Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. |
Jack Morgenstein | 51a379d | 2008-07-25 10:32:52 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 4 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. |
| 5 | * |
| 6 | * This software is available to you under a choice of one of two |
| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
| 8 | * General Public License (GPL) Version 2, available from the file |
| 9 | * COPYING in the main directory of this source tree, or the |
| 10 | * OpenIB.org BSD license below: |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or |
| 13 | * without modification, are permitted provided that the following |
| 14 | * conditions are met: |
| 15 | * |
| 16 | * - Redistributions of source code must retain the above |
| 17 | * copyright notice, this list of conditions and the following |
| 18 | * disclaimer. |
| 19 | * |
| 20 | * - Redistributions in binary form must reproduce the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer in the documentation and/or other materials |
| 23 | * provided with the distribution. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 32 | * SOFTWARE. |
| 33 | */ |
| 34 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 35 | #include <linux/init.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 36 | #include <linux/errno.h> |
Paul Gortmaker | ee40fa0 | 2011-05-27 16:14:23 -0400 | [diff] [blame] | 37 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 38 | #include <linux/slab.h> |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 39 | #include <linux/kernel.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 40 | |
| 41 | #include <linux/mlx4/cmd.h> |
| 42 | |
| 43 | #include "mlx4.h" |
| 44 | #include "icm.h" |
| 45 | |
| 46 | /* |
| 47 | * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits. |
| 48 | */ |
| 49 | struct mlx4_mpt_entry { |
| 50 | __be32 flags; |
| 51 | __be32 qpn; |
| 52 | __be32 key; |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 53 | __be32 pd_flags; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 54 | __be64 start; |
| 55 | __be64 length; |
| 56 | __be32 lkey; |
| 57 | __be32 win_cnt; |
| 58 | u8 reserved1[3]; |
| 59 | u8 mtt_rep; |
| 60 | __be64 mtt_seg; |
| 61 | __be32 mtt_sz; |
| 62 | __be32 entity_size; |
| 63 | __be32 first_byte_offset; |
Eric Dumazet | ba2d358 | 2010-06-02 18:10:09 +0000 | [diff] [blame] | 64 | } __packed; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 65 | |
| 66 | #define MLX4_MPT_FLAG_SW_OWNS (0xfUL << 28) |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 67 | #define MLX4_MPT_FLAG_FREE (0x3UL << 28) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 68 | #define MLX4_MPT_FLAG_MIO (1 << 17) |
| 69 | #define MLX4_MPT_FLAG_BIND_ENABLE (1 << 15) |
| 70 | #define MLX4_MPT_FLAG_PHYSICAL (1 << 9) |
| 71 | #define MLX4_MPT_FLAG_REGION (1 << 8) |
| 72 | |
Vladimir Sokolovsky | c925743 | 2008-09-02 13:38:29 -0700 | [diff] [blame] | 73 | #define MLX4_MPT_PD_FLAG_FAST_REG (1 << 27) |
| 74 | #define MLX4_MPT_PD_FLAG_RAE (1 << 28) |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 75 | #define MLX4_MPT_PD_FLAG_EN_INV (3 << 24) |
| 76 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 77 | #define MLX4_MPT_STATUS_SW 0xF0 |
| 78 | #define MLX4_MPT_STATUS_HW 0x00 |
| 79 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 80 | static u32 mlx4_buddy_alloc(struct mlx4_buddy *buddy, int order) |
| 81 | { |
| 82 | int o; |
| 83 | int m; |
| 84 | u32 seg; |
| 85 | |
| 86 | spin_lock(&buddy->lock); |
| 87 | |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 88 | for (o = order; o <= buddy->max_order; ++o) |
| 89 | if (buddy->num_free[o]) { |
| 90 | m = 1 << (buddy->max_order - o); |
| 91 | seg = find_first_bit(buddy->bits[o], m); |
| 92 | if (seg < m) |
| 93 | goto found; |
| 94 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 95 | |
| 96 | spin_unlock(&buddy->lock); |
| 97 | return -1; |
| 98 | |
| 99 | found: |
| 100 | clear_bit(seg, buddy->bits[o]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 101 | --buddy->num_free[o]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 102 | |
| 103 | while (o > order) { |
| 104 | --o; |
| 105 | seg <<= 1; |
| 106 | set_bit(seg ^ 1, buddy->bits[o]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 107 | ++buddy->num_free[o]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | spin_unlock(&buddy->lock); |
| 111 | |
| 112 | seg <<= order; |
| 113 | |
| 114 | return seg; |
| 115 | } |
| 116 | |
| 117 | static void mlx4_buddy_free(struct mlx4_buddy *buddy, u32 seg, int order) |
| 118 | { |
| 119 | seg >>= order; |
| 120 | |
| 121 | spin_lock(&buddy->lock); |
| 122 | |
| 123 | while (test_bit(seg ^ 1, buddy->bits[order])) { |
| 124 | clear_bit(seg ^ 1, buddy->bits[order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 125 | --buddy->num_free[order]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 126 | seg >>= 1; |
| 127 | ++order; |
