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> |
Yishai Hadas | 89dd86d | 2012-08-13 08:15:06 +0000 | [diff] [blame] | 40 | #include <linux/vmalloc.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 41 | |
| 42 | #include <linux/mlx4/cmd.h> |
| 43 | |
| 44 | #include "mlx4.h" |
| 45 | #include "icm.h" |
| 46 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 47 | #define MLX4_MPT_FLAG_SW_OWNS (0xfUL << 28) |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 48 | #define MLX4_MPT_FLAG_FREE (0x3UL << 28) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 49 | #define MLX4_MPT_FLAG_MIO (1 << 17) |
| 50 | #define MLX4_MPT_FLAG_BIND_ENABLE (1 << 15) |
| 51 | #define MLX4_MPT_FLAG_PHYSICAL (1 << 9) |
| 52 | #define MLX4_MPT_FLAG_REGION (1 << 8) |
| 53 | |
Vladimir Sokolovsky | c925743 | 2008-09-02 13:38:29 -0700 | [diff] [blame] | 54 | #define MLX4_MPT_PD_FLAG_FAST_REG (1 << 27) |
| 55 | #define MLX4_MPT_PD_FLAG_RAE (1 << 28) |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 56 | #define MLX4_MPT_PD_FLAG_EN_INV (3 << 24) |
| 57 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 58 | #define MLX4_MPT_STATUS_SW 0xF0 |
| 59 | #define MLX4_MPT_STATUS_HW 0x00 |
| 60 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 61 | static u32 mlx4_buddy_alloc(struct mlx4_buddy *buddy, int order) |
| 62 | { |
| 63 | int o; |
| 64 | int m; |
| 65 | u32 seg; |
| 66 | |
| 67 | spin_lock(&buddy->lock); |
| 68 | |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 69 | for (o = order; o <= buddy->max_order; ++o) |
| 70 | if (buddy->num_free[o]) { |
| 71 | m = 1 << (buddy->max_order - o); |
| 72 | seg = find_first_bit(buddy->bits[o], m); |
| 73 | if (seg < m) |
| 74 | goto found; |
| 75 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 76 | |
| 77 | spin_unlock(&buddy->lock); |
| 78 | return -1; |
| 79 | |
| 80 | found: |
| 81 | clear_bit(seg, buddy->bits[o]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 82 | --buddy->num_free[o]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 83 | |
| 84 | while (o > order) { |
| 85 | --o; |
| 86 | seg <<= 1; |
| 87 | set_bit(seg ^ 1, buddy->bits[o]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 88 | ++buddy->num_free[o]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | spin_unlock(&buddy->lock); |
| 92 | |
| 93 | seg <<= order; |
| 94 | |
| 95 | return seg; |
| 96 | } |
| 97 | |
| 98 | static void mlx4_buddy_free(struct mlx4_buddy *buddy, u32 seg, int order) |
| 99 | { |
| 100 | seg >>= order; |
| 101 | |
| 102 | spin_lock(&buddy->lock); |
| 103 | |
| 104 | while (test_bit(seg ^ 1, buddy->bits[order])) { |
| 105 | clear_bit(seg ^ 1, buddy->bits[order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 106 | --buddy->num_free[order]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 107 | seg >>= 1; |
| 108 | ++order; |
| 109 | } |
| 110 | |
| 111 | set_bit(seg, buddy->bits[order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 112 | ++buddy->num_free[order]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 113 | |
| 114 | spin_unlock(&buddy->lock); |
| 115 | } |
| 116 | |
Roland Dreier | e8f9b2e | 2008-02-04 20:20:41 -0800 | [diff] [blame] | 117 | static int mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 118 | { |
| 119 | int i, s; |
| 120 | |
| 121 | buddy->max_order = max_order; |
| 122 | spin_lock_init(&buddy->lock); |
| 123 | |
Roland Dreier | 96f17d5 | 2012-08-14 15:17:10 -0700 | [diff] [blame^] | 124 | buddy->bits = kcalloc(buddy->max_order + 1, sizeof (long *), |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 125 | GFP_KERNEL); |
Eli Cohen | a831275 | 2011-10-06 09:33:12 -0700 | [diff] [blame] | 126 | buddy->num_free = kcalloc((buddy->max_order + 1), sizeof *buddy->num_free, |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 127 | GFP_KERNEL); |
| 128 | if (!buddy->bits || !buddy->num_free) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 129 | goto err_out; |
| 130 | |
| 131 | for (i = 0; i <= buddy->max_order; ++i) { |
| 132 | s = BITS_TO_LONGS(1 << (buddy->max_order - i)); |
Roland Dreier | 96f17d5 | 2012-08-14 15:17:10 -0700 | [diff] [blame^] | 133 | buddy->bits[i] = kcalloc(s, sizeof (long), GFP_KERNEL | __GFP_NOWARN); |
Yishai Hadas | 89dd86d | 2012-08-13 08:15:06 +0000 | [diff] [blame] | 134 | if (!buddy->bits[i]) { |
Roland Dreier | 96f17d5 | 2012-08-14 15:17:10 -0700 | [diff] [blame^] | 135 | buddy->bits[i] = vzalloc(s * sizeof(long)); |
Yishai Hadas | 89dd86d | 2012-08-13 08:15:06 +0000 | [diff] [blame] | 136 | if (!buddy->bits[i]) |
| 137 | goto err_out_free; |
