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b038ced7 SW |
1 | /* |
2 | * Copyright (c) 2006 Chelsio, Inc. All rights reserved. | |
b038ced7 SW |
3 | * |
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: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
22 | * | |
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 | |
30 | * SOFTWARE. | |
31 | */ | |
32 | #include <asm/byteorder.h> | |
33 | ||
34 | #include <rdma/iw_cm.h> | |
35 | #include <rdma/ib_verbs.h> | |
36 | ||
37 | #include "cxio_hal.h" | |
273748cc | 38 | #include "cxio_resource.h" |
b038ced7 SW |
39 | #include "iwch.h" |
40 | #include "iwch_provider.h" | |
41 | ||
13a23933 | 42 | static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag) |
b038ced7 | 43 | { |
b038ced7 SW |
44 | u32 mmid; |
45 | ||
273748cc RD |
46 | mhp->attr.state = 1; |
47 | mhp->attr.stag = stag; | |
48 | mmid = stag >> 8; | |
49 | mhp->ibmr.rkey = mhp->ibmr.lkey = stag; | |
273748cc | 50 | PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp); |
13a23933 | 51 | return insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid); |
273748cc RD |
52 | } |
53 | ||
54 | int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php, | |
55 | struct iwch_mr *mhp, int shift) | |
56 | { | |
57 | u32 stag; | |
13a23933 | 58 | int ret; |
b038ced7 SW |
59 | |
60 | if (cxio_register_phys_mem(&rhp->rdev, | |
61 | &stag, mhp->attr.pdid, | |
62 | mhp->attr.perms, | |
63 | mhp->attr.zbva, | |
64 | mhp->attr.va_fbo, | |
65 | mhp->attr.len, | |
273748cc RD |
66 | shift - 12, |
67 | mhp->attr.pbl_size, mhp->attr.pbl_addr)) | |
b038ced7 | 68 | return -ENOMEM; |
273748cc | 69 | |
13a23933 SW |
70 | ret = iwch_finish_mem_reg(mhp, stag); |
71 | if (ret) | |
72 | cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, | |
73 | mhp->attr.pbl_addr); | |
74 | return ret; | |
b038ced7 SW |
75 | } |
76 | ||
77 | int iwch_reregister_mem(struct iwch_dev *rhp, struct iwch_pd *php, | |
78 | struct iwch_mr *mhp, | |
79 | int shift, | |
b038ced7 SW |
80 | int npages) |
81 | { | |
82 | u32 stag; | |
13a23933 | 83 | int ret; |
b038ced7 SW |
84 | |
85 | /* We could support this... */ | |
86 | if (npages > mhp->attr.pbl_size) | |
87 | return -ENOMEM; | |
88 | ||
89 | stag = mhp->attr.stag; | |
90 | if (cxio_reregister_phys_mem(&rhp->rdev, | |
91 | &stag, mhp->attr.pdid, | |
92 | mhp->attr.perms, | |
93 | mhp->attr.zbva, | |
94 | mhp->attr.va_fbo, | |
95 | mhp->attr.len, | |
273748cc RD |
96 | shift - 12, |
97 | mhp->attr.pbl_size, mhp->attr.pbl_addr)) | |
b038ced7 | 98 | return -ENOMEM; |
273748cc | 99 | |
13a23933 SW |
100 | ret = iwch_finish_mem_reg(mhp, stag); |
101 | if (ret) | |
102 | cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, | |
103 | mhp->attr.pbl_addr); | |
273748cc | 104 | |
13a23933 | 105 | return ret; |
273748cc RD |
106 | } |
107 | ||
108 | int iwch_alloc_pbl(struct iwch_mr *mhp, int npages) | |
109 | { | |
110 | mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev, | |
111 | npages << 3); | |
