Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. |
| 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 | * $Id: mthca_mr.c 1349 2004-12-16 21:09:43Z roland $ |
| 33 | */ |
| 34 | |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/errno.h> |
| 38 | |
| 39 | #include "mthca_dev.h" |
| 40 | #include "mthca_cmd.h" |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 41 | #include "mthca_memfree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 43 | struct mthca_mtt { |
| 44 | struct mthca_buddy *buddy; |
| 45 | int order; |
| 46 | u32 first_seg; |
| 47 | }; |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* |
| 50 | * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits. |
| 51 | */ |
| 52 | struct mthca_mpt_entry { |
| 53 | u32 flags; |
| 54 | u32 page_size; |
| 55 | u32 key; |
| 56 | u32 pd; |
| 57 | u64 start; |
| 58 | u64 length; |
| 59 | u32 lkey; |
| 60 | u32 window_count; |
| 61 | u32 window_count_limit; |
| 62 | u64 mtt_seg; |
| 63 | u32 mtt_sz; /* Arbel only */ |
| 64 | u32 reserved[2]; |
| 65 | } __attribute__((packed)); |
| 66 | |
| 67 | #define MTHCA_MPT_FLAG_SW_OWNS (0xfUL << 28) |
| 68 | #define MTHCA_MPT_FLAG_MIO (1 << 17) |
| 69 | #define MTHCA_MPT_FLAG_BIND_ENABLE (1 << 15) |
| 70 | #define MTHCA_MPT_FLAG_PHYSICAL (1 << 9) |
| 71 | #define MTHCA_MPT_FLAG_REGION (1 << 8) |
| 72 | |
| 73 | #define MTHCA_MTT_FLAG_PRESENT 1 |
| 74 | |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 75 | #define MTHCA_MPT_STATUS_SW 0xF0 |
| 76 | #define MTHCA_MPT_STATUS_HW 0x00 |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | /* |
| 79 | * Buddy allocator for MTT segments (currently not very efficient |
| 80 | * since it doesn't keep a free list and just searches linearly |
| 81 | * through the bitmaps) |
| 82 | */ |
| 83 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 84 | static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | { |
| 86 | int o; |
| 87 | int m; |
| 88 | u32 seg; |
| 89 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 90 | spin_lock(&buddy->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 92 | for (o = order; o <= buddy->max_order; ++o) { |
| 93 | m = 1 << (buddy->max_order - o); |
| 94 | seg = find_first_bit(buddy->bits[o], m); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | if (seg < m) |
| 96 | goto found; |
| 97 | } |
| 98 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 99 | spin_unlock(&buddy->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | return -1; |
| 101 | |
| 102 | found: |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 103 | clear_bit(seg, buddy->bits[o]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | while (o > order) { |
| 106 | --o; |
| 107 | seg <<= 1; |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 108 | set_bit(seg ^ 1, buddy->bits[o]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | } |
| 110 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 111 | spin_unlock(&buddy->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | seg <<= order; |
| 114 | |
| 115 | return seg; |
| 116 | } |
| 117 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 118 | static void mthca_buddy_free(struct mthca_buddy *buddy, u32 seg, int order) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | { |
| 120 | seg >>= order; |
| 121 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 122 | spin_lock(&buddy->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 124 | while (test_bit(seg ^ 1, buddy->bits[order])) { |
| 125 | clear_bit(seg ^ 1, buddy->bits[order]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | seg >>= 1; |
| 127 | ++order; |
| 128 | } |
| 129 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 130 | set_bit(seg, buddy->bits[order]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 132 | spin_unlock(&buddy->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 135 | static int __devinit mthca_buddy_init(struct mthca_buddy *buddy, int max_order) |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 136 | { |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 137 | int i, s; |
