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qdev: support to get a device firmware path directly 

commit 6b1566c (qdev: Introduce FWPathProvider interface) did a
good job for supproting to get firmware path on some different
architectures.

Moreover further more, we can use the interface to get firmware
path name for a device which isn't attached a specific bus,
such as virtio-bus, scsi-bus etc.

When the device (such as vhost-scsi) realize the TYPE_FW_PATH_PROVIDER
interface, we should introduce a new function to get the correct firmware
path name for it.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Gonglei 2015-01-29 15:08:51 +08:00 committed by Paolo Bonzini
parent edecf5eced
commit 0be63901d2
3 changed files with 25 additions and 14 deletions
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31
bootdevice.c
View File

@ -210,7 +210,9 @@ char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
char *list = NULL;
QTAILQ_FOREACH(i, &fw_boot_order, link) {
char *devpath = NULL, *bootpath;
char *devpath = NULL, *suffix = NULL;
char *bootpath;
char *d;
size_t len;
if (i->dev) {
@ -218,21 +220,22 @@ char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
assert(devpath);
}
if (i->suffix && !ignore_suffixes && devpath) {
size_t bootpathlen = strlen(devpath) + strlen(i->suffix) + 1;
bootpath = g_malloc(bootpathlen);
snprintf(bootpath, bootpathlen, "%s%s", devpath, i->suffix);
g_free(devpath);
} else if (devpath) {
bootpath = devpath;
} else if (!ignore_suffixes) {
assert(i->suffix);
bootpath = g_strdup(i->suffix);
} else {
bootpath = g_strdup("");
if (!ignore_suffixes) {
d = qdev_get_own_fw_dev_path_from_handler(i->dev->parent_bus, i->dev);
if (d) {
assert(!i->suffix);
suffix = d;
} else {
suffix = g_strdup(i->suffix);
}
}
bootpath = g_strdup_printf("%s%s",
devpath ? devpath : "",
suffix ? suffix : "");
g_free(devpath);
g_free(suffix);
if (total) {
list[total-1] = '\n';
}

7
hw/core/qdev.c
View File

@ -818,6 +818,13 @@ static char *qdev_get_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
return d;
}
char *qdev_get_own_fw_dev_path_from_handler(BusState *bus, DeviceState *dev)
{
Object *obj = OBJECT(dev);
return fw_path_provider_try_get_dev_path(obj, bus, dev);
}
static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
{
int l = 0;

1
include/hw/qdev-core.h
View File

@ -342,6 +342,7 @@ void qbus_reset_all_fn(void *opaque);
BusState *sysbus_get_default(void);
char *qdev_get_fw_dev_path(DeviceState *dev);
char *qdev_get_own_fw_dev_path_from_handler(BusState *bus, DeviceState *dev);
/**
* @qdev_machine_init