2 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/slab.h>
38 static u32 convert_access(int acc)
40 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX4_PERM_ATOMIC : 0) |
41 (acc & IB_ACCESS_REMOTE_WRITE ? MLX4_PERM_REMOTE_WRITE : 0) |
42 (acc & IB_ACCESS_REMOTE_READ ? MLX4_PERM_REMOTE_READ : 0) |
43 (acc & IB_ACCESS_LOCAL_WRITE ? MLX4_PERM_LOCAL_WRITE : 0) |
47 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
49 struct mlx4_ib_mr *mr;
52 mr = kmalloc(sizeof *mr, GFP_KERNEL);
54 return ERR_PTR(-ENOMEM);
56 err = mlx4_mr_alloc(to_mdev(pd->device)->dev, to_mpd(pd)->pdn, 0,
57 ~0ull, convert_access(acc), 0, 0, &mr->mmr);
61 err = mlx4_mr_enable(to_mdev(pd->device)->dev, &mr->mmr);
65 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
71 mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
79 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
83 struct ib_umem_chunk *chunk;
89 pages = (u64 *) __get_free_page(GFP_KERNEL);
95 list_for_each_entry(chunk, &umem->chunk_list, list)
96 for (j = 0; j < chunk->nmap; ++j) {
97 len = sg_dma_len(&chunk->page_list[j]) >> mtt->page_shift;
98 for (k = 0; k < len; ++k) {
99 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
102 * Be friendly to mlx4_write_mtt() and
103 * pass it chunks of appropriate size.
105 if (i == PAGE_SIZE / sizeof (u64)) {
106 err = mlx4_write_mtt(dev->dev, mtt, n,
117 err = mlx4_write_mtt(dev->dev, mtt, n, i, pages);
120 free_page((unsigned long) pages);
124 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
125 u64 virt_addr, int access_flags,
126 struct ib_udata *udata)
128 struct mlx4_ib_dev *dev = to_mdev(pd->device);
129 struct mlx4_ib_mr *mr;
134 mr = kmalloc(sizeof *mr, GFP_KERNEL);
136 return ERR_PTR(-ENOMEM);
138 mr->umem = ib_umem_get(pd->uobject->context, start, length,
140 if (IS_ERR(mr->umem)) {
141 err = PTR_ERR(mr->umem);
145 n = ib_umem_page_count(mr->umem);
146 shift = ilog2(mr->umem->page_size);
148 err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, virt_addr, length,
149 convert_access(access_flags), n, shift, &mr->mmr);
153 err = mlx4_ib_umem_write_mtt(dev, &mr->mmr.mtt, mr->umem);
157 err = mlx4_mr_enable(dev->dev, &mr->mmr);
161 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
166 mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
169 ib_umem_release(mr->umem);
177 int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
179 struct mlx4_ib_mr *mr = to_mmr(ibmr);
181 mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
183 ib_umem_release(mr->umem);
189 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
190 int max_page_list_len)
192 struct mlx4_ib_dev *dev = to_mdev(pd->device);
193 struct mlx4_ib_mr *mr;
196 mr = kmalloc(sizeof *mr, GFP_KERNEL);
198 return ERR_PTR(-ENOMEM);
200 err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, 0, 0, 0,
201 max_page_list_len, 0, &mr->mmr);
205 err = mlx4_mr_enable(dev->dev, &mr->mmr);
209 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
215 mlx4_mr_free(dev->dev, &mr->mmr);
222 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
225 struct mlx4_ib_dev *dev = to_mdev(ibdev);
226 struct mlx4_ib_fast_reg_page_list *mfrpl;
227 int size = page_list_len * sizeof (u64);
229 if (page_list_len > MLX4_MAX_FAST_REG_PAGES)
230 return ERR_PTR(-EINVAL);
232 mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL);
234 return ERR_PTR(-ENOMEM);
236 mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
237 if (!mfrpl->ibfrpl.page_list)
240 mfrpl->mapped_page_list = dma_alloc_coherent(&dev->dev->pdev->dev,
243 if (!mfrpl->mapped_page_list)
246 WARN_ON(mfrpl->map & 0x3f);
248 return &mfrpl->ibfrpl;
251 kfree(mfrpl->ibfrpl.page_list);
253 return ERR_PTR(-ENOMEM);
256 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
258 struct mlx4_ib_dev *dev = to_mdev(page_list->device);
259 struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
260 int size = page_list->max_page_list_len * sizeof (u64);
262 dma_free_coherent(&dev->dev->pdev->dev, size, mfrpl->mapped_page_list,
264 kfree(mfrpl->ibfrpl.page_list);
268 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
269 struct ib_fmr_attr *fmr_attr)
271 struct mlx4_ib_dev *dev = to_mdev(pd->device);
272 struct mlx4_ib_fmr *fmr;
275 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
277 return ERR_PTR(-ENOMEM);
279 err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc),
280 fmr_attr->max_pages, fmr_attr->max_maps,
281 fmr_attr->page_shift, &fmr->mfmr);
285 err = mlx4_fmr_enable(to_mdev(pd->device)->dev, &fmr->mfmr);
289 fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key;
294 mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
302 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
303 int npages, u64 iova)
305 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
306 struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device);
308 return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova,
309 &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
312 int mlx4_ib_unmap_fmr(struct list_head *fmr_list)
314 struct ib_fmr *ibfmr;
316 struct mlx4_dev *mdev = NULL;
318 list_for_each_entry(ibfmr, fmr_list, list) {
319 if (mdev && to_mdev(ibfmr->device)->dev != mdev)
321 mdev = to_mdev(ibfmr->device)->dev;
327 list_for_each_entry(ibfmr, fmr_list, list) {
328 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
330 mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
334 * Make sure all MPT status updates are visible before issuing
335 * SYNC_TPT firmware command.
339 err = mlx4_SYNC_TPT(mdev);
341 printk(KERN_WARNING "mlx4_ib: SYNC_TPT error %d when "
342 "unmapping FMRs\n", err);
347 int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
349 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
350 struct mlx4_ib_dev *dev = to_mdev(ibfmr->device);
353 err = mlx4_fmr_free(dev->dev, &ifmr->mfmr);