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) |
44 (acc & IB_ACCESS_MW_BIND ? MLX4_PERM_BIND_MW : 0) |
48 static enum mlx4_mw_type to_mlx4_type(enum ib_mw_type type)
51 case IB_MW_TYPE_1: return MLX4_MW_TYPE_1;
52 case IB_MW_TYPE_2: return MLX4_MW_TYPE_2;
57 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
59 struct mlx4_ib_mr *mr;
62 mr = kmalloc(sizeof *mr, GFP_KERNEL);
64 return ERR_PTR(-ENOMEM);
66 err = mlx4_mr_alloc(to_mdev(pd->device)->dev, to_mpd(pd)->pdn, 0,
67 ~0ull, convert_access(acc), 0, 0, &mr->mmr);
71 err = mlx4_mr_enable(to_mdev(pd->device)->dev, &mr->mmr);
75 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
81 (void) mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
89 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
97 struct scatterlist *sg;
99 pages = (u64 *) __get_free_page(GFP_KERNEL);
105 for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
106 len = sg_dma_len(sg) >> mtt->page_shift;
107 for (k = 0; k < len; ++k) {
108 pages[i++] = sg_dma_address(sg) +
111 * Be friendly to mlx4_write_mtt() and
112 * pass it chunks of appropriate size.
114 if (i == PAGE_SIZE / sizeof (u64)) {
115 err = mlx4_write_mtt(dev->dev, mtt, n,
126 err = mlx4_write_mtt(dev->dev, mtt, n, i, pages);
129 free_page((unsigned long) pages);
133 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
134 u64 virt_addr, int access_flags,
135 struct ib_udata *udata)
137 struct mlx4_ib_dev *dev = to_mdev(pd->device);
138 struct mlx4_ib_mr *mr;
143 mr = kmalloc(sizeof *mr, GFP_KERNEL);
145 return ERR_PTR(-ENOMEM);
147 mr->umem = ib_umem_get(pd->uobject->context, start, length,
149 if (IS_ERR(mr->umem)) {
150 err = PTR_ERR(mr->umem);
154 n = ib_umem_page_count(mr->umem);
155 shift = ilog2(mr->umem->page_size);
157 err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, virt_addr, length,
158 convert_access(access_flags), n, shift, &mr->mmr);
162 err = mlx4_ib_umem_write_mtt(dev, &mr->mmr.mtt, mr->umem);
166 err = mlx4_mr_enable(dev->dev, &mr->mmr);
170 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
175 (void) mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
178 ib_umem_release(mr->umem);
186 int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
188 struct mlx4_ib_mr *mr = to_mmr(ibmr);
191 ret = mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
195 ib_umem_release(mr->umem);
201 struct ib_mw *mlx4_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
203 struct mlx4_ib_dev *dev = to_mdev(pd->device);
204 struct mlx4_ib_mw *mw;
207 mw = kmalloc(sizeof(*mw), GFP_KERNEL);
209 return ERR_PTR(-ENOMEM);
211 err = mlx4_mw_alloc(dev->dev, to_mpd(pd)->pdn,
212 to_mlx4_type(type), &mw->mmw);
216 err = mlx4_mw_enable(dev->dev, &mw->mmw);
220 mw->ibmw.rkey = mw->mmw.key;
225 mlx4_mw_free(dev->dev, &mw->mmw);
233 int mlx4_ib_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
234 struct ib_mw_bind *mw_bind)
236 struct ib_send_wr wr;
237 struct ib_send_wr *bad_wr;
240 memset(&wr, 0, sizeof(wr));
241 wr.opcode = IB_WR_BIND_MW;
242 wr.wr_id = mw_bind->wr_id;
243 wr.send_flags = mw_bind->send_flags;
244 wr.wr.bind_mw.mw = mw;
245 wr.wr.bind_mw.bind_info = mw_bind->bind_info;
246 wr.wr.bind_mw.rkey = ib_inc_rkey(mw->rkey);
248 ret = mlx4_ib_post_send(qp, &wr, &bad_wr);
250 mw->rkey = wr.wr.bind_mw.rkey;
255 int mlx4_ib_dealloc_mw(struct ib_mw *ibmw)
257 struct mlx4_ib_mw *mw = to_mmw(ibmw);
259 mlx4_mw_free(to_mdev(ibmw->device)->dev, &mw->mmw);
265 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
266 int max_page_list_len)
268 struct mlx4_ib_dev *dev = to_mdev(pd->device);
269 struct mlx4_ib_mr *mr;
272 mr = kmalloc(sizeof *mr, GFP_KERNEL);
274 return ERR_PTR(-ENOMEM);
276 err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, 0, 0, 0,
277 max_page_list_len, 0, &mr->mmr);
281 err = mlx4_mr_enable(dev->dev, &mr->mmr);
285 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
291 (void) mlx4_mr_free(dev->dev, &mr->mmr);
298 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
301 struct mlx4_ib_dev *dev = to_mdev(ibdev);
302 struct mlx4_ib_fast_reg_page_list *mfrpl;
303 int size = page_list_len * sizeof (u64);
305 if (page_list_len > MLX4_MAX_FAST_REG_PAGES)
306 return ERR_PTR(-EINVAL);
308 mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL);
310 return ERR_PTR(-ENOMEM);
312 mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
313 if (!mfrpl->ibfrpl.page_list)
316 mfrpl->mapped_page_list = dma_alloc_coherent(&dev->dev->pdev->dev,
319 if (!mfrpl->mapped_page_list)
322 WARN_ON(mfrpl->map & 0x3f);
324 return &mfrpl->ibfrpl;
327 kfree(mfrpl->ibfrpl.page_list);
329 return ERR_PTR(-ENOMEM);
332 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
334 struct mlx4_ib_dev *dev = to_mdev(page_list->device);
335 struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
336 int size = page_list->max_page_list_len * sizeof (u64);
338 dma_free_coherent(&dev->dev->pdev->dev, size, mfrpl->mapped_page_list,
340 kfree(mfrpl->ibfrpl.page_list);
344 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
345 struct ib_fmr_attr *fmr_attr)
347 struct mlx4_ib_dev *dev = to_mdev(pd->device);
348 struct mlx4_ib_fmr *fmr;
351 fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
353 return ERR_PTR(-ENOMEM);
355 err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc),
356 fmr_attr->max_pages, fmr_attr->max_maps,
357 fmr_attr->page_shift, &fmr->mfmr);
361 err = mlx4_fmr_enable(to_mdev(pd->device)->dev, &fmr->mfmr);
365 fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key;
370 (void) mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
378 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
379 int npages, u64 iova)
381 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
382 struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device);
384 return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova,
385 &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
388 int mlx4_ib_unmap_fmr(struct list_head *fmr_list)
390 struct ib_fmr *ibfmr;
392 struct mlx4_dev *mdev = NULL;
394 list_for_each_entry(ibfmr, fmr_list, list) {
395 if (mdev && to_mdev(ibfmr->device)->dev != mdev)
397 mdev = to_mdev(ibfmr->device)->dev;
403 list_for_each_entry(ibfmr, fmr_list, list) {
404 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
406 mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
410 * Make sure all MPT status updates are visible before issuing
411 * SYNC_TPT firmware command.
415 err = mlx4_SYNC_TPT(mdev);
417 pr_warn("SYNC_TPT error %d when "
418 "unmapping FMRs\n", err);
423 int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
425 struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
426 struct mlx4_ib_dev *dev = to_mdev(ibfmr->device);
429 err = mlx4_fmr_free(dev->dev, &ifmr->mfmr);