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a0c64a17 JM |
1 | /* |
2 | * Copyright (c) 2012 Mellanox Technologies. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | /***********************************************************/ | |
33 | /*This file support the handling of the Alias GUID feature. */ | |
34 | /***********************************************************/ | |
35 | #include <rdma/ib_mad.h> | |
36 | #include <rdma/ib_smi.h> | |
37 | #include <rdma/ib_cache.h> | |
38 | #include <rdma/ib_sa.h> | |
39 | #include <rdma/ib_pack.h> | |
40 | #include <linux/mlx4/cmd.h> | |
41 | #include <linux/module.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/errno.h> | |
44 | #include <rdma/ib_user_verbs.h> | |
45 | #include <linux/delay.h> | |
46 | #include "mlx4_ib.h" | |
47 | ||
48 | /* | |
49 | The driver keeps the current state of all guids, as they are in the HW. | |
50 | Whenever we receive an smp mad GUIDInfo record, the data will be cached. | |
51 | */ | |
52 | ||
53 | struct mlx4_alias_guid_work_context { | |
54 | u8 port; | |
55 | struct mlx4_ib_dev *dev ; | |
56 | struct ib_sa_query *sa_query; | |
57 | struct completion done; | |
58 | int query_id; | |
59 | struct list_head list; | |
60 | int block_num; | |
99ee4df6 YH |
61 | ib_sa_comp_mask guid_indexes; |
62 | u8 method; | |
a0c64a17 JM |
63 | }; |
64 | ||
65 | struct mlx4_next_alias_guid_work { | |
66 | u8 port; | |
67 | u8 block_num; | |
99ee4df6 | 68 | u8 method; |
a0c64a17 JM |
69 | struct mlx4_sriov_alias_guid_info_rec_det rec_det; |
70 | }; | |
71 | ||
99ee4df6 YH |
72 | static int get_low_record_time_index(struct mlx4_ib_dev *dev, u8 port, |
73 | int *resched_delay_sec); | |
a0c64a17 JM |
74 | |
75 | void mlx4_ib_update_cache_on_guid_change(struct mlx4_ib_dev *dev, int block_num, | |
76 | u8 port_num, u8 *p_data) | |
77 | { | |
78 | int i; | |
79 | u64 guid_indexes; | |
80 | int slave_id; | |
81 | int port_index = port_num - 1; | |
82 | ||
83 | if (!mlx4_is_master(dev->dev)) | |
84 | return; | |
85 | ||
86 | guid_indexes = be64_to_cpu((__force __be64) dev->sriov.alias_guid. | |
87 | ports_guid[port_num - 1]. | |
88 | all_rec_per_port[block_num].guid_indexes); | |
89 | pr_debug("port: %d, guid_indexes: 0x%llx\n", port_num, guid_indexes); | |
90 | ||
91 | for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) { | |
92 | /* The location of the specific index starts from bit number 4 | |
93 | * until bit num 11 */ | |
94 | if (test_bit(i + 4, (unsigned long *)&guid_indexes)) { | |
95 | slave_id = (block_num * NUM_ALIAS_GUID_IN_REC) + i ; | |
96 | if (slave_id >= dev->dev->num_slaves) { | |
97 | pr_debug("The last slave: %d\n", slave_id); | |
98 | return; | |
99 | } | |
100 | ||
101 | /* cache the guid: */ | |
102 | memcpy(&dev->sriov.demux[port_index].guid_cache[slave_id], | |
103 | &p_data[i * GUID_REC_SIZE], | |
104 | GUID_REC_SIZE); | |
105 | } else | |
106 | pr_debug("Guid number: %d in block: %d" | |
107 | " was not updated\n", i, block_num); | |
108 | } | |
109 | } | |
110 | ||
111 | static __be64 get_cached_alias_guid(struct mlx4_ib_dev *dev, int port, int index) | |
112 | { | |
113 | if (index >= NUM_ALIAS_GUID_PER_PORT) { | |
114 | pr_err("%s: ERROR: asked for index:%d\n", __func__, index); | |
8a095030 | 115 | return (__force __be64) -1; |
a0c64a17 JM |
116 | } |
117 | return *(__be64 *)&dev->sriov.demux[port - 1].guid_cache[index]; | |
118 | } | |
119 | ||
120 | ||
c1e7e466 | 121 | ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index) |
a0c64a17 JM |
122 | { |
123 | return IB_SA_COMP_MASK(4 + index); | |
124 | } | |
125 | ||
ee59fa0d YH |
126 | void mlx4_ib_slave_alias_guid_event(struct mlx4_ib_dev *dev, int slave, |
127 | int port, int slave_init) | |
128 | { | |
129 | __be64 curr_guid, required_guid; | |
130 | int record_num = slave / 8; | |
131 | int index = slave % 8; | |
132 | int port_index = port - 1; | |
133 | unsigned long flags; | |
134 | int do_work = 0; | |
135 | ||
136 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags); | |
137 | if (dev->sriov.alias_guid.ports_guid[port_index].state_flags & | |
138 | GUID_STATE_NEED_PORT_INIT) | |
139 | goto unlock; | |
140 | if (!slave_init) { | |
141 | curr_guid = *(__be64 *)&dev->sriov. | |
142 | alias_guid.ports_guid[port_index]. | |
143 | all_rec_per_port[record_num]. | |
144 | all_recs[GUID_REC_SIZE * index]; | |
145 | if (curr_guid == cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL) || | |
146 | !curr_guid) | |
147 | goto unlock; | |
