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f931551b RC |
1 | /* |
2 | * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. | |
3 | * All rights reserved. | |
4 | * Copyright (c) 2005, 2006 PathScale, 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 | ||
35 | #include <rdma/ib_mad.h> | |
36 | #include <rdma/ib_user_verbs.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/utsname.h> | |
39 | #include <linux/rculist.h> | |
40 | #include <linux/mm.h> | |
41 | ||
42 | #include "qib.h" | |
43 | #include "qib_common.h" | |
44 | ||
45 | static unsigned int ib_qib_qp_table_size = 251; | |
46 | module_param_named(qp_table_size, ib_qib_qp_table_size, uint, S_IRUGO); | |
47 | MODULE_PARM_DESC(qp_table_size, "QP table size"); | |
48 | ||
49 | unsigned int ib_qib_lkey_table_size = 16; | |
50 | module_param_named(lkey_table_size, ib_qib_lkey_table_size, uint, | |
51 | S_IRUGO); | |
52 | MODULE_PARM_DESC(lkey_table_size, | |
53 | "LKEY table size in bits (2^n, 1 <= n <= 23)"); | |
54 | ||
55 | static unsigned int ib_qib_max_pds = 0xFFFF; | |
56 | module_param_named(max_pds, ib_qib_max_pds, uint, S_IRUGO); | |
57 | MODULE_PARM_DESC(max_pds, | |
58 | "Maximum number of protection domains to support"); | |
59 | ||
60 | static unsigned int ib_qib_max_ahs = 0xFFFF; | |
61 | module_param_named(max_ahs, ib_qib_max_ahs, uint, S_IRUGO); | |
62 | MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support"); | |
63 | ||
64 | unsigned int ib_qib_max_cqes = 0x2FFFF; | |
65 | module_param_named(max_cqes, ib_qib_max_cqes, uint, S_IRUGO); | |
66 | MODULE_PARM_DESC(max_cqes, | |
67 | "Maximum number of completion queue entries to support"); | |
68 | ||
69 | unsigned int ib_qib_max_cqs = 0x1FFFF; | |
70 | module_param_named(max_cqs, ib_qib_max_cqs, uint, S_IRUGO); | |
71 | MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support"); | |
72 | ||
73 | unsigned int ib_qib_max_qp_wrs = 0x3FFF; | |
74 | module_param_named(max_qp_wrs, ib_qib_max_qp_wrs, uint, S_IRUGO); | |
75 | MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support"); | |
76 | ||
77 | unsigned int ib_qib_max_qps = 16384; | |
78 | module_param_named(max_qps, ib_qib_max_qps, uint, S_IRUGO); | |
79 | MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support"); | |
80 | ||
81 | unsigned int ib_qib_max_sges = 0x60; | |
82 | module_param_named(max_sges, ib_qib_max_sges, uint, S_IRUGO); | |
83 | MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support"); | |
84 | ||
85 | unsigned int ib_qib_max_mcast_grps = 16384; | |
86 | module_param_named(max_mcast_grps, ib_qib_max_mcast_grps, uint, S_IRUGO); | |
87 | MODULE_PARM_DESC(max_mcast_grps, | |
88 | "Maximum number of multicast groups to support"); | |
89 | ||
90 | unsigned int ib_qib_max_mcast_qp_attached = 16; | |
91 | module_param_named(max_mcast_qp_attached, ib_qib_max_mcast_qp_attached, | |
92 | uint, S_IRUGO); | |
93 | MODULE_PARM_DESC(max_mcast_qp_attached, | |
94 | "Maximum number of attached QPs to support"); | |
95 | ||
96 | unsigned int ib_qib_max_srqs = 1024; | |
97 | module_param_named(max_srqs, ib_qib_max_srqs, uint, S_IRUGO); | |
98 | MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support"); | |
99 | ||
100 | unsigned int ib_qib_max_srq_sges = 128; | |
101 | module_param_named(max_srq_sges, ib_qib_max_srq_sges, uint, S_IRUGO); | |
102 | MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support"); | |
103 | ||
104 | unsigned int ib_qib_max_srq_wrs = 0x1FFFF; | |
105 | module_param_named(max_srq_wrs, ib_qib_max_srq_wrs, uint, S_IRUGO); | |
106 | MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support"); | |
107 | ||
108 | static unsigned int ib_qib_disable_sma; | |
109 | module_param_named(disable_sma, ib_qib_disable_sma, uint, S_IWUSR | S_IRUGO); | |
110 | MODULE_PARM_DESC(disable_sma, "Disable the SMA"); | |
111 | ||
112 | /* | |
113 | * Note that it is OK to post send work requests in the SQE and ERR | |
114 | * states; qib_do_send() will process them and generate error | |
115 | * completions as per IB 1.2 C10-96. | |
116 | */ | |
117 | const int ib_qib_state_ops[IB_QPS_ERR + 1] = { | |
118 | [IB_QPS_RESET] = 0, | |
119 | [IB_QPS_INIT] = QIB_POST_RECV_OK, | |
120 | [IB_QPS_RTR] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK, | |
121 | [IB_QPS_RTS] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK | | |
122 | QIB_POST_SEND_OK | QIB_PROCESS_SEND_OK | | |
123 | QIB_PROCESS_NEXT_SEND_OK, | |
124 | [IB_QPS_SQD] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK | | |
125 | QIB_POST_SEND_OK | QIB_PROCESS_SEND_OK, | |
126 | [IB_QPS_SQE] = QIB_POST_RECV_OK | QIB_PROCESS_RECV_OK | | |
127 | QIB_POST_SEND_OK | QIB_FLUSH_SEND, | |
128 | [IB_QPS_ERR] = QIB_POST_RECV_OK | QIB_FLUSH_RECV | | |
129 | QIB_POST_SEND_OK | QIB_FLUSH_SEND, | |
130 | }; | |
131 | ||
132 | struct qib_ucontext { | |
133 | struct ib_ucontext ibucontext; | |
134 | }; | |
135 | ||
136 | static inline struct qib_ucontext *to_iucontext(struct ib_ucontext | |
137 | *ibucontext) | |
138 | { | |
139 | return container_of(ibucontext, struct qib_ucontext, ibucontext); | |
140 | } | |
141 | ||
142 | /* | |
143 | * Translate ib_wr_opcode into ib_wc_opcode. | |
144 | */ | |
145 | const enum ib_wc_opcode ib_qib_wc_opcode[] = { | |
146 | [IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE, | |
147 | [IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE, | |
148 | [IB_WR_SEND] = IB_WC_SEND, | |
149 | [IB_WR_SEND_WITH_IMM] = IB_WC_SEND, | |
150 | [IB_WR_RDMA_READ] = IB_WC_RDMA_READ, | |
151 | [IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP, | |
152 | [IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD | |
153 | }; | |
154 | ||
155 | /* | |
156 | * System image GUID. | |
157 | */ | |
158 | __be64 ib_qib_sys_image_guid; | |
159 | ||
160 | /** | |
161 | * qib_copy_sge - copy data to SGE memory | |
162 | * @ss: the SGE state | |
163 | * @data: the data to copy | |
164 | * @length: the length of the data | |
165 | */ | |
166 | void qib_copy_sge(struct qib_sge_state *ss, void *data, u32 length, int release) | |
167 | { | |
168 | struct qib_sge *sge = &ss->sge; | |
169 | ||
170 | while (length) { | |
171 | u32 len = sge->length; | |
172 | ||
173 | if (len > length) | |
174 | len = length; | |
175 | if (len > sge->sge_length) | |
176 | len = sge->sge_length; | |
177 | BUG_ON(len == 0); | |
178 | memcpy(sge->vaddr, data, len); | |
179 | sge->vaddr += len; | |
180 | sge->length -= len; | |
181 | sge->sge_length -= len; | |
182 | if (sge->sge_length == 0) { | |
183 | if (release) | |
184 | atomic_dec(&sge->mr->refcount); | |
185 | if (--ss->num_sge) | |
186 | *sge = *ss->sg_list++; | |
187 | } else if (sge->length == 0 && sge->mr->lkey) { | |
188 | if (++sge->n >= QIB_SEGSZ) { | |
189 | if (++sge->m >= sge->mr->mapsz) | |
190 | break; | |
191 | sge->n = 0; | |
192 | } | |
193 | sge->vaddr = | |
194 | sge->mr->map[sge->m]->segs[sge->n].vaddr; | |
195 | sge->length = | |
196 | sge->mr->map[sge->m]->segs[sge->n].length; | |
197 | } | |
198 | data += len; | |
199 | length -= len; | |
200 | } | |
201 | } | |
202 | ||
203 | /** | |
204 | * qib_skip_sge - skip over SGE memory - XXX almost dup of prev func | |
205 | * @ss: the SGE state | |
206 | * @length: the number of bytes to skip | |
207 | */ | |
208 | void qib_skip_sge(struct qib_sge_state *ss, u32 length, int release) | |
209 | { | |
210 | struct qib_sge *sge = &ss->sge; | |
211 | ||
212 | while (length) { | |
213 | u32 len = sge->length; | |
214 | ||
215 | if (len > length) | |
216 | len = length; | |
217 | if (len > sge->sge_length) | |
218 | len = sge->sge_length; | |
219 | BUG_ON(len == 0); | |
220 | sge->vaddr += len; | |
221 | sge->length -= len; | |
222 | sge->sge_length -= len; | |
223 | if (sge->sge_length == 0) { | |
224 | if (release) | |
225 | atomic_dec(&sge->mr->refcount); | |
226 | if (--ss->num_sge) | |
227 | *sge = *ss->sg_list++; | |
228 | } else if (sge->length == 0 && sge->mr->lkey) { | |
229 | if (++sge->n >= QIB_SEGSZ) { | |
230 | if (++sge->m >= sge->mr->mapsz) | |
231 | break; | |
232 | sge->n = 0; | |
233 | } | |
234 | sge->vaddr = | |
235 | sge->mr->map[sge->m]->segs[sge->n].vaddr; | |
236 | sge->length = | |
237 | sge->mr->map[sge->m]->segs[sge->n].length; | |
238 | } | |
239 | length -= len; | |
240 | } | |
241 | } | |
242 | ||
243 | /* | |
244 | * Count the number of DMA descriptors needed to send length bytes of data. | |
245 | * Don't modify the qib_sge_state to get the count. | |
246 | * Return zero if any of the segments is not aligned. | |
247 | */ | |
248 | static u32 qib_count_sge(struct qib_sge_state *ss, u32 length) | |
249 | { | |
250 | struct qib_sge *sg_list = ss->sg_list; | |
251 | struct qib_sge sge = ss->sge; | |
252 | u8 num_sge = ss->num_sge; | |
253 | u32 ndesc = 1; /* count the header */ | |
254 | ||
255 | while (length) { | |
256 | u32 len = sge.length; | |
257 | ||
258 | if (len > length) | |
259 | len = length; | |
260 | if (len > sge.sge_length) | |
261 | len = sge.sge_length; | |
262 | BUG_ON(len == 0); | |
263 | if (((long) sge.vaddr & (sizeof(u32) - 1)) || | |
264 | (len != length && (len & (sizeof(u32) - 1)))) { | |
265 | ndesc = 0; | |
266 | break; | |
267 | } | |
268 | ndesc++; | |
269 | sge.vaddr += len; | |
270 | sge.length -= len; | |
271 | sge.sge_length -= len; | |
272 | if (sge.sge_length == 0) { | |
273 | if (--num_sge) | |
274 | sge = *sg_list++; | |
275 | } else if (sge.length == 0 && sge.mr->lkey) { | |
276 | if (++sge.n >= QIB_SEGSZ) { | |
277 | if (++sge.m >= sge.mr->mapsz) | |
278 | break; | |
279 | sge.n = 0; | |
280 | } | |
281 | sge.vaddr = | |
282 | sge.mr->map[sge.m]->segs[sge.n].vaddr; | |
283 | sge.length = | |
284 | sge.mr->map[sge.m]->segs[sge.n].length; | |
285 | } | |
286 | length -= len; | |
287 | } | |
288 | return ndesc; | |
289 | } | |
290 | ||
291 | /* | |
292 | * Copy from the SGEs to the data buffer. | |
293 | */ | |
