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hw/ufs: avoid generating the same ID string for different LU devices

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QEMU would not start when trying to create two UFS host controllers and
a UFS logical unit for each with the following options:

-device ufs,id=bus0 \
-device ufs-lu,drive=drive1,bus=bus0,lun=0 \
-device ufs,id=bus1 \
-device ufs-lu,drive=drive2,bus=bus1,lun=0 \

This is because the same ID string ("0:0:0/scsi-disk") is generated
for both UFS logical units.

To fix this issue, prepend the parent pci device's path to make
the ID string unique.
("0000:00:03.0/0:0:0/scsi-disk" and "0000:00:04.0/0:0:0/scsi-disk")

Resolves: #2018
Fixes: 096434fea1 ("hw/ufs: Modify lu.c to share codes with SCSI subsystem")
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Jeuk Kim <jeuk20.kim@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231204150543.48252-1-akinobu.mita@gmail.com>
Signed-off-by: Jeuk Kim <jeuk20.kim@samsung.com>
This commit is contained in:
Akinobu Mita 2023-12-05 00:05:43 +09:00 committed by Jeuk Kim
parent 1664d74c50
commit 80a37b039e
1 changed files with 8 additions and 0 deletions
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8
hw/ufs/ufs.c
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@ -1323,9 +1323,17 @@ static bool ufs_bus_check_address(BusState *qbus, DeviceState *qdev,
return true;
}
static char *ufs_bus_get_dev_path(DeviceState *dev)
{
BusState *bus = qdev_get_parent_bus(dev);
return qdev_get_dev_path(bus->parent);
}
static void ufs_bus_class_init(ObjectClass *class, void *data)
{
BusClass *bc = BUS_CLASS(class);
bc->get_dev_path = ufs_bus_get_dev_path;
bc->check_address = ufs_bus_check_address;
}