?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge 3.1-rc1 into usb-linus
[zen-stable.git] / drivers / infiniband / hw / nes / nes_verbs.c
blob9f2f7d4b119754853a6003f8fc8b7dd24473ccad
1 /*
2 * Copyright (c) 2006 - 2009 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
55 /**
56 * nes_alloc_mw
57 */
58 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
64 struct nes_mr *nesmr;
65 struct ib_mw *ibmw;
66 struct nes_hw_cqp_wqe *cqp_wqe;
67 int ret;
68 u32 stag;
69 u32 stag_index = 0;
70 u32 next_stag_index = 0;
71 u32 driver_key = 0;
72 u8 stag_key = 0;
73
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
76
77 driver_key = 0;
78
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
81
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index);
84 if (ret) {
85 return ERR_PTR(ret);
86 }
87
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
89 if (!nesmr) {
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
92 }
93
94 stag = stag_index << 8;
95 stag |= driver_key;
96 stag += (u32)stag_key;
97
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
99 stag, stag_index);
100
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
104 kfree(nesmr);
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
107 }
108
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
111
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
116
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
120
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request);
123
124 /* Wait for CQP */
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
126 NES_EVENT_TIMEOUT);
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 nes_put_cqp_request(nesdev, cqp_request);
132 kfree(nesmr);
133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
134 if (!ret) {
135 return ERR_PTR(-ETIME);
136 } else {
137 return ERR_PTR(-ENOMEM);
138 }
139 }
140 nes_put_cqp_request(nesdev, cqp_request);
141
142 nesmr->ibmw.rkey = stag;
143 nesmr->mode = IWNES_MEMREG_TYPE_MW;
144 ibmw = &nesmr->ibmw;
145 nesmr->pbl_4k = 0;
146 nesmr->pbls_used = 0;
147
148 return ibmw;
149 }
150
151
152 /**
153 * nes_dealloc_mw
154 */
155 static int nes_dealloc_mw(struct ib_mw *ibmw)
156 {
157 struct nes_mr *nesmr = to_nesmw(ibmw);
158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
159 struct nes_device *nesdev = nesvnic->nesdev;
160 struct nes_adapter *nesadapter = nesdev->nesadapter;
161 struct nes_hw_cqp_wqe *cqp_wqe;
162 struct nes_cqp_request *cqp_request;
163 int err = 0;
164 int ret;
165
166 /* Deallocate the window with the adapter */
167 cqp_request = nes_get_cqp_request(nesdev);
168 if (cqp_request == NULL) {
169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
170 return -ENOMEM;
171 }
172 cqp_request->waiting = 1;
173 cqp_wqe = &cqp_request->cqp_wqe;
174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
177
178 atomic_set(&cqp_request->refcount, 2);
179 nes_post_cqp_request(nesdev, cqp_request);
180
181 /* Wait for CQP */
182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
183 ibmw->rkey);
184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
185 NES_EVENT_TIMEOUT);
186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
188 ret, cqp_request->major_code, cqp_request->minor_code);
189 if (!ret)
190 err = -ETIME;
191 else if (cqp_request->major_code)
192 err = -EIO;
193
194 nes_put_cqp_request(nesdev, cqp_request);
195
196 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
197 (ibmw->rkey & 0x0fffff00) >> 8);
198 kfree(nesmr);
199
200 return err;
201 }
202
203
204 /**
205 * nes_bind_mw
206 */
207 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
208 struct ib_mw_bind *ibmw_bind)
209 {
210 u64 u64temp;
211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
212 struct nes_device *nesdev = nesvnic->nesdev;
213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
214 struct nes_qp *nesqp = to_nesqp(ibqp);
215 struct nes_hw_qp_wqe *wqe;
216 unsigned long flags = 0;
217 u32 head;
218 u32 wqe_misc = 0;
219 u32 qsize;
220
221 if (nesqp->ibqp_state > IB_QPS_RTS)
222 return -EINVAL;
223
224 spin_lock_irqsave(&nesqp->lock, flags);
225
226 head = nesqp->hwqp.sq_head;
227 qsize = nesqp->hwqp.sq_tail;
228
229 /* Check for SQ overflow */
230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
231 spin_unlock_irqrestore(&nesqp->lock, flags);
232 return -ENOMEM;
233 }
234
235 wqe = &nesqp->hwqp.sq_vbase[head];
236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
237 nes_fill_init_qp_wqe(wqe, nesqp, head);
238 u64temp = ibmw_bind->wr_id;
239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
240 wqe_misc = NES_IWARP_SQ_OP_BIND;
241
242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
243
244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
246
247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
249 }
250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
252 }
253
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
258 ibmw_bind->length);
259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
260 u64temp = (u64)ibmw_bind->addr;
261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
262
263 head++;
264 if (head >= qsize)
265 head = 0;
266
267 nesqp->hwqp.sq_head = head;
268 barrier();
269
270 nes_write32(nesdev->regs+NES_WQE_ALLOC,
271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
272
273 spin_unlock_irqrestore(&nesqp->lock, flags);
274
275 return 0;
276 }
277
278
279 /*
280 * nes_alloc_fast_mr
281 */
282 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
283 u32 stag, u32 page_count)
284 {
285 struct nes_hw_cqp_wqe *cqp_wqe;
286 struct nes_cqp_request *cqp_request;
287 unsigned long flags;
288 int ret;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 u32 opcode = 0;
291 u16 major_code;
292 u64 region_length = page_count * PAGE_SIZE;
293
294
295 cqp_request = nes_get_cqp_request(nesdev);
296 if (cqp_request == NULL) {
297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
298 return -ENOMEM;
299 }
300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
301 "region_length = %llu\n",
302 page_count, region_length);
303 cqp_request->waiting = 1;
304 cqp_wqe = &cqp_request->cqp_wqe;
305
306 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
307 if (nesadapter->free_4kpbl > 0) {
308 nesadapter->free_4kpbl--;
309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
310 } else {
311 /* No 4kpbl's available: */
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 nes_debug(NES_DBG_MR, "Out of Pbls\n");
314 nes_free_cqp_request(nesdev, cqp_request);
315 return -ENOMEM;
316 }
317
318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
320 NES_CQP_STAG_REM_ACC_EN;
321 /*
322 * The current OFED API does not support the zero based TO option.
323 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
324 * the API does not support that ability to have the MR set for local
325 * access only when created and not allow the SQ op to override. Given
326 * this the remote enable must be set here.
327 */
328
329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
332
333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
336 cpu_to_le32(nespd->pd_id & 0x00007fff);
337
338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
344 barrier();
345
346 atomic_set(&cqp_request->refcount, 2);
347 nes_post_cqp_request(nesdev, cqp_request);
348
349 /* Wait for CQP */
350 ret = wait_event_timeout(cqp_request->waitq,
351 (0 != cqp_request->request_done),
352 NES_EVENT_TIMEOUT);
353
354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
355 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
357 cqp_request->minor_code);
358 major_code = cqp_request->major_code;
359 nes_put_cqp_request(nesdev, cqp_request);
360
361 if (!ret || major_code) {
362 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
363 nesadapter->free_4kpbl++;
364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
365 }
366
367 if (!ret)
368 return -ETIME;
369 else if (major_code)
370 return -EIO;
371 return 0;
372 }
373
374 /*
375 * nes_alloc_fast_reg_mr
376 */
377 static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
378 {
379 struct nes_pd *nespd = to_nespd(ibpd);
380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
381 struct nes_device *nesdev = nesvnic->nesdev;
382 struct nes_adapter *nesadapter = nesdev->nesadapter;
383
384 u32 next_stag_index;
385 u8 stag_key = 0;
386 u32 driver_key = 0;
387 int err = 0;
388 u32 stag_index = 0;
389 struct nes_mr *nesmr;
390 u32 stag;
391 int ret;
392 struct ib_mr *ibmr;
393 /*
394 * Note: Set to always use a fixed length single page entry PBL. This is to allow
395 * for the fast_reg_mr operation to always know the size of the PBL.
396 */
397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
398 return ERR_PTR(-E2BIG);
399
400 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
401 stag_key = (u8)next_stag_index;
402 next_stag_index >>= 8;
403 next_stag_index %= nesadapter->max_mr;
404
405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
406 nesadapter->max_mr, &stag_index,
407 &next_stag_index);
408 if (err)
409 return ERR_PTR(err);
410
411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
412 if (!nesmr) {
413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
414 return ERR_PTR(-ENOMEM);
415 }
416
417 stag = stag_index << 8;
418 stag |= driver_key;
419 stag += (u32)stag_key;
420
421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
422 stag, stag_index);
423
424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
425
426 if (ret == 0) {
427 nesmr->ibmr.rkey = stag;
428 nesmr->ibmr.lkey = stag;
429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
430 ibmr = &nesmr->ibmr;
431 } else {
432 kfree(nesmr);
433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
434 ibmr = ERR_PTR(-ENOMEM);
435 }
436 return ibmr;
437 }
438
439 /*
440 * nes_alloc_fast_reg_page_list
441 */
442 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
443 struct ib_device *ibdev,
444 int page_list_len)
445 {
446 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
447 struct nes_device *nesdev = nesvnic->nesdev;
448 struct ib_fast_reg_page_list *pifrpl;
449 struct nes_ib_fast_reg_page_list *pnesfrpl;
450
451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
452 return ERR_PTR(-E2BIG);
453 /*
454 * Allocate the ib_fast_reg_page_list structure, the
455 * nes_fast_bpl structure, and the PLB table.
456 */
457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
458 page_list_len * sizeof(u64), GFP_KERNEL);
459
460 if (!pnesfrpl)
461 return ERR_PTR(-ENOMEM);
462
463 pifrpl = &pnesfrpl->ibfrpl;
464 pifrpl->page_list = &pnesfrpl->pbl;
465 pifrpl->max_page_list_len = page_list_len;
466 /*
467 * Allocate the WQE PBL
468 */
469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
470 page_list_len * sizeof(u64),
471 &pnesfrpl->nes_wqe_pbl.paddr);
472
473 if (!pnesfrpl->nes_wqe_pbl.kva) {
474 kfree(pnesfrpl);
475 return ERR_PTR(-ENOMEM);
476 }
477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
479 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
481 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
482
483 return pifrpl;
484 }
485
486 /*
487 * nes_free_fast_reg_page_list
488 */
489 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
490 {
491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
492 struct nes_device *nesdev = nesvnic->nesdev;
493 struct nes_ib_fast_reg_page_list *pnesfrpl;
494
495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
496 /*
497 * Free the WQE PBL.
498 */
499 pci_free_consistent(nesdev->pcidev,
500 pifrpl->max_page_list_len * sizeof(u64),
501 pnesfrpl->nes_wqe_pbl.kva,
502 pnesfrpl->nes_wqe_pbl.paddr);
503 /*
504 * Free the PBL structure
505 */
506 kfree(pnesfrpl);
507 }
508
509 /**
510 * nes_query_device
511 */
512 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
513 {
514 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
515 struct nes_device *nesdev = nesvnic->nesdev;
516 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
517
518 memset(props, 0, sizeof(*props));
519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
520
521 props->fw_ver = nesdev->nesadapter->firmware_version;
522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
523 props->vendor_id = nesdev->nesadapter->vendor_id;
524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
525 props->hw_ver = nesdev->nesadapter->hw_rev;
526 props->max_mr_size = 0x80000000;
527 props->max_qp = nesibdev->max_qp;
528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
529 props->max_sge = nesdev->nesadapter->max_sge;
530 props->max_cq = nesibdev->max_cq;
531 props->max_cqe = nesdev->nesadapter->max_cqe;
532 props->max_mr = nesibdev->max_mr;
533 props->max_mw = nesibdev->max_mr;
534 props->max_pd = nesibdev->max_pd;
535 props->max_sge_rd = 1;
536 switch (nesdev->nesadapter->max_irrq_wr) {
537 case 0:
538 props->max_qp_rd_atom = 2;
539 break;
540 case 1:
541 props->max_qp_rd_atom = 8;
542 break;
543 case 2:
544 props->max_qp_rd_atom = 32;
545 break;
546 case 3:
547 props->max_qp_rd_atom = 64;
548 break;
549 default:
550 props->max_qp_rd_atom = 0;
551 }
552 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
553 props->atomic_cap = IB_ATOMIC_NONE;
554 props->max_map_per_fmr = 1;
555
556 return 0;
557 }
558
559
560 /**
561 * nes_query_port
562 */
563 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
564 {
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct net_device *netdev = nesvnic->netdev;
567
568 memset(props, 0, sizeof(*props));
569
570 props->max_mtu = IB_MTU_4096;
571
572 if (netdev->mtu >= 4096)
573 props->active_mtu = IB_MTU_4096;
574 else if (netdev->mtu >= 2048)
575 props->active_mtu = IB_MTU_2048;
576 else if (netdev->mtu >= 1024)
577 props->active_mtu = IB_MTU_1024;
578 else if (netdev->mtu >= 512)
579 props->active_mtu = IB_MTU_512;
580 else
581 props->active_mtu = IB_MTU_256;
582
583 props->lid = 1;
584 props->lmc = 0;
585 props->sm_lid = 0;
586 props->sm_sl = 0;
587 if (netif_queue_stopped(netdev))
588 props->state = IB_PORT_DOWN;
589 else if (nesvnic->linkup)
590 props->state = IB_PORT_ACTIVE;
591 else
592 props->state = IB_PORT_DOWN;
593 props->phys_state = 0;
594 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
595 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
596 props->gid_tbl_len = 1;
597 props->pkey_tbl_len = 1;
598 props->qkey_viol_cntr = 0;
599 props->active_width = IB_WIDTH_4X;
600 props->active_speed = 1;
601 props->max_msg_sz = 0x80000000;
602
603 return 0;
604 }
605
606
607 /**
608 * nes_query_pkey
609 */
610 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
611 {
612 *pkey = 0;
613 return 0;
614 }
615
616
617 /**
618 * nes_query_gid
619 */
620 static int nes_query_gid(struct ib_device *ibdev, u8 port,
621 int index, union ib_gid *gid)
622 {
623 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
624
625 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
626 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
627
628 return 0;
629 }
630
631
632 /**
633 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
634 * of all objects associated with a particular user-mode client.