294 | static void qib_copy_from_sge(void *data, struct qib_sge_state *ss, u32 length) | |
295 | { | |
296 | struct qib_sge *sge = &ss->sge; | |
297 | ||
298 | while (length) { | |
299 | u32 len = sge->length; | |
300 | ||
301 | if (len > length) | |
302 | len = length; | |
303 | if (len > sge->sge_length) | |
304 | len = sge->sge_length; | |
305 | BUG_ON(len == 0); | |
306 | memcpy(data, sge->vaddr, len); | |
307 | sge->vaddr += len; | |
308 | sge->length -= len; | |
309 | sge->sge_length -= len; | |
310 | if (sge->sge_length == 0) { | |
311 | if (--ss->num_sge) | |
312 | *sge = *ss->sg_list++; | |
313 | } else if (sge->length == 0 && sge->mr->lkey) { | |
314 | if (++sge->n >= QIB_SEGSZ) { | |
315 | if (++sge->m >= sge->mr->mapsz) | |
316 | break; | |
317 | sge->n = 0; | |
318 | } | |
319 | sge->vaddr = | |
320 | sge->mr->map[sge->m]->segs[sge->n].vaddr; | |
321 | sge->length = | |
322 | sge->mr->map[sge->m]->segs[sge->n].length; | |
323 | } | |
324 | data += len; | |
325 | length -= len; | |
326 | } | |
327 | } | |
328 | ||
329 | /** | |
330 | * qib_post_one_send - post one RC, UC, or UD send work request | |
331 | * @qp: the QP to post on | |
332 | * @wr: the work request to send | |
333 | */ | |
334 | static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr) | |
335 | { | |
336 | struct qib_swqe *wqe; | |
337 | u32 next; | |
338 | int i; | |
339 | int j; | |
340 | int acc; | |
341 | int ret; | |
342 | unsigned long flags; | |
343 | struct qib_lkey_table *rkt; | |
344 | struct qib_pd *pd; | |
345 | ||
346 | spin_lock_irqsave(&qp->s_lock, flags); | |
347 | ||
348 | /* Check that state is OK to post send. */ | |
349 | if (unlikely(!(ib_qib_state_ops[qp->state] & QIB_POST_SEND_OK))) | |
350 | goto bail_inval; | |
351 | ||
352 | /* IB spec says that num_sge == 0 is OK. */ | |
353 | if (wr->num_sge > qp->s_max_sge) | |
354 | goto bail_inval; | |
355 | ||
356 | /* | |
357 | * Don't allow RDMA reads or atomic operations on UC or | |
358 | * undefined operations. | |
359 | * Make sure buffer is large enough to hold the result for atomics. | |
360 | */ | |
361 | if (wr->opcode == IB_WR_FAST_REG_MR) { | |
362 | if (qib_fast_reg_mr(qp, wr)) | |
363 | goto bail_inval; | |
364 | } else if (qp->ibqp.qp_type == IB_QPT_UC) { | |
365 | if ((unsigned) wr->opcode >= IB_WR_RDMA_READ) | |
366 | goto bail_inval; | |
367 | } else if (qp->ibqp.qp_type != IB_QPT_RC) { | |
368 | /* Check IB_QPT_SMI, IB_QPT_GSI, IB_QPT_UD opcode */ | |
369 | if (wr->opcode != IB_WR_SEND && | |
370 | wr->opcode != IB_WR_SEND_WITH_IMM) | |
371 | goto bail_inval; | |
372 | /* Check UD destination address PD */ | |
373 | if (qp->ibqp.pd != wr->wr.ud.ah->pd) | |
374 | goto bail_inval; | |
375 | } else if ((unsigned) wr->opcode > IB_WR_ATOMIC_FETCH_AND_ADD) | |
376 | goto bail_inval; | |
377 | else if (wr->opcode >= IB_WR_ATOMIC_CMP_AND_SWP && | |
378 | (wr->num_sge == 0 || | |
379 | wr->sg_list[0].length < sizeof(u64) || | |
380 | wr->sg_list[0].addr & (sizeof(u64) - 1))) | |
381 | goto bail_inval; | |
382 | else if (wr->opcode >= IB_WR_RDMA_READ && !qp->s_max_rd_atomic) | |
383 | goto bail_inval; | |
384 | ||
385 | next = qp->s_head + 1; | |
386 | if (next >= qp->s_size) | |
387 | next = 0; | |
388 | if (next == qp->s_last) { | |
389 | ret = -ENOMEM; | |
390 | goto bail; | |
391 | } | |
392 | ||
393 | rkt = &to_idev(qp->ibqp.device)->lk_table; | |
394 | pd = to_ipd(qp->ibqp.pd); | |
395 | wqe = get_swqe_ptr(qp, qp->s_head); | |
396 | wqe->wr = *wr; | |
397 | wqe->length = 0; | |
398 | j = 0; | |
399 | if (wr->num_sge) { | |
400 | acc = wr->opcode >= IB_WR_RDMA_READ ? | |
401 | IB_ACCESS_LOCAL_WRITE : 0; | |
402 | for (i = 0; i < wr->num_sge; i++) { | |
403 | u32 length = wr->sg_list[i].length; | |
404 | int ok; | |
405 | ||
406 | if (length == 0) | |
407 | continue; | |
408 | ok = qib_lkey_ok(rkt, pd, &wqe->sg_list[j], | |
409 | &wr->sg_list[i], acc); | |
410 | if (!ok) | |
411 | goto bail_inval_free; | |
412 | wqe->length += length; | |
413 | j++; | |
414 | } | |
415 | wqe->wr.num_sge = j; | |
416 | } | |
417 | if (qp->ibqp.qp_type == IB_QPT_UC || | |
418 | qp->ibqp.qp_type == IB_QPT_RC) { | |
419 | if (wqe->length > 0x80000000U) | |
420 | goto bail_inval_free; | |
421 | } else if (wqe->length > (dd_from_ibdev(qp->ibqp.device)->pport + | |
422 | qp->port_num - 1)->ibmtu) | |
423 | goto bail_inval_free; | |
424 | else | |
425 | atomic_inc(&to_iah(wr->wr.ud.ah)->refcount); | |
426 | wqe->ssn = qp->s_ssn++; | |
427 | qp->s_head = next; | |
428 | ||
429 | ret = 0; | |
430 | goto bail; | |
431 | ||
432 | bail_inval_free: | |
433 | while (j) { | |
434 | struct qib_sge *sge = &wqe->sg_list[--j]; | |
435 | ||
436 | atomic_dec(&sge->mr->refcount); | |
437 | } | |
438 | bail_inval: | |
439 | ret = -EINVAL; | |
440 | bail: | |
441 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
442 | return ret; | |
443 | } | |
444 | ||
445 | /** | |
446 | * qib_post_send - post a send on a QP | |
447 | * @ibqp: the QP to post the send on | |
448 | * @wr: the list of work requests to post | |
449 | * @bad_wr: the first bad WR is put here | |
450 | * | |
451 | * This may be called from interrupt context. | |
452 | */ | |
453 | static int qib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, | |
454 | struct ib_send_wr **bad_wr) | |
455 | { | |
456 | struct qib_qp *qp = to_iqp(ibqp); | |
457 | int err = 0; | |
458 | ||
459 | for (; wr; wr = wr->next) { | |
460 | err = qib_post_one_send(qp, wr); | |
461 | if (err) { | |
462 | *bad_wr = wr; | |
463 | goto bail; | |
464 | } | |
465 | } | |
466 | ||
467 | /* Try to do the send work in the caller's context. */ | |
468 | qib_do_send(&qp->s_work); | |
469 | ||
470 | bail: | |
471 | return err; | |
472 | } | |
473 | ||
474 | /** | |
475 | * qib_post_receive - post a receive on a QP | |
476 | * @ibqp: the QP to post the receive on | |
477 | * @wr: the WR to post | |
478 | * @bad_wr: the first bad WR is put here | |
479 | * | |
480 | * This may be called from interrupt context. | |
481 | */ | |
482 | static int qib_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
483 | struct ib_recv_wr **bad_wr) | |
484 | { | |
485 | struct qib_qp *qp = to_iqp(ibqp); | |
486 | struct qib_rwq *wq = qp->r_rq.wq; | |
487 | unsigned long flags; | |
488 | int ret; | |
489 | ||
490 | /* Check that state is OK to post receive. */ | |
491 | if (!(ib_qib_state_ops[qp->state] & QIB_POST_RECV_OK) || !wq) { | |
492 | *bad_wr = wr; | |
493 | ret = -EINVAL; | |
494 | goto bail; | |
495 | } | |
496 | ||
497 | for (; wr; wr = wr->next) { | |
498 | struct qib_rwqe *wqe; | |
499 | u32 next; | |
500 | int i; | |
501 | ||
502 | if ((unsigned) wr->num_sge > qp->r_rq.max_sge) { | |
503 | *bad_wr = wr; | |
504 | ret = -EINVAL; | |
505 | goto bail; | |
506 | } | |
507 | ||
508 | spin_lock_irqsave(&qp->r_rq.lock, flags); | |
509 | next = wq->head + 1; | |
510 | if (next >= qp->r_rq.size) | |
511 | next = 0; | |
512 | if (next == wq->tail) { | |
513 | spin_unlock_irqrestore(&qp->r_rq.lock, flags); | |
514 | *bad_wr = wr; | |
515 | ret = -ENOMEM; | |
516 | goto bail; | |
517 | } | |
518 | ||
519 | wqe = get_rwqe_ptr(&qp->r_rq, wq->head); | |
520 | wqe->wr_id = wr->wr_id; | |
521 | wqe->num_sge = wr->num_sge; | |
522 | for (i = 0; i < wr->num_sge; i++) | |
523 | wqe->sg_list[i] = wr->sg_list[i]; | |
524 | /* Make sure queue entry is written before the head index. */ | |
525 | smp_wmb(); | |
526 | wq->head = next; | |
527 | spin_unlock_irqrestore(&qp->r_rq.lock, flags); | |
528 | } | |
529 | ret = 0; | |
530 | ||
531 | bail: | |
532 | return ret; | |
533 | } | |
534 | ||
535 | /** | |
536 | * qib_qp_rcv - processing an incoming packet on a QP | |
537 | * @rcd: the context pointer | |
538 | * @hdr: the packet header | |
539 | * @has_grh: true if the packet has a GRH | |
540 | * @data: the packet data | |
541 | * @tlen: the packet length | |
542 | * @qp: the QP the packet came on | |
543 | * | |
544 | * This is called from qib_ib_rcv() to process an incoming packet | |
545 | * for the given QP. | |
546 | * Called at interrupt level. | |
547 | */ | |
548 | static void qib_qp_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, | |
549 | int has_grh, void *data, u32 tlen, struct qib_qp *qp) | |
550 | { | |
551 | struct qib_ibport *ibp = &rcd->ppd->ibport_data; | |
552 | ||
a5210c12 RC |
553 | spin_lock(&qp->r_lock); |
554 | ||
f931551b RC |
555 | /* Check for valid receive state. */ |
556 | if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) { | |
557 | ibp->n_pkt_drops++; | |
a5210c12 | 558 | goto unlock; |
f931551b RC |
559 | } |
560 | ||
561 | switch (qp->ibqp.qp_type) { | |
562 | case IB_QPT_SMI: | |
563 | case IB_QPT_GSI: | |
564 | if (ib_qib_disable_sma) | |
565 | break; | |
566 | /* FALLTHROUGH */ | |
567 | case IB_QPT_UD: | |
568 | qib_ud_rcv(ibp, hdr, has_grh, data, tlen, qp); | |
569 | break; | |
570 | ||
571 | case IB_QPT_RC: | |
572 | qib_rc_rcv(rcd, hdr, has_grh, data, tlen, qp); | |
573 | break; | |
574 | ||
575 | case IB_QPT_UC: | |
576 | qib_uc_rcv(ibp, hdr, has_grh, data, tlen, qp); | |
577 | break; | |
578 | ||
579 | default: | |
580 | break; | |
581 | } | |
a5210c12 RC |
582 | |
583 | unlock: | |
584 | spin_unlock(&qp->r_lock); | |
f931551b RC |
585 | } |
586 | ||
587 | /** | |
588 | * qib_ib_rcv - process an incoming packet | |
589 | * @rcd: the context pointer | |
590 | * @rhdr: the header of the packet | |
591 | * @data: the packet payload | |
592 | * @tlen: the packet length | |
593 | * | |
594 | * This is called from qib_kreceive() to process an incoming packet at | |
595 | * interrupt level. Tlen is the length of the header + data + CRC in bytes. | |
596 | */ | |
597 | void qib_ib_rcv(struct qib_ctxtdata *rcd, void *rhdr, void *data, u32 tlen) | |
598 | { | |
599 | struct qib_pportdata *ppd = rcd->ppd; | |
600 | struct qib_ibport *ibp = &ppd->ibport_data; | |
601 | struct qib_ib_header *hdr = rhdr; | |
602 | struct qib_other_headers *ohdr; | |
603 | struct qib_qp *qp; | |