| 138 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | set_bit(0, buddy->bits[buddy->max_order]); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 142 | buddy->num_free[buddy->max_order] = 1; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 143 | |
| 144 | return 0; |
| 145 | |
| 146 | err_out_free: |
| 147 | for (i = 0; i <= buddy->max_order; ++i) |
Yishai Hadas | 89dd86d | 2012-08-13 08:15:06 +0000 | [diff] [blame] | 148 | if (buddy->bits[i] && is_vmalloc_addr(buddy->bits[i])) |
| 149 | vfree(buddy->bits[i]); |
| 150 | else |
| 151 | kfree(buddy->bits[i]); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 152 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 153 | err_out: |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 154 | kfree(buddy->bits); |
| 155 | kfree(buddy->num_free); |
| 156 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 157 | return -ENOMEM; |
| 158 | } |
| 159 | |
| 160 | static void mlx4_buddy_cleanup(struct mlx4_buddy *buddy) |
| 161 | { |
| 162 | int i; |
| 163 | |
| 164 | for (i = 0; i <= buddy->max_order; ++i) |
Yishai Hadas | 89dd86d | 2012-08-13 08:15:06 +0000 | [diff] [blame] | 165 | if (is_vmalloc_addr(buddy->bits[i])) |
| 166 | vfree(buddy->bits[i]); |
| 167 | else |
| 168 | kfree(buddy->bits[i]); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 169 | |
| 170 | kfree(buddy->bits); |
Roland Dreier | e4044cf | 2008-07-22 14:19:40 -0700 | [diff] [blame] | 171 | kfree(buddy->num_free); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 174 | u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 175 | { |
| 176 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 177 | u32 seg; |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 178 | int seg_order; |
| 179 | u32 offset; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 180 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 181 | seg_order = max_t(int, order - log_mtts_per_seg, 0); |
| 182 | |
| 183 | seg = mlx4_buddy_alloc(&mr_table->mtt_buddy, seg_order); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 184 | if (seg == -1) |
| 185 | return -1; |
| 186 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 187 | offset = seg * (1 << log_mtts_per_seg); |
| 188 | |
| 189 | if (mlx4_table_get_range(dev, &mr_table->mtt_table, offset, |
| 190 | offset + (1 << order) - 1)) { |
| 191 | mlx4_buddy_free(&mr_table->mtt_buddy, seg, seg_order); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 192 | return -1; |
| 193 | } |
| 194 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 195 | return offset; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 196 | } |
| 197 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 198 | static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
| 199 | { |
| 200 | u64 in_param; |
| 201 | u64 out_param; |
| 202 | int err; |
| 203 | |
| 204 | if (mlx4_is_mfunc(dev)) { |
| 205 | set_param_l(&in_param, order); |
| 206 | err = mlx4_cmd_imm(dev, in_param, &out_param, RES_MTT, |
| 207 | RES_OP_RESERVE_AND_MAP, |
| 208 | MLX4_CMD_ALLOC_RES, |
| 209 | MLX4_CMD_TIME_CLASS_A, |
| 210 | MLX4_CMD_WRAPPED); |
| 211 | if (err) |
| 212 | return -1; |
| 213 | return get_param_l(&out_param); |
| 214 | } |
| 215 | return __mlx4_alloc_mtt_range(dev, order); |
| 216 | } |
| 217 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 218 | int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, |
| 219 | struct mlx4_mtt *mtt) |
| 220 | { |
| 221 | int i; |
| 222 | |
| 223 | if (!npages) { |
| 224 | mtt->order = -1; |
| 225 | mtt->page_shift = MLX4_ICM_PAGE_SHIFT; |
| 226 | return 0; |
| 227 | } else |
| 228 | mtt->page_shift = page_shift; |
| 229 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 230 | for (mtt->order = 0, i = 1; i < npages; i <<= 1) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 231 | ++mtt->order; |
| 232 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 233 | mtt->offset = mlx4_alloc_mtt_range(dev, mtt->order); |
| 234 | if (mtt->offset == -1) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 235 | return -ENOMEM; |
| 236 | |
| 237 | return 0; |
| 238 | } |
| 239 | EXPORT_SYMBOL_GPL(mlx4_mtt_init); |
| 240 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 241 | void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 242 | { |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 243 | u32 first_seg; |
| 244 | int seg_order; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 245 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 246 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 247 | seg_order = max_t(int, order - log_mtts_per_seg, 0); |
| 248 | first_seg = offset / (1 << log_mtts_per_seg); |
| 249 | |
| 250 | mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, seg_order); |
