projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
RDMA/nes: Support the new memory registration API
[deliverable/linux.git] / drivers / infiniband / hw / nes / nes_verbs.c
1 /*
2 * Copyright (c) 2006 - 2011 Intel Corporation. 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
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/random.h>
37 #include <linux/highmem.h>
38 #include <linux/slab.h>
39 #include <asm/byteorder.h>
40
41 #include <rdma/ib_verbs.h>
42 #include <rdma/iw_cm.h>
43 #include <rdma/ib_user_verbs.h>
44
45 #include "nes.h"
46
47 #include <rdma/ib_umem.h>
48
49 atomic_t mod_qp_timouts;
50 atomic_t qps_created;
51 atomic_t sw_qps_destroyed;
52
53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
54 static int nes_dereg_mr(struct ib_mr *ib_mr);
55
56 /**
57 * nes_alloc_mw
58 */
59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type)
60 {
61 struct nes_pd *nespd = to_nespd(ibpd);
62 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
63 struct nes_device *nesdev = nesvnic->nesdev;
64 struct nes_adapter *nesadapter = nesdev->nesadapter;
65 struct nes_cqp_request *cqp_request;
66 struct nes_mr *nesmr;
67 struct ib_mw *ibmw;
68 struct nes_hw_cqp_wqe *cqp_wqe;
69 int ret;
70 u32 stag;
71 u32 stag_index = 0;
72 u32 next_stag_index = 0;
73 u32 driver_key = 0;
74 u8 stag_key = 0;
75
76 if (type != IB_MW_TYPE_1)
77 return ERR_PTR(-EINVAL);
78
79 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
80 stag_key = (u8)next_stag_index;
81
82 driver_key = 0;
83
84 next_stag_index >>= 8;
85 next_stag_index %= nesadapter->max_mr;
86
87 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
88 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
89 if (ret) {
90 return ERR_PTR(ret);
91 }
92
93 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
94 if (!nesmr) {
95 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
96 return ERR_PTR(-ENOMEM);
97 }
98
99 stag = stag_index << 8;
100 stag |= driver_key;
101 stag += (u32)stag_key;
102
103 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
104 stag, stag_index);
105
106 /* Register the region with the adapter */
107 cqp_request = nes_get_cqp_request(nesdev);
108 if (cqp_request == NULL) {
109 kfree(nesmr);
110 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
111 return ERR_PTR(-ENOMEM);
112 }
113
114 cqp_request->waiting = 1;
115 cqp_wqe = &cqp_request->cqp_wqe;
116
117 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
118 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
119 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
120 NES_CQP_STAG_REM_ACC_EN);
121
122 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
123 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
124 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
125
126 atomic_set(&cqp_request->refcount, 2);
127 nes_post_cqp_request(nesdev, cqp_request);
128
129 /* Wait for CQP */
130 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
131 NES_EVENT_TIMEOUT);
132 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
133 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
134 stag, ret, cqp_request->major_code, cqp_request->minor_code);
135 if ((!ret) || (cqp_request->major_code)) {
136 nes_put_cqp_request(nesdev, cqp_request);
137 kfree(nesmr);
138 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
139 if (!ret) {
140 return ERR_PTR(-ETIME);
141 } else {
142 return ERR_PTR(-ENOMEM);
143 }
144 }
145 nes_put_cqp_request(nesdev, cqp_request);
146
147 nesmr->ibmw.rkey = stag;
148 nesmr->mode = IWNES_MEMREG_TYPE_MW;
149 ibmw = &nesmr->ibmw;
150 nesmr->pbl_4k = 0;
151 nesmr->pbls_used = 0;
152
153 return ibmw;
154 }
155
156
157 /**
158 * nes_dealloc_mw
159 */
160 static int nes_dealloc_mw(struct ib_mw *ibmw)
161 {
162 struct nes_mr *nesmr = to_nesmw(ibmw);
163 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
164 struct nes_device *nesdev = nesvnic->nesdev;
165 struct nes_adapter *nesadapter = nesdev->nesadapter;
166 struct nes_hw_cqp_wqe *cqp_wqe;
167 struct nes_cqp_request *cqp_request;
168 int err = 0;
169 int ret;
170
171 /* Deallocate the window with the adapter */
172 cqp_request = nes_get_cqp_request(nesdev);
173 if (cqp_request == NULL) {
174 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
175 return -ENOMEM;
176 }
177 cqp_request->waiting = 1;
178 cqp_wqe = &cqp_request->cqp_wqe;
179 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
180 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
181 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
182
183 atomic_set(&cqp_request->refcount, 2);
184 nes_post_cqp_request(nesdev, cqp_request);
185
186 /* Wait for CQP */
187 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
188 ibmw->rkey);
189 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
190 NES_EVENT_TIMEOUT);
191 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
192 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
193 ret, cqp_request->major_code, cqp_request->minor_code);
194 if (!ret)
195 err = -ETIME;
196 else if (cqp_request->major_code)
197 err = -EIO;
198
199 nes_put_cqp_request(nesdev, cqp_request);
200
201 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
202 (ibmw->rkey & 0x0fffff00) >> 8);
203 kfree(nesmr);
204
205 return err;
206 }
207
208
209 /**
210 * nes_bind_mw
211 */
212 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
213 struct ib_mw_bind *ibmw_bind)
214 {
215 u64 u64temp;
216 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
217 struct nes_device *nesdev = nesvnic->nesdev;
218 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
219 struct nes_qp *nesqp = to_nesqp(ibqp);
220 struct nes_hw_qp_wqe *wqe;
221 unsigned long flags = 0;
222 u32 head;
223 u32 wqe_misc = 0;
224 u32 qsize;
225
226 if (nesqp->ibqp_state > IB_QPS_RTS)
227 return -EINVAL;
228
229 spin_lock_irqsave(&nesqp->lock, flags);
230
231 head = nesqp->hwqp.sq_head;
232 qsize = nesqp->hwqp.sq_tail;
233
234 /* Check for SQ overflow */
235 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
236 spin_unlock_irqrestore(&nesqp->lock, flags);
237 return -ENOMEM;
238 }
239
240 wqe = &nesqp->hwqp.sq_vbase[head];
241 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
242 nes_fill_init_qp_wqe(wqe, nesqp, head);
243 u64temp = ibmw_bind->wr_id;
244 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
245 wqe_misc = NES_IWARP_SQ_OP_BIND;
246
247 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
248
249 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
250 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
251
252 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_WRITE)
253 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
254 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_READ)
255 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
256
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
258 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX,
259 ibmw_bind->bind_info.mr->lkey);
260 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
261 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
262 ibmw_bind->bind_info.length);
263 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
264 u64temp = (u64)ibmw_bind->bind_info.addr;
265 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
266
267 head++;
268 if (head >= qsize)
269 head = 0;
270
271 nesqp->hwqp.sq_head = head;
272 barrier();
273
274 nes_write32(nesdev->regs+NES_WQE_ALLOC,
275 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
276
277 spin_unlock_irqrestore(&nesqp->lock, flags);
278
279 return 0;
280 }
281
282
283 /*
284 * nes_alloc_fast_mr
285 */
286 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
287 u32 stag, u32 page_count)
288 {
289 struct nes_hw_cqp_wqe *cqp_wqe;
290 struct nes_cqp_request *cqp_request;
291 unsigned long flags;
292 int ret;
293 struct nes_adapter *nesadapter = nesdev->nesadapter;
294 u32 opcode = 0;
295 u16 major_code;
296 u64 region_length = page_count * PAGE_SIZE;
297
298
299 cqp_request = nes_get_cqp_request(nesdev);
300 if (cqp_request == NULL) {
301 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
302 return -ENOMEM;
303 }
304 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
305 "region_length = %llu\n",
306 page_count, region_length);
307 cqp_request->waiting = 1;
308 cqp_wqe = &cqp_request->cqp_wqe;
309
310 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
311 if (nesadapter->free_4kpbl > 0) {
312 nesadapter->free_4kpbl--;
313 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
314 } else {
315 /* No 4kpbl's available: */
316 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
317 nes_debug(NES_DBG_MR, "Out of Pbls\n");
318 nes_free_cqp_request(nesdev, cqp_request);
319 return -ENOMEM;
320 }
321
322 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
323 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
324 NES_CQP_STAG_REM_ACC_EN;
325 /*
326 * The current OFED API does not support the zero based TO option.
327 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
328 * the API does not support that ability to have the MR set for local
329 * access only when created and not allow the SQ op to override. Given
330 * this the remote enable must be set here.
331 */
332
333 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
334 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
335 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
336
337 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
338 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
339 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
340 cpu_to_le32(nespd->pd_id & 0x00007fff);
341
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
343 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
344 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
345 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
346 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
347 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
348 barrier();
349
350 atomic_set(&cqp_request->refcount, 2);
351 nes_post_cqp_request(nesdev, cqp_request);
352
353 /* Wait for CQP */
354 ret = wait_event_timeout(cqp_request->waitq,
355 (0 != cqp_request->request_done),
356 NES_EVENT_TIMEOUT);
357
358 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
359 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
360 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
361 cqp_request->minor_code);
362 major_code = cqp_request->major_code;
363 nes_put_cqp_request(nesdev, cqp_request);
364
365 if (!ret || major_code) {
366 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
367 nesadapter->free_4kpbl++;
368 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
369 }
370
371 if (!ret)
372 return -ETIME;
373 else if (major_code)
374 return -EIO;
375 return 0;
376 }
377
378 /*
379 * nes_alloc_mr
380 */
381 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
382 enum ib_mr_type mr_type,
383 u32 max_num_sg)
384 {
385 struct nes_pd *nespd = to_nespd(ibpd);
386 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
387 struct nes_device *nesdev = nesvnic->nesdev;
388 struct nes_adapter *nesadapter = nesdev->nesadapter;
389
390 u32 next_stag_index;
391 u8 stag_key = 0;
392 u32 driver_key = 0;
393 int err = 0;
394 u32 stag_index = 0;
395 struct nes_mr *nesmr;
396 u32 stag;
397 int ret;
398 struct ib_mr *ibmr;
399
400 if (mr_type != IB_MR_TYPE_MEM_REG)
401 return ERR_PTR(-EINVAL);
402
403 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
404 return ERR_PTR(-E2BIG);
405
406 /*
407 * Note: Set to always use a fixed length single page entry PBL. This is to allow
408 * for the fast_reg_mr operation to always know the size of the PBL.
409 */
410 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
411 return ERR_PTR(-E2BIG);
412
413 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
414 stag_key = (u8)next_stag_index;
415 next_stag_index >>= 8;
416 next_stag_index %= nesadapter->max_mr;
417
418 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
419 nesadapter->max_mr, &stag_index,
420 &next_stag_index, NES_RESOURCE_FAST_MR);
421 if (err)
422 return ERR_PTR(err);
423
424 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
425 if (!nesmr) {
426 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
427 return ERR_PTR(-ENOMEM);
428 }
429
430 stag = stag_index << 8;
431 stag |= driver_key;
432 stag += (u32)stag_key;
433
434 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
435 stag, stag_index);
436
437 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
438
439 if (ret == 0) {
440 nesmr->ibmr.rkey = stag;
441 nesmr->ibmr.lkey = stag;
442 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
443 ibmr = &nesmr->ibmr;
444 } else {
445 kfree(nesmr);
446 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
447 return ERR_PTR(-ENOMEM);
448 }
449
450 nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
451 max_num_sg * sizeof(u64),
452 &nesmr->paddr);
453 if (!nesmr->paddr)
454 goto err;
455
456 nesmr->max_pages = max_num_sg;
457
458 return ibmr;
459
460 err:
461 nes_dereg_mr(ibmr);
462
463 return ERR_PTR(-ENOMEM);
464 }
465
466 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
467 {
468 struct nes_mr *nesmr = to_nesmr(ibmr);
469
470 if (unlikely(nesmr->npages == nesmr->max_pages))
471 return -ENOMEM;
472
473 nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
474
475 return 0;
476 }
477
478 static int nes_map_mr_sg(struct ib_mr *ibmr,
479 struct scatterlist *sg,
480 int sg_nents)
481 {
482 struct nes_mr *nesmr = to_nesmr(ibmr);
483
484 nesmr->npages = 0;
485
486 return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
487 }
488
489 /*
490 * nes_alloc_fast_reg_page_list
491 */
492 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
493 struct ib_device *ibdev,
494 int page_list_len)
495 {
496 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
497 struct nes_device *nesdev = nesvnic->nesdev;
498 struct ib_fast_reg_page_list *pifrpl;
499 struct nes_ib_fast_reg_page_list *pnesfrpl;
500
501 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
502 return ERR_PTR(-E2BIG);
503 /*
504 * Allocate the ib_fast_reg_page_list structure, the
505 * nes_fast_bpl structure, and the PLB table.
506 */
507 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
508 page_list_len * sizeof(u64), GFP_KERNEL);
509
510 if (!pnesfrpl)
511 return ERR_PTR(-ENOMEM);
512
513 pifrpl = &pnesfrpl->ibfrpl;
514 pifrpl->page_list = &pnesfrpl->pbl;
515 pifrpl->max_page_list_len = page_list_len;
516 /*
517 * Allocate the WQE PBL
518 */
519 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
520 page_list_len * sizeof(u64),
521 &pnesfrpl->nes_wqe_pbl.paddr);
522
523 if (!pnesfrpl->nes_wqe_pbl.kva) {
524 kfree(pnesfrpl);
525 return ERR_PTR(-ENOMEM);
526 }
527 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
528 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
529 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
530 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
531 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
532
533 return pifrpl;
534 }
535
536 /*
537 * nes_free_fast_reg_page_list
538 */
539 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
540 {
541 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
542 struct nes_device *nesdev = nesvnic->nesdev;
543 struct nes_ib_fast_reg_page_list *pnesfrpl;
544
545 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
546 /*
547 * Free the WQE PBL.
