: if (qdev_init(&dev->qdev) < 0)
223: dev = NULL;
1.1 root 224: break;
1.1.1.4 root 225: default:
226: dev = NULL;
1.1 root 227: }
1.1.1.4 root 228: return dev;
1.1 root 229: }
230:
1.1.1.6 ! root 231: void pci_device_hot_add(Monitor *mon, const QDict *qdict)
1.1 root 232: {
233: PCIDevice *dev = NULL;
1.1.1.5 root 234: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
235: const char *type = qdict_get_str(qdict, "type");
236: const char *opts = qdict_get_try_str(qdict, "opts");
1.1 root 237:
1.1.1.4 root 238: /* strip legacy tag */
239: if (!strncmp(pci_addr, "pci_addr=", 9)) {
240: pci_addr += 9;
1.1 root 241: }
242:
1.1.1.4 root 243: if (!opts) {
244: opts = "";
1.1 root 245: }
246:
1.1.1.4 root 247: if (!strcmp(pci_addr, "auto"))
248: pci_addr = NULL;
249:
1.1.1.6 ! root 250: if (strcmp(type, "nic") == 0) {
1.1.1.4 root 251: dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
1.1.1.6 ! root 252: } else if (strcmp(type, "storage") == 0) {
1.1.1.4 root 253: dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
1.1.1.6 ! root 254: } else {
1.1.1.4 root 255: monitor_printf(mon, "invalid type: %s\n", type);
1.1.1.6 ! root 256: }
1.1 root 257:
258: if (dev) {
1.1.1.6 ! root 259: monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
! 260: pci_find_domain(dev->bus),
! 261: pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
! 262: PCI_FUNC(dev->devfn));
1.1 root 263: } else
1.1.1.4 root 264: monitor_printf(mon, "failed to add %s\n", opts);
1.1 root 265: }
266: #endif
267:
1.1.1.6 ! root 268: static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
1.1 root 269: {
270: PCIDevice *d;
271: int dom, bus;
272: unsigned slot;
273:
1.1.1.4 root 274: if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
1.1.1.6 ! root 275: return -1;
1.1 root 276: }
277:
1.1.1.6 ! root 278: d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0);
1.1 root 279: if (!d) {
1.1.1.4 root 280: monitor_printf(mon, "slot %d empty\n", slot);
1.1.1.6 ! root 281: return -1;
1.1 root 282: }
1.1.1.6 ! root 283: return qdev_unplug(&d->qdev);
1.1 root 284: }
285:
1.1.1.6 ! root 286: void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
1.1 root 287: {
1.1.1.5 root 288: pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
1.1 root 289: }
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