635 */
636 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
637 struct ib_udata *udata)
638 {
639 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
640 struct nes_device *nesdev = nesvnic->nesdev;
641 struct nes_adapter *nesadapter = nesdev->nesadapter;
642 struct nes_alloc_ucontext_req req;
643 struct nes_alloc_ucontext_resp uresp;
644 struct nes_ucontext *nes_ucontext;
645 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
646
647
648 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
649 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
650 return ERR_PTR(-EINVAL);
651 }
652
653 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
654 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
655 req.userspace_ver, NES_ABI_USERSPACE_VER);
656 return ERR_PTR(-EINVAL);
657 }
658
659
660 memset(&uresp, 0, sizeof uresp);
661
662 uresp.max_qps = nesibdev->max_qp;
663 uresp.max_pds = nesibdev->max_pd;
664 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
665 uresp.virtwq = nesadapter->virtwq;
666 uresp.kernel_ver = NES_ABI_KERNEL_VER;
667
668 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
669 if (!nes_ucontext)
670 return ERR_PTR(-ENOMEM);
671
672 nes_ucontext->nesdev = nesdev;
673 nes_ucontext->mmap_wq_offset = uresp.max_pds;
674 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
675 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
676 PAGE_SIZE;
677
678
679 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
680 kfree(nes_ucontext);
681 return ERR_PTR(-EFAULT);
682 }
683
684 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
685 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
686 atomic_set(&nes_ucontext->usecnt, 1);
687 return &nes_ucontext->ibucontext;
688 }
689
690
691 /**
692 * nes_dealloc_ucontext
693 */
694 static int nes_dealloc_ucontext(struct ib_ucontext *context)
695 {
696 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
697 /* struct nes_device *nesdev = nesvnic->nesdev; */
698 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
699
700 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
701 return 0;
702 kfree(nes_ucontext);
703 return 0;
704 }
705
706
707 /**
708 * nes_mmap
709 */
710 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
711 {
712 unsigned long index;
713 struct nes_vnic *nesvnic = to_nesvnic(context->device);
714 struct nes_device *nesdev = nesvnic->nesdev;
715 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
716 struct nes_ucontext *nes_ucontext;
717 struct nes_qp *nesqp;
718
719 nes_ucontext = to_nesucontext(context);
720
721
722 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
723 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
724 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
725 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
726 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
727 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
728 return -EFAULT;
729 }
730 nesqp = nes_ucontext->mmap_nesqp[index];
731 if (nesqp == NULL) {
732 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
733 return -EFAULT;
734 }
735 if (remap_pfn_range(vma, vma->vm_start,
736 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
737 vma->vm_end - vma->vm_start,
738 vma->vm_page_prot)) {
739 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
740 return -EAGAIN;
741 }
742 vma->vm_private_data = nesqp;
743 return 0;
744 } else {
745 index = vma->vm_pgoff;
746 if (!test_bit(index, nes_ucontext->allocated_doorbells))
747 return -EFAULT;
748
749 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
750 if (io_remap_pfn_range(vma, vma->vm_start,
751 (nesdev->doorbell_start +
752 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
753 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
754 return -EAGAIN;
755 vma->vm_private_data = nes_ucontext;
756 return 0;
757 }
758
759 return -ENOSYS;
760 }
761
762
763 /**
764 * nes_alloc_pd
765 */
766 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
767 struct ib_ucontext *context, struct ib_udata *udata)
768 {
769 struct nes_pd *nespd;
770 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
771 struct nes_device *nesdev = nesvnic->nesdev;
772 struct nes_adapter *nesadapter = nesdev->nesadapter;
773 struct nes_ucontext *nesucontext;
774 struct nes_alloc_pd_resp uresp;
775 u32 pd_num = 0;
776 int err;
777
778 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
779 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
780 netdev_refcnt_read(nesvnic->netdev));
781
782 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
783 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
784 if (err) {
785 return ERR_PTR(err);
786 }
787
788 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
789 if (!nespd) {
790 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
791 return ERR_PTR(-ENOMEM);
792 }
793
794 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
795 nespd, nesvnic->nesibdev->ibdev.name);
796
797 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
798
799 if (context) {
800 nesucontext = to_nesucontext(context);
801 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
802 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
803 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
804 nespd->mmap_db_index, nespd->pd_id);
805 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
806 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
807 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
808 kfree(nespd);
809 return ERR_PTR(-ENOMEM);
810 }
811
812 uresp.pd_id = nespd->pd_id;
813 uresp.mmap_db_index = nespd->mmap_db_index;
814 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
816 kfree(nespd);
817 return ERR_PTR(-EFAULT);
818 }
819
820 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
821 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
822 nesucontext->first_free_db = nespd->mmap_db_index + 1;
823 }
824
825 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
826 return &nespd->ibpd;
827 }
828
829
830 /**
831 * nes_dealloc_pd
832 */
833 static int nes_dealloc_pd(struct ib_pd *ibpd)
834 {
835 struct nes_ucontext *nesucontext;
836 struct nes_pd *nespd = to_nespd(ibpd);
837 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
838 struct nes_device *nesdev = nesvnic->nesdev;
839 struct nes_adapter *nesadapter = nesdev->nesadapter;
840
841 if ((ibpd->uobject) && (ibpd->uobject->context)) {
842 nesucontext = to_nesucontext(ibpd->uobject->context);
843 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
844 nespd->mmap_db_index);
845 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
846 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
847 if (nesucontext->first_free_db > nespd->mmap_db_index) {
848 nesucontext->first_free_db = nespd->mmap_db_index;
849 }
850 }
851
852 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
853 nespd->pd_id, nespd);
854 nes_free_resource(nesadapter, nesadapter->allocated_pds,
855 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
856 kfree(nespd);
857
858 return 0;
859 }
860
861
862 /**
863 * nes_create_ah
864 */
865 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
866 {
867 return ERR_PTR(-ENOSYS);
868 }
869
870
871 /**
872 * nes_destroy_ah
873 */
874 static int nes_destroy_ah(struct ib_ah *ah)
875 {
876 return -ENOSYS;
877 }
878
879
880 /**
881 * nes_get_encoded_size
882 */
883 static inline u8 nes_get_encoded_size(int *size)
884 {
885 u8 encoded_size = 0;
886 if (*size <= 32) {
887 *size = 32;
888 encoded_size = 1;
889 } else if (*size <= 128) {
890 *size = 128;
891 encoded_size = 2;
892 } else if (*size <= 512) {
893 *size = 512;
894 encoded_size = 3;
895 }
896 return (encoded_size);
897 }
898
899
900
901 /**
902 * nes_setup_virt_qp
903 */
904 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
905 struct nes_vnic *nesvnic, int sq_size, int rq_size)
906 {
907 unsigned long flags;
908 void *mem;
909 __le64 *pbl = NULL;
910 __le64 *tpbl;
911 __le64 *pblbuffer;
912 struct nes_device *nesdev = nesvnic->nesdev;
913 struct nes_adapter *nesadapter = nesdev->nesadapter;
914 u32 pbl_entries;
915 u8 rq_pbl_entries;
916 u8 sq_pbl_entries;
917
918 pbl_entries = nespbl->pbl_size >> 3;
919 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
920 nespbl->pbl_size, pbl_entries,
921 (void *)nespbl->pbl_vbase,
922 (unsigned long) nespbl->pbl_pbase);
923 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
924 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
925 /* the first pbl to be fro the rq_vbase... */
926 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
927 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
928 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
929 if (!nespbl->page) {
930 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
931 kfree(nespbl);
932 return -ENOMEM;
933 }
934
935 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
936 nesqp->page = nespbl->page;
937 if (!nesqp->hwqp.sq_vbase) {
938 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
939 kfree(nespbl);
940 return -ENOMEM;
941 }
942
943 /* Now to get to sq.. we need to calculate how many */
944 /* PBL entries were used by the rq.. */
945 pbl += sq_pbl_entries;
946 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
947 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
948 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
949
950 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
951 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
952 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
953 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
954 if (!nesadapter->free_256pbl) {
955 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
956 nespbl->pbl_pbase);
957 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
958 kunmap(nesqp->page);
959 kfree(nespbl);
960 return -ENOMEM;
961 }
962 nesadapter->free_256pbl--;
963 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
964
965 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
966 pblbuffer = nesqp->pbl_vbase;
967 if (!nesqp->pbl_vbase) {
968 /* memory allocated during nes_reg_user_mr() */
969 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
970 nespbl->pbl_pbase);
971 kfree(nespbl);
972 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
973 nesadapter->free_256pbl++;
974 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
975 kunmap(nesqp->page);
976 return -ENOMEM;
977 }
978 memset(nesqp->pbl_vbase, 0, 256);
979 /* fill in the page address in the pbl buffer.. */
980 tpbl = pblbuffer + 16;
981 pbl = (__le64 *)nespbl->pbl_vbase;
982 while (sq_pbl_entries--)
983 *tpbl++ = *pbl++;
984 tpbl = pblbuffer;
985 while (rq_pbl_entries--)
986 *tpbl++ = *pbl++;
987
988 /* done with memory allocated during nes_reg_user_mr() */
989 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
990 nespbl->pbl_pbase);
991 kfree(nespbl);
992
993 nesqp->qp_mem_size =
994 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
995 /* Round up to a multiple of a page */
996 nesqp->qp_mem_size += PAGE_SIZE - 1;
997 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
998
999 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1000 &nesqp->hwqp.q2_pbase);
1001
1002 if (!mem) {
1003 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1004 nesqp->pbl_vbase = NULL;
1005 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1006 nesadapter->free_256pbl++;
1007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1008 kunmap(nesqp->page);
1009 return -ENOMEM;
1010 }
1011 nesqp->sq_kmapped = 1;
1012 nesqp->hwqp.q2_vbase = mem;
1013 mem += 256;
1014 memset(nesqp->hwqp.q2_vbase, 0, 256);
1015 nesqp->nesqp_context = mem;
1016 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1017 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1018
1019 return 0;
1020 }
1021
1022
1023 /**
1024 * nes_setup_mmap_qp
1025 */
1026 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1027 int sq_size, int rq_size)
1028 {
1029 void *mem;
1030 struct nes_device *nesdev = nesvnic->nesdev;
1031
1032 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1033 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1034 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1035 256; /* this is Q2 */
1036 /* Round up to a multiple of a page */
1037 nesqp->qp_mem_size += PAGE_SIZE - 1;
1038 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1039
1040 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1041 &nesqp->hwqp.sq_pbase);
1042 if (!mem)
1043 return -ENOMEM;
1044 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1045 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1046 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1047
1048 memset(mem, 0, nesqp->qp_mem_size);
1049
1050 nesqp->hwqp.sq_vbase = mem;
1051 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1052
1053 nesqp->hwqp.rq_vbase = mem;
1054 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1055 sizeof(struct nes_hw_qp_wqe) * sq_size;
1056 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1057
1058 nesqp->hwqp.q2_vbase = mem;
1059 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1060 sizeof(struct nes_hw_qp_wqe) * rq_size;
1061 mem += 256;
1062 memset(nesqp->hwqp.q2_vbase, 0, 256);
1063
1064 nesqp->nesqp_context = mem;
1065 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1066 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1067 return 0;
1068 }
1069
1070
1071 /**
1072 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1073 */
1074 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1075 struct nes_qp *nesqp, int virt_wqs)
1076 {
1077 unsigned long flags;
1078 struct nes_adapter *nesadapter = nesdev->nesadapter;
1079 if (!virt_wqs) {
1080 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1081 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1082 }else {
1083 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1084 nesadapter->free_256pbl++;
1085 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1087 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1088 nesqp->pbl_vbase = NULL;
1089 if (nesqp->sq_kmapped) {
1090 nesqp->sq_kmapped = 0;
1091 kunmap(nesqp->page);
1092 }
1093 }
1094 }
1095
1096
1097 /**
1098 * nes_create_qp
1099 */
1100 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1101 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1102 {
1103 u64 u64temp= 0;
1104 u64 u64nesqp = 0;
1105 struct nes_pd *nespd = to_nespd(ibpd);
1106 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1107 struct nes_device *nesdev = nesvnic->nesdev;
1108 struct nes_adapter *nesadapter = nesdev->nesadapter;
1109 struct nes_qp *nesqp;
1110 struct nes_cq *nescq;
1111 struct nes_ucontext *nes_ucontext;
1112 struct nes_hw_cqp_wqe *cqp_wqe;
1113 struct nes_cqp_request *cqp_request;
1114 struct nes_create_qp_req req;
1115 struct nes_create_qp_resp uresp;
1116 struct nes_pbl *nespbl = NULL;
1117 u32 qp_num = 0;
1118 u32 opcode = 0;
1119 /* u32 counter = 0; */
1120 void *mem;
1121 unsigned long flags;
1122 int ret;
1123 int err;
1124 int virt_wqs = 0;
1125 int sq_size;
1126 int rq_size;
1127 u8 sq_encoded_size;
1128 u8 rq_encoded_size;
1129 /* int counter; */
1130
1131 if (init_attr->create_flags)
1132 return ERR_PTR(-EINVAL);
1133
1134 atomic_inc(&qps_created);
1135 switch (init_attr->qp_type) {
1136 case IB_QPT_RC:
1137 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1138 init_attr->cap.max_inline_data = 0;
1139 } else {
1140 init_attr->cap.max_inline_data = 64;
1141 }
1142 sq_size = init_attr->cap.max_send_wr;
1143 rq_size = init_attr->cap.max_recv_wr;
1144
1145 /* check if the encoded sizes are OK or not... */
1146 sq_encoded_size = nes_get_encoded_size(&sq_size);
1147 rq_encoded_size = nes_get_encoded_size(&rq_size);
1148
1149 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1150 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1151 rq_size, sq_size);
1152 return ERR_PTR(-EINVAL);
1153 }
1154
1155 init_attr->cap.max_send_wr = sq_size -2;
1156 init_attr->cap.max_recv_wr = rq_size -1;
1157 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1158
1159 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1160 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1161 if (ret) {
1162 return ERR_PTR(ret);
1163 }
1164
1165 /* Need 512 (actually now 1024) byte alignment on this structure */
1166 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1167 if (!mem) {
