Commit | Line | Data |
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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. | |
51a379d0 | 4 | * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
5 | * Copyright (c) 2004 Voltaire, Inc. All rights reserved. |
6 | * | |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
34 | */ | |
35 | ||
5a0e3ad6 | 36 | #include <linux/gfp.h> |
ee40fa06 | 37 | #include <linux/export.h> |
fe9a2603 | 38 | |
225c7b1f RD |
39 | #include <linux/mlx4/cmd.h> |
40 | #include <linux/mlx4/qp.h> | |
41 | ||
42 | #include "mlx4.h" | |
43 | #include "icm.h" | |
44 | ||
ddae0349 EE |
45 | /* QP to support BF should have bits 6,7 cleared */ |
46 | #define MLX4_BF_QP_SKIP_MASK 0xc0 | |
47 | #define MLX4_MAX_BF_QP_RANGE 0x40 | |
48 | ||
225c7b1f RD |
49 | void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type) |
50 | { | |
51 | struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; | |
52 | struct mlx4_qp *qp; | |
53 | ||
54 | spin_lock(&qp_table->lock); | |
55 | ||
56 | qp = __mlx4_qp_lookup(dev, qpn); | |
57 | if (qp) | |
58 | atomic_inc(&qp->refcount); | |
59 | ||
60 | spin_unlock(&qp_table->lock); | |
61 | ||
62 | if (!qp) { | |
fe9a2603 | 63 | mlx4_dbg(dev, "Async event for none existent QP %08x\n", qpn); |
225c7b1f RD |
64 | return; |
65 | } | |
66 | ||
67 | qp->event(qp, event_type); | |
68 | ||
69 | if (atomic_dec_and_test(&qp->refcount)) | |
70 | complete(&qp->free); | |
71 | } | |
72 | ||
980e9001 | 73 | /* used for INIT/CLOSE port logic */ |
47605df9 | 74 | static int is_master_qp0(struct mlx4_dev *dev, struct mlx4_qp *qp, int *real_qp0, int *proxy_qp0) |
fe9a2603 | 75 | { |
47605df9 | 76 | /* this procedure is called after we already know we are on the master */ |
980e9001 | 77 | /* qp0 is either the proxy qp0, or the real qp0 */ |
47605df9 JM |
78 | u32 pf_proxy_offset = dev->phys_caps.base_proxy_sqpn + 8 * mlx4_master_func_num(dev); |
79 | *proxy_qp0 = qp->qpn >= pf_proxy_offset && qp->qpn <= pf_proxy_offset + 1; | |
980e9001 | 80 | |
47605df9 JM |
81 | *real_qp0 = qp->qpn >= dev->phys_caps.base_sqpn && |
82 | qp->qpn <= dev->phys_caps.base_sqpn + 1; | |
980e9001 JM |
83 | |
84 | return *real_qp0 || *proxy_qp0; | |
fe9a2603 JM |
85 | } |
86 | ||
87 | static int __mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, | |
88 | enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, | |
89 | struct mlx4_qp_context *context, | |
90 | enum mlx4_qp_optpar optpar, | |
91 | int sqd_event, struct mlx4_qp *qp, int native) | |
225c7b1f RD |
92 | { |
93 | static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = { | |
94 | [MLX4_QP_STATE_RST] = { | |
95 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
96 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
97 | [MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP, | |
98 | }, | |
99 | [MLX4_QP_STATE_INIT] = { | |
100 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
101 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
102 | [MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP, | |
103 | [MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP, | |
104 | }, | |
105 | [MLX4_QP_STATE_RTR] = { | |
106 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
107 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
108 | [MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP, | |
109 | }, | |
110 | [MLX4_QP_STATE_RTS] = { | |
111 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
112 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
113 | [MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP, | |
114 | [MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP, | |
115 | }, | |
116 | [MLX4_QP_STATE_SQD] = { | |
117 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
118 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
119 | [MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP, | |
120 | [MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP, | |
121 | }, | |
122 | [MLX4_QP_STATE_SQER] = { | |
123 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
124 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
125 | [MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP, | |