548 */
549 pci_free_consistent(nesdev->pcidev,
550 pifrpl->max_page_list_len * sizeof(u64),
551 pnesfrpl->nes_wqe_pbl.kva,
552 pnesfrpl->nes_wqe_pbl.paddr);
553 /*
554 * Free the PBL structure
555 */
556 kfree(pnesfrpl);
557 }
558
559 /**
560 * nes_query_device
561 */
562 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
563 struct ib_udata *uhw)
564 {
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct nes_device *nesdev = nesvnic->nesdev;
567 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
568
569 if (uhw->inlen || uhw->outlen)
570 return -EINVAL;
571
572 memset(props, 0, sizeof(*props));
573 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
574
575 props->fw_ver = nesdev->nesadapter->firmware_version;
576 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
577 props->vendor_id = nesdev->nesadapter->vendor_id;
578 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
579 props->hw_ver = nesdev->nesadapter->hw_rev;
580 props->max_mr_size = 0x80000000;
581 props->max_qp = nesibdev->max_qp;
582 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
583 props->max_sge = nesdev->nesadapter->max_sge;
584 props->max_cq = nesibdev->max_cq;
585 props->max_cqe = nesdev->nesadapter->max_cqe;
586 props->max_mr = nesibdev->max_mr;
587 props->max_mw = nesibdev->max_mr;
588 props->max_pd = nesibdev->max_pd;
589 props->max_sge_rd = 1;
590 switch (nesdev->nesadapter->max_irrq_wr) {
591 case 0:
592 props->max_qp_rd_atom = 2;
593 break;
594 case 1:
595 props->max_qp_rd_atom = 8;
596 break;
597 case 2:
598 props->max_qp_rd_atom = 32;
599 break;
600 case 3:
601 props->max_qp_rd_atom = 64;
602 break;
603 default:
604 props->max_qp_rd_atom = 0;
605 }
606 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
607 props->atomic_cap = IB_ATOMIC_NONE;
608 props->max_map_per_fmr = 1;
609
610 return 0;
611 }
612
613
614 /**
615 * nes_query_port
616 */
617 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
618 {
619 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
620 struct net_device *netdev = nesvnic->netdev;
621
622 memset(props, 0, sizeof(*props));
623
624 props->max_mtu = IB_MTU_4096;
625
626 if (netdev->mtu >= 4096)
627 props->active_mtu = IB_MTU_4096;
628 else if (netdev->mtu >= 2048)
629 props->active_mtu = IB_MTU_2048;
630 else if (netdev->mtu >= 1024)
631 props->active_mtu = IB_MTU_1024;
632 else if (netdev->mtu >= 512)
633 props->active_mtu = IB_MTU_512;
634 else
635 props->active_mtu = IB_MTU_256;
636
637 props->lid = 1;
638 props->lmc = 0;
639 props->sm_lid = 0;
640 props->sm_sl = 0;
641 if (netif_queue_stopped(netdev))
642 props->state = IB_PORT_DOWN;
643 else if (nesvnic->linkup)
644 props->state = IB_PORT_ACTIVE;
645 else
646 props->state = IB_PORT_DOWN;
647 props->phys_state = 0;
648 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
649 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
650 props->gid_tbl_len = 1;
651 props->pkey_tbl_len = 1;
652 props->qkey_viol_cntr = 0;
653 props->active_width = IB_WIDTH_4X;
654 props->active_speed = IB_SPEED_SDR;
655 props->max_msg_sz = 0x80000000;
656
657 return 0;
658 }
659
660 /**
661 * nes_query_pkey
662 */
663 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
664 {
665 *pkey = 0;
666 return 0;
667 }
668
669
670 /**
671 * nes_query_gid
672 */
673 static int nes_query_gid(struct ib_device *ibdev, u8 port,
674 int index, union ib_gid *gid)
675 {
676 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
677
678 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
679 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
680
681 return 0;
682 }
683
684
685 /**
686 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
687 * of all objects associated with a particular user-mode client.
688 */
689 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
690 struct ib_udata *udata)
691 {
692 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
693 struct nes_device *nesdev = nesvnic->nesdev;
694 struct nes_adapter *nesadapter = nesdev->nesadapter;
695 struct nes_alloc_ucontext_req req;
696 struct nes_alloc_ucontext_resp uresp;
697 struct nes_ucontext *nes_ucontext;
698 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
699
700
701 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
702 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
703 return ERR_PTR(-EINVAL);
704 }
705
706 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
707 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
708 req.userspace_ver, NES_ABI_USERSPACE_VER);
709 return ERR_PTR(-EINVAL);
710 }
711
712
713 memset(&uresp, 0, sizeof uresp);
714
715 uresp.max_qps = nesibdev->max_qp;
716 uresp.max_pds = nesibdev->max_pd;
717 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
718 uresp.virtwq = nesadapter->virtwq;
719 uresp.kernel_ver = NES_ABI_KERNEL_VER;
720
721 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
722 if (!nes_ucontext)
723 return ERR_PTR(-ENOMEM);
724
725 nes_ucontext->nesdev = nesdev;
726 nes_ucontext->mmap_wq_offset = uresp.max_pds;
727 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
728 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
729 PAGE_SIZE;
730
731
732 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
733 kfree(nes_ucontext);
734 return ERR_PTR(-EFAULT);
735 }
736
737 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
738 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
739 atomic_set(&nes_ucontext->usecnt, 1);
740 return &nes_ucontext->ibucontext;
741 }
742
743
744 /**
745 * nes_dealloc_ucontext
746 */
747 static int nes_dealloc_ucontext(struct ib_ucontext *context)
748 {
749 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
750 /* struct nes_device *nesdev = nesvnic->nesdev; */
751 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
752
753 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
754 return 0;
755 kfree(nes_ucontext);
756 return 0;
757 }
758
759
760 /**
761 * nes_mmap
762 */
763 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
764 {
765 unsigned long index;
766 struct nes_vnic *nesvnic = to_nesvnic(context->device);
767 struct nes_device *nesdev = nesvnic->nesdev;
768 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
769 struct nes_ucontext *nes_ucontext;
770 struct nes_qp *nesqp;
771
772 nes_ucontext = to_nesucontext(context);
773
774
775 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
776 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
777 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
778 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
779 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
780 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
781 return -EFAULT;
782 }
783 nesqp = nes_ucontext->mmap_nesqp[index];
784 if (nesqp == NULL) {
785 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
786 return -EFAULT;
787 }
788 if (remap_pfn_range(vma, vma->vm_start,
789 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
790 vma->vm_end - vma->vm_start,
791 vma->vm_page_prot)) {
792 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
793 return -EAGAIN;
794 }
795 vma->vm_private_data = nesqp;
796 return 0;
797 } else {
798 index = vma->vm_pgoff;
799 if (!test_bit(index, nes_ucontext->allocated_doorbells))
800 return -EFAULT;
801
802 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
803 if (io_remap_pfn_range(vma, vma->vm_start,
804 (nesdev->doorbell_start +
805 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
806 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
807 return -EAGAIN;
808 vma->vm_private_data = nes_ucontext;
809 return 0;
810 }
811
812 return -ENOSYS;
813 }
814
815
816 /**
817 * nes_alloc_pd
818 */
819 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
820 struct ib_ucontext *context, struct ib_udata *udata)
821 {
822 struct nes_pd *nespd;
823 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
824 struct nes_device *nesdev = nesvnic->nesdev;
825 struct nes_adapter *nesadapter = nesdev->nesadapter;
826 struct nes_ucontext *nesucontext;
827 struct nes_alloc_pd_resp uresp;
828 u32 pd_num = 0;
829 int err;
830
831 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
832 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
833 netdev_refcnt_read(nesvnic->netdev));
834
835 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
836 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
837 if (err) {
838 return ERR_PTR(err);
839 }
840
841 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
842 if (!nespd) {
843 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
844 return ERR_PTR(-ENOMEM);
845 }
846
847 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
848 nespd, nesvnic->nesibdev->ibdev.name);
849
850 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
851
852 if (context) {
853 nesucontext = to_nesucontext(context);
854 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
855 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
856 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
857 nespd->mmap_db_index, nespd->pd_id);
858 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
859 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
860 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
861 kfree(nespd);
862 return ERR_PTR(-ENOMEM);
863 }
864
865 uresp.pd_id = nespd->pd_id;
866 uresp.mmap_db_index = nespd->mmap_db_index;
867 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
868 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
869 kfree(nespd);
870 return ERR_PTR(-EFAULT);
871 }
872
873 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
874 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
875 nesucontext->first_free_db = nespd->mmap_db_index + 1;
876 }
877
878 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
879 return &nespd->ibpd;
880 }
881
882
883 /**
884 * nes_dealloc_pd
885 */
886 static int nes_dealloc_pd(struct ib_pd *ibpd)
887 {
888 struct nes_ucontext *nesucontext;
889 struct nes_pd *nespd = to_nespd(ibpd);
890 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
891 struct nes_device *nesdev = nesvnic->nesdev;
892 struct nes_adapter *nesadapter = nesdev->nesadapter;
893
894 if ((ibpd->uobject) && (ibpd->uobject->context)) {
895 nesucontext = to_nesucontext(ibpd->uobject->context);
896 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
897 nespd->mmap_db_index);
898 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
899 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
900 if (nesucontext->first_free_db > nespd->mmap_db_index) {
901 nesucontext->first_free_db = nespd->mmap_db_index;
902 }
903 }
904
905 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
906 nespd->pd_id, nespd);
907 nes_free_resource(nesadapter, nesadapter->allocated_pds,
908 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
909 kfree(nespd);
910
911 return 0;
912 }
913
914
915 /**
916 * nes_create_ah
917 */
918 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
919 {
920 return ERR_PTR(-ENOSYS);
921 }
922
923
924 /**
925 * nes_destroy_ah
926 */
927 static int nes_destroy_ah(struct ib_ah *ah)
928 {
929 return -ENOSYS;
930 }
931
932
933 /**
934 * nes_get_encoded_size
935 */
936 static inline u8 nes_get_encoded_size(int *size)
937 {
938 u8 encoded_size = 0;
939 if (*size <= 32) {
940 *size = 32;
941 encoded_size = 1;
942 } else if (*size <= 128) {
943 *size = 128;
944 encoded_size = 2;
945 } else if (*size <= 512) {
946 *size = 512;
947 encoded_size = 3;
948 }
949 return (encoded_size);
950 }
951
952
953
954 /**
955 * nes_setup_virt_qp
956 */
957 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
958 struct nes_vnic *nesvnic, int sq_size, int rq_size)
959 {
960 unsigned long flags;
961 void *mem;
962 __le64 *pbl = NULL;
963 __le64 *tpbl;
964 __le64 *pblbuffer;
965 struct nes_device *nesdev = nesvnic->nesdev;
966 struct nes_adapter *nesadapter = nesdev->nesadapter;
967 u32 pbl_entries;
968 u8 rq_pbl_entries;
969 u8 sq_pbl_entries;
970
971 pbl_entries = nespbl->pbl_size >> 3;
972 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
973 nespbl->pbl_size, pbl_entries,
974 (void *)nespbl->pbl_vbase,
975 (unsigned long) nespbl->pbl_pbase);
976 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
977 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
978 /* the first pbl to be fro the rq_vbase... */
979 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
980 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
981 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
982 if (!nespbl->page) {
983 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
984 kfree(nespbl);
985 return -ENOMEM;
986 }
987
988 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
989 nesqp->page = nespbl->page;
990 if (!nesqp->hwqp.sq_vbase) {
991 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
992 kfree(nespbl);
993 return -ENOMEM;
994 }
995
996 /* Now to get to sq.. we need to calculate how many */
997 /* PBL entries were used by the rq.. */
998 pbl += sq_pbl_entries;
999 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1000 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1001 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1002
1003 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1004 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1005 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1006 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1007 if (!nesadapter->free_256pbl) {
1008 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1009 nespbl->pbl_pbase);
1010 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1011 kunmap(nesqp->page);
1012 kfree(nespbl);
1013 return -ENOMEM;
1014 }
1015 nesadapter->free_256pbl--;
1016 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1017
1018 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1019 pblbuffer = nesqp->pbl_vbase;
1020 if (!nesqp->pbl_vbase) {
1021 /* memory allocated during nes_reg_user_mr() */
1022 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1023 nespbl->pbl_pbase);
1024 kfree(nespbl);
1025 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1026 nesadapter->free_256pbl++;
1027 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1028 kunmap(nesqp->page);
1029 return -ENOMEM;
1030 }
1031 memset(nesqp->pbl_vbase, 0, 256);
1032 /* fill in the page address in the pbl buffer.. */
1033 tpbl = pblbuffer + 16;
1034 pbl = (__le64 *)nespbl->pbl_vbase;
1035 while (sq_pbl_entries--)
1036 *tpbl++ = *pbl++;
1037 tpbl = pblbuffer;
1038 while (rq_pbl_entries--)
1039 *tpbl++ = *pbl++;
1040
1041 /* done with memory allocated during nes_reg_user_mr() */
1042 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1043 nespbl->pbl_pbase);
1044 kfree(nespbl);
1045
1046 nesqp->qp_mem_size =
1047 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1048 /* Round up to a multiple of a page */
1049 nesqp->qp_mem_size += PAGE_SIZE - 1;
1050 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1051
1052 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1053 &nesqp->hwqp.q2_pbase);
1054
1055 if (!mem) {
1056 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1057 nesqp->pbl_vbase = NULL;
1058 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1059 nesadapter->free_256pbl++;
1060 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1061 kunmap(nesqp->page);
1062 return -ENOMEM;
1063 }
1064 nesqp->sq_kmapped = 1;
1065 nesqp->hwqp.q2_vbase = mem;
1066 mem += 256;
1067 memset(nesqp->hwqp.q2_vbase, 0, 256);
1068 nesqp->nesqp_context = mem;
1069 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1070 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1071
1072 return 0;
1073 }
1074
1075
1076 /**
1077 * nes_setup_mmap_qp
1078 */
1079 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1080 int sq_size, int rq_size)
1081 {
1082 void *mem;
1083 struct nes_device *nesdev = nesvnic->nesdev;
1084
1085 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1086 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1087 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1088 256; /* this is Q2 */
1089 /* Round up to a multiple of a page */
1090 nesqp->qp_mem_size += PAGE_SIZE - 1;
1091 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1092
1093 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1094 &nesqp->hwqp.sq_pbase);
1095 if (!mem)
1096 return -ENOMEM;
1097 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1098 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1099 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1100
1101 memset(mem, 0, nesqp->qp_mem_size);
1102
1103 nesqp->hwqp.sq_vbase = mem;
1104 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1105
1106 nesqp->hwqp.rq_vbase = mem;
1107 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1108 sizeof(struct nes_hw_qp_wqe) * sq_size;
1109 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1110
1111 nesqp->hwqp.q2_vbase = mem;
1112 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1113 sizeof(struct nes_hw_qp_wqe) * rq_size;
1114 mem += 256;
1115 memset(nesqp->hwqp.q2_vbase, 0, 256);
1116
1117 nesqp->nesqp_context = mem;
1118 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1119 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1120 return 0;