1168 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1169 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1170 return ERR_PTR(-ENOMEM);
1171 }
1172 u64nesqp = (unsigned long)mem;
1173 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1174 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1175 u64nesqp &= ~u64temp;
1176 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1177 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1178 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1179 nesqp->allocated_buffer = mem;
1180
1181 if (udata) {
1182 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1183 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1184 kfree(nesqp->allocated_buffer);
1185 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1186 return NULL;
1187 }
1188 if (req.user_wqe_buffers) {
1189 virt_wqs = 1;
1190 }
1191 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1192 nesqp->user_mode = 1;
1193 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1194 if (virt_wqs) {
1195 err = 1;
1196 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1197 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1198 list_del(&nespbl->list);
1199 err = 0;
1200 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1201 nespbl, nespbl->user_base);
1202 break;
1203 }
1204 }
1205 if (err) {
1206 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1207 (long long unsigned int)req.user_wqe_buffers);
1208 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1209 kfree(nesqp->allocated_buffer);
1210 return ERR_PTR(-EFAULT);
1211 }
1212 }
1213
1214 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1215 nesqp->mmap_sq_db_index =
1216 find_next_zero_bit(nes_ucontext->allocated_wqs,
1217 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1218 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1219 nespd->mmap_db_index); */
1220 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1221 nes_debug(NES_DBG_QP,
1222 "db index > max user regions, failing create QP\n");
1223 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1224 if (virt_wqs) {
1225 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1226 nespbl->pbl_pbase);
1227 kfree(nespbl);
1228 }
1229 kfree(nesqp->allocated_buffer);
1230 return ERR_PTR(-ENOMEM);
1231 }
1232 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1233 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1234 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1235 } else {
1236 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-EFAULT);
1239 }
1240 }
1241 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1242 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1243 if (err) {
1244 nes_debug(NES_DBG_QP,
1245 "error geting qp mem code = %d\n", err);
1246 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1247 kfree(nesqp->allocated_buffer);
1248 return ERR_PTR(-ENOMEM);
1249 }
1250
1251 nesqp->hwqp.sq_size = sq_size;
1252 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1253 nesqp->hwqp.sq_head = 1;
1254 nesqp->hwqp.rq_size = rq_size;
1255 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1256 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1257 (void *)nesqp->nesqp_context_pbase);
1258 */
1259 nesqp->hwqp.qp_id = qp_num;
1260 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1261 nesqp->nespd = nespd;
1262
1263 nescq = to_nescq(init_attr->send_cq);
1264 nesqp->nesscq = nescq;
1265 nescq = to_nescq(init_attr->recv_cq);
1266 nesqp->nesrcq = nescq;
1267
1268 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1269 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1270 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1271 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1272 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1273 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1274 if (!udata) {
1275 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1276 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1277 }
1278 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1279 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1280 u64temp = (u64)nesqp->hwqp.sq_pbase;
1281 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1282 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1283
1284
1285 if (!virt_wqs) {
1286 u64temp = (u64)nesqp->hwqp.sq_pbase;
1287 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1288 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1289 u64temp = (u64)nesqp->hwqp.rq_pbase;
1290 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1291 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1292 } else {
1293 u64temp = (u64)nesqp->pbl_pbase;
1294 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1295 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1296 }
1297
1298 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1299 nesvnic->next_qp_nic_index,
1300 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1301 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1302 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1303 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1304 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1305 nesvnic->next_qp_nic_index++;
1306 if ((nesvnic->next_qp_nic_index > 3) ||
1307 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1308 nesvnic->next_qp_nic_index = 0;
1309 }
1310 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1311
1312 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1313 u64temp = (u64)nesqp->hwqp.q2_pbase;
1314 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1315 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1316 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1317 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1318 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1319 NES_QPCONTEXT_ORDIRD_AAH |
1320 ((((u32)nesadapter->max_irrq_wr) <<
1321 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1322 if (disable_mpa_crc) {
1323 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1324 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1325 }
1326
1327
1328 /* Create the QP */
1329 cqp_request = nes_get_cqp_request(nesdev);
1330 if (cqp_request == NULL) {
1331 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1332 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1333 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1334 kfree(nesqp->allocated_buffer);
1335 return ERR_PTR(-ENOMEM);
1336 }
1337 cqp_request->waiting = 1;
1338 cqp_wqe = &cqp_request->cqp_wqe;
1339
1340 if (!virt_wqs) {
1341 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1342 NES_CQP_QP_IWARP_STATE_IDLE;
1343 } else {
1344 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1345 NES_CQP_QP_IWARP_STATE_IDLE;
1346 }
1347 opcode |= NES_CQP_QP_CQS_VALID;
1348 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1349 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1350 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1351
1352 u64temp = (u64)nesqp->nesqp_context_pbase;
1353 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1354
1355 atomic_set(&cqp_request->refcount, 2);
1356 nes_post_cqp_request(nesdev, cqp_request);
1357
1358 /* Wait for CQP */
1359 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1360 nesqp->hwqp.qp_id);
1361 ret = wait_event_timeout(cqp_request->waitq,
1362 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1363 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1364 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1365 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1366 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1367 cqp_request->major_code, cqp_request->minor_code);
1368 if ((!ret) || (cqp_request->major_code)) {
1369 nes_put_cqp_request(nesdev, cqp_request);
1370 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1371 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1372 kfree(nesqp->allocated_buffer);
1373 if (!ret) {
1374 return ERR_PTR(-ETIME);
1375 } else {
1376 return ERR_PTR(-EIO);
1377 }
1378 }
1379
1380 nes_put_cqp_request(nesdev, cqp_request);
1381
1382 if (ibpd->uobject) {
1383 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1384 uresp.actual_sq_size = sq_size;
1385 uresp.actual_rq_size = rq_size;
1386 uresp.qp_id = nesqp->hwqp.qp_id;
1387 uresp.nes_drv_opt = nes_drv_opt;
1388 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1389 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1390 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1391 kfree(nesqp->allocated_buffer);
1392 return ERR_PTR(-EFAULT);
1393 }
1394 }
1395
1396 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1397 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1398 spin_lock_init(&nesqp->lock);
1399 nes_add_ref(&nesqp->ibqp);
1400 break;
1401 default:
1402 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1403 return ERR_PTR(-EINVAL);
1404 }
1405
1406 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1407
1408 /* update the QP table */
1409 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1410 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1411 netdev_refcnt_read(nesvnic->netdev));
1412
1413 return &nesqp->ibqp;
1414 }
1415
1416
1417 /**
1418 * nes_clean_cq
1419 */
1420 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1421 {
1422 u32 cq_head;
1423 u32 lo;
1424 u32 hi;
1425 u64 u64temp;
1426 unsigned long flags = 0;
1427
1428 spin_lock_irqsave(&nescq->lock, flags);
1429
1430 cq_head = nescq->hw_cq.cq_head;
1431 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1432 rmb();
1433 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1434 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1435 u64temp = (((u64)hi) << 32) | ((u64)lo);
1436 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1437 if (u64temp == (u64)(unsigned long)nesqp) {
1438 /* Zero the context value so cqe will be ignored */
1439 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1440 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1441 }
1442
1443 if (++cq_head >= nescq->hw_cq.cq_size)
1444 cq_head = 0;
1445 }
1446
1447 spin_unlock_irqrestore(&nescq->lock, flags);
1448 }
1449
1450
1451 /**
1452 * nes_destroy_qp
1453 */
1454 static int nes_destroy_qp(struct ib_qp *ibqp)
1455 {
1456 struct nes_qp *nesqp = to_nesqp(ibqp);
1457 struct nes_ucontext *nes_ucontext;
1458 struct ib_qp_attr attr;
1459 struct iw_cm_id *cm_id;
1460 struct iw_cm_event cm_event;
1461 int ret;
1462
1463 atomic_inc(&sw_qps_destroyed);
1464 nesqp->destroyed = 1;
1465
1466 /* Blow away the connection if it exists. */
1467 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1468 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1469 attr.qp_state = IB_QPS_ERR;
1470 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1471 }
1472
1473 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1474 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1475 cm_id = nesqp->cm_id;
1476 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1477 cm_event.status = -ETIMEDOUT;
1478 cm_event.local_addr = cm_id->local_addr;
1479 cm_event.remote_addr = cm_id->remote_addr;
1480 cm_event.private_data = NULL;
1481 cm_event.private_data_len = 0;
1482
1483 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1484 "QP%u. cm_id = %p, refcount = %u. \n",
1485 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1486
1487 cm_id->rem_ref(cm_id);
1488 ret = cm_id->event_handler(cm_id, &cm_event);
1489 if (ret)
1490 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1491 }
1492
1493 if (nesqp->user_mode) {
1494 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1495 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1496 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1497 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1498 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1499 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1500 }
1501 }
1502 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1503 nesqp->sq_kmapped = 0;
1504 kunmap(nesqp->page);
1505 }
1506 } else {
1507 /* Clean any pending completions from the cq(s) */
1508 if (nesqp->nesscq)
1509 nes_clean_cq(nesqp, nesqp->nesscq);
1510
1511 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1512 nes_clean_cq(nesqp, nesqp->nesrcq);
1513 }
1514
1515 nes_rem_ref(&nesqp->ibqp);
1516 return 0;
1517 }
1518
1519
1520 /**
1521 * nes_create_cq
1522 */
1523 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1524 int comp_vector,
1525 struct ib_ucontext *context, struct ib_udata *udata)
1526 {
1527 u64 u64temp;
1528 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1529 struct nes_device *nesdev = nesvnic->nesdev;
1530 struct nes_adapter *nesadapter = nesdev->nesadapter;
1531 struct nes_cq *nescq;
1532 struct nes_ucontext *nes_ucontext = NULL;
1533 struct nes_cqp_request *cqp_request;
1534 void *mem = NULL;
1535 struct nes_hw_cqp_wqe *cqp_wqe;
1536 struct nes_pbl *nespbl = NULL;
1537 struct nes_create_cq_req req;
1538 struct nes_create_cq_resp resp;
1539 u32 cq_num = 0;
1540 u32 opcode = 0;
1541 u32 pbl_entries = 1;
1542 int err;
1543 unsigned long flags;
1544 int ret;
1545
1546 if (entries > nesadapter->max_cqe)
1547 return ERR_PTR(-EINVAL);
1548
1549 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1550 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1551 if (err) {
1552 return ERR_PTR(err);
1553 }
1554
1555 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1556 if (!nescq) {
1557 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1558 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1559 return ERR_PTR(-ENOMEM);
1560 }
1561
1562 nescq->hw_cq.cq_size = max(entries + 1, 5);
1563 nescq->hw_cq.cq_number = cq_num;
1564 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1565
1566
1567 if (context) {
1568 nes_ucontext = to_nesucontext(context);
1569 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1570 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1571 kfree(nescq);
1572 return ERR_PTR(-EFAULT);
1573 }
1574 nesvnic->mcrq_ucontext = nes_ucontext;
1575 nes_ucontext->mcrqf = req.mcrqf;
1576 if (nes_ucontext->mcrqf) {
1577 if (nes_ucontext->mcrqf & 0x80000000)
1578 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1579 else if (nes_ucontext->mcrqf & 0x40000000)
1580 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1581 else
1582 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1583 nescq->mcrqf = nes_ucontext->mcrqf;
1584 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1585 }
1586 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1587 (unsigned long)req.user_cq_buffer, entries);
1588 err = 1;
1589 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1590 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1591 list_del(&nespbl->list);
1592 err = 0;
1593 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1594 nespbl);
1595 break;
1596 }
1597 }
1598 if (err) {
1599 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1600 kfree(nescq);
1601 return ERR_PTR(-EFAULT);
1602 }
1603
1604 pbl_entries = nespbl->pbl_size >> 3;
1605 nescq->cq_mem_size = 0;
1606 } else {
1607 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1608 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1609 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1610
1611 /* allocate the physical buffer space */
1612 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1613 &nescq->hw_cq.cq_pbase);
1614 if (!mem) {
1615 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1616 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1617 kfree(nescq);
1618 return ERR_PTR(-ENOMEM);
1619 }
1620
1621 memset(mem, 0, nescq->cq_mem_size);
1622 nescq->hw_cq.cq_vbase = mem;
1623 nescq->hw_cq.cq_head = 0;
1624 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1625 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1626 (u32)nescq->hw_cq.cq_pbase);
1627 }
1628
1629 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1630 spin_lock_init(&nescq->lock);
1631
1632 /* send CreateCQ request to CQP */
1633 cqp_request = nes_get_cqp_request(nesdev);
1634 if (cqp_request == NULL) {
1635 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1636 if (!context)
1637 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1638 nescq->hw_cq.cq_pbase);
1639 else {
1640 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1641 nespbl->pbl_vbase, nespbl->pbl_pbase);
1642 kfree(nespbl);
1643 }
1644