604 | u32 qp_num; | |
605 | int lnh; | |
606 | u8 opcode; | |
607 | u16 lid; | |
608 | ||
609 | /* 24 == LRH+BTH+CRC */ | |
610 | if (unlikely(tlen < 24)) | |
611 | goto drop; | |
612 | ||
613 | /* Check for a valid destination LID (see ch. 7.11.1). */ | |
614 | lid = be16_to_cpu(hdr->lrh[1]); | |
615 | if (lid < QIB_MULTICAST_LID_BASE) { | |
616 | lid &= ~((1 << ppd->lmc) - 1); | |
617 | if (unlikely(lid != ppd->lid)) | |
618 | goto drop; | |
619 | } | |
620 | ||
621 | /* Check for GRH */ | |
622 | lnh = be16_to_cpu(hdr->lrh[0]) & 3; | |
623 | if (lnh == QIB_LRH_BTH) | |
624 | ohdr = &hdr->u.oth; | |
625 | else if (lnh == QIB_LRH_GRH) { | |
626 | u32 vtf; | |
627 | ||
628 | ohdr = &hdr->u.l.oth; | |
629 | if (hdr->u.l.grh.next_hdr != IB_GRH_NEXT_HDR) | |
630 | goto drop; | |
631 | vtf = be32_to_cpu(hdr->u.l.grh.version_tclass_flow); | |
632 | if ((vtf >> IB_GRH_VERSION_SHIFT) != IB_GRH_VERSION) | |
633 | goto drop; | |
634 | } else | |
635 | goto drop; | |
636 | ||
637 | opcode = be32_to_cpu(ohdr->bth[0]) >> 24; | |
638 | ibp->opstats[opcode & 0x7f].n_bytes += tlen; | |
639 | ibp->opstats[opcode & 0x7f].n_packets++; | |
640 | ||
641 | /* Get the destination QP number. */ | |
642 | qp_num = be32_to_cpu(ohdr->bth[1]) & QIB_QPN_MASK; | |
643 | if (qp_num == QIB_MULTICAST_QPN) { | |
644 | struct qib_mcast *mcast; | |
645 | struct qib_mcast_qp *p; | |
646 | ||
647 | if (lnh != QIB_LRH_GRH) | |
648 | goto drop; | |
649 | mcast = qib_mcast_find(ibp, &hdr->u.l.grh.dgid); | |
650 | if (mcast == NULL) | |
651 | goto drop; | |
652 | ibp->n_multicast_rcv++; | |
653 | list_for_each_entry_rcu(p, &mcast->qp_list, list) | |
654 | qib_qp_rcv(rcd, hdr, 1, data, tlen, p->qp); | |
655 | /* | |
656 | * Notify qib_multicast_detach() if it is waiting for us | |
657 | * to finish. | |
658 | */ | |
659 | if (atomic_dec_return(&mcast->refcount) <= 1) | |
660 | wake_up(&mcast->wait); | |
661 | } else { | |
662 | qp = qib_lookup_qpn(ibp, qp_num); | |
663 | if (!qp) | |
664 | goto drop; | |
665 | ibp->n_unicast_rcv++; | |
666 | qib_qp_rcv(rcd, hdr, lnh == QIB_LRH_GRH, data, tlen, qp); | |
667 | /* | |
668 | * Notify qib_destroy_qp() if it is waiting | |
669 | * for us to finish. | |
670 | */ | |
671 | if (atomic_dec_and_test(&qp->refcount)) | |
672 | wake_up(&qp->wait); | |
673 | } | |
674 | return; | |
675 | ||
676 | drop: | |
677 | ibp->n_pkt_drops++; | |
678 | } | |
679 | ||
680 | /* | |
681 | * This is called from a timer to check for QPs | |
682 | * which need kernel memory in order to send a packet. | |
683 | */ | |
684 | static void mem_timer(unsigned long data) | |
685 | { | |
686 | struct qib_ibdev *dev = (struct qib_ibdev *) data; | |
687 | struct list_head *list = &dev->memwait; | |
688 | struct qib_qp *qp = NULL; | |
689 | unsigned long flags; | |
690 | ||
691 | spin_lock_irqsave(&dev->pending_lock, flags); | |
692 | if (!list_empty(list)) { | |
693 | qp = list_entry(list->next, struct qib_qp, iowait); | |
694 | list_del_init(&qp->iowait); | |
695 | atomic_inc(&qp->refcount); | |
696 | if (!list_empty(list)) | |
697 | mod_timer(&dev->mem_timer, jiffies + 1); | |
698 | } | |
699 | spin_unlock_irqrestore(&dev->pending_lock, flags); | |
700 | ||
701 | if (qp) { | |
702 | spin_lock_irqsave(&qp->s_lock, flags); | |
703 | if (qp->s_flags & QIB_S_WAIT_KMEM) { | |
704 | qp->s_flags &= ~QIB_S_WAIT_KMEM; | |
705 | qib_schedule_send(qp); | |
706 | } | |
707 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
708 | if (atomic_dec_and_test(&qp->refcount)) | |
709 | wake_up(&qp->wait); | |
710 | } | |
711 | } | |
712 | ||
713 | static void update_sge(struct qib_sge_state *ss, u32 length) | |
714 | { | |
715 | struct qib_sge *sge = &ss->sge; | |
716 | ||
717 | sge->vaddr += length; | |
718 | sge->length -= length; | |
719 | sge->sge_length -= length; | |
720 | if (sge->sge_length == 0) { | |
721 | if (--ss->num_sge) | |
722 | *sge = *ss->sg_list++; | |
723 | } else if (sge->length == 0 && sge->mr->lkey) { | |
724 | if (++sge->n >= QIB_SEGSZ) { | |
725 | if (++sge->m >= sge->mr->mapsz) | |
726 | return; | |
727 | sge->n = 0; | |
728 | } | |
729 | sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr; | |
730 | sge->length = sge->mr->map[sge->m]->segs[sge->n].length; | |
731 | } | |
732 | } | |
733 | ||
734 | #ifdef __LITTLE_ENDIAN | |
735 | static inline u32 get_upper_bits(u32 data, u32 shift) | |
736 | { | |
737 | return data >> shift; | |
738 | } | |
739 | ||
740 | static inline u32 set_upper_bits(u32 data, u32 shift) | |
741 | { | |
742 | return data << shift; | |
743 | } | |
744 | ||
745 | static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) | |
746 | { | |
747 | data <<= ((sizeof(u32) - n) * BITS_PER_BYTE); | |
748 | data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE); | |
749 | return data; | |
750 | } | |
751 | #else | |
752 | static inline u32 get_upper_bits(u32 data, u32 shift) | |
753 | { | |
754 | return data << shift; | |
755 | } | |
756 | ||
757 | static inline u32 set_upper_bits(u32 data, u32 shift) | |
758 | { | |
759 | return data >> shift; | |
760 | } | |
761 | ||
762 | static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off) | |
763 | { | |
764 | data >>= ((sizeof(u32) - n) * BITS_PER_BYTE); | |
765 | data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE); | |
766 | return data; | |
767 | } | |
768 | #endif | |
769 | ||
770 | static void copy_io(u32 __iomem *piobuf, struct qib_sge_state *ss, | |
771 | u32 length, unsigned flush_wc) | |
772 | { | |
773 | u32 extra = 0; | |
774 | u32 data = 0; | |
775 | u32 last; | |
776 | ||
777 | while (1) { | |
778 | u32 len = ss->sge.length; | |
779 | u32 off; | |
780 | ||
781 | if (len > length) | |
782 | len = length; | |
783 | if (len > ss->sge.sge_length) | |
784 | len = ss->sge.sge_length; | |
785 | BUG_ON(len == 0); | |
786 | /* If the source address is not aligned, try to align it. */ | |
787 | off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1); | |
788 | if (off) { | |
789 | u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr & | |
790 | ~(sizeof(u32) - 1)); | |
791 | u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE); | |
792 | u32 y; | |
793 | ||
794 | y = sizeof(u32) - off; | |
795 | if (len > y) | |
796 | len = y; | |
797 | if (len + extra >= sizeof(u32)) { | |
798 | data |= set_upper_bits(v, extra * | |
799 | BITS_PER_BYTE); | |
800 | len = sizeof(u32) - extra; | |
801 | if (len == length) { | |
802 | last = data; | |
803 | break; | |
804 | } | |
805 | __raw_writel(data, piobuf); | |
806 | piobuf++; | |
807 | extra = 0; | |
808 | data = 0; | |
809 | } else { | |
810 | /* Clear unused upper bytes */ | |
811 | data |= clear_upper_bytes(v, len, extra); | |
812 | if (len == length) { | |
813 | last = data; | |
814 | break; | |
815 | } | |
816 | extra += len; | |
817 | } | |
818 | } else if (extra) { | |
819 | /* Source address is aligned. */ | |
820 | u32 *addr = (u32 *) ss->sge.vaddr; | |
821 | int shift = extra * BITS_PER_BYTE; | |
822 | int ushift = 32 - shift; | |
823 | u32 l = len; | |
824 | ||
825 | while (l >= sizeof(u32)) { | |
826 | u32 v = *addr; | |
827 | ||
828 | data |= set_upper_bits(v, shift); | |
829 | __raw_writel(data, piobuf); | |
830 | data = get_upper_bits(v, ushift); | |
831 | piobuf++; | |
832 | addr++; | |
833 | l -= sizeof(u32); | |
834 | } | |
835 | /* | |
836 | * We still have 'extra' number of bytes leftover. | |
837 | */ | |
838 | if (l) { | |
839 | u32 v = *addr; | |
840 | ||
841 | if (l + extra >= sizeof(u32)) { | |
842 | data |= set_upper_bits(v, shift); | |
843 | len -= l + extra - sizeof(u32); | |
844 | if (len == length) { | |
845 | last = data; | |
846 | break; | |
847 | } | |
848 | __raw_writel(data, piobuf); | |
849 | piobuf++; | |
850 | extra = 0; | |
851 | data = 0; | |
852 | } else { | |
853 | /* Clear unused upper bytes */ | |
854 | data |= clear_upper_bytes(v, l, extra); | |
855 | if (len == length) { | |
856 | last = data; | |
857 | break; | |
858 | } | |
859 | extra += l; | |
860 | } | |
861 | } else if (len == length) { | |
862 | last = data; | |
863 | break; | |
864 | } | |
865 | } else if (len == length) { | |
866 | u32 w; | |
867 | ||
868 | /* | |
869 | * Need to round up for the last dword in the | |
870 | * packet. | |
871 | */ | |
872 | w = (len + 3) >> 2; | |
873 | qib_pio_copy(piobuf, ss->sge.vaddr, w - 1); | |
874 | piobuf += w - 1; | |
875 | last = ((u32 *) ss->sge.vaddr)[w - 1]; | |
876 | break; | |
877 | } else { | |
878 | u32 w = len >> 2; | |
879 | ||
880 | qib_pio_copy(piobuf, ss->sge.vaddr, w); | |
881 | piobuf += w; | |
882 | ||
883 | extra = len & (sizeof(u32) - 1); | |
884 | if (extra) { | |
885 | u32 v = ((u32 *) ss->sge.vaddr)[w]; | |
886 | ||
887 | /* Clear unused upper bytes */ | |
888 | data = clear_upper_bytes(v, extra, 0); | |
889 | } | |
890 | } | |
891 | update_sge(ss, len); | |
892 | length -= len; | |
893 | } | |
894 | /* Update address before sending packet. */ | |
895 | update_sge(ss, length); | |
896 | if (flush_wc) { | |
897 | /* must flush early everything before trigger word */ | |
898 | qib_flush_wc(); | |
899 | __raw_writel(last, piobuf); | |
900 | /* be sure trigger word is written */ | |
901 | qib_flush_wc(); | |
902 | } else | |
903 | __raw_writel(last, piobuf); | |
904 | } | |
905 | ||
906 | static struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev, | |
907 | struct qib_qp *qp, int *retp) | |
908 | { | |
909 | struct qib_verbs_txreq *tx; | |
910 | unsigned long flags; | |
911 | ||
912 | spin_lock_irqsave(&qp->s_lock, flags); | |
913 | spin_lock(&dev->pending_lock); | |
914 | ||
915 | if (!list_empty(&dev->txreq_free)) { | |
916 | struct list_head *l = dev->txreq_free.next; | |
917 | ||
918 | list_del(l); | |
919 | tx = list_entry(l, struct qib_verbs_txreq, txreq.list); | |
920 | *retp = 0; | |
921 | } else { | |
922 | if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK && | |
923 | list_empty(&qp->iowait)) { | |
