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