1645 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1646 kfree(nescq);
1647 return ERR_PTR(-ENOMEM);
1648 }
1649 cqp_request->waiting = 1;
1650 cqp_wqe = &cqp_request->cqp_wqe;
1651
1652 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1653 NES_CQP_CQ_CHK_OVERFLOW |
1654 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1655
1656 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1657
1658 if (pbl_entries != 1) {
1659 if (pbl_entries > 32) {
1660 /* use 4k pbl */
1661 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1662 if (nesadapter->free_4kpbl == 0) {
1663 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1664 nes_free_cqp_request(nesdev, cqp_request);
1665 if (!context)
1666 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1667 nescq->hw_cq.cq_pbase);
1668 else {
1669 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1670 nespbl->pbl_vbase, nespbl->pbl_pbase);
1671 kfree(nespbl);
1672 }
1673 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1674 kfree(nescq);
1675 return ERR_PTR(-ENOMEM);
1676 } else {
1677 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1678 nescq->virtual_cq = 2;
1679 nesadapter->free_4kpbl--;
1680 }
1681 } else {
1682 /* use 256 byte pbl */
1683 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1684 if (nesadapter->free_256pbl == 0) {
1685 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1686 nes_free_cqp_request(nesdev, cqp_request);
1687 if (!context)
1688 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1689 nescq->hw_cq.cq_pbase);
1690 else {
1691 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1692 nespbl->pbl_vbase, nespbl->pbl_pbase);
1693 kfree(nespbl);
1694 }
1695 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1696 kfree(nescq);
1697 return ERR_PTR(-ENOMEM);
1698 } else {
1699 opcode |= NES_CQP_CQ_VIRT;
1700 nescq->virtual_cq = 1;
1701 nesadapter->free_256pbl--;
1702 }
1703 }
1704 }
1705
1706 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1707
1708 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1709 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1710 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1711 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1712
1713 if (context) {
1714 if (pbl_entries != 1)
1715 u64temp = (u64)nespbl->pbl_pbase;
1716 else
1717 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1718 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1719 nes_ucontext->mmap_db_index[0]);
1720 } else {
1721 u64temp = (u64)nescq->hw_cq.cq_pbase;
1722 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1723 }
1724 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1725 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1726 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1727 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1728 cpu_to_le32((u32)(u64temp >> 1));
1729 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1730 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1731
1732 atomic_set(&cqp_request->refcount, 2);
1733 nes_post_cqp_request(nesdev, cqp_request);
1734
1735 /* Wait for CQP */
1736 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1737 nescq->hw_cq.cq_number);
1738 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1739 NES_EVENT_TIMEOUT * 2);
1740 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1741 nescq->hw_cq.cq_number, ret);
1742 if ((!ret) || (cqp_request->major_code)) {
1743 nes_put_cqp_request(nesdev, cqp_request);
1744 if (!context)
1745 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1746 nescq->hw_cq.cq_pbase);
1747 else {
1748 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1749 nespbl->pbl_vbase, nespbl->pbl_pbase);
1750 kfree(nespbl);
1751 }
1752 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1753 kfree(nescq);
1754 return ERR_PTR(-EIO);
1755 }
1756 nes_put_cqp_request(nesdev, cqp_request);
1757
1758 if (context) {
1759 /* free the nespbl */
1760 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1761 nespbl->pbl_pbase);
1762 kfree(nespbl);
1763 resp.cq_id = nescq->hw_cq.cq_number;
1764 resp.cq_size = nescq->hw_cq.cq_size;
1765 resp.mmap_db_index = 0;
1766 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1767 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1768 kfree(nescq);
1769 return ERR_PTR(-EFAULT);
1770 }
1771 }
1772
1773 return &nescq->ibcq;
1774 }
1775
1776
1777 /**
1778 * nes_destroy_cq
1779 */
1780 static int nes_destroy_cq(struct ib_cq *ib_cq)
1781 {
1782 struct nes_cq *nescq;
1783 struct nes_device *nesdev;
1784 struct nes_vnic *nesvnic;
1785 struct nes_adapter *nesadapter;
1786 struct nes_hw_cqp_wqe *cqp_wqe;
1787 struct nes_cqp_request *cqp_request;
1788 unsigned long flags;
1789 u32 opcode = 0;
1790 int ret;
1791
1792 if (ib_cq == NULL)
1793 return 0;
1794
1795 nescq = to_nescq(ib_cq);
1796 nesvnic = to_nesvnic(ib_cq->device);
1797 nesdev = nesvnic->nesdev;
1798 nesadapter = nesdev->nesadapter;
1799
1800 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1801
1802 /* Send DestroyCQ request to CQP */
1803 cqp_request = nes_get_cqp_request(nesdev);
1804 if (cqp_request == NULL) {
1805 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1806 return -ENOMEM;
1807 }
1808 cqp_request->waiting = 1;
1809 cqp_wqe = &cqp_request->cqp_wqe;
1810 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1811 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1812 if (nescq->virtual_cq == 1) {
1813 nesadapter->free_256pbl++;
1814 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1815 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1816 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1817 }
1818 } else if (nescq->virtual_cq == 2) {
1819 nesadapter->free_4kpbl++;
1820 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1821 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1822 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1823 }
1824 opcode |= NES_CQP_CQ_4KB_CHUNK;
1825 }
1826
1827 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1828
1829 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1830 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1831 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1832 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1833 if (!nescq->mcrqf)
1834 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1835
1836 atomic_set(&cqp_request->refcount, 2);
1837 nes_post_cqp_request(nesdev, cqp_request);
1838
1839 /* Wait for CQP */
1840 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1841 nescq->hw_cq.cq_number);
1842 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1843 NES_EVENT_TIMEOUT);
1844 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1845 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1846 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1847 cqp_request->minor_code);
1848 if (!ret) {
1849 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1850 nescq->hw_cq.cq_number);
1851 ret = -ETIME;
1852 } else if (cqp_request->major_code) {
1853 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1854 nescq->hw_cq.cq_number);
1855 ret = -EIO;
1856 } else {
1857 ret = 0;
1858 }
1859 nes_put_cqp_request(nesdev, cqp_request);
1860
1861 if (nescq->cq_mem_size)
1862 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1863 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1864 kfree(nescq);
1865
1866 return ret;
1867 }
1868
1869 /**
1870 * root_256
1871 */
1872 static u32 root_256(struct nes_device *nesdev,
1873 struct nes_root_vpbl *root_vpbl,
1874 struct nes_root_vpbl *new_root,
1875 u16 pbl_count_4k)
1876 {
1877 u64 leaf_pbl;
1878 int i, j, k;
1879
1880 if (pbl_count_4k == 1) {
1881 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1882 512, &new_root->pbl_pbase);
1883
1884 if (new_root->pbl_vbase == NULL)
1885 return 0;
1886
1887 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1888 for (i = 0; i < 16; i++) {
1889 new_root->pbl_vbase[i].pa_low =
1890 cpu_to_le32((u32)leaf_pbl);
1891 new_root->pbl_vbase[i].pa_high =
1892 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1893 leaf_pbl += 256;
1894 }
1895 } else {
1896 for (i = 3; i >= 0; i--) {
1897 j = i * 16;
1898 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1899 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1900 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1901 << 32);
1902 for (k = 1; k < 16; k++) {
1903 leaf_pbl += 256;
1904 root_vpbl->pbl_vbase[j + k].pa_low =
1905 cpu_to_le32((u32)leaf_pbl);
1906 root_vpbl->pbl_vbase[j + k].pa_high =
1907 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1908 }
1909 }
1910 }
1911
1912 return 1;
1913 }
1914
1915
1916 /**
1917 * nes_reg_mr
1918 */
1919 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1920 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1921 dma_addr_t single_buffer, u16 pbl_count_4k,
1922 u16 residual_page_count_4k, int acc, u64 *iova_start,
1923 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1924 {
1925 struct nes_hw_cqp_wqe *cqp_wqe;
1926 struct nes_cqp_request *cqp_request;
1927 unsigned long flags;
1928 int ret;
1929 struct nes_adapter *nesadapter = nesdev->nesadapter;
1930 uint pg_cnt = 0;
1931 u16 pbl_count_256 = 0;
1932 u16 pbl_count = 0;
1933 u8 use_256_pbls = 0;
1934 u8 use_4k_pbls = 0;
1935 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1936 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1937 u32 opcode = 0;
1938 u16 major_code;
1939
1940 /* Register the region with the adapter */
1941 cqp_request = nes_get_cqp_request(nesdev);
1942 if (cqp_request == NULL) {
1943 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1944 return -ENOMEM;
1945 }
1946 cqp_request->waiting = 1;
1947 cqp_wqe = &cqp_request->cqp_wqe;
1948
1949 if (pbl_count_4k) {
1950 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1951
1952 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1953 pbl_count_256 = (pg_cnt + 31) / 32;
1954 if (pg_cnt <= 32) {
1955 if (pbl_count_256 <= nesadapter->free_256pbl)
1956 use_256_pbls = 1;
1957 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1958 use_4k_pbls = 1;
1959 } else if (pg_cnt <= 2048) {
1960 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1961 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1962 use_4k_pbls = 1;
1963 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1964 use_256_pbls = 1;
1965 use_two_level = 1;
1966 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1967 use_4k_pbls = 1;
1968 }
1969 } else {
1970 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1971 use_4k_pbls = 1;
1972 }
1973
1974 if (use_256_pbls) {
1975 pbl_count = pbl_count_256;
1976 nesadapter->free_256pbl -= pbl_count + use_two_level;
1977 } else if (use_4k_pbls) {
1978 pbl_count = pbl_count_4k;
1979 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1980 } else {
1981 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1982 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1983 nes_free_cqp_request(nesdev, cqp_request);
1984 return -ENOMEM;
1985 }
1986
1987 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1988 }
1989
1990 if (use_256_pbls && use_two_level) {
1991 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1992 if (new_root.pbl_pbase != 0)
1993 root_vpbl = &new_root;
1994 } else {
1995 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1996 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1997 use_256_pbls = 0;
1998
1999 if (pbl_count_4k == 1)
2000 use_two_level = 0;
2001 pbl_count = pbl_count_4k;
2002
2003 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2004 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2005 use_4k_pbls = 1;
2006 }
2007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2008
2009 if (use_4k_pbls == 0)
2010 return -ENOMEM;
2011 }
2012 }
2013
2014 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2015 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2016 if (acc & IB_ACCESS_LOCAL_WRITE)
2017 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2018 if (acc & IB_ACCESS_REMOTE_WRITE)
2019 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2020 if (acc & IB_ACCESS_REMOTE_READ)
2021 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2022 if (acc & IB_ACCESS_MW_BIND)
2023 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2024
2025 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2026 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2027 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2028 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2029
2030 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2031 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2032 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2033 cpu_to_le32(nespd->pd_id & 0x00007fff);
2034 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2035
2036 if (pbl_count == 0) {
2037 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2038 } else {
2039 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2040 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2041 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2042
2043 if (use_4k_pbls)
2044 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2045 }
2046 barrier();
2047
2048 atomic_set(&cqp_request->refcount, 2);
2049 nes_post_cqp_request(nesdev, cqp_request);
2050
2051 /* Wait for CQP */
2052 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2053 NES_EVENT_TIMEOUT);
2054 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2055 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2056 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2057 major_code = cqp_request->major_code;
2058 nes_put_cqp_request(nesdev, cqp_request);
2059
2060 if ((!ret || major_code) && pbl_count != 0) {
2061 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2062 if (use_256_pbls)
2063 nesadapter->free_256pbl += pbl_count + use_two_level;
2064 else if (use_4k_pbls)
2065 nesadapter->free_4kpbl += pbl_count + use_two_level;
2066 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2067 }
2068 if (new_root.pbl_pbase)
2069 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2070 new_root.pbl_pbase);
2071
2072 if (!ret)
2073 return -ETIME;
2074 else if (major_code)
2075 return -EIO;
2076
2077 *actual_pbl_cnt = pbl_count + use_two_level;
2078 *used_4k_pbls = use_4k_pbls;
2079 return 0;
2080 }
2081
2082
2083 /**
2084 * nes_reg_phys_mr
2085 */
2086 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2087 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2088 u64 * iova_start)
2089 {
2090 u64 region_length;
2091 struct nes_pd *nespd = to_nespd(ib_pd);
2092 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2093 struct nes_device *nesdev = nesvnic->nesdev;
2094 struct nes_adapter *nesadapter = nesdev->nesadapter;
2095 struct nes_mr *nesmr;
2096 struct ib_mr *ibmr;
2097 struct nes_vpbl vpbl;
2098 struct nes_root_vpbl root_vpbl;
2099 u32 stag;
2100 u32 i;
2101 unsigned long mask;
2102 u32 stag_index = 0;
2103 u32 next_stag_index = 0;
2104 u32 driver_key = 0;
2105 u32 root_pbl_index = 0;
2106 u32 cur_pbl_index = 0;
2107 int err = 0;
2108 int ret = 0;
2109 u16 pbl_count = 0;
2110 u8 single_page = 1;
2111 u8 stag_key = 0;
2112
2113 region_length = 0;
2114 vpbl.pbl_vbase = NULL;
2115 root_vpbl.pbl_vbase = NULL;
2116 root_vpbl.pbl_pbase = 0;
2117
2118 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2119 stag_key = (u8)next_stag_index;
2120
2121 driver_key = 0;
2122
2123 next_stag_index >>= 8;
2124 next_stag_index %= nesadapter->max_mr;
2125 if (num_phys_buf > (1024*512)) {
2126 return ERR_PTR(-E2BIG);
2127 }
2128
2129 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2130 return ERR_PTR(-EINVAL);
2131
2132 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2133 &stag_index, &next_stag_index);
2134 if (err) {
2135 return ERR_PTR(err);
2136 }
2137
2138 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2139 if (!nesmr) {
2140 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2141 return ERR_PTR(-ENOMEM);
2142 }
2143
2144 for (i = 0; i < num_phys_buf; i++) {
2145
2146 if ((i & 0x01FF) == 0) {
2147 if (root_pbl_index == 1) {
2148 /* Allocate the root PBL */
2149 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2150 &root_vpbl.pbl_pbase);
2151 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2152 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2153 if (!root_vpbl.pbl_vbase) {
2154 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2155 vpbl.pbl_pbase);
