hw/device-hotplug.c

   1 /*
   2  * QEMU device hotplug helpers
   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 "net.h"
  28 #include "blockdev.h"
  29 #include "qemu-config.h"
  30 #include "sysemu.h"
  31 #include "monitor.h"
  32
  33 DriveInfo *add_init_drive(const char *optstr)
  34 {
  35     DriveInfo *dinfo;
  36     QemuOpts *opts;
  37
  38     opts = drive_def(optstr);
  39     if (!opts)
  40         return NULL;
  41
  42     dinfo = drive_init(opts, current_machine->use_scsi);
  43     if (!dinfo) {
  44         qemu_opts_del(opts);
  45         return NULL;
  46     }
  47
  48     return dinfo;
  49 }
  50
  51 #if !defined(TARGET_I386)
  52 int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
  53                       DriveInfo *dinfo, int type)
  54 {
  55     /* On non-x86 we don't do PCI hotplug */
  56     monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
  57     return -1;
  58 }
  59 #endif
  60
  61 void drive_hot_add(Monitor *mon, const QDict *qdict)
  62 {
  63     int type;
  64     DriveInfo *dinfo = NULL;
  65     const char *opts = qdict_get_str(qdict, "opts");
  66
  67     dinfo = add_init_drive(opts);
  68     if (!dinfo) {
  69         goto err;
  70     }
  71     if (dinfo->devaddr) {
  72         monitor_printf(mon, "Parameter addr not supported\n");
  73         goto err;
  74     }
  75     type = dinfo->type;
  76
  77     switch (type) {
  78     case IF_NONE:
  79         monitor_printf(mon, "OK\n");
  80         break;
  81     default:
  82         if (pci_drive_hot_add(mon, qdict, dinfo, type)) {
  83             goto err;
  84         }
  85     }
  86     return;
  87
  88 err:
  89     if (dinfo) {
  90         drive_put_ref(dinfo);
  91     }
  92 }