Marcel Apfelbaum | 1e27ca6 | 2012-01-02 04:07:39 +0000 | [diff] [blame] | 251 | mlx4_table_put_range(dev, &mr_table->mtt_table, offset, |
| 252 | offset + (1 << order) - 1); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 255 | static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 256 | { |
| 257 | u64 in_param; |
| 258 | int err; |
| 259 | |
| 260 | if (mlx4_is_mfunc(dev)) { |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 261 | set_param_l(&in_param, offset); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 262 | set_param_h(&in_param, order); |
| 263 | err = mlx4_cmd(dev, in_param, RES_MTT, RES_OP_RESERVE_AND_MAP, |
| 264 | MLX4_CMD_FREE_RES, |
| 265 | MLX4_CMD_TIME_CLASS_A, |
| 266 | MLX4_CMD_WRAPPED); |
| 267 | if (err) |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 268 | mlx4_warn(dev, "Failed to free mtt range at:" |
| 269 | "%d order:%d\n", offset, order); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 270 | return; |
| 271 | } |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 272 | __mlx4_free_mtt_range(dev, offset, order); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
| 276 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 277 | if (mtt->order < 0) |
| 278 | return; |
| 279 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 280 | mlx4_free_mtt_range(dev, mtt->offset, mtt->order); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 281 | } |
| 282 | EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup); |
| 283 | |
| 284 | u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
| 285 | { |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 286 | return (u64) mtt->offset * dev->caps.mtt_entry_sz; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 287 | } |
| 288 | EXPORT_SYMBOL_GPL(mlx4_mtt_addr); |
| 289 | |
| 290 | static u32 hw_index_to_key(u32 ind) |
| 291 | { |
| 292 | return (ind >> 24) | (ind << 8); |
| 293 | } |
| 294 | |
| 295 | static u32 key_to_hw_index(u32 key) |
| 296 | { |
| 297 | return (key << 24) | (key >> 8); |
| 298 | } |
| 299 | |
| 300 | static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 301 | int mpt_index) |
| 302 | { |
Marcel Apfelbaum | eb41049 | 2012-01-19 09:45:19 +0000 | [diff] [blame] | 303 | return mlx4_cmd(dev, mailbox->dma, mpt_index, |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 304 | 0, MLX4_CMD_SW2HW_MPT, MLX4_CMD_TIME_CLASS_B, |
| 305 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 309 | int mpt_index) |
| 310 | { |
| 311 | return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 312 | !mailbox, MLX4_CMD_HW2SW_MPT, |
| 313 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Yevgeny Petrilin | 66431a7 | 2012-03-06 04:05:02 +0000 | [diff] [blame] | 316 | static int mlx4_mr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, u32 pd, |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 317 | u64 iova, u64 size, u32 access, int npages, |
| 318 | int page_shift, struct mlx4_mr *mr) |
| 319 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 320 | mr->iova = iova; |
| 321 | mr->size = size; |
| 322 | mr->pd = pd; |
| 323 | mr->access = access; |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 324 | mr->enabled = MLX4_MR_DISABLED; |
| 325 | mr->key = hw_index_to_key(mridx); |
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 | return mlx4_mtt_init(dev, npages, page_shift, &mr->mtt); |
| 328 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 329 | |
| 330 | static int mlx4_WRITE_MTT(struct mlx4_dev *dev, |
| 331 | struct mlx4_cmd_mailbox *mailbox, |
| 332 | int num_entries) |
| 333 | { |
| 334 | return mlx4_cmd(dev, mailbox->dma, num_entries, 0, MLX4_CMD_WRITE_MTT, |
| 335 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
| 336 | } |
| 337 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 338 | int __mlx4_mr_reserve(struct mlx4_dev *dev) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 339 | { |
| 340 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 341 | |
| 342 | return mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap); |
| 343 | } |
| 344 | |
| 345 | static int mlx4_mr_reserve(struct mlx4_dev *dev) |
| 346 | { |
| 347 | u64 out_param; |
| 348 | |
| 349 | if (mlx4_is_mfunc(dev)) { |
| 350 | if (mlx4_cmd_imm(dev, 0, &out_param, RES_MPT, RES_OP_RESERVE, |
| 351 | MLX4_CMD_ALLOC_RES, |
| 352 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
| 353 | return -1; |
| 354 | return get_param_l(&out_param); |
| 355 | } |
| 356 | return __mlx4_mr_reserve(dev); |
| 357 | } |
| 358 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 359 | void __mlx4_mr_release(struct mlx4_dev *dev, u32 index) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 360 | { |
