qemu/hw/boards.h
Christian Borntraeger 2d0d2837dc Support default block interfaces per QEMUMachine
There are QEMUMachines that have neither IF_IDE nor IF_SCSI as a
default/standard interface to their block devices / drives. Therefore,
this patch introduces a new field default_block_type per QEMUMachine
struct. The prior use_scsi field becomes thereby obsolete and is
replaced through .default_block_type = IF_SCSI.

This patch also changes the default for s390x to IF_VIRTIO and
removes an early hack that converts IF_IDE drives.
Other parties have already claimed interest (e.g. IF_SD for exynos)

To create a sane default, for machines that dont specify a
default_block_type, this patch makes IF_IDE = 0 and IF_NONE = 1.
I checked all users of IF_NONE (blockdev.c and ww/device-hotplug.c)
as well as IF_IDE and it seems that it is ok to change the defines -
in other words, I found no obvious (to me) assumption in the code
regarding IF_NONE==0. IF_NONE is only set if there is an
explicit if=none. Without if=* the interface becomes IF_DEFAULT.

I would suggest to have some additional care, e.g. by letting
this patch sit some days in the block tree.

Based on an initial patch from Einar Lueck <elelueck@de.ibm.com>

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
CC: Igor Mitsyanko <i.mitsyanko@samsung.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Acked-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-12-11 11:05:10 +01:00

49 lines
1.1 KiB
C

/* Declarations for use by board files for creating devices. */
#ifndef HW_BOARDS_H
#define HW_BOARDS_H
#include "blockdev.h"
#include "qdev.h"
typedef struct QEMUMachineInitArgs {
ram_addr_t ram_size;
const char *boot_device;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
const char *cpu_model;
} QEMUMachineInitArgs;
typedef void QEMUMachineInitFunc(QEMUMachineInitArgs *args);
typedef void QEMUMachineResetFunc(void);
typedef struct QEMUMachine {
const char *name;
const char *alias;
const char *desc;
QEMUMachineInitFunc *init;
QEMUMachineResetFunc *reset;
BlockInterfaceType block_default_type;
int max_cpus;
unsigned int no_serial:1,
no_parallel:1,
use_virtcon:1,
no_floppy:1,
no_cdrom:1,
no_sdcard:1;
int is_default;
const char *default_machine_opts;
GlobalProperty *compat_props;
struct QEMUMachine *next;
const char *hw_version;
} QEMUMachine;
int qemu_register_machine(QEMUMachine *m);
QEMUMachine *find_default_machine(void);
extern QEMUMachine *current_machine;
#endif