Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. |
Jack Morgenstein | 51a379d | 2008-07-25 10:32:52 -0700 | [diff] [blame] | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the |
| 9 | * OpenIB.org BSD license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 19 | * - Redistributions in binary form must reproduce the above |
| 20 | * copyright notice, this list of conditions and the following |
| 21 | * disclaimer in the documentation and/or other materials |
| 22 | * provided with the distribution. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 31 | * SOFTWARE. |
| 32 | */ |
| 33 | |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 34 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 35 | #include <linux/mlx4/cmd.h> |
Or Gerlitz | fe66bb2 | 2013-10-15 16:55:21 +0200 | [diff] [blame] | 36 | #include <linux/mlx4/srq.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/gfp.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 39 | |
| 40 | #include "mlx4.h" |
| 41 | #include "icm.h" |
| 42 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 43 | void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type) |
| 44 | { |
| 45 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 46 | struct mlx4_srq *srq; |
| 47 | |
| 48 | spin_lock(&srq_table->lock); |
| 49 | |
| 50 | srq = radix_tree_lookup(&srq_table->tree, srqn & (dev->caps.num_srqs - 1)); |
| 51 | if (srq) |
| 52 | atomic_inc(&srq->refcount); |
| 53 | |
| 54 | spin_unlock(&srq_table->lock); |
| 55 | |
| 56 | if (!srq) { |
| 57 | mlx4_warn(dev, "Async event for bogus SRQ %08x\n", srqn); |
| 58 | return; |
| 59 | } |
| 60 | |
| 61 | srq->event(srq, event_type); |
| 62 | |
| 63 | if (atomic_dec_and_test(&srq->refcount)) |
| 64 | complete(&srq->free); |
| 65 | } |
| 66 | |
| 67 | static int mlx4_SW2HW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 68 | int srq_num) |
| 69 | { |
Marcel Apfelbaum | eb41049 | 2012-01-19 09:45:19 +0000 | [diff] [blame] | 70 | return mlx4_cmd(dev, mailbox->dma, srq_num, 0, |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 71 | MLX4_CMD_SW2HW_SRQ, MLX4_CMD_TIME_CLASS_A, |
| 72 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | static int mlx4_HW2SW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 76 | int srq_num) |
| 77 | { |
| 78 | return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, srq_num, |
| 79 | mailbox ? 0 : 1, MLX4_CMD_HW2SW_SRQ, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 80 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | static int mlx4_ARM_SRQ(struct mlx4_dev *dev, int srq_num, int limit_watermark) |
| 84 | { |
| 85 | return mlx4_cmd(dev, limit_watermark, srq_num, 0, MLX4_CMD_ARM_SRQ, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 86 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 87 | } |
| 88 | |
Jack Morgenstein | 65541cb | 2007-06-21 13:03:11 +0300 | [diff] [blame] | 89 | static int mlx4_QUERY_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 90 | int srq_num) |
| 91 | { |
| 92 | return mlx4_cmd_box(dev, 0, mailbox->dma, srq_num, 0, MLX4_CMD_QUERY_SRQ, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 93 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
Jack Morgenstein | 65541cb | 2007-06-21 13:03:11 +0300 | [diff] [blame] | 94 | } |
| 95 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 96 | int __mlx4_srq_alloc_icm(struct mlx4_dev *dev, int *srqn) |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 97 | { |
| 98 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 99 | int err; |
| 100 | |
| 101 | |
| 102 | *srqn = mlx4_bitmap_alloc(&srq_table->bitmap); |
| 103 | if (*srqn == -1) |
| 104 | return -ENOMEM; |
| 105 | |
Jiri Kosina | 40f2287 | 2014-05-11 15:15:12 +0300 | [diff] [blame] | 106 | err = mlx4_table_get(dev, &srq_table->table, *srqn, GFP_KERNEL); |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 107 | if (err) |
| 108 | goto err_out; |
| 109 | |
Jiri Kosina | 40f2287 | 2014-05-11 15:15:12 +0300 | [diff] [blame] | 110 | err = mlx4_table_get(dev, &srq_table->cmpt_table, *srqn, GFP_KERNEL); |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 111 | if (err) |
| 112 | goto err_put; |
| 113 | return 0; |
| 114 | |
| 115 | err_put: |
| 116 | mlx4_table_put(dev, &srq_table->table, *srqn); |
| 117 | |
| 118 | err_out: |