2156 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2157 kfree(nesmr);
2158 return ERR_PTR(-ENOMEM);
2159 }
2160 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2161 if (!root_vpbl.leaf_vpbl) {
2162 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2163 root_vpbl.pbl_pbase);
2164 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2165 vpbl.pbl_pbase);
2166 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2167 kfree(nesmr);
2168 return ERR_PTR(-ENOMEM);
2169 }
2170 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2171 root_vpbl.pbl_vbase[0].pa_high =
2172 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2173 root_vpbl.leaf_vpbl[0] = vpbl;
2174 }
2175 /* Allocate a 4K buffer for the PBL */
2176 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2177 &vpbl.pbl_pbase);
2178 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2179 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2180 if (!vpbl.pbl_vbase) {
2181 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2182 ibmr = ERR_PTR(-ENOMEM);
2183 kfree(nesmr);
2184 goto reg_phys_err;
2185 }
2186 /* Fill in the root table */
2187 if (1 <= root_pbl_index) {
2188 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2189 cpu_to_le32((u32)vpbl.pbl_pbase);
2190 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2191 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2192 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2193 }
2194 root_pbl_index++;
2195 cur_pbl_index = 0;
2196 }
2197
2198 mask = !buffer_list[i].size;
2199 if (i != 0)
2200 mask |= buffer_list[i].addr;
2201 if (i != num_phys_buf - 1)
2202 mask |= buffer_list[i].addr + buffer_list[i].size;
2203
2204 if (mask & ~PAGE_MASK) {
2205 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2206 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2207 ibmr = ERR_PTR(-EINVAL);
2208 kfree(nesmr);
2209 goto reg_phys_err;
2210 }
2211
2212 region_length += buffer_list[i].size;
2213 if ((i != 0) && (single_page)) {
2214 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2215 single_page = 0;
2216 }
2217 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2218 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2219 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2220 }
2221
2222 stag = stag_index << 8;
2223 stag |= driver_key;
2224 stag += (u32)stag_key;
2225
2226 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2227 " length = 0x%016lX, index = 0x%08X\n",
2228 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2229
2230 /* Make the leaf PBL the root if only one PBL */
2231 if (root_pbl_index == 1) {
2232 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2233 }
2234
2235 if (single_page) {
2236 pbl_count = 0;
2237 } else {
2238 pbl_count = root_pbl_index;
2239 }
2240 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2241 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2242 &nesmr->pbls_used, &nesmr->pbl_4k);
2243
2244 if (ret == 0) {
2245 nesmr->ibmr.rkey = stag;
2246 nesmr->ibmr.lkey = stag;
2247 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2248 ibmr = &nesmr->ibmr;
2249 } else {
2250 kfree(nesmr);
2251 ibmr = ERR_PTR(-ENOMEM);
2252 }
2253
2254 reg_phys_err:
2255 /* free the resources */
2256 if (root_pbl_index == 1) {
2257 /* single PBL case */
2258 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2259 } else {
2260 for (i=0; i<root_pbl_index; i++) {
2261 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2262 root_vpbl.leaf_vpbl[i].pbl_pbase);
2263 }
2264 kfree(root_vpbl.leaf_vpbl);
2265 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2266 root_vpbl.pbl_pbase);
2267 }
2268
2269 return ibmr;
2270 }
2271
2272
2273 /**
2274 * nes_get_dma_mr
2275 */
2276 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2277 {
2278 struct ib_phys_buf bl;
2279 u64 kva = 0;
2280
2281 nes_debug(NES_DBG_MR, "\n");
2282
2283 bl.size = (u64)0xffffffffffULL;
2284 bl.addr = 0;
2285 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2286 }
2287
2288
2289 /**
2290 * nes_reg_user_mr
2291 */
2292 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2293 u64 virt, int acc, struct ib_udata *udata)
2294 {
2295 u64 iova_start;
2296 __le64 *pbl;
2297 u64 region_length;
2298 dma_addr_t last_dma_addr = 0;
2299 dma_addr_t first_dma_addr = 0;
2300 struct nes_pd *nespd = to_nespd(pd);
2301 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2302 struct nes_device *nesdev = nesvnic->nesdev;
2303 struct nes_adapter *nesadapter = nesdev->nesadapter;
2304 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2305 struct ib_umem_chunk *chunk;
2306 struct nes_ucontext *nes_ucontext;
2307 struct nes_pbl *nespbl;
2308 struct nes_mr *nesmr;
2309 struct ib_umem *region;
2310 struct nes_mem_reg_req req;
2311 struct nes_vpbl vpbl;
2312 struct nes_root_vpbl root_vpbl;
2313 int nmap_index, page_index;
2314 int page_count = 0;
2315 int err, pbl_depth = 0;
2316 int chunk_pages;
2317 int ret;
2318 u32 stag;
2319 u32 stag_index = 0;
2320 u32 next_stag_index;
2321 u32 driver_key;
2322 u32 root_pbl_index = 0;
2323 u32 cur_pbl_index = 0;
2324 u32 skip_pages;
2325 u16 pbl_count;
2326 u8 single_page = 1;
2327 u8 stag_key;
2328
2329 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2330 if (IS_ERR(region)) {
2331 return (struct ib_mr *)region;
2332 }
2333
2334 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2335 " offset = %u, page size = %u.\n",
2336 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2337 region->offset, region->page_size);
2338
2339 skip_pages = ((u32)region->offset) >> 12;
2340
2341 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2342 return ERR_PTR(-EFAULT);
2343 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2344
2345 switch (req.reg_type) {
2346 case IWNES_MEMREG_TYPE_MEM:
2347 pbl_depth = 0;
2348 region_length = 0;
2349 vpbl.pbl_vbase = NULL;
2350 root_vpbl.pbl_vbase = NULL;
2351 root_vpbl.pbl_pbase = 0;
2352
2353 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2354 stag_key = (u8)next_stag_index;
2355
2356 driver_key = next_stag_index & 0x70000000;
2357
2358 next_stag_index >>= 8;
2359 next_stag_index %= nesadapter->max_mr;
2360
2361 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2362 nesadapter->max_mr, &stag_index, &next_stag_index);
2363 if (err) {
2364 ib_umem_release(region);
2365 return ERR_PTR(err);
2366 }
2367
2368 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2369 if (!nesmr) {
2370 ib_umem_release(region);
2371 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2372 return ERR_PTR(-ENOMEM);
2373 }
2374 nesmr->region = region;
2375
2376 list_for_each_entry(chunk, &region->chunk_list, list) {
2377 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2378 chunk->nents, chunk->nmap);
2379 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2380 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2381 ib_umem_release(region);
2382 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2383 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2384 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2385 ibmr = ERR_PTR(-EINVAL);
2386 kfree(nesmr);
2387 goto reg_user_mr_err;
2388 }
2389
2390 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2391 ib_umem_release(region);
2392 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2393 stag_index);
2394 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2395 ibmr = ERR_PTR(-EINVAL);
2396 kfree(nesmr);
2397 goto reg_user_mr_err;
2398 }
2399
2400 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2401 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2402 region_length -= skip_pages << 12;
2403 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2404 skip_pages = 0;
2405 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2406 goto enough_pages;
2407 if ((page_count&0x01FF) == 0) {
2408 if (page_count >= 1024 * 512) {
2409 ib_umem_release(region);
2410 nes_free_resource(nesadapter,
2411 nesadapter->allocated_mrs, stag_index);
2412 kfree(nesmr);
2413 ibmr = ERR_PTR(-E2BIG);
2414 goto reg_user_mr_err;
2415 }
2416 if (root_pbl_index == 1) {
2417 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2418 8192, &root_vpbl.pbl_pbase);
2419 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2420 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2421 if (!root_vpbl.pbl_vbase) {
2422 ib_umem_release(region);
2423 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2424 vpbl.pbl_pbase);
2425 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2426 stag_index);
2427 kfree(nesmr);
2428 ibmr = ERR_PTR(-ENOMEM);
2429 goto reg_user_mr_err;
2430 }
2431 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2432 GFP_KERNEL);
2433 if (!root_vpbl.leaf_vpbl) {
2434 ib_umem_release(region);
2435 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2436 root_vpbl.pbl_pbase);
2437 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2438 vpbl.pbl_pbase);
2439 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2440 stag_index);
2441 kfree(nesmr);
2442 ibmr = ERR_PTR(-ENOMEM);
2443 goto reg_user_mr_err;
2444 }
2445 root_vpbl.pbl_vbase[0].pa_low =
2446 cpu_to_le32((u32)vpbl.pbl_pbase);
2447 root_vpbl.pbl_vbase[0].pa_high =
2448 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2449 root_vpbl.leaf_vpbl[0] = vpbl;
2450 }
2451 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2452 &vpbl.pbl_pbase);
2453 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2454 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2455 if (!vpbl.pbl_vbase) {
2456 ib_umem_release(region);
2457 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2458 ibmr = ERR_PTR(-ENOMEM);
2459 kfree(nesmr);
2460 goto reg_user_mr_err;
2461 }
2462 if (1 <= root_pbl_index) {
2463 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2464 cpu_to_le32((u32)vpbl.pbl_pbase);
2465 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2466 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2467 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2468 }
2469 root_pbl_index++;
2470 cur_pbl_index = 0;
2471 }
2472 if (single_page) {
2473 if (page_count != 0) {
2474 if ((last_dma_addr+4096) !=
2475 (sg_dma_address(&chunk->page_list[nmap_index])+
2476 (page_index*4096)))
2477 single_page = 0;
2478 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2479 (page_index*4096);
2480 } else {
2481 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2482 (page_index*4096);
2483 last_dma_addr = first_dma_addr;
2484 }
2485 }
2486
2487 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2488 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2489 (page_index*4096)));
2490 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2491 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2492 (page_index*4096))) >> 32)));
2493 cur_pbl_index++;
2494 page_count++;
2495 }
2496 }
2497 }
2498 enough_pages:
2499 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2500 " stag_key=0x%08x\n",
2501 stag_index, driver_key, stag_key);
2502 stag = stag_index << 8;
2503 stag |= driver_key;
2504 stag += (u32)stag_key;
2505
2506 iova_start = virt;
2507 /* Make the leaf PBL the root if only one PBL */
2508 if (root_pbl_index == 1) {
2509 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2510 }
2511
2512 if (single_page) {
2513 pbl_count = 0;
2514 } else {
2515 pbl_count = root_pbl_index;
2516 first_dma_addr = 0;
2517 }
2518 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2519 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2520 stag, (unsigned int)iova_start,
2521 (unsigned int)region_length, stag_index,
2522 (unsigned long long)region->length, pbl_count);
2523 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2524 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2525 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2526
2527 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2528
2529 if (ret == 0) {
2530 nesmr->ibmr.rkey = stag;
2531 nesmr->ibmr.lkey = stag;
2532 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2533 ibmr = &nesmr->ibmr;
2534 } else {
2535 ib_umem_release(region);
2536 kfree(nesmr);
2537 ibmr = ERR_PTR(-ENOMEM);
2538 }
2539
2540 reg_user_mr_err:
2541 /* free the resources */
2542 if (root_pbl_index == 1) {
2543 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2544 vpbl.pbl_pbase);
2545 } else {
2546 for (page_index=0; page_index<root_pbl_index; page_index++) {
2547 pci_free_consistent(nesdev->pcidev, 4096,
2548 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2549 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2550 }
2551 kfree(root_vpbl.leaf_vpbl);
2552 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2553 root_vpbl.pbl_pbase);
2554 }
2555
2556 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2557
2558 return ibmr;
2559 case IWNES_MEMREG_TYPE_QP:
2560 case IWNES_MEMREG_TYPE_CQ:
2561 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2562 if (!nespbl) {
2563 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2564 ib_umem_release(region);
2565 return ERR_PTR(-ENOMEM);
2566 }
2567 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2568 if (!nesmr) {
2569 ib_umem_release(region);
2570 kfree(nespbl);
2571 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2572 return ERR_PTR(-ENOMEM);
2573 }
2574 nesmr->region = region;
2575 nes_ucontext = to_nesucontext(pd->uobject->context);
2576 pbl_depth = region->length >> 12;
2577 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2578 nespbl->pbl_size = pbl_depth*sizeof(u64);
2579 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2580 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2581 } else {
2582 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2583 }
2584
2585 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2586 nespbl->pbl_size, pbl_depth);
2587 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2588 &nespbl->pbl_pbase);
2589 if (!pbl) {
2590 ib_umem_release(region);
2591 kfree(nesmr);
2592 kfree(nespbl);
2593 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2594 return ERR_PTR(-ENOMEM);
2595 }
2596
2597 nespbl->pbl_vbase = (u64 *)pbl;
2598 nespbl->user_base = start;
2599 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2600 " pbl_vbase=%p user_base=0x%lx\n",
2601 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2602 (void *) nespbl->pbl_vbase, nespbl->user_base);
2603
2604 list_for_each_entry(chunk, &region->chunk_list, list) {
2605 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2606 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2607 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2608 nespbl->page = sg_page(&chunk->page_list[0]);
2609 for (page_index=0; page_index<chunk_pages; page_index++) {
2610 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2611 (sg_dma_address(&chunk->page_list[nmap_index])+
2612 (page_index*4096)));
2613 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2614 (sg_dma_address(&chunk->page_list[nmap_index])+
2615 (page_index*4096)))>>32);
2616 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2617 (unsigned long long)*pbl,
2618 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2619 pbl++;
2620 }
2621 }
2622 }
2623 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2624 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2625 } else {
2626 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2627 }
2628 nesmr->ibmr.rkey = -1;
2629 nesmr->ibmr.lkey = -1;
2630 nesmr->mode = req.reg_type;
2631 return &nesmr->ibmr;
2632 }
2633
2634 return ERR_PTR(-ENOSYS);
2635 }
2636
2637
2638 /**
2639 * nes_dereg_mr
2640 */
2641 static int nes_dereg_mr(struct ib_mr *ib_mr)
2642 {
2643 struct nes_mr *nesmr = to_nesmr(ib_mr);
2644 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2645 struct nes_device *nesdev = nesvnic->nesdev;
2646 struct nes_adapter *nesadapter = nesdev->nesadapter;
2647 struct nes_hw_cqp_wqe *cqp_wqe;
2648 struct nes_cqp_request *cqp_request;
2649 unsigned long flags;
2650 int ret;
2651 u16 major_code;
2652 u16 minor_code;
2653
2654 if (nesmr->region) {
2655 ib_umem_release(nesmr->region);
2656 }
2657 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2658 kfree(nesmr);
2659 return 0;
2660 }
2661
2662 /* Deallocate the region with the adapter */
2663
2664 cqp_request = nes_get_cqp_request(nesdev);
2665 if (cqp_request == NULL) {
2666 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2667 return -ENOMEM;
2668 }
2669 cqp_request->waiting = 1;
2670 cqp_wqe = &cqp_request->cqp_wqe;
2671