| 128 | } |
| 129 | |
| 130 | set_bit(seg, buddy->bits[order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 131 | ++buddy->num_free[order]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 132 | |
| 133 | spin_unlock(&buddy->lock); |
| 134 | } |
| 135 | |
Roland Dreier | e8f9b2e | 2008-02-04 20:20:41 -0800 | [diff] [blame] | 136 | static int mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 137 | { |
| 138 | int i, s; |
| 139 | |
| 140 | buddy->max_order = max_order; |
| 141 | spin_lock_init(&buddy->lock); |
| 142 | |
| 143 | buddy->bits = kzalloc((buddy->max_order + 1) * sizeof (long *), |
| 144 | GFP_KERNEL); |
Eli Cohen | a831275 | 2011-10-06 09:33:12 -0700 | [diff] [blame] | 145 | buddy->num_free = kcalloc((buddy->max_order + 1), sizeof *buddy->num_free, |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 146 | GFP_KERNEL); |
| 147 | if (!buddy->bits || !buddy->num_free) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 148 | goto err_out; |
| 149 | |
| 150 | for (i = 0; i <= buddy->max_order; ++i) { |
| 151 | s = BITS_TO_LONGS(1 << (buddy->max_order - i)); |
| 152 | buddy->bits[i] = kmalloc(s * sizeof (long), GFP_KERNEL); |
| 153 | if (!buddy->bits[i]) |
| 154 | goto err_out_free; |
| 155 | bitmap_zero(buddy->bits[i], 1 << (buddy->max_order - i)); |
| 156 | } |
| 157 | |
| 158 | set_bit(0, buddy->bits[buddy->max_order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 159 | buddy->num_free[buddy->max_order] = 1; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 160 | |
| 161 | return 0; |
| 162 | |
| 163 | err_out_free: |
| 164 | for (i = 0; i <= buddy->max_order; ++i) |
| 165 | kfree(buddy->bits[i]); |
| 166 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 167 | err_out: |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 168 | kfree(buddy->bits); |
| 169 | kfree(buddy->num_free); |
| 170 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 171 | return -ENOMEM; |
| 172 | } |
| 173 | |
| 174 | static void mlx4_buddy_cleanup(struct mlx4_buddy *buddy) |
| 175 | { |
| 176 | int i; |
| 177 | |
| 178 | for (i = 0; i <= buddy->max_order; ++i) |
| 179 | kfree(buddy->bits[i]); |
| 180 | |
| 181 | kfree(buddy->bits); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 182 | kfree(buddy->num_free); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 183 | } |
| 184 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 185 | static u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 186 | { |
| 187 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 188 | u32 seg; |
| 189 | |
| 190 | seg = mlx4_buddy_alloc(&mr_table->mtt_buddy, order); |
| 191 | if (seg == -1) |
| 192 | return -1; |
| 193 | |
| 194 | if (mlx4_table_get_range(dev, &mr_table->mtt_table, seg, |
| 195 | seg + (1 << order) - 1)) { |
| 196 | mlx4_buddy_free(&mr_table->mtt_buddy, seg, order); |
| 197 | return -1; |
| 198 | } |
| 199 | |
| 200 | return seg; |
| 201 | } |
| 202 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 203 | static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
| 204 | { |
| 205 | u64 in_param; |
| 206 | u64 out_param; |
| 207 | int err; |
| 208 | |
| 209 | if (mlx4_is_mfunc(dev)) { |
| 210 | set_param_l(&in_param, order); |
| 211 | err = mlx4_cmd_imm(dev, in_param, &out_param, RES_MTT, |
| 212 | RES_OP_RESERVE_AND_MAP, |
| 213 | MLX4_CMD_ALLOC_RES, |
| 214 | MLX4_CMD_TIME_CLASS_A, |
| 215 | MLX4_CMD_WRAPPED); |
| 216 | if (err) |
| 217 | return -1; |
| 218 | return get_param_l(&out_param); |
| 219 | } |
| 220 | return __mlx4_alloc_mtt_range(dev, order); |
| 221 | } |
| 222 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 223 | int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, |
| 224 | struct mlx4_mtt *mtt) |
| 225 | { |
| 226 | int i; |
| 227 | |
| 228 | if (!npages) { |
| 229 | mtt->order = -1; |
| 230 | mtt->page_shift = MLX4_ICM_PAGE_SHIFT; |
| 231 | return 0; |
| 232 | } else |
| 233 | mtt->page_shift = page_shift; |
| 234 | |
Eli Cohen | ab6bf42 | 2009-05-27 14:38:34 -0700 | [diff] [blame] | 235 | for (mtt->order = 0, i = dev->caps.mtts_per_seg; i < npages; i <<= 1) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 236 | ++mtt->order; |
| 237 | |
| 238 | mtt->first_seg = mlx4_alloc_mtt_range(dev, mtt->order); |
| 239 | if (mtt->first_seg == -1) |
| 240 | return -ENOMEM; |
| 241 | |
| 242 | return 0; |
| 243 | } |
| 244 | EXPORT_SYMBOL_GPL(mlx4_mtt_init); |
| 245 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 246 | static void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 first_seg, |
| 247 | int order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 248 | { |
| 249 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 250 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 251 | mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, order); |
| 252 | mlx4_table_put_range(dev, &mr_table->mtt_table, first_seg, |
| 253 | first_seg + (1 << order) - 1); |
| 254 | } |
| 255 | |