148 | required_guid = cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL); | |
149 | } else { | |
150 | required_guid = mlx4_get_admin_guid(dev->dev, slave, port); | |
151 | if (required_guid == cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) | |
152 | goto unlock; | |
153 | } | |
154 | *(__be64 *)&dev->sriov.alias_guid.ports_guid[port_index]. | |
155 | all_rec_per_port[record_num]. | |
156 | all_recs[GUID_REC_SIZE * index] = required_guid; | |
157 | dev->sriov.alias_guid.ports_guid[port_index]. | |
158 | all_rec_per_port[record_num].guid_indexes | |
159 | |= mlx4_ib_get_aguid_comp_mask_from_ix(index); | |
160 | dev->sriov.alias_guid.ports_guid[port_index]. | |
161 | all_rec_per_port[record_num].status | |
162 | = MLX4_GUID_INFO_STATUS_IDLE; | |
163 | /* set to run immediately */ | |
164 | dev->sriov.alias_guid.ports_guid[port_index]. | |
165 | all_rec_per_port[record_num].time_to_run = 0; | |
166 | dev->sriov.alias_guid.ports_guid[port_index]. | |
167 | all_rec_per_port[record_num]. | |
168 | guids_retry_schedule[index] = 0; | |
169 | do_work = 1; | |
170 | unlock: | |
171 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags); | |
172 | ||
173 | if (do_work) | |
174 | mlx4_ib_init_alias_guid_work(dev, port_index); | |
175 | } | |
176 | ||
a0c64a17 JM |
177 | /* |
178 | * Whenever new GUID is set/unset (guid table change) create event and | |
179 | * notify the relevant slave (master also should be notified). | |
180 | * If the GUID value is not as we have in the cache the slave will not be | |
181 | * updated; in this case it waits for the smp_snoop or the port management | |
182 | * event to call the function and to update the slave. | |
183 | * block_number - the index of the block (16 blocks available) | |
184 | * port_number - 1 or 2 | |
185 | */ | |
186 | void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev, | |
187 | int block_num, u8 port_num, | |
188 | u8 *p_data) | |
189 | { | |
190 | int i; | |
191 | u64 guid_indexes; | |
74d4943f | 192 | int slave_id, slave_port; |
a0c64a17 JM |
193 | enum slave_port_state new_state; |
194 | enum slave_port_state prev_state; | |
195 | __be64 tmp_cur_ag, form_cache_ag; | |
196 | enum slave_port_gen_event gen_event; | |
99ee4df6 YH |
197 | struct mlx4_sriov_alias_guid_info_rec_det *rec; |
198 | unsigned long flags; | |
199 | __be64 required_value; | |
a0c64a17 JM |
200 | |
201 | if (!mlx4_is_master(dev->dev)) | |
202 | return; | |
203 | ||
99ee4df6 YH |
204 | rec = &dev->sriov.alias_guid.ports_guid[port_num - 1]. |
205 | all_rec_per_port[block_num]; | |
a0c64a17 JM |
206 | guid_indexes = be64_to_cpu((__force __be64) dev->sriov.alias_guid. |
207 | ports_guid[port_num - 1]. | |
208 | all_rec_per_port[block_num].guid_indexes); | |
209 | pr_debug("port: %d, guid_indexes: 0x%llx\n", port_num, guid_indexes); | |
210 | ||
211 | /*calculate the slaves and notify them*/ | |
212 | for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) { | |
213 | /* the location of the specific index runs from bits 4..11 */ | |
214 | if (!(test_bit(i + 4, (unsigned long *)&guid_indexes))) | |
215 | continue; | |
216 | ||
217 | slave_id = (block_num * NUM_ALIAS_GUID_IN_REC) + i ; | |
872bf2fb | 218 | if (slave_id >= dev->dev->persist->num_vfs + 1) |
a0c64a17 | 219 | return; |
74d4943f OG |
220 | |
221 | slave_port = mlx4_phys_to_slave_port(dev->dev, slave_id, port_num); | |
222 | if (slave_port < 0) /* this port isn't available for the VF */ | |
223 | continue; | |
224 | ||
a0c64a17 JM |
225 | tmp_cur_ag = *(__be64 *)&p_data[i * GUID_REC_SIZE]; |
226 | form_cache_ag = get_cached_alias_guid(dev, port_num, | |
227 | (NUM_ALIAS_GUID_IN_REC * block_num) + i); | |
228 | /* | |
229 | * Check if guid is not the same as in the cache, | |
230 | * If it is different, wait for the snoop_smp or the port mgmt | |
231 | * change event to update the slave on its port state change | |
232 | */ | |
233 | if (tmp_cur_ag != form_cache_ag) | |
234 | continue; | |
a0c64a17 | 235 | |
99ee4df6 YH |
236 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags); |
237 | required_value = *(__be64 *)&rec->all_recs[i * GUID_REC_SIZE]; | |
238 | ||
239 | if (required_value == cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) | |
240 | required_value = 0; | |
241 | ||
242 | if (tmp_cur_ag == required_value) { | |
243 | rec->guid_indexes = rec->guid_indexes & | |
244 | ~mlx4_ib_get_aguid_comp_mask_from_ix(i); | |
245 | } else { | |
246 | /* may notify port down if value is 0 */ | |
247 | if (tmp_cur_ag != MLX4_NOT_SET_GUID) { | |