126 | }, | |
127 | [MLX4_QP_STATE_ERR] = { | |
128 | [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP, | |
129 | [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP, | |
130 | } | |
131 | }; | |
132 | ||
fe9a2603 | 133 | struct mlx4_priv *priv = mlx4_priv(dev); |
225c7b1f RD |
134 | struct mlx4_cmd_mailbox *mailbox; |
135 | int ret = 0; | |
980e9001 JM |
136 | int real_qp0 = 0; |
137 | int proxy_qp0 = 0; | |
fe9a2603 | 138 | u8 port; |
225c7b1f | 139 | |
9ed87fd3 | 140 | if (cur_state >= MLX4_QP_NUM_STATE || new_state >= MLX4_QP_NUM_STATE || |
225c7b1f RD |
141 | !op[cur_state][new_state]) |
142 | return -EINVAL; | |
143 | ||
fe9a2603 JM |
144 | if (op[cur_state][new_state] == MLX4_CMD_2RST_QP) { |
145 | ret = mlx4_cmd(dev, 0, qp->qpn, 2, | |
146 | MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A, native); | |
147 | if (mlx4_is_master(dev) && cur_state != MLX4_QP_STATE_ERR && | |
148 | cur_state != MLX4_QP_STATE_RST && | |
47605df9 | 149 | is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) { |
fe9a2603 | 150 | port = (qp->qpn & 1) + 1; |
980e9001 JM |
151 | if (proxy_qp0) |
152 | priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0; | |
153 | else | |
154 | priv->mfunc.master.qp0_state[port].qp0_active = 0; | |
fe9a2603 JM |
155 | } |
156 | return ret; | |
157 | } | |
225c7b1f RD |
158 | |
159 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
160 | if (IS_ERR(mailbox)) | |
161 | return PTR_ERR(mailbox); | |
162 | ||
163 | if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) { | |
164 | u64 mtt_addr = mlx4_mtt_addr(dev, mtt); | |
165 | context->mtt_base_addr_h = mtt_addr >> 32; | |
166 | context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); | |
167 | context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; | |
168 | } | |
169 | ||
170 | *(__be32 *) mailbox->buf = cpu_to_be32(optpar); | |
171 | memcpy(mailbox->buf + 8, context, sizeof *context); | |
172 | ||
173 | ((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn = | |
174 | cpu_to_be32(qp->qpn); | |
175 | ||
eb41049f | 176 | ret = mlx4_cmd(dev, mailbox->dma, |
fe9a2603 | 177 | qp->qpn | (!!sqd_event << 31), |
225c7b1f | 178 | new_state == MLX4_QP_STATE_RST ? 2 : 0, |
fe9a2603 | 179 | op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C, native); |
225c7b1f | 180 | |
47605df9 | 181 | if (mlx4_is_master(dev) && is_master_qp0(dev, qp, &real_qp0, &proxy_qp0)) { |
980e9001 JM |
182 | port = (qp->qpn & 1) + 1; |
183 | if (cur_state != MLX4_QP_STATE_ERR && | |
184 | cur_state != MLX4_QP_STATE_RST && | |
185 | new_state == MLX4_QP_STATE_ERR) { | |
186 | if (proxy_qp0) | |
187 | priv->mfunc.master.qp0_state[port].proxy_qp0_active = 0; | |
188 | else | |
189 | priv->mfunc.master.qp0_state[port].qp0_active = 0; | |
190 | } else if (new_state == MLX4_QP_STATE_RTR) { | |
191 | if (proxy_qp0) | |
192 | priv->mfunc.master.qp0_state[port].proxy_qp0_active = 1; | |
193 | else | |
194 | priv->mfunc.master.qp0_state[port].qp0_active = 1; | |
195 | } | |
196 | } | |
197 | ||
225c7b1f RD |
198 | mlx4_free_cmd_mailbox(dev, mailbox); |
199 | return ret; | |
200 | } | |
fe9a2603 JM |
201 | |
202 | int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, | |
203 | enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state, | |
204 | struct mlx4_qp_context *context, | |
205 | enum mlx4_qp_optpar optpar, | |
206 | int sqd_event, struct mlx4_qp *qp) | |
207 | { | |
208 | return __mlx4_qp_modify(dev, mtt, cur_state, new_state, context, | |
209 | optpar, sqd_event, qp, 0); | |
210 | } | |
225c7b1f RD |
211 | EXPORT_SYMBOL_GPL(mlx4_qp_modify); |
212 | ||
c82e9aa0 | 213 | int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, |
ddae0349 | 214 | int *base, u8 flags) |
a3cdcbfa | 215 | { |
d57febe1 | 216 | u32 uid; |
ddae0349 EE |
217 | int bf_qp = !!(flags & (u8)MLX4_RESERVE_ETH_BF_QP); |
218 | ||
a3cdcbfa YP |
219 | struct mlx4_priv *priv = mlx4_priv(dev); |
220 | struct mlx4_qp_table *qp_table = &priv->qp_table; | |
a3cdcbfa | 221 | |
ddae0349 EE |
222 | if (cnt > MLX4_MAX_BF_QP_RANGE && bf_qp) |
223 | return -ENOMEM; | |
224 | ||
d57febe1 MB |
225 | uid = MLX4_QP_TABLE_ZONE_GENERAL; |