924 | dev->n_txwait++; | |
925 | qp->s_flags |= QIB_S_WAIT_TX; | |
926 | list_add_tail(&qp->iowait, &dev->txwait); | |
927 | } | |
928 | tx = NULL; | |
929 | qp->s_flags &= ~QIB_S_BUSY; | |
930 | *retp = -EBUSY; | |
931 | } | |
932 | ||
933 | spin_unlock(&dev->pending_lock); | |
934 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
935 | ||
936 | return tx; | |
937 | } | |
938 | ||
939 | void qib_put_txreq(struct qib_verbs_txreq *tx) | |
940 | { | |
941 | struct qib_ibdev *dev; | |
942 | struct qib_qp *qp; | |
943 | unsigned long flags; | |
944 | ||
945 | qp = tx->qp; | |
946 | dev = to_idev(qp->ibqp.device); | |
947 | ||
948 | if (atomic_dec_and_test(&qp->refcount)) | |
949 | wake_up(&qp->wait); | |
950 | if (tx->mr) { | |
951 | atomic_dec(&tx->mr->refcount); | |
952 | tx->mr = NULL; | |
953 | } | |
954 | if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF) { | |
955 | tx->txreq.flags &= ~QIB_SDMA_TXREQ_F_FREEBUF; | |
956 | dma_unmap_single(&dd_from_dev(dev)->pcidev->dev, | |
957 | tx->txreq.addr, tx->hdr_dwords << 2, | |
958 | DMA_TO_DEVICE); | |
959 | kfree(tx->align_buf); | |
960 | } | |
961 | ||
962 | spin_lock_irqsave(&dev->pending_lock, flags); | |
963 | ||
964 | /* Put struct back on free list */ | |
965 | list_add(&tx->txreq.list, &dev->txreq_free); | |
966 | ||
967 | if (!list_empty(&dev->txwait)) { | |
968 | /* Wake up first QP wanting a free struct */ | |
969 | qp = list_entry(dev->txwait.next, struct qib_qp, iowait); | |
970 | list_del_init(&qp->iowait); | |
971 | atomic_inc(&qp->refcount); | |
972 | spin_unlock_irqrestore(&dev->pending_lock, flags); | |
973 | ||
974 | spin_lock_irqsave(&qp->s_lock, flags); | |
975 | if (qp->s_flags & QIB_S_WAIT_TX) { | |
976 | qp->s_flags &= ~QIB_S_WAIT_TX; | |
977 | qib_schedule_send(qp); | |
978 | } | |
979 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
980 | ||
981 | if (atomic_dec_and_test(&qp->refcount)) | |
982 | wake_up(&qp->wait); | |
983 | } else | |
984 | spin_unlock_irqrestore(&dev->pending_lock, flags); | |
985 | } | |
986 | ||
987 | /* | |
988 | * This is called when there are send DMA descriptors that might be | |
989 | * available. | |
990 | * | |
991 | * This is called with ppd->sdma_lock held. | |
992 | */ | |
993 | void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail) | |
994 | { | |
995 | struct qib_qp *qp, *nqp; | |
996 | struct qib_qp *qps[20]; | |
997 | struct qib_ibdev *dev; | |
998 | unsigned i, n; | |
999 | ||
1000 | n = 0; | |
1001 | dev = &ppd->dd->verbs_dev; | |
1002 | spin_lock(&dev->pending_lock); | |
1003 | ||
1004 | /* Search wait list for first QP wanting DMA descriptors. */ | |
1005 | list_for_each_entry_safe(qp, nqp, &dev->dmawait, iowait) { | |
1006 | if (qp->port_num != ppd->port) | |
1007 | continue; | |
1008 | if (n == ARRAY_SIZE(qps)) | |
1009 | break; | |
1010 | if (qp->s_tx->txreq.sg_count > avail) | |
1011 | break; | |
1012 | avail -= qp->s_tx->txreq.sg_count; | |
1013 | list_del_init(&qp->iowait); | |
1014 | atomic_inc(&qp->refcount); | |
1015 | qps[n++] = qp; | |
1016 | } | |
1017 | ||
1018 | spin_unlock(&dev->pending_lock); | |
1019 | ||
1020 | for (i = 0; i < n; i++) { | |
1021 | qp = qps[i]; | |
1022 | spin_lock(&qp->s_lock); | |
1023 | if (qp->s_flags & QIB_S_WAIT_DMA_DESC) { | |
1024 | qp->s_flags &= ~QIB_S_WAIT_DMA_DESC; | |
1025 | qib_schedule_send(qp); | |
1026 | } | |
1027 | spin_unlock(&qp->s_lock); | |
1028 | if (atomic_dec_and_test(&qp->refcount)) | |
1029 | wake_up(&qp->wait); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * This is called with ppd->sdma_lock held. | |
1035 | */ | |
1036 | static void sdma_complete(struct qib_sdma_txreq *cookie, int status) | |
1037 | { | |
1038 | struct qib_verbs_txreq *tx = | |
1039 | container_of(cookie, struct qib_verbs_txreq, txreq); | |
1040 | struct qib_qp *qp = tx->qp; | |
1041 | ||
1042 | spin_lock(&qp->s_lock); | |
1043 | if (tx->wqe) | |
1044 | qib_send_complete(qp, tx->wqe, IB_WC_SUCCESS); | |
1045 | else if (qp->ibqp.qp_type == IB_QPT_RC) { | |
1046 | struct qib_ib_header *hdr; | |
1047 | ||
1048 | if (tx->txreq.flags & QIB_SDMA_TXREQ_F_FREEBUF) | |
1049 | hdr = &tx->align_buf->hdr; | |
1050 | else { | |
1051 | struct qib_ibdev *dev = to_idev(qp->ibqp.device); | |
1052 | ||
1053 | hdr = &dev->pio_hdrs[tx->hdr_inx].hdr; | |
1054 | } | |
1055 | qib_rc_send_complete(qp, hdr); | |
1056 | } | |
1057 | if (atomic_dec_and_test(&qp->s_dma_busy)) { | |
1058 | if (qp->state == IB_QPS_RESET) | |
1059 | wake_up(&qp->wait_dma); | |
1060 | else if (qp->s_flags & QIB_S_WAIT_DMA) { | |
1061 | qp->s_flags &= ~QIB_S_WAIT_DMA; | |
1062 | qib_schedule_send(qp); | |
1063 | } | |
1064 | } | |
1065 | spin_unlock(&qp->s_lock); | |
1066 | ||
1067 | qib_put_txreq(tx); | |
1068 | } | |
1069 | ||
1070 | static int wait_kmem(struct qib_ibdev *dev, struct qib_qp *qp) | |
1071 | { | |
1072 | unsigned long flags; | |
1073 | int ret = 0; | |
1074 | ||
1075 | spin_lock_irqsave(&qp->s_lock, flags); | |
1076 | if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK) { | |
1077 | spin_lock(&dev->pending_lock); | |
1078 | if (list_empty(&qp->iowait)) { | |
1079 | if (list_empty(&dev->memwait)) | |
1080 | mod_timer(&dev->mem_timer, jiffies + 1); | |
1081 | qp->s_flags |= QIB_S_WAIT_KMEM; | |
1082 | list_add_tail(&qp->iowait, &dev->memwait); | |
1083 | } | |
1084 | spin_unlock(&dev->pending_lock); | |
1085 | qp->s_flags &= ~QIB_S_BUSY; | |
1086 | ret = -EBUSY; | |
1087 | } | |
1088 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
1089 | ||
1090 | return ret; | |
1091 | } | |
1092 | ||
1093 | static int qib_verbs_send_dma(struct qib_qp *qp, struct qib_ib_header *hdr, | |
1094 | u32 hdrwords, struct qib_sge_state *ss, u32 len, | |
1095 | u32 plen, u32 dwords) | |
1096 | { | |
1097 | struct qib_ibdev *dev = to_idev(qp->ibqp.device); | |
1098 | struct qib_devdata *dd = dd_from_dev(dev); | |
1099 | struct qib_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num); | |
1100 | struct qib_pportdata *ppd = ppd_from_ibp(ibp); | |
1101 | struct qib_verbs_txreq *tx; | |
1102 | struct qib_pio_header *phdr; | |
1103 | u32 control; | |
1104 | u32 ndesc; | |
1105 | int ret; | |
1106 | ||
1107 | tx = qp->s_tx; | |
1108 | if (tx) { | |
1109 | qp->s_tx = NULL; | |
1110 | /* resend previously constructed packet */ | |
1111 | ret = qib_sdma_verbs_send(ppd, tx->ss, tx->dwords, tx); | |
1112 | goto bail; | |
1113 | } | |
1114 | ||
1115 | tx = get_txreq(dev, qp, &ret); | |
1116 | if (!tx) | |
1117 | goto bail; | |
1118 | ||
1119 | control = dd->f_setpbc_control(ppd, plen, qp->s_srate, | |
1120 | be16_to_cpu(hdr->lrh[0]) >> 12); | |
1121 | tx->qp = qp; | |
1122 | atomic_inc(&qp->refcount); | |
1123 | tx->wqe = qp->s_wqe; | |
1124 | tx->mr = qp->s_rdma_mr; | |
1125 | if (qp->s_rdma_mr) | |
1126 | qp->s_rdma_mr = NULL; | |
1127 | tx->txreq.callback = sdma_complete; | |
1128 | if (dd->flags & QIB_HAS_SDMA_TIMEOUT) | |
1129 | tx->txreq.flags = QIB_SDMA_TXREQ_F_HEADTOHOST; | |
1130 | else | |
1131 | tx->txreq.flags = QIB_SDMA_TXREQ_F_INTREQ; | |
1132 | if (plen + 1 > dd->piosize2kmax_dwords) | |
1133 | tx->txreq.flags |= QIB_SDMA_TXREQ_F_USELARGEBUF; | |
1134 | ||
1135 | if (len) { | |
1136 | /* | |
1137 | * Don't try to DMA if it takes more descriptors than | |
1138 | * the queue holds. | |
1139 | */ | |
1140 | ndesc = qib_count_sge(ss, len); | |
1141 | if (ndesc >= ppd->sdma_descq_cnt) | |
1142 | ndesc = 0; | |
1143 | } else | |
1144 | ndesc = 1; | |
1145 | if (ndesc) { | |
1146 | phdr = &dev->pio_hdrs[tx->hdr_inx]; | |
1147 | phdr->pbc[0] = cpu_to_le32(plen); | |
1148 | phdr->pbc[1] = cpu_to_le32(control); | |
1149 | memcpy(&phdr->hdr, hdr, hdrwords << 2); | |
1150 | tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEDESC; | |
1151 | tx->txreq.sg_count = ndesc; | |
1152 | tx->txreq.addr = dev->pio_hdrs_phys + | |
1153 | tx->hdr_inx * sizeof(struct qib_pio_header); | |
1154 | tx->hdr_dwords = hdrwords + 2; /* add PBC length */ | |
1155 | ret = qib_sdma_verbs_send(ppd, ss, dwords, tx); | |
1156 | goto bail; | |
1157 | } | |
1158 | ||
1159 | /* Allocate a buffer and copy the header and payload to it. */ | |
1160 | tx->hdr_dwords = plen + 1; | |
1161 | phdr = kmalloc(tx->hdr_dwords << 2, GFP_ATOMIC); | |
1162 | if (!phdr) | |
1163 | goto err_tx; | |
1164 | phdr->pbc[0] = cpu_to_le32(plen); | |
1165 | phdr->pbc[1] = cpu_to_le32(control); | |
1166 | memcpy(&phdr->hdr, hdr, hdrwords << 2); | |
1167 | qib_copy_from_sge((u32 *) &phdr->hdr + hdrwords, ss, len); | |
1168 | ||
1169 | tx->txreq.addr = dma_map_single(&dd->pcidev->dev, phdr, | |
1170 | tx->hdr_dwords << 2, DMA_TO_DEVICE); | |
1171 | if (dma_mapping_error(&dd->pcidev->dev, tx->txreq.addr)) | |
1172 | goto map_err; | |
1173 | tx->align_buf = phdr; | |
1174 | tx->txreq.flags |= QIB_SDMA_TXREQ_F_FREEBUF; | |
1175 | tx->txreq.sg_count = 1; | |
1176 | ret = qib_sdma_verbs_send(ppd, NULL, 0, tx); | |
1177 | goto unaligned; | |
1178 | ||
1179 | map_err: | |
1180 | kfree(phdr); | |
1181 | err_tx: | |
1182 | qib_put_txreq(tx); | |
1183 | ret = wait_kmem(dev, qp); | |
1184 | unaligned: | |
1185 | ibp->n_unaligned++; | |
1186 | bail: | |
1187 | return ret; | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * If we are now in the error state, return zero to flush the | |
1192 | * send work request. | |
1193 | */ | |
1194 | static int no_bufs_available(struct qib_qp *qp) | |
1195 | { | |
1196 | struct qib_ibdev *dev = to_idev(qp->ibqp.device); | |
1197 | struct qib_devdata *dd; | |
1198 | unsigned long flags; | |
1199 | int ret = 0; | |
1200 | ||
1201 | /* | |
1202 | * Note that as soon as want_buffer() is called and | |
1203 | * possibly before it returns, qib_ib_piobufavail() | |
1204 | * could be called. Therefore, put QP on the I/O wait list before | |
1205 | * enabling the PIO avail interrupt. | |
1206 | */ | |
1207 | spin_lock_irqsave(&qp->s_lock, flags); | |
1208 | if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK) { | |