| 138 | |
| 139 | buddy->max_order = max_order; |
| 140 | spin_lock_init(&buddy->lock); |
| 141 | |
| 142 | buddy->bits = kmalloc((buddy->max_order + 1) * sizeof (long *), |
| 143 | GFP_KERNEL); |
| 144 | if (!buddy->bits) |
| 145 | goto err_out; |
| 146 | |
| 147 | memset(buddy->bits, 0, (buddy->max_order + 1) * sizeof (long *)); |
| 148 | |
| 149 | for (i = 0; i <= buddy->max_order; ++i) { |
| 150 | s = BITS_TO_LONGS(1 << (buddy->max_order - i)); |
| 151 | buddy->bits[i] = kmalloc(s * sizeof (long), GFP_KERNEL); |
| 152 | if (!buddy->bits[i]) |
| 153 | goto err_out_free; |
| 154 | bitmap_zero(buddy->bits[i], |
| 155 | 1 << (buddy->max_order - i)); |
| 156 | } |
| 157 | |
| 158 | set_bit(0, buddy->bits[buddy->max_order]); |
| 159 | |
| 160 | return 0; |
| 161 | |
| 162 | err_out_free: |
| 163 | for (i = 0; i <= buddy->max_order; ++i) |
| 164 | kfree(buddy->bits[i]); |
| 165 | |
| 166 | kfree(buddy->bits); |
| 167 | |
| 168 | err_out: |
| 169 | return -ENOMEM; |
| 170 | } |
| 171 | |
| 172 | static void __devexit mthca_buddy_cleanup(struct mthca_buddy *buddy) |
| 173 | { |
| 174 | int i; |
| 175 | |
| 176 | for (i = 0; i <= buddy->max_order; ++i) |
| 177 | kfree(buddy->bits[i]); |
| 178 | |
| 179 | kfree(buddy->bits); |
| 180 | } |
| 181 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 182 | static u32 mthca_alloc_mtt_range(struct mthca_dev *dev, int order, |
| 183 | struct mthca_buddy *buddy) |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 184 | { |
| 185 | u32 seg = mthca_buddy_alloc(buddy, order); |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 186 | |
| 187 | if (seg == -1) |
| 188 | return -1; |
| 189 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 190 | if (mthca_is_memfree(dev)) |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 191 | if (mthca_table_get_range(dev, dev->mr_table.mtt_table, seg, |
| 192 | seg + (1 << order) - 1)) { |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 193 | mthca_buddy_free(buddy, seg, order); |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 194 | seg = -1; |
| 195 | } |
| 196 | |
| 197 | return seg; |
| 198 | } |
| 199 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 200 | static struct mthca_mtt *__mthca_alloc_mtt(struct mthca_dev *dev, int size, |
| 201 | struct mthca_buddy *buddy) |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 202 | { |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 203 | struct mthca_mtt *mtt; |
| 204 | int i; |
| 205 | |
| 206 | if (size <= 0) |
| 207 | return ERR_PTR(-EINVAL); |
| 208 | |
| 209 | mtt = kmalloc(sizeof *mtt, GFP_KERNEL); |
| 210 | if (!mtt) |
| 211 | return ERR_PTR(-ENOMEM); |
| 212 | |
| 213 | mtt->buddy = buddy; |
| 214 | mtt->order = 0; |
| 215 | for (i = MTHCA_MTT_SEG_SIZE / 8; i < size; i <<= 1) |
| 216 | ++mtt->order; |
| 217 | |
| 218 | mtt->first_seg = mthca_alloc_mtt_range(dev, mtt->order, buddy); |
| 219 | if (mtt->first_seg == -1) { |
| 220 | kfree(mtt); |
| 221 | return ERR_PTR(-ENOMEM); |
| 222 | } |
| 223 | |
| 224 | return mtt; |
| 225 | } |
| 226 | |
| 227 | struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size) |
| 228 | { |
| 229 | return __mthca_alloc_mtt(dev, size, &dev->mr_table.mtt_buddy); |
| 230 | } |
| 231 | |
| 232 | void mthca_free_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt) |
| 233 | { |
| 234 | if (!mtt) |
| 235 | return; |
| 236 | |
| 237 | mthca_buddy_free(mtt->buddy, mtt->first_seg, mtt->order); |
| 238 | |
| 239 | mthca_table_put_range(dev, dev->mr_table.mtt_table, |
| 240 | mtt->first_seg, |
| 241 | mtt->first_seg + (1 << mtt->order) - 1); |
| 242 | |
| 243 | kfree(mtt); |
| 244 | } |
| 245 | |
| 246 | int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt, |
| 247 | int start_index, u64 *buffer_list, int list_len) |
| 248 | { |
| 249 | u64 *mtt_entry; |
| 250 | int err = 0; |
| 251 | u8 status; |
| 252 | int i; |
| 253 | |
| 254 | mtt_entry = (u64 *) __get_free_page(GFP_KERNEL); |
| 255 | if (!mtt_entry) |
