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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: }
1.1.1.8 ! root 130: dev = pci_find_device(pci_find_root_bus(dom), pci_bus,
! 131: PCI_DEVFN(slot, 0));
1.1.1.5 root 132: if (!dev) {
133: monitor_printf(mon, "no pci device with address %s\n", pci_addr);
134: goto err;
135: }
1.1.1.6 root 136: if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
1.1.1.5 root 137: goto err;
138: }
139: break;
140: case IF_NONE:
141: monitor_printf(mon, "OK\n");
1.1 root 142: break;
143: default:
1.1.1.4 root 144: monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
1.1.1.5 root 145: goto err;
1.1 root 146: }
1.1.1.5 root 147: return;
1.1 root 148:
1.1.1.5 root 149: err:
150: if (dinfo)
1.1.1.7 root 151: drive_put_ref(dinfo);
1.1 root 152: return;
153: }
154:
1.1.1.4 root 155: static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
156: const char *devaddr,
157: const char *opts)
1.1 root 158: {
1.1.1.4 root 159: PCIDevice *dev;
1.1.1.5 root 160: DriveInfo *dinfo = NULL;
161: int type = -1;
1.1 root 162: char buf[128];
1.1.1.5 root 163: PCIBus *bus;
164: int devfn;
1.1 root 165:
166: if (get_param_value(buf, sizeof(buf), "if", opts)) {
167: if (!strcmp(buf, "scsi"))
168: type = IF_SCSI;
169: else if (!strcmp(buf, "virtio")) {
170: type = IF_VIRTIO;
1.1.1.2 root 171: } else {
1.1.1.4 root 172: monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
173: return NULL;
1.1 root 174: }
175: } else {
1.1.1.4 root 176: monitor_printf(mon, "no if= specified\n");
177: return NULL;
1.1 root 178: }
179:
180: if (get_param_value(buf, sizeof(buf), "file", opts)) {
1.1.1.5 root 181: dinfo = add_init_drive(opts);
182: if (!dinfo)
1.1.1.4 root 183: return NULL;
1.1.1.5 root 184: if (dinfo->devaddr) {
1.1.1.4 root 185: monitor_printf(mon, "Parameter addr not supported\n");
186: return NULL;
187: }
1.1.1.5 root 188: } else {
189: dinfo = NULL;
190: }
191:
192: bus = pci_get_bus_devfn(&devfn, devaddr);
193: if (!bus) {
194: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
195: return NULL;
196: }
197: if (!((BusState*)bus)->allow_hotplug) {
198: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
1.1.1.4 root 199: return NULL;
1.1 root 200: }
201:
202: switch (type) {
203: case IF_SCSI:
1.1.1.5 root 204: dev = pci_create(bus, devfn, "lsi53c895a");
205: if (qdev_init(&dev->qdev) < 0)
206: dev = NULL;
207: if (dev && dinfo) {
1.1.1.6 root 208: if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
1.1.1.5 root 209: qdev_unplug(&dev->qdev);
210: dev = NULL;
211: }
212: }
1.1 root 213: break;
214: case IF_VIRTIO:
1.1.1.5 root 215: if (!dinfo) {
216: monitor_printf(mon, "virtio requires a backing file/device.\n");
217: return NULL;
218: }
219: dev = pci_create(bus, devfn, "virtio-blk-pci");
1.1.1.6 root 220: if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
221: qdev_free(&dev->qdev);
222: dev = NULL;
223: break;
224: }
1.1.1.5 root 225: if (qdev_init(&dev->qdev) < 0)
226: dev = NULL;
1.1 root 227: break;
1.1.1.4 root 228: default:
229: dev = NULL;
1.1 root 230: }
1.1.1.4 root 231: return dev;
1.1 root 232: }
233:
1.1.1.6 root 234: void pci_device_hot_add(Monitor *mon, const QDict *qdict)
1.1 root 235: {
236: PCIDevice *dev = NULL;
1.1.1.5 root 237: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
238: const char *type = qdict_get_str(qdict, "type");
239: const char *opts = qdict_get_try_str(qdict, "opts");
1.1 root 240:
1.1.1.4 root 241: /* strip legacy tag */
242: if (!strncmp(pci_addr, "pci_addr=", 9)) {
243: pci_addr += 9;
1.1 root 244: }
245:
1.1.1.4 root 246: if (!opts) {
247: opts = "";
1.1 root 248: }
249:
1.1.1.4 root 250: if (!strcmp(pci_addr, "auto"))
251: pci_addr = NULL;
252:
1.1.1.6 root 253: if (strcmp(type, "nic") == 0) {
1.1.1.4 root 254: dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
1.1.1.6 root 255: } else if (strcmp(type, "storage") == 0) {
1.1.1.4 root 256: dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
1.1.1.6 root 257: } else {
1.1.1.4 root 258: monitor_printf(mon, "invalid type: %s\n", type);
1.1.1.6 root 259: }
1.1 root 260:
261: if (dev) {
1.1.1.6 root 262: monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
263: pci_find_domain(dev->bus),
264: pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
265: PCI_FUNC(dev->devfn));
1.1 root 266: } else
1.1.1.4 root 267: monitor_printf(mon, "failed to add %s\n", opts);
1.1 root 268: }
269: #endif
270:
1.1.1.6 root 271: static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
1.1 root 272: {
273: PCIDevice *d;
274: int dom, bus;
275: unsigned slot;
276:
1.1.1.4 root 277: if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
1.1.1.6 root 278: return -1;
1.1 root 279: }
280:
1.1.1.8 ! root 281: d = pci_find_device(pci_find_root_bus(dom), bus, PCI_DEVFN(slot, 0));
1.1 root 282: if (!d) {
1.1.1.4 root 283: monitor_printf(mon, "slot %d empty\n", slot);
1.1.1.6 root 284: return -1;
1.1 root 285: }
1.1.1.6 root 286: return qdev_unplug(&d->qdev);
1.1 root 287: }
288:
1.1.1.6 root 289: void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
1.1 root 290: {
1.1.1.5 root 291: pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
1.1 root 292: }
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