| 256 | static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 first_seg, int order) |
| 257 | { |
| 258 | u64 in_param; |
| 259 | int err; |
| 260 | |
| 261 | if (mlx4_is_mfunc(dev)) { |
| 262 | set_param_l(&in_param, first_seg); |
| 263 | set_param_h(&in_param, order); |
| 264 | err = mlx4_cmd(dev, in_param, RES_MTT, RES_OP_RESERVE_AND_MAP, |
| 265 | MLX4_CMD_FREE_RES, |
| 266 | MLX4_CMD_TIME_CLASS_A, |
| 267 | MLX4_CMD_WRAPPED); |
| 268 | if (err) |
| 269 | mlx4_warn(dev, "Failed to free mtt range at:%d" |
| 270 | " order:%d\n", first_seg, order); |
| 271 | return; |
| 272 | } |
| 273 | __mlx4_free_mtt_range(dev, first_seg, order); |
| 274 | } |
| 275 | |
| 276 | void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
| 277 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 278 | if (mtt->order < 0) |
| 279 | return; |
| 280 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 281 | mlx4_free_mtt_range(dev, mtt->first_seg, mtt->order); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 282 | } |
| 283 | EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup); |
| 284 | |
| 285 | u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
| 286 | { |
| 287 | return (u64) mtt->first_seg * dev->caps.mtt_entry_sz; |
| 288 | } |
| 289 | EXPORT_SYMBOL_GPL(mlx4_mtt_addr); |
| 290 | |
| 291 | static u32 hw_index_to_key(u32 ind) |
| 292 | { |
| 293 | return (ind >> 24) | (ind << 8); |
| 294 | } |
| 295 | |
| 296 | static u32 key_to_hw_index(u32 key) |
| 297 | { |
| 298 | return (key << 24) | (key >> 8); |
| 299 | } |
| 300 | |
| 301 | static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 302 | int mpt_index) |
| 303 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 304 | return mlx4_cmd(dev, mailbox->dma | dev->caps.function , mpt_index, |
| 305 | 0, MLX4_CMD_SW2HW_MPT, MLX4_CMD_TIME_CLASS_B, |
| 306 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 310 | int mpt_index) |
| 311 | { |
| 312 | return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 313 | !mailbox, MLX4_CMD_HW2SW_MPT, |
| 314 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 315 | } |
| 316 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 317 | static int mlx4_mr_reserve_range(struct mlx4_dev *dev, int cnt, int align, |
| 318 | u32 *base_mridx) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 319 | { |
| 320 | struct mlx4_priv *priv = mlx4_priv(dev); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 321 | u32 mridx; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 322 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 323 | mridx = mlx4_bitmap_alloc_range(&priv->mr_table.mpt_bitmap, cnt, align); |
| 324 | if (mridx == -1) |
Jack Morgenstein | 0172e2e | 2007-07-26 11:16:58 +0300 | [diff] [blame] | 325 | return -ENOMEM; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 326 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 327 | *base_mridx = mridx; |
| 328 | return 0; |
| 329 | |
| 330 | } |
| 331 | EXPORT_SYMBOL_GPL(mlx4_mr_reserve_range); |
| 332 | |
| 333 | static void mlx4_mr_release_range(struct mlx4_dev *dev, u32 base_mridx, int cnt) |
| 334 | { |
| 335 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 336 | mlx4_bitmap_free_range(&priv->mr_table.mpt_bitmap, base_mridx, cnt); |
| 337 | } |
| 338 | EXPORT_SYMBOL_GPL(mlx4_mr_release_range); |
| 339 | |
| 340 | static int mlx4_mr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, u32 pd, |
| 341 | u64 iova, u64 size, u32 access, int npages, |
| 342 | int page_shift, struct mlx4_mr *mr) |
| 343 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 344 | mr->iova = iova; |
| 345 | mr->size = size; |
| 346 | mr->pd = pd; |
| 347 | mr->access = access; |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 348 | mr->enabled = MLX4_MR_DISABLED; |
| 349 | mr->key = hw_index_to_key(mridx); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 350 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 351 | return mlx4_mtt_init(dev, npages, page_shift, &mr->mtt); |
| 352 | } |
| 353 | EXPORT_SYMBOL_GPL(mlx4_mr_alloc_reserved); |
| 354 | |
| 355 | static int mlx4_WRITE_MTT(struct mlx4_dev *dev, |
| 356 | struct mlx4_cmd_mailbox *mailbox, |
| 357 | int num_entries) |
| 358 | { |
| 359 | return mlx4_cmd(dev, mailbox->dma, num_entries, 0, MLX4_CMD_WRITE_MTT, |
| 360 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
| 361 | } |
| 362 | |
| 363 | static int __mlx4_mr_reserve(struct mlx4_dev *dev) |
| 364 | { |
| 365 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 366 | |
| 367 | return mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap); |
| 368 | } |
| 369 | |
| 370 | static int mlx4_mr_reserve(struct mlx4_dev *dev) |
| 371 | { |
| 372 | u64 out_param; |
| 373 | |
| 374 | if (mlx4_is_mfunc(dev)) { |
| 375 | if (mlx4_cmd_imm(dev, 0, &out_param, RES_MPT, RES_OP_RESERVE, |
| 376 | MLX4_CMD_ALLOC_RES, |
| 377 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
| 378 | return -1; |