| 256 | return -ENOMEM; |
| 257 | |
| 258 | while (list_len > 0) { |
| 259 | mtt_entry[0] = cpu_to_be64(dev->mr_table.mtt_base + |
| 260 | mtt->first_seg * MTHCA_MTT_SEG_SIZE + |
| 261 | start_index * 8); |
| 262 | mtt_entry[1] = 0; |
| 263 | for (i = 0; i < list_len && i < PAGE_SIZE / 8 - 2; ++i) |
| 264 | mtt_entry[i + 2] = cpu_to_be64(buffer_list[i] | |
| 265 | MTHCA_MTT_FLAG_PRESENT); |
| 266 | |
| 267 | /* |
| 268 | * If we have an odd number of entries to write, add |
| 269 | * one more dummy entry for firmware efficiency. |
| 270 | */ |
| 271 | if (i & 1) |
| 272 | mtt_entry[i + 2] = 0; |
| 273 | |
| 274 | err = mthca_WRITE_MTT(dev, mtt_entry, (i + 1) & ~1, &status); |
| 275 | if (err) { |
| 276 | mthca_warn(dev, "WRITE_MTT failed (%d)\n", err); |
| 277 | goto out; |
| 278 | } |
| 279 | if (status) { |
| 280 | mthca_warn(dev, "WRITE_MTT returned status 0x%02x\n", |
| 281 | status); |
| 282 | err = -EINVAL; |
| 283 | goto out; |
| 284 | } |
| 285 | |
| 286 | list_len -= i; |
| 287 | start_index += i; |
| 288 | buffer_list += i; |
| 289 | } |
| 290 | |
| 291 | out: |
| 292 | free_page((unsigned long) mtt_entry); |
| 293 | return err; |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 294 | } |
| 295 | |
Michael S. Tsirkin | d0a9d25 | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 296 | static inline u32 tavor_hw_index_to_key(u32 ind) |
| 297 | { |
| 298 | return ind; |
| 299 | } |
| 300 | |
| 301 | static inline u32 tavor_key_to_hw_index(u32 key) |
| 302 | { |
| 303 | return key; |
| 304 | } |
| 305 | |
| 306 | static inline u32 arbel_hw_index_to_key(u32 ind) |
| 307 | { |
| 308 | return (ind >> 24) | (ind << 8); |
| 309 | } |
| 310 | |
| 311 | static inline u32 arbel_key_to_hw_index(u32 key) |
| 312 | { |
| 313 | return (key << 24) | (key >> 8); |
| 314 | } |
| 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | static inline u32 hw_index_to_key(struct mthca_dev *dev, u32 ind) |
| 317 | { |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 318 | if (mthca_is_memfree(dev)) |
Michael S. Tsirkin | d0a9d25 | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 319 | return arbel_hw_index_to_key(ind); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | else |
Michael S. Tsirkin | d0a9d25 | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 321 | return tavor_hw_index_to_key(ind); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | static inline u32 key_to_hw_index(struct mthca_dev *dev, u32 key) |
| 325 | { |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 326 | if (mthca_is_memfree(dev)) |
Michael S. Tsirkin | d0a9d25 | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 327 | return arbel_key_to_hw_index(key); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | else |
Michael S. Tsirkin | d0a9d25 | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 329 | return tavor_key_to_hw_index(key); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | } |
| 331 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 332 | int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift, |
| 333 | u64 iova, u64 total_size, u32 access, struct mthca_mr *mr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 335 | void *mailbox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | struct mthca_mpt_entry *mpt_entry; |
| 337 | u32 key; |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 338 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | int err; |
| 340 | u8 status; |
| 341 | |
| 342 | might_sleep(); |
| 343 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 344 | WARN_ON(buffer_size_shift >= 32); |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | key = mthca_alloc(&dev->mr_table.mpt_alloc); |
| 347 | if (key == -1) |
| 348 | return -ENOMEM; |
| 349 | mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key); |
| 350 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 351 | if (mthca_is_memfree(dev)) { |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 352 | err = mthca_table_get(dev, dev->mr_table.mpt_table, key); |
