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Add generic drive hotplugging 

The monitor command for hotplugging is in i386 specific code. This is just
plain wrong, as S390 just learned how to do hotplugging too and needs to
get drives for that.

So let's add a generic copy to generic code that handles drive_add in a
way that doesn't have pci dependencies. All pci specific code can then
be handled in a pci specific function.

Signed-off-by: Alexander Graf <agraf@suse.de>

---

v1 -> v2:

  - align generic drive_add to pci specific one
  - rework to split between generic and pci code

v2 -> v3:

  - remove comment
This commit is contained in:
Alexander Graf 2010-08-23 23:43:10 +02:00
parent 963d83c854
commit dd97aa8adc
3 changed files with 56 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
hw/device-hotplug.c
View File

@ -26,6 +26,9 @@
#include "boards.h"
#include "net.h"
#include "blockdev.h"
#include "qemu-config.h"
#include "sysemu.h"
#include "monitor.h"
DriveInfo *add_init_drive(const char *optstr)
{
@ -44,3 +47,47 @@ DriveInfo *add_init_drive(const char *optstr)
return dinfo;
}
#if !defined(TARGET_I386)
int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
DriveInfo *dinfo, int type)
{
/* On non-x86 we don't do PCI hotplug */
monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
return -1;
}
#endif
void drive_hot_add(Monitor *mon, const QDict *qdict)
{
int type;
DriveInfo *dinfo = NULL;
const char *opts = qdict_get_str(qdict, "opts");
dinfo = add_init_drive(opts);
if (!dinfo) {
goto err;
}
if (dinfo->devaddr) {
monitor_printf(mon, "Parameter addr not supported\n");
goto err;
}
type = dinfo->type;
switch (type) {
case IF_NONE:
monitor_printf(mon, "OK\n");
break;
default:
if (pci_drive_hot_add(mon, qdict, dinfo, type)) {
goto err;
}
}
return;
err:
if (dinfo) {
drive_put_ref(dinfo);
}
return;
}

24
hw/pci-hotplug.c
View File

@ -104,24 +104,13 @@ static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
return 0;
}
void drive_hot_add(Monitor *mon, const QDict *qdict)
int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
DriveInfo *dinfo, int type)
{
int dom, pci_bus;
unsigned slot;
int type;
PCIDevice *dev;
DriveInfo *dinfo = NULL;
const char *pci_addr = qdict_get_str(qdict, "pci_addr");
const char *opts = qdict_get_str(qdict, "opts");
dinfo = add_init_drive(opts);
if (!dinfo)
goto err;
if (dinfo->devaddr) {
monitor_printf(mon, "Parameter addr not supported\n");
goto err;
}
type = dinfo->type;
switch (type) {
case IF_SCSI:
@ -138,19 +127,14 @@ void drive_hot_add(Monitor *mon, const QDict *qdict)
goto err;
}
break;
case IF_NONE:
monitor_printf(mon, "OK\n");
break;
default:
monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
goto err;
}
return;
return 0;
err:
if (dinfo)
drive_put_ref(dinfo);
return;
return -1;
}
static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,

6
sysemu.h
View File

@ -143,9 +143,13 @@ extern unsigned int nb_prom_envs;
/* pci-hotplug */
void pci_device_hot_add(Monitor *mon, const QDict *qdict);
void drive_hot_add(Monitor *mon, const QDict *qdict);
int pci_drive_hot_add(Monitor *mon, const QDict *qdict,
DriveInfo *dinfo, int type);
void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict);
/* generic hotplug */
void drive_hot_add(Monitor *mon, const QDict *qdict);
/* pcie aer error injection */
void pcie_aer_inject_error_print(Monitor *mon, const QObject *data);
int do_pcie_aer_inject_error(Monitor *mon,