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