| 379 | return get_param_l(&out_param); |
| 380 | } |
| 381 | return __mlx4_mr_reserve(dev); |
| 382 | } |
| 383 | |
| 384 | static void __mlx4_mr_release(struct mlx4_dev *dev, u32 index) |
| 385 | { |
| 386 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 387 | |
| 388 | mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index); |
| 389 | } |
| 390 | |
| 391 | static void mlx4_mr_release(struct mlx4_dev *dev, u32 index) |
| 392 | { |
| 393 | u64 in_param; |
| 394 | |
| 395 | if (mlx4_is_mfunc(dev)) { |
| 396 | set_param_l(&in_param, index); |
| 397 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_RESERVE, |
| 398 | MLX4_CMD_FREE_RES, |
| 399 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
| 400 | mlx4_warn(dev, "Failed to release mr index:%d\n", |
| 401 | index); |
| 402 | return; |
| 403 | } |
| 404 | __mlx4_mr_release(dev, index); |
| 405 | } |
| 406 | |
| 407 | static int __mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index) |
| 408 | { |
| 409 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 410 | |
| 411 | return mlx4_table_get(dev, &mr_table->dmpt_table, index); |
| 412 | } |
| 413 | |
| 414 | static int mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index) |
| 415 | { |
| 416 | u64 param; |
| 417 | |
| 418 | if (mlx4_is_mfunc(dev)) { |
| 419 | set_param_l(¶m, index); |
| 420 | return mlx4_cmd_imm(dev, param, ¶m, RES_MPT, RES_OP_MAP_ICM, |
| 421 | MLX4_CMD_ALLOC_RES, |
| 422 | MLX4_CMD_TIME_CLASS_A, |
| 423 | MLX4_CMD_WRAPPED); |
| 424 | } |
| 425 | return __mlx4_mr_alloc_icm(dev, index); |
| 426 | } |
| 427 | |
| 428 | static void __mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index) |
| 429 | { |
| 430 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 431 | |
| 432 | mlx4_table_put(dev, &mr_table->dmpt_table, index); |
| 433 | } |
| 434 | |
| 435 | static void mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index) |
| 436 | { |
| 437 | u64 in_param; |
| 438 | |
| 439 | if (mlx4_is_mfunc(dev)) { |
| 440 | set_param_l(&in_param, index); |
| 441 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_MAP_ICM, |
| 442 | MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, |
| 443 | MLX4_CMD_WRAPPED)) |
| 444 | mlx4_warn(dev, "Failed to free icm of mr index:%d\n", |
| 445 | index); |
| 446 | return; |
| 447 | } |
| 448 | return __mlx4_mr_free_icm(dev, index); |
| 449 | } |
| 450 | |
| 451 | int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, |
| 452 | int npages, int page_shift, struct mlx4_mr *mr) |
| 453 | { |
| 454 | u32 index; |
| 455 | int err; |
| 456 | |
| 457 | index = mlx4_mr_reserve(dev); |
| 458 | if (index == -1) |
| 459 | return -ENOMEM; |
| 460 | |
| 461 | err = mlx4_mr_alloc_reserved(dev, index, pd, iova, size, |
| 462 | access, npages, page_shift, mr); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 463 | if (err) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 464 | mlx4_mr_release(dev, index); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 465 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 466 | return err; |
| 467 | } |
| 468 | EXPORT_SYMBOL_GPL(mlx4_mr_alloc); |
| 469 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 470 | static void mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 471 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 472 | int err; |
| 473 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 474 | if (mr->enabled == MLX4_MR_EN_HW) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 475 | err = mlx4_HW2SW_MPT(dev, NULL, |
| 476 | key_to_hw_index(mr->key) & |
| 477 | (dev->caps.num_mpts - 1)); |
| 478 | if (err) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 479 | mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 480 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 481 | mr->enabled = MLX4_MR_EN_SW; |
| 482 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 483 | mlx4_mtt_cleanup(dev, &mr->mtt); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 484 | } |
| 485 | EXPORT_SYMBOL_GPL(mlx4_mr_free_reserved); |
| 486 | |
| 487 | void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr) |
| 488 | { |
| 489 | mlx4_mr_free_reserved(dev, mr); |
| 490 | if (mr->enabled) |
| 491 | mlx4_mr_free_icm(dev, key_to_hw_index(mr->key)); |
| 492 | mlx4_mr_release(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 493 | } |
| 494 | EXPORT_SYMBOL_GPL(mlx4_mr_free); |
| 495 | |
| 496 | int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) |
| 497 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 498 | struct mlx4_cmd_mailbox *mailbox; |
| 499 | struct mlx4_mpt_entry *mpt_entry; |
| 500 | int err; |
| 501 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 502 | err = mlx4_mr_alloc_icm(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 503 | if (err) |
| 504 | return err; |
| 505 | |
| 506 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 507 | if (IS_ERR(mailbox)) { |
| 508 | err = PTR_ERR(mailbox); |
