![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pci-hotplug.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / hw|
Return to pci-hotplug.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / hw |
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 "sysemu.h"
30: #include "pc.h"
1.1.1.4 root 31: #include "monitor.h"
1.1 root 32: #include "block_int.h"
1.1.1.5 ! root 33: #include "scsi.h"
1.1 root 34: #include "virtio-blk.h"
1.1.1.5 ! root 35: #include "qemu-config.h"
! 36: #include "qemu-objects.h"
1.1 root 37:
1.1.1.5 ! root 38: #if defined(TARGET_I386)
1.1.1.4 root 39: static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
1.1.1.5 ! root 40: const char *devaddr,
! 41: const char *opts_str)
1.1 root 42: {
1.1.1.5 ! root 43: QemuOpts *opts;
! 44: PCIBus *bus;
! 45: int ret, devfn;
! 46:
! 47: bus = pci_get_bus_devfn(&devfn, devaddr);
! 48: if (!bus) {
! 49: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
! 50: return NULL;
! 51: }
! 52: if (!((BusState*)bus)->allow_hotplug) {
! 53: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
! 54: return NULL;
! 55: }
! 56:
! 57: opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
! 58: if (!opts) {
! 59: monitor_printf(mon, "parsing network options '%s' failed\n",
! 60: opts_str ? opts_str : "");
! 61: return NULL;
! 62: }
1.1 root 63:
1.1.1.5 ! root 64: qemu_opt_set(opts, "type", "nic");
! 65:
! 66: ret = net_client_init(mon, opts, 0);
1.1.1.3 root 67: if (ret < 0)
1.1 root 68: return NULL;
1.1.1.4 root 69: if (nd_table[ret].devaddr) {
70: monitor_printf(mon, "Parameter addr not supported\n");
71: return NULL;
72: }
73: return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
1.1 root 74: }
75:
1.1.1.5 ! root 76: static int scsi_hot_add(DeviceState *adapter, DriveInfo *dinfo, int printinfo)
! 77: {
! 78: SCSIBus *scsibus;
! 79: SCSIDevice *scsidev;
! 80:
! 81: scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
! 82: if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
! 83: qemu_error("Device is not a SCSI adapter\n");
! 84: return -1;
! 85: }
! 86:
! 87: /*
! 88: * drive_init() tries to find a default for dinfo->unit. Doesn't
! 89: * work at all for hotplug though as we assign the device to a
! 90: * specific bus instead of the first bus with spare scsi ids.
! 91: *
! 92: * Ditch the calculated value and reload from option string (if
! 93: * specified).
! 94: */
! 95: dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
! 96: scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
! 97: dinfo->unit = scsidev->id;
! 98:
! 99: if (printinfo)
! 100: qemu_error("OK bus %d, unit %d\n", scsibus->busnr, scsidev->id);
! 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;
1.1.1.5 ! root 108: int type, bus;
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: bus = drive_get_max_bus (type);
123:
124: switch (type) {
125: case IF_SCSI:
1.1.1.5 ! root 126: if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
! 127: goto err;
! 128: }
! 129: dev = pci_find_device(pci_find_root_bus(0), pci_bus, slot, 0);
! 130: if (!dev) {
! 131: monitor_printf(mon, "no pci device with address %s\n", pci_addr);
! 132: goto err;
! 133: }
! 134: if (scsi_hot_add(&dev->qdev, dinfo, 1) != 0) {
! 135: goto err;
! 136: }
! 137: break;
! 138: case IF_NONE:
! 139: monitor_printf(mon, "OK\n");
1.1 root 140: break;
141: default:
1.1.1.4 root 142: monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
1.1.1.5 ! root 143: goto err;
1.1 root 144: }
1.1.1.5 ! root 145: return;
1.1 root 146:
1.1.1.5 ! root 147: err:
! 148: if (dinfo)
! 149: drive_uninit(dinfo);
1.1 root 150: return;
151: }
152:
1.1.1.4 root 153: static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
154: const char *devaddr,
155: const char *opts)
1.1 root 156: {
1.1.1.4 root 157: PCIDevice *dev;
1.1.1.5 ! root 158: DriveInfo *dinfo = NULL;
! 159: int type = -1;
1.1 root 160: char buf[128];
1.1.1.5 ! root 161: PCIBus *bus;
! 162: int devfn;
1.1 root 163:
164: if (get_param_value(buf, sizeof(buf), "if", opts)) {
165: if (!strcmp(buf, "scsi"))
166: type = IF_SCSI;
167: else if (!strcmp(buf, "virtio")) {
168: type = IF_VIRTIO;
1.1.1.2 root 169: } else {
1.1.1.4 root 170: monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
171: return NULL;
1.1 root 172: }
173: } else {
1.1.1.4 root 174: monitor_printf(mon, "no if= specified\n");
175: return NULL;
1.1 root 176: }
177:
178: if (get_param_value(buf, sizeof(buf), "file", opts)) {