248 | spin_unlock_irqrestore(&dev->sriov. | |
249 | alias_guid.ag_work_lock, flags); | |
250 | continue; | |
251 | } | |
252 | } | |
253 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, | |
254 | flags); | |
255 | mlx4_gen_guid_change_eqe(dev->dev, slave_id, port_num); | |
a0c64a17 JM |
256 | /*2 cases: Valid GUID, and Invalid Guid*/ |
257 | ||
258 | if (tmp_cur_ag != MLX4_NOT_SET_GUID) { /*valid GUID*/ | |
259 | prev_state = mlx4_get_slave_port_state(dev->dev, slave_id, port_num); | |
260 | new_state = set_and_calc_slave_port_state(dev->dev, slave_id, port_num, | |
261 | MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID, | |
262 | &gen_event); | |
263 | pr_debug("slave: %d, port: %d prev_port_state: %d," | |
264 | " new_port_state: %d, gen_event: %d\n", | |
265 | slave_id, port_num, prev_state, new_state, gen_event); | |
266 | if (gen_event == SLAVE_PORT_GEN_EVENT_UP) { | |
267 | pr_debug("sending PORT_UP event to slave: %d, port: %d\n", | |
268 | slave_id, port_num); | |
269 | mlx4_gen_port_state_change_eqe(dev->dev, slave_id, | |
270 | port_num, MLX4_PORT_CHANGE_SUBTYPE_ACTIVE); | |
271 | } | |
272 | } else { /* request to invalidate GUID */ | |
273 | set_and_calc_slave_port_state(dev->dev, slave_id, port_num, | |
274 | MLX4_PORT_STATE_IB_EVENT_GID_INVALID, | |
275 | &gen_event); | |
99ee4df6 YH |
276 | if (gen_event == SLAVE_PORT_GEN_EVENT_DOWN) { |
277 | pr_debug("sending PORT DOWN event to slave: %d, port: %d\n", | |
278 | slave_id, port_num); | |
279 | mlx4_gen_port_state_change_eqe(dev->dev, | |
280 | slave_id, | |
281 | port_num, | |
282 | MLX4_PORT_CHANGE_SUBTYPE_DOWN); | |
283 | } | |
a0c64a17 JM |
284 | } |
285 | } | |
286 | } | |
287 | ||
288 | static void aliasguid_query_handler(int status, | |
289 | struct ib_sa_guidinfo_rec *guid_rec, | |
290 | void *context) | |
291 | { | |
292 | struct mlx4_ib_dev *dev; | |
293 | struct mlx4_alias_guid_work_context *cb_ctx = context; | |
294 | u8 port_index ; | |
295 | int i; | |
296 | struct mlx4_sriov_alias_guid_info_rec_det *rec; | |
297 | unsigned long flags, flags1; | |
99ee4df6 YH |
298 | ib_sa_comp_mask declined_guid_indexes = 0; |
299 | ib_sa_comp_mask applied_guid_indexes = 0; | |
300 | unsigned int resched_delay_sec = 0; | |
a0c64a17 JM |
301 | |
302 | if (!context) | |
303 | return; | |
304 | ||
305 | dev = cb_ctx->dev; | |
306 | port_index = cb_ctx->port - 1; | |
307 | rec = &dev->sriov.alias_guid.ports_guid[port_index]. | |
308 | all_rec_per_port[cb_ctx->block_num]; | |
309 | ||
310 | if (status) { | |
a0c64a17 JM |
311 | pr_debug("(port: %d) failed: status = %d\n", |
312 | cb_ctx->port, status); | |
99ee4df6 | 313 | rec->time_to_run = ktime_get_real_ns() + 1 * NSEC_PER_SEC; |
a0c64a17 JM |
314 | goto out; |
315 | } | |
316 | ||
317 | if (guid_rec->block_num != cb_ctx->block_num) { | |
318 | pr_err("block num mismatch: %d != %d\n", | |
319 | cb_ctx->block_num, guid_rec->block_num); | |
320 | goto out; | |
321 | } | |
322 | ||
323 | pr_debug("lid/port: %d/%d, block_num: %d\n", | |
324 | be16_to_cpu(guid_rec->lid), cb_ctx->port, | |
325 | guid_rec->block_num); | |
326 | ||
327 | rec = &dev->sriov.alias_guid.ports_guid[port_index]. | |
328 | all_rec_per_port[guid_rec->block_num]; | |
329 | ||
99ee4df6 | 330 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags); |
a0c64a17 | 331 | for (i = 0 ; i < NUM_ALIAS_GUID_IN_REC; i++) { |
99ee4df6 YH |
332 | __be64 sm_response, required_val; |
333 | ||
334 | if (!(cb_ctx->guid_indexes & | |
335 | mlx4_ib_get_aguid_comp_mask_from_ix(i))) | |
336 | continue; | |
337 | sm_response = *(__be64 *)&guid_rec->guid_info_list | |
338 | [i * GUID_REC_SIZE]; | |
339 | required_val = *(__be64 *)&rec->all_recs[i * GUID_REC_SIZE]; | |
340 | if (cb_ctx->method == MLX4_GUID_INFO_RECORD_DELETE) { | |
341 | if (required_val == | |
342 | cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) | |
343 | goto next_entry; | |
344 | ||
345 | /* A new value was set till we got the response */ | |
346 | pr_debug("need to set new value %llx, record num %d, block_num:%d\n", | |
347 | be64_to_cpu(required_val), | |
348 | i, guid_rec->block_num); | |
349 | goto entry_declined; | |
350 | } | |
351 | ||
a0c64a17 | 352 | /* check if the SM didn't assign one of the records. |
99ee4df6 | 353 | * if it didn't, re-ask for. |
a0c64a17 | 354 | */ |
99ee4df6 YH |
355 | if (sm_response == MLX4_NOT_SET_GUID) { |
356 | if (rec->guids_retry_schedule[i] == 0) | |
f5479601 YH |
357 | mlx4_ib_warn(&dev->ib_dev, |
