aboutsummaryrefslogtreecommitdiff
path: root/hw/pci/pci-hotplug-old.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/pci/pci-hotplug-old.c')
-rw-r--r--hw/pci/pci-hotplug-old.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/hw/pci/pci-hotplug-old.c b/hw/pci/pci-hotplug-old.c
new file mode 100644
index 0000000000..8077289756
--- /dev/null
+++ b/hw/pci/pci-hotplug-old.c
@@ -0,0 +1,337 @@
+/*
+ * Deprecated PCI hotplug interface support
+ * This covers the old pci_add / pci_del command, whereas the more general
+ * device_add / device_del commands are now preferred.
+ *
+ * Copyright (c) 2004 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "hw/pci/pci.h"
+#include "net/net.h"
+#include "hw/i386/pc.h"
+#include "monitor/monitor.h"
+#include "hw/scsi/scsi.h"
+#include "hw/virtio/virtio-blk.h"
+#include "qemu/config-file.h"
+#include "sysemu/blockdev.h"
+#include "qapi/error.h"
+
+static int pci_read_devaddr(Monitor *mon, const char *addr,
+ int *busp, unsigned *slotp)
+{
+ int dom;
+
+ /* strip legacy tag */
+ if (!strncmp(addr, "pci_addr=", 9)) {
+ addr += 9;
+ }
+ if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
+ monitor_printf(mon, "Invalid pci address\n");
+ return -1;
+ }
+ if (dom != 0) {
+ monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
+ return -1;
+ }
+ return 0;
+}
+
+static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
+ const char *devaddr,
+ const char *opts_str)
+{
+ Error *local_err = NULL;
+ QemuOpts *opts;
+ PCIBus *root = pci_find_primary_bus();
+ PCIBus *bus;
+ int ret, devfn;
+
+ if (!root) {
+ monitor_printf(mon, "no primary PCI bus (if there are multiple"
+ " PCI roots, you must use device_add instead)");
+ return NULL;
+ }
+
+ bus = pci_get_bus_devfn(&devfn, root, devaddr);
+ if (!bus) {
+ monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
+ return NULL;
+ }
+ if (!((BusState*)bus)->allow_hotplug) {
+ monitor_printf(mon, "PCI bus doesn't support hotplug\n");
+ return NULL;
+ }
+
+ opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
+ if (!opts) {
+ return NULL;
+ }
+
+ qemu_opt_set(opts, "type", "nic");
+
+ ret = net_client_init(opts, 0, &local_err);
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
+ return NULL;
+ }
+ if (nd_table[ret].devaddr) {
+ monitor_printf(mon, "Parameter addr not supported\n");
+ return NULL;
+ }
+ return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
+}
+
+static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
+ DriveInfo *dinfo, int printinfo)
+{
+ SCSIBus *scsibus;
+ SCSIDevice *scsidev;
+
+ scsibus = (SCSIBus *)
+ object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
+ TYPE_SCSI_BUS);
+ if (!scsibus) {
+ error_report("Device is not a SCSI adapter");
+ return -1;
+ }
+
+ /*
+ * drive_init() tries to find a default for dinfo->unit. Doesn't
+ * work at all for hotplug though as we assign the device to a
+ * specific bus instead of the first bus with spare scsi ids.
+ *
+ * Ditch the calculated value and reload from option string (if
+ * specified).