1209 | spin_lock(&dev->pending_lock); | |
1210 | if (list_empty(&qp->iowait)) { | |
1211 | dev->n_piowait++; | |
1212 | qp->s_flags |= QIB_S_WAIT_PIO; | |
1213 | list_add_tail(&qp->iowait, &dev->piowait); | |
1214 | dd = dd_from_dev(dev); | |
1215 | dd->f_wantpiobuf_intr(dd, 1); | |
1216 | } | |
1217 | spin_unlock(&dev->pending_lock); | |
1218 | qp->s_flags &= ~QIB_S_BUSY; | |
1219 | ret = -EBUSY; | |
1220 | } | |
1221 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
1222 | return ret; | |
1223 | } | |
1224 | ||
1225 | static int qib_verbs_send_pio(struct qib_qp *qp, struct qib_ib_header *ibhdr, | |
1226 | u32 hdrwords, struct qib_sge_state *ss, u32 len, | |
1227 | u32 plen, u32 dwords) | |
1228 | { | |
1229 | struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device); | |
1230 | struct qib_pportdata *ppd = dd->pport + qp->port_num - 1; | |
1231 | u32 *hdr = (u32 *) ibhdr; | |
1232 | u32 __iomem *piobuf_orig; | |
1233 | u32 __iomem *piobuf; | |
1234 | u64 pbc; | |
1235 | unsigned long flags; | |
1236 | unsigned flush_wc; | |
1237 | u32 control; | |
1238 | u32 pbufn; | |
1239 | ||
1240 | control = dd->f_setpbc_control(ppd, plen, qp->s_srate, | |
1241 | be16_to_cpu(ibhdr->lrh[0]) >> 12); | |
1242 | pbc = ((u64) control << 32) | plen; | |
1243 | piobuf = dd->f_getsendbuf(ppd, pbc, &pbufn); | |
1244 | if (unlikely(piobuf == NULL)) | |
1245 | return no_bufs_available(qp); | |
1246 | ||
1247 | /* | |
1248 | * Write the pbc. | |
1249 | * We have to flush after the PBC for correctness on some cpus | |
1250 | * or WC buffer can be written out of order. | |
1251 | */ | |
1252 | writeq(pbc, piobuf); | |
1253 | piobuf_orig = piobuf; | |
1254 | piobuf += 2; | |
1255 | ||
1256 | flush_wc = dd->flags & QIB_PIO_FLUSH_WC; | |
1257 | if (len == 0) { | |
1258 | /* | |
1259 | * If there is just the header portion, must flush before | |
1260 | * writing last word of header for correctness, and after | |
1261 | * the last header word (trigger word). | |
1262 | */ | |
1263 | if (flush_wc) { | |
1264 | qib_flush_wc(); | |
1265 | qib_pio_copy(piobuf, hdr, hdrwords - 1); | |
1266 | qib_flush_wc(); | |
1267 | __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1); | |
1268 | qib_flush_wc(); | |
1269 | } else | |
1270 | qib_pio_copy(piobuf, hdr, hdrwords); | |
1271 | goto done; | |
1272 | } | |
1273 | ||
1274 | if (flush_wc) | |
1275 | qib_flush_wc(); | |
1276 | qib_pio_copy(piobuf, hdr, hdrwords); | |
1277 | piobuf += hdrwords; | |
1278 | ||
1279 | /* The common case is aligned and contained in one segment. */ | |
1280 | if (likely(ss->num_sge == 1 && len <= ss->sge.length && | |
1281 | !((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) { | |
1282 | u32 *addr = (u32 *) ss->sge.vaddr; | |
1283 | ||
1284 | /* Update address before sending packet. */ | |
1285 | update_sge(ss, len); | |
1286 | if (flush_wc) { | |
1287 | qib_pio_copy(piobuf, addr, dwords - 1); | |
1288 | /* must flush early everything before trigger word */ | |
1289 | qib_flush_wc(); | |
1290 | __raw_writel(addr[dwords - 1], piobuf + dwords - 1); | |
1291 | /* be sure trigger word is written */ | |
1292 | qib_flush_wc(); | |
1293 | } else | |
1294 | qib_pio_copy(piobuf, addr, dwords); | |
1295 | goto done; | |
1296 | } | |
1297 | copy_io(piobuf, ss, len, flush_wc); | |
1298 | done: | |
1299 | if (dd->flags & QIB_USE_SPCL_TRIG) { | |
1300 | u32 spcl_off = (pbufn >= dd->piobcnt2k) ? 2047 : 1023; | |
1301 | qib_flush_wc(); | |
1302 | __raw_writel(0xaebecede, piobuf_orig + spcl_off); | |
1303 | } | |
1304 | qib_sendbuf_done(dd, pbufn); | |
1305 | if (qp->s_rdma_mr) { | |
1306 | atomic_dec(&qp->s_rdma_mr->refcount); | |
1307 | qp->s_rdma_mr = NULL; | |
1308 | } | |
1309 | if (qp->s_wqe) { | |
1310 | spin_lock_irqsave(&qp->s_lock, flags); | |
1311 | qib_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS); | |
1312 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
1313 | } else if (qp->ibqp.qp_type == IB_QPT_RC) { | |
1314 | spin_lock_irqsave(&qp->s_lock, flags); | |
1315 | qib_rc_send_complete(qp, ibhdr); | |
1316 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
1317 | } | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | /** | |
1322 | * qib_verbs_send - send a packet | |
1323 | * @qp: the QP to send on | |
1324 | * @hdr: the packet header | |
1325 | * @hdrwords: the number of 32-bit words in the header | |
1326 | * @ss: the SGE to send | |
1327 | * @len: the length of the packet in bytes | |
1328 | * | |
1329 | * Return zero if packet is sent or queued OK. | |
1330 | * Return non-zero and clear qp->s_flags QIB_S_BUSY otherwise. | |
1331 | */ | |
1332 | int qib_verbs_send(struct qib_qp *qp, struct qib_ib_header *hdr, | |
1333 | u32 hdrwords, struct qib_sge_state *ss, u32 len) | |
1334 | { | |
1335 | struct qib_devdata *dd = dd_from_ibdev(qp->ibqp.device); | |
1336 | u32 plen; | |
1337 | int ret; | |
1338 | u32 dwords = (len + 3) >> 2; | |
1339 | ||
1340 | /* | |
1341 | * Calculate the send buffer trigger address. | |
1342 | * The +1 counts for the pbc control dword following the pbc length. | |
1343 | */ | |
1344 | plen = hdrwords + dwords + 1; | |
1345 | ||
1346 | /* | |
1347 | * VL15 packets (IB_QPT_SMI) will always use PIO, so we | |
1348 | * can defer SDMA restart until link goes ACTIVE without | |
1349 | * worrying about just how we got there. | |
1350 | */ | |
1351 | if (qp->ibqp.qp_type == IB_QPT_SMI || | |
1352 | !(dd->flags & QIB_HAS_SEND_DMA)) | |
1353 | ret = qib_verbs_send_pio(qp, hdr, hdrwords, ss, len, | |
1354 | plen, dwords); | |
1355 | else | |
1356 | ret = qib_verbs_send_dma(qp, hdr, hdrwords, ss, len, | |
1357 | plen, dwords); | |
1358 | ||
1359 | return ret; | |
1360 | } | |
1361 | ||
1362 | int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, | |
1363 | u64 *rwords, u64 *spkts, u64 *rpkts, | |
1364 | u64 *xmit_wait) | |
1365 | { | |
1366 | int ret; | |
1367 | struct qib_devdata *dd = ppd->dd; | |
1368 | ||
1369 | if (!(dd->flags & QIB_PRESENT)) { | |
1370 | /* no hardware, freeze, etc. */ | |
1371 | ret = -EINVAL; | |
1372 | goto bail; | |
1373 | } | |
1374 | *swords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDSEND); | |
1375 | *rwords = dd->f_portcntr(ppd, QIBPORTCNTR_WORDRCV); | |
1376 | *spkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTSEND); | |
1377 | *rpkts = dd->f_portcntr(ppd, QIBPORTCNTR_PKTRCV); | |
1378 | *xmit_wait = dd->f_portcntr(ppd, QIBPORTCNTR_SENDSTALL); | |
1379 | ||
1380 | ret = 0; | |
1381 | ||
1382 | bail: | |
1383 | return ret; | |
1384 | } | |
1385 | ||
1386 | /** | |
1387 | * qib_get_counters - get various chip counters | |
1388 | * @dd: the qlogic_ib device | |
1389 | * @cntrs: counters are placed here | |
1390 | * | |
1391 | * Return the counters needed by recv_pma_get_portcounters(). | |
1392 | */ | |
1393 | int qib_get_counters(struct qib_pportdata *ppd, | |
1394 | struct qib_verbs_counters *cntrs) | |
1395 | { | |
1396 | int ret; | |
1397 | ||
1398 | if (!(ppd->dd->flags & QIB_PRESENT)) { | |
1399 | /* no hardware, freeze, etc. */ | |
1400 | ret = -EINVAL; | |
1401 | goto bail; | |
1402 | } | |
1403 | cntrs->symbol_error_counter = | |
1404 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBSYMBOLERR); | |
1405 | cntrs->link_error_recovery_counter = | |
1406 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKERRRECOV); | |
1407 | /* | |
1408 | * The link downed counter counts when the other side downs the | |
1409 | * connection. We add in the number of times we downed the link | |
1410 | * due to local link integrity errors to compensate. | |
1411 | */ | |
1412 | cntrs->link_downed_counter = | |
1413 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_IBLINKDOWN); | |
1414 | cntrs->port_rcv_errors = | |
1415 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXDROPPKT) + | |
1416 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVOVFL) + | |
1417 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERR_RLEN) + | |
1418 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_INVALIDRLEN) + | |
1419 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLINK) + | |
1420 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRICRC) + | |
1421 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRVCRC) + | |
1422 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_ERRLPCRC) + | |
1423 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_BADFORMAT); | |
1424 | cntrs->port_rcv_errors += | |
1425 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXLOCALPHYERR); | |
1426 | cntrs->port_rcv_errors += | |
1427 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RXVLERR); | |
1428 | cntrs->port_rcv_remphys_errors = | |
1429 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_RCVEBP); | |
1430 | cntrs->port_xmit_discards = | |
1431 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_UNSUPVL); | |
1432 | cntrs->port_xmit_data = ppd->dd->f_portcntr(ppd, | |
1433 | QIBPORTCNTR_WORDSEND); | |
1434 | cntrs->port_rcv_data = ppd->dd->f_portcntr(ppd, | |
1435 | QIBPORTCNTR_WORDRCV); | |
1436 | cntrs->port_xmit_packets = ppd->dd->f_portcntr(ppd, | |
1437 | QIBPORTCNTR_PKTSEND); | |
1438 | cntrs->port_rcv_packets = ppd->dd->f_portcntr(ppd, | |
1439 | QIBPORTCNTR_PKTRCV); | |
1440 | cntrs->local_link_integrity_errors = | |
1441 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_LLI); | |
1442 | cntrs->excessive_buffer_overrun_errors = | |
1443 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_EXCESSBUFOVFL); | |
1444 | cntrs->vl15_dropped = | |
1445 | ppd->dd->f_portcntr(ppd, QIBPORTCNTR_VL15PKTDROP); | |
1446 | ||
1447 | ret = 0; | |
1448 | ||
1449 | bail: | |
1450 | return ret; | |
1451 | } | |
1452 | ||
1453 | /** | |
1454 | * qib_ib_piobufavail - callback when a PIO buffer is available | |
1455 | * @dd: the device pointer | |
1456 | * | |
1457 | * This is called from qib_intr() at interrupt level when a PIO buffer is | |
1458 | * available after qib_verbs_send() returned an error that no buffers were | |
