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RDMA/nes: Change WQ overflow return code
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / infiniband / hw / nes / nes_verbs.c
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 <asm/byteorder.h>
39
40 #include <rdma/ib_verbs.h>
41 #include <rdma/iw_cm.h>
42 #include <rdma/ib_user_verbs.h>
43
44 #include "nes.h"
45
46 #include <rdma/ib_umem.h>
47
48 atomic_t mod_qp_timouts;
49 atomic_t qps_created;
50 atomic_t sw_qps_destroyed;
51
52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
53
54 /**
55 * nes_alloc_mw
56 */
57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
58 struct nes_pd *nespd = to_nespd(ibpd);
59 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
60 struct nes_device *nesdev = nesvnic->nesdev;
61 struct nes_adapter *nesadapter = nesdev->nesadapter;
62 struct nes_cqp_request *cqp_request;
63 struct nes_mr *nesmr;
64 struct ib_mw *ibmw;
65 struct nes_hw_cqp_wqe *cqp_wqe;
66 int ret;
67 u32 stag;
68 u32 stag_index = 0;
69 u32 next_stag_index = 0;
70 u32 driver_key = 0;
71 u8 stag_key = 0;
72
73 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
74 stag_key = (u8)next_stag_index;
75
76 driver_key = 0;
77
78 next_stag_index >>= 8;
79 next_stag_index %= nesadapter->max_mr;
80
81 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
82 nesadapter->max_mr, &stag_index, &next_stag_index);
83 if (ret) {
84 return ERR_PTR(ret);
85 }
86
87 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
88 if (!nesmr) {
89 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
90 return ERR_PTR(-ENOMEM);
91 }
92
93 stag = stag_index << 8;
94 stag |= driver_key;
95 stag += (u32)stag_key;
96
97 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
98 stag, stag_index);
99
100 /* Register the region with the adapter */
101 cqp_request = nes_get_cqp_request(nesdev);
102 if (cqp_request == NULL) {
103 kfree(nesmr);
104 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
105 return ERR_PTR(-ENOMEM);
106 }
107
108 cqp_request->waiting = 1;
109 cqp_wqe = &cqp_request->cqp_wqe;
110
111 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
112 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
113 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
114 NES_CQP_STAG_REM_ACC_EN);
115
116 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
117 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
119
120 atomic_set(&cqp_request->refcount, 2);
121 nes_post_cqp_request(nesdev, cqp_request);
122
123 /* Wait for CQP */
124 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
125 NES_EVENT_TIMEOUT);
126 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
127 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
128 stag, ret, cqp_request->major_code, cqp_request->minor_code);
129 if ((!ret) || (cqp_request->major_code)) {
130 nes_put_cqp_request(nesdev, cqp_request);
131 kfree(nesmr);
132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
133 if (!ret) {
134 return ERR_PTR(-ETIME);
135 } else {
136 return ERR_PTR(-ENOMEM);
137 }
138 }
139 nes_put_cqp_request(nesdev, cqp_request);
140
141 nesmr->ibmw.rkey = stag;
142 nesmr->mode = IWNES_MEMREG_TYPE_MW;
143 ibmw = &nesmr->ibmw;
144 nesmr->pbl_4k = 0;
145 nesmr->pbls_used = 0;
146
147 return ibmw;
148 }
149
150
151 /**
152 * nes_dealloc_mw
153 */
154 static int nes_dealloc_mw(struct ib_mw *ibmw)
155 {
156 struct nes_mr *nesmr = to_nesmw(ibmw);
157 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
158 struct nes_device *nesdev = nesvnic->nesdev;
159 struct nes_adapter *nesadapter = nesdev->nesadapter;
160 struct nes_hw_cqp_wqe *cqp_wqe;
161 struct nes_cqp_request *cqp_request;
162 int err = 0;
163 int ret;
164
165 /* Deallocate the window with the adapter */
166 cqp_request = nes_get_cqp_request(nesdev);
167 if (cqp_request == NULL) {
168 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
169 return -ENOMEM;
170 }
171 cqp_request->waiting = 1;
172 cqp_wqe = &cqp_request->cqp_wqe;
173 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
174 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
176
177 atomic_set(&cqp_request->refcount, 2);
178 nes_post_cqp_request(nesdev, cqp_request);
179
180 /* Wait for CQP */
181 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
182 ibmw->rkey);
183 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
184 NES_EVENT_TIMEOUT);
185 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
186 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
187 ret, cqp_request->major_code, cqp_request->minor_code);
188 if (!ret)
189 err = -ETIME;
190 else if (cqp_request->major_code)
191 err = -EIO;
192
193 nes_put_cqp_request(nesdev, cqp_request);
194
195 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
196 (ibmw->rkey & 0x0fffff00) >> 8);
197 kfree(nesmr);
198
199 return err;
200 }
201
202
203 /**
204 * nes_bind_mw
205 */
206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
207 struct ib_mw_bind *ibmw_bind)
208 {
209 u64 u64temp;
210 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
211 struct nes_device *nesdev = nesvnic->nesdev;
212 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
213 struct nes_qp *nesqp = to_nesqp(ibqp);
214 struct nes_hw_qp_wqe *wqe;
215 unsigned long flags = 0;
216 u32 head;
217 u32 wqe_misc = 0;
218 u32 qsize;
219
220 if (nesqp->ibqp_state > IB_QPS_RTS)
221 return -EINVAL;
222
223 spin_lock_irqsave(&nesqp->lock, flags);
224
225 head = nesqp->hwqp.sq_head;
226 qsize = nesqp->hwqp.sq_tail;
227
228 /* Check for SQ overflow */
229 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
230 spin_unlock_irqrestore(&nesqp->lock, flags);
231 return -ENOMEM;
232 }
233
234 wqe = &nesqp->hwqp.sq_vbase[head];
235 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
236 nes_fill_init_qp_wqe(wqe, nesqp, head);
237 u64temp = ibmw_bind->wr_id;
238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
239 wqe_misc = NES_IWARP_SQ_OP_BIND;
240
241 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
242
243 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
244 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
245
246 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
247 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
248 }
249 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
250 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
251 }
252
253 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
257 ibmw_bind->length);
258 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
259 u64temp = (u64)ibmw_bind->addr;
260 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
261
262 head++;
263 if (head >= qsize)
264 head = 0;
265
266 nesqp->hwqp.sq_head = head;
267 barrier();
268
269 nes_write32(nesdev->regs+NES_WQE_ALLOC,
270 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
271
272 spin_unlock_irqrestore(&nesqp->lock, flags);
273
274 return 0;
275 }
276
277
278 /*
279 * nes_alloc_fast_mr
280 */
281 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
282 u32 stag, u32 page_count)
283 {
284 struct nes_hw_cqp_wqe *cqp_wqe;
285 struct nes_cqp_request *cqp_request;
286 unsigned long flags;
287 int ret;
288 struct nes_adapter *nesadapter = nesdev->nesadapter;
289 u32 opcode = 0;
290 u16 major_code;
291 u64 region_length = page_count * PAGE_SIZE;
292
293
294 cqp_request = nes_get_cqp_request(nesdev);
295 if (cqp_request == NULL) {
296 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
297 return -ENOMEM;
298 }
299 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
300 "region_length = %llu\n",
301 page_count, region_length);
302 cqp_request->waiting = 1;
303 cqp_wqe = &cqp_request->cqp_wqe;
304
305 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
306 if (nesadapter->free_4kpbl > 0) {
307 nesadapter->free_4kpbl--;
308 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
309 } else {
310 /* No 4kpbl's available: */
311 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
312 nes_debug(NES_DBG_MR, "Out of Pbls\n");
313 nes_free_cqp_request(nesdev, cqp_request);
314 return -ENOMEM;
315 }
316
317 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
318 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
319 NES_CQP_STAG_REM_ACC_EN;
320 /*
321 * The current OFED API does not support the zero based TO option.
322 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
323 * the API does not support that ability to have the MR set for local
324 * access only when created and not allow the SQ op to override. Given
325 * this the remote enable must be set here.
326 */
327
328 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
329 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
331
332 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
333 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
334 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
335 cpu_to_le32(nespd->pd_id & 0x00007fff);
336
337 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
338 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
339 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
340 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
341 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
342 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
343 barrier();
344
345 atomic_set(&cqp_request->refcount, 2);
346 nes_post_cqp_request(nesdev, cqp_request);
347
348 /* Wait for CQP */
349 ret = wait_event_timeout(cqp_request->waitq,
350 (0 != cqp_request->request_done),
351 NES_EVENT_TIMEOUT);
352
353 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
354 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
355 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
356 cqp_request->minor_code);
357 major_code = cqp_request->major_code;
358 nes_put_cqp_request(nesdev, cqp_request);
359
360 if (!ret || major_code) {
361 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
362 nesadapter->free_4kpbl++;
363 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
364 }
365
366 if (!ret)
367 return -ETIME;
368 else if (major_code)
369 return -EIO;
370 return 0;
371 }
372
373 /*
374 * nes_alloc_fast_reg_mr
375 */
376 struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
377 {
378 struct nes_pd *nespd = to_nespd(ibpd);
379 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
380 struct nes_device *nesdev = nesvnic->nesdev;
381 struct nes_adapter *nesadapter = nesdev->nesadapter;
382
383 u32 next_stag_index;
384 u8 stag_key = 0;
385 u32 driver_key = 0;
386 int err = 0;
387 u32 stag_index = 0;
388 struct nes_mr *nesmr;
389 u32 stag;
390 int ret;
391 struct ib_mr *ibmr;
392 /*
393 * Note: Set to always use a fixed length single page entry PBL. This is to allow
394 * for the fast_reg_mr operation to always know the size of the PBL.
395 */
396 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
397 return ERR_PTR(-E2BIG);
398
399 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
400 stag_key = (u8)next_stag_index;
401 next_stag_index >>= 8;
402 next_stag_index %= nesadapter->max_mr;
403
404 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
405 nesadapter->max_mr, &stag_index,
406 &next_stag_index);
407 if (err)
408 return ERR_PTR(err);
409
410 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
411 if (!nesmr) {
412 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
413 return ERR_PTR(-ENOMEM);
414 }
415
416 stag = stag_index << 8;
417 stag |= driver_key;
418 stag += (u32)stag_key;
419
420 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
421 stag, stag_index);
422
423 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
424
425 if (ret == 0) {
426 nesmr->ibmr.rkey = stag;
427 nesmr->ibmr.lkey = stag;
428 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
429 ibmr = &nesmr->ibmr;
430 } else {
431 kfree(nesmr);
432 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
433 ibmr = ERR_PTR(-ENOMEM);
434 }
435 return ibmr;
436 }
437
438 /*
439 * nes_alloc_fast_reg_page_list
440 */
441 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
442 struct ib_device *ibdev,
443 int page_list_len)
444 {
445 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
446 struct nes_device *nesdev = nesvnic->nesdev;
447 struct ib_fast_reg_page_list *pifrpl;
448 struct nes_ib_fast_reg_page_list *pnesfrpl;
449
450 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
451 return ERR_PTR(-E2BIG);
452 /*
453 * Allocate the ib_fast_reg_page_list structure, the
454 * nes_fast_bpl structure, and the PLB table.
455 */
456 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
457 page_list_len * sizeof(u64), GFP_KERNEL);
458
459 if (!pnesfrpl)
460 return ERR_PTR(-ENOMEM);
461
462 pifrpl = &pnesfrpl->ibfrpl;
463 pifrpl->page_list = &pnesfrpl->pbl;
464 pifrpl->max_page_list_len = page_list_len;
465 /*
466 * Allocate the WQE PBL
467 */
468 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
469 page_list_len * sizeof(u64),
470 &pnesfrpl->nes_wqe_pbl.paddr);
471
472 if (!pnesfrpl->nes_wqe_pbl.kva) {
473 kfree(pnesfrpl);
474 return ERR_PTR(-ENOMEM);
475 }
476 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
477 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
478 "pbl.paddr= %p\n", pnesfrpl, &pnesfrpl->ibfrpl,
479 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
480 (void *)pnesfrpl->nes_wqe_pbl.paddr);
481
482 return pifrpl;
483 }
484
485 /*
486 * nes_free_fast_reg_page_list
487 */
488 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
489 {
490 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
491 struct nes_device *nesdev = nesvnic->nesdev;
492 struct nes_ib_fast_reg_page_list *pnesfrpl;
493
494 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
495 /*
496 * Free the WQE PBL.