+ */
+ dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
+ dinfo->bus = scsibus->busnr;
+ scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit,
+ false, -1, NULL);
+ if (!scsidev) {
+ return -1;
+ }
+ dinfo->unit = scsidev->id;
+
+ if (printinfo)
+ monitor_printf(mon, "OK bus %d, unit %d\n",
+ scsibus->busnr, scsidev->id);
+ return 0;
+}
+
+int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
+{
+ int pci_bus;
+ unsigned slot;
+ PCIBus *root = pci_find_primary_bus();
+ PCIDevice *dev;
+ const char *pci_addr = qdict_get_str(qdict, "pci_addr");
+
+ switch (dinfo->type) {
+ case IF_SCSI:
+ if (!root) {
+ monitor_printf(mon, "no primary PCI bus (if there are multiple"
+ " PCI roots, you must use device_add instead)");
+ goto err;
+ }
+ if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
+ goto err;
+ }
+ dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
+ if (!dev) {
+ monitor_printf(mon, "no pci device with address %s\n", pci_addr);
+ goto err;
+ }
+ if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
+ goto err;
+ }
+ break;
+ default:
+ monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
+ goto err;
+ }
+
+ return 0;
+err:
+ return -1;
+}
+
+static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
+ const char *devaddr,
+ const char *opts)
+{
+ PCIDevice *dev;
+ DriveInfo *dinfo = NULL;
+ int type = -1;
+ char buf[128];
+ PCIBus *root = pci_find_primary_bus();
+ PCIBus *bus;
+ int devfn;
+
+ if (get_param_value(buf, sizeof(buf), "if", opts)) {
+ if (!strcmp(buf, "scsi"))
+ type = IF_SCSI;
+ else if (!strcmp(buf, "virtio")) {
+ type = IF_VIRTIO;
+ } else {
+ monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
+ return NULL;
+ }
+ } else {
+ monitor_printf(mon, "no if= specified\n");
+ return NULL;
+ }
+
+ if (get_param_value(buf, sizeof(buf), "file", opts)) {
+ dinfo = add_init_drive(opts);
+ if (!dinfo)
+ return NULL;
+ if (dinfo->devaddr) {
+ monitor_printf(mon, "Parameter addr not supported\n");
+ return NULL;
+ }
+ } else {
+ dinfo = NULL;
+ }
+
+ if (!root) {
+ monitor_printf(mon, "no primary PCI bus (if there are multiple"
+ " PCI roots, you must use device_add instead)");
+ return NULL;
+ }
+ bus = pci_get_bus_devfn(&devfn, root, devaddr);
+ if (!bus) {
+ monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
+ return NULL;
+ }
+ if (!((BusState*)bus)->allow_hotplug) {
+ monitor_printf(mon, "PCI bus doesn't support hotplug\n");
+ return NULL;
+ }
+
+ switch (type) {
+ case IF_SCSI:
+ dev = pci_create(bus, devfn, "lsi53c895a");
+ if (qdev_init(&dev->qdev) < 0)
+ dev = NULL;
+ if (dev && dinfo) {
+ if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
+ qdev_unplug(&dev->qdev, NULL);
+ dev = NULL;
+ }
+ }
+ break;
+ case IF_VIRTIO:
+ if (!dinfo) {
+ monitor_printf(mon, "virtio requires a backing file/device.\n");
+ return NULL;
+ }
+ dev = pci_create(bus, devfn, "virtio-blk-pci");
+ if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
+ qdev_free(&dev->qdev);
+ dev = NULL;
+ break;
+ }
+ if (qdev_init(&dev->qdev) < 0)
+ dev = NULL;
+ break;
+ default:
+ dev = NULL;
+ }
+ return dev;
+}
+
+void pci_device_hot_add(Monitor *mon, const QDict *qdict)
+{
+ PCIDevice *dev = NULL;
+ const char *pci_addr = qdict_get_str(qdict, "pci_addr");
+ const char *type = qdict_get_str(qdict, "type");
+ const char *opts = qdict_get_try_str(qdict, "opts");
+
+ /* strip legacy tag */
+ if (!strncmp(pci_addr, "pci_addr=", 9)) {
+ pci_addr += 9;
+ }
+
+ if (!opts) {
+ opts = "";
+ }
+
+ if (!strcmp(pci_addr, "auto"))
+ pci_addr = NULL;
+
+ if (strcmp(type, "nic") == 0) {
+ dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
+ } else if (strcmp(type, "storage") == 0) {
+ dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
+ } else {
+ monitor_printf(mon, "invalid type: %s\n", type);
+ }
+
+ if (dev) {
+ monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
+ pci_root_bus_path(dev),
+ pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn));
+ } else
+ monitor_printf(mon, "failed to add %s\n", opts);
+}
+
+static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
+{
+ PCIBus *root = pci_find_primary_bus();
+ PCIDevice *d;
+ int bus;
+ unsigned slot;
+ Error *local_err = NULL;
+
+ if (!root) {
+ monitor_printf(mon, "no primary PCI bus (if there are multiple"
+ " PCI roots, you must use device_del instead)");
+ return -1;
+ }
+
+ if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
+ return -1;
+ }
+
+ d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
+ if (!d) {
+ monitor_printf(mon, "slot %d empty\n", slot);
+ return -1;
+ }
+
+ qdev_unplug(&d->qdev, &local_err);
+ if (error_is_set(&local_err)) {
+ monitor_printf(mon, "%s\n", error_get_pretty(local_err));
+ error_free(local_err);
+ return -1;
+ }
+
+ return 0;
+}
+
+void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
+{
+ pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
+}