1459 | * available. Disable the interrupt if there are no more QPs waiting. | |
1460 | */ | |
1461 | void qib_ib_piobufavail(struct qib_devdata *dd) | |
1462 | { | |
1463 | struct qib_ibdev *dev = &dd->verbs_dev; | |
1464 | struct list_head *list; | |
1465 | struct qib_qp *qps[5]; | |
1466 | struct qib_qp *qp; | |
1467 | unsigned long flags; | |
1468 | unsigned i, n; | |
1469 | ||
1470 | list = &dev->piowait; | |
1471 | n = 0; | |
1472 | ||
1473 | /* | |
1474 | * Note: checking that the piowait list is empty and clearing | |
1475 | * the buffer available interrupt needs to be atomic or we | |
1476 | * could end up with QPs on the wait list with the interrupt | |
1477 | * disabled. | |
1478 | */ | |
1479 | spin_lock_irqsave(&dev->pending_lock, flags); | |
1480 | while (!list_empty(list)) { | |
1481 | if (n == ARRAY_SIZE(qps)) | |
1482 | goto full; | |
1483 | qp = list_entry(list->next, struct qib_qp, iowait); | |
1484 | list_del_init(&qp->iowait); | |
1485 | atomic_inc(&qp->refcount); | |
1486 | qps[n++] = qp; | |
1487 | } | |
1488 | dd->f_wantpiobuf_intr(dd, 0); | |
1489 | full: | |
1490 | spin_unlock_irqrestore(&dev->pending_lock, flags); | |
1491 | ||
1492 | for (i = 0; i < n; i++) { | |
1493 | qp = qps[i]; | |
1494 | ||
1495 | spin_lock_irqsave(&qp->s_lock, flags); | |
1496 | if (qp->s_flags & QIB_S_WAIT_PIO) { | |
1497 | qp->s_flags &= ~QIB_S_WAIT_PIO; | |
1498 | qib_schedule_send(qp); | |
1499 | } | |
1500 | spin_unlock_irqrestore(&qp->s_lock, flags); | |
1501 | ||
1502 | /* Notify qib_destroy_qp() if it is waiting. */ | |
1503 | if (atomic_dec_and_test(&qp->refcount)) | |
1504 | wake_up(&qp->wait); | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | static int qib_query_device(struct ib_device *ibdev, | |
1509 | struct ib_device_attr *props) | |
1510 | { | |
1511 | struct qib_devdata *dd = dd_from_ibdev(ibdev); | |
1512 | struct qib_ibdev *dev = to_idev(ibdev); | |
1513 | ||
1514 | memset(props, 0, sizeof(*props)); | |
1515 | ||
1516 | props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | | |
1517 | IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | | |
1518 | IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | | |
1519 | IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE; | |
1520 | props->page_size_cap = PAGE_SIZE; | |
1521 | props->vendor_id = | |
1522 | QIB_SRC_OUI_1 << 16 | QIB_SRC_OUI_2 << 8 | QIB_SRC_OUI_3; | |
1523 | props->vendor_part_id = dd->deviceid; | |
1524 | props->hw_ver = dd->minrev; | |
1525 | props->sys_image_guid = ib_qib_sys_image_guid; | |
1526 | props->max_mr_size = ~0ULL; | |
1527 | props->max_qp = ib_qib_max_qps; | |
1528 | props->max_qp_wr = ib_qib_max_qp_wrs; | |
1529 | props->max_sge = ib_qib_max_sges; | |
1530 | props->max_cq = ib_qib_max_cqs; | |
1531 | props->max_ah = ib_qib_max_ahs; | |
1532 | props->max_cqe = ib_qib_max_cqes; | |
1533 | props->max_mr = dev->lk_table.max; | |
1534 | props->max_fmr = dev->lk_table.max; | |
1535 | props->max_map_per_fmr = 32767; | |
1536 | props->max_pd = ib_qib_max_pds; | |
1537 | props->max_qp_rd_atom = QIB_MAX_RDMA_ATOMIC; | |
1538 | props->max_qp_init_rd_atom = 255; | |
1539 | /* props->max_res_rd_atom */ | |
1540 | props->max_srq = ib_qib_max_srqs; | |
1541 | props->max_srq_wr = ib_qib_max_srq_wrs; | |
1542 | props->max_srq_sge = ib_qib_max_srq_sges; | |
1543 | /* props->local_ca_ack_delay */ | |
1544 | props->atomic_cap = IB_ATOMIC_GLOB; | |
1545 | props->max_pkeys = qib_get_npkeys(dd); | |
1546 | props->max_mcast_grp = ib_qib_max_mcast_grps; | |
1547 | props->max_mcast_qp_attach = ib_qib_max_mcast_qp_attached; | |
1548 | props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * | |
1549 | props->max_mcast_grp; | |
1550 | ||
1551 | return 0; | |
1552 | } | |
1553 | ||
1554 | static int qib_query_port(struct ib_device *ibdev, u8 port, | |
1555 | struct ib_port_attr *props) | |
1556 | { | |
1557 | struct qib_devdata *dd = dd_from_ibdev(ibdev); | |
1558 | struct qib_ibport *ibp = to_iport(ibdev, port); | |
1559 | struct qib_pportdata *ppd = ppd_from_ibp(ibp); | |
1560 | enum ib_mtu mtu; | |
1561 | u16 lid = ppd->lid; | |
1562 | ||
1563 | memset(props, 0, sizeof(*props)); | |
1564 | props->lid = lid ? lid : be16_to_cpu(IB_LID_PERMISSIVE); | |
1565 | props->lmc = ppd->lmc; | |
1566 | props->sm_lid = ibp->sm_lid; | |
1567 | props->sm_sl = ibp->sm_sl; | |
1568 | props->state = dd->f_iblink_state(ppd->lastibcstat); | |
1569 | props->phys_state = dd->f_ibphys_portstate(ppd->lastibcstat); | |
1570 | props->port_cap_flags = ibp->port_cap_flags; | |
1571 | props->gid_tbl_len = QIB_GUIDS_PER_PORT; | |
1572 | props->max_msg_sz = 0x80000000; | |
1573 | props->pkey_tbl_len = qib_get_npkeys(dd); | |
1574 | props->bad_pkey_cntr = ibp->pkey_violations; | |
1575 | props->qkey_viol_cntr = ibp->qkey_violations; | |
1576 | props->active_width = ppd->link_width_active; | |
1577 | /* See rate_show() */ | |
1578 | props->active_speed = ppd->link_speed_active; | |
1579 | props->max_vl_num = qib_num_vls(ppd->vls_supported); | |
1580 | props->init_type_reply = 0; | |
1581 | ||
1582 | props->max_mtu = qib_ibmtu ? qib_ibmtu : IB_MTU_4096; | |
1583 | switch (ppd->ibmtu) { | |
1584 | case 4096: | |
1585 | mtu = IB_MTU_4096; | |
1586 | break; | |
1587 | case 2048: | |
1588 | mtu = IB_MTU_2048; | |
1589 | break; | |
1590 | case 1024: | |
1591 | mtu = IB_MTU_1024; | |
1592 | break; | |
1593 | case 512: | |
1594 | mtu = IB_MTU_512; | |
1595 | break; | |
1596 | case 256: | |
1597 | mtu = IB_MTU_256; | |
1598 | break; | |
1599 | default: | |
1600 | mtu = IB_MTU_2048; | |
1601 | } | |
1602 | props->active_mtu = mtu; | |
1603 | props->subnet_timeout = ibp->subnet_timeout; | |
1604 | ||
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | static int qib_modify_device(struct ib_device *device, | |
1609 | int device_modify_mask, | |
1610 | struct ib_device_modify *device_modify) | |
1611 | { | |
1612 | struct qib_devdata *dd = dd_from_ibdev(device); | |
1613 | unsigned i; | |
1614 | int ret; | |
1615 | ||
1616 | if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID | | |
1617 | IB_DEVICE_MODIFY_NODE_DESC)) { | |
1618 | ret = -EOPNOTSUPP; | |
1619 | goto bail; | |
1620 | } | |
1621 | ||
1622 | if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) { | |
1623 | memcpy(device->node_desc, device_modify->node_desc, 64); | |
1624 | for (i = 0; i < dd->num_pports; i++) { | |
1625 | struct qib_ibport *ibp = &dd->pport[i].ibport_data; | |
1626 | ||
1627 | qib_node_desc_chg(ibp); | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) { | |
1632 | ib_qib_sys_image_guid = | |
1633 | cpu_to_be64(device_modify->sys_image_guid); | |
1634 | for (i = 0; i < dd->num_pports; i++) { | |
1635 | struct qib_ibport *ibp = &dd->pport[i].ibport_data; | |
1636 | ||
1637 | qib_sys_guid_chg(ibp); | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | ret = 0; | |
1642 | ||
1643 | bail: | |
1644 | return ret; | |
1645 | } | |
1646 | ||
1647 | static int qib_modify_port(struct ib_device *ibdev, u8 port, | |
1648 | int port_modify_mask, struct ib_port_modify *props) | |
1649 | { | |
1650 | struct qib_ibport *ibp = to_iport(ibdev, port); | |
1651 | struct qib_pportdata *ppd = ppd_from_ibp(ibp); | |
1652 | ||
1653 | ibp->port_cap_flags |= props->set_port_cap_mask; | |
1654 | ibp->port_cap_flags &= ~props->clr_port_cap_mask; | |
1655 | if (props->set_port_cap_mask || props->clr_port_cap_mask) | |
1656 | qib_cap_mask_chg(ibp); | |
1657 | if (port_modify_mask & IB_PORT_SHUTDOWN) | |
1658 | qib_set_linkstate(ppd, QIB_IB_LINKDOWN); | |
1659 | if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) | |
1660 | ibp->qkey_violations = 0; | |
1661 | return 0; | |
1662 | } | |
1663 | ||
1664 | static int qib_query_gid(struct ib_device *ibdev, u8 port, | |
1665 | int index, union ib_gid *gid) | |
1666 | { | |
1667 | struct qib_devdata *dd = dd_from_ibdev(ibdev); | |
1668 | int ret = 0; | |
1669 | ||
1670 | if (!port || port > dd->num_pports) | |
1671 | ret = -EINVAL; | |
1672 | else { | |
1673 | struct qib_ibport *ibp = to_iport(ibdev, port); | |
1674 | struct qib_pportdata *ppd = ppd_from_ibp(ibp); | |
1675 | ||
1676 | gid->global.subnet_prefix = ibp->gid_prefix; | |
1677 | if (index == 0) | |
1678 | gid->global.interface_id = ppd->guid; | |
1679 | else if (index < QIB_GUIDS_PER_PORT) | |
1680 | gid->global.interface_id = ibp->guids[index - 1]; | |
1681 | else | |
1682 | ret = -EINVAL; | |
1683 | } | |
1684 | ||
1685 | return ret; | |
1686 | } | |
1687 | ||
1688 | static struct ib_pd *qib_alloc_pd(struct ib_device *ibdev, | |
1689 | struct ib_ucontext *context, | |
1690 | struct ib_udata *udata) | |
1691 | { | |
1692 | struct qib_ibdev *dev = to_idev(ibdev); | |
1693 | struct qib_pd *pd; | |
1694 | struct ib_pd *ret; | |
1695 | ||
1696 | /* | |
1697 | * This is actually totally arbitrary. Some correctness tests | |
1698 | * assume there's a maximum number of PDs that can be allocated. | |
1699 | * We don't actually have this limit, but we fail the test if | |
1700 | * we allow allocations of more than we report for this value. | |
1701 | */ | |
1702 | ||
1703 | pd = kmalloc(sizeof *pd, GFP_KERNEL); | |
1704 | if (!pd) { | |
1705 | ret = ERR_PTR(-ENOMEM); | |
1706 | goto bail; | |
1707 | } | |
1708 | ||
1709 | spin_lock(&dev->n_pds_lock); | |
1710 | if (dev->n_pds_allocated == ib_qib_max_pds) { | |
1711 | spin_unlock(&dev->n_pds_lock); | |
1712 | kfree(pd); | |
1713 | ret = ERR_PTR(-ENOMEM); | |
1714 | goto bail; | |
1715 | } | |
1716 | ||
1717 | dev->n_pds_allocated++; | |
1718 | spin_unlock(&dev->n_pds_lock); | |
1719 | ||
1720 | /* ib_alloc_pd() will initialize pd->ibpd. */ | |
1721 | pd->user = udata != NULL; | |
1722 | ||
1723 | ret = &pd->ibpd; | |
1724 | ||
1725 | bail: | |
1726 | return ret; | |
1727 | } | |
1728 | ||
1729 | static int qib_dealloc_pd(struct ib_pd *ibpd) | |
1730 | { | |
1731 | struct qib_pd *pd = to_ipd(ibpd); | |
