/*
* Allocate quota master target and initialize it.
*
* \param env - is the environment passed by the caller
* \param ldt - is the device type structure associated with the qmt
* \param cfg - is the configuration record used to configure the qmt
*
* \retval - lu_device structure associated with the qmt on success,
* appropriate error on failure
*/
static struct lu_device *qmt_device_alloc(const struct lu_env *env,
struct lu_device_type *ldt,
struct lustre_cfg *cfg)
{
struct qmt_device *qmt;
struct lu_device *ld;
int rc;
ENTRY;
/* allocate qmt device */
OBD_ALLOC_PTR(qmt);
if (qmt == NULL)
RETURN(ERR_PTR(-ENOMEM));
/* configure lu/dt_device */
ld = qmt2lu_dev(qmt);
dt_device_init(&qmt->qmt_dt_dev, ldt);
ld->ld_ops = &qmt_lu_ops;
/* initialize qmt device */
rc = qmt_device_init0(env, qmt, ldt, cfg);
if (rc != 0) {
qmt_device_free(env, ld);
RETURN(ERR_PTR(rc));
}
RETURN(ld);
}
static struct virtio_device *virtio_mmio_dt_bind(u32 devid)
{
struct virtio_mmio_device *vm_dev;
struct dt_device dt_dev;
struct dt_bus dt_bus;
struct vm_dt_info info;
int node;
if (!dt_available())
return NULL;
dt_bus_init_defaults(&dt_bus);
dt_bus.match = vm_dt_match;
info.devid = devid;
dt_device_init(&dt_dev, &dt_bus, &info);
node = dt_device_find_compatible(&dt_dev, "virtio,mmio");
assert(node >= 0 || node == -FDT_ERR_NOTFOUND);
if (node == -FDT_ERR_NOTFOUND)
return NULL;
vm_dev = calloc(1, sizeof(*vm_dev));
if (!vm_dev)
return NULL;
vm_dev->base = info.base;
vm_device_init(vm_dev);
return &vm_dev->vdev;
}