| 361 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 362 | |
| 363 | mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index); |
| 364 | } |
| 365 | |
| 366 | static void mlx4_mr_release(struct mlx4_dev *dev, u32 index) |
| 367 | { |
| 368 | u64 in_param; |
| 369 | |
| 370 | if (mlx4_is_mfunc(dev)) { |
| 371 | set_param_l(&in_param, index); |
| 372 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_RESERVE, |
| 373 | MLX4_CMD_FREE_RES, |
| 374 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
| 375 | mlx4_warn(dev, "Failed to release mr index:%d\n", |
| 376 | index); |
| 377 | return; |
| 378 | } |
| 379 | __mlx4_mr_release(dev, index); |
| 380 | } |
| 381 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 382 | int __mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 383 | { |
| 384 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 385 | |
| 386 | return mlx4_table_get(dev, &mr_table->dmpt_table, index); |
| 387 | } |
| 388 | |
| 389 | static int mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index) |
| 390 | { |
| 391 | u64 param; |
| 392 | |
| 393 | if (mlx4_is_mfunc(dev)) { |
| 394 | set_param_l(¶m, index); |
| 395 | return mlx4_cmd_imm(dev, param, ¶m, RES_MPT, RES_OP_MAP_ICM, |
| 396 | MLX4_CMD_ALLOC_RES, |
| 397 | MLX4_CMD_TIME_CLASS_A, |
| 398 | MLX4_CMD_WRAPPED); |
| 399 | } |
| 400 | return __mlx4_mr_alloc_icm(dev, index); |
| 401 | } |
| 402 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 403 | void __mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 404 | { |
| 405 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
| 406 | |
| 407 | mlx4_table_put(dev, &mr_table->dmpt_table, index); |
| 408 | } |
| 409 | |
| 410 | static void mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index) |
| 411 | { |
| 412 | u64 in_param; |
| 413 | |
| 414 | if (mlx4_is_mfunc(dev)) { |
| 415 | set_param_l(&in_param, index); |
| 416 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_MAP_ICM, |
| 417 | MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, |
| 418 | MLX4_CMD_WRAPPED)) |
| 419 | mlx4_warn(dev, "Failed to free icm of mr index:%d\n", |
| 420 | index); |
| 421 | return; |
| 422 | } |
| 423 | return __mlx4_mr_free_icm(dev, index); |
| 424 | } |
| 425 | |
| 426 | int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, |
| 427 | int npages, int page_shift, struct mlx4_mr *mr) |
| 428 | { |
| 429 | u32 index; |
| 430 | int err; |
| 431 | |
| 432 | index = mlx4_mr_reserve(dev); |
| 433 | if (index == -1) |
| 434 | return -ENOMEM; |
| 435 | |
| 436 | err = mlx4_mr_alloc_reserved(dev, index, pd, iova, size, |
| 437 | access, npages, page_shift, mr); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 438 | if (err) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 439 | mlx4_mr_release(dev, index); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 440 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 441 | return err; |
| 442 | } |
| 443 | EXPORT_SYMBOL_GPL(mlx4_mr_alloc); |
| 444 | |
Yevgeny Petrilin | 66431a7 | 2012-03-06 04:05:02 +0000 | [diff] [blame] | 445 | 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] | 446 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 447 | int err; |
| 448 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 449 | if (mr->enabled == MLX4_MR_EN_HW) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 450 | err = mlx4_HW2SW_MPT(dev, NULL, |
| 451 | key_to_hw_index(mr->key) & |
| 452 | (dev->caps.num_mpts - 1)); |
| 453 | if (err) |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 454 | mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 455 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 456 | mr->enabled = MLX4_MR_EN_SW; |
| 457 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 458 | mlx4_mtt_cleanup(dev, &mr->mtt); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 459 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 460 | |
| 461 | void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr) |
| 462 | { |
| 463 | mlx4_mr_free_reserved(dev, mr); |
| 464 | if (mr->enabled) |
| 465 | mlx4_mr_free_icm(dev, key_to_hw_index(mr->key)); |
| 466 | mlx4_mr_release(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 467 | } |
| 468 | EXPORT_SYMBOL_GPL(mlx4_mr_free); |
| 469 | |
| 470 | int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) |
| 471 | { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 472 | struct mlx4_cmd_mailbox *mailbox; |
| 473 | struct mlx4_mpt_entry *mpt_entry; |
| 474 | int err; |
| 475 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 476 | err = mlx4_mr_alloc_icm(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 477 | if (err) |
| 478 | return err; |