1121 }
1122
1123
1124 /**
1125 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1126 */
1127 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1128 struct nes_qp *nesqp, int virt_wqs)
1129 {
1130 unsigned long flags;
1131 struct nes_adapter *nesadapter = nesdev->nesadapter;
1132 if (!virt_wqs) {
1133 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1134 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1135 }else {
1136 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1137 nesadapter->free_256pbl++;
1138 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1139 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1140 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1141 nesqp->pbl_vbase = NULL;
1142 if (nesqp->sq_kmapped) {
1143 nesqp->sq_kmapped = 0;
1144 kunmap(nesqp->page);
1145 }
1146 }
1147 }
1148
1149
1150 /**
1151 * nes_create_qp
1152 */
1153 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1154 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1155 {
1156 u64 u64temp= 0;
1157 u64 u64nesqp = 0;
1158 struct nes_pd *nespd = to_nespd(ibpd);
1159 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1160 struct nes_device *nesdev = nesvnic->nesdev;
1161 struct nes_adapter *nesadapter = nesdev->nesadapter;
1162 struct nes_qp *nesqp;
1163 struct nes_cq *nescq;
1164 struct nes_ucontext *nes_ucontext;
1165 struct nes_hw_cqp_wqe *cqp_wqe;
1166 struct nes_cqp_request *cqp_request;
1167 struct nes_create_qp_req req;
1168 struct nes_create_qp_resp uresp;
1169 struct nes_pbl *nespbl = NULL;
1170 u32 qp_num = 0;
1171 u32 opcode = 0;
1172 /* u32 counter = 0; */
1173 void *mem;
1174 unsigned long flags;
1175 int ret;
1176 int err;
1177 int virt_wqs = 0;
1178 int sq_size;
1179 int rq_size;
1180 u8 sq_encoded_size;
1181 u8 rq_encoded_size;
1182 /* int counter; */
1183
1184 if (init_attr->create_flags)
1185 return ERR_PTR(-EINVAL);
1186
1187 atomic_inc(&qps_created);
1188 switch (init_attr->qp_type) {
1189 case IB_QPT_RC:
1190 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1191 init_attr->cap.max_inline_data = 0;
1192 } else {
1193 init_attr->cap.max_inline_data = 64;
1194 }
1195 sq_size = init_attr->cap.max_send_wr;
1196 rq_size = init_attr->cap.max_recv_wr;
1197
1198 /* check if the encoded sizes are OK or not... */
1199 sq_encoded_size = nes_get_encoded_size(&sq_size);
1200 rq_encoded_size = nes_get_encoded_size(&rq_size);
1201
1202 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1203 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1204 rq_size, sq_size);
1205 return ERR_PTR(-EINVAL);
1206 }
1207
1208 init_attr->cap.max_send_wr = sq_size -2;
1209 init_attr->cap.max_recv_wr = rq_size -1;
1210 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1211
1212 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1213 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1214 if (ret) {
1215 return ERR_PTR(ret);
1216 }
1217
1218 /* Need 512 (actually now 1024) byte alignment on this structure */
1219 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1220 if (!mem) {
1221 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1222 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1223 return ERR_PTR(-ENOMEM);
1224 }
1225 u64nesqp = (unsigned long)mem;
1226 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1227 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1228 u64nesqp &= ~u64temp;
1229 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1230 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1231 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1232 nesqp->allocated_buffer = mem;
1233
1234 if (udata) {
1235 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1236 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1237 kfree(nesqp->allocated_buffer);
1238 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1239 return ERR_PTR(-EFAULT);
1240 }
1241 if (req.user_wqe_buffers) {
1242 virt_wqs = 1;
1243 }
1244 if (req.user_qp_buffer)
1245 nesqp->nesuqp_addr = req.user_qp_buffer;
1246 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1247 nesqp->user_mode = 1;
1248 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1249 if (virt_wqs) {
1250 err = 1;
1251 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1252 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1253 list_del(&nespbl->list);
1254 err = 0;
1255 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1256 nespbl, nespbl->user_base);
1257 break;
1258 }
1259 }
1260 if (err) {
1261 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1262 (long long unsigned int)req.user_wqe_buffers);
1263 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1264 kfree(nesqp->allocated_buffer);
1265 return ERR_PTR(-EFAULT);
1266 }
1267 }
1268
1269 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1270 nesqp->mmap_sq_db_index =
1271 find_next_zero_bit(nes_ucontext->allocated_wqs,
1272 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1273 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1274 nespd->mmap_db_index); */
1275 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1276 nes_debug(NES_DBG_QP,
1277 "db index > max user regions, failing create QP\n");
1278 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1279 if (virt_wqs) {
1280 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1281 nespbl->pbl_pbase);
1282 kfree(nespbl);
1283 }
1284 kfree(nesqp->allocated_buffer);
1285 return ERR_PTR(-ENOMEM);
1286 }
1287 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1288 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1289 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1290 } else {
1291 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1292 kfree(nesqp->allocated_buffer);
1293 return ERR_PTR(-EFAULT);
1294 }
1295 }
1296 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1297 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1298 if (err) {
1299 nes_debug(NES_DBG_QP,
1300 "error geting qp mem code = %d\n", err);
1301 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1302 kfree(nesqp->allocated_buffer);
1303 return ERR_PTR(-ENOMEM);
1304 }
1305
1306 nesqp->hwqp.sq_size = sq_size;
1307 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1308 nesqp->hwqp.sq_head = 1;
1309 nesqp->hwqp.rq_size = rq_size;
1310 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1311 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1312 (void *)nesqp->nesqp_context_pbase);
1313 */
1314 nesqp->hwqp.qp_id = qp_num;
1315 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1316 nesqp->nespd = nespd;
1317
1318 nescq = to_nescq(init_attr->send_cq);
1319 nesqp->nesscq = nescq;
1320 nescq = to_nescq(init_attr->recv_cq);
1321 nesqp->nesrcq = nescq;
1322
1323 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1324 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1325 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1326 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1327 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1328 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1329 if (!udata) {
1330 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1331 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1332 }
1333 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1334 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1335 u64temp = (u64)nesqp->hwqp.sq_pbase;
1336 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1337 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1338
1339
1340 if (!virt_wqs) {
1341 u64temp = (u64)nesqp->hwqp.sq_pbase;
1342 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1343 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1344 u64temp = (u64)nesqp->hwqp.rq_pbase;
1345 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1346 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1347 } else {
1348 u64temp = (u64)nesqp->pbl_pbase;
1349 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1350 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1351 }
1352
1353 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1354 nesvnic->next_qp_nic_index,
1355 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1356 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1357 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1358 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1359 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1360 nesvnic->next_qp_nic_index++;
1361 if ((nesvnic->next_qp_nic_index > 3) ||
1362 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1363 nesvnic->next_qp_nic_index = 0;
1364 }
1365 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1366
1367 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1368 u64temp = (u64)nesqp->hwqp.q2_pbase;
1369 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1370 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1371 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1372 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1373 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1374 NES_QPCONTEXT_ORDIRD_AAH |
1375 ((((u32)nesadapter->max_irrq_wr) <<
1376 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1377 if (disable_mpa_crc) {
1378 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1379 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1380 }
1381
1382
1383 /* Create the QP */
1384 cqp_request = nes_get_cqp_request(nesdev);
1385 if (cqp_request == NULL) {
1386 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1387 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1388 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1389 kfree(nesqp->allocated_buffer);
1390 return ERR_PTR(-ENOMEM);
1391 }
1392 cqp_request->waiting = 1;
1393 cqp_wqe = &cqp_request->cqp_wqe;
1394
1395 if (!virt_wqs) {
1396 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1397 NES_CQP_QP_IWARP_STATE_IDLE;
1398 } else {
1399 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1400 NES_CQP_QP_IWARP_STATE_IDLE;
1401 }
1402 opcode |= NES_CQP_QP_CQS_VALID;
1403 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1404 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1405 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1406
1407 u64temp = (u64)nesqp->nesqp_context_pbase;
1408 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1409
1410 atomic_set(&cqp_request->refcount, 2);
1411 nes_post_cqp_request(nesdev, cqp_request);
1412
1413 /* Wait for CQP */
1414 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1415 nesqp->hwqp.qp_id);
1416 ret = wait_event_timeout(cqp_request->waitq,
1417 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1418 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1419 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1420 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1421 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1422 cqp_request->major_code, cqp_request->minor_code);
1423 if ((!ret) || (cqp_request->major_code)) {
1424 nes_put_cqp_request(nesdev, cqp_request);
1425 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1426 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1427 kfree(nesqp->allocated_buffer);
1428 if (!ret) {
1429 return ERR_PTR(-ETIME);
1430 } else {
1431 return ERR_PTR(-EIO);
1432 }
1433 }
1434
1435 nes_put_cqp_request(nesdev, cqp_request);
1436
1437 if (ibpd->uobject) {
1438 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1439 uresp.mmap_rq_db_index = 0;
1440 uresp.actual_sq_size = sq_size;
1441 uresp.actual_rq_size = rq_size;
1442 uresp.qp_id = nesqp->hwqp.qp_id;
1443 uresp.nes_drv_opt = nes_drv_opt;
1444 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1445 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1446 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1447 kfree(nesqp->allocated_buffer);
1448 return ERR_PTR(-EFAULT);
1449 }
1450 }
1451
1452 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1453 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1454 spin_lock_init(&nesqp->lock);
1455 nes_add_ref(&nesqp->ibqp);
1456 break;
1457 default:
1458 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1459 return ERR_PTR(-EINVAL);
1460 }
1461
1462 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1463 init_timer(&nesqp->terminate_timer);
1464 nesqp->terminate_timer.function = nes_terminate_timeout;
1465 nesqp->terminate_timer.data = (unsigned long)nesqp;
1466
1467 /* update the QP table */
1468 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1469 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1470 netdev_refcnt_read(nesvnic->netdev));
1471
1472 return &nesqp->ibqp;
1473 }
1474
1475 /**
1476 * nes_clean_cq
1477 */
1478 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1479 {
1480 u32 cq_head;
1481 u32 lo;
1482 u32 hi;
1483 u64 u64temp;
1484 unsigned long flags = 0;
1485
1486 spin_lock_irqsave(&nescq->lock, flags);
1487
1488 cq_head = nescq->hw_cq.cq_head;
1489 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1490 rmb();
1491 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1492 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1493 u64temp = (((u64)hi) << 32) | ((u64)lo);
1494 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1495 if (u64temp == (u64)(unsigned long)nesqp) {
1496 /* Zero the context value so cqe will be ignored */
1497 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1498 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1499 }
1500
1501 if (++cq_head >= nescq->hw_cq.cq_size)
1502 cq_head = 0;
1503 }
1504
1505 spin_unlock_irqrestore(&nescq->lock, flags);
1506 }
1507
1508
1509 /**
1510 * nes_destroy_qp
1511 */
1512 static int nes_destroy_qp(struct ib_qp *ibqp)
1513 {
1514 struct nes_qp *nesqp = to_nesqp(ibqp);
1515 struct nes_ucontext *nes_ucontext;
1516 struct ib_qp_attr attr;
1517 struct iw_cm_id *cm_id;
1518 struct iw_cm_event cm_event;
1519 int ret = 0;
1520
1521 atomic_inc(&sw_qps_destroyed);
1522 nesqp->destroyed = 1;
1523
1524 /* Blow away the connection if it exists. */
1525 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1526 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1527 attr.qp_state = IB_QPS_ERR;
1528 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1529 }
1530
1531 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1532 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1533 cm_id = nesqp->cm_id;
1534 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1535 cm_event.status = -ETIMEDOUT;
1536 cm_event.local_addr = cm_id->local_addr;
1537 cm_event.remote_addr = cm_id->remote_addr;
1538 cm_event.private_data = NULL;
1539 cm_event.private_data_len = 0;
1540
1541 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1542 "QP%u. cm_id = %p, refcount = %u. \n",
1543 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1544
1545 cm_id->rem_ref(cm_id);
1546 ret = cm_id->event_handler(cm_id, &cm_event);
1547 if (ret)
1548 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1549 }
1550
1551 if (nesqp->user_mode) {
1552 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1553 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1554 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1555 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1556 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1557 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1558 }
1559 }
1560 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1561 nesqp->sq_kmapped = 0;
1562 kunmap(nesqp->page);
1563 }
1564 } else {
1565 /* Clean any pending completions from the cq(s) */
1566 if (nesqp->nesscq)
1567 nes_clean_cq(nesqp, nesqp->nesscq);
1568
1569 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1570 nes_clean_cq(nesqp, nesqp->nesrcq);
1571 }
1572 nes_rem_ref(&nesqp->ibqp);
1573 return 0;
1574 }
1575
1576
1577 /**
1578 * nes_create_cq
1579 */
1580 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1581 const struct ib_cq_init_attr *attr,
1582 struct ib_ucontext *context,
1583 struct ib_udata *udata)
1584 {
1585 int entries = attr->cqe;
1586 u64 u64temp;
1587 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1588 struct nes_device *nesdev = nesvnic->nesdev;
1589 struct nes_adapter *nesadapter = nesdev->nesadapter;
1590 struct nes_cq *nescq;
1591 struct nes_ucontext *nes_ucontext = NULL;
1592 struct nes_cqp_request *cqp_request;
1593 void *mem = NULL;
1594 struct nes_hw_cqp_wqe *cqp_wqe;
1595 struct nes_pbl *nespbl = NULL;
1596 struct nes_create_cq_req req;
1597 struct nes_create_cq_resp resp;
1598 u32 cq_num = 0;
1599 u32 opcode = 0;
1600 u32 pbl_entries = 1;
1601 int err;
1602 unsigned long flags;
1603 int ret;
1604
1605 if (attr->flags)
1606 return ERR_PTR(-EINVAL);
1607
1608 if (entries > nesadapter->max_cqe)
1609 return ERR_PTR(-EINVAL);
1610
1611 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1612 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1613 if (err) {
1614 return ERR_PTR(err);
1615 }
1616
1617 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1618 if (!nescq) {
1619 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1620 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1621 return ERR_PTR(-ENOMEM);
1622 }
1623
1624 nescq->hw_cq.cq_size = max(entries + 1, 5);