| 353 | if (err) |
| 354 | goto err_out_mpt_free; |
| 355 | } |
| 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | mailbox = kmalloc(sizeof *mpt_entry + MTHCA_CMD_MAILBOX_EXTRA, |
| 358 | GFP_KERNEL); |
| 359 | if (!mailbox) { |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 360 | err = -ENOMEM; |
| 361 | goto err_out_table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | mpt_entry = MAILBOX_ALIGN(mailbox); |
| 364 | |
| 365 | mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS | |
| 366 | MTHCA_MPT_FLAG_MIO | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | MTHCA_MPT_FLAG_REGION | |
| 368 | access); |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 369 | if (!mr->mtt) |
| 370 | mpt_entry->flags |= cpu_to_be32(MTHCA_MPT_FLAG_PHYSICAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
| 372 | mpt_entry->page_size = cpu_to_be32(buffer_size_shift - 12); |
| 373 | mpt_entry->key = cpu_to_be32(key); |
| 374 | mpt_entry->pd = cpu_to_be32(pd); |
| 375 | mpt_entry->start = cpu_to_be64(iova); |
| 376 | mpt_entry->length = cpu_to_be64(total_size); |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | memset(&mpt_entry->lkey, 0, |
| 379 | sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, lkey)); |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 380 | |
| 381 | if (mr->mtt) |
| 382 | mpt_entry->mtt_seg = |
| 383 | cpu_to_be64(dev->mr_table.mtt_base + |
| 384 | mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
| 386 | if (0) { |
| 387 | mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey); |
| 388 | for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) { |
| 389 | if (i % 4 == 0) |
| 390 | printk("[%02x] ", i * 4); |
| 391 | printk(" %08x", be32_to_cpu(((u32 *) mpt_entry)[i])); |
| 392 | if ((i + 1) % 4 == 0) |
| 393 | printk("\n"); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | err = mthca_SW2HW_MPT(dev, mpt_entry, |
| 398 | key & (dev->limits.num_mpts - 1), |
| 399 | &status); |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 400 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 402 | goto err_out_mailbox; |
| 403 | } else if (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | mthca_warn(dev, "SW2HW_MPT returned status 0x%02x\n", |
| 405 | status); |
| 406 | err = -EINVAL; |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 407 | goto err_out_mailbox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | kfree(mailbox); |
| 411 | return err; |
| 412 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 413 | err_out_mailbox: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | kfree(mailbox); |
| 415 | |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 416 | err_out_table: |
Roland Dreier | a03a5a6 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 417 | mthca_table_put(dev, dev->mr_table.mpt_table, key); |
Roland Dreier | 86562a1 | 2005-04-16 15:26:13 -0700 | [diff] [blame] | 418 | |
| 419 | err_out_mpt_free: |
Michael S. Tsirkin | 55645e9 | 2005-04-16 15:26:19 -0700 | [diff] [blame] | 420 | mthca_free(&dev->mr_table.mpt_alloc, key); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | return err; |
| 422 | } |
| 423 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 424 | int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd, |
| 425 | u32 access, struct mthca_mr *mr) |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 426 | { |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 427 | mr->mtt = NULL; |
| 428 | return mthca_mr_alloc(dev, pd, 12, 0, ~0ULL, access, mr); |
| 429 | } |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 430 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 431 | int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd, |
| 432 | u64 *buffer_list, int buffer_size_shift, |
| 433 | int list_len, u64 iova, u64 total_size, |
| 434 | u32 access, struct mthca_mr *mr) |
| 435 | { |
| 436 | int err; |
| 437 | |
| 438 | mr->mtt = mthca_alloc_mtt(dev, list_len); |
| 439 | if (IS_ERR(mr->mtt)) |
| 440 | return PTR_ERR(mr->mtt); |
