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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c')
-rw-r--r-- | drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c new file mode 100644 index 000000000..ba43ad078 --- /dev/null +++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c @@ -0,0 +1,306 @@ +/* + * Copyright (c) 2012-2016 VMware, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of EITHER the GNU General Public License + * version 2 as published by the Free Software Foundation or the BSD + * 2-Clause License. This program is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED + * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License version 2 for more details at + * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html. + * + * You should have received a copy of the GNU General Public License + * along with this program available in the file COPYING in the main + * directory of this source tree. + * + * The BSD 2-Clause License + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/bitmap.h> + +#include "pvrdma.h" + +int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir, + u64 npages, bool alloc_pages) +{ + u64 i; + + if (npages > PVRDMA_PAGE_DIR_MAX_PAGES) + return -EINVAL; + + memset(pdir, 0, sizeof(*pdir)); + + pdir->dir = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE, + &pdir->dir_dma, GFP_KERNEL); + if (!pdir->dir) + goto err; + + pdir->ntables = PVRDMA_PAGE_DIR_TABLE(npages - 1) + 1; + pdir->tables = kcalloc(pdir->ntables, sizeof(*pdir->tables), + GFP_KERNEL); + if (!pdir->tables) + goto err; + + for (i = 0; i < pdir->ntables; i++) { + pdir->tables[i] = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE, + (dma_addr_t *)&pdir->dir[i], + GFP_KERNEL); + if (!pdir->tables[i]) + goto err; + } + + pdir->npages = npages; + + if (alloc_pages) { + pdir->pages = kcalloc(npages, sizeof(*pdir->pages), + GFP_KERNEL); + if (!pdir->pages) + goto err; + + for (i = 0; i < pdir->npages; i++) { + dma_addr_t page_dma; + + pdir->pages[i] = dma_alloc_coherent(&dev->pdev->dev, + PAGE_SIZE, + &page_dma, + GFP_KERNEL); + if (!pdir->pages[i]) + goto err; + + pvrdma_page_dir_insert_dma(pdir, i, page_dma); + } + } + + return 0; + +err: + pvrdma_page_dir_cleanup(dev, pdir); + + return -ENOMEM; +} + +static u64 *pvrdma_page_dir_table(struct pvrdma_page_dir *pdir, u64 idx) +{ + return pdir->tables[PVRDMA_PAGE_DIR_TABLE(idx)]; +} + +dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx) +{ + return pvrdma_page_dir_table(pdir, idx)[PVRDMA_PAGE_DIR_PAGE(idx)]; +} + +static void pvrdma_page_dir_cleanup_pages(struct pvrdma_dev *dev, + struct pvrdma_page_dir *pdir) +{ + if (pdir->pages) { + u64 i; + + for (i = 0; i < pdir->npages && pdir->pages[i]; i++) { + dma_addr_t page_dma = pvrdma_page_dir_get_dma(pdir, i); + + dma_free_coherent(&dev->pdev->dev, PAGE_SIZE, + pdir->pages[i], page_dma); + } + + kfree(pdir->pages); + } +} + +static void pvrdma_page_dir_cleanup_tables(struct pvrdma_dev *dev, + struct pvrdma_page_dir *pdir) +{ + if (pdir->tables) { + int i; + + pvrdma_page_dir_cleanup_pages(dev, pdir); + + for (i = 0; i < pdir->ntables; i++) { + u64 *table = pdir->tables[i]; + + if (table) + dma_free_coherent(&dev->pdev->dev, PAGE_SIZE, + table, pdir->dir[i]); + } + + kfree(pdir->tables); + } +} + +void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev, + struct pvrdma_page_dir *pdir) +{ + if (pdir->dir) { + pvrdma_page_dir_cleanup_tables(dev, pdir); + dma_free_coherent(&dev->pdev->dev, PAGE_SIZE, + pdir->dir, pdir->dir_dma); + } +} + +int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx, + dma_addr_t daddr) +{ + u64 *table; + + if (idx >= pdir->npages) + return -EINVAL; + + table = pvrdma_page_dir_table(pdir, idx); + table[PVRDMA_PAGE_DIR_PAGE(idx)] = daddr; + + return 0; +} + +int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir, + struct ib_umem *umem, u64 offset) +{ + struct ib_block_iter biter; + u64 i = offset; + int ret = 0; + + if (offset >= pdir->npages) + return -EINVAL; + + rdma_umem_for_each_dma_block (umem, &biter, PAGE_SIZE) { + ret = pvrdma_page_dir_insert_dma( + pdir, i, rdma_block_iter_dma_address(&biter)); + if (ret) + goto exit; + + i++; + } + +exit: + return ret; +} + +int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir, + u64 *page_list, + int num_pages) +{ + int i; + int ret; + + if (num_pages > pdir->npages) + return -EINVAL; + + for (i = 0; i < num_pages; i++) { + ret = pvrdma_page_dir_insert_dma(pdir, i, page_list[i]); + if (ret) + return ret; + } + + return 0; +} + +void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst, const struct pvrdma_qp_cap *src) +{ + dst->max_send_wr = src->max_send_wr; + dst->max_recv_wr = src->max_recv_wr; + dst->max_send_sge = src->max_send_sge; + dst->max_recv_sge = src->max_recv_sge; + dst->max_inline_data = src->max_inline_data; +} + +void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst, const struct ib_qp_cap *src) +{ + dst->max_send_wr = src->max_send_wr; + dst->max_recv_wr = src->max_recv_wr; + dst->max_send_sge = src->max_send_sge; + dst->max_recv_sge = src->max_recv_sge; + dst->max_inline_data = src->max_inline_data; +} + +void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src) +{ + BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid)); + memcpy(dst, src, sizeof(*src)); +} + +void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src) +{ + BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid)); + memcpy(dst, src, sizeof(*src)); +} + +void pvrdma_global_route_to_ib(struct ib_global_route *dst, + const struct pvrdma_global_route *src) +{ + pvrdma_gid_to_ib(&dst->dgid, &src->dgid); + dst->flow_label = src->flow_label; + dst->sgid_index = src->sgid_index; + dst->hop_limit = src->hop_limit; + dst->traffic_class = src->traffic_class; +} + +void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst, + const struct ib_global_route *src) +{ + ib_gid_to_pvrdma(&dst->dgid, &src->dgid); + dst->flow_label = src->flow_label; + dst->sgid_index = src->sgid_index; + dst->hop_limit = src->hop_limit; + dst->traffic_class = src->traffic_class; +} + +void pvrdma_ah_attr_to_rdma(struct rdma_ah_attr *dst, + const struct pvrdma_ah_attr *src) +{ + dst->type = RDMA_AH_ATTR_TYPE_ROCE; + pvrdma_global_route_to_ib(rdma_ah_retrieve_grh(dst), &src->grh); + rdma_ah_set_dlid(dst, src->dlid); + rdma_ah_set_sl(dst, src->sl); + rdma_ah_set_path_bits(dst, src->src_path_bits); + rdma_ah_set_static_rate(dst, src->static_rate); + rdma_ah_set_ah_flags(dst, src->ah_flags); + rdma_ah_set_port_num(dst, src->port_num); + memcpy(dst->roce.dmac, &src->dmac, ETH_ALEN); +} + +void rdma_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst, + const struct rdma_ah_attr *src) +{ + ib_global_route_to_pvrdma(&dst->grh, rdma_ah_read_grh(src)); + dst->dlid = rdma_ah_get_dlid(src); + dst->sl = rdma_ah_get_sl(src); + dst->src_path_bits = rdma_ah_get_path_bits(src); + dst->static_rate = rdma_ah_get_static_rate(src); + dst->ah_flags = rdma_ah_get_ah_flags(src); + dst->port_num = rdma_ah_get_port_num(src); + memcpy(&dst->dmac, src->roce.dmac, sizeof(dst->dmac)); +} + +u8 ib_gid_type_to_pvrdma(enum ib_gid_type gid_type) +{ + return (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ? + PVRDMA_GID_TYPE_FLAG_ROCE_V2 : + PVRDMA_GID_TYPE_FLAG_ROCE_V1; +} |