| 509 | goto err_table; |
| 510 | } |
| 511 | mpt_entry = mailbox->buf; |
| 512 | |
| 513 | memset(mpt_entry, 0, sizeof *mpt_entry); |
| 514 | |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 515 | mpt_entry->flags = cpu_to_be32(MLX4_MPT_FLAG_MIO | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 516 | MLX4_MPT_FLAG_REGION | |
| 517 | mr->access); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 518 | |
| 519 | mpt_entry->key = cpu_to_be32(key_to_hw_index(mr->key)); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 520 | mpt_entry->pd_flags = cpu_to_be32(mr->pd | MLX4_MPT_PD_FLAG_EN_INV); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 521 | mpt_entry->start = cpu_to_be64(mr->iova); |
| 522 | mpt_entry->length = cpu_to_be64(mr->size); |
| 523 | mpt_entry->entity_size = cpu_to_be32(mr->mtt.page_shift); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 524 | |
Jack Morgenstein | b2d9308 | 2007-06-07 23:24:38 -0700 | [diff] [blame] | 525 | if (mr->mtt.order < 0) { |
| 526 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL); |
| 527 | mpt_entry->mtt_seg = 0; |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 528 | } else { |
Jack Morgenstein | b2d9308 | 2007-06-07 23:24:38 -0700 | [diff] [blame] | 529 | mpt_entry->mtt_seg = cpu_to_be64(mlx4_mtt_addr(dev, &mr->mtt)); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) { |
| 533 | /* fast register MR in free state */ |
| 534 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); |
Vladimir Sokolovsky | c925743 | 2008-09-02 13:38:29 -0700 | [diff] [blame] | 535 | mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | |
| 536 | MLX4_MPT_PD_FLAG_RAE); |
| 537 | mpt_entry->mtt_sz = cpu_to_be32((1 << mr->mtt.order) * |
Eli Cohen | ab6bf42 | 2009-05-27 14:38:34 -0700 | [diff] [blame] | 538 | dev->caps.mtts_per_seg); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 539 | } else { |
| 540 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); |
| 541 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 542 | |
| 543 | err = mlx4_SW2HW_MPT(dev, mailbox, |
| 544 | key_to_hw_index(mr->key) & (dev->caps.num_mpts - 1)); |
| 545 | if (err) { |
| 546 | mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
| 547 | goto err_cmd; |
| 548 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 549 | mr->enabled = MLX4_MR_EN_HW; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 550 | |
| 551 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 552 | |
| 553 | return 0; |
| 554 | |
| 555 | err_cmd: |
| 556 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 557 | |
| 558 | err_table: |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 559 | mlx4_mr_free_icm(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 560 | return err; |
| 561 | } |
| 562 | EXPORT_SYMBOL_GPL(mlx4_mr_enable); |
| 563 | |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 564 | static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 565 | int start_index, int npages, u64 *page_list) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 566 | { |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 567 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 568 | __be64 *mtts; |
| 569 | dma_addr_t dma_handle; |
| 570 | int i; |
| 571 | int s = start_index * sizeof (u64); |
| 572 | |
| 573 | /* All MTTs must fit in the same page */ |
| 574 | if (start_index / (PAGE_SIZE / sizeof (u64)) != |
| 575 | (start_index + npages - 1) / (PAGE_SIZE / sizeof (u64))) |
| 576 | return -EINVAL; |
| 577 | |
Eli Cohen | ab6bf42 | 2009-05-27 14:38:34 -0700 | [diff] [blame] | 578 | if (start_index & (dev->caps.mtts_per_seg - 1)) |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 579 | return -EINVAL; |
| 580 | |
| 581 | mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->first_seg + |
| 582 | s / dev->caps.mtt_entry_sz, &dma_handle); |
| 583 | if (!mtts) |
| 584 | return -ENOMEM; |
| 585 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 586 | dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, |
| 587 | npages * sizeof (u64), DMA_TO_DEVICE); |
| 588 | |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 589 | for (i = 0; i < npages; ++i) |
| 590 | mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); |
| 591 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 592 | dma_sync_single_for_device(&dev->pdev->dev, dma_handle, |
| 593 | npages * sizeof (u64), DMA_TO_DEVICE); |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 594 | |
| 595 | return 0; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 596 | } |
| 597 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 598 | static int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 599 | int start_index, int npages, u64 *page_list) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 600 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 601 | int err = 0; |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 602 | int chunk; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 603 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 604 | while (npages > 0) { |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 605 | chunk = min_t(int, PAGE_SIZE / sizeof(u64), npages); |