2672 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2673 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2674 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2675 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2676 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2677
2678 atomic_set(&cqp_request->refcount, 2);
2679 nes_post_cqp_request(nesdev, cqp_request);
2680
2681 /* Wait for CQP */
2682 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2683 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2684 NES_EVENT_TIMEOUT);
2685 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2686 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2687 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2688
2689 major_code = cqp_request->major_code;
2690 minor_code = cqp_request->minor_code;
2691
2692 nes_put_cqp_request(nesdev, cqp_request);
2693
2694 if (!ret) {
2695 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2696 " ib_mr=%p, rkey = 0x%08X\n",
2697 ib_mr, ib_mr->rkey);
2698 return -ETIME;
2699 } else if (major_code) {
2700 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2701 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2702 major_code, minor_code, ib_mr, ib_mr->rkey);
2703 return -EIO;
2704 }
2705
2706 if (nesmr->pbls_used != 0) {
2707 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2708 if (nesmr->pbl_4k) {
2709 nesadapter->free_4kpbl += nesmr->pbls_used;
2710 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2711 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2712 "exceeded the max(%u)\n",
2713 nesadapter->free_4kpbl,
2714 nesadapter->max_4kpbl);
2715 } else {
2716 nesadapter->free_256pbl += nesmr->pbls_used;
2717 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2718 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2719 "exceeded the max(%u)\n",
2720 nesadapter->free_256pbl,
2721 nesadapter->max_256pbl);
2722 }
2723 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2724 }
2725 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2726 (ib_mr->rkey & 0x0fffff00) >> 8);
2727
2728 kfree(nesmr);
2729
2730 return 0;
2731 }
2732
2733
2734 /**
2735 * show_rev
2736 */
2737 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2738 char *buf)
2739 {
2740 struct nes_ib_device *nesibdev =
2741 container_of(dev, struct nes_ib_device, ibdev.dev);
2742 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2743
2744 nes_debug(NES_DBG_INIT, "\n");
2745 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2746 }
2747
2748
2749 /**
2750 * show_fw_ver
2751 */
2752 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2753 char *buf)
2754 {
2755 struct nes_ib_device *nesibdev =
2756 container_of(dev, struct nes_ib_device, ibdev.dev);
2757 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2758
2759 nes_debug(NES_DBG_INIT, "\n");
2760 return sprintf(buf, "%u.%u\n",
2761 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2762 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2763 }
2764
2765
2766 /**
2767 * show_hca
2768 */
2769 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2770 char *buf)
2771 {
2772 nes_debug(NES_DBG_INIT, "\n");
2773 return sprintf(buf, "NES020\n");
2774 }
2775
2776
2777 /**
2778 * show_board
2779 */
2780 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2781 char *buf)
2782 {
2783 nes_debug(NES_DBG_INIT, "\n");
2784 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2785 }
2786
2787
2788 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2789 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2790 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2791 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2792
2793 static struct device_attribute *nes_dev_attributes[] = {
2794 &dev_attr_hw_rev,
2795 &dev_attr_fw_ver,
2796 &dev_attr_hca_type,
2797 &dev_attr_board_id
2798 };
2799
2800
2801 /**
2802 * nes_query_qp
2803 */
2804 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2805 int attr_mask, struct ib_qp_init_attr *init_attr)
2806 {
2807 struct nes_qp *nesqp = to_nesqp(ibqp);
2808
2809 nes_debug(NES_DBG_QP, "\n");
2810
2811 attr->qp_access_flags = 0;
2812 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2813 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2814 attr->cap.max_recv_sge = 1;
2815 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2816 attr->cap.max_inline_data = 0;
2817 else
2818 attr->cap.max_inline_data = 64;
2819
2820 init_attr->event_handler = nesqp->ibqp.event_handler;
2821 init_attr->qp_context = nesqp->ibqp.qp_context;
2822 init_attr->send_cq = nesqp->ibqp.send_cq;
2823 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2824 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2825 init_attr->cap = attr->cap;
2826
2827 return 0;
2828 }
2829
2830
2831 /**
2832 * nes_hw_modify_qp
2833 */
2834 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2835 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2836 {
2837 struct nes_hw_cqp_wqe *cqp_wqe;
2838 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2839 /* struct iw_cm_event cm_event; */
2840 struct nes_cqp_request *cqp_request;
2841 int ret;
2842 u16 major_code;
2843
2844 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2845 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2846
2847 cqp_request = nes_get_cqp_request(nesdev);
2848 if (cqp_request == NULL) {
2849 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2850 return -ENOMEM;
2851 }
2852 if (wait_completion) {
2853 cqp_request->waiting = 1;
2854 } else {
2855 cqp_request->waiting = 0;
2856 }
2857 cqp_wqe = &cqp_request->cqp_wqe;
2858
2859 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2860 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2861 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2862 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2863 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2864 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2865 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2866
2867 /* If sending a terminate message, fill in the length (in words) */
2868 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2869 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2870 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2871 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2872 }
2873
2874 atomic_set(&cqp_request->refcount, 2);
2875 nes_post_cqp_request(nesdev, cqp_request);
2876
2877 /* Wait for CQP */
2878 if (wait_completion) {
2879 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2880 nesqp->hwqp.qp_id); */
2881 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2882 NES_EVENT_TIMEOUT);
2883 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2884 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2885 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2886 major_code = cqp_request->major_code;
2887 if (major_code) {
2888 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2889 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2890 nesqp->hwqp.qp_id, cqp_request->major_code,
2891 cqp_request->minor_code, next_iwarp_state);
2892 }
2893
2894 nes_put_cqp_request(nesdev, cqp_request);
2895
2896 if (!ret)
2897 return -ETIME;
2898 else if (major_code)
2899 return -EIO;
2900 else
2901 return 0;
2902 } else {
2903 return 0;
2904 }
2905 }
2906
2907
2908 /**
2909 * nes_modify_qp
2910 */
2911 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2912 int attr_mask, struct ib_udata *udata)
2913 {
2914 struct nes_qp *nesqp = to_nesqp(ibqp);
2915 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2916 struct nes_device *nesdev = nesvnic->nesdev;
2917 /* u32 cqp_head; */
2918 /* u32 counter; */
2919 u32 next_iwarp_state = 0;
2920 int err;
2921 unsigned long qplockflags;
2922 int ret;
2923 u16 original_last_aeq;
2924 u8 issue_modify_qp = 0;
2925 u8 dont_wait = 0;
2926
2927 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2928 " iwarp_state=0x%X, refcount=%d\n",
2929 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2930 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2931
2932 spin_lock_irqsave(&nesqp->lock, qplockflags);
2933
2934 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2935 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2936 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2937 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2938
2939 if (attr_mask & IB_QP_STATE) {
2940 switch (attr->qp_state) {
2941 case IB_QPS_INIT:
2942 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2943 nesqp->hwqp.qp_id);
2944 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2945 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2946 return -EINVAL;
2947 }
2948 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2949 issue_modify_qp = 1;
2950 break;
2951 case IB_QPS_RTR:
2952 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2953 nesqp->hwqp.qp_id);
2954 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2955 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2956 return -EINVAL;
2957 }
2958 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2959 issue_modify_qp = 1;
2960 break;
2961 case IB_QPS_RTS:
2962 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2963 nesqp->hwqp.qp_id);
2964 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2965 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2966 return -EINVAL;
2967 }
2968 if (nesqp->cm_id == NULL) {
2969 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2970 nesqp->hwqp.qp_id );
2971 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2972 return -EINVAL;
2973 }
2974 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2975 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2976 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2977 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2978 issue_modify_qp = 1;
2979 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2980 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2981 nesqp->hte_added = 1;
2982 break;
2983 case IB_QPS_SQD:
2984 issue_modify_qp = 1;
2985 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2986 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2987 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2988 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2989 return 0;
2990 } else {
2991 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2992 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2993 " ignored due to current iWARP state\n",
2994 nesqp->hwqp.qp_id);
2995 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2996 return -EINVAL;
2997 }
2998 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2999 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3000 " already done based on hw state.\n",
3001 nesqp->hwqp.qp_id);
3002 issue_modify_qp = 0;
3003 }
3004 switch (nesqp->hw_iwarp_state) {
3005 case NES_AEQE_IWARP_STATE_CLOSING:
3006 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3007 case NES_AEQE_IWARP_STATE_TERMINATE:
3008 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3009 break;
3010 case NES_AEQE_IWARP_STATE_ERROR:
3011 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3012 break;
3013 default:
3014 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3015 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3016 break;
3017 }
3018 }
3019 break;
3020 case IB_QPS_SQE:
3021 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3022 nesqp->hwqp.qp_id);
3023 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3024 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3025 return -EINVAL;
3026 }
3027 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3028 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3029 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3030 issue_modify_qp = 1;
3031 break;
3032 case IB_QPS_ERR:
3033 case IB_QPS_RESET:
3034 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3035 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3036 return -EINVAL;
3037 }
3038 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3039 nesqp->hwqp.qp_id);
3040 if (nesqp->term_flags)
3041 del_timer(&nesqp->terminate_timer);
3042
3043 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3044 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3045 if (nesqp->hte_added) {
3046 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3047 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3048 nesqp->hte_added = 0;
3049 }
3050 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3051 (nesdev->iw_status) &&
3052 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3053 next_iwarp_state |= NES_CQP_QP_RESET;
3054 } else {
3055 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3056 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3057 dont_wait = 1;
3058 }
3059 issue_modify_qp = 1;
3060 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3061 break;
3062 default:
3063 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3064 return -EINVAL;
3065 break;
3066 }
3067
3068 nesqp->ibqp_state = attr->qp_state;
3069 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3070 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3071 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3072 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3073 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3074 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3075 nesqp->iwarp_state);
3076 } else {
3077 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3078 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3079 nesqp->iwarp_state);
3080 }
3081 }
3082
3083 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3084 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3085 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3086 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3087 issue_modify_qp = 1;
3088 }
3089 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3090 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3091 issue_modify_qp = 1;
3092 }
3093 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3094 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3095 issue_modify_qp = 1;
3096 }
3097 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3098 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3099 issue_modify_qp = 1;
3100 }
3101
3102 if (nesqp->user_mode) {
3103 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3104 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3105 issue_modify_qp = 1;
3106 }
3107 }
3108
3109 original_last_aeq = nesqp->last_aeq;
3110 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3111
3112 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3113
3114 ret = 0;
3115
3116
3117 if (issue_modify_qp) {
3118 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3119 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3120 if (ret)
3121 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3122 " failed for QP%u.\n",
3123 next_iwarp_state, nesqp->hwqp.qp_id);
3124
3125 }
3126
3127 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3128 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3129 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3130 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3131 original_last_aeq, nesqp->last_aeq);
3132 if ((!ret) ||
3133 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3134 (ret))) {
3135 if (dont_wait) {
3136 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3137 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3138 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3139 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3140 original_last_aeq, nesqp->last_aeq);
3141 /* this one is for the cm_disconnect thread */
3142 spin_lock_irqsave(&nesqp->lock, qplockflags);
3143 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3144 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3145 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3146 nes_cm_disconn(nesqp);
3147 } else {
3148 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3149 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3150 }
3151 } else {
3152 spin_lock_irqsave(&nesqp->lock, qplockflags);
3153 if (nesqp->cm_id) {
3154 /* These two are for the timer thread */
3155 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3156 nesqp->cm_id->add_ref(nesqp->cm_id);
3157 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3158 " need ae to finish up, original_last_aeq = 0x%04X."