497 */
498 pci_free_consistent(nesdev->pcidev,
499 pifrpl->max_page_list_len * sizeof(u64),
500 pnesfrpl->nes_wqe_pbl.kva,
501 pnesfrpl->nes_wqe_pbl.paddr);
502 /*
503 * Free the PBL structure
504 */
505 kfree(pnesfrpl);
506 }
507
508 /**
509 * nes_query_device
510 */
511 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
512 {
513 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
514 struct nes_device *nesdev = nesvnic->nesdev;
515 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
516
517 memset(props, 0, sizeof(*props));
518 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
519
520 props->fw_ver = nesdev->nesadapter->fw_ver;
521 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
522 props->vendor_id = nesdev->nesadapter->vendor_id;
523 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
524 props->hw_ver = nesdev->nesadapter->hw_rev;
525 props->max_mr_size = 0x80000000;
526 props->max_qp = nesibdev->max_qp;
527 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
528 props->max_sge = nesdev->nesadapter->max_sge;
529 props->max_cq = nesibdev->max_cq;
530 props->max_cqe = nesdev->nesadapter->max_cqe;
531 props->max_mr = nesibdev->max_mr;
532 props->max_mw = nesibdev->max_mr;
533 props->max_pd = nesibdev->max_pd;
534 props->max_sge_rd = 1;
535 switch (nesdev->nesadapter->max_irrq_wr) {
536 case 0:
537 props->max_qp_rd_atom = 2;
538 break;
539 case 1:
540 props->max_qp_rd_atom = 8;
541 break;
542 case 2:
543 props->max_qp_rd_atom = 32;
544 break;
545 case 3:
546 props->max_qp_rd_atom = 64;
547 break;
548 default:
549 props->max_qp_rd_atom = 0;
550 }
551 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
552 props->atomic_cap = IB_ATOMIC_NONE;
553 props->max_map_per_fmr = 1;
554
555 return 0;
556 }
557
558
559 /**
560 * nes_query_port
561 */
562 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
563 {
564 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
565 struct net_device *netdev = nesvnic->netdev;
566
567 memset(props, 0, sizeof(*props));
568
569 props->max_mtu = IB_MTU_4096;
570
571 if (netdev->mtu >= 4096)
572 props->active_mtu = IB_MTU_4096;
573 else if (netdev->mtu >= 2048)
574 props->active_mtu = IB_MTU_2048;
575 else if (netdev->mtu >= 1024)
576 props->active_mtu = IB_MTU_1024;
577 else if (netdev->mtu >= 512)
578 props->active_mtu = IB_MTU_512;
579 else
580 props->active_mtu = IB_MTU_256;
581
582 props->lid = 1;
583 props->lmc = 0;
584 props->sm_lid = 0;
585 props->sm_sl = 0;
586 if (nesvnic->linkup)
587 props->state = IB_PORT_ACTIVE;
588 else
589 props->state = IB_PORT_DOWN;
590 props->phys_state = 0;
591 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
592 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
593 props->gid_tbl_len = 1;
594 props->pkey_tbl_len = 1;
595 props->qkey_viol_cntr = 0;
596 props->active_width = IB_WIDTH_4X;
597 props->active_speed = 1;
598 props->max_msg_sz = 0x80000000;
599
600 return 0;
601 }
602
603
604 /**
605 * nes_modify_port
606 */
607 static int nes_modify_port(struct ib_device *ibdev, u8 port,
608 int port_modify_mask, struct ib_port_modify *props)
609 {
610 return 0;
611 }
612
613
614 /**
615 * nes_query_pkey
616 */
617 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
618 {
619 *pkey = 0;
620 return 0;
621 }
622
623
624 /**
625 * nes_query_gid
626 */
627 static int nes_query_gid(struct ib_device *ibdev, u8 port,
628 int index, union ib_gid *gid)
629 {
630 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
631
632 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
633 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
634
635 return 0;
636 }
637
638
639 /**
640 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
641 * of all objects associated with a particular user-mode client.
642 */
643 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
644 struct ib_udata *udata)
645 {
646 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
647 struct nes_device *nesdev = nesvnic->nesdev;
648 struct nes_adapter *nesadapter = nesdev->nesadapter;
649 struct nes_alloc_ucontext_req req;
650 struct nes_alloc_ucontext_resp uresp;
651 struct nes_ucontext *nes_ucontext;
652 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
653
654
655 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
656 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
657 return ERR_PTR(-EINVAL);
658 }
659
660 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
661 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
662 req.userspace_ver, NES_ABI_USERSPACE_VER);
663 return ERR_PTR(-EINVAL);
664 }
665
666
667 memset(&uresp, 0, sizeof uresp);
668
669 uresp.max_qps = nesibdev->max_qp;
670 uresp.max_pds = nesibdev->max_pd;
671 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
672 uresp.virtwq = nesadapter->virtwq;
673 uresp.kernel_ver = NES_ABI_KERNEL_VER;
674
675 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
676 if (!nes_ucontext)
677 return ERR_PTR(-ENOMEM);
678
679 nes_ucontext->nesdev = nesdev;
680 nes_ucontext->mmap_wq_offset = uresp.max_pds;
681 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
682 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
683 PAGE_SIZE;
684
685
686 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
687 kfree(nes_ucontext);
688 return ERR_PTR(-EFAULT);
689 }
690
691 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
692 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
693 atomic_set(&nes_ucontext->usecnt, 1);
694 return &nes_ucontext->ibucontext;
695 }
696
697
698 /**
699 * nes_dealloc_ucontext
700 */
701 static int nes_dealloc_ucontext(struct ib_ucontext *context)
702 {
703 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
704 /* struct nes_device *nesdev = nesvnic->nesdev; */
705 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
706
707 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
708 return 0;
709 kfree(nes_ucontext);
710 return 0;
711 }
712
713
714 /**
715 * nes_mmap
716 */
717 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
718 {
719 unsigned long index;
720 struct nes_vnic *nesvnic = to_nesvnic(context->device);
721 struct nes_device *nesdev = nesvnic->nesdev;
722 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
723 struct nes_ucontext *nes_ucontext;
724 struct nes_qp *nesqp;
725
726 nes_ucontext = to_nesucontext(context);
727
728
729 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
730 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
731 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
732 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
733 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
734 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
735 return -EFAULT;
736 }
737 nesqp = nes_ucontext->mmap_nesqp[index];
738 if (nesqp == NULL) {
739 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
740 return -EFAULT;
741 }
742 if (remap_pfn_range(vma, vma->vm_start,
743 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
744 vma->vm_end - vma->vm_start,
745 vma->vm_page_prot)) {
746 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
747 return -EAGAIN;
748 }
749 vma->vm_private_data = nesqp;
750 return 0;
751 } else {
752 index = vma->vm_pgoff;
753 if (!test_bit(index, nes_ucontext->allocated_doorbells))
754 return -EFAULT;
755
756 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
757 if (io_remap_pfn_range(vma, vma->vm_start,
758 (nesdev->doorbell_start +
759 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
760 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
761 return -EAGAIN;
762 vma->vm_private_data = nes_ucontext;
763 return 0;
764 }
765
766 return -ENOSYS;
767 }
768
769
770 /**
771 * nes_alloc_pd
772 */
773 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
774 struct ib_ucontext *context, struct ib_udata *udata)
775 {
776 struct nes_pd *nespd;
777 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
778 struct nes_device *nesdev = nesvnic->nesdev;
779 struct nes_adapter *nesadapter = nesdev->nesadapter;
780 struct nes_ucontext *nesucontext;
781 struct nes_alloc_pd_resp uresp;
782 u32 pd_num = 0;
783 int err;
784
785 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
786 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
787 atomic_read(&nesvnic->netdev->refcnt));
788
789 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
790 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
791 if (err) {
792 return ERR_PTR(err);
793 }
794
795 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
796 if (!nespd) {
797 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
798 return ERR_PTR(-ENOMEM);
799 }
800
801 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
802 nespd, nesvnic->nesibdev->ibdev.name);
803
804 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
805
806 if (context) {
807 nesucontext = to_nesucontext(context);
808 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
809 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
810 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
811 nespd->mmap_db_index, nespd->pd_id);
812 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
813 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
814 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
815 kfree(nespd);
816 return ERR_PTR(-ENOMEM);
817 }
818
819 uresp.pd_id = nespd->pd_id;
820 uresp.mmap_db_index = nespd->mmap_db_index;
821 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
822 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
823 kfree(nespd);
824 return ERR_PTR(-EFAULT);
825 }
826
827 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
828 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
829 nesucontext->first_free_db = nespd->mmap_db_index + 1;
830 }
831
832 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
833 return &nespd->ibpd;
834 }
835
836
837 /**
838 * nes_dealloc_pd
839 */
840 static int nes_dealloc_pd(struct ib_pd *ibpd)
841 {
842 struct nes_ucontext *nesucontext;
843 struct nes_pd *nespd = to_nespd(ibpd);
844 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
845 struct nes_device *nesdev = nesvnic->nesdev;
846 struct nes_adapter *nesadapter = nesdev->nesadapter;
847
848 if ((ibpd->uobject) && (ibpd->uobject->context)) {
849 nesucontext = to_nesucontext(ibpd->uobject->context);
850 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
851 nespd->mmap_db_index);
852 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
853 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
854 if (nesucontext->first_free_db > nespd->mmap_db_index) {
855 nesucontext->first_free_db = nespd->mmap_db_index;
856 }
857 }
858
859 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
860 nespd->pd_id, nespd);
861 nes_free_resource(nesadapter, nesadapter->allocated_pds,
862 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
863 kfree(nespd);
864
865 return 0;
866 }
867
868
869 /**
870 * nes_create_ah
871 */
872 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
873 {
874 return ERR_PTR(-ENOSYS);
875 }
876
877
878 /**
879 * nes_destroy_ah
880 */
881 static int nes_destroy_ah(struct ib_ah *ah)
882 {
883 return -ENOSYS;
884 }
885
886
887 /**
888 * nes_get_encoded_size
889 */
890 static inline u8 nes_get_encoded_size(int *size)
891 {
892 u8 encoded_size = 0;
893 if (*size <= 32) {
894 *size = 32;
895 encoded_size = 1;
896 } else if (*size <= 128) {
897 *size = 128;
898 encoded_size = 2;
899 } else if (*size <= 512) {
900 *size = 512;
901 encoded_size = 3;
902 }
903 return (encoded_size);
904 }
905
906
907
908 /**
909 * nes_setup_virt_qp
910 */
911 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
912 struct nes_vnic *nesvnic, int sq_size, int rq_size)
913 {
914 unsigned long flags;
915 void *mem;
916 __le64 *pbl = NULL;
917 __le64 *tpbl;
918 __le64 *pblbuffer;
919 struct nes_device *nesdev = nesvnic->nesdev;
920 struct nes_adapter *nesadapter = nesdev->nesadapter;
921 u32 pbl_entries;
922 u8 rq_pbl_entries;
923 u8 sq_pbl_entries;
924
925 pbl_entries = nespbl->pbl_size >> 3;
926 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
927 nespbl->pbl_size, pbl_entries,
928 (void *)nespbl->pbl_vbase,
929 (unsigned long) nespbl->pbl_pbase);
930 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
931 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
932 /* the first pbl to be fro the rq_vbase... */
933 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
934 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
935 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
936 if (!nespbl->page) {
937 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
938 kfree(nespbl);
939 return -ENOMEM;
940 }
941
942 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
943 nesqp->page = nespbl->page;
944 if (!nesqp->hwqp.sq_vbase) {
945 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
946 kfree(nespbl);
947 return -ENOMEM;
948 }
949
950 /* Now to get to sq.. we need to calculate how many */
951 /* PBL entries were used by the rq.. */
952 pbl += sq_pbl_entries;
953 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
954 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
955 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
956
957 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
958 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
959 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
960 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
961 if (!nesadapter->free_256pbl) {
962 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
963 nespbl->pbl_pbase);
964 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
965 kunmap(nesqp->page);
966 kfree(nespbl);
967 return -ENOMEM;
968 }
969 nesadapter->free_256pbl--;
970 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
971
972 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
973 pblbuffer = nesqp->pbl_vbase;
974 if (!nesqp->pbl_vbase) {
975 /* memory allocated during nes_reg_user_mr() */
976 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
977 nespbl->pbl_pbase);
978 kfree(nespbl);
979 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
980 nesadapter->free_256pbl++;
981 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
982 kunmap(nesqp->page);
983 return -ENOMEM;
984 }
985 memset(nesqp->pbl_vbase, 0, 256);
986 /* fill in the page address in the pbl buffer.. */
987 tpbl = pblbuffer + 16;
988 pbl = (__le64 *)nespbl->pbl_vbase;
989 while (sq_pbl_entries--)
990 *tpbl++ = *pbl++;
991 tpbl = pblbuffer;
992 while (rq_pbl_entries--)
993 *tpbl++ = *pbl++;
994
995 /* done with memory allocated during nes_reg_user_mr() */
996 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
997 nespbl->pbl_pbase);
998 kfree(nespbl);
999
1000 nesqp->qp_mem_size =
1001 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1002 /* Round up to a multiple of a page */
1003 nesqp->qp_mem_size += PAGE_SIZE - 1;
1004 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1005
1006 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1007 &nesqp->hwqp.q2_pbase);
1008
1009 if (!mem) {
1010 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1011 nesqp->pbl_vbase = NULL;
1012 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1013 nesadapter->free_256pbl++;
1014 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1015 kunmap(nesqp->page);
1016 return -ENOMEM;
1017 }
1018 nesqp->sq_kmapped = 1;
1019 nesqp->hwqp.q2_vbase = mem;
1020 mem += 256;
1021 memset(nesqp->hwqp.q2_vbase, 0, 256);
1022 nesqp->nesqp_context = mem;
1023 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1024 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1025
1026 return 0;
1027 }
1028
1029
1030 /**
1031 * nes_setup_mmap_qp
1032 */
1033 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1034 int sq_size, int rq_size)
1035 {
1036 void *mem;
1037 struct nes_device *nesdev = nesvnic->nesdev;
1038
1039 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1040 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1041 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1042 256; /* this is Q2 */
1043 /* Round up to a multiple of a page */
1044 nesqp->qp_mem_size += PAGE_SIZE - 1;
1045 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1046