358 | "%s:Record num %d in block_num: %d was declined by SM\n", | |
359 | __func__, i, | |
360 | guid_rec->block_num); | |
99ee4df6 | 361 | goto entry_declined; |
a0c64a17 JM |
362 | } else { |
363 | /* properly assigned record. */ | |
364 | /* We save the GUID we just got from the SM in the | |
365 | * admin_guid in order to be persistent, and in the | |
366 | * request from the sm the process will ask for the same GUID */ | |
f5479601 | 367 | if (required_val && |
99ee4df6 YH |
368 | sm_response != required_val) { |
369 | /* Warn only on first retry */ | |
370 | if (rec->guids_retry_schedule[i] == 0) | |
371 | mlx4_ib_warn(&dev->ib_dev, "%s: Failed to set" | |
372 | " admin guid after SysAdmin " | |
373 | "configuration. " | |
374 | "Record num %d in block_num:%d " | |
375 | "was declined by SM, " | |
376 | "new val(0x%llx) was kept, SM returned (0x%llx)\n", | |
377 | __func__, i, | |
378 | guid_rec->block_num, | |
379 | be64_to_cpu(required_val), | |
380 | be64_to_cpu(sm_response)); | |
381 | goto entry_declined; | |
a0c64a17 | 382 | } else { |
99ee4df6 YH |
383 | *(__be64 *)&rec->all_recs[i * GUID_REC_SIZE] = |
384 | sm_response; | |
2350f247 YH |
385 | if (required_val == 0) |
386 | mlx4_set_admin_guid(dev->dev, | |
387 | sm_response, | |
388 | (guid_rec->block_num | |
389 | * NUM_ALIAS_GUID_IN_REC) + i, | |
390 | cb_ctx->port); | |
99ee4df6 | 391 | goto next_entry; |
a0c64a17 JM |
392 | } |
393 | } | |
99ee4df6 YH |
394 | entry_declined: |
395 | declined_guid_indexes |= mlx4_ib_get_aguid_comp_mask_from_ix(i); | |
396 | rec->guids_retry_schedule[i] = | |
397 | (rec->guids_retry_schedule[i] == 0) ? 1 : | |
398 | min((unsigned int)60, | |
399 | rec->guids_retry_schedule[i] * 2); | |
400 | /* using the minimum value among all entries in that record */ | |
401 | resched_delay_sec = (resched_delay_sec == 0) ? | |
402 | rec->guids_retry_schedule[i] : | |
403 | min(resched_delay_sec, | |
404 | rec->guids_retry_schedule[i]); | |
405 | continue; | |
406 | ||
407 | next_entry: | |
408 | rec->guids_retry_schedule[i] = 0; | |
409 | } | |
410 | ||
411 | applied_guid_indexes = cb_ctx->guid_indexes & ~declined_guid_indexes; | |
412 | if (declined_guid_indexes || | |
413 | rec->guid_indexes & ~(applied_guid_indexes)) { | |
414 | pr_debug("record=%d wasn't fully set, guid_indexes=0x%llx applied_indexes=0x%llx, declined_indexes=0x%llx\n", | |
415 | guid_rec->block_num, | |
416 | be64_to_cpu((__force __be64)rec->guid_indexes), | |
417 | be64_to_cpu((__force __be64)applied_guid_indexes), | |
418 | be64_to_cpu((__force __be64)declined_guid_indexes)); | |
419 | rec->time_to_run = ktime_get_real_ns() + | |
420 | resched_delay_sec * NSEC_PER_SEC; | |
421 | } else { | |
422 | rec->status = MLX4_GUID_INFO_STATUS_SET; | |
a0c64a17 | 423 | } |
99ee4df6 | 424 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags); |
a0c64a17 JM |
425 | /* |
426 | The func is call here to close the cases when the | |
427 | sm doesn't send smp, so in the sa response the driver | |
428 | notifies the slave. | |
429 | */ | |
430 | mlx4_ib_notify_slaves_on_guid_change(dev, guid_rec->block_num, | |
431 | cb_ctx->port, | |
432 | guid_rec->guid_info_list); | |
433 | out: | |
434 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
435 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
99ee4df6 YH |
436 | if (!dev->sriov.is_going_down) { |
437 | get_low_record_time_index(dev, port_index, &resched_delay_sec); | |
a0c64a17 JM |
438 | queue_delayed_work(dev->sriov.alias_guid.ports_guid[port_index].wq, |
439 | &dev->sriov.alias_guid.ports_guid[port_index]. | |
99ee4df6 YH |
440 | alias_guid_work, |
441 | msecs_to_jiffies(resched_delay_sec * 1000)); | |
442 | } | |
a0c64a17 JM |
443 | if (cb_ctx->sa_query) { |
444 | list_del(&cb_ctx->list); | |
445 | kfree(cb_ctx); | |
446 | } else | |
447 | complete(&cb_ctx->done); | |
448 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
449 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
450 | } | |
451 | ||
452 | static void invalidate_guid_record(struct mlx4_ib_dev *dev, u8 port, int index) | |
453 | { | |
454 | int i; | |
455 | u64 cur_admin_val; | |
456 | ib_sa_comp_mask comp_mask = 0; | |
457 | ||
458 | dev->sriov.alias_guid.ports_guid[port - 1].all_rec_per_port[index].status | |
99ee4df6 | 459 | = MLX4_GUID_INFO_STATUS_SET; |
a0c64a17 JM |
460 | |
461 | /* calculate the comp_mask for that record.*/ | |
462 | for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) { | |
463 | cur_admin_val = | |
464 | *(u64 *)&dev->sriov.alias_guid.ports_guid[port - 1]. | |