1.1.1.5 ! root 179: dinfo = add_init_drive(opts);
! 180: if (!dinfo)
1.1.1.4 root 181: return NULL;
1.1.1.5 ! root 182: if (dinfo->devaddr) {
1.1.1.4 root 183: monitor_printf(mon, "Parameter addr not supported\n");
184: return NULL;
185: }
1.1.1.5 ! root 186: } else {
! 187: dinfo = NULL;
! 188: }
! 189:
! 190: bus = pci_get_bus_devfn(&devfn, devaddr);
! 191: if (!bus) {
! 192: monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
! 193: return NULL;
! 194: }
! 195: if (!((BusState*)bus)->allow_hotplug) {
! 196: monitor_printf(mon, "PCI bus doesn't support hotplug\n");
1.1.1.4 root 197: return NULL;
1.1 root 198: }
199:
200: switch (type) {
201: case IF_SCSI:
1.1.1.5 ! root 202: dev = pci_create(bus, devfn, "lsi53c895a");
! 203: if (qdev_init(&dev->qdev) < 0)
! 204: dev = NULL;
! 205: if (dev && dinfo) {
! 206: if (scsi_hot_add(&dev->qdev, dinfo, 0) != 0) {
! 207: qdev_unplug(&dev->qdev);
! 208: dev = NULL;
! 209: }
! 210: }
1.1 root 211: break;
212: case IF_VIRTIO:
1.1.1.5 ! root 213: if (!dinfo) {
! 214: monitor_printf(mon, "virtio requires a backing file/device.\n");
! 215: return NULL;
! 216: }
! 217: dev = pci_create(bus, devfn, "virtio-blk-pci");
! 218: qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
! 219: if (qdev_init(&dev->qdev) < 0)
! 220: dev = NULL;
1.1 root 221: break;
1.1.1.4 root 222: default:
223: dev = NULL;
1.1 root 224: }
1.1.1.4 root 225: return dev;
1.1 root 226: }
227:
1.1.1.5 ! root 228: void pci_device_hot_add_print(Monitor *mon, const QObject *data)
! 229: {
! 230: QDict *qdict;
! 231:
! 232: assert(qobject_type(data) == QTYPE_QDICT);
! 233: qdict = qobject_to_qdict(data);
! 234:
! 235: monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
! 236: (int) qdict_get_int(qdict, "domain"),
! 237: (int) qdict_get_int(qdict, "bus"),
! 238: (int) qdict_get_int(qdict, "slot"),
! 239: (int) qdict_get_int(qdict, "function"));
! 240:
! 241: }
! 242:
! 243: /**
! 244: * pci_device_hot_add(): Hot add a PCI device
! 245: *
! 246: * Return a QDict with the following device information:
! 247: *
! 248: * - "domain": domain number
! 249: * - "bus": bus number
! 250: * - "slot": slot number
! 251: * - "function": function number
! 252: *
! 253: * Example:
! 254: *
! 255: * { "domain": 0, "bus": 0, "slot": 5, "function": 0 }
! 256: */
! 257: void pci_device_hot_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1.1 root 258: {
259: PCIDevice *dev = NULL;
1.1.1.5 ! root 260: const char *pci_addr = qdict_get_str(qdict, "pci_addr");
! 261: const char *type = qdict_get_str(qdict, "type");
! 262: const char *opts = qdict_get_try_str(qdict, "opts");
1.1 root 263:
1.1.1.4 root 264: /* strip legacy tag */
265: if (!strncmp(pci_addr, "pci_addr=", 9)) {
266: pci_addr += 9;
1.1 root 267: }
268:
1.1.1.4 root 269: if (!opts) {
270: opts = "";
1.1 root 271: }
272:
1.1.1.4 root 273: if (!strcmp(pci_addr, "auto"))
274: pci_addr = NULL;
275:
1.1 root 276: if (strcmp(type, "nic") == 0)
1.1.1.4 root 277: dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
1.1 root 278: else if (strcmp(type, "storage") == 0)
1.1.1.4 root 279: dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
1.1 root 280: else
1.1.1.4 root 281: monitor_printf(mon, "invalid type: %s\n", type);
1.1 root 282:
283: if (dev) {
1.1.1.5 ! root 284: *ret_data =
! 285: qobject_from_jsonf("{ 'domain': 0, 'bus': %d, 'slot': %d, "
! 286: "'function': %d }", pci_bus_num(dev->bus),
! 287: PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
! 288: assert(*ret_data != NULL);
1.1 root 289: } else
1.1.1.4 root 290: monitor_printf(mon, "failed to add %s\n", opts);
1.1 root 291: }
292: #endif
293:
1.1.1.4 root 294: void pci_device_hot_remove(Monitor *mon, const char *pci_addr)
1.1 root 295: {
296: PCIDevice *d;
297: int dom, bus;
298: unsigned slot;
299:
1.1.1.4 root 300: if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
1.1 root 301: return;
302: }
303:
1.1.1.5 ! root 304: d = pci_find_device(pci_find_root_bus(0), bus, slot, 0);
1.1 root 305: if (!d) {
1.1.1.4 root 306: monitor_printf(mon, "slot %d empty\n", slot);
1.1 root 307: return;
308: }
1.1.1.5 ! root 309: qdev_unplug(&d->qdev);
1.1 root 310: }
311:
1.1.1.5 ! root 312: void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict,
! 313: QObject **ret_data)
1.1 root 314: {
1.1.1.5 ! root 315: pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
1.1 root 316: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.