1047 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1048 &nesqp->hwqp.sq_pbase);
1049 if (!mem)
1050 return -ENOMEM;
1051 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1052 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1053 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1054
1055 memset(mem, 0, nesqp->qp_mem_size);
1056
1057 nesqp->hwqp.sq_vbase = mem;
1058 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1059
1060 nesqp->hwqp.rq_vbase = mem;
1061 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1062 sizeof(struct nes_hw_qp_wqe) * sq_size;
1063 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1064
1065 nesqp->hwqp.q2_vbase = mem;
1066 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1067 sizeof(struct nes_hw_qp_wqe) * rq_size;
1068 mem += 256;
1069 memset(nesqp->hwqp.q2_vbase, 0, 256);
1070
1071 nesqp->nesqp_context = mem;
1072 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1073 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1074 return 0;
1075 }
1076
1077
1078 /**
1079 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1080 */
1081 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1082 struct nes_qp *nesqp, int virt_wqs)
1083 {
1084 unsigned long flags;
1085 struct nes_adapter *nesadapter = nesdev->nesadapter;
1086 if (!virt_wqs) {
1087 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1088 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1089 }else {
1090 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1091 nesadapter->free_256pbl++;
1092 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1093 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1094 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1095 nesqp->pbl_vbase = NULL;
1096 if (nesqp->sq_kmapped) {
1097 nesqp->sq_kmapped = 0;
1098 kunmap(nesqp->page);
1099 }
1100 }
1101 }
1102
1103
1104 /**
1105 * nes_create_qp
1106 */
1107 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1108 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1109 {
1110 u64 u64temp= 0;
1111 u64 u64nesqp = 0;
1112 struct nes_pd *nespd = to_nespd(ibpd);
1113 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1114 struct nes_device *nesdev = nesvnic->nesdev;
1115 struct nes_adapter *nesadapter = nesdev->nesadapter;
1116 struct nes_qp *nesqp;
1117 struct nes_cq *nescq;
1118 struct nes_ucontext *nes_ucontext;
1119 struct nes_hw_cqp_wqe *cqp_wqe;
1120 struct nes_cqp_request *cqp_request;
1121 struct nes_create_qp_req req;
1122 struct nes_create_qp_resp uresp;
1123 struct nes_pbl *nespbl = NULL;
1124 u32 qp_num = 0;
1125 u32 opcode = 0;
1126 /* u32 counter = 0; */
1127 void *mem;
1128 unsigned long flags;
1129 int ret;
1130 int err;
1131 int virt_wqs = 0;
1132 int sq_size;
1133 int rq_size;
1134 u8 sq_encoded_size;
1135 u8 rq_encoded_size;
1136 /* int counter; */
1137
1138 if (init_attr->create_flags)
1139 return ERR_PTR(-EINVAL);
1140
1141 atomic_inc(&qps_created);
1142 switch (init_attr->qp_type) {
1143 case IB_QPT_RC:
1144 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1145 init_attr->cap.max_inline_data = 0;
1146 } else {
1147 init_attr->cap.max_inline_data = 64;
1148 }
1149 sq_size = init_attr->cap.max_send_wr;
1150 rq_size = init_attr->cap.max_recv_wr;
1151
1152 /* check if the encoded sizes are OK or not... */
1153 sq_encoded_size = nes_get_encoded_size(&sq_size);
1154 rq_encoded_size = nes_get_encoded_size(&rq_size);
1155
1156 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1157 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1158 rq_size, sq_size);
1159 return ERR_PTR(-EINVAL);
1160 }
1161
1162 init_attr->cap.max_send_wr = sq_size -2;
1163 init_attr->cap.max_recv_wr = rq_size -1;
1164 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1165
1166 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1167 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1168 if (ret) {
1169 return ERR_PTR(ret);
1170 }
1171
1172 /* Need 512 (actually now 1024) byte alignment on this structure */
1173 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1174 if (!mem) {
1175 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1176 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1177 return ERR_PTR(-ENOMEM);
1178 }
1179 u64nesqp = (unsigned long)mem;
1180 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1181 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1182 u64nesqp &= ~u64temp;
1183 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1184 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1185 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1186 nesqp->allocated_buffer = mem;
1187
1188 if (udata) {
1189 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1190 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1191 kfree(nesqp->allocated_buffer);
1192 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1193 return NULL;
1194 }
1195 if (req.user_wqe_buffers) {
1196 virt_wqs = 1;
1197 }
1198 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1199 nesqp->user_mode = 1;
1200 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1201 if (virt_wqs) {
1202 err = 1;
1203 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1204 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1205 list_del(&nespbl->list);
1206 err = 0;
1207 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1208 nespbl, nespbl->user_base);
1209 break;
1210 }
1211 }
1212 if (err) {
1213 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1214 (long long unsigned int)req.user_wqe_buffers);
1215 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1216 kfree(nesqp->allocated_buffer);
1217 return ERR_PTR(-EFAULT);
1218 }
1219 }
1220
1221 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1222 nesqp->mmap_sq_db_index =
1223 find_next_zero_bit(nes_ucontext->allocated_wqs,
1224 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1225 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1226 nespd->mmap_db_index); */
1227 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1228 nes_debug(NES_DBG_QP,
1229 "db index > max user regions, failing create QP\n");
1230 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1231 if (virt_wqs) {
1232 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1233 nespbl->pbl_pbase);
1234 kfree(nespbl);
1235 }
1236 kfree(nesqp->allocated_buffer);
1237 return ERR_PTR(-ENOMEM);
1238 }
1239 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1240 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1241 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1242 } else {
1243 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1244 kfree(nesqp->allocated_buffer);
1245 return ERR_PTR(-EFAULT);
1246 }
1247 }
1248 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1249 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1250 if (err) {
1251 nes_debug(NES_DBG_QP,
1252 "error geting qp mem code = %d\n", err);
1253 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1254 kfree(nesqp->allocated_buffer);
1255 return ERR_PTR(-ENOMEM);
1256 }
1257
1258 nesqp->hwqp.sq_size = sq_size;
1259 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1260 nesqp->hwqp.sq_head = 1;
1261 nesqp->hwqp.rq_size = rq_size;
1262 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1263 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1264 (void *)nesqp->nesqp_context_pbase);
1265 */
1266 nesqp->hwqp.qp_id = qp_num;
1267 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1268 nesqp->nespd = nespd;
1269
1270 nescq = to_nescq(init_attr->send_cq);
1271 nesqp->nesscq = nescq;
1272 nescq = to_nescq(init_attr->recv_cq);
1273 nesqp->nesrcq = nescq;
1274
1275 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1276 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1277 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1278 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1279 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1280 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1281 if (!udata) {
1282 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1283 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1284 }
1285 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1286 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1287 u64temp = (u64)nesqp->hwqp.sq_pbase;
1288 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1289 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1290
1291
1292 if (!virt_wqs) {
1293 u64temp = (u64)nesqp->hwqp.sq_pbase;
1294 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1295 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1296 u64temp = (u64)nesqp->hwqp.rq_pbase;
1297 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1298 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1299 } else {
1300 u64temp = (u64)nesqp->pbl_pbase;
1301 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1302 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1303 }
1304
1305 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1306 nesvnic->next_qp_nic_index,
1307 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1308 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1309 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1310 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1311 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1312 nesvnic->next_qp_nic_index++;
1313 if ((nesvnic->next_qp_nic_index > 3) ||
1314 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1315 nesvnic->next_qp_nic_index = 0;
1316 }
1317 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1318
1319 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1320 u64temp = (u64)nesqp->hwqp.q2_pbase;
1321 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1322 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1323 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1324 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1325 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1326 ((((u32)nesadapter->max_irrq_wr) <<
1327 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1328 if (disable_mpa_crc) {
1329 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1330 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1331 }
1332
1333
1334 /* Create the QP */
1335 cqp_request = nes_get_cqp_request(nesdev);
1336 if (cqp_request == NULL) {
1337 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1338 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1340 kfree(nesqp->allocated_buffer);
1341 return ERR_PTR(-ENOMEM);
1342 }
1343 cqp_request->waiting = 1;
1344 cqp_wqe = &cqp_request->cqp_wqe;
1345
1346 if (!virt_wqs) {
1347 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1348 NES_CQP_QP_IWARP_STATE_IDLE;
1349 } else {
1350 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1351 NES_CQP_QP_IWARP_STATE_IDLE;
1352 }
1353 opcode |= NES_CQP_QP_CQS_VALID;
1354 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1355 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1356 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1357
1358 u64temp = (u64)nesqp->nesqp_context_pbase;
1359 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1360
1361 atomic_set(&cqp_request->refcount, 2);
1362 nes_post_cqp_request(nesdev, cqp_request);
1363
1364 /* Wait for CQP */
1365 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1366 nesqp->hwqp.qp_id);
1367 ret = wait_event_timeout(cqp_request->waitq,
1368 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1369 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1370 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1371 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1372 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1373 cqp_request->major_code, cqp_request->minor_code);
1374 if ((!ret) || (cqp_request->major_code)) {
1375 nes_put_cqp_request(nesdev, cqp_request);
1376 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1377 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1378 kfree(nesqp->allocated_buffer);
1379 if (!ret) {
1380 return ERR_PTR(-ETIME);
1381 } else {
1382 return ERR_PTR(-EIO);
1383 }
1384 }
1385
1386 nes_put_cqp_request(nesdev, cqp_request);
1387
1388 if (ibpd->uobject) {
1389 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1390 uresp.actual_sq_size = sq_size;
1391 uresp.actual_rq_size = rq_size;
1392 uresp.qp_id = nesqp->hwqp.qp_id;
1393 uresp.nes_drv_opt = nes_drv_opt;
1394 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1395 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1396 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1397 kfree(nesqp->allocated_buffer);
1398 return ERR_PTR(-EFAULT);
1399 }
1400 }
1401
1402 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1403 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1404 spin_lock_init(&nesqp->lock);
1405 nes_add_ref(&nesqp->ibqp);
1406 break;
1407 default:
1408 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1409 return ERR_PTR(-EINVAL);
1410 }
1411
1412 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1413
1414 /* update the QP table */
1415 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1416 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1417 atomic_read(&nesvnic->netdev->refcnt));
1418
1419 return &nesqp->ibqp;
1420 }
1421
1422
1423 /**
1424 * nes_clean_cq
1425 */
1426 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1427 {
1428 u32 cq_head;
1429 u32 lo;
1430 u32 hi;
1431 u64 u64temp;
1432 unsigned long flags = 0;
1433
1434 spin_lock_irqsave(&nescq->lock, flags);
1435
1436 cq_head = nescq->hw_cq.cq_head;
1437 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1438 rmb();
1439 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1440 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1441 u64temp = (((u64)hi) << 32) | ((u64)lo);
1442 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1443 if (u64temp == (u64)(unsigned long)nesqp) {
1444 /* Zero the context value so cqe will be ignored */
1445 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1446 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1447 }
1448
1449 if (++cq_head >= nescq->hw_cq.cq_size)
1450 cq_head = 0;
1451 }
1452
1453 spin_unlock_irqrestore(&nescq->lock, flags);
1454 }
1455
1456
1457 /**
1458 * nes_destroy_qp
1459 */
1460 static int nes_destroy_qp(struct ib_qp *ibqp)
1461 {
1462 struct nes_qp *nesqp = to_nesqp(ibqp);
1463 struct nes_ucontext *nes_ucontext;
1464 struct ib_qp_attr attr;
1465 struct iw_cm_id *cm_id;
1466 struct iw_cm_event cm_event;
1467 int ret;
1468
1469 atomic_inc(&sw_qps_destroyed);
1470 nesqp->destroyed = 1;
1471
1472 /* Blow away the connection if it exists. */
1473 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1474 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1475 attr.qp_state = IB_QPS_ERR;
1476 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1477 }
1478
1479 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1480 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1481 cm_id = nesqp->cm_id;
1482 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1483 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1484 cm_event.local_addr = cm_id->local_addr;
1485 cm_event.remote_addr = cm_id->remote_addr;
1486 cm_event.private_data = NULL;
1487 cm_event.private_data_len = 0;
1488
1489 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1490 "QP%u. cm_id = %p, refcount = %u. \n",
1491 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1492
1493 cm_id->rem_ref(cm_id);
1494 ret = cm_id->event_handler(cm_id, &cm_event);
1495 if (ret)
1496 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1497 }
1498
1499 if (nesqp->user_mode) {
1500 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1501 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1502 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1503 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1504 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1505 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1506 }
1507 }
1508 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1509 nesqp->sq_kmapped = 0;
1510 kunmap(nesqp->page);
1511 }
1512 } else {
