/* * Copyright (c) 2016 Hisilicon Limited. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE.
*/
int hns_roce_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
{ struct ib_device *ib_dev = ibpd->device; struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev); struct hns_roce_ida *pd_ida = &hr_dev->pd_ida; struct hns_roce_pd *pd = to_hr_pd(ibpd); int ret = 0; int id;
id = ida_alloc_range(&pd_ida->ida, pd_ida->min, pd_ida->max,
GFP_KERNEL); if (id < 0) {
ibdev_err(ib_dev, "failed to alloc pd, id = %d.\n", id); return -ENOMEM;
}
pd->pdn = (unsignedlong)id;
if (udata) { struct hns_roce_ib_alloc_pd_resp resp = {.pdn = pd->pdn};
ret = ib_copy_to_udata(udata, &resp,
min(udata->outlen, sizeof(resp))); if (ret) {
ida_free(&pd_ida->ida, id);
ibdev_err(ib_dev, "failed to copy to udata, ret = %d\n", ret);
}
}
int hns_roce_uar_alloc(struct hns_roce_dev *hr_dev, struct hns_roce_uar *uar)
{ struct hns_roce_ida *uar_ida = &hr_dev->uar_ida; int id;
/* Using bitmap to manager UAR index */
id = ida_alloc_range(&uar_ida->ida, uar_ida->min, uar_ida->max,
GFP_KERNEL); if (id < 0) {
ibdev_err(&hr_dev->ib_dev, "failed to alloc uar id(%d).\n", id); return -ENOMEM;
}
uar->logic_idx = (unsignedlong)id;
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