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qemu: PCI device, disk and host network hot-add / hot-remove (Marcelo Tosatti)

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Add monitor command to hot-add PCI devices (nic and storage).
    
Syntax is:
    
pci_add pci_addr=[[<domain>:]<bus>:]<slot> nic|storage params
    
It returns the domain, bus and slot for the newly added device on success.
    
It is possible to attach a disk to a device after PCI initialization via
the drive_add command. If so, a manual scan of the SCSI bus on the guest
is necessary.
    
Save QEMUMachine necessary for drive_init.
    
Add monitor command to hot-remove devices, remove device data on _EJ0 notification.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6610 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-02-11 15:21:54 +00:00
parent 880345c484
commit 6f338c3469
11 changed files with 403 additions and 0 deletions
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85
hw/device-hotplug.c Normal file
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/*
* QEMU device hotplug helpers
*
* 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.h"
#include "boards.h"
#include "net.h"
#include "block_int.h"
#include "sysemu.h"
int add_init_drive(const char *opts)
{
int drive_opt_idx, drive_idx;
int ret = -1;
drive_opt_idx = drive_add(NULL, "%s", opts);
if (!drive_opt_idx)
return ret;
drive_idx = drive_init(&drives_opt[drive_opt_idx], 0, current_machine);
if (drive_idx == -1) {
drive_remove(drive_opt_idx);
return ret;
}
return drive_idx;
}
void destroy_nic(dev_match_fn *match_fn, void *arg)
{
int i;
NICInfo *nic;
for (i = 0; i < MAX_NICS; i++)
nic = &nd_table[i];
if (nic->used) {
if (nic->private && match_fn(nic->private, arg)) {
if (nic->vlan) {
VLANClientState *vc;
vc = qemu_find_vlan_client(nic->vlan, nic->private);
if (vc)
qemu_del_vlan_client(vc);
}
net_client_uninit(nic);
}
}
}
void destroy_bdrvs(dev_match_fn *match_fn, void *arg)
{
int i;
struct BlockDriverState *bs;
for (i = 0; i <= MAX_DRIVES; i++) {
bs = drives_table[i].bdrv;
if (bs) {
if (bs->private && match_fn(bs->private, arg)) {
drive_uninit(bs);
bdrv_delete(bs);
}
}
}
}