| 441 | |
| 442 | err = mthca_write_mtt(dev, mr->mtt, 0, buffer_list, list_len); |
| 443 | if (err) { |
| 444 | mthca_free_mtt(dev, mr->mtt); |
| 445 | return err; |
| 446 | } |
| 447 | |
| 448 | err = mthca_mr_alloc(dev, pd, buffer_size_shift, iova, |
| 449 | total_size, access, mr); |
| 450 | if (err) |
| 451 | mthca_free_mtt(dev, mr->mtt); |
| 452 | |
| 453 | return err; |
| 454 | } |
| 455 | |
| 456 | /* Free mr or fmr */ |
| 457 | static void mthca_free_region(struct mthca_dev *dev, u32 lkey) |
| 458 | { |
Roland Dreier | a03a5a6 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 459 | mthca_table_put(dev, dev->mr_table.mpt_table, |
| 460 | arbel_key_to_hw_index(lkey)); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 461 | |
| 462 | mthca_free(&dev->mr_table.mpt_alloc, key_to_hw_index(dev, lkey)); |
| 463 | } |
| 464 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr) |
| 466 | { |
| 467 | int err; |
| 468 | u8 status; |
| 469 | |
| 470 | might_sleep(); |
| 471 | |
| 472 | err = mthca_HW2SW_MPT(dev, NULL, |
| 473 | key_to_hw_index(dev, mr->ibmr.lkey) & |
| 474 | (dev->limits.num_mpts - 1), |
| 475 | &status); |
| 476 | if (err) |
| 477 | mthca_warn(dev, "HW2SW_MPT failed (%d)\n", err); |
| 478 | else if (status) |
| 479 | mthca_warn(dev, "HW2SW_MPT returned status 0x%02x\n", |
| 480 | status); |
| 481 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 482 | mthca_free_region(dev, mr->ibmr.lkey); |
| 483 | mthca_free_mtt(dev, mr->mtt); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 486 | int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd, |
| 487 | u32 access, struct mthca_fmr *mr) |
| 488 | { |
| 489 | struct mthca_mpt_entry *mpt_entry; |
| 490 | void *mailbox; |
| 491 | u64 mtt_seg; |
| 492 | u32 key, idx; |
| 493 | u8 status; |
| 494 | int list_len = mr->attr.max_pages; |
| 495 | int err = -ENOMEM; |
| 496 | int i; |
| 497 | |
| 498 | might_sleep(); |
| 499 | |
| 500 | if (mr->attr.page_size < 12 || mr->attr.page_size >= 32) |
| 501 | return -EINVAL; |
| 502 | |
| 503 | /* For Arbel, all MTTs must fit in the same page. */ |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 504 | if (mthca_is_memfree(dev) && |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 505 | mr->attr.max_pages * sizeof *mr->mem.arbel.mtts > PAGE_SIZE) |
| 506 | return -EINVAL; |
| 507 | |
| 508 | mr->maps = 0; |
| 509 | |
| 510 | key = mthca_alloc(&dev->mr_table.mpt_alloc); |
| 511 | if (key == -1) |
| 512 | return -ENOMEM; |
| 513 | |
| 514 | idx = key & (dev->limits.num_mpts - 1); |
| 515 | mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key); |
| 516 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 517 | if (mthca_is_memfree(dev)) { |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 518 | err = mthca_table_get(dev, dev->mr_table.mpt_table, key); |
| 519 | if (err) |
| 520 | goto err_out_mpt_free; |
| 521 | |
| 522 | mr->mem.arbel.mpt = mthca_table_find(dev->mr_table.mpt_table, key); |
| 523 | BUG_ON(!mr->mem.arbel.mpt); |
| 524 | } else |
| 525 | mr->mem.tavor.mpt = dev->mr_table.tavor_fmr.mpt_base + |
| 526 | sizeof *(mr->mem.tavor.mpt) * idx; |
| 527 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 528 | mr->mtt = __mthca_alloc_mtt(dev, list_len, dev->mr_table.fmr_mtt_buddy); |
| 529 | if (IS_ERR(mr->mtt)) |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 530 | goto err_out_table; |
| 531 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 532 | mtt_seg = mr->mtt->first_seg * MTHCA_MTT_SEG_SIZE; |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 533 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 534 | if (mthca_is_memfree(dev)) { |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 535 | mr->mem.arbel.mtts = mthca_table_find(dev->mr_table.mtt_table, |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 536 | mr->mtt->first_seg); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 537 | BUG_ON(!mr->mem.arbel.mtts); |
| 538 | } else |
| 539 | mr->mem.tavor.mtts = dev->mr_table.tavor_fmr.mtt_base + mtt_seg; |