| 479 | |
| 480 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 481 | if (IS_ERR(mailbox)) { |
| 482 | err = PTR_ERR(mailbox); |
| 483 | goto err_table; |
| 484 | } |
| 485 | mpt_entry = mailbox->buf; |
| 486 | |
| 487 | memset(mpt_entry, 0, sizeof *mpt_entry); |
| 488 | |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 489 | mpt_entry->flags = cpu_to_be32(MLX4_MPT_FLAG_MIO | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 490 | MLX4_MPT_FLAG_REGION | |
| 491 | mr->access); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 492 | |
| 493 | mpt_entry->key = cpu_to_be32(key_to_hw_index(mr->key)); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 494 | 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] | 495 | mpt_entry->start = cpu_to_be64(mr->iova); |
| 496 | mpt_entry->length = cpu_to_be64(mr->size); |
| 497 | mpt_entry->entity_size = cpu_to_be32(mr->mtt.page_shift); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 498 | |
Jack Morgenstein | b2d9308 | 2007-06-07 23:24:38 -0700 | [diff] [blame] | 499 | if (mr->mtt.order < 0) { |
| 500 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL); |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 501 | mpt_entry->mtt_addr = 0; |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 502 | } else { |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 503 | mpt_entry->mtt_addr = cpu_to_be64(mlx4_mtt_addr(dev, |
| 504 | &mr->mtt)); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) { |
| 508 | /* fast register MR in free state */ |
| 509 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); |
Vladimir Sokolovsky | c925743 | 2008-09-02 13:38:29 -0700 | [diff] [blame] | 510 | mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | |
| 511 | MLX4_MPT_PD_FLAG_RAE); |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 512 | mpt_entry->mtt_sz = cpu_to_be32(1 << mr->mtt.order); |
Roland Dreier | 95d04f0 | 2008-07-23 08:12:26 -0700 | [diff] [blame] | 513 | } else { |
| 514 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); |
| 515 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 516 | |
| 517 | err = mlx4_SW2HW_MPT(dev, mailbox, |
| 518 | key_to_hw_index(mr->key) & (dev->caps.num_mpts - 1)); |
| 519 | if (err) { |
| 520 | mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
| 521 | goto err_cmd; |
| 522 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 523 | mr->enabled = MLX4_MR_EN_HW; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 524 | |
| 525 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 526 | |
| 527 | return 0; |
| 528 | |
| 529 | err_cmd: |
| 530 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 531 | |
| 532 | err_table: |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 533 | mlx4_mr_free_icm(dev, key_to_hw_index(mr->key)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 534 | return err; |
| 535 | } |
| 536 | EXPORT_SYMBOL_GPL(mlx4_mr_enable); |
| 537 | |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 538 | static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 539 | int start_index, int npages, u64 *page_list) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 540 | { |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 541 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 542 | __be64 *mtts; |
| 543 | dma_addr_t dma_handle; |
| 544 | int i; |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 545 | |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 546 | mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->offset + |
| 547 | start_index, &dma_handle); |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 548 | |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 549 | if (!mtts) |
| 550 | return -ENOMEM; |
| 551 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 552 | dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, |
| 553 | npages * sizeof (u64), DMA_TO_DEVICE); |
| 554 | |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 555 | for (i = 0; i < npages; ++i) |
| 556 | mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); |
| 557 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 558 | dma_sync_single_for_device(&dev->pdev->dev, dma_handle, |
| 559 | npages * sizeof (u64), DMA_TO_DEVICE); |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 560 | |
| 561 | return 0; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 562 | } |
| 563 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 564 | int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 565 | int start_index, int npages, u64 *page_list) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 566 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 567 | int err = 0; |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 568 | int chunk; |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 569 | int mtts_per_page; |