1625 nescq->hw_cq.cq_number = cq_num;
1626 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1627
1628
1629 if (context) {
1630 nes_ucontext = to_nesucontext(context);
1631 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1632 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1633 kfree(nescq);
1634 return ERR_PTR(-EFAULT);
1635 }
1636 nesvnic->mcrq_ucontext = nes_ucontext;
1637 nes_ucontext->mcrqf = req.mcrqf;
1638 if (nes_ucontext->mcrqf) {
1639 if (nes_ucontext->mcrqf & 0x80000000)
1640 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1641 else if (nes_ucontext->mcrqf & 0x40000000)
1642 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1643 else
1644 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1645 nescq->mcrqf = nes_ucontext->mcrqf;
1646 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1647 }
1648 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1649 (unsigned long)req.user_cq_buffer, entries);
1650 err = 1;
1651 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1652 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1653 list_del(&nespbl->list);
1654 err = 0;
1655 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1656 nespbl);
1657 break;
1658 }
1659 }
1660 if (err) {
1661 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1662 kfree(nescq);
1663 return ERR_PTR(-EFAULT);
1664 }
1665
1666 pbl_entries = nespbl->pbl_size >> 3;
1667 nescq->cq_mem_size = 0;
1668 } else {
1669 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1670 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1671 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1672
1673 /* allocate the physical buffer space */
1674 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1675 &nescq->hw_cq.cq_pbase);
1676 if (!mem) {
1677 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1678 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1679 kfree(nescq);
1680 return ERR_PTR(-ENOMEM);
1681 }
1682
1683 nescq->hw_cq.cq_vbase = mem;
1684 nescq->hw_cq.cq_head = 0;
1685 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1686 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1687 (u32)nescq->hw_cq.cq_pbase);
1688 }
1689
1690 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1691 spin_lock_init(&nescq->lock);
1692
1693 /* send CreateCQ request to CQP */
1694 cqp_request = nes_get_cqp_request(nesdev);
1695 if (cqp_request == NULL) {
1696 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1697 if (!context)
1698 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1699 nescq->hw_cq.cq_pbase);
1700 else {
1701 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1702 nespbl->pbl_vbase, nespbl->pbl_pbase);
1703 kfree(nespbl);
1704 }
1705
1706 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1707 kfree(nescq);
1708 return ERR_PTR(-ENOMEM);
1709 }
1710 cqp_request->waiting = 1;
1711 cqp_wqe = &cqp_request->cqp_wqe;
1712
1713 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1714 NES_CQP_CQ_CHK_OVERFLOW |
1715 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1716
1717 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1718
1719 if (pbl_entries != 1) {
1720 if (pbl_entries > 32) {
1721 /* use 4k pbl */
1722 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1723 if (nesadapter->free_4kpbl == 0) {
1724 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1725 nes_free_cqp_request(nesdev, cqp_request);
1726 if (!context)
1727 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1728 nescq->hw_cq.cq_pbase);
1729 else {
1730 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1731 nespbl->pbl_vbase, nespbl->pbl_pbase);
1732 kfree(nespbl);
1733 }
1734 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1735 kfree(nescq);
1736 return ERR_PTR(-ENOMEM);
1737 } else {
1738 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1739 nescq->virtual_cq = 2;
1740 nesadapter->free_4kpbl--;
1741 }
1742 } else {
1743 /* use 256 byte pbl */
1744 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1745 if (nesadapter->free_256pbl == 0) {
1746 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1747 nes_free_cqp_request(nesdev, cqp_request);
1748 if (!context)
1749 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1750 nescq->hw_cq.cq_pbase);
1751 else {
1752 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1753 nespbl->pbl_vbase, nespbl->pbl_pbase);
1754 kfree(nespbl);
1755 }
1756 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1757 kfree(nescq);
1758 return ERR_PTR(-ENOMEM);
1759 } else {
1760 opcode |= NES_CQP_CQ_VIRT;
1761 nescq->virtual_cq = 1;
1762 nesadapter->free_256pbl--;
1763 }
1764 }
1765 }
1766
1767 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1768
1769 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1770 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1771 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1772 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1773
1774 if (context) {
1775 if (pbl_entries != 1)
1776 u64temp = (u64)nespbl->pbl_pbase;
1777 else
1778 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1779 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1780 nes_ucontext->mmap_db_index[0]);
1781 } else {
1782 u64temp = (u64)nescq->hw_cq.cq_pbase;
1783 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1784 }
1785 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1786 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1787 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1788 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1789 cpu_to_le32((u32)(u64temp >> 1));
1790 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1791 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1792
1793 atomic_set(&cqp_request->refcount, 2);
1794 nes_post_cqp_request(nesdev, cqp_request);
1795
1796 /* Wait for CQP */
1797 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1798 nescq->hw_cq.cq_number);
1799 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1800 NES_EVENT_TIMEOUT * 2);
1801 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1802 nescq->hw_cq.cq_number, ret);
1803 if ((!ret) || (cqp_request->major_code)) {
1804 nes_put_cqp_request(nesdev, cqp_request);
1805 if (!context)
1806 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1807 nescq->hw_cq.cq_pbase);
1808 else {
1809 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1810 nespbl->pbl_vbase, nespbl->pbl_pbase);
1811 kfree(nespbl);
1812 }
1813 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1814 kfree(nescq);
1815 return ERR_PTR(-EIO);
1816 }
1817 nes_put_cqp_request(nesdev, cqp_request);
1818
1819 if (context) {
1820 /* free the nespbl */
1821 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1822 nespbl->pbl_pbase);
1823 kfree(nespbl);
1824 resp.cq_id = nescq->hw_cq.cq_number;
1825 resp.cq_size = nescq->hw_cq.cq_size;
1826 resp.mmap_db_index = 0;
1827 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1828 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1829 kfree(nescq);
1830 return ERR_PTR(-EFAULT);
1831 }
1832 }
1833
1834 return &nescq->ibcq;
1835 }
1836
1837
1838 /**
1839 * nes_destroy_cq
1840 */
1841 static int nes_destroy_cq(struct ib_cq *ib_cq)
1842 {
1843 struct nes_cq *nescq;
1844 struct nes_device *nesdev;
1845 struct nes_vnic *nesvnic;
1846 struct nes_adapter *nesadapter;
1847 struct nes_hw_cqp_wqe *cqp_wqe;
1848 struct nes_cqp_request *cqp_request;
1849 unsigned long flags;
1850 u32 opcode = 0;
1851 int ret;
1852
1853 if (ib_cq == NULL)
1854 return 0;
1855
1856 nescq = to_nescq(ib_cq);
1857 nesvnic = to_nesvnic(ib_cq->device);
1858 nesdev = nesvnic->nesdev;
1859 nesadapter = nesdev->nesadapter;
1860
1861 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1862
1863 /* Send DestroyCQ request to CQP */
1864 cqp_request = nes_get_cqp_request(nesdev);
1865 if (cqp_request == NULL) {
1866 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1867 return -ENOMEM;
1868 }
1869 cqp_request->waiting = 1;
1870 cqp_wqe = &cqp_request->cqp_wqe;
1871 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1872 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1873 if (nescq->virtual_cq == 1) {
1874 nesadapter->free_256pbl++;
1875 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1876 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1877 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1878 }
1879 } else if (nescq->virtual_cq == 2) {
1880 nesadapter->free_4kpbl++;
1881 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1882 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1883 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1884 }
1885 opcode |= NES_CQP_CQ_4KB_CHUNK;
1886 }
1887
1888 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1889
1890 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1891 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1892 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1893 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1894 if (!nescq->mcrqf)
1895 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1896
1897 atomic_set(&cqp_request->refcount, 2);
1898 nes_post_cqp_request(nesdev, cqp_request);
1899
1900 /* Wait for CQP */
1901 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1902 nescq->hw_cq.cq_number);
1903 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1904 NES_EVENT_TIMEOUT);
1905 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1906 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1907 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1908 cqp_request->minor_code);
1909 if (!ret) {
1910 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1911 nescq->hw_cq.cq_number);
1912 ret = -ETIME;
1913 } else if (cqp_request->major_code) {
1914 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1915 nescq->hw_cq.cq_number);
1916 ret = -EIO;
1917 } else {
1918 ret = 0;
1919 }
1920 nes_put_cqp_request(nesdev, cqp_request);
1921
1922 if (nescq->cq_mem_size)
1923 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1924 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1925 kfree(nescq);
1926
1927 return ret;
1928 }
1929
1930 /**
1931 * root_256
1932 */
1933 static u32 root_256(struct nes_device *nesdev,
1934 struct nes_root_vpbl *root_vpbl,
1935 struct nes_root_vpbl *new_root,
1936 u16 pbl_count_4k)
1937 {
1938 u64 leaf_pbl;
1939 int i, j, k;
1940
1941 if (pbl_count_4k == 1) {
1942 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1943 512, &new_root->pbl_pbase);
1944
1945 if (new_root->pbl_vbase == NULL)
1946 return 0;
1947
1948 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1949 for (i = 0; i < 16; i++) {
1950 new_root->pbl_vbase[i].pa_low =
1951 cpu_to_le32((u32)leaf_pbl);
1952 new_root->pbl_vbase[i].pa_high =
1953 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1954 leaf_pbl += 256;
1955 }
1956 } else {
1957 for (i = 3; i >= 0; i--) {
1958 j = i * 16;
1959 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1960 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1961 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1962 << 32);
1963 for (k = 1; k < 16; k++) {
1964 leaf_pbl += 256;
1965 root_vpbl->pbl_vbase[j + k].pa_low =
1966 cpu_to_le32((u32)leaf_pbl);
1967 root_vpbl->pbl_vbase[j + k].pa_high =
1968 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1969 }
1970 }
1971 }
1972
1973 return 1;
1974 }
1975
1976
1977 /**
1978 * nes_reg_mr
1979 */
1980 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1981 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1982 dma_addr_t single_buffer, u16 pbl_count_4k,
1983 u16 residual_page_count_4k, int acc, u64 *iova_start,
1984 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1985 {
1986 struct nes_hw_cqp_wqe *cqp_wqe;
1987 struct nes_cqp_request *cqp_request;
1988 unsigned long flags;
1989 int ret;
1990 struct nes_adapter *nesadapter = nesdev->nesadapter;
1991 uint pg_cnt = 0;
1992 u16 pbl_count_256 = 0;
1993 u16 pbl_count = 0;
1994 u8 use_256_pbls = 0;
1995 u8 use_4k_pbls = 0;
1996 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1997 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1998 u32 opcode = 0;
1999 u16 major_code;
2000
2001 /* Register the region with the adapter */
2002 cqp_request = nes_get_cqp_request(nesdev);
2003 if (cqp_request == NULL) {
2004 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2005 return -ENOMEM;
2006 }
2007 cqp_request->waiting = 1;
2008 cqp_wqe = &cqp_request->cqp_wqe;
2009
2010 if (pbl_count_4k) {
2011 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2012
2013 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
2014 pbl_count_256 = (pg_cnt + 31) / 32;
2015 if (pg_cnt <= 32) {
2016 if (pbl_count_256 <= nesadapter->free_256pbl)
2017 use_256_pbls = 1;
2018 else if (pbl_count_4k <= nesadapter->free_4kpbl)
2019 use_4k_pbls = 1;
2020 } else if (pg_cnt <= 2048) {
2021 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
2022 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
2023 use_4k_pbls = 1;
2024 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
2025 use_256_pbls = 1;
2026 use_two_level = 1;
2027 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2028 use_4k_pbls = 1;
2029 }
2030 } else {
2031 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
2032 use_4k_pbls = 1;
2033 }
2034
2035 if (use_256_pbls) {
2036 pbl_count = pbl_count_256;
2037 nesadapter->free_256pbl -= pbl_count + use_two_level;
2038 } else if (use_4k_pbls) {
2039 pbl_count = pbl_count_4k;
2040 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2041 } else {
2042 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2043 nes_debug(NES_DBG_MR, "Out of Pbls\n");
2044 nes_free_cqp_request(nesdev, cqp_request);
2045 return -ENOMEM;
2046 }
2047
2048 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2049 }
2050
2051 if (use_256_pbls && use_two_level) {
2052 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2053 if (new_root.pbl_pbase != 0)
2054 root_vpbl = &new_root;
2055 } else {
2056 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2057 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2058 use_256_pbls = 0;
2059
2060 if (pbl_count_4k == 1)
2061 use_two_level = 0;
2062 pbl_count = pbl_count_4k;
2063
2064 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2065 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2066 use_4k_pbls = 1;
2067 }
2068 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2069
2070 if (use_4k_pbls == 0)
2071 return -ENOMEM;
2072 }
2073 }
2074
2075 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2076 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2077 if (acc & IB_ACCESS_LOCAL_WRITE)
2078 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2079 if (acc & IB_ACCESS_REMOTE_WRITE)
2080 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2081 if (acc & IB_ACCESS_REMOTE_READ)
2082 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2083 if (acc & IB_ACCESS_MW_BIND)
2084 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2085
2086 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2087 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2088 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2089 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2090
2091 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2092 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2093 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2094 cpu_to_le32(nespd->pd_id & 0x00007fff);
2095 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2096
2097 if (pbl_count == 0) {
2098 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2099 } else {
2100 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2101 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2102 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2103
2104 if (use_4k_pbls)
2105 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2106 }
2107 barrier();
2108
2109 atomic_set(&cqp_request->refcount, 2);
2110 nes_post_cqp_request(nesdev, cqp_request);
2111
2112 /* Wait for CQP */
2113 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2114 NES_EVENT_TIMEOUT);
2115 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2116 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2117 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2118 major_code = cqp_request->major_code;
2119 nes_put_cqp_request(nesdev, cqp_request);
2120
2121 if ((!ret || major_code) && pbl_count != 0) {
2122 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2123 if (use_256_pbls)
2124 nesadapter->free_256pbl += pbl_count + use_two_level;
2125 else if (use_4k_pbls)
2126 nesadapter->free_4kpbl += pbl_count + use_two_level;
2127 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2128 }
2129 if (new_root.pbl_pbase)
2130 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2131 new_root.pbl_pbase);
2132
2133 if (!ret)
2134 return -ETIME;
2135 else if (major_code)
2136 return -EIO;
2137
2138 *actual_pbl_cnt = pbl_count + use_two_level;
2139 *used_4k_pbls = use_4k_pbls;
2140 return 0;
2141 }
2142
2143
2144 /**
2145 * nes_reg_phys_mr
2146 */
2147 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2148 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2149 u64 * iova_start)
2150 {