| 606 | err = mlx4_write_mtt_chunk(dev, mtt, start_index, chunk, page_list); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 607 | if (err) |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 608 | return err; |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 609 | npages -= chunk; |
| 610 | start_index += chunk; |
| 611 | page_list += chunk; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 612 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 613 | return err; |
| 614 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 615 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 616 | int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 617 | int start_index, int npages, u64 *page_list) |
| 618 | { |
| 619 | struct mlx4_cmd_mailbox *mailbox = NULL; |
| 620 | __be64 *inbox = NULL; |
| 621 | int chunk; |
| 622 | int err = 0; |
| 623 | int i; |
| 624 | |
| 625 | if (mtt->order < 0) |
| 626 | return -EINVAL; |
| 627 | |
| 628 | if (mlx4_is_mfunc(dev)) { |
| 629 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 630 | if (IS_ERR(mailbox)) |
| 631 | return PTR_ERR(mailbox); |
| 632 | inbox = mailbox->buf; |
| 633 | |
| 634 | while (npages > 0) { |
| 635 | int s = mtt->first_seg * dev->caps.mtts_per_seg + |
| 636 | start_index; |
| 637 | chunk = min_t(int, MLX4_MAILBOX_SIZE / sizeof(u64) - |
| 638 | dev->caps.mtts_per_seg, npages); |
| 639 | if (s / (PAGE_SIZE / sizeof(u64)) != |
| 640 | (s + chunk - 1) / (PAGE_SIZE / sizeof(u64))) |
| 641 | chunk = PAGE_SIZE / sizeof(u64) - |
| 642 | (s % (PAGE_SIZE / sizeof(u64))); |
| 643 | |
| 644 | inbox[0] = cpu_to_be64(mtt->first_seg * |
| 645 | dev->caps.mtts_per_seg + |
| 646 | start_index); |
| 647 | inbox[1] = 0; |
| 648 | for (i = 0; i < chunk; ++i) |
| 649 | inbox[i + 2] = cpu_to_be64(page_list[i] | |
| 650 | MLX4_MTT_FLAG_PRESENT); |
| 651 | err = mlx4_WRITE_MTT(dev, mailbox, chunk); |
| 652 | if (err) { |
| 653 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 654 | return err; |
| 655 | } |
| 656 | |
| 657 | npages -= chunk; |
| 658 | start_index += chunk; |
| 659 | page_list += chunk; |
| 660 | } |
| 661 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 662 | return err; |
| 663 | } |
| 664 | |
| 665 | return __mlx4_write_mtt(dev, mtt, start_index, npages, page_list); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 666 | } |
| 667 | EXPORT_SYMBOL_GPL(mlx4_write_mtt); |
| 668 | |
| 669 | int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 670 | struct mlx4_buf *buf) |
| 671 | { |
| 672 | u64 *page_list; |
| 673 | int err; |
| 674 | int i; |
| 675 | |
| 676 | page_list = kmalloc(buf->npages * sizeof *page_list, GFP_KERNEL); |
| 677 | if (!page_list) |
| 678 | return -ENOMEM; |
| 679 | |
| 680 | for (i = 0; i < buf->npages; ++i) |
| 681 | if (buf->nbufs == 1) |
Roland Dreier | b57aacf | 2008-02-06 21:17:59 -0800 | [diff] [blame] | 682 | page_list[i] = buf->direct.map + (i << buf->page_shift); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 683 | else |
Roland Dreier | b57aacf | 2008-02-06 21:17:59 -0800 | [diff] [blame] | 684 | page_list[i] = buf->page_list[i].map; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 685 | |
| 686 | err = mlx4_write_mtt(dev, mtt, 0, buf->npages, page_list); |
| 687 | |
| 688 | kfree(page_list); |
| 689 | return err; |
| 690 | } |
| 691 | EXPORT_SYMBOL_GPL(mlx4_buf_write_mtt); |
| 692 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 693 | int mlx4_init_mr_table(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 694 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 695 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 696 | struct mlx4_mr_table *mr_table = &priv->mr_table; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 697 | int err; |
| 698 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 699 | if (!is_power_of_2(dev->caps.num_mpts)) |
| 700 | return -EINVAL; |
| 701 | |
| 702 | /* Nothing to do for slaves - all MR handling is forwarded |
| 703 | * to the master */ |
| 704 | if (mlx4_is_slave(dev)) |
| 705 | return 0; |
| 706 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 707 | err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts, |
Yevgeny Petrilin | 93fc9e1 | 2008-10-22 10:25:29 -0700 | [diff] [blame] | 708 | ~0, dev->caps.reserved_mrws, 0); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 709 | if (err) |
| 710 | return err; |
| 711 | |
| 712 | err = mlx4_buddy_init(&mr_table->mtt_buddy, |
| 713 | ilog2(dev->caps.num_mtt_segs)); |
| 714 | if (err) |
| 715 | goto err_buddy; |
| 716 | |
| 717 | if (dev->caps.reserved_mtts) { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 718 | priv->reserved_mtts = |
| 719 | mlx4_alloc_mtt_range(dev, |