226 | if (flags & (u8)MLX4_RESERVE_A0_QP) { | |
227 | if (bf_qp) | |
228 | uid = MLX4_QP_TABLE_ZONE_RAW_ETH; | |
229 | else | |
230 | uid = MLX4_QP_TABLE_ZONE_RSS; | |
231 | } | |
232 | ||
233 | *base = mlx4_zone_alloc_entries(qp_table->zones, uid, cnt, align, | |
234 | bf_qp ? MLX4_BF_QP_SKIP_MASK : 0, NULL); | |
fe9a2603 | 235 | if (*base == -1) |
a3cdcbfa YP |
236 | return -ENOMEM; |
237 | ||
a3cdcbfa YP |
238 | return 0; |
239 | } | |
fe9a2603 | 240 | |
ddae0349 EE |
241 | int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, |
242 | int *base, u8 flags) | |
fe9a2603 | 243 | { |
e7dbeba8 | 244 | u64 in_param = 0; |
fe9a2603 JM |
245 | u64 out_param; |
246 | int err; | |
247 | ||
ddae0349 EE |
248 | /* Turn off all unsupported QP allocation flags */ |
249 | flags &= dev->caps.alloc_res_qp_mask; | |
250 | ||
fe9a2603 | 251 | if (mlx4_is_mfunc(dev)) { |
ddae0349 | 252 | set_param_l(&in_param, (((u32)flags) << 24) | (u32)cnt); |
fe9a2603 JM |
253 | set_param_h(&in_param, align); |
254 | err = mlx4_cmd_imm(dev, in_param, &out_param, | |
255 | RES_QP, RES_OP_RESERVE, | |
256 | MLX4_CMD_ALLOC_RES, | |
257 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); | |
258 | if (err) | |
259 | return err; | |
260 | ||
261 | *base = get_param_l(&out_param); | |
262 | return 0; | |
263 | } | |
ddae0349 | 264 | return __mlx4_qp_reserve_range(dev, cnt, align, base, flags); |
fe9a2603 | 265 | } |
a3cdcbfa YP |
266 | EXPORT_SYMBOL_GPL(mlx4_qp_reserve_range); |
267 | ||
c82e9aa0 | 268 | void __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) |
a3cdcbfa YP |
269 | { |
270 | struct mlx4_priv *priv = mlx4_priv(dev); | |
271 | struct mlx4_qp_table *qp_table = &priv->qp_table; | |
a3cdcbfa | 272 | |
fe9a2603 JM |
273 | if (mlx4_is_qp_reserved(dev, (u32) base_qpn)) |
274 | return; | |
d57febe1 | 275 | mlx4_zone_free_entries_unique(qp_table->zones, base_qpn, cnt); |
a3cdcbfa | 276 | } |
fe9a2603 JM |
277 | |
278 | void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) | |
279 | { | |
e7dbeba8 | 280 | u64 in_param = 0; |
fe9a2603 JM |
281 | int err; |
282 | ||
283 | if (mlx4_is_mfunc(dev)) { | |
284 | set_param_l(&in_param, base_qpn); | |
285 | set_param_h(&in_param, cnt); | |
286 | err = mlx4_cmd(dev, in_param, RES_QP, RES_OP_RESERVE, | |
287 | MLX4_CMD_FREE_RES, | |
288 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); | |
289 | if (err) { | |
1a91de28 JP |
290 | mlx4_warn(dev, "Failed to release qp range base:%d cnt:%d\n", |
291 | base_qpn, cnt); | |
fe9a2603 JM |
292 | } |
293 | } else | |
294 | __mlx4_qp_release_range(dev, base_qpn, cnt); | |
295 | } | |
a3cdcbfa YP |
296 | EXPORT_SYMBOL_GPL(mlx4_qp_release_range); |
297 | ||
40f2287b | 298 | int __mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn, gfp_t gfp) |
225c7b1f RD |
299 | { |
300 | struct mlx4_priv *priv = mlx4_priv(dev); | |
301 | struct mlx4_qp_table *qp_table = &priv->qp_table; | |
302 | int err; | |
303 | ||
40f2287b | 304 | err = mlx4_table_get(dev, &qp_table->qp_table, qpn, gfp); |
225c7b1f RD |
305 | if (err) |
306 | goto err_out; | |
307 | ||
40f2287b | 308 | err = mlx4_table_get(dev, &qp_table->auxc_table, qpn, gfp); |
225c7b1f RD |
309 | if (err) |
310 | goto err_put_qp; | |
311 | ||
40f2287b | 312 | err = mlx4_table_get(dev, &qp_table->altc_table, qpn, gfp); |
225c7b1f RD |
313 | if (err) |
314 | goto err_put_auxc; | |
315 | ||
40f2287b | 316 | err = mlx4_table_get(dev, &qp_table->rdmarc_table, qpn, gfp); |
225c7b1f RD |
317 | if (err) |
318 | goto err_put_altc; | |
319 | ||
40f2287b | 320 | err = mlx4_table_get(dev, &qp_table->cmpt_table, qpn, gfp); |
225c7b1f RD |
321 | if (err) |
322 | goto err_put_rdmarc; | |
323 | ||
225c7b1f RD |
324 | return 0; |
325 | ||
225c7b1f | 326 | err_put_rdmarc: |
fe9a2603 | 327 | mlx4_table_put(dev, &qp_table->rdmarc_table, qpn); |
225c7b1f RD |
328 | |
329 | err_put_altc: | |
fe9a2603 | 330 | mlx4_table_put(dev, &qp_table->altc_table, qpn); |
225c7b1f RD |
331 | |
332 | err_put_auxc: | |
fe9a2603 | 333 | mlx4_table_put(dev, &qp_table->auxc_table, qpn); |
225c7b1f RD |
334 | |
335 | err_put_qp: | |
fe9a2603 | 336 | mlx4_table_put(dev, &qp_table->qp_table, qpn); |
225c7b1f RD |
337 | |
338 | err_out: | |