1513 /* Clean any pending completions from the cq(s) */
1514 if (nesqp->nesscq)
1515 nes_clean_cq(nesqp, nesqp->nesscq);
1516
1517 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1518 nes_clean_cq(nesqp, nesqp->nesrcq);
1519 }
1520
1521 nes_rem_ref(&nesqp->ibqp);
1522 return 0;
1523 }
1524
1525
1526 /**
1527 * nes_create_cq
1528 */
1529 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1530 int comp_vector,
1531 struct ib_ucontext *context, struct ib_udata *udata)
1532 {
1533 u64 u64temp;
1534 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1535 struct nes_device *nesdev = nesvnic->nesdev;
1536 struct nes_adapter *nesadapter = nesdev->nesadapter;
1537 struct nes_cq *nescq;
1538 struct nes_ucontext *nes_ucontext = NULL;
1539 struct nes_cqp_request *cqp_request;
1540 void *mem = NULL;
1541 struct nes_hw_cqp_wqe *cqp_wqe;
1542 struct nes_pbl *nespbl = NULL;
1543 struct nes_create_cq_req req;
1544 struct nes_create_cq_resp resp;
1545 u32 cq_num = 0;
1546 u32 opcode = 0;
1547 u32 pbl_entries = 1;
1548 int err;
1549 unsigned long flags;
1550 int ret;
1551
1552 if (entries > nesadapter->max_cqe)
1553 return ERR_PTR(-EINVAL);
1554
1555 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1556 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1557 if (err) {
1558 return ERR_PTR(err);
1559 }
1560
1561 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1562 if (!nescq) {
1563 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1564 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1565 return ERR_PTR(-ENOMEM);
1566 }
1567
1568 nescq->hw_cq.cq_size = max(entries + 1, 5);
1569 nescq->hw_cq.cq_number = cq_num;
1570 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1571
1572
1573 if (context) {
1574 nes_ucontext = to_nesucontext(context);
1575 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1576 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1577 kfree(nescq);
1578 return ERR_PTR(-EFAULT);
1579 }
1580 nesvnic->mcrq_ucontext = nes_ucontext;
1581 nes_ucontext->mcrqf = req.mcrqf;
1582 if (nes_ucontext->mcrqf) {
1583 if (nes_ucontext->mcrqf & 0x80000000)
1584 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1585 else if (nes_ucontext->mcrqf & 0x40000000)
1586 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1587 else
1588 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1589 nescq->mcrqf = nes_ucontext->mcrqf;
1590 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1591 }
1592 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1593 (unsigned long)req.user_cq_buffer, entries);
1594 err = 1;
1595 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1596 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1597 list_del(&nespbl->list);
1598 err = 0;
1599 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1600 nespbl);
1601 break;
1602 }
1603 }
1604 if (err) {
1605 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1606 kfree(nescq);
1607 return ERR_PTR(-EFAULT);
1608 }
1609
1610 pbl_entries = nespbl->pbl_size >> 3;
1611 nescq->cq_mem_size = 0;
1612 } else {
1613 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1614 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1615 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1616
1617 /* allocate the physical buffer space */
1618 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1619 &nescq->hw_cq.cq_pbase);
1620 if (!mem) {
1621 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1622 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1623 kfree(nescq);
1624 return ERR_PTR(-ENOMEM);
1625 }
1626
1627 memset(mem, 0, nescq->cq_mem_size);
1628 nescq->hw_cq.cq_vbase = mem;
1629 nescq->hw_cq.cq_head = 0;
1630 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1631 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1632 (u32)nescq->hw_cq.cq_pbase);
1633 }
1634
1635 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1636 spin_lock_init(&nescq->lock);
1637
1638 /* send CreateCQ request to CQP */
1639 cqp_request = nes_get_cqp_request(nesdev);
1640 if (cqp_request == NULL) {
1641 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1642 if (!context)
1643 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1644 nescq->hw_cq.cq_pbase);
1645 else {
1646 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1647 nespbl->pbl_vbase, nespbl->pbl_pbase);
1648 kfree(nespbl);
1649 }
1650
1651 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1652 kfree(nescq);
1653 return ERR_PTR(-ENOMEM);
1654 }
1655 cqp_request->waiting = 1;
1656 cqp_wqe = &cqp_request->cqp_wqe;
1657
1658 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1659 NES_CQP_CQ_CHK_OVERFLOW |
1660 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1661
1662 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1663
1664 if (pbl_entries != 1) {
1665 if (pbl_entries > 32) {
1666 /* use 4k pbl */
1667 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1668 if (nesadapter->free_4kpbl == 0) {
1669 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1670 nes_free_cqp_request(nesdev, cqp_request);
1671 if (!context)
1672 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1673 nescq->hw_cq.cq_pbase);
1674 else {
1675 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1676 nespbl->pbl_vbase, nespbl->pbl_pbase);
1677 kfree(nespbl);
1678 }
1679 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1680 kfree(nescq);
1681 return ERR_PTR(-ENOMEM);
1682 } else {
1683 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1684 nescq->virtual_cq = 2;
1685 nesadapter->free_4kpbl--;
1686 }
1687 } else {
1688 /* use 256 byte pbl */
1689 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1690 if (nesadapter->free_256pbl == 0) {
1691 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1692 nes_free_cqp_request(nesdev, cqp_request);
1693 if (!context)
1694 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1695 nescq->hw_cq.cq_pbase);
1696 else {
1697 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1698 nespbl->pbl_vbase, nespbl->pbl_pbase);
1699 kfree(nespbl);
1700 }
1701 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1702 kfree(nescq);
1703 return ERR_PTR(-ENOMEM);
1704 } else {
1705 opcode |= NES_CQP_CQ_VIRT;
1706 nescq->virtual_cq = 1;
1707 nesadapter->free_256pbl--;
1708 }
1709 }
1710 }
1711
1712 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1713
1714 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1715 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1716 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1717 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1718
1719 if (context) {
1720 if (pbl_entries != 1)
1721 u64temp = (u64)nespbl->pbl_pbase;
1722 else
1723 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1724 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1725 nes_ucontext->mmap_db_index[0]);
1726 } else {
1727 u64temp = (u64)nescq->hw_cq.cq_pbase;
1728 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1729 }
1730 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1731 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1732 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1733 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1734 cpu_to_le32((u32)(u64temp >> 1));
1735 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1736 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1737
1738 atomic_set(&cqp_request->refcount, 2);
1739 nes_post_cqp_request(nesdev, cqp_request);
1740
1741 /* Wait for CQP */
1742 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1743 nescq->hw_cq.cq_number);
1744 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1745 NES_EVENT_TIMEOUT * 2);
1746 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1747 nescq->hw_cq.cq_number, ret);
1748 if ((!ret) || (cqp_request->major_code)) {
1749 nes_put_cqp_request(nesdev, cqp_request);
1750 if (!context)
1751 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1752 nescq->hw_cq.cq_pbase);
1753 else {
1754 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1755 nespbl->pbl_vbase, nespbl->pbl_pbase);
1756 kfree(nespbl);
1757 }
1758 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1759 kfree(nescq);
1760 return ERR_PTR(-EIO);
1761 }
1762 nes_put_cqp_request(nesdev, cqp_request);
1763
1764 if (context) {
1765 /* free the nespbl */
1766 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1767 nespbl->pbl_pbase);
1768 kfree(nespbl);
1769 resp.cq_id = nescq->hw_cq.cq_number;
1770 resp.cq_size = nescq->hw_cq.cq_size;
1771 resp.mmap_db_index = 0;
1772 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1773 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1774 kfree(nescq);
1775 return ERR_PTR(-EFAULT);
1776 }
1777 }
1778
1779 return &nescq->ibcq;
1780 }
1781
1782
1783 /**
1784 * nes_destroy_cq
1785 */
1786 static int nes_destroy_cq(struct ib_cq *ib_cq)
1787 {
1788 struct nes_cq *nescq;
1789 struct nes_device *nesdev;
1790 struct nes_vnic *nesvnic;
1791 struct nes_adapter *nesadapter;
1792 struct nes_hw_cqp_wqe *cqp_wqe;
1793 struct nes_cqp_request *cqp_request;
1794 unsigned long flags;
1795 u32 opcode = 0;
1796 int ret;
1797
1798 if (ib_cq == NULL)
1799 return 0;
1800
1801 nescq = to_nescq(ib_cq);
1802 nesvnic = to_nesvnic(ib_cq->device);
1803 nesdev = nesvnic->nesdev;
1804 nesadapter = nesdev->nesadapter;
1805
1806 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1807
1808 /* Send DestroyCQ request to CQP */
1809 cqp_request = nes_get_cqp_request(nesdev);
1810 if (cqp_request == NULL) {
1811 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1812 return -ENOMEM;
1813 }
1814 cqp_request->waiting = 1;
1815 cqp_wqe = &cqp_request->cqp_wqe;
1816 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1817 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1818 if (nescq->virtual_cq == 1) {
1819 nesadapter->free_256pbl++;
1820 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1821 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1822 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1823 }
1824 } else if (nescq->virtual_cq == 2) {
1825 nesadapter->free_4kpbl++;
1826 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1827 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1828 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1829 }
1830 opcode |= NES_CQP_CQ_4KB_CHUNK;
1831 }
1832
1833 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1834
1835 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1836 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1837 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1838 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1839 if (!nescq->mcrqf)
1840 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1841
1842 atomic_set(&cqp_request->refcount, 2);
1843 nes_post_cqp_request(nesdev, cqp_request);
1844
1845 /* Wait for CQP */
1846 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1847 nescq->hw_cq.cq_number);
1848 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1849 NES_EVENT_TIMEOUT);
1850 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1851 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1852 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1853 cqp_request->minor_code);
1854 if (!ret) {
1855 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1856 nescq->hw_cq.cq_number);
1857 ret = -ETIME;
1858 } else if (cqp_request->major_code) {
1859 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1860 nescq->hw_cq.cq_number);
1861 ret = -EIO;
1862 } else {
1863 ret = 0;
1864 }
1865 nes_put_cqp_request(nesdev, cqp_request);
1866
1867 if (nescq->cq_mem_size)
1868 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1869 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1870 kfree(nescq);
1871
1872 return ret;
1873 }
1874
1875 /**
1876 * root_256
1877 */
1878 static u32 root_256(struct nes_device *nesdev,
1879 struct nes_root_vpbl *root_vpbl,
1880 struct nes_root_vpbl *new_root,
1881 u16 pbl_count_4k)
1882 {
1883 u64 leaf_pbl;
1884 int i, j, k;
1885
1886 if (pbl_count_4k == 1) {
1887 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1888 512, &new_root->pbl_pbase);
1889
1890 if (new_root->pbl_vbase == NULL)
1891 return 0;
1892
1893 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1894 for (i = 0; i < 16; i++) {
1895 new_root->pbl_vbase[i].pa_low =
1896 cpu_to_le32((u32)leaf_pbl);
1897 new_root->pbl_vbase[i].pa_high =
1898 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1899 leaf_pbl += 256;
1900 }
1901 } else {
1902 for (i = 3; i >= 0; i--) {
1903 j = i * 16;
1904 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1905 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1906 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1907 << 32);
1908 for (k = 1; k < 16; k++) {
1909 leaf_pbl += 256;
1910 root_vpbl->pbl_vbase[j + k].pa_low =
1911 cpu_to_le32((u32)leaf_pbl);
1912 root_vpbl->pbl_vbase[j + k].pa_high =
1913 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1914 }
1915 }
1916 }
1917
1918 return 1;
1919 }
1920
1921
1922 /**
1923 * nes_reg_mr
1924 */
1925 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1926 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1927 dma_addr_t single_buffer, u16 pbl_count_4k,
1928 u16 residual_page_count_4k, int acc, u64 *iova_start,
1929 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1930 {
1931 struct nes_hw_cqp_wqe *cqp_wqe;
1932 struct nes_cqp_request *cqp_request;
1933 unsigned long flags;
1934 int ret;
1935 struct nes_adapter *nesadapter = nesdev->nesadapter;
1936 uint pg_cnt = 0;
1937 u16 pbl_count_256 = 0;
1938 u16 pbl_count = 0;
1939 u8 use_256_pbls = 0;
1940 u8 use_4k_pbls = 0;
1941 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1942 struct nes_root_vpbl new_root = {0, 0, 0};
1943 u32 opcode = 0;
1944 u16 major_code;
1945
1946 /* Register the region with the adapter */
1947 cqp_request = nes_get_cqp_request(nesdev);
1948 if (cqp_request == NULL) {
1949 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1950 return -ENOMEM;
1951 }
1952 cqp_request->waiting = 1;
1953 cqp_wqe = &cqp_request->cqp_wqe;
1954
1955 if (pbl_count_4k) {
1956 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1957
1958 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1959 pbl_count_256 = (pg_cnt + 31) / 32;
1960 if (pg_cnt <= 32) {
1961 if (pbl_count_256 <= nesadapter->free_256pbl)
1962 use_256_pbls = 1;
1963 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1964 use_4k_pbls = 1;
1965 } else if (pg_cnt <= 2048) {
1966 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1967 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1968 use_4k_pbls = 1;
1969 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1970 use_256_pbls = 1;
1971 use_two_level = 1;
1972 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1973 use_4k_pbls = 1;
1974 }
1975 } else {
1976 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1977 use_4k_pbls = 1;
1978 }
1979
1980 if (use_256_pbls) {
1981 pbl_count = pbl_count_256;
1982 nesadapter->free_256pbl -= pbl_count + use_two_level;
1983 } else if (use_4k_pbls) {
1984 pbl_count = pbl_count_4k;
1985 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1986 } else {
1987 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1988 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1989 nes_free_cqp_request(nesdev, cqp_request);
1990 return -ENOMEM;
1991 }
1992
1993 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1994 }
1995
1996 if (use_256_pbls && use_two_level) {
1997 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1998 if (new_root.pbl_pbase != 0)
1999 root_vpbl = &new_root;
2000 } else {
2001 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2002 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2003 use_256_pbls = 0;
2004
2005 if (pbl_count_4k == 1)
2006 use_two_level = 0;
2007 pbl_count = pbl_count_4k;
2008
2009 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2010 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2011 use_4k_pbls = 1;
2012 }
2013 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2014
2015 if (use_4k_pbls == 0)
2016 return -ENOMEM;
2017 }
2018 }
2019
