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/*
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 * QEMU PCI hotplug support
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 *
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 * Copyright (c) 2004 Fabrice Bellard
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include "hw.h"
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#include "boards.h"
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#include "pci.h"
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#include "net.h"
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#include "pc.h"
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#include "monitor.h"
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#include "scsi.h"
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#include "virtio-blk.h"
33 c59c7ea9 Mark McLoughlin
#include "qemu-config.h"
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#include "blockdev.h"
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36 ce88f890 Juan Quintela
#if defined(TARGET_I386)
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static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
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                                       const char *devaddr,
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                                       const char *opts_str)
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{
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    QemuOpts *opts;
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    PCIBus *bus;
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    int ret, devfn;
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    bus = pci_get_bus_devfn(&devfn, devaddr);
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    if (!bus) {
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        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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        return NULL;
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    }
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    if (!((BusState*)bus)->allow_hotplug) {
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        monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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        return NULL;
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    }
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55 3329f07b Gerd Hoffmann
    opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
56 c59c7ea9 Mark McLoughlin
    if (!opts) {
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        return NULL;
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    }
59 c59c7ea9 Mark McLoughlin
60 c59c7ea9 Mark McLoughlin
    qemu_opt_set(opts, "type", "nic");
61 c59c7ea9 Mark McLoughlin
62 f6b134ac Mark McLoughlin
    ret = net_client_init(mon, opts, 0);
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    if (ret < 0)
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        return NULL;
65 5607c388 Markus Armbruster
    if (nd_table[ret].devaddr) {
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        monitor_printf(mon, "Parameter addr not supported\n");
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        return NULL;
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    }
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    return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
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}
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72 6fdb03d5 Markus Armbruster
static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
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                        DriveInfo *dinfo, int printinfo)
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{
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    SCSIBus *scsibus;
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    SCSIDevice *scsidev;
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    scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
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    if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
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        error_report("Device is not a SCSI adapter");
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        return -1;
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    }
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    /*
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     * drive_init() tries to find a default for dinfo->unit.  Doesn't
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     * work at all for hotplug though as we assign the device to a
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     * specific bus instead of the first bus with spare scsi ids.
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     *
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     * Ditch the calculated value and reload from option string (if
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     * specified).
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     */
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    dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
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    dinfo->bus = scsibus->busnr;
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    scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo->bdrv, dinfo->unit, false);
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    if (!scsidev) {
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        return -1;
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    }
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    dinfo->unit = scsidev->id;
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    if (printinfo)
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        monitor_printf(mon, "OK bus %d, unit %d\n",
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                       scsibus->busnr, scsidev->id);
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    return 0;
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}
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void drive_hot_add(Monitor *mon, const QDict *qdict)
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{
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    int dom, pci_bus;
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    unsigned slot;
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    int type;
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    PCIDevice *dev;
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    DriveInfo *dinfo = NULL;
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    const char *pci_addr = qdict_get_str(qdict, "pci_addr");
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    const char *opts = qdict_get_str(qdict, "opts");
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    dinfo = add_init_drive(opts);
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    if (!dinfo)
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        goto err;
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    if (dinfo->devaddr) {
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        monitor_printf(mon, "Parameter addr not supported\n");
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        goto err;
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    }
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    type = dinfo->type;
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    switch (type) {
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    case IF_SCSI:
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        if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
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            goto err;
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        }
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        dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0);
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        if (!dev) {
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            monitor_printf(mon, "no pci device with address %s\n", pci_addr);
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            goto err;
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        }
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        if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
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            goto err;
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        }
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        break;
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    case IF_NONE:
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        monitor_printf(mon, "OK\n");
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        break;
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    default:
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        monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
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        goto err;
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    }
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    return;
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err:
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    if (dinfo)
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        drive_put_ref(dinfo);
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    return;
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}
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static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
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                                           const char *devaddr,
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                                           const char *opts)
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{
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    PCIDevice *dev;
159 06c79f4e Sebastian Herbszt
    DriveInfo *dinfo = NULL;
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    int type = -1;
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    char buf[128];
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    PCIBus *bus;
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    int devfn;
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    if (get_param_value(buf, sizeof(buf), "if", opts)) {
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        if (!strcmp(buf, "scsi"))
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            type = IF_SCSI;
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        else if (!strcmp(buf, "virtio")) {
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            type = IF_VIRTIO;
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        } else {
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            monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
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            return NULL;
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        }
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    } else {
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        monitor_printf(mon, "no if= specified\n");
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        return NULL;
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    }
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    if (get_param_value(buf, sizeof(buf), "file", opts)) {
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        dinfo = add_init_drive(opts);
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        if (!dinfo)
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            return NULL;
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        if (dinfo->devaddr) {
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            monitor_printf(mon, "Parameter addr not supported\n");
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            return NULL;
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        }
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    } else {
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        dinfo = NULL;
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    }
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191 49bd1458 Markus Armbruster
    bus = pci_get_bus_devfn(&devfn, devaddr);
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    if (!bus) {
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        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
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        return NULL;
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    }
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    if (!((BusState*)bus)->allow_hotplug) {
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        monitor_printf(mon, "PCI bus doesn't support hotplug\n");
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        return NULL;
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    }
200 49bd1458 Markus Armbruster
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    switch (type) {
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    case IF_SCSI:
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        dev = pci_create(bus, devfn, "lsi53c895a");
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        if (qdev_init(&dev->qdev) < 0)
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            dev = NULL;
206 ec7efac4 Daniel P. Berrange
        if (dev && dinfo) {
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            if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
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                qdev_unplug(&dev->qdev);
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                dev = NULL;
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            }
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        }
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        break;
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    case IF_VIRTIO:
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        if (!dinfo) {
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            monitor_printf(mon, "virtio requires a backing file/device.\n");
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            return NULL;
217 7432ff5d Blue Swirl
        }
218 499cf102 Markus Armbruster
        dev = pci_create(bus, devfn, "virtio-blk-pci");
219 18846dee Markus Armbruster
        if (qdev_prop_set_drive(&dev->qdev, "drive", dinfo->bdrv) < 0) {
220 18846dee Markus Armbruster
            qdev_free(&dev->qdev);
221 18846dee Markus Armbruster
            dev = NULL;
222 18846dee Markus Armbruster
            break;
223 18846dee Markus Armbruster
        }
224 5b684b5a Gerd Hoffmann
        if (qdev_init(&dev->qdev) < 0)
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            dev = NULL;
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        break;
227 1f5f6638 Markus Armbruster
    default:
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        dev = NULL;
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    }
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    return dev;
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}
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233 6c6a58ae Markus Armbruster
void pci_device_hot_add(Monitor *mon, const QDict *qdict)
234 6f338c34 aliguori
{
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    PCIDevice *dev = NULL;
236 1d4daa91 Luiz Capitulino
    const char *pci_addr = qdict_get_str(qdict, "pci_addr");
237 1d4daa91 Luiz Capitulino
    const char *type = qdict_get_str(qdict, "type");
238 1d4daa91 Luiz Capitulino
    const char *opts = qdict_get_try_str(qdict, "opts");
239 6f338c34 aliguori
240 e9283f8b Jan Kiszka
    /* strip legacy tag */
241 e9283f8b Jan Kiszka
    if (!strncmp(pci_addr, "pci_addr=", 9)) {
242 e9283f8b Jan Kiszka
        pci_addr += 9;
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    }
244 6f338c34 aliguori
245 a62acdc0 Jan Kiszka
    if (!opts) {
246 a62acdc0 Jan Kiszka
        opts = "";
247 a62acdc0 Jan Kiszka
    }
248 a62acdc0 Jan Kiszka
249 e9283f8b Jan Kiszka
    if (!strcmp(pci_addr, "auto"))
250 e9283f8b Jan Kiszka
        pci_addr = NULL;
251 6f338c34 aliguori
252 395560c8 Luiz Capitulino
    if (strcmp(type, "nic") == 0) {
253 e9283f8b Jan Kiszka
        dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
254 395560c8 Luiz Capitulino
    } else if (strcmp(type, "storage") == 0) {
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        dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
256 395560c8 Luiz Capitulino
    } else {
257 376253ec aliguori
        monitor_printf(mon, "invalid type: %s\n", type);
258 395560c8 Luiz Capitulino
    }
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    if (dev) {
261 6c6a58ae Markus Armbruster
        monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
262 e075e788 Isaku Yamahata
                       pci_find_domain(dev->bus),
263 e075e788 Isaku Yamahata
                       pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
264 6c6a58ae Markus Armbruster
                       PCI_FUNC(dev->devfn));
265 6c6a58ae Markus Armbruster
    } else
266 376253ec aliguori
        monitor_printf(mon, "failed to add %s\n", opts);
267 6f338c34 aliguori
}
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#endif
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270 f2b07c92 Isaku Yamahata
static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
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{
272 6f338c34 aliguori
    PCIDevice *d;
273 6f338c34 aliguori
    int dom, bus;
274 6f338c34 aliguori
    unsigned slot;
275 6f338c34 aliguori
276 e9283f8b Jan Kiszka
    if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
277 053801bc Luiz Capitulino
        return -1;
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    }
279 6f338c34 aliguori
280 e075e788 Isaku Yamahata
    d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0);
281 6f338c34 aliguori
    if (!d) {
282 376253ec aliguori
        monitor_printf(mon, "slot %d empty\n", slot);
283 053801bc Luiz Capitulino
        return -1;
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    }
285 053801bc Luiz Capitulino
    return qdev_unplug(&d->qdev);
286 6f338c34 aliguori
}
287 6f338c34 aliguori
288 b752daf0 Markus Armbruster
void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
289 38183186 Luiz Capitulino
{
290 b752daf0 Markus Armbruster
    pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
291 38183186 Luiz Capitulino
}