| 570 | int max_mtts_first_page; |
| 571 | |
| 572 | /* compute how may mtts fit in the first page */ |
| 573 | mtts_per_page = PAGE_SIZE / sizeof(u64); |
| 574 | max_mtts_first_page = mtts_per_page - (mtt->offset + start_index) |
| 575 | % mtts_per_page; |
| 576 | |
| 577 | chunk = min_t(int, max_mtts_first_page, npages); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 578 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 579 | while (npages > 0) { |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 580 | err = mlx4_write_mtt_chunk(dev, mtt, start_index, chunk, page_list); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 581 | if (err) |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 582 | return err; |
Jack Morgenstein | d7bb58f | 2007-08-01 12:28:53 +0300 | [diff] [blame] | 583 | npages -= chunk; |
| 584 | start_index += chunk; |
| 585 | page_list += chunk; |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 586 | |
| 587 | chunk = min_t(int, mtts_per_page, npages); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 588 | } |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 589 | return err; |
| 590 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 591 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 592 | int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 593 | int start_index, int npages, u64 *page_list) |
| 594 | { |
| 595 | struct mlx4_cmd_mailbox *mailbox = NULL; |
| 596 | __be64 *inbox = NULL; |
| 597 | int chunk; |
| 598 | int err = 0; |
| 599 | int i; |
| 600 | |
| 601 | if (mtt->order < 0) |
| 602 | return -EINVAL; |
| 603 | |
| 604 | if (mlx4_is_mfunc(dev)) { |
| 605 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 606 | if (IS_ERR(mailbox)) |
| 607 | return PTR_ERR(mailbox); |
| 608 | inbox = mailbox->buf; |
| 609 | |
| 610 | while (npages > 0) { |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 611 | chunk = min_t(int, MLX4_MAILBOX_SIZE / sizeof(u64) - 2, |
| 612 | npages); |
| 613 | inbox[0] = cpu_to_be64(mtt->offset + start_index); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 614 | inbox[1] = 0; |
| 615 | for (i = 0; i < chunk; ++i) |
| 616 | inbox[i + 2] = cpu_to_be64(page_list[i] | |
| 617 | MLX4_MTT_FLAG_PRESENT); |
| 618 | err = mlx4_WRITE_MTT(dev, mailbox, chunk); |
| 619 | if (err) { |
| 620 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 621 | return err; |
| 622 | } |
| 623 | |
| 624 | npages -= chunk; |
| 625 | start_index += chunk; |
| 626 | page_list += chunk; |
| 627 | } |
| 628 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 629 | return err; |
| 630 | } |
| 631 | |
| 632 | return __mlx4_write_mtt(dev, mtt, start_index, npages, page_list); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 633 | } |
| 634 | EXPORT_SYMBOL_GPL(mlx4_write_mtt); |
| 635 | |
| 636 | int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
| 637 | struct mlx4_buf *buf) |
| 638 | { |
| 639 | u64 *page_list; |
| 640 | int err; |
| 641 | int i; |
| 642 | |
| 643 | page_list = kmalloc(buf->npages * sizeof *page_list, GFP_KERNEL); |
| 644 | if (!page_list) |
| 645 | return -ENOMEM; |
| 646 | |
| 647 | for (i = 0; i < buf->npages; ++i) |
| 648 | if (buf->nbufs == 1) |
Roland Dreier | b57aacf | 2008-02-06 21:17:59 -0800 | [diff] [blame] | 649 | page_list[i] = buf->direct.map + (i << buf->page_shift); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 650 | else |
Roland Dreier | b57aacf | 2008-02-06 21:17:59 -0800 | [diff] [blame] | 651 | page_list[i] = buf->page_list[i].map; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 652 | |
| 653 | err = mlx4_write_mtt(dev, mtt, 0, buf->npages, page_list); |
| 654 | |
| 655 | kfree(page_list); |
| 656 | return err; |
| 657 | } |
| 658 | EXPORT_SYMBOL_GPL(mlx4_buf_write_mtt); |
| 659 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 660 | int mlx4_init_mr_table(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 661 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 662 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 663 | struct mlx4_mr_table *mr_table = &priv->mr_table; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 664 | int err; |
| 665 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 666 | if (!is_power_of_2(dev->caps.num_mpts)) |
| 667 | return -EINVAL; |
| 668 | |
| 669 | /* Nothing to do for slaves - all MR handling is forwarded |
| 670 | * to the master */ |
| 671 | if (mlx4_is_slave(dev)) |
| 672 | return 0; |
| 673 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 674 | err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts, |