225c7b1f RD |
339 | return err; |
340 | } | |
fe9a2603 | 341 | |
4e2c341b | 342 | static int mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn, gfp_t gfp) |
fe9a2603 | 343 | { |
e7dbeba8 | 344 | u64 param = 0; |
fe9a2603 JM |
345 | |
346 | if (mlx4_is_mfunc(dev)) { | |
347 | set_param_l(¶m, qpn); | |
348 | return mlx4_cmd_imm(dev, param, ¶m, RES_QP, RES_OP_MAP_ICM, | |
349 | MLX4_CMD_ALLOC_RES, MLX4_CMD_TIME_CLASS_A, | |
350 | MLX4_CMD_WRAPPED); | |
351 | } | |
40f2287b | 352 | return __mlx4_qp_alloc_icm(dev, qpn, gfp); |
fe9a2603 JM |
353 | } |
354 | ||
c82e9aa0 | 355 | void __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) |
fe9a2603 JM |
356 | { |
357 | struct mlx4_priv *priv = mlx4_priv(dev); | |
358 | struct mlx4_qp_table *qp_table = &priv->qp_table; | |
359 | ||
360 | mlx4_table_put(dev, &qp_table->cmpt_table, qpn); | |
361 | mlx4_table_put(dev, &qp_table->rdmarc_table, qpn); | |
362 | mlx4_table_put(dev, &qp_table->altc_table, qpn); | |
363 | mlx4_table_put(dev, &qp_table->auxc_table, qpn); | |
364 | mlx4_table_put(dev, &qp_table->qp_table, qpn); | |
365 | } | |
366 | ||
367 | static void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) | |
368 | { | |
e7dbeba8 | 369 | u64 in_param = 0; |
fe9a2603 JM |
370 | |
371 | if (mlx4_is_mfunc(dev)) { | |
372 | set_param_l(&in_param, qpn); | |
373 | if (mlx4_cmd(dev, in_param, RES_QP, RES_OP_MAP_ICM, | |
374 | MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, | |
375 | MLX4_CMD_WRAPPED)) | |
376 | mlx4_warn(dev, "Failed to free icm of qp:%d\n", qpn); | |
377 | } else | |
378 | __mlx4_qp_free_icm(dev, qpn); | |
379 | } | |
380 | ||
40f2287b | 381 | int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp, gfp_t gfp) |
fe9a2603 JM |
382 | { |
383 | struct mlx4_priv *priv = mlx4_priv(dev); | |
384 | struct mlx4_qp_table *qp_table = &priv->qp_table; | |
385 | int err; | |
386 | ||
387 | if (!qpn) | |
388 | return -EINVAL; | |
389 | ||
390 | qp->qpn = qpn; | |
391 | ||
40f2287b | 392 | err = mlx4_qp_alloc_icm(dev, qpn, gfp); |
fe9a2603 JM |
393 | if (err) |
394 | return err; | |
395 | ||
396 | spin_lock_irq(&qp_table->lock); | |
397 | err = radix_tree_insert(&dev->qp_table_tree, qp->qpn & | |
398 | (dev->caps.num_qps - 1), qp); | |
399 | spin_unlock_irq(&qp_table->lock); | |
400 | if (err) | |
401 | goto err_icm; | |
402 | ||
403 | atomic_set(&qp->refcount, 1); | |
404 | init_completion(&qp->free); | |
405 | ||
406 | return 0; | |
407 | ||
408 | err_icm: | |
409 | mlx4_qp_free_icm(dev, qpn); | |
410 | return err; | |
411 | } | |
412 | ||
225c7b1f RD |
413 | EXPORT_SYMBOL_GPL(mlx4_qp_alloc); |
414 | ||
ce8d9e0d | 415 | #define MLX4_UPDATE_QP_SUPPORTED_ATTRS MLX4_UPDATE_QP_SMAC |
09e05c3f | 416 | int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn, |
ce8d9e0d MB |
417 | enum mlx4_update_qp_attr attr, |
418 | struct mlx4_update_qp_params *params) | |
419 | { | |
420 | struct mlx4_cmd_mailbox *mailbox; | |
421 | struct mlx4_update_qp_context *cmd; | |
422 | u64 pri_addr_path_mask = 0; | |
09e05c3f | 423 | u64 qp_mask = 0; |
ce8d9e0d MB |
424 | int err = 0; |
425 | ||
426 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
427 | if (IS_ERR(mailbox)) | |
428 | return PTR_ERR(mailbox); | |
429 | ||
430 | cmd = (struct mlx4_update_qp_context *)mailbox->buf; | |
431 | ||
432 | if (!attr || (attr & ~MLX4_UPDATE_QP_SUPPORTED_ATTRS)) | |
433 | return -EINVAL; | |
434 | ||
435 | if (attr & MLX4_UPDATE_QP_SMAC) { | |
436 | pri_addr_path_mask |= 1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX; | |
437 | cmd->qp_context.pri_path.grh_mylmc = params->smac_index; | |
438 | } | |
439 | ||
09e05c3f MB |
440 | if (attr & MLX4_UPDATE_QP_VSD) { |
441 | qp_mask |= 1ULL << MLX4_UPD_QP_MASK_VSD; | |
442 | if (params->flags & MLX4_UPDATE_QP_PARAMS_FLAGS_VSD_ENABLE) | |
443 | cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN); | |
444 | } | |
445 | ||
ce8d9e0d | 446 | cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask); |
09e05c3f | 447 | cmd->qp_mask = cpu_to_be64(qp_mask); |
ce8d9e0d | 448 | |
09e05c3f | 449 | err = mlx4_cmd(dev, mailbox->dma, qpn & 0xffffff, 0, |
ce8d9e0d MB |
450 | MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A, |