2151 u64 region_length;
2152 struct nes_pd *nespd = to_nespd(ib_pd);
2153 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2154 struct nes_device *nesdev = nesvnic->nesdev;
2155 struct nes_adapter *nesadapter = nesdev->nesadapter;
2156 struct nes_mr *nesmr;
2157 struct ib_mr *ibmr;
2158 struct nes_vpbl vpbl;
2159 struct nes_root_vpbl root_vpbl;
2160 u32 stag;
2161 u32 i;
2162 unsigned long mask;
2163 u32 stag_index = 0;
2164 u32 next_stag_index = 0;
2165 u32 driver_key = 0;
2166 u32 root_pbl_index = 0;
2167 u32 cur_pbl_index = 0;
2168 int err = 0;
2169 int ret = 0;
2170 u16 pbl_count = 0;
2171 u8 single_page = 1;
2172 u8 stag_key = 0;
2173
2174 region_length = 0;
2175 vpbl.pbl_vbase = NULL;
2176 root_vpbl.pbl_vbase = NULL;
2177 root_vpbl.pbl_pbase = 0;
2178
2179 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2180 stag_key = (u8)next_stag_index;
2181
2182 driver_key = 0;
2183
2184 next_stag_index >>= 8;
2185 next_stag_index %= nesadapter->max_mr;
2186 if (num_phys_buf > (1024*512)) {
2187 return ERR_PTR(-E2BIG);
2188 }
2189
2190 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2191 return ERR_PTR(-EINVAL);
2192
2193 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2194 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2195 if (err) {
2196 return ERR_PTR(err);
2197 }
2198
2199 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2200 if (!nesmr) {
2201 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2202 return ERR_PTR(-ENOMEM);
2203 }
2204
2205 for (i = 0; i < num_phys_buf; i++) {
2206
2207 if ((i & 0x01FF) == 0) {
2208 if (root_pbl_index == 1) {
2209 /* Allocate the root PBL */
2210 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2211 &root_vpbl.pbl_pbase);
2212 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2213 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2214 if (!root_vpbl.pbl_vbase) {
2215 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2216 vpbl.pbl_pbase);
2217 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2218 kfree(nesmr);
2219 return ERR_PTR(-ENOMEM);
2220 }
2221 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2222 if (!root_vpbl.leaf_vpbl) {
2223 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2224 root_vpbl.pbl_pbase);
2225 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2226 vpbl.pbl_pbase);
2227 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2228 kfree(nesmr);
2229 return ERR_PTR(-ENOMEM);
2230 }
2231 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2232 root_vpbl.pbl_vbase[0].pa_high =
2233 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2234 root_vpbl.leaf_vpbl[0] = vpbl;
2235 }
2236 /* Allocate a 4K buffer for the PBL */
2237 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2238 &vpbl.pbl_pbase);
2239 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2240 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2241 if (!vpbl.pbl_vbase) {
2242 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2243 ibmr = ERR_PTR(-ENOMEM);
2244 kfree(nesmr);
2245 goto reg_phys_err;
2246 }
2247 /* Fill in the root table */
2248 if (1 <= root_pbl_index) {
2249 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2250 cpu_to_le32((u32)vpbl.pbl_pbase);
2251 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2252 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2253 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2254 }
2255 root_pbl_index++;
2256 cur_pbl_index = 0;
2257 }
2258
2259 mask = !buffer_list[i].size;
2260 if (i != 0)
2261 mask |= buffer_list[i].addr;
2262 if (i != num_phys_buf - 1)
2263 mask |= buffer_list[i].addr + buffer_list[i].size;
2264
2265 if (mask & ~PAGE_MASK) {
2266 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2267 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2268 ibmr = ERR_PTR(-EINVAL);
2269 kfree(nesmr);
2270 goto reg_phys_err;
2271 }
2272
2273 region_length += buffer_list[i].size;
2274 if ((i != 0) && (single_page)) {
2275 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2276 single_page = 0;
2277 }
2278 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2279 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2280 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2281 }
2282
2283 stag = stag_index << 8;
2284 stag |= driver_key;
2285 stag += (u32)stag_key;
2286
2287 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2288 " length = 0x%016lX, index = 0x%08X\n",
2289 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2290
2291 /* Make the leaf PBL the root if only one PBL */
2292 if (root_pbl_index == 1) {
2293 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2294 }
2295
2296 if (single_page) {
2297 pbl_count = 0;
2298 } else {
2299 pbl_count = root_pbl_index;
2300 }
2301 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2302 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2303 &nesmr->pbls_used, &nesmr->pbl_4k);
2304
2305 if (ret == 0) {
2306 nesmr->ibmr.rkey = stag;
2307 nesmr->ibmr.lkey = stag;
2308 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2309 ibmr = &nesmr->ibmr;
2310 } else {
2311 kfree(nesmr);
2312 ibmr = ERR_PTR(-ENOMEM);
2313 }
2314
2315 reg_phys_err:
2316 /* free the resources */
2317 if (root_pbl_index == 1) {
2318 /* single PBL case */
2319 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2320 } else {
2321 for (i=0; i<root_pbl_index; i++) {
2322 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2323 root_vpbl.leaf_vpbl[i].pbl_pbase);
2324 }
2325 kfree(root_vpbl.leaf_vpbl);
2326 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2327 root_vpbl.pbl_pbase);
2328 }
2329
2330 return ibmr;
2331 }
2332
2333
2334 /**
2335 * nes_get_dma_mr
2336 */
2337 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2338 {
2339 struct ib_phys_buf bl;
2340 u64 kva = 0;
2341
2342 nes_debug(NES_DBG_MR, "\n");
2343
2344 bl.size = (u64)0xffffffffffULL;
2345 bl.addr = 0;
2346 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2347 }
2348
2349
2350 /**
2351 * nes_reg_user_mr
2352 */
2353 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2354 u64 virt, int acc, struct ib_udata *udata)
2355 {
2356 u64 iova_start;
2357 __le64 *pbl;
2358 u64 region_length;
2359 dma_addr_t last_dma_addr = 0;
2360 dma_addr_t first_dma_addr = 0;
2361 struct nes_pd *nespd = to_nespd(pd);
2362 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2363 struct nes_device *nesdev = nesvnic->nesdev;
2364 struct nes_adapter *nesadapter = nesdev->nesadapter;
2365 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2366 struct scatterlist *sg;
2367 struct nes_ucontext *nes_ucontext;
2368 struct nes_pbl *nespbl;
2369 struct nes_mr *nesmr;
2370 struct ib_umem *region;
2371 struct nes_mem_reg_req req;
2372 struct nes_vpbl vpbl;
2373 struct nes_root_vpbl root_vpbl;
2374 int entry, page_index;
2375 int page_count = 0;
2376 int err, pbl_depth = 0;
2377 int chunk_pages;
2378 int ret;
2379 u32 stag;
2380 u32 stag_index = 0;
2381 u32 next_stag_index;
2382 u32 driver_key;
2383 u32 root_pbl_index = 0;
2384 u32 cur_pbl_index = 0;
2385 u32 skip_pages;
2386 u16 pbl_count;
2387 u8 single_page = 1;
2388 u8 stag_key;
2389 int first_page = 1;
2390
2391 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2392 if (IS_ERR(region)) {
2393 return (struct ib_mr *)region;
2394 }
2395
2396 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2397 " offset = %u, page size = %u.\n",
2398 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2399 ib_umem_offset(region), region->page_size);
2400
2401 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2402
2403 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2404 ib_umem_release(region);
2405 return ERR_PTR(-EFAULT);
2406 }
2407 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2408
2409 switch (req.reg_type) {
2410 case IWNES_MEMREG_TYPE_MEM:
2411 pbl_depth = 0;
2412 region_length = 0;
2413 vpbl.pbl_vbase = NULL;
2414 root_vpbl.pbl_vbase = NULL;
2415 root_vpbl.pbl_pbase = 0;
2416
2417 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2418 stag_key = (u8)next_stag_index;
2419
2420 driver_key = next_stag_index & 0x70000000;
2421
2422 next_stag_index >>= 8;
2423 next_stag_index %= nesadapter->max_mr;
2424
2425 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2426 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2427 if (err) {
2428 ib_umem_release(region);
2429 return ERR_PTR(err);
2430 }
2431
2432 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2433 if (!nesmr) {
2434 ib_umem_release(region);
2435 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2436 return ERR_PTR(-ENOMEM);
2437 }
2438 nesmr->region = region;
2439
2440 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2441 if (sg_dma_address(sg) & ~PAGE_MASK) {
2442 ib_umem_release(region);
2443 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2444 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2445 (unsigned int) sg_dma_address(sg));
2446 ibmr = ERR_PTR(-EINVAL);
2447 kfree(nesmr);
2448 goto reg_user_mr_err;
2449 }
2450
2451 if (!sg_dma_len(sg)) {
2452 ib_umem_release(region);
2453 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2454 stag_index);
2455 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2456 ibmr = ERR_PTR(-EINVAL);
2457 kfree(nesmr);
2458 goto reg_user_mr_err;
2459 }
2460
2461 region_length += sg_dma_len(sg);
2462 chunk_pages = sg_dma_len(sg) >> 12;
2463 region_length -= skip_pages << 12;
2464 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2465 skip_pages = 0;
2466 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2467 goto enough_pages;
2468 if ((page_count&0x01FF) == 0) {
2469 if (page_count >= 1024 * 512) {
2470 ib_umem_release(region);
2471 nes_free_resource(nesadapter,
2472 nesadapter->allocated_mrs, stag_index);
2473 kfree(nesmr);
2474 ibmr = ERR_PTR(-E2BIG);
2475 goto reg_user_mr_err;
2476 }
2477 if (root_pbl_index == 1) {
2478 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2479 8192, &root_vpbl.pbl_pbase);
2480 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2481 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2482 if (!root_vpbl.pbl_vbase) {
2483 ib_umem_release(region);
2484 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2485 vpbl.pbl_pbase);
2486 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2487 stag_index);
2488 kfree(nesmr);
2489 ibmr = ERR_PTR(-ENOMEM);
2490 goto reg_user_mr_err;
2491 }
2492 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2493 GFP_KERNEL);
2494 if (!root_vpbl.leaf_vpbl) {
2495 ib_umem_release(region);
2496 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2497 root_vpbl.pbl_pbase);
2498 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2499 vpbl.pbl_pbase);
2500 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2501 stag_index);
2502 kfree(nesmr);
2503 ibmr = ERR_PTR(-ENOMEM);
2504 goto reg_user_mr_err;
2505 }
2506 root_vpbl.pbl_vbase[0].pa_low =
2507 cpu_to_le32((u32)vpbl.pbl_pbase);
2508 root_vpbl.pbl_vbase[0].pa_high =
2509 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2510 root_vpbl.leaf_vpbl[0] = vpbl;
2511 }
2512 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2513 &vpbl.pbl_pbase);
2514 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2515 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2516 if (!vpbl.pbl_vbase) {
2517 ib_umem_release(region);
2518 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2519 ibmr = ERR_PTR(-ENOMEM);
2520 kfree(nesmr);
2521 goto reg_user_mr_err;
2522 }
2523 if (1 <= root_pbl_index) {
2524 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2525 cpu_to_le32((u32)vpbl.pbl_pbase);
2526 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2527 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2528 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2529 }
2530 root_pbl_index++;
2531 cur_pbl_index = 0;
2532 }
2533 if (single_page) {
2534 if (page_count != 0) {
2535 if ((last_dma_addr+4096) !=
2536 (sg_dma_address(sg)+
2537 (page_index*4096)))
2538 single_page = 0;
2539 last_dma_addr = sg_dma_address(sg)+
2540 (page_index*4096);
2541 } else {
2542 first_dma_addr = sg_dma_address(sg)+
2543 (page_index*4096);
2544 last_dma_addr = first_dma_addr;
2545 }
2546 }
2547
2548 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2549 cpu_to_le32((u32)(sg_dma_address(sg)+
2550 (page_index*4096)));
2551 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2552 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2553 (page_index*4096))) >> 32)));
2554 cur_pbl_index++;
2555 page_count++;
2556 }
2557 }
2558
2559 enough_pages:
2560 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2561 " stag_key=0x%08x\n",
2562 stag_index, driver_key, stag_key);
2563 stag = stag_index << 8;
2564 stag |= driver_key;
2565 stag += (u32)stag_key;
2566
2567 iova_start = virt;
2568 /* Make the leaf PBL the root if only one PBL */
2569 if (root_pbl_index == 1) {
2570 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2571 }
2572
2573 if (single_page) {
2574 pbl_count = 0;
2575 } else {
2576 pbl_count = root_pbl_index;
2577 first_dma_addr = 0;
2578 }
2579 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2580 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2581 stag, (unsigned int)iova_start,
2582 (unsigned int)region_length, stag_index,
2583 (unsigned long long)region->length, pbl_count);
2584 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2585 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2586 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2587
2588 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2589
2590 if (ret == 0) {
2591 nesmr->ibmr.rkey = stag;
2592 nesmr->ibmr.lkey = stag;
2593 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2594 ibmr = &nesmr->ibmr;
2595 } else {
2596 ib_umem_release(region);
2597 kfree(nesmr);
2598 ibmr = ERR_PTR(-ENOMEM);
2599 }
2600
2601 reg_user_mr_err:
2602 /* free the resources */
2603 if (root_pbl_index == 1) {
2604 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2605 vpbl.pbl_pbase);
2606 } else {
2607 for (page_index=0; page_index<root_pbl_index; page_index++) {
2608 pci_free_consistent(nesdev->pcidev, 4096,
2609 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2610 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2611 }
2612 kfree(root_vpbl.leaf_vpbl);
2613 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2614 root_vpbl.pbl_pbase);
2615 }
2616
2617 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2618
2619 return ibmr;
2620 case IWNES_MEMREG_TYPE_QP:
2621 case IWNES_MEMREG_TYPE_CQ:
2622 if (!region->length) {
2623 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2624 ib_umem_release(region);
2625 return ERR_PTR(-EINVAL);
2626 }
2627 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2628 if (!nespbl) {
2629 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2630 ib_umem_release(region);
2631 return ERR_PTR(-ENOMEM);
2632 }
2633 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2634 if (!nesmr) {
2635 ib_umem_release(region);
2636 kfree(nespbl);
2637 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2638 return ERR_PTR(-ENOMEM);
2639 }
2640 nesmr->region = region;
2641 nes_ucontext = to_nesucontext(pd->uobject->context);
2642 pbl_depth = region->length >> 12;
2643 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2644 nespbl->pbl_size = pbl_depth*sizeof(u64);
2645 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2646 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2647 } else {
2648 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2649 }
2650
2651 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2652 nespbl->pbl_size, pbl_depth);
2653 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2654 &nespbl->pbl_pbase);
2655 if (!pbl) {
2656 ib_umem_release(region);
2657 kfree(nesmr);
2658 kfree(nespbl);
2659 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2660 return ERR_PTR(-ENOMEM);
2661 }
2662
2663 nespbl->pbl_vbase = (u64 *)pbl;
2664 nespbl->user_base = start;
2665 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2666 " pbl_vbase=%p user_base=0x%lx\n",
2667 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2668 (void *) nespbl->pbl_vbase, nespbl->user_base);
2669
2670 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2671 chunk_pages = sg_dma_len(sg) >> 12;
2672 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2673 if (first_page) {
2674 nespbl->page = sg_page(sg);
2675 first_page = 0;
2676 }
2677
2678 for (page_index = 0; page_index < chunk_pages; page_index++) {
2679 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2680 (sg_dma_address(sg)+
2681 (page_index*4096)));
2682 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2683 (sg_dma_address(sg)+
2684 (page_index*4096)))>>32);
2685 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2686 (unsigned long long)*pbl,
2687 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2688 pbl++;
2689 }
2690 }
2691
2692 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2693 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2694 } else {
2695 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2696 }
2697 nesmr->ibmr.rkey = -1;
2698 nesmr->ibmr.lkey = -1;
2699 nesmr->mode = req.reg_type;
2700 return &nesmr->ibmr;
2701 }
2702