465 | all_rec_per_port[index].all_recs[GUID_REC_SIZE * i]; | |
466 | /* | |
467 | check the admin value: if it's for delete (~00LL) or | |
468 | it is the first guid of the first record (hw guid) or | |
469 | the records is not in ownership of the sysadmin and the sm doesn't | |
470 | need to assign GUIDs, then don't put it up for assignment. | |
471 | */ | |
472 | if (MLX4_GUID_FOR_DELETE_VAL == cur_admin_val || | |
f5479601 | 473 | (!index && !i)) |
a0c64a17 | 474 | continue; |
c1e7e466 | 475 | comp_mask |= mlx4_ib_get_aguid_comp_mask_from_ix(i); |
a0c64a17 JM |
476 | } |
477 | dev->sriov.alias_guid.ports_guid[port - 1]. | |
99ee4df6 YH |
478 | all_rec_per_port[index].guid_indexes |= comp_mask; |
479 | if (dev->sriov.alias_guid.ports_guid[port - 1]. | |
480 | all_rec_per_port[index].guid_indexes) | |
481 | dev->sriov.alias_guid.ports_guid[port - 1]. | |
482 | all_rec_per_port[index].status = MLX4_GUID_INFO_STATUS_IDLE; | |
483 | ||
a0c64a17 JM |
484 | } |
485 | ||
486 | static int set_guid_rec(struct ib_device *ibdev, | |
99ee4df6 | 487 | struct mlx4_next_alias_guid_work *rec) |
a0c64a17 JM |
488 | { |
489 | int err; | |
490 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
491 | struct ib_sa_guidinfo_rec guid_info_rec; | |
492 | ib_sa_comp_mask comp_mask; | |
493 | struct ib_port_attr attr; | |
494 | struct mlx4_alias_guid_work_context *callback_context; | |
495 | unsigned long resched_delay, flags, flags1; | |
99ee4df6 YH |
496 | u8 port = rec->port + 1; |
497 | int index = rec->block_num; | |
498 | struct mlx4_sriov_alias_guid_info_rec_det *rec_det = &rec->rec_det; | |
a0c64a17 JM |
499 | struct list_head *head = |
500 | &dev->sriov.alias_guid.ports_guid[port - 1].cb_list; | |
501 | ||
502 | err = __mlx4_ib_query_port(ibdev, port, &attr, 1); | |
503 | if (err) { | |
504 | pr_debug("mlx4_ib_query_port failed (err: %d), port: %d\n", | |
505 | err, port); | |
506 | return err; | |
507 | } | |
508 | /*check the port was configured by the sm, otherwise no need to send */ | |
509 | if (attr.state != IB_PORT_ACTIVE) { | |
510 | pr_debug("port %d not active...rescheduling\n", port); | |
511 | resched_delay = 5 * HZ; | |
512 | err = -EAGAIN; | |
513 | goto new_schedule; | |
514 | } | |
515 | ||
516 | callback_context = kmalloc(sizeof *callback_context, GFP_KERNEL); | |
517 | if (!callback_context) { | |
518 | err = -ENOMEM; | |
519 | resched_delay = HZ * 5; | |
520 | goto new_schedule; | |
521 | } | |
522 | callback_context->port = port; | |
523 | callback_context->dev = dev; | |
524 | callback_context->block_num = index; | |
99ee4df6 YH |
525 | callback_context->guid_indexes = rec_det->guid_indexes; |
526 | callback_context->method = rec->method; | |
a0c64a17 JM |
527 | |
528 | memset(&guid_info_rec, 0, sizeof (struct ib_sa_guidinfo_rec)); | |
529 | ||
530 | guid_info_rec.lid = cpu_to_be16(attr.lid); | |
531 | guid_info_rec.block_num = index; | |
532 | ||
533 | memcpy(guid_info_rec.guid_info_list, rec_det->all_recs, | |
534 | GUID_REC_SIZE * NUM_ALIAS_GUID_IN_REC); | |
535 | comp_mask = IB_SA_GUIDINFO_REC_LID | IB_SA_GUIDINFO_REC_BLOCK_NUM | | |
536 | rec_det->guid_indexes; | |
537 | ||
538 | init_completion(&callback_context->done); | |
539 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
540 | list_add_tail(&callback_context->list, head); | |
541 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
542 | ||
543 | callback_context->query_id = | |
544 | ib_sa_guid_info_rec_query(dev->sriov.alias_guid.sa_client, | |
545 | ibdev, port, &guid_info_rec, | |
99ee4df6 | 546 | comp_mask, rec->method, 1000, |
a0c64a17 JM |
547 | GFP_KERNEL, aliasguid_query_handler, |
548 | callback_context, | |
549 | &callback_context->sa_query); | |
550 | if (callback_context->query_id < 0) { | |
551 | pr_debug("ib_sa_guid_info_rec_query failed, query_id: " | |
552 | "%d. will reschedule to the next 1 sec.\n", | |
553 | callback_context->query_id); | |
554 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
555 | list_del(&callback_context->list); | |
556 | kfree(callback_context); | |
557 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
558 | resched_delay = 1 * HZ; | |
559 | err = -EAGAIN; | |
560 | goto new_schedule; | |
561 | } | |
562 | err = 0; | |
563 | goto out; | |
564 | ||
565 | new_schedule: | |
566 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
567 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
568 | invalidate_guid_record(dev, port, index); | |
569 | if (!dev->sriov.is_going_down) { | |