2020 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2021 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2022 if (acc & IB_ACCESS_LOCAL_WRITE)
2023 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2024 if (acc & IB_ACCESS_REMOTE_WRITE)
2025 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2026 if (acc & IB_ACCESS_REMOTE_READ)
2027 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2028 if (acc & IB_ACCESS_MW_BIND)
2029 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2030
2031 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2032 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2033 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2034 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2035
2036 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2037 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2038 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2039 cpu_to_le32(nespd->pd_id & 0x00007fff);
2040 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2041
2042 if (pbl_count == 0) {
2043 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2044 } else {
2045 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2046 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2047 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2048
2049 if (use_4k_pbls)
2050 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2051 }
2052 barrier();
2053
2054 atomic_set(&cqp_request->refcount, 2);
2055 nes_post_cqp_request(nesdev, cqp_request);
2056
2057 /* Wait for CQP */
2058 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2059 NES_EVENT_TIMEOUT);
2060 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2061 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2062 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2063 major_code = cqp_request->major_code;
2064 nes_put_cqp_request(nesdev, cqp_request);
2065
2066 if ((!ret || major_code) && pbl_count != 0) {
2067 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2068 if (use_256_pbls)
2069 nesadapter->free_256pbl += pbl_count + use_two_level;
2070 else if (use_4k_pbls)
2071 nesadapter->free_4kpbl += pbl_count + use_two_level;
2072 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2073 }
2074 if (new_root.pbl_pbase)
2075 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2076 new_root.pbl_pbase);
2077
2078 if (!ret)
2079 return -ETIME;
2080 else if (major_code)
2081 return -EIO;
2082
2083 *actual_pbl_cnt = pbl_count + use_two_level;
2084 *used_4k_pbls = use_4k_pbls;
2085 return 0;
2086 }
2087
2088
2089 /**
2090 * nes_reg_phys_mr
2091 */
2092 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2093 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2094 u64 * iova_start)
2095 {
2096 u64 region_length;
2097 struct nes_pd *nespd = to_nespd(ib_pd);
2098 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2099 struct nes_device *nesdev = nesvnic->nesdev;
2100 struct nes_adapter *nesadapter = nesdev->nesadapter;
2101 struct nes_mr *nesmr;
2102 struct ib_mr *ibmr;
2103 struct nes_vpbl vpbl;
2104 struct nes_root_vpbl root_vpbl;
2105 u32 stag;
2106 u32 i;
2107 unsigned long mask;
2108 u32 stag_index = 0;
2109 u32 next_stag_index = 0;
2110 u32 driver_key = 0;
2111 u32 root_pbl_index = 0;
2112 u32 cur_pbl_index = 0;
2113 int err = 0, pbl_depth = 0;
2114 int ret = 0;
2115 u16 pbl_count = 0;
2116 u8 single_page = 1;
2117 u8 stag_key = 0;
2118
2119 pbl_depth = 0;
2120 region_length = 0;
2121 vpbl.pbl_vbase = NULL;
2122 root_vpbl.pbl_vbase = NULL;
2123 root_vpbl.pbl_pbase = 0;
2124
2125 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2126 stag_key = (u8)next_stag_index;
2127
2128 driver_key = 0;
2129
2130 next_stag_index >>= 8;
2131 next_stag_index %= nesadapter->max_mr;
2132 if (num_phys_buf > (1024*512)) {
2133 return ERR_PTR(-E2BIG);
2134 }
2135
2136 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2137 return ERR_PTR(-EINVAL);
2138
2139 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2140 &stag_index, &next_stag_index);
2141 if (err) {
2142 return ERR_PTR(err);
2143 }
2144
2145 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2146 if (!nesmr) {
2147 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2148 return ERR_PTR(-ENOMEM);
2149 }
2150
2151 for (i = 0; i < num_phys_buf; i++) {
2152
2153 if ((i & 0x01FF) == 0) {
2154 if (root_pbl_index == 1) {
2155 /* Allocate the root PBL */
2156 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2157 &root_vpbl.pbl_pbase);
2158 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2159 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2160 if (!root_vpbl.pbl_vbase) {
2161 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2162 vpbl.pbl_pbase);
2163 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2164 kfree(nesmr);
2165 return ERR_PTR(-ENOMEM);
2166 }
2167 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2168 if (!root_vpbl.leaf_vpbl) {
2169 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2170 root_vpbl.pbl_pbase);
2171 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2172 vpbl.pbl_pbase);
2173 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2174 kfree(nesmr);
2175 return ERR_PTR(-ENOMEM);
2176 }
2177 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2178 root_vpbl.pbl_vbase[0].pa_high =
2179 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2180 root_vpbl.leaf_vpbl[0] = vpbl;
2181 }
2182 /* Allocate a 4K buffer for the PBL */
2183 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2184 &vpbl.pbl_pbase);
2185 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2186 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2187 if (!vpbl.pbl_vbase) {
2188 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2189 ibmr = ERR_PTR(-ENOMEM);
2190 kfree(nesmr);
2191 goto reg_phys_err;
2192 }
2193 /* Fill in the root table */
2194 if (1 <= root_pbl_index) {
2195 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2196 cpu_to_le32((u32)vpbl.pbl_pbase);
2197 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2198 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2199 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2200 }
2201 root_pbl_index++;
2202 cur_pbl_index = 0;
2203 }
2204
2205 mask = !buffer_list[i].size;
2206 if (i != 0)
2207 mask |= buffer_list[i].addr;
2208 if (i != num_phys_buf - 1)
2209 mask |= buffer_list[i].addr + buffer_list[i].size;
2210
2211 if (mask & ~PAGE_MASK) {
2212 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2213 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2214 ibmr = ERR_PTR(-EINVAL);
2215 kfree(nesmr);
2216 goto reg_phys_err;
2217 }
2218
2219 region_length += buffer_list[i].size;
2220 if ((i != 0) && (single_page)) {
2221 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2222 single_page = 0;
2223 }
2224 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2225 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2226 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2227 }
2228
2229 stag = stag_index << 8;
2230 stag |= driver_key;
2231 stag += (u32)stag_key;
2232
2233 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2234 " length = 0x%016lX, index = 0x%08X\n",
2235 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2236
2237 /* Make the leaf PBL the root if only one PBL */
2238 if (root_pbl_index == 1) {
2239 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2240 }
2241
2242 if (single_page) {
2243 pbl_count = 0;
2244 } else {
2245 pbl_count = root_pbl_index;
2246 }
2247 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2248 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2249 &nesmr->pbls_used, &nesmr->pbl_4k);
2250
2251 if (ret == 0) {
2252 nesmr->ibmr.rkey = stag;
2253 nesmr->ibmr.lkey = stag;
2254 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2255 ibmr = &nesmr->ibmr;
2256 } else {
2257 kfree(nesmr);
2258 ibmr = ERR_PTR(-ENOMEM);
2259 }
2260
2261 reg_phys_err:
2262 /* free the resources */
2263 if (root_pbl_index == 1) {
2264 /* single PBL case */
2265 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2266 } else {
2267 for (i=0; i<root_pbl_index; i++) {
2268 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2269 root_vpbl.leaf_vpbl[i].pbl_pbase);
2270 }
2271 kfree(root_vpbl.leaf_vpbl);
2272 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2273 root_vpbl.pbl_pbase);
2274 }
2275
2276 return ibmr;
2277 }
2278
2279
2280 /**
2281 * nes_get_dma_mr
2282 */
2283 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2284 {
2285 struct ib_phys_buf bl;
2286 u64 kva = 0;
2287
2288 nes_debug(NES_DBG_MR, "\n");
2289
2290 bl.size = (u64)0xffffffffffULL;
2291 bl.addr = 0;
2292 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2293 }
2294
2295
2296 /**
2297 * nes_reg_user_mr
2298 */
2299 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2300 u64 virt, int acc, struct ib_udata *udata)
2301 {
2302 u64 iova_start;
2303 __le64 *pbl;
2304 u64 region_length;
2305 dma_addr_t last_dma_addr = 0;
2306 dma_addr_t first_dma_addr = 0;
2307 struct nes_pd *nespd = to_nespd(pd);
2308 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2309 struct nes_device *nesdev = nesvnic->nesdev;
2310 struct nes_adapter *nesadapter = nesdev->nesadapter;
2311 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2312 struct ib_umem_chunk *chunk;
2313 struct nes_ucontext *nes_ucontext;
2314 struct nes_pbl *nespbl;
2315 struct nes_mr *nesmr;
2316 struct ib_umem *region;
2317 struct nes_mem_reg_req req;
2318 struct nes_vpbl vpbl;
2319 struct nes_root_vpbl root_vpbl;
2320 int nmap_index, page_index;
2321 int page_count = 0;
2322 int err, pbl_depth = 0;
2323 int chunk_pages;
2324 int ret;
2325 u32 stag;
2326 u32 stag_index = 0;
2327 u32 next_stag_index;
2328 u32 driver_key;
2329 u32 root_pbl_index = 0;
2330 u32 cur_pbl_index = 0;
2331 u32 skip_pages;
2332 u16 pbl_count;
2333 u8 single_page = 1;
2334 u8 stag_key;
2335
2336 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2337 if (IS_ERR(region)) {
2338 return (struct ib_mr *)region;
2339 }
2340
2341 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2342 " offset = %u, page size = %u.\n",
2343 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2344 region->offset, region->page_size);
2345
2346 skip_pages = ((u32)region->offset) >> 12;
2347
2348 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2349 return ERR_PTR(-EFAULT);
2350 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2351
2352 switch (req.reg_type) {
2353 case IWNES_MEMREG_TYPE_MEM:
2354 pbl_depth = 0;
2355 region_length = 0;
2356 vpbl.pbl_vbase = NULL;
2357 root_vpbl.pbl_vbase = NULL;
2358 root_vpbl.pbl_pbase = 0;
2359
2360 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2361 stag_key = (u8)next_stag_index;
2362
2363 driver_key = next_stag_index & 0x70000000;
2364
2365 next_stag_index >>= 8;
2366 next_stag_index %= nesadapter->max_mr;
2367
2368 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2369 nesadapter->max_mr, &stag_index, &next_stag_index);
2370 if (err) {
2371 ib_umem_release(region);
2372 return ERR_PTR(err);
2373 }
2374
2375 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2376 if (!nesmr) {
2377 ib_umem_release(region);
2378 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2379 return ERR_PTR(-ENOMEM);
2380 }
2381 nesmr->region = region;
2382
2383 list_for_each_entry(chunk, &region->chunk_list, list) {
2384 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2385 chunk->nents, chunk->nmap);
2386 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2387 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2388 ib_umem_release(region);
2389 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2390 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2391 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2392 ibmr = ERR_PTR(-EINVAL);
2393 kfree(nesmr);
2394 goto reg_user_mr_err;
2395 }
2396
2397 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2398 ib_umem_release(region);
2399 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2400 stag_index);
2401 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2402 ibmr = ERR_PTR(-EINVAL);
2403 kfree(nesmr);
2404 goto reg_user_mr_err;
2405 }
2406
2407 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2408 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2409 region_length -= skip_pages << 12;
2410 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2411 skip_pages = 0;
2412 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2413 goto enough_pages;
2414 if ((page_count&0x01FF) == 0) {
2415 if (page_count >= 1024 * 512) {
2416 ib_umem_release(region);
2417 nes_free_resource(nesadapter,
2418 nesadapter->allocated_mrs, stag_index);
2419 kfree(nesmr);
2420 ibmr = ERR_PTR(-E2BIG);
2421 goto reg_user_mr_err;
2422 }
2423 if (root_pbl_index == 1) {
2424 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2425 8192, &root_vpbl.pbl_pbase);
2426 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2427 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2428 if (!root_vpbl.pbl_vbase) {
2429 ib_umem_release(region);
2430 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2431 vpbl.pbl_pbase);
2432 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2433 stag_index);
2434 kfree(nesmr);
2435 ibmr = ERR_PTR(-ENOMEM);
2436 goto reg_user_mr_err;
2437 }
2438 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2439 GFP_KERNEL);
2440 if (!root_vpbl.leaf_vpbl) {
2441 ib_umem_release(region);
2442 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2443 root_vpbl.pbl_pbase);
2444 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2445 vpbl.pbl_pbase);
2446 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2447 stag_index);
2448 kfree(nesmr);
2449 ibmr = ERR_PTR(-ENOMEM);
2450 goto reg_user_mr_err;
2451 }
2452 root_vpbl.pbl_vbase[0].pa_low =
2453 cpu_to_le32((u32)vpbl.pbl_pbase);
2454 root_vpbl.pbl_vbase[0].pa_high =
2455 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2456 root_vpbl.leaf_vpbl[0] = vpbl;
2457 }
2458 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2459 &vpbl.pbl_pbase);
2460 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2461 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2462 if (!vpbl.pbl_vbase) {
2463 ib_umem_release(region);
2464 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2465 ibmr = ERR_PTR(-ENOMEM);
2466 kfree(nesmr);
2467 goto reg_user_mr_err;
2468 }
2469 if (1 <= root_pbl_index) {
2470 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2471 cpu_to_le32((u32)vpbl.pbl_pbase);
2472 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2473 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2474 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2475 }
2476 root_pbl_index++;
2477 cur_pbl_index = 0;
2478 }
2479 if (single_page) {
2480 if (page_count != 0) {
2481 if ((last_dma_addr+4096) !=
2482 (sg_dma_address(&chunk->page_list[nmap_index])+
2483 (page_index*4096)))
2484 single_page = 0;
2485 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2486 (page_index*4096);
2487 } else {
2488 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2489 (page_index*4096);
2490 last_dma_addr = first_dma_addr;
2491 }
2492 }
2493
2494 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2495 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2496 (page_index*4096)));
2497 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2498 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2499 (page_index*4096))) >> 32)));
2500 cur_pbl_index++;
2501 page_count++;
2502 }
2503 }
2504 }
2505 enough_pages:
2506 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2507 " stag_key=0x%08x\n",
2508 stag_index, driver_key, stag_key);
2509 stag = stag_index << 8;
2510 stag |= driver_key;
2511 stag += (u32)stag_key;
2512
2513 iova_start = virt;
2514 /* Make the leaf PBL the root if only one PBL */
2515 if (root_pbl_index == 1) {
2516 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2517 }
2518
2519 if (single_page) {
2520 pbl_count = 0;
2521 } else {
2522 pbl_count = root_pbl_index;
2523 first_dma_addr = 0;
2524 }
2525 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2526 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2527 stag, (unsigned int)iova_start,
2528 (unsigned int)region_length, stag_index,