| 540 | |
| 541 | mailbox = kmalloc(sizeof *mpt_entry + MTHCA_CMD_MAILBOX_EXTRA, |
| 542 | GFP_KERNEL); |
| 543 | if (!mailbox) |
| 544 | goto err_out_free_mtt; |
| 545 | |
| 546 | mpt_entry = MAILBOX_ALIGN(mailbox); |
| 547 | |
| 548 | mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS | |
| 549 | MTHCA_MPT_FLAG_MIO | |
| 550 | MTHCA_MPT_FLAG_REGION | |
| 551 | access); |
| 552 | |
| 553 | mpt_entry->page_size = cpu_to_be32(mr->attr.page_size - 12); |
| 554 | mpt_entry->key = cpu_to_be32(key); |
| 555 | mpt_entry->pd = cpu_to_be32(pd); |
| 556 | memset(&mpt_entry->start, 0, |
| 557 | sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, start)); |
| 558 | mpt_entry->mtt_seg = cpu_to_be64(dev->mr_table.mtt_base + mtt_seg); |
| 559 | |
| 560 | if (0) { |
| 561 | mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey); |
| 562 | for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) { |
| 563 | if (i % 4 == 0) |
| 564 | printk("[%02x] ", i * 4); |
| 565 | printk(" %08x", be32_to_cpu(((u32 *) mpt_entry)[i])); |
| 566 | if ((i + 1) % 4 == 0) |
| 567 | printk("\n"); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | err = mthca_SW2HW_MPT(dev, mpt_entry, |
| 572 | key & (dev->limits.num_mpts - 1), |
| 573 | &status); |
| 574 | if (err) { |
| 575 | mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
| 576 | goto err_out_mailbox_free; |
| 577 | } |
| 578 | if (status) { |
| 579 | mthca_warn(dev, "SW2HW_MPT returned status 0x%02x\n", |
| 580 | status); |
| 581 | err = -EINVAL; |
| 582 | goto err_out_mailbox_free; |
| 583 | } |
| 584 | |
| 585 | kfree(mailbox); |
| 586 | return 0; |
| 587 | |
| 588 | err_out_mailbox_free: |
| 589 | kfree(mailbox); |
| 590 | |
| 591 | err_out_free_mtt: |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 592 | mthca_free_mtt(dev, mr->mtt); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 593 | |
| 594 | err_out_table: |
Roland Dreier | a03a5a6 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 595 | mthca_table_put(dev, dev->mr_table.mpt_table, key); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 596 | |
| 597 | err_out_mpt_free: |
| 598 | mthca_free(&dev->mr_table.mpt_alloc, mr->ibmr.lkey); |
| 599 | return err; |
| 600 | } |
| 601 | |
| 602 | int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr) |
| 603 | { |
| 604 | if (fmr->maps) |
| 605 | return -EBUSY; |
| 606 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 607 | mthca_free_region(dev, fmr->ibmr.lkey); |
| 608 | mthca_free_mtt(dev, fmr->mtt); |
| 609 | |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static inline int mthca_check_fmr(struct mthca_fmr *fmr, u64 *page_list, |
| 614 | int list_len, u64 iova) |
| 615 | { |
| 616 | int i, page_mask; |
| 617 | |
| 618 | if (list_len > fmr->attr.max_pages) |
| 619 | return -EINVAL; |
| 620 | |
| 621 | page_mask = (1 << fmr->attr.page_size) - 1; |
| 622 | |
| 623 | /* We are getting page lists, so va must be page aligned. */ |
| 624 | if (iova & page_mask) |
| 625 | return -EINVAL; |
| 626 | |
| 627 | /* Trust the user not to pass misaligned data in page_list */ |
| 628 | if (0) |
| 629 | for (i = 0; i < list_len; ++i) { |
| 630 | if (page_list[i] & ~page_mask) |
| 631 | return -EINVAL; |
| 632 | } |
| 633 | |
| 634 | if (fmr->maps >= fmr->attr.max_maps) |
| 635 | return -EINVAL; |
| 636 | |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | |
| 641 | int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, |
| 642 | int list_len, u64 iova) |
| 643 | { |
| 644 | struct mthca_fmr *fmr = to_mfmr(ibfmr); |
| 645 | struct mthca_dev *dev = to_mdev(ibfmr->device); |
| 646 | struct mthca_mpt_entry mpt_entry; |
| 647 | u32 key; |
| 648 | int i, err; |
| 649 | |
| 650 | err = mthca_check_fmr(fmr, page_list, list_len, iova); |
| 651 | if (err) |
| 652 | return err; |
| 653 | |
| 654 | ++fmr->maps; |
| 655 | |
| 656 | key = tavor_key_to_hw_index(fmr->ibmr.lkey); |
| 657 | key += dev->limits.num_mpts; |
| 658 | fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key); |