112 | ||
113 | if (!mhp->attr.pbl_addr) | |
114 | return -ENOMEM; | |
115 | ||
116 | mhp->attr.pbl_size = npages; | |
117 | ||
b038ced7 SW |
118 | return 0; |
119 | } | |
120 | ||
273748cc RD |
121 | void iwch_free_pbl(struct iwch_mr *mhp) |
122 | { | |
123 | cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr, | |
124 | mhp->attr.pbl_size << 3); | |
125 | } | |
126 | ||
127 | int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset) | |
128 | { | |
129 | return cxio_write_pbl(&mhp->rhp->rdev, pages, | |
130 | mhp->attr.pbl_addr + (offset << 3), npages); | |
131 | } | |
132 | ||
b038ced7 SW |
133 | int build_phys_page_list(struct ib_phys_buf *buffer_list, |
134 | int num_phys_buf, | |
135 | u64 *iova_start, | |
136 | u64 *total_size, | |
137 | int *npages, | |
138 | int *shift, | |
139 | __be64 **page_list) | |
140 | { | |
141 | u64 mask; | |
142 | int i, j, n; | |
143 | ||
144 | mask = 0; | |
145 | *total_size = 0; | |
146 | for (i = 0; i < num_phys_buf; ++i) { | |
147 | if (i != 0 && buffer_list[i].addr & ~PAGE_MASK) | |
148 | return -EINVAL; | |
149 | if (i != 0 && i != num_phys_buf - 1 && | |
150 | (buffer_list[i].size & ~PAGE_MASK)) | |
151 | return -EINVAL; | |
152 | *total_size += buffer_list[i].size; | |
153 | if (i > 0) | |
154 | mask |= buffer_list[i].addr; | |
d08ca26c SW |
155 | else |
156 | mask |= buffer_list[i].addr & PAGE_MASK; | |
157 | if (i != num_phys_buf - 1) | |
158 | mask |= buffer_list[i].addr + buffer_list[i].size; | |
159 | else | |
160 | mask |= (buffer_list[i].addr + buffer_list[i].size + | |
161 | PAGE_SIZE - 1) & PAGE_MASK; | |
b038ced7 SW |
162 | } |
163 | ||
164 | if (*total_size > 0xFFFFFFFFULL) | |
165 | return -ENOMEM; | |
166 | ||
167 | /* Find largest page shift we can use to cover buffers */ | |
168 | for (*shift = PAGE_SHIFT; *shift < 27; ++(*shift)) | |
82d416ff BR |
169 | if ((1ULL << *shift) & mask) |
170 | break; | |
b038ced7 SW |
171 | |
172 | buffer_list[0].size += buffer_list[0].addr & ((1ULL << *shift) - 1); | |
173 | buffer_list[0].addr &= ~0ull << *shift; | |
174 | ||
175 | *npages = 0; | |
176 | for (i = 0; i < num_phys_buf; ++i) | |
177 | *npages += (buffer_list[i].size + | |
178 | (1ULL << *shift) - 1) >> *shift; | |
179 | ||
180 | if (!*npages) | |
181 | return -EINVAL; | |
182 | ||
183 | *page_list = kmalloc(sizeof(u64) * *npages, GFP_KERNEL); | |
184 | if (!*page_list) | |
185 | return -ENOMEM; | |
186 | ||
187 | n = 0; | |
188 | for (i = 0; i < num_phys_buf; ++i) | |
189 | for (j = 0; | |
190 | j < (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift; | |
191 | ++j) | |
192 | (*page_list)[n++] = cpu_to_be64(buffer_list[i].addr + | |
193 | ((u64) j << *shift)); | |
194 | ||
195 | PDBG("%s va 0x%llx mask 0x%llx shift %d len %lld pbl_size %d\n", | |
33718363 | 196 | __func__, (unsigned long long) *iova_start, |
b038ced7 SW |
197 | (unsigned long long) mask, *shift, (unsigned long long) *total_size, |
198 | *npages); | |
199 | ||
200 | return 0; | |
201 | ||
202 | } |