2529 (unsigned long long)region->length, pbl_count);
2530 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2531 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2532 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2533
2534 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2535
2536 if (ret == 0) {
2537 nesmr->ibmr.rkey = stag;
2538 nesmr->ibmr.lkey = stag;
2539 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2540 ibmr = &nesmr->ibmr;
2541 } else {
2542 ib_umem_release(region);
2543 kfree(nesmr);
2544 ibmr = ERR_PTR(-ENOMEM);
2545 }
2546
2547 reg_user_mr_err:
2548 /* free the resources */
2549 if (root_pbl_index == 1) {
2550 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2551 vpbl.pbl_pbase);
2552 } else {
2553 for (page_index=0; page_index<root_pbl_index; page_index++) {
2554 pci_free_consistent(nesdev->pcidev, 4096,
2555 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2556 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2557 }
2558 kfree(root_vpbl.leaf_vpbl);
2559 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2560 root_vpbl.pbl_pbase);
2561 }
2562
2563 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2564
2565 return ibmr;
2566 case IWNES_MEMREG_TYPE_QP:
2567 case IWNES_MEMREG_TYPE_CQ:
2568 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2569 if (!nespbl) {
2570 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2571 ib_umem_release(region);
2572 return ERR_PTR(-ENOMEM);
2573 }
2574 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2575 if (!nesmr) {
2576 ib_umem_release(region);
2577 kfree(nespbl);
2578 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2579 return ERR_PTR(-ENOMEM);
2580 }
2581 nesmr->region = region;
2582 nes_ucontext = to_nesucontext(pd->uobject->context);
2583 pbl_depth = region->length >> 12;
2584 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2585 nespbl->pbl_size = pbl_depth*sizeof(u64);
2586 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2587 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2588 } else {
2589 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2590 }
2591
2592 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2593 nespbl->pbl_size, pbl_depth);
2594 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2595 &nespbl->pbl_pbase);
2596 if (!pbl) {
2597 ib_umem_release(region);
2598 kfree(nesmr);
2599 kfree(nespbl);
2600 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2601 return ERR_PTR(-ENOMEM);
2602 }
2603
2604 nespbl->pbl_vbase = (u64 *)pbl;
2605 nespbl->user_base = start;
2606 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2607 " pbl_vbase=%p user_base=0x%lx\n",
2608 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2609 (void *) nespbl->pbl_vbase, nespbl->user_base);
2610
2611 list_for_each_entry(chunk, &region->chunk_list, list) {
2612 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2613 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2614 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2615 nespbl->page = sg_page(&chunk->page_list[0]);
2616 for (page_index=0; page_index<chunk_pages; page_index++) {
2617 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2618 (sg_dma_address(&chunk->page_list[nmap_index])+
2619 (page_index*4096)));
2620 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2621 (sg_dma_address(&chunk->page_list[nmap_index])+
2622 (page_index*4096)))>>32);
2623 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2624 (unsigned long long)*pbl,
2625 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2626 pbl++;
2627 }
2628 }
2629 }
2630 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2631 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2632 } else {
2633 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2634 }
2635 nesmr->ibmr.rkey = -1;
2636 nesmr->ibmr.lkey = -1;
2637 nesmr->mode = req.reg_type;
2638 return &nesmr->ibmr;
2639 }
2640
2641 return ERR_PTR(-ENOSYS);
2642 }
2643
2644
2645 /**
2646 * nes_dereg_mr
2647 */
2648 static int nes_dereg_mr(struct ib_mr *ib_mr)
2649 {
2650 struct nes_mr *nesmr = to_nesmr(ib_mr);
2651 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2652 struct nes_device *nesdev = nesvnic->nesdev;
2653 struct nes_adapter *nesadapter = nesdev->nesadapter;
2654 struct nes_hw_cqp_wqe *cqp_wqe;
2655 struct nes_cqp_request *cqp_request;
2656 unsigned long flags;
2657 int ret;
2658 u16 major_code;
2659 u16 minor_code;
2660
2661 if (nesmr->region) {
2662 ib_umem_release(nesmr->region);
2663 }
2664 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2665 kfree(nesmr);
2666 return 0;
2667 }
2668
2669 /* Deallocate the region with the adapter */
2670
2671 cqp_request = nes_get_cqp_request(nesdev);
2672 if (cqp_request == NULL) {
2673 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2674 return -ENOMEM;
2675 }
2676 cqp_request->waiting = 1;
2677 cqp_wqe = &cqp_request->cqp_wqe;
2678
2679 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2680 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2681 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2682 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2683 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2684
2685 atomic_set(&cqp_request->refcount, 2);
2686 nes_post_cqp_request(nesdev, cqp_request);
2687
2688 /* Wait for CQP */
2689 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2690 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2691 NES_EVENT_TIMEOUT);
2692 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2693 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2694 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2695
2696 major_code = cqp_request->major_code;
2697 minor_code = cqp_request->minor_code;
2698
2699 nes_put_cqp_request(nesdev, cqp_request);
2700
2701 if (!ret) {
2702 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2703 " ib_mr=%p, rkey = 0x%08X\n",
2704 ib_mr, ib_mr->rkey);
2705 return -ETIME;
2706 } else if (major_code) {
2707 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2708 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2709 major_code, minor_code, ib_mr, ib_mr->rkey);
2710 return -EIO;
2711 }
2712
2713 if (nesmr->pbls_used != 0) {
2714 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2715 if (nesmr->pbl_4k) {
2716 nesadapter->free_4kpbl += nesmr->pbls_used;
2717 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2718 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2719 "exceeded the max(%u)\n",
2720 nesadapter->free_4kpbl,
2721 nesadapter->max_4kpbl);
2722 } else {
2723 nesadapter->free_256pbl += nesmr->pbls_used;
2724 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2725 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2726 "exceeded the max(%u)\n",
2727 nesadapter->free_256pbl,
2728 nesadapter->max_256pbl);
2729 }
2730 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2731 }
2732 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2733 (ib_mr->rkey & 0x0fffff00) >> 8);
2734
2735 kfree(nesmr);
2736
2737 return 0;
2738 }
2739
2740
2741 /**
2742 * show_rev
2743 */
2744 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2745 char *buf)
2746 {
2747 struct nes_ib_device *nesibdev =
2748 container_of(dev, struct nes_ib_device, ibdev.dev);
2749 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2750
2751 nes_debug(NES_DBG_INIT, "\n");
2752 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2753 }
2754
2755
2756 /**
2757 * show_fw_ver
2758 */
2759 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2760 char *buf)
2761 {
2762 struct nes_ib_device *nesibdev =
2763 container_of(dev, struct nes_ib_device, ibdev.dev);
2764 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2765
2766 nes_debug(NES_DBG_INIT, "\n");
2767 return sprintf(buf, "%u.%u\n",
2768 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2769 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2770 }
2771
2772
2773 /**
2774 * show_hca
2775 */
2776 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2777 char *buf)
2778 {
2779 nes_debug(NES_DBG_INIT, "\n");
2780 return sprintf(buf, "NES020\n");
2781 }
2782
2783
2784 /**
2785 * show_board
2786 */
2787 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2788 char *buf)
2789 {
2790 nes_debug(NES_DBG_INIT, "\n");
2791 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2792 }
2793
2794
2795 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2796 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2797 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2798 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2799
2800 static struct device_attribute *nes_dev_attributes[] = {
2801 &dev_attr_hw_rev,
2802 &dev_attr_fw_ver,
2803 &dev_attr_hca_type,
2804 &dev_attr_board_id
2805 };
2806
2807
2808 /**
2809 * nes_query_qp
2810 */
2811 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2812 int attr_mask, struct ib_qp_init_attr *init_attr)
2813 {
2814 struct nes_qp *nesqp = to_nesqp(ibqp);
2815
2816 nes_debug(NES_DBG_QP, "\n");
2817
2818 attr->qp_access_flags = 0;
2819 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2820 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2821 attr->cap.max_recv_sge = 1;
2822 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2823 init_attr->cap.max_inline_data = 0;
2824 } else {
2825 init_attr->cap.max_inline_data = 64;
2826 }
2827
2828 init_attr->event_handler = nesqp->ibqp.event_handler;
2829 init_attr->qp_context = nesqp->ibqp.qp_context;
2830 init_attr->send_cq = nesqp->ibqp.send_cq;
2831 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2832 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2833 init_attr->cap = attr->cap;
2834
2835 return 0;
2836 }
2837
2838
2839 /**
2840 * nes_hw_modify_qp
2841 */
2842 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2843 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2844 {
2845 struct nes_hw_cqp_wqe *cqp_wqe;
2846 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2847 /* struct iw_cm_event cm_event; */
2848 struct nes_cqp_request *cqp_request;
2849 int ret;
2850 u16 major_code;
2851
2852 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2853 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2854
2855 cqp_request = nes_get_cqp_request(nesdev);
2856 if (cqp_request == NULL) {
2857 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2858 return -ENOMEM;
2859 }
2860 if (wait_completion) {
2861 cqp_request->waiting = 1;
2862 } else {
2863 cqp_request->waiting = 0;
2864 }
2865 cqp_wqe = &cqp_request->cqp_wqe;
2866
2867 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2868 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2869 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2870 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2871 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2872 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2873 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2874
2875 /* If sending a terminate message, fill in the length (in words) */
2876 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2877 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2878 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2879 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2880 }
2881
2882 atomic_set(&cqp_request->refcount, 2);
2883 nes_post_cqp_request(nesdev, cqp_request);
2884
2885 /* Wait for CQP */
2886 if (wait_completion) {
2887 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2888 nesqp->hwqp.qp_id); */
2889 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2890 NES_EVENT_TIMEOUT);
2891 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2892 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2893 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2894 major_code = cqp_request->major_code;
2895 if (major_code) {
2896 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2897 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2898 nesqp->hwqp.qp_id, cqp_request->major_code,
2899 cqp_request->minor_code, next_iwarp_state);
2900 }
2901
2902 nes_put_cqp_request(nesdev, cqp_request);
2903
2904 if (!ret)
2905 return -ETIME;
2906 else if (major_code)
2907 return -EIO;
2908 else
2909 return 0;
2910 } else {
2911 return 0;
2912 }
2913 }
2914
2915
2916 /**
2917 * nes_modify_qp
2918 */
2919 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2920 int attr_mask, struct ib_udata *udata)
2921 {
2922 struct nes_qp *nesqp = to_nesqp(ibqp);
2923 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2924 struct nes_device *nesdev = nesvnic->nesdev;
2925 /* u32 cqp_head; */
2926 /* u32 counter; */
2927 u32 next_iwarp_state = 0;
2928 int err;
2929 unsigned long qplockflags;
2930 int ret;
2931 u16 original_last_aeq;
2932 u8 issue_modify_qp = 0;
2933 u8 issue_disconnect = 0;
2934 u8 dont_wait = 0;
2935
2936 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2937 " iwarp_state=0x%X, refcount=%d\n",
2938 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2939 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2940
2941 spin_lock_irqsave(&nesqp->lock, qplockflags);
2942
2943 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2944 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2945 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2946 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2947
2948 if (attr_mask & IB_QP_STATE) {
2949 switch (attr->qp_state) {
2950 case IB_QPS_INIT:
2951 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2952 nesqp->hwqp.qp_id);
2953 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2954 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2955 return -EINVAL;
2956 }
2957 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2958 issue_modify_qp = 1;
2959 break;
2960 case IB_QPS_RTR:
2961 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2962 nesqp->hwqp.qp_id);
2963 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2964 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2965 return -EINVAL;
2966 }
2967 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2968 issue_modify_qp = 1;
2969 break;
2970 case IB_QPS_RTS:
2971 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2972 nesqp->hwqp.qp_id);
2973 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2974 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2975 return -EINVAL;
2976 }
2977 if (nesqp->cm_id == NULL) {
2978 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2979 nesqp->hwqp.qp_id );
2980 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2981 return -EINVAL;
2982 }
2983 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2984 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2985 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2986 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2987 issue_modify_qp = 1;
2988 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2989 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2990 nesqp->hte_added = 1;
2991 break;
2992 case IB_QPS_SQD:
2993 issue_modify_qp = 1;
2994 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2995 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2996 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2997 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2998 return 0;
2999 } else {
3000 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3001 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3002 " ignored due to current iWARP state\n",
3003 nesqp->hwqp.qp_id);
3004 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3005 return -EINVAL;
3006 }
3007 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3008 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3009 " already done based on hw state.\n",
3010 nesqp->hwqp.qp_id);
3011 issue_modify_qp = 0;
3012 }
3013 switch (nesqp->hw_iwarp_state) {
3014 case NES_AEQE_IWARP_STATE_CLOSING:
3015 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3016 case NES_AEQE_IWARP_STATE_TERMINATE:
3017 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3018 break;
3019 case NES_AEQE_IWARP_STATE_ERROR:
3020 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3021 break;
3022 default:
3023 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3024 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3025 break;
3026 }
3027 }
3028 break;
3029 case IB_QPS_SQE:
3030 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3031 nesqp->hwqp.qp_id);
3032 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3033 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3034 return -EINVAL;
3035 }
3036 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3037 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3038 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3039 issue_modify_qp = 1;
3040 break;
3041 case IB_QPS_ERR:
3042 case IB_QPS_RESET:
3043 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3044 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3045 return -EINVAL;
3046 }
3047 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3048 nesqp->hwqp.qp_id);
3049 if (nesqp->term_flags)
3050 del_timer(&nesqp->terminate_timer);
3051
3052 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3053 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3054 if (nesqp->hte_added) {
3055 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3056 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3057 nesqp->hte_added = 0;
3058 }
3059 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3060 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3061 next_iwarp_state |= NES_CQP_QP_RESET;
3062 } else {
3063 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3064 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3065 dont_wait = 1;
3066 }
3067 issue_modify_qp = 1;
3068 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3069 break;
3070 default:
3071 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3072 return -EINVAL;
3073 break;
3074 }
3075
3076 nesqp->ibqp_state = attr->qp_state;
3077 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3078 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3079 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3080 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3081 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3082 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3083 nesqp->iwarp_state);
3084 issue_disconnect = 1;
3085 } else {
3086 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3087 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3088 nesqp->iwarp_state);
3089 }
3090 }
3091
3092 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3093 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3094 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3095 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3096 issue_modify_qp = 1;
3097 }
3098 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3099 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3100 issue_modify_qp = 1;
3101 }
3102 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3103 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3104 issue_modify_qp = 1;
3105 }
3106 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3107 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3108 issue_modify_qp = 1;
3109 }
3110
3111 if (nesqp->user_mode) {
3112 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3113 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3114 issue_modify_qp = 1;
3115 }
3116 }
3117
3118 original_last_aeq = nesqp->last_aeq;
3119 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3120
3121 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3122
3123 ret = 0;
3124
3125
3126 if (issue_modify_qp) {
3127 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3128 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3129 if (ret)
3130 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3131 " failed for QP%u.\n",
3132 next_iwarp_state, nesqp->hwqp.qp_id);
3133
3134 }
3135
3136 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3137 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP 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 if ((!ret) ||
3142 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3143 (ret))) {
3144 if (dont_wait) {
3145 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3146 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3147 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3148 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3149 original_last_aeq, nesqp->last_aeq);
3150 /* this one is for the cm_disconnect thread */
3151 spin_lock_irqsave(&nesqp->lock, qplockflags);
3152 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3153 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3154 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3155 nes_cm_disconn(nesqp);
3156 } else {
3157 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3158 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3159 }
3160 } else {
3161 spin_lock_irqsave(&nesqp->lock, qplockflags);
3162 if (nesqp->cm_id) {
3163 /* These two are for the timer thread */
3164 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3165 nesqp->cm_id->add_ref(nesqp->cm_id);
3166 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3167 " need ae to finish up, original_last_aeq = 0x%04X."
3168 " last_aeq = 0x%04X, scheduling timer.\n",
3169 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3170 original_last_aeq, nesqp->last_aeq);
3171 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3172 }
3173 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3174 } else {
3175 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3176 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3177 " need ae to finish up, original_last_aeq = 0x%04X."
3178 " last_aeq = 0x%04X.\n",
3179 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3180 original_last_aeq, nesqp->last_aeq);
3181 }
3182 }
3183 } else {
3184 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3185 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3186 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3187 original_last_aeq, nesqp->last_aeq);
3188 }
3189 } else {
3190 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3191 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3192 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3193 original_last_aeq, nesqp->last_aeq);
3194 }
3195
3196 err = 0;
3197
3198 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3199 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3200
3201 return err;
3202 }
3203
3204
3205 /**
3206 * nes_muticast_attach
3207 */
3208 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3209 {
3210 nes_debug(NES_DBG_INIT, "\n");
3211 return -ENOSYS;
3212 }
3213
3214
3215 /**
3216 * nes_multicast_detach
3217 */
3218 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3219 {
3220 nes_debug(NES_DBG_INIT, "\n");
3221 return -ENOSYS;
3222 }
3223
3224
3225 /**
3226 * nes_process_mad
3227 */
3228 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3229 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3230 struct ib_mad *in_mad, struct ib_mad *out_mad)
3231 {
3232 nes_debug(NES_DBG_INIT, "\n");
3233 return -ENOSYS;
3234 }
3235
3236 static inline void
3237 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3238 {
3239 int sge_index;
3240 int total_payload_length = 0;
3241 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3242 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3243 ib_wr->sg_list[sge_index].addr);
3244 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3245 ib_wr->sg_list[sge_index].length);
3246 if (uselkey)
3247 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3248 (ib_wr->sg_list[sge_index].lkey));
3249 else
3250 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3251
3252 total_payload_length += ib_wr->sg_list[sge_index].length;
3253 }
3254 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3255 total_payload_length);
3256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3257 total_payload_length);
3258 }
3259
3260 /**
3261 * nes_post_send
3262 */
3263 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3264 struct ib_send_wr **bad_wr)
3265 {
3266 u64 u64temp;
3267 unsigned long flags = 0;
3268 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3269 struct nes_device *nesdev = nesvnic->nesdev;
3270 struct nes_qp *nesqp = to_nesqp(ibqp);
3271 struct nes_hw_qp_wqe *wqe;
3272 int err = 0;
3273 u32 qsize = nesqp->hwqp.sq_size;
3274 u32 head;
3275 u32 wqe_misc = 0;
3276 u32 wqe_count = 0;
3277 u32 counter;
3278
3279 if (nesqp->ibqp_state > IB_QPS_RTS) {
3280 err = -EINVAL;
3281 goto out;
3282 }
3283
3284 spin_lock_irqsave(&nesqp->lock, flags);
3285
3286 head = nesqp->hwqp.sq_head;
3287
3288 while (ib_wr) {
3289 /* Check for QP error */
3290 if (nesqp->term_flags) {
3291 err = -EINVAL;
3292 break;
3293 }
3294
3295 /* Check for SQ overflow */
3296 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3297 err = -ENOMEM;
3298 break;
3299 }
3300
3301 wqe = &nesqp->hwqp.sq_vbase[head];
3302 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3303 nesqp->hwqp.qp_id, wqe, head); */
3304 nes_fill_init_qp_wqe(wqe, nesqp, head);
3305 u64temp = (u64)(ib_wr->wr_id);
3306 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3307 u64temp);
3308 switch (ib_wr->opcode) {
3309 case IB_WR_SEND:
3310 case IB_WR_SEND_WITH_INV:
3311 if (IB_WR_SEND == ib_wr->opcode) {
3312 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3313 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3314 else
3315 wqe_misc = NES_IWARP_SQ_OP_SEND;
3316 } else {
3317 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3318 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3319 else
3320 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3321
3322 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3323 ib_wr->ex.invalidate_rkey);
3324 }
3325
3326 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3327 err = -EINVAL;
3328 break;
3329 }
3330
3331 if (ib_wr->send_flags & IB_SEND_FENCE)
3332 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3333
3334 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3335 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3336 (ib_wr->sg_list[0].length <= 64)) {
3337 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3338 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3339 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3340 ib_wr->sg_list[0].length);
3341 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3342 } else {
3343 fill_wqe_sg_send(wqe, ib_wr, 1);
3344 }
3345
3346 break;
3347 case IB_WR_RDMA_WRITE:
3348 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3349 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3350 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3351 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3352 err = -EINVAL;
3353 break;
3354 }
3355
3356 if (ib_wr->send_flags & IB_SEND_FENCE)
3357 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3358
3359 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3360 ib_wr->wr.rdma.rkey);
3361 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3362 ib_wr->wr.rdma.remote_addr);
3363
3364 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3365 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3366 (ib_wr->sg_list[0].length <= 64)) {
3367 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3368 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3369 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3370 ib_wr->sg_list[0].length);
3371 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3372 } else {
3373 fill_wqe_sg_send(wqe, ib_wr, 1);
3374 }
3375
3376 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3377 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3378 break;
3379 case IB_WR_RDMA_READ:
3380 case IB_WR_RDMA_READ_WITH_INV:
3381 /* iWARP only supports 1 sge for RDMA reads */
3382 if (ib_wr->num_sge > 1) {
3383 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3384 ib_wr->num_sge);
3385 err = -EINVAL;
3386 break;
3387 }
3388 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3389 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3390 } else {
3391 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3392 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3393 ib_wr->ex.invalidate_rkey);
3394 }
3395
3396 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3397 ib_wr->wr.rdma.remote_addr);
3398 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3399 ib_wr->wr.rdma.rkey);
3400 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3401 ib_wr->sg_list->length);
3402 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3403 ib_wr->sg_list->addr);
3404 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3405 ib_wr->sg_list->lkey);
3406 break;
3407 case IB_WR_LOCAL_INV:
3408 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3409 set_wqe_32bit_value(wqe->wqe_words,
3410 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3411 ib_wr->ex.invalidate_rkey);
3412 break;
3413 case IB_WR_FAST_REG_MR:
3414 {
3415 int i;
3416 int flags = ib_wr->wr.fast_reg.access_flags;
3417 struct nes_ib_fast_reg_page_list *pnesfrpl =
3418 container_of(ib_wr->wr.fast_reg.page_list,
3419 struct nes_ib_fast_reg_page_list,
3420 ibfrpl);
3421 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3422 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3423
3424 if (ib_wr->wr.fast_reg.page_list_len >
3425 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3426 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3427 err = -EINVAL;
3428 break;
3429 }
3430 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3431 set_wqe_64bit_value(wqe->wqe_words,
3432 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3433 ib_wr->wr.fast_reg.iova_start);
3434 set_wqe_32bit_value(wqe->wqe_words,
3435 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3436 ib_wr->wr.fast_reg.length);
3437 set_wqe_32bit_value(wqe->wqe_words,
3438 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3439 ib_wr->wr.fast_reg.rkey);
3440 /* Set page size: */
3441 if (ib_wr->wr.fast_reg.page_shift == 12) {
3442 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3443 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3444 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3445 } else {
3446 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3447 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3448 err = -EINVAL;
3449 break;
3450 }
3451 /* Set access_flags */
3452 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3453 if (flags & IB_ACCESS_LOCAL_WRITE)
3454 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3455
3456 if (flags & IB_ACCESS_REMOTE_WRITE)
3457 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3458
3459 if (flags & IB_ACCESS_REMOTE_READ)
3460 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3461
3462 if (flags & IB_ACCESS_MW_BIND)
3463 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3464
3465 /* Fill in PBL info: */
3466 if (ib_wr->wr.fast_reg.page_list_len >
3467 pnesfrpl->ibfrpl.max_page_list_len) {
3468 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3469 " ib_wr=%p, value=%u, max=%u\n",
3470 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3471 pnesfrpl->ibfrpl.max_page_list_len);
3472 err = -EINVAL;
3473 break;
3474 }
3475
3476 set_wqe_64bit_value(wqe->wqe_words,
3477 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3478 pnesfrpl->nes_wqe_pbl.paddr);
3479
3480 set_wqe_32bit_value(wqe->wqe_words,
3481 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3482 ib_wr->wr.fast_reg.page_list_len * 8);
3483
3484 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3485 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3486
3487 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %p, "
3488 "length: %d, rkey: %0x, pgl_paddr: %p, "
3489 "page_list_len: %u, wqe_misc: %x\n",
3490 (void *)ib_wr->wr.fast_reg.iova_start,
3491 ib_wr->wr.fast_reg.length,
3492 ib_wr->wr.fast_reg.rkey,
3493 (void *)pnesfrpl->nes_wqe_pbl.paddr,
3494 ib_wr->wr.fast_reg.page_list_len,
3495 wqe_misc);
3496 break;
3497 }
3498 default:
3499 /* error */
3500 err = -EINVAL;
3501 break;
3502 }
3503
3504 if (err)
3505 break;
3506
3507 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3508 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3509