570 | queue_delayed_work(dev->sriov.alias_guid.ports_guid[port - 1].wq, | |
571 | &dev->sriov.alias_guid.ports_guid[port - 1].alias_guid_work, | |
572 | resched_delay); | |
573 | } | |
574 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
575 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
576 | ||
577 | out: | |
578 | return err; | |
579 | } | |
580 | ||
f5479601 YH |
581 | static void mlx4_ib_guid_port_init(struct mlx4_ib_dev *dev, int port) |
582 | { | |
583 | int j, k, entry; | |
584 | __be64 guid; | |
585 | ||
586 | /*Check if the SM doesn't need to assign the GUIDs*/ | |
587 | for (j = 0; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) { | |
588 | for (k = 0; k < NUM_ALIAS_GUID_IN_REC; k++) { | |
589 | entry = j * NUM_ALIAS_GUID_IN_REC + k; | |
590 | /* no request for the 0 entry (hw guid) */ | |
591 | if (!entry || entry > dev->dev->persist->num_vfs || | |
592 | !mlx4_is_slave_active(dev->dev, entry)) | |
593 | continue; | |
594 | guid = mlx4_get_admin_guid(dev->dev, entry, port); | |
595 | *(__be64 *)&dev->sriov.alias_guid.ports_guid[port - 1]. | |
596 | all_rec_per_port[j].all_recs | |
597 | [GUID_REC_SIZE * k] = guid; | |
598 | pr_debug("guid was set, entry=%d, val=0x%llx, port=%d\n", | |
599 | entry, | |
600 | be64_to_cpu(guid), | |
601 | port); | |
602 | } | |
603 | } | |
604 | } | |
a0c64a17 JM |
605 | void mlx4_ib_invalidate_all_guid_record(struct mlx4_ib_dev *dev, int port) |
606 | { | |
607 | int i; | |
608 | unsigned long flags, flags1; | |
609 | ||
610 | pr_debug("port %d\n", port); | |
611 | ||
612 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
613 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
f5479601 YH |
614 | |
615 | if (dev->sriov.alias_guid.ports_guid[port - 1].state_flags & | |
616 | GUID_STATE_NEED_PORT_INIT) { | |
617 | mlx4_ib_guid_port_init(dev, port); | |
618 | dev->sriov.alias_guid.ports_guid[port - 1].state_flags &= | |
619 | (~GUID_STATE_NEED_PORT_INIT); | |
620 | } | |
a0c64a17 JM |
621 | for (i = 0; i < NUM_ALIAS_GUID_REC_IN_PORT; i++) |
622 | invalidate_guid_record(dev, port, i); | |
623 | ||
624 | if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) { | |
625 | /* | |
626 | make sure no work waits in the queue, if the work is already | |
627 | queued(not on the timer) the cancel will fail. That is not a problem | |
628 | because we just want the work started. | |
629 | */ | |
7a9a2970 | 630 | cancel_delayed_work(&dev->sriov.alias_guid. |
a0c64a17 JM |
631 | ports_guid[port - 1].alias_guid_work); |
632 | queue_delayed_work(dev->sriov.alias_guid.ports_guid[port - 1].wq, | |
633 | &dev->sriov.alias_guid.ports_guid[port - 1].alias_guid_work, | |
634 | 0); | |
635 | } | |
636 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
637 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
638 | } | |
639 | ||
99ee4df6 YH |
640 | static void set_required_record(struct mlx4_ib_dev *dev, u8 port, |
641 | struct mlx4_next_alias_guid_work *next_rec, | |
642 | int record_index) | |
643 | { | |
644 | int i; | |
645 | int lowset_time_entry = -1; | |
646 | int lowest_time = 0; | |
647 | ib_sa_comp_mask delete_guid_indexes = 0; | |
648 | ib_sa_comp_mask set_guid_indexes = 0; | |
649 | struct mlx4_sriov_alias_guid_info_rec_det *rec = | |
650 | &dev->sriov.alias_guid.ports_guid[port]. | |
651 | all_rec_per_port[record_index]; | |
652 | ||
653 | for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) { | |
654 | if (!(rec->guid_indexes & | |
655 | mlx4_ib_get_aguid_comp_mask_from_ix(i))) | |
656 | continue; | |
657 | ||
658 | if (*(__be64 *)&rec->all_recs[i * GUID_REC_SIZE] == | |
659 | cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) | |
660 | delete_guid_indexes |= | |
661 | mlx4_ib_get_aguid_comp_mask_from_ix(i); | |
662 | else | |
663 | set_guid_indexes |= | |
664 | mlx4_ib_get_aguid_comp_mask_from_ix(i); | |
665 | ||
666 | if (lowset_time_entry == -1 || rec->guids_retry_schedule[i] <= | |
667 | lowest_time) { | |
668 | lowset_time_entry = i; | |
669 | lowest_time = rec->guids_retry_schedule[i]; | |
670 | } | |
671 | } | |
672 | ||
673 | memcpy(&next_rec->rec_det, rec, sizeof(*rec)); | |
674 | next_rec->port = port; | |
675 | next_rec->block_num = record_index; | |
676 | ||
677 | if (*(__be64 *)&rec->all_recs[lowset_time_entry * GUID_REC_SIZE] == | |
678 | cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) { | |
679 | next_rec->rec_det.guid_indexes = delete_guid_indexes; | |
680 | next_rec->method = MLX4_GUID_INFO_RECORD_DELETE; | |
681 | } else { | |