| 720 | fls(dev->caps.reserved_mtts - 1)); |
| 721 | if (priv->reserved_mtts < 0) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 722 | mlx4_warn(dev, "MTT table of order %d is too small.\n", |
| 723 | mr_table->mtt_buddy.max_order); |
| 724 | err = -ENOMEM; |
| 725 | goto err_reserve_mtts; |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | return 0; |
| 730 | |
| 731 | err_reserve_mtts: |
| 732 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
| 733 | |
| 734 | err_buddy: |
| 735 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
| 736 | |
| 737 | return err; |
| 738 | } |
| 739 | |
| 740 | void mlx4_cleanup_mr_table(struct mlx4_dev *dev) |
| 741 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 742 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 743 | struct mlx4_mr_table *mr_table = &priv->mr_table; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 744 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 745 | if (mlx4_is_slave(dev)) |
| 746 | return; |
| 747 | if (priv->reserved_mtts >= 0) |
| 748 | mlx4_free_mtt_range(dev, priv->reserved_mtts, |
| 749 | fls(dev->caps.reserved_mtts - 1)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 750 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
| 751 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
| 752 | } |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 753 | |
| 754 | static inline int mlx4_check_fmr(struct mlx4_fmr *fmr, u64 *page_list, |
| 755 | int npages, u64 iova) |
| 756 | { |
| 757 | int i, page_mask; |
| 758 | |
| 759 | if (npages > fmr->max_pages) |
| 760 | return -EINVAL; |
| 761 | |
| 762 | page_mask = (1 << fmr->page_shift) - 1; |
| 763 | |
| 764 | /* We are getting page lists, so va must be page aligned. */ |
| 765 | if (iova & page_mask) |
| 766 | return -EINVAL; |
| 767 | |
| 768 | /* Trust the user not to pass misaligned data in page_list */ |
| 769 | if (0) |
| 770 | for (i = 0; i < npages; ++i) { |
| 771 | if (page_list[i] & ~page_mask) |
| 772 | return -EINVAL; |
| 773 | } |
| 774 | |
| 775 | if (fmr->maps >= fmr->max_maps) |
| 776 | return -EINVAL; |
| 777 | |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list, |
| 782 | int npages, u64 iova, u32 *lkey, u32 *rkey) |
| 783 | { |
| 784 | u32 key; |
| 785 | int i, err; |
| 786 | |
| 787 | err = mlx4_check_fmr(fmr, page_list, npages, iova); |
| 788 | if (err) |
| 789 | return err; |
| 790 | |
| 791 | ++fmr->maps; |
| 792 | |
| 793 | key = key_to_hw_index(fmr->mr.key); |
| 794 | key += dev->caps.num_mpts; |
| 795 | *lkey = *rkey = fmr->mr.key = hw_index_to_key(key); |
| 796 | |
| 797 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_SW; |
| 798 | |
| 799 | /* Make sure MPT status is visible before writing MTT entries */ |
| 800 | wmb(); |
| 801 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 802 | dma_sync_single_for_cpu(&dev->pdev->dev, fmr->dma_handle, |
| 803 | npages * sizeof(u64), DMA_TO_DEVICE); |
| 804 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 805 | for (i = 0; i < npages; ++i) |
| 806 | fmr->mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); |
| 807 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 808 | dma_sync_single_for_device(&dev->pdev->dev, fmr->dma_handle, |
| 809 | npages * sizeof(u64), DMA_TO_DEVICE); |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 810 | |
| 811 | fmr->mpt->key = cpu_to_be32(key); |
| 812 | fmr->mpt->lkey = cpu_to_be32(key); |
| 813 | fmr->mpt->length = cpu_to_be64(npages * (1ull << fmr->page_shift)); |
| 814 | fmr->mpt->start = cpu_to_be64(iova); |
| 815 | |
| 816 | /* Make MTT entries are visible before setting MPT status */ |
| 817 | wmb(); |
| 818 | |
| 819 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_HW; |
| 820 | |
| 821 | /* Make sure MPT status is visible before consumer can use FMR */ |
| 822 | wmb(); |
| 823 | |
| 824 | return 0; |
| 825 | } |
| 826 | EXPORT_SYMBOL_GPL(mlx4_map_phys_fmr); |
| 827 | |
| 828 | int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages, |
| 829 | int max_maps, u8 page_shift, struct mlx4_fmr *fmr) |
| 830 | { |
| 831 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 832 | u64 mtt_seg; |
| 833 | int err = -ENOMEM; |
| 834 | |
Oren Duer | c5057dd | 2008-05-05 15:56:52 -0700 | [diff] [blame] | 835 | if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32) |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 836 | return -EINVAL; |
| 837 | |
| 838 | /* All MTTs must fit in the same page */ |
| 839 | if (max_pages * sizeof *fmr->mtts > PAGE_SIZE) |
| 840 | return -EINVAL; |
| 841 | |
| 842 | fmr->page_shift = page_shift; |
| 843 | fmr->max_pages = max_pages; |
| 844 | fmr->max_maps = max_maps; |
| 845 | fmr->maps = 0; |
| 846 | |
| 847 | err = mlx4_mr_alloc(dev, pd, 0, 0, access, max_pages, |
| 848 | page_shift, &fmr->mr); |
| 849 | if (err) |
| 850 | return err; |
| 851 | |
| 852 | mtt_seg = fmr->mr.mtt.first_seg * dev->caps.mtt_entry_sz; |
| 853 | |
