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![Chengchang Tang](/assets/img/avatar_default.png)
HIP06 is no longer supported. In order to reduce unnecessary maintenance, the code of HIP06 is removed. Link: https://lore.kernel.org/r/20211220130558.61585-1-liangwenpeng@huawei.com Signed-off-by: Chengchang Tang <tangchengchang@huawei.com> Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
186 lines
5.2 KiB
C
186 lines
5.2 KiB
C
/*
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* Copyright (c) 2016 Hisilicon Limited.
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* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/vmalloc.h>
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#include <rdma/ib_umem.h>
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#include "hns_roce_device.h"
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void hns_roce_buf_free(struct hns_roce_dev *hr_dev, struct hns_roce_buf *buf)
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{
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struct hns_roce_buf_list *trunks;
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u32 i;
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if (!buf)
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return;
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trunks = buf->trunk_list;
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if (trunks) {
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buf->trunk_list = NULL;
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for (i = 0; i < buf->ntrunks; i++)
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dma_free_coherent(hr_dev->dev, 1 << buf->trunk_shift,
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trunks[i].buf, trunks[i].map);
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kfree(trunks);
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}
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kfree(buf);
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}
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/*
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* Allocate the dma buffer for storing ROCEE table entries
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*
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* @size: required size
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* @page_shift: the unit size in a continuous dma address range
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* @flags: HNS_ROCE_BUF_ flags to control the allocation flow.
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*/
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struct hns_roce_buf *hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size,
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u32 page_shift, u32 flags)
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{
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u32 trunk_size, page_size, alloced_size;
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struct hns_roce_buf_list *trunks;
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struct hns_roce_buf *buf;
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gfp_t gfp_flags;
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u32 ntrunk, i;
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/* The minimum shift of the page accessed by hw is HNS_HW_PAGE_SHIFT */
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if (WARN_ON(page_shift < HNS_HW_PAGE_SHIFT))
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return ERR_PTR(-EINVAL);
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gfp_flags = (flags & HNS_ROCE_BUF_NOSLEEP) ? GFP_ATOMIC : GFP_KERNEL;
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buf = kzalloc(sizeof(*buf), gfp_flags);
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if (!buf)
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return ERR_PTR(-ENOMEM);
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buf->page_shift = page_shift;
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page_size = 1 << buf->page_shift;
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/* Calc the trunk size and num by required size and page_shift */
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if (flags & HNS_ROCE_BUF_DIRECT) {
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buf->trunk_shift = order_base_2(ALIGN(size, PAGE_SIZE));
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ntrunk = 1;
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} else {
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buf->trunk_shift = order_base_2(ALIGN(page_size, PAGE_SIZE));
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ntrunk = DIV_ROUND_UP(size, 1 << buf->trunk_shift);
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}
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trunks = kcalloc(ntrunk, sizeof(*trunks), gfp_flags);
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if (!trunks) {
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kfree(buf);
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return ERR_PTR(-ENOMEM);
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}
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trunk_size = 1 << buf->trunk_shift;
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alloced_size = 0;
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for (i = 0; i < ntrunk; i++) {
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trunks[i].buf = dma_alloc_coherent(hr_dev->dev, trunk_size,
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&trunks[i].map, gfp_flags);
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if (!trunks[i].buf)
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break;
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alloced_size += trunk_size;
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}
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buf->ntrunks = i;
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/* In nofail mode, it's only failed when the alloced size is 0 */
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if ((flags & HNS_ROCE_BUF_NOFAIL) ? i == 0 : i != ntrunk) {
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for (i = 0; i < buf->ntrunks; i++)
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dma_free_coherent(hr_dev->dev, trunk_size,
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trunks[i].buf, trunks[i].map);
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kfree(trunks);
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kfree(buf);
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return ERR_PTR(-ENOMEM);
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}
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buf->npages = DIV_ROUND_UP(alloced_size, page_size);
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buf->trunk_list = trunks;
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return buf;
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}
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int hns_roce_get_kmem_bufs(struct hns_roce_dev *hr_dev, dma_addr_t *bufs,
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int buf_cnt, struct hns_roce_buf *buf,
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unsigned int page_shift)
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{
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unsigned int offset, max_size;
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int total = 0;
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int i;
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if (page_shift > buf->trunk_shift) {
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dev_err(hr_dev->dev, "failed to check kmem buf shift %u > %u\n",
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page_shift, buf->trunk_shift);
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return -EINVAL;
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}
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offset = 0;
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max_size = buf->ntrunks << buf->trunk_shift;
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for (i = 0; i < buf_cnt && offset < max_size; i++) {
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bufs[total++] = hns_roce_buf_dma_addr(buf, offset);
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offset += (1 << page_shift);
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}
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return total;
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}
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int hns_roce_get_umem_bufs(struct hns_roce_dev *hr_dev, dma_addr_t *bufs,
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int buf_cnt, struct ib_umem *umem,
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unsigned int page_shift)
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{
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struct ib_block_iter biter;
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int total = 0;
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/* convert system page cnt to hw page cnt */
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rdma_umem_for_each_dma_block(umem, &biter, 1 << page_shift) {
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bufs[total++] = rdma_block_iter_dma_address(&biter);
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if (total >= buf_cnt)
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goto done;
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}
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done:
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return total;
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}
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void hns_roce_cleanup_bitmap(struct hns_roce_dev *hr_dev)
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{
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if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_XRC)
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ida_destroy(&hr_dev->xrcd_ida.ida);
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if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_SRQ)
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ida_destroy(&hr_dev->srq_table.srq_ida.ida);
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hns_roce_cleanup_qp_table(hr_dev);
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hns_roce_cleanup_cq_table(hr_dev);
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ida_destroy(&hr_dev->mr_table.mtpt_ida.ida);
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ida_destroy(&hr_dev->pd_ida.ida);
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ida_destroy(&hr_dev->uar_ida.ida);
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}
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