Yevgeny Petrilin | 93fc9e1 | 2008-10-22 10:25:29 -0700 | [diff] [blame] | 675 | ~0, dev->caps.reserved_mrws, 0); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 676 | if (err) |
| 677 | return err; |
| 678 | |
| 679 | err = mlx4_buddy_init(&mr_table->mtt_buddy, |
Yishai Hadas | 3de819e | 2012-08-13 08:15:07 +0000 | [diff] [blame] | 680 | ilog2((u32)dev->caps.num_mtts / |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 681 | (1 << log_mtts_per_seg))); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 682 | if (err) |
| 683 | goto err_buddy; |
| 684 | |
| 685 | if (dev->caps.reserved_mtts) { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 686 | priv->reserved_mtts = |
| 687 | mlx4_alloc_mtt_range(dev, |
| 688 | fls(dev->caps.reserved_mtts - 1)); |
| 689 | if (priv->reserved_mtts < 0) { |
Yishai Hadas | 3de819e | 2012-08-13 08:15:07 +0000 | [diff] [blame] | 690 | mlx4_warn(dev, "MTT table of order %u is too small.\n", |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 691 | mr_table->mtt_buddy.max_order); |
| 692 | err = -ENOMEM; |
| 693 | goto err_reserve_mtts; |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | return 0; |
| 698 | |
| 699 | err_reserve_mtts: |
| 700 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
| 701 | |
| 702 | err_buddy: |
| 703 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
| 704 | |
| 705 | return err; |
| 706 | } |
| 707 | |
| 708 | void mlx4_cleanup_mr_table(struct mlx4_dev *dev) |
| 709 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 710 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 711 | struct mlx4_mr_table *mr_table = &priv->mr_table; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 712 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 713 | if (mlx4_is_slave(dev)) |
| 714 | return; |
| 715 | if (priv->reserved_mtts >= 0) |
| 716 | mlx4_free_mtt_range(dev, priv->reserved_mtts, |
| 717 | fls(dev->caps.reserved_mtts - 1)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 718 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
| 719 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
| 720 | } |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 721 | |
| 722 | static inline int mlx4_check_fmr(struct mlx4_fmr *fmr, u64 *page_list, |
| 723 | int npages, u64 iova) |
| 724 | { |
| 725 | int i, page_mask; |
| 726 | |
| 727 | if (npages > fmr->max_pages) |
| 728 | return -EINVAL; |
| 729 | |
| 730 | page_mask = (1 << fmr->page_shift) - 1; |
| 731 | |
| 732 | /* We are getting page lists, so va must be page aligned. */ |
| 733 | if (iova & page_mask) |
| 734 | return -EINVAL; |
| 735 | |
| 736 | /* Trust the user not to pass misaligned data in page_list */ |
| 737 | if (0) |
| 738 | for (i = 0; i < npages; ++i) { |
| 739 | if (page_list[i] & ~page_mask) |
| 740 | return -EINVAL; |
| 741 | } |
| 742 | |
| 743 | if (fmr->maps >= fmr->max_maps) |
| 744 | return -EINVAL; |
| 745 | |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list, |
| 750 | int npages, u64 iova, u32 *lkey, u32 *rkey) |
| 751 | { |
| 752 | u32 key; |
| 753 | int i, err; |
| 754 | |
| 755 | err = mlx4_check_fmr(fmr, page_list, npages, iova); |
| 756 | if (err) |
| 757 | return err; |
| 758 | |
| 759 | ++fmr->maps; |
| 760 | |
| 761 | key = key_to_hw_index(fmr->mr.key); |
| 762 | key += dev->caps.num_mpts; |
| 763 | *lkey = *rkey = fmr->mr.key = hw_index_to_key(key); |
| 764 | |
| 765 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_SW; |
| 766 | |
| 767 | /* Make sure MPT status is visible before writing MTT entries */ |
| 768 | wmb(); |
| 769 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 770 | dma_sync_single_for_cpu(&dev->pdev->dev, fmr->dma_handle, |
| 771 | npages * sizeof(u64), DMA_TO_DEVICE); |
| 772 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 773 | for (i = 0; i < npages; ++i) |
| 774 | fmr->mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); |
| 775 | |
Roland Dreier | e727f5c | 2009-06-22 23:07:56 -0700 | [diff] [blame] | 776 | dma_sync_single_for_device(&dev->pdev->dev, fmr->dma_handle, |
| 777 | npages * sizeof(u64), DMA_TO_DEVICE); |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 778 | |
| 779 | fmr->mpt->key = cpu_to_be32(key); |
| 780 | fmr->mpt->lkey = cpu_to_be32(key); |
| 781 | fmr->mpt->length = cpu_to_be64(npages * (1ull << fmr->page_shift)); |
| 782 | fmr->mpt->start = cpu_to_be64(iova); |
| 783 | |
| 784 | /* Make MTT entries are visible before setting MPT status */ |
| 785 | wmb(); |
| 786 | |
| 787 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_HW; |
| 788 | |
| 789 | /* Make sure MPT status is visible before consumer can use FMR */ |