3159 " last_aeq = 0x%04X, scheduling timer.\n",
3160 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3161 original_last_aeq, nesqp->last_aeq);
3162 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3163 }
3164 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3165 } else {
3166 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3167 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3168 " need ae to finish up, original_last_aeq = 0x%04X."
3169 " last_aeq = 0x%04X.\n",
3170 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3171 original_last_aeq, nesqp->last_aeq);
3172 }
3173 }
3174 } else {
3175 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3176 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3177 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3178 original_last_aeq, nesqp->last_aeq);
3179 }
3180 } else {
3181 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3182 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3183 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3184 original_last_aeq, nesqp->last_aeq);
3185 }
3186
3187 err = 0;
3188
3189 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3190 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3191
3192 return err;
3193 }
3194
3195
3196 /**
3197 * nes_muticast_attach
3198 */
3199 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3200 {
3201 nes_debug(NES_DBG_INIT, "\n");
3202 return -ENOSYS;
3203 }
3204
3205
3206 /**
3207 * nes_multicast_detach
3208 */
3209 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3210 {
3211 nes_debug(NES_DBG_INIT, "\n");
3212 return -ENOSYS;
3213 }
3214
3215
3216 /**
3217 * nes_process_mad
3218 */
3219 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3220 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3221 struct ib_mad *in_mad, struct ib_mad *out_mad)
3222 {
3223 nes_debug(NES_DBG_INIT, "\n");
3224 return -ENOSYS;
3225 }
3226
3227 static inline void
3228 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3229 {
3230 int sge_index;
3231 int total_payload_length = 0;
3232 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3233 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3234 ib_wr->sg_list[sge_index].addr);
3235 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3236 ib_wr->sg_list[sge_index].length);
3237 if (uselkey)
3238 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3239 (ib_wr->sg_list[sge_index].lkey));
3240 else
3241 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3242
3243 total_payload_length += ib_wr->sg_list[sge_index].length;
3244 }
3245 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3246 total_payload_length);
3247 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3248 total_payload_length);
3249 }
3250
3251 /**
3252 * nes_post_send
3253 */
3254 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3255 struct ib_send_wr **bad_wr)
3256 {
3257 u64 u64temp;
3258 unsigned long flags = 0;
3259 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3260 struct nes_device *nesdev = nesvnic->nesdev;
3261 struct nes_qp *nesqp = to_nesqp(ibqp);
3262 struct nes_hw_qp_wqe *wqe;
3263 int err = 0;
3264 u32 qsize = nesqp->hwqp.sq_size;
3265 u32 head;
3266 u32 wqe_misc = 0;
3267 u32 wqe_count = 0;
3268 u32 counter;
3269
3270 if (nesqp->ibqp_state > IB_QPS_RTS) {
3271 err = -EINVAL;
3272 goto out;
3273 }
3274
3275 spin_lock_irqsave(&nesqp->lock, flags);
3276
3277 head = nesqp->hwqp.sq_head;
3278
3279 while (ib_wr) {
3280 /* Check for QP error */
3281 if (nesqp->term_flags) {
3282 err = -EINVAL;
3283 break;
3284 }
3285
3286 /* Check for SQ overflow */
3287 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3288 err = -ENOMEM;
3289 break;
3290 }
3291
3292 wqe = &nesqp->hwqp.sq_vbase[head];
3293 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3294 nesqp->hwqp.qp_id, wqe, head); */
3295 nes_fill_init_qp_wqe(wqe, nesqp, head);
3296 u64temp = (u64)(ib_wr->wr_id);
3297 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3298 u64temp);
3299 switch (ib_wr->opcode) {
3300 case IB_WR_SEND:
3301 case IB_WR_SEND_WITH_INV:
3302 if (IB_WR_SEND == ib_wr->opcode) {
3303 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3304 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3305 else
3306 wqe_misc = NES_IWARP_SQ_OP_SEND;
3307 } else {
3308 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3309 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3310 else
3311 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3312
3313 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3314 ib_wr->ex.invalidate_rkey);
3315 }
3316
3317 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3318 err = -EINVAL;
3319 break;
3320 }
3321
3322 if (ib_wr->send_flags & IB_SEND_FENCE)
3323 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3324
3325 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3326 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3327 (ib_wr->sg_list[0].length <= 64)) {
3328 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3329 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3330 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3331 ib_wr->sg_list[0].length);
3332 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3333 } else {
3334 fill_wqe_sg_send(wqe, ib_wr, 1);
3335 }
3336
3337 break;
3338 case IB_WR_RDMA_WRITE:
3339 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3340 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3341 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3342 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3343 err = -EINVAL;
3344 break;
3345 }
3346
3347 if (ib_wr->send_flags & IB_SEND_FENCE)
3348 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3349
3350 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3351 ib_wr->wr.rdma.rkey);
3352 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3353 ib_wr->wr.rdma.remote_addr);
3354
3355 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3356 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3357 (ib_wr->sg_list[0].length <= 64)) {
3358 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3359 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3360 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3361 ib_wr->sg_list[0].length);
3362 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3363 } else {
3364 fill_wqe_sg_send(wqe, ib_wr, 1);
3365 }
3366
3367 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3368 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3369 break;
3370 case IB_WR_RDMA_READ:
3371 case IB_WR_RDMA_READ_WITH_INV:
3372 /* iWARP only supports 1 sge for RDMA reads */
3373 if (ib_wr->num_sge > 1) {
3374 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3375 ib_wr->num_sge);
3376 err = -EINVAL;
3377 break;
3378 }
3379 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3380 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3381 } else {
3382 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3383 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3384 ib_wr->ex.invalidate_rkey);
3385 }
3386
3387 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3388 ib_wr->wr.rdma.remote_addr);
3389 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3390 ib_wr->wr.rdma.rkey);
3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3392 ib_wr->sg_list->length);
3393 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3394 ib_wr->sg_list->addr);
3395 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3396 ib_wr->sg_list->lkey);
3397 break;
3398 case IB_WR_LOCAL_INV:
3399 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3400 set_wqe_32bit_value(wqe->wqe_words,
3401 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3402 ib_wr->ex.invalidate_rkey);
3403 break;
3404 case IB_WR_FAST_REG_MR:
3405 {
3406 int i;
3407 int flags = ib_wr->wr.fast_reg.access_flags;
3408 struct nes_ib_fast_reg_page_list *pnesfrpl =
3409 container_of(ib_wr->wr.fast_reg.page_list,
3410 struct nes_ib_fast_reg_page_list,
3411 ibfrpl);
3412 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3413 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3414
3415 if (ib_wr->wr.fast_reg.page_list_len >
3416 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3417 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3418 err = -EINVAL;
3419 break;
3420 }
3421 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3422 set_wqe_64bit_value(wqe->wqe_words,
3423 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3424 ib_wr->wr.fast_reg.iova_start);
3425 set_wqe_32bit_value(wqe->wqe_words,
3426 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3427 ib_wr->wr.fast_reg.length);
3428 set_wqe_32bit_value(wqe->wqe_words,
3429 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3430 ib_wr->wr.fast_reg.rkey);
3431 /* Set page size: */
3432 if (ib_wr->wr.fast_reg.page_shift == 12) {
3433 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3434 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3435 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3436 } else {
3437 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3438 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3439 err = -EINVAL;
3440 break;
3441 }
3442 /* Set access_flags */
3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3444 if (flags & IB_ACCESS_LOCAL_WRITE)
3445 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3446
3447 if (flags & IB_ACCESS_REMOTE_WRITE)
3448 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3449
3450 if (flags & IB_ACCESS_REMOTE_READ)
3451 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3452
3453 if (flags & IB_ACCESS_MW_BIND)
3454 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3455
3456 /* Fill in PBL info: */
3457 if (ib_wr->wr.fast_reg.page_list_len >
3458 pnesfrpl->ibfrpl.max_page_list_len) {
3459 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3460 " ib_wr=%p, value=%u, max=%u\n",
3461 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3462 pnesfrpl->ibfrpl.max_page_list_len);
3463 err = -EINVAL;
3464 break;
3465 }
3466
3467 set_wqe_64bit_value(wqe->wqe_words,
3468 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3469 pnesfrpl->nes_wqe_pbl.paddr);
3470
3471 set_wqe_32bit_value(wqe->wqe_words,
3472 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3473 ib_wr->wr.fast_reg.page_list_len * 8);
3474
3475 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3476 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3477
3478 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3479 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3480 "page_list_len: %u, wqe_misc: %x\n",
3481 (unsigned long long) ib_wr->wr.fast_reg.iova_start,
3482 ib_wr->wr.fast_reg.length,
3483 ib_wr->wr.fast_reg.rkey,
3484 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
3485 ib_wr->wr.fast_reg.page_list_len,
3486 wqe_misc);
3487 break;
3488 }
3489 default:
3490 /* error */
3491 err = -EINVAL;
3492 break;
3493 }
3494
3495 if (err)
3496 break;
3497
3498 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3499 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3500
3501 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3502
3503 ib_wr = ib_wr->next;
3504 head++;
3505 wqe_count++;
3506 if (head >= qsize)
3507 head = 0;
3508
3509 }
3510
3511 nesqp->hwqp.sq_head = head;
3512 barrier();
3513 while (wqe_count) {
3514 counter = min(wqe_count, ((u32)255));
3515 wqe_count -= counter;
3516 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3517 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3518 }
3519
3520 spin_unlock_irqrestore(&nesqp->lock, flags);
3521
3522 out:
3523 if (err)
3524 *bad_wr = ib_wr;
3525 return err;
3526 }
3527
3528
3529 /**
3530 * nes_post_recv
3531 */
3532 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3533 struct ib_recv_wr **bad_wr)
3534 {
3535 u64 u64temp;
3536 unsigned long flags = 0;
3537 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3538 struct nes_device *nesdev = nesvnic->nesdev;
3539 struct nes_qp *nesqp = to_nesqp(ibqp);
3540 struct nes_hw_qp_wqe *wqe;
3541 int err = 0;
3542 int sge_index;
3543 u32 qsize = nesqp->hwqp.rq_size;
3544 u32 head;
3545 u32 wqe_count = 0;
3546 u32 counter;
3547 u32 total_payload_length;
3548
3549 if (nesqp->ibqp_state > IB_QPS_RTS) {
3550 err = -EINVAL;
3551 goto out;
3552 }
3553
3554 spin_lock_irqsave(&nesqp->lock, flags);
3555
3556 head = nesqp->hwqp.rq_head;
3557
3558 while (ib_wr) {
3559 /* Check for QP error */
3560 if (nesqp->term_flags) {
3561 err = -EINVAL;
3562 break;
3563 }
3564
3565 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3566 err = -EINVAL;
3567 break;
3568 }
3569 /* Check for RQ overflow */
3570 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3571 err = -ENOMEM;
3572 break;
3573 }
3574
3575 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3576 wqe = &nesqp->hwqp.rq_vbase[head];
3577
3578 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3579 nesqp->hwqp.qp_id, wqe, head); */
3580 nes_fill_init_qp_wqe(wqe, nesqp, head);
3581 u64temp = (u64)(ib_wr->wr_id);
3582 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3583 u64temp);
3584 total_payload_length = 0;
3585 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3586 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3587 ib_wr->sg_list[sge_index].addr);
3588 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3589 ib_wr->sg_list[sge_index].length);
3590 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3591 ib_wr->sg_list[sge_index].lkey);
3592
3593 total_payload_length += ib_wr->sg_list[sge_index].length;
3594 }
3595 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3596 total_payload_length);
3597
3598 ib_wr = ib_wr->next;
3599 head++;
3600 wqe_count++;
3601 if (head >= qsize)
3602 head = 0;
3603 }
3604
3605 nesqp->hwqp.rq_head = head;
3606 barrier();
3607 while (wqe_count) {
3608 counter = min(wqe_count, ((u32)255));
3609 wqe_count -= counter;
3610 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3611 }
3612
3613 spin_unlock_irqrestore(&nesqp->lock, flags);
3614
3615 out:
3616 if (err)
3617 *bad_wr = ib_wr;
3618 return err;
3619 }
3620
3621
3622 /**
3623 * nes_poll_cq
3624 */
3625 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3626 {
3627 u64 u64temp;
3628 u64 wrid;
3629 unsigned long flags = 0;
3630 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3631 struct nes_device *nesdev = nesvnic->nesdev;
3632 struct nes_cq *nescq = to_nescq(ibcq);
3633 struct nes_qp *nesqp;
3634 struct nes_hw_cqe cqe;
3635 u32 head;
3636 u32 wq_tail = 0;
3637 u32 cq_size;
3638 u32 cqe_count = 0;
3639 u32 wqe_index;
3640 u32 u32temp;
3641 u32 move_cq_head = 1;
3642 u32 err_code;
3643
3644 nes_debug(NES_DBG_CQ, "\n");
3645
3646 spin_lock_irqsave(&nescq->lock, flags);
3647
3648 head = nescq->hw_cq.cq_head;
3649 cq_size = nescq->hw_cq.cq_size;
3650
3651 while (cqe_count < num_entries) {
3652 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3653 NES_CQE_VALID) == 0)
3654 break;
3655
3656 /*
3657 * Make sure we read CQ entry contents *after*
3658 * we've checked the valid bit.