1732 | struct qib_ibdev *dev = to_idev(ibpd->device); | |
1733 | ||
1734 | spin_lock(&dev->n_pds_lock); | |
1735 | dev->n_pds_allocated--; | |
1736 | spin_unlock(&dev->n_pds_lock); | |
1737 | ||
1738 | kfree(pd); | |
1739 | ||
1740 | return 0; | |
1741 | } | |
1742 | ||
1743 | int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr) | |
1744 | { | |
1745 | /* A multicast address requires a GRH (see ch. 8.4.1). */ | |
1746 | if (ah_attr->dlid >= QIB_MULTICAST_LID_BASE && | |
1747 | ah_attr->dlid != QIB_PERMISSIVE_LID && | |
1748 | !(ah_attr->ah_flags & IB_AH_GRH)) | |
1749 | goto bail; | |
1750 | if ((ah_attr->ah_flags & IB_AH_GRH) && | |
1751 | ah_attr->grh.sgid_index >= QIB_GUIDS_PER_PORT) | |
1752 | goto bail; | |
1753 | if (ah_attr->dlid == 0) | |
1754 | goto bail; | |
1755 | if (ah_attr->port_num < 1 || | |
1756 | ah_attr->port_num > ibdev->phys_port_cnt) | |
1757 | goto bail; | |
1758 | if (ah_attr->static_rate != IB_RATE_PORT_CURRENT && | |
1759 | ib_rate_to_mult(ah_attr->static_rate) < 0) | |
1760 | goto bail; | |
1761 | if (ah_attr->sl > 15) | |
1762 | goto bail; | |
1763 | return 0; | |
1764 | bail: | |
1765 | return -EINVAL; | |
1766 | } | |
1767 | ||
1768 | /** | |
1769 | * qib_create_ah - create an address handle | |
1770 | * @pd: the protection domain | |
1771 | * @ah_attr: the attributes of the AH | |
1772 | * | |
1773 | * This may be called from interrupt context. | |
1774 | */ | |
1775 | static struct ib_ah *qib_create_ah(struct ib_pd *pd, | |
1776 | struct ib_ah_attr *ah_attr) | |
1777 | { | |
1778 | struct qib_ah *ah; | |
1779 | struct ib_ah *ret; | |
1780 | struct qib_ibdev *dev = to_idev(pd->device); | |
1781 | unsigned long flags; | |
1782 | ||
1783 | if (qib_check_ah(pd->device, ah_attr)) { | |
1784 | ret = ERR_PTR(-EINVAL); | |
1785 | goto bail; | |
1786 | } | |
1787 | ||
1788 | ah = kmalloc(sizeof *ah, GFP_ATOMIC); | |
1789 | if (!ah) { | |
1790 | ret = ERR_PTR(-ENOMEM); | |
1791 | goto bail; | |
1792 | } | |
1793 | ||
1794 | spin_lock_irqsave(&dev->n_ahs_lock, flags); | |
1795 | if (dev->n_ahs_allocated == ib_qib_max_ahs) { | |
1796 | spin_unlock_irqrestore(&dev->n_ahs_lock, flags); | |
1797 | kfree(ah); | |
1798 | ret = ERR_PTR(-ENOMEM); | |
1799 | goto bail; | |
1800 | } | |
1801 | ||
1802 | dev->n_ahs_allocated++; | |
1803 | spin_unlock_irqrestore(&dev->n_ahs_lock, flags); | |
1804 | ||
1805 | /* ib_create_ah() will initialize ah->ibah. */ | |
1806 | ah->attr = *ah_attr; | |
1807 | atomic_set(&ah->refcount, 0); | |
1808 | ||
1809 | ret = &ah->ibah; | |
1810 | ||
1811 | bail: | |
1812 | return ret; | |
1813 | } | |
1814 | ||
1815 | /** | |
1816 | * qib_destroy_ah - destroy an address handle | |
1817 | * @ibah: the AH to destroy | |
1818 | * | |
1819 | * This may be called from interrupt context. | |
1820 | */ | |
1821 | static int qib_destroy_ah(struct ib_ah *ibah) | |
1822 | { | |
1823 | struct qib_ibdev *dev = to_idev(ibah->device); | |
1824 | struct qib_ah *ah = to_iah(ibah); | |
1825 | unsigned long flags; | |
1826 | ||
1827 | if (atomic_read(&ah->refcount) != 0) | |
1828 | return -EBUSY; | |
1829 | ||
1830 | spin_lock_irqsave(&dev->n_ahs_lock, flags); | |
1831 | dev->n_ahs_allocated--; | |
1832 | spin_unlock_irqrestore(&dev->n_ahs_lock, flags); | |
1833 | ||
1834 | kfree(ah); | |
1835 | ||
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | static int qib_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) | |
1840 | { | |
1841 | struct qib_ah *ah = to_iah(ibah); | |
1842 | ||
1843 | if (qib_check_ah(ibah->device, ah_attr)) | |
1844 | return -EINVAL; | |
1845 | ||
1846 | ah->attr = *ah_attr; | |
1847 | ||
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | static int qib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr) | |
1852 | { | |
1853 | struct qib_ah *ah = to_iah(ibah); | |
1854 | ||
1855 | *ah_attr = ah->attr; | |
1856 | ||
1857 | return 0; | |
1858 | } | |
1859 | ||
1860 | /** | |
1861 | * qib_get_npkeys - return the size of the PKEY table for context 0 | |
1862 | * @dd: the qlogic_ib device | |
1863 | */ | |
1864 | unsigned qib_get_npkeys(struct qib_devdata *dd) | |
1865 | { | |
1866 | return ARRAY_SIZE(dd->rcd[0]->pkeys); | |
1867 | } | |
1868 | ||
1869 | /* | |
1870 | * Return the indexed PKEY from the port PKEY table. | |
1871 | * No need to validate rcd[ctxt]; the port is setup if we are here. | |
1872 | */ | |
1873 | unsigned qib_get_pkey(struct qib_ibport *ibp, unsigned index) | |
1874 | { | |
1875 | struct qib_pportdata *ppd = ppd_from_ibp(ibp); | |
1876 | struct qib_devdata *dd = ppd->dd; | |
1877 | unsigned ctxt = ppd->hw_pidx; | |
1878 | unsigned ret; | |
1879 | ||
1880 | /* dd->rcd null if mini_init or some init failures */ | |
1881 | if (!dd->rcd || index >= ARRAY_SIZE(dd->rcd[ctxt]->pkeys)) | |
1882 | ret = 0; | |
1883 | else | |
1884 | ret = dd->rcd[ctxt]->pkeys[index]; | |
1885 | ||
1886 | return ret; | |
1887 | } | |
1888 | ||
1889 | static int qib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, | |
1890 | u16 *pkey) | |
1891 | { | |
1892 | struct qib_devdata *dd = dd_from_ibdev(ibdev); | |
1893 | int ret; | |
1894 | ||
1895 | if (index >= qib_get_npkeys(dd)) { | |
1896 | ret = -EINVAL; | |
1897 | goto bail; | |
1898 | } | |
1899 | ||
1900 | *pkey = qib_get_pkey(to_iport(ibdev, port), index); | |
1901 | ret = 0; | |
1902 | ||
1903 | bail: | |
1904 | return ret; | |
1905 | } | |
1906 | ||
1907 | /** | |
1908 | * qib_alloc_ucontext - allocate a ucontest | |
1909 | * @ibdev: the infiniband device | |
1910 | * @udata: not used by the QLogic_IB driver | |
1911 | */ | |
1912 | ||
1913 | static struct ib_ucontext *qib_alloc_ucontext(struct ib_device *ibdev, | |
1914 | struct ib_udata *udata) | |
1915 | { | |
1916 | struct qib_ucontext *context; | |
1917 | struct ib_ucontext *ret; | |
1918 | ||
1919 | context = kmalloc(sizeof *context, GFP_KERNEL); | |
1920 | if (!context) { | |
1921 | ret = ERR_PTR(-ENOMEM); | |
1922 | goto bail; | |
1923 | } | |
1924 | ||
1925 | ret = &context->ibucontext; | |
1926 | ||
1927 | bail: | |
1928 | return ret; | |
1929 | } | |
1930 | ||
1931 | static int qib_dealloc_ucontext(struct ib_ucontext *context) | |
1932 | { | |
1933 | kfree(to_iucontext(context)); | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static void init_ibport(struct qib_pportdata *ppd) | |
1938 | { | |
1939 | struct qib_verbs_counters cntrs; | |
1940 | struct qib_ibport *ibp = &ppd->ibport_data; | |
1941 | ||
1942 | spin_lock_init(&ibp->lock); | |
1943 | /* Set the prefix to the default value (see ch. 4.1.1) */ | |
1944 | ibp->gid_prefix = IB_DEFAULT_GID_PREFIX; | |
1945 | ibp->sm_lid = be16_to_cpu(IB_LID_PERMISSIVE); | |
1946 | ibp->port_cap_flags = IB_PORT_SYS_IMAGE_GUID_SUP | | |
1947 | IB_PORT_CLIENT_REG_SUP | IB_PORT_SL_MAP_SUP | | |
1948 | IB_PORT_TRAP_SUP | IB_PORT_AUTO_MIGR_SUP | | |
1949 | IB_PORT_DR_NOTICE_SUP | IB_PORT_CAP_MASK_NOTICE_SUP | | |
1950 | IB_PORT_OTHER_LOCAL_CHANGES_SUP; | |
1951 | if (ppd->dd->flags & QIB_HAS_LINK_LATENCY) | |
1952 | ibp->port_cap_flags |= IB_PORT_LINK_LATENCY_SUP; | |
1953 | ibp->pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA; | |
1954 | ibp->pma_counter_select[1] = IB_PMA_PORT_RCV_DATA; | |
1955 | ibp->pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS; | |
1956 | ibp->pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS; | |
1957 | ibp->pma_counter_select[4] = IB_PMA_PORT_XMIT_WAIT; | |
1958 | ||
1959 | /* Snapshot current HW counters to "clear" them. */ | |
1960 | qib_get_counters(ppd, &cntrs); | |
1961 | ibp->z_symbol_error_counter = cntrs.symbol_error_counter; | |
1962 | ibp->z_link_error_recovery_counter = | |
1963 | cntrs.link_error_recovery_counter; | |
1964 | ibp->z_link_downed_counter = cntrs.link_downed_counter; | |
1965 | ibp->z_port_rcv_errors = cntrs.port_rcv_errors; | |
1966 | ibp->z_port_rcv_remphys_errors = cntrs.port_rcv_remphys_errors; | |
1967 | ibp->z_port_xmit_discards = cntrs.port_xmit_discards; | |
1968 | ibp->z_port_xmit_data = cntrs.port_xmit_data; | |
1969 | ibp->z_port_rcv_data = cntrs.port_rcv_data; | |
1970 | ibp->z_port_xmit_packets = cntrs.port_xmit_packets; | |
1971 | ibp->z_port_rcv_packets = cntrs.port_rcv_packets; | |
1972 | ibp->z_local_link_integrity_errors = | |
1973 | cntrs.local_link_integrity_errors; | |
1974 | ibp->z_excessive_buffer_overrun_errors = | |
1975 | cntrs.excessive_buffer_overrun_errors; | |
1976 | ibp->z_vl15_dropped = cntrs.vl15_dropped; | |
1977 | } | |
1978 | ||
1979 | /** | |
1980 | * qib_register_ib_device - register our device with the infiniband core | |
1981 | * @dd: the device data structure | |
1982 | * Return the allocated qib_ibdev pointer or NULL on error. | |
1983 | */ | |
1984 | int qib_register_ib_device(struct qib_devdata *dd) | |
1985 | { | |
1986 | struct qib_ibdev *dev = &dd->verbs_dev; | |
1987 | struct ib_device *ibdev = &dev->ibdev; | |
1988 | struct qib_pportdata *ppd = dd->pport; | |
1989 | unsigned i, lk_tab_size; | |
1990 | int ret; | |
1991 | ||
1992 | dev->qp_table_size = ib_qib_qp_table_size; | |
1993 | dev->qp_table = kzalloc(dev->qp_table_size * sizeof *dev->qp_table, | |
1994 | GFP_KERNEL); | |
1995 | if (!dev->qp_table) { | |
1996 | ret = -ENOMEM; | |
1997 | goto err_qpt; | |
1998 | } | |
1999 | ||
2000 | for (i = 0; i < dd->num_pports; i++) | |
2001 | init_ibport(ppd + i); | |
2002 | ||
2003 | /* Only need to initialize non-zero fields. */ | |
2004 | spin_lock_init(&dev->qpt_lock); | |
2005 | spin_lock_init(&dev->n_pds_lock); | |
2006 | spin_lock_init(&dev->n_ahs_lock); | |
2007 | spin_lock_init(&dev->n_cqs_lock); | |
2008 | spin_lock_init(&dev->n_qps_lock); | |
2009 | spin_lock_init(&dev->n_srqs_lock); | |
2010 | spin_lock_init(&dev->n_mcast_grps_lock); | |
2011 | init_timer(&dev->mem_timer); | |
2012 | dev->mem_timer.function = mem_timer; | |
2013 | dev->mem_timer.data = (unsigned long) dev; | |
2014 | ||
2015 | qib_init_qpn_table(dd, &dev->qpn_table); | |
2016 | ||
2017 | /* | |