451 | MLX4_CMD_NATIVE); | |
452 | ||
453 | mlx4_free_cmd_mailbox(dev, mailbox); | |
454 | return err; | |
455 | } | |
456 | EXPORT_SYMBOL_GPL(mlx4_update_qp); | |
457 | ||
225c7b1f RD |
458 | void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp) |
459 | { | |
460 | struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; | |
461 | unsigned long flags; | |
462 | ||
463 | spin_lock_irqsave(&qp_table->lock, flags); | |
464 | radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1)); | |
465 | spin_unlock_irqrestore(&qp_table->lock, flags); | |
466 | } | |
467 | EXPORT_SYMBOL_GPL(mlx4_qp_remove); | |
468 | ||
469 | void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp) | |
470 | { | |
225c7b1f RD |
471 | if (atomic_dec_and_test(&qp->refcount)) |
472 | complete(&qp->free); | |
473 | wait_for_completion(&qp->free); | |
474 | ||
fe9a2603 | 475 | mlx4_qp_free_icm(dev, qp->qpn); |
225c7b1f RD |
476 | } |
477 | EXPORT_SYMBOL_GPL(mlx4_qp_free); | |
478 | ||
479 | static int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn) | |
480 | { | |
481 | return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP, | |
f9baff50 | 482 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); |
225c7b1f RD |
483 | } |
484 | ||
d57febe1 MB |
485 | #define MLX4_QP_TABLE_RSS_ETH_PRIORITY 2 |
486 | #define MLX4_QP_TABLE_RAW_ETH_PRIORITY 1 | |
487 | #define MLX4_QP_TABLE_RAW_ETH_SIZE 256 | |
488 | ||
489 | static int mlx4_create_zones(struct mlx4_dev *dev, | |
490 | u32 reserved_bottom_general, | |
491 | u32 reserved_top_general, | |
492 | u32 reserved_bottom_rss, | |
493 | u32 start_offset_rss, | |
494 | u32 max_table_offset) | |
495 | { | |
496 | struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; | |
497 | struct mlx4_bitmap (*bitmap)[MLX4_QP_TABLE_ZONE_NUM] = NULL; | |
498 | int bitmap_initialized = 0; | |
499 | u32 last_offset; | |
500 | int k; | |
501 | int err; | |
502 | ||
503 | qp_table->zones = mlx4_zone_allocator_create(MLX4_ZONE_ALLOC_FLAGS_NO_OVERLAP); | |
504 | ||
505 | if (NULL == qp_table->zones) | |
506 | return -ENOMEM; | |
507 | ||
508 | bitmap = kmalloc(sizeof(*bitmap), GFP_KERNEL); | |
509 | ||
510 | if (NULL == bitmap) { | |
511 | err = -ENOMEM; | |
512 | goto free_zone; | |
513 | } | |
514 | ||
515 | err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_GENERAL, dev->caps.num_qps, | |
516 | (1 << 23) - 1, reserved_bottom_general, | |
517 | reserved_top_general); | |
518 | ||
519 | if (err) | |
520 | goto free_bitmap; | |
521 | ||
522 | ++bitmap_initialized; | |
523 | ||
524 | err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_GENERAL, | |
525 | MLX4_ZONE_FALLBACK_TO_HIGHER_PRIO | | |
526 | MLX4_ZONE_USE_RR, 0, | |
527 | 0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_GENERAL); | |
528 | ||
529 | if (err) | |
530 | goto free_bitmap; | |
531 | ||
532 | err = mlx4_bitmap_init(*bitmap + MLX4_QP_TABLE_ZONE_RSS, | |
533 | reserved_bottom_rss, | |
534 | reserved_bottom_rss - 1, | |
535 | dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], | |
536 | reserved_bottom_rss - start_offset_rss); | |
537 | ||
538 | if (err) | |
539 | goto free_bitmap; | |
540 | ||
541 | ++bitmap_initialized; | |
542 | ||
543 | err = mlx4_zone_add_one(qp_table->zones, *bitmap + MLX4_QP_TABLE_ZONE_RSS, | |
544 | MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO | | |
545 | MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO | | |
546 | MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RSS_ETH_PRIORITY, | |
547 | 0, qp_table->zones_uids + MLX4_QP_TABLE_ZONE_RSS); | |
548 | ||
549 | if (err) | |
550 | goto free_bitmap; | |
551 | ||
552 | last_offset = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; | |
553 | /* We have a single zone for the A0 steering QPs area of the FW. This area | |
554 | * needs to be split into subareas. One set of subareas is for RSS QPs | |
555 | * (in which qp number bits 6 and/or 7 are set); the other set of subareas | |
556 | * is for RAW_ETH QPs, which require that both bits 6 and 7 are zero. | |
557 | * Currently, the values returned by the FW (A0 steering area starting qp number | |
558 | * and A0 steering area size) are such that there are only two subareas -- one | |
