/* * Copyright (c) 2016 Hisilicon Limited. * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. * * 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.
*/
trunk_size = 1 << buf->trunk_shift;
alloced_size = 0; for (i = 0; i < ntrunk; i++) {
trunks[i].buf = dma_alloc_coherent(hr_dev->dev, trunk_size,
&trunks[i].map, gfp_flags); if (!trunks[i].buf) break;
alloced_size += trunk_size;
}
buf->ntrunks = i;
/* In nofail mode, it's only failed when the alloced size is 0 */ if ((flags & HNS_ROCE_BUF_NOFAIL) ? i == 0 : i != ntrunk) { for (i = 0; i < buf->ntrunks; i++)
dma_free_coherent(hr_dev->dev, trunk_size,
trunks[i].buf, trunks[i].map);
int hns_roce_get_kmem_bufs(struct hns_roce_dev *hr_dev, dma_addr_t *bufs, int buf_cnt, struct hns_roce_buf *buf, unsignedint page_shift)
{ unsignedint offset, max_size; int total = 0; int i;
if (page_shift > buf->trunk_shift) {
dev_err(hr_dev->dev, "failed to check kmem buf shift %u > %u\n",
page_shift, buf->trunk_shift); return -EINVAL;
}
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