3659 */
3660 rmb();
3661
3662 cqe = nescq->hw_cq.cq_vbase[head];
3663 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3664 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3665 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3666 /* parse CQE, get completion context from WQE (either rq or sq) */
3667 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3668 ((u64)u32temp);
3669
3670 if (u64temp) {
3671 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3672 memset(entry, 0, sizeof *entry);
3673 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3674 entry->status = IB_WC_SUCCESS;
3675 } else {
3676 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3677 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3678 entry->status = err_code & 0x0000ffff;
3679
3680 /* The rest of the cqe's will be marked as flushed */
3681 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3682 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3683 NES_IWARP_CQE_MINOR_FLUSH);
3684 } else
3685 entry->status = IB_WC_WR_FLUSH_ERR;
3686 }
3687
3688 entry->qp = &nesqp->ibqp;
3689 entry->src_qp = nesqp->hwqp.qp_id;
3690
3691 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3692 if (nesqp->skip_lsmm) {
3693 nesqp->skip_lsmm = 0;
3694 nesqp->hwqp.sq_tail++;
3695 }
3696
3697 /* Working on a SQ Completion*/
3698 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3699 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3700 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3701 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3702 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3703 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3704
3705 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3706 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3707 case NES_IWARP_SQ_OP_RDMAW:
3708 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3709 entry->opcode = IB_WC_RDMA_WRITE;
3710 break;
3711 case NES_IWARP_SQ_OP_RDMAR:
3712 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3713 entry->opcode = IB_WC_RDMA_READ;
3714 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3715 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3716 break;
3717 case NES_IWARP_SQ_OP_SENDINV:
3718 case NES_IWARP_SQ_OP_SENDSEINV:
3719 case NES_IWARP_SQ_OP_SEND:
3720 case NES_IWARP_SQ_OP_SENDSE:
3721 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3722 entry->opcode = IB_WC_SEND;
3723 break;
3724 case NES_IWARP_SQ_OP_LOCINV:
3725 entry->opcode = IB_WR_LOCAL_INV;
3726 break;
3727 case NES_IWARP_SQ_OP_FAST_REG:
3728 entry->opcode = IB_WC_FAST_REG_MR;
3729 break;
3730 }
3731
3732 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3733 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3734 move_cq_head = 0;
3735 wq_tail = nesqp->hwqp.sq_tail;
3736 }
3737 } else {
3738 /* Working on a RQ Completion*/
3739 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3740 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3741 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3742 entry->opcode = IB_WC_RECV;
3743
3744 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3745 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3746 move_cq_head = 0;
3747 wq_tail = nesqp->hwqp.rq_tail;
3748 }
3749 }
3750
3751 entry->wr_id = wrid;
3752 entry++;
3753 cqe_count++;
3754 }
3755
3756 if (move_cq_head) {
3757 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3758 if (++head >= cq_size)
3759 head = 0;
3760 nescq->polled_completions++;
3761
3762 if ((nescq->polled_completions > (cq_size / 2)) ||
3763 (nescq->polled_completions == 255)) {
3764 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3765 " are pending %u of %u.\n",
3766 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3767 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3768 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3769 nescq->polled_completions = 0;
3770 }
3771 } else {
3772 /* Update the wqe index and set status to flush */
3773 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3774 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3775 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3776 cpu_to_le32(wqe_index);
3777 move_cq_head = 1; /* ready for next pass */
3778 }
3779 }
3780
3781 if (nescq->polled_completions) {
3782 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3783 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3784 nescq->polled_completions = 0;
3785 }
3786
3787 nescq->hw_cq.cq_head = head;
3788 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3789 cqe_count, nescq->hw_cq.cq_number);
3790
3791 spin_unlock_irqrestore(&nescq->lock, flags);
3792
3793 return cqe_count;
3794 }
3795
3796
3797 /**
3798 * nes_req_notify_cq
3799 */
3800 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3801 {
3802 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3803 struct nes_device *nesdev = nesvnic->nesdev;
3804 struct nes_cq *nescq = to_nescq(ibcq);
3805 u32 cq_arm;
3806
3807 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3808 nescq->hw_cq.cq_number);
3809
3810 cq_arm = nescq->hw_cq.cq_number;
3811 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3812 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3813 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3814 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3815 else
3816 return -EINVAL;
3817
3818 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3819 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3820
3821 return 0;
3822 }
3823
3824
3825 /**
3826 * nes_init_ofa_device
3827 */
3828 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3829 {
3830 struct nes_ib_device *nesibdev;
3831 struct nes_vnic *nesvnic = netdev_priv(netdev);
3832 struct nes_device *nesdev = nesvnic->nesdev;
3833
3834 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3835 if (nesibdev == NULL) {
3836 return NULL;
3837 }
3838 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3839 nesibdev->ibdev.owner = THIS_MODULE;
3840
3841 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3842 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3843 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3844
3845 nesibdev->ibdev.uverbs_cmd_mask =
3846 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3847 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3848 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3849 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3850 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3851 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3852 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3853 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3854 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3855 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3856 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3857 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3858 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3859 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3860 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3861 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3862 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3863 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3864 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3865 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3866 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3867 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3868
3869 nesibdev->ibdev.phys_port_cnt = 1;
3870 nesibdev->ibdev.num_comp_vectors = 1;
3871 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3872 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3873 nesibdev->ibdev.query_device = nes_query_device;
3874 nesibdev->ibdev.query_port = nes_query_port;
3875 nesibdev->ibdev.query_pkey = nes_query_pkey;
3876 nesibdev->ibdev.query_gid = nes_query_gid;
3877 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3878 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3879 nesibdev->ibdev.mmap = nes_mmap;
3880 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3881 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3882 nesibdev->ibdev.create_ah = nes_create_ah;
3883 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3884 nesibdev->ibdev.create_qp = nes_create_qp;
3885 nesibdev->ibdev.modify_qp = nes_modify_qp;
3886 nesibdev->ibdev.query_qp = nes_query_qp;
3887 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3888 nesibdev->ibdev.create_cq = nes_create_cq;
3889 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3890 nesibdev->ibdev.poll_cq = nes_poll_cq;
3891 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3892 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3893 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3894 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3895 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3896 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3897 nesibdev->ibdev.bind_mw = nes_bind_mw;
3898
3899 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3900 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3901 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3902
3903 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3904 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3905 nesibdev->ibdev.process_mad = nes_process_mad;
3906
3907 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3908 nesibdev->ibdev.post_send = nes_post_send;
3909 nesibdev->ibdev.post_recv = nes_post_recv;
3910
3911 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3912 if (nesibdev->ibdev.iwcm == NULL) {
3913 ib_dealloc_device(&nesibdev->ibdev);
3914 return NULL;
3915 }
3916 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3917 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3918 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3919 nesibdev->ibdev.iwcm->connect = nes_connect;
3920 nesibdev->ibdev.iwcm->accept = nes_accept;
3921 nesibdev->ibdev.iwcm->reject = nes_reject;
3922 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3923 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3924
3925 return nesibdev;
3926 }
3927
3928
3929 /**
3930 * nes_handle_delayed_event
3931 */
3932 static void nes_handle_delayed_event(unsigned long data)
3933 {
3934 struct nes_vnic *nesvnic = (void *) data;
3935
3936 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3937 struct ib_event event;
3938
3939 event.device = &nesvnic->nesibdev->ibdev;
3940 if (!event.device)
3941 goto stop_timer;
3942 event.event = nesvnic->delayed_event;
3943 event.element.port_num = nesvnic->logical_port + 1;
3944 ib_dispatch_event(&event);
3945 }
3946
3947 stop_timer:
3948 nesvnic->event_timer.function = NULL;
3949 }
3950
3951
3952 void nes_port_ibevent(struct nes_vnic *nesvnic)
3953 {
3954 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3955 struct nes_device *nesdev = nesvnic->nesdev;
3956 struct ib_event event;
3957 event.device = &nesibdev->ibdev;
3958 event.element.port_num = nesvnic->logical_port + 1;
3959 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3960
3961 if (!nesvnic->event_timer.function) {
3962 ib_dispatch_event(&event);
3963 nesvnic->last_dispatched_event = event.event;
3964 nesvnic->event_timer.function = nes_handle_delayed_event;
3965 nesvnic->event_timer.data = (unsigned long) nesvnic;
3966 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3967 add_timer(&nesvnic->event_timer);
3968 } else {
3969 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3970 }
3971 nesvnic->delayed_event = event.event;
3972 }
3973
3974
3975 /**
3976 * nes_destroy_ofa_device
3977 */
3978 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3979 {
3980 if (nesibdev == NULL)
3981 return;
3982
3983 nes_unregister_ofa_device(nesibdev);
3984
3985 kfree(nesibdev->ibdev.iwcm);
3986 ib_dealloc_device(&nesibdev->ibdev);
3987 }
3988
3989
3990 /**
3991 * nes_register_ofa_device
3992 */
3993 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3994 {
3995 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3996 struct nes_device *nesdev = nesvnic->nesdev;
3997 struct nes_adapter *nesadapter = nesdev->nesadapter;
3998 int i, ret;
3999
4000 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4001 if (ret) {
4002 return ret;
4003 }
4004
4005 /* Get the resources allocated to this device */
4006 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4007 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4008 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4009 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4010
4011 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4012 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4013 if (ret) {
4014 while (i > 0) {
4015 i--;
4016 device_remove_file(&nesibdev->ibdev.dev,
4017 nes_dev_attributes[i]);
4018 }
4019 ib_unregister_device(&nesibdev->ibdev);
4020 return ret;
4021 }
4022 }
4023
4024 nesvnic->of_device_registered = 1;
4025
4026 return 0;
4027 }
4028
4029
4030 /**
4031 * nes_unregister_ofa_device
4032 */
4033 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4034 {
4035 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4036 int i;
4037
4038 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4039 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4040 }
4041
4042 if (nesvnic->of_device_registered) {
4043 ib_unregister_device(&nesibdev->ibdev);
4044 }
4045
4046 nesvnic->of_device_registered = 0;
4047 }