Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006 Chelsio, Inc. All rights reserved. |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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" |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 38 | #include "cxio_resource.h" |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 39 | #include "iwch.h" |
| 40 | #include "iwch_provider.h" |
| 41 | |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 42 | static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 43 | { |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 44 | u32 mmid; |
| 45 | |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 46 | mhp->attr.state = 1; |
| 47 | mhp->attr.stag = stag; |
| 48 | mmid = stag >> 8; |
| 49 | mhp->ibmr.rkey = mhp->ibmr.lkey = stag; |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 50 | PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp); |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 51 | return insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid); |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 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; |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 58 | int ret; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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, |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 66 | shift - 12, |
| 67 | mhp->attr.pbl_size, mhp->attr.pbl_addr)) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 68 | return -ENOMEM; |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 69 | |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 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; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | int iwch_reregister_mem(struct iwch_dev *rhp, struct iwch_pd *php, |
| 78 | struct iwch_mr *mhp, |
| 79 | int shift, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 80 | int npages) |
| 81 | { |
| 82 | u32 stag; |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 83 | int ret; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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, |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 96 | shift - 12, |
| 97 | mhp->attr.pbl_size, mhp->attr.pbl_addr)) |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 98 | return -ENOMEM; |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 99 | |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 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); |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 104 | |
Steve Wise | 13a2393 | 2009-09-09 11:25:55 -0700 | [diff] [blame] | 105 | return ret; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 106 | } |
| 107 | |
Roland Dreier | 273748c | 2008-05-06 15:56:22 -0700 | [diff] [blame] | 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 | |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 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 | |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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; |
Steve Wise | d08ca26 | 2008-01-21 14:42:11 -0600 | [diff] [blame] | 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; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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)) |
Bryan Rosenburg | 82d416f | 2008-02-20 17:31:48 -0600 | [diff] [blame] | 169 | if ((1ULL << *shift) & mask) |
| 170 | break; |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 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", |
Harvey Harrison | 3371836 | 2008-04-16 21:01:10 -0700 | [diff] [blame] | 196 | __func__, (unsigned long long) *iova_start, |
Steve Wise | b038ced | 2007-02-12 16:16:18 -0800 | [diff] [blame] | 197 | (unsigned long long) mask, *shift, (unsigned long long) *total_size, |
| 198 | *npages); |
| 199 | |
| 200 | return 0; |
| 201 | |
| 202 | } |