682 | next_rec->rec_det.guid_indexes = set_guid_indexes; | |
683 | next_rec->method = MLX4_GUID_INFO_RECORD_SET; | |
684 | } | |
685 | } | |
686 | ||
687 | /* return index of record that should be updated based on lowest | |
688 | * rescheduled time | |
689 | */ | |
690 | static int get_low_record_time_index(struct mlx4_ib_dev *dev, u8 port, | |
691 | int *resched_delay_sec) | |
692 | { | |
693 | int record_index = -1; | |
694 | u64 low_record_time = 0; | |
695 | struct mlx4_sriov_alias_guid_info_rec_det rec; | |
696 | int j; | |
697 | ||
698 | for (j = 0; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) { | |
699 | rec = dev->sriov.alias_guid.ports_guid[port]. | |
700 | all_rec_per_port[j]; | |
701 | if (rec.status == MLX4_GUID_INFO_STATUS_IDLE && | |
702 | rec.guid_indexes) { | |
703 | if (record_index == -1 || | |
704 | rec.time_to_run < low_record_time) { | |
705 | record_index = j; | |
706 | low_record_time = rec.time_to_run; | |
707 | } | |
708 | } | |
709 | } | |
710 | if (resched_delay_sec) { | |
711 | u64 curr_time = ktime_get_real_ns(); | |
712 | ||
713 | *resched_delay_sec = (low_record_time < curr_time) ? 0 : | |
714 | div_u64((low_record_time - curr_time), NSEC_PER_SEC); | |
715 | } | |
716 | ||
717 | return record_index; | |
718 | } | |
719 | ||
a0c64a17 JM |
720 | /* The function returns the next record that was |
721 | * not configured (or failed to be configured) */ | |
722 | static int get_next_record_to_update(struct mlx4_ib_dev *dev, u8 port, | |
723 | struct mlx4_next_alias_guid_work *rec) | |
724 | { | |
a0c64a17 | 725 | unsigned long flags; |
99ee4df6 YH |
726 | int record_index; |
727 | int ret = 0; | |
a0c64a17 | 728 | |
99ee4df6 YH |
729 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags); |
730 | record_index = get_low_record_time_index(dev, port, NULL); | |
731 | ||
732 | if (record_index < 0) { | |
733 | ret = -ENOENT; | |
734 | goto out; | |
a0c64a17 | 735 | } |
99ee4df6 YH |
736 | |
737 | set_required_record(dev, port, rec, record_index); | |
738 | out: | |
739 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags); | |
740 | return ret; | |
a0c64a17 JM |
741 | } |
742 | ||
a0c64a17 JM |
743 | static void alias_guid_work(struct work_struct *work) |
744 | { | |
745 | struct delayed_work *delay = to_delayed_work(work); | |
746 | int ret = 0; | |
747 | struct mlx4_next_alias_guid_work *rec; | |
748 | struct mlx4_sriov_alias_guid_port_rec_det *sriov_alias_port = | |
749 | container_of(delay, struct mlx4_sriov_alias_guid_port_rec_det, | |
750 | alias_guid_work); | |
751 | struct mlx4_sriov_alias_guid *sriov_alias_guid = sriov_alias_port->parent; | |
752 | struct mlx4_ib_sriov *ib_sriov = container_of(sriov_alias_guid, | |
753 | struct mlx4_ib_sriov, | |
754 | alias_guid); | |
755 | struct mlx4_ib_dev *dev = container_of(ib_sriov, struct mlx4_ib_dev, sriov); | |
756 | ||
757 | rec = kzalloc(sizeof *rec, GFP_KERNEL); | |
758 | if (!rec) { | |
759 | pr_err("alias_guid_work: No Memory\n"); | |
760 | return; | |
761 | } | |
762 | ||
763 | pr_debug("starting [port: %d]...\n", sriov_alias_port->port + 1); | |
764 | ret = get_next_record_to_update(dev, sriov_alias_port->port, rec); | |
765 | if (ret) { | |
766 | pr_debug("No more records to update.\n"); | |
767 | goto out; | |
768 | } | |
769 | ||
99ee4df6 | 770 | set_guid_rec(&dev->ib_dev, rec); |
a0c64a17 JM |
771 | out: |
772 | kfree(rec); | |
773 | } | |
774 | ||
775 | ||
776 | void mlx4_ib_init_alias_guid_work(struct mlx4_ib_dev *dev, int port) | |
777 | { | |
778 | unsigned long flags, flags1; | |
779 | ||
780 | if (!mlx4_is_master(dev->dev)) | |
781 | return; | |
782 | spin_lock_irqsave(&dev->sriov.going_down_lock, flags); | |
783 | spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
784 | if (!dev->sriov.is_going_down) { | |
99ee4df6 YH |
785 | /* If there is pending one should cancell then run, otherwise |
786 | * won't run till previous one is ended as same work | |
787 | * struct is used. | |
788 | */ | |
789 | cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[port]. | |
790 | alias_guid_work); | |
a0c64a17 JM |
791 | queue_delayed_work(dev->sriov.alias_guid.ports_guid[port].wq, |
792 | &dev->sriov.alias_guid.ports_guid[port].alias_guid_work, 0); | |
793 | } | |
794 | spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1); | |
795 | spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); | |
796 | } | |
797 | ||
798 | void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev) | |
799 | { | |
800 | int i; | |