2703 ib_umem_release(region);
2704 return ERR_PTR(-ENOSYS);
2705 }
2706
2707
2708 /**
2709 * nes_dereg_mr
2710 */
2711 static int nes_dereg_mr(struct ib_mr *ib_mr)
2712 {
2713 struct nes_mr *nesmr = to_nesmr(ib_mr);
2714 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2715 struct nes_device *nesdev = nesvnic->nesdev;
2716 struct nes_adapter *nesadapter = nesdev->nesadapter;
2717 struct nes_hw_cqp_wqe *cqp_wqe;
2718 struct nes_cqp_request *cqp_request;
2719 unsigned long flags;
2720 int ret;
2721 u16 major_code;
2722 u16 minor_code;
2723
2724
2725 if (nesmr->pages)
2726 pci_free_consistent(nesdev->pcidev,
2727 nesmr->max_pages * sizeof(u64),
2728 nesmr->pages,
2729 nesmr->paddr);
2730
2731 if (nesmr->region) {
2732 ib_umem_release(nesmr->region);
2733 }
2734 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2735 kfree(nesmr);
2736 return 0;
2737 }
2738
2739 /* Deallocate the region with the adapter */
2740
2741 cqp_request = nes_get_cqp_request(nesdev);
2742 if (cqp_request == NULL) {
2743 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2744 return -ENOMEM;
2745 }
2746 cqp_request->waiting = 1;
2747 cqp_wqe = &cqp_request->cqp_wqe;
2748
2749 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2750 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2751 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2752 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2753 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2754
2755 atomic_set(&cqp_request->refcount, 2);
2756 nes_post_cqp_request(nesdev, cqp_request);
2757
2758 /* Wait for CQP */
2759 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2760 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2761 NES_EVENT_TIMEOUT);
2762 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2763 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2764 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2765
2766 major_code = cqp_request->major_code;
2767 minor_code = cqp_request->minor_code;
2768
2769 nes_put_cqp_request(nesdev, cqp_request);
2770
2771 if (!ret) {
2772 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2773 " ib_mr=%p, rkey = 0x%08X\n",
2774 ib_mr, ib_mr->rkey);
2775 return -ETIME;
2776 } else if (major_code) {
2777 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2778 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2779 major_code, minor_code, ib_mr, ib_mr->rkey);
2780 return -EIO;
2781 }
2782
2783 if (nesmr->pbls_used != 0) {
2784 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2785 if (nesmr->pbl_4k) {
2786 nesadapter->free_4kpbl += nesmr->pbls_used;
2787 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2788 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2789 "exceeded the max(%u)\n",
2790 nesadapter->free_4kpbl,
2791 nesadapter->max_4kpbl);
2792 } else {
2793 nesadapter->free_256pbl += nesmr->pbls_used;
2794 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2795 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2796 "exceeded the max(%u)\n",
2797 nesadapter->free_256pbl,
2798 nesadapter->max_256pbl);
2799 }
2800 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2801 }
2802 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2803 (ib_mr->rkey & 0x0fffff00) >> 8);
2804
2805 kfree(nesmr);
2806
2807 return 0;
2808 }
2809
2810
2811 /**
2812 * show_rev
2813 */
2814 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2815 char *buf)
2816 {
2817 struct nes_ib_device *nesibdev =
2818 container_of(dev, struct nes_ib_device, ibdev.dev);
2819 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2820
2821 nes_debug(NES_DBG_INIT, "\n");
2822 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2823 }
2824
2825
2826 /**
2827 * show_fw_ver
2828 */
2829 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2830 char *buf)
2831 {
2832 struct nes_ib_device *nesibdev =
2833 container_of(dev, struct nes_ib_device, ibdev.dev);
2834 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2835
2836 nes_debug(NES_DBG_INIT, "\n");
2837 return sprintf(buf, "%u.%u\n",
2838 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2839 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2840 }
2841
2842
2843 /**
2844 * show_hca
2845 */
2846 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2847 char *buf)
2848 {
2849 nes_debug(NES_DBG_INIT, "\n");
2850 return sprintf(buf, "NES020\n");
2851 }
2852
2853
2854 /**
2855 * show_board
2856 */
2857 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2858 char *buf)
2859 {
2860 nes_debug(NES_DBG_INIT, "\n");
2861 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2862 }
2863
2864
2865 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2866 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2867 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2868 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2869
2870 static struct device_attribute *nes_dev_attributes[] = {
2871 &dev_attr_hw_rev,
2872 &dev_attr_fw_ver,
2873 &dev_attr_hca_type,
2874 &dev_attr_board_id
2875 };
2876
2877
2878 /**
2879 * nes_query_qp
2880 */
2881 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2882 int attr_mask, struct ib_qp_init_attr *init_attr)
2883 {
2884 struct nes_qp *nesqp = to_nesqp(ibqp);
2885
2886 nes_debug(NES_DBG_QP, "\n");
2887
2888 attr->qp_access_flags = 0;
2889 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2890 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2891 attr->cap.max_recv_sge = 1;
2892 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2893 attr->cap.max_inline_data = 0;
2894 else
2895 attr->cap.max_inline_data = 64;
2896
2897 init_attr->event_handler = nesqp->ibqp.event_handler;
2898 init_attr->qp_context = nesqp->ibqp.qp_context;
2899 init_attr->send_cq = nesqp->ibqp.send_cq;
2900 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2901 init_attr->srq = nesqp->ibqp.srq;
2902 init_attr->cap = attr->cap;
2903
2904 return 0;
2905 }
2906
2907
2908 /**
2909 * nes_hw_modify_qp
2910 */
2911 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2912 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2913 {
2914 struct nes_hw_cqp_wqe *cqp_wqe;
2915 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2916 /* struct iw_cm_event cm_event; */
2917 struct nes_cqp_request *cqp_request;
2918 int ret;
2919 u16 major_code;
2920
2921 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2922 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2923
2924 cqp_request = nes_get_cqp_request(nesdev);
2925 if (cqp_request == NULL) {
2926 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2927 return -ENOMEM;
2928 }
2929 if (wait_completion) {
2930 cqp_request->waiting = 1;
2931 } else {
2932 cqp_request->waiting = 0;
2933 }
2934 cqp_wqe = &cqp_request->cqp_wqe;
2935
2936 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2937 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2938 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2939 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2940 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2941 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2942 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2943
2944 /* If sending a terminate message, fill in the length (in words) */
2945 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2946 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2947 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2948 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2949 }
2950
2951 atomic_set(&cqp_request->refcount, 2);
2952 nes_post_cqp_request(nesdev, cqp_request);
2953
2954 /* Wait for CQP */
2955 if (wait_completion) {
2956 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2957 nesqp->hwqp.qp_id); */
2958 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2959 NES_EVENT_TIMEOUT);
2960 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2961 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2962 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2963 major_code = cqp_request->major_code;
2964 if (major_code) {
2965 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2966 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2967 nesqp->hwqp.qp_id, cqp_request->major_code,
2968 cqp_request->minor_code, next_iwarp_state);
2969 }
2970
2971 nes_put_cqp_request(nesdev, cqp_request);
2972
2973 if (!ret)
2974 return -ETIME;
2975 else if (major_code)
2976 return -EIO;
2977 else
2978 return 0;
2979 } else {
2980 return 0;
2981 }
2982 }
2983
2984
2985 /**
2986 * nes_modify_qp
2987 */
2988 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2989 int attr_mask, struct ib_udata *udata)
2990 {
2991 struct nes_qp *nesqp = to_nesqp(ibqp);
2992 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2993 struct nes_device *nesdev = nesvnic->nesdev;
2994 /* u32 cqp_head; */
2995 /* u32 counter; */
2996 u32 next_iwarp_state = 0;
2997 int err;
2998 unsigned long qplockflags;
2999 int ret;
3000 u16 original_last_aeq;
3001 u8 issue_modify_qp = 0;
3002 u8 dont_wait = 0;
3003
3004 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
3005 " iwarp_state=0x%X, refcount=%d\n",
3006 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
3007 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
3008
3009 spin_lock_irqsave(&nesqp->lock, qplockflags);
3010
3011 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
3012 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
3013 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3014 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3015
3016 if (attr_mask & IB_QP_STATE) {
3017 switch (attr->qp_state) {
3018 case IB_QPS_INIT:
3019 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3020 nesqp->hwqp.qp_id);
3021 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3022 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3023 return -EINVAL;
3024 }
3025 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3026 issue_modify_qp = 1;
3027 break;
3028 case IB_QPS_RTR:
3029 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3030 nesqp->hwqp.qp_id);
3031 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3032 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3033 return -EINVAL;
3034 }
3035 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3036 issue_modify_qp = 1;
3037 break;
3038 case IB_QPS_RTS:
3039 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3040 nesqp->hwqp.qp_id);
3041 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3042 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3043 return -EINVAL;
3044 }
3045 if (nesqp->cm_id == NULL) {
3046 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3047 nesqp->hwqp.qp_id );
3048 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3049 return -EINVAL;
3050 }
3051 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3052 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3053 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3054 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3055 issue_modify_qp = 1;
3056 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3057 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3058 nesqp->hte_added = 1;
3059 break;
3060 case IB_QPS_SQD:
3061 issue_modify_qp = 1;
3062 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3063 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3064 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3065 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3066 return 0;
3067 } else {
3068 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3069 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3070 " ignored due to current iWARP state\n",
3071 nesqp->hwqp.qp_id);
3072 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3073 return -EINVAL;
3074 }
3075 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3076 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3077 " already done based on hw state.\n",
3078 nesqp->hwqp.qp_id);
3079 issue_modify_qp = 0;
3080 }
3081 switch (nesqp->hw_iwarp_state) {
3082 case NES_AEQE_IWARP_STATE_CLOSING:
3083 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3084 break;
3085 case NES_AEQE_IWARP_STATE_TERMINATE:
3086 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3087 break;
3088 case NES_AEQE_IWARP_STATE_ERROR:
3089 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3090 break;
3091 default:
3092 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3093 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3094 break;
3095 }
3096 }
3097 break;
3098 case IB_QPS_SQE:
3099 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3100 nesqp->hwqp.qp_id);
3101 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3102 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3103 return -EINVAL;
3104 }
3105 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3106 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3107 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3108 issue_modify_qp = 1;
3109 break;
3110 case IB_QPS_ERR:
3111 case IB_QPS_RESET:
3112 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3113 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3114 return -EINVAL;
3115 }
3116 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3117 nesqp->hwqp.qp_id);
3118 if (nesqp->term_flags)
3119 del_timer(&nesqp->terminate_timer);
3120
3121 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3122 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3123 if (nesqp->hte_added) {
3124 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3125 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3126 nesqp->hte_added = 0;
3127 }
3128 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3129 (nesdev->iw_status) &&
3130 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3131 next_iwarp_state |= NES_CQP_QP_RESET;
3132 } else {
3133 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3134 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3135 dont_wait = 1;
3136 }
3137 issue_modify_qp = 1;
3138 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3139 break;
3140 default:
3141 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3142 return -EINVAL;
3143 break;
3144 }
3145
3146 nesqp->ibqp_state = attr->qp_state;
3147 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3148 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3149 nesqp->iwarp_state);
3150 }
3151
3152 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3153 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3154 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3155 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3156 issue_modify_qp = 1;
3157 }
3158 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3159 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3160 issue_modify_qp = 1;
3161 }
3162 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3163 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3164 issue_modify_qp = 1;
3165 }
3166 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3167 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3168 issue_modify_qp = 1;
3169 }
3170
3171 if (nesqp->user_mode) {
3172 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3173 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3174 issue_modify_qp = 1;
3175 }
3176 }
3177
3178 original_last_aeq = nesqp->last_aeq;
3179 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3180
3181 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3182
3183 ret = 0;
3184
3185
3186 if (issue_modify_qp) {
3187 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3188 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3189 if (ret)
3190 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3191 " failed for QP%u.\n",
3192 next_iwarp_state, nesqp->hwqp.qp_id);
3193
3194 }
3195
3196 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3197 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3198 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3199 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3200 original_last_aeq, nesqp->last_aeq);
3201 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
3202 if (dont_wait) {
3203 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3204 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3205 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3206 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3207 original_last_aeq, nesqp->last_aeq);
3208 /* this one is for the cm_disconnect thread */
3209 spin_lock_irqsave(&nesqp->lock, qplockflags);
3210 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3211 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3212 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3213 nes_cm_disconn(nesqp);
3214 } else {
3215 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3216 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3217 }
3218 } else {
3219 spin_lock_irqsave(&nesqp->lock, qplockflags);
3220 if (nesqp->cm_id) {
3221 /* These two are for the timer thread */
3222 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3223 nesqp->cm_id->add_ref(nesqp->cm_id);
3224 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3225 " need ae to finish up, original_last_aeq = 0x%04X."