| 854 | fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table, |
| 855 | fmr->mr.mtt.first_seg, |
| 856 | &fmr->dma_handle); |
| 857 | if (!fmr->mtts) { |
| 858 | err = -ENOMEM; |
| 859 | goto err_free; |
| 860 | } |
| 861 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 862 | return 0; |
| 863 | |
| 864 | err_free: |
| 865 | mlx4_mr_free(dev, &fmr->mr); |
| 866 | return err; |
| 867 | } |
| 868 | EXPORT_SYMBOL_GPL(mlx4_fmr_alloc); |
| 869 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 870 | static int mlx4_fmr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, |
| 871 | u32 pd, u32 access, int max_pages, |
| 872 | int max_maps, u8 page_shift, struct mlx4_fmr *fmr) |
| 873 | { |
| 874 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 875 | int err = -ENOMEM; |
| 876 | |
| 877 | if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32) |
| 878 | return -EINVAL; |
| 879 | |
| 880 | /* All MTTs must fit in the same page */ |
| 881 | if (max_pages * sizeof *fmr->mtts > PAGE_SIZE) |
| 882 | return -EINVAL; |
| 883 | |
| 884 | fmr->page_shift = page_shift; |
| 885 | fmr->max_pages = max_pages; |
| 886 | fmr->max_maps = max_maps; |
| 887 | fmr->maps = 0; |
| 888 | |
| 889 | err = mlx4_mr_alloc_reserved(dev, mridx, pd, 0, 0, access, max_pages, |
| 890 | page_shift, &fmr->mr); |
| 891 | if (err) |
| 892 | return err; |
| 893 | |
| 894 | fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table, |
| 895 | fmr->mr.mtt.first_seg, |
| 896 | &fmr->dma_handle); |
| 897 | if (!fmr->mtts) { |
| 898 | err = -ENOMEM; |
| 899 | goto err_free; |
| 900 | } |
| 901 | |
| 902 | return 0; |
| 903 | |
| 904 | err_free: |
| 905 | mlx4_mr_free_reserved(dev, &fmr->mr); |
| 906 | return err; |
| 907 | } |
| 908 | EXPORT_SYMBOL_GPL(mlx4_fmr_alloc_reserved); |
| 909 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 910 | int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr) |
| 911 | { |
Jack Morgenstein | 11e75a7 | 2008-02-14 13:41:29 +0200 | [diff] [blame] | 912 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 913 | int err; |
| 914 | |
| 915 | err = mlx4_mr_enable(dev, &fmr->mr); |
| 916 | if (err) |
| 917 | return err; |
| 918 | |
| 919 | fmr->mpt = mlx4_table_find(&priv->mr_table.dmpt_table, |
| 920 | key_to_hw_index(fmr->mr.key), NULL); |
| 921 | if (!fmr->mpt) |
| 922 | return -ENOMEM; |
| 923 | |
| 924 | return 0; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 925 | } |
| 926 | EXPORT_SYMBOL_GPL(mlx4_fmr_enable); |
| 927 | |
| 928 | void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr, |
| 929 | u32 *lkey, u32 *rkey) |
| 930 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 931 | struct mlx4_cmd_mailbox *mailbox; |
| 932 | int err; |
| 933 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 934 | if (!fmr->maps) |
| 935 | return; |
| 936 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 937 | fmr->maps = 0; |
| 938 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 939 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 940 | if (IS_ERR(mailbox)) { |
| 941 | err = PTR_ERR(mailbox); |
| 942 | printk(KERN_WARNING "mlx4_ib: mlx4_alloc_cmd_mailbox" |
| 943 | " failed (%d)\n", err); |
| 944 | return; |
| 945 | } |
| 946 | |
| 947 | err = mlx4_HW2SW_MPT(dev, NULL, |
| 948 | key_to_hw_index(fmr->mr.key) & |
| 949 | (dev->caps.num_mpts - 1)); |
| 950 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 951 | if (err) { |
| 952 | printk(KERN_WARNING "mlx4_ib: mlx4_HW2SW_MPT failed (%d)\n", |
| 953 | err); |
| 954 | return; |
| 955 | } |
| 956 | fmr->mr.enabled = MLX4_MR_EN_SW; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 957 | } |
| 958 | EXPORT_SYMBOL_GPL(mlx4_fmr_unmap); |
| 959 | |
| 960 | int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr) |
| 961 | { |
| 962 | if (fmr->maps) |
| 963 | return -EBUSY; |
| 964 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 965 | mlx4_mr_free(dev, &fmr->mr); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 966 | fmr->mr.enabled = MLX4_MR_DISABLED; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 967 | |
| 968 | return 0; |
| 969 | } |
| 970 | EXPORT_SYMBOL_GPL(mlx4_fmr_free); |
| 971 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame^] | 972 | static int mlx4_fmr_free_reserved(struct mlx4_dev *dev, struct mlx4_fmr *fmr) |
| 973 | { |
| 974 | if (fmr->maps) |
| 975 | return -EBUSY; |
| 976 | |
| 977 | mlx4_mr_free_reserved(dev, &fmr->mr); |
| 978 | fmr->mr.enabled = MLX4_MR_DISABLED; |
| 979 | |
| 980 | return 0; |
| 981 | } |
| 982 | EXPORT_SYMBOL_GPL(mlx4_fmr_free_reserved); |
| 983 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 984 | int mlx4_SYNC_TPT(struct mlx4_dev *dev) |
| 985 | { |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 986 | return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, 1000, |
| 987 | MLX4_CMD_WRAPPED); |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 988 | } |
| 989 | EXPORT_SYMBOL_GPL(mlx4_SYNC_TPT); |