Jack Morgenstein | 7c6d74d | 2013-12-08 16:50:17 +0200 | [diff] [blame] | 119 | mlx4_bitmap_free(&srq_table->bitmap, *srqn, MLX4_NO_RR); |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 120 | return err; |
| 121 | } |
| 122 | |
| 123 | static int mlx4_srq_alloc_icm(struct mlx4_dev *dev, int *srqn) |
| 124 | { |
| 125 | u64 out_param; |
| 126 | int err; |
| 127 | |
| 128 | if (mlx4_is_mfunc(dev)) { |
| 129 | err = mlx4_cmd_imm(dev, 0, &out_param, RES_SRQ, |
| 130 | RES_OP_RESERVE_AND_MAP, |
| 131 | MLX4_CMD_ALLOC_RES, |
| 132 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
| 133 | if (!err) |
| 134 | *srqn = get_param_l(&out_param); |
| 135 | |
| 136 | return err; |
| 137 | } |
| 138 | return __mlx4_srq_alloc_icm(dev, srqn); |
| 139 | } |
| 140 | |
Eli Cohen | c82e9aa | 2011-12-13 04:15:24 +0000 | [diff] [blame] | 141 | void __mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 142 | { |
| 143 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 144 | |
| 145 | mlx4_table_put(dev, &srq_table->cmpt_table, srqn); |
| 146 | mlx4_table_put(dev, &srq_table->table, srqn); |
Jack Morgenstein | 7c6d74d | 2013-12-08 16:50:17 +0200 | [diff] [blame] | 147 | mlx4_bitmap_free(&srq_table->bitmap, srqn, MLX4_NO_RR); |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | static void mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) |
| 151 | { |
Jack Morgenstein | e7dbeba | 2013-03-07 03:46:54 +0000 | [diff] [blame] | 152 | u64 in_param = 0; |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 153 | |
| 154 | if (mlx4_is_mfunc(dev)) { |
| 155 | set_param_l(&in_param, srqn); |
| 156 | if (mlx4_cmd(dev, in_param, RES_SRQ, RES_OP_RESERVE_AND_MAP, |
| 157 | MLX4_CMD_FREE_RES, |
| 158 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
| 159 | mlx4_warn(dev, "Failed freeing cq:%d\n", srqn); |
| 160 | return; |
| 161 | } |
| 162 | __mlx4_srq_free_icm(dev, srqn); |
| 163 | } |
| 164 | |
Sean Hefty | 18abd5e | 2011-06-02 10:43:26 -0700 | [diff] [blame] | 165 | int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, u32 cqn, u16 xrcd, |
| 166 | struct mlx4_mtt *mtt, u64 db_rec, struct mlx4_srq *srq) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 167 | { |
| 168 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 169 | struct mlx4_cmd_mailbox *mailbox; |
| 170 | struct mlx4_srq_context *srq_context; |
| 171 | u64 mtt_addr; |
| 172 | int err; |
| 173 | |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 174 | err = mlx4_srq_alloc_icm(dev, &srq->srqn); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 175 | if (err) |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 176 | return err; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 177 | |
| 178 | spin_lock_irq(&srq_table->lock); |
| 179 | err = radix_tree_insert(&srq_table->tree, srq->srqn, srq); |
| 180 | spin_unlock_irq(&srq_table->lock); |
| 181 | if (err) |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 182 | goto err_icm; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 183 | |
| 184 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 185 | if (IS_ERR(mailbox)) { |
| 186 | err = PTR_ERR(mailbox); |
| 187 | goto err_radix; |
| 188 | } |
| 189 | |
| 190 | srq_context = mailbox->buf; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 191 | srq_context->state_logsize_srqn = cpu_to_be32((ilog2(srq->max) << 24) | |
| 192 | srq->srqn); |
| 193 | srq_context->logstride = srq->wqe_shift - 4; |
Sean Hefty | 18abd5e | 2011-06-02 10:43:26 -0700 | [diff] [blame] | 194 | srq_context->xrcd = cpu_to_be16(xrcd); |
| 195 | srq_context->pg_offset_cqn = cpu_to_be32(cqn & 0xffffff); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 196 | srq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; |
| 197 | |
| 198 | mtt_addr = mlx4_mtt_addr(dev, mtt); |
| 199 | srq_context->mtt_base_addr_h = mtt_addr >> 32; |
| 200 | srq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); |
| 201 | srq_context->pd = cpu_to_be32(pdn); |
| 202 | srq_context->db_rec_addr = cpu_to_be64(db_rec); |
| 203 | |
| 204 | err = mlx4_SW2HW_SRQ(dev, mailbox, srq->srqn); |
| 205 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 206 | if (err) |
| 207 | goto err_radix; |
| 208 | |
| 209 | atomic_set(&srq->refcount, 1); |
| 210 | init_completion(&srq->free); |
| 211 | |