3510 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3511
3512 ib_wr = ib_wr->next;
3513 head++;
3514 wqe_count++;
3515 if (head >= qsize)
3516 head = 0;
3517
3518 }
3519
3520 nesqp->hwqp.sq_head = head;
3521 barrier();
3522 while (wqe_count) {
3523 counter = min(wqe_count, ((u32)255));
3524 wqe_count -= counter;
3525 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3526 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3527 }
3528
3529 spin_unlock_irqrestore(&nesqp->lock, flags);
3530
3531 out:
3532 if (err)
3533 *bad_wr = ib_wr;
3534 return err;
3535 }
3536
3537
3538 /**
3539 * nes_post_recv
3540 */
3541 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3542 struct ib_recv_wr **bad_wr)
3543 {
3544 u64 u64temp;
3545 unsigned long flags = 0;
3546 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3547 struct nes_device *nesdev = nesvnic->nesdev;
3548 struct nes_qp *nesqp = to_nesqp(ibqp);
3549 struct nes_hw_qp_wqe *wqe;
3550 int err = 0;
3551 int sge_index;
3552 u32 qsize = nesqp->hwqp.rq_size;
3553 u32 head;
3554 u32 wqe_count = 0;
3555 u32 counter;
3556 u32 total_payload_length;
3557
3558 if (nesqp->ibqp_state > IB_QPS_RTS) {
3559 err = -EINVAL;
3560 goto out;
3561 }
3562
3563 spin_lock_irqsave(&nesqp->lock, flags);
3564
3565 head = nesqp->hwqp.rq_head;
3566
3567 while (ib_wr) {
3568 /* Check for QP error */
3569 if (nesqp->term_flags) {
3570 err = -EINVAL;
3571 break;
3572 }
3573
3574 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3575 err = -EINVAL;
3576 break;
3577 }
3578 /* Check for RQ overflow */
3579 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3580 err = -ENOMEM;
3581 break;
3582 }
3583
3584 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3585 wqe = &nesqp->hwqp.rq_vbase[head];
3586
3587 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3588 nesqp->hwqp.qp_id, wqe, head); */
3589 nes_fill_init_qp_wqe(wqe, nesqp, head);
3590 u64temp = (u64)(ib_wr->wr_id);
3591 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3592 u64temp);
3593 total_payload_length = 0;
3594 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3595 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3596 ib_wr->sg_list[sge_index].addr);
3597 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3598 ib_wr->sg_list[sge_index].length);
3599 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3600 ib_wr->sg_list[sge_index].lkey);
3601
3602 total_payload_length += ib_wr->sg_list[sge_index].length;
3603 }
3604 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3605 total_payload_length);
3606
3607 ib_wr = ib_wr->next;
3608 head++;
3609 wqe_count++;
3610 if (head >= qsize)
3611 head = 0;
3612 }
3613
3614 nesqp->hwqp.rq_head = head;
3615 barrier();
3616 while (wqe_count) {
3617 counter = min(wqe_count, ((u32)255));
3618 wqe_count -= counter;
3619 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3620 }
3621
3622 spin_unlock_irqrestore(&nesqp->lock, flags);
3623
3624 out:
3625 if (err)
3626 *bad_wr = ib_wr;
3627 return err;
3628 }
3629
3630
3631 /**
3632 * nes_poll_cq
3633 */
3634 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3635 {
3636 u64 u64temp;
3637 u64 wrid;
3638 unsigned long flags = 0;
3639 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3640 struct nes_device *nesdev = nesvnic->nesdev;
3641 struct nes_cq *nescq = to_nescq(ibcq);
3642 struct nes_qp *nesqp;
3643 struct nes_hw_cqe cqe;
3644 u32 head;
3645 u32 wq_tail = 0;
3646 u32 cq_size;
3647 u32 cqe_count = 0;
3648 u32 wqe_index;
3649 u32 u32temp;
3650 u32 move_cq_head = 1;
3651 u32 err_code;
3652
3653 nes_debug(NES_DBG_CQ, "\n");
3654
3655 spin_lock_irqsave(&nescq->lock, flags);
3656
3657 head = nescq->hw_cq.cq_head;
3658 cq_size = nescq->hw_cq.cq_size;
3659
3660 while (cqe_count < num_entries) {
3661 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3662 NES_CQE_VALID) == 0)
3663 break;
3664
3665 /*
3666 * Make sure we read CQ entry contents *after*
3667 * we've checked the valid bit.
3668 */
3669 rmb();
3670
3671 cqe = nescq->hw_cq.cq_vbase[head];
3672 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3673 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3674 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3675 /* parse CQE, get completion context from WQE (either rq or sq) */
3676 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3677 ((u64)u32temp);
3678
3679 if (u64temp) {
3680 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3681 memset(entry, 0, sizeof *entry);
3682 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3683 entry->status = IB_WC_SUCCESS;
3684 } else {
3685 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3686 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3687 entry->status = err_code & 0x0000ffff;
3688
3689 /* The rest of the cqe's will be marked as flushed */
3690 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3691 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3692 NES_IWARP_CQE_MINOR_FLUSH);
3693 } else
3694 entry->status = IB_WC_WR_FLUSH_ERR;
3695 }
3696
3697 entry->qp = &nesqp->ibqp;
3698 entry->src_qp = nesqp->hwqp.qp_id;
3699
3700 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3701 if (nesqp->skip_lsmm) {
3702 nesqp->skip_lsmm = 0;
3703 nesqp->hwqp.sq_tail++;
3704 }
3705
3706 /* Working on a SQ Completion*/
3707 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3708 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3709 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3710 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3711 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3712 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3713
3714 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3715 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3716 case NES_IWARP_SQ_OP_RDMAW:
3717 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3718 entry->opcode = IB_WC_RDMA_WRITE;
3719 break;
3720 case NES_IWARP_SQ_OP_RDMAR:
3721 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3722 entry->opcode = IB_WC_RDMA_READ;
3723 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3724 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3725 break;
3726 case NES_IWARP_SQ_OP_SENDINV:
3727 case NES_IWARP_SQ_OP_SENDSEINV:
3728 case NES_IWARP_SQ_OP_SEND:
3729 case NES_IWARP_SQ_OP_SENDSE:
3730 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3731 entry->opcode = IB_WC_SEND;
3732 break;
3733 case NES_IWARP_SQ_OP_LOCINV:
3734 entry->opcode = IB_WR_LOCAL_INV;
3735 break;
3736 case NES_IWARP_SQ_OP_FAST_REG:
3737 entry->opcode = IB_WC_FAST_REG_MR;
3738 break;
3739 }
3740
3741 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3742 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3743 move_cq_head = 0;
3744 wq_tail = nesqp->hwqp.sq_tail;
3745 }
3746 } else {
3747 /* Working on a RQ Completion*/
3748 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3749 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3750 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3751 entry->opcode = IB_WC_RECV;
3752
3753 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3754 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3755 move_cq_head = 0;
3756 wq_tail = nesqp->hwqp.rq_tail;
3757 }
3758 }
3759
3760 entry->wr_id = wrid;
3761 entry++;
3762 cqe_count++;
3763 }
3764
3765 if (move_cq_head) {
3766 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3767 if (++head >= cq_size)
3768 head = 0;
3769 nescq->polled_completions++;
3770
3771 if ((nescq->polled_completions > (cq_size / 2)) ||
3772 (nescq->polled_completions == 255)) {
3773 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3774 " are pending %u of %u.\n",
3775 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3776 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3777 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3778 nescq->polled_completions = 0;
3779 }
3780 } else {
3781 /* Update the wqe index and set status to flush */
3782 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3783 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3784 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3785 cpu_to_le32(wqe_index);
3786 move_cq_head = 1; /* ready for next pass */
3787 }
3788 }
3789
3790 if (nescq->polled_completions) {
3791 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3792 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3793 nescq->polled_completions = 0;
3794 }
3795
3796 nescq->hw_cq.cq_head = head;
3797 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3798 cqe_count, nescq->hw_cq.cq_number);
3799
3800 spin_unlock_irqrestore(&nescq->lock, flags);
3801
3802 return cqe_count;
3803 }
3804
3805
3806 /**
3807 * nes_req_notify_cq
3808 */
3809 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3810 {
3811 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3812 struct nes_device *nesdev = nesvnic->nesdev;
3813 struct nes_cq *nescq = to_nescq(ibcq);
3814 u32 cq_arm;
3815
3816 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3817 nescq->hw_cq.cq_number);
3818
3819 cq_arm = nescq->hw_cq.cq_number;
3820 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3821 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3822 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3823 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3824 else
3825 return -EINVAL;
3826
3827 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3828 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3829
3830 return 0;
3831 }
3832
3833
3834 /**
3835 * nes_init_ofa_device
3836 */
3837 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3838 {
3839 struct nes_ib_device *nesibdev;
3840 struct nes_vnic *nesvnic = netdev_priv(netdev);
3841 struct nes_device *nesdev = nesvnic->nesdev;
3842
3843 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3844 if (nesibdev == NULL) {
3845 return NULL;
3846 }
3847 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3848 nesibdev->ibdev.owner = THIS_MODULE;
3849
3850 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3851 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3852 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3853
3854 nesibdev->ibdev.uverbs_cmd_mask =
3855 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3856 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3857 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3858 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3859 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3860 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3861 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3862 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3863 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3864 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3865 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3866 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3867 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3868 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3869 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3870 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3871 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3872 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3873 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3874 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3875 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3876 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3877
3878 nesibdev->ibdev.phys_port_cnt = 1;
3879 nesibdev->ibdev.num_comp_vectors = 1;
3880 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3881 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3882 nesibdev->ibdev.query_device = nes_query_device;
3883 nesibdev->ibdev.query_port = nes_query_port;
3884 nesibdev->ibdev.modify_port = nes_modify_port;
3885 nesibdev->ibdev.query_pkey = nes_query_pkey;
3886 nesibdev->ibdev.query_gid = nes_query_gid;
3887 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3888 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3889 nesibdev->ibdev.mmap = nes_mmap;
3890 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3891 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3892 nesibdev->ibdev.create_ah = nes_create_ah;
3893 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3894 nesibdev->ibdev.create_qp = nes_create_qp;
3895 nesibdev->ibdev.modify_qp = nes_modify_qp;
3896 nesibdev->ibdev.query_qp = nes_query_qp;
3897 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3898 nesibdev->ibdev.create_cq = nes_create_cq;
3899 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3900 nesibdev->ibdev.poll_cq = nes_poll_cq;
3901 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3902 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3903 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3904 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3905 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3906 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3907 nesibdev->ibdev.bind_mw = nes_bind_mw;
3908
3909 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3910 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3911 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3912
3913 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3914 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3915 nesibdev->ibdev.process_mad = nes_process_mad;
3916
3917 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3918 nesibdev->ibdev.post_send = nes_post_send;
3919 nesibdev->ibdev.post_recv = nes_post_recv;
3920
3921 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3922 if (nesibdev->ibdev.iwcm == NULL) {
3923 ib_dealloc_device(&nesibdev->ibdev);
3924 return NULL;
3925 }
3926 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3927 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3928 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3929 nesibdev->ibdev.iwcm->connect = nes_connect;
3930 nesibdev->ibdev.iwcm->accept = nes_accept;
3931 nesibdev->ibdev.iwcm->reject = nes_reject;
3932 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3933 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3934
3935 return nesibdev;
3936 }
3937
3938
3939 /**
3940 * nes_destroy_ofa_device
3941 */
3942 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3943 {
3944 if (nesibdev == NULL)
3945 return;
3946
3947 nes_unregister_ofa_device(nesibdev);
3948
3949 kfree(nesibdev->ibdev.iwcm);
3950 ib_dealloc_device(&nesibdev->ibdev);
3951 }
3952
3953
3954 /**
3955 * nes_register_ofa_device
3956 */
3957 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3958 {
3959 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3960 struct nes_device *nesdev = nesvnic->nesdev;
3961 struct nes_adapter *nesadapter = nesdev->nesadapter;
3962 int i, ret;
3963
3964 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3965 if (ret) {
3966 return ret;
3967 }
3968
3969 /* Get the resources allocated to this device */
3970 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3971 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3972 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3973 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3974
3975 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3976 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3977 if (ret) {
3978 while (i > 0) {
3979 i--;
3980 device_remove_file(&nesibdev->ibdev.dev,
3981 nes_dev_attributes[i]);
3982 }
3983 ib_unregister_device(&nesibdev->ibdev);
3984 return ret;
3985 }
3986 }
3987
3988 nesvnic->of_device_registered = 1;
3989
3990 return 0;
3991 }
3992
3993
3994 /**
3995 * nes_unregister_ofa_device
3996 */
3997 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3998 {
3999 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4000 int i;
4001
4002 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4003 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4004 }
4005
4006 if (nesvnic->of_device_registered) {
4007 ib_unregister_device(&nesibdev->ibdev);
4008 }
4009
4010 nesvnic->of_device_registered = 0;
4011 }
kernel source for telekom puls (alcatel/mediatek)