559 | * for RSS and one for RAW_ETH. | |
560 | */ | |
561 | for (k = MLX4_QP_TABLE_ZONE_RSS + 1; k < sizeof(*bitmap)/sizeof((*bitmap)[0]); | |
562 | k++) { | |
563 | int size; | |
564 | u32 offset = start_offset_rss; | |
565 | u32 bf_mask; | |
566 | u32 requested_size; | |
567 | ||
568 | /* Assuming MLX4_BF_QP_SKIP_MASK is consecutive ones, this calculates | |
569 | * a mask of all LSB bits set until (and not including) the first | |
570 | * set bit of MLX4_BF_QP_SKIP_MASK. For example, if MLX4_BF_QP_SKIP_MASK | |
571 | * is 0xc0, bf_mask will be 0x3f. | |
572 | */ | |
573 | bf_mask = (MLX4_BF_QP_SKIP_MASK & ~(MLX4_BF_QP_SKIP_MASK - 1)) - 1; | |
574 | requested_size = min((u32)MLX4_QP_TABLE_RAW_ETH_SIZE, bf_mask + 1); | |
575 | ||
576 | if (((last_offset & MLX4_BF_QP_SKIP_MASK) && | |
577 | ((int)(max_table_offset - last_offset)) >= | |
578 | roundup_pow_of_two(MLX4_BF_QP_SKIP_MASK)) || | |
579 | (!(last_offset & MLX4_BF_QP_SKIP_MASK) && | |
580 | !((last_offset + requested_size - 1) & | |
581 | MLX4_BF_QP_SKIP_MASK))) | |
582 | size = requested_size; | |
583 | else { | |
584 | u32 candidate_offset = | |
585 | (last_offset | MLX4_BF_QP_SKIP_MASK | bf_mask) + 1; | |
586 | ||
587 | if (last_offset & MLX4_BF_QP_SKIP_MASK) | |
588 | last_offset = candidate_offset; | |
589 | ||
590 | /* From this point, the BF bits are 0 */ | |
591 | ||
592 | if (last_offset > max_table_offset) { | |
593 | /* need to skip */ | |
594 | size = -1; | |
595 | } else { | |
596 | size = min3(max_table_offset - last_offset, | |
597 | bf_mask - (last_offset & bf_mask), | |
598 | requested_size); | |
599 | if (size < requested_size) { | |
600 | int candidate_size; | |
601 | ||
602 | candidate_size = min3( | |
603 | max_table_offset - candidate_offset, | |
604 | bf_mask - (last_offset & bf_mask), | |
605 | requested_size); | |
606 | ||
607 | /* We will not take this path if last_offset was | |
608 | * already set above to candidate_offset | |
609 | */ | |
610 | if (candidate_size > size) { | |
611 | last_offset = candidate_offset; | |
612 | size = candidate_size; | |
613 | } | |
614 | } | |
615 | } | |
616 | } | |
617 | ||
618 | if (size > 0) { | |
619 | /* mlx4_bitmap_alloc_range will find a contiguous range of "size" | |
620 | * QPs in which both bits 6 and 7 are zero, because we pass it the | |
621 | * MLX4_BF_SKIP_MASK). | |
622 | */ | |
623 | offset = mlx4_bitmap_alloc_range( | |
624 | *bitmap + MLX4_QP_TABLE_ZONE_RSS, | |
625 | size, 1, | |
626 | MLX4_BF_QP_SKIP_MASK); | |
627 | ||
628 | if (offset == (u32)-1) { | |
629 | err = -ENOMEM; | |
630 | break; | |
631 | } | |
632 | ||
633 | last_offset = offset + size; | |
634 | ||
635 | err = mlx4_bitmap_init(*bitmap + k, roundup_pow_of_two(size), | |
636 | roundup_pow_of_two(size) - 1, 0, | |
637 | roundup_pow_of_two(size) - size); | |
638 | } else { | |
639 | /* Add an empty bitmap, we'll allocate from different zones (since | |
640 | * at least one is reserved) | |
641 | */ | |
642 | err = mlx4_bitmap_init(*bitmap + k, 1, | |
643 | MLX4_QP_TABLE_RAW_ETH_SIZE - 1, 0, | |
644 | 0); | |
645 | mlx4_bitmap_alloc_range(*bitmap + k, 1, 1, 0); | |
646 | } | |
647 | ||
648 | if (err) | |
649 | break; | |
650 | ||
651 | ++bitmap_initialized; | |
652 | ||
653 | err = mlx4_zone_add_one(qp_table->zones, *bitmap + k, | |
654 | MLX4_ZONE_ALLOW_ALLOC_FROM_LOWER_PRIO | | |
655 | MLX4_ZONE_ALLOW_ALLOC_FROM_EQ_PRIO | | |
656 | MLX4_ZONE_USE_RR, MLX4_QP_TABLE_RAW_ETH_PRIORITY, | |
657 | offset, qp_table->zones_uids + k); | |
658 | ||
659 | if (err) | |
660 | break; | |
661 | } | |
662 | ||
663 | if (err) | |
664 | goto free_bitmap; | |
665 | ||
666 | qp_table->bitmap_gen = *bitmap; | |
667 | ||
668 | return err; | |
669 | ||
670 | free_bitmap: | |
671 | for (k = 0; k < bitmap_initialized; k++) | |
672 | mlx4_bitmap_cleanup(*bitmap + k); | |
673 | kfree(bitmap); | |
674 | free_zone: | |
675 | mlx4_zone_allocator_destroy(qp_table->zones); | |
676 | return err; | |
677 | } | |
678 | ||
679 | static void mlx4_cleanup_qp_zones(struct mlx4_dev *dev) | |
680 | { | |
681 | struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; | |
682 | ||
683 | if (qp_table->zones) { | |