| 790 | wmb(); |
| 791 | |
| 792 | return 0; |
| 793 | } |
| 794 | EXPORT_SYMBOL_GPL(mlx4_map_phys_fmr); |
| 795 | |
| 796 | int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages, |
| 797 | int max_maps, u8 page_shift, struct mlx4_fmr *fmr) |
| 798 | { |
| 799 | struct mlx4_priv *priv = mlx4_priv(dev); |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 800 | int err = -ENOMEM; |
| 801 | |
Eli Cohen | a5bbe89 | 2012-02-09 18:10:06 +0200 | [diff] [blame] | 802 | if (max_maps > dev->caps.max_fmr_maps) |
| 803 | return -EINVAL; |
| 804 | |
Oren Duer | c5057dd | 2008-05-05 15:56:52 -0700 | [diff] [blame] | 805 | 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] | 806 | return -EINVAL; |
| 807 | |
| 808 | /* All MTTs must fit in the same page */ |
| 809 | if (max_pages * sizeof *fmr->mtts > PAGE_SIZE) |
| 810 | return -EINVAL; |
| 811 | |
| 812 | fmr->page_shift = page_shift; |
| 813 | fmr->max_pages = max_pages; |
| 814 | fmr->max_maps = max_maps; |
| 815 | fmr->maps = 0; |
| 816 | |
| 817 | err = mlx4_mr_alloc(dev, pd, 0, 0, access, max_pages, |
| 818 | page_shift, &fmr->mr); |
| 819 | if (err) |
| 820 | return err; |
| 821 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 822 | fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table, |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 823 | fmr->mr.mtt.offset, |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 824 | &fmr->dma_handle); |
Marcel Apfelbaum | 2b8fb28 | 2011-12-13 04:16:56 +0000 | [diff] [blame] | 825 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 826 | if (!fmr->mtts) { |
| 827 | err = -ENOMEM; |
| 828 | goto err_free; |
| 829 | } |
| 830 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 831 | return 0; |
| 832 | |
| 833 | err_free: |
| 834 | mlx4_mr_free(dev, &fmr->mr); |
| 835 | return err; |
| 836 | } |
| 837 | EXPORT_SYMBOL_GPL(mlx4_fmr_alloc); |
| 838 | |
| 839 | int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr) |
| 840 | { |
Jack Morgenstein | 11e75a7 | 2008-02-14 13:41:29 +0200 | [diff] [blame] | 841 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 842 | int err; |
| 843 | |
| 844 | err = mlx4_mr_enable(dev, &fmr->mr); |
| 845 | if (err) |
| 846 | return err; |
| 847 | |
| 848 | fmr->mpt = mlx4_table_find(&priv->mr_table.dmpt_table, |
| 849 | key_to_hw_index(fmr->mr.key), NULL); |
| 850 | if (!fmr->mpt) |
| 851 | return -ENOMEM; |
| 852 | |
| 853 | return 0; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 854 | } |
| 855 | EXPORT_SYMBOL_GPL(mlx4_fmr_enable); |
| 856 | |
| 857 | void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr, |
| 858 | u32 *lkey, u32 *rkey) |
| 859 | { |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 860 | struct mlx4_cmd_mailbox *mailbox; |
| 861 | int err; |
| 862 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 863 | if (!fmr->maps) |
| 864 | return; |
| 865 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 866 | fmr->maps = 0; |
| 867 | |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 868 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 869 | if (IS_ERR(mailbox)) { |
| 870 | err = PTR_ERR(mailbox); |
| 871 | printk(KERN_WARNING "mlx4_ib: mlx4_alloc_cmd_mailbox" |
| 872 | " failed (%d)\n", err); |
| 873 | return; |
| 874 | } |
| 875 | |
| 876 | err = mlx4_HW2SW_MPT(dev, NULL, |
| 877 | key_to_hw_index(fmr->mr.key) & |
| 878 | (dev->caps.num_mpts - 1)); |
| 879 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 880 | if (err) { |
| 881 | printk(KERN_WARNING "mlx4_ib: mlx4_HW2SW_MPT failed (%d)\n", |
| 882 | err); |
| 883 | return; |
| 884 | } |
| 885 | fmr->mr.enabled = MLX4_MR_EN_SW; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 886 | } |
| 887 | EXPORT_SYMBOL_GPL(mlx4_fmr_unmap); |
| 888 | |
| 889 | int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr) |
| 890 | { |
| 891 | if (fmr->maps) |
| 892 | return -EBUSY; |
| 893 | |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 894 | mlx4_mr_free(dev, &fmr->mr); |
Jack Morgenstein | ea51b37 | 2011-12-13 04:13:48 +0000 | [diff] [blame] | 895 | fmr->mr.enabled = MLX4_MR_DISABLED; |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 896 | |
| 897 | return 0; |
| 898 | } |
| 899 | EXPORT_SYMBOL_GPL(mlx4_fmr_free); |
| 900 | |
| 901 | int mlx4_SYNC_TPT(struct mlx4_dev *dev) |
| 902 | { |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 903 | return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, 1000, |
Jack Morgenstein | 5e92d80 | 2012-05-15 10:34:59 +0000 | [diff] [blame] | 904 | MLX4_CMD_NATIVE); |
Jack Morgenstein | 8ad11fb | 2007-08-01 12:29:05 +0300 | [diff] [blame] | 905 | } |
| 906 | EXPORT_SYMBOL_GPL(mlx4_SYNC_TPT); |