| 659 | |
| 660 | writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt); |
| 661 | |
| 662 | for (i = 0; i < list_len; ++i) { |
| 663 | __be64 mtt_entry = cpu_to_be64(page_list[i] | |
| 664 | MTHCA_MTT_FLAG_PRESENT); |
| 665 | mthca_write64_raw(mtt_entry, fmr->mem.tavor.mtts + i); |
| 666 | } |
| 667 | |
| 668 | mpt_entry.lkey = cpu_to_be32(key); |
| 669 | mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size)); |
| 670 | mpt_entry.start = cpu_to_be64(iova); |
| 671 | |
| 672 | writel(mpt_entry.lkey, &fmr->mem.tavor.mpt->key); |
| 673 | memcpy_toio(&fmr->mem.tavor.mpt->start, &mpt_entry.start, |
| 674 | offsetof(struct mthca_mpt_entry, window_count) - |
| 675 | offsetof(struct mthca_mpt_entry, start)); |
| 676 | |
| 677 | writeb(MTHCA_MPT_STATUS_HW, fmr->mem.tavor.mpt); |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, |
| 683 | int list_len, u64 iova) |
| 684 | { |
| 685 | struct mthca_fmr *fmr = to_mfmr(ibfmr); |
| 686 | struct mthca_dev *dev = to_mdev(ibfmr->device); |
| 687 | u32 key; |
| 688 | int i, err; |
| 689 | |
| 690 | err = mthca_check_fmr(fmr, page_list, list_len, iova); |
| 691 | if (err) |
| 692 | return err; |
| 693 | |
| 694 | ++fmr->maps; |
| 695 | |
| 696 | key = arbel_key_to_hw_index(fmr->ibmr.lkey); |
| 697 | key += dev->limits.num_mpts; |
| 698 | fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key); |
| 699 | |
| 700 | *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW; |
| 701 | |
| 702 | wmb(); |
| 703 | |
| 704 | for (i = 0; i < list_len; ++i) |
| 705 | fmr->mem.arbel.mtts[i] = cpu_to_be64(page_list[i] | |
| 706 | MTHCA_MTT_FLAG_PRESENT); |
| 707 | |
| 708 | fmr->mem.arbel.mpt->key = cpu_to_be32(key); |
| 709 | fmr->mem.arbel.mpt->lkey = cpu_to_be32(key); |
| 710 | fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size)); |
| 711 | fmr->mem.arbel.mpt->start = cpu_to_be64(iova); |
| 712 | |
| 713 | wmb(); |
| 714 | |
| 715 | *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_HW; |
| 716 | |
| 717 | wmb(); |
| 718 | |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr) |
| 723 | { |
| 724 | u32 key; |
| 725 | |
| 726 | if (!fmr->maps) |
| 727 | return; |
| 728 | |
| 729 | key = tavor_key_to_hw_index(fmr->ibmr.lkey); |
| 730 | key &= dev->limits.num_mpts - 1; |
| 731 | fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key); |
| 732 | |
| 733 | fmr->maps = 0; |
| 734 | |
| 735 | writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt); |
| 736 | } |
| 737 | |
| 738 | void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr) |
| 739 | { |
| 740 | u32 key; |
| 741 | |
| 742 | if (!fmr->maps) |
| 743 | return; |
| 744 | |
| 745 | key = arbel_key_to_hw_index(fmr->ibmr.lkey); |
| 746 | key &= dev->limits.num_mpts - 1; |
| 747 | fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key); |
| 748 | |
| 749 | fmr->maps = 0; |
| 750 | |
| 751 | *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | int __devinit mthca_init_mr_table(struct mthca_dev *dev) |
| 755 | { |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 756 | int err, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
| 758 | err = mthca_alloc_init(&dev->mr_table.mpt_alloc, |
| 759 | dev->limits.num_mpts, |
| 760 | ~0, dev->limits.reserved_mrws); |
| 761 | if (err) |
| 762 | return err; |
| 763 | |
Roland Dreier | d10ddbf | 2005-04-16 15:26:32 -0700 | [diff] [blame] | 764 | if (!mthca_is_memfree(dev) && |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 765 | (dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) |
| 766 | dev->limits.fmr_reserved_mtts = 0; |
| 767 | else |
| 768 | dev->mthca_flags |= MTHCA_FLAG_FMR; |
| 769 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 770 | err = mthca_buddy_init(&dev->mr_table.mtt_buddy, |
| 771 | fls(dev->limits.num_mtt_segs - 1)); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 772 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 773 | if (err) |
| 774 | goto err_mtt_buddy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 776 | dev->mr_table.tavor_fmr.mpt_base = NULL; |