684 | int i; | |
685 | ||
686 | for (i = 0; | |
687 | i < sizeof(qp_table->zones_uids)/sizeof(qp_table->zones_uids[0]); | |
688 | i++) { | |
689 | struct mlx4_bitmap *bitmap = | |
690 | mlx4_zone_get_bitmap(qp_table->zones, | |
691 | qp_table->zones_uids[i]); | |
692 | ||
693 | mlx4_zone_remove_one(qp_table->zones, qp_table->zones_uids[i]); | |
694 | if (NULL == bitmap) | |
695 | continue; | |
696 | ||
697 | mlx4_bitmap_cleanup(bitmap); | |
698 | } | |
699 | mlx4_zone_allocator_destroy(qp_table->zones); | |
700 | kfree(qp_table->bitmap_gen); | |
701 | qp_table->bitmap_gen = NULL; | |
702 | qp_table->zones = NULL; | |
703 | } | |
704 | } | |
705 | ||
3d73c288 | 706 | int mlx4_init_qp_table(struct mlx4_dev *dev) |
225c7b1f RD |
707 | { |
708 | struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table; | |
709 | int err; | |
93fc9e1b | 710 | int reserved_from_top = 0; |
ab256e5a | 711 | int reserved_from_bot; |
47605df9 | 712 | int k; |
d57febe1 MB |
713 | int fixed_reserved_from_bot_rv = 0; |
714 | int bottom_reserved_for_rss_bitmap; | |
7d077cd3 MB |
715 | u32 max_table_offset = dev->caps.dmfs_high_rate_qpn_base + |
716 | dev->caps.dmfs_high_rate_qpn_range; | |
225c7b1f RD |
717 | |
718 | spin_lock_init(&qp_table->lock); | |
719 | INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC); | |
fe9a2603 JM |
720 | if (mlx4_is_slave(dev)) |
721 | return 0; | |
225c7b1f | 722 | |
d57febe1 | 723 | /* We reserve 2 extra QPs per port for the special QPs. The |
225c7b1f RD |
724 | * block of special QPs must be aligned to a multiple of 8, so |
725 | * round up. | |
0a1405da SH |
726 | * |
727 | * We also reserve the MSB of the 24-bit QP number to indicate | |
728 | * that a QP is an XRC QP. | |
225c7b1f | 729 | */ |
d57febe1 MB |
730 | for (k = 0; k <= MLX4_QP_REGION_BOTTOM; k++) |
731 | fixed_reserved_from_bot_rv += dev->caps.reserved_qps_cnt[k]; | |
732 | ||
733 | if (fixed_reserved_from_bot_rv < max_table_offset) | |
734 | fixed_reserved_from_bot_rv = max_table_offset; | |
735 | ||
736 | /* We reserve at least 1 extra for bitmaps that we don't have enough space for*/ | |
737 | bottom_reserved_for_rss_bitmap = | |
738 | roundup_pow_of_two(fixed_reserved_from_bot_rv + 1); | |
739 | dev->phys_caps.base_sqpn = ALIGN(bottom_reserved_for_rss_bitmap, 8); | |
93fc9e1b YP |
740 | |
741 | { | |
742 | int sort[MLX4_NUM_QP_REGION]; | |
743 | int i, j, tmp; | |
744 | int last_base = dev->caps.num_qps; | |
745 | ||
746 | for (i = 1; i < MLX4_NUM_QP_REGION; ++i) | |
747 | sort[i] = i; | |
748 | ||
d57febe1 MB |
749 | for (i = MLX4_NUM_QP_REGION; i > MLX4_QP_REGION_BOTTOM; --i) { |
750 | for (j = MLX4_QP_REGION_BOTTOM + 2; j < i; ++j) { | |
93fc9e1b YP |
751 | if (dev->caps.reserved_qps_cnt[sort[j]] > |
752 | dev->caps.reserved_qps_cnt[sort[j - 1]]) { | |
753 | tmp = sort[j]; | |
754 | sort[j] = sort[j - 1]; | |
755 | sort[j - 1] = tmp; | |
756 | } | |
757 | } | |
758 | } | |
759 | ||
d57febe1 | 760 | for (i = MLX4_QP_REGION_BOTTOM + 1; i < MLX4_NUM_QP_REGION; ++i) { |
93fc9e1b YP |
761 | last_base -= dev->caps.reserved_qps_cnt[sort[i]]; |
762 | dev->caps.reserved_qps_base[sort[i]] = last_base; | |
763 | reserved_from_top += | |
764 | dev->caps.reserved_qps_cnt[sort[i]]; | |
765 | } | |
93fc9e1b YP |
766 | } |
767 | ||
e2c76824 JM |
768 | /* Reserve 8 real SQPs in both native and SRIOV modes. |
769 | * In addition, in SRIOV mode, reserve 8 proxy SQPs per function | |
770 | * (for all PFs and VFs), and 8 corresponding tunnel QPs. | |
771 | * Each proxy SQP works opposite its own tunnel QP. | |
772 | * | |
773 | * The QPs are arranged as follows: | |
774 | * a. 8 real SQPs | |
775 | * b. All the proxy SQPs (8 per function) | |
776 | * c. All the tunnel QPs (8 per function) | |
777 | */ | |
ab256e5a DB |
778 | reserved_from_bot = mlx4_num_reserved_sqps(dev); |
779 | if (reserved_from_bot + reserved_from_top > dev->caps.num_qps) { | |
780 | mlx4_err(dev, "Number of reserved QPs is higher than number of QPs\n"); | |
781 | return -EINVAL; | |
782 | } | |
e2c76824 | 783 | |
d57febe1 MB |
784 | err = mlx4_create_zones(dev, reserved_from_bot, reserved_from_bot, |
785 | bottom_reserved_for_rss_bitmap, | |