801 | struct mlx4_ib_sriov *sriov = &dev->sriov; | |
802 | struct mlx4_alias_guid_work_context *cb_ctx; | |
803 | struct mlx4_sriov_alias_guid_port_rec_det *det; | |
804 | struct ib_sa_query *sa_query; | |
805 | unsigned long flags; | |
806 | ||
807 | for (i = 0 ; i < dev->num_ports; i++) { | |
808 | cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work); | |
809 | det = &sriov->alias_guid.ports_guid[i]; | |
810 | spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags); | |
811 | while (!list_empty(&det->cb_list)) { | |
812 | cb_ctx = list_entry(det->cb_list.next, | |
813 | struct mlx4_alias_guid_work_context, | |
814 | list); | |
815 | sa_query = cb_ctx->sa_query; | |
816 | cb_ctx->sa_query = NULL; | |
817 | list_del(&cb_ctx->list); | |
818 | spin_unlock_irqrestore(&sriov->alias_guid.ag_work_lock, flags); | |
819 | ib_sa_cancel_query(cb_ctx->query_id, sa_query); | |
820 | wait_for_completion(&cb_ctx->done); | |
821 | kfree(cb_ctx); | |
822 | spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags); | |
823 | } | |
824 | spin_unlock_irqrestore(&sriov->alias_guid.ag_work_lock, flags); | |
825 | } | |
826 | for (i = 0 ; i < dev->num_ports; i++) { | |
827 | flush_workqueue(dev->sriov.alias_guid.ports_guid[i].wq); | |
828 | destroy_workqueue(dev->sriov.alias_guid.ports_guid[i].wq); | |
829 | } | |
830 | ib_sa_unregister_client(dev->sriov.alias_guid.sa_client); | |
831 | kfree(dev->sriov.alias_guid.sa_client); | |
832 | } | |
833 | ||
834 | int mlx4_ib_init_alias_guid_service(struct mlx4_ib_dev *dev) | |
835 | { | |
836 | char alias_wq_name[15]; | |
837 | int ret = 0; | |
f5479601 | 838 | int i, j; |
a0c64a17 JM |
839 | union ib_gid gid; |
840 | ||
841 | if (!mlx4_is_master(dev->dev)) | |
842 | return 0; | |
843 | dev->sriov.alias_guid.sa_client = | |
844 | kzalloc(sizeof *dev->sriov.alias_guid.sa_client, GFP_KERNEL); | |
845 | if (!dev->sriov.alias_guid.sa_client) | |
846 | return -ENOMEM; | |
847 | ||
848 | ib_sa_register_client(dev->sriov.alias_guid.sa_client); | |
849 | ||
850 | spin_lock_init(&dev->sriov.alias_guid.ag_work_lock); | |
851 | ||
852 | for (i = 1; i <= dev->num_ports; ++i) { | |
853 | if (dev->ib_dev.query_gid(&dev->ib_dev , i, 0, &gid)) { | |
854 | ret = -EFAULT; | |
855 | goto err_unregister; | |
856 | } | |
857 | } | |
858 | ||
859 | for (i = 0 ; i < dev->num_ports; i++) { | |
860 | memset(&dev->sriov.alias_guid.ports_guid[i], 0, | |
861 | sizeof (struct mlx4_sriov_alias_guid_port_rec_det)); | |
f5479601 YH |
862 | dev->sriov.alias_guid.ports_guid[i].state_flags |= |
863 | GUID_STATE_NEED_PORT_INIT; | |
a0c64a17 | 864 | for (j = 0; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) { |
f5479601 YH |
865 | /* mark each val as it was deleted */ |
866 | memset(dev->sriov.alias_guid.ports_guid[i]. | |
867 | all_rec_per_port[j].all_recs, 0xFF, | |
868 | sizeof(dev->sriov.alias_guid.ports_guid[i]. | |
869 | all_rec_per_port[j].all_recs)); | |
a0c64a17 JM |
870 | } |
871 | INIT_LIST_HEAD(&dev->sriov.alias_guid.ports_guid[i].cb_list); | |
872 | /*prepare the records, set them to be allocated by sm*/ | |
f5479601 YH |
873 | if (mlx4_ib_sm_guid_assign) |
874 | for (j = 1; j < NUM_ALIAS_GUID_PER_PORT; j++) | |
875 | mlx4_set_admin_guid(dev->dev, 0, j, i + 1); | |
a0c64a17 JM |
876 | for (j = 0 ; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) |
877 | invalidate_guid_record(dev, i + 1, j); | |
878 | ||
879 | dev->sriov.alias_guid.ports_guid[i].parent = &dev->sriov.alias_guid; | |
880 | dev->sriov.alias_guid.ports_guid[i].port = i; | |
a0c64a17 JM |
881 | |
882 | snprintf(alias_wq_name, sizeof alias_wq_name, "alias_guid%d", i); | |
883 | dev->sriov.alias_guid.ports_guid[i].wq = | |
884 | create_singlethread_workqueue(alias_wq_name); | |
885 | if (!dev->sriov.alias_guid.ports_guid[i].wq) { | |
886 | ret = -ENOMEM; | |
887 | goto err_thread; | |
888 | } | |
889 | INIT_DELAYED_WORK(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work, | |
890 | alias_guid_work); | |
891 | } | |
892 | return 0; | |
893 | ||
894 | err_thread: | |
895 | for (--i; i >= 0; i--) { | |
896 | destroy_workqueue(dev->sriov.alias_guid.ports_guid[i].wq); | |
897 | dev->sriov.alias_guid.ports_guid[i].wq = NULL; | |
898 | } | |
899 | ||
900 | err_unregister: | |
901 | ib_sa_unregister_client(dev->sriov.alias_guid.sa_client); | |
902 | kfree(dev->sriov.alias_guid.sa_client); | |
903 | dev->sriov.alias_guid.sa_client = NULL; | |
904 | pr_err("init_alias_guid_service: Failed. (ret:%d)\n", ret); | |
905 | return ret; | |
906 | } |