2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <asm/byteorder.h>
34 #include <rdma/iw_cm.h>
35 #include <rdma/ib_verbs.h>
38 #include "cxio_resource.h"
40 #include "iwch_provider.h"
42 static void iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag)
47 mhp->attr.stag = stag;
49 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
50 insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid);
51 PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp);
54 int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php,
55 struct iwch_mr *mhp, int shift)
59 if (cxio_register_phys_mem(&rhp->rdev,
60 &stag, mhp->attr.pdid,
66 mhp->attr.pbl_size, mhp->attr.pbl_addr))
69 iwch_finish_mem_reg(mhp, stag);
74 int iwch_reregister_mem(struct iwch_dev *rhp, struct iwch_pd *php,
81 /* We could support this... */
82 if (npages > mhp->attr.pbl_size)
85 stag = mhp->attr.stag;
86 if (cxio_reregister_phys_mem(&rhp->rdev,
87 &stag, mhp->attr.pdid,
93 mhp->attr.pbl_size, mhp->attr.pbl_addr))
96 iwch_finish_mem_reg(mhp, stag);
101 int iwch_alloc_pbl(struct iwch_mr *mhp, int npages)
103 mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev,
106 if (!mhp->attr.pbl_addr)
109 mhp->attr.pbl_size = npages;
114 void iwch_free_pbl(struct iwch_mr *mhp)
116 cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
117 mhp->attr.pbl_size << 3);
120 int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset)
122 return cxio_write_pbl(&mhp->rhp->rdev, pages,
123 mhp->attr.pbl_addr + (offset << 3), npages);
126 int build_phys_page_list(struct ib_phys_buf *buffer_list,
139 for (i = 0; i < num_phys_buf; ++i) {
140 if (i != 0 && buffer_list[i].addr & ~PAGE_MASK)
142 if (i != 0 && i != num_phys_buf - 1 &&
143 (buffer_list[i].size & ~PAGE_MASK))
145 *total_size += buffer_list[i].size;
147 mask |= buffer_list[i].addr;
149 mask |= buffer_list[i].addr & PAGE_MASK;
150 if (i != num_phys_buf - 1)
151 mask |= buffer_list[i].addr + buffer_list[i].size;
153 mask |= (buffer_list[i].addr + buffer_list[i].size +
154 PAGE_SIZE - 1) & PAGE_MASK;
157 if (*total_size > 0xFFFFFFFFULL)
160 /* Find largest page shift we can use to cover buffers */
161 for (*shift = PAGE_SHIFT; *shift < 27; ++(*shift))
162 if ((1ULL << *shift) & mask)
165 buffer_list[0].size += buffer_list[0].addr & ((1ULL << *shift) - 1);
166 buffer_list[0].addr &= ~0ull << *shift;
169 for (i = 0; i < num_phys_buf; ++i)
170 *npages += (buffer_list[i].size +
171 (1ULL << *shift) - 1) >> *shift;
176 *page_list = kmalloc(sizeof(u64) * *npages, GFP_KERNEL);
181 for (i = 0; i < num_phys_buf; ++i)
183 j < (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift;
185 (*page_list)[n++] = cpu_to_be64(buffer_list[i].addr +
186 ((u64) j << *shift));
188 PDBG("%s va 0x%llx mask 0x%llx shift %d len %lld pbl_size %d\n",
189 __func__, (unsigned long long) *iova_start,
190 (unsigned long long) mask, *shift, (unsigned long long) *total_size,