| 212 | return 0; |
| 213 | |
| 214 | err_radix: |
| 215 | spin_lock_irq(&srq_table->lock); |
| 216 | radix_tree_delete(&srq_table->tree, srq->srqn); |
| 217 | spin_unlock_irq(&srq_table->lock); |
| 218 | |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 219 | err_icm: |
| 220 | mlx4_srq_free_icm(dev, srq->srqn); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 221 | return err; |
| 222 | } |
| 223 | EXPORT_SYMBOL_GPL(mlx4_srq_alloc); |
| 224 | |
| 225 | void mlx4_srq_free(struct mlx4_dev *dev, struct mlx4_srq *srq) |
| 226 | { |
| 227 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 228 | int err; |
| 229 | |
| 230 | err = mlx4_HW2SW_SRQ(dev, NULL, srq->srqn); |
| 231 | if (err) |
| 232 | mlx4_warn(dev, "HW2SW_SRQ failed (%d) for SRQN %06x\n", err, srq->srqn); |
| 233 | |
| 234 | spin_lock_irq(&srq_table->lock); |
| 235 | radix_tree_delete(&srq_table->tree, srq->srqn); |
| 236 | spin_unlock_irq(&srq_table->lock); |
| 237 | |
| 238 | if (atomic_dec_and_test(&srq->refcount)) |
| 239 | complete(&srq->free); |
| 240 | wait_for_completion(&srq->free); |
| 241 | |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 242 | mlx4_srq_free_icm(dev, srq->srqn); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 243 | } |
| 244 | EXPORT_SYMBOL_GPL(mlx4_srq_free); |
| 245 | |
| 246 | int mlx4_srq_arm(struct mlx4_dev *dev, struct mlx4_srq *srq, int limit_watermark) |
| 247 | { |
| 248 | return mlx4_ARM_SRQ(dev, srq->srqn, limit_watermark); |
| 249 | } |
| 250 | EXPORT_SYMBOL_GPL(mlx4_srq_arm); |
| 251 | |
Jack Morgenstein | 65541cb | 2007-06-21 13:03:11 +0300 | [diff] [blame] | 252 | int mlx4_srq_query(struct mlx4_dev *dev, struct mlx4_srq *srq, int *limit_watermark) |
| 253 | { |
| 254 | struct mlx4_cmd_mailbox *mailbox; |
| 255 | struct mlx4_srq_context *srq_context; |
| 256 | int err; |
| 257 | |
| 258 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 259 | if (IS_ERR(mailbox)) |
| 260 | return PTR_ERR(mailbox); |
| 261 | |
| 262 | srq_context = mailbox->buf; |
| 263 | |
| 264 | err = mlx4_QUERY_SRQ(dev, mailbox, srq->srqn); |
| 265 | if (err) |
| 266 | goto err_out; |
Roland Dreier | d7dc3cc | 2007-10-09 19:59:06 -0700 | [diff] [blame] | 267 | *limit_watermark = be16_to_cpu(srq_context->limit_watermark); |
Jack Morgenstein | 65541cb | 2007-06-21 13:03:11 +0300 | [diff] [blame] | 268 | |
| 269 | err_out: |
| 270 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 271 | return err; |
| 272 | } |
| 273 | EXPORT_SYMBOL_GPL(mlx4_srq_query); |
| 274 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 275 | int mlx4_init_srq_table(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 276 | { |
| 277 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 278 | int err; |
| 279 | |
| 280 | spin_lock_init(&srq_table->lock); |
| 281 | INIT_RADIX_TREE(&srq_table->tree, GFP_ATOMIC); |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 282 | if (mlx4_is_slave(dev)) |
| 283 | return 0; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 284 | |
| 285 | err = mlx4_bitmap_init(&srq_table->bitmap, dev->caps.num_srqs, |
Yevgeny Petrilin | 93fc9e1 | 2008-10-22 10:25:29 -0700 | [diff] [blame] | 286 | dev->caps.num_srqs - 1, dev->caps.reserved_srqs, 0); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 287 | if (err) |
| 288 | return err; |
| 289 | |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | void mlx4_cleanup_srq_table(struct mlx4_dev *dev) |
| 294 | { |
Jack Morgenstein | 3ec65b2 | 2011-12-13 04:13:05 +0000 | [diff] [blame] | 295 | if (mlx4_is_slave(dev)) |
| 296 | return; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 297 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->srq_table.bitmap); |
| 298 | } |
Shlomo Pongratz | 9f55055 | 2013-04-10 14:26:47 +0000 | [diff] [blame] | 299 | |
| 300 | struct mlx4_srq *mlx4_srq_lookup(struct mlx4_dev *dev, u32 srqn) |
| 301 | { |
| 302 | struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
| 303 | struct mlx4_srq *srq; |
| 304 | unsigned long flags; |
| 305 | |
| 306 | spin_lock_irqsave(&srq_table->lock, flags); |
| 307 | srq = radix_tree_lookup(&srq_table->tree, |
| 308 | srqn & (dev->caps.num_srqs - 1)); |
| 309 | spin_unlock_irqrestore(&srq_table->lock, flags); |
| 310 | |
| 311 | return srq; |
| 312 | } |
| 313 | EXPORT_SYMBOL_GPL(mlx4_srq_lookup); |