2018 | * The top ib_qib_lkey_table_size bits are used to index the | |
2019 | * table. The lower 8 bits can be owned by the user (copied from | |
2020 | * the LKEY). The remaining bits act as a generation number or tag. | |
2021 | */ | |
2022 | spin_lock_init(&dev->lk_table.lock); | |
2023 | dev->lk_table.max = 1 << ib_qib_lkey_table_size; | |
2024 | lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table); | |
2025 | dev->lk_table.table = (struct qib_mregion **) | |
2026 | __get_free_pages(GFP_KERNEL, get_order(lk_tab_size)); | |
2027 | if (dev->lk_table.table == NULL) { | |
2028 | ret = -ENOMEM; | |
2029 | goto err_lk; | |
2030 | } | |
2031 | memset(dev->lk_table.table, 0, lk_tab_size); | |
2032 | INIT_LIST_HEAD(&dev->pending_mmaps); | |
2033 | spin_lock_init(&dev->pending_lock); | |
2034 | dev->mmap_offset = PAGE_SIZE; | |
2035 | spin_lock_init(&dev->mmap_offset_lock); | |
2036 | INIT_LIST_HEAD(&dev->piowait); | |
2037 | INIT_LIST_HEAD(&dev->dmawait); | |
2038 | INIT_LIST_HEAD(&dev->txwait); | |
2039 | INIT_LIST_HEAD(&dev->memwait); | |
2040 | INIT_LIST_HEAD(&dev->txreq_free); | |
2041 | ||
2042 | if (ppd->sdma_descq_cnt) { | |
2043 | dev->pio_hdrs = dma_alloc_coherent(&dd->pcidev->dev, | |
2044 | ppd->sdma_descq_cnt * | |
2045 | sizeof(struct qib_pio_header), | |
2046 | &dev->pio_hdrs_phys, | |
2047 | GFP_KERNEL); | |
2048 | if (!dev->pio_hdrs) { | |
2049 | ret = -ENOMEM; | |
2050 | goto err_hdrs; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | for (i = 0; i < ppd->sdma_descq_cnt; i++) { | |
2055 | struct qib_verbs_txreq *tx; | |
2056 | ||
2057 | tx = kzalloc(sizeof *tx, GFP_KERNEL); | |
2058 | if (!tx) { | |
2059 | ret = -ENOMEM; | |
2060 | goto err_tx; | |
2061 | } | |
2062 | tx->hdr_inx = i; | |
2063 | list_add(&tx->txreq.list, &dev->txreq_free); | |
2064 | } | |
2065 | ||
2066 | /* | |
2067 | * The system image GUID is supposed to be the same for all | |
2068 | * IB HCAs in a single system but since there can be other | |
2069 | * device types in the system, we can't be sure this is unique. | |
2070 | */ | |
2071 | if (!ib_qib_sys_image_guid) | |
2072 | ib_qib_sys_image_guid = ppd->guid; | |
2073 | ||
2074 | strlcpy(ibdev->name, "qib%d", IB_DEVICE_NAME_MAX); | |
2075 | ibdev->owner = THIS_MODULE; | |
2076 | ibdev->node_guid = ppd->guid; | |
2077 | ibdev->uverbs_abi_ver = QIB_UVERBS_ABI_VERSION; | |
2078 | ibdev->uverbs_cmd_mask = | |
2079 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
2080 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
2081 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
2082 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
2083 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
2084 | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | | |
2085 | (1ull << IB_USER_VERBS_CMD_MODIFY_AH) | | |
2086 | (1ull << IB_USER_VERBS_CMD_QUERY_AH) | | |
2087 | (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | | |
2088 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
2089 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
2090 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
2091 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
2092 | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | | |
2093 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
2094 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | | |
2095 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | | |
2096 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
2097 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
2098 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
2099 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
2100 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | | |
2101 | (1ull << IB_USER_VERBS_CMD_POST_RECV) | | |
2102 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
2103 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | | |
2104 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
2105 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
2106 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | | |
2107 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | | |
2108 | (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); | |
2109 | ibdev->node_type = RDMA_NODE_IB_CA; | |
2110 | ibdev->phys_port_cnt = dd->num_pports; | |
2111 | ibdev->num_comp_vectors = 1; | |
2112 | ibdev->dma_device = &dd->pcidev->dev; | |
2113 | ibdev->query_device = qib_query_device; | |
2114 | ibdev->modify_device = qib_modify_device; | |
2115 | ibdev->query_port = qib_query_port; | |
2116 | ibdev->modify_port = qib_modify_port; | |
2117 | ibdev->query_pkey = qib_query_pkey; | |
2118 | ibdev->query_gid = qib_query_gid; | |
2119 | ibdev->alloc_ucontext = qib_alloc_ucontext; | |
2120 | ibdev->dealloc_ucontext = qib_dealloc_ucontext; | |
2121 | ibdev->alloc_pd = qib_alloc_pd; | |
2122 | ibdev->dealloc_pd = qib_dealloc_pd; | |
2123 | ibdev->create_ah = qib_create_ah; | |
2124 | ibdev->destroy_ah = qib_destroy_ah; | |
2125 | ibdev->modify_ah = qib_modify_ah; | |
2126 | ibdev->query_ah = qib_query_ah; | |
2127 | ibdev->create_srq = qib_create_srq; | |
2128 | ibdev->modify_srq = qib_modify_srq; | |
2129 | ibdev->query_srq = qib_query_srq; | |
2130 | ibdev->destroy_srq = qib_destroy_srq; | |
2131 | ibdev->create_qp = qib_create_qp; | |
2132 | ibdev->modify_qp = qib_modify_qp; | |
2133 | ibdev->query_qp = qib_query_qp; | |
2134 | ibdev->destroy_qp = qib_destroy_qp; | |
2135 | ibdev->post_send = qib_post_send; | |
2136 | ibdev->post_recv = qib_post_receive; | |
2137 | ibdev->post_srq_recv = qib_post_srq_receive; | |
2138 | ibdev->create_cq = qib_create_cq; | |
2139 | ibdev->destroy_cq = qib_destroy_cq; | |
2140 | ibdev->resize_cq = qib_resize_cq; | |
2141 | ibdev->poll_cq = qib_poll_cq; | |
2142 | ibdev->req_notify_cq = qib_req_notify_cq; | |
2143 | ibdev->get_dma_mr = qib_get_dma_mr; | |
2144 | ibdev->reg_phys_mr = qib_reg_phys_mr; | |
2145 | ibdev->reg_user_mr = qib_reg_user_mr; | |
2146 | ibdev->dereg_mr = qib_dereg_mr; | |
2147 | ibdev->alloc_fast_reg_mr = qib_alloc_fast_reg_mr; | |
2148 | ibdev->alloc_fast_reg_page_list = qib_alloc_fast_reg_page_list; | |
2149 | ibdev->free_fast_reg_page_list = qib_free_fast_reg_page_list; | |
2150 | ibdev->alloc_fmr = qib_alloc_fmr; | |
2151 | ibdev->map_phys_fmr = qib_map_phys_fmr; | |
2152 | ibdev->unmap_fmr = qib_unmap_fmr; | |
2153 | ibdev->dealloc_fmr = qib_dealloc_fmr; | |
2154 | ibdev->attach_mcast = qib_multicast_attach; | |
2155 | ibdev->detach_mcast = qib_multicast_detach; | |
2156 | ibdev->process_mad = qib_process_mad; | |
2157 | ibdev->mmap = qib_mmap; | |
2158 | ibdev->dma_ops = &qib_dma_mapping_ops; | |
2159 | ||
2160 | snprintf(ibdev->node_desc, sizeof(ibdev->node_desc), | |
2161 | QIB_IDSTR " %s", init_utsname()->nodename); | |
2162 | ||
2163 | ret = ib_register_device(ibdev, qib_create_port_files); | |
2164 | if (ret) | |
2165 | goto err_reg; | |
2166 | ||
2167 | ret = qib_create_agents(dev); | |
2168 | if (ret) | |
2169 | goto err_agents; | |
2170 | ||
2171 | if (qib_verbs_register_sysfs(dd)) | |
2172 | goto err_class; | |
2173 | ||
2174 | goto bail; | |
2175 | ||
2176 | err_class: | |
2177 | qib_free_agents(dev); | |
2178 | err_agents: | |
2179 | ib_unregister_device(ibdev); | |
2180 | err_reg: | |
2181 | err_tx: | |
2182 | while (!list_empty(&dev->txreq_free)) { | |
2183 | struct list_head *l = dev->txreq_free.next; | |
2184 | struct qib_verbs_txreq *tx; | |
2185 | ||
2186 | list_del(l); | |
2187 | tx = list_entry(l, struct qib_verbs_txreq, txreq.list); | |
2188 | kfree(tx); | |
2189 | } | |
2190 | if (ppd->sdma_descq_cnt) | |
2191 | dma_free_coherent(&dd->pcidev->dev, | |
2192 | ppd->sdma_descq_cnt * | |
2193 | sizeof(struct qib_pio_header), | |
2194 | dev->pio_hdrs, dev->pio_hdrs_phys); | |
2195 | err_hdrs: | |
2196 | free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size)); | |
2197 | err_lk: | |
2198 | kfree(dev->qp_table); | |
2199 | err_qpt: | |
2200 | qib_dev_err(dd, "cannot register verbs: %d!\n", -ret); | |
2201 | bail: | |
2202 | return ret; | |
2203 | } | |
2204 | ||
2205 | void qib_unregister_ib_device(struct qib_devdata *dd) | |
2206 | { | |
2207 | struct qib_ibdev *dev = &dd->verbs_dev; | |
2208 | struct ib_device *ibdev = &dev->ibdev; | |
2209 | u32 qps_inuse; | |
2210 | unsigned lk_tab_size; | |
2211 | ||
2212 | qib_verbs_unregister_sysfs(dd); | |
2213 | ||
2214 | qib_free_agents(dev); | |
2215 | ||
2216 | ib_unregister_device(ibdev); | |
2217 | ||
2218 | if (!list_empty(&dev->piowait)) | |
2219 | qib_dev_err(dd, "piowait list not empty!\n"); | |
2220 | if (!list_empty(&dev->dmawait)) | |
2221 | qib_dev_err(dd, "dmawait list not empty!\n"); | |
2222 | if (!list_empty(&dev->txwait)) | |
2223 | qib_dev_err(dd, "txwait list not empty!\n"); | |
2224 | if (!list_empty(&dev->memwait)) | |
2225 | qib_dev_err(dd, "memwait list not empty!\n"); | |
2226 | if (dev->dma_mr) | |
2227 | qib_dev_err(dd, "DMA MR not NULL!\n"); | |
2228 | ||
2229 | qps_inuse = qib_free_all_qps(dd); | |
2230 | if (qps_inuse) | |
2231 | qib_dev_err(dd, "QP memory leak! %u still in use\n", | |
2232 | qps_inuse); | |
2233 | ||
2234 | del_timer_sync(&dev->mem_timer); | |
2235 | qib_free_qpn_table(&dev->qpn_table); | |
2236 | while (!list_empty(&dev->txreq_free)) { | |
2237 | struct list_head *l = dev->txreq_free.next; | |
2238 | struct qib_verbs_txreq *tx; | |
2239 | ||
2240 | list_del(l); | |
2241 | tx = list_entry(l, struct qib_verbs_txreq, txreq.list); | |
2242 | kfree(tx); | |
2243 | } | |
2244 | if (dd->pport->sdma_descq_cnt) | |
2245 | dma_free_coherent(&dd->pcidev->dev, | |
2246 | dd->pport->sdma_descq_cnt * | |
2247 | sizeof(struct qib_pio_header), | |
2248 | dev->pio_hdrs, dev->pio_hdrs_phys); | |
2249 | lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table); | |
2250 | free_pages((unsigned long) dev->lk_table.table, | |
2251 | get_order(lk_tab_size)); | |
2252 | kfree(dev->qp_table); | |
2253 | } |