| 777 | dev->mr_table.tavor_fmr.mtt_base = NULL; |
| 778 | |
| 779 | if (dev->limits.fmr_reserved_mtts) { |
| 780 | i = fls(dev->limits.fmr_reserved_mtts - 1); |
| 781 | |
| 782 | if (i >= 31) { |
| 783 | mthca_warn(dev, "Unable to reserve 2^31 FMR MTTs.\n"); |
| 784 | err = -EINVAL; |
| 785 | goto err_fmr_mpt; |
| 786 | } |
| 787 | |
| 788 | dev->mr_table.tavor_fmr.mpt_base = |
| 789 | ioremap(dev->mr_table.mpt_base, |
| 790 | (1 << i) * sizeof (struct mthca_mpt_entry)); |
| 791 | |
| 792 | if (!dev->mr_table.tavor_fmr.mpt_base) { |
| 793 | mthca_warn(dev, "MPT ioremap for FMR failed.\n"); |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 794 | err = -ENOMEM; |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 795 | goto err_fmr_mpt; |
| 796 | } |
| 797 | |
| 798 | dev->mr_table.tavor_fmr.mtt_base = |
| 799 | ioremap(dev->mr_table.mtt_base, |
| 800 | (1 << i) * MTHCA_MTT_SEG_SIZE); |
| 801 | if (!dev->mr_table.tavor_fmr.mtt_base) { |
| 802 | mthca_warn(dev, "MTT ioremap for FMR failed.\n"); |
| 803 | err = -ENOMEM; |
| 804 | goto err_fmr_mtt; |
| 805 | } |
| 806 | |
| 807 | err = mthca_buddy_init(&dev->mr_table.tavor_fmr.mtt_buddy, i); |
| 808 | if (err) |
| 809 | goto err_fmr_mtt_buddy; |
| 810 | |
| 811 | /* Prevent regular MRs from using FMR keys */ |
| 812 | err = mthca_buddy_alloc(&dev->mr_table.mtt_buddy, i); |
| 813 | if (err) |
| 814 | goto err_reserve_fmr; |
| 815 | |
| 816 | dev->mr_table.fmr_mtt_buddy = |
| 817 | &dev->mr_table.tavor_fmr.mtt_buddy; |
| 818 | } else |
| 819 | dev->mr_table.fmr_mtt_buddy = &dev->mr_table.mtt_buddy; |
| 820 | |
| 821 | /* FMR table is always the first, take reserved MTTs out of there */ |
| 822 | if (dev->limits.reserved_mtts) { |
| 823 | i = fls(dev->limits.reserved_mtts - 1); |
| 824 | |
Roland Dreier | d56d6f9 | 2005-06-27 14:36:43 -0700 | [diff] [blame] | 825 | if (mthca_alloc_mtt_range(dev, i, |
| 826 | dev->mr_table.fmr_mtt_buddy) == -1) { |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 827 | mthca_warn(dev, "MTT table of order %d is too small.\n", |
| 828 | dev->mr_table.fmr_mtt_buddy->max_order); |
| 829 | err = -ENOMEM; |
| 830 | goto err_reserve_mtts; |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 831 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | return 0; |
| 835 | |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 836 | err_reserve_mtts: |
| 837 | err_reserve_fmr: |
| 838 | if (dev->limits.fmr_reserved_mtts) |
| 839 | mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy); |
| 840 | |
| 841 | err_fmr_mtt_buddy: |
| 842 | if (dev->mr_table.tavor_fmr.mtt_base) |
| 843 | iounmap(dev->mr_table.tavor_fmr.mtt_base); |
| 844 | |
| 845 | err_fmr_mtt: |
| 846 | if (dev->mr_table.tavor_fmr.mpt_base) |
| 847 | iounmap(dev->mr_table.tavor_fmr.mpt_base); |
| 848 | |
| 849 | err_fmr_mpt: |
| 850 | mthca_buddy_cleanup(&dev->mr_table.mtt_buddy); |
| 851 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 852 | err_mtt_buddy: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | mthca_alloc_cleanup(&dev->mr_table.mpt_alloc); |
| 854 | |
| 855 | return err; |
| 856 | } |
| 857 | |
| 858 | void __devexit mthca_cleanup_mr_table(struct mthca_dev *dev) |
| 859 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | /* XXX check if any MRs are still allocated? */ |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 861 | if (dev->limits.fmr_reserved_mtts) |
| 862 | mthca_buddy_cleanup(&dev->mr_table.tavor_fmr.mtt_buddy); |
| 863 | |
Michael S. Tsirkin | 9095e20 | 2005-04-16 15:26:26 -0700 | [diff] [blame] | 864 | mthca_buddy_cleanup(&dev->mr_table.mtt_buddy); |
Michael S. Tsirkin | e0f5fdc | 2005-04-16 15:26:30 -0700 | [diff] [blame] | 865 | |
| 866 | if (dev->mr_table.tavor_fmr.mtt_base) |
| 867 | iounmap(dev->mr_table.tavor_fmr.mtt_base); |
| 868 | if (dev->mr_table.tavor_fmr.mpt_base) |
| 869 | iounmap(dev->mr_table.tavor_fmr.mpt_base); |
| 870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | mthca_alloc_cleanup(&dev->mr_table.mpt_alloc); |
| 872 | } |