786 | fixed_reserved_from_bot_rv, | |
787 | max_table_offset); | |
788 | ||
47605df9 JM |
789 | if (err) |
790 | return err; | |
e2c76824 | 791 | |
e2c76824 | 792 | if (mlx4_is_mfunc(dev)) { |
47605df9 JM |
793 | /* for PPF use */ |
794 | dev->phys_caps.base_proxy_sqpn = dev->phys_caps.base_sqpn + 8; | |
795 | dev->phys_caps.base_tunnel_sqpn = dev->phys_caps.base_sqpn + 8 + 8 * MLX4_MFUNC_MAX; | |
796 | ||
797 | /* In mfunc, calculate proxy and tunnel qp offsets for the PF here, | |
798 | * since the PF does not call mlx4_slave_caps */ | |
799 | dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); | |
800 | dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); | |
801 | dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); | |
802 | dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL); | |
803 | ||
804 | if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy || | |
805 | !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) { | |
806 | err = -ENOMEM; | |
807 | goto err_mem; | |
808 | } | |
e2c76824 | 809 | |
47605df9 JM |
810 | for (k = 0; k < dev->caps.num_ports; k++) { |
811 | dev->caps.qp0_proxy[k] = dev->phys_caps.base_proxy_sqpn + | |
812 | 8 * mlx4_master_func_num(dev) + k; | |
813 | dev->caps.qp0_tunnel[k] = dev->caps.qp0_proxy[k] + 8 * MLX4_MFUNC_MAX; | |
814 | dev->caps.qp1_proxy[k] = dev->phys_caps.base_proxy_sqpn + | |
815 | 8 * mlx4_master_func_num(dev) + MLX4_MAX_PORTS + k; | |
816 | dev->caps.qp1_tunnel[k] = dev->caps.qp1_proxy[k] + 8 * MLX4_MFUNC_MAX; | |
817 | } | |
818 | } | |
819 | ||
820 | ||
821 | err = mlx4_CONF_SPECIAL_QP(dev, dev->phys_caps.base_sqpn); | |
225c7b1f | 822 | if (err) |
47605df9 | 823 | goto err_mem; |
d57febe1 MB |
824 | |
825 | return err; | |
225c7b1f | 826 | |
47605df9 JM |
827 | err_mem: |
828 | kfree(dev->caps.qp0_tunnel); | |
829 | kfree(dev->caps.qp0_proxy); | |
830 | kfree(dev->caps.qp1_tunnel); | |
831 | kfree(dev->caps.qp1_proxy); | |
832 | dev->caps.qp0_tunnel = dev->caps.qp0_proxy = | |
833 | dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL; | |
d57febe1 | 834 | mlx4_cleanup_qp_zones(dev); |
47605df9 | 835 | return err; |
225c7b1f RD |
836 | } |
837 | ||
838 | void mlx4_cleanup_qp_table(struct mlx4_dev *dev) | |
839 | { | |
fe9a2603 JM |
840 | if (mlx4_is_slave(dev)) |
841 | return; | |
842 | ||
225c7b1f | 843 | mlx4_CONF_SPECIAL_QP(dev, 0); |
d57febe1 MB |
844 | |
845 | mlx4_cleanup_qp_zones(dev); | |
225c7b1f | 846 | } |
6a775e2b JM |
847 | |
848 | int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp, | |
849 | struct mlx4_qp_context *context) | |
850 | { | |
851 | struct mlx4_cmd_mailbox *mailbox; | |
852 | int err; | |
853 | ||
854 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
855 | if (IS_ERR(mailbox)) | |
856 | return PTR_ERR(mailbox); | |
857 | ||
858 | err = mlx4_cmd_box(dev, 0, mailbox->dma, qp->qpn, 0, | |
f9baff50 JM |
859 | MLX4_CMD_QUERY_QP, MLX4_CMD_TIME_CLASS_A, |
860 | MLX4_CMD_WRAPPED); | |
6a775e2b JM |
861 | if (!err) |
862 | memcpy(context, mailbox->buf + 8, sizeof *context); | |
863 | ||
864 | mlx4_free_cmd_mailbox(dev, mailbox); | |
865 | return err; | |
866 | } | |
867 | EXPORT_SYMBOL_GPL(mlx4_qp_query); | |
868 | ||
ed4d3c10 YP |
869 | int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
870 | struct mlx4_qp_context *context, | |
871 | struct mlx4_qp *qp, enum mlx4_qp_state *qp_state) | |
872 | { | |
873 | int err; | |
874 | int i; | |
875 | enum mlx4_qp_state states[] = { | |
876 | MLX4_QP_STATE_RST, | |
877 | MLX4_QP_STATE_INIT, | |
878 | MLX4_QP_STATE_RTR, | |
879 | MLX4_QP_STATE_RTS | |
880 | }; | |
881 | ||
882 | for (i = 0; i < ARRAY_SIZE(states) - 1; i++) { | |
883 | context->flags &= cpu_to_be32(~(0xf << 28)); | |
884 | context->flags |= cpu_to_be32(states[i + 1] << 28); | |
885 | err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1], | |
886 | context, 0, 0, qp); | |
887 | if (err) { | |
1a91de28 | 888 | mlx4_err(dev, "Failed to bring QP to state: %d with error: %d\n", |
ed4d3c10 YP |
889 | states[i + 1], err); |
890 | return err; | |
891 | } | |
892 | ||
893 | *qp_state = states[i + 1]; | |
894 | } | |
895 | ||
896 | return 0; | |
897 | } | |
898 | EXPORT_SYMBOL_GPL(mlx4_qp_to_ready); |