3226 " last_aeq = 0x%04X, scheduling timer.\n",
3227 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3228 original_last_aeq, nesqp->last_aeq);
3229 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3230 }
3231 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3232 } else {
3233 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3234 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3235 " need ae to finish up, original_last_aeq = 0x%04X."
3236 " last_aeq = 0x%04X.\n",
3237 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3238 original_last_aeq, nesqp->last_aeq);
3239 }
3240 }
3241 } else {
3242 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3243 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3244 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3245 original_last_aeq, nesqp->last_aeq);
3246 }
3247 } else {
3248 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3249 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3250 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3251 original_last_aeq, nesqp->last_aeq);
3252 }
3253
3254 err = 0;
3255
3256 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3257 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3258
3259 return err;
3260 }
3261
3262
3263 /**
3264 * nes_muticast_attach
3265 */
3266 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3267 {
3268 nes_debug(NES_DBG_INIT, "\n");
3269 return -ENOSYS;
3270 }
3271
3272
3273 /**
3274 * nes_multicast_detach
3275 */
3276 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3277 {
3278 nes_debug(NES_DBG_INIT, "\n");
3279 return -ENOSYS;
3280 }
3281
3282
3283 /**
3284 * nes_process_mad
3285 */
3286 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3287 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3288 const struct ib_mad_hdr *in, size_t in_mad_size,
3289 struct ib_mad_hdr *out, size_t *out_mad_size,
3290 u16 *out_mad_pkey_index)
3291 {
3292 nes_debug(NES_DBG_INIT, "\n");
3293 return -ENOSYS;
3294 }
3295
3296 static inline void
3297 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3298 {
3299 int sge_index;
3300 int total_payload_length = 0;
3301 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3302 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3303 ib_wr->sg_list[sge_index].addr);
3304 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3305 ib_wr->sg_list[sge_index].length);
3306 if (uselkey)
3307 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3308 (ib_wr->sg_list[sge_index].lkey));
3309 else
3310 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3311
3312 total_payload_length += ib_wr->sg_list[sge_index].length;
3313 }
3314 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3315 total_payload_length);
3316 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3317 total_payload_length);
3318 }
3319
3320 /**
3321 * nes_post_send
3322 */
3323 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3324 struct ib_send_wr **bad_wr)
3325 {
3326 u64 u64temp;
3327 unsigned long flags = 0;
3328 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3329 struct nes_device *nesdev = nesvnic->nesdev;
3330 struct nes_qp *nesqp = to_nesqp(ibqp);
3331 struct nes_hw_qp_wqe *wqe;
3332 int err = 0;
3333 u32 qsize = nesqp->hwqp.sq_size;
3334 u32 head;
3335 u32 wqe_misc = 0;
3336 u32 wqe_count = 0;
3337 u32 counter;
3338
3339 if (nesqp->ibqp_state > IB_QPS_RTS) {
3340 err = -EINVAL;
3341 goto out;
3342 }
3343
3344 spin_lock_irqsave(&nesqp->lock, flags);
3345
3346 head = nesqp->hwqp.sq_head;
3347
3348 while (ib_wr) {
3349 /* Check for QP error */
3350 if (nesqp->term_flags) {
3351 err = -EINVAL;
3352 break;
3353 }
3354
3355 /* Check for SQ overflow */
3356 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3357 err = -ENOMEM;
3358 break;
3359 }
3360
3361 wqe = &nesqp->hwqp.sq_vbase[head];
3362 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3363 nesqp->hwqp.qp_id, wqe, head); */
3364 nes_fill_init_qp_wqe(wqe, nesqp, head);
3365 u64temp = (u64)(ib_wr->wr_id);
3366 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3367 u64temp);
3368 switch (ib_wr->opcode) {
3369 case IB_WR_SEND:
3370 case IB_WR_SEND_WITH_INV:
3371 if (IB_WR_SEND == ib_wr->opcode) {
3372 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3373 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3374 else
3375 wqe_misc = NES_IWARP_SQ_OP_SEND;
3376 } else {
3377 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3378 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3379 else
3380 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3381
3382 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3383 ib_wr->ex.invalidate_rkey);
3384 }
3385
3386 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3387 err = -EINVAL;
3388 break;
3389 }
3390
3391 if (ib_wr->send_flags & IB_SEND_FENCE)
3392 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3393
3394 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3395 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3396 (ib_wr->sg_list[0].length <= 64)) {
3397 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3398 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3399 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3400 ib_wr->sg_list[0].length);
3401 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3402 } else {
3403 fill_wqe_sg_send(wqe, ib_wr, 1);
3404 }
3405
3406 break;
3407 case IB_WR_RDMA_WRITE:
3408 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3409 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3410 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3411 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3412 err = -EINVAL;
3413 break;
3414 }
3415
3416 if (ib_wr->send_flags & IB_SEND_FENCE)
3417 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3418
3419 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3420 rdma_wr(ib_wr)->rkey);
3421 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3422 rdma_wr(ib_wr)->remote_addr);
3423
3424 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3425 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3426 (ib_wr->sg_list[0].length <= 64)) {
3427 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3428 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3429 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3430 ib_wr->sg_list[0].length);
3431 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3432 } else {
3433 fill_wqe_sg_send(wqe, ib_wr, 1);
3434 }
3435
3436 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3437 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3438 break;
3439 case IB_WR_RDMA_READ:
3440 case IB_WR_RDMA_READ_WITH_INV:
3441 /* iWARP only supports 1 sge for RDMA reads */
3442 if (ib_wr->num_sge > 1) {
3443 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3444 ib_wr->num_sge);
3445 err = -EINVAL;
3446 break;
3447 }
3448 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3449 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3450 } else {
3451 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3452 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3453 ib_wr->ex.invalidate_rkey);
3454 }
3455
3456 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3457 rdma_wr(ib_wr)->remote_addr);
3458 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3459 rdma_wr(ib_wr)->rkey);
3460 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3461 ib_wr->sg_list->length);
3462 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3463 ib_wr->sg_list->addr);
3464 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3465 ib_wr->sg_list->lkey);
3466 break;
3467 case IB_WR_LOCAL_INV:
3468 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3469 set_wqe_32bit_value(wqe->wqe_words,
3470 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3471 ib_wr->ex.invalidate_rkey);
3472 break;
3473 case IB_WR_FAST_REG_MR:
3474 {
3475 int i;
3476 struct ib_fast_reg_wr *fwr = fast_reg_wr(ib_wr);
3477 int flags = fwr->access_flags;
3478 struct nes_ib_fast_reg_page_list *pnesfrpl =
3479 container_of(fwr->page_list,
3480 struct nes_ib_fast_reg_page_list,
3481 ibfrpl);
3482 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3483 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3484
3485 if (fwr->page_list_len >
3486 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3487 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3488 err = -EINVAL;
3489 break;
3490 }
3491 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3492 set_wqe_64bit_value(wqe->wqe_words,
3493 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3494 fwr->iova_start);
3495 set_wqe_32bit_value(wqe->wqe_words,
3496 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3497 fwr->length);
3498 set_wqe_32bit_value(wqe->wqe_words,
3499 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3500 set_wqe_32bit_value(wqe->wqe_words,
3501 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3502 fwr->rkey);
3503 /* Set page size: */
3504 if (fwr->page_shift == 12) {
3505 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3506 } else if (fwr->page_shift == 21) {
3507 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3508 } else {
3509 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3510 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3511 err = -EINVAL;
3512 break;
3513 }
3514 /* Set access_flags */
3515 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3516 if (flags & IB_ACCESS_LOCAL_WRITE)
3517 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3518
3519 if (flags & IB_ACCESS_REMOTE_WRITE)
3520 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3521
3522 if (flags & IB_ACCESS_REMOTE_READ)
3523 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3524
3525 if (flags & IB_ACCESS_MW_BIND)
3526 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3527
3528 /* Fill in PBL info: */
3529 if (fwr->page_list_len >
3530 pnesfrpl->ibfrpl.max_page_list_len) {
3531 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3532 " ib_wr=%p, value=%u, max=%u\n",
3533 ib_wr, fwr->page_list_len,
3534 pnesfrpl->ibfrpl.max_page_list_len);
3535 err = -EINVAL;
3536 break;
3537 }
3538
3539 set_wqe_64bit_value(wqe->wqe_words,
3540 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3541 pnesfrpl->nes_wqe_pbl.paddr);
3542
3543 set_wqe_32bit_value(wqe->wqe_words,
3544 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3545 fwr->page_list_len * 8);
3546
3547 for (i = 0; i < fwr->page_list_len; i++)
3548 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3549
3550 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3551 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3552 "page_list_len: %u, wqe_misc: %x\n",
3553 (unsigned long long) fwr->iova_start,
3554 fwr->length,
3555 fwr->rkey,
3556 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
3557 fwr->page_list_len,
3558 wqe_misc);
3559 break;
3560 }
3561 case IB_WR_REG_MR:
3562 {
3563 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3564 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3565 int flags = reg_wr(ib_wr)->access;
3566
3567 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3568 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3569 err = -EINVAL;
3570 break;
3571 }
3572 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3573 set_wqe_64bit_value(wqe->wqe_words,
3574 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3575 mr->ibmr.iova);
3576 set_wqe_32bit_value(wqe->wqe_words,
3577 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3578 mr->ibmr.length);
3579 set_wqe_32bit_value(wqe->wqe_words,
3580 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3581 set_wqe_32bit_value(wqe->wqe_words,
3582 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3583 reg_wr(ib_wr)->key);
3584
3585 if (page_shift == 12) {
3586 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3587 } else if (page_shift == 21) {
3588 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3589 } else {
3590 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3591 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3592 err = -EINVAL;
3593 break;
3594 }
3595
3596 /* Set access_flags */
3597 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3598 if (flags & IB_ACCESS_LOCAL_WRITE)
3599 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3600
3601 if (flags & IB_ACCESS_REMOTE_WRITE)
3602 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3603
3604 if (flags & IB_ACCESS_REMOTE_READ)
3605 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3606
3607 if (flags & IB_ACCESS_MW_BIND)
3608 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3609
3610 /* Fill in PBL info: */
3611 set_wqe_64bit_value(wqe->wqe_words,
3612 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3613 mr->paddr);
3614
3615 set_wqe_32bit_value(wqe->wqe_words,
3616 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3617 mr->npages * 8);
3618
3619 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3620 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3621 "page_list_len: %u, wqe_misc: %x\n",
3622 (unsigned long long) mr->ibmr.iova,
3623 mr->ibmr.length,
3624 reg_wr(ib_wr)->key,
3625 (unsigned long long) mr->paddr,
3626 mr->npages,
3627 wqe_misc);
3628 break;
3629 }
3630 default:
3631 /* error */
3632 err = -EINVAL;
3633 break;
3634 }
3635
3636 if (err)
3637 break;
3638
3639 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3640 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3641
3642 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3643
3644 ib_wr = ib_wr->next;
3645 head++;
3646 wqe_count++;
3647 if (head >= qsize)
3648 head = 0;
3649
3650 }
3651
3652 nesqp->hwqp.sq_head = head;
3653 barrier();
3654 while (wqe_count) {
3655 counter = min(wqe_count, ((u32)255));
3656 wqe_count -= counter;
3657 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3658 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3659 }
3660
3661 spin_unlock_irqrestore(&nesqp->lock, flags);
3662
3663 out:
3664 if (err)
3665 *bad_wr = ib_wr;
3666 return err;
3667 }
3668
3669
3670 /**
3671 * nes_post_recv
3672 */
3673 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3674 struct ib_recv_wr **bad_wr)
3675 {
3676 u64 u64temp;
3677 unsigned long flags = 0;
3678 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3679 struct nes_device *nesdev = nesvnic->nesdev;
3680 struct nes_qp *nesqp = to_nesqp(ibqp);
3681 struct nes_hw_qp_wqe *wqe;
3682 int err = 0;
3683 int sge_index;
3684 u32 qsize = nesqp->hwqp.rq_size;
3685 u32 head;
3686 u32 wqe_count = 0;
3687 u32 counter;
3688 u32 total_payload_length;
3689
3690 if (nesqp->ibqp_state > IB_QPS_RTS) {
3691 err = -EINVAL;
3692 goto out;
3693 }
3694
3695 spin_lock_irqsave(&nesqp->lock, flags);
3696
3697 head = nesqp->hwqp.rq_head;
3698
3699 while (ib_wr) {
3700 /* Check for QP error */
3701 if (nesqp->term_flags) {
3702 err = -EINVAL;
3703 break;
3704 }
3705
3706 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3707 err = -EINVAL;
3708 break;
3709 }
3710 /* Check for RQ overflow */
3711 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3712 err = -ENOMEM;
3713 break;
3714 }
3715
3716 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3717 wqe = &nesqp->hwqp.rq_vbase[head];
3718
3719 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3720 nesqp->hwqp.qp_id, wqe, head); */
3721 nes_fill_init_qp_wqe(wqe, nesqp, head);
3722 u64temp = (u64)(ib_wr->wr_id);
3723 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3724 u64temp);
3725 total_payload_length = 0;
3726 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3727 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3728 ib_wr->sg_list[sge_index].addr);
3729 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3730 ib_wr->sg_list[sge_index].length);
3731 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3732 ib_wr->sg_list[sge_index].lkey);
3733
3734 total_payload_length += ib_wr->sg_list[sge_index].length;
3735 }
3736 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3737 total_payload_length);
3738
3739 ib_wr = ib_wr->next;
3740 head++;
3741 wqe_count++;
3742 if (head >= qsize)
3743 head = 0;
3744 }
3745
3746 nesqp->hwqp.rq_head = head;
3747 barrier();
3748 while (wqe_count) {
3749 counter = min(wqe_count, ((u32)255));
3750 wqe_count -= counter;
3751 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3752 }
3753
3754 spin_unlock_irqrestore(&nesqp->lock, flags);
3755
3756 out:
3757 if (err)
3758 *bad_wr = ib_wr;
3759 return err;
3760 }
3761
3762
3763 /**
3764 * nes_poll_cq
3765 */
3766 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3767 {
3768 u64 u64temp;
3769 u64 wrid;
3770 unsigned long flags = 0;
3771 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3772 struct nes_device *nesdev = nesvnic->nesdev;
3773 struct nes_cq *nescq = to_nescq(ibcq);
3774 struct nes_qp *nesqp;
3775 struct nes_hw_cqe cqe;
3776 u32 head;
3777 u32 wq_tail = 0;
3778 u32 cq_size;
3779 u32 cqe_count = 0;
3780 u32 wqe_index;
3781 u32 u32temp;
3782 u32 move_cq_head = 1;
3783 u32 err_code;
3784
3785 nes_debug(NES_DBG_CQ, "\n");
3786
3787 spin_lock_irqsave(&nescq->lock, flags);
3788
3789 head = nescq->hw_cq.cq_head;
3790 cq_size = nescq->hw_cq.cq_size;
3791
3792 while (cqe_count < num_entries) {
3793 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3794 NES_CQE_VALID) == 0)
3795 break;
3796
3797 /*
3798 * Make sure we read CQ entry contents *after*
3799 * we've checked the valid bit.
3800 */
3801 rmb();
3802
3803 cqe = nescq->hw_cq.cq_vbase[head];
3804 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3805 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3806 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3807 /* parse CQE, get completion context from WQE (either rq or sq) */
3808 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3809 ((u64)u32temp);
3810
3811 if (u64temp) {
3812 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3813 memset(entry, 0, sizeof *entry);
3814 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3815 entry->status = IB_WC_SUCCESS;
3816 } else {
3817 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3818 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3819 entry->status = err_code & 0x0000ffff;
3820
3821 /* The rest of the cqe's will be marked as flushed */
3822 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3823 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3824 NES_IWARP_CQE_MINOR_FLUSH);
3825 } else
3826 entry->status = IB_WC_WR_FLUSH_ERR;
3827 }
3828
3829 entry->qp = &nesqp->ibqp;
3830 entry->src_qp = nesqp->hwqp.qp_id;
3831
3832 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3833 if (nesqp->skip_lsmm) {
3834 nesqp->skip_lsmm = 0;
3835 nesqp->hwqp.sq_tail++;
3836 }
3837
3838 /* Working on a SQ Completion*/
3839 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3840 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3841 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3842 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3843 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3844 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3845
3846 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3847 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3848 case NES_IWARP_SQ_OP_RDMAW:
3849 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3850 entry->opcode = IB_WC_RDMA_WRITE;
3851 break;
3852 case NES_IWARP_SQ_OP_RDMAR:
3853 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3854 entry->opcode = IB_WC_RDMA_READ;
3855 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3856 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3857 break;
3858 case NES_IWARP_SQ_OP_SENDINV:
3859 case NES_IWARP_SQ_OP_SENDSEINV:
3860 case NES_IWARP_SQ_OP_SEND:
3861 case NES_IWARP_SQ_OP_SENDSE:
3862 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3863 entry->opcode = IB_WC_SEND;
3864 break;
3865 case NES_IWARP_SQ_OP_LOCINV:
3866 entry->opcode = IB_WC_LOCAL_INV;
3867 break;
3868 case NES_IWARP_SQ_OP_FAST_REG:
3869 entry->opcode = IB_WC_FAST_REG_MR;
3870 break;
3871 }
3872
3873 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3874 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3875 move_cq_head = 0;
3876 wq_tail = nesqp->hwqp.sq_tail;
3877 }
3878 } else {
3879 /* Working on a RQ Completion*/
3880 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3881 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3882 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3883 entry->opcode = IB_WC_RECV;
3884
3885 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3886 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3887 move_cq_head = 0;
3888 wq_tail = nesqp->hwqp.rq_tail;
3889 }
3890 }
3891
3892 entry->wr_id = wrid;
3893 entry++;
3894 cqe_count++;
3895 }
3896
3897 if (move_cq_head) {
3898 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3899 if (++head >= cq_size)
3900 head = 0;
3901 nescq->polled_completions++;
3902
3903 if ((nescq->polled_completions > (cq_size / 2)) ||
3904 (nescq->polled_completions == 255)) {
3905 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3906 " are pending %u of %u.\n",
3907 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3908 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3909 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3910 nescq->polled_completions = 0;
3911 }
3912 } else {
3913 /* Update the wqe index and set status to flush */
3914 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3915 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3916 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3917 cpu_to_le32(wqe_index);
3918 move_cq_head = 1; /* ready for next pass */
3919 }
3920 }
3921
3922 if (nescq->polled_completions) {
3923 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3924 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3925 nescq->polled_completions = 0;
3926 }
3927
3928 nescq->hw_cq.cq_head = head;
3929 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3930 cqe_count, nescq->hw_cq.cq_number);
3931
3932 spin_unlock_irqrestore(&nescq->lock, flags);
3933
3934 return cqe_count;
3935 }
3936
3937
3938 /**
3939 * nes_req_notify_cq
3940 */
3941 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3942 {
3943 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3944 struct nes_device *nesdev = nesvnic->nesdev;
3945 struct nes_cq *nescq = to_nescq(ibcq);
3946 u32 cq_arm;
3947
3948 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3949 nescq->hw_cq.cq_number);
3950
3951 cq_arm = nescq->hw_cq.cq_number;
3952 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3953 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3954 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3955 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3956 else
3957 return -EINVAL;
3958
3959 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3960 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3961
3962 return 0;
3963 }
3964
3965 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3966 struct ib_port_immutable *immutable)
3967 {
3968 struct ib_port_attr attr;
3969 int err;
3970
3971 err = nes_query_port(ibdev, port_num, &attr);
3972 if (err)
3973 return err;
3974
3975 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3976 immutable->gid_tbl_len = attr.gid_tbl_len;
3977 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3978
3979 return 0;
3980 }
3981
3982 /**
3983 * nes_init_ofa_device
3984 */
3985 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3986 {
3987 struct nes_ib_device *nesibdev;
3988 struct nes_vnic *nesvnic = netdev_priv(netdev);
3989 struct nes_device *nesdev = nesvnic->nesdev;
3990
3991 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3992 if (nesibdev == NULL) {
3993 return NULL;
3994 }
3995 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3996 nesibdev->ibdev.owner = THIS_MODULE;
3997
3998 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3999 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
4000 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
4001
4002 nesibdev->ibdev.uverbs_cmd_mask =
4003 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
4004 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
4005 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
4006 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
4007 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
4008 (1ull << IB_USER_VERBS_CMD_REG_MR) |
4009 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
4010 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
4011 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
4012 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
4013 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
4014 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
4015 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
4016 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
4017 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
4018 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
4019 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
4020 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
4021 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
4022 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
4023 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
4024 (1ull << IB_USER_VERBS_CMD_POST_SEND);
4025
4026 nesibdev->ibdev.phys_port_cnt = 1;
4027 nesibdev->ibdev.num_comp_vectors = 1;
4028 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
4029 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
4030 nesibdev->ibdev.query_device = nes_query_device;
4031 nesibdev->ibdev.query_port = nes_query_port;
4032 nesibdev->ibdev.query_pkey = nes_query_pkey;
4033 nesibdev->ibdev.query_gid = nes_query_gid;
4034 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
4035 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
4036 nesibdev->ibdev.mmap = nes_mmap;
4037 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
4038 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
4039 nesibdev->ibdev.create_ah = nes_create_ah;
4040 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
4041 nesibdev->ibdev.create_qp = nes_create_qp;
4042 nesibdev->ibdev.modify_qp = nes_modify_qp;
4043 nesibdev->ibdev.query_qp = nes_query_qp;
4044 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
4045 nesibdev->ibdev.create_cq = nes_create_cq;
4046 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
4047 nesibdev->ibdev.poll_cq = nes_poll_cq;
4048 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
4049 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
4050 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
4051 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
4052 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
4053 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
4054 nesibdev->ibdev.bind_mw = nes_bind_mw;
4055
4056 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
4057 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
4058 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
4059 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
4060
4061 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
4062 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
4063 nesibdev->ibdev.process_mad = nes_process_mad;
4064
4065 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
4066 nesibdev->ibdev.post_send = nes_post_send;
4067 nesibdev->ibdev.post_recv = nes_post_recv;
4068
4069 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
4070 if (nesibdev->ibdev.iwcm == NULL) {
4071 ib_dealloc_device(&nesibdev->ibdev);
4072 return NULL;
4073 }
4074 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
4075 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
4076 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
4077 nesibdev->ibdev.iwcm->connect = nes_connect;
4078 nesibdev->ibdev.iwcm->accept = nes_accept;
4079 nesibdev->ibdev.iwcm->reject = nes_reject;
4080 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
4081 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
4082 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
4083
4084 return nesibdev;
4085 }
4086
4087
4088 /**
4089 * nes_handle_delayed_event
4090 */
4091 static void nes_handle_delayed_event(unsigned long data)
4092 {
4093 struct nes_vnic *nesvnic = (void *) data;
4094
4095 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
4096 struct ib_event event;
4097
4098 event.device = &nesvnic->nesibdev->ibdev;
4099 if (!event.device)
4100 goto stop_timer;
4101 event.event = nesvnic->delayed_event;
4102 event.element.port_num = nesvnic->logical_port + 1;
4103 ib_dispatch_event(&event);
4104 }
4105
4106 stop_timer:
4107 nesvnic->event_timer.function = NULL;
4108 }
4109
4110
4111 void nes_port_ibevent(struct nes_vnic *nesvnic)
4112 {
4113 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
4114 struct nes_device *nesdev = nesvnic->nesdev;
4115 struct ib_event event;
4116 event.device = &nesibdev->ibdev;
4117 event.element.port_num = nesvnic->logical_port + 1;
4118 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
4119
4120 if (!nesvnic->event_timer.function) {
4121 ib_dispatch_event(&event);
4122 nesvnic->last_dispatched_event = event.event;
4123 nesvnic->event_timer.function = nes_handle_delayed_event;
4124 nesvnic->event_timer.data = (unsigned long) nesvnic;
4125 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
4126 add_timer(&nesvnic->event_timer);
4127 } else {
4128 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
4129 }
4130 nesvnic->delayed_event = event.event;
4131 }
4132
4133
4134 /**
4135 * nes_destroy_ofa_device
4136 */
4137 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
4138 {
4139 if (nesibdev == NULL)
4140 return;
4141
4142 nes_unregister_ofa_device(nesibdev);
4143
4144 kfree(nesibdev->ibdev.iwcm);
4145 ib_dealloc_device(&nesibdev->ibdev);
4146 }
4147
4148
4149 /**
4150 * nes_register_ofa_device
4151 */
4152 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
4153 {
4154 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4155 struct nes_device *nesdev = nesvnic->nesdev;
4156 struct nes_adapter *nesadapter = nesdev->nesadapter;
4157 int i, ret;
4158
4159 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4160 if (ret) {
4161 return ret;
4162 }
4163
4164 /* Get the resources allocated to this device */
4165 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4166 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4167 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4168 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4169
4170 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4171 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4172 if (ret) {
4173 while (i > 0) {
4174 i--;
4175 device_remove_file(&nesibdev->ibdev.dev,
4176 nes_dev_attributes[i]);
4177 }
4178 ib_unregister_device(&nesibdev->ibdev);
4179 return ret;
4180 }
4181 }
4182
4183 nesvnic->of_device_registered = 1;
4184
4185 return 0;
4186 }
4187
4188
4189 /**
4190 * nes_unregister_ofa_device
4191 */
4192 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4193 {
4194 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4195 int i;
4196
4197 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4198 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4199 }
4200
4201 if (nesvnic->of_device_registered) {
4202 ib_unregister_device(&nesibdev->ibdev);
4203 }
4204
4205 nesvnic->of_device_registered = 0;
4206 }
Linux kernel - Deliverables
This